CN115396901A

CN115396901A - Multi-frequency communication architecture

Info

Publication number: CN115396901A
Application number: CN202110567809.2A
Authority: CN
Inventors: 吴恒恒; 张关喜; 俞鑫; 李向华; 唐文鼎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-11-25

Abstract

The application provides a multi-frequency communication architecture, which comprises a baseband processing chip, a radio frequency integrated chip (ROC), a downlink module and a frequency-selective transmitting unit; the frequency-selecting transmitting unit is provided with a plurality of control transmitting modules; the baseband processing chip generates a frequency selection control signal, sends a digital signal to the ROC and sends the frequency selection control signal to the ROC, the downlink module and the frequency selection transmitting unit; the ROC sets transmission parameters according to the frequency-selecting control signals, converts the digital signals into analog signals, modulates the analog signals on a target frequency band according to the transmission parameters, and sends the modulated analog signals to the downlink module; the downlink module sends the modulated analog signal to the frequency-selecting transmitting unit; the frequency-selecting transmitting unit disconnects other control transmitting modules, processes the modulated model signal through the target control module to obtain a radio-frequency signal of a target frequency band, and transmits the radio-frequency signal of the target frequency band. Through the framework, the network equipment can select the frequency band of the radio frequency signal, and the frequency spectrum utilization rate is improved.

Description

Multi-frequency communication architecture

Technical Field

The present application relates to the field of communications technologies, and in particular, to a multi-frequency communication architecture.

Background

With the development of communication systems, the amount of data transmitted and communicated between devices is enormous in some application scenarios, such as a scenario in which production data of a coal mine shaft is uploaded in real time, a telemedicine scenario, a Virtual Reality (VR) scenario, or an Augmented Reality (AR) scenario. In order to improve the spectrum utilization rate of the communication system, the coverage area of the base station, and the transmission speed, the base station may be designed to be in a Frequency Division Duplex (FDD) mode, that is, the transmission of the uplink (physical channel from the mobile station to the base station for data transmission signals) and the downlink (physical channel from the base station to the mobile station for data transmission signals) are respectively performed on different frequencies. In the FDD architecture, for downlink transmission, a network device only supports a certain transmission frequency band or two adjacent transmission frequency bands. In some scenarios with smaller out-of-band rejection (e.g., scenarios in which the network device is only used to transmit radio frequency signals), when the base station in the FDD mode can transmit two adjacent transmission frequency bands, if the downlink load of a certain frequency band is larger and the downlink load of another frequency band is smaller or no-load, the spectrum utilization rate is reduced, and the unnecessary power consumption of the system is increased.

Therefore, when spectrum resources are increasingly tense, how to flexibly allocate spectrum resources to improve spectrum utilization rate is an urgent problem to be solved.

Disclosure of Invention

The application provides a multi-frequency communication framework, through which spectrum resources can be pooled, network equipment can flexibly allocate spectrum resources, and the spectrum utilization rate is improved.

In a first aspect, the present application provides a multi-frequency communication architecture, which is applied to a network device, and includes a baseband processing chip, a radio frequency integrated chip ROC, a downlink module TXSIP, and a frequency-selective transmitting unit; the baseband processing chip is connected with the ROC, the ROC is connected with the TXSIP, the TXSIP is connected with the frequency-selecting transmitting unit, the frequency-selecting transmitting unit comprises a plurality of control transmitting modules, and each control transmitting unit corresponds to one frequency band; wherein:

the baseband processing chip is used for generating a frequency selection control signal according to the channel request information from the terminal equipment; the frequency-selecting switch is also used for sending a digital signal to the ROC and sending a frequency-selecting control signal to the ROC, the TXSSIP and the frequency-selecting switch; the frequency selection control signal carries an identifier of the selected target frequency band. The ROC is used for setting transmission parameters corresponding to a target frequency band according to the frequency selection control signal, and the transmission parameters comprise local oscillation frequency and sampling frequency; the device is also used for converting the digital signal into an analog signal and modulating the analog signal on a target frequency band according to the transmission parameter; and also for transmitting modulated analog signals to TXSIP. And the TXSIP is used for sending the modulated analog signals to the frequency-selecting transmitting unit. The frequency-selecting transmitting unit is used for determining a target control transmitting module corresponding to a target frequency band from the plurality of control transmitting modules; connecting the target control transmitting module and disconnecting the control transmitting modules except the target control transmitting module; and processing the modulated analog signal through the target control transmitting module to obtain a radio frequency signal, and transmitting the radio frequency signal.

Based on the multi-frequency communication architecture of the first aspect, the network device may flexibly select one or more frequency bands for transmitting the radio frequency signal through the frequency-selective transmitting unit, thereby implementing flexibly selectable multi-frequency signal transmission.

In one possible implementation, the frequency-selective transmitting unit comprises a frequency-selective switch, a plurality of processing units and an antenna, each processing unit comprises a power amplifier PA and a filter; the control transmitting module consists of a processing unit, a frequency selecting switch and an antenna; the TXSET is connected with the frequency selecting switch; wherein: the frequency selection switch is used for connecting the processing units corresponding to the target frequency band based on the frequency selection control signal and disconnecting the processing units except the target processing unit in the plurality of processing units; the system is also used for receiving the modulated analog signal from the TXSSIP and sending the modulated analog signal to the target processing unit; the target processing unit is used for processing the modulated model signal to obtain a radio frequency signal of a target frequency band; and the antenna is used for transmitting the radio frequency signal of the target frequency band.

Based on the multi-frequency communication architecture which can be realized, the network equipment can control the frequency band of the radio-frequency signal sent by the antenna through the frequency selection switch, so that the downlink frequency spectrum resources are pooled, and the multi-frequency signal transmission which can be flexibly selected is realized. And moreover, the structure of the duplexer is replaced by the filter, the design complexity of the multi-band duplexer is simplified, and the cost and the weight are reduced.

In one possible implementation, the frequency-selective transmitting unit includes an ultra-wideband power amplifier PA, a plurality of filters, and an antenna; TXSET is connected with an ultra wide band PA, the ultra wide band PA is connected with a plurality of filters, and an antenna is connected with the plurality of filters; the ultra-wideband PA comprises a plurality of amplification control units, each amplification control unit corresponds to one frequency band, and each filter corresponds to one frequency band; the control transmitting module consists of an amplification control unit, a filter and an antenna in the ultra-wideband PA; wherein:

the ultra-wideband PA is used for connecting a target amplification control unit corresponding to a target frequency band in the ultra-wideband PA through a grid voltage control circuit and disconnecting the amplification control units except the target amplification control unit in the ultra-wideband PA; the receiver is also used for receiving a modulated analog signal from TXSSIP; and the target control unit is also used for amplifying the modulated analog signal, communicating with a filter corresponding to the target frequency band, and processing the modulated model signal to obtain the radio-frequency signal of the target frequency band. And the antenna is used for transmitting the radio frequency signal of the target frequency band.

Based on the multi-frequency communication architecture which can be realized, the network equipment can control the frequency band of the radio-frequency signal sent by the antenna through the ultra-wideband PA, so that the downlink frequency spectrum resources are pooled, and the multi-frequency signal transmission which can be flexibly selected is realized. And, the design complexity of the filter is reduced, and the cost and the weight are reduced.

In one possible implementation, the frequency-selective transmitting unit includes an ultra-wideband power amplifier PA and a filtering antenna, the ultra-wideband PA includes a plurality of amplification control units, and each amplification control unit corresponds to one frequency band; the control transmitting module consists of an amplification control unit and a filtering antenna in the ultra-wideband PA; the TXSET is connected with the ultra-wideband PA, and the filtering antenna is connected with the ultra-wideband PA through a plurality of feed ports; wherein:

the ultra-wideband PA is used for starting a target amplification control unit corresponding to a target frequency band in the ultra-wideband PA through a gate voltage control circuit, and disconnecting the amplification control units except the target amplification control unit in the ultra-wideband PA and is also used for receiving a modulated analog signal from TXSSIP; and processing the modulated model signal through a target control unit to obtain a radio frequency signal of a target frequency band. And the filtering antenna is used for transmitting the radio frequency signal of the target frequency band.

Based on the multi-frequency communication architecture which can be realized, the network equipment can control the frequency band of the radio-frequency signal sent by the antenna through the ultra-wideband PA, so that the downlink frequency spectrum resources are pooled, and the multi-frequency signal transmission which can be flexibly selected is realized. In addition, the design complexity of the filter is reduced, the cost and the weight are reduced, and the integration level is improved.

In one possible implementation, the channel request information includes a frequency band in which the terminal device is located; and under the condition that the frequency band of the terminal equipment is different from the working frequency band of the network equipment, generating a frequency selection control signal according to the frequency band of the terminal equipment, wherein the target frequency band is the frequency band of the terminal equipment.

In one possible implementation, the number of the target frequency bands is at least two, the baseband processing chip comprises a plurality of baseband processing units, each baseband processing unit corresponds to one target frequency band, and the baseband processing chip is further used for compensating amplitude difference among the target frequency bands in a digital domain; and the ROC is also used for compensating amplitude difference between the target frequency bands in the analog common channel.

In one possible implementation, the channel request information includes a frequency band in which the terminal device is located and a load state of each frequency band in a plurality of frequency bands supported by an operator corresponding to the terminal device; the baseband processing chip is used for determining at least two target frequency bands from the plurality of frequency bands based on the load state of each frequency band, and the load state of each target frequency band is greater than a first value; and generating a frequency selection control signal based on the target frequency band.

In a possible implementation, the baseband processing chip is further configured to send a frequency band switching instruction to the first terminal device if the target frequency band does not include the frequency band in which the first terminal device is located, where the frequency band switching instruction is used to instruct the first terminal device to switch to the target frequency band.

In a second aspect, the present application provides a signal transmission method, which is applied to a network device, and includes: the method comprises the steps that network equipment acquires frequency band information of a first frequency band where terminal equipment is located; under the condition that the first frequency band is equal to a second frequency band corresponding to the network equipment, the network equipment sends a radio frequency signal based on the second frequency band; and under the condition that the first frequency band is not equal to the second frequency band corresponding to the network equipment, the network equipment sends the radio frequency signal based on the first frequency band.

Based on the signal transmission method in the second aspect, under the condition that the network device is lightly loaded or unloaded, the network device can flexibly determine the frequency band for transmitting the signal according to the current working frequency band of the terminal device without changing the current network architecture, so that the flexibility of the network device for transmitting the signal is improved.

In a third aspect, the present application provides a signal transmission method, which is applied to a network device, and includes: the network equipment acquires frequency band information of terminal equipment in a service cell; the network equipment determines at least two target frequency bands based on the frequency band information of the terminal equipment in the service cell; the network equipment transmits radio frequency signals based on the at least two target frequency bands.

Based on the signal transmission method of the third aspect, the network device can flexibly determine the frequency band of the transmission signal according to the frequency band information of the terminal device in the serving cell without changing the current network architecture, so that the flexibility of the network device in transmitting the signal is improved, the network architecture does not need to be changed, and the cost is reduced.

In a possible implementation, if the target frequency band does not include the frequency band in which the first terminal device is located, the network device sends a frequency band switching instruction to the first terminal device, where the frequency band switching instruction is used to instruct the first terminal device to switch to the target frequency band.

Drawings

Fig. 1 is a schematic diagram of a communication architecture provided herein;

fig. 2 is a schematic diagram of a multi-frequency communication architecture provided herein;

fig. 3 is a schematic diagram of another multi-frequency communication architecture provided herein;

fig. 4 is a schematic diagram of yet another multi-frequency communication architecture provided herein;

fig. 5 is a schematic diagram of another multi-frequency communication architecture provided herein;

fig. 6 is a schematic flow chart of a signal transmission method provided in the present application;

fig. 7 is a schematic flow chart of another signal transmission method provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

The terms "first" and "second," and the like in the description, claims, and drawings of the present application are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of operations or elements is not limited to only those operations or elements but may alternatively include other operations or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the present application, "at least one" means one or more, "a plurality" means two or more, "at least two" means two or three and three or more, "and/or" for describing the correspondence of the corresponding objects, indicating that three relationships may exist, for example, "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the preceding and following corresponding pair is in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

In order to facilitate understanding of the present application, the following description will first explain related technical features related to embodiments of the present application. It should be noted that these explanations are for the purpose of making the examples of the present application easier to understand, and should not be construed as limiting the scope of protection claimed in the present application.

1. Terminal device

The terminal equipment, which may also be referred to as User Equipment (UE), includes equipment that provides voice and/or data connectivity to a user, and may include, for example, a handheld device having wireless connection capability or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit, a subscriber station, a mobile station, a remote station, an Access Point (AP), a remote terminal, an access terminal, a user agent, or user equipment, etc. For example, mobile telephones (otherwise known as "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. Also included are constrained devices such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, radio Frequency Identification (RFID), sensors, global Positioning Systems (GPS), laser scanners, and so forth.

2. Network device

The network device is a node or a device for accessing the terminal device to the wireless network, for example, the network device includes but is not limited to: a new generation base station (gNB), an evolved node B (eNB), a next generation evolved node B (next-eNB), a wireless backhaul device, a home base station (HeNB) or (HNB)), a baseBand unit (BBU), a Transmission and Reception Point (TRP), a Transmission Point (TP), a mobile switching center (msc), etc. in the 5G communication system.

3. Baseband signal

The baseband signal is an original electrical signal that is transmitted by a source (information source, also called a transmitting terminal) and is not modulated (spectrum shifted and converted). It is understood that the baseband signal is a signal that is emitted to directly express the information to be transmitted, for example, the sound wave we speak about is the baseband signal.

4. Frequency, frequency band sum frequency point

The frequency refers to a transmission frequency of a wireless signal in mobile communication, for example, in a global system for mobile communications (GSM) 900 network, an uplink receiving frequency range is 890MHz to 915MHz, and a downlink transmitting frequency range is 935MHz to 960MHz.

The frequency band refers to a frequency range, and GSM includes multiple frequency bands, for example, an uplink frequency band corresponding to a GSM900 network is 890MHz to 915MHz, and a downlink frequency band is 935MHz to 960MHz.

The frequency points are numbers given to fixed frequencies, e.g. 125 fixed frequencies are determined in a GSM900 network at frequency intervals of 200 KHz: 890MHz, 890.2MHz, 890.4MHz, 890.6MHz, 890.8MHz, 891MHz … … 915MHz, and numbering these fixed frequencies: 1. 2, 3, 4 … …, and these numbers for fixed frequencies are referred to as bins. In a GSM network, a frequency point is used to specify a signal receiving frequency and a signal transmitting frequency of a transceiver group (it can be understood that the signal receiving frequency and the signal transmitting frequency have a corresponding relationship), for example, a frequency point of a certain carrier is specified to be 3 in a GSM900 network, that is, the uplink signal receiving frequency of the carrier is 890.4MHz, and the downlink signal transmitting frequency is 935.4MHz.

5. Multi-frequency antenna and broadband antenna

The multi-frequency antenna can transmit radio frequency signals of a plurality of frequency bands, and comprises a plurality of oscillators, wherein each oscillator corresponds to one frequency band (each oscillator can be understood to be used for transmitting a radio frequency signal of one frequency band); the broadband antenna can transmit radio frequency signals of a plurality of frequency bands, and the broadband antenna comprises an element which is used for transmitting the radio frequency signals of the plurality of frequency bands. The antenna referred to in this application may be replaced by a multi-frequency antenna or a broadband antenna, unless otherwise specified, as used herein.

6. Frequency Division Duplexing (FDD)

The physical path of the data transmission signal from the mobile station to the base station, i.e. the physical path for Receiving (RX) transmission signals from the mobile station to the base station, is called uplink; the physical channel of the data transmission signal from the base station to the mobile station, i.e. the physical channel used for Transmitting (TX) data, is called downlink. In a network device in an FDD architecture, uplink and downlink transmissions are made on different frequencies, respectively. For downlink transmission in the FDD architecture, the network device only supports transmitting radio frequency signals through a certain transmission frequency band or through two adjacent transmission frequency bands.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating a network device transmitting signals and receiving signals in an FDD architecture. The architecture includes a baseband processing chip 10, a Radio On Chip (ROC) 11, a downlink module (TX system in a chip, TXSIP) 12, a Power Amplifier (PA) 13, a Low Noise Amplifier (LNA) 14, a duplexer 15, and an antenna 16. The network device corresponds to a plurality of signal transmission frequency bands (e.g., fm0 to fmn in fig. 1) and a plurality of signal reception frequency bands (e.g., RX1 to RXn in fig. 1), PA 13 corresponds to the signal transmission frequency bands one by one, LNA14 corresponds to the signal reception frequency bands one by one, and duplexer 15 corresponds to PA 13 (or LNA 14) one by one.

The Baseband processing chip 10 includes, but is not limited to, a High standard Baseband processing Unit (BBH), a Low standard Baseband processing Unit (Low standards), and an Application Specific Integrated Circuit (ASIC). In fig. 1, feedback signals (FB) correspond to signal transmission frequency bands one to one, for example, PA amplifies a signal transmission frequency band fm0 and then sends FB1 to ROC, and PA amplifies a signal transmission frequency band fm1 and then sends FB2 to ROC.

Illustratively, in the case where the radio frequency signal transmitted by the network device to the terminal device is in the transmission frequency band fm1, the baseband processing chip 10 processes (including but not limited to encoding, multiplexing, filtering, and clipping) the baseband signal and transmits the digital signal to the ROC 11. The ROC11 converts the digital signal into an analog signal through a radio frequency digital to analog converter (RFDAC), modulates the analog signal on the transmission frequency band fm1, and further, the ROC11 transmits the modulated analog signal to the TXSIP 12. The TXSIP12 performs analog amplification on the PA 13 corresponding to the transmitting frequency band fm1, and obtains a radio frequency signal after filtering by a TX filter in a duplexer 15 connected to the PA 13 corresponding to the transmitting frequency band fm1, and further sends the radio frequency signal to the terminal device through an antenna 16.

When the network device receives a radio frequency signal from the terminal device in the receiving frequency band RX1, after the radio frequency signal sent by the terminal device is received by the antenna 16, the RX filter in the duplexer 15 (connected to the LNA14 corresponding to the receiving frequency band RX 1) performs frequency selective filtering according to the signal receiving frequency band of the network device. The filtered rf signal is transmitted to LNA14 corresponding to the receiving band RX1 for amplification, and the amplified rf signal flows to ROC 11. The ROC11 converts the radio frequency signal into a digital signal through a radio frequency analog to digital converter (RFADC). Further, ROC11 sends the digital signal to baseband processing chip 10 for processing (including but not limited to sampling, decoding, and modulation).

Based on this, if the network device under the FDD architecture corresponds to two or more transmission frequency bands, when a downlink load of a certain transmission frequency band is large and other transmission frequency bands are empty (no load) or lightly loaded (low load), the network device still sends data information to the terminal device in its serving cell based on the two or more transmission frequency bands, but this not only increases the system power consumption, but also reduces the frequency utilization rate.

The present application provides a multi-frequency communication architecture, which removes an RX filter included in a duplexer 15 in fig. 1 (or may be understood as changing the duplexer 15 into a TX filter), and adds a frequency selection switch in the multi-frequency communication architecture to control a frequency band of a radio frequency signal of an antenna, that is, it may be understood that the multi-frequency communication architecture is a transmit module only used for transmission (TX-only), and pools downlink spectrum resources to support flexible and selectable multi-frequency transmission. In a possible application scenario, in order to satisfy the uplink service with a large data volume, it may also be implemented that a plurality of uplink frequency bands are integrated on the same network device through hardware, and at this time, the network device may be regarded as a large uplink receiving module only used for receiving. Under the scene, the transmitting module only used for transmitting (TX-only) can be matched with the large uplink receiving module to form a multi-frequency communication architecture with separated receiving and transmitting, so that the networking of mobile communication is more flexible.

The following describes in further detail a multi-frequency communication architecture provided in the embodiments of the present application:

referring to fig. 2, fig. 2 is a multi-frequency communication architecture provided in the present application, which includes a baseband processing chip 10, an roc11, a TXSIP12, and a frequency-selective transmitting unit 13. The baseband processing chip 10 is connected with the ROC11, the ROC11 is connected with the TXSIP12, and the TXSIP12 is connected with the frequency-selective transmitting unit 13. The frequency-selective transmitting unit 13 includes a plurality of control transmitting modules, and each control transmitting unit corresponds to a frequency band, such as the frequency band fm0 corresponding to the control transmitting module 0, the frequency band fm1 corresponding to the control transmitting module 1, and the frequency band fmn corresponding to the control transmitting module n in fig. 2.

The baseband processing chip 10 is configured to generate a frequency selection control signal (also called a frequency selection switching control signal, freq-CC)) according to channel request information from the terminal device; and is also used for transmitting digital signals to the ROC11 and frequency-selective control signals to the ROC11, TXSIP12 and frequency-selective transmitting unit 13; the frequency-selective control signal carries an identification of the selected target frequency band. The ROC11 is used for setting a transmission parameter corresponding to a target frequency band according to the frequency selection control signal, wherein the transmission parameter comprises a local oscillation frequency and a sampling frequency; the device is also used for converting the digital signal into an analog signal and modulating the analog signal on a target frequency band according to the transmission parameter; and also for transmitting modulated analog signals to TXSIP 12. TXSIP, configured to send the modulated analog signal to the frequency-selective transmitting unit 13; a frequency-selecting transmitting unit 13, configured to determine a target control transmitting module corresponding to a target frequency band from multiple control transmitting modules; connecting the target control transmitting module and disconnecting the control transmitting modules except the target control transmitting module; and processing the modulated analog signal through the target control transmitting module to obtain a radio frequency signal, and transmitting the radio frequency signal.

The number of the target frequency bands may be one or more, which is described in detail in the following two cases.

Case one, the number of target frequency bands is one

Under the condition that the network device is idle, the channel request information includes a frequency band in which the terminal device is located (which may be understood as a current operating frequency band of the terminal device), and when the frequency band in which the terminal device is located is different from the operating frequency band of the network device, the baseband processing chip 10 generates a frequency selection control signal according to the frequency band in which the terminal device is located, that is, an identifier of a target frequency band carried in the frequency selection control signal is an identifier of the frequency band in which the terminal device is located.

In the case of a light load of the network device, the channel request information includes a frequency band corresponding to the terminal device, and further, the baseband processing chip 10 determines 1 target frequency band from a plurality of frequency bands corresponding to a plurality of terminal devices based on the plurality of frequency bands; and generating a frequency selection control signal based on the target frequency band. For example, a terminal device connected to a network device includes: the terminal device 1 corresponds to the frequency band fm0, and the terminal device 2 corresponds to the frequency band fm1. In this case, the network device may determine 1 frequency band from the frequency band fm0 and the frequency band fm1 as the target frequency band. It should be understood that, in this case, the mode of determining the target frequency band may be randomly selected, or may be determined according to a preset algorithm, which is not specifically limited in this embodiment.

Illustratively, if the default operating frequency band of the communication system applying the multi-frequency communication architecture is fm0, the frequency band in which the terminal device is located in the channel request information of the terminal device is fmn. In this case, the baseband processing chip 10 determines the frequency band fmn in which the terminal device is located as the target frequency band, and generates the frequency selection control signal. Further, the baseband processing chip 10 sends the frequency-selecting control signal to the ROC11, the TXSIP12 and the frequency-selecting transmitting unit 13, so that the operating parameters of the ROC11, the TXSIP12 and the frequency-selecting transmitting unit 13 are all adjusted and set according to the target frequency band fmn. The ROC11 sets a transmission parameter (such as a local oscillation frequency and a sampling frequency) corresponding to the target frequency band fmn according to the frequency selection control signal, and the TXSIP12 and the frequency selection transmitting unit 13 determine a control transmitting module n corresponding to the target frequency band fmn as a target control transmitting module according to the frequency selection control signal. And connecting the control transmitting module n and disconnecting other control transmitting modules except the control transmitting module n. The baseband processing chip 10 performs filtering, clipping and other processing on the baseband signal to obtain a digital signal, and transmits the digital signal to the ROC 11; the ROC11 converts the digital signal into an analog signal, modulates the analog signal on a target frequency band fmn according to a transmission parameter corresponding to the target frequency band fmn, and transmits the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to a control transmitting module n in the frequency-selective transmitting unit, so that the control transmitting module n performs amplification, attenuation, filtering and other processing on the modulated analog signal to obtain a radio frequency signal of a target frequency band fmn, and the control transmitting module n transmits the radio frequency signal of the target frequency band fmn.

Case two, the number of target frequency bands is multiple (at least two)

The network device is not under the condition of no load or light load, in this case, the channel request information includes a frequency band corresponding to the terminal device and a load state of each frequency band in a plurality of frequency bands supported by an operator corresponding to the terminal device, further, the baseband processing chip 10 determines at least two target frequency bands from the plurality of frequency bands based on the load state of each frequency band, and the load state of the target frequency band is greater than a first value; and generating a frequency selection control signal based on the target frequency band. The first value is preset according to an application scene, and can be correspondingly adjusted according to a specific application scene without excessive limitation.

In other words, all terminal devices in a serving cell of the network device report their own operating frequency bands and their affiliated operators (since the frequency bands supported by each operator are different, it may be understood that information of multiple frequency bands supported by the terminal device corresponding to the operator is acquired), and further, the network device determines a load state of each of the multiple frequency bands supported by the operator, and determines, according to the load state of each of the multiple frequency bands supported by the operator, a frequency band whose load state is greater than a first value (which may also be understood as being greater than or equal to the first value) as a target frequency band.

Exemplarily, there are a plurality of terminal devices in a cell served by a network device, where the reporting of the channel request information by the terminal device 1 is as follows: the frequency band is fm0, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 2 is: the frequency band is fm1, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 3 is: the frequency band is fm2, and the frequency bands supported by the operator are fm0, fm1 and fm2. If the maximum tolerable 6 terminal devices in the fm0 frequency band and the frequency band where 4 terminal devices currently exist in the cell served by the network device are fm0, the load state of fm0 can be 66.7% from 4/6; the maximum tolerable 6 terminal devices in the fm1 frequency band, and the frequency band where 3 terminal devices currently exist in the cell served by the network device is fm1, the load state of fm1 can be 50% from 3/6; the maximum tolerable 6 terminal devices in the fm2 frequency band, and the frequency band where 2 terminal devices currently exist in the cell served by the network device is fm2, the load state of fm2 can be 33.3% from 2/6. And under the condition that the first value is 50%, determining a frequency band with the load state of more than or equal to 50% as a target frequency band, namely determining a frequency band fm0 and a frequency band fm1 of an operator as the target frequency band, and generating a frequency selection control signal according to the fm0 and the fm1.

In this case, in a possible implementation, if the target frequency band does not include the frequency band in which the first terminal device is located, the baseband processing unit sends a frequency band switching instruction to the first terminal device, where the frequency band switching instruction is used to instruct the first terminal device to switch to the target frequency band.

For example, there are multiple terminal devices in a cell served by a network device, where the channel request information reported by the terminal device 1 is: the frequency band is fm0, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 2 is: the frequency band is fm1, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 3 is: the frequency band is fm2, and the frequency bands supported by the operator are fm0, fm1 and fm2. If the target frequency bands are fm0 and fm1, the terminal device 3 not in the target frequency bands is the first terminal device. The baseband processing chip 10 sends a frequency band switching instruction to the terminal device 3, where the frequency band switching instruction may carry an identifier of a target frequency band, so that the terminal device 3 switches to the target frequency band (frequency band fm0 or frequency band fm 1). Which target frequency band of the plurality of target frequency bands to which the specific terminal device 3 is switched may be determined according to an algorithm of the terminal device or a load condition of each target frequency band, and is not specifically discussed herein since it is not a main content of the present scheme.

In a possible implementation, the number of the target frequency bands is at least two, the baseband processing chip includes a plurality of baseband processing units, and each baseband processing unit corresponds to one target frequency band. The baseband processing chip 10 is further configured to compensate amplitude differences of the respective target frequency bands in a digital domain, and the ROC11 is further configured to compensate amplitude differences of the respective target frequency bands in an analog common channel. By implementing this possible implementation, the transmission power of each target frequency band is made the same.

In other words, when the number of the target frequency bands is at least two, the baseband processing chip 10 and the ROC11 are further configured to adjust the amplitude value of the baseband signal corresponding to each target frequency band, so that the amplitude values of the target frequency bands are the same. The baseband processing chip 10 adjusts the amplitude value of the baseband signal in the digital domain, and the ROC11 adjusts the amplitude value of the baseband signal in the analog common channel.

For example, the number of target frequency bands is 2: a target frequency band fm0 and a target frequency band fm1. The baseband processing chip 10 includes a baseband processing unit 0 and a baseband processing unit 1, where the baseband processing unit 0 corresponds to the target frequency band fm0, and the baseband processing unit 1 corresponds to the target frequency band fm1. When the amplitude of the baseband signal 0 corresponding to the target frequency band 0 is 10dB and the amplitude of the baseband signal 1 corresponding to the target frequency band 1 is 8dB, the amplitude of the baseband signal 0 may be adjusted to 9dB and the amplitude of the baseband signal 1 may be adjusted to 9dB.

Next, based on the specific composition structure of the frequency-selective transmitting unit, the following 3 structures are discussed in detail.

The first structure is that the frequency-selecting transmitting unit comprises a frequency-selecting switch, a plurality of processing units and an antenna, and each processing unit comprises a PA and a filter. That is, it can be understood that the control transmitting module in the radio frequency transmitting unit 13 in fig. 2 is composed of a processing unit, a frequency selecting switch and an antenna. In the communication architecture, the TXSIP is connected with a frequency selecting switch, and the frequency selecting switch can control to connect or disconnect a plurality of processing units, wherein each processing unit is connected with an antenna.

Referring to fig. 3 in particular, fig. 3 is another multi-frequency communication architecture provided in the present application, where the architecture includes a baseband processing chip 10, a ROC11, a TXSIP12, a frequency-selecting switch 13, a plurality of processing units 14, and an antenna 15, where each processing unit 13 includes a power amplifier and a filter, the baseband processing chip 10 is connected to the ROC11, the ROC11 is connected to the TXSIP12, the TXSIP12 is connected to one or more of the processing units 14 through the frequency-selecting switch 13, and the antenna 15 is connected to the processing units through a plurality of feeding ports. One processing unit 14 corresponds to one feeding port of the antenna 15.

In the multi-frequency communication architecture shown in fig. 3, the baseband processing chip 10 is configured to generate a frequency selection control signal (also called frequency selection switching control signal, freq-CC) according to channel request information from the terminal device; and is also used for transmitting digital signals to the ROC11 and transmitting frequency-selecting control signals to the ROC11, the TXSIP12 and the frequency-selecting switch 13; the frequency-selective control signal carries an identification of the selected target frequency band. The ROC11 is used for setting a transmission parameter corresponding to a target frequency band according to the frequency selection control signal, wherein the transmission parameter comprises a local oscillation frequency and a sampling frequency; the device is also used for converting the digital signal into an analog signal and modulating the analog signal on a target frequency band according to the transmission parameter; and also for transmitting modulated analog signals to TXSIP 12. The TXSIP12 is used for connecting a target processing unit corresponding to a target frequency band through the frequency selecting switch 13 and disconnecting the processing units except the target processing unit in the plurality of processing units 14; and is also used to send the modulated analog signal to the target processing unit. And the target processing unit is used for processing the modulated model signal to obtain a radio frequency signal of a target frequency band. And the antenna 15 is used for transmitting radio frequency signals of a target frequency band.

If the antenna is a multi-frequency antenna adopting a coplanar design of fm0 to fmn multiple frequency planes (each frequency plane can be understood to correspond to one frequency band), each frequency band in the multi-frequency antenna corresponds to one feed port. Each feed port of the multi-frequency antenna is connected to a processing unit 14.

In the first case, if the number of the target frequency bands is one, the frequency band where the terminal device is located in the channel request information of the terminal device is fmn, if the default operating frequency band of the communication system applying the multi-frequency communication architecture is fm 0. In this case, the baseband processing chip 10 determines the frequency band fmn in which the terminal device is located as the target frequency band, and generates the frequency selection control signal. Further, the baseband processing chip 10 sends the frequency selection control signal to the ROC11, the TXSIP12 and the frequency selection switch 13, so that the operating parameters of the ROC11, the TXSIP12 and the frequency selection switch 13 are all adjusted and set according to the target frequency band fmn. The ROC11 sets a transmission parameter (such as a local oscillation frequency and a sampling frequency) corresponding to the target frequency band fmn according to the frequency selection control signal, and the TXSIP12 and the frequency selection switch 13 determine a target processing unit corresponding to the target frequency band fmn according to the frequency selection control signal, connect the target processing unit, and disconnect other processing units except the target processing unit. The baseband processing chip 10 performs filtering, clipping and other processing on the baseband signal to obtain a digital signal, and transmits the digital signal to the ROC 11; the ROC11 converts the digital signal into an analog signal, modulates the analog signal on a target frequency band fmn according to a transmission parameter corresponding to the target frequency band fmn, and transmits the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the target processing unit, so that the target processing unit performs amplification, attenuation, filtering and other processing on the modulated analog signal to obtain a radio frequency signal of a target frequency band fmn, and further, transmits the radio frequency signal of the target frequency band fmn through the multi-frequency antenna 15.

In the second case, if the number of target bands is at least two, if the number of target bands is 2: a target frequency band fm0 and a target frequency band fm1. The baseband processing chip 10 includes a baseband processing unit 0 and a baseband processing unit 1, where the baseband processing unit 0 corresponds to the target frequency band fm0, and the baseband processing unit 1 corresponds to the target frequency band fm1. The antenna is a multi-frequency antenna adopting fm 0-fmn multi-frequency plane (each frequency plane can be understood to correspond to one frequency band) coplanar design, and each frequency band in the multi-frequency antenna corresponds to one feed port. Each feed port of the multi-frequency antenna is connected to a processing unit 14. In this case, the baseband processing chip 10 generates a frequency selection control signal based on the target frequency band fm0 and the target frequency band fm1. Further, the baseband processing chip 10 sends the frequency-selecting control signal to the ROC11, the TXSIP12 and the frequency-selecting switch 13, so that the ROC11 sets transmission parameters (such as a local frequency and a sampling frequency) corresponding to the target frequency band fm0 and the target frequency band fm1 according to the frequency-selecting control signal, and the TXSIP12 and the frequency-selecting switch 13 determine a target processing unit corresponding to the target frequency band fm0 and a target processing unit corresponding to the target frequency band fm1 according to the frequency-selecting control signal, and connect the target processing unit corresponding to the target frequency band fm0 and the target processing unit corresponding to the target frequency band fm1, and disconnect other processing units except the target processing unit. The baseband processing chip 10 performs carrier-level combining on the two baseband signals to obtain a combined signal, and sends the combined signal to the ROC 11; the ROC11 converts the combined signal into an analog signal, modulates the analog signal on a target frequency band fm0 according to a transmission parameter corresponding to the target frequency band fm0, modulates the analog signal on a target frequency band fm1 according to a transmission parameter corresponding to the target frequency band fm1, and sends the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the target processing unit corresponding to the target frequency band fm0 and the target processing unit corresponding to the target frequency band fm1, so that the target processing unit performs processing such as amplification, attenuation, filtering and the like on the modulated analog signal to obtain a target frequency band: the radio frequency signals of the target frequency band fm0 and the target frequency band fm1, and further, the radio frequency signals of the target frequency band fm0 and the target frequency band fm1 are transmitted through the multi-frequency antenna 15.

Case two, the frequency-selective transmitting unit includes an ultra-wideband PA, a plurality of filters, and an antenna. The ultra-wideband PA comprises a plurality of amplification control units, each amplification control unit corresponds to one frequency band, and each filter corresponds to one frequency band. That is, it can be understood that the control transmission module in the radio frequency transmission unit 13 in fig. 2 is composed of an amplification control unit in the ultra wideband PA, a filter, and an antenna. In the multi-frequency communication architecture, TXSSIP is connected with an ultra-wideband PA, the ultra-wideband PA is connected with a plurality of filters, and an antenna is connected with the plurality of filters.

Referring to fig. 4 in particular, fig. 4 is a further multi-frequency communication architecture provided by the present application, and the architecture includes a baseband processing chip 10, a ROC11, a TXSIP12, an ultra-wideband PA 13, a filter 14, and an antenna 15, where the baseband processing chip 10 is connected to the ROC11, the ROC11 is connected to the TXSIP12, the TXSIP12 is connected to the ultra-wideband PA 13, the ultra-wideband PA 13 is connected to a plurality of filters 14, and the antenna 15 is connected to the plurality of filters 14. The ultra-wideband PA comprises a plurality of amplification control units, each amplification control unit corresponds to one frequency band, and each filter corresponds to one frequency band.

In the multi-frequency communication architecture shown in fig. 4, the baseband processing chip 10 is configured to generate a frequency-selective control signal according to channel request information from a terminal device; the system is also used for transmitting a digital signal to the ROC11 and transmitting a frequency-selecting control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13; the frequency-selective control signal carries an identification of the selected target frequency band. The ROC11 is used for setting a transmission parameter corresponding to a target frequency band according to the frequency selection control signal, wherein the transmission parameter comprises a local oscillation frequency and a sampling frequency; the device is also used for converting the digital signal into an analog signal and modulating the analog signal on a target frequency band according to the transmission parameters; and also for transmitting modulated analog signals to TXSIP 12. The TXSIP12 is used for communicating a target amplification control unit corresponding to the target frequency band in the ultra-wideband PA 13 through a gate voltage control circuit and closing amplification control units except the target amplification control unit in the ultra-wideband PA 13; and also for transmitting modulated analog signals to the ultra-wideband PA 13. And the ultra-wideband PA 13 is used for amplifying the modulated analog signal through the target control unit, communicating with a filter corresponding to the target frequency band, and processing the modulated model signal to obtain a radio frequency signal of the target frequency band. And the antenna 15 is used for transmitting the radio frequency signal of the target frequency band.

In the first case, if the number of the target frequency bands is one, if the default operating frequency band of the communication system applying the multi-frequency communication architecture is fm0, the frequency band where the terminal device is located in the channel request information of the terminal device is fmn. In this case, the baseband processing chip 10 determines the frequency band fmn in which the terminal device is located as the target frequency band, and generates the frequency selection control signal. Further, the baseband processing chip 10 sends the frequency selection control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13, so that the operating parameters of the ROC11, the TXSIP12 and the ultra-wideband PA 13 are all adjusted and set according to the target frequency band fmn. The ROC11 sets a transmission parameter (such as a local oscillation frequency and a sampling frequency) corresponding to the target frequency band fmn according to the frequency selection control signal, and the TXSIP12 and the ultra-wideband PA 13 determine a target amplification control unit corresponding to the target frequency band fmn in the ultra-wideband PA 13 according to the frequency selection control signal, communicate with the target amplification control unit through a gate voltage circuit, and disconnect other amplification control units except the target amplification control unit in the ultra-wideband PA 13. The baseband processing chip 10 performs filtering, clipping and other processing on the baseband signal to obtain a digital signal, and transmits the digital signal to the ROC 11; the ROC11 converts the digital signal into an analog signal, modulates the analog signal on a target frequency band fmn according to a transmission parameter corresponding to the target frequency band fmn, and sends the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the ultra-wideband PA 13, so that the ultra-wideband PA 13 amplifies the modulated analog signal through the target amplification control unit, and performs attenuation and filtering through the filter 14 corresponding to the target frequency band to obtain the radio frequency signal of the target frequency band fmn, and further, transmits the radio frequency signal of the target frequency band fmn through the antenna 15.

In the second case, if the number of target bands is at least two, if the number of target bands is 2: a target frequency band fm0 and a target frequency band fm1. The baseband processing chip 10 includes a baseband processing unit 0 and a baseband processing unit 1, where the baseband processing unit 0 corresponds to the target frequency band fm0, and the baseband processing unit 1 corresponds to the target frequency band fm1. The antenna is a broadband antenna connected to a plurality of filters through a feed port. In this case, the baseband processing chip 10 generates a frequency selection control signal based on the target frequency band fm0 and the target frequency band fm1. Further, the baseband processing chip 10 sends the frequency selection control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13, so that the ROC11 sets transmission parameters (such as local oscillation frequency and sampling frequency) corresponding to the target frequency band fm0 and the target frequency band fm1 according to the frequency selection control signal, the TXSIP12 and the ultra-wideband PA 13 determine a target amplification control unit corresponding to the target frequency band fm0 and a target amplification control unit corresponding to the target frequency band fm1 according to the frequency selection control signal, communicate the target amplification control unit corresponding to the target frequency band fm0 and the target amplification control unit corresponding to the target frequency band fm1 through a gate voltage circuit, and disconnect other amplification control units except the target amplification control unit. The baseband processing chip 10 performs carrier-level combining on the two baseband signals to obtain a combined signal, and sends the combined signal to the ROC 11; the ROC11 converts the combined signal into an analog signal, modulates the analog signal on a target frequency band fm0 according to a transmission parameter corresponding to the target frequency band fm0, modulates the analog signal on a target frequency band fm1 according to a transmission parameter corresponding to the target frequency band fm1, and sends the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the ultra-wideband PA 13, so that the ultra-wideband PA 13 performs amplification, attenuation, filtering and other processing on the modulated analog signal through a target amplification control unit corresponding to the target frequency band fm0 and a target amplification control unit corresponding to the target frequency band fm1 to obtain a target frequency band: and further, the radio frequency signals of the target frequency band fm0 and the target frequency band fm1 are transmitted through the broadband antenna 15.

And in the third case, the frequency-selective transmitting unit comprises an ultra-wideband PA and a filtering antenna, wherein the ultra-wideband PA comprises a plurality of amplification control units, and each amplification control unit corresponds to one frequency band. I.e. it can be understood that the control transmission module in fig. 2 consists of one amplification control unit and a filtering antenna in the ultra-wideband PA. In the multi-frequency communication architecture, TXSSIP is connected with an ultra-wideband PA, and a filtering antenna is connected with the ultra-wideband PA through a plurality of feed ports; wherein:

referring to fig. 5 in particular, fig. 5 is a further multi-frequency communication architecture provided by the present application, which includes a baseband processing chip 10, a ROC11, a TXSIP12, an ultra-wideband PA 13, and a filtering antenna 14, where the baseband processing chip 10 is connected to the ROC11, the ROC11 is connected to the TXSIP12, the TXSIP12 is connected to the ultra-wideband PA 13, and the filtering antenna 14 is connected to the ultra-wideband PA 13 through a plurality of feeding ports; wherein:

in the multi-frequency communication architecture shown in fig. 5, the baseband processing chip 10 is configured to generate a frequency-selective control signal according to channel request information from a terminal device; the system is also used for transmitting a digital signal to the ROC11 and transmitting a frequency-selecting control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13; the frequency selection control signal carries an identifier of a target frequency band. The ROC11 is used for setting a transmission parameter corresponding to a target frequency band according to the frequency selection control signal, wherein the transmission parameter comprises a local oscillation frequency and a sampling frequency; the device is also used for converting the digital signal into an analog signal and modulating the analog signal on a target frequency band according to the transmission parameters; the transmitter is also used for transmitting the modulated analog signal to the TXSSIP 12; and the TXSIP12 is used for turning on a target amplification control unit corresponding to the target frequency band in the ultra-wideband PA 13 through the gate voltage control circuit and turning off the amplification control units except the target amplification control unit in the ultra-wideband PA 13. And the ultra-wideband PA 13 is used for processing the modulated model signal to obtain a radio frequency signal of a target frequency band. The filtering antenna 14 is configured to transmit a radio frequency signal in a target frequency band.

The filtering antenna 14 can transmit radio frequency signals of a frequency band fm 0-fmn, the filtering antenna 14 is connected with the ultra-wideband PA 13 through a plurality of feed ports, the ultra-wideband PA 13 comprises a plurality of amplification control units, each amplification control unit corresponds to one frequency band, the filtering antenna 14 comprises a plurality of second processing units, each second processing unit corresponds to one frequency band, and each second processing unit comprises an antenna oscillator and a cavity filter.

In the first case, if the number of the target frequency bands is one, the frequency band where the terminal device is located in the channel request information of the terminal device is fmn, if the default operating frequency band of the communication system applying the multi-frequency communication architecture is fm 0. In this case, the baseband processing chip 10 determines the frequency band fmn in which the terminal device is located as the target frequency band, and generates the frequency selection control signal. Further, the baseband processing chip 10 sends the frequency selection control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13, so that the operating parameters of the ROC11, the TXSIP12 and the ultra-wideband PA 13 are all adjusted and set according to the target frequency band fmn. The ROC11 sets a transmission parameter (such as a local oscillation frequency and a sampling frequency) corresponding to the target frequency band fmn according to the frequency selection control signal, and the TXSIP12 and the ultra-wideband PA 13 determine a target amplification control unit corresponding to the target frequency band fmn in the ultra-wideband PA 13 according to the frequency selection control signal, communicate with the target amplification control unit through a gate voltage circuit, and disconnect other amplification control units except the target amplification control unit in the ultra-wideband PA 13. The baseband processing chip 10 performs filtering, clipping and other processing on the baseband signal to obtain a digital signal, and sends the digital signal to the ROC 11; the ROC11 converts the digital signal into an analog signal, modulates the analog signal on a target frequency band fmn according to a transmission parameter corresponding to the target frequency band fmn, and transmits the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the ultra-wideband PA 13, so that the ultra-wideband PA 13 amplifies the modulated analog signal through the target amplification control unit, and further, the ultra-wideband PA 13 sends the amplified analog signal to the filtering antenna 14. The filtering antenna 14 transmits the radio frequency signal of the target frequency band fmn.

In the second case, if the number of target bands is at least two, if the number of target bands is 2: a target frequency band fm0 and a target frequency band fm1. The baseband processing chip 10 includes a baseband processing unit 0 and a baseband processing unit 1, where the baseband processing unit 0 corresponds to the target frequency band fm0, and the baseband processing unit 1 corresponds to the target frequency band fm1. The antenna is a broadband antenna connected to a plurality of filters through a feed port. In this case, the baseband processing chip 10 generates a frequency selection control signal based on the target frequency band fm0 and the target frequency band fm1. Further, the baseband processing chip 10 sends the frequency selection control signal to the ROC11, the TXSIP12 and the ultra-wideband PA 13, so that the ROC11 sets transmission parameters (such as a local oscillation frequency and a sampling frequency) corresponding to the target frequency band fm0 and the target frequency band fm1 according to the frequency selection control signal, the TXSIP12 and the ultra-wideband PA 13 determine a target amplification control unit corresponding to the target frequency band fm0 and a target amplification control unit corresponding to the target frequency band fm1 according to the frequency selection control signal, connect the target amplification control unit corresponding to the target frequency band fm0 and the target amplification control unit corresponding to the target frequency band fm1 through a gate voltage circuit, and disconnect other amplification control units except the target amplification control unit. The baseband processing chip 10 performs carrier-level combining on the two baseband signals to obtain a combined signal, and sends the combined signal to the ROC 11; the ROC11 converts the combined signal into an analog signal, modulates the analog signal on a target frequency band fm0 according to a transmission parameter corresponding to the target frequency band fm0, modulates the analog signal on a target frequency band fm1 according to a transmission parameter corresponding to the target frequency band fm1, and sends the modulated analog signal to the TXSSIP 12; the TXSIP12 sends the modulated analog signal to the ultra-wideband PA 13, so that the ultra-wideband PA 13 performs amplification, attenuation, filtering and other processing on the modulated analog signal through a target amplification control unit corresponding to the target frequency band fm0 and a target amplification control unit corresponding to the target frequency band fm1, and obtains a target frequency band: and further, the radio frequency signals of the target frequency band fm0 and the target frequency band fm1 are transmitted through the filtering antenna 14.

The application also provides a signal transmitting method, which is applied to the network equipment and is suitable for the application scene of the network equipment with light load or no load. Referring to fig. 6, fig. 6 is a schematic flow chart of a signal transmission method. As shown in fig. 6, the signal transmission method includes S601 to S603. The method execution subject shown in fig. 6 may be a network device, a chip or a chip system of the network device, or the like. Fig. 6 illustrates an example of an execution subject of the method by using a network device. Wherein:

s601, the network equipment acquires frequency band information of a first frequency band where the terminal equipment is located.

The network device receives channel request information from the terminal device, where the channel request information includes frequency band information of a first frequency band in which the terminal device is located, and the first frequency band may be understood as an operating frequency band when the terminal device sends the channel request information.

S602, the network device sends the radio frequency signal based on the second frequency band under the condition that the first frequency band is equal to the second frequency band corresponding to the network device.

The second frequency band corresponding to the network device may be understood as an operating frequency band in which the network device currently transmits the radio frequency signal. The network device determines whether the first frequency band corresponding to the terminal device is equal to the second frequency band corresponding to the network device. When the first frequency band is equal to the second frequency band, the network device transmits the radio frequency signal based on the second frequency band, that is, the network device does not change the working frequency band of the currently transmitted radio frequency signal.

S603, under the condition that the first frequency band is not equal to the second frequency band corresponding to the network equipment, the network equipment sends the radio frequency signal based on the first frequency band.

Under the condition that the first frequency band is not equal to the second frequency band, the network device sends the radio frequency signal based on the first frequency band, that is, the network device changes the working frequency band of the currently sent radio frequency signal, and the network device switches the working frequency band of the currently sent radio frequency signal to the frequency band corresponding to the terminal device.

The application also provides another signal transmitting method, which is applied to the network equipment and is suitable for application scenes with larger network equipment loads. Referring to fig. 7, fig. 7 is a schematic flow chart of a signal transmission method. As shown in fig. 7, the signal transmission method includes S701 to S703. The method execution subject shown in fig. 7 may be a network device, a chip or a chip system of the network device, or the like. Fig. 7 illustrates an example of an execution subject of the method by using a network device. Wherein:

s701, the network equipment acquires frequency band information of the terminal equipment in the service cell.

The network device receives channel request information of all terminal devices in a service cell of the network device, wherein the channel request information comprises frequency range information of the terminal devices and frequency range information supported by operators corresponding to the terminal devices.

Illustratively, terminal device 1, terminal device 2, and terminal device 3 are included in the cell served by the network device. The channel reporting request information on the terminal device 1 is as follows: the frequency band is fm0, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 2 is: the frequency band is fm1, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 3 is: the frequency band is fm2, and the frequency bands supported by the operator are fm0, fm1 and fm2.

S702, the network equipment determines at least two target frequency bands based on the frequency band information of the terminal equipment in the service cell.

The network equipment counts the load state of each frequency band in the frequency band information supported by the operator, and determines at least two target frequency bands according to the load state of each frequency band.

Exemplarily, a cell served by a network device has a plurality of terminal devices, where the channel request information reported by the terminal device 1 is: the frequency band is fm0, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 2 is: the frequency band is fm1, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 3 is: the frequency band is fm2, and the frequency bands supported by the operator are fm0, fm1 and fm2. If the maximum tolerable 6 terminal devices in the fm0 frequency band and the frequency band where 4 terminal devices currently exist in the cell served by the network device are fm0, the load state of fm0 can be 66.7% from 4/6; the maximum tolerable 6 terminal devices in the fm1 frequency band, and the frequency band where 3 terminal devices currently exist in the cell served by the network device is fm1, the load state of fm1 can be 50% from 3/6; the maximum tolerable 6 terminal devices in the fm2 frequency band, and the frequency band where 2 terminal devices currently exist in the cell served by the network device is fm2, the load state of fm2 can be 33.3% from 2/6. The network device determines a frequency band with a load state greater than or equal to a first value as a target frequency band, in this case, if the first value is 50%, the network device determines a frequency band with a load state greater than or equal to 50% as the target frequency band, that is, determines a frequency band fm0 and a frequency band fm1 of an operator as the target frequency band, and generates a frequency selection control signal according to fm0 and fm1.

And S703, the network equipment transmits radio frequency signals based on the at least two target frequency bands.

Exemplarily, a cell served by a network device has a plurality of terminal devices, where the channel request information reported by the terminal device 1 is: the frequency band is fm0, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 2 is: the frequency band is fm1, and the frequency bands supported by an operator are fm0, fm1 and fm2; the channel request information reported by the terminal device 3 is: the frequency band is fm2, and the frequency bands supported by the operator are fm0, fm1 and fm2. If the target frequency bands are fm0 and fm1, the terminal device 3 not in the target frequency bands is the first terminal device. The network device sends a frequency band switching instruction to the terminal device 3, where the frequency band switching instruction may carry an identifier of a target frequency band, so that the terminal device 3 switches to the target frequency band (frequency band fm0 or frequency band fm 1). Specifically, which target frequency band of the multiple target frequency bands the terminal device 3 switches to may be determined according to an algorithm of the terminal device or a load condition of each target frequency band, which is not a main content of the present solution, and therefore, will not be discussed in detail herein.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and steps executed by each device and apparatus provided in the embodiments of the present application may refer to the relevant description of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-frequency communication architecture is characterized in that the architecture is applied to network equipment and comprises a baseband processing chip, a radio frequency integrated chip (ROC), a downlink module TXSIP and a frequency-selecting transmitting unit; the baseband processing chip is connected with the ROC, the ROC is connected with the TXSET, the TXSET is connected with the frequency-selecting transmitting unit, the frequency-selecting transmitting unit comprises a plurality of control transmitting modules, and each control transmitting unit corresponds to one frequency band; wherein:

the baseband processing chip is used for generating a frequency selection control signal according to the channel request information from the terminal equipment; and further configured to transmit a digital signal to the ROC and the frequency-selective control signal to the ROC, the TXSIP, and the frequency-selective transmission unit; the frequency selection control signal carries an identifier of the selected target frequency band;

the ROC is used for setting a transmission parameter corresponding to the target frequency band according to the frequency selection control signal, and the transmission parameter comprises a local oscillation frequency and a sampling frequency; the digital signal is converted into an analog signal, and the analog signal is modulated on a target frequency band according to the transmission parameter; the transmitter is also used for transmitting the modulated analog signal to the TXSIP;

the TXSET is used for sending the modulated analog signal to the frequency-selecting transmitting unit;

the frequency-selecting transmitting unit is used for determining a target control transmitting module corresponding to the target frequency band from the plurality of control transmitting modules; connecting the target control transmitting module and disconnecting the control transmitting modules except the target control transmitting module; and processing the modulated analog signal through the target control transmitting module to obtain a radio frequency signal, and transmitting the radio frequency signal.

2. The architecture of claim 1, wherein the frequency selective transmit unit comprises a frequency selective switch, a plurality of processing units and an antenna, each processing unit comprising a Power Amplifier (PA) and a filter; the control transmitting module consists of a processing unit, the frequency selecting switch and the antenna; the TXSIP is connected with the frequency selecting switch; wherein:

the frequency selection switch is used for connecting the processing units corresponding to the target frequency band based on the frequency selection control signal and disconnecting the processing units except the target processing unit in the plurality of processing units; the transmitter is further configured to receive the modulated analog signal from the TXSIP and transmit the modulated analog signal to the target processing unit;

the target processing unit is used for processing the modulated model signal to obtain a radio frequency signal of a target frequency band;

and the antenna is used for transmitting the radio frequency signal of the target frequency band.

3. The architecture of claim 1, wherein the frequency selective transmission unit comprises an ultra-wideband Power Amplifier (PA), a plurality of filters, and an antenna; the TXSSIP is connected with the ultra-wideband PA, the ultra-wideband PA is connected with the plurality of filters, and the antenna is connected with the plurality of filters; the ultra-wideband PA comprises a plurality of amplification control units, each amplification control unit corresponds to one frequency band, and each filter corresponds to one frequency band; the control transmitting module consists of an amplification control unit, a filter and an antenna in the ultra-wideband PA; wherein:

the ultra-wideband PA is used for connecting a target amplification control unit corresponding to the target frequency band in the ultra-wideband PA through a grid voltage control circuit and disconnecting the amplification control units except the target amplification control unit in the ultra-wideband PA; further for receiving the modulated analog signal from the TXSIP; the target control unit is further configured to amplify the modulated analog signal, communicate with a filter corresponding to the target frequency band, and process the modulated model signal to obtain a radio frequency signal of the target frequency band;

4. The architecture of claim 1, wherein the frequency selective transmitting unit comprises an ultra-wideband Power Amplifier (PA) and a filtering antenna, the ultra-wideband PA comprises a plurality of amplification control units, and each amplification control unit corresponds to one frequency band; the control transmitting module consists of an amplification control unit and a filtering antenna in the ultra-wideband PA; the TXSET is connected with the ultra-wideband PA, and the filtering antenna is connected with the ultra-wideband PA through a plurality of feed ports; wherein:

the ultra-wideband PA is used for starting a target amplification control unit corresponding to the target frequency band in the ultra-wideband PA through a grid voltage control circuit and disconnecting the amplification control units except the target amplification control unit in the ultra-wideband PA; further for receiving the modulated analog signal from the TXSIP; processing the modulated model signal through the target control unit to obtain a radio frequency signal of a target frequency band;

and the filtering antenna is used for transmitting the radio frequency signal of the target frequency band.

5. The architecture of any of claims 1-4, wherein the channel request information includes a frequency band in which the terminal device is located; the baseband processing chip generates a frequency selection control signal according to the channel request information from the terminal equipment, and the frequency selection control signal comprises the following steps:

and under the condition that the frequency band of the terminal equipment is different from the working frequency band of the network equipment, generating a frequency selection control signal according to the frequency band of the terminal equipment, wherein the target frequency band is the frequency band of the terminal equipment.

6. The architecture of any one of claims 1-4, wherein the number of the target frequency bands is at least two, the baseband processing chip comprises a plurality of baseband processing units, each baseband processing unit corresponds to one target frequency band,

the baseband processing chip is also used for compensating the amplitude difference among all target frequency bands in a digital domain;

and the ROC is also used for compensating the amplitude difference among all target frequency bands in the analog public channel.

7. The architecture of claim 6, wherein the channel request information includes a frequency band in which the terminal device is located and a load status of each frequency band of a plurality of frequency bands supported by an operator corresponding to the terminal device; the baseband processing chip is configured to generate a frequency-selective control signal according to channel request information from a terminal device, and includes:

determining at least two target frequency bands from the plurality of frequency bands based on the load state of each frequency band, wherein the load state of the target frequency band is greater than a first value;

and generating a frequency selection control signal based on the target frequency band.

8. The architecture of claim 7, wherein the baseband processing chip is further configured to:

and if the target frequency band does not contain the frequency band where the first terminal device is located, sending a frequency band switching instruction to the first terminal device, wherein the frequency band switching instruction is used for indicating the first terminal device to switch to the target frequency band.