CN112087797A

CN112087797A - Method, communication device and computer readable medium for data transmission and reception

Info

Publication number: CN112087797A
Application number: CN201910511498.0A
Authority: CN
Inventors: 王航; 陈宥华; 王元哲
Original assignee: Nanjing Core Singularity Semiconductor Co ltd
Current assignee: Nanjing Core Singularity Semiconductor Co ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-12-15

Abstract

Methods, communication devices, and computer-readable media for data transmission and reception are provided. For data transmission, the method includes generating a plurality of intermediate frequency signals associated with data in a first frequency range. The method also includes converting the plurality of intermediate frequency signals to a plurality of radio frequency signals in a second frequency range, the first frequency range being different from the second frequency range. The method further includes transmitting a plurality of radio frequency signals via a plurality of channels, the plurality of channels having frequencies within a second frequency range, the plurality of channels being allocated different frequency bandwidths. Embodiments of the present disclosure may enable aggregation of any number of channels and dynamic allocation of frequency bandwidth per channel.

Description

Method, communication device and computer readable medium for data transmission and reception

Technical Field

Embodiments of the present disclosure relate generally to communication technology and, more particularly, relate to a method, a communication device, and a computer-readable medium for transmission and reception of data in a communication system.

Background

With the rapid increase of the service scales of automatic power distribution control, power consumption information acquisition, accurate load control and the like of a power grid, new applications of new services such as clean energy, electric vehicles, distributed power supplies, smart homes and the like are increasing day by day, and the new applications provide higher requirements for the safety, reliability, real-time performance, universality and broadband of a power communication system, and the traditional public mobile communication, power line carrier and narrow-band wireless systems are difficult to meet.

In a conventional communication system, transmission and reception of signals are performed on a fixed number of channels having a prescribed frequency bandwidth, which has not been able to satisfy the requirements of real-time access and precise control of a large number of power terminals in a power system.

Disclosure of Invention

According to an example embodiment of the present disclosure, a technical solution for transmission and reception of data in a communication system is provided.

In a first aspect of the present disclosure, a method for transmitting data in a communication system is provided. The method includes generating a plurality of intermediate frequency signals associated with the data in a first frequency range. The method also includes converting the plurality of intermediate frequency signals in the first frequency range to a plurality of radio frequency signals in a second frequency range, the first frequency range being different from the second frequency range. The method further includes transmitting the plurality of radio frequency signals via a plurality of channels, the plurality of channels having frequencies within the second frequency range, and the plurality of channels being allocated different frequency bandwidths.

In a second aspect of the disclosure, a method for receiving data in a communication system is provided, the method comprising receiving a plurality of radio frequency signals associated with the data via a plurality of channels, the plurality of channels having frequencies within a second frequency range and the plurality of channels being allocated different frequency bandwidths. The method also includes converting the plurality of radio frequency signals to a plurality of intermediate frequency signals in a first frequency range, the first frequency range being different from the second frequency range. The method further includes combining the plurality of intermediate frequency signals to obtain the data.

In a third aspect of the disclosure, a communication device is provided. The communication device comprises a processor, and a memory coupled with the processor, the memory having instructions stored therein that, when executed by the processor, cause the network device to perform the method according to the first or second aspect.

In a fourth aspect of the disclosure, a computer-readable medium is provided. The computer-readable medium has stored thereon computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the method according to the first or second aspect.

It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

fig. 1 is a schematic diagram of a communication system in which embodiments described in the present disclosure may be implemented;

fig. 2 shows a schematic diagram of a communication process in a communication system according to some embodiments of the present disclosure;

fig. 3 shows a schematic diagram of an example process of transmission and reception of signals, in accordance with some embodiments of the present disclosure;

fig. 4 illustrates a flow diagram of a communication process for transmitting a signal, in accordance with some embodiments of the present disclosure;

fig. 5 illustrates a flow diagram of a communication process for receiving a signal, in accordance with some embodiments of the present disclosure; and

fig. 6 illustrates a simplified block diagram of a device suitable for implementing embodiments of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

In describing embodiments of the present disclosure, the terms "include" and its derivatives should be interpreted as being inclusive, i.e., "including but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.

The term "network device" as used herein refers to a base station or other entity or node having a particular function in a communication network. A "base station" (BS) may represent a node B (NodeB or NB), an evolved node B (eNodeB or eNB), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a relay, or a low power node such as a pico base station, a femto base station, or the like. The coverage area of a base station, i.e. the geographical area where it is able to provide service, is called a cell. In the context of the present disclosure, the terms "network device" and "base station" may be used interchangeably for purposes of discussion convenience, and may primarily be referred to as an eNB as an example of a network device.

The term "terminal device" as used herein refers to any electronic device capable of wireless communication with base stations or with each other. As an example, the terminal device may include a Mobile Terminal (MT), a Subscriber Station (SS), a Portable Subscriber Station (PSS), a Mobile Station (MS), or an Access Terminal (AT), and the above-described devices in a vehicle. The terminal device may be any type of mobile terminal, fixed terminal, or portable terminal including a mobile handset, station, unit, device, multimedia computer, multimedia tablet, internet node, communicator, desktop computer, laptop computer, notebook computer, netbook computer, tablet computer, Personal Communication System (PCS) device, personal navigation device, Personal Digital Assistant (PDA), audio/video player, digital camera/camcorder, positioning device, television receiver, radio broadcast receiver, electronic book device, game device, or other device that may be used for communication, or any combination of the above. In particular, in an internet of things (IoT) system, a terminal device may be an IoT terminal device, including smart appliances (electric cookers, refrigerators, washing machines, water heaters, etc.), smart meters (water meters, electricity meters, gas meters, etc.), smart electronics (smoke alarms, switches, transformers, etc.), and/or any other electronic device that may be networked.

Fig. 1 depicts a communication system 100 in which embodiments of the present disclosure may be implemented. The communication system 100 includes a network device 110 and terminal devices 120-1, 120-2, 120-3, and 120-4 within a serving cell 112 of the network device 110. For ease of discussion, these terminal devices 120-1, 120-2, 120-3, and 120-4 may be collectively or individually referred to as terminal devices 120.

The network device 110 and the terminal device 120 may communicate with each other in order to transmit various service data, control information, and the like. The transmitting end of the transmission may be network device 110 and the receiving end may be one or more terminal devices 120. In other cases, the transmitting end of the transmission may be terminal device 120 and the receiving end may be network device 110.

Communications in communication system 100 may be implemented in accordance with any suitable communication protocol, including, but not limited to, first-generation (1G), second-generation (2G), third-generation (3G), fourth-generation (4G), and fifth-generation (5G) cellular communication protocols, wireless local area network communication protocols such as Institute of Electrical and Electronics Engineers (IEEE)802.11, and/or any other protocol now known or later developed. In the example of fig. 1, the communication system 100 is illustrated as an internet of things (IoT) communication system, which is merely exemplary, and the communication system 100 may also be any other communication system that is the same as the transmission of data.

In an IoT communication system, the terminal device 120 may include IoT communication devices, such as various smart appliances, smart meters, smart electronics, and/or any other electronic device that may be networked. In some cases, network device 110 may serve a larger number of terminal devices 120.

It should be understood that although a certain number of terminal devices 120 are shown in fig. 1, network device 110 may serve more or fewer terminal devices, and the types of terminal devices served may be the same or different. For example, in some deployments, terminal devices such as mobile phones, laptops, etc. may also be present in the serving cell 112, and these terminal devices may also be served by the network device 110. Further, the communication system 100 may include more network devices and terminal devices served thereby. Although an IoT communication system is discussed below as an example, it should be understood that aspects in accordance with embodiments of the present disclosure may be similarly applied to other types of communication systems.

As mentioned above, in the conventional data transmission and reception scenario, the transmission and reception of signals are performed on a fixed number of channels having a specified frequency bandwidth, which has not been able to meet the requirements of real-time access and precise control of a large number of power terminals in a power system.

For example, if W represents the frequency bandwidth of one channel, then for a modem that can perform 3 channel aggregation, it can only perform channel aggregation of W + W and W + W, i.e. aggregation of 2 channels or 3 channels, and wherein the frequency bandwidth W of each channel is fixed. It cannot achieve aggregation of 4 channels and cannot change the value of W, which is disadvantageous for real-time and large-volume data transmission.

In view of the above-mentioned problems, as well as other potential problems, inherent in conventional approaches, embodiments of the present disclosure provide a solution for reducing power consumption of a communication device, the basic idea of which is to transmit or receive signals over a configurable number and frequency bandwidth of individual channels within a predetermined frequency range in their entirety at the communication device using a DSP-based configurable baseband processor and radio front-end circuitry to achieve dynamic carrier aggregation. In this way, aggregation of any number of channels and dynamic allocation of frequency bandwidth per channel may be achieved, increasing the throughput and speed of transmitting or receiving data.

Fig. 2 illustrates a communication process 200 in a communication system according to some embodiments of the present disclosure. Process 200 involves a first device 240 and a second device 250. The first device 240 desires to transmit data to the second device 250. In one example, the data may be a current period of electricity cost, a historical current period of electricity cost, and a future number of hours of electricity cost. This is merely exemplary, and the first device 240 may transmit any data to the second device 250. In some embodiments, the first device 240 may be a network device as shown in fig. 1 and the second device 250 may be a terminal device as shown in fig. 1. It is to be understood that this is by way of illustration and not of limitation. In other embodiments, the first device 240 may be a terminal device as shown in fig. 1, and the second device 250 may be a network device as shown in fig. 1.

In embodiments where the first device 240 transmits data, the first device 240 correlates a plurality of intermediate frequency signals with the data to be transmitted. The plurality of intermediate frequency signals are converted into a plurality of radio frequency signals. The plurality of radio frequency signals are transmitted to the second device 250 via a plurality of channels. This will be described in detail below in conjunction with fig. 1 and 3.

First, at 205, the first device 240 determines the number of signals to be transmitted and channels carrying the corresponding signals according to the type of data to be transmitted, the size of the data, and the channel state information CSI, and determines the frequency bandwidth of each channel. The first device 240 generates a determined number of intermediate frequency signals associated with data to be transmitted in a first frequency range. As shown in the third graph in example 300 of fig. 3, the hatched diagonal portions indicate a plurality of channels.

In some embodiments, the plurality of channels are separated in frequency from each other, and the frequency bandwidth of each channel may be the same or different from each other according to the type and size of data, which is advantageous in that it is not necessary to transmit data using a fixed number of channels having the same frequency bandwidth as in conventional data transmission, and more channels may be dynamically allocated for large complex data, which is advantageous in saving resources of the communication channel.

In some embodiments, the frequency bandwidth of each of the plurality of channels is an integer multiple of 25kHz, which is merely an example channel frequency bandwidth and is not a limitation of embodiments of the present disclosure. Note that the above description is merely exemplary, and in other examples, data may also be transmitted using channels having any other frequency bandwidth.

In some embodiments, the lower limit of the first frequency range is not zero, i.e. the frequency of the signal is not zero, which has the advantage of reducing the requirements of the subsequent digital-to-analog conversion on the device, thereby reducing the cost and reducing the power consumption, and that the signal-to-noise ratio of the signal at zero frequency is large and not easy to process.

Next, at 210, the first device 240, for example, up-converts the plurality of intermediate frequency signals in the first frequency range to a plurality of radio frequency signals in the second frequency range. Here, the up-conversion means to convert the intermediate frequency signals in a first frequency range (IF +0MHz, IF +12MHz) as shown in fig. 3, where IF represents the intermediate frequency, into radio frequency signals in a second frequency range higher than the first frequency range as a whole so as to be transmitted in free space.

In some embodiments, the second frequency range is 223MHz to 235 MHz. Note that this is merely an exemplary data transmission frequency range. In other embodiments, channels having any other frequency bandwidth may also be utilized to transmit data.

In some embodiments, the converting includes performing digital-to-analog conversion on the plurality of intermediate frequency signals to obtain a plurality of analog signals, and converting the plurality of analog signals to the plurality of radio frequency signals, at 210. This is only one way of conventional signal processing and any now known future developed technique may be used for signal processing.

In some embodiments, at 205 and 210, for example, by a Digital Signal Processing (DSP) based configurable baseband processor in the first device 240, the DSP configurable baseband processor has an advantage over a conventional hardware baseband processor in that it can implement any number of channel aggregations and dynamic allocation of channels to implement dynamic carrier aggregation to achieve accurate and timely transmission of data. This is merely exemplary and other types of baseband processors may be used to implement the above described operations.

Finally, at 215, the first device 240 transmits the plurality of radio frequency signals via a plurality of channels, the plurality of channels having frequencies within a second frequency range, and the plurality of channels being allocated different frequency bandwidths. In some embodiments, this transmission may be implemented by any type of radio frequency front end circuitry. It should be appreciated that this is merely exemplary and that any other means of achieving the functionality in 215 may be used.

In some embodiments, the number of the plurality of channels and the frequency bandwidth of each channel are configurable. This is particularly advantageous for data transmission in power, which increases the throughput and speed of transmitting or receiving data.

For reception of data, at the second device 250, a plurality of radio frequency signals associated with the data are received via a plurality of channels. Converting the plurality of radio frequency signals into a plurality of intermediate frequency signals. Then, the plurality of intermediate frequency signals are combined to obtain data. This will be described in detail below in conjunction with fig. 1 and 3.

First, at 220, the second device 250 receives a plurality of radio frequency signals associated with data to be received via a plurality of channels, the plurality of channels having frequencies within a second frequency range, and the plurality of channels being allocated different frequency bandwidths.

In some embodiments, the step 220 can be implemented by any type of rf front-end circuit apparatus, wherein the overall reception of the rf signal in the second frequency range has the advantage of saving the process of filtering the signal, resulting in lower hardware requirements for the second device 250, thereby saving cost and reducing power consumption.

In some embodiments, the second frequency range is 223MHz to 235 MHz. Note that this is merely exemplary, and in other examples, data may also be received on a channel having any other frequency bandwidth.

In some embodiments, the first device 240 determines the number of channels used and the frequency bandwidth of each channel according to the type of data, the size of the data, and the channel state information CSI, which has the advantage of adopting different dynamic channel allocations for data of different sizes and complexity, thereby saving resources of the communication channel and reducing power consumption and cost.

In some embodiments, the first device 240 informs the second device 250 of the determined number of channels and the frequency bandwidth of each channel in advance in order to receive data. This has the advantage of speeding up the reception of data.

Next, at 225, as shown in the exemplary process 300 of fig. 3, the second device 250 down-converts the plurality of radio frequency signals in the second frequency range collectively into a plurality of intermediate frequency signals in the first frequency range, where down-converting refers to collectively converting the radio frequency signals in the second frequency range as shown in fig. 3 into intermediate frequency signals in a first frequency range (IF +0MHz, IF +12MHz) lower than the second frequency range for baseband processing.

In some embodiments, the lower limit of the first frequency range is not zero, i.e. the frequency of the signal is not zero, which has the advantage of reducing the requirements of the subsequent analog-to-digital conversion on the equipment, thereby reducing the cost and reducing the power consumption, and that the signal-to-noise ratio of the signal at zero frequency is large and is not easy to process.

In some embodiments, at 225, the plurality of radio frequency signals may also be analog-to-digital converted to obtain a plurality of digital signals, and the converted plurality of digital signals may be further converted to a plurality of intermediate frequency signals. This is only one way of conventional signal processing and any now known future developed technique may be used for signal processing.

In some embodiments, the operations illustrated at 220 and 225 may be implemented by any type of radio frequency front end circuitry. This is merely exemplary and any other means of achieving the functionality in 220 and 225 may be used.

Finally, at 230, the second device 250 combines the plurality of intermediate frequency signals to obtain the data. As shown in the third graph of fig. 3, the hatched portions represent a plurality of channels of different frequency bandwidths carrying the plurality of intermediate frequency signals.

In some embodiments, the above 230 is implemented, for example, by a DSP (digital signal processing) based configurable baseband processor in the second device 250, which has the advantage over a conventional hardware baseband processor that it can implement any number of channel aggregations and dynamic allocation of channels to implement dynamic carrier aggregation to achieve accurate and timely transmission of data. This is merely exemplary and other types of baseband processors may be used to implement the above described operations.

Fig. 4 illustrates a flow diagram of a communication process 400 for transmitting a signal, in accordance with some embodiments of the present disclosure. It is to be appreciated that process 400 may be implemented, for example, at network device 110 as shown in fig. 1. For ease of description, process 400 is described below in conjunction with FIG. 1.

At 410, the first device 240 generates a plurality of intermediate frequency signals associated with the data within a first frequency range. At 420, the first device 240 converts the plurality of intermediate frequency signals in a first frequency range to a plurality of radio frequency signals in a second frequency range, the first frequency range being different from the second frequency range. At 430, the first device 240 transmits a plurality of radio frequency signals via a plurality of channels, the plurality of channels having frequencies within a second frequency range, and the plurality of channels being allocated different frequency bandwidths.

In some embodiments, the number of the plurality of channels and the frequency bandwidth of each channel are configurable.

In some embodiments, the first device 240 determines the number of the plurality of channels and the frequency bandwidth of each channel based on at least one of: the type of data, the size of the data and the channel state information CSI.

In some embodiments, the lower limit of the first frequency range is greater than zero and less than the lower limit of the second frequency range, and the upper limit of the first frequency range is less than the upper limit of the second frequency range.

In some embodiments, the second frequency range is 223MHz to 235MHz, and the frequency bandwidth of the first frequency range is 12 MHz.

In some embodiments, the frequency bandwidth of each of the plurality of channels is an integer multiple of 25 kHz.

In some embodiments, the first device 240 converting the plurality of intermediate frequency signals to the plurality of radio frequency signals comprises: performing digital-to-analog conversion on the plurality of intermediate frequency signals to obtain a plurality of analog signals; and converting the plurality of analog signals into a plurality of radio frequency signals.

In some embodiments, the communication system comprises an internet of things communication system.

Fig. 5 illustrates a flow diagram of a communication process 500 for receiving a signal, in accordance with some embodiments of the present disclosure. It is to be appreciated that the process 500 can be implemented, for example, at the second device 250 as shown in fig. 1. For ease of description, process 500 is described below in conjunction with FIG. 1.

At 510, the second device 250 receives a plurality of radio frequency signals associated with the data via a plurality of channels, the plurality of channels having frequencies within a second frequency range, and the plurality of channels being allocated different frequency bandwidths. At 520, the second device 250 converts the plurality of radio frequency signals to a plurality of intermediate frequency signals in a first frequency range, the first frequency range being different from the second frequency range. At 530, the second device 250 combines the multiple intermediate frequency signals to obtain data.

In some embodiments, the number of the plurality of channels and the frequency bandwidth of each channel is determined based on at least one of: the type of data, the size of the data and the channel state information CSI.

In some embodiments, the second device 250 converting the plurality of radio frequency signals into the plurality of intermediate frequency signals comprises: performing analog-to-digital conversion on the plurality of radio frequency signals to obtain a plurality of digital signals; and converting the plurality of digital signals into a plurality of intermediate frequency signals.

Fig. 6 illustrates a simplified block diagram of a device 600 suitable for implementing embodiments of the present disclosure. The device 600 may be used to implement a communication device, such as the first device 240 and the second device 250 in fig. 1. As shown, the device 600 includes one or more processors 610, one or more memories 620 coupled to the processors 610, and one or more communication modules 640 coupled to the processors 610.

The communication module 640 is for bidirectional communication. The communications module 640 has at least one cable/fiber/wireless interface for facilitating communications. A communication interface may represent any interface necessary to communicate with other devices.

The processor 610 may be of any type suitable to the local technical environment, and may include one or more of the following as non-limiting examples: general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs) and processors based on a multi-core processor architecture. Device 600 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time with a clock synchronized to the main processor.

The memory 620 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memory include, but are not limited to, Read Only Memory (ROM)624, electrically Erasable Programmable Read Only Memory (EPROM), flash memory, a hard disk, a Compact Disk (CD), a Digital Versatile Disk (DVD), and other magnetic and/or optical storage devices. Examples of volatile memory include, but are not limited to, Random Access Memory (RAM)622 or other volatile memory that cannot be persisted during a power loss.

The computer programs 630 include computer-executable instructions that are executable by the associated processor 610. The program 630 may be stored in the ROM 624. The processor 610 may perform various appropriate actions and processes by loading the program 630 into the RAM 622.

Embodiments of the present disclosure may be implemented by program 630 to cause device 600 to perform any of the processes of the present disclosure as discussed above with reference to fig. 4 and 5. Embodiments of the present disclosure may also be implemented by hardware or a combination of software and hardware.

In some embodiments, program 630 may be tangibly embodied on a computer-readable medium. Such computer-readable media may be included in device 600 (e.g., memory 620) or in other storage accessible by device 600. Device 600 can read program 630 from the computer-readable medium into RAM 622 for execution. The computer readable medium may include various tangible non-volatile storage devices such as ROM, EPROM, flash memory, a hard disk, a CD, a DVD, and so forth. Fig. 6 shows an example of a computer-readable medium 600 in the form of a CD or DVD. The computer-readable medium 600 has a program 630 stored thereon.

In general, the various example embodiments of this disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. For example, in some embodiments, various examples of the disclosure (e.g., a method, apparatus, or device) may be partially or fully implemented on a computer-readable medium. While aspects of embodiments of the disclosure have been illustrated or described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.

The present disclosure also provides at least one computer program product stored on a non-transitory computer readable storage medium. The computer program product comprises computer-executable instructions, such as program modules, included in a device executing on a physical or virtual processor of the target to perform any of the processes 400 to 500 described above with respect to fig. 4 to 5. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or divided between program modules as described. Computer-executable instructions for program modules may be executed within local or distributed devices. In a distributed facility, program modules may be located in both local and remote memory storage media.

Program code for implementing the methods of the present disclosure may be written in one or more programming languages. These computer program codes may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the computer or other programmable data processing apparatus, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. The program code may execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on a remote computer or entirely on the remote computer or server.

In the context of the present disclosure, computer program code or related data may be carried by any suitable carrier to enable an apparatus, device or processor to perform the various processes and operations described above. Examples of a carrier include a signal, computer readable medium, and the like.

The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of a machine-readable storage medium include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

Additionally, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking or parallel processing may be beneficial. Likewise, while the above discussion contains certain specific implementation details, this should not be construed as limiting the scope of any invention or claims, but rather as describing particular embodiments that may be directed to particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A method for transmitting data in a communication system, comprising:

generating a plurality of intermediate frequency signals associated with the data in a first frequency range;

converting the plurality of intermediate frequency signals in the first frequency range to a plurality of radio frequency signals in a second frequency range, the first frequency range being different from the second frequency range; and

transmitting the plurality of radio frequency signals via a plurality of channels, the plurality of channels having frequencies within the second frequency range, and the plurality of channels being allocated different frequency bandwidths.

2. The method of claim 1, wherein the number of the plurality of channels and the frequency bandwidth of each channel are configurable.

3. The method of claim 1, further comprising:

determining the number of the plurality of channels and a frequency bandwidth of each channel based on at least one of: the type of the data, the size of the data, and channel state information, CSI.

4. The method of claim 1, wherein a lower limit of the first frequency range is greater than zero and less than a lower limit of the second frequency range, an upper limit of the first frequency range being less than an upper limit of the second frequency range.

5. The method of claim 4, wherein the second frequency range is 223MHz to 235MHz and the frequency bandwidth of the first frequency range is 12 MHz.

6. The method of claim 1, wherein the frequency bandwidth of each of the plurality of channels is an integer multiple of 25 kHz.

7. The method of claim 1, wherein converting the plurality of intermediate frequency signals into the plurality of radio frequency signals comprises:

performing digital-to-analog conversion on the plurality of intermediate frequency signals to obtain a plurality of analog signals; and

converting the plurality of analog signals into the plurality of radio frequency signals.

8. The method of any of claims 1-7, wherein the communication system comprises an Internet of things communication system.

9. A method for receiving data in a communication system, comprising:

receiving a plurality of radio frequency signals associated with the data via a plurality of channels, the plurality of channels having frequencies within a second frequency range and the plurality of channels being allocated different frequency bandwidths;

converting the plurality of radio frequency signals to a plurality of intermediate frequency signals in a first frequency range, the first frequency range being different from the second frequency range; and

combining the plurality of intermediate frequency signals to obtain the data.

10. The method of claim 9, wherein the number of the plurality of channels and the frequency bandwidth of each channel are configurable.

11. The method of claim 9, further comprising:

12. The method of claim 9, wherein a lower limit of the first frequency range is greater than zero and less than a lower limit of the second frequency range, an upper limit of the first frequency range being less than an upper limit of the second frequency range.

13. The method of claim 12, wherein the second frequency range is 223MHz to 235MHz and the frequency bandwidth of the first frequency range is 12 MHz.

14. The method of claim 9, wherein the frequency bandwidth of each of the plurality of channels is an integer multiple of 25 kHz.

15. The method of claim 9, wherein converting the plurality of radio frequency signals into the plurality of intermediate frequency signals comprises:

performing analog-to-digital conversion on the plurality of radio frequency signals to obtain a plurality of digital signals; and

converting the plurality of digital signals into the plurality of intermediate frequency signals.

16. The method of any of claims 9 to 15, wherein the communication system comprises an internet of things communication system.

17. A communication device, comprising:

a processor; and

a memory coupled with the processor, the memory having instructions stored therein that, when executed by the processor, cause the network device to perform the method of any of claims 1-8.

18. A communication device, comprising:

a processor; and

a memory coupled with the processor, the memory having instructions stored therein that, when executed by the processor, cause the network device to perform the method of any of claims 9-16.

19. A computer-readable medium having stored thereon computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the method of any one of claims 1-8.

20. A computer-readable medium having stored thereon computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the method of any one of claims 9 to 16.