CN113785644A

CN113785644A - Information transmission method, related equipment and system

Info

Publication number: CN113785644A
Application number: CN201980096038.4A
Authority: CN
Inventors: 罗之虎; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2021-12-10
Anticipated expiration: 2039-05-27
Also published as: CN113785644B; WO2020237451A1

Abstract

The application discloses an information transmission method, related equipment and a system, wherein the method comprises the following steps: the method comprises the steps that a first communication device determines N frequency units, wherein the N frequency units adopt a frequency hopping mode, each frequency unit in the N frequency units comprises M carriers or M Resource Blocks (RB) or M subcarriers, N is a positive integer larger than 1, and M is a positive integer; the first communication equipment sends N pieces of configuration information to second communication equipment, wherein the N pieces of configuration information correspond to the N frequency units one by one, and the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information; the first communication device transmits data to the second communication device on the N frequency domain units. By implementing the embodiment of the invention, the time length of downlink transmission can be reduced, and the interference among cells can be further reduced.

Description

Information transmission method, related equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, a related device, and a system.

Background

The internet of things (IoT) is "internet of things connected. It expands the user end of Internet to any article for information exchange and communication. Such a communication method is also called Machine Type Communication (MTC), and a node to communicate is called an MTC terminal. Typical applications of the internet of things include smart grids, smart agriculture, smart transportation, smart home, environment detection and other aspects. Since the internet of things needs to be applied in various scenes such as from outdoor to indoor and from above ground to underground, many special requirements are put on the design of the internet of things.

Many MTC applications are used in poor coverage environments, such as electric meters and water meters, which are usually installed indoors or even in basements where wireless network signals are poor, and therefore coverage enhancement techniques are needed to solve the problem. At present, a main technical scheme of a narrowband band internet of things (NB-IoT) system downlink for coverage enhancement is repeated. By repeating the transmission, the receiving side combines and improves the signal-to-noise ratio. The downlink may support Frequency Division Multiplexing (FDM) except for a Narrowband Physical Downlink Control Channel (NPDCCH), and the Narrowband Physical Downlink Shared Channel (NPDSCH) may support Time Division Multiplexing (TDM) only.

The NB-IoT system bandwidth is 180kHz, the NPDSCH transmission occupies 180kHz, and the NPDCCH transmission occupies 90kHz or 180 kHz. As illustrated in the curve with an arrow between NPDCCH and NPDSCH in fig. 1, the NPDSCH indicated by the arrow is scheduled by the NPDCCH at the end without the arrow. As can be seen from fig. 1, NPDCCH or NPDSCH between different users, or NPDCCH and NPDSCH of the same user are TDM. As shown in fig. 1, the NPDCCH of UE1 and the NPDSCH of UE1 are TDM, the NPDCCH of UE1 and the NPDCCH of UE2 are TDM, and the NPDSCH of UE1 and the NPDSCH of UE2 are TDM.

In the prior art, NPDSCH only supports TDM, and for the same-frequency networking, when downlink transmission needs a large number of repetitions or takes a long time, inter-cell interference is relatively severe. Therefore, how to reduce the duration of downlink transmission and further reduce inter-cell interference is a technical problem to be solved at present.

Disclosure of Invention

The embodiment of the invention provides an information transmission method, related equipment and a system, which can reduce the time length of downlink transmission so as to reduce the inter-cell interference.

In a first aspect, an embodiment of the present invention provides an information transmission method, which is applied to a first communication device side. The method comprises the following steps: the first communication device determines N frequency units, the N frequency units employing a frequency hopping pattern, wherein each frequency unit comprises M carriers or M resource blocks, RBs, or M subcarriers, where N is a positive integer greater than 1 and M is a positive integer. And then, the first communication device sends N pieces of configuration information to the second communication device, wherein the N pieces of configuration information correspond to the N frequency units one by one, and the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information. Thereafter, the first communication device transmits data to the second communication device on the N frequency domain units.

By implementing the embodiment of the invention, the network equipment sends the configuration information of the plurality of frequency units to the terminal equipment, and the bandwidths, the frequency domain positions and the time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured and are not limited to narrow-band frequency hopping. The data sent to the terminal equipment by the network equipment is subjected to frequency hopping among the plurality of frequency units, the coverage performance can be improved by using the frequency diversity gain of the frequency hopping, the time duration of time domain transmission is reduced, and therefore the inter-cell interference is reduced.

In one possible design, the N frequency units satisfy at least one of: the deployment modes are the same; the number of antenna ports of the reference signals is the same; the starting symbol positions for data transmission within one subframe or within one slot or within the first slot of one subframe are the same. The deployment mode comprises an independent deployment mode, a guard band deployment mode or an in-band deployment mode. By implementing the embodiment of the invention, the constraint among a plurality of frequency units meets at least one of the following conditions: the same deployment mode is adopted, the number of antenna ports of the reference signals is the same, the starting symbol positions for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the number of REs which can be used for mapping data symbol resources on different frequency units can be ensured to be the same, when subframe level repetition is used on a plurality of frequency units or one transmission block needs to be mapped to a subframe on a plurality of frequency units, the same rate matching mode can be adopted, and the complexity of carrying out combined decoding by the terminal equipment is further reduced.

In one possible design, the number of Resource Elements (REs) available for transmitting data symbols in one subframe by a first frequency unit is greater than or equal to the number of REs available for transmitting data symbols in one subframe by a second frequency unit, and then the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped to data symbols with reference to the REs available for transmitting data symbols in one subframe by the first frequency unit, wherein the REs unavailable for transmitting data symbols in one subframe participate in counting but are not used for mapping of data symbols. By implementing the embodiment of the invention, the deployment modes of a plurality of frequency units, the number of antenna ports of reference signals on the frequency units, and the initial symbol positions of the frequency units for data transmission in one subframe, one time slot or the first time slot of the subframe are not restricted, so that the network deployment flexibility can be increased.

In one possible design, the number of REs available for the first frequency unit to transmit data symbols in one subframe is less than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and the positions and the number of REs available for the first frequency unit to transmit data symbols in one subframe are the same as the positions and the number of REs available for the second frequency unit to transmit data symbols in one subframe. By implementing the embodiment of the invention, the deployment modes of a plurality of frequency units, the number of antenna ports of reference signals on the frequency units, and the initial symbol positions of the frequency units for data transmission in one subframe, one time slot or the first time slot of the subframe are not restricted, so that the network deployment flexibility can be increased.

In one possible design, K consecutive subframes for transmitting the same data symbol are located in the same frequency bin, K being a positive integer. By implementing the embodiment of the invention, the deployment modes of a plurality of frequency units, the number of antenna ports of reference signals on the frequency units, and the initial symbol positions of the frequency units for data transmission in one subframe, one time slot or the first time slot of the subframe are not restricted, so that the network deployment flexibility can be increased.

In one possible design, the method further includes: the first communication device sends indication information to the second communication device, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.

In one possible design, the method further includes: the first communication device sends indication information to the second communication device, wherein the indication information is used for indicating the time domain frequency hopping interval of each frequency unit in the N frequency units.

In one possible design, any two of the N frequency bins are not adjacent in the frequency domain. By implementing the embodiment of the invention, the flexibility of the configuration of the frequency hopping mode can be increased.

In one possible design, any two of the N frequency bins are adjacent in the frequency domain. By implementing the embodiment of the invention, the flexibility of the configuration of the frequency hopping mode can be increased.

In one possible design, the time-domain hopping interval is an integer multiple of a subframe or an integer multiple of a slot or an integer multiple of a symbol. By implementing the embodiment of the invention, the flexibility of the configuration of the frequency hopping mode can be increased.

In one possible design, the time-domain hopping intervals of different ones of the N frequency bins are the same or different. The flexibility of the frequency hopping pattern configuration can be increased.

In one possible design, the bandwidths of different ones of the N frequency units may be the same or different. By implementing the embodiment of the invention, the flexibility of frequency hopping mode configuration can be increased, the compatibility with other communication systems can be increased, the protection bandwidth is reduced, and the utilization rate of frequency spectrum resources is improved.

In one possible design, the subcarrier spacing for different ones of the N frequency bins may be the same or different. By implementing the embodiment of the invention, the flexibility of frequency hopping mode configuration can be increased, the compatibility with other communication systems can be increased, the protection bandwidth is reduced, and the utilization rate of frequency spectrum resources is improved.

In a possible design, the first communication device is a network device, and the second communication device is a terminal device.

In a second aspect, an embodiment of the present invention provides an information transmission method, which is applied to a second communication device side. The method comprises the following steps: the second communication device receives N pieces of configuration information sent by the first communication device, the N pieces of configuration information correspond to N frequency units one by one, the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information, the N frequency units adopt a frequency hopping mode, each frequency unit in the N pieces of frequency units comprises M carriers or M Resource Blocks (RB) or M subcarriers, wherein N is a positive integer larger than 1, and M is a positive integer. And the second communication equipment determines the frequency domain positions of the N frequency domain units according to the N pieces of configuration information, and then receives the data sent by the first communication equipment from the N frequency units.

By implementing the embodiment of the invention, the terminal equipment receives the configuration information of the plurality of frequency units, and the bandwidths, the frequency domain positions and the time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured and are not limited to narrow-band frequency hopping. The data of the terminal equipment is subjected to frequency hopping among the plurality of frequency units, the coverage performance can be improved by using the frequency diversity gain of the frequency hopping, the time duration of time domain transmission is reduced, and therefore the inter-cell interference is reduced.

In one possible design, the number of REs available for transmitting data symbols by the first frequency unit in one subframe is greater than or equal to the number of REs available for transmitting data symbols by the second frequency unit in one subframe, and then the REs available for transmitting data symbols by the second frequency unit in one subframe are mapped to data symbols with reference to the REs available for transmitting data symbols by the first frequency unit in one subframe, wherein the REs unavailable for transmitting data symbols by the second frequency unit in one subframe participate in counting but are not used for mapping of data symbols. By implementing the embodiment of the invention, the deployment modes of a plurality of frequency units, the number of antenna ports of reference signals on the frequency units, and the initial symbol positions of the frequency units for data transmission in one subframe, one time slot or the first time slot of the subframe are not restricted, so that the network deployment flexibility can be increased.

In one possible design, the method further includes: and the second communication equipment receives indication information sent by the first communication equipment, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.

In one possible design, the method further includes: the second communication device receives indication information sent by the first communication device, wherein the indication information is used for indicating the time domain frequency hopping interval of each frequency unit in the N frequency units.

In one possible design, the time-domain hopping intervals of different ones of the N frequency bins are the same or different. By implementing the embodiment of the invention, more flexible configuration of the frequency hopping mode can be realized.

In a third aspect, an embodiment of the present invention provides a communication device, where the communication device is a first communication device, and the first communication device may include a plurality of functional modules or units, which are used to correspondingly execute the information transmission method provided in the first aspect, or the information transmission method provided in any one of possible implementations of the first aspect.

For example, the first communication device includes: a processing module and a transceiver module.

The processing module is used for determining N frequency units, wherein the N frequency units adopt a frequency hopping mode, each frequency unit in the N frequency units comprises M carriers or M Resource Blocks (RB) or M subcarriers, N is a positive integer larger than 1, and M is a positive integer;

the receiving and sending module is used for sending N pieces of configuration information to the second communication equipment, the N pieces of configuration information correspond to the N frequency units one by one, and the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information;

and the transceiving module is further used for sending data to the second communication device on the N frequency domain units.

Optionally, the transceiver module is further configured to: and sending indication information to the second communication equipment, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.

Optionally, the transceiver module is further configured to: and sending indication information to the second communication equipment, wherein the indication information is used for indicating the time domain frequency hopping interval of each frequency unit in the N frequency units.

In a fourth aspect, an embodiment of the present invention provides another communication device, where the communication device is a second communication device, and the second communication device may include a plurality of functional modules or units, which are used to correspondingly execute the information transmission method provided in the second aspect, or the information transmission method provided in any one of possible implementation manners of the second aspect.

For example, the second communication device includes: a receiving and sending module and a processing module.

The receiving and sending module is configured to receive N pieces of configuration information sent by the first communication device, where the N pieces of configuration information correspond to N frequency units one to one, the N pieces of configuration information respectively include frequency domain location information of the frequency units corresponding to the N pieces of configuration information, the N frequency units employ a frequency hopping mode, and each of the N frequency units includes M carriers or M resource blocks RB or M subcarriers, where N is a positive integer greater than 1, and M is a positive integer;

the processing module is used for determining the frequency domain positions of the N frequency domain units according to the N pieces of configuration information;

and the transceiving module is further used for receiving the data sent by the first communication equipment from the N frequency units.

Optionally, the transceiver module is further configured to: and receiving indication information sent by the first communication equipment, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.

Optionally, the transceiver module is further configured to: and receiving indication information sent by the first communication equipment, wherein the indication information is used for indicating the time domain frequency hopping interval of each frequency unit in the N frequency units.

In a fifth aspect, an embodiment of the present invention provides a communication device, configured to execute the information transmission method described in the first aspect. The communication device is a first communication device, and the first communication device may include: a memory, and a processor, transmitter, receiver coupled with the memory. Wherein the transmitter is configured to support the first communication device to perform the step of sending information by the first communication device in the information transmission method provided in the first aspect. The receiver is configured to support the first communication device to perform the step of receiving information by the first communication device in the information transmission method provided by the first aspect. Wherein the transmitter and the receiver may be integrated into a transceiver. The processor is configured to support the first communication device to perform other processing steps of the information transmission method provided by the first aspect, except that the first communication device sends and receives information. It should be noted that the transmitter and the receiver in the embodiment of the present invention may be integrated together, or may be coupled through a coupler. The memory is configured to store implementation codes of the information transmission method described in the first aspect, and the processor is configured to execute the program codes stored in the memory, that is, to execute the information transmission method provided in the first aspect, or the information transmission method provided in any one of the possible implementations of the first aspect.

In a sixth aspect, an embodiment of the present invention provides another communication device, configured to execute the information transmission method described in the second aspect. The communication device is a second communication device, and the second communication device may include: a memory, and a processor, transmitter, receiver coupled with the memory. Wherein the transmitter is configured to support the second communication device to perform the step of sending information by the second communication device in the information transmission method provided by the second aspect. The receiver is configured to support the second communication device to perform the step of receiving information by the second communication device in the information transmission method provided by the second aspect. Wherein the transmitter and the receiver may be integrated into a transceiver. The processor is configured to support the second communication device to perform other processing steps of the information transmission method provided by the second aspect, except that the second communication device sends and receives information. It should be noted that the transmitter and the receiver in the embodiment of the present invention may be integrated together, or may be coupled through a coupler. The memory is used for storing implementation codes of the information transmission method described in the second aspect, and the processor is used for executing the program codes stored in the memory, namely executing the information transmission method provided by the second aspect, or the information transmission method provided by any one of the possible implementation modes of the second aspect. The memory and the processor may be integrated together or may be coupled by a coupler.

In a seventh aspect, an embodiment of the present invention provides a communication system, which includes a first communication device and a second communication device. Wherein the first communication device may be the first communication device as described in the aforementioned third aspect or fifth aspect, and the second communication device may be the second communication device as described in the aforementioned fourth aspect or sixth aspect.

In an eighth aspect, the embodiment of the present invention provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to execute the information transmission method described in any one of the above aspects.

In a ninth aspect, embodiments of the present invention provide another computer program product containing instructions, which when run on a computer, causes the computer to perform the information transmission method described in any one of the above aspects.

In a tenth aspect, an embodiment of the present invention provides a communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. The processor may be configured to call the information transmission method provided in any of the above aspects from the memory, and execute the instructions included in the program. The interface may be used to output a processing result of the processor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

FIG. 1 is a schematic diagram of a data transmission;

fig. 2 is a schematic diagram of a wireless communication system according to an embodiment of the present invention;

FIG. 3 is a resource mapping pattern for three deployment modes provided by an embodiment of the present invention;

fig. 4 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a frequency hopping pattern provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of another frequency hopping pattern provided by an embodiment of the present invention;

fig. 7 is a resource mapping pattern according to an embodiment of the present invention;

fig. 8 is another resource mapping pattern provided by an embodiment of the present invention;

fig. 9 is a schematic logical structure diagram of a first communication device according to an embodiment of the present invention;

fig. 10 is a schematic logical structure diagram of a second communication device according to an embodiment of the present invention;

fig. 11 is a schematic hardware structure diagram of a network device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a communication chip according to an embodiment of the present invention.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

First, a communication system related to the present application will be described. Referring to fig. 2, fig. 2 illustrates a wireless communication system according to an embodiment of the present invention. The wireless communication system 100 may operate in a licensed frequency band and may also operate in an unlicensed frequency band. The wireless communication system 100 is not limited to a Long Term Evolution (LTE) system, but may be a future evolution 5G system, a New Radio (NR) system, or the like. It will be appreciated that the use of unlicensed frequency bands may increase the system capacity of the wireless communication system 100. As shown in fig. 2, the wireless communication system 100 includes: one or more network devices 101 and one or more terminal devices 102. Wherein:

network device 101 may communicate wirelessly 103 with terminal device 102 through one or more antennas. Each network device 101 may provide communication coverage for a respective coverage area 104. The coverage area 104 corresponding to the network device 101 may be divided into a plurality of sectors (sectors), wherein one sector corresponds to a portion of the coverage area (not shown).

In this embodiment, the network device 101 may include: evolved NodeB (eNB or eNodeB), or next-generation Node B (gNB), etc. The wireless communication system 100 may include several different types of network devices 101, such as macro base stations (macro base stations), micro base stations (micro base stations), and so on. Network device 101 may apply different radio technologies, such as a cell radio access technology, or a WLAN radio access technology.

In the embodiment of the present application, the terminal device 102 is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., aircraft, balloons, etc.). The terminal device 102 may be a machine type communication (eMTC) terminal, a mobile phone (mobile phone), a tablet computer (Pad), a portable computer, a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a smart car, a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. A terminal device may also be referred to as a User Equipment (UE), terminal (terminal), access terminal, UE unit, UE station, mobile device, mobile station (mobile station), mobile terminal, mobile client, mobile unit (mobile unit), remote station, remote terminal device, remote unit, wireless communication device, user agent, or user equipment, among others.

For example, the terminal device 102 may be an NB-IoT terminal, or an enhanced machine type communication (eMTC) terminal. To save power consumption and reduce cost, the operating bandwidth of the eMTC terminal may be generally smaller than that of the LTE system. For example, the operating bandwidth of an eMTC terminal may be a narrowband NB, where one NB includes 6 consecutive Physical Resource Blocks (PRBs), and one physical resource block PRB includes 12 subcarriers (subcarriers, SC). The terminal device 102 may also include a smart home device, and may also include a mobile terminal such as a mobile phone.

The terminal device 102 can communicate with other terminal devices in addition to the network device 101. For example, a mobile phone may communicate with a smart home device, an MTC device may communicate with another MTC device, and so on.

In the present application, the wireless communication system 100 may also be an IoT system, an NB-IoT system, an MTC system, an eMTC system, and other evolved systems (e.g., evolved enhanced MTC (fertc), evolved enhanced MTC (efmtc), or Additional MTC (AMTC)).

In this embodiment, the network device 101 may send a Reference Signal (RS) to the terminal device 102. Wherein RS may include, but is not limited to: a cell-specific reference signal (CRS) or a channel state information reference signal (CSI-RS).

For example, the first communication device mentioned in the following embodiments may be the network device 101 in the embodiment shown in fig. 2, and the second communication device may be the terminal device 102 in the embodiment shown in fig. 2.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

The following describes concepts of carriers, RBs, and subcarriers referred to in the present application. A carrier refers to a segment of contiguous resources in the frequency domain. Illustratively, the bandwidth of the carrier may be 180kHz, 200kHz, 360kHz, 720kHz, 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz, 100MHz, 200MHz, or 400 MHz. In LTE, one RB includes one subframe (e.g., 14 symbols (symbols)) in the time domain and 12 Subcarriers (SCs) in the frequency domain. In NR, one RB includes 12 subcarriers. For example, the bandwidth of one subcarrier is 15kHz and the bandwidth of one RB is 180kHz, or the bandwidth of one subcarrier is 30kHz and the bandwidth of one RB is 360 kHz.

The following is a description of the deployment modes referred to in this application.

Taking the NB-IoT system as an example, the NB-IoT supports three deployment modes of independent deployment (standby operation), guardband deployment (guard band operation), and in-band deployment (in-band operation). Wherein the content of the first and second substances,

independent deployment: the NB-IoT is transmitted using a separate frequency band, such as using one or more carriers of a GSM network.

And (3) deployment of a guard band: the NB-IoT is transmitted using one or more resource blocks of the E-UTRA carrier guard band that are not utilized, wherein one resource block has a bandwidth of 180 kHz.

In-band deployment: NB-IoT is transmitted using one or more resource blocks within one normal E-UTRA carrier, where one resource block has a bandwidth of 180 kHz.

The resource mapping patterns for the three deployment modes are described in conjunction with fig. 3. Referring to fig. 3, a schematic diagram of resource locations of three deployment mode reference signals in an RB (illustrated by 14 symbols in the time domain and 12 subcarriers in the frequency domain), and a white small square in fig. 3 represents a Resource Element (RE) available for data symbol mapping, or an RE available for resource mapping. For independent deployment and guard-band deployment modes, in the left example of fig. 3, the number of REs available for data symbol mapping in one RB in the frequency domain is 12 × 14-8 × 2 ═ 152 in one subframe in the time domain. For the in-band deployment mode, in the right example of fig. 3, the number of REs available for data symbol mapping in one RB in the frequency domain is at most 12 × 14-3 × 12-4 × 4-8 × 2 — 100 in one subframe in the time domain.

It should be noted that the above three deployment modes are only an example. The guard band deployment may be to utilize frequency resources that are not utilized in a guard band of an existing communication system, and the in-band deployment may be to utilize frequency resources in a carrier of the existing communication system, for example, resources occupying a part of a transmission bandwidth in the existing communication system. The existing system here may be NR or LTE or UMTS or GSM.

The main technical solution for coverage enhancement currently downstream by NB-IoT systems is duplication. The downlink can support FDM except NPDCCH, and NPDSCH only supports TDM. For same-frequency networking, or when downlink transmission needs a large number of repetitions or takes a long time, inter-cell interference is relatively severe. The method mainly provides a frequency hopping scheme, coverage performance can be improved through frequency diversity, downlink transmission time length is reduced, and meanwhile, a resource mapping method is provided for reducing complexity of merging and decoding of terminal equipment when frequency hopping occurs on carriers in different deployment modes.

Based on the foregoing wireless communication system 100, an embodiment of the present invention provides an information transmission method. Referring to fig. 4, the information transmission method includes, but is not limited to, the following steps:

s401: the first communication device determines N frequency units, wherein the N frequency units adopt a frequency hopping mode, each frequency unit comprises M carriers or M Resource Blocks (RB) or M subcarriers, N is a positive integer larger than 1, and M is a positive integer.

S402: the first communication device sends N pieces of configuration information to the second communication device, the second communication device receives the N pieces of configuration information sent by the first communication device, the N pieces of configuration information correspond to the N frequency units one by one, and the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information.

S403: and the second communication equipment determines the frequency domain positions of the N frequency domain units according to the N pieces of configuration information.

S404: the first communication device transmits data to the second communication device on the N frequency units, and the second communication device receives the data transmitted by the first communication device from the N frequency units.

Here, N may be a positive integer of 2 or more, such as 2, 3, 4, 5, or 6, for example.

Here, data is referred to generally and includes service data and/or signaling. The signaling may be downlink control signaling or uplink control signaling. For example, the data may include PDSCH, PDCCH, NPDSCH, NPDCCH, and the like.

In the embodiment of the present invention, the first communication device may be a network device (e.g., a base station), and the second communication device may be a terminal (e.g., an MTC terminal).

It should be noted that the N frequency units are used for transmitting data symbols to the second communication device. The number of N may be the same or different for different terminals. For example, for UE1, the number of frequency cells used to map data symbols is 2, and for UE2, the number of frequency cells used to map data symbols is 3.

Optionally, each frequency unit includes one or more continuous carriers, or includes one or more continuous (resource blocks, RBs), or includes one or more continuous subcarriers (subcarriers), or includes one or more continuous Narrow Bands (NBs), or includes one or more continuous sub-bands (subbands). For example, referring to fig. 5, the bandwidths of frequency element 0 and frequency element 1 are both 1 RB, the PDSCH of UE1 hops on frequency element 0 and frequency element 1, and the hopping sequence is: frequency bin 0, frequency bin 1. The PDSCH of UE2 is also hopped on frequency element 0 and frequency element 1 in the following order: frequency unit 1, frequency unit 0.

Regarding the frequency domain hopping pattern, starting from the frequency unit of the initial hopping, how to hop may be according to a preset sequence, for example, it may be agreed to hop according to the configured index sequence of the frequency unit from the frequency unit of the initial hopping, or hop according to the sequence configured in the configuration information. For example, the configuration information needs to include a frequency domain hopping sequence in addition to the frequency domain location information of the frequency cell corresponding to the configuration information, so as to indicate the hopping sequence of the N frequency cells, as shown in fig. 5, the network device sends two pieces of configuration information to the UE1, where one piece of configuration information includes the frequency domain location information of frequency cell 0, and the other piece of configuration information includes the frequency domain location information of frequency cell 1, and one or two pieces of configuration information of the two pieces of configuration information further include the hopping sequence of the UE1, and the hopping sequence is: frequency bin 0, frequency bin 1. The network device sends two pieces of configuration information to the UE2, where one piece of configuration information includes frequency domain location information of frequency unit 0, the other piece of configuration information includes frequency domain location information of frequency unit 1, and one or two pieces of configuration information of the two pieces of configuration information further include a frequency hopping sequence of the UE2, and the frequency hopping sequence is: frequency unit 1, frequency unit 0.

Optionally, bandwidths of different frequency units in the N frequency units may be the same or different, and this is not limited in this application. As shown in fig. 5, taking the same bandwidth of each frequency unit as an example, frequency unit 0 and frequency unit 1 both include 1 RB, and the bandwidth is 180 kHz. Alternatively, frequency unit 0 and frequency unit 1 each include 1 RB, and the bandwidth of frequency unit 0 is 180kHz and the bandwidth of frequency unit 1 is 360 kHz.

Optionally, the subcarrier intervals of different frequency units in the N frequency units may be the same or different, which is not limited in this application. As shown in fig. 5, taking the same subcarrier spacing for each frequency unit as an example, frequency unit 0 and frequency unit 1 each include 1 RB, and the subcarrier spacing is 15 kHz. Alternatively, frequency unit 0 and frequency unit 1 each include 1 RB, and the subcarrier spacing for frequency unit 0 is 15kHz and the subcarrier spacing for frequency unit 1 is 30 kHz.

Optionally, the N frequency units occupy discontinuous frequency domain resources, that is, the N frequency units are not adjacent to each other in the frequency domain, that is, any two frequency units in the N frequency units are not adjacent to each other in the frequency domain. Any two of the N frequency bins may be separated by several subcarriers, or several RBs, or several carriers in the frequency domain. For example, in fig. 5, frequency unit 0 and frequency unit 1 are not adjacent in the frequency domain, and frequency unit 0 and frequency unit 1 are spaced 1 RB apart.

Optionally, the N frequency units occupy continuous frequency domain resources, that is, the N frequency units are adjacent to each other in the frequency domain. For example, in fig. 5, frequency bin 0 and frequency bin 1 are adjacent in the frequency domain. Of course, the N frequency units may be partially adjacent to each other in the frequency domain, and the portions are not adjacent to each other, which is not limited in the present application.

Optionally, the first communication device may further send indication information to the second communication device, where the indication information is used to indicate the time domain hopping interval of the N frequency units. The meaning of the time domain frequency hopping interval may be a duration in which no frequency hopping occurs in the time domain, or a duration of an interval between two adjacent frequency hopping in the time domain. For example, only one common time-domain hopping interval may be configured, the time-domain hopping intervals of N frequency units all being equal to the common time-domain hopping interval. The indication information and the N configuration information may be sent to the terminal through the same message, or may be sent to the terminal through different messages. For example, the information may be carried in a System Information Block (SIB), a Radio Resource Control (RRC) message, a media access control element (MAC CE) message, or Downlink Control Information (DCI). For example, the indication information and the N pieces of configuration information may be sent to the UE through a system message or an RRC message, or the N pieces of configuration information may be sent to the UE through a system message or an RRC message, and the indication information may be sent to the UE through DCI. Of course, the time domain frequency hopping interval may also be predefined in the protocol, and the network device is not required to send the time domain frequency hopping intervals of the N frequency units to the terminal, thereby saving signaling overhead. In this case, the time-domain hopping intervals of the respective frequency cells are the same.

Optionally, the time-domain frequency hopping interval may be an integer multiple of a subframe, or an integer multiple of a time slot, or an integer multiple of a symbol. The time domain hopping interval may be an integer multiple of a subframe.

Optionally, the time domain frequency hopping intervals of different frequency units in the N frequency units may be the same or different, and this is not limited in this application. As shown in fig. 5, for example, the time-domain hopping intervals of the frequency units are the same, each of the frequency unit 0 and the frequency unit 1 includes 1 RB, and each of the time-domain hopping intervals is 1 subframe. Or, both frequency unit 0 and frequency unit 1 include 1 RB, and the time-domain hopping interval of frequency unit 0 is 1 subframe, and the time-domain hopping interval of frequency unit 1 is 2 subframes.

Optionally, the first communication device may further send, to the second communication device, indication information, where the indication information is used to indicate a time domain frequency hopping interval of each of the N frequency units. For example, the time domain frequency hopping interval of each of the N frequency units may be configured independently, for example, each of the N frequency units corresponds to one time domain frequency hopping interval, that is, N time domain frequency hopping intervals need to be configured altogether.

The start time of the frequency hopping by the N frequency units may be frame 0 or subframe 0. The starting position of the time domain frequency hopping can be predefined by a protocol, and the network device does not need to send the starting position of the time domain frequency hopping to the terminal.

Referring to fig. 6, if the UE2 receives the time domain hopping interval sent by the network device at time t1, the UE2 calculates the hopping position according to the position of the current subframe and the time domain hopping interval, receives data on frequency unit 1 from time t1 to time t2, performs frequency hopping at time t2, switches to receiving data from frequency unit 0, and so on.

The frequency domain position information of the frequency unit may include an absolute frequency point number of the frequency unit, or the absolute frequency point number + offset information of the frequency unit, or a start frequency point + an end frequency point of the frequency unit, or the start frequency point + a bandwidth of the frequency unit, or the end frequency point + a bandwidth of the frequency unit. As shown in fig. 5, the bandwidth of frequency unit 0 is 1 RB, the frequency domain position of frequency unit 0 is RB0, the bandwidth of frequency unit 1 is 1 RB, and the frequency domain position of frequency unit 1 is RB2, then the 2 pieces of configuration information sent by the network device to UE1 respectively include index numbers or absolute frequency point numbers of RB0 and RB2, so as to indicate the frequency domain resources occupied by PDSCH frequency hopping of UE 1.

Optionally, each of the N pieces of configuration information may further include at least one of the following information: deployment mode, number of antenna ports, mapping position of reference signals, number of mapping REs of reference signals, type of reference signals, valid subframe configuration, and downlink gap (DL gap) configuration. The terminal device may determine the mapping pattern according to the configuration information, and may further receive the data symbol from the RE used for mapping the data symbol in the N frequency units.

By implementing the method embodiment shown in fig. 4, the network device sends configuration information of multiple frequency units to the terminal device, and the bandwidths, frequency domain positions, and time domain hopping intervals of the multiple frequency units can all be flexibly configured, and are not limited to narrowband hopping and not limited to system bandwidth. The data of the terminal equipment is subjected to frequency hopping among the plurality of frequency units, the coverage performance can be improved by using the frequency diversity gain of the frequency hopping, the time duration of time domain transmission is reduced, and therefore the inter-cell interference is reduced.

In a first embodiment, the N frequency units satisfy at least one of the following conditions: the deployment modes are the same; the number of antenna ports of the reference signals is the same; the starting symbol positions for data transmission in one subframe or one slot or the first slot of one subframe are the same. The deployment mode comprises an independent deployment mode, a guard band deployment mode or an in-band deployment mode. This is to ensure that the data symbol mapping patterns of the N frequency units are the same.

In the above embodiment, the constraint between the plurality of frequency units satisfies at least one of: the same deployment mode is adopted, the number of antenna ports of the reference signals is the same, the starting symbol positions for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the number of REs which can be used for mapping data symbol resources on different frequency units can be ensured to be the same, when subframe level repetition is used on a plurality of frequency units or one transmission block needs to be mapped to subframes on a plurality of frequency units, the same rate matching mode can be adopted, and the complexity of carrying out merging and decoding by the terminal equipment is further reduced. The advantage of subframe level repetition is that complex symbols can be directly combined to improve performance, and in addition, symbols transmitted on two subframes are completely the same, so that the precision of frequency offset estimation can be improved through differential operation.

The reference signal may include a demodulation reference signal (DMRS) for a data channel, a demodulation reference signal (dm RS) for a control channel, a Positioning Reference Signal (PRS), a channel state information reference signal (CSI-RS), a Wake Up Signal (WUS), a phase-tracking reference signal (PTRS), a cell-specific reference signal (CRS), a Narrowband Reference Signal (NRS), a narrowband positioning reference signal (PTRS), a Narrowband Wake Up Signal (NWUS), or an MTC wake up signal (MTC MWUS).

By implementing the first embodiment of the invention, the terminal device receives the configuration information of the plurality of frequency units, and the bandwidths, the frequency domain positions and the time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured. The data of the terminal equipment is subjected to frequency hopping among the plurality of frequency units, the coverage performance can be improved by using the frequency diversity gain of the frequency hopping, the time duration of time domain transmission is reduced, and therefore the inter-cell interference is reduced. The constraint between the plurality of frequency units satisfies at least one of: the same deployment mode is adopted, the number of antenna ports of the reference signals is the same, the starting symbol positions for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the number of REs which can be used for mapping data symbol resources on different frequency units can be ensured to be the same, when subframe level repetition is used on a plurality of frequency units or one transmission block needs to be mapped to subframes on a plurality of frequency units, the same rate matching mode can be adopted, and the complexity of carrying out merging and decoding by the terminal equipment is further reduced.

In a second embodiment, the deployment patterns of the N frequency units may be different, or the number of antenna ports of the reference signal on the N frequency units may be different, or the starting symbol positions of the N frequency units for data transmission in one subframe or one slot or the first slot of one subframe may be different. This approach may be deployed between multiple different systems for network deployment, and is more flexible, but the number of REs available for data symbol resource mapping on different frequency units may be different, and when subframe-level repetition is used on multiple frequency units or one transport block needs to be mapped to a subframe on multiple frequency units, the terminal device needs to use different rate matching approaches, which may increase complexity of merging and decoding by the terminal device. In order to solve the problem of reducing the complexity of merging and decoding at the receiving end, the embodiments of the present invention provide the following three solutions.

The first method is as follows: the frequency unit with a larger number of available REs (REs available for mapping data symbols) in one subframe may be used as a reference, and the frequency unit with a smaller number of REs may use the data symbols mapped at the REs that are not available for data symbol transmission in the frequency unit. Here, the future means being calculated but not used in the mapping. As shown in fig. 7, the number of available REs in frequency element 0 is greater than the number of available REs in frequency element 1, and then frequency element 1 performs data symbol mapping according to the pattern of available REs in frequency element 0 with respect to frequency element 0. The numbers of available REs in one subframe are shown in fig. 7, and it can be seen that in this way, frequency unit 0 and frequency unit 1 facilitate subframe-level repetition, and the receiving end can perform combined reception on the same index portions of REs on frequency unit 0 and frequency unit 1.

The second method comprises the following steps: the frequency unit with a smaller number of available REs (REs available for mapping data symbols) in one subframe may be used as a reference, and different frequency units may perform resource mapping according to the reference. As shown in fig. 8, if the number of available REs in frequency unit 1 is smaller than that in frequency unit 0, then frequency unit 0 is mapped according to the pattern of available REs in frequency unit 1 with reference to frequency unit 1, and the positions and the number of REs available for transmitting data symbols in one subframe of frequency unit 0 are the same as the positions and the number of REs available for transmitting data symbols in one subframe of frequency unit 1. It can be seen that the number of REs actually used for data symbol mapping in frequency unit 0 is reduced in the second scheme compared to the first scheme. In fig. 8, the numbers of available REs in a subframe are shown, and it can be seen that in this way, frequency unit 0 and frequency unit 1 are convenient for subframe-level repetition, and the indexes of REs on frequency unit 0 and frequency unit 1 are identical, so that the receiving end can perform combined reception on the parts with the same indexes of REs on frequency unit 0 and frequency unit 1.

The third method comprises the following steps: to ensure that subframe-level repetition is done on one frequency unit, consecutive K subframes for transmitting the same data symbol may be mapped on the same frequency unit. For example, when the subframe level repetition needs to cross the frequency unit, the time domain frequency hopping interval can be extended to ensure that the K consecutive subframes for transmitting the same data symbol are mapped on the same frequency unit, so that the receiving end can perform the combined reception of the same data symbol transmitted by at least two subframes on the same frequency unit. In this case, the network device may notify the terminal of the offset information to indicate the extended time domain hopping interval.

By implementing the second embodiment of the invention, the terminal equipment receives the configuration information of the plurality of frequency units, and the bandwidths, the frequency domain positions and the time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured. The data of the terminal equipment is subjected to frequency hopping among the plurality of frequency units, the coverage performance can be improved by using the frequency diversity gain of the frequency hopping, the time duration of time domain transmission is reduced, and therefore the inter-cell interference is reduced. For the deployment mode of multiple frequency units, the number of antenna ports of reference signals on the multiple frequency units, and the initial symbol positions of the multiple frequency units for data transmission in one subframe or one time slot or the first time slot of one subframe, there is no constraint, so that the network deployment flexibility can be increased, and the subframe level repetition complexity and the terminal device merging and decoding complexity are reduced by the constraint of a resource mapping mode or a time domain frequency hopping interval.

It should be noted that the "subframe" mentioned in the above embodiments may be a valid subframe. The definition of a valid subframe is related to the particular communication system.

Taking NB-IoT systems as an example, a valid subframe may be referred to as an NB-IoT downlink subframe (NB-IoT DL subframe). In the following scenario, a terminal device in an NB-IoT system should assume one subframe as an NB-IoT downlink subframe:

for example, the terminal device determines that a subframe including no Narrowband Primary Synchronization Signal (NPSS), or Narrowband Secondary Synchronization Signal (NSSS), or Narrowband Physical Broadcast Channel (NPBCH), or NB system information block type (systeminformationblock 1-NB) transmission is an NB-IoT downlink subframe.

Or the terminal equipment receives configuration parameters, and the configuration parameters are used for configuring NB-IoT downlink subframes. Further, the terminal device may determine the NB-IoT downlink subframe according to the configuration parameter. The configuration parameter may be configured through a system message or RRC signaling, which is not specifically limited in this embodiment of the present application.

Taking the eMTC system as an example, the valid subframe may be referred to as a bandwidth-reduced Low-complexity or coverage enhanced (BL/CE) downlink subframe. The BL/CE downlink subframe may be configured through a configuration parameter, and the configuration parameter is configured through a system message or an RRC signaling.

The above description mainly introduces the scheme provided by the embodiment of the present application from the perspective of interaction between various devices. It is to be understood that each network element, for example, a terminal device, a network device, etc., includes a hardware structure and/or a software module for performing each function in order to implement the functions described above. Those of skill in the art would readily appreciate that the present application is capable of being implemented as hardware or a combination of hardware and computer software for performing the exemplary network elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is to be understood that, in the above methods, the method implemented by the network device (the above first communication device) may also be implemented by a component (e.g., a chip or a circuit) configurable in the network device, and the method implemented by the terminal device (the above second communication device) may also be implemented by a component (e.g., a chip or a circuit) configurable in the terminal device.

In the embodiment of the present application, the terminal device, the network device, and the like may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 9 shows a schematic diagram of a possible logical structure of the first communication device involved in the foregoing embodiments, and the first communication device 900 is configured to execute the process corresponding to the first communication device in the foregoing method embodiments. The first communication device 900 includes: a processing module 901 and a transceiver module 902. Illustratively, the transceiver module 902 is configured to support the first communication device 900 to perform the steps of receiving or sending information by the first communication device in the foregoing embodiment of the method shown in fig. 4. A processing module 901, configured to support the first communication device 900 to perform the processing steps related to the first communication device 900 in the foregoing method embodiment shown in fig. 4, for example, to implement other functions besides the transceiver unit function. Optionally, the first communication device 900 may further include a storage module for storing codes (programs) or data. In a possible manner, the processing module 901 may call the code or data of the storage module, so that the first communication device 900 implements determining N frequency units, where the N frequency units employ a frequency hopping mode, and each frequency unit of the N frequency units includes M carriers or M resource blocks RB or M subcarriers, where N is a positive integer greater than 1, and M is a positive integer.

In a hardware implementation, the processing module 901 may be a processor or a processing circuit. The transceiver module 902 may be a transceiver or a transceiver circuit or an interface circuit, etc. The storage module may be a memory. The processing module, the transceiver module and the storage module can be integrated together or separated.

Fig. 10 is a schematic diagram showing a possible logical structure of the second communication device according to the foregoing embodiments, where the second communication device is configured to execute a process corresponding to the second communication device in the foregoing method embodiments. The second communication device 1000 includes: a transceiver module 1001 and a processing module 1002. Illustratively, the transceiver module 1001 is configured to support the second communication device 1000 to perform the steps of receiving or sending information corresponding to the second communication device in the foregoing method embodiment shown in fig. 4. A processing module 1002, configured to support the second communication device to perform the processing steps related to the second communication device in the foregoing embodiment of the method shown in fig. 4, for example, to implement other functions besides the functions of the transceiver unit, and the like. Optionally, the second communication device 1000 may further include a storage module for storing codes (programs) or data. In a possible manner, the processing module 1002 may call the code or data of the storage module, so that the second communication device 1000 implements determining the frequency domain positions of the N frequency domain units according to the N configuration information, where N is a positive integer greater than 1.

In a hardware implementation, the processing module 1002 may be a processor or a processing circuit. The transceiver module 1001 may be a transceiver or a transceiver circuit or an interface circuit. The storage unit may be a memory. The processing module, the transceiver module and the storage module can be integrated together or separated.

Fig. 11 is a schematic diagram of a possible hardware structure of a network device according to the foregoing embodiments, provided for an embodiment of the present application. The network device may be the first communication device described above. The network device is configured to execute the process corresponding to the first communication device in the foregoing method embodiments. As shown in fig. 11, the network device 1100 may include: one or more processors 1101, memory 1102, network interface 1103, transceiver 1105, and antenna 1108. These components may be connected by a bus 1104 or otherwise, as illustrated in FIG. 11 by a bus. Wherein:

network interface 1103 may be used for network device 1100 to communicate with other communication devices, such as other network devices. In particular, the network interface 1103 may be a wired interface.

The transceiver 1105 may be used for transmit processing, e.g., signal modulation, of signals output by the processor 1101. The transceiver 1105 may also be used for receive processing of mobile communication signals received by the antenna 1108. Such as signal demodulation. In some embodiments of the present application, the transceiver 1105 may be considered a wireless modem. In the network device 1100, the number of transceivers 1105 may be one or more. The antenna 1108 may be used to convert electromagnetic energy in transmission line to electromagnetic wave in free space or vice versa.

The memory 1102 may be coupled to the processor 1101 via the bus 1104 or an input-output port, and the memory 1102 may be integrated with the processor 1101. The memory 1102 is used to store various software programs and/or sets of instructions or data. In particular, the memory 1102 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 1102 may store an operating system (hereinafter, referred to as a system), such as an embedded operating system like uCOS, VxWorks, RTLinux, etc. The memory 1102 may also store network communication programs that may be used to communicate with one or more additional devices, one or more terminal devices, and one or more network devices.

The processor 1101 may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of certain functions, including for example one or more microprocessors, a combination of digital signal processors and microprocessors, or the like.

In an embodiment of the present application, the processor 1101 may be configured to read and execute computer readable instructions. Specifically, the processor 1101 may be configured to call a program stored in the memory 1102, for example, a program for implementing the information transmission method provided in one or more embodiments of the present application on the network device 1100 side, and execute instructions included in the program.

It is understood that the network device 1100 may be the network device 111 in the wireless communication system 110 shown in fig. 2, and may be implemented as a base transceiver station, a wireless transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a NodeB, an eNodeB, a gNB, and so on.

It should be noted that the network device 1100 shown in fig. 11 is only one implementation manner of the embodiment of the present application, and in practical applications, the network device 1100 may also include more or less components, which is not limited herein. For specific implementation of the network device 1100, reference may be made to the description related to the foregoing method embodiment, and details are not repeated here.

As shown in fig. 12, a schematic diagram of a possible hardware structure of the terminal device according to the foregoing embodiment is provided for the embodiment of the present application, and the terminal device may be the second communication device. The terminal device is configured to execute a process corresponding to the second communication device in the foregoing method embodiments. As shown in fig. 12, the terminal device 120 may include: an input-output module (e.g., an audio input-output module 125, a key input module 126, a display 127, etc.), a user interface 128, one or more processors 121, a transceiver 122, an antenna 123, and a memory 124. These components may be connected by a bus or other means, with fig. 12 illustrating the connection by a bus as an example. Wherein:

the antenna 123 may be used to convert electromagnetic energy into electromagnetic waves in free space or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. The transceiver 122 may be configured to perform a transmission process on the signal output by the processor 121, and may also be configured to perform a reception process on the mobile communication signal received by the antenna 123. In the present embodiment, the transceiver 122 may be considered a wireless modem. In the terminal device 120, the number of the transceivers 122 may be one or more.

In addition to the transceiver 122 shown in fig. 12, the terminal device 120 may also include other communication components, such as a GPS module, a Bluetooth (Bluetooth) module, a wireless fidelity (Wi-Fi) module, and so forth. Not limited to the above-stated wireless communication signals, the terminal device 120 may also support other wireless communication signals, such as satellite signals, short-wave signals, and so forth. Not limited to wireless communication, the terminal device 120 may also be configured with a wired network interface (such as a LAN interface) to support wired communication.

The input and output module may be used to enable interaction between the terminal device 120 and a user/external environment, and may mainly include an audio input and output module 125, a key input module 126, a display 127, and the like. Specifically, the input/output module may further include: cameras, touch screens, sensors, and the like. Wherein the input output modules are in communication with the processor 121 via the user interface 128.

The memory 124 may be coupled to the processor 121 via a bus or an input-output port, and the memory 124 may be integrated with the processor 121. The memory 124 is used to store various software programs and/or sets of instructions. In particular, memory 124 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 124 may store an operating system (hereinafter referred to simply as a system), such as an embedded operating system like ANDROID, IOS, WINDOWS, or LINUX. Memory 124 may also store network communication programs that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices. The memory 124 may also store a user interface program, which may vividly display the content of the application program through a graphical operation interface, and receive the control operation of the application program from the user through input controls such as menus, dialog boxes, and buttons.

In the embodiment of the present application, the memory 124 may be used to store an implementation program of the information transmission method provided in one or more embodiments of the present application on the terminal device 120 side. With regard to the implementation of the information transmission method provided in one or more embodiments of the present application, please refer to the foregoing embodiments.

Processor 121 may be used to read and execute computer readable instructions. Specifically, the processor 121 may be configured to call a program stored in the memory 124, for example, an implementation program of the information transmission method provided in one or more embodiments of the present application on the terminal device 120 side, and execute instructions included in the program to implement the information transmission method related to the previous embodiment. The processor 121 may support: one or more of global system for mobile communication (GSM) (2G) communication, Wideband Code Division Multiple Access (WCDMA) (3G) communication, and Long Term Evolution (LTE) (4G) communication, and 5G communication, among others. Optionally, when the processor 121 sends any message or data, it sends it specifically by driving or controlling the transceiver 122. Optionally, when the processor 121 receives any message or data, it specifically drives or controls the transceiver 122 to do so. Thus, the processor 121 may be considered a control center that performs transmission or reception, and the transceiver 122 is a specific executor of transmission and reception operations.

It is to be appreciated that the terminal device 120 may be the terminal device 102 in the wireless communication system 100 shown in fig. 2, and may be implemented as an eMTC device, a mobile station (mobile station), a mobile unit (mobile unit), a wireless unit, a remote unit, a user agent, a mobile client, and so on.

It should be noted that the terminal device 120 shown in fig. 12 is only one implementation manner of the embodiment of the present application, and in practical applications, the terminal device 120 may further include more or less components, which is not limited herein. For specific implementation of the terminal device 120, reference may be made to the related description in the foregoing method embodiment, and details are not described here again.

Referring to fig. 13, fig. 13 shows a schematic structural diagram of a communication chip provided in the present application. As shown in fig. 13, the communication chip 1300 may include: a processor 1301, and one or more interfaces 1302 coupled to the processor 1301. The following are exemplary:

processor 1301 may be used to read and execute computer readable instructions. In particular, processor 1301 may include a controller, an operator, and a register. Illustratively, the controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for executing fixed-point or floating-point arithmetic operation, shift operation, logic operation and the like, and can also execute address operation and conversion. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor 1301 may be an Application Specific Integrated Circuit (ASIC) architecture, a microprocessor without interlocked pipeline stage architecture (MIPS) architecture, an advanced reduced instruction set machine (ARM) architecture, or an NP architecture. Processor 1301 may be single core or multicore.

Illustratively, the interface 1302 may be used to input data to be processed to the processor 1301, and may output a processing result of the processor 1301 to the outside. In a specific implementation, the interface 1302 may be a general purpose input/output (GPIO) interface, and may be connected to a plurality of peripheral devices (e.g., a display (LCD), a camera (camara), a Radio Frequency (RF) module, etc.). The interface 1302 is connected to the processor 1301 via a bus 1303.

In a possible implementation manner, the processor 1301 may be configured to call, from the memory, an implementation program or data of the information transmission method provided in one or more embodiments of the present application on a network device or a terminal device side, so that the chip may implement the information transmission method shown in fig. 4. The memory may be integrated with the processor 1301 or coupled to the communication chip 130 via the interface 1302, i.e. the memory may be a part of the communication chip 130 or may be independent of the communication chip 130. The interface 1302 may be used to output the results of the execution by the processor 1301. In this application, the interface 1302 may be specifically configured to output the decoding result of the processor 1301. For the information transmission method provided in one or more embodiments of the present application, reference may be made to the foregoing embodiments, which are not described herein again.

It should be noted that the functions corresponding to the processor 1301 and the interface 1302 may be implemented by hardware design, software design, or a combination of hardware and software, which is not limited herein.

In another embodiment of the present application, a computer storage medium is further provided, where a computer executing instruction is stored in the computer storage medium, and when a device (which may be a single chip, a chip, or the like) or a processor may call the computer executing instruction stored in the readable storage medium, the device or the processor may execute the steps of the terminal device or the network device in the information transmission method provided in fig. 4. The aforementioned computer storage media may comprise: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

In another embodiment of the present application, there is also provided a computer program product comprising computer executable instructions stored in a computer readable storage medium; the computer executable instructions may be read by at least one processor of the device from a computer readable storage medium, and execution of the computer executable instructions by the at least one processor causes the device to perform the steps of the terminal device or the network device in the information transmission method provided in fig. 4.

In another embodiment of the present application, there is also provided a communication system including a plurality of devices including a terminal device and a network device. Illustratively, the network device may be the first communication device shown in fig. 9 or the network device provided in fig. 11, and is configured to execute the steps corresponding to the first communication device in the information transmission method provided in fig. 4. And/or the terminal device may be the second communication device shown in fig. 10 or the terminal device provided in fig. 12, and is configured to execute the step corresponding to the second communication device in the information transmission method provided in fig. 4.

Finally, it should be noted that: the above is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

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

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

An information transmission method, comprising:

the method comprises the steps that a first communication device determines N frequency units, wherein the N frequency units adopt a frequency hopping mode, each frequency unit in the N frequency units comprises M carriers or M Resource Blocks (RB) or M subcarriers, N is a positive integer larger than 1, and M is a positive integer;

the first communication equipment sends N pieces of configuration information to second communication equipment, wherein the N pieces of configuration information correspond to the N frequency units one by one, and the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information;

the first communication device transmits data to the second communication device on the N frequency domain units.
The method of claim 1, wherein the N frequency units satisfy at least one of:

the deployment modes are the same, and comprise an independent deployment mode, a guard band deployment mode or an in-band deployment mode;

the number of antenna ports of the reference signals is the same;

the starting symbol positions for data transmission within one subframe or within one slot or within the first slot of one subframe are the same.
The method of claim 1, wherein the number of Resource Elements (REs) that can be used by the first frequency unit for transmitting data symbols in one subframe is greater than or equal to the number of REs that can be used by the second frequency unit for transmitting data symbols in one subframe, and then the REs that can be used by the second frequency unit for transmitting data symbols in one subframe are mapped to data symbols based on the REs that can be used by the first frequency unit for transmitting data symbols in one subframe, wherein the REs that can not be used by the second frequency unit for transmitting data symbols in one subframe participate in counting but are not used for mapping of data symbols.
The method of claim 1, wherein the number of REs available for the first frequency unit to transmit data symbols in one subframe is less than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and wherein the positions and the number of REs available for the first frequency unit to transmit data symbols in one subframe are the same as the positions and the number of REs available for the second frequency unit to transmit data symbols in one subframe.
The method of claim 1, wherein K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, K being a positive integer.
The method of any of claims 1 to 5, further comprising:

and the first communication equipment sends indication information to the second communication equipment, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.
An information transmission method, comprising:

the method comprises the steps that a second communication device receives N pieces of configuration information sent by a first communication device, the N pieces of configuration information correspond to N frequency units one by one, the N pieces of configuration information respectively comprise frequency domain position information of the frequency units corresponding to the N pieces of configuration information, the N pieces of frequency units adopt a frequency hopping mode, each frequency unit in the N pieces of frequency units comprises M carriers or M Resource Blocks (RB) or M subcarriers, wherein N is a positive integer larger than 1, and M is a positive integer;

the second communication device determines the frequency domain positions of the N frequency domain units according to the N pieces of configuration information;

and the second communication equipment receives the data transmitted by the first communication equipment from the N frequency units.
The method of claim 7, wherein the N frequency units satisfy at least one of:

the deployment modes are the same, and comprise an independent deployment mode, a guard band deployment mode or an in-band deployment mode;

the number of antenna ports of the reference signals is the same;

the starting symbol positions for data transmission within one subframe or within one slot or within the first slot of one subframe are the same.
The method of claim 7, wherein the number of REs available for the first frequency unit to transmit data symbols in one subframe is greater than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and then the REs available for the second frequency unit to transmit data symbols in one subframe are mapped to data symbols based on the REs available for the first frequency unit to transmit data symbols in one subframe, wherein the REs unavailable for the second frequency unit to transmit data symbols in one subframe participate in counting but are not used for mapping of data symbols.
The method of claim 7, wherein the number of REs available for the first frequency unit to transmit data symbols in one subframe is less than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and wherein the positions and the number of REs available for the first frequency unit to transmit data symbols in one subframe are the same as the positions and the number of REs available for the second frequency unit to transmit data symbols in one subframe.
The method of claim 7, wherein K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, K being a positive integer.
The method according to any one of claims 7 to 11, further comprising:

and the second communication equipment receives indication information sent by the first communication equipment, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.
A communication device, comprising:

a processing module, configured to determine N frequency units, where the N frequency units adopt a frequency hopping mode, and each of the N frequency units includes M carriers or M resource blocks RB or M subcarriers, where N is a positive integer greater than 1 and M is a positive integer;

a transceiver module, configured to send N pieces of configuration information to a second communications device, where the N pieces of configuration information correspond to the N frequency units one to one, and the N pieces of configuration information respectively include frequency domain location information of the frequency units corresponding to the N pieces of configuration information;

the transceiver module is further configured to send data to the second communication device on the N frequency domain units.
The communications device of claim 13, wherein the N frequency units satisfy at least one of:

the deployment modes are the same, and comprise an independent deployment mode, a guard band deployment mode or an in-band deployment mode;

the number of antenna ports of the reference signals is the same;

the starting symbol positions for data transmission within one subframe or within one slot or within the first slot of one subframe are the same.
The communications device of claim 13, wherein the number of REs available for transmission of data symbols by the first frequency unit in a subframe is greater than or equal to the number of REs available for transmission of data symbols by the second frequency unit in a subframe, and then REs available for transmission of data symbols by the second frequency unit in a subframe are mapped to data symbols with reference to REs available for transmission of data symbols by the first frequency unit in a subframe, wherein REs unavailable for transmission of data symbols by the second frequency unit in a subframe participate in counting but are not used for mapping of data symbols.
The communications device of claim 13, wherein the number of REs available for the first frequency unit to transmit data symbols in one subframe is less than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and the locations and the number of REs available for the first frequency unit to transmit data symbols in one subframe are the same as the locations and the number of REs available for the second frequency unit to transmit data symbols in one subframe.
The communication device of claim 13, wherein K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, K being a positive integer.
The communications device of any of claims 13 to 17, wherein the transceiver module is further configured to: and sending indication information to the second communication device, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.
A communication device, comprising:

a transceiver module, configured to receive N pieces of configuration information sent by a first communications device, where the N pieces of configuration information correspond to N frequency units one to one, the N pieces of configuration information respectively include frequency domain location information of the frequency units corresponding to the N pieces of configuration information, the N frequency units employ a frequency hopping mode, and each of the N frequency units includes M carriers or M resource blocks RB or M subcarriers, where N is a positive integer greater than 1 and M is a positive integer;

a processing module, configured to determine frequency domain positions of the N frequency domain units according to the N configuration information;

the transceiver module is further configured to receive data sent by the first communication device from the N frequency units.
The communications device of claim 19, wherein the N frequency units satisfy at least one of:

the deployment modes are the same, and comprise an independent deployment mode, a guard band deployment mode or an in-band deployment mode;

the number of antenna ports of the reference signals is the same;

the starting symbol positions for data transmission within one subframe or within one slot or within the first slot of one subframe are the same.
The communications device of claim 19, wherein the number of REs available for transmission of data symbols by the first frequency unit in a subframe is greater than or equal to the number of REs available for transmission of data symbols by the second frequency unit in a subframe, then REs available for transmission of data symbols by the second frequency unit in a subframe are mapped for data symbols with reference to REs available for transmission of data symbols by the first frequency unit in a subframe, wherein REs unavailable for transmission of data symbols by the second frequency unit in a subframe participate in counting but are not used for mapping of data symbols.
The communications device of claim 19, wherein the number of REs available for the first frequency unit to transmit data symbols in one subframe is less than or equal to the number of REs available for the second frequency unit to transmit data symbols in one subframe, and wherein the positions and the number of REs available for the first frequency unit to transmit data symbols in one subframe are the same as the positions and the number of REs available for the second frequency unit to transmit data symbols in one subframe.
The communication device of claim 19, wherein K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, K being a positive integer.
The communications device of any of claims 19 to 23, wherein the transceiver module is further configured to: and receiving indication information sent by the first communication device, wherein the indication information is used for indicating the time domain frequency hopping intervals of the N frequency units.
A communication system comprising a first communication device according to any one of claims 13 to 18 and a second communication device according to any one of claims 19 to 24.
A computer storage medium comprising instructions that, when executed on a processor, implement the information transfer method of any of claims 1 to 6 or claims 7 to 12.