CN113785644B

CN113785644B - Information transmission method, related equipment and system

Info

Publication number: CN113785644B
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: 2024-04-26
Anticipated expiration: 2039-05-27
Also published as: CN113785644A; WO2020237451A1

Abstract

The application discloses an information transmission method, related equipment and a system, wherein the method comprises the following steps: the first communication equipment 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 (RBs) or M subcarriers, N is a positive integer greater than 1, and M is a positive integer; the first communication device sends N pieces of configuration information to the second communication device, the N pieces of configuration information are in one-to-one correspondence with the N frequency units, and the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units; the first communication device transmits data to the second communication device on the N frequency domain units. By implementing the embodiment of the application, the duration of downlink transmission can be reduced, and then the inter-cell interference can be 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, related devices, and a system.

Background

The internet of things (internet of things, ioT) is the "internet of things. The method expands the user end of the Internet to any article to article for information exchange and communication. Such a communication scheme is also called inter-machine communication (MTC), and a node for communication is called an MTC terminal. Typical internet of things applications include smart grid, smart agriculture, smart transportation, smart home, and environmental detection. Because the internet of things needs to be applied in various scenes, such as from outdoor to indoor and from ground to underground, a lot of special requirements are put on the design of the internet of things.

Many MTC applications are in environments with poor coverage, such as electricity meter water meters, which are often installed in rooms or even basements where wireless network signals are poor, and thus coverage enhancement techniques are needed to address this. The main technical scheme of narrowband internet of things (narrow band internet of thing, NB-IoT) systems currently downstream for coverage enhancement is repetition. And by repeating the transmission, the receiving side performs merging to improve the signal to noise ratio. The downlink may support frequency division multiplexing (frequency division multiplexing, FDM) except for narrowband physical downlink control channels (narrowband physical downlink control channel, NPDCCH), and narrowband physical downlink shared channels (narrowband physical downlink SHARED CHANNEL, NPDSCH) support only time division multiplexing (time division multiplexing, TDM).

The NB-IoT system bandwidth is 180kHz, the NPDSCH transmission occupies a bandwidth of 180kHz, and the NPDCCH transmission occupies a bandwidth of 90kHz or 180kHz. As schematically scheduled by the arrowed curve between NPDCCH and NPDSCH in fig. 1, NPDSCH, which is indicated by the arrowed end, is scheduled by NPDCCH. 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, TDM is between NPDCCH of UE1 and NPDSCH of UE1, TDM is between NPDCCH of UE1 and NPDCCH of UE2, and TDM is between NPDSCH of UE1 and NPDSCH of UE 2.

In the prior art, NPDSCH supports TDM only, and for the same-frequency networking, when downlink transmission needs a large number of repetitions or takes a long time, inter-cell interference can be serious. Therefore, how to reduce the duration of downlink transmission and thus reduce inter-cell interference is a technical problem that needs 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 duration of downlink transmission and further reduce 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, where the N frequency units employ a frequency hopping pattern, where each frequency unit 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. And then, the first communication device sends N pieces of configuration information to the second communication device, wherein the N pieces of configuration information are in one-to-one correspondence with the N frequency units, and the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units. Thereafter, the first communication device transmits data to the second communication device over 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 bandwidth, the frequency domain position and the time domain frequency hopping interval of the plurality of frequency units can be flexibly configured, so that the method is not limited to narrowband frequency hopping. The data sent to the terminal equipment by the network equipment are frequency-hopped among the plurality of frequency units, so that the coverage performance can be improved by utilizing the frequency diversity gain of the frequency hopping, and the time domain transmission duration is reduced, thereby reducing the inter-cell interference.

In one possible design, the N frequency units satisfy at least one of the following: 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. Wherein the deployment modes include 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 the plurality of frequency units meets at least one of the following: by adopting the same deployment mode, the antenna ports of the reference signals are the same, the initial symbol positions used for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the same RE number used for mapping data symbol resources on different frequency units can be ensured, and 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, so that the complexity of merging and decoding of terminal equipment is reduced.

In one possible design, the number of Resource Elements (REs) available for transmitting data symbols in one subframe is greater than or equal to the number of REs available for transmitting data symbols in one subframe for a second frequency unit, where the REs available for transmitting data symbols in one subframe for the second frequency unit are mapped to data symbols based on the REs available for transmitting data symbols in one subframe for the first frequency unit, where the REs unavailable for transmitting data symbols in one subframe for the second frequency unit participate in counting but are not used for mapping data symbols. By implementing the embodiment of the invention, for the deployment mode of a plurality of frequency units, the number of antenna ports of reference signals on the plurality of frequency units is not limited by the position of a starting symbol used for data transmission in one subframe or one time slot or the first time slot of one subframe, the flexibility of network deployment can be increased, and the complexity of merging and decoding of terminal equipment can be reduced by adopting the same rate matching mode when subframe-level repetition or subframe of one transmission block needs to be mapped to the subframes on the plurality of frequency units through the constraint of a resource mapping mode or a time domain frequency hopping interval.

In one possible design, the number of REs available for transmitting data symbols in one subframe by the first frequency unit is less than or equal to the number of REs available for transmitting data symbols in one subframe by the second frequency unit, and the locations and numbers of REs available for transmitting data symbols in one subframe by the first frequency unit are the same as the locations and numbers of REs available for transmitting data symbols in one subframe by the second frequency unit. By implementing the embodiment of the invention, for the deployment mode of a plurality of frequency units, the number of antenna ports of reference signals on the plurality of frequency units is not limited by the position of a starting symbol used for data transmission in one subframe or one time slot or the first time slot of one subframe, the flexibility of network deployment can be increased, and the complexity of merging and decoding of terminal equipment can be reduced by adopting the same rate matching mode when subframe-level repetition or subframe of one transmission block needs to be mapped to the subframes on the plurality of frequency units through the constraint of a resource mapping mode or a time domain frequency hopping interval.

In one possible design, consecutive K subframes for transmitting the same data symbol are located in the same frequency unit, K being a positive integer. By implementing the embodiment of the invention, for the deployment mode of a plurality of frequency units, the number of antenna ports of reference signals on the plurality of frequency units is not limited by the position of a starting symbol used for data transmission in one subframe or one time slot or the first time slot of one subframe, the flexibility of network deployment can be increased, and the complexity of merging and decoding of terminal equipment can be reduced by adopting the same rate matching mode when subframe-level repetition or subframe of one transmission block needs to be mapped to the subframes on the plurality of frequency units through the constraint of a resource mapping mode or a time domain frequency hopping interval.

In one possible design, the method further comprises: the first communication device transmits indication information to the second communication device, the indication information being used to indicate time domain frequency hopping intervals of the N frequency units.

In one possible design, the method further comprises: the first communication device transmits indication information to the second communication device, the indication information being used to indicate a time domain frequency hopping interval of each of 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 may be 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 frequency units in the N frequency units are the same or different. The flexibility of the configuration of the frequency hopping manner can be increased.

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

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

In one 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 are in one-to-one correspondence with N pieces of frequency units, the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units, 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 greater than 1, and M is a positive integer. The second communication device determines frequency domain positions of the N frequency domain units according to the N configuration information, and then receives data sent by the first communication device 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, the bandwidths, the frequency domain positions and the time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured, and the method is not limited to narrowband frequency hopping. The data of the terminal equipment are frequency-hopped among the plurality of frequency units, so that the coverage performance can be improved by utilizing the frequency diversity gain of the frequency hopping, and the time domain transmission duration is reduced, thereby reducing the inter-cell interference.

In one possible design, the number of REs available for transmitting data symbols in one subframe is greater than or equal to the number of REs available for transmitting data symbols in one subframe for a second frequency unit, and the REs available for transmitting data symbols in one subframe for the second frequency unit are mapped to data symbols based on the REs available for transmitting data symbols in one subframe for the first frequency unit, wherein the REs not available for transmitting data symbols in one subframe for the second frequency unit participate in counting but are not used for mapping data symbols. By implementing the embodiment of the invention, for the deployment mode of a plurality of frequency units, the number of antenna ports of reference signals on the plurality of frequency units is not limited by the position of a starting symbol used for data transmission in one subframe or one time slot or the first time slot of one subframe, the flexibility of network deployment can be increased, and the complexity of merging and decoding of terminal equipment can be reduced by adopting the same rate matching mode when subframe-level repetition or subframe of one transmission block needs to be mapped to the subframes on the plurality of frequency units through the constraint of a resource mapping mode or a time domain frequency hopping interval.

In one possible design, the method further comprises: the second communication device receives indication information sent by the first communication device, where the indication information is used to indicate time domain frequency hopping intervals of the N frequency units.

In one possible design, the method further comprises: the second communication device receives indication information sent by the first communication device, where the indication information is used to indicate a time domain frequency hopping interval of each of the N frequency units.

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

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 for performing the information transmission method provided in the first aspect, or the information transmission method provided in any one of possible implementation manners of the first aspect, respectively.

For example, the first communication device includes: the device comprises a processing module and a receiving and transmitting module.

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

The receiving and transmitting module is used for transmitting N pieces of configuration information to the second communication equipment, the N pieces of configuration information are in one-to-one correspondence with the N frequency units, and the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units;

and the transceiver module is also used for transmitting data to the second communication equipment 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 for performing 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, respectively.

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

The receiving and transmitting module is used for receiving N pieces of configuration information sent by the first communication equipment, the N pieces of configuration information are in one-to-one correspondence with N pieces of frequency units, the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units, 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 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 configuration information;

and the transceiver module is also 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 time domain frequency hopping intervals of 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 for performing the information transmission method described in the first aspect. The communication device is a first communication device, which 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 transmitting 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 in the first aspect. Wherein the transmitter and the receiver may be integrated as a transceiver. The processor is configured to support the first communication device to perform other processing steps of the information transmission method provided in the first aspect, except for transmitting information and receiving information. It should be noted that, in the embodiments of the present invention, the transmitter and the receiver 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 code stored in the memory, that is, execute the information transmission method provided in the first aspect, or execute the information transmission method provided in any one of possible implementation manners of the first aspect.

In a sixth aspect, an embodiment of the present invention provides another communication device for performing the information transmission method described in the second aspect. The communication device is a second communication device, which 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 in 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 in the second aspect. Wherein the transmitter and the receiver may be integrated as a transceiver. The processor is configured to support the second communication device to perform other processing steps in the information transmission method provided in the second aspect, except for transmitting information and receiving information. It should be noted that, in the embodiments of the present invention, the transmitter and the receiver 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 second aspect, and the processor is configured to execute the program code stored in the memory, that is, execute the information transmission method provided in the second aspect, or execute the information transmission method provided in any one of possible implementation manners of the second aspect. The memory and processor may be integrated or coupled via a coupler.

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

In an eighth aspect, embodiments of the present invention provide a computer readable storage medium having instructions stored thereon, which when run on a computer, cause the computer to perform the information transmission method described in any of the above aspects.

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

In a tenth aspect, embodiments of the present invention provide a communication chip, which may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to invoke the information transmission method provided in any of the above aspects from the memory and execute instructions contained in the program. The interface may be used to output a processing result of the processor.

Drawings

In order to more clearly describe the embodiments of the present application or the technical solutions in the background art, the following description will describe the drawings that are required to be used in the embodiments of the present application or the background art.

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 schematic flow chart of an information transmission method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a frequency hopping pattern according to 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 provided by 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 logic structure diagram of a first communication device according to an embodiment of the present invention;

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

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

fig. 12 is a schematic 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 of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application.

The communication system according to the present application will be described first. Referring to fig. 2, fig. 2 illustrates a wireless communication system according to an embodiment of the present application. The wireless communication system 100 may operate in an licensed frequency band or an unlicensed frequency band. The wireless communication system 100 is not limited to a long term evolution (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 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, one or more terminal devices 102. Wherein:

Network device 101 may communicate 103 wirelessly with terminal device 102 via one or more antennas. Each network device 101 may provide communication coverage for its corresponding 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 an embodiment of the present application, the network device 101 may include: an evolved node B (eNB or eNodeB), or a next-generation node (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 station), micro base stations (micro base station), and so on. The 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 transceiver function, which can be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on an aircraft, balloon, etc.). The terminal device 102 may be a machine type communication (eMTC) terminal, a mobile phone, a tablet (Pad), a laptop, a computer with wireless transceiving capability, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in remote medical (remote medium), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart car, a wireless terminal in smart home (smart home), and the like. The embodiment of the application does not limit the application scene. 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 terminal, mobile client, mobile unit, remote station, remote terminal device, remote unit, wireless communication device, user agent, user equipment, or the like.

For example, the terminal device 102 may be an NB-IoT terminal, or an enhanced machine type communication (eMTC) terminal. In order to save power consumption and reduce cost, the operation bandwidth of an eMTC terminal may be generally smaller than that of an LTE system. For example, the operation bandwidth of an eMTC terminal may be one narrowband NB, one NB comprising 6 consecutive physical resource blocks (physical resource block, PRB), one physical resource block PRB comprising 12 subcarriers (Subcartier, SC). The terminal device 102 may also include smart home devices, and may also include mobile terminals such as mobile phones.

The terminal device 102 may 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, etc.

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 evolving systems (e.g., evolved enhanced machine type communication (Further eMTC, feMTC), evolved enhanced machine type communication (Even Further eMTC, eFeMTC), or Additional Machine Type Communication (AMTC), etc.).

In the embodiment of the present application, the network device 101 may send a reference signal (REFERENCE SIGNAL, RS) to the terminal device 102. Wherein the RS may include, but is not limited to: cell-specific reference signals (cell-SPECIFIC REFERENCE SIGNAL, CRS) or channel state information reference signals (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS).

By way of example, the first communication device mentioned in the various embodiments described below 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 embodiments of the present application may be used interchangeably. "plurality" means two or more, and "plurality" may also be understood as "at least two" in this embodiment of the present application. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

The concept of carriers, RBs, and subcarriers according to the present application will be described below. A carrier refers to a segment of contiguous resources in the frequency domain. 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 400MHz, for example. In LTE, one RB includes one subframe (e.g., 14 symbols (symbol)) in the time domain and 12 subcarriers (Subcarrier, SC) in the frequency domain. In NR, one RB includes 12 subcarriers. For example, one subcarrier has a bandwidth of 15kHz, one RB has a bandwidth of 180kHz, or one subcarrier has a bandwidth of 30kHz, one RB has a bandwidth of 360kHz.

The deployment mode involved in the present application is explained below.

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

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

Guard band deployment: the NB-IoT is transmitted using one or more resource blocks unused in the E-UTRA carrier guard band, wherein a bandwidth of one resource block is 180kHz.

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

The resource mapping patterns of the three deployment modes are described in connection with fig. 3. Referring to fig. 3, a schematic diagram of resource locations of three deployment mode reference signals in one RB (indicated by 14 symbols in the time domain and 12 subcarriers in the frequency domain), and one white square in fig. 3 represents a Resource Element (RE) that may be used for mapping data symbols, or an RE that may be used for mapping resources. For the 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. For the in-band deployment mode, in the right example of fig. 3, the number of REs available for mapping of data symbols in one RB in the frequency domain is at most 12×14-3×12-4*4-8*2 =100.

It should be noted that the above three deployment modes are only one example. The guard band deployment may be to utilize frequency resources that are not utilized in guard bands of the existing communication system, and the in-band deployment may be to utilize frequency resources within carriers of the existing communication system, such as resources that occupy a portion of the 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 for NB-IoT systems is repetition at present. The NPDSCH supports TDM only except NPDCCH for FDM. For the same-frequency networking, or downlink transmission needs a large number of repetitions or takes a long time, inter-cell interference can be serious. The application mainly provides a frequency hopping scheme, which can improve coverage performance and reduce downlink transmission duration through frequency diversity, and simultaneously provides a resource mapping method for reducing complexity of merging and decoding of terminal equipment aiming at the situation that frequency hopping occurs on carriers with 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 steps of:

s401: the first communication device determines N frequency units, wherein the N frequency units adopt a frequency hopping mode, the frequency units comprise M carriers or M Resource Blocks (RBs) or M subcarriers, N is a positive integer greater 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 are in one-to-one correspondence with the N pieces of frequency units, and the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units.

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

S404: the first communication device transmits data to the second communication device over the N frequency units from which the second communication device receives the data transmitted by the first communication device.

For example, N may be a positive integer of 2 or 3 or 4 or 5 or 6 or the like, or 2 or more.

Wherein the data herein is meant to be generic and includes traffic 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, etc.

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).

The above-mentioned N frequency units are used for transmitting data symbols to the second communication device. The number of N may or may not be the same for different terminals. For example, for UE1, the number of frequency units used to map data symbols is 2, while for UE2, the number of frequency units used to map data symbols is 3.

Optionally, each frequency unit includes one or more carriers in succession, or includes one or more subcarriers (Subcarrier) in succession, or includes one or more Narrowband (NB) in succession, or includes one or more subbands (Subband) in succession. For example, referring to fig. 5, the bandwidths of frequency unit 0 and frequency unit 1 are 1 RB, PDSCH of UE1 hops on frequency unit 0 and frequency unit 1, and the hopping sequence is: frequency unit 0 and frequency unit 1. PDSCH of UE2 also hops on frequency unit 0 and frequency unit 1 in the following order: frequency unit 1 and frequency unit 0.

Regarding the frequency domain hopping pattern, from the frequency unit of the initial frequency hopping, how to hop the frequency sequentially may be according to a preset sequence, for example, it may be agreed that the frequency unit of the initial frequency hopping starts, and the frequency hopping is performed according to the configured frequency unit index sequence, or the frequency hopping may be performed according to the configured sequence 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 unit corresponding to the configuration information, so as to indicate the hopping sequence of the N frequency units, as shown in fig. 5, where the network device sends two configuration information to the UE1, one configuration information includes the frequency domain location information of the frequency unit 0, the other configuration information includes the frequency domain location information of the frequency unit 1, and one or two configuration information of the two configuration information further includes the hopping sequence of the UE1, where the hopping sequence is: frequency unit 0 and frequency unit 1. The network device sends two configuration information to the UE2, wherein one configuration information includes frequency domain location information of the frequency unit 0, the other configuration information includes frequency domain location information of the frequency unit 1, and in addition, one or both of the two configuration information further includes a frequency hopping sequence of the UE2, and the frequency hopping sequence is: frequency unit 1 and frequency unit 0.

Alternatively, bandwidths of different frequency units in the N frequency units may be the same or different, which is not limited by the present application. As shown in fig. 5, taking the same bandwidth of each frequency unit as an example, each of the frequency unit 0 and the frequency unit 1 includes 1 RB, and the bandwidths are 180kHz. Or 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 360kHz.

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

Optionally, the N frequency units occupy discontinuous frequency domain resources, that is, the N frequency units are not adjacent in the frequency domain, that is, any two of the N frequency units are not adjacent in the frequency domain. Any two frequency units of the N frequency units may be spaced apart by a number of subcarriers, or a number of RBs, or a number of 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 apart by 1 RB.

Optionally, the N frequency units occupy continuous frequency domain resources, that is, the N frequency units are adjacent 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 or partially not adjacent to each other in the frequency domain, which is not limited to this aspect of the application.

Optionally, the first communication device may further send indication information to the second communication device, where the indication information is used to indicate a time domain frequency hopping interval of the N frequency units. The meaning of the time domain frequency hopping interval can be the duration of no frequency hopping in the time domain, and can also be the duration of the interval between two adjacent frequency hopping in the time domain. For example, only one common time-domain frequency hopping interval may be configured, and the time-domain frequency hopping intervals of the N frequency units are all equal to the common time-domain frequency 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, it may be carried in a system message (system information block, SIB), a radio resource control (radio resource control, RRC) message, a medium access control element (MEDIA ACCESS control control element, MAC CE) message, or downlink control information (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 then the indication information may be sent to the UE through DCI. Of course, the time domain frequency hopping interval can be predefined in the protocol, so that the network equipment is not required to send the time domain frequency hopping intervals of the N frequency units to the terminal, and signaling overhead is saved. In this case, the time-domain hopping intervals of the respective frequency units are the same.

Alternatively, the time-domain hopping interval may be an integer multiple of a subframe or an integer multiple of a slot or an integer multiple of a symbol. The application is illustrated by taking the example that the time domain frequency hopping interval can be an integer multiple of a subframe.

Alternatively, the time domain frequency hopping intervals of different frequency units in the N frequency units may be the same or different, which is not limited in the present application. As shown in fig. 5, taking the example that the time-domain frequency hopping intervals of the respective 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 frequency hopping intervals is 1 subframe. Or each of the frequency unit 0 and the frequency unit 1 comprises 1 RB, and the time domain hopping interval of the frequency unit 0 is 1 subframe, and the time domain hopping interval of the frequency unit 1 is 2 subframes.

Optionally, the first communication device may further send indication information to the second communication device, 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, a total of N time-domain frequency hopping intervals need to be configured.

Note that, the start time of frequency hopping of the N frequency units may be frame 0 or subframe 0. The starting position of the time domain frequency hopping can be predefined by the 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 UE2 receives a time domain frequency hopping interval sent by a network device at time t1, UE2 calculates a frequency hopping position according to the position of the current subframe and the time domain frequency hopping interval, receives data at frequency unit 1 between time t1 and 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 an absolute frequency point number+offset information of the frequency unit, or a start frequency point+end frequency point of the frequency unit, or a start frequency point+bandwidth of the frequency unit, or an end frequency point+bandwidth of the frequency unit. As shown in fig. 5, if the bandwidth of the frequency unit 0 is 1 RB, the frequency domain position of the frequency unit 0 is RB0, the bandwidth of the frequency unit 1 is 1 RB, and the frequency domain position of the frequency unit 1 is RB2, the 2 configuration information sent by the network device to the UE1 includes index numbers or absolute frequency point numbers of RB0 and RB2, respectively, so as to indicate the frequency domain resources occupied by PDSCH frequency hopping of the 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, effective subframe configuration, downlink interval (DLgap) configuration. The terminal device can determine the mapping pattern according to the configuration information, and then can 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 a plurality of frequency units to the terminal device, and bandwidths, frequency domain positions and time domain frequency hopping intervals of the plurality of frequency units can be flexibly configured, so that the method is not limited to narrowband frequency hopping and is not limited to system bandwidth. The data of the terminal equipment are frequency-hopped among the plurality of frequency units, so that the coverage performance can be improved by utilizing the frequency diversity gain of the frequency hopping, and the time domain transmission duration is reduced, thereby reducing the inter-cell interference.

In a first embodiment, the N frequency units satisfy at least one of the following: 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. Wherein the deployment modes include 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 antenna ports of the reference signals are the same, the initial symbol positions used for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the same RE number used for data symbol resource mapping on different frequency units can be ensured, and 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, so that the complexity of merging decoding of terminal equipment is reduced. The sub-frame level repetition has the advantages that complex symbols can be directly combined, the performance is improved, symbols transmitted on two sub-frames are identical, and the accuracy of frequency offset estimation can be improved through differential operation.

The reference signals may include demodulation reference signals (demodulation REFERENCE SIGNAL, DMRS) for a data channel, demodulation reference signals for a control channel, positioning Reference Signals (PRS) for a control channel, channel state information reference signals (CHANNEL STATE information-REFERENCE SIGNAL, CSI-RS), wake Up Signals (WUS), phase-tracking reference signals (PTRS), cell-specific reference signals (cell-SPECIFIC REFERENCE SIGNALS, CRS), narrowband reference signals (narrow band REFERENCE SIGNAL, NRS), narrowband positioning reference signals (narrowband positioning REFERENCE SIGNAL), narrowband wake up signals (narrowband wake up signal, NWUS), or MTC wake up signals (MTC wake up signal, MWUS).

According to 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. The data of the terminal equipment are frequency-hopped among the plurality of frequency units, so that the coverage performance can be improved by utilizing the frequency diversity gain of the frequency hopping, and the time domain transmission duration is reduced, thereby reducing the inter-cell interference. The constraint between the plurality of frequency bins satisfies at least one of: the same deployment mode is adopted, the antenna ports of the reference signals are the same, the initial symbol positions used for data transmission in one subframe or one time slot or the first time slot of one subframe are the same, the same RE number used for data symbol resource mapping on different frequency units can be ensured, and 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, so that the complexity of merging decoding of terminal equipment is reduced.

In the second embodiment, the deployment modes of the N frequency units may be different, or the number of antenna ports of the reference signals 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 more flexible for network deployment to deploy among multiple different systems, but the number of REs available for mapping of data symbol resources may be different on different frequency units, and when subframe level repetition is used on multiple frequency units or one transport block needs to be mapped to subframes on multiple frequency units, different rate matching approaches may be required for the terminal device, which may increase the complexity of combining and decoding by the terminal device. In order to solve the problem of reducing the complexity of merging decoding at the receiving end, the embodiment of the invention provides the following three solutions.

Mode one: the data symbols mapped at REs that cannot be used for data symbol transmission in the frequency unit puncture with a smaller number of REs can be used as a reference according to the frequency unit with a larger number of available REs (REs that can be used for mapping data symbols) in one subframe. Here puncture refers to being calculated but not used in the mapping. As shown in fig. 7, if the number of available REs in the frequency unit 0 is greater than the number of available REs in the frequency unit 1, the frequency unit 1 performs data symbol mapping according to the pattern of available REs in the frequency unit 0 based on the frequency unit 0. In fig. 7, the numbers of available REs in one subframe are shown, 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 combine and receive the portions with the same indexes of REs on frequency unit 0 and frequency unit 1.

Mode two: the resource mapping may be performed by different frequency units according to a reference based on which frequency units with a smaller number of available REs (REs available for mapping data symbols) within one subframe are used. As shown in fig. 8, if the number of available REs in the frequency unit 1 is smaller than that of the frequency unit 0, the frequency unit 0 is mapped according to the pattern of available REs in the frequency unit 1, and the positions and the number of REs in one subframe, which are available for transmitting data symbols in the frequency unit 0, are the same as those in one subframe, which are available for transmitting data symbols in the frequency unit 1. It can be seen that the number of REs actually used for data symbol mapping in the frequency unit 0 in the second mode is smaller than that in the first mode. In fig. 8, the numbers of available REs in one subframe are drawn, and it can be seen that in this way, frequency unit 0 and frequency unit 1 facilitate subframe level repetition, and the indexes of REs on frequency unit 0 and frequency unit 1 are identical, so that the receiving end can combine and receive the portions with identical indexes of REs on frequency unit 0 and frequency unit 1.

Mode three: 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 repetition of the subframe level needs to cross frequency units, the time domain frequency hopping interval can be prolonged to solve the problem, so that the continuous K subframes for transmitting the same data symbols are mapped on the same frequency unit, and thus the receiving end can combine and receive the same data symbols transmitted by at least two subframes on the same frequency unit. In this case, the network device may inform the terminal of the offset information to indicate the extended time domain hopping interval.

According to 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 are frequency-hopped among the plurality of frequency units, so that the coverage performance can be improved by utilizing the frequency diversity gain of the frequency hopping, and the time domain transmission duration is reduced, thereby reducing the inter-cell interference. The deployment mode of a plurality of frequency units, the number of antenna ports of reference signals on the plurality of frequency units, and the initial symbol position of the plurality of frequency units for data transmission in one subframe or one time slot or the first time slot of one subframe are not constrained, so that the network deployment flexibility can be improved, and the subframe level repetition complexity and the terminal equipment merging decoding complexity are reduced through 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 embodiment may be a valid subframe. The definition of the active subframes is related to the specific communication system.

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

for example, the terminal device determines that the subframe transmitted by the narrowband primary synchronization signal (narrowband primary synchronization signal, NPSS), or the narrowband secondary synchronization signal (narrowband secondary synchronization signal, NSSS), or the narrowband physical broadcast channel (narrowband physical broadcast channel, NPBCH), or the NB system information block type (systemInformation block type 1-NB) is an NB-IoT downlink subframe.

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

Taking eMTC system as an example, the active subframe may be referred to as a bandwidth reduced Low complexity or coverage enhanced Low-complexity or coverage enhanced (BL/CE) downlink subframe. The BL/CE downlink subframes may be configured by configuration parameters configured by system messages or RRC signaling.

The scheme provided by the embodiment of the application is mainly introduced from the interaction point of the devices. It is understood that each network element, e.g. terminal device, network device, etc., for implementing the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will readily appreciate that the application may be implemented in hardware or a combination of hardware and computer software, as the network elements and algorithm steps of the examples described in connection with the embodiments disclosed herein. Whether a function is implemented as hardware or computer software driven 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 will be appreciated that, in the above method, the method implemented by the network device (the first communication device) may be implemented by a component (e.g. a chip or a circuit) that is configurable in the network device, and the method implemented by the terminal device (the second communication device) may be implemented by a component (e.g. a chip or a circuit) that is configurable in the terminal device.

The embodiment of the application can divide the functional modules of the terminal equipment, the network equipment and the like according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

Fig. 9 shows a schematic diagram of a possible logic structure of the first communication device involved in the above-described embodiments in the case of dividing the respective functional modules with the respective functions, and the first communication device 900 is used to perform the procedure of the respective first communication devices in the above-described 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 transmitting information by the corresponding first communication device in the method embodiment shown in fig. 4. The processing module 901 is 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, implement functions other than the transceiver 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 invoke the code or the data of the storage module, so that the first communication device 900 implements determining N frequency units, where the N frequency units use 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.

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 memory module may be a memory. The processing module, the transceiver module and the storage module can be integrated together or separated.

Fig. 10 shows a schematic diagram of a possible logic structure of a second communication device involved in the above-described embodiments, where the second communication device is configured to perform the procedure of the corresponding second communication device in the above-described method embodiments. The second communication device 1000 includes: a transceiver module 1001 and a processing module 1002. The transceiver module 1001 is for supporting the second communication device 1000 to perform the steps of receiving or transmitting information by the corresponding second communication device in the method embodiment shown in fig. 4. The processing module 1002 is configured to support the second communication device to perform the processing steps related to the second communication device in the method embodiment shown in fig. 4, for example, implement functions other than the transceiver unit function, and so on. 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 invoke the code or the data of the storage module, so that the second communication device 1000 determines 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, etc. The memory 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 the network device according to the foregoing embodiment according to the embodiment of the present application. The network device may be the first communication device described above. The network device is configured to perform 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, a network interface 1103, a transceiver 1105, and an antenna 1108. These components may be connected by a bus 1104 or otherwise, as illustrated in FIG. 11. Wherein:

the network interface 1103 may be used for the 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 configured to perform transmission processing, such as signal modulation, on signals output by the processor 1101. The transceiver 1105 may also be configured to receive mobile communication signals received by the antenna 1108. Such as signal demodulation. In some embodiments of the application, 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 a transmission line to electromagnetic waves in free space or to convert electromagnetic waves in free space to electromagnetic energy in a transmission line.

The memory 1102 may be coupled to the processor 1101 through a bus 1104 or input/output ports, and the memory 1102 may be integrated with the processor 1101. Memory 1102 is used to store various software programs and/or sets of instructions or data. In particular, 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 uCOS, vxWorks, RTLinux. 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 processor unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs certain functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, or the like.

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

It is to be appreciated that the network device 1100 can be the network device 111 in the wireless communication system 110 shown in fig. 2, which can be implemented as a base transceiver station, a wireless transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), nodeB, eNodeB, gNB, and so forth.

It should be noted that, the network device 1100 shown in fig. 11 is merely an implementation manner of the embodiment of the present application, and in practical application, the network device 1100 may further include more or fewer components, which is not limited herein. For specific implementation of the network device 1100, reference may be made to the related description in the foregoing method embodiments, which is 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 provided by an embodiment of the present application, where the terminal device may be the foregoing second communication device. The terminal device is configured to execute the process corresponding to the second communication device in the foregoing method embodiments. As shown in fig. 12, the terminal device 120 may include: input/output modules (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, fig. 12 being an example of a connection via a bus. 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 used to perform transmission processing on the signal output from the processor 121, and may also be used to perform reception processing on the mobile communication signal received by the antenna 123. In an embodiment of the present application, transceiver 122 may be considered a wireless modem. In the terminal device 120, the number of 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 high-fidelity (WIRELESS FIDELITY, wi-Fi) module, and so on. Not limited to the above-described wireless communication signals, the terminal device 120 may also support other wireless communication signals, such as satellite signals, short wave signals, and the like. The terminal device 120 may also be configured with a wired network interface (e.g., LAN interface) to support wired communications, not limited to wireless communications.

The input/output module may be used to implement interaction between the terminal device 120 and the user/external environment, and may mainly include an audio input/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, etc. Wherein the input and output modules are in communication with the processor 121 via the user interface 128.

Memory 124 may be coupled to processor 121 via a bus or input/output ports, or memory 124 may be integrated with processor 121. 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 as a system), such as ANDROID, IOS, WINDOWS, or an embedded operating system, such as 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, and one or more network devices. The memory 124 may also store a user interface program that can vividly display the content image of the application program through a graphical operation interface, and receive control operations of the application program by a user through input controls such as menus, dialog boxes, buttons, and the like.

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 side of the terminal device 120. For 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 invoke a program stored in the memory 124, for example, a program for implementing the information transmission method provided by 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: global system for mobile communications (global system for mobile communication, GSM) (2G) communications, wideband code division multiple access (wideband code division multiple access, WCDMA) (3G) communications, and long term evolution (long term evolution, LTE) (4G) communications, and 5G communications, among others. Alternatively, when the processor 121 transmits any message or data, it transmits specifically by driving or controlling the transceiver 122. Alternatively, when the processor 121 receives any message or data, it specifically receives by driving or controlling the transceiver 122. Thus, the processor 121 may be regarded as a control center performing transmission or reception, and the transceiver 122 is a specific executor of transmission and reception operations.

It will 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, or the like.

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 application, the terminal device 120 may further include more or fewer components, which is not limited herein. For the specific implementation of the terminal device 120, reference may be made to the related description in the foregoing method embodiment, which is not repeated here.

Referring to fig. 13, fig. 13 shows a schematic structural diagram of a communication chip provided by 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. Exemplary:

Processor 1301 may be used to read and execute computer readable instructions. In a particular implementation, processor 1301 may include primarily a controller, an operator, and registers. Illustratively, the controller is primarily responsible for instruction decoding and issues control signals for the operations to which the instructions correspond. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, logic operations, and the like, and may also perform address operations and conversions. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In particular implementations, the hardware architecture of processor 1301 may be an Application SPECIFIC INTEGRATED Circuits (ASIC) architecture, a microprocessor (microprocessor without interlocked PIPED STAGES architecture, MIPS) architecture, an advanced reduced instruction set machine (ADVANCED RISC MACHINES, ARM) architecture, an NP architecture, or the like. Processor 1301 may be single-core or multi-core.

Illustratively, the interface 1302 may be used to input data to be processed to the processor 1301, and may output the processing results of the processor 1301 to the outside. In particular implementations, interface 1302 may be a general purpose input output (general purpose input output, GPIO) interface that may be coupled to a plurality of peripheral devices (e.g., a display (LCD), a camera, a Radio Frequency (RF) module, etc.). The interface 1302 is coupled to the processor 1301 by a bus 1303.

In a possible implementation manner, the processor 1301 may be configured to invoke, from the memory, an implementation program or data of the information transmission method provided by one or more embodiments of the present application on the network device or the 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 part of the communication chip 130 or may be separate from the communication chip 130. Interface 1302 may be used to output results of execution by processor 1301. In the present application, the interface 1302 may be specifically configured to output the decoding result of the processor 1301. Reference may be made to the foregoing embodiments for an information transmission method provided in one or more embodiments of the present application, which are not described herein.

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

In another embodiment of the present application, there is further provided a computer storage medium having stored therein computer-executable instructions that when a device (which may be a single-chip microcomputer, a chip or the like) or a processor may invoke the computer-executable instructions stored in the readable storage medium, cause the device or the processor to perform the steps of the terminal device or the network device in the information transmission method provided in fig. 4. The aforementioned computer storage medium may include: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

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 at least one processor of the device may read the computer-executable instructions from the computer-readable storage medium, the at least one processor executing the computer-executable instructions causing the device to perform the steps of the terminal device or 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. The network device may be the first communication device shown in fig. 9 or the network device provided in fig. 11, for example, and is configured to perform the steps of the information transmission method provided in fig. 4 corresponding to the first communication device. 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 perform the steps of the information transmission method provided in fig. 4 corresponding to the second communication device.

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

In the above embodiments, it may be implemented in whole or in part 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. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid state disk STATE DISK (SSD)), among others.

In summary, the above embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An information transmission method, comprising:

The first communication equipment 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 (RBs) or M subcarriers, N is a positive integer greater than 1, and M is a positive integer;

the first communication device sends N pieces of configuration information to the second communication device, the N pieces of configuration information are in one-to-one correspondence with the N frequency units, and the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units;

The first communication device transmitting data to the second communication device on the N frequency units;

the method further comprises the steps of:

If the N frequency units do not meet the preset condition, the N frequency units include a first frequency unit and a second frequency unit, the number of REs of resource units available for transmitting data symbols in one subframe is greater than the number of REs available for transmitting data symbols in one subframe by the first frequency unit, and the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped by taking REs available for transmitting data symbols in one subframe by the first frequency unit as references, wherein REs unavailable for transmitting data symbols in one subframe by the second frequency unit participate in counting but are not used for mapping data symbols;

The preset conditions include at least one of the following:

The deployment modes are the same, and the deployment modes comprise an independent deployment mode, a guard band deployment mode or an in-band deployment mode, and the deployment modes are used for determining a resource mapping pattern;

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.

2. The method according to claim 1, wherein the method further comprises: and if the N frequency units meet the preset condition, mapping the data symbols on a resource unit RE which can be used for transmitting the data symbols in the N frequency units.

3. The method according to claim 1, wherein the method further comprises:

If the N frequency units do not meet the preset condition, the N frequency units include a first frequency unit and a second frequency unit, and the number of REs available for transmitting data symbols in one subframe by the first frequency unit is smaller than the number of REs available for transmitting data symbols in one subframe by the second frequency unit, and then the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped by taking the REs available for transmitting data symbols in one subframe by the first frequency unit as references, wherein the positions and the number of REs of the data symbols mapped in one subframe by the first frequency unit are the same as the positions and the number of REs of the data symbols mapped in one subframe by the second frequency unit.

4. The method according to claim 1, wherein the method further comprises:

If the N frequency units do not meet the preset condition, the continuous K subframes for transmitting the same data symbol are located in the same frequency unit, where K is a positive integer.

5. The method according to any one of claims 1 to 4, further comprising:

the first communication device sends indication information to the second communication device, wherein the indication information is used for indicating time domain frequency hopping intervals of the N frequency units.

6. An information transmission method, comprising:

The second communication equipment receives N pieces of configuration information sent by the first communication equipment, the N pieces of configuration information are in one-to-one correspondence with N pieces of frequency units, the N pieces of configuration information respectively comprise frequency domain position information of the corresponding frequency units, 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 greater than 1, and M is a positive integer;

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

the second communication device receives data sent by the first communication device from the N frequency units;

the method further comprises the steps of:

If the N frequency units do not meet the preset condition, the N frequency units include a first frequency unit and a second frequency unit, the number of REs available for transmitting data symbols in one subframe by the first frequency unit is greater than the number of REs available for transmitting data symbols in one subframe by the second frequency unit, and then the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped by taking the REs available for transmitting data symbols in one subframe by the first frequency unit as a reference, wherein the REs unavailable for transmitting data symbols in one subframe by the second frequency unit participate in counting but are not used for mapping data symbols;

The preset conditions include at least one of the following:

the deployment modes are the same, and the deployment modes 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;

7. The method of claim 6, wherein the method further comprises:

And if the N frequency units meet the preset condition, mapping the data symbols on a resource unit RE which can be used for transmitting the data symbols in the N frequency units.

8. The method of claim 6, wherein the method further comprises:

9. The method of claim 6, wherein the method further comprises:

10. The method according to any one of claims 6 to 9, further comprising:

The second communication device receives indication information sent by the first communication device, where the indication information is used to indicate time domain frequency hopping intervals of the N frequency units.

11. A communication device, comprising:

the transceiver module is further configured to send data to the second communication device on the N frequency units;

If the N frequency units do not meet the preset condition, the N frequency units include a first frequency unit and a second frequency unit, and the number of REs available for transmitting data symbols in one subframe of the first frequency unit is greater than the number of REs available for transmitting data symbols in one subframe of the second frequency unit, then the REs available for transmitting data symbols in one subframe of the second frequency unit perform mapping of data symbols based on the REs available for transmitting data symbols in one subframe of the first frequency unit, wherein the REs unavailable for transmitting data symbols in one subframe of the second frequency unit participate in counting but are not used for mapping data symbols;

The preset conditions include at least one of the following:

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

12. The communication device according to claim 11, wherein if the N frequency units meet the preset condition, mapping the data symbols on resource units RE available for transmitting the data symbols among the N frequency units.

13. The communication device of claim 11, wherein if the N frequency units do not satisfy the preset condition, the N frequency units include a first frequency unit and a second frequency unit, and the number of REs available for transmitting data symbols in one subframe by the first frequency unit is smaller than the number of REs available for transmitting data symbols in one subframe by the second frequency unit, and the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped to data symbols based on REs available for transmitting data symbols in one subframe by the first frequency unit, where the positions and numbers of REs of data symbols mapped in one subframe by the first frequency unit are the same as those of REs of data symbols mapped in one subframe by the second frequency unit.

14. The communication device of claim 11, wherein if the N frequency units do not meet the preset condition, K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, where K is a positive integer.

15. The communication device according to any of claims 11 to 14, wherein 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.

16. A communication device, comprising:

the processing module is used for determining the frequency domain positions of the N frequency 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 preset conditions include at least one of the following:

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

17. The communication device according to claim 16, wherein if the N frequency units meet the preset condition, mapping the data symbols on resource units RE available for transmitting the data symbols among the N frequency units.

18. The communication device of claim 16, wherein if the N frequency units do not satisfy the preset condition, the N frequency units include a first frequency unit and a second frequency unit, and the number of REs available for transmitting data symbols in one subframe by the first frequency unit is smaller than the number of REs available for transmitting data symbols in one subframe by the second frequency unit, and the REs available for transmitting data symbols in one subframe by the second frequency unit are mapped to data symbols based on REs available for transmitting data symbols in one subframe by the first frequency unit, where the positions and numbers of REs of data symbols mapped in one subframe by the first frequency unit are the same as those of REs of data symbols mapped in one subframe by the second frequency unit.

19. The communication device of claim 16, wherein if the N frequency units do not meet the preset condition, K consecutive subframes for transmitting the same data symbol are located in the same frequency unit, where K is a positive integer.

20. The communication device according to any of claims 16 to 19, wherein 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 time domain frequency hopping intervals of the N frequency units.

21. A communication system comprising a first communication device and a second communication device, the first communication device being a communication device according to any one of claims 11 to 15, the second communication device being a communication device according to any one of claims 16 to 20.

22. A computer storage medium comprising instructions which, when executed on a processor, implement the information transmission method of any one of claims 1 to 5 or claims 6 to 10.