CN112771803B

CN112771803B - Communication method and device

Info

Publication number: CN112771803B
Application number: CN201880098147.5A
Authority: CN
Inventors: 赵越; 毕文平; 程型清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2022-10-25
Anticipated expiration: 2038-09-28
Also published as: CN112771803A; WO2020062109A1

Abstract

A communication method relates to the technical field of communication, and is used for transmitting an MPDCCH/PDSCH by utilizing a downlink control channel region under the scene of MTC independent deployment so as to improve the utilization rate of resources. The method comprises the following steps: the base station transmits data carried by partial OFDM symbols of the MPDCCH/PDSCH on a downlink control channel region, so that the MTC terminal can effectively utilize resources of a downlink control channel of a subframe.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

Machine to machine (M2M) means that data is transmitted from one terminal to another terminal, and a session between terminals is realized. M2M is one of the supporting technologies of the internet of things. The third Generation Partnership project (3 rd Generation Partnership project,3 gpp) defines M2M under existing cellular wireless network architecture as Machine Type Communication (MTC). The MTC is deployed based on a cellular network, and may be directly accessed to an existing Long Term Evolution (LTE) network.

Under the scene of conventional LTE and MTC co-deploymentAs shown in fig. 1, a distribution diagram of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), and a Machine Physical Downlink Control Channel (MPDCCH) is shown. Wherein, one subframe comprises 14 OFDM symbols, PDCCH occupies the first l of the subframe _pdcch One OFDM symbol, MPDCCH/PDSCH occupies the last 14-l of the subframe _pdcch A symbol. Wherein l _pdcch Has a value range of (1,2,3,4) | _pdcch Is configured by higher layer signaling or is predefined. For convenience of description, the first l occupied by the PDCCH in the subframe will be described below _pdcch One OFDM symbol is called a second region (or a downlink control channel region), and the last 14-l occupied by the MPDCCH/PDSCH in the subframe _pdcch One symbol is referred to as a first region.

With the steady increase of the number of deployed networks and the number of connected devices, in order to further improve the network operation efficiency of MTC, the standard proposes an objective: MTC independent deployment. Under the scene of MTC independent deployment, an LTE terminal does not exist in a network, so that a base station does not need to issue a PDCCH, idle of a downlink control channel region is caused, and time-frequency resources are wasted.

Disclosure of Invention

The application provides a communication method and device, which are used for improving resource utilization of a downlink control channel region in a backward compatible mode under the scene of MTC independent deployment.

In order to achieve the above purpose, the present application provides the following solutions:

in a first aspect, a communication method is provided, including: the base station maps the data to the MPDCCH; repeatedly transmitting the MPDCCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing data borne by partial OFDM symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more. Based on the technical scheme, on one hand, the base station uses the first region of the subframe to bear the MPDCCH according to the regulation of the previous version, thereby ensuring that the MTC terminal of the old version can normally receive the MPDCCH. On the other hand, the base station uses the second region of the subframe to carry data carried by a part of the OFDM symbols of the first region, the time-frequency resources of the second region in the subframe are fully utilized. In addition, because the data carried by the second regions of at least two subframes in the n subframes are different, the new-version MTC terminal can acquire more data from the second regions.

In one possible design, the second region of the subframe with sequence number i in the n subframes is used for bearing the condition that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe. Thus, in n subframes, adjacent ones

The data carried by the second region of one subframe is equivalent to the data carried by the first region in one subframe. That is, base station transmission

One sub-frame, which is equivalent to repeatedly transmitting

MPDCCH, thereby facilitating coverage enhancement of MTC network.

In a second aspect, a communication method is provided, including: the MTC terminal repeatedly receives the MPDCCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by part of OFDM symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more; after that, the MTC terminal detects data on MPDCCH. Based on the technical scheme, on one hand, the base station uses the first region of the subframe to bear the MPDCCH according to the regulation of the previous version, thereby ensuring that the MTC terminal of the old version normally receives the MPDCCH. On the other hand, the base station uses the second area of the subframe to carry the data carried by part of the OFDM symbols of the first area, and the time-frequency resources of the second area in the subframe are fully utilized. In addition, because the data carried by the second regions of at least two subframes in the n subframes are different, the new-version MTC terminal can acquire more data from the second regions.

The data carried by the second region of one subframe is equivalent to the data carried by the first region in one subframe. That is, terminal reception

One sub-frame corresponding to repeated reception

MPDCCH, thereby facilitating coverage enhancement of MTC network.

In a third aspect, a communication method is provided, including: the base station maps the data to PDSCH; then, the base station repeatedly transmits the PDSCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying a PDSCH, and the second region is used for carrying data carried by partial OFDM symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more. Based on the technical scheme, on one hand, the base station uses the first region of the subframe to bear the PDSCH according to the regulation of the previous version, thereby ensuring that the MTC terminal of the old version normally receives the PDSCH. On the other hand, the base station uses the second area of the subframe to carry the data carried by part of the OFDM symbols of the first area, and the time-frequency resources of the second area in the subframe are fully utilized. In addition, because the data carried by the second regions of at least two subframes in the n subframes are different, the new-version MTC terminal can acquire more data from the second regions.

In one possible design, the second region of the subframe with sequence number i in the n subframes is used for bearing the condition that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe. Thus, in n subframes, adjacent

One sub-frame, which is equivalent to repeatedly transmitting

And a PDSCH, thereby facilitating coverage enhancement of the MTC network.

In one possible design, the same redundancy version is applied to the first region of each of the n subframes. Therefore, the MTC terminal can merge n subframes.

In one possible design, the redundancy version applied to the second region of each of the n subframes is the same as the redundancy version applied to the first region. Therefore, the MTC terminal can combine the first region and the second region of the subframe.

In a fourth aspect, a communication method is provided, including: the MTC terminal repeatedly receives the PDSCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying a PDSCH, and the second region is used for carrying data carried by part of OFDM symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more; thereafter, the MTC terminal detects data on the PDSCH. Based on the technical scheme, on one hand, the base station uses the first region of the subframe to bear the PDSCH according to the regulation of the previous version, thereby ensuring that the MTC terminal of the old version normally receives the PDSCH. On the other hand, the base station uses the second area of the subframe to bear the data borne by part of the OFDM symbols of the first area, and the time-frequency resources of the second area in the subframe are fully utilized. In addition, because the data carried by the second regions of at least two subframes in the n subframes are different, the new-version MTC terminal can acquire more data from the second regions.

One sub-frame corresponding to repeated reception

And a PDSCH, thereby facilitating coverage enhancement of the MTC network.

In a fifth aspect, a communication method is provided, including: the base station maps the data to the MPDCCH; then, the base station transmits the MPDCCH on the subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch The number of symbols occupied by the second region. Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern on each OFDM symbol is the same, so that _pdcch In the process of copying the data carried by one OFDM symbol to the second area,/ _pdcch The data carried by one OFDM symbol need not be punctured. Thus, the data carried by the second area and l in the first area _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region in the subframe and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

In a sixth aspect, a communication method is provided, including: the MTC terminal receives the MPDCCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch A number of symbols occupied for the second region; after that, the MTC terminal detects data on MPDCCH. Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern on each OFDM symbol is the same, so that _pdcch In the process of copying the data carried by one OFDM symbol to the second area,/ _pdcch The data carried by one OFDM symbol need not be punctured. Thus, the second regionData carried by the domain and l in the first region _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region in the subframe and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

In a seventh aspect, a communication method is provided, including: the base station maps the data to PDSCH; then, the base station transmits PDSCH on the subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the PDSCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch The number of symbols occupied by the second region. Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern over one OFDM symbol is the same, so that _pdcch In the process of copying the data carried by one OFDM symbol to the second area,/ _pdcch The data carried by one OFDM symbol need not be punctured. Thus, the data carried by the second area and the data l in the first area _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

In an eighth aspect, a communication method is provided, including: the MTC terminal receives the PDSCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the PDSCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch A number of symbols occupied for the second region; thereafter, the MTC terminal detects data on the PDSCH. Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern over one OFDM symbol is the same, so that _pdcch Process for copying data carried by one OFDM symbol to a second areaIn, l _pdcch The data carried by one OFDM symbol need not be punctured. Thus, the data carried by the second area and the data l in the first area _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region in the subframe and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

In a ninth aspect, an access network apparatus is provided, including: and the processing module is used for mapping the data to the MPDCCH. A transmitting module, which repeatedly transmits the MPDCCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing data borne by partial OFDM symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

In one possible design, the second region of the subframe with sequence number i in the n subframes is used for bearing the condition that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbols of (a); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

In a tenth aspect, there is provided an access network apparatus comprising: a processing module for mapping data to a PDSCH. A transmitting module, configured to repeatedly transmit the PDSCH over n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying a PDSCH, and the second region is used for carrying data carried by partial OFDM symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

In one possible design, the second region of the subframe with sequence number i in the n subframes is used for bearing the condition that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbols of (a); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating occupation of a second areaThe number of OFDM symbols; m is the number of OFDM symbols included in one subframe.

In one possible design, the same redundancy version is applied to the first region of each of the n subframes.

In one possible design, the redundancy version applied to the second region of each of the n subframes is the same as the redundancy version applied to the first region.

In an eleventh aspect, an access network apparatus is provided, including: and the processing module is used for mapping the data to the MPDCCH. A sending module, configured to send an MPDCCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch The number of symbols occupied for the second region.

In a twelfth aspect, an access network apparatus is provided, including: a processing module for mapping data to a PDSCH. A transmitting module, configured to transmit a PDSCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the PDSCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch The number of symbols occupied by the second region.

In a thirteenth aspect, there is provided a computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the communication method of any one of the first, third, fifth or seventh aspects described above.

In a fourteenth aspect, there is provided a computer program product containing instructions which, when run on a computer, causes the computer to perform the communication method of any one of the first, third, fifth or seventh aspects described above.

In a fifteenth aspect, a chip system is provided, which includes a processor configured to support a base station to implement the functions recited in the first, third, fifth or seventh aspects. In one possible design, the system-on-chip further includes a memory for storing necessary program instructions and data for the base station. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any one of the design manners in the ninth aspect to the fifteenth aspect, reference may be made to technical effects brought by different design manners in the first aspect, the third aspect, the fifth aspect, or the seventh aspect, and details are not repeated here.

In a sixteenth aspect, an MTC terminal is provided, including: a receiving module, configured to repeatedly receive the MPDCCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing data borne by partial OFDM symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more. And the processing module is used for detecting data on the MPDCCH.

In one possible design, the second region of the subframe with sequence number i in the n subframes is used for bearing the condition that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

In a seventeenth aspect, an MTC terminal is provided, including: a receiving module, configured to repeatedly receive a PDSCH over n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying a PDSCH, and the second region is used for carrying data carried by partial OFDM symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more. And the processing module is used for detecting data on the PDSCH.

In one possible design, the second of n subframes with sequence number iThe number of the region for bearing the sub-frame satisfies mod (i multiplied by l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbols of (a); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

In an eighteenth aspect, there is provided an MTC terminal, including: a receiving module, configured to receive an MPDCCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the MPDCCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch The number of symbols occupied by the second region. And the processing module is used for detecting data on the MPDCCH.

In a nineteenth aspect, an MTC terminal is provided, including: a receiving module, configured to receive a PDSCH on a subframe; the subframe comprises a first region and a second region, wherein the first region is used for bearing the PDSCH, and the second region is used for bearing l on the first region _pdcch Data carried by one OFDM symbol; reference signal pattern and l on the second area _pdcch The reference signal patterns on the OFDM symbols are the same; l. the _pdcch The number of symbols occupied by the second region. And the processing module is used for detecting data on the PDSCH.

A twentieth aspect provides a computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the communication method of any one of the second, fourth, sixth or eighth aspects described above.

A twenty-first aspect provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of any of the second, fourth, sixth or eighth aspects above.

In a twenty-second aspect, there is provided a chip system, the chip system comprising a processor configured to support an MTC terminal to implement the functions recited in the second, fourth, sixth, or eighth aspects. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the MTC terminal. The chip system may be formed by a chip, or may include a chip and other discrete devices.

For technical effects brought by any one of the design manners in the sixteenth aspect to the twenty-second aspect, reference may be made to technical effects brought by different design manners in the second aspect, the fourth aspect, the sixth aspect, or the eighth aspect, and details are not described herein again.

Drawings

Fig. 1 is a schematic distribution diagram of a PDCCH, an MPDCCH and a PDSCH on a subframe according to an embodiment of the present disclosure;

fig. 2 is a schematic architecture diagram of an MTC network deployed independently according to an embodiment of the present application;

fig. 3 is a schematic diagram of a hardware structure of a base station and an MTC terminal according to an embodiment of the present application;

fig. 4 is a first flowchart of a communication method according to an embodiment of the present application;

fig. 5 is a first schematic diagram illustrating that a second region of a subframe carries data carried by a part of OFDM symbols of a first region according to an embodiment of the present application;

fig. 6 is a second flowchart of a communication method according to an embodiment of the present application;

fig. 7 is a second schematic diagram illustrating that a second region of a subframe carries data carried by a part of OFDM symbols of a first region according to an embodiment of the present application;

fig. 8 is a third schematic diagram illustrating that a second region of a subframe carries data carried by a part of OFDM symbols of a first region according to an embodiment of the present application;

fig. 9 is a fourth schematic diagram illustrating that a second region of a subframe carries data carried by a part of OFDM symbols of a first region according to an embodiment of the present application;

fig. 10 is a schematic diagram of a reference signal pattern on a subframe according to an embodiment of the present disclosure;

fig. 11 is a third flowchart of a communication method according to an embodiment of the present application;

fig. 12 is a fourth flowchart of a communication method according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of an access network apparatus according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an MTC terminal according to an embodiment of the present application.

Detailed Description

Currently, the standard proposes a goal: MTC independent deployment. For this purpose, there are two problems:

(1) In order to avoid the idle of the downlink control channel region, the standard supports the new version of the MTC terminal to use the downlink control channel region. However, how to use the downlink control channel region by the new-version MTC terminal, the prior art does not provide a corresponding solution.

(2) The old version of the MTC terminal does not have the capability of using the control channel region, so the solution of using the downlink control channel region by the new version of the MTC terminal should ensure that the old version of the MTC terminal can work normally, i.e. how to ensure backward compatibility.

In order to solve the above technical problem, embodiments of the present application provide a communication method, and specific details of the communication method may be referred to in the following description.

In order to facilitate understanding of the technical solutions of the present application, first, brief descriptions are provided below for concepts related to embodiments of the present application.

1. Old version MTC terminal and new version MTC terminal

The old version of the MTC terminal specifically refers to the MTC terminal before the Rel-16 version, and the new version of the MTC terminal specifically refers to the Rel-16 version and the MTC terminal after the Rel-16 version. The old version of the MTC terminal does not have the capability of using the LTE control channel region; the new version of the MTC terminal has the capability of using the LTE control channel region.

It should be noted that the old version of the MTC terminal may have different names, such as a legacy UE or a legacy MTC terminal. The new version of the MTC terminal may have a different name, such as a new UE or a new MTC terminal.

2. Repeating transmission

In the MTC network, a transmitting end repeatedly transmits the same data over multiple subframes, and a receiving end combines the data to obtain a higher coverage gain. The current standard specifies that the value range of the repetition times of the MPDCCH is {1,2,4,8, 16, 32, 64, 128, 256}. The number of repetitions of the PDSCH is related to the operation mode of the MTC terminal. If the working mode of the MTC terminal is mode (mode) a, the range of the number of repetitions of the PDSCH is {1,4, 16, 32}; if the operation mode of the MTC terminal is modeB, the value range of the number of repetitions of the PDSCH is {4, 16, 64, 128, 256, 512, 1024, 2048}.

3. Redundancy version (redundancy version, RV)

The current standard specifies 4 redundancy versions, RV0, RV1, RV2, RV3 respectively. When the sending end repeatedly sends the PDSCH, the redundancy version adopted by the PDSCH keeps the same in each redundancy version updating period. The redundancy versions are different in adjacent updating periods, and the updating sequence of the redundancy versions sequentially comprises: RV0, RV2, RV3 and RV1. It should be noted that the starting subframe of the PDSCH corresponding to one transport block is not necessarily aligned with the first subframe in the redundancy version update period. That is, the starting subframe of the PDSCH may be a subframe other than the first subframe, for example, the second subframe, in the redundancy version update period.

With N _acc Indicating the number of continuous subframes contained in a redundancy version update period, and when the working mode of the MTC terminal is modeA, N _acc =1; when the working mode of the MTC terminal is mode b, N is for a Frequency Division Duplex (FDD) system _acc =4, or, for Time Division Duplex (TDD) systems, N _acc ＝10。

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the present application, where "/" denotes "or" unless otherwise stated, for example, a/B may denote a or B. "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" means one or more, "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

Fig. 2 is a schematic diagram of an architecture of an MTC network deployed independently according to an embodiment of the present invention. The MTC network comprises a base station and a plurality of MTC terminals accessing the base station. It should be noted that fig. 2 is only an example, and the number of base stations and MTC terminals in the MTC network is not limited. In the embodiment of the present application, the MTC network may also be an enhanced machine type communication (eMTC) network.

The base stations may have different names, such as access point, evolved node B (eNB). MTC terminals may have different names, such as bandwidth-reduced low-complexity and coverage enhanced (BL/CE) User Equipment (UE). Illustratively, the MTC terminal is a sensing device for data detection, such as a remote water meter, a temperature detection device, and the like.

Fig. 3 is a schematic diagram of hardware structures of a base station and an MTC terminal according to an embodiment of the present disclosure.

The MTC terminal comprises at least one processor 301, at least one memory 302, at least one transceiver 303. Optionally, the MTC terminal may further include an output device 304 and an input device 305.

The processor 301, the memory 302 and the transceiver 303 are connected by a bus. The processor 301 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure. The processor 301 may also include multiple CPUs, and the processor 301 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

The memory 302 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 302 may be a separate device and connected to the processor 301 through a bus. The memory 302 may also be integrated with the processor 301. The memory 302 is used for storing application program codes for executing the scheme of the application, and the processor 301 controls the execution. The processor 301 is configured to execute the computer program code stored in the memory 302, thereby implementing the methods provided by the embodiments of the present application.

The transceiver 303 may use any transceiver or other device for communicating with other devices or communication networks, such as ethernet, radio Access Network (RAN), wireless Local Area Network (WLAN), etc. The transceiver 303 includes a transmitter Tx and a receiver Rx.

The output device 304 is in communication with the processor 301 and may display information in a variety of ways. For example, the output device 304 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 305 is in communication with the processor 301 and may receive user input in a variety of ways. For example, the input device 305 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The base station comprises at least one processor 201, at least one memory 202, at least one transceiver 203 and at least one network interface 204. The processor 201, memory 202, transceiver 203 and network interface 204 are connected by a bus. The network interface 204 is configured to connect with a core network device through a link (e.g., S1 interface), or connect with a network interface of another access network device through a wired or wireless link (e.g., X2 interface) (not shown in the figure), which is not specifically limited in this embodiment of the application. In addition, the description of the processor 201, the memory 202 and the transceiver 203 may refer to the description of the processor 301, the memory 302 and the transceiver 303 in the MTC terminal, and will not be repeated herein.

As shown in fig. 4, a communication method provided for the embodiment of the present application includes the following steps:

s101, the base station maps the data onto the MPDCCH.

Illustratively, the data is a complex number obtained by subjecting the downlink control information to a series of processing such as coding modulation.

In one implementation, the base station performs a series of steps such as channel coding, scrambling, modulation, layer mapping, precoding, etc. on the downlink control information to obtain a complex number, and maps the complex number onto the MPDCCH. For details, reference may be made to the prior art, and details thereof are not repeated in the embodiments of the present application.

S102, the base station repeatedly sends the MPDCCH on n subframes. The subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

The data carried by the OFDM symbols refers to complex modulation symbols.

It should be noted that, since the first region carries the MPDCCH, the second region carries data carried by the OFDM symbols of the first region, in other words, the second region carries a part of data of the MPDCCH.

In the embodiment of the present application, the n subframes refer to a starting subframe carrying the MPDCCH and all following subframes for repeatedly transmitting the MPDCCH. Or, the n subframes refer to a starting subframe carrying the MPDCCH and a part of a subframe after the starting subframe for repeatedly transmitting the MPDCCH. Or, the n subframes refer to a part of subframes for repeatedly transmitting the MPDCCH/PDSCH, which is not limited in this embodiment of the present application.

Optionally, there is a corresponding relationship between the number of the partial OFDM symbol and the sequence number of the subframe in n subframes. As an example, the second region of the subframe with sequence number i in the n subframes is used to carry the subframe with the number satisfying mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

Note that the number of OFDM symbols in the subframe is from 0 to 13. Therefore, if the second region occupies 1 OFDM symbol, the OFDM symbol numbered 0 belongs to the second region, and the OFDM symbols numbered 1 to 13 belong to the first region. If the second region occupies 2 OFDM symbols, the OFDM symbols numbered 0 and 1 belong to the second region, and the OFDM symbols numbered 2 to 13 belong to the first region. If the second region occupies 3 OFDM symbols, the OFDM symbols numbered 0-2 belong to the second region, and the OFDM symbols numbered 3-13 belong to the first region. If the second region occupies 4 OFDM symbols, the OFDM symbols numbered 0-3 belong to the second region, and the OFDM symbols numbered 4-13 belong to the first region.

For example, as shown in fig. 5, assuming that the number of OFDM symbols occupied by the second region on the subframe is 1, the second region of the subframe with sequence number 0 in the n subframes is used to carry data carried by the OFDM symbol with sequence number 1 in the subframe. The second region of the subframe with sequence number 1 is used for carrying data carried by the OFDM symbol with sequence number 2 in the subframe. And by analogy, the second region of the subframe with the sequence number of 12 is used for carrying data carried by the OFDM symbol with the sequence number of 13 in the subframe.

In addition, in this embodiment of the present application, specifically, which OFDM symbol in the first region carries data, is configured by higher layer signaling, or is determined by a base station and a terminal through negotiation, or is defined in a standard. For example, the number of k OFDM symbols in the subframe with the sequence number i in the n subframes is used for bearing that the number in the subframe satisfies mod (i × l) _pdcch +k，M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

For example, assuming that the second region of the subframe occupies 2 OFDM symbols, the OFDM symbol numbered 0 in the subframe numbered 0 in the n subframes carries data carried by the OFDM symbol numbered 2, and the OFDM symbol numbered 1 carries data carried by the OFDM symbol numbered 3.

For example, assuming that the second region of the subframe occupies 3 OFDM symbols, the OFDM symbol numbered 0 in the subframe numbered 1 in the n subframes carries data carried by the OFDM symbol numbered 6, the OFDM symbol numbered 1 carries data carried by the OFDM symbol numbered 7, and the OFDM symbol numbered 2 carries data carried by the OFDM symbol numbered 8.

For example, assuming that the second region of the subframe occupies 4 OFDM symbols, the OFDM symbol numbered 0 in the subframe numbered 0 of the n subframes carries data carried by the OFDM symbol numbered 4, the OFDM symbol numbered 1 carries data carried by the OFDM symbol numbered 5, the OFDM symbol numbered 2 carries data carried by the OFDM symbol numbered 6, and the OFDM symbol numbered 3 carries data carried by the OFDM symbol numbered 7.

S103, the MTC terminal repeatedly receives the MPDCCH on n subframes.

In one implementation, an old version of the MTC terminal repeatedly receives MPDCCH on the first region of n subframes. And the MTC terminal of the new version repeatedly receives the MPDCCH in the first region of the n subframes and receives the data carried by the OFDM symbols of the first region in the second region of the n subframes.

Optionally, the new-version MTC terminal may combine data carried in the second region of the subframe with data carried in part of OFDM symbols of the first region, so as to improve the receiving performance of the new-version MTC terminal on MPDCCH.

And S104, the MTC terminal detects data on the MPDCCH.

Step S104 may refer to the prior art, and is not described herein in detail in this embodiment.

Based on the technical scheme, the base station repeatedly sends the MPDCCH in the first region of the n subframes to ensure that the MTC terminal of the old version can normally receive the MPDCCH. In addition, the base station also sends data carried by part of OFDM symbols in the first region on the second region of the n subframes, that is, the base station sends part of data of MPDCCH on the second region of the n subframes, so that the MTC terminal of the new version can effectively utilize time-frequency resources of the second region of the subframes. In addition, the second regions of at least two subframes in the n subframes bear different part data of the MPDCCH, so that the MTC terminal can receive more data, thereby improving the reception performance.

As shown in fig. 6, a communication method provided for the embodiment of the present application includes the following steps:

s201, the base station maps the data to the PDSCH.

In one implementation, the base station performs a series of steps such as channel coding, scrambling, modulation, layer mapping, and precoding on the information bits to obtain complex data, and maps the complex data to the PDSCH. For details, reference may be made to the prior art, and details thereof are not repeated in the embodiments of the present application.

S202, the base station repeatedly transmits the PDSCH over n subframes. The subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

The data carried by the OFDM symbols refers to complex modulation symbols.

It should be noted that, since the first region carries the PDSCH, the second region carries data carried by the OFDM symbol of the first region, in other words, the second region carries a part of data of the PDSCH.

Optionally, the redundancy version applied to the second region of each of the n subframes is the same as the redundancy version applied to the first region.

In the embodiment of the present application, the n subframes refer to a starting subframe carrying a PDSCH and all subsequent subframes used for repeatedly transmitting the PDSCH. Or, the n subframes refer to a starting subframe carrying the PDSCH and a part of a subframe after the starting subframe for repeatedly transmitting the PDSCH. Alternatively, the n subframes refer to a part of subframes for repeatedly transmitting the PDSCH. For example, the n subframes are the starting subframe and the subframes in which the same redundancy version is applied in all subframes for repeatedly transmitting the PDSCH. The embodiment of the present application does not limit the n subframes.

Illustratively, as shown in fig. 7, assuming that the number of OFDM symbols occupied by the second region on the subframe is 2, the second region of the subframe with sequence number 0 in the n subframes is used to carry data carried by OFDM symbols with

sequence numbers

2 and 3 in the subframe. The second region of the subframe with sequence number 1 is used for carrying data carried by OFDM symbols with

sequence numbers

4 and 5 in the subframe. By analogy, the second region of the subframe with the sequence number 5 is used for carrying data carried by OFDM symbols with the

numbers

12 and 13 in the subframe.

Exemplarily, as shown in fig. 8, assuming that the first region of each of N subframes is used for carrying PDSCH, the N subframes refer to the starting subframe and all the subframes used for repeated transmission thereafter, and N is a number of subframes _acc And =4, if the number of OFDM symbols occupied by the second region in the subframe is 2, the second region of the subframe with a sequence number of 0 in the n subframes is used to carry data carried by OFDM symbols with numbers of 2 and 3 in the subframe. The second region of the subframe with sequence number 1 is used for carrying data carried by OFDM symbols with

sequence numbers

numbers

12 and 13 in the subframe.

For example, as shown in fig. 9, assuming that the first region of each of N subframes is used for carrying PDSCH, the N subframes refer to the starting subframe and the subframe to which RV0 is applied among subframes for repeated transmission, and N is _acc =4, the number of the OFDM symbols occupied by the second region on the subframe is 2, and the second region of the subframe with sequence number 0 in the n subframes is used for carrying data carried by the OFDM symbols with

sequence numbers

numbers

12 and 13 in the subframe.

And S203, the MTC terminal repeatedly receives the PDSCH on n subframes.

In one implementation, an old version of an MTC terminal repeatedly receives a PDSCH over a first region of n subframes. And the MTC terminal of the new version repeatedly receives the PDSCH on the first region of the n subframes, and receives the data carried by the OFDM symbols of the first region on the second region of the n subframes. The new-version MTC terminal may combine data carried in the second region of the subframe with data carried in part of OFDM symbols of the first region, so as to improve the receiving performance of the new-version MTC terminal on the PDSCH.

And S204, the MTC terminal detects data on the PDSCH.

Step S204 may refer to the prior art, and is not described herein in detail in this embodiment.

Based on the technical scheme, the base station repeatedly sends the PDSCH on the first region of the n subframes to ensure that the MTC terminal of the old version can normally receive the PDSCH. In addition, the base station also sends data carried by part of OFDM symbols in the first region on the second region of the n subframes, that is, the base station sends part of data of the PDSCH on the second region of the n subframes, so that the MTC terminal of the new release can effectively utilize time-frequency resources of the second region of the subframes. And the second regions of at least two subframes in the n subframes bear different partial data of the PDSCH, so that the MTC terminal can receive more data to improve the receiving performance.

Currently, some Resource Elements (REs) in a subframe are used to carry reference signals, such as cell-specific reference signals (CRSs). As shown in fig. 10, the black small square and the small square with the dotted line in fig. 10 both represent REs carrying reference signals. The REs used for carrying the reference signals in the subframe cannot be occupied by other data, otherwise, the channel estimation performed by the MTC terminal may be affected. Therefore, if there is an RE for carrying a reference signal on OFDM symbol 2 when the data carried by OFDM symbol 1 is copied to OFDM symbol 2, the data carried by OFDM symbol 1 is punctured to remove the data that should be originally transmitted on the RE, thereby ensuring that the RE can carry the reference signal. As such, OFDM symbol 2 loses a portion of the data compared to the data carried by OFDM symbol 1.

In order to solve the above technical problem, an embodiment of the present application provides a communication method as shown in fig. 11 or fig. 12.

As shown in fig. 11, a communication method provided for the embodiment of the present application includes the following steps:

s301, the base station maps the data to the MPDCCH.

S302, the base station sends the MPDCCH on the subframe. Wherein the subframe comprises a first region and a second region, the first region is used for bearing MPDCCH, and the second region is used for bearing l on the first region _pdcch Data carried by the OFDM symbols; reference signal pattern on the second area and the l _pdcch The reference signal patterns on the OFDM symbols are the same; l _pdcch A number of symbols occupied by the second region.

The reference signal pattern is a position of a time-frequency resource carrying a reference signal.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 2, an OFDM symbol numbered 0 in the subframe carries data carried by an OFDM symbol numbered 7, and an OFDM symbol numbered 1 in the subframe carries data carried by an OFDM symbol numbered 8.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 2, an OFDM symbol numbered 0 in the subframe carries data carried by an OFDM symbol numbered 3, and an OFDM symbol numbered 1 in the subframe carries data carried by an OFDM symbol numbered 4.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 2, an OFDM symbol numbered 0 in the subframe carries data carried by an OFDM symbol numbered 11, and an OFDM symbol numbered 1 in the subframe carries data carried by an OFDM symbol numbered 12.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 3, an OFDM symbol numbered 0 in the subframe carries data carried by an OFDM symbol numbered 7, an OFDM symbol numbered 1 in the subframe carries data carried by an OFDM symbol numbered 8, and an OFDM symbol numbered 2 in the subframe carries data carried by an OFDM symbol numbered 9.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 3, an OFDM symbol numbered 0 in the subframe carries data carried by an OFDM symbol numbered 3, an OFDM symbol numbered 1 in the subframe carries data carried by an OFDM symbol numbered 4, and an OFDM symbol numbered 2 in the subframe carries data carried by an OFDM symbol numbered 5.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 3, the OFDM symbol numbered 0 in the subframe carries data carried by the OFDM symbol numbered 11, the OFDM symbol numbered 1 in the subframe carries data carried by the OFDM symbol numbered 12, and the OFDM symbol numbered 2 in the subframe carries data carried by the OFDM symbol numbered 13.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 4, the OFDM symbol numbered 0 in the subframe carries data carried by the OFDM symbol numbered 7, the OFDM symbol numbered 1 in the subframe carries data carried by the OFDM symbol numbered 8, the OFDM symbol numbered 2 in the subframe carries data carried by the OFDM symbol numbered 9, and the OFDM symbol numbered 3 in the subframe carries data carried by the OFDM symbol numbered 11.

For example, it is assumed that the number of OFDM symbols occupied by the second region in the subframe is 4, the OFDM symbol numbered 0 in the subframe carries data carried by the OFDM symbol numbered 11, the OFDM symbol numbered 1 in the subframe carries data carried by the OFDM symbol numbered 12, the OFDM symbol numbered 2 in the subframe carries data carried by the OFDM symbol numbered 13, and the OFDM symbol numbered 3 in the subframe carries data carried by the OFDM symbol numbered 7.

S303, the MTC terminal receives the MPDCCH on the subframe.

In a possible implementation manner, the new version of the MTC terminal may send data carried in the second region of the subframe to the first region l _pdcch And combining the data carried by the OFDM symbols to improve the receiving performance of the MTC terminal of the new version on the MPDCCH.

S304, the MTC terminal detects data on the MPDCCH.

Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern on each OFDM symbol is the same, so that _pdcch In the process of copying the data carried by one OFDM symbol to the second area,/ _pdcch One OFDM symbolThe data carried by the number need not be punctured. Thus, the data carried by the second area and the data l in the first area _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region in the subframe and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

As shown in fig. 12, a communication method provided for the embodiment of the present application includes the following steps:

s401, the base station maps the data to the PDSCH.

S402, the base station sends PDSCH on the subframe. Wherein the subframe comprises a first region and a second region, the first region is used for carrying a PDSCH, and the second region is used for carrying l on the first region _pdcch Data carried by the OFDM symbols; reference signal pattern on the second area and the l _pdcch The reference signal patterns on the OFDM symbols are the same; l. the _pdcch A number of symbols occupied by the second region.

Step S402 is similar to step S302, and the related description can refer to step S302, which is not repeated herein.

And S403, the MTC terminal receives the PDSCH on the subframe.

S404, the MTC terminal detects data on the PDSCH.

Based on the above technical scheme, the reference signal pattern and l on the second area in the subframe _pdcch The reference signal pattern on each OFDM symbol is the same, so that _pdcch In the process of copying the data carried by one OFDM symbol to the second area,/ _pdcch The data carried by one OFDM symbol need not be punctured. Thus, the data carried by the second area and the data l in the first area _pdcch The data carried by each OFDM symbol is consistent, so that the new-version MTC terminal can conveniently carry the data carried by the second region in the subframe and the data carried by the first region in the subframe _pdcch The data carried by the OFDM symbols are combined.

The above description mainly introduces the scheme provided in the embodiments of the present application from the perspective of the base station and the MTC terminal. It is to be understood that, in order to implement the above functions, the base station and the MTC terminal include hardware structures or software modules corresponding to the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the base station and the MTC terminal may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given by taking the division of each function module corresponding to each function as an example:

fig. 13 is a schematic structural diagram of an access network apparatus according to an embodiment of the present application. As shown in fig. 13, the access network apparatus includes: a processing module 1301 and a sending module 1302. Wherein, the processing module 1301 is configured to support the access network apparatus to perform step S101 in fig. 4, step S201 in fig. 6, step S301 in fig. 11, step S401 in fig. 12, and/or other processes for the technical solution described herein. The sending module 1302 is configured to support the access network apparatus to perform step S102 in fig. 4, step S202 in fig. 6, step S302 in fig. 11, step S402 in fig. 12, and/or other processes for the technical solutions described herein. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

As an example, in conjunction with the base station shown in fig. 3, the sending module 1302 in fig. 13 may be implemented by the communication interface 203 in fig. 3, and the processing module 1301 in fig. 13 may be implemented by the processor 201 in fig. 3, which is not limited in this embodiment.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions; the computer-readable storage medium, when run on the base station shown in fig. 3, causes the terminal to perform the communication method shown in fig. 4, 6, 11, and 12. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium, or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a base station to implement the communication methods shown in fig. 4, fig. 6, fig. 11, and fig. 12. In one possible design, the system-on-chip further includes a memory. The memory is used for storing program instructions and data necessary for the base station. Of course, the memory may not be in the system-on-chip. The chip system may be formed by a chip, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

Embodiments of the present application also provide a computer program product containing computer instructions, which when run on the base station shown in fig. 3, enable a computer to execute the communication methods shown in fig. 4, fig. 6, fig. 11, and fig. 12.

The access network apparatus, the computer storage medium, the chip system and the computer program product provided in the embodiments of the present application are all configured to execute the communication method provided above, and therefore, the beneficial effects that can be achieved by the access network apparatus, the computer storage medium, the chip system and the computer program product are referred to the beneficial effects corresponding to the method provided above, and are not described herein again.

Fig. 14 is a schematic structural diagram of an MTC terminal according to an embodiment of the present application. As shown in fig. 14, the MTC terminal includes: a receiving module 1401 and a processing module 1402. Wherein the receiving module 1401 is configured to support the MTC terminal to execute step S103 in fig. 4, step S203 in fig. 6, step S303 in fig. 11, step S403 in fig. 12, and/or other processes used in the technical solutions described herein. The processing module 1402 is configured to support the MTC terminal to perform step S104 in fig. 4, step S204 in fig. 6, step S304 in fig. 11, step S404 in fig. 12, and/or other processes for the technical solutions described herein. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

As an example, in conjunction with the MTC terminal shown in fig. 3, the receiving module 1401 in fig. 14 may be implemented by the communication interface 303 in fig. 3, and the processor in fig. 14 may be implemented by the processor 301 in fig. 3, which is not limited in this embodiment.

An embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored; when the computer-readable storage medium runs on the MTC terminal shown in fig. 3, the MTC terminal is caused to perform the communication method as shown in fig. 4, 6, 11, and 12.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support an MTC terminal to implement the communication methods shown in fig. 4, fig. 6, fig. 11, and fig. 12. In one possible design, the system-on-chip further includes a memory. The memory is used for storing necessary program instructions and data of the MTC terminal. Of course, the memory may not be in the system-on-chip. The chip system may be formed by a chip, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

Embodiments of the present application further provide a computer program product containing computer instructions, which when run on the MTC terminal shown in fig. 3, enable a computer to execute the communication methods shown in fig. 4, fig. 6, fig. 11, and fig. 12.

The MTC terminal, the computer storage medium, the chip system, and the computer program product provided in the embodiments of the present application are all configured to execute the communication method provided above, and therefore, the beneficial effects achieved by the MTC terminal, the computer storage medium, the chip system, and the computer program product may refer to the beneficial effects corresponding to the method provided above, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

mapping data to a machine type physical downlink control channel (MPDCCH);

repeatedly transmitting the MPDCCH over n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

2. The communication method according to claim 1, wherein the second region of the n subframes with sequence number i is used to carry the subframe number satisfying mod (i x l) _pdcch +k,M-l _pdcch )+l _pdcch Is OFDM symbolThe data carried by the number; wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

3. A method of communication, the method comprising:

repeatedly receiving a machine type physical downlink control channel (MPDCCH) on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more;

detecting data on the MPDCCH.

4. A communication method according to claim 3, wherein the second region of the n subframes with sequence number i is used to carry the subframe number satisfying mod (i x l) _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

5. A method of communication, the method comprising:

mapping data to a Physical Downlink Shared Channel (PDSCH);

repeatedly transmitting the PDSCH over n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the PDSCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

6. The communication method according to claim 5, wherein the second region of the n subframes with sequence number i is used to carry the subframe number satisfying mod (i x l) _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

7. A method according to claim 5 or 6, wherein the same redundancy version is applied to the first region of each of the n sub-frames.

8. The communication method according to claim 5 or 6, wherein the redundancy version applied to the second area of each of the n subframes is the same as the redundancy version applied to the first area.

9. A method of communication, the method comprising:

repeatedly receiving a Physical Downlink Shared Channel (PDSCH) on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the PDSCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more;

detecting data on the PDSCH.

10. The communication method according to claim 9, wherein the second region of the n subframes with sequence number i is used to carry the subframe number satisfying mod (i x l) _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is an OFDM symbol contained in one sub-frameThe number of (2).

11. A method according to claim 9 or 10, wherein the same redundancy version is applied to the first region of each of the n subframes.

12. The communication method according to claim 9 or 10, wherein the redundancy version applied to the second area of each of the n subframes is the same as the redundancy version applied to the first area.

13. An access network apparatus, comprising:

the processing module is used for mapping the data to a machine type physical downlink control channel (MPDCCH);

a transmitting module, configured to repeatedly transmit the MPDCCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

14. The access network apparatus of claim 13, comprising: the second region of the subframe with the sequence number i in the n subframes is used for bearing the condition that the number in the subframe meets mod (i multiplied by l) _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

15. A terminal, comprising:

the receiving module is used for repeatedly receiving the machine type physical downlink control channel (MPDCCH) on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the MPDCCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data loaded by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more;

and the processing module is used for detecting the data on the MPDCCH.

16. The terminal of claim 15, wherein a second region of a subframe with sequence number i from the n subframes is used to carry information with a number mod (i x l) in the subframe _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

17. An access network apparatus, comprising:

a processing module, configured to map data to a physical downlink shared channel PDSCH;

a transmitting module, configured to repeatedly transmit the PDSCH over n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the PDSCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more.

18. The access network apparatus of claim 17, wherein a second region of the n subframes with sequence number i is used to carry the subframe number satisfying mod (i x l) _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbols of (a); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

19. The access network apparatus of claim 17 or 18, wherein the first region of each of the n subframes applies the same redundancy version.

20. The access network apparatus of claim 17 or 18, wherein the redundancy version applied to the second region of each of the n subframes is the same as the redundancy version applied to the first region.

21. A terminal, comprising:

a receiving module, configured to repeatedly receive a physical downlink shared channel PDSCH on n subframes; the subframe comprises a first region and a second region, wherein the first region is used for carrying the PDSCH, and the second region is used for carrying data carried by a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the first region; the data carried by the second areas of at least two subframes in the n subframes are different; n is an integer of 2 or more;

a processing module for detecting data on the PDSCH.

22. The terminal of claim 21, wherein a second region of a subframe with sequence number i in the n subframes is used to carry information with number mod (i × l) in the subframe _pdcch +k,M-l _pdcch )+l _pdcch Data carried by the OFDM symbol of (1); wherein i =0,1, …, n-1; k =0,1, …, l _pdcch -1；l _pdcch Indicating the number of OFDM symbols occupied by the second region; m is the number of OFDM symbols included in one subframe.

23. The terminal according to claim 21 or 22, wherein the same redundancy version is applied to the first region of each of the n subframes.

24. The terminal according to claim 21 or 22, wherein the redundancy version applied to the second region of each of the n subframes is the same as the redundancy version applied to the first region.

25. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the communication method of any one of claims 1-2, 5-8.

26. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the communication method of any one of claims 3-4, 9-12.