CN110545556A

CN110545556A - MAC CE, information sending method, information receiving method and communication equipment

Info

Publication number: CN110545556A
Application number: CN201810520936.5A
Authority: CN
Inventors: 孙军帅; 王莹莹; 黄学艳; 韩星宇
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2019-12-06
Anticipated expiration: 2038-05-28
Also published as: CN110545556B

Abstract

The invention provides an MAC CE, an information sending method, an information receiving method and communication equipment, wherein the information sending method comprises the following steps: and transmitting the MAC CE, wherein the MAC CE comprises the HARQ process information. Compared with the scheme that each minimum PDCCH carries the HARQ process information sent at the current time, the scheme of the invention can compress the content carried by the minimum PDCCH, thereby reducing the use of the PDCCH and reducing the conflict of the PDCCH.

Description

MAC CE, information sending method, information receiving method and communication equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a Media Access Control (MAC) Control unit (CE), an information sending method, an information receiving method, and a communication device.

Background

Currently, a fifth Generation mobile communication technology (5th-Generation, 5G) proposes a configuration scheme of a Physical Downlink Control Channel (PDCCH), that is, the common PDCCH may be sent in two parts, one part is common Downlink Control Information (DCI), and the other part is a minimum PDCCH for a single user, and the two parts of PDCCH form resource allocation and scheduling within a time period. Specifically, the common PDCCH may configure resources within a certain time period, and then perform real-time scheduling on the resources of each time through the minimum PDCCH, for example, each minimum PDCCH may carry Hybrid Automatic Repeat reQuest (HARQ) process information or HARQ parallel process information that is currently transmitted.

However, each minimum PDCCH carries HARQ process information currently transmitted, so that the usage of the PDCCH can be increased, and the collision of the PDCCH can be increased.

disclosure of Invention

The embodiment of the invention provides an MAC CE, an information sending method, an information receiving method and communication equipment, and aims to solve the problems that in the conventional public PDCCH, the use of the PDCCH is increased and the PDCCH conflict is improved because each minimum PDCCH carries HARQ process information sent at the current time.

In order to solve the above problem, in a first aspect, an embodiment of the present invention provides a MAC CE, where the MAC CE includes HARQ process information.

In a second aspect, an embodiment of the present invention provides an information sending method, applied to a sender, including:

And transmitting the MAC CE, wherein the MAC CE comprises HARQ process information.

In a third aspect, an embodiment of the present invention provides an information receiving method, applied to a receiving side, including:

And receiving the MAC CE, wherein the MAC CE comprises HARQ process information.

in a fourth aspect, an embodiment of the present invention provides a communication device, which is applied to a sender and includes a sender;

The transmitter is configured to: and transmitting the MAC CE, wherein the MAC CE comprises HARQ process information.

In a fifth aspect, an embodiment of the present invention provides a communication device, which is applied to a receiving side and includes a receiver;

The receiver is configured to: and receiving the MAC CE, wherein the MAC CE comprises HARQ process information.

in a sixth aspect, an embodiment of the present invention provides a communication device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, may implement the steps of the above-mentioned information sending method or the steps of the above-mentioned information receiving method.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the steps of the above-mentioned information sending method or the steps of the above-mentioned information receiving method.

in the embodiment of the invention, as the MAC CE comprises the HARQ process information, compared with the method that each minimum PDCCH carries the HARQ process information sent at the current time, the method can compress the content carried by the minimum PDCCH, thereby reducing the use of the PDCCH and reducing the conflict of the PDCCH.

Drawings

in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a diagram of a MAC CE according to an embodiment of the present invention;

Fig. 2 is a schematic configuration diagram of a MAC CE according to an embodiment of the present invention;

Fig. 3 is a flowchart of an information sending method according to an embodiment of the present invention;

Fig. 4 is a flowchart of an information receiving method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

Fig. 6 is a second schematic structural diagram of a communication device according to an embodiment of the present invention;

fig. 7 is a third schematic structural diagram of a communication device according to an embodiment of the present invention.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is first pointed out that, in order to compress the content carried by the minimum PDCCH, the embodiment of the present invention provides a new MAC CE, where the MAC CE includes HARQ process information (or HARQ parallel process information). Therefore, compared with the method that HARQ process information sent at the current time is carried in each minimum PDCCH, the content carried by the minimum PDCCH can be compressed, the use of the PDCCH is reduced, and the conflict of the PDCCH is reduced.

In particular implementation, the type of the MAC CE may be defined in the MAC protocol. The specific value of the index or the identification ID of the MAC CE may be planned in a unified manner according to a protocol.

optionally, the MAC CE in the embodiment of the present invention may be an uplink MAC CE or a downlink MAC CE. When the MAC CE is an uplink MAC CE, the HARQ process information contained in the MAC CE is uplink HARQ process information; or, when the MAC CE is a downlink MAC CE, the HARQ process information included therein is downlink HARQ process information.

For example, see table 1 and table 2 below, where table 1 is a logical channel identification value (Values of LCID for DL-SCH) of the downlink shared channel, and table 2 is a logical channel identification value (Values of LCID for UL-SCH) of the uplink shared channel, and tables 1 and 2 are given based on the 38.321 protocol.

TABLE 1

TABLE 2

as can be seen from tables 1 and 2 above: the uplink MAC CE may include uplink HARQ process information, and the downlink MAC CE may include downlink HARQ process information. The specific value of the index of the uplink HARQ process information or the downlink HARQ process information may be planned in a unified manner according to a protocol, which is not limited in the embodiments of the present invention.

Optionally, the HARQ Process information in the embodiment of the present invention at least includes a HARQ Process Number (HARQ Process Number). Optionally, the HARQ Process number may be a HARQ Process identification (HARQ Process ID) or a HARQ Process Index (HARQ Process Index).

Further, the HARQ process information may further include at least one of:

New Data Index (NDI), Redundancy Version (RV), HARQ mode, and the like.

Wherein the mode of the HARQ may be synchronous or asynchronous. It is understood that, for those skilled in the art, the content included in the HARQ process information may not be limited to the above content, and may be correspondingly extended according to the actual situation, which all belong to the claimed content of the present invention.

For example, the format of the MAC CE in the embodiment of the present invention may be as shown in fig. 1, and the HARQ Process information included in the MAC CE shown in fig. 1 may include a Process Number (i.e., HARQ Process Number), an NDI, and an RV; wherein the length of the Process Number is 4bits, the length of the NDI is 1bit, and the length of the RV is 2 bits.

Optionally, the MAC CE in the embodiment of the present invention may be included in a MAC Protocol Data Unit (PDU). Further, the MAC CE may have a fixed length or a variable length. Further, the index or ID of the MAC CE may be included in a subheader of the corresponding MAC PDU.

For example, referring to fig. 2, fig. 2 is a schematic configuration diagram of a MAC CE according to an embodiment of the present invention. In fig. 2, the MAC CE is included in a MAC sub pdu, the MAC CE has a Fixed length (Fixed Sized), and an index or ID of the MAC CE is included in a sub-header of the MAC sub pdu, that is, the LCID in fig. 2 is the index or ID of the MAC CE. Note that, the MAC sub PDU is the MAC PDU described above.

Referring to fig. 3, an embodiment of the present invention further provides an information sending method, which is applied to a sender, and includes the following steps:

Step 301: and transmitting the MAC CE, wherein the MAC CE comprises HARQ process information.

it can be understood that the sender in the embodiment of the present invention may be a network side device, and may also be a terminal side device. Specifically, when the sender is a network side device, the MAC CE sent by the sender is a downlink MAC CE, and HARQ process information included in the downlink MAC CE is downlink HARQ process information; and when the sender is a terminal side device, the MAC CE sent by the sender is an uplink MAC CE, and HARQ process information included in the uplink MAC CE is uplink HARQ process information.

according to the information sending method provided by the embodiment of the invention, the HARQ process information is carried by the MAC CE, and compared with the condition that the currently sent HARQ process information is carried in each minimum PDCCH, the content carried by the minimum PDCCH can be compressed, so that the use of the PDCCH is reduced, and the conflict of the PDCCH is reduced.

Optionally, the MAC CE in the embodiment of the present invention may be carried in a MAC PDU for transmission. Further, when the MAC CE is carried in the MAC PDU for transmission, the MAC CE may be configured with a header or a trailer of the MAC PDU. Thus, after receiving the MAC CE, the receiver can decode and parse the MAC CE to obtain the corresponding HARQ process information before decoding the MAC SDU in the MAC PDU, and then decode and parse the corresponding MAC SDU according to the HARQ process information, thereby reducing the complexity of the process control.

Optionally, in the embodiment of the present invention, the sending time of the MAC CE may be earlier than the sending time of the MAC SDU corresponding to the MAC CE in the MAC PDU by a preset time interval, that is, the MAC CE and the MAC SDU corresponding to the MAC CE are isolated from each other in time-frequency domain resources to some extent. Therefore, the receiving party can receive the MAC CE before receiving the MAC SDU, and decode and analyze the corresponding MAC SDU according to the HARQ process information included in the MAC CE, thereby reducing the complexity of flow control.

Further, the HARQ process information may further include at least one of:

New Data Index (NDI), Redundancy Version (RV), HARQ mode, and the like.

Referring to fig. 4, an embodiment of the present invention further provides an information receiving method, which is applied to a receiving side, and includes the following steps:

Step 401: and receiving the MAC CE, wherein the MAC CE comprises HARQ process information.

It can be understood that the receiver in the embodiment of the present invention may be a network side device, and may also be a terminal side device. Specifically, when the receiving side is a network side device, the MAC CE received by the receiving side is an uplink MAC CE, and HARQ process information included in the uplink MAC CE is uplink HARQ process information; and when the receiving party is terminal side equipment, the received MAC CE is a downlink MAC CE, and the HARQ process information included by the downlink MAC CE is downlink HARQ process information.

According to the information receiving method provided by the embodiment of the invention, the HARQ process information is carried by the MAC CE, and compared with the condition that the currently transmitted HARQ process information is carried in each minimum PDCCH, the content carried by the minimum PDCCH can be compressed, so that the use of the PDCCH is reduced, and the conflict of the PDCCH is reduced.

optionally, after step 401, the information receiving method according to the embodiment of the present invention may further include:

processing the received MAC CE to obtain HARQ process information;

and processing the MAC SDU corresponding to the MAC CE according to the HARQ process information.

It should be noted that if the MAC CE is lost during transmission, i.e. the HARQ process information included therein, such as NDI and RV, does not meet the requirement of continuous transmission sequence, the receiver should have fault-tolerant capability.

Further, the HARQ process information may further include at least one of:

New Data Index (NDI), Redundancy Version (RV), HARQ mode, and the like.

The above embodiments describe the information transmission method and the information reception method of the present invention, and the communication device of the present invention will be described with reference to the embodiments and the drawings.

Referring to fig. 5, an embodiment of the present invention further provides a communication device, which is applied to a sender and includes a processor 51, a sender 52 and a receiver 53.

Wherein the transmitter 52 is configured to: and transmitting the MAC CE, wherein the MAC CE comprises the HARQ process information.

It can be understood that the communication device in the embodiment of the present invention may be a network side device, and may also be a terminal side device. Specifically, when the communication device is a network side device, the MAC CE sent by the communication device is a downlink MAC CE, and HARQ process information included in the downlink MAC CE is downlink HARQ process information; when the communication device is a terminal side device, the MAC CE transmitted by the communication device is an uplink MAC CE, and HARQ process information included in the uplink MAC CE is uplink HARQ process information.

According to the communication equipment provided by the embodiment of the invention, the HARQ process information is carried by the MAC CE, and compared with the condition that the HARQ process information sent at the current time is carried in each minimum PDCCH, the content carried by the minimum PDCCH can be compressed, so that the use of the PDCCH is reduced, and the conflict of the PDCCH is reduced.

In the embodiment of the present invention, optionally, the MAC CE is carried in a MAC PDU and transmitted;

or the transmission time of the MAC CE is earlier than the transmission time of the MAC SDU corresponding to the MAC CE in the MAC PDU by a preset time interval.

Optionally, when the MAC CE is carried in a MAC PDU for transmission, the MAC CE is configured at the head or the tail of the MAC PDU.

Optionally, the HARQ process information at least includes a HARQ process number.

Optionally, the HARQ process information further includes at least one of the following: NDI, RV, and HARQ modes.

in FIG. 5, a bus architecture (represented by bus 50), bus 50 may include any number of interconnected buses and bridges, with bus 50 connecting together various circuits including one or more processors, represented by processor 51, and memory, represented by memory 54. The transmitter 52 and the receiver 53 may be a transceiver interface, and the transmitter 52 and the receiver 53 may be connected to the processor 51 and the memory 54 via the bus 50.

The processor 51 is responsible for managing the bus 50 and general processing, while the memory 54 may be used for storing data used by the processor 51 in performing operations.

referring to fig. 6, an embodiment of the present invention further provides a communication device, which is applied to a receiving side and includes a processor 61, a transmitter 62, and a receiver 63.

Wherein the receiver 63 is configured to: and receiving the MAC CE which comprises the HARQ process information.

It can be understood that the communication device in the embodiment of the present invention may be a network side device, and may also be a terminal side device. Specifically, when the communication device is a network side device, the MAC CE received by the communication device is an uplink MAC CE, and HARQ process information included in the uplink MAC CE is uplink HARQ process information; when the communication device is a terminal side device, the received MAC CE is a downlink MAC CE, and HARQ process information included in the downlink MAC CE is downlink HARQ process information.

In this embodiment of the present invention, optionally, the processor 61 is configured to: and processing the MAC CE to obtain the HARQ process information, and processing the MAC SDU corresponding to the MAC CE according to the HARQ process information.

In FIG. 6, a bus architecture (represented by bus 60), bus 60 may include any number of interconnected buses and bridges, with bus 60 connecting together various circuits including one or more processors, represented by processor 61, and memory, represented by memory 64. The transmitter 62 and the receiver 63 may be a transceiver interface, and the transmitter 62 and the receiver 63 may be connected to the processor 61 and the memory 64 through the bus 60.

The processor 61 is responsible for managing the bus 60 and general processing, while the memory 64 may be used for storing data used by the processor 61 in performing operations.

In addition, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, may implement each process of the above-mentioned information sending method embodiment or each process of the above-mentioned information receiving method embodiment, and may achieve the same technical effect, and in order to avoid repetition, it is not described here again. The communication device may be a network side device or a terminal side device.

Specifically, referring to fig. 7, the embodiment of the present invention further provides a communication device, which includes a bus 71, a transceiver 72, an antenna 73, a bus interface 74, a processor 75, and a memory 76. The communication device may be a network side device or a terminal side device. The communication device may be a sender or a receiver.

in an embodiment of the present invention, the communication device further includes: a computer program stored on the memory 76 and executable on the processor 75.

In particular, when the communication device is the sender, the computer program may be adapted to perform the following steps when executed by the processor 75:

When the communication device is the recipient, the computer program when executed by the processor 75 may implement the steps of:

In fig. 7, a bus architecture (represented by bus 71), bus 71 may include any number of interconnected buses and bridges, bus 71 linking together various circuits including one or more processors, represented by processor 75, and memory, represented by memory 76. The bus 71 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 74 provides an interface between the bus 71 and the transceiver 72. The transceiver 72 may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 75 is transmitted over a wireless medium via the antenna 73, and further, the antenna 73 receives the data and transmits the data to the processor 75.

The processor 75 is responsible for managing the bus 71 and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 76 may be used to store data used by the processor 75 in performing operations.

Alternatively, the processor 75 may be a CPU, ASIC, FPGA or CPLD.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when being executed by a processor, the computer program may implement each process of the above-mentioned information sending method embodiment or each process of the above-mentioned information receiving method embodiment, and may achieve the same technical effect, and is not described herein again to avoid repetition.

Computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A media access control layer control unit MAC CE is characterized in that the MAC CE comprises hybrid automatic repeat request HARQ process information.

2. The MAC CE of claim 1, wherein the HARQ process information comprises a HARQ process number.

3. the MAC CE of claim 2, wherein the HARQ process number is a HARQ process identification ID, or a HARQ process index.

4. The MAC CE of claim 2, wherein the HARQ process information further comprises at least one of:

New transmission or retransmission data index NDI, redundancy version RV, and HARQ mode.

5. The MAC CE of claim 1, wherein the MAC CE is included in a MAC protocol data unit PDU.

6. the MAC CE of claim 5, wherein the MAC CE has a fixed length or a variable length.

7. The MAC CE according to claim 5, wherein the index or ID of the MAC CE is included in a subheader of the MAC PDU.

8. The MAC CE of any one of claims 1 to 7, wherein when the MAC CE is an uplink MAC CE, the HARQ process information is uplink HARQ process information;

Or, when the MAC CE is a downlink MAC CE, the HARQ process information is downlink HARQ process information.

9. an information sending method applied to a sender is characterized by comprising the following steps:

10. The method of claim 9, wherein the MAC CE is carried in a MAC PDU for transmission; or

And the transmission time of the MAC CE is earlier than the transmission time of the MAC SDU corresponding to the MAC CE in the MAC PDU by a preset time interval.

11. The method of claim 10 wherein the MAC CE is configured at a head or tail of the MAC PDU when the MAC CE is carried in the MAC PDU for transmission.

12. The method of claim 9, wherein the HARQ process information comprises a HARQ process number.

13. The method of claim 12, wherein the HARQ process information further comprises at least one of: NDI, RV, and HARQ modes.

14. an information receiving method applied to a receiving side, comprising:

15. The method of claim 14, wherein after receiving the MAC CE, the method further comprises:

Processing the MAC CE to obtain the HARQ process information;

16. The method of claim 14, wherein the HARQ process information comprises a HARQ process number.

17. The method of claim 16, wherein the HARQ process information further comprises at least one of: NDI, RV, and HARQ modes.

18. A communication device, applied to a sender, comprising a sender;

19. The communications device of claim 18, wherein the MAC CE is carried in a MAC PDU for transmission; or

20. The communications device of claim 19, wherein the MAC CE is configured at a header or a trailer of the MAC PDU when the MAC CE is carried in a MAC PDU for transmission.

21. The communications device of claim 18, wherein the HARQ process information includes a HARQ process number.

22. The communications device of claim 21, wherein the HARQ process information further comprises at least one of: NDI, RV, and HARQ modes.

23. A communication device, for use at a receiving party, comprising a receiver;

24. The communication device of claim 23, wherein the communication device further comprises a processor;

The processor is configured to: and processing the MAC CE to obtain the HARQ process information, and processing the MAC SDU corresponding to the MAC CE according to the HARQ process information.

25. The communications device of claim 23, wherein the HARQ process information comprises a HARQ process number.

26. The communications device of claim 25, wherein the HARQ process information further comprises at least one of: NDI, RV, and HARQ modes.

27. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program realizes the steps of the information transmission method according to any one of claims 9 to 13 or the steps of the information reception method according to any one of claims 14 to 17 when executed by the processor.

28. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the information transmission method according to any one of claims 9 to 13 or the steps of the information reception method according to any one of claims 14 to 17.