WO2021007827A1 - Information indication and determination methods and apparatuses, communication device and storage medium - Google Patents

Abstract

The present application discloses information indication and determination methods and apparatuses, a communication device and a storage medium. The information indication method comprises: issuing joint indication information according to a mapping relationship between the number of retransmissions of a transmission block (TB) and a modulation coding strategy (MCS), the joint indication information being used for indicating the number of retransmissions of the scheduled TB and the MCS by indicating the mapping relationship.

Description

Information indication and determination method and device, communication equipment and storage medium Technical field

This application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to a method and device for information indication and determination, communication equipment and storage medium.

Background technique

Machine Type Communication (MTC, Machine Type Communication) is a typical representative of cellular IoT technology. At present, MTC technology has been widely used in smart cities, such as meter reading; smart agriculture, such as the collection of information such as temperature and humidity; smart transportation, such as shared bicycles and many other fields. A terminal applying MTC technology can be called an MTC terminal.

However, in the scheduling process of information transmission by the MTC terminal, it is found that there is a problem of large signaling overhead.

Summary of the invention

The embodiment of the application discloses an information indication and determination method and device, communication equipment and storage medium.

The first aspect of the embodiments of the present application provides an information indication method, which is applied in a base station, and includes:

According to the number of repeated transmissions of (Transmission Block, TB) and the mapping relationship between Modulation Coding Strategy (MCS), joint indication information is issued. The joint indication information is used to indicate the mapping Relationship, indicating the number of repeated transmissions of the scheduled TB and at the same time indicating the MCS.

The second aspect of the embodiments of the present application provides an information determination method, which is applied to a terminal, and includes:

Receive joint instruction information;

According to the mapping relationship indicated by the joint indication information, the number of repeated transmissions of the transport block TB is determined, and the modulation and coding strategy MCS is determined.

A third aspect of the embodiments of the present application provides an information indicating device, including:

The issuing module is configured to issue joint indication information according to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS, where the joint indication information is used to indicate the mapping relationship, Indicate the number of repeated transmissions of the scheduled TB and indicate the MCS at the same time.

A fourth aspect of the embodiments of the present application provides an information determining device, which includes:

The receiving module is configured to receive joint indication information;

The determining module is configured to determine the number of repeated transmissions of the transmission block TB according to the mapping relationship indicated by the joint indication information, and determine the modulation and coding strategy MCS.

A fifth aspect of the embodiments of the present application provides a communication device, including:

antenna;

Memory

The processor is respectively connected to the antenna and the memory, and is configured to execute computer-executable instructions stored on the memory, control the transmission and reception of the antenna, and be able to implement what is provided by the first aspect and/or the second aspect method.

A sixth aspect of the embodiments of the present application provides a computer storage medium that stores computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the methods provided in the first aspect and/or the second aspect .

In the technical solution provided by the embodiments of the present application, when the number of repeated transmissions and MCS are indicated, different information fields in DCI are no longer used to indicate the number of repeated transmissions and MCS respectively. Instead, joint indication information is used to indicate the number of repeated transmissions. It also informs the terminal base station of the number of repeated transmissions of the TB configured for it and the MCS, so that the indication can be completed by using only one joint indication information, which reduces the signaling overhead.

Description of the drawings

FIG. 1 is a schematic structural diagram of a wireless system provided by an embodiment of this application;

2 is a schematic flowchart of an information indication method provided by an embodiment of this application;

FIG. 3 is a schematic diagram of an indication of an MPDCCH message of an MTC terminal according to an embodiment of the application;

FIG. 4 is a schematic flowchart of another information indication method provided by an embodiment of the application;

FIG. 5 is a schematic flowchart of an information determination method provided by an embodiment of this application;

FIG. 6 is a schematic structural diagram of an information indicating device provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of another information determining device provided by an embodiment of this application;

FIG. 8 is a schematic structural diagram of a terminal provided by an embodiment of this application;

FIG. 9 is a schematic structural diagram of a base station provided by an embodiment of this application.

Detailed ways

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network architecture With the evolution of and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

Please refer to FIG. 1, which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present application. As shown in FIG. 1, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include several terminals 110 and several base stations 120.

Wherein, the terminal 110 may be a device that provides voice and/or data connectivity to the user. The terminal 110 can communicate with one or more core networks via a radio access network (RAN). The terminal 110 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or “cellular” phone), and The computer of the Internet of Things terminal, for example, may be a fixed, portable, pocket-sized, handheld, computer built-in device, or a vehicle-mounted device. For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment, UE). Alternatively, the terminal 110 may also be a device of an unmanned aerial vehicle. Alternatively, the terminal 110 may also be an in-vehicle device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device connected to the trip computer. Alternatively, the terminal 110 may also be a roadside device, for example, it may be a street lamp, signal lamp, or other roadside device with a wireless communication function.

The base station 120 may be a network side device in a wireless communication system. Among them, the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as the new radio (NR) system or 5G NR system. Alternatively, the wireless communication system may also be the next-generation system of the 5G system. Among them, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).

Wherein, the base station 120 may be an evolved base station (eNB) used in a 4G system. Alternatively, the base station 120 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system. When the base station 120 adopts a centralized and distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer. A physical (Physical, PHY) layer protocol stack is provided in the unit, and the embodiment of the present application does not limit the specific implementation manner of the base station 120.

A wireless connection can be established between the base station 120 and the terminal 110 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; or, the wireless air interface may also be a wireless air interface based on 5G-based next-generation mobile communication network technology standards.

In some embodiments, an E2E (End to End) connection may also be established between the terminals 110. For example, V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication and V2P (vehicle to pedestrian) communication in vehicle to everything (V2X) communication Waiting for the scene.

In some embodiments, the above-mentioned wireless communication system may further include a network management device 130.

Several base stations 120 are connected to the network management device 130 respectively. The network management device 130 may be a core network device in a wireless communication system. For example, the network management device 130 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME). Alternatively, the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), policy and charging rules function unit (Policy and Charging Rules). Function, PCRF) or Home Subscriber Server (HSS), etc. The implementation form of the network management device 130 is not limited in the embodiment of the present application.

As shown in FIG. 2, this embodiment provides an information indication method, including:

According to the number of repeated transmissions of the TB and the mapping relationship with the MCS, joint indication information is issued, where the joint indication information is used to indicate the mapping relationship to indicate the number of repeated transmissions of the scheduled TB and indicate the MCS at the same time.

The information indication method provided in this embodiment can be applied to a base station. The TB here is a kind of content block; different TBs contain different data content. The TB here may be the transport block proposed in the MTC technology. Before the MTC terminal uses the TB for data transmission, it can use the MTC Physical Downlink Control Channel (MPDCCH) to schedule TB transmission, for example, use the Downlink Control Information (DCI) issued by the MPDCCH to indicate the TB , The number of TBs and the number of repeated transmissions of a TB.

In this embodiment, the number of repeated transmissions can be any positive integer. Through the configuration of the number of repeated transmissions, the number of repeated transmissions for a TB is determined, and the reliability of transmission can be ensured by repeated transmission. In this way, when a transmission is unsuccessful, the TB can be successfully received through repeated transmissions; for another example, when the corresponding TB is not completely successfully received in one transmission, multiple receptions of repeated transmissions and joint decoding can be used to ensure the TB Transmission success rate.

The base station pre-configures the number of repeated transmissions of the TB and the mapping relationship between the MCS; or, pre-prescribes the number of repeated transmissions of the TB and the mapping relationship between the MCS in the communication protocol.

This mapping relationship can also be sent to the terminal by the base station.

In some embodiments, the number of repeated transmissions of TB and MCS are indicated by using different information fields, and the number of bits occupied by each information field is related to the number of candidates for the number of repeated transmissions of TB and the backup of MCS. The number is relevant. For example, the M1 bit is used to indicate the number of repeated transmissions, and the M2 bit is used to indicate the MCS, so that a total of at least M1+M2 bits are consumed. In this embodiment, the joint indication information indicates the mapping relationship between the number of repeated transmissions of the TB and the MCS. For example, N (N is less than M1+M2) bits can be used to indicate all the mapping relationships, and the terminal After receiving the N-bit joint indication information, the number of repeated transmissions and MCS indicated by the base station can be determined at the same time, thereby reducing signaling overhead.

Table 1 is a mapping relationship between joint indication information, repeated transmission times, repeated transmission times, and MCS:

Joint instructions	MCS grade number	Repeat transmission times
00000	0	R1
00001	0	R2
00010	1	R1
00011	1	R2
00100	2	R1
00101	2	R2
00110	3	R1
00111	3	R2
01000	4	R2
01001	4	R3
01010	5	R2
01011	5	R3
01100	6	R2
01101	6	R3
01110	7	R2
01111	7	R3
10000	8	R3
10001	8	R4
10010	9	R3
10011	9	R4
10100	10	R3
10101	10	R4
10110	11	R3
10111	11	R4
11000	12	R3
11001	12	R4
11010	13	R3

11011	13	R4
11100	14	R3
11101	14	R4
11110	15	R3
11111	15	R4

Table 1

The number of repeated transmissions R1, R2, R3, and R4 in Table 1 can be any positive integer.

In some embodiments, R1, R2, R3, and R4 increase sequentially.

If the mapping relationship between the number of repeated transmissions and the MCS in Table 1 is adopted, so only 5 bits are needed to simultaneously complete the indication of the number of repeated transmissions and the MCS level.

In this embodiment, the TB may be the TB allocated to the MTC terminal. In this embodiment, it is considered that most of the MTC terminals are indoors and other places where the network coverage conditions are not good. At the same time, compared to non-MTC terminals (for example, mobile phone terminals, etc.), MTC terminals have relatively weak processing capabilities. equipment. Therefore, it is necessary to enhance the coverage of the MTC terminal. For example, the same content is repeatedly transmitted in multiple transmission time units, and the receiving end (for example, the MTC terminal) performs information recovery in conjunction with the repeatedly transmitted content. The number of repeated transmissions is generally set according to channel conditions. The worse the channel condition, the greater the number of repeated transmissions.

Specifically, MTC has two coverage enhancement modes, coverage enhancement mode A and coverage enhancement mode B.

Coverage enhancement mode A is used when channel conditions are good, so the number of repetitive transmissions that can be supported under coverage enhancement mode A is relatively small.

Coverage enhancement mode B is usually applied to poor channel conditions, so the number of repeated transmissions that can be supported is relatively large.

In the two coverage increase modes, the base station first configures multiple optional repeated transmission times for the terminal through high-layer signaling (for example, RRC signaling), for example, configures 4 optional repeated transmission times. The base station will set an appropriate number of repeated transmissions among multiple candidate repeated transmissions according to the user's current channel conditions and MCS selection, and indicate in the DCI. The high-level signaling here may be signaling above the physical layer, for example, through media access control (MAC) layer signaling or radio resource control (RRC) signaling layer signaling.

The MTC terminal supports different modulation and demodulation schemes to deal with different channel scenarios. For example, in MTC coverage enhancement mode A, 16 MCSs are supported. The 16 types of MCS can carry different numbers of bits in different resource allocations.

In Table 2, I _MCS is the number of the MCS level, and I _TBS is the number of the corresponding TBS. N _PRB is the number of physical resources allocated to the user. The numbers in Table 2 indicate the bits of information carried by the data blocks transmitted under different modulation and coding schemes and different resource configurations. For example, when I _MCS is 9 and N _PRB is 6, the size of the corresponding data block is 936.

Table 2

The transmission block set (Transmission Block Set, TBS) in Table 2 refers to the combination of PRB allocation and MCS level.

One MPDCCH message of the MTC terminal can be used to schedule a physical downlink shared channel (MPDSCH) or physical uplink shared channel (PUSCH) of an MTC terminal. The MTC terminal needs to receive and blindly check the MPDCCH before receiving or sending data. When the MTC terminal sends or a data packet with a large amount of data, it needs several rounds of scheduling to complete.

In most cases, due to similar channel conditions, the scheduling content of several MPDCCHs are similar. Even in this case, the terminal still needs to demodulate each scheduled MPDCCH, which consumes power. In order to reduce power consumption, the MPDCCH scheduling method shown in FIG. 3 of the MTC terminal in the embodiment of the present application.

In Fig. 3, the MPDCCH message at one time schedules the transmission of the MPDSCH at four times. The 4 MPDSCHs in Figure 3 are MPDSCH1, MPDSCH2, MPDSCH3 and MPDSCH4.

In this embodiment, the joint indication information may be information carried in the MPDCCH message. The MPDCCH message is a message sent using the MPDCCH. In MTC coverage enhancement mode A, one DCI issued by MPDCCH can schedule up to 8 downlink received TBs. In coverage enhancement mode B, a DCI issued by an MPDCCH can schedule up to 4 downlink received TBs. The joint indication information issued by the base station provided in this embodiment may be DCI sent when the MTC terminal is in enhanced coverage mode A or enhanced coverage mode B.

In some embodiments, the mapping relationship between the number of repeated transmissions of TB and MCS includes:

The mapping relationship between the number of repeated transmissions of TB and different MCS levels.

As shown in Table 1, the number of repeated transmissions R1, R2, R3, and R4 all correspond to different MCS levels; and the five bits corresponding to different mapping relationships have different bit values. Thus, the terminal receives the five issued by the base station. The joint indication information of the bit can clearly know the number of repeated transmissions and the MCS level indicated by the current base station.

Different MCS levels have different enhanced coverage effects. Therefore, in this embodiment, when establishing the mapping relationship between MCS levels and the number of repeated transmissions, the enhanced coverage effect and the number of repeated transmissions will be balanced to ensure successful reception by the receiving end such as MTC terminals. rate.

In some embodiments, the mapping relationship between the number of repeated transmissions of TB and different MCS levels includes:

The first set of times is a mapping relationship between MCS levels higher than the first threshold, where the first set of times includes: one or more repeated transmission times;

and / or,

The second set of times is a mapping relationship between MCS levels equal to or lower than the first threshold, where the second set of times includes: one or more repeated transmission times;

Wherein, the number of repeated transmission times included in the second set of times is different from the number of repeated transmission times included in the first set of times, and/or at least one of the included repeated transmission times is different.

For example, there are 16 MCS levels supported by the MTC terminal, which are 0 to 15. The first threshold here is the level threshold of the MCS level.

In this embodiment, the first number set and the second number set include at least one repeated transmission number. The number of repeated transmission times contained in the first number set and the second number set are different, or the number is the same but the value of the repeated transmission number is different.

In this embodiment, the MCS level supported by the terminal is based on the first threshold in at least two sub-ranges, and the first set of times and the second set of times are respectively set for the two sub-ranges. In this way, the joint indication information can simply tell the terminal the number of repeated transmissions of the TB indicated by the current base station and the MCS level allowed to be used by the terminal by indicating the mapping relationship.

In some embodiments, according to the number of repeated transmissions of the transport block TB and the mapping relationship between the modulation and coding strategy MCS, the issuing of joint indication information includes:

According to the number of repeated transmissions of TBs and the mapping relationship between the MCS and the number of TBs, joint indication information is issued. The joint indication information is also used to indicate the number of TBs by indicating the mapping relationship.

In this embodiment, the mapping relationship is further the mapping relationship between the number of repeated transmissions, the MCS and the number of TBs.

The number of TBs is the number of different TBs, that is, the number of TBs that transmit different content. The number of TBs is related to the amount of data that the terminal needs to transmit.

Table 3 is a mapping relationship between the number of repeated transmissions of TB, MCS, and the number of TBs provided in an embodiment of this application.

table 3

In this embodiment, the joint indication information that can be completely carried by one information field, the number of repeated transmissions, the number of TBs, and the MCS level indicated at the same time, saves signaling overhead again.

For example, according to Table 3, the mapping relationship between the number of repeated transmissions, the MCS and the number of TBs is defined, and the indication can be completed using only 6 bits.

In some embodiments, as shown in FIG. 4, the method provided in the embodiment of the present application may specifically be:

According to the number of repeated transmissions of TB and the mapping relationship between MCS and the number of TBs, joint indication information is issued.

The mapping relationship between the number of repeated transmissions of TB and the number of MCS and TB includes:

The third number set, the mapping relationship between the first TB number and the first MCS set, where the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;

and / or,

The fourth order set, the mapping relationship between the second TB number and the second MCS set,

Wherein, the fourth number set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.

It can be seen from Table 3 that if the number of the first TB is 1, the MCS level can be 0 to 15, that is, the first MCS set can include MCS levels numbered 0 to 15. At the same time, the corresponding number of repeated transmissions can be changed among R1 to R4 based on the number of the first TB and the MCS level.

For another example, if the second number is 2, the MCS levels may be 9-15, that is, the second MCS set may include MCS levels numbered 9-15. At the same time, the corresponding number of repeated transmissions can be changed from R3 to R4 based on the second TB number and MCS level.

For another example, the number of the first TB is 3, and the MCS levels may be 11 and 13, that is, the first MCS set may include MCS levels numbered 0 and 13. At the same time, the corresponding number of repeated transmissions can be changed in R3 to R4 based on the number of the first TB and the MCS level.

In some embodiments, the second number of TBs is greater than the first number of TBs;

The number of MCS levels contained in the second MCS set is more than the data contained in the first MCS set;

The number of repetitive transmission times contained in the third frequency set is greater than the number of repetitive transmission times contained in the fourth frequency set; and/or the average value of the repeated transmission times contained in the third frequency set is less than the repetition contained in the fourth frequency set The average value of the number of transfers.

With this setting method, the number of repeated transmissions, the MCS level allowed for the terminal and the number of TBs on the receiving effect of the terminal can be well balanced. At the same time, the joint indication information is used to inform the terminal of the number of repeated transmissions at once through the indication of the mapping relationship. One or two of the level and the number of TBs.

In some embodiments, the mapping relationship may be: the mapping relationship pre-written in the communication protocol. In this way, the mapping relationship is written when the terminal leaves the factory or the base station is established.

In some embodiments, the mapping relationship may be a pre-negotiated mapping relationship, for example, a mapping relationship issued by a base station in a broadcast message or a multicast message. In a word, both the base station and the terminal know any of the foregoing mapping relationships in advance. When the base station sends the joint indication information, it queries the mapping relationship and sends the joint indication information according to the requirement of the number of repeated transmissions.

As shown in FIG. 5, this embodiment provides an information determination method, which includes:

Step S210: Receive joint indication information;

Step S220: Determine the number of repeated transmissions of the TB according to the mapping relationship indicated by the joint indication information, and determine the MCS.

The method for determining information in this embodiment is applied to a terminal, for example, the aforementioned MTC terminal. What the terminal receives is the joint indication information, rather than the separate indication information indicating the content of one information.

After receiving the joint indication information, it is necessary to know the MCS according to the mapping relationship corresponding to the joint indication information while knowing the number of repeated transmissions.

In this way, the terminal knows the number of repeated transmissions and the MCS through the reception of a joint indication information, which reduces the signaling overhead of the reception.

In some embodiments, the method further includes:

The number of TBs is determined according to the mapping relationship indicated by the joint indication information.

In this embodiment, the mapping relationship may be the mapping relationship between the number of repeated transmissions and the MCS, or the mapping relationship between the number of repeated transmissions, the MCS, and the number of TBs. If the mapping relationship is between the three, the terminal will also determine the number of TBs according to the joint indication information.

In this embodiment, whether it is the mapping relationship between the number of repeated transmissions and MCS, or the mapping relationship between the number of repeated transmissions, the number of MCS, and the number of TBs, refer to the foregoing embodiment, and will not be omitted here. repeated.

As shown in FIG. 6, this embodiment provides an information indicating device, including:

The issuing module is configured to issue joint indication information according to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS. The joint indication information is used to indicate the scheduled mapping relationship by indicating the mapping relationship. The number of repeated transmissions of TB and also indicate MCS.

The issuing module provided in this embodiment may be a program module, and after the program module is executed by the processor, the issuing of the joint indication information can be realized.

In some embodiments, the apparatus may further include: a storage module; the storage module may be used to store the mapping relationship and/or the association indication information.

In other embodiments, the issuing module may be a combination of software and hardware; the combination of software and hardware may be various programmable arrays; programmable arrays include but are not limited to complex programmable arrays or field programmable arrays.

In some other embodiments, the issuing module may be a pure hardware module; the pure hardware module includes, but is not limited to, an application specific integrated circuit.

In some embodiments, the mapping relationship between the number of repeated transmissions of TB and MCS includes:

The mapping relationship between the number of repeated transmissions of TB and different MCS levels.

In some embodiments, the mapping relationship between the number of repeated transmissions of TB and different MCS levels includes:

The first set of times and the mapping relationship between MCS levels higher than the first threshold, where the first set of times includes: one or more repeated transmission times;

and / or,

The second set of times is a mapping relationship between MCS levels equal to or lower than the first threshold, where the second set of times includes: one or more repeated transmission times;

Wherein, the number of repeated transmission times included in the second set of times is different from the number of repeated transmission times included in the first set of times, and/or at least one of the included repeated transmission times is different.

In some embodiments, according to the number of repeated transmissions of the transport block TB and the mapping relationship between the modulation and coding strategy MCS, issuing the joint indication information includes:

Based on the number of repeated transmissions of TBs and the mapping relationship between the MCS and the number of TBs, joint indication information is issued, where the joint indication information is also used to indicate the number of TBs by indicating the mapping relationship.

In some embodiments, the mapping relationship between the number of repeated transmissions of TB and the number of MCS and TB includes:

The third number set, the mapping relationship between the first TB number and the first MCS set, where the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;

and / or,

The fourth order set, the mapping relationship between the second TB number and the second MCS set,

Wherein, the fourth number set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.

In some embodiments, the second number of TBs is greater than the first number of TBs;

The number of MCS levels contained in the second MCS set is more than the data contained in the first MCS set;

The number of repetitive transmission times contained in the third frequency set is greater than the number of repetitive transmission times contained in the fourth frequency set; and/or the average value of the repeated transmission times contained in the third frequency set is less than the repetition contained in the fourth frequency set The average value of the number of transfers.

As shown in FIG. 7, this embodiment provides an information determination device, including:

The receiving module 210 is configured to receive joint indication information;

The determining module 220 is configured to determine the number of repeated transmissions of the TB according to the mapping relationship indicated by the joint indication information, and determine the MCS.

The receiving module 210 and the determining module 220 provided in this embodiment may be program modules. After the program module is executed by the processor, it can realize the reception of joint indication information, the number of repeated transmissions, and the determination of MCS.

In other embodiments, the receiving module 210 and the determining module 220 may be a combination of software and hardware; the combination of software and hardware may be various programmable arrays; programmable arrays include, but are not limited to, complex programmable arrays or field programmable arrays.

In some other embodiments, the receiving module 210 and the determining module 220 may be pure hardware modules; the pure hardware modules include but are not limited to application specific integrated circuits.

In some embodiments, the determining module 220 is further configured to determine the number of TBs according to the mapping relationship indicated by the joint indication information.

Several examples are provided below in conjunction with any of the above embodiments:

Example 1:

Use the characteristics of multi-TB scheduling and the relationship between each information domain to compress the information domain, and perform joint coding at the same time to achieve the purpose of reducing signaling overhead.

Use the relationship between different information domains to compress the information domain and perform joint coding at the same time. MCS selection and the setting of the number of repeated transmissions are set based on channel conditions.

Under the same channel conditions, a higher-level MCS can be set, and the number of repeated transmissions will increase at this time.

Another situation is to set a lower level of MCS, then the number of repeated transmissions will be relatively small at this time.

With this benefit, the MCS and the number of repeated transmissions can be jointly coded to obtain the aforementioned joint coding information.

In the case of multi-TB scheduling, usually the data volume of the data packet is relatively large. In order to reduce the number of transmissions, when the number of scheduled TBs is relatively large, the data volume of the transmitted data blocks is limited, for example, only large data blocks are allowed to be transmitted. At this time, a larger MCS needs to be selected. Using this benefit, the number of scheduled TBs and MCS can be jointly coded. At the same time, MCS, the number of repeated transmissions, and the number of scheduled TBs can be jointly coded.

Example 2:

Assume that the number of optional repeated transmissions configured by the base station for the user is {R1, R2, R3, R4}. When selecting a specific level of MCS, limit the optional repeated transmission times. For example, when the MCS level is less than the threshold X1, the optional repeated transmission times are only {R1, R2}, and when the MCS level is greater than the threshold, the optional repeated transmissions The number of transmissions is {R3, R4}.

The MCS and its corresponding optional number of repeated transmissions are jointly coded to generate the mapping relationship between the joint indication information, MCS and the number of repeated transmissions as shown in Table 1.

Example 3:

The compression and joint coding between the number of TBs and MCS are scheduled to obtain the aforementioned joint indication information. When the number of scheduled TBs is less than the threshold Y1, more MCS levels can be used, and when the number of scheduled TBs is greater than this threshold, the number of MCS levels used is limited.

There may be one or more TB thresholds determined above. The above threshold can be fixed by the protocol, or configured by high-level signaling.

For example, when the number of scheduled TBs is 1, all MCS levels can be used at this time, and when the number of scheduled TBs is 2, only four MCS levels can be used at this time. When the number of scheduled TBs is greater than 2, Two of the MCS levels are used at this time.

Table 4 provides a mapping relationship between the joint indication information, the number of TBs, and the MCS level provided by this example.

Table 4

Example 4:

Schedule compression and joint coding between TB, MCS and the number of repeated transmissions

This method is a combination of method one and method two, that is, the MCS level is restricted under different TB numbers, the number of repeated transmissions is restricted under a specific MCS, and the number of TBs, MCS levels and the number of repeated transmissions are jointly encoded. In short, in the embodiment of the present application, the number of optional repeated transmissions is limited under different MCS, and joint coding is performed to obtain joint indication information. The MCS selection is restricted under different scheduling TB numbers, and joint coding is performed. The mapping relationship provided in this example can be as shown in Table 3 above.

This embodiment also provides a communication device, including:

antenna;

Memory

The processor is respectively connected to the antenna and the memory, and is used to control the antenna to send and receive wireless signals by executing executable programs stored on the memory, and can execute the steps of the information indication method and/or information determination method provided by any of the foregoing embodiments.

The communication device provided in this embodiment may be the aforementioned terminal or base station. The terminal can be various human-borne terminals or vehicle-mounted terminals. The base station may be various types of base stations, for example, a 4G base station or a 5G base station.

The antenna may be various types of antennas, for example, a mobile antenna such as a 3G antenna, a 4G antenna, or a 5G antenna; the antenna may also include a WiFi antenna or a wireless charging antenna.

The memory may include various types of storage media, and the storage media is a non-transitory computer storage medium that can continue to store the information stored thereon after the communication device is powered off.

The processor may be connected to the antenna and the memory through a bus or the like, and used to read executable programs stored on the memory, for example, through the information indicating method and/or information determining method shown in FIG. 2, FIG. 4, and/or FIG.

The implementation of this application also provides a non-transitory computer-readable storage medium that stores an executable program, where the executable program is executed by a processor to implement the information indicating method provided by any of the foregoing embodiments And/or the steps of the information determining method, for example, at least one of the methods shown in FIG. 2, FIG. 4, and/or FIG. 5.

Fig. 8 shows a terminal according to an exemplary embodiment. The terminal may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

8, the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, And the communication component 816.

The processing component 802 generally controls the overall operations of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the foregoing method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations in the terminal 800. Examples of these data include instructions for any application or method operated on the terminal 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.

The power supply component 806 provides power for various components of the terminal 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal 800.

The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the terminal 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC). When the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module. The peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

The sensor component 814 includes one or more sensors for providing the terminal 800 with various status assessments. For example, the sensor component 814 can detect the open/close state of the terminal 800 and the relative positioning of components, such as the display and keypad of the terminal 800. The sensor component 814 can also detect the position change of the terminal 800 or a component of the terminal 800. The presence or absence of contact with the terminal 800, the orientation or acceleration/deceleration of the terminal 800, and the temperature change of the terminal 800. The sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact. The sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices. The terminal 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the terminal 800 may be configured by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the terminal 800 to complete the foregoing method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Figure 9 is a schematic diagram of a base station. 9, the base station 900 includes a processing component 922, which further includes one or more processors, and a memory resource represented by a memory 932, for storing instructions that can be executed by the processing component 922, such as application programs. The application program stored in the memory 932 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute instructions.

The base station 900 may also include a power supply component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to the network, and an input output (I/O) interface 958. The base station 900 can operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other embodiments of the present application. This application is intended to cover any variations, uses, or adaptive changes of this application. These variations, uses, or adaptive changes follow the general principles of this application and include common knowledge or customary technical means in the technical field not disclosed in this application. . The description and embodiments are only regarded as exemplary, and the true scope and spirit of the application are pointed out by the following claims.

It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the application is only limited by the appended claims.

Claims (18)

1. An information indication method, applied to a base station, including:

   According to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS, the joint indication information is issued, where the joint indication information is used to indicate the repetition of the scheduled TB by indicating the mapping relationship The number of transmissions and also indicate the MCS.
2. The method of claim 1, wherein:

   The mapping relationship between the number of repeated transmissions of the TB and the MCS includes:

   The mapping relationship between the number of repeated transmissions of the TB and different MCS levels.
3. The method according to claim 2, wherein the mapping relationship between the number of repeated transmissions of the TB and different MCS levels comprises:

   A first set of times, and a mapping relationship between MCS levels higher than a first threshold, where the first set of times includes: one or more of the repeated transmission times;

   and / or,

   A second set of times, and a mapping relationship between MCS levels equal to or lower than the first threshold, wherein the second set of times includes: one or more of the repeated transmission times;

   Wherein, the number of repeated transmission times included in the second number set and the first number set is different, and/or at least one of the included repeated transmission times is different.
4. The method according to claim 1, wherein the sending of joint indication information according to the number of repeated transmissions of the transport block TB and the mapping relationship between the modulation and coding strategy MCS comprises:

   The joint indication information is issued according to the mapping relationship between the number of repeated transmissions of the TB and the MCS and the number of TBs. The joint indication information is also used to indicate the TB by indicating the mapping relationship. Quantity.
5. The method according to claim 4, wherein the mapping relationship between the number of repeated transmissions of the TB and the number of MCS and TB comprises:

   The third number set, the mapping relationship between the first TB number and the first MCS set, wherein the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;

   and / or,

   The fourth frequency set is a mapping relationship between the second TB number and the second MCS set, where the fourth frequency set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.
6. The method of claim 5, wherein:

   The second TB quantity is greater than the first TB quantity;

   The number of MCS levels included in the second MCS set is more than the data included in the first MCS set;

   The number of repeated transmission times included in the third number set is greater than the number of repeated transmission times included in the fourth number set; and/or, the average value of the number of repeated transmissions included in the third number set is less than all The average value of the number of repeated transmissions included in the fourth number set.
7. A method for determining information, applied to a terminal, which includes:

   Receive joint instruction information;

   According to the mapping relationship indicated by the joint indication information, the number of repeated transmissions of the transport block TB is determined, and the modulation and coding strategy MCS is determined.
8. The method according to claim 7, wherein the method further comprises:

   The number of TBs is determined according to the mapping relationship indicated by the joint indication information.
9. An information indicating device, which includes:

   The issuing module is configured to issue joint indication information according to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS, where the joint indication information is used to indicate the mapping relationship, Indicate the number of repeated transmissions of the scheduled TB and indicate the MCS at the same time.
10. The apparatus according to claim 9, wherein the mapping relationship between the number of repeated transmissions of the TB and the MCS comprises:

    The mapping relationship between the number of repeated transmissions of the TB and different MCS levels.
11. The apparatus according to claim 10, wherein the mapping relationship between the number of repeated transmissions of the TB and different MCS levels comprises:

    A first set of times, and a mapping relationship between MCS levels higher than a first threshold, where the first set of times includes: one or more of the repeated transmission times;

    and / or,

    A second set of times, and a mapping relationship between MCS levels equal to or lower than the first threshold, wherein the second set of times includes: one or more of the repeated transmission times;

    Wherein, the number of repeated transmission times included in the second number set and the first number set is different, and/or at least one of the included repeated transmission times is different.
12. The apparatus according to claim 9, wherein the sending the joint indication information according to the number of repeated transmissions of the transport block TB and the mapping relationship between the modulation and coding strategy MCS comprises:

    According to the mapping relationship between the number of repeated transmissions of the TB and the MCS and the number of TBs, the joint indication information is issued, wherein the joint indication information is also used to indicate the TB by indicating the mapping relationship Quantity.
13. The apparatus according to claim 12, wherein the mapping relationship between the number of repeated transmissions of the TB and the number of MCS and TB comprises:

    The third number set, the mapping relationship between the first TB number and the first MCS set, wherein the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;

    and / or,

    The fourth order set, the mapping relationship between the second TB number and the second MCS set,

    Wherein, the fourth number set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.
14. The device according to claim 13, wherein:

    The second TB quantity is greater than the first TB quantity;

    The number of MCS levels included in the second MCS set is more than the data included in the first MCS set;

    The number of repeated transmission times included in the third number set is greater than the number of repeated transmission times included in the fourth number set; and/or, the average value of the number of repeated transmissions included in the third number set is less than all The average value of the number of repeated transmissions included in the fourth number set.
15. An information determining device, which includes:

    The receiving module is configured to receive joint indication information;

    The determining module is configured to determine the number of repeated transmissions of the transmission block TB according to the mapping relationship indicated by the joint indication information, and determine the modulation and coding strategy MCS.
16. The apparatus according to claim 15, wherein the determining module is further configured to determine the number of TBs according to the mapping relationship indicated by the joint indication information.
17. A communication device, which includes:

    antenna;

    Memory

    The processor is respectively connected to the antenna and the memory, and is configured to execute computer-executable instructions stored on the memory, control the transmission and reception of the antenna, and can implement any one of claims 1 to 6 or 7 to 8. The method provided by the item.
18. A computer storage medium that stores computer executable instructions, and the computer executable instructions can implement the method provided in any one of claims 1 to 6 or 7 to 8 after being executed by a processor.

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