CN111901280A

CN111901280A - Modulation coding strategy, power configuration method, device, equipment and storage medium

Info

Publication number: CN111901280A
Application number: CN202010105163.1A
Authority: CN
Inventors: 边峦剑; 戴博; 胡有军; 刘锟; 杨维维
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-11-06
Also published as: WO2021164449A1

Abstract

The application provides a modulation and coding strategy, a power configuration method, a device, equipment and a storage medium, wherein the modulation and coding strategy configuration method comprises the following steps: configuring a modulation and coding strategy for data based on a first modulation and coding strategy set; the first modulation and coding strategy set comprises at least one modulation and coding strategy, and the highest modulation mode corresponding to the first modulation and coding strategy set is 16 quadrature amplitude modulation. According to the technical scheme of the embodiment of the application, the modulation and coding strategy configuration of the data in different modulation modes is realized through the first modulation and coding strategy set, the compatibility of the different modulation modes is enhanced, and the data communication efficiency is enhanced.

Description

Modulation coding strategy, power configuration method, device, equipment and storage medium

Technical Field

The present application relates to the field of data communications, and in particular, to a modulation and coding strategy, a power configuration method, apparatus, device, and storage medium.

Background

In Release-16 version of narrowband physical network (narrowband Band Internet of Things, nb-IoT) technology, the maximum modulation scheme supports QPSK modulation with a peak rate of 126.8 kilobits per second. In Release-17, NB-IoT increases the maximum Modulation Scheme to 16 quadrature amplitude Modulation (MCS) to support higher data transmission rates. However, after the maximum modulation scheme is upgraded from Quadrature Phase Shift Keying (QPSK) to 16QAM, a new modulation and coding scheme MCS is generated. To support 16QAM modulation for NB-IoT, a new modulation coding strategy MCS set and corresponding MCS indication method needs to be designed. In addition, 16QAM is non-constant amplitude modulation, and the NB-IoT user terminal needs to know the power configuration of the data and reference signals when demodulating. However, no MCS configuration and power configuration method supporting 16QAM exists in the prior art. How to realize modulation coding and power configuration of data under 16QAM becomes the focus of research in the field.

Disclosure of Invention

The application provides a modulation and coding strategy, a power configuration method, a device, equipment and a storage medium.

The embodiment of the application provides a method for configuring a modulation and coding strategy, which comprises the following steps:

configuring a Modulation and Coding Scheme (MCS) for data based on a first MCS set;

the first modulation and coding strategy set comprises at least one modulation and coding strategy, and the highest modulation mode corresponding to the first modulation and coding strategy set is 16 quadrature amplitude modulation.

The embodiment of the application provides a power configuration method, which comprises the following steps:

determining a second symbol average power according to the first symbol average power;

configuring power for data on the first symbol and the second symbol based on the first symbol average power and the second symbol average power, respectively;

the first symbol is an OFDM symbol of a loaded reference signal, and the second symbol is an OFDM symbol of a non-loaded reference signal, or the second symbol is an OFDM symbol of a loaded reference signal, and the first symbol is an OFDM symbol of a non-loaded reference signal.

The embodiment of the application provides a configuration device of a modulation and coding strategy, which comprises:

a policy configuration module, configured to configure a Modulation and Coding policy for data based on a first Modulation and Coding Scheme (MCS) set;

The embodiment of the application provides a power configuration device, and the device comprises:

a power determining module, configured to determine a second symbol average power according to the first symbol average power;

a power configuration module configured to configure power for data on the first symbol and the second symbol based on the first symbol average power and the second symbol average power, respectively;

An embodiment of the present application provides an apparatus, including:

one or more processors;

a memory for storing one or more programs;

when executed by the one or more processors, the one or more programs cause the one or more processors to implement a method for configuring a modulation and coding scheme or a method for configuring power as described in any of the embodiments of the present application.

The present application provides a computer readable storage medium, on which a computer program is stored, and the program, when executed by a processor, implements a method for configuring a modulation and coding strategy or a method for configuring power as described in any of the present application embodiments.

With regard to the above embodiments and other aspects of the present application and implementations thereof, further description is provided in the accompanying drawings description, detailed description and claims.

Drawings

Fig. 1 is a flowchart of a configuration method of a modulation and coding scheme according to an embodiment of the present application.

Fig. 2 is a flowchart of a method for configuring a modulation and coding strategy during uplink transmission according to an embodiment of the present application;

fig. 3 is a flowchart of a method for configuring a modulation and coding strategy when in-band deployment according to an embodiment of the present application;

fig. 4 is an exemplary diagram of a configuration method of a modulation and coding scheme provided in an embodiment of the present application;

fig. 5 is a diagram illustrating an example of a configuration method of a modulation and coding scheme according to an embodiment of the present application;

fig. 6 is a flowchart of a power configuration method provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a configuration apparatus for a modulation and coding strategy according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a power configuration apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an apparatus provided in an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Fig. 1 is a flowchart of a method for configuring a modulation and coding strategy according to an embodiment of the present application, where the embodiment of the present application is applicable to a situation where a maximum modulation scheme is improved to 16QAM, and the method may be executed by a device for configuring a modulation and coding strategy according to the embodiment of the present application, where the device may be implemented by software and/or hardware, and referring to fig. 1, the method according to the embodiment of the present application specifically includes the following steps:

step 101, configuring a Modulation and Coding Scheme (MCS) for data based on a first MCS set; the first Modulation and coding strategy set includes at least one Modulation and coding strategy, and a highest Modulation scheme corresponding to the first Modulation and coding strategy set is a 16 quadrature amplitude Modulation (16 QAM).

In the embodiment of the present invention, the MCS set may be represented in a table format, or may be represented in another format, which is merely described in the embodiment and is not limited thereto. The first MCS set is a first MCS table if the MCS set is represented in a table form.

In the embodiment of the present invention, in the first MCS set, one MCS corresponds to one modulation scheme and one Transport Block Size (TBS) index, where the TBS is the bit number of a data Transport Block, and a corresponding relationship between the TBS index and the bit number of the data Transport Block is defined by a TBS table in an existing standard protocol. Wherein, the TBS index is the TBS number.

Therefore, one MCS is determined, i.e., the transport block size TBS and modulation scheme of the data can be determined. When the communication node configures MCS for the data, one of the MCS sets is selected from the first MCS set, and the data is coded and modulated.

Further, the first modulation and coding strategy set comprises T modulation and coding strategies, wherein T is more than 16 and less than or equal to 32.

Further, on the basis of the embodiment of the above application, in the first MCS set, the modulation schemes corresponding to the MCSs at least include Quadrature Phase Shift Keying (QPSK) and 16 QAM.

Specifically, the first MCS set is a first MCS table, and the first MCS table includes QPSK modulation and 16QAM modulation.

In this embodiment of the present invention, the number of MCSs corresponding to QPSK modulation schemes in the first MCS set is 14.

Specifically, in the first MCS set, the number of MCSs corresponding to QPSK modulation schemes is 14. Specifically, MCS indices 0 to 13 correspond to TBS indices 0 to 13, and the modulation scheme is QPSK. Wherein, the MCS index is the MCS sequence number.

In the embodiment of the present invention, the number of MCSs corresponding to 16QAM in the first MCS set is L, where L is a positive integer greater than or equal to 12.

In one embodiment, for the MCS of the L16 QAM modulation schemes, the largest MCS index corresponds to TBS index 21 or TBS 22. Wherein, the index is a sequence number.

Further, in another embodiment, the first MCS set may only include two modulation schemes of QPSK and 16QAM modulation, and then the number of configurable MCSs is 14+ L. Wherein L may be a positive integer greater than or equal to 12.

Further, on the basis of the embodiment of the above application, the modulation and coding strategy in the first modulation and coding strategy set includes N groups, where the modulation and coding strategies in each group have different modulation modes and the same data transmission size, where N is a positive integer greater than or equal to 4.

Specifically, in the first MCS set, the MCS may be divided into N groups, where N groups of MCSs respectively correspond to N TBSs, and the MCSs in the groups have the same TBS and different modulation schemes, where N is a positive integer greater than or equal to 4. Wherein, each set of MCS comprises two MCSs, and the two MCSs correspond to QPSK modulation and 16QAM modulation respectively. That is, in the first MCS set, N pairs of MCSs have overlapping TBSs, the TBSs of the two MCSs in each pair are the same, and the modulation schemes are QPSK and 16QAM, respectively. The N groups of MCS are set, so that corresponding N TBSs can be configured with two modulation modes of QPSK and 16QAM, and the N TBSs have higher code rate when being configured with QPSK modulation and have lower code rate when being configured with 16QAM modulation. When the MCS is configured for the data, a modulation scheme and a code rate suitable for channel transmission may be selected.

Further, on the basis of the above application embodiment, referring to fig. 2, during data uplink transmission, step 101 further includes:

step 201, during uplink transmission, the configuration range of the modulation and coding strategy is modulation and coding strategy index 0 to 13+ N, where N is a positive integer greater than or equal to 4.

In one embodiment, for uplink transmission, the MCS that is available for configuration data based on the first MCS set ranges from MCS index 0 to 13+ N. And in the case that the uplink data transmission supports 16QAM, selecting one MCS from MCS indexes 0 to 13+ N of the first MCS set, and carrying out coding modulation on data. This is because the maximum TBS supported by uplink 16QAM is TBS13, and the MCS available for configuration data includes: 14 QPSK modulated MCSs (MCS 0 to 13), N TBS overlapped 16QAM modulated MCSs (MCS 14 to MCS 13+ N), it being understood that N may be a positive integer greater than or equal to 4.

Further, on the basis of the above application embodiment, referring to fig. 3, when NB-IoT is deployed in-band, step 101 further includes:

step 202, when the deployment mode is In-Band (In Band) deployment, the configuration range of the modulation and coding strategy is modulation and coding strategy index 0 to 16+ N or 0 to 17+ N, where N is a positive integer greater than or equal to 4.

Specifically, for NB-IoT In-band (In band) deployment, based on the first MCS set, the MCS range available for configuration data is MCS index 0 to 16+ N, or MCS index 0 to 17+ N. When the In band mode data transmission supports 16QAM, one MCS is selected from MCS indexes 0 to 16+ N of the first MCS set, or one MCS is selected from MCS indexes 0 to 17+ N of the first MCS set, and data is coded and modulated. This is because, the TBS supported by 16QAM In band mode is TBS 16 or TBS 17, and then the MCS for the configuration data may include: 14 QPSK modulated MCSs (MCS 0 to 13), N TBS overlapped 16QAM modulated MCSs (MCS 14 to MCS 13+ N), and TBS 14, 15, 16 corresponding MCSs (MCS 14+ N to 16+ N). Further, if the maximum supported TBS is TBS 17, the MCS available for configuration data also includes MCS 17+ N.

Further, on the basis of the embodiment of the foregoing application, referring to fig. 4, when the high-level configuration parameter indicates that 16QAM is not supported, step 101 further includes:

step 203, when the high-layer configuration parameter L1 indicates that 16qam is not supported, the configuration range of the modulation and coding strategy is modulation and coding strategy indexes 0 to 13.

In the embodiment of the present application, when the higher layer configuration parameter L1 indicates that 16QAM is not supported by data transmission, the MCS range available for configuration data is MCS indexes 0 to 13 for the first MCS set. Specifically, it is determined whether the output transmission supports 16QAM modulation according to a higher layer configuration parameter L1, and if the higher layer configuration parameter indicates that 16QAM modulation is supported, all the MCSs of QPSK and 16QAM modulation in the first MCS set may be used; if the higher layer configuration parameter indicates that 16QAM modulation is not supported, all QPSK modulated MCSs in the first MCS set, MCS 0 to 13, can be used.

Further, on the basis of the embodiment of the foregoing application, referring to fig. 5, when the high-layer configuration parameter indicates that 16QAM is supported, step 101 further includes:

step 204, when the high-level configuration parameter L1 indicates that 16qam is supported, configuring a modulation and coding strategy for data based on a first modulation and coding strategy set; wherein the maximum number of repetitions of the physical shared channel corresponding to the data is less than or equal to 128.

Specifically, when the higher layer configuration parameter L1 indicates that 16QAM is supported, the maximum number of repetitions of the physical shared channel is less than or equal to 128. Because the modulation order of 16QAM is higher, a better channel condition is required for demodulation, and when the physical shared channel is configured with a large number of repetitions, it indicates that the signal-to-noise ratio is low, the channel condition is not good, and it is not suitable for 16QAM transmission. Thus, the first communication node will only support 16QAM modulation when the physical shared channel is transmitted with a small number of repetitions or no repetitions.

In this embodiment of the present invention, based on the first modulation and coding strategy set, the modulation and coding strategy configured for the data is indicated by 5-bit downlink control information.

Specifically, the 5-bit downlink control information indicates one MCS in the first MCS set, and data is coded and modulated by the MCS.

In this embodiment of the present invention, when the higher layer configuration parameter L1 indicates that 16qam is supported, a bit of the repetition number field in the downlink control information is used as a bit of the modulation and coding strategy indication information, where the modulation and coding strategy indication information is used to indicate one modulation and coding strategy in the first modulation and coding strategy set.

Specifically, when the higher layer configuration parameter L1 indicates that 16QAM is supported, the most significant bit of the repetition number field in the downlink control information is used as one bit of the MCS indication information. The MCS indication information is used for indicating one MCS in the MCS set. Wherein the repetition number field is used for indicating the repetition number of the physical shared channel.

In this embodiment of the present invention, the higher layer configuration parameter L1 may directly indicate whether 16QAM is supported, that is, whether 16QAM (enable 16QAM) is enabled; or indirectly indicate whether 16QAM is supported, for example, the higher layer configuration parameter L1 indicates whether the first MCS set is used, which indicates that 16QAM is supported if the first MCS set is used, and indicates that 16QAM is not supported if the first MCS set is not used.

Specifically, the repetition number field in the downlink control information contains 4 bits of information, and because the first communication node only indicates that 16QAM modulation is supported when the physical shared channel has a small repetition number or no repetition transmission, the repetition number field does not need so much bit information to indicate the repetition number. Then, when the 16QAM modulation is supported, the lower number of repetitions, i.e., the lower 3 bits in the field of the number of repetitions is used to indicate the number of repetitions of the physical shared channel, and the most significant 1-bit information is used as one bit of the MCS indication information (which may be the lowest significant bit or the highest significant bit of the MCS indication information). Thus, the MCS indication information will contain 5 bits of information that can be used to indicate the first MCS set, in particular, the 5 bits of MCS indication information is used to indicate one MCS in the first MCS set.

According to the technical scheme of the embodiment of the application, the modulation and coding strategy is configured for the data through the preset first modulation and coding strategy set, the first modulation and coding strategy set can comprise a plurality of modulation and coding strategies, each modulation and coding strategy can correspond to one modulation and coding strategy index, the highest modulation mode in the first modulation and coding strategy set is 16 quadrature amplitude modulation, compatibility of high modulation modes is achieved, data communication capacity is enhanced, and data communication efficiency is improved.

The first set of modulation and coding strategies may be represented in table form.

In an exemplary embodiment, an MCS table may be used to support the modulation order being increased to 16QAM, in the MCS table, the modulation scheme corresponding to the MCS includes QPSK and 16QAM, and the corresponding TBS includes at least TBS0 to 21;

in the embodiment of the present application, MCS corresponds to TBS0 to 13 from 0 to 13 in the MCS table, and the modulation scheme corresponding to MCS 0 to 13 is QPSK.

In the embodiment of the application, in the MCS table, the modulation modes corresponding to MCS 14 to 14+ J are 16QAM, and J is greater than or equal to 12 and less than or equal to 17. Wherein, the MCS index 14+ J corresponds to TBS index TBS21 or TBS 22.

In the embodiment of the present application, in the MCS table, there are N pairs of MCSs with overlapping TBSs, that is, two MCSs of each pair have the same TBSs, and the modulation schemes are QPSK and 16QAM modulation, respectively. N is a positive integer greater than or equal to 4.

In the embodiment of the present application, for uplink transmission, based on the MCS table, the range of the MCS that can be used for configuration data is MCS index 0 to 13+ N.

In the embodiment of the present application, for an NB-IoT In-band (In band) deployment mode, based on the MCS table, the MCS range available for configuration data is MCS index 0 to 16+ N, or MCS index 0 to 17+ N.

Alternatively, the MCS table may be as shown in table one, where J is equal to 12, N is equal to 5, and the maximum TBS is TBS 21. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation. Table 1 is as follows:

watch 1

Alternatively, another MCS table example may be as shown in table two. Said J equals 13, said N equals 5, and the maximum TBS is TBS 22. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation. Table two is as follows:

watch two

Alternatively, another MCS table representation is shown in table three, where J is equal to 13, N is equal to 6, and the maximum TBS is TBS 21. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation.

Watch III

Optionally, MCS table example four as shown in table four, said J equals 14, said N equals 6, and the maximum TBS is TBS 22. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation.

Watch four

Alternatively, another MCS table example is shown in table five, where J is equal to 17, N is equal to 10, and the maximum TBS is TBS 21. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation.

Watch five

MCS index	Modulation order	TBS index
			0	2	0
1	2	1
			2	2	2
3	2	3
			4	2	4
5	2	5
			6	2	6
7	2	7
			8	2	8
9	2	9
			10	2	10
11	2	11
			12	2	12
13	2	13
			14	4	4
15	4	5
			16	4	6
17	4	7
			18	4	8
19	4	9
			20	4	10
21	4	11
			22	4	12
23	4	13
			24	4	14
25	4	15
			26	4	16
27	4	17
			28	4	18
29	4	19
			30	4	20
31	4	21

Alternatively, another MCS table representation is shown in table six, where J is equal to 17, N is equal to 9, and the maximum TBS is TBS 22. Wherein, the modulation order 2 is QPSK modulation, and the modulation order 4 is 16QAM modulation.

Watch six

In another embodiment, an MCS table for supporting modulation orders up to 16QAM, comprising:

in the MCS table, the modulation scheme corresponding to the MCS includes QPSK and 16QAM, and the corresponding TBS at least includes TBS0 to 21;

in the embodiment of the present application, the number of MCSs corresponding to a 16QAM modulation scheme is L, where L is greater than or equal to 12. Among the L16 QAM modulated MCSs, the largest MCS index corresponds to TBS21 or TBS 22.

In the embodiment of the present application, for NB-IoT In-band (In band) deployment, based on the MCS table, the MCS range available for configuration data is MCS index 0 to 16+ N1, or MCS index 0 to 17+ N1. Wherein N1 is a positive integer less than 4.

Optionally, the MCS table is shown in table seven, where the number of the 16QAM modulated MCSs is 12, and the 16QAM modulated MCSs correspond to TBSs 10 to 21, respectively. Based on table seven, the MCS range available for configuration data In the In band mode is MCS indices 0 to 17, or MCS indices 0 to 18.

Watch seven

Optionally, the MCS table is shown in table eight, for example, where the number of the 16QAM modulated MCSs is 13, corresponding to TBSs 9 to 21, respectively. Based on table eight, the MCS range available for configuration data In the In band mode is MCS indices 0 to 18, or MCS indices 0 to 19.

Table eight

Optionally, the MCS table is shown in table nine, where the number of the 16QAM modulated MCSs is 14, and the 16QAM modulated MCSs correspond to TBSs 8 to 21, respectively. Based on table nine, the MCS range available for configuration data In the In band mode is MCS indices 0 to 19, or MCS indices 0 to 20.

Watch nine

Optionally, the MCS table is shown in table ten, for example, where the number of the 16QAM modulated MCSs is 13, corresponding to TBSs 10 to 22, respectively. Based on table ten, the MCS range available for configuration data In the In band mode is MCS indices 0 to 17, or MCS indices 0 to 18.

Watch ten

Optionally, the MCS table is shown in table eleven, where the number of the 16QAM modulated MCSs is 14, corresponding to TBSs 9 to 22, respectively. Based on table eleven, the MCS range available for configuration data In the In band mode is MCS indices 0 to 18, or MCS indices 0 to 19.

Watch eleven

Optionally, the MCS table is as shown in table twelve, where the number of the 16QAM modulated MCSs is 15, corresponding to TBSs 8 to 22, respectively. Based on table twelve, the MCS range available for configuration data In the In band mode is MCS indices 0 to 19, or MCS indices 0 to 20.

Watch twelve

In another embodiment, whether the data transmission supports 16QAM may be determined according to the higher layer configuration parameter L1, and if the data transmission supports 16QAM, the most significant bit of the repetition number field in the downlink control information is used as the most significant bit or the least significant bit of the MCS indication information. Wherein, the repetition number field is used for indicating the repetition number of the PDSCH, and the MCS indication information is used for indicating one MCS in the MCS table.

For Release-16 Release NB-IoT, the MCS indication field in the downlink control information includes 4 bits of information, indicating 14 MCSs. The repetition number field in the downlink control information includes 4 bits of information, has 16 values, and indicates for 16 kinds of repetition numbers, and the correspondence between the values of the repetition number field and the repetition numbers can be shown in table thirteen.

Watch thirteen

However, when 16QAM modulation is supported, on one hand, the MCS table contains more than 16 MCS and less than or equal to 32 MCS, so the MCS indication in the downlink control information needs 5 bits of information for indication; on the other hand, since the base station will only indicate support of 16QAM modulation when PDSCH has a small number of repetitions or no repetition transmission, the number of repetitions field does not need as much information as 4 bits to indicate the number of repetitions of PDSCH. Therefore, the most significant bit of the repetition number field in the downlink control information is used as the most significant bit or the least significant bit of the MCS indication information.

In the embodiment of the present application, a lower number of repetitions, that is, 3 bits of low bits in the repetition number field are used to indicate the number of repetitions of the PDSCH, and a correspondence between a value of the repetition number field containing 3 bits of information and the number of repetitions is shown in table fourteen; the most significant 1-bit information is used as one bit of the MCS indication information (which may be the least significant bit or the most significant bit of the MCS indication information). The MCS instruction information is changed to 5-bit information by adding 4 bits originally in the MCS instruction field.

Table fourteen

Repeated time domain value	Number of repetitions
		0	1
1	2
		2	4
3	8
		4	16
5	32
		6	64
7	128

In a specific embodiment, the first communication node sends downlink control information, where the downlink control information includes 5-bit MCS indication information, and the MCS indication information is used to indicate one MCS in the first MCS set, that is, an MCS used for data transmission.

Further, in yet another embodiment, the first communication node transmits downlink control information.

And under the condition that the data transmission does not support 16QAM, the repetition time field in the downlink control information comprises 4 bits, and the MCS indication field comprises 4 bits. Wherein, the repetition number field is used for indicating the repetition number of a physical shared channel (PDSCH or PUSCH), and the MCS indication field is used for indicating the MCS adopted by data transmission. In this case, the 4-bit repetition number indication information may indicate a configuration of 16 repetition numbers at most, and the 4-bit MCS indication information may indicate a MCS of 16 MCS at most.

In the case where the data transmission supports 16QAM, one bit of the repetition number field in the downlink control information is used as one bit of the MCS indication information, for example, the most significant bit of the repetition number field in the downlink control information is used as the most significant bit or the least significant bit of the MCS indication information. Thereby, the indication information of the number of repetitions is changed from 4 bits to 3 bits, in which case the 3-bit repetition number indication information may indicate for up to 8 repetition number configurations; meanwhile, the MCS indication information is changed from 4 bits to 5 bits, in which case the 5-bit MCS indication information may indicate a maximum of 32 MCSs.

In a particular embodiment, the second communication node receives downlink control information. And determining the MCS adopted by the transmission data according to the downlink control information.

And under the condition that the data transmission does not support 16QAM, the second communication node determines the MCS adopted by the data transmission according to the 4-bit MCS indication field in the downlink control information. Meanwhile, the second communication node determines the repetition times of a physical shared channel (PDSCH or PUSCH) according to a 4-bit repetition time domain in the downlink control information.

And in the case that the data transmission supports 16QAM, the second communication node determines the MCS adopted by the data transmission according to the 5-bit MCS indication information in the downlink control information based on the first MCS table. Wherein the 5-bit MCS instruction information is composed of 4 bits of the MCS instruction field and 1 bit of the repetition number field. Meanwhile, the second communication node determines the repetition times of the physical shared channel according to the remaining 3 bits in the repetition time field in the downlink control information. Wherein, the maximum modulation mode of the first MCS table is 16QAM modulation. In another embodiment, whether the data transmission supports 16QAM may be determined according to the higher layer configuration parameter L1, and if the data transmission supports 16QAM, the MCS field and the repetition number field are used as joint indication information indicating the MCS and the repetition number of the physical shared channel.

In the embodiment of the application, x1 × y1 states represent a modulation mode and a repetition number which are less than or equal to R1, the modulation mode includes 16QAM modulation and QPSK, x1 is the number of states corresponding to the modulation mode, and y1 is the number of states of repetition number which is less than or equal to R1;

in the embodiment of the present application, x2 × y2 states indicate that the number of repetitions is greater than that of the modulation scheme under R1, the modulation scheme only includes QPSK, x2 is the number of states corresponding to the modulation scheme at this time, and y2 is the number of states greater than R1.

In this embodiment of the present application, the number of bits of the joint indication information is 8; .

In the embodiment of the present application, the repetition number set includes 1, 2, 4, 8, 16, 32, 64, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, y1 repetition numbers corresponding to the first y1 repetition numbers in the repetition number set, and y2 repetition numbers corresponding to the remaining repetition numbers except y1 in the repetition number set;

assuming that the index of the number of repetitions of the physical shared channel configuration is y and the index of the modulation mode is x, the value W corresponding to the joint indication information includes: if the repetition index y corresponds to the repetition number smaller than or equal to R1, W is y x, and if the repetition index y corresponds to the repetition number larger than R1, W is y1 x1+ y x. Or if the repetition index y corresponds to the repetition number smaller than or equal to R1, W is y x + y2 x2, and if the repetition index y corresponds to the repetition number larger than R1, W is y x.

The specific application comprises the following steps:

the first scheme is as follows: r1 ═ 2, y1 ═ 2, x1 ═ 30 or 28 or 27 or 26 or 25, x2 ═ 14, y2 ═ 14;

scheme II: r1 ═ 4, y1 ═ 3, x1 ═ 30 or 28 or 27 or 26 or 25, x2 ═ 14, y2 ═ 13;

the third scheme is as follows: r1 ═ 8, y1 ═ 4, x1 ═ 30 or 28 or 27 or 26 or 25, x2 ═ 14, y2 ═ 12;

fig. 6 is a flowchart of a power configuration method provided in an embodiment of the present application, where the embodiment of the present application is applicable to a situation where the maximum modulation mode is raised to 16QAM, and the method may be performed by a power configuration apparatus provided in an embodiment of the present application, where the apparatus may be implemented by software and/or hardware, and referring to fig. 6, the method in an embodiment of the present application specifically includes the following steps:

step 301, determining a second symbol average power according to the first symbol average power.

The first symbol average power may be a linear average power of all Resource Elements (REs) on a transmission bandwidth of a Physical shared Channel on the first symbol, where all REs on the first symbol include a Reference Signal (RS) RE and a Physical shared Channel (PUSCH), and the Physical shared Channel is a Physical Uplink Shared Channel (PUSCH) or a Physical downlink shared Channel (PUSCH). The second symbol average power may be a linear average power of all Resource Elements (REs) over a transmission bandwidth of the physical shared channel over the second symbol. The average power of the Resource elements is also referred to as Energy Per Resource Element (EPRE), the average power of the reference signal Resource elements may be represented as RS EPRE, the average power of the physical uplink shared channel Resource elements may be represented as PUSCH EPRE, and the average power of the physical downlink shared channel Resource elements may be represented as PDSCH EPRE.

Specifically, the power corresponding to the modulation and coding strategy may be determined according to the first symbol, the first symbol average power may be determined according to the power of each first symbol, and the second symbol average power may be determined according to the first symbol average power. Illustratively, in NB-IoT, the Reference Signal is a Narrowband Reference Signal (NRS). The OFDM symbols of the loaded reference signal are OFDM symbol indexes 5 and 6 in one transmission slot, and the OFDM symbols of the unloaded reference signal are OFDM symbol indexes 0, 1, 2, 3, and 4 in one transmission slot. The index is the sequence number. The first symbol average power may be determined from symbols in the physical shared channel and the second symbol average power may be determined from the first symbol.

Step 302, configuring power for data on the first symbol and the second symbol based on the first symbol average power and the second symbol average power respectively; the first symbol is an OFDM symbol of a loaded reference signal, and the second symbol is an OFDM symbol of a non-loaded reference signal, or the second symbol is an OFDM symbol of a loaded reference signal, and the first symbol is an OFDM symbol of a non-loaded reference signal.

In this embodiment, the first symbol average power is used to configure power for data on the first symbol, and the second symbol average power is used to configure power for data on the second symbol.

Further, on the basis of the embodiment of the above application, the first symbol average power and the second symbol average power are equal.

In the embodiment of the present application, the first symbol average power and the second symbol average power are equal. I.e. the average power of the OFDM symbols of the loaded reference signals is the same as the average power of the OFDM symbols of the unloaded reference signals.

Further, on the basis of the embodiment of the above application, the method further comprises:

determining the first symbol average power according to the average power of the reference signal resource particles and a power offset value A; the power offset value a is a logarithmic value of a ratio of an average power of a physical shared channel resource element to an average power of the reference signal resource element over the first symbol.

Specifically, the average power of the reference signal resource element is P0, which can be obtained according to the high-level configuration parameters; and on the first symbol, determining a linear ratio R of the average power of the physical shared channel resource element to the average power of the reference signal resource element according to a power offset value A. Thus, an average power value P1 of the physical shared channel resource element on the first symbol, i.e., P1 ═ R × P0, can be derived based on P0 and R. The first symbol average power may be calculated from P0 and P1. The physical shared channel may include a physical uplink shared channel or a physical uplink shared channelAnd (3) a downlink shared channel. For single port NRS, the first symbol average power is equal to

For two-port NRS, the first symbol average power is equal to

Further, on the basis of the embodiment of the above application, in NB-IoT, the power offset value a is determined by a higher layer configuration parameter L2.

In an embodiment of the present application, a method for determining whether the higher layer configuration parameter L2 is configured may be implemented by determining that the higher layer configuration parameter L2 is configured when the higher layer configuration parameter L1 indicates that 16QAM is supported.

Specifically, according to the indication of the high-layer configuration parameter L1, whether 16QAM modulation is supported or not is determined; the higher layer configuration parameter L2 will be configured if 16QAM modulation is supported, and the higher layer configuration parameter L2 will not be configured if 16QAM modulation is not supported.

In the embodiment of the present application, the first communication node sends the higher layer configuration parameter L3 to the second communication node, where the higher layer configuration parameter L3 indicates whether the higher layer configuration parameter L2 is configured.

Specifically, another determination of whether the higher-layer configuration parameter L2 is configured may be performed by the first communication node sending the higher-layer configuration parameter L3 to the second communication node, where the higher-layer configuration parameter L3 directly or indirectly indicates whether the higher-layer configuration parameter L2 is configured. For example, the higher layer configuration parameter L3 indicates whether downlink power allocation of Release-17 version is supported (which may also be called downlink power allocation enhancement), and if so, indicates that the higher layer configuration parameter L2 is configured, and if not, indicates that the higher layer configuration parameter L2 is not configured.

According to the technical scheme of the embodiment of the application, the average power of the second symbol is determined by determining the average power of the first symbol after the modulation and coding strategy, and the power is configured for the data on the second symbol according to the average power of the second symbol, so that the symbol power configuration under a high modulation mode is realized, the data communication capacity is enhanced, and the data communication efficiency is improved.

Fig. 7 is a schematic structural diagram of a configuration apparatus for a modulation and coding strategy according to an embodiment of the present application, which is capable of executing a configuration method for a modulation and coding strategy according to any embodiment of the present invention, and has corresponding functional modules and beneficial effects of the execution method. The device can be implemented by software and/or hardware, and specifically comprises:

a policy configuration module 401, configured to configure a Modulation and coding policy for data based on a first Modulation and Coding Scheme (MCS) set; the first modulation and coding strategy set comprises at least one modulation and coding strategy, and the highest modulation mode corresponding to the first modulation and coding strategy set is 16 quadrature amplitude modulation.

According to the technical scheme of the embodiment of the application, the modulation and coding strategy configuration is carried out on data through a first modulation and coding strategy set preset by a strategy configuration module, the first modulation and coding strategy set can comprise modulation and coding strategies consisting of modulation modes and data transmission sizes, each modulation and coding strategy can correspond to one modulation and coding strategy index, the highest modulation mode in the first modulation and coding strategy set is 16 quadrature amplitude modulation, the compatibility of high modulation modes is achieved, the data communication capacity is enhanced, and the data communication efficiency is improved. Further, on the basis of the above embodiment of the present invention, the modulation and coding strategy configured for data in the strategy configuration module 401 is indicated by 5-bit downlink control information.

Further, on the basis of the above application embodiments, the number of modulation and coding strategies corresponding to the quadrature phase shift keying modulation scheme in the first modulation and coding strategy set in the strategy configuration module 401 is 14.

Further, on the basis of the embodiment of the above application, the number of modulation and coding strategies corresponding to 16qam schemes in the first modulation and coding strategy set in the strategy configuration module 401 is L, where L is a positive integer greater than or equal to 12.

Further, on the basis of the embodiment of the application, the modulation and coding strategy in the first modulation and coding strategy set in the strategy configuration module 401 includes N groups, where the modulation and coding strategies in each group have different modulation modes and the same data transmission size, where N is a positive integer greater than or equal to 4.

Further, on the basis of the above application embodiment, the policy configuration module 401 further includes:

and the uplink transmission unit is used for configuring the modulation and coding strategy in a range from 0 to 13+ N in the uplink transmission, wherein N is a positive integer greater than or equal to 4.

and the In-Band deployment unit is used for configuring the modulation and coding strategy In a range of modulation and coding strategy indexes from 0 to 16+ N or from 0 to 17+ N when the deployment mode is In-Band (InBand) deployment, wherein N is a positive integer larger than or equal to 4.

a first higher layer configuration unit, configured to, when the higher layer configuration parameter L1 indicates that 16qam is not supported, configure the modulation and coding strategy in a range from modulation and coding strategy indices 0 to 13. Further, on the basis of the above application embodiment, the policy configuration module 401 further includes:

a second higher layer configuration unit, configured to configure a modulation and coding strategy for the data based on the first modulation and coding strategy set when the higher layer configuration parameter L1 indicates that 16qam is supported; wherein the maximum number of repetitions of the physical shared channel corresponding to the data is less than or equal to 128.

a third high-level configuration unit, configured to, when the high-level configuration parameter L1 indicates that 16qam is supported, and when the high-level configuration parameter L1 indicates that 16qam is supported, take a bit of the repetition number field in the downlink control information as a bit of the modulation and coding strategy indication information;

wherein the modulation coding strategy indication information is used for indicating one modulation coding strategy in the first modulation coding strategy set.

Fig. 8 is a schematic structural diagram of a power configuration apparatus provided in an embodiment of the present application, which is capable of executing a power configuration method provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method. The device can be implemented by software and/or hardware, and specifically comprises:

a power determining module 501, configured to determine a second symbol average power according to the first symbol average power.

A power configuration module 502 configured to configure power for data on the first symbol and the second symbol based on the first symbol average power and the second symbol average power, respectively; the first symbol is an OFDM symbol of a loaded reference signal, and the second symbol is an OFDM symbol of a non-loaded reference signal, or the second symbol is an OFDM symbol of a loaded reference signal, and the first symbol is an OFDM symbol of a non-loaded reference signal.

According to the technical scheme of the embodiment of the application, the power determining module determines the average power of the first symbol after the modulation and coding strategy determines the average power of the second symbol, and the power configuration module configures the power for the data on the second symbol according to the average power of the second symbol, so that the symbol power configuration under a high modulation mode is realized, the data communication capacity is enhanced, and the data communication efficiency is improved.

Further, on the basis of the embodiment of the above application, the first symbol average power and the second symbol average power in the power configuration device are equal.

Further, on the basis of the embodiment of the above application, the power configuration apparatus further includes:

an average power determining module, configured to determine the first symbol average power according to an average power of a reference signal resource element and a power offset value a; the power offset value a is a logarithmic value of a ratio of an average power of physical shared channel resource elements over the first symbol to an average power of the reference signal resource elements.

Further, on the basis of the embodiment of the above application, the power configuration device is in NB-IoT, and the power offset value a is determined by the higher layer configuration parameter L2.

Further, on the basis of the embodiment of the above application, when the higher layer configuration parameter L1 of the power configuration device indicates that 16 quadrature amplitude modulation is supported, the higher layer configuration parameter L2 is configured.

Further, on the basis of the above-mentioned application embodiment, when the first communication node of the power configuration apparatus sends the higher-layer configuration parameter L3 to the second communication node, the higher-layer configuration parameter L3 indicates whether the higher-layer configuration parameter L2 is configured.

Fig. 9 is a schematic structural diagram of an apparatus provided in an embodiment of the present application, and as shown in fig. 9, the apparatus includes a processor 50, a memory 51, an input device 52, and an output device 53; the number of processors 50 in the device may be one or more, and one processor 50 is taken as an example in fig. 5; the device processor 50, the memory 51, the input device 52 and the output device 53 may be connected by a bus or other means, and the bus connection is exemplified in fig. 9.

The memory 51 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as the modules (the policy configuration module 401, the power determination module 501, and the power configuration module 502) corresponding to the configuration device of the modulation and coding policy or the power configuration device in the embodiment of the present application. The processor 50 executes various functional applications of the device and data processing by executing software programs, instructions and modules stored in the memory 51, so as to implement the method of any of the above-mentioned application embodiments.

The memory 51 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 51 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 51 may further include memory located remotely from the processor 50, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 52 is operable to receive input numeric or character information and to generate key signal inputs relating to user settings and function controls of the apparatus. The output device 53 may include a display device such as a display screen.

The present embodiments also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a method for configuring a modulation and coding strategy or a method for configuring power, where the method for configuring a modulation and coding strategy includes:

The power configuration method comprises the following steps:

Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the method provided by any embodiment of the present invention.

The above description is only exemplary embodiments of the present application, and is not intended to limit the scope of the present application.

It will be clear to a person skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car mounted mobile station.

In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the application may be implemented by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

Any logic flow block diagrams in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, Read Only Memory (ROM), Random Access Memory (RAM), optical storage devices and systems (digital versatile disks, DVDs, or CD discs), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), programmable logic devices (FGPAs), and processors based on a multi-core processor architecture.

The foregoing has provided by way of exemplary and non-limiting examples a detailed description of exemplary embodiments of the present application. Various modifications and adaptations to the foregoing embodiments may become apparent to those skilled in the relevant arts in view of the following drawings and the appended claims without departing from the scope of the invention. Therefore, the proper scope of the invention is to be determined according to the claims.

Claims

1. A method for configuring a Modulation and Coding Scheme (MCS), comprising:

configuring a modulation and coding strategy for data based on a first modulation and coding strategy set;

2. The method of claim 1, wherein configuring a modulation and coding scheme for data based on a first set of modulation and coding schemes comprises: the modulation coding strategy configured for data is indicated by 5-bit downlink control information.

3. The method according to claim 1, wherein the number of modulation coding strategies corresponding to the quadrature phase shift keying modulation scheme in the first modulation coding strategy set is 14.

4. The method according to claim 1, wherein the number of modulation and coding strategies corresponding to 16qam schemes in the first modulation and coding strategy set is L, where L is a positive integer greater than or equal to 12.

5. The method according to claim 1, wherein the modulation and coding strategies in the first modulation and coding strategy set include N packets, and the modulation and coding strategies in each packet have different modulation schemes and the same data transmission size, where N is a positive integer greater than or equal to 4.

6. The method according to any of claims 1 or 5, wherein configuring a modulation and coding strategy for data based on a first set of modulation and coding strategies comprises:

during uplink transmission, the configuration range of the modulation and coding strategy is from 0 to 13+ N, where N is a positive integer greater than or equal to 4.

7. The method according to any of claims 1 or 5, wherein configuring a modulation and coding strategy for data based on a first set of modulation and coding strategies comprises:

when the deployment mode is in-band deployment, the configuration range of the modulation and coding strategy is modulation and coding strategy indexes from 0 to 16+ N or from 0 to 17+ N, wherein N is a positive integer greater than or equal to 4.

8. The method of claim 1, wherein configuring a modulation and coding scheme for data based on a first set of modulation and coding schemes comprises:

when the higher layer configuration parameter L1 indicates that 16qam is not supported, the modulation and coding strategy is configured in the range of modulation and coding strategy indices 0 to 13.

9. The method of claim 1, wherein configuring a modulation and coding scheme for data based on a first set of modulation and coding schemes comprises:

when the high-layer configuration parameter L1 indicates that 16-quadrature amplitude modulation is supported, configuring a modulation and coding strategy for data based on a first modulation and coding strategy set;

wherein the maximum number of repetitions of the physical shared channel corresponding to the data is less than or equal to 128.

10. The method of claim 1, wherein configuring a modulation and coding scheme for data based on a first set of modulation and coding schemes comprises:

when the high-level configuration parameter L1 indicates that 16-ary-amplitude modulation is supported, taking a bit of a repetition number field in the downlink control information as a bit of modulation and coding strategy indication information;

wherein the modulation and coding strategy indication information is used for indicating one modulation and coding strategy in the first modulation and coding strategy set.

11. A method of power configuration, the method comprising:

12. The method of claim 11, wherein the first symbol average power and the second symbol average power are equal.

13. The method of claim 11, further comprising:

determining the first symbol average power according to the average power of the reference signal resource particles and a power offset value A;

the power offset value a is a logarithmic value of a ratio of an average power of the physical shared channel resource element over the first symbol to an average power of the reference signal resource element.

14. The method of claim 13, wherein the power offset value a is determined by a higher layer configuration parameter L2 in NB-IoT.

15. The method of any one of claims 11, 13 or 14, further comprising:

when the higher layer configuration parameter L1 indicates that 16 quadrature amplitude modulation is supported, the higher layer configuration parameter L2 is configured.

16. The method of any one of claims 11, 13 or 14, further comprising:

the first communication node sends a higher layer configuration parameter L3 to the second communication node, said higher layer configuration parameter L3 indicating whether said higher layer configuration parameter L2 is configured.

17. An apparatus for configuring a modulation and coding scheme, comprising:

18. A power configuration apparatus, comprising:

19. An apparatus, characterized in that the apparatus comprises:

one or more processors;

a memory for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement a method of configuring a modulation and coding scheme or a method of configuring power as claimed in any of claims 1-16.

20. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method for configuring a modulation and coding scheme or a method for configuring power according to any one of claims 1 to 16.