CN113852577B

CN113852577B - Wireless communication method and communication device

Info

Publication number: CN113852577B
Application number: CN202010597323.9A
Authority: CN
Inventors: 苏俞婉; 杨育波; 罗之虎; 李军; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2023-07-21
Anticipated expiration: 2040-06-28
Also published as: CN113852577A; WO2022001781A1

Abstract

The application provides a wireless communication method and a communication device, wherein the method comprises the following steps: the communication device determining first control information for scheduling first data, the first control information including a first field and a second field, the first field including M bits, the first field being for indicating first scheduling information of the first data when the first field indicates a first status value; when the N bits in the first field indicate a second status value, at least one bit in the second field and/or bits in the first field other than the N bits are used to indicate the first scheduling information, wherein N, M is a positive integer, N is less than or equal to M; the communication device receives or transmits the first data according to the first control information. In order to increase the flexibility of the control information indication while avoiding an increase in the number of control information bits.

Description

Wireless communication method and communication device

Technical Field

The present application relates to the field of communications, and more particularly, to a wireless communication method and a communication apparatus.

Background

With the continuous development of wireless communication technology, mobile communication has been widely applied in various fields, for example, the internet of things is an important component of future communication networks, and is mainly applied to intelligent meter reading, medical monitoring, industrial detection monitoring, internet of vehicles, intelligent communities, wearable devices and the like. The requirements of different application scenes on the time delay, the speed and the reliability of communication are different. The control information is used as scheduling information of data, firstly, the correct transmission of the control information is the premise of the correct transmission of the data, and secondly, the control information needs to have enough indication flexibility to meet the communication service requirements in different application scenes. For example, in a high rate requirement scenario, the control information may indicate a mimo transmission mode or a modulation mode with a high modulation order, and, for example, in a high reliability requirement scenario, the control information may indicate repeated data transmission to ensure the reliability of data transmission. Currently, in the narrowband internet of things (narrow band internet of things, NB-IoT), the downlink supported modulation mode is quadrature phase shift keying (quadrature phase shift keying, QPSK), and the uplink supported modulation mode is binary phase shift keying (binary phase shift keying, BPSK) and QPSK, so that the low-speed internet of things service can be supported. NB-IoT R17 contemplates introducing high order modulation, such as 16quadrature amplitude modulation (16quadrature amplitude modulation,16QAM), to boost data transmission rates to support higher speed internet of things traffic. How to instruct the scheduling of high-order modulation by downlink control information and how to improve the flexibility of control information instruction on the premise of ensuring the reliability of control information transmission are hot spots studied by the technicians in the field.

Disclosure of Invention

The present application provides a wireless communication method and a communication apparatus in order to improve flexibility of control information indication while avoiding an increase in the number of control information bits.

In a first aspect, a wireless communication method is provided, which may be performed by a network device or a module (e.g. a chip) configured (or for) the network device, or which may be performed by a terminal device or a module (e.g. a chip) configured (or for) the terminal device.

The method comprises the following steps: determining first control information, wherein the first control information is used for scheduling first data, the first control information comprises a first field and a second field, the first field comprises M bits, and when the first field indicates a first state value, the first field is used for indicating first scheduling information of the first data; when N bits in the first field indicate a second status value, at least one bit in the second field and/or bits in the first field other than the N bits are used to indicate the first scheduling information, wherein N, M is a positive integer, and N is less than or equal to M; and receiving or transmitting the first data according to the first control information.

According to the above scheme, the indication range of the first control information to the first scheduling information can be increased without increasing the number of control information bits, for example, the first control information is at 2 which can indicate the first scheduling information ^M The possible values of more first scheduling information can be indicated on the basis of the possible values, so that the flexibility of control information indication is improved.

In a second aspect, there is provided a communication apparatus which is a network device or a module (e.g. a chip) arranged (or for) a network device, which is a terminal device or a module (e.g. a chip) arranged (or for) a terminal device, comprising: a processing unit, configured to determine first control information, where the first control information is used to schedule first data, the first control information includes a first field and a second field, the first field includes M bits, and when the first field indicates a first state value, the first field is used to indicate first scheduling information of the first data; when N bits in the first field indicate a second status value, at least one bit in the second field and/or bits in the first field other than the N bits are used to indicate the first scheduling information, wherein N, M is a positive integer, and N is less than or equal to M; the processing unit is further configured to control the transceiver unit to receive or transmit the first data according to the first control information.

With reference to the first aspect or the second aspect, in some implementations of the first aspect or the second aspect, the first scheduling information is a modulation coding mode of the first data, where when the first field indicates the first state value, the first scheduling information is a first modulation coding mode; and when the N bits in the first field indicate the second state value, the first scheduling information is in a second modulation coding mode.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when the first field indicates the first status value, the second field is used to indicate second scheduling information of the first data and/or a repetition number of the first control information.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when N bits in the first field indicate the second state value, bits in the first field other than the N bits and/or at least one bit in the second field are specifically used to indicate the first scheduling information and at least one of the following: the second scheduling information of the first data or the repetition number of the first control information.

With reference to the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, bits other than the N bits in the first field and/or at least one bit in the second field collectively indicate a third status value, the third status value corresponding to one value of the first scheduling information and at least one of: a value of the second scheduling information or a value of the number of repetitions of the first control information.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when N bits in the first field indicate the second status value, at least one bit in the second field is used to indicate the first scheduling information, and bits in the first field other than the N bits are used to indicate second scheduling information of the first data and/or a repetition number of the first control information.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when N bits in the first field indicate the second status value, the second field further includes at least one bit for indicating second scheduling information of the first data and/or a repetition number of the first control information.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, the first control information further includes a third field, where when the first field indicates the first status value, the second field is used to indicate second scheduling information of the first data, the third field is used to indicate a number of repetitions of the first control information, or the second field is used to indicate a number of repetitions of the first control information, and the third field is used to indicate second scheduling information of the first data.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when N bits in the first field indicate the second status value, the third field is used to indicate a number of repetitions of the second scheduling information and/or the first control information.

With reference to the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, when N bits in the first field indicate the second status value, bits in the first field other than the N bits, at least one bit in the second field, and at least one bit in the third field are specifically used to indicate the first scheduling information and at least one of: the second scheduling information of the first data or the repetition number of the first control information.

With reference to the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, the bits other than the N bits in the first field, the at least one bit in the second field, and the at least one bit in the third field collectively indicate a fourth state value, the fourth state value corresponding to one value of the first scheduling information and at least one of: a value of the second scheduling information or a value of the number of repetitions of the first control information.

With reference to the first aspect or the second aspect, in certain implementation manners of the first aspect or the second aspect, when N bits in the first field are used to indicate the second status value, the second status value corresponds to one value of second scheduling information of the first data and/or one value of a repetition number of first control information, and indicates at least one bit in the second field is used to indicate the first scheduling information, and at least one bit in the second field is used to indicate the first scheduling information.

With reference to the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, the second scheduling information is a number of repetitions of the first data.

With reference to the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, the second state value is "1110" or "1111", where N is equal to M, or the second state value is "111", where N is less than M.

In a third aspect, a wireless communication method is provided, which may be performed by a network device or a module (e.g. a chip) configured (or for) a network device, or which may be performed by a terminal device or a module (e.g. a chip) configured (or for) a terminal device.

The method comprises the following steps: determining first control information, wherein the first control information is used for scheduling first data, the first control information comprises a first field and a second field, the first field is used for indicating a modulation coding mode of the first data, and the second field is used for indicating second scheduling information of the first data; when the second field indicates a first status value, the first field is used for indicating the first modulation coding mode, wherein the first status value corresponds to one value of the second scheduling information; when the second field indicates a second status value, the first field is used for indicating the second modulation coding mode, where the second status value corresponds to one value of the second scheduling information, the modulation order corresponding to the first modulation coding mode is 1 or 2, and the modulation order corresponding to the second modulation coding mode is 4 or 6; and receiving or transmitting the first data according to the first control information.

According to the scheme, when the second state value is indicated in the second field in the first control information, the communication device indicates the second modulation coding mode through the first control information, and the modulation order corresponding to the second modulation coding mode is 4 or 6, so that the control information can indicate possible values of more modulation coding modes, and the flexibility of control information indication is improved.

In a fourth aspect, there is provided a communication apparatus which is a network device or a module (e.g. a chip) arranged (or for) a network device, which is a terminal device or a module (e.g. a chip) arranged (or for) a terminal device, comprising: the processing unit is used for determining first control information, wherein the first control information is used for scheduling first data, the first control information comprises a first field and a second field, the first field is used for indicating a modulation coding mode of the first data, and the second field is used for indicating second scheduling information of the first data; when the second field indicates a first status value, the first field is used for indicating the first modulation coding mode, wherein the first status value corresponds to one value of the second scheduling information; when the second field indicates a second status value, the first field is used for indicating the second modulation coding mode, where the second status value corresponds to one value of the second scheduling information, the modulation order corresponding to the first modulation coding mode is 1 or 2, and the modulation order corresponding to the second modulation coding mode is 4 or 6; the processing unit is further configured to control the transceiver unit to receive or transmit the first data according to the first control information.

With reference to the third aspect or the fourth aspect, in some implementations of the third aspect or the fourth aspect, the first state value is one state value in a first set, the second state value is one state value in a second set, and the first set and the second set have no intersection.

With reference to the third aspect or the fourth aspect, in some implementations of the third aspect or the fourth aspect, the second scheduling information is subcarrier scheduling indication information.

In a fifth aspect, a wireless communication method is provided, which may be performed by a network device or a module (e.g. a chip) configured (or for) the network device, or which may be performed by a terminal device or a module (e.g. a chip) configured (or for) the terminal device.

The method comprises the following steps: determining first control information, wherein the first control information is used for scheduling first data, the first control information comprises a first field, the first field is used for indicating scheduling information of the first data, and the scheduling information of the first data comprises at least two of the following scheduling information: modulation coding mode, repetition frequency of the first data, repetition frequency of the first control information or subcarrier scheduling indication information; and receiving or transmitting the first data according to the first control information.

According to the above scheme, when the communication device indicates at least two items of the modulation coding scheme, the number of repetitions of data, the number of repetitions of the first control information, or the subcarrier scheduling indication information through the first field in the first control information, the communication device can occupy a smaller number of bits than the indication scheme in the prior art, thereby reducing the bit number overhead of the control information.

In a sixth aspect, there is provided a communication apparatus which is a network device or a module (e.g. a chip) arranged (or for) a network device, which is a terminal device or a module (e.g. a chip) arranged (or for) a terminal device, comprising: the processing unit is configured to determine first control information, where the first control information is used for scheduling first data, the first control information includes a first field, the first field is used for indicating scheduling information of the first data, and the scheduling information of the first data includes at least two of the following scheduling information: modulation coding mode, repetition frequency of the first data, repetition frequency of the first control information or subcarrier scheduling indication information; the processing unit is further configured to control the transceiver unit to receive or transmit the first data according to the first control information.

With reference to the fifth aspect or the sixth aspect, in some implementations of the fifth aspect or the sixth aspect, the first field is used to indicate a first status value, where the first status value corresponds to a value of scheduling information of the first data.

In a seventh aspect, a wireless communication method is provided, which may be performed by a network device or a module (e.g., a chip) configured in (or for) the network device.

The method comprises the following steps: the network equipment determines a first power ratio and a second power ratio, wherein the first power ratio is a ratio of power of a first reference signal to power of a first data signal in an OFDM symbol containing a first reference signal, and the second power ratio is a ratio of power of a second reference signal to power of a second data signal in an OFDM symbol containing a second reference signal, and the OFDM symbol containing the first reference signal and the OFDM symbol containing the second reference signal are different OFDM symbols in the same subframe; the network device sends the first power ratio and the second power ratio to the terminal device.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first reference signal is a narrowband reference signal and the second reference signal is an LTE cell reference signal.

With reference to the seventh aspect, in some implementations of the seventh aspect, the terminal device is a terminal device supporting a 16QAM modulation mode.

In an eighth aspect, a wireless communication method is provided, which may be performed by a terminal device or a module (e.g. a chip) configured in (or for) the terminal device.

The terminal equipment receives the first power ratio and the second power ratio, wherein the first power ratio is the ratio of the power of a first reference signal to the power of a first data signal in OFDM symbols containing a first reference signal, the second power ratio is the ratio of the power of a second reference signal to the power of a second data signal in OFDM symbols containing a second reference signal, and the OFDM symbols containing the first reference signal and the OFDM symbols containing the second reference signal are different OFDM symbols in the same subframe; the terminal device determines the power of the first reference signal and/or the power of the first data signal according to the first power ratio, and the terminal device determines the power of the second reference signal and/or the power of the second data signal according to the second power ratio.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first reference signal is a narrowband reference signal and the second reference signal is an LTE cell reference signal.

With reference to the eighth aspect, in some implementations of the eighth aspect, the terminal device is a terminal device supporting a 16QAM modulation scheme.

A ninth aspect provides a communications apparatus comprising means or units for performing the method of the first, third, fifth, seventh, eighth aspects and any one of the possible implementations of the first, third, fifth, seventh, eighth aspects.

In a tenth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute instructions in the memory to implement the method of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect and any one of the possible implementation manners of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface.

In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the terminal device. When the communication means is a chip arranged in the terminal device, the communication interface may be an input/output interface.

In another implementation, the communication apparatus is a network device. When the communication apparatus is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in a network device. When the communication means is a chip arranged in the terminal device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In an eleventh aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect, and any one of the possible implementation manners of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect.

In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.

In a twelfth aspect, a processing device is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and is configured to receive a signal via the receiver and to transmit a signal via the transmitter to perform the method of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect and any one of the possible implementations of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the eighth aspect.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor or the memory may be separate from the processor.

In a specific implementation process, the memory may be a non-transient (non-transitory) memory, for example, a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

It should be appreciated that the related data interaction process, for example, transmitting the indication information, may be a process of outputting the indication information from the processor, and the receiving the capability information may be a process of receiving the input capability information by the processor. Specifically, the data output by the processor may be output to the transmitter, and the input data received by the processor may be from the receiver. Wherein the transmitter and receiver may be collectively referred to as a transceiver.

The processing means in the twelfth aspect may be one or more chips. The processor in the processing device may be implemented by hardware or may be implemented by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor, implemented by reading software code stored in a memory, which may be integrated in the processor, or may reside outside the processor, and exist separately.

In a thirteenth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method of the above and any one of the possible implementations of the first, third, fifth, seventh, eighth and first, third, fifth, seventh and eighth aspects.

In a fourteenth aspect, there is provided a computer readable medium storing a computer program (which may also be referred to as code, or instructions) which when run on a computer causes the computer to perform the above and the first, third, fifth, seventh, eighth aspects and any one of the possible implementations of the first, third, fifth, seventh, eighth aspects.

A fifteenth aspect provides a communication system comprising the aforementioned network device and terminal device.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system suitable for use in embodiments of the present application.

Fig. 2 is a schematic diagram illustrating an example of DCI according to an embodiment of the present application.

Fig. 3 is another illustration of DCI provided in an embodiment of the present application.

Fig. 4 is a schematic diagram illustrating an example of a DCI indication method according to an embodiment of the present application.

Fig. 5 is another exemplary illustration of an indication manner of DCI provided in an embodiment of the present application.

Fig. 6 is another exemplary illustration of an indication manner of DCI provided in an embodiment of the present application.

Fig. 7 is another exemplary view of an indication manner of DCI provided in an embodiment of the present application.

Fig. 8 is another exemplary view of an indication manner of DCI provided in an embodiment of the present application.

Fig. 9 is another exemplary view of an indication manner of DCI provided in an embodiment of the present application.

Fig. 10 is a schematic flow chart of a wireless communication method according to an embodiment of the present application.

Fig. 11 is another schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 12 is a schematic block diagram of an example of a communication device of the present application.

Fig. 13 is a schematic configuration diagram of an example of the terminal device of the present application.

Fig. 14 is a schematic configuration diagram of an example of a network device of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (global system formobile communications, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA) systems, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, satellite communication systems, fifth generation (5th generation,5G) systems or New Radio (NR), and future communication systems. vehicle-to-X V2X, where V2X may include vehicle-to-internet (vehicle to network, V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (vehicle to infrastructure, V2I), vehicle-to-pedestrian (vehicle to pedestrian, V2P), etc., long term evolution of plant communications (long term evolution-vehicle, LTE-V), internet of vehicles, machine-type communications (machine type communication, MTC), internet of things (internet of things, ioT), long term evolution of machine-to-machine (long term evolution-machine, LTE-M), device-to-device (D2D), machine-to-machine (machine to machine, M2M), etc.

Fig. 1 is a schematic diagram of a wireless communication system suitable for use in embodiments of the present application.

As shown in fig. 1, the wireless communication system may include at least one network device, such as the network device shown in fig. 1. The wireless communication system may also include at least one terminal device, such as the terminal device shown in fig. 1. Wireless connection can be established between the terminal equipment and the network equipment and between the terminal equipment and the terminal equipment for wireless communication, and the sending equipment can indicate the scheduling information of the data through the control information so that the receiving equipment can correctly receive the data according to the control information.

The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned driving (self driving), a wireless terminal in a remote medical (remote medium), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a smart city (smart city) or an evolved-from-to-land (PLMN) network, a public network (PLMN) or the like.

The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wearing and developing wearable devices by applying a wearable technology, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

Furthermore, the terminal device may also be a terminal device in an internet of things (internet of things, ioT) system. IoT is an important component of future information technology development, and its main technical feature is to connect an item with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for object interconnection.

It should be understood that the present application is not limited to a specific form of terminal device.

The network device in the embodiment of the present application may be any device having a wireless transceiver function. The apparatus includes, but is not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a Home base station (e.g., home evolved nodeB, or Home Node B, HNB), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), and the like, and may also be devices that assume functions of network devices in satellite communications, V2X, D2D, M M, and in internet of vehicles communications. Alternatively, the base station may be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group (including a plurality of antenna panels) of antenna panels of a base station in a 5G system, or may be a network node, such as a baseband unit (BBU), or a Distributed Unit (DU), which forms the gNB or the transmission point.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, abbreviated as AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB, e.g. the CU is responsible for handling non-real time protocols and services, implementing radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer functions. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The network device provides services for the cell, and the terminal device communicates with the cell through transmission resources (e.g., frequency domain resources, or spectrum resources) allocated by the network device, where the cell may belong to a macro base station (e.g., macro eNB or macro gNB, etc.), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

With the expansion of application scenes, the communication demands are increasing accordingly. For example, the application scenes of the internet of things are various, including from outdoor to indoor and from ground to underground, so that higher requirements are put forward on the design of the internet of things:

coverage enhancement: many IoT terminals are in environments with poor coverage, such as electricity meter water meters, and are usually installed in rooms and even in basements where wireless network signals are poor, so coverage enhancement techniques are needed to solve the problem of poor coverage communication quality;

the number of terminals is huge: the number of IoT devices is far greater than the number of devices that people communicate with;

The service rate requirement is low, and the time delay is insensitive: the data packets transmitted by IoT devices are generally small and delay insensitive;

very low cost: many IoT applications require very low terminal equipment costs for large-scale deployment;

low power consumption: in most cases, ioT devices are powered by batteries and are required to be able to be used for more than ten years without requiring battery replacement, which requires the IoT devices to be able to operate with very low power consumption.

To meet these higher demands, the mobile communication standardization organization third generation partnership project (3rd generation partnership project,3GPP) has passed a new research topic on geran#62 conferences, investigated methods to support very low complexity and low cost internet of things in cellular networks, and set aside as NB-IoT topic on ran#69 conferences.

In particular, it is desirable to enhance the design of individual channels, signals, over existing communication schemes to meet higher demands. For example, currently, the modulation mode supported by NB-IoT downlink is quadrature phase shift keying (quadrature phase shift keying, QPSK), and the modulation mode supported by uplink is binary phase shift keying (binary phase shift keying, BPSK) and QPSK, so that the low-speed internet of things service can be supported. However, in order to increase the data transmission rate, the 17 th edition of NB-IoT considers to introduce higher order modulation modes, such as 16quadrature amplitude modulation (16quadrature amplitude modulation,16QAM), 64QAM, etc., to support higher-speed internet of things services. This requires design enhancements to the downlink control information (downlink control information, DCI) to support the modulation scheme that it indicates higher order.

In NB-IoT, the uplink data scheduling information is indicated by DCI in format (format) N0, and each indication field (or referred to as field) and the number of bits in the DCI format N0 are shown in table 1. Which includes a 4-bit modulation coding scheme (modulation and coding scheme, MCS) field for indicating the modulation order and transport block size (transport block size, TBS) index values. Specifically, when the subcarrier indication field indicates that 1 subcarrier is scheduled, the MCS field indicates a modulation order corresponding to one index value and a TBS index value by indicating the index value in table 2. Wherein the TBS index value corresponds to Table 3, the TBS index value being combined with the I indicated by the resource allocation domain _RU One TBS in table 3 may be determined. When the subcarrier indication field indicates that 3, 6 or 12 subcarriers are scheduled, the MCS index value indicated by the MCS field is equal to the TBS index value, and the modulation order is 2, for example, as shown in table 5.

TABLE 1

Indication field in DCI Format N0	Number of bits
		Identification field distinguishing format N0 or format N1	1
Subcarrier indication field	6
		Resource allocation domain	3
Scheduling delay domain	2
		MCS field	4
Redundancy version (Redundancy Version, RV) domain	1
		Repeating the number domain	3
New data indication field	1
		DCI repetition number field	2

TABLE 2

MCS index value	Modulation order	TBS index value
			0	1	0
1	1	2
			2	2	1
3	2	3
			4	2	4
5	2	5
			6	2	6
7	2	7
			8	2	8
9	2	9
			10	2	10

TABLE 3 Table 3

Similarly, downlink data scheduling information in NB-IoT is indicated by DCI of format N1, and the respective indication fields and bits in DCI format N1 are shown in table 4. Wherein includes a 4-bit MCS field indicating a modulation order corresponding to an index value in Table 5 by indicating the index value and a TBS index value corresponding to Table 6, the TBS index value corresponding to the I indicated by the resource allocation field _SF In combination, one TBS in table 6 can be determined.

TABLE 4 Table 4

TABLE 5

MCS index value	Modulation order	TBS index value
			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

TABLE 6

In order to enable the DCI format N0 or the DCI format N1 to indicate a higher order modulation scheme, the DCI may be enhanced in the following manner one to four. It should be noted that, in the following description, only the range in which the DCI indicates the modulation order is taken as an example, the method provided in the embodiment of the present application may also be applied to enhancing other scheduling information or indication information, which is not limited in this application.

Mode one

An indication domain is added in the DCI, and the indication domain is used for indicating an index table corresponding to the MCS domain. For example, a 1-bit indication field is added to DCI, and when the 1-bit indication is "0", an index table corresponding to the MCS field is indicated as an index table a, that is, when the 1-bit indication is "0", an index value indicating that the MCS field is indicated as an index value in the index table a, for example, the index table a may be table 2 or table 5 in the prior art. When the 1 bit indicates "1", it indicates that the index table corresponding to the MCS field is the index table B, that is, when the 1 bit indicates "0", it indicates that the index value indicated by the MCS field is the index value in the index table B, and the modulation order in the index table B is different from the modulation order in the index table a. For example, the index table B may include a modulation scheme of 16QAM, that is, a modulation order of 4, and the index table B may be as shown in table 7, but the present application is not limited thereto. In the first mode, the index table a and the index table B may be different portions in the index table C, the first portion is the index table a, the second portion is the index table B, when the 1 bit indicates "0", the MCS field indicates an index value corresponding to the first portion, and when the 1 bit indicates "1", the MCS field indicates an index value corresponding to the second portion.

TABLE 7

MCS index	Modulation order	TBS index
			0	4	10
1	4	11
			…	…	…
13	4	23

Table 7 is one example of supporting an index table B, which may alternatively correspond to a deployment mode.

For example, NB-IoT includes three deployment modes, guard-band, stand-alone, in-band. In the case that the DCI is DCI Format N1 for scheduling downlink data, when the deployment mode is Guard-band or Stand-alone, the index table B may be as shown in table 7 (a); when the deployment mode is In-band, the index table B may be as shown In table 7 (B), but the present application is not limited thereto.

Table 7 (a)

MCS index	Modulation order	TBS index
			0	4	15
1	4	16
			…	…	…
8	4	23

Table 7 (b)

MCS index	Modulation order	TBS index
			0	4	12
1	4	13
			…	…	…
6	4	18

When the DCI is DCI Format N0 for scheduling uplink data, the index table B may be as shown in table 7 (c).

Table 7 (c)

MCS index	Modulation order	TBS index
			0	4	12
1	4	13
			…	…	…
9	4	21

Mode two

The number of bits of the MCS field in the DCI is increased to increase the indication range of the MCS field. For example, the MCS field is increased by 1 bit, i.e., the MCS field is 5 bits total to indicate the modulation order and TBS index. The original 4-bit MSC domain can indicate 16 modulation coding schemes, that is, 16 modulation orders and TBS index values are combined, and the 5-bit MCS domain can indicate 32 modulation coding schemes after adding 1 bit. For example, the index table corresponding to the MCS field may include 23 alternative modulation and coding schemes as shown in table 8, but the present application is not limited thereto.

TABLE 8

MCS index	Modulation order	TBS index
			0	2	0
1	2	1
			…	…	…
23	4	23

Table 8 is an example of an index table corresponding to an MCS field, which may correspond to a deployment mode.

For example, NB-IoT includes three deployment modes, guard-band, stand-alone, in-band. When the DCI Format is DCI Format N1 for scheduling downlink data and the deployment mode is Guard-band or Stand-alone, an index table corresponding to an MCS field in the DCI Format N1 may be as shown in table 8 (a); when the deployment mode is In-band, the index table corresponding to the MCS field In the DCI Format N1 may be as shown In table 8 (b).

Table 8 (a)

MCS index	Modulation order	TBS index
			0	2	0
1	2	1
			…	…	…
15	2	15
			16	4	15
17	4	16
			…	…	…
24	4	23

Table 8 (b)

MCS index	Modulation order	TBS index
			0	2	0
1	2	1
			…	…	…
12	2	12
			13	4	12
14	4	13
			…	…	…
19	4	18

When the Format of the DCI is DCI Format N0 for scheduling uplink data, the more specific Format of the index table corresponding to the MCS field in the DCI Format N0 may be as shown in table 8 (c).

Table 8 (c)

MCS index	Modulation order	TBS index
			0	2	0
1	2	1
			…	…	…
12	2	12
			13	4	12
14	4	13
			…	…	…
22	4	21

In addition, with supporting higher modulation orders, the TBS index table may be correspondingly increased with a plurality of optional TBSs, for example, the uplink TBS index table may be increased with TBS index values 14 to 21, and the corresponding TBS values may be as shown in table 9, but the application is not limited thereto. For another example, the downlink TBS index table may be increased by TBS index values 14 to 23, and the corresponding TBS values may be as shown in table 10, but the present application is not limited thereto.

TABLE 9

Table 10

Mode three

And (3) maintaining a 4-bit MCS domain in the DCI, and adjusting the content in an index table corresponding to the MCS domain. That is, the modulation and coding scheme corresponding to the index value indicated by the MSC domain is adjusted so that the index values 0 to 15 indicated by the 4 bits include the modulation scheme corresponding to the higher order modulation, and the corresponding TBS index is indicated, for example, one index value in table 8, and the index table corresponding to the MCS domain may be as shown in table 11.

TABLE 11

MCS index	Modulation order	TBS index
			0	2	0
1	2	2
			…	…	…
15	4	23

Mode four

4 bits of the MCS field in the DCI are reassigned with N bits of another field, for example, 4 bits of the MCS field in the DCI are reassigned with 4 bits of the repetition number field indicating the number of data repetitions in the DCI, for a total of 8 bits. For example, the 8 bits may include an MCS field of 5 bits and a repetition number field of 3 bits. The 5-bit MCS field may indicate an index value in an index table as shown in table 8, for example, but the present application is not limited thereto. The number of repetitions of 3 bits may indicate a value of 8 repetitions, for example, 8 repetitions may be selected from the 16 repetitions indicated in the original 4-bit repetition field to form an index table. The number of repetition times may be defined as a number of repetition times, some or all of which are defined as redefined values, and the present application is not limited thereto.

According to the above manner, it is possible to implement that the control information indicates a more value range of one scheduling information, for example, on the basis that the prior art may indicate BPSK or QPSK, the MCS field in the DCI may also indicate a higher order modulation mode, such as 16QAM or 64 QAM.

The embodiment of the application also provides a design mode of the following control information. The method can avoid increasing the cost of the control information and ensure the indication flexibility of the existing control information on the basis of realizing the more value ranges of the control information indicating one scheduling information in the first to fourth design modes.

Mode five

The DCI for scheduling the first data (i.e., an example of the first control information) includes a first field including M bits and a second field including K bits, as shown in fig. 2. Wherein M, K is an integer of 1 or more. The method comprises the steps of,

when the first field indicates a first status value, the first field is used for indicating first scheduling information of the first data, and the second field is used for indicating second scheduling information of the first data and/or repetition times of the DCI;

when N bits in the first field indicate a second status value, at least one bit in the second field and/or bits in the first field other than the N bits are used to indicate the first scheduling information, N is an integer greater than 1 and less than or equal to M.

In one embodiment, the first scheduling information is an MCS. When the first field indicates a first status value, the first field is used to indicate a first MCS; when the N bits in the first field indicate a second status value, at least one bit in the second field and/or bits in the first field other than the N bits indicate a second MCS. Wherein, the modulation orders corresponding to the first MCS and the second MCS are different.

For example, the first field includes a as described in FIG. 3 ₁ 、a ₂ 、a ₃ 、a ₄ The first state value may be one of index values 0000 to 1101 in table 5 for a total of 4 bits. That is, when 4 bits of the first field indicate one value (the value is the first state value) of 0000 to 1101, the first field is used to indicate the modulation scheme (i.e., QPSK) and TBS index value corresponding to the first state value in table 5. When N bits in the first field indicate the second state value, the N bits may be, for example, the first 3 bits a in the first field ₁ 、a ₂ 、a ₃ When the 3 bits indicate 111, or the N bits may be the first field a ₁ 、a ₂ 、a ₃ 、a ₄ A total of 4 bits, and when the 4 bits indicate 1110 or 1111, L bits in the DCI other than the N bits in the first field are used to indicate a combination of a higher modulation order of 16QAM, 64QAM, etc. and a TBS index value. That is, when the first field does not indicate one of 0000 to 1101, L bits other than the N bits in the first field in the DCI are used to indicate a combination of a higher modulation order of 16QAM, 64QAM, etc. and a TBS index value. Wherein the L bits may include at least one bit in the second field and/or bits of the first field other than the N bits. The L bits may indicate one index value in an index table as shown in table 7, but the present application is not limited thereto.

According to the scheme, on the basis that the MCS domain in the DCI in the prior art can indicate 14 combinations of QPSK and TBS index values in table 5, the DCI can be indicated to a combination of a higher modulation order and a TBS index value by the method provided by the application. That is, in the fifth mode, 1 bit is not added to the DCI in comparison with the first mode and the second mode, and the lower the bit number in the DCI, the lower the code rate, the higher the reliability of the DCI, and the higher the probability that the DCI is decoded correctly. Mode three uses a 4-bit MCS field indicating only 16 of the index values of the 32 modulation coding schemes in table 8, and the MCS field is highly likely to be unable to indicate a part of the 14 modulation coding schemes corresponding to QPSK in table 5, that is, mode three cannot support a part of the modulation coding schemes in table 5, as compared with the prior art. In contrast to the third mode, the fifth mode may support all modulation and coding modes in table 5, or may support a combination of 16 higher order modulation modes and TBS index values when N bits in the first field indicate the second status value, and the number of bits is not newly added to the DCI. Mode four reallocates 4 bits of the MCS field in the DCI with N bits (e.g., 4-bit repetition number field) of another field, so that the reallocated MCS field is 5 bits and the other field is N-1 bits, so mode four cannot indicate some configurations of the other field. Compared with the fourth mode, the fifth mode can support not only that the other field in the DCI is N bits, but also that when the N bits in the first field indicate the second state value, the combination of 16 higher order modulation modes and TBS index values is supported, and the number of bits is not increased in the DCI. In summary, the scheme of the fifth mode provided in the present application can support higher-order modulation scheduling based on the prior art, without increasing the number of bits of DCI, and can support all possible configurations of MCS, data repetition number, and the like in the prior art.

In this mode five, when N bits in the first field indicate the second status value, the manner in which the DCI indicates the first scheduling information may include, but is not limited to, the following possibilities:

possibly 1, when N bits in the first field indicate a second status value, at least one bit in the second field is used to indicate the first scheduling information. Wherein the possible 1 may include, but is not limited to, the following embodiments:

in one embodiment, bits other than N bits in the first field are used to indicate the second scheduling information and/or the repetition number of the DCI, where N is less than M.

For example, the first scheduling information is MCS, and the second scheduling information is the number of repetitions of the first data. As shown in fig. 4, the DCI includes a first field of 4 bits and 4 bitsA second field for indicating a first MCS when the first field in the DCI indicates a first status value (e.g., one of 0000 to 1101), the second field in the DCI for indicating the number of repetitions of the first data; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ When 111 is indicated, 4 bits b of the second field ₁ 、b ₂ 、b ₃ 、b ₄ For indicating a second MCS, bits other than the N bits in the first field, bit a ₄ For indicating the number of repetitions of the first data, but the present application is not limited thereto.

For another example, the first scheduling information is MCS and the second scheduling information is the number of repetitions of the first data. As shown in fig. 4, the DCI includes a first field of 4 bits and a second field of 4 bits, where when the first field in the DCI indicates a first status value, the first field is used to indicate a first MCS, and the second field in the DCI is used to indicate a number of repetitions of the first data and/or a number of repetitions of the DCI; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ When 111 is indicated, 4 bits b of the second field ₁ 、b ₂ 、b ₃ 、b ₄ For indicating a second MCS, bits other than the N bits in the first field, bit a ₄ For indicating the number of repetitions of the first data and the number of repetitions of the DCI. a, a ₄ An index value may be indicated, each corresponding to one value of the number of repetitions of the first data and one value of the number of repetitions of the DCI. As shown in Table 12 a ₄ When "0" is indicated, it indicates that the number of repetitions of the first data is 1 and the number of repetitions of the DCI is 1, a ₄ When "1" is indicated, the number of repetitions of the first data is 2 and the number of repetitions of the DCI is 4, but the present application is not limited thereto.

Table 12

a ₄	Number of repetitions of first data	Number of repetition of DCI
			0	1	1
1	2	4

In another embodiment, the second status value indicated by the N bits in the first field may correspond to a value of second scheduling information of the first data and/or a value of a repetition number of the first control information, and indicate that at least one bit in the second field is used to indicate the first scheduling information, and at least one bit in the second field is used to indicate the first scheduling information.

For example, the first scheduling information is MCS, and the second scheduling information is the number of repetitions of the first data. The method comprises the steps that a first field with 4 bits and a second field with 4 bits are included in DCI, when the first field in the DCI indicates a first state value, the first field is used for indicating a first MCS, and the second field in the DCI is used for indicating the repetition number of the first data and/or the repetition number of the DCI; when the first field in DCI indicates 1110, at least one bit in the second field is indicated to indicate the first scheduling information and the number of repetitions of the first data is 1, and when the first field in DCI indicates 1111, at least one bit in the second field is indicated to indicate the first scheduling information and the number of repetitions of the first data is 2, but the present application is not limited thereto.

In another embodiment, the second field further includes at least one bit for indicating second scheduling information and/or the repetition number of the DCI in addition to at least one bit for indicating the first scheduling information.

For example, as shown in fig. 5, the first scheduling information is an MCS, the DCI includes a first field with 4 bits and a second field with 4 bits, and when the first field in the DCI indicates a first status value, the first field is used to indicate the first MCS, and the second field in the DCI is used to indicate the second scheduling information; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ When 111 is indicated, a in the first field ₄ And b in the second field ₁ 、b ₂ 、b ₃ A total of 4 bits for indicating a second MCS, and dividing b for indicating the second MCS in the second field ₁ 、b ₂ 、b ₃ Including a bit b in addition to ₄ For indicating the second scheduling information.

In another embodiment, the DCI further includes a third field, at least one bit in the third field being used to indicate the second scheduling information and/or the number of repetitions of the DCI.

For example, as shown in fig. 6, the first scheduling information is an MCS, the DCI includes a first field with 4 bits, a second field with 4 bits, and a third field with 2 bits, when the first field in the DCI indicates a first status value, the first field is used to indicate the first MCS, the second field in the DCI is used to indicate the second scheduling information, and the third field is used to indicate the repetition number of the DCI; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ At indication 111, or when the first field indicates 1110 or 1111, 4 bits of the second field are used to indicate the second MCS, and the third field is used to indicate the second scheduling information and DCI repetition number. For example, 2 bits c of the third field ₁ 、c ₂ One of 4 index values may be indicated, each of the 4 index values corresponding to one value of the second scheduling information and one value of the DCI repetition number, but the present application is not limited thereto.

In another embodiment, the DCI further includes a third field, and bits other than N bits in the first field and at least one bit in the third field collectively indicate the second scheduling information and/or the number of repetitions of the DCI.

For example, as shown in fig. 7, the first scheduling information is an MCS, the DCI includes a first field with 4 bits, a second field with 4 bits, and a third field with 2 bits, when the first field in the DCI indicates a first status value, the first field is used to indicate the first MCS, the second field in the DCI is used to indicate the second scheduling information, and the third field is used to indicate the repetition number of the DCI; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ Indicating 111, a in the first field ₄ And c in the third field ₁ 、c ₂ A total of 3 bits are used to indicate the second scheduling information and the DCI repetition number, and 4 bits of the second field are used to indicate the second MCS, but the present application is not limited thereto.

In another embodiment, the DCI further includes a third field, where the second field includes at least one bit in addition to at least one bit indicating the first scheduling information, and where the at least one bit in the third field indicates second scheduling information and/or a number of repetitions of the DCI.

Alternatively, the above embodiments of the DCI indicating the second scheduling information and the repetition number of the DCI may be implemented in combination, for example, bits other than N bits in the first field may be used to indicate the second scheduling information, and the second field may include at least one bit other than at least one bit indicating the first scheduling information and the second field may also include at least one bit to indicate the repetition number of the DCI, which is not limited in this application.

In another embodiment, at least one bit in the second field is used to indicate the first scheduling information and the second scheduling information.

For example, the first scheduling information is MCS, the second scheduling information is the number of repetitions of data, the DCI includes a first field of 4 bits and a second field of 4 bits, when the first field indicates a first status value, for example, one of 0000 to 1101, the first field is used to indicate the first MCS, and the second field in the DCI is used to indicate the second scheduling information; when the first 3 bits of the first field in the DCI indicate 111, or also when the first field in the DCI indicates 1110 or 1111, the 4 bits of the second field are used to indicate the second MCS and the second scheduling information, for example, the 4 bits indicate an index value in an index table as shown in table 13, which corresponds to one value of the second MCS (i.e., one value of modulation order and one TBS index value) and one value of the repetition number of the first data. If the index value indicated by the 4 bits is 15, the corresponding modulation order is 4, the tbs index value is 23, and the number of repetitions of the first data is 2, but this is not a limitation of the present application.

TABLE 13

Index value	Modulation order	TBS index value	Number of repetitions of first data
				0	4	15	1
1	4	16	1
				…	…	…	…
15	4	23	2

In another embodiment, at least one bit in the second field is used to indicate the first scheduling information and the number of repetitions of the DCI.

In another embodiment, at least one bit in the second field is used to indicate the first scheduling information, the second scheduling information, and the number of repetitions of the DCI.

For example, as shown in fig. 8, the first scheduling information is MCS, the second scheduling information is the number of repetitions of the first data, the DCI includes a first field with 4 bits and a second field with 4 bits, when the first field in the DCI indicates a first status value, the first field is used to indicate the first MCS, and the second field in the DCI is used to indicate the number of repetitions of the first data and/or the number of repetitions of the DCI; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ Indicating 111, a in the first field ₄ And 5 bits in total of 4 bits of the second field for indicating the second MCS, the number of repetitions of the first data, and the number of DCI repetitions. For example, the 5 bits indicate an index value in table 14 that corresponds to a value of the second MCS (including modulation order and TBS index value), a value of the repetition number of the first data, and a value of the DCI repetition number. For example, the 5 bits indicate 0000, the DCI indicates that the modulation order adopted by the first data is 4, the TBS index value is 0, the repetition number of the first data is 1, and the repetition number of the DCI is 1, but the present application is not limited thereto.

TABLE 14

Index value	Modulation order	TBS index	Number of repetitions of first data	DCI repetition number
					0	4	0	1	1
1	4	2	1	2
					…	…	…	…	…
32	4	23	128	8

Possibly 2, when N bits in the first field indicate the second status value, bits other than the N bits in the first field are used to indicate the first scheduling information.

In the case of possibility 2, when N bits in the first field indicate a second state value, possibility 2 may include, but is not limited to, the following implementations:

in one embodiment, at least one bit in the second field is used to indicate second scheduling information and/or a number of repetitions of the DCI.

In another embodiment, the DCI further includes a third field, at least one bit in the second field and at least one bit in the third field collectively indicating second scheduling information and/or a number of repetitions of the DCI.

Alternatively, the foregoing embodiments of the DCI indicating the second scheduling information and the number of repetitions of the DCI in possible 2 may be implemented in combination with each other, for example, the first embodiment and the second embodiment are combined, at least one bit in the second field in the DCI is used to indicate the number of repetitions of the DCI, and at least one bit in the third field in the DCI is used to indicate the second scheduling information, which is not limited in this application.

In another embodiment, bits other than the N bits in the first field are used to indicate the first scheduling information and the second scheduling information.

In another embodiment, bits other than the N bits in the first field are used to indicate the first scheduling information and the number of repetitions of the DCI.

For example, the first scheduling information is an MCS, and the DCI includes a first field of M bits and a second field of K bits, where the M bits include L bits in addition to the N bits. When M bits of the first field in the DCI indicate a first status value, the first field is used to indicate a first MCS, and a second field in the DCI is used to indicate second scheduling information; when the N bits of the first field indicate the first status value, L bits other than the N bits in the first field are used to indicate the second MCS and the number of repetitions of the DCI. For example, the L bits indicate an index value corresponding to one value of the second MCS (i.e., one value of the modulation order and one TBS index value) and one value of the repetition number of DCI, but this is not limited in this application.

In another embodiment, bits other than the N bits in the first field are used to indicate the first scheduling information, the second scheduling information, and the number of repetitions of the DCI.

Possibly 3, when the N bits in the first field indicate the second status value, at least one bit in the second field and bits other than the N bits in the first field collectively indicate the first scheduling information.

In the case of possibility 3, when N bits in the first field indicate the second state value, possibility 3 may include, but is not limited to, the following implementations:

in one embodiment, the second field includes at least one bit for indicating the second scheduling information and/or the repetition number of the DCI in addition to at least one bit for indicating the first scheduling information.

For example, as shown in fig. 9, the first scheduling information is an MCS, the DCI includes a first field with 4 bits, a second field with 4 bits, and a third field with 2 bits, when the first field in the DCI indicates a first status value, the first field is used to indicate the first MCS, the second field in the DCI is used to indicate the second scheduling information, and the third field is used to indicate the repetition number of the DCI; when the first 3 bits a in the first field in DCI ₁ 、a ₂ 、a ₃ Upon indication 111, the1 bit a in the first field ₄ And the first 3 bits b of the second field ₁ 、b ₂ 、b ₃ For indicating a second MCS, and a last bit b in a second field ₄ And 2 bits c in the third field ₁ 、c ₂ A total of 3 bits are used to indicate the second scheduling information and the DCI repetition number. For example, the 3 bits b ₄ 、c ₁ 、c ₂ An index value corresponding to one value of the second scheduling information and one value of the DCI repetition number may be indicated, but the present application is not limited thereto.

Alternatively, the foregoing embodiments of the DCI in the possible 3 to indicate the second scheduling information and the repetition number of the DCI may be implemented in combination with each other, for example, the first embodiment and the second embodiment are combined, the second field includes at least one bit to indicate the second scheduling information in addition to at least one bit to indicate the first scheduling information, and the third field includes at least one bit to indicate the repetition number of the DCI, which is not limited in this application.

In another embodiment, at least one bit in the second field and bits other than the N bits in the first field collectively indicate the first scheduling information and the second scheduling information.

For example, the first scheduling information is MCS, the second scheduling information is the number of repetitions of data, the DCI includes a first field of 4 bits and a second field of 4 bits, when the first field indicates a first status value, for example, one of 0000 to 1101, the first field is used to indicate the first MCS, and the second field in the DCI is used to indicate the second scheduling information; when the first 3 bits of the first field in DCI indicate 111, the last bit of the first field and the 4 bits of the second field together are 5 bits for indicating the second MCS and the second scheduling information, for example, the 5 bits indicate an index value in an index table as shown in table 15, which corresponds to one value of the second MCS (i.e., one value of modulation order and one TBS index value) and one value of the number of repetitions of the first data. If the index value indicated by the 4 bits is 0, the corresponding modulation order is 4, the tbs index value is 15, and the number of repetitions of the first data is 1, but this is not a limitation in the present application.

TABLE 15

Index value	Modulation order	TBS index value	Number of repetitions of first data
				0	4	15	1
1	4	16	1
				…	…	…	…
32	4	23	2

In another embodiment, at least one bit in the second field and bits other than the N bits in the first field collectively indicate the first scheduling information and the number of repetitions of the DCI.

In another embodiment, at least one bit in the second field and bits other than the N bits in the first field collectively indicate the first scheduling information, the second scheduling information, and the number of repetitions of the DCI.

For example, the first scheduling information is an MCS, and the DCI includes a first field of M bits and a second field of K bits, where the M bits include L bits in addition to the N bits. When the M bits of the first field in the DCI indicate a first status value, the first field is used to indicate a first MCS, and the second field in the DCI is used to indicate second scheduling information and/or a repetition number of the DCI; when the N bits of the first field indicate the first status value, L bits other than the N bits in the first field and K bits in the second field collectively indicate the second MCS, the second scheduling information, and the number of repetitions of the DCI. For example, the L bits and the K bits collectively indicate one index value corresponding to one value of the second MCS (i.e., one value of the modulation order and one TBS index value), one value of the second scheduling information, and one value of the repetition number of DCI, but this is not limited in this application.

In possibility 4, the DCI further includes a third field, at least one bit in the second field and at least one bit in the third field being used to indicate the first scheduling information when N bits in the first field indicate a second status value

In the case of possibility 4, when N bits in the first field indicate the second state value, possibility 4 may include, but is not limited to, the following implementations:

in one embodiment, bits other than N bits in the first field are used to indicate the second scheduling information and/or the number of repetitions of the DCI.

In another embodiment, the third field further includes at least one bit for indicating the second scheduling information and/or the repetition number of the DCI in addition to the at least one bit for indicating the first scheduling information.

In another embodiment, the bits other than N bits in the first field and at least one bit in the second field other than at least one bit for indicating the first scheduling information collectively indicate second scheduling information and/or the number of repetitions of the DCI.

In another embodiment, the bits other than N bits in the first field and at least one bit other than at least one bit used to indicate the first scheduling information in the third field collectively indicate second scheduling information and/or the number of repetitions of the DCI.

In another embodiment, at least one bit in the second field and at least one bit in the third field are used to indicate the first scheduling information and the second scheduling information.

In another embodiment, at least one bit in the second field and at least one bit in the third field are used to indicate the first scheduling information and the number of repetitions of the DCI.

In another embodiment, at least one bit in the second field and at least one bit in the third field are used for the first scheduling information, the second scheduling information, and the number of repetitions of the DCI.

For example, the first scheduling information is MCS, the second scheduling information is the number of repetitions of data, the DCI includes a first field of 4 bits, a second field of 4 bits, and a third field of 2 bits, when the first field indicates a first status value, for example, one of 0000 to 1101, the first field is used to indicate the first MCS, the second field in the DCI is used to indicate the second scheduling information, and the third field is used to indicate the number of repetitions of the DCI; when the first 3 bits of the first field in the DCI indicate 111, or also when the first field in the DCI indicates 1110 or 1111, the 4 bits of the second field and the 2 bits of the third field together are 6 bits for indicating the second MCS, the second scheduling information and the repetition number of the DCI, for example, the 6 bits indicate an index value corresponding to one value of the second MCS (i.e., one value of the modulation order and one TBS index value), one value of the repetition number of the first data and one value of the repetition number of the DCI, but the present application is not limited thereto.

Possibly 5, the DCI further includes a third field, where, when N bits in the first field indicate a second status value, bits in the first field other than the N bits, at least one bit in the second field, and at least one bit in the third field are used to indicate the first scheduling information.

In one embodiment, when N bits in the first field indicate a second status value, bits other than the N bits in the first field, at least one bit in the second field, and at least one bit in the third field are used to indicate the first scheduling information.

In another embodiment, when N bits in the first field indicate a second status value, bits other than the N bits in the first field, at least one bit in the second field, and at least one bit in the third field are used to indicate the first scheduling information and at least one of:

the second scheduling information or the repetition number of the DCI.

Optionally, bits other than the N bits in the first field, at least one bit in the second field, and at least one bit in the third field collectively indicate a fourth state value, the fourth state value corresponding to one value of the first scheduling information and at least one of:

a value of the second scheduling information or a value of the number of repetitions of the first control information.

For example, the first scheduling information is MCS, the second scheduling information is the number of repetitions of data, the DCI includes a first field of 4 bits, a second field of 4 bits, and a third field of 2 bits, when the first field indicates a first status value, for example, one of 0000 to 1101, the first field is used to indicate the first MCS, the second field in the DCI is used to indicate the second scheduling information, and the third field is used to indicate the number of repetitions of the DCI; when the first 3 bits of the first field in DCI indicate 111, the last 1 bits in the first field, the 4 bits of the second field, and the 2 bits of the third field together are used to indicate the second MCS, the second scheduling information, and the repetition number of the DCI, for example, the 7 bits indicate an index value corresponding to one value of the second MCS (i.e., one value of the modulation order and one TBS index value), one value of the repetition number of the first data, and one value of the repetition number of the DCI, but the present application is not limited thereto.

Fig. 10 is a schematic flowchart of an example of a communication method provided in an embodiment of the present application.

In the communication method described in fig. 10, the communication device (e.g., the first device or the second device) schedules communication data using the control information in the fifth mode described above.

S1010, the first device determines first control information for scheduling the first data.

The first device determines to send the first data to the second device, or the first device determines to receive the first data from the second device, determines the scheduling information of the first data such as the first scheduling information and the second scheduling information adopted by the first data, and may also determine the repetition number of sending the first control information. And generating the first control information in the fifth mode.

For example, the first device may be a network device and the second device may be a terminal device, and the network device may determine to send first data to the terminal device and determine to schedule the first control information of the first data. Or the network device may also determine to schedule the terminal device to send the first data, determine the scheduling information of the terminal device to send the first data, generate the first control information, and send the first control information to the terminal device. For another example, the first device and the second device may be different terminal devices, and the first device determines to the second device and determines the first control information to schedule the first data, but the application is not limited thereto.

For example, the first device may determine a modulation scheme, a coding scheme, etc. of the first data according to a channel condition between the current first device and the second device. When the first device determines that the TBS of the first data and adopts the modulation scheme of QPSK, and determines that the MCS of the first data is the first MCS, a first field in the first control information of the first data is scheduled to indicate a first state value corresponding to the first MCS, for example, the first field indicates an index value corresponding to the TBS of the first data and a table 5 index value corresponding to the modulation scheme of QPSK, that is, one value of 0000 to 1101. And the first device may further determine that a second field in the first control information is used to indicate second scheduling information and/or a number of repetitions of the first control information, and generate the first control information. Or when the first device determines that the TBS of the first data and adopts the modulation mode of 16QAM, and determines that the MCS of the first data is the second MCS, then N bits of a first field in the first control information of the first data are scheduled to be used for indicating the second status value, at least one bit of a bit other than the N bits in the first field and/or the second field is used for indicating the second MCS (when N bits in the first field indicate the second status value according to implementation, the bit other than the N bits in the first field is indicated to be used for indicating the second MCS, or L bits in the second field are indicated to be used for indicating the second MCS, or, further alternatively, the bit other than the N bits in the first field and the L bits in the second field are indicated to be used for indicating the second MCS). For example, the first 3 bits in the first field indicate 111, where the first 3 bits indicate 111 that the second field in the DCI is used to indicate the second MCS, and the first device determines the corresponding index value as in table 7 according to the TBS of the first data and the modulation scheme of 16QAM, and the first device determines that the second field indicates the index value and generates the first control information, but the application is not limited thereto.

In fig. 10, the first scheduling information is taken as an example of MCS, and the first scheduling information may be other scheduling information of data, but the present application is not limited thereto.

Optionally, the second device may further send capability information to the first device, where the capability information is used to indicate whether the second device supports a modulation mode corresponding to the second MCS, and when the first device determines, according to the capability information, that the second device supports the modulation mode corresponding to the second MCS, it considers whether to modulate the data with the modulation mode corresponding to the second MCS when sending the data to the second device. For example, the capability information is used to indicate that the second device supports a modulation scheme of 16 QAM. After receiving the capability information, if it is determined that the data adopts a modulation mode of 16QAM, the first device indicates the second status value by using N bits in a first field in the corresponding first control information, where at least one bit in the first field other than the N bits and the second field is used to indicate an index value of a second MCS corresponding to 16 QAM.

S1020, the first device sends the first control information and/or the first data to the second device.

The first device generates the first control information after determining the scheduling information of the first data, and transmits the first control information. When the data scheduled by the first control information is downlink data or data sent by the first device to the second device, the first device also sends the first data according to the first control information. For example, the first data is modulated and encoded by a corresponding modulation and encoding method, and the first data is repeatedly transmitted according to the repetition number of the first data.

S1030, the second device determines the first control information.

The second device receives the first control information and determines a first field in the first control information, determines that the first field is used to indicate a first MCS when the first field indicates a first status value, determines that at least one bit in the first field other than the N bits is used to indicate a second MCS when the N bits in the first field indicate a second status value, and/or determines that the bit in the first field other than the N bits and the L bits in the second field collectively indicate the second MCS when the N bits in the first field indicate a second status value, depending on the implementation.

For example, the second device reads a first field in the first control information, where the first 4 bits in the first field indicate 1110, and then the second device determines that a second field in the first control information is used to indicate a second MCS, and reads the second field to determine, according to an index value indicated by the second field, a second MCS corresponding to the index value, that is, a modulation scheme and a TBS index corresponding to the index value. When the first data is downlink data or data sent by the first device to the second device, the second device demodulates the received first data according to the modulation mode in S1040, determines a TBS of the first data according to the TBS index, and the like. When the first control information is control information for scheduling the second device to send data to the first device, the second device modulates and codes the first control information according to the modulation and coding mode in S940, and then generates the first data, and sends the first data to the first device.

S1040, the second device receives or transmits the first data according to the first control information.

And when the first data is downlink data or data sent by the first equipment to the second equipment, the second equipment receives the first data according to the first control information. When the first control information is control information for scheduling the second device to send data to the first device, the second device generates first data according to the first control information and sends the first data to the first device.

Mode six

The DCI for scheduling the first data (i.e., an example of the first control information) includes a first field including M bits and a second field including K bits, as shown in fig. 2. Wherein M, K is an integer of 1 or more. The first field is used for indicating a modulation coding mode of the first data, and the second field is used for indicating second scheduling information of the first data;

when the second field indicates a first status value, the first field is used for indicating the first modulation coding mode, wherein the first status value corresponds to a value of the second scheduling information;

when the second field indicates a second status value, the first field is used for indicating the second modulation coding mode, wherein the second status value corresponds to a value of the second scheduling information, the modulation order corresponding to the first modulation coding mode is 1 or 2, and the modulation order corresponding to the second modulation coding mode is 4 or 6.

Optionally, the first state value is one state value in a first set, the second state value is one state value in a second set, and the first set and the second set have no intersection.

For example, the DCI may be uplink scheduling DCI, and the second field may be a subcarrier indication field, that is, the second scheduling information may be subcarrier indication information for indicating a subcarrier used for carrying uplink data, which may also be referred to as a subcarrier scheduling indication field. In the prior art, the number of different corresponding subcarriers of the subcarrier interval is different, for example, the uplink bandwidth of 180kHz, 48 subcarriers are shared when the subcarrier interval is 3.75kHz, and 12 subcarriers are shared when the subcarrier interval is 15 kHz. The subcarrier indication field comprises 6 bits, and when the subcarrier spacing is configured to be 3.75kHz, the value indicated by the subcarrier indication field is the number of the scheduled subcarrier, thus comprising 48 states (i.e. 0 to 47), and when the subcarrier spacing is configured to be 15kHz, the subcarrier indication field indicates an index value I in table 16 _sc Indicating that the sub-carriers corresponding to the index value are scheduled, as shown in table 16, includes 19 states in total, i.e., index values of 0 to 11 indicate 1 sub-carrier having the same number as the index value of the scheduled sub-carrier, index values of 12 to 15 indicate 3 sub-carriers are scheduled, The sequence numbers of the 3 subcarriers can be obtained by the calculation formulas corresponding to the index values 12 to 15 in table 16. Index values 16, 17 represent scheduling 6 subcarriers, and index value 18 represents scheduling 12 subcarriers. Thus, the 6 bits of the subcarrier indication field indicate a maximum of 48 states, of which 16 states (i.e., 48 to 63) are reserved for non-use.

Table 16

Subcarrier indication field (I) _sc )	The allocated subcarriers (n _sc )
		0–11	I _SC
12-15	3(I _sc -12)+{0,1,2}
		16-17	6(I _sc -16)+{0,1,2,3,4,5}
18	{0,1,2,3,4,5,6,7,8,9,10,11}
		19-63	Reservation of

The present application proposes that when the subcarrier indication field indicates 0 to 47, the scheduled subcarriers are determined according to the manner of the prior art, and when the subcarrier indication field indicates 0 to 47, the first field in the DCI indicates the first MCS; when the subcarrier indication fields indicate 48 to 63, it is indicated that the subcarrier indication fields indicate an index value as in table 17, in which subcarriers corresponding to the index value are scheduled, and when the subcarrier indication fields indicate 48 to 63, it is indicated that the first field in the DCI indicates the second MCS. Wherein table 16 and table 17 may be the same table, such as one in which index values are from 0 to 54, and subcarriers allocated in table 17 are only one example of the present application, the present application is not limited thereto.

TABLE 17

Subcarrier indication field (I) _sc )	The allocated subcarriers (n _sc )
		48-51	3(I _sc -48)+{0,1,2}
52-53	6(I _sc -52)+{0,1,2,3,4,5}
		54	{0,1,2,3,4,5,6,7,8,9,10,11}
55-63	Reserved

For example, when the first data is modulated and encoded with the first MCS (e.g., QPSK, TBS index value is 2) and 6 subcarriers are scheduled to carry the first data, 6 bits of the subcarrier indication field in the DCI for scheduling the first data indicate index values (16 or 17) corresponding to the scheduled 6 subcarriers in 0 to 47, indicating that the first data adopts the first MCS and the MCS field in the DCI indicates an MCS with MCS index value of 2 in table 5. When the first data adopts the second MCS (e.g., 16qam, tbs index value is 11) and the 6 subcarriers are scheduled to carry the first data, the 6 bits of the subcarrier indication field in the DCI for scheduling the first data indicate the index value (52 or 53) corresponding to the scheduled 6 subcarriers in 48 to 54, which indicates that the first data adopts the second MCS and the MCS field in the DCI indicates the MCS with MCS index value of 1 in table 7, but the present application is not limited thereto.

The communication method shown in fig. 10 may also schedule communication data using the control information in the sixth aspect described above

As in S1010, the first device determines an MCS of the first data, determines one index value of subcarrier indication field indications 0 to 47 in first control information for scheduling the first data in case the first data adopts the first MCS, and determines one index value of subcarrier indication field indications 48 to 54 in the first control information in case the first data adopts the second MCS, and generates the first control information. In S1020, the first device sends the first control information to the second device, and when the first data is data sent by the first device to the second device, the first device generates the first data according to the first control information and sends the first data to the second device. The second device determines the first control information, specifically, whether the MCS field indicates the first MCS or the second MCS according to the index value range indicated by the subcarrier indication field to correctly read the MCS in S1030. When the first data is data transmitted from the first device to the second device, the second device receives the first data according to the first control information in S1040; when the first control information is used to schedule the second device to transmit the first data to the first device, the second device performs modulation coding or the like according to the first control information, generates the first data and transmits the first data to the first device, but the present application is not limited thereto.

According to the above scheme, mode six does not add 1 bit to the DCI, and the lower the number of bits in the DCI, the lower the code rate, so that the DCI is easier to decode correctly, compared to modes one and two. Mode three uses a 4-bit MCS field indicating only 16 of the index values of the 32 modulation coding schemes in table 8, and the MCS field is highly likely to be unable to indicate a part of the 14 modulation coding schemes corresponding to QPSK in table 5, that is, mode three cannot support a part of the modulation coding schemes in table 5, as compared with the prior art. In contrast to the third mode, the sixth mode may support not only all modulation and coding modes in table 5, but also a combination of 16 higher order modulation modes and TBS index values when the second field indicates the second status value, and the number of bits is not newly increased in the DCI. Mode four reallocates 4 bits of the MCS field in the DCI with N bits (e.g., 4-bit repetition number field) of another field, so that the reallocated MCS field is 5 bits and the other field is N-1 bits, so mode four cannot indicate some configurations of the other field. Compared with the fourth mode, the sixth mode can support not only that the other field in the DCI is N bits, but also that when the second field indicates the second status value, the combination of 16 higher order modulation modes and TBS index values is supported, and the number of bits is not newly increased in the DCI. In summary, the scheme of the sixth mode can support scheduling of high-order modulation on the basis of the prior art, without increasing the bit number of DCI, and can support all possible configurations of MCS, data repetition number, and the like in the prior art.

Mode seven

A first DCI format is specified that can indicate that data adopts a modulation order of 16QAM, 64QAM, or the like. Alternatively, the DCI of the first DCI format may be scrambled by a first scrambling sequence.

Optionally, a first field may be included in the first DCI format, where the first field may be used to indicate at least two of the following scheduling information:

modulation coding mode, data repetition number, DCI repetition number or subcarrier scheduling indication information;

the first field may indicate an index value corresponding to a value of at least two of a modulation coding scheme, a number of repetitions of data, a number of repetitions of DCI, or subcarrier scheduling indication information.

For example, the first field is used to indicate the MCS and the number of repetitions of the data, and the first field may indicate an index value corresponding to a value of the MCS and a value of the number of repetitions. For example, the first field indicates an index value as in table 18, where each index value corresponds to an index value of one MCS from which modulation order and TBS index values can be determined, and each index value in table 18 also corresponds to a value of the number of repetitions of one data. Therefore, according to the index value indicated by the first field, not only the modulation order and TBS, but also the repetition number of the data can be determined.

TABLE 18

In the downlink scheme of the prior art, as shown in table 4, the MCS field occupies 4 bits, the repetition number field of data occupies 4 bits, and 8 bits are required to indicate the MCS field and the repetition number field of data in total in the control information. In the seventh aspect, for example, the first field is used to indicate the MCS and the number of repetitions of the data, and the number of bits occupied by the first field is less than 8 bits, because when a value of the MCS field corresponding to the index value indicated by the first field is greater than X, for example, x=15, the number of repetitions of the data may take a value of 1 or 2, and at this time, the first field does not need to jointly indicate the MCS greater than 15 and the number of repetitions of the data greater than 2. Thus, the first field jointly indicates that the number of bits occupied by the MCS and the number of repetitions of data is less than 8 bits in the prior art. In summary, when the scheme of the seventh aspect of the present invention indicates at least two of the modulation coding scheme, the number of repetitions of data, the number of repetitions of DCI, or the subcarrier scheduling indication information, the scheme can occupy a smaller number of bits than the indication scheme in the prior art, thereby reducing the bit number overhead of DCI.

On the other hand, there are 3 deployment modes for existing NB-IoT, including in-band deployment (in-band operation), guard-band deployment (guard-band operation), and stand-alone deployment (stand-alone operation). The in-band operation mode is divided into in-band same-PCI and in-band deployment of in-band differential-PCI with the same physical cell identifier (physical cell identities, PCI).

In the case of in-band same-PCI, the terminal device of NB-IoT system may consider that the NB-IoT system and LTE system have the same PCI, LTE cell reference signals (cell reference signal, CRS) have the same number of antenna ports as NRS, and LTE CRS is always available in all NB-IoT downlink subframes where NRS transmission is present. In the case of in-band differential-PCI, since the PCI of the NB-IoT system and the PCI of the LTE system are different, the terminal device of the NB-IoT system may determine the transmission position of the LTE CRS in the NB-IoT downlink subframe, although the terminal device cannot obtain the LTE CRS in the NB-IoT downlink subframe. That is, in the case of in-band operation, the terminal device of the NB-IoT system may be at the transmission location of LTE CRS within the NB-IoT downlink subframe.

NB-IoT R17 contemplates introducing high order modulation, such as 16quadrature amplitude modulation (16quadrature amplitude modulation,16QAM), to boost data transmission rates to support higher speed internet of things traffic. At this time, in the case of data adopting a high-order modulation scheme, power control is required for downlink data to improve the robustness of transmission. The application also provides a power control method of the downlink data.

Fig. 11 is a schematic flowchart of a power control method for downlink data provided in the present application.

S1110, the network device determines a first power ratio and a second power ratio.

The first power ratio is a ratio of a power of a first reference signal in an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol containing the first reference signal to a power of a first data signal. The second power ratio is a ratio of a power of a second reference signal to a power of a second data signal in an OFDM symbol including the second reference signal. Wherein the OFDM symbol containing the first reference signal and the OFDM symbol containing the second reference signal are different OFDM symbols in the same subframe.

S1120, the network device sends the first power ratio and the second power ratio to the terminal device.

Accordingly, the terminal device receives the first power ratio and the second power ratio from the network device.

In the present application, from the perspective of the network device, the existence condition of the first power ratio and the second power ratio is In-band operation.

Optionally, in this embodiment of the present application, the first power ratio and the second power ratio may be carried by the same message, or may be carried by different messages, and a carrying manner and a carrying position of the first power ratio and the second power ratio in this embodiment of the present application are not specifically limited.

As an example and not by way of limitation, the first power ratio and/or the second power ratio may be carried in SIB messages or RRC messages, in particular, the RRC messages may be radio resource control messages, which embodiments of the present application are not particularly limited.

In particular, the power ratio may be a ratio of energy per resource element (energy per resource element, EPRE), that is to say the first power ratio is used to determine a ratio of EPRE of a first reference signal to EPRE of a first data signal in an OFDM symbol containing a first reference signal, and the second power ratio is used to determine a ratio of EPRE of a second reference signal to EPRE of a second data signal in an OFDM symbol containing a second reference signal.

Optionally, the first reference signal is a narrowband reference signal, and the second reference signal is an LTE cell reference signal.

As an example and not by way of limitation, the terminal device is a terminal device supporting a 16QAM modulation scheme or a 64QAM modulation scheme. Of course, the embodiment of the present application may also be implemented in a case where the terminal device does not support 16QAM, which is not limited specifically. Alternatively, the values of the first power ratio and the second power ratio may be the same or different, which is not specifically limited in the embodiments of the present application. If the values of the first power ratio and the second power ratio are the same, the network device may send both the first power ratio and the second power ratio, or the network device may send only the first power ratio or the second power ratio, which is not specifically limited in the embodiments of the present application.

Optionally, for a third data signal in an OFDM symbol that does not include either the first reference signal or the second reference signal in the subframe, the value of the power of the third data signal may be the same as the value of the first data signal in the OFDM symbol that includes the first reference signal, or the value of the power of the third data signal may be the same as the value of the second data signal in the OFDM symbol that includes the second reference signal, or the value of the power of the third data signal may be different from the values of the first data signal and the second data signal.

According to the scheme, the network equipment informs the terminal equipment of the first power ratio and the second power ratio, so that the power control of downlink data can be realized, and the network equipment and the terminal equipment can achieve consensus so as to improve the transmission robustness.

It should be understood that, in the foregoing embodiments, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not constitute any limitation on the implementation process of the embodiments of the present application. Note that the above embodiments provided in the present application may be implemented alone or in combination with each other, for example, the embodiment shown in fig. 11 is implemented in combination with the DCI indication mode five described above, and the present application is not limited thereto.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 2 to 11. The following describes in detail the apparatus provided in the embodiments of the present application with reference to fig. 12 to 14.

Fig. 12 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 12, the communication apparatus 1500 may include a processing unit 1510 and a transceiving unit 1520.

In one possible design, the communication apparatus 1500 may correspond to the terminal device in the above method embodiment, for example, may be a terminal device, or a chip configured in the terminal device.

It is to be understood that the communication apparatus 1500 may correspond to terminal devices in the methods 1000, 1100 according to embodiments of the present application, and that the communication apparatus 1500 may comprise means for performing the methods performed by the terminal devices in the methods 1000, 1100 of fig. 10, 11. The respective units in the communication device 1500 and the other operations and/or functions described above are also used to implement the respective flows of the methods 1000 and 1100 in fig. 10 and 11, respectively.

It should also be appreciated that when the communication apparatus 1500 is a terminal device, the transceiver unit 1520 in the communication apparatus 1500 may correspond to the transceiver 2020 in the terminal device 2000 illustrated in fig. 13, and the processing unit 1510 in the communication apparatus 1500 may correspond to the processor 2010 in the terminal device 2000 illustrated in fig. 13.

It should be further understood that when the communication apparatus 1500 is a terminal device, the transceiver unit 1520 in the communication apparatus 1500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 2020 in the terminal device 2000 shown in fig. 13, the processing unit 1510 in the communication apparatus 1500 may be implemented through at least one processor, for example, may correspond to the processor 2010 in the terminal device 2000 shown in fig. 13, and the processing unit 1510 in the communication apparatus 1500 may also be implemented through at least one logic circuit.

Optionally, the communication device 1500 may further comprise a processing unit 1510, which processing unit 1510 may be used for processing instructions or data to achieve corresponding operations.

Optionally, the communication device 1500 may further include a storage unit, where the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement the corresponding operation.

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

In another possible design, the communication apparatus 1500 may correspond to the network device in the above method embodiment, for example, may be a network device, or a chip configured in a network device.

It is to be understood that the communication apparatus 1500 may correspond to a network device in the methods 1000, 1100 according to embodiments of the present application, and that the communication apparatus 1500 may comprise means for performing the method performed by the network device in the methods 1000, 1100 of fig. 10, 11. The respective units in the communication device 1500 and the other operations and/or functions described above are also used to implement the respective flows of the methods 1000 and 1100 in fig. 10 and 11, respectively.

It should also be appreciated that when the communication apparatus 1500 is a network device, the transceiver unit in the communication apparatus 1500 may correspond to the transceiver 3100 in the network device 3000 shown in fig. 14, and the processing unit 1510 in the communication apparatus 1500 may correspond to the processor 3202 in the network device 3000 shown in fig. 14.

It should also be appreciated that when the communication apparatus 1500 is a network device, the transceiver unit 1520 in the communication apparatus 1500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 3100 in the network device 3000 shown in fig. 14, the processing unit 1510 in the communication apparatus 1500 may be implemented through at least one processor, for example, may correspond to the processor 3202 in the network device 3000 shown in fig. 14, and the processing unit 1510 in the communication apparatus 1500 may be implemented through at least one logic circuit.

Fig. 13 is a schematic structural diagram of a terminal device 2000 provided in an embodiment of the present application. The terminal device 2000 may be applied to a system as shown in fig. 1, and perform the functions of the terminal device in the above-described method embodiment. As shown, the terminal device 2000 includes a processor 2010 and a transceiver 2020. Optionally, the terminal device 2000 further comprises a memory 2030. Wherein the processor 2010, the transceiver 2020 and the memory 2030 may communicate with each other via an internal connection path, transferring control and/or data signals, the memory 2030 is used for storing a computer program, and the processor 2010 is used for calling and running the computer program from the memory 2030 to control the transceiver 2020 to transceive signals. Optionally, the terminal device 2000 may further include an antenna 2040 for transmitting uplink data and uplink control signaling output by the transceiver 2020 through a wireless signal.

The processor 2010 and the memory 2030 may be combined into a single processing device, and the processor 2010 is configured to execute program codes stored in the memory 2030 to implement the functions described above. In particular implementations, the memory 2030 may also be integrated within the processor 2010 or separate from the processor 2010. The processor 2010 may correspond to the processing unit of fig. 12.

The transceiver 2020 may correspond to the transceiver unit in fig. 12. The transceiver 2020 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It should be understood that the terminal device 2000 shown in fig. 13 is capable of implementing the respective processes related to the terminal device in the method embodiments shown in fig. 10 and 11. The operations and/or functions of the respective modules in the terminal device 2000 are respectively for implementing the corresponding flows in the above-described method embodiment. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The above-described processor 2010 may be used to perform the actions described in the previous method embodiments as being performed internally by the terminal device, while the transceiver 2020 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Optionally, the terminal device 2000 may also include a power supply 2050 for providing power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more complete, the terminal device 2000 may further include one or more of an input unit 2060, a display unit 2070, an audio circuit 2080, a camera 2090, a sensor 2100, and the like, and the audio circuit may further include a speaker 2082, a microphone 2084, and the like.

Fig. 14 is a schematic structural diagram of a network device provided in an embodiment of the present application, for example, may be a schematic structural diagram of a network device.

It should be understood that the network device 3000 shown in fig. 14 is capable of implementing various processes related to the network device in the method embodiments shown in fig. 10 and 11. The operations and/or functions of the respective modules in the network device 3000 are respectively for implementing the corresponding flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

It should be understood that the network device 3000 shown in fig. 14 is only one possible architecture of a network device, and should not constitute any limitation to the present application. The method provided by the application can be applied to network devices of other architectures. For example, network devices including CUs, DUs, and AAUs, etc. The specific architecture of the network device is not limited in this application.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of any of the method embodiments described above.

It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the application, the application further provides a computer program product, which comprises: computer program code for causing a computer to perform the method of the embodiments shown in fig. 10, 11 when the computer program code is run on the computer.

According to the method provided in the embodiments of the present application, there is further provided a computer readable medium storing a program code, which when run on a computer, causes the computer to perform the method in the embodiments shown in fig. 10 and 11.

According to the method provided by the embodiment of the application, the application further provides a system, which comprises the one or more terminal devices and the one or more network devices.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor may be one or more.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above-described embodiments, the functions of the respective functional units may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

determining first control information, the first control information being used for scheduling first data, the first control information comprising a first field and a second field, the first field comprising M bits,

when the first field indicates a first status value, the first field is used for indicating first scheduling information of the first data;

when N bits in the first field indicate a second status value, at least one bit in the second field is used to indicate the first scheduling information, or at least one bit in the second field and bits in the first field other than the N bits are used to indicate the first scheduling information, wherein N, M is a positive integer, and N is less than or equal to M;

and receiving or transmitting the first data according to the first control information.

2. The method of claim 1, wherein the first scheduling information is a modulation coding scheme of the first data, wherein,

when the first field indicates the first state value, the first scheduling information is a first modulation coding mode;

and when the N bits in the first field indicate the second state value, the first scheduling information is in a second modulation coding mode.

3. The method according to claim 1 or 2, wherein when the first field indicates the first status value, the second field is used to indicate a number of repetitions of second scheduling information and/or the first control information of the first data.

4. The method of claim 1 or 2, wherein when the N bits in the first field indicate the second status value,

at least one bit in the second field, or at least one bit in the second field and a bit in the first field other than the N bits are specifically used to indicate the first scheduling information and at least one of:

the second scheduling information of the first data or the repetition number of the first control information.

5. The method of claim 4, wherein at least one bit in the second field indicates a third status value, or wherein bits in the first field other than the N bits and at least one bit in the second field collectively indicate a third status value, the third status value corresponding to one value of the first scheduling information and at least one of:

6. Method according to claim 1 or 2, characterized in that when N bits in the first field indicate the second status value, at least one bit in the second field is used for indicating the first scheduling information, and bits in the first field other than the N bits are used for indicating the second scheduling information of the first data and/or the repetition number of the first control information.

7. The method according to claim 1 or 2, wherein when N bits in the first field indicate the second status value, the second field further comprises at least one bit for indicating a number of repetitions of second scheduling information and/or the first control information of the first data.

8. The method according to claim 1 or 2, wherein the first control information further comprises a third field, wherein when the first field indicates the first status value,

the second field is used to indicate second scheduling information of the first data, the third field is used to indicate the number of repetitions of the first control information, or,

The second field is used for indicating the repetition number of the first control information, and the third field is used for indicating second scheduling information of the first data.

9. The method according to claim 8, wherein the third field is used for indicating the number of repetitions of the second scheduling information and/or the first control information when N bits in the first field indicate the second status value.

10. The method according to claim 8, wherein when N bits in the first field indicate the second status value, bits other than the N bits in the first field, at least one bit in the second field and at least one bit in the third field are specifically used to indicate the first scheduling information and at least one of:

11. The method of claim 10, wherein bits other than the N bits in the first field, at least one bit in the second field, and at least one bit in the third field collectively indicate a fourth state value, the fourth state value corresponding to one value of the first scheduling information and at least one of:

12. Method according to claim 1 or 2, characterized in that N bits in the first field are used to indicate the second status value, which corresponds to one value of second scheduling information of the first data and/or one value of the number of repetitions of first control information, and to indicate at least one bit in the second field is used to indicate the first scheduling information, and at least one bit in the second field is used to indicate the first scheduling information.

13. The method of claim 3, wherein the second scheduling information is a number of repetitions of the first data.

14. A method according to claim 1 or 2, characterized in that,

the second state value is "1110" or "1111", where N is equal to M, or,

the second state value is "111", where N is less than M.

15. A wireless communications apparatus, comprising:

a processing unit for determining first control information for scheduling first data, the first control information comprising a first field and a second field, the first field comprising M bits,

the processing unit is further configured to control the transceiver unit to receive or transmit the first data according to the first control information.

16. The apparatus of claim 15, wherein the first scheduling information is a modulation coding scheme of the first data, wherein,

17. The apparatus according to claim 15 or 16, wherein when the first field indicates the first status value, the second field is used to indicate a number of repetitions of second scheduling information and/or the first control information of the first data.

18. The apparatus of claim 15 or 16, wherein when the N bits in the first field indicate the second status value,

19. The apparatus of claim 18, wherein at least one bit in the second field indicates a third status value or bits in the first field other than the N bits and at least one bit in the second field collectively indicate a third status value, the third status value corresponding to one value of the first scheduling information and at least one of:

20. The apparatus according to claim 15 or 16, wherein when N bits in the first field indicate the second status value, at least one bit in the second field is used to indicate the first scheduling information, and bits other than the N bits in the first field are used to indicate a number of repetitions of second scheduling information and/or the first control information of the first data.

21. The apparatus according to claim 15 or 16, wherein when N bits in the first field indicate the second status value, the second field further comprises at least one bit for indicating a number of repetitions of second scheduling information and/or the first control information of the first data.

22. The apparatus of claim 15 or 16, wherein the first control information further comprises a third field, wherein when the first field indicates the first status value,

23. The apparatus of claim 22, wherein the third field is configured to indicate a number of repetitions of the second scheduling information and/or the first control information when N bits in the first field indicate the second status value.

24. The apparatus of claim 22, wherein when N bits in the first field indicate the second status value, bits in the first field other than the N bits, at least one bit in the second field, and at least one bit in the third field are specifically used to indicate the first scheduling information and at least one of:

25. The apparatus of claim 24, wherein bits other than the N bits in the first field, at least one bit in the second field, and at least one bit in the third field collectively indicate a fourth state value, the fourth state value corresponding to one value of the first scheduling information and at least one of:

26. The apparatus according to claim 15 or 16, wherein when N bits in the first field are used to indicate the second status value, the second status value corresponds to one value of second scheduling information of the first data and/or one value of a repetition number of first control information, and indicates that at least one bit in the second field is used to indicate the first scheduling information, and at least one bit in the second field is used to indicate the first scheduling information.

27. The apparatus of claim 17, wherein the second scheduling information is a number of repetitions of the first data.

28. The apparatus according to claim 15 or 16, wherein,

the second state value is "1110" or "1111", where N is equal to M, or,

the second state value is "111", where N is less than M.

29. A computer readable storage medium comprising computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 14.

30. A chip comprising at least one processor and a communication interface;

the communication interface is for receiving signals input to or output from the chip, and the processor is in communication with the communication interface and is configured to implement the method of any one of claims 1 to 14 by logic circuitry or execution of code instructions.