Instruction information transmission method, instruction information reception method, device, and system

Abstract

To provide an indication information transmitting method, an indication information receiving method, a device, and a system that relate to the field of wireless communications technologies.SOLUTION: The method includes the steps of: generating, by a base station, first indication information, and transmitting the first indication information to a terminal device; and receiving, by the terminal device, the first indication information, and determining a power control manner of a first channel based on the first indication information, where the first indication information is used to indicate the power control manner of the first channel, the power control manner of the first channel is one power control manner in a power control manner set, and the power control manner set includes at least one power control manner. Because a network device can indicate the power control manner of the first channel to the terminal device by using the first indication information, compared with the prior art, the terminal device determines a transmit power of a signal in a more flexible manner, so that the terminal device can better adapt to a current network.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This application was filed with the China National Intellectual Property Administration on May 17, 2017, and claims priority to Chinese Patent Application No. 201710349785.7, entitled "INDICATION INFORMATION SENDING METHOD, INDICATION INFORMATION RECEIVING METHOD, DEVICE, AND SYSTEM", the entire content of which is incorporated herein by reference.

[0002] This application relates to the field of wireless communication technologies, and more particularly, to an indication information sending method, an indication information receiving method, a device, and a system.

Background Art

[0003] Currently, in a narrow-band Internet of Things (NB-IoT) system, open-loop power control is used in the uplink. Specifically, in the case of a signal on the narrowband physical random access channel (NPRACH) in the NB-IoT system, when the coverage level of the signal is 0, the terminal device enables open-loop power control and determines the transmission power of the signal on the NPRACH based on several power control parameters such as the preamble initial power and the downlink path loss. When the signal cannot be transmitted on the NPRACH based on the determined transmission power, the terminal device performs power ramping and re-transmits the signal. When the coverage level of the signal is 1 or 2, the signal is directly transmitted on the NPRACH based on the maximum transmission power of the terminal device, and the maximum transmission power is configured by the base station. In the case of a signal on the narrowband physical uplink shared channel (NPUSCH) in the NB-IoT system, when the number of signal transmission repetitions is 2 or less, the terminal device enables open-loop power control and determines the transmission power of the signal on the NPUSCH based on several power control parameters such as the downlink path loss and the target reception power. When the number of signal transmission repetitions is greater than 2, the terminal device directly transmits the signal on the NPUSCH based on the maximum transmission power of the terminal device.

[0004] In the prior art, the signal transmission power determination method of the terminal device is fixed. In the signal transmission power determination method, when the load of the communication network is relatively light, or when the number of terminal devices in the communication situation in the communication network is relatively small, the retransmission time of the terminal device can be shortened, and at the same time, the quality of the transmitted signal is guaranteed. However, in the prior art, in the signal transmission power determination method of the terminal device, in most cases, the terminal device directly transmits the signal using the maximum transmission power. Therefore, in a communication network with interference limitations or a communication network with a relatively heavy load, the interference between the signals of the terminal devices is likely to deteriorate easily.

[0005] Therefore, in the prior art, there are relatively large limitations in the method for determining the transmission power according to the pre-configured signal transmission power determination method.

Summary of the Invention

Means for Solving the Problems

[0006] Embodiments of the present application provide an indication information transmission method, an indication information reception method, a device, and a system so that a terminal device can flexibly determine the transmission power of a signal.

[0007] According to a first aspect, an embodiment of the present application provides an indication information transmission method, and the indication information transmission method includes: generating, by a network device, first indication information and transmitting the first indication information to a terminal device, where the first indication information is used to indicate the power control method of a first channel, the power control method of the first channel is one of the power control methods in a set of power control methods, and the set of power control methods includes the following power control methods, that is, the transmission power of the signal on the first channel is determined by the terminal device based on a first parameter The transmission power of a signal that meets the first transmission format and is on the first channel is determined by the terminal device based on a second parameter, the transmission power of a signal that does not meet the first transmission format and is on the first channel is determined by the terminal device, and the transmission power of a signal that does not meet the first transmission format and is on the first channel is the maximum transmission power of the terminal device, and the transmission power of a signal on the first channel is determined by the terminal device according to a rule predefined in the terminal device includes at least one of.

[0008] The network device can send the first indication information used to indicate the power control method of the first channel to the terminal device compared with the conventional pre-configured method in which the terminal device determines the transmission power of the signal. Therefore, the terminal device can determine the transmission power of the signal in a more flexible manner, reducing the interference between the signals transmitted by the terminal device and improving the system capacity at the same time.

[0009] Based on the first aspect, in a possible design, the network device is for the first channel and receives the signal transmitted by the terminal device based on the power control method indicated by the first indication information.

[0010] Since the terminal device transmits the signal based on the power control method indicated by the first indication information, the possibility that the network device receives the signal transmitted by the terminal device is increased.

[0011] For example, the network device may generate first indication information by referring to network characteristics such as the network load situation so that it can select a more appropriate power control method for the terminal device. Therefore, when transmitting a signal based on the power control method indicated by the first indication information, the terminal device can better adapt to the current network environment, and thus the possibility that the network device receives the signal transmitted by the terminal device is increased.

[0012] Based on the first aspect, in a possible design, the first channel is a physical uplink shared channel, or the first channel is a physical uplink control channel, or the first channel is a physical random access channel, or the first channel is a different uplink transmission channel other than the physical uplink shared channel, the physical uplink control channel, and the physical random access channel.

[0013] Based on the first aspect, in a possible design, the first parameter is at least one of Reference Signal Receiving Power (RSRP), path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, number of preamble attempts, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter is included.

[0014] It should be understood that the transmission bandwidth is the transmission bandwidth of the signal on the first channel, and the target reception power is the target reception power of the signal on the first channel.

[0015] Based on the first aspect, in a possible design, the second parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, preamble trial count, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of them.

[0016] Note that the first parameter and the second parameter may be the same or different. For example, the first parameter is RSRP, path loss, and maximum transmission power of the terminal device, and the second parameter is transmission bandwidth, maximum transmission power of the terminal device, and target reception power. Alternatively, both the first parameter and the second parameter are transmission bandwidth and maximum transmission power of the terminal device.

[0017] Based on the first aspect, in a possible design, a signal that satisfies the first transmission format and is on the first channel can be specifically implemented as follows. The number of repeated transmissions satisfies the first condition, and the signal is on the first channel, The modulation and coding scheme (MCS) level satisfies the second condition, and the signal is on the first channel, The transport block size satisfies the third condition, and the signal is on the first channel, or The coverage level satisfies the fourth condition, and the signal is on the first channel.

[0018] The first condition, the second condition, the third condition, and the fourth condition may be preconfigured on the network device or configured by the network device.

[0019] When the first condition, the second condition, the third condition, and the fourth condition are configured by the network device, when the terminal device transmits a signal based on the power control method indicated by the first instruction information, it can better adapt to the current network environment and the like.

[0020] Based on the first aspect, in a possible design, the first instruction information is carried by a system message, or the first instruction information is carried by other upper layer signaling other than the system message.

[0021] According to the second aspect, an instruction information receiving method is provided, and the instruction information receiving method includes the steps of receiving, by the terminal device, the first instruction information transmitted by the network device, and determining the power control method of the first channel based on the first instruction information. The first instruction information is used to indicate the power control method of the first channel, the power control method of the first channel is one of the power control methods in the power control method set, and the power control method set includes the following power control methods, that is, the transmission power of the signal on the first channel is determined by the terminal device based on the first parameter, the transmission power of the signal on the first channel that meets the first transmission format is determined by the terminal device based on the second parameter, the transmission power of the signal on the first channel that does not meet the first transmission format is determined by the terminal device, the transmission power of the signal on the first channel that does not meet the first transmission format is the maximum transmission power of the terminal device, and the transmission power of the signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device including at least one of them.

[0022] Compared with the prior art, the terminal device can determine the power control method of the first channel based on the power control method indicated by the first indication information, so the power control method determined by the terminal device is more flexible. In addition, since the first indication information is sent by the network device to the terminal device, the interference between the signals sent by the terminal device is reduced, and at the same time, the system capacity is improved.

[0023] Based on the second aspect, in a possible design, the terminal device determines the transmission power of the signal on the first channel based on the power control method of the first channel, and sends a signal to the network device based on the transmission power of the signal on the first channel.

[0024] Since the terminal device sends a signal to the network device based on the power control method of the first channel indicated by the first indication information, the possibility that the network device receives the signal sent by the terminal device is increased.

[0025] For example, the network device may generate the first indication information by referring to network characteristics such as the network load situation so as to select a more appropriate power control method for the terminal device. Therefore, when sending a signal based on the power control method indicated by the first indication information, the terminal device can better adapt to the current network environment, and thus the possibility that the network device receives the signal sent by the terminal device is increased.

[0026] Based on the second aspect, in a possible design, the first channel is a physical uplink shared channel, or the first channel is a physical uplink control channel, or the first channel is a physical random access channel, or the first channel is another uplink transmission channel other than the physical uplink shared channel, the physical uplink control channel, and the physical random access channel.

[0027] Based on the second aspect, in a possible design, the first parameter is at least one of RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, preamble trial times, power ramping step, path loss estimation ratio coefficient, signal transmission iteration times, and power indication parameter.

[0028] Based on the second aspect, in a possible design, the second parameter is at least one of RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, preamble trial times, power ramping step, path loss estimation ratio coefficient, signal transmission iteration times, and power indication parameter.

[0029] Based on the second aspect, in a possible design, a signal that satisfies the first transmission format and is on the first channel can be specifically implemented as follows. The number of repeated transmissions satisfies the first condition, and the signal is on the first channel. The MCS level satisfies the second condition, and the signal is on the first channel. The transport block size satisfies the third condition, and the signal is on the first channel, or The coverage level satisfies the fourth condition, and the signal is on the first channel.

[0030] The first condition, the second condition, the third condition, and the fourth condition may be pre-configured on the network device or may be configured by the network device.

[0031] ​​When the first condition, the second condition, the third condition, and the fourth condition are configured by the network device, when the terminal device transmits a signal based on the power control method indicated by the first instruction information, it can better adapt to the current network environment and the like.

[0032] Based on the second aspect, in a possible design, the first instruction information is carried by a system message, or the first instruction information is carried by other upper layer signaling other than the system message.

[0033] According to the third aspect, a network device including a processor and a transceiver is provided. The processor is configured to generate the first instruction information, and the transceiver is configured to transmit the first instruction information to the terminal device, where the first instruction information is used to indicate the power control method of the first channel, the power control method of the first channel is one of the power control methods in the power control method set, and the power control method set includes the following power control methods, that is, the transmission power of the signal on the first channel is determined by the terminal device based on the first parameter, the transmission power of the signal on the first channel that meets the first transmission format is determined by the terminal device based on the second parameter, the transmission power of the signal on the first channel that does not meet the first transmission format is determined by the terminal device, and the transmission power of the signal on the first channel that does not meet the first transmission format is the maximum transmission power of the terminal device, and the transmission power of the signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device including at least one of them.

[0034] Based on the third aspect, in a possible design, the transceiver is further for the first channel and is configured to receive a signal transmitted by the terminal device based on the power control method indicated by the first instruction information.

[0035] Based on the third aspect, in a possible design, the first parameter is at least one of RSRP, path loss, transmit bandwidth parameter, maximum transmit power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmit power, offset power, preamble trial number, power ramping step, path loss estimation ratio coefficient, signal transmission iteration number, and power indication parameter including.

[0036] Based on the third aspect, in a possible design, the second parameter is at least one of RSRP, path loss, transmit bandwidth parameter, maximum transmit power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmit power, offset power, preamble trial number, power ramping step, path loss estimation ratio coefficient, signal transmission iteration number, and power indication parameter including.

[0037] According to the fourth aspect, an embodiment of the present application provides an instruction information transmission device, and this device has a function of implementing the behavior of the network device in the above method embodiment. This function may be implemented by hardware or by hardware that executes corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0038] According to the fifth aspect, an embodiment of the present application provides a computer storage medium configured to store computer software instructions for implementing the technical solution of the first aspect and any design provided in the first aspect, and the computer software instructions include a program used to execute the first aspect and any design provided in the first aspect.

[0039] According to the sixth aspect, a terminal device including a transceiver and a processor is provided. The transceiver is configured to receive first instruction information transmitted by a network device, and the first instruction information is used to indicate a power control method for a first channel. The power control method for the first channel is one of the power control methods in a set of power control methods, and the set of power control methods includes the following power control methods, that is, the transmission power of a signal on the first channel is determined by the terminal device based on a first parameter, the transmission power of a signal on the first channel that meets a first transmission format is determined by the terminal device based on a second parameter, the transmission power of a signal on the first channel that does not meet the first transmission format is determined by the terminal device, and the transmission power of a signal on the first channel that does not meet the first transmission format is the maximum transmission power of the terminal device, and the transmission power of a signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device including at least one of the above.

[0040] The processor is configured to determine the power control method for the first channel based on the first instruction information.

[0041] Based on the sixth aspect, in a possible design, the processor is further configured to determine the transmission power of a signal on the first channel based on the power control method for the first channel, and the transceiver is further configured to transmit a signal to the network device based on the transmission power of the signal on the first channel.

[0042] Based on the sixth aspect, in a possible design, the first parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, number of preamble attempts, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of them.

[0043] Based on the sixth aspect, in a possible design, the second parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, number of preamble attempts, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of them.

[0044] According to the seventh aspect, an embodiment of the present application provides an instruction information receiving device, and this device has a function of implementing the behavior of the terminal device in the above method embodiment. This function may be implemented by hardware or by hardware that executes corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The module can be software and / or hardware.

[0045] According to the eighth aspect, an embodiment of the present application provides a computer storage medium configured to store computer software instructions for implementing the technical solution of the second aspect and any design provided in the second aspect, and the computer software instructions include a program used to execute the second aspect and any design provided in the second aspect.

[0046] According to the ninth aspect, one embodiment of the present application provides a communication system including the network device of the third aspect and any design provided in the third aspect, and the terminal device of the sixth aspect and any design provided in the sixth aspect.

Brief Description of the Drawings

[0047]

Figure 1

Figure 2

Figure 3

Figure 4a

Figure 4b

Figure 5a

Figure 5b

Figure 6

Modes for Carrying Out the Invention

[0048] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0049] As shown in FIG. 1, FIG. 1 is an architecture diagram of a communication system used in an embodiment of the present application. The communication system includes a network device and a terminal device. FIG. 1 shows only one terminal device. However, the communication system used in the embodiment of the present application may include one or more terminal devices. This is not limited here. For example, the communication system used in the embodiment of the present application may be a Long Term Evolution (LTE) system, or another wireless communication system such as a Global System for Mobile Communications (GSM) for mobile communication, a Universal Mobile Telecommunications System (UMTS), a Code Division Multiple Access (CDMA) system, or a new network system. The NB-IoT system of the LTE system is used as an example below to explain the embodiment of the present application in detail. When the communication system is another communication system, the procedure is the same as that of the NB-IoT system. Details are not described here. In the NB-IoT system, it should be understood that the physical uplink shared channel is also called NPUSCH, the physical uplink control channel is also called the Narrowband Physical Uplink Control Channel (NPUCCH), and the physical random access channel is also called NPRACH, etc.

[0050] It should be understood that the network device in the embodiments of the present application can be a device that communicates with a wireless terminal by using one or more sectors on an air interface in a base station, an access point, or an access network. When the network device is a base station, the base station may be configured to mutually convert received over-the-air frames and Internet Protocol (IP) packets, and be used as a router between the wireless terminal and the rest of the access network, and the rest of the access network may include an IP network. The base station may be configured to adjust the attribute management of the air interface. For example, the base station may be a Base Transceiver Station (BTS) in a GSM or CDMA system, a Node B in a Wideband Code Division Multiple Access (WCDMA (registered trademark)), or an evolutional Node B (eNB) in an LTE system. This is not limited in the embodiments of the present application.

[0051] It should be understood that the terminal device in the embodiments of the present application may be a device configured to provide voice and / or data connectivity to a user, a handheld device with a wireless connection function, or another processing device connected to a wireless modem. Alternatively, the terminal may be a wireless terminal. The wireless terminal may communicate with one or more core networks using a Radio Access Network (RAN). The wireless terminal may be a mobile terminal such as a mobile phone (also referred to as a "cellular" phone), or a computer equipped with a mobile terminal. For example, a computer equipped with a mobile terminal may be a portable, pocket-sized, handheld, computer-integrated, or in-vehicle mobile device that exchanges voice and / or data with a wireless access network. For example, the wireless terminal may alternatively be a device such as a Personal Communication Service (PCS) phone, a cordless phone set, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant (PDA). The wireless terminal may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point (AP), a Remote Terminal, an Access Terminal, a User Terminal, a User Agent, a User Device, a User Equipment, etc. The embodiments of the present application are not limited thereto.

[0052] In the embodiments of the present application, since the network device can indicate the power control method of the first channel to the terminal device using the first indication information, the network device can, based on network characteristics such as the current load status or the current signal transmission status of the network device, indicate the power control method of the first channel to the terminal device. Therefore, the flexibility of signal transmission from the terminal device to the network device is improved, and the power control of the terminal device can better adapt to the current communication network.

[0053] It should be understood that the power control method in the embodiments of the present application may also be referred to as a power control standard, a power control mode, a power control method, a power control behavior, a power control performance, a power control parameter, etc. This is not limited here. The power control method of the first channel is used to indicate a method for determining the transmission power of a signal on the first channel.

[0054] For ease of explanation, in the embodiments of the present application, an explanation is provided by using a base station as the network device. This is merely an example in the embodiments of the present application, and the present application includes, but is not limited to, examples.

[0055] As shown in FIG. 2, the method for transmitting and receiving indication information in an embodiment of the present application includes the following steps.

[0056] Step 200: The base station generates first indication information, where the first indication information is used to indicate the power control method of the first channel, the power control method of the first channel is one of the power control methods in the power control method set, and the power control method set includes the following power control methods, that is, The transmission power of the signal on the first channel is determined by the terminal device based on the first parameter. Satisfy the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device based on the second parameter, do not satisfy the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device, do not satisfy the first transmission format, the transmission power of the signal on the first channel is the maximum transmission power of the terminal device, and The transmission power of the signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device includes at least one of the following.

[0057] Step 210: The base station transmits the first instruction information to the terminal device.

[0058] After receiving the first instruction information transmitted by the base station, the terminal device determines the power control method of the first channel based on the first instruction information.

[0059] Specifically, the first channel in this embodiment of the present application may be a physical uplink shared channel, a physical uplink control channel, or a physical random access channel, or the first channel is another uplink transmission channel other than the physical uplink shared channel, the physical uplink control channel, or the physical random access channel. This is not limited in this embodiment of the present application.

[0060] For example, in this embodiment of the present application, the first indication information is a bit value, and different bit values correspond to different power control methods. For example, the power control method set includes three power control methods. In the power control method corresponding to the bit value 00, the transmission power of the signal on the first channel is determined by the terminal device based on the first parameter. In the power control method corresponding to the bit value 01, satisfying the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device based on the second parameter, not satisfying the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device, not satisfying the first transmission format, the transmission power of the signal on the first channel is the maximum transmission power of the terminal device. In the power control method corresponding to the bit value 11, the transmission power of the signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device. In the power control method that needs to be indicated to the terminal device by the base station, when the transmission power of the signal on the first channel is determined by the terminal device based on the first parameter, the first indication information is the bit value 00. Further, the first indication information may be a sequence or the like, and its implementation form is the same as that when the first indication information is a bit value. Details are not described here.

[0061] In this embodiment of the present application, when the power control method set includes two power control methods, the base station may indicate one of the power control methods by transmitting the first indication information, or indicate the other power control method by not transmitting information. For example, when there is information in the information field carrying the first indication information, such as the bit value 1, one power control method in the power control method set is indicated, or when the information field carrying the first indication information is null, the other power control method in the power control method set is indicated.

[0062] Optionally, in this embodiment of the present application, the first instruction information may be carried in a system message and then sent to the terminal device, or the first instruction information may be carried in other upper-layer signaling other than the system message and then sent to the terminal device. This is not limited in this embodiment of the present application.

[0063] For example, in an NB-IoT system, the first instruction information may be carried in system information. Specifically, the first instruction information may be carried in the RACH-ConfigCommon information field of SIB2-NB. In addition, the first instruction information may alternatively be carried in the Master Information Block (MIB) or any System Information Block (SIB).

[0064] For example, the first instruction information may alternatively be carried in Radio Resource Control (RRC) signaling. In a specific implementation, an NB-IoT system is used as an example, and the first instruction information may be carried in the Radio Resource Config Dedicated-NB information field, or the first instruction information may be carried in the Physical Config Dedicated-NB information field, or the first instruction information may be carried in the uplink Power Control Dedicated information field.

[0065] The power control methods that may be included in the power control method set will be specifically described individually below.

[0066] The first power control method is as follows. The transmission power of the signal on the first channel is determined by the terminal device based on the first parameter.

[0067] In this power control method, the terminal device determines the transmission power of the signal on the first channel. Specifically, it should be noted that the terminal device always determines the transmission power of the signal on the first channel in an open-loop power control method based on the first parameter. For example, the terminal device determines the transmission power of the signal in NPUSCH based on the path loss, and determines the transmission power of the signal in NPRACH based on the preamble initial power and the number of repetitions for transmitting the preamble, etc.

[0068] In this power control method, the terminal device determines the transmission power of the signal on the first channel based on the actual requirements. Therefore, when there is a relatively heavy load or interference limitation in the communication network, compared with the method of transmitting signals based on the maximum transmission power of the terminal device, the system capacity can be improved to a certain extent, and the interference between the signals of the terminal device can be reduced.

[0069] Specifically, in this embodiment of the present application, the first parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, preamble trial number, power ramping step, path loss estimation ratio coefficient, number of repetitions of signal transmission, and power indication parameter includes at least one of the above. Any one of the above may be transmitted from the base station to the terminal device using signaling, may be measured by the terminal device, may be obtained by the terminal device through calculation, or may be predefined in the terminal device. For example, the first channel is a physical random access channel, and the number of iterations used by the terminal device to determine the transmission power of a signal having a transmission bandwidth, the maximum transmission power of the terminal device, a preamble reception target power, an initial preamble reception target power, an offset power, a power ramping step, a path loss estimation ratio coefficient, or different coverage levels on the physical random access channel may be the same or different. It should be further noted that the initial transmission power is the initial transmission power of the signal on the first channel.

[0070] Taking the NB-IoT system as an example. For example, when the first channel is NPUSCH and the first parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation ratio coefficient, the transmission power of the signal on the NPUSCH satisfies the following formula.

[0071]

Equation

[0072] In the formula, P NPUSCH,c (i) represents the transmission power of the signal on the physical uplink shared channel within time slot i, and P CMAX,c (i) represents the maximum transmission power used by the terminal device to transmit a signal on the physical uplink shared channel in subframe i within cell c, and M NPUSCH,c (i) represents a transmission bandwidth parameter, specifically, the bandwidth coefficient of the signal on the physical uplink shared channel within time slot i, and P O_NPUSCH,c(j) represents the initial transmission power of the dynamically scheduled NPUSCH when j = 1, or represents the initial transmission power of Message 3 in the random access process when j = 2, α c (j) represents the path loss estimation rate. Specifically, when j = 1, it represents the path loss estimation ratio coefficient of the dynamically scheduled NPUSCH, or when j = 2, it represents the path loss estimation ratio coefficient of Message 3 in the random access process, PL c is that of cell c and represents the downlink path loss measured by the terminal device. dBm is the unit of power.

[0073] The NB-IoT system is used as an example. For example, when the first channel is NPRACH and the first parameters include path loss, the maximum transmission power of the terminal device, the preamble reception target power, the initial preamble reception target power, the offset power, the number of preamble attempts, the power ramping step, and the number of signal transmission repetitions, the transmission power of the signal on NPRACH satisfies the following formula.

[0074]

Equation

[0075] and Specifically, P PRT =P PIRT +P DP +(N p1 -1)×P S -10log 10 N p2 wherein, P NPRACH represents the transmission power of the signal on NPRACH, P CMAX,c (i) represents the maximum transmission power of the terminal device. Specifically, in subframe i within cell c, it represents the maximum transmission power used by the terminal device to transmit a signal on the physical random access channel, P PRT represents the preamble reception target power, PL crepresents the downlink path loss of cell c, which is measured by the terminal device, and P PIRT represents the preamble initial reception target power, and P DP represents the offset power, specifically, the power offset of the preamble, and N p1 represents the number of preamble attempts, specifically, the number of times to attempt to transmit the preamble. For example, when the terminal device attempts the 5th transmission, the value of N p1 is 5, and P S represents the power ramp step, specifically, the power value increased during the re-access by the terminal device after a random access failure, and N p2 represents the number of repetitions of the current preamble transmission.

[0076] The above power control method is used only as an example for illustration. In this embodiment of the present application, it should be understood that the first parameter may include at least one of RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, number of preamble attempts, power ramp step, path loss estimation ratio coefficient, number of repetitions, and power indication parameter. The transmission bandwidth parameter is used to represent the transmission bandwidth of the signal or the value corresponding to the transmission bandwidth, and the power indication parameter is a parameter or parameter set other than RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, number of preamble attempts, power ramp step, path loss estimation ratio coefficient, and number of repetitions, which is used in the process of determining the transmission power of the signal on the first channel.

[0077] The second power control method is as follows. The transmission power of a signal on the first channel that satisfies the first transmission format is determined by the terminal device based on the second parameter. The transmission power of a signal on the first channel that does not satisfy the first transmission format is determined by the terminal device. The transmission power of a signal on the first channel that does not satisfy the first transmission format is the maximum transmission power of the terminal device.

[0078] In this power control method, the first transmission format may be configured by the base station or may be pre-set.

[0079] Specifically, a signal on the first channel that satisfies the first transmission format may be such that the number of retransmission times satisfies the first condition, a signal on the first channel, the MCS level satisfies the second condition, a signal on the first channel, the transport block size satisfies the third condition, a signal on the first channel, or the coverage level satisfies the fourth condition, a signal on the first channel. It can be.

[0080] In this embodiment of the present application, the first condition, the second condition, the third condition, or the fourth condition may be pre-set at the base station or may be configured by the base station. When the first condition, the second condition, the third condition, or the fourth condition is configured by the base station, the base station may execute the corresponding configuration based on the current load situation of the network system, etc.

[0081] For example, if the number of retransmissions satisfies a first condition, a signal on a first channel can be a signal with the number of retransmissions less than a first threshold and on the first channel, a signal with the number of retransmissions less than or equal to the first threshold and on the first channel, a signal with the number of retransmissions greater than the first threshold and on the first channel, or a signal with the number of retransmissions greater than or equal to the first threshold and on the first channel. The first threshold may be set in advance. For example, the first threshold may be set to 2. Alternatively, the first threshold may be set by a base station. For example, when the load of the base station is relatively large, if the number of retransmissions satisfies the first condition and the signal on the first channel is a signal with the number of retransmissions less than the first threshold and on the first channel, or a signal with the number of retransmissions less than or equal to the first threshold and on the first channel, the first threshold may be set to a larger value to improve system capacity. For example, the first threshold may be configured as 16 or the like.

[0082] Alternatively, a signal on a first channel for which the number of retransmissions satisfies a first condition can be a signal with the number of retransmissions within a specific range and on the first channel. The specific range may be determined by a base station or may be set in advance. The specific range may be a continuous range, for example, a positive integer between N1 and N2, or a discontinuous range, for example, a positive integer between N1 and N2 and a positive integer between N3 and N4. N1, N2, N3, and N4 are different positive integers.

[0083] For example, if the MCS level satisfies the second condition and the signal is on the first channel, it can be a signal with an MCS level less than the first level and on the first channel, a signal with an MCS level less than or equal to the first level and on the first channel, a signal with an MCS level greater than the first level and on the first channel, or a signal with an MCS level greater than or equal to the first level and on the first channel. The first level may be set in advance. For example, the first level value may be set to 1. Alternatively, the first level may be set by the base station. For example, when the load of the base station is relatively light, if the MCS level satisfies the second condition and the signal on the first channel is a signal with an MCS level less than the first level and on the first channel or a signal with an MCS level less than or equal to the first level and on the first channel, the base station may set the first level to a smaller value in order to provide better service to the terminal device. For example, the base station sets the first level to 1. Alternatively, when the load of the base station is relatively heavy, if the MCS level satisfies the second condition and the signal on the first channel is a signal with an MCS level less than the first level and on the first channel or a signal with an MCS level less than or equal to the first level and on the first channel, the base station may set the first level to a larger value in order to improve the system capacity. For example, the base station sets the first level to 4.

[0084] For example, an NB-IoT system is used as an example, and it includes N MCS levels such as MCS level 0, MCS level 1, …, MCS level (N−1). The MCS levels that are signals and satisfy the second condition are a subset of the N MCS levels. For example, a signal whose MCS level satisfies the second condition and is on the first channel can be a signal whose MCS level is within a specific MCS level range and is on the first channel. For example, the specific MCS level range includes MCS level 3, MCS level 4, and MCS level 9. Specifically, the specific MCS level range may be configured by a base station or may be pre-set. This is not limited here.

[0085] For example, if the transport block size of a signal on the first channel satisfies the third condition, the transport block size of the signal on the first channel can be less than a second threshold, equal to the second threshold, greater than the second threshold, or greater than or equal to the second threshold. The second threshold may be pre-configured or set by a base station. For example, when the second threshold is set by a base station, the base station can perform corresponding settings based on the load situation of the base station to reduce the interference between signals transmitted by terminal devices in the network system so that the signal transmission in the network is dynamically balanced.

[0086] Alternatively, a signal on the first channel whose transport block size satisfies the third condition can be a signal whose transport block size is within a specific range. The specific range may be configured by a base station or may be pre-set. This is not limited here.

[0087] For example, if the coverage level satisfies the fourth condition and the signal on the first channel may be a signal on the first channel with a coverage level less than the second level, a signal on the first channel with a coverage level less than or equal to the second level, a signal on the first channel with a coverage level greater than the second level, or a signal on the first channel with a coverage level greater than or equal to the second level. The second level is a specific coverage level, which may be preconfigured or set by the base station. For example, the NPRACH of the NB-IoT system is used as an example, and N coverage levels such as coverage level 0, coverage level 1, …, coverage level (N−1) are included. The second level may be coverage level 0, coverage level 1, …, or coverage level (N−1). When the second level is set by the base station, the base station may perform corresponding settings based on the load situation of the base station to reduce the interference between signals transmitted by terminal devices in the network system so that the signal transmission in the network is dynamically balanced.

[0088] For example, if the coverage level satisfies the fourth condition, the signal on the first channel may alternatively be a signal on the first channel with a coverage level within a specific coverage level range. The specific coverage level range may be configured by the base station or may be pre-set. This is not limited here.

[0089] Specifically, in this embodiment of the present application, the second parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, preamble trial times, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of the above. Any one of the above may be transmitted from the base station to the terminal device using signaling, may be measured by the terminal device, may be obtained by the terminal device through calculation, or may be predefined in the terminal device. For example, the first channel is a physical random access channel, and the transmission bandwidth, the maximum transmission power of the terminal device, the preamble reception target power, the initial preamble reception target power, the offset power, the power ramping step, the path loss estimation ratio coefficient, or the number of iterations used by the terminal device to determine the transmission power of signals having different coverage levels on the physical random access channel may be the same or different. It should be further noted that the initial transmission power is the initial transmission power of the signal on the first channel.

[0090] Taking the NB-IoT system as an example. For example, when the first channel is NPUSCH and the second parameter includes the maximum transmission power of the terminal device, the transmission bandwidth parameter, the path loss, the initial transmission power, and the path loss estimation ratio coefficient, it satisfies the first transmission format, and the transmission power of the signal on the NPUSCH satisfies the following formula.

[0091] [Number]

[0092] In the formula, P NPUSCH,c (i) represents the transmission power of the signal on the physical uplink shared channel within time slot i, and P CMAX,c (i) represents the maximum transmission power used by the terminal device to transmit a signal on the physical uplink shared channel in time slot i, and M NPUSCH,c (i) represents the transmission bandwidth parameter, specifically, the bandwidth coefficient of the signal on the physical uplink shared channel within time slot i, and P O_NPUSCH,c(j) represents the initial transmission power of the dynamically scheduled NPUSCH when j = 1, or represents the initial transmission power of Message 3 in the random access process when j = 2, α c (j) represents the path loss estimation rate. Specifically, when j = 1, it represents the path loss estimation ratio coefficient of the dynamically scheduled NPUSCH, or when j = 2, it represents the path loss estimation ratio coefficient of Message 3 in the random access process, PL c represents the downlink path loss determined by the terminal device, and dBm is the unit of power.

[0093] The transmission power of the signal on the NPUSCH that does not meet the first transmission format is the maximum transmission power of the terminal device.

[0094] The NB-IoT system is used as an example. For example, the first channel is NPRACH, the second parameter is path loss, the maximum transmission power of the terminal device, the preamble reception target power, the initial preamble reception target power, the offset power, the number of preamble attempts, meets the first transmission format, and the transmission power of the signal on the NPRACH satisfies the following formula.

[0095]

Equation

[0096] and Specifically, P PRT = P PIRT + P DP +(N p1 - 1) × P S - 10log 10 N p2 wherein, P NPRACH represents the transmission power of the signal on the NPRACH that meets the first transmission format, P CMAX,c(i) represents the maximum transmission power of the terminal device. Specifically, in subframe i within cell c, it represents the maximum transmission power used by the terminal device to transmit a signal on the physical random access channel, P PRT represents the preamble reception target power, PL c is that of cell c and represents the downlink path loss measured by the terminal device, P PIRT represents the preamble initial reception target power, P DP represents the offset power. Specifically, it represents the power offset of the preamble, N p1 represents the number of preamble attempts. Specifically, it is the number of times to attempt to transmit the preamble. For example, when the terminal device attempts the 5th transmission, the value of N p1 is 5, and P S represents the power ramp step. Specifically, it represents the increased power value during the re - access by the terminal device after a random access failure, N p2 represents the number of repetitions of the current preamble transmission.

[0097] Not meeting the first transmission format, the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device.

[0098] The above power control method is used only as an example for explanation. In this embodiment of the present application, it should be understood that the second parameter may include at least one of RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, number of preamble attempts, power ramping step, path loss estimation ratio coefficient, number of iterations, and power indication parameter. The transmission bandwidth parameter is used to represent the transmission bandwidth of the signal or a value corresponding to the transmission bandwidth, and the power indication parameter is used in the process of determining the transmission power of the signal on the first channel, which is a parameter or parameter set other than RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, offset power, number of preamble attempts, power ramping step, path loss estimation ratio coefficient, and number of iterations. It should be further noted that the initial transmission power is the initial transmission power of the signal on the first channel.

[0099] The third power control method is as follows. The transmission power of the signal on the first channel is determined by the terminal device according to rules defined in advance in the terminal device. The rules defined in advance in the terminal device can be methods, functions, mapping relationships, etc. that can be used by any terminal device to determine the final transmission power of the signal. The terminal device determines the transmission power of the signal on the first channel without being affected by or controlled by the base station so as to ensure the maximum signal transmission efficiency of the terminal device. For example, the terminal device always determines that the transmission power of the signal on the first channel is the maximum transmission power of the terminal device so that the data to be transmitted by the terminal device can be transmitted to the base station with low latency and high reliability.

[0100] FIG. 3 shows a signal transmission method based on the power control method in the embodiment of the present application. In addition to steps 200 to 220 of the transmission and reception method of the instruction information shown in FIG. 2, this method further includes the following steps.

[0101] Step 310: The terminal device determines the transmission power of the signal on the first channel based on the power control method of the first channel.

[0102] Step 320: The terminal device transmits a signal to the base station based on the transmission power of the signal on the first channel, and then the base station receives the signal transmitted by the terminal.

[0103] Since the terminal device can determine the transmission power of the signal on the first channel using the first instruction information transmitted by the base station, the interference between the signal transmitted by the terminal device and the signal transmitted by another terminal device is relatively small. Therefore, the possibility that the terminal device can transmit a signal to the base station normally is increased.

[0104] Based on the same concept, an embodiment of the present application further provides a network device. The network device is configured to perform the actions or functions of the network device in the above method embodiments.

[0105] Based on the same concept, an embodiment of the present application further provides a terminal device. The terminal device is configured to perform the actions or functions of the terminal device in the above method embodiments.

[0106] An embodiment of the present application further provides a communication system including the network device and the terminal device in the above embodiments.

[0107] For the sake of brevity, for the content of the device part, please specifically refer to the method embodiments. Details will not be repeated.

[0108] Figure 4a shows a network device 400a according to an embodiment of the present application. The network device 400a includes a processing module 410a and a transceiver module 420a. The processing module 410a is configured to generate first instruction information. The first instruction information is used to indicate the power control method of the first channel, the power control method of the first channel is one of the power control methods in the power control method set, and the power control method set includes the following power control methods, that is, The transmission power of the signal on the first channel is determined by the terminal device based on the first parameter, Satisfy the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device based on the second parameter, do not satisfy the first transmission format, the transmission power of the signal on the first channel is determined by the terminal device, do not satisfy the first transmission format, the transmission power of the signal on the first channel is the maximum transmission power of the terminal device, and The transmission power of the signal on the first channel is determined by the terminal device according to a rule defined in advance in the terminal device including at least one of.

[0109] The transceiver module 420a is configured to transmit the first instruction information to the terminal device.

[0110] In a possible implementation, the transceiver module 420a is for the first channel and is configured to receive a signal transmitted by the terminal device based on the power control method indicated by the first instruction information.

[0111] In a possible implementation, the first parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, preamble initial reception target power, initial transmission power, offset power, preamble trial times, power ramp step, path loss estimation ratio coefficient, signal transmission iteration times, and power indication parameter includes at least one of them.

[0112] In a possible implementation form, the second parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, preamble trial number, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of them.

[0113] It should be noted that in this embodiment of the present application, the processing module 410a may be implemented by a processor, and the transceiver module 420a may be implemented by a transceiver. Specifically, the transceiver includes a receiver and a transmitter, the receiver is configured to receive signals or data, and the transmitter is configured to transmit signals or data.

[0114] As shown in FIG. 4b, FIG. 4b is a schematic structural diagram of the hardware of the network device 400b according to an embodiment of the present application. The network device 400b may include a processor 410b, a transceiver 420b, and a memory 430b. The memory 430b may be configured to store a program / code pre-installed when the network device 400b is shipped from the factory, and may also store code executed by the processor 410b.

[0115] The processor 410b may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute related operations to implement the technical solutions provided in the embodiments of the present application.

[0116] It should be noted that for the network device 400b shown in FIG. 4b, only the processor 410b, the transceiver 420b, and the memory 430b are shown, but those skilled in the art should understand that in a specific implementation process, the network device 400b may further include other components necessary for normal execution. Furthermore, those skilled in the art should understand that based on specific requirements, the network device 400b may further include hardware components for implementing other additional functions. In addition, the network device 400b may include only the components or modules necessary to implement this embodiment of the present application, but those skilled in the art should understand that it is not necessary to include all the components shown in FIG. 4b.

[0117] Those skilled in the art will understand that all or some of the procedures for implementing the methods of the above embodiments may be implemented by a computer program that instructs the relevant hardware. The above program may be stored in a computer-readable storage medium, and when the program is executed, the procedures of the above method embodiments may be implemented. The above storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), or the like.

[0118] FIG. 5a shows a terminal device 500a according to an embodiment of the present application. The terminal device 500a includes a transceiver module 510a and a processing module 520a. The transceiver module 510a is configured to receive first instruction information transmitted by a network device. The first instruction information is used to indicate the power control method of the first channel, the power control method of the first channel is one of the power control methods in the set of power control methods, and the set of power control methods includes the following power control methods, namely, The transmission power of the signal on the first channel is determined by the terminal device based on the first parameter. The transmission power of a signal on the first channel that meets the first transmission format is determined by the terminal device based on a second parameter, and the transmission power of a signal on the first channel that does not meet the first transmission format is determined by the terminal device, and the transmission power of a signal on the first channel that does not meet the first transmission format is the maximum transmission power of the terminal device, and The transmission power of a signal on the first channel is determined by the terminal device according to rules defined in advance in the terminal device includes at least one of the following.

[0119] The processing module 520a is configured to determine the power control method of the first channel based on the first instruction information.

[0120] In a possible design, the processing module 520a is further configured to determine the transmission power of a signal on the first channel based on the power control method of the first channel.

[0121] The transceiver module 510a is configured to transmit a signal to the network device based on the transmission power of the signal on the first channel.

[0122] In a possible design, the first parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, preamble trial times, power ramping step, path loss estimation ratio coefficient, signal transmission iteration times, and power indication parameter includes at least one of the following.

[0123] In a possible design, the second parameter is RSRP, path loss, transmission bandwidth parameter, maximum transmission power of the terminal device, preamble reception target power, initial preamble reception target power, initial transmission power, offset power, preamble trial count, power ramping step, path loss estimation ratio coefficient, number of signal transmission repetitions, and power indication parameter includes at least one of them.

[0124] In this embodiment of the present application, it should be noted that the processing module 520a may be implemented by a processor, and the transceiver module 510a may be implemented by a transceiver. Specifically, the transceiver includes a receiver and a transmitter. The receiver is configured to receive signals or data, and the transmitter is configured to transmit signals or data.

[0125] As shown in FIG. 5b, FIG. 5b is a schematic structural diagram of the hardware of the terminal device 500b according to an embodiment of the present application. The terminal device 500b may include a processor 510b, a transceiver 520b, and a memory 530b. The memory 530b may be configured to store a program / code pre-installed when the terminal device 500b is shipped from the factory, or may store code executed by the processor 55b.

[0126] The processor 510b may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits, and is configured to execute related operations to implement the technical solutions provided in the embodiments of the present application.

[0127] It should be noted that for the terminal device 500b shown in FIG. 5b, only the processor 510b, the transceiver 520b, and the memory 530b are shown, but those skilled in the art should understand that in a specific implementation process, the terminal device 500b may further include other components necessary for normal execution. Furthermore, those skilled in the art should understand that based on specific requirements, the terminal device 500b may further include hardware components for implementing other additional functions. In addition, the terminal device 500b may include only the components or modules necessary to implement this embodiment of the present application, but those skilled in the art should understand that it is not necessary to include all the components shown in FIG. 5b.

[0128] Those skilled in the art will understand that all or some of the procedures for implementing the methods of the above embodiments may be implemented by a computer program that instructs the relevant hardware. The above program may be stored in a computer-readable storage medium, and when the program is executed, the procedures of the above method embodiments may be implemented. The storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, or the like.

[0129] FIG. 6 shows a communication system 600 according to an embodiment of the present application. The communication system 600 includes the network device shown in FIG. 4a and the terminal device shown in FIG. 5a.

[0130] Those skilled in the art should understand that the embodiments of the present application can be provided in the form of a method, a system, or a computer program product. Therefore, the embodiments of the present application may use the form of an embodiment using only hardware, an embodiment using only software, or an embodiment using a combination of software and hardware. Furthermore, the embodiments of the present application can use the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0131] Embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the implementation forms of the present application. It should be understood that computer program instructions can be used to implement each process and / or each block in the flowchart and / or block diagram, as well as combinations of processes and / or blocks in the flowchart and / or block diagram. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or another programmable data processing device to create a machine, and thus the instructions executed by the processor of the computer or another programmable data processing device are to generate an apparatus for performing a specific function in one or more processes in the flowchart and / or one or more blocks in the block diagram.

[0132] These computer program instructions can be stored in a computer-readable memory so that the computer or another programmable data processing device can be instructed to operate in a specific manner to generate an artifact including an instruction device. The instruction device performs a specific function within one or more processes in the flowchart and / or within one or more blocks in the block diagram.

[0133] These computer program instructions can be loaded onto a computer or another programmable data processing device, and thus a series of operations and steps are executed on the computer or another programmable data processing device, thereby generating a computer-implemented process. Therefore, the instructions executed on a computer or another programmable data processing device provide steps for performing a specific function in one or more processes in the flowchart and / or one or more blocks in the block diagram.

[0134] Obviously, those skilled in the art can make various modifications and changes to this application without departing from the spirit and scope of this application. This application is intended to cover the modifications and changes of this application on the condition that it is within the scope of protection defined by the following claims and their equivalent technologies.

Description of Reference Signs

[0135] 400a Network Device 400b Network Device 410a Processing Module 410b Processor 420a Transceiver Module 420b Transceiver 430b Memory 500a Terminal Device 500b Terminal Device 510a Transceiver Module 510b Processor 520a Processing Module 520b Transceiver 530b Memory 600 Communication System

Claims

1. A communication method in a terminal device, comprising: determining whether first indication information for determining transmission power of a signal on a narrowband physical uplink shared channel (NPUSCH) is received based on a first parameter; when it is determined that the first indication information is received, determining the transmission power of the signal on the NPUSCH based on the first parameter; when it is determined that the first indication information is not received, when the number of repetitions of the signal on the NPUSCH is less than or equal to a first threshold, determining the transmission power of the signal on the NPUSCH based on a second parameter, and when the number of repetitions of the signal on the NPUSCH is greater than the first threshold, determining that the transmission power of the signal on the NPUSCH is the maximum transmission power of the terminal device either; transmitting the signal on the NPUSCH based on the determined transmission power of the signal. A communication method comprising the steps of.

2. The method according to claim 1, wherein the first threshold is 2.

3. The method according to claim 1 or 2, wherein the first indication information is carried in a system information block 2 - narrowband (SIB2 - NB).

4. The first parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient, the transmission power of the signal on the NPUSCH is determined based on the first parameter according to the following formula 【Number 1】 wherein, P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The method according to claim 1, 2, or 3.

5. The second parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient, the transmission power of the signal on the NPUSCH is determined based on the second parameter according to the following formula 【Number 2】 wherein, P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The method according to any one of claims 1 to 4.

6. A communication method in a network device, comprising: determining a method for a terminal device to determine transmission power of a signal on a narrowband physical uplink shared channel (NPUSCH), the method comprising: determining the transmission power of the signal on the NPUSCH according to a first parameter for determining the transmission power; When the number of repetitions of the signal on the NPUSCH is less than or equal to a first threshold, determining the transmission power of the signal on the NPUSCH according to a second parameter for determining the transmission power; When the number of repetitions of the signal on the NPUSCH is greater than the first threshold, determining that the transmission power of the signal on the NPUSCH is the maximum transmission power of the terminal device; A determining step including one of the above; Sending first indication information to the terminal device to instruct determining the transmission power of the signal on the NPUSCH based on the first parameter, and based on the second parameter, for instructing to determine the transmission power of the signal on the NPUSCH, or for instructing that the transmission power of the signal on the NPUSCH is determined to be the maximum transmission power of the terminal device, performing at least one of not sending the first indication information to the terminal device; A communication method including the above.

7. The method according to claim 6, wherein the first threshold is 2.

8. The method according to claim 6 or 7, wherein the first indication information is carried in System Information Block 2 - Narrow Band (SIB2-NB).

9. The first parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient. The transmission power of the signal on the NPUSCH is 【Mathematics 3】 Determined based on the first parameter according to the following formula, where P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The method according to claim 6, 7, or 8.

10. The second parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient. The transmission power of the signal on the NPUSCH is 【Number 4】 Determined based on the second parameter according to the following formula. P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The method according to any one of claims 6 to 9.

11. A communication device, A processor; A memory coupled to the processor and including instructions that, when executed by the processor, cause the communication device to Determine whether first indication information for determining the transmission power of a signal on a Narrowband Physical Uplink Shared Channel (NPUSCH) based on a first parameter for determining the transmission power is received. When it is determined that the first indication information has been received, the processor determines the transmission power of the signal on the NPUSCH based on the first parameter, When it is determined that the first indication information has not been received, the processor When the number of repetitions of the signal on the NPUSCH is less than or equal to a first threshold, based on a second parameter, the transmission power of the signal on the NPUSCH, and When the number of repetitions of the signal on the NPUSCH is greater than the first threshold, the transmission power of the signal on the NPUSCH is the maximum transmission power of the terminal device to determine, a memory, a transmitter configured to send the signal based on the transmission power of the signal on the NPUSCH A communication device comprising.

12. The communication device according to claim 11, wherein the first threshold is 2.

13. The communication device according to claim 11 or 12, wherein the first indication information is carried in System Information Block 2-Narrowband (SIB2-NB).

14. The first parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient, The transmission power of the signal on the NPUSCH is the following formula 【Number 5】 is determined based on the first parameter according to, where in the formula, P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The communication device according to claim 11, 12, or 13.

15. The second parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient, The transmission power of the signal on the NPUSCH is the following formula 【Number 6】 is determined based on the second parameter according to, P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The communication device according to any one of claims 11 to 14.

16. A processor configured to determine a method for determining the transmission power of a signal on a narrowband physical uplink shared channel (NPUSCH) of a terminal device, the method being determining the transmission power of the signal on the NPUSCH according to a first parameter for determining the transmission power; when the number of repetitions of the signal on the NPUSCH is less than or equal to a first threshold, determining the transmission power of the signal on the NPUSCH according to a second parameter for determining the transmission power; When the number of repetitions of the signal on the NPUSCH is greater than a first threshold, determining that the transmission power of the signal on the NPUSCH is the maximum transmission power of the terminal device A processor including one of Sending first indication information to the terminal device to instruct determining the transmission power of the signal on the NPUSCH based on the first parameter, and based on the second parameter, or to instruct determining that the transmission power of the signal on the NPUSCH is the maximum transmission power of the terminal device, not sending the first indication information to the terminal device, performing at least one of A transmitter configured as A communication device comprising

17. The communication device according to claim 16, wherein the first threshold is 2

18. The communication device according to claim 16 or 17, wherein the first indication information is carried in System Information Block 2-Narrow Band (SIB2-NB)

19. The first parameter includes the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient The transmission power of the signal on the NPUSCH 【Number 7】 Is determined based on the first parameter according to the following formula P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The communication device according to claim 16, 17, or 18

20. The second parameter includes one of the maximum transmission power of the terminal device, a transmission bandwidth parameter, a path loss, an initial transmission power, and a path loss estimation coefficient The transmission power of the signal on the NPUSCH 【Number 8】 Is determined based on the second parameter according to the following formula P NPUSCH,c (i) represents the transmission power of the signal on the NPUSCH within time slot i, P CMAX,c (i) represents the maximum transmission power of the terminal device, M PUSCH,c (i) represents the transmission bandwidth parameter, P O_NPUSCH,c (j) represents the initial transmission power, a c (j) represents the path loss estimation coefficient, PL c represents the path loss The communication device according to any one of claims 16 to 19

21. A communication method in a terminal device, comprising Determining whether first indication information for determining the transmission power of a signal on a Narrowband Physical Random Access Channel (NPRACH) is received based on a first parameter for determining the transmission power After determining that the first indication information is received, determining the transmission power of the signal on the NPRACH based on the first parameter After determining that the first indication information has not been received When the coverage level of the signal on the NPRACH is equal to or lower than a second level, based on a second parameter for determining transmission power, the transmission power of the signal on the NPRACH, and when the coverage level of the signal on the NPRACH is greater than the second level, determining that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device a determining step; a step of sending the signal based on the determined transmission power of the signal on the NPRACH A communication method comprising the steps of:

22. The method according to claim 21, wherein the second level is a coverage level 0.

23. The first parameter includes path loss, the maximum transmission power of the terminal device, and a preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the first parameter according to the following formula 【Number 9】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, and PL c represents the path loss. The method according to claim 21 or 22.

24. The second parameter includes path loss, the maximum transmission power of the terminal device, and a preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the second parameter according to the following formula 【Number 10】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, and PL c represents the path loss. The method according to claim 21, 22, or 23.

25. A communication method in a network device, comprising: a step of determining a method for determining the transmission power of a signal on a narrowband physical random access channel (NPRACH) by a terminal device, the method including determining the transmission power of the signal on the NPRACH according to a first parameter for determining transmission power; when the coverage level of the signal on the NPRACH is equal to or lower than a second level, determining the transmission power of the signal on the NPRACH according to a second parameter for determining transmission power; when the coverage level of the signal on the NPRACH is greater than the second level, determining that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device a determining step including one of the above; Sending first indication information to the terminal device to instruct determining the transmission power of the signal on the NPRACH based on the first parameter, and not sending the first indication information to the terminal device to instruct determining the transmission power of the signal on the NPRACH based on the second parameter or to instruct that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device, performing at least one of the steps A communication method including the above steps **Claim 26** The method according to claim 25, wherein the second level is coverage level 0 **Claim 27** The first parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the first parameter according to the following formula 【Number 11】 wherein P NPRACH represents the transmission power of the signal on the NPRACH, P CMAX,c (i) represents the maximum transmission power of the terminal device, P PRT represents the preamble reception target power, PL c represents the path loss The method according to claim 25 or 26 **Claim 28** The second parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the second parameter according to the following formula 【Number 12】 wherein P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, and PL c represents the path loss The method according to claim 25, 26, or 27 **Claim 29** A processor configured to determine whether first indication information for determining the transmission power of a signal on a narrowband physical random access channel (NPRACH) based on a first parameter for determining the transmission power is received After determining that the first indication information is received, the processor determines the transmission power of the signal on the NPRACH based on the first parameter After determining that the first indication information has not been received, the processor When the coverage level of the signal on the NPRACH is equal to or lower than a second level, based on a second parameter for determining the transmission power, the transmission power of the signal on the NPRACH, and When the coverage level of the signal on the NPRACH is greater than the second level, determining that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device is determined A processor, A transmitter configured to send the signal based on the transmission power of the signal on the NPRACH A communication device comprising the same.

30. The communication device according to claim 29, wherein the second level is coverage level 0.

31. The first parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the first parameter according to the following formula 【Number 13】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, PL c represents the path loss. The communication device according to claim 29 or 30.

32. The second parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the second parameter according to the following formula 【Number 14】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, P CMAX,c (i) represents the maximum transmission power of the terminal device, P PRT represents the preamble reception target power, PL c represents the path loss The communication device according to claim 29, 30, or 31.

33. A processor configured to determine a method for determining the transmission power of a signal on a narrowband physical random access channel (NPRACH) of a terminal device, the method including Determining the transmission power of the signal on the NPRACH according to a first parameter for determining the transmission power; When the coverage level of the signal on the NPRACH is less than or equal to a second level, determining the transmission power of the signal on the NPRACH according to a second parameter for determining the transmission power; When the coverage level of the signal on the NPRACH is greater than the second level, determining that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device A processor including one of the above; After determining that the terminal device determines the transmission power of the signal on the NPRACH based on the first parameter, sending first indication information to the terminal device; The terminal device After determining that the transmission power of the signal on the NPRACH is determined based on the second parameter Or After determining that the transmission power of the signal on the NPRACH is the maximum transmission power of the terminal device, A transmitter configured not to send the first indication information to the terminal device A communication device comprising the same.

34. ​ The communication device according to claim 33, wherein the second level is coverage level 0.

35. The first parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the first parameter according to the following formula 【Number 15】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, and PL c represents the path loss. The communication device according to claim 33 or 34.

36. The second parameter includes path loss, the maximum transmission power of the terminal device, and preamble reception target power, and the transmission power of the signal on the NPRACH is determined based on the second parameter according to the following formula 【Number 16】 wherein, P NPRACH represents the transmission power of the signal on the NPRACH, and P CMAX,c (i) represents the maximum transmission power of the terminal device, and P PRT represents the preamble reception target power, and PL c represents the path loss The communication device according to claim 33, 34, or 35.

37. A communication system comprising the communication device according to any one of claims 16 to 20 and the communication device according to any one of claims 11 to 15, or the communication device according to any one of claims 33 to 36 and the communication device according to any one of claims 29 to 32.

38. A computer recording medium recording computer software instructions for implementing the method according to any one of claims 1 to 5, the method according to any one of claims 6 to 10, the method according to any one of claims 21 to 24, or the method according to any one of claims 25 to 28.

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