Power control method and related device

Abstract

The present invention relates to the field of wireless communication technology, and in particular to a power control method and related equipment. The method comprises: determining a first transmission power; if the first transmission power is greater than the power limited by the power spectrum density, sending first information to a network device. The network device may determine second information, wherein the second information comprises joint adjustment information of uplink transmission power and physical resource blocks; and sending the second information to a terminal device so that the terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information. The embodiment of the present invention can issue a prompt to the network device when the transmission power of the terminal device exceeds the power limited by the power spectrum density. Furthermore, the network device may adjust the transmission power and physical resource blocks of the terminal device to achieve control of the transmission power of the terminal device.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a power control method and related equipment. Background Art

[0002] In wireless communication systems, power control is very important. For example, by controlling the uplink power of the terminal device, the quality of the uplink data sent by the terminal device can be guaranteed, and the interference to other terminal devices in the system can be minimized, and the battery life of the terminal device can be extended. However, the power control schemes currently proposed are mainly based on licensed frequency bands. With the expansion of wireless services, the licensed frequency bands can no longer meet current business needs. For example, 5G communication services have been expanded to unlicensed frequency bands. In unlicensed frequency bands, there are more stringent requirements for power control. The transmission power of the equipment working on it cannot exceed the limit of the power spectrum density. The power control method in the existing 5G system is no longer applicable to unlicensed frequency bands. Under the premise of expanding wireless services to unlicensed frequency bands, how to perform power control has become a problem that needs to be solved. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a power control method and related equipment, which can send a prompt to a network device when the transmit power of a terminal device exceeds the power spectrum density limit. Further, the network device can adjust the transmit power and physical resource block of the terminal device to achieve control of the transmit power of the terminal device, so that the transmit power of the terminal device can meet the requirements on different frequency bands.

[0004] In a first aspect, an embodiment of the present invention provides a power control method, comprising: determining a first transmit power; if the first transmit power is greater than the power limited by the power spectrum density, sending first information to a network device. Based on the above power control method, when the transmit power of a terminal device exceeds the power limited by the power spectrum density, first information is sent to the network device to inform the network device that it is currently in a power-limited state. The network device can dynamically adjust the uplink transmit power and the number of resource blocks of the terminal device according to the first information.

[0005] Optionally, the first transmission power is calculated according to a first power control parameter group, and the first power control parameter group is determined according to first uplink information sent by a terminal device, and the first power control parameter group at least includes frequency domain width information of a first channel resource.

[0006] Optionally, the power spectrum density limiting power is determined according to limited power spectrum density and frequency domain width information of the first channel resource.

[0007] Optionally, the frequency domain width information includes one or more of the following information:

[0008] The number of resource blocks;

[0009] Resource block spacing;

[0010] Number of subcarriers;

[0011] Subcarrier spacing.

[0012] Optionally, the first transmit power is calculated based on the second power control parameter group and a single channel resource assumed when no uplink information is transmitted.

[0013] Optionally, the power spectrum density limiting power is determined based on at least one of a limited power spectrum density and a frequency domain width of an assumed single channel resource.

[0014] Optionally, the limited power spectrum density is pre-configured according to a communication protocol; or, the limited power spectrum density is configured according to high-level signaling from a network device.

[0015] Optionally, the first information includes one or more of the following:

[0016] A prompt message indicating that the first transmission power exceeds the power spectrum density limit;

[0017] The power spectral density limits the power;

[0018] Request for reallocation of channel resources.

[0019] Optionally, the first information is carried in one or more of the following signalings:

[0020] Radio Resource Control (RRC) signaling;

[0021] Media Access Control (MAC) Control Element (CE), referred to as MAC CE;

[0022] Uplink Control Information (UCI);

[0023] Power Headroom Report (PHR).

[0024] In second aspect, an embodiment of the present invention provides a power control method, comprising: receiving first information, wherein the first information is sent when the first transmission power of the terminal device is greater than the power spectrum density limit power; determining second information based on the first information, wherein the second information includes joint adjustment information of the uplink transmission power and the physical resource block.

[0025] Optionally, the first information includes one or more of the following:

[0026] A prompt message indicating that the first transmission power exceeds the power spectrum density limit;

[0027] Power spectral density limits power;

[0028] Request for reallocation of channel resources.

[0029] Optionally, the first information is carried in one or more of the following signaling: RRC signaling, MAC CE, UCI or PHR.

[0030] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power and allocation information of physical resource blocks are indicated by the first field.

[0031] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power is indicated by a first field, and the allocation information of physical resource blocks is indicated by a second field.

[0032] Optionally, the first field is a transmission power control (Transmission Power Control, TPC) field, and the second field is a physical resource block indication field.

[0033] Optionally, the second information is carried in downlink control information (Downlink Control Information, DCI) or RRC signaling.

[0034] In a third aspect, an embodiment of the present invention provides a power control method, comprising: determining second information, wherein the second information includes joint adjustment information of uplink transmission power and physical resource blocks; sending the second information to a terminal device, so that the terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information. In an embodiment of the present invention, the network device can actively adjust the uplink transmission power and the physical resource blocks occupied by the uplink transmission of the terminal device based on the second information. The terminal device receives the joint adjustment information sent by the network device, and adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission based on the joint adjustment information.

[0035] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power and allocation information of physical resource blocks are indicated by the first field.

[0036] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power is indicated by a first field, and the allocation information of physical resource blocks is indicated by a second field.

[0037] Optionally, the first field is a TPC field, and the second field is a physical resource block indication field.

[0038] Optionally, the second information is carried in DCI or RRC signaling.

[0039] In a fourth aspect, an embodiment of the present invention provides a power control method, comprising: receiving second information sent by a network device, the second information comprising joint adjustment information of uplink transmission power and physical resource blocks; adjusting the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information.

[0040] Optionally, the joint adjustment information is obtained through the first field, and the joint adjustment information includes adjustment information of uplink transmission power and allocation information of the physical resource block.

[0041] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power is obtained through the first field; and the allocation information of physical resource blocks is obtained through the second field.

[0042] Optionally, the second information is carried in DCI or RRC signaling.

[0043] In the fifth aspect, an embodiment of the present invention provides a terminal device, comprising: at least one processor; and at least one memory communicatively connected to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method as described in any possible embodiment of the first aspect or the fourth aspect.

[0044] In the sixth aspect, an embodiment of the present invention provides a network device, comprising: at least one processor; and at least one memory communicatively connected to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method described in any possible embodiment of the second aspect or the third aspect.

[0045] In the seventh aspect, an embodiment of the present invention provides a communication chip, comprising: a processor, which is used to execute computer program instructions stored in a memory, wherein when the computer program instructions are executed by the processor, the communication chip is triggered to execute the method described in any possible embodiment above.

[0046] In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the method described in any of the above possible embodiments.

[0047] The above solution of the embodiment of the present invention can send a prompt to the network device when the transmission power of the terminal device exceeds the power limit of the power spectrum density. Further, the network device can adjust the transmission power and physical resource block of the terminal device to achieve control of the transmission power of the terminal device, so that the transmission power of the terminal device can meet the requirements on different frequency bands. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 is a schematic diagram of a scenario of a communication system provided by an embodiment of the present invention;

[0050] Figure 2 is a flow chart of a power control method provided by an embodiment of the present invention;

[0051] Figure 3 is a flow chart of another power control method provided by an embodiment of the present invention;

[0052] Figure 4 is a flow chart of another power control method provided by an embodiment of the present invention;

[0053] Figure 5 is a flow chart of another power control method provided by an embodiment of the present invention;

[0054] Figure 6 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention;

[0055] Figure 7 It is a structural diagram of a network device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] Figure 1 1 is a schematic diagram of a communication system provided by an embodiment of the present invention. The communication system 100 may be a wireless communication system, and the wireless communication system may operate in a licensed frequency band or an unlicensed frequency band. It is understandable that the use of unlicensed frequency bands may increase the system capacity of the wireless communication system, improve channel access efficiency, improve spectrum resource utilization, and ultimately improve system performance.

[0058] like Figure 1 As shown, the communication system 100 may include at least one network device 101 and at least one terminal device 102, and the network device 101 and the terminal device 102, the terminal device 102 and the terminal device 102, and the network device 101 and the network device 101 are connected through wired or wireless communication technology. It should be noted that Figure 1 The number and form of the terminal devices 102 and network devices 101 shown do not constitute a limitation on the embodiments of the present invention. In different embodiments, the network device 101 may also be connected to a core network device. Figure 1 Shown in.

[0059] It should be noted that the wireless communication systems mentioned in the embodiments of the present invention include but are not limited to: Narrow Band-internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data Rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (CDMA2000), Time Division-Synchronization Code Division Multiple Access (TDSCDMA), Long Term Evolution (LTE), fifth-generation mobile communication systems, vehicle-mounted wireless short-range communication systems, and future mobile communication systems.

[0060] In the embodiment of the present invention, the above-mentioned network device 101 is a device deployed in a wireless access network to provide wireless communication functions for the terminal device 102. The network device 101 may include but is not limited to a base station (Base Station, BS), a station (Station, STA, including an access point (Access Point, AP) and a non-AP station STA), a network controller, a transmission and reception point (Transmission and Reception Point, TRP), a mobile switching center or a wireless access point in wifi, etc. Exemplarily, the device that directly communicates with the terminal device 102 through a wireless channel is usually a base station. The base station may include various forms of macro base stations, micro base stations, relay stations, access points or remote radio units (Remote Radio Unit, RRU), etc. Of course, other network devices 101 with wireless communication functions may also be used to communicate wirelessly with the terminal device 102, and this application does not make a sole limitation on this.

[0061] The terminal device 102 may include, for example, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., which is a device that provides voice and / or data communication to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, a wearable device, a computing device, or other processing devices linked to a wireless modem. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control (Industrial Control), wireless terminals in self-driving (Self Driving), wireless terminals in remote medical surgery (Remote Medical Surgery), wireless terminals in smart grids (Smart Grid), wireless terminals in transportation safety (Transportation Safety), wireless terminals in smart cities (Smart City), wireless terminals in smart homes (Smart Home), etc.

[0062] It should be noted that the name of the device may be different in different systems. For example, in the LTE network, the base station is called the evolved Node B (eNB or eNodeB), in the 3rd Generation (3G) network, it is called Node B, etc. In the 5G network, it is called a 5G base station (NR Node B, gNB).

[0063] In wireless communication systems, power control is very important. For example, in the unlicensed frequency band near 60GHz, the power spectral density (Power Spectral Density) of terminal devices and network devices is limited. That is, if the frequency domain width of the signal is 1MHz, its maximum transmit power cannot exceed a certain set value XdBm. In the power control method of an embodiment of the present invention, when the first transmit power of the terminal device exceeds the power spectral density limit power, a first message can be sent to the network device to prompt the network device to adjust the uplink transmit power of the terminal device and the physical resource blocks occupied by the uplink transmission, so that the transmit power of the terminal device meets the power spectral density requirements.

[0064] Figure 2is a flow chart of a power control method provided by an embodiment of the present invention. The execution subject of the method may be Figure 1 The terminal device in the system shown. The processing steps of the method include:

[0065] 201, the terminal device determines a first transmission power. In some embodiments, the first transmission power may be an actual transmission power of the first information when the terminal device has uplink information to transmit. In some embodiments, the first transmission power may also be a reference transmission power calculated when there is no uplink information to transmit.

[0066] 202. If the first transmission power is greater than the power limited by the power spectrum density, the terminal device sends a first message to the network device. The power spectrum density limited power may be a power determined according to the limited power spectrum density, which may be used as a limiting threshold of the first transmission power. When the first transmission power exceeds the power limited by the power spectrum density, the first message is sent to the network device. The first message is used to prompt the network device that the transmission power of the current terminal device exceeds the power limited by the power spectrum density. After receiving the first message, the network device may send a second message to the terminal device so that the terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the second message.

[0067] In some embodiments, when the terminal device has uplink information to transmit, the first transmit power can be calculated based on the first power control parameter group. The first power control parameter group is determined based on the first uplink information sent by the terminal device, and the first power control parameter group includes at least the frequency domain width information of the first channel resource. The first channel resource is the channel resource used to transmit the first uplink information. The frequency domain width information is used to indicate the frequency domain width of the first channel resource. In some embodiments, the frequency domain width information may include one or more of the number of resource blocks, the resource block interval, the number of subcarriers, and the subcarrier interval. For example, the frequency domain width information includes the number of resource blocks, and the number of subcarriers included in each resource block is a fixed value, such as 12. That is, the frequency domain width information only includes the number of resource blocks. For another example, the frequency domain width information includes the number of resource blocks, the resource block interval, and the number of subcarriers included in each resource block is a fixed value. That is, when the uplink channel frequency domain resources include multiple physical resource blocks, the multiple physical resource blocks can be distributed at intervals. Of course, in some embodiments, the number of subcarriers and the subcarrier spacing included in each resource block can also be configured, and the frequency domain width information can also include the number of subcarriers and the subcarrier spacing included in each resource block. Optionally, the frequency domain width information can be configured according to high-level signaling from a network device. Optionally, the frequency domain width information can be carried in RRC signaling or system information block (SIB) signaling or DCI signaling.

[0068] Optionally, the terminal device may obtain the maximum transmission power P1 of the terminal device at the uplink transmission opportunity and the power P2 required for the terminal device to transmit the first uplink information according to the first power control parameter group. Wherein, P2 is at least determined according to the frequency domain width information of the first channel resource. The terminal device may determine the minimum value of P1 and P2 as the first transmission power.

[0069] Correspondingly, when the terminal device has uplink information transmission, the power spectrum density limited power can be determined according to the limited power spectrum density and the frequency domain width information of the first channel resource. In some embodiments, the limited power spectrum density can be pre-configured according to the communication protocol. The terminal device can determine the value of the limited power spectrum density according to the pre-configuration of the communication protocol. For example, the limited power spectrum density can be a natural number, such as 13dBm. In some embodiments, the limited power spectrum density can be configured according to high-level signaling from a network device. In some embodiments, the high-level signaling can be, for example, RRC signaling, SIB signaling, or DCI, etc.

[0070] Optionally, the terminal device can use the formula Determine the power spectrum density limit power. Where X represents the limited power spectrum density. M RB,b,f,c Indicates the number of physical resource blocks (PRBs) occupied by the first channel resources. Indicates the number of subcarriers contained in a single PRB.

[0071] In some embodiments, when there is no uplink information transmission, the terminal device may calculate the first transmission power based on the second power control parameter group and a single channel resource assumed when there is no uplink information transmission.

[0072] Among them, when there is no uplink information transmission, the terminal device can use the formula P 0_PUSCH,b,f,c (j)+α b,f,c (j) PL b,f,c (q d )+f b,f,c (i, l) calculates the first transmission power.

[0073] Among them, P 0_PUSCH,b,f,c (j) is the expected receiving power of the network device. 0_PUSCH,b,f,c (j) = P 0_NOMINAL_PUSCH,c (j)+P 0_UE_PUSCH,b,c (j), where P 0_NOMINAL_PUSCH,c (j) represents the PUSCH transmission power expected by the network device; P 0_UE_PUSCH,b,c (j) indicates the terminal device relative to P 0_NOMINAL_PUSCH,c (j) Power bias.

[0074] α b,f,c (j) represents the open-loop path loss compensation coefficient of the terminal device. The network device uses α b,f,c (j) Determine the weight of path loss in the uplink power control of the terminal equipment.

[0075] PL b,f,c (q d ) represents the estimated downlink path loss value estimated by the terminal equipment.

[0076] f b,f,c (i, l) represents the PUSCH transmission power adjustment amount of the terminal device at the activated UL-BWP transmission timing i in the serving cell c.

[0077] Accordingly, when the terminal device has no uplink information to transmit, the power spectrum density limiting power is determined based on at least one of the restricted power spectrum density and the frequency domain width of the assumed single channel resource.

[0078] Optionally, the terminal device can use the formula Determine the power spectrum density limited power. Wherein, X represents the limited power spectrum density. Indicates the number of subcarriers contained in a single PRB.

[0079] In some embodiments, the first information includes one or more of the following: prompt information that the first transmission power exceeds the power spectrum density limit; the power spectrum density limits the power; information requesting reallocation of channel resources.

[0080] In some embodiments, the first information is carried in one or more of the following signaling: RRC signaling, MAC CE, UCI and PHR. Optionally, when the first information is carried in PHR, the PHR may include the above-mentioned power spectrum density limit power.

[0081] Based on the above power control method, when the transmit power of the terminal device exceeds the power spectrum density limit power, the first information is sent to the network device to inform the network device that it is currently in a power-limited state. The network device can dynamically adjust the uplink transmit power and the number of resource blocks of the terminal device according to the first information.

[0082] Figure 3 is a flow chart of another power control method provided by an embodiment of the present invention. The execution subject of the method may be Figure 1 The network device in the system shown. The processing steps of the method include:

[0083] 210. The network device receives first information, which is sent when the first transmit power of the terminal device is greater than the power spectrum density limit power. Optionally, the first information may include one or more of the following: prompt information that the first transmit power exceeds the power spectrum density limit, the power spectrum density limit power, and information requesting reallocation of channel resources. The network device may jointly adjust the uplink transmit power and physical resource block resources of the terminal device according to the first information.

[0084] Optionally, the first information may be carried in one or more of RRC signaling, MAC CE, UCI and PHR. Of course, the first information may also be carried in other possible signaling, which are not listed here one by one. The network device obtains the first information from the one or more signalings.

[0085] 220. The network device determines second information according to the first information, the second information including joint adjustment information of uplink transmission power and physical resource blocks. Based on the joint adjustment information, the network device can adjust the uplink transmission power of the terminal device and the number of physical resource blocks occupied by the uplink channel.

[0086] In some embodiments, the joint adjustment information includes uplink transmit power adjustment information and physical resource block allocation information, wherein the uplink transmit power adjustment information and physical resource block allocation information can be indicated by a first field. Optionally, the first field can be a TPC field.

[0087] In some embodiments, when a DCI is associated with a physical uplink control channel (PUCCH) format 0 or PUCCH format 1 or PUCCH format 4, the network device may dynamically adjust the number of physical resource blocks (PRBs) occupied by the uplink PUCCH format 0 or PUCCH format 1 or PUCCH format 4 through the indication information in the DCI. The indication information may be indicated through the TPC field.

[0088]

[0089] Table 1

[0090] As shown in Table 1, when the TPC field is 00, it indicates that the uplink transmit power decreases by 1 dB and the PUCCH resource occupies 1 physical resource block. When the TPC field is 01, it indicates that the uplink transmit power remains unchanged and the PUCCH resource occupies 2 physical resource blocks. When the TPC field is 10, it indicates that the uplink transmit power increases by 1 dB and the PUCCH resource occupies 4 physical resource blocks. When the TPC field is 11, it indicates that the uplink transmit power increases by 3 dB and the PUCCH resource occupies 8 physical resource blocks. Optionally, the TPC field (such as 00, 01, 10 or 11) in the above Table 1 is a field that needs to be sent, and the terminal device can determine the adjustment information of the uplink transmit power and the allocation information of the physical resource block jointly indicated by the TPC field according to the communication protocol. Optionally, the TPC field in the above Table 1 and the adjustment information of the uplink transmit power (such as -1, 0, +1 or +3) and the allocation information of the physical resource block (such as 1, 2, 4 or 8) indicated by the TPC field can also be sent to the terminal device. It should be noted that the value of the above-mentioned TPC field, as well as the specific value of the uplink transmit power adjustment information and the physical resource block allocation information indicated by the TPC field can be adjusted according to actual needs. Optionally, the number of resource blocks indicated by the physical resource block allocation information is N, and N is a natural number not greater than 8. It can be seen that the embodiment of the present invention can jointly indicate the uplink transmit power adjustment information and the physical resource block allocation information through a field (such as the TPC field).

[0091] In some embodiments, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks. Optionally, the adjustment information of uplink transmit power can be indicated by a first field, and the allocation information of physical resource blocks can be indicated by a second field. That is, the adjustment information of uplink transmit power and the allocation information of physical resource blocks can be indicated by different fields. Optionally, the first field can be a TPC field, and the second field can be a physical resource block indication field. In some embodiments, the physical resource block indication field can be a custom extended field.

[0092] In some embodiments, when a DCI is associated with a PUCCH format 0, PUCCH format 1, or PUCCH format 4, the network device can dynamically adjust the number of physical resource blocks occupied by the uplink PUCCH format 0, PUCCH format 1, or PUCCH format 4 through the indication information in the DCI. The indication information can be jointly indicated by the TPC field and the PRB number indication field.

[0093]

[0094] Table 2

[0095] As shown in Table 2, when the TPC field is 00, it indicates that the uplink transmit power decreases by 1 dB. At this time, if the PRB number indication field is 0 or 1, it indicates that the PUCCH resource occupies 1 physical resource block. When the TPC field is 01, it indicates that the uplink transmit power remains unchanged. At this time, if the PRB number indication field is 0, it indicates that the PUCCH resource occupies 1 physical resource block. If the PRB number indication field is 1, it indicates that the PUCCH resource occupies 2 physical resource blocks. When the TPC field is 10, it indicates that the uplink transmit power increases by 1 dB. At this time, if the PRB number indication field is 0, it indicates that the PUCCH resource occupies 3 physical resource blocks. If the PRB number indication field is 1, it indicates that the PUCCH resource occupies 4 physical resource blocks. When the TPC field is 11, it indicates that the uplink transmit power increases by 3 dB. At this time, if the PRB number indication field is 0, it indicates that the PUCCH resource occupies 6 physical resource blocks. If the PRB number indication field is 1, it indicates that the PUCCH resource occupies 8 physical resource blocks. Optionally, the TPC field (such as 00, 01, 10 or 11) and the PRB number indication field in the above Table 2 are fields that need to be sent, and the terminal device can determine the adjustment information of the uplink transmit power and the allocation information of the physical resource block jointly indicated by the TPC field and the PRB number indication field according to the communication protocol. Optionally, the number of resource blocks indicated by the PRB number indication field is N, and N can be a natural number not greater than 8. In some embodiments, the second information is carried in the downlink control information DCI or RRC signaling. It can be seen that the embodiment of the present invention can jointly indicate the adjustment information of the uplink transmit power and the allocation information of the physical resource block through the TPC field and the PRB number indication field. Optionally, the TPC field and the PRB number indication field can be independent fields respectively, and optionally, the PRB number indication field can also be an extended field of the TPC field.

[0096] Figure 4 FIG. 1 is a flow chart of another power control method provided by an embodiment of the present invention. The execution subject of the method may be Figure 1 The network device in the system shown. The processing steps of the method include:

[0097] 301. The network device determines second information, where the second information includes joint adjustment information of uplink transmit power and physical resource blocks.

[0098] 302. The network device sends second information to the terminal device, so that the terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information.

[0099] In the embodiment of the present invention, the network device can actively adjust the uplink transmission power of the terminal device and the physical resource blocks occupied by the uplink transmission based on the second information. The second information can be carried in the downlink control information DCI or RRC signaling.

[0100] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power and allocation information of physical resource blocks are indicated by a first field. The first field may be a TPC field. The manner of jointly indicating the adjustment information of uplink transmit power and allocation information of physical resource blocks by the TPC field can be referred to Table 1 and related descriptions, which will not be repeated here.

[0101] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; the adjustment information of uplink transmit power is indicated by a first field, and the allocation information of physical resource blocks is indicated by a second field. The first field may be a TPC field, and the second field may be a physical resource block indication field. The manner of jointly indicating the adjustment information of uplink transmit power and the allocation information of physical resource blocks by using the TPC field and the physical resource block indication field can be referred to Table 2 and related instructions, and will not be repeated here.

[0102] Figure 5 FIG. 1 is a flow chart of another power control method provided by an embodiment of the present invention. The execution subject of the method may be Figure 1 The terminal device in the system shown. The processing steps of the method include:

[0103] 410. The terminal device receives second information sent by the network device, where the second information includes joint adjustment information of uplink transmission power and physical resource blocks. The second information may be carried in DCI or RRC signaling. The terminal device obtains the second information from the DCI or RRC signaling sent by the network device.

[0104] 420. The terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the above joint adjustment information.

[0105] In an embodiment of the present invention, a terminal device receives joint adjustment information sent by a network device, and adjusts uplink transmission power and physical resource blocks occupied by uplink transmission based on the joint adjustment information.

[0106] Optionally, the joint adjustment information includes the adjustment information of the uplink transmit power and the allocation information of the physical resource block. The adjustment information of the uplink transmit power and the allocation information of the physical resource block are indicated by the first field. The terminal device obtains the joint adjustment information through the first field, that is, obtains the adjustment information of the uplink transmit power and the allocation information of the physical resource block. Among them, the first field can be a TPC field. Among them, the way in which the TPC field indicates the adjustment information of the uplink transmit power and the allocation information of the physical resource block can be referred to Table 1 and related instructions, and will not be repeated here.

[0107] Optionally, the joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; wherein, the adjustment information of uplink transmit power can be indicated by a first field, and the allocation information of physical resource blocks can be indicated by a second field. Then the terminal device obtains the adjustment information of the uplink transmit power through the first field; and obtains the allocation information of the physical resource blocks through the second field. wherein, the first field can be a TPC field, and the second field can be a physical resource block indication field. wherein, the manner in which the TPC field and the physical resource block indication field jointly indicate the adjustment information of the uplink transmit power and the allocation information of the physical resource blocks can be referred to Table 2 and related instructions, and will not be repeated here.

[0108] Figure 6 Schematic diagram of the structure of a terminal device provided by an embodiment of the present invention. Figure 6 A simplified schematic diagram of a possible design structure of a terminal device involved in the above method embodiment is shown in FIG. The terminal device includes a transceiver 401, a processor 402, a memory 403 and a modem 404, and the transceiver 401, the processor 402, the memory 403 and the modem 404 are connected via a bus.

[0109] The transceiver 401 adjusts (e.g., analog conversion, filtering, amplification, up-conversion, etc.) the output sample and generates an uplink signal, which is transmitted to the network device in the above embodiment via the antenna. In the downlink, the antenna receives the downlink signal from the network device in the above embodiment. The transceiver 401 adjusts (e.g., filters, amplifies, down-converts, and digitizes, etc.) the signal received from the antenna and provides input samples. Exemplarily, in the modulation processor 404, the encoder 4041 receives the service data and signaling message to be sent on the uplink, and processes the service data and signaling message (e.g., formatting, encoding, and interleaving). The modulator 4042 further processes (e.g., symbol mapping and modulation) the encoded service data and signaling message and provides the above output samples. The demodulator 4043 processes (e.g., demodulates) the above input samples and provides symbol estimates. The decoder 4044 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages sent to the terminal device. The encoder 4041, modulator 4042, demodulator 4043, and decoder 4044 may be implemented by the synthesized modem 404. These units perform processing according to the wireless access technology (e.g., access technology of LTE, 5G, and other evolved systems) adopted by the wireless access network. Figure 6 In the illustrated embodiment, the transceiver 401 is integrated with a transmitter and a receiver. In other embodiments, the transmitter and the receiver may also be independent of each other.

[0110] The processor 402 controls and manages the terminal device, and is used to execute the steps of the processing performed by the terminal device in the above method embodiment. For example, it is used to control the terminal device to perform uplink transmission and / or other processes of the technology described in this application. As an example, the processor 402 is used to support the terminal device to perform Figure 2-Figure 5 The processing process of the terminal device is involved. For example, the transceiver 401 is used to control / receive downlink transmission signals through the antenna. In different embodiments, the processor 402 may include one or more processors, such as one or more CPUs, and the processor 402 may be integrated into a chip, or may be the chip itself.

[0111] The memory 403 is used to store relevant instructions and data, as well as the program code and data of the terminal. In different embodiments, the memory 403 includes but is not limited to a random access memory (Random Access Memory, RAM), a read-only memory (Read-Only Memory, ROM), an erasable programmable read-only memory (Erasable Programmable ReadOnly Memory, EPROM), a non-transitory computer readable storage medium (non-transitory computerreadable storage medium) or a portable read-only memory (Compact Disc Read-Only Memory, CDROM). In this embodiment, the memory 403 is independent of the processor 402. In other embodiments, the memory 403 can also be integrated in the processor 402.

[0112] Understandably, Figure 6 Only a simplified design of the terminal device is shown. In different embodiments, the terminal device may include any number of transmitters, receivers, processors, memories, etc., and all terminal devices that can implement the present application are within the protection scope of the present application.

[0113] Figure 7 1 is a schematic diagram of the structure of a network device provided by an embodiment of the present invention. Figure 7 A simplified schematic diagram of a possible design structure of the network device involved in the above method embodiment is shown in FIG. The network device includes a transceiver 501, a processor 502, a memory 503 and a modem 504, and the transceiver 501, the processor 502, the memory 503 and the modem 504 are connected via a bus.

[0114] The transceiver 501 adjusts (e.g., analog conversion, filtering, amplification, up-conversion, etc.) the output sampling and generates a downlink signal, which is transmitted to the terminal device in the above embodiment via an antenna. In the uplink, the antenna receives the uplink signal from the terminal device in the above embodiment. The transceiver 501 adjusts (e.g., filters, amplifies, down-converts, and digitizes, etc.) the signal received from the antenna and provides input sampling. Exemplarily, in the modulation processor 504, the encoder 5041 receives the service data and signaling message to be sent on the downlink, and processes the service data and signaling message (e.g., formatting, encoding, and interleaving). The modulator 5042 further processes (e.g., symbol mapping and modulation) the encoded service data and signaling message and provides the above output sampling. The demodulator 5043 processes (e.g., demodulates) the above input sampling and provides symbol estimation. The decoder 5044 processes (e.g., deinterleaves and decodes) the symbol estimation and provides decoded data and signaling messages sent to the network device. The encoder 5041, modulator 5042, demodulator 5043, and decoder 5044 may be implemented by the synthesized modem 504. These units perform processing according to the radio access technology (e.g., access technology of LTE, 5G, and other evolved systems) adopted by the radio access network. Figure 7 In the illustrated embodiment, the transceiver 501 is integrated with a transmitter and a receiver. In other embodiments, the transmitter and the receiver may be independent of each other.

[0115] The processor 502 controls and manages the network device, and is used to execute the steps of the processing performed by the network device in the above method embodiment. For example, it is used to control the network device to perform uplink transmission and / or other processes of the technology described in this application. As an example, the processor 502 is used to support the network device to perform Figure 2-Figure 5 The processing process of the network device is involved. For example, the transceiver 501 is used to control / receive uplink transmission signals through the antenna. In different embodiments, the processor 502 may include one or more processors, such as one or more CPUs, and the processor 502 may be integrated into a chip, or may be the chip itself.

[0116] The memory 503 is used to store relevant instructions and data, as well as the program code and data of the terminal. In different embodiments, the memory 503 includes but is not limited to a random access memory (Random Access Memory, RAM), a read-only memory (Read-Only Memory, ROM), an erasable programmable read-only memory (Erasable Programmable ReadOnly Memory, EPROM), a non-transitory computer readable storage medium (non-transitory computerreadable storage medium) or a portable read-only memory (Compact Disc Read-Only Memory, CDROM). In this embodiment, the memory 503 is independent of the processor 502. In other embodiments, the memory 503 can also be integrated in the processor 502.

[0117] Understandably, Figure 7 Only a simplified design of the network device is shown. In different embodiments, the network device may include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the present application are within the protection scope of the present application.

[0118] Corresponding to the above-mentioned device embodiment, the embodiment of the present invention further provides a communication system, which includes Figure 6 The terminal equipment and Figure 7 The network devices shown.

[0119] Furthermore, an embodiment of the present invention further provides a communication chip, which may be a chip for implementing a terminal device structure. Optionally, the communication chip includes: a processor, which is used to execute computer program instructions stored in a memory, wherein when the computer program instructions are executed by the processor, the communication chip is triggered to execute the method executed by the terminal device in the above embodiment.

[0120] In some embodiments, an embodiment of the present invention further provides a communication chip, which can be a chip for implementing a network device structure. Optionally, the communication chip includes: a processor, which is used to execute computer program instructions stored in a memory, wherein when the computer program instructions are executed by the processor, the communication chip is triggered to execute the method executed by the network device in the above embodiment.

[0121] In a specific implementation, the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and when the program is executed, the program may include some or all of the steps in each embodiment provided in the present application. The storage medium may be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM).

[0122] In a specific implementation, an embodiment of the present invention further provides a computer program product, which includes executable instructions. When the executable instructions are executed on a computer, the computer executes part or all of the steps in the above method embodiment.

[0123] In the embodiments of the present invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. A and B may be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c may be single or multiple.

[0124] Those skilled in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0125] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0126] In several embodiments provided by the present invention, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0127] The above is only a specific embodiment of the present invention. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A power control method, characterized in that: include: determining a first transmit power; If the first transmission power is greater than the power spectrum density limit power, a first message is sent to the network device; the first message includes one or more of the following: prompt information that the first transmission power exceeds the power spectrum density limit, the power spectrum density limit power, and information requesting reallocation of channel resources; receiving second information from the network device, where the second information is determined according to the first information and includes joint adjustment information of uplink transmit power and physical resource blocks; The first transmit power and the physical resource blocks occupied by uplink transmission are adjusted according to the joint adjustment information.

2. The method according to claim 1, characterized in that The first transmission power is calculated based on a first power control parameter group, and the first power control parameter group is determined based on first uplink information sent by a terminal device. The first power control parameter group at least includes frequency domain width information of a first channel resource.

3. The method according to claim 2, characterized in that The power spectrum density limiting power is determined according to the limited power spectrum density and the frequency domain width information of the first channel resource.

4. The method according to claim 3, characterized in that The frequency domain width information includes one or more of the following information: The number of resource blocks; Resource block spacing; Number of subcarriers; Subcarrier spacing.

5. The method according to claim 1, characterized in that The first transmission power is calculated based on the second power control parameter group and a single channel resource assumed when no uplink information is transmitted.

6. The method according to claim 5, characterized in that The power spectrum density limiting power is determined according to at least one of a limited power spectrum density and a frequency domain width of an assumed single channel resource.

7. The method according to claim 3 or 6, characterized in that: The limited power spectrum density is pre-configured according to a communication protocol; or, the limited power spectrum density is configured according to a high-level signaling from a network device.

8. The method according to claim 1, characterized in that The first information is carried in one or more of the following signalings: Radio Resource Control (RRC) signaling; MAC control unit; Uplink control information UCI; Power Headroom Report PHR.

9. A power control method, characterized in that: include: receiving first information, where the first information is sent when the first transmit power of the terminal device is greater than the power spectrum density limit power, and the first information includes one or more of the following: prompt information that the first transmit power exceeds the power spectrum density limit, the power spectrum density limit power, and information requesting reallocation of channel resources; Determine second information according to the first information, where the second information includes joint adjustment information of uplink transmit power and physical resource blocks: The second information is sent to the terminal device so that the terminal device adjusts the first transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information.

10. The method according to claim 9, characterized in that The first information is carried in one or more of the following signalings: Radio Resource Control (RRC) signaling; MAC control unit; Uplink control information UCI; Power Headroom Report PHR.

11. The method according to claim 9, characterized in that The joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; The adjustment information of the uplink transmission power and the allocation information of the physical resource block are indicated by the first field.

12. The method according to claim 9, characterized in that The joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; The adjustment information of the uplink transmission power is indicated by a first field, and the allocation information of the physical resource block is indicated by a second field.

13. The method according to claim 12, characterized in that The first field is a TPC field, and the second field is a physical resource block indication field.

14. The method according to claim 9, characterized in that The second information is carried in downlink control information DCI or RRC signaling.

15. A power control method, characterized in that: include: determining second information, wherein the second information includes joint adjustment information of uplink transmit power and physical resource blocks; The second information is sent to the terminal device so that the terminal device adjusts the uplink transmission power and the physical resource blocks occupied by the uplink transmission according to the joint adjustment information.

16. The method according to claim 15, characterized in that The joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; The adjustment information of the uplink transmission power and the allocation information of the physical resource block are indicated by the first field.

17. The method according to claim 16, characterized in that The joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; The adjustment information of the uplink transmission power is indicated by a first field, and the allocation information of the physical resource block is indicated by a second field.

18. The method according to claim 17, characterized in that The first field is a TPC field, and the second field is a physical resource block indication field.

19. The method according to claim 17 or 18, characterized in that The second information is carried in downlink control information DCI or RRC signaling.

20. A power control method, characterized in that: include: receiving second information sent by the network device, wherein the second information includes joint adjustment information of uplink transmit power and physical resource blocks; The uplink transmission power and the physical resource blocks occupied by the uplink transmission are adjusted according to the joint adjustment information.

21. The method according to claim 20, characterized in that The joint adjustment information is acquired through the first field, where the joint adjustment information includes adjustment information of uplink transmission power and allocation information of the physical resource block.

22. The method according to claim 21, characterized in that The joint adjustment information includes adjustment information of uplink transmit power and allocation information of physical resource blocks; Acquire the adjustment information of the uplink transmit power through the first field; The allocation information of the physical resource block is obtained through the second field.

23. The method according to any one of claims 20 to 22, characterized in that The second information is carried in downlink control information DCI or RRC signaling.

24. A terminal device, characterized in that: include: at least one processor; as well as at least one memory in communication with the processor, wherein: The memory stores program instructions executable by the processor, and the processor can execute the method according to any one of claims 1 to 8 or any one of claims 20 to 23 by calling the program instructions.

25. A network device, characterized in that: include: at least one processor; as well as at least one memory in communication with the processor, wherein: The memory stores program instructions executable by the processor, and the processor can execute the method according to any one of claims 9 to 14 or any one of claims 15 to 19 by calling the program instructions.

26. A communication chip, characterized in that: include: A processor, which is used to execute computer program instructions stored in a memory, wherein when the computer program instructions are executed by the processor, the communication chip is triggered to execute the method according to any one of claims 1 to 23.

27. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods of claims 1 to 23.

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