WO2019024101A1 - 无线通信方法和终端设备 - Google Patents
无线通信方法和终端设备 Download PDFInfo
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- WO2019024101A1 WO2019024101A1 PCT/CN2017/096072 CN2017096072W WO2019024101A1 WO 2019024101 A1 WO2019024101 A1 WO 2019024101A1 CN 2017096072 W CN2017096072 W CN 2017096072W WO 2019024101 A1 WO2019024101 A1 WO 2019024101A1
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- Prior art keywords
- uplink signal
- srs resource
- terminal device
- srs
- target uplink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/16—Deriving transmission power values from another channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Definitions
- the present application relates to the field of communications, and more particularly to a wireless communication method and terminal device.
- a base station can instruct a terminal device to determine an uplink transmit power to be used by configuring a power control parameter.
- LTE Long Term Evolution
- the communication performance is required to be high. Therefore, how to improve the transmission power of the terminal device to improve the communication performance is an urgent problem to be solved.
- the embodiment of the present invention provides a wireless communication method and device, which can determine the transmit power of another uplink signal as needed according to the transmit power of an uplink signal, without the network device reconfiguring the power control parameter of another uplink signal, and Can improve communication performance.
- a wireless communication method including:
- the terminal device determines a reference uplink signal of the target uplink signal
- the terminal device determines the transmit power of the target uplink signal according to the transmit power of the reference uplink signal
- the terminal device transmits the target uplink signal by using the determined transmit power.
- the target uplink signal may be a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), and a physical A Random Access Channel (PRACH), a Phase Tracking Reference Signal (PTRS), or a Sounding Reference Signal (SRS).
- PUSCH Physical Uplink Shared Channel
- PUCCH Physical Uplink Control Channel
- PRACH Physical A Random Access Channel
- PTRS Phase Tracking Reference Signal
- SRS Sounding Reference Signal
- the reference uplink signal is a PUSCH, a PUCCH, a PRACH, a PTRS, or an SRS.
- the target uplink signal and the reference uplink signal are the same type of uplink signal.
- the target uplink signal is an SRS transmitted on the first SRS resource
- the reference uplink signal is a first SRS resource association. SRS transmitted on the second SRS resource.
- the first SRS resource and the second SRS resource belong to the same SRS resource group.
- the second SRS resource is an SRS resource group configured by the network device as the first SRS resource in the SRS resource group; or,
- the second SRS resource is a preset SRS resource in the SRS resource group.
- the same SRS resource group is used for uplink beam management.
- the second SRS resource is a first SRS resource configured by the network device by using the SRS resource indication SRI for the terminal device Associated SRS resources.
- the target uplink signal is a PUSCH
- the terminal device determines a reference uplink signal of the target uplink signal, including:
- the terminal device determines the reference uplink signal based on the downlink control information DCI for scheduling the PUSCH.
- the target uplink signal is a PTRS
- the reference uplink signal is a PTRS-associated demodulation reference signal transmitted on the DMRS port. PUSCH or DMRS.
- the target uplink signal and the reference uplink signal send resources, time domain transmission resources, sending ports, and sending in a frequency domain. At least one of the beams satisfies a particular relationship.
- the target uplink signal and the reference uplink signal are sent on the same carrier or adjacent carriers.
- the target uplink signal and the reference uplink signal are sent by using the same port.
- the target uplink signal and the reference uplink signal are sent by using the same beam.
- the target uplink signal is an SRS
- the reference uplink signal is a PUSCH or a PUCCH that is sent last time before the SRS is sent.
- the target uplink signal is an uplink signal of the new wireless NR system
- the reference uplink signal is an uplink of the Long Term Evolution (LTE) system. signal.
- the terminal device determines, as the transmit power of the target uplink signal, the transmit power of the reference signal uplink signal.
- the terminal device obtains the transmit power of the target uplink signal based on the transmit power of the reference uplink signal and the offset value.
- a terminal device for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
- the terminal device comprises functional modules for performing the method of the first aspect or any of the possible implementations of the first aspect described above.
- a terminal device including a processor, a memory, and a transceiver.
- the processor, the memory, and the transceiver communicate with each other through an internal connection path, transmitting control and/or data signals, such that the network device performs the first aspect or any possible implementation of the first aspect The method in .
- a computer readable medium for storing a computer program, the computer program comprising instructions for performing any one of the methods described above or any possible implementation.
- the terminal device may determine the transmit power of the target uplink signal according to the transmit power of the reference uplink signal, and may implement the transmit power of the reference uplink signal, and determine the transmit power of the other signal as needed. Then, the power control parameters of another uplink signal are configured, and the communication performance can be improved.
- FIG. 1 is a schematic diagram of a wireless communication system in accordance with an embodiment of the present application.
- FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 4 is a schematic block diagram of a system chip in accordance with an embodiment of the present application.
- FIG. 5 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- NR New Radio
- FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
- the wireless communication system 100 can include a network device 110.
- Network device 100 can be a device that communicates with a terminal device.
- Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
- the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
- BTS Base Transceiver Station
- NodeB NodeB
- the network device can be a relay station, an access point, an in-vehicle device, a wearable device, Network side devices in future 5G networks or Network equipment in the future evolution of the Public Land Mobile Network (PLMN).
- PLMN Public Land Mobile Network
- the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
- Terminal device 120 can be mobile or fixed.
- the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
- the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
- D2D device to device communication
- D2D device to device
- the 5G system or network may also be referred to as a New Radio (NR) system or network.
- NR New Radio
- FIG. 1 exemplarily shows one network device and two terminal devices.
- the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device. The application embodiment does not limit this.
- the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.
- network entities such as a network controller, a mobility management entity, and the like.
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application.
- the method 200 is optionally applicable to the system shown in FIG. 1, but is not limited thereto.
- the method 200 includes at least some of the following.
- the terminal device determines a reference uplink signal of the target uplink signal.
- determining a reference uplink signal of the target uplink signal is used for the reference uplink signal
- the transmit power is a reference to determine the transmit power of the target uplink signal.
- the target uplink signal may be a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access channel (PRACH).
- PUSCH physical uplink shared channel
- PUCCH physical uplink control channel
- PRACH physical random access channel
- PTRS Phase Tracking Reference Signal
- SRS Sounding Reference Signal
- the reference uplink signal may be a PUSCH, a PUCCH, a PRACH, a PTRS, or an SRS.
- the signal referred to in this application is a channel (for example, the target uplink signal is PUSCH) means that the signal is transmitted through the channel.
- the target uplink signal and the reference uplink signal may be signals in different systems (networks), for example, the target uplink signal is an uplink signal of the NR system, and the reference uplink signal is an uplink signal of the LTE system.
- target uplink signal and the reference uplink signal may also be signals under the same system (network).
- the target uplink signal and the reference uplink signal may be different types of uplink signals.
- the type of the uplink signal can be distinguished by the manner in which the signal is transmitted or the purpose of the signal.
- the target uplink signal may be any one of a PUSCH, a PUCCH, a PRACH, a PTRS, and an SRS
- the reference uplink signal may be any one of a PUSCH, a PUCCH, a PRACH, a PTRS, and an SRS that is different from the target uplink signal.
- the target uplink signal is PUCCH
- the reference uplink signal may be SRS
- the target uplink signal is SRS
- the reference uplink signal may be PUCCH
- the target uplink signal and the reference uplink signal may be the same type of uplink signal.
- the target uplink signal is one SRS, and the reference uplink signal is another SRS; or, the target uplink signal is one PUCCH, and the reference uplink signal is also another PUCCH.
- the target uplink signal is an SRS transmitted on the first SRS resource
- the reference uplink signal is an SRS transmitted on the second SRS resource associated with the first SRS resource.
- the first SRS resource and the second SRS resource belong to the same SRS resource group.
- the SRS resource group may include multiple SRS resources.
- the parameter configuration of each of the multiple SRS resources is independent of the parameter configuration of the other SRS resources, and may include at least one of the following parameter configurations: sending the time domain resource occupied by the SRS; The frequency domain resource; the SRS sequence used to send the SRS; the number of times the SRS is sent after receiving the trigger signaling sent by the network device.
- the network side can allocate configuration parameters for each SRS resource with independent signaling.
- the second SRS resource is an SRS resource group configured by the network device as the first SRS resource in the SRS resource group.
- the network device may configure one reference SRS resource for all SRS resources in the SRS resource group (the reference SRS resource also belongs to the SRS resource group, for example, the SRS resource with the lowest index in the SRS resource group), and the terminal device may The transmit power of the SRS transmitted on the other SRS resources is determined based on the transmit power of the SRS transmitted on the reference SRS resource, so that the transmit power of the SRS transmitted on all SRS resources in the SRS resource may be the same.
- the network device may configure different reference SRS resources for different SRS resources in the SRS resource group.
- the reference resources configured for SRS resource 1 and SRS resource 2 may be SRS resource 3, and are SRS resource 4 and SRS resource 5
- the configured reference resource may be the SRS resource 6, so that the transmit power of the SRS resource 1 and the SRS resource 2 and the SRS resource 3 may be the same, and the transmit power of the SRS resource 4, the SRS resource 5, and the SRS resource 6 may be the same. .
- the second SRS resource may be a preset one SRS resource in the SRS resource group.
- the pre-set non-network device configuration mentioned here for example, one SRS resource specified in the protocol.
- a reference SRS resource may be preset for all SRS resources in the SRS resource group, and the terminal device may determine, according to a transmit power of the SRS sent on the reference SRS resource, a transmit power of the SRS sent on the other SRS resource, thereby The transmit power of the SRS transmitted on all SRS resources in the SRS resource may be the same.
- the reference SRS resources that may be preset for different SRS resources in the SRS resource group may be different.
- the reference resources preset for SRS resource 1 and SRS resource 2 may be SRS resource 3, and are SRS resources 4 and
- the SRS resource 5 preset reference resource may be the SRS resource 6, so that the SRS resource 1, the SRS resource 2, and the SRS resource 3 may transmit the SRS with the same transmit power, and the SRS resource 4, the SRS resource 5, and the SRS resource 6 transmit the SRS.
- Launch The power can be the same.
- the target uplink signal may be an SRS transmitted on multiple SRS resources, for example, may be an SRS transmitted on all SRS resources in one SRS resource group. If the SRS transmitted on one SRS resource group corresponds to one reference uplink signal, all SRS resources in the group can determine the same transmission power when transmitting the SRS, and thus used for uplink beam management.
- the SRS resource group is optionally a pre-configured SRS resource group for uplink beam management on the network side.
- the uplink beam management includes transmit beam management and/or receive beam management.
- the terminal device sends the SRS by using different transmit beams on the different SRS resources of the multiple SRS resources, and the network device may select at least one SRS resource indication to the terminal device based on the received signal strengths of the multiple SRS resources. Therefore, the terminal device uses the beam corresponding to the SRS resource to transmit data.
- the terminal device For receiving beam management, the terminal device transmits the SRS by using the same beam on multiple SRS resources, and the network device receives the SRS signals on multiple SRS resources based on different receiving beams, and selects a receiving beam for receiving data according to the received signal strength.
- the terminal device when performing beam management, may send the SRS by using the same transmit power.
- the network device can configure the same reference SRS resource for the SRS resource in the SRS resource group, so that the SRS resource in the SRS resource group can be implemented by using the transmit power of the SRS sent on the reference SRS resource.
- the transmission of the SRS enables the management of the uplink beam.
- the second SRS resource associated with the first SRS resource is an SRS resource that is associated with the first SRS resource configured by the network device by using a SRS Resource Indication (SRI) for the terminal device.
- SRI SRS Resource Indication
- the network device configures the SRS resource that transmits the target uplink signal
- the network device configures an associated SRS resource for the SRS resource by using the high layer signaling.
- the terminal device may transmit an SRS signal on an SRS resource group including the SRS resource indicated by the SRI, and different SRS resources may optionally use different transmit power transmissions.
- the network device may select one SRS resource 1 and may indicate the SRS resource 1 to the terminal device by using the SRI. Specifically, the network device may schedule uplink data transmission or schedule uplink control information transmission. The DCI is indicated to the terminal device. Therefore, the terminal device can adopt the SRS when transmitting the target uplink signal.
- the transmission power used for transmitting the SRS on the resource 1 (which may be the transmission power used for transmitting the SRS on the SRS resource 1 or the transmission power used for transmitting the SRS on the previous SRS resource 1) may be the same transmission power.
- the target uplink signal is a PUSCH; the terminal device may determine the reference uplink signal based on the downlink control information DCI of the scheduled PUSCH.
- the network device may indicate one SRS resource by scheduling DCI of the PUSCH, and use the SRS transmitted on the SRS resource as a reference uplink signal.
- the SRS may be indicated by the SRS resource indicated by the SRI carried in the DCI mentioned above, so that the terminal device may determine the transmit power of the PUSCH based on the transmit power of the SRS transmitted on the SRS resource.
- the SRS transmitted on the SRS resource indicated by the foregoing SRI may be used as a reference uplink signal of other target uplink signals except the PUSCH or the SRS, which is not specifically limited in this embodiment of the present application.
- the target uplink signal is a PTRS
- the reference uplink signal is a PUSCH or a DMRS transmitted on a DMRS port of a demodulation reference signal associated with the PTRS.
- the target uplink signal and the reference uplink signal satisfy a specific relationship on at least one of a frequency domain transmission resource, a time domain transmission resource, a transmission port, and a transmission beam.
- the target uplink signal and the reference uplink signal are transmitted on the same carrier or adjacent carriers.
- the target uplink signal and the reference uplink signal may not be signals in the same system (network), for example, the target uplink signal is an uplink signal of the new wireless NR system, and the reference uplink signal is Long Term Evolution (LTE).
- LTE Long Term Evolution
- the uplink signal of the system For example, if the uplink signal of the NR system and the uplink signal of the LTE system operate on the same carrier, similar transmission power can be used for transmission.
- the target uplink signal and the reference uplink signal are transmitted through the same port.
- the target uplink signal and the reference uplink signal are transmitted through the same beam.
- the target uplink signal is an SRS
- the reference uplink signal is a PUSCH or PUCCH that is sent last time before the SRS is sent.
- the terminal device determines the transmit power of the target uplink signal according to the transmit power of the reference uplink signal.
- the terminal device determines the transmit power of the uplink signal of the reference signal as the transmit power of the target uplink signal.
- the terminal device obtains the transmit power of the target uplink signal based on the transmit power of the reference uplink signal and the offset value.
- the offset value may be notified to the terminal device by the network device by using high layer signaling or DCI signaling, and may have different offset values for different target uplink signals (in this case, different target uplink signals are corresponding to each other).
- the reference uplink signal can be the same, of course, it can be different).
- the terminal device transmits the target uplink signal using the determined transmit power.
- the terminal device may determine the transmit power of the target uplink signal according to the transmit power of the reference uplink signal, and may implement the transmit power of the reference uplink signal, and may determine the transmit of the other signal as needed.
- the power is then configured with power control parameters of another uplink signal, and the communication performance can be improved.
- FIG. 3 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 3, the terminal device 300 includes a processing unit 310 and a communication unit 320.
- the processing unit 310 is configured to: determine a reference uplink signal of the target uplink signal; determine, according to the transmit power of the reference uplink signal, a transmit power of the target uplink signal;
- the communication unit 320 is configured to: send the target uplink signal by using the transmit power determined by the processing unit.
- the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a physical random access channel PRACH, a phase tracking reference signal PTRS, or a sounding reference signal SRS.
- the reference uplink signal is a PUSCH, a PUCCH, a PRACH, a PTRS, or an SRS.
- the target uplink signal and the reference uplink signal are the same type of uplink signal.
- the target uplink signal is an SRS transmitted on the first SRS resource
- the reference uplink signal is an SRS transmitted on the second SRS resource associated with the first SRS resource.
- the first SRS resource and the second SRS resource belong to the same SRS resource group.
- the second SRS resource is an SRS resource configured by the network device for the first SRS resource in the SRS resource group;
- the second SRS resource is a preset SRS resource in the SRS resource group.
- the same SRS resource group is used for uplink beam management.
- the second SRS resource indicates that the network device indicates the SRI by using the SRS resource.
- the target uplink signal is a PUSCH
- the processing unit 310 is further configured to:
- the reference uplink signal is determined based on scheduling downlink control information DCI of the PUSCH.
- the target uplink signal is a PTRS
- the reference uplink signal is a PUSCH or a DMRS transmitted on a DMRS port of the demodulation reference signal associated with the PTRS.
- the target uplink signal and the reference uplink signal satisfy a specific relationship on at least one of a frequency domain transmission resource, a time domain transmission resource, a transmission port, and a transmission beam.
- the target uplink signal and the reference uplink signal are sent on the same carrier or adjacent carriers.
- the target uplink signal and the reference uplink signal are sent through the same port.
- the target uplink signal and the reference uplink signal are sent by using the same beam.
- the target uplink signal is an SRS
- the reference uplink signal is a PUSCH or a PUCCH that is sent last time before the SRS is sent.
- the target uplink signal is an uplink signal of the new wireless NR system
- the reference uplink signal is an uplink signal of the Long Term Evolution (LTE) system.
- LTE Long Term Evolution
- processing unit 310 is further configured to:
- the transmit power of the uplink signal of the reference signal is determined as the transmit power of the target uplink signal.
- processing unit 310 is further configured to:
- the transmission power of the target uplink signal is obtained based on the transmission power of the reference uplink signal and the offset value.
- terminal device 300 may correspond to the terminal device in the method 200, and the corresponding operations of the terminal device in the method 200 may be implemented. For brevity, no further details are provided herein.
- FIG. 4 is a schematic structural diagram of a system chip 400 according to an embodiment of the present application.
- the system chip 400 of FIG. 4 includes an input interface 401, an output interface 402, the processor 403, and a memory 404 that can be connected by an internal communication connection line.
- the processor 403 is configured to execute code in the memory 404.
- the processor 403 when the code is executed, the processor 403 implements a method performed by the terminal device in the method embodiment. For the sake of brevity, it will not be repeated here.
- FIG. 5 is a schematic block diagram of a communication device 500 in accordance with an embodiment of the present application.
- the communication device 500 includes a processor 510 and a memory 520.
- the memory 520 can store program code, and the processor 510 can execute the program code stored in the memory 520.
- the communication device 500 can include a transceiver 530 that can control the transceiver 530 to communicate externally.
- the processor 510 can call the program code stored in the memory 520 to perform the corresponding operations of the terminal device in the method embodiment.
- the processor 510 can call the program code stored in the memory 520 to perform the corresponding operations of the terminal device in the method embodiment.
- the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
- each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
- the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
- the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
- RAM Random Access Memory
- many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
- SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- ESDRAM Enhanced Synchronous Dynamic Random Access Memory
- Synchronous connection of dynamic random access memory Synchronous connection of dynamic random access memory
- SLDRAM direct memory bus random access memory
- DR RAM direct memory bus random access memory
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including Several instructions are used to make a computer device (which can be a personal computer, a server, Either a network device or the like) performs all or part of the steps of the method described in the various embodiments of the present application.
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Claims (38)
- 一种无线通信方法,其特征在于,包括:终端设备确定目标上行信号的参考上行信号;所述终端设备根据所述参考上行信号的发射功率,确定所述目标上行信号的发射功率;利用确定的所述发射功率,所述终端设备发送所述目标上行信号。
- 根据权利要求1所述的方法,其特征在于,所述目标上行信号为物理上行共享信道PUSCH,物理上行控制信道PUCCH,物理随机接入信道PRACH,相位跟踪参考信号PTRS,或探测参考信号SRS。
- 根据权利要求1或2所述的方法,其特征在于,所述参考上行信号为PUSCH,PUCCH,PRACH,PTRS,或SRS。
- 根据权利要求1至3中任一项所述的方法,其特征在于,所述目标上行信号与所述参考上行信号是相同类型的上行信号。
- 根据权利要求4所述的方法,其特征在于,所述目标上行信号为第一SRS资源上传输的SRS,所述参考上行信号为所述第一SRS资源关联的第二SRS资源上传输的SRS。
- 根据权利要求5所述的方法,其特征在于,所述第一SRS资源和所述第二SRS资源属于同一SRS资源组。
- 根据权利要求6所述的方法,其特征在于,所述第二SRS资源为所述SRS资源组中,网络设备为所述第一SRS资源配置的SRS资源;或者,所述第二SRS资源为所述SRS资源组中,预先设定的一个SRS资源。
- 根据权利要求6或7所述的方法,其特征在于,所述同一SRS资源组用于上行波束管理。
- 根据权利要求5所述的方法,其特征在于,所述第二SRS资源为所述网络设备通过SRS资源指示SRI为所述终端设备配置的与所述第一SRS资源关联的SRS资源。
- 根据权利要求1至4中任一项所述的方法,其特征在于,所述目标上行信号为PUSCH;所述终端设备确定目标上行信号的参考上行信号,包括:所述终端设备基于调度所述PUSCH的下行控制信息DCI,确定所述参考上行信号。
- 根据权利要求1至4中任一项所述的方法,其特征在于,所述目标上行信号为PTRS,所述参考上行信号为所述PTRS关联的解调参考信号DMRS端口上传输的PUSCH或者DMRS。
- 根据权利要求1至4中任一项所述的方法,其特征在于,所述目标上行信号和所述参考上行信号在频域发送资源、时域发送资源、发送端口和发送波束中的至少一种上满足特定关系。
- 根据权利要求12所述的方法,其特征在于,所述目标上行信号和所述参考上行信号在相同的载波或者临近的载波上发送。
- 根据权利要求12所述的方法,其特征在于,所述目标上行信号和所述参考上行信号通过相同的端口发送。
- 根据权利要求12所述的方法,其特征在于,所述目标上行信号和所述参考上行信号通过相同的波束发送。
- 根据权利要求12所述的方法,其特征在于,所述目标上行信号为SRS,所述参考上行信号为发送所述SRS之前最近一次发送的PUSCH或PUCCH。
- 根据权利要求1至16中任一项所述的方法,其特征在于,所述目标上行信号为新无线NR系统的上行信号,所述参考上行信号为长期演进LTE系统的上行信号。
- 根据权利要求1至17中任一项所述的方法,其特征在于,所述终端设备根据所述参考上行信号的发射功率,确定所述目标上行信号的发射功率,包括:所述终端设备将所述参考信号上行信号的发射功率,确定为所述目标上行信号的发射功率。
- 根据权利要求1至17中任一项所述的方法,其特征在于,所述终端设备根据所述参考信号上行信号的发射功率,确定所述目标上行信号的发射功率,包括:所述终端设备基于所述参考上行信号的发送功率,以及偏移值,得到所述目标上行信号的发送功率。
- 一种终端设备,其特征在于,包括处理单元和通信单元;其中所述处理单元用于:确定目标上行信号的参考上行信号;根据所述参考上行信号的发射功率,确定所述目标上行信号的发射功率;所述通信单元用于:利用所述处理单元确定的所述发射功率,发送所述目标上行信号。
- 根据权利要求20所述的终端设备,其特征在于,所述目标上行信号为物理上行共享信道PUSCH,物理上行控制信道PUCCH,物理随机接入信道PRACH,相位跟踪参考信号PTRS,或探测参考信号SRS。
- 根据权利要求20或21所述的终端设备,其特征在于,所述参考上行信号为PUSCH,PUCCH,PRACH,PTRS,或SRS。
- 根据权利要求20至22中任一项所述的终端设备,其特征在于,所述目标上行信号与所述参考上行信号是相同类型的上行信号。
- 根据权利要求23所述的终端设备,其特征在于,所述目标上行信号为第一SRS资源上传输的SRS,所述参考上行信号为所述第一SRS资源关联的第二SRS资源上传输的SRS。
- 根据权利要求24所述的终端设备,其特征在于,所述第一SRS资源和所述第二SRS资源属于同一SRS资源组。
- 根据权利要求25所述的终端设备,其特征在于,所述第二SRS资源为所述SRS资源组中,网络设备为所述第一SRS资源配置的SRS资源;或者,所述第二SRS资源为所述SRS资源组中,预先设定的一个SRS资源。
- 根据权利要求25或26所述的终端设备,其特征在于,所述同一SRS资源组用于上行波束管理。
- 根据权利要求24所述的终端设备,其特征在于,所述第二SRS资源为所述网络设备通过SRS资源指示SRI为所述终端设备配置的与所述第一SRS资源关联的SRS资源。
- 根据权利要求20至23中任一项所述的终端设备,其特征在于,所述目标上行信号为PUSCH;所述处理单元进一步用于:基于调度所述PUSCH的下行控制信息DCI,确定所述参考上行信号。
- 根据权利要求20至23中任一项所述的终端设备,其特征在于,所述目标上行信号为PTRS,所述参考上行信号为所述PTRS关联的解调参考信号DMRS端口上传输的PUSCH或者DMRS。
- 根据权利要求20至23中任一项所述的终端设备,其特征在于,所 述目标上行信号和所述参考上行信号在频域发送资源、时域发送资源、发送端口和发送波束中的至少一种上满足特定关系。
- 根据权利要求31所述的终端设备,其特征在于,所述目标上行信号和所述参考上行信号在相同的载波或者临近的载波上发送。
- 根据权利要求31所述的终端设备,其特征在于,所述目标上行信号和所述参考上行信号通过相同的端口发送。
- 根据权利要求31所述的终端设备,其特征在于,所述目标上行信号和所述参考上行信号通过相同的波束发送。
- 根据权利要求31所述的终端设备,其特征在于,所述目标上行信号为SRS,所述参考上行信号为发送所述SRS之前最近一次发送的PUSCH或PUCCH。
- 根据权利要求20至35中任一项所述的终端设备,其特征在于,所述目标上行信号为新无线NR系统的上行信号,所述参考上行信号为长期演进LTE系统的上行信号。
- 根据权利要求20至36中任一项所述的终端设备,其特征在于,所述处理单元进一步用于:将所述参考信号上行信号的发射功率,确定为所述目标上行信号的发射功率。
- 根据权利要求20至36中任一项所述的终端设备,其特征在于,所述处理单元进一步用于:基于所述参考上行信号的发送功率,以及偏移值,得到所述目标上行信号的发送功率。
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Publication number | Priority date | Publication date | Assignee | Title |
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BR112019026688A2 (pt) * | 2017-08-04 | 2020-06-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Método de comunicação sem fio e dispositivo terminal |
CN110034904B (zh) * | 2018-01-11 | 2022-01-04 | 维沃移动通信有限公司 | 相位跟踪参考信号关联指示及发送方法、网络设备和终端 |
CN111865388B (zh) * | 2019-04-30 | 2022-04-05 | 华为技术有限公司 | 一种上行波束管理方法及装置 |
JP7498676B2 (ja) * | 2021-02-04 | 2024-06-12 | ソフトバンク株式会社 | システム、情報提供装置、プログラム、及び情報提供方法 |
WO2024035162A1 (ko) * | 2022-08-11 | 2024-02-15 | 엘지전자 주식회사 | 무선 통신 시스템에서 ptrs의 송수신을 위한 방법 및 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101174858A (zh) * | 2006-11-02 | 2008-05-07 | 鼎桥通信技术有限公司 | 功率控制方法及功率控制装置 |
CN102835033A (zh) * | 2010-04-30 | 2012-12-19 | 松下电器产业株式会社 | 无线通信装置及发送功率控制方法 |
CN103379605A (zh) * | 2012-04-26 | 2013-10-30 | 电信科学技术研究院 | 一种上行功率控制方法、装置及系统 |
US20160192356A1 (en) * | 2013-08-17 | 2016-06-30 | Lg Electronics Inc. | Transmission power control method for sounding reference signal in wireless communication system and apparatus therefor |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010005239A2 (ko) * | 2008-07-08 | 2010-01-14 | 엘지전자주식회사 | 무선 통신 시스템에서 상향링크 전송 전력 제어 방법 |
WO2012008786A2 (ko) * | 2010-07-14 | 2012-01-19 | 엘지전자 주식회사 | 무선통신 시스템에서 네트워크 진입 후 초기 데이터 전송을 위한 상향링크 전송 전력을 제어하는 단말 장치 및 그 방법 |
WO2012064100A2 (ko) * | 2010-11-09 | 2012-05-18 | 엘지전자 주식회사 | 무선통신 시스템에서 전력상태보고를 전송하기 위한 방법 및 이를 위한 단말 장치 |
WO2012173968A1 (en) * | 2011-06-13 | 2012-12-20 | Interdigital Patent Holdings, Inc. | Method for controlling transmit power of a mobile station |
CN102355717B (zh) * | 2011-06-23 | 2018-07-24 | 中兴通讯股份有限公司 | 一种发送多个上行信号的方法和移动终端 |
EP3416433B1 (en) * | 2011-07-13 | 2021-07-28 | Sun Patent Trust | Terminal apparatus, base station apparatus, transmission method and reception method |
KR102130417B1 (ko) * | 2011-09-30 | 2020-07-08 | 인터디지탈 패튼 홀딩스, 인크 | 무선 통신의 다중점 송신 |
US9407405B2 (en) * | 2012-04-06 | 2016-08-02 | Lg Electronics Inc. | Method of receiving downlink data and wireless device using the method |
KR20140009902A (ko) * | 2012-07-12 | 2014-01-23 | 주식회사 케이티 | 상향링크 사운딩 참조신호 전송전력 제어방법 및 그 단말, 송수신포인트 |
KR101619400B1 (ko) * | 2012-08-16 | 2016-05-11 | 주식회사 케이티 | 상향링크 제어 채널 및 사운딩 참조신호의 전송 제어 방법 및 장치 |
US8861443B2 (en) * | 2012-09-20 | 2014-10-14 | Intel Corporation | Method and apparatus for power control in full-duplex wireless systems with simultaneous transmission reception |
CN103945504B (zh) * | 2013-01-18 | 2017-10-17 | 华为技术有限公司 | 功率控制方法及设备 |
US9642140B2 (en) * | 2013-06-18 | 2017-05-02 | Samsung Electronics Co., Ltd. | Methods of UL TDM for inter-enodeb carrier aggregation |
US10327212B2 (en) * | 2014-05-06 | 2019-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Uplink power control in heterogeneous networks |
CN107005950B (zh) * | 2014-12-01 | 2020-10-27 | 瑞典爱立信有限公司 | 用于管理无线设备的发射功率的方法和网络节点 |
WO2016088719A1 (ja) * | 2014-12-05 | 2016-06-09 | 株式会社Nttドコモ | 上りリンク干渉低減方法、及び基地局 |
US9980236B2 (en) * | 2016-01-29 | 2018-05-22 | Ofinno Technologies, Llc | Wireless device transmission power management |
JP2018023040A (ja) * | 2016-08-04 | 2018-02-08 | 富士通株式会社 | 基地局、無線通信システムおよび基地局の動作方法 |
US10404511B2 (en) * | 2016-11-23 | 2019-09-03 | Qualcomm Incorporated | Space-time block coding schemes for DFT-s-OFDM |
WO2018107358A1 (zh) * | 2016-12-13 | 2018-06-21 | 广东欧珀移动通信有限公司 | 控制上行功率的方法和设备 |
EP3480966B1 (en) * | 2017-01-08 | 2021-05-05 | LG Electronics Inc. | Uplink transmission/reception method in wireless communication system, and device therefor |
US10448423B2 (en) * | 2017-03-22 | 2019-10-15 | Ofinno, Llc | Data multiplexing in a wireless device and wireless network |
WO2018203592A1 (ko) * | 2017-05-04 | 2018-11-08 | 엘지전자(주) | 무선 통신 시스템에서 참조 신호를 송수신하기 위한 방법 및 이를 위한 장치 |
WO2018204756A1 (en) * | 2017-05-04 | 2018-11-08 | Intel IP Corporation | System and method for phase noise compensation |
WO2018225927A1 (ko) * | 2017-06-09 | 2018-12-13 | 엘지전자(주) | 무선 통신 시스템에서 참조 신호를 송수신하기 위한 방법 및 이를 위한 장치 |
SG11201911140VA (en) * | 2017-06-29 | 2020-01-30 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Method, terminal device and network device for transmitting signals |
JP7313282B2 (ja) * | 2017-08-04 | 2023-07-24 | 株式会社Nttドコモ | 端末、無線通信方法、基地局及びシステム |
BR112019026688A2 (pt) * | 2017-08-04 | 2020-06-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Método de comunicação sem fio e dispositivo terminal |
WO2019027151A1 (ko) * | 2017-08-04 | 2019-02-07 | 엘지전자 주식회사 | 무선 통신 시스템에서 참조 신호를 송수신하기 위한 방법 및 이를 위하 장치 |
-
2017
- 2017-08-04 BR BR112019026688-7A patent/BR112019026688A2/pt not_active IP Right Cessation
- 2017-08-04 WO PCT/CN2017/096072 patent/WO2019024101A1/zh unknown
- 2017-08-04 RU RU2019139248A patent/RU2741628C1/ru active
- 2017-08-04 SG SG11201910738PA patent/SG11201910738PA/en unknown
- 2017-08-04 CN CN201780093598.5A patent/CN111133804A/zh active Pending
- 2017-08-04 AU AU2017426219A patent/AU2017426219A1/en not_active Withdrawn
- 2017-08-04 EP EP17919797.5A patent/EP3614748B1/en active Active
- 2017-08-04 US US16/621,230 patent/US10945215B2/en active Active
- 2017-08-04 CN CN202010815396.0A patent/CN111935809B/zh active Active
- 2017-08-04 MX MX2019015051A patent/MX2019015051A/es unknown
- 2017-08-04 CA CA3063783A patent/CA3063783A1/en not_active Abandoned
-
2020
- 2020-02-26 ZA ZA2020/01207A patent/ZA202001207B/en unknown
-
2021
- 2021-01-29 US US17/163,055 patent/US11490336B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101174858A (zh) * | 2006-11-02 | 2008-05-07 | 鼎桥通信技术有限公司 | 功率控制方法及功率控制装置 |
CN102835033A (zh) * | 2010-04-30 | 2012-12-19 | 松下电器产业株式会社 | 无线通信装置及发送功率控制方法 |
CN103379605A (zh) * | 2012-04-26 | 2013-10-30 | 电信科学技术研究院 | 一种上行功率控制方法、装置及系统 |
US20160192356A1 (en) * | 2013-08-17 | 2016-06-30 | Lg Electronics Inc. | Transmission power control method for sounding reference signal in wireless communication system and apparatus therefor |
Non-Patent Citations (2)
Title |
---|
ERICSSON: "On reference signals for UL power control", 3GPP TSG-RAN WG1 MEETING #89 R1-1708714, no. R1-1708714, 6 May 2017 (2017-05-06), Hangzhou, China, XP051262611 * |
See also references of EP3614748A4 * |
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CN111935809B (zh) | 2023-05-23 |
CA3063783A1 (en) | 2019-02-07 |
CN111133804A (zh) | 2020-05-08 |
SG11201910738PA (en) | 2020-02-27 |
CN111935809A (zh) | 2020-11-13 |
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