WO2014056148A1 - 物理上行控制信道功控方法、设备及系统 - Google Patents

物理上行控制信道功控方法、设备及系统 Download PDF

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Publication number
WO2014056148A1
WO2014056148A1 PCT/CN2012/082637 CN2012082637W WO2014056148A1 WO 2014056148 A1 WO2014056148 A1 WO 2014056148A1 CN 2012082637 W CN2012082637 W CN 2012082637W WO 2014056148 A1 WO2014056148 A1 WO 2014056148A1
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WO
WIPO (PCT)
Prior art keywords
dcix
power control
pucch
tpc command
pucch power
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PCT/CN2012/082637
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English (en)
French (fr)
Inventor
汪成溢
汪喆
何明均
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/082637 priority Critical patent/WO2014056148A1/zh
Priority to CN201280002690.3A priority patent/CN103891367B/zh
Publication of WO2014056148A1 publication Critical patent/WO2014056148A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters

Definitions

  • the present invention relates to communications technologies, and in particular, to a physical uplink control channel power control method, device, and system, and belongs to the technical field of communications. Background technique
  • the 3rd Generation Partnership Project (3GPP) mobile communication system based on Wideband Code Division Multiple Access (WCDMA) wireless access technology is widely deployed throughout the world, long term evolution (Long Term The Evolution, LTE project is a 3G evolution that improves and enhances 3G's air access technology, using Orthogonal Frequency Division Multiplexing (OFDM) and Multi-Input Multi-Output (Multi-Input Multi-Output, MIMO) is the standard for its wireless network evolution.
  • OFDM Orthogonal Frequency Division Multiplexing
  • MIMO Multi-Input Multi-Output
  • user equipment connects to a base station through a wireless channel and exchanges data.
  • the base station cannot receive the transmission signal of the user equipment. If the power is too large, it may cause interference to the transmission signals of other user equipments. Since multiple user equipments connected to the same base station may be distributed at different locations from the base station, in order to enable the far-point, mid-point, and near-point terminals to obtain the best possible uplink channel quality, it is necessary to do the transmission power of the terminal. Differentiated adjustment, this adjustment is the uplink power control (referred to as power control).
  • the power control of the Physical Uplink Control Channel (PUCCH) in the current protocol is defined as follows:
  • PUCCH ( ⁇ I ⁇ CMAX, ⁇ O PUCCH + PL + ⁇ i ⁇ CQI, n HARQ ) + ⁇ F PUCCH ( ⁇ ) + where P PUCCH (0 is the time, the PUCCH transmit power of the user equipment; P CMAX is the terminal The maximum transmit power; PUCCH is the power control parameter of the high-level configuration.
  • This parameter usually does not change during a long period of time; for the path loss value of the downlink signal, if the UE position does not change, this value is usually basically constant;
  • the protocol pre-defined value is calculated according to the fixed formula to obtain "c e / , 3 ⁇ 4 « e ) to correct the transmit power of different PUCCH formats;
  • - PUCCH (F) is the power control parameter of the higher PUCCH format configured for the upper layer, for a certain format For PUCCH, this parameter usually does not change for a long period of time;
  • g(0 is the accumulated value of PUCCH power control. In these parameters In the middle, g (0 is a variable, and the rest are fixed parameters.
  • the user equipment carries a DCI format other than the Downlink Control Information (DCI) format 0 (called DCI 0) delivered by the base station (
  • DCI 0 Downlink Control Information
  • TPC Transmit Power Control
  • DCIx accumulates for g(0) and, when performing PUCCH transmission, determines the PUCCH transmission power based on the latest g (0).
  • the inventor of the present invention finds in practice that: since the user equipment receives DCI by blind detection of a Physical Downlink Control Channel (PDCCH), there is a certain probability that a false DCI is detected from the noise signal ( That is, the virtual check DCI), when the PUCCH power control integrated value is updated according to the TPC command carried by the virtual check DCIx, an error is introduced to the accumulated value of the PUCCH power control, resulting in inaccurate PUCCH power control.
  • PDCCH Physical Downlink Control Channel
  • the embodiments of the present invention provide a physical uplink control channel power control method, device, and system, so as to improve the accuracy and effectiveness of the physical uplink control channel power control.
  • a PUCCH power control method including:
  • the DCIx carrying a transmission power control TPC command; determining whether the DCIx is a virtual check DCIx;
  • the DCIx is a false check DCIx, discard the TPC command carried by the DCIx; if the DCIx is not a dummy check DCIx, perform a PUCCH power control command according to the TPC command.
  • PUCCH power adjustment including:
  • the determining whether the DCIx is a virtual check DCIx includes:
  • the DCI0 is received, it is determined that the DCIx is a false check DCIx; if the DCI0 is not received, it is determined that the DCIx is not a false check DCIx.
  • the method further includes: The length of time in which the accumulated PUCCH power control integrated value is not accumulated is cleared.
  • the method further includes:
  • another PUCCH power control method including:
  • the TPC command carried by the DCIx is modified to not adjust the PUCCH power, and the modified DCIx is sent; if the DCI0 to be sent does not exist, the DCIx is directly sent.
  • a user equipment including a DCIx acquisition module, a virtual check determination module, and a power control module, where:
  • the DCIx acquisition module is configured to receive DCIx in a current subframe, and trigger the virtual detection determination module to perform an operation, where the DCIx carries a transmission power control TPC command;
  • the virtual check judging module is configured to determine whether the DCIx is a virtual check DCIx, and provide a judgment result to the power control module;
  • the power control module is configured to: if the DCIx is a virtual check DCIx, discard the TPC command carried by the DCIx; if the DCIx is not a virtual check DCIx, perform PUCCH power control according to the TPC command.
  • the power control module is specifically configured to: if the DCIx is not a virtual check DCIx, accumulate an adjustment step corresponding to the TPC command to an accumulated value of a PUCCH power control .
  • the virtual detection determining module is specifically configured to: detect whether a downlink control is still received in the current subframe Information format 0 DCI0; if the DCI0 is received, it is determined that the DCIx is a dummy check DCIx; if the DCI0 is not received, it is determined that the DCIx is not a false check DCIx.
  • the power control module is further configured to: add the adjustment step corresponding to the TPC command to the After the PUCCH power control integrated value, the duration in which the PUCCH power control integrated value is not accumulated is cleared.
  • the method further includes:
  • a duration determining module configured to determine, after the power control module discards the TPC command carried by the DCIx, whether the accumulated time of the accumulated PUCCH power control value is not reached, and if the preset threshold is reached, Triggering the power control module to perform a clearing process
  • the power control module is further configured to: in response to the triggering, clear the PUCCH power control accumulated value.
  • a network device including a sending determining module, a modifying module, and a sending module, where:
  • the sending determining module is configured to determine, if there is a DCIx to be sent in the current subframe, whether there is a DCI0 to be sent in the current subframe;
  • the modifying module is configured to: if the sending determining module determines that the DCI0 to be sent exists, modify the TPC command carried by the DCIx to not adjust PUCCH power; and the sending module is configured to send the modified DCIx, or if the sending determination module determines that the DCI0 to be transmitted does not exist, directly transmitting the DCIx.
  • a PUCCH power control system including the network device in the embodiment of the present invention, and the user equipment in the embodiment of the present invention, where the network device is connected to the user equipment.
  • the user equipment after the user equipment receives the DCIx, it determines whether the received DCIx is a virtual check DCIx, and is only carried according to the non-false check DCIx.
  • the TPC command is used to update the PUCCH power control integrated value and perform PUCCH power control, so as to implement the PUCCH transmission power adjustment of the user equipment according to the PUCCH power adjustment range indicated by the base station, and improve the accuracy and effectiveness of the physical uplink control channel power control.
  • FIG. 1 is a schematic flowchart of a PUCCH power control method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a PUCCH power control method according to another embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a PUCCH power control method according to another embodiment of the present invention
  • FIG. 4 is a PUCCH power control method according to another embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 10 is a PUCCH power control system in accordance with one embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the PUCCH power control method of the present invention is described in detail from the perspective of user equipment (UE).
  • UE user equipment
  • FIG. 1 is a schematic flow chart of a PUCCH power control method according to an embodiment of the present invention. As shown in FIG. 1, the PUCCH power control method includes the following steps:
  • the UE obtains DCIx, for example, by blindly detecting the PDCCH channel, and the DCIx may be DCI 1A, DCI IB, DCI ID, DCI 1 , DCI 2A, DCI 2, and the like.
  • the DCIx contains a TPC command field, which can have a value of 0, 1, 2, or 3, and so on.
  • the UE may determine, in any manner preset, the method received in step 101. Whether the DCIx is a virtual check DCIx, for example, the UE determines whether a PUCCH transmission or the like is performed within a preset time period before the current subframe. In this embodiment, the specific manner of determining whether DCIx is a virtual check DCI is not limited.
  • DCIx is a virtual check DCIx, discard the TPC command carried by the DCIx. If the DCIx is not a virtual check DCIx, perform PUCCH power control according to the TPC command.
  • step 102 if it is determined in step 102 that the learned DCIx is a virtual check DCIx, the DCIx is discarded, and the PUCCH power control is not performed according to the TPC command carried by the DCIx; if it is determined in step 102 that the DCIx is not the virtual check DCIx, the The DCIx performs parsing, extracts the TPC command in the DCIx, and determines the adjustment step size corresponding to the extracted TPC command according to the mapping relationship between the known TPC command and the adjustment step. More specifically, Table 1 shows the mapping relationship between the TPC command and the adjustment step size specified in the current protocol.
  • the user equipment after the user equipment receives the DCIx, it determines whether the received DCIx is a virtual check DCIx, and updates the PUCCH power control cumulative value only according to the TPC command carried by the non-false check DCIx.
  • the PUCCH power control is performed to implement the PUCCH transmission power adjustment of the user equipment according to the PUCCH power adjustment range indicated by the base station, thereby improving the accuracy and effectiveness of the physical uplink control channel power control.
  • the UE does not perform PUCCH transmission for a period of time. Due to the long time, there is usually a certain DCI virtual check, for example, a virtual check to 8 DCIx. Assuming that the values of the four TPC commands shown in Table 1 are the same, the sequence formed by the adjustment step corresponding to the eight TPC commands is: ⁇ 3 , -1 , 0 , 1 , 1 , 3 , 0, -1 ⁇ .
  • the base station After the base station receives the PUCCH transmission signal of the UE, for example, a Channel Quality Indicator (CQI) request, an Scheduling Request Indication (SRI), or an Acknowledge (ACK), the base station can pass the following.
  • CQI Channel Quality Indicator
  • SRI Scheduling Request Indication
  • ACK Acknowledge
  • the DCIx of the UE is reduced in the PUCCH transmission power of the UE, but the PUCCH transmission power of the UE is too large, causing interference to the PUCCH signals of other UEs, thereby causing uplink CQI/SRI/ of other UEs.
  • the ACK feedback is inaccurate, resulting in a sudden change in traffic or abnormal user retreat.
  • the PUCCH power control method includes the following steps:
  • the UE receives the DCIx carrying the TPC command in the current subframe.
  • the UE determines whether the current subframe receives the downlink control information format 0 (DCI0); if not, proceeds to step 203; if received, proceeds to step 204;
  • DCI0 downlink control information format 0
  • the physical uplink shared channel (PUSCH) transmission of the UE in the same carrier is used in practical applications.
  • PUCCH transmission usually occurs in mutual exclusion.
  • the scenario in which the UE does not transmit PUCCH for a long time is usually caused by the connected PUSCH transmission. Therefore, the UE determines whether the DCI0 scheduling still exists in the same subframe, that is, whether the UE receives the DCI0 sent by the base station to instruct the UE to demodulate the corresponding service data message on the subsequent PUSCH. If DCI0 is received, it may be determined that the received DCIx is a dummy check DCIx, thereby effectively reducing the impact of the virtual check DCI on the PUCCH transmit power of the UE.
  • the DCI0 to be sent does not exist, send the DCIx; if the DCI0 to be sent exists, the TPC in the DCIx is forcibly set to not adjust the PUCCH transmission power, that is, 1 and then send the DCIx . After waiting for the next PUCCH power control requirement, for example, the PUCCH signal sent by the UE is received again, and a new DCIx carrying a valid TPC is generated.
  • the UE By transmitting the DCIx by the base station in the above manner, the UE adopts the above embodiment.
  • the DCIx sent by the base station is not misjudged as the virtual check DCIx, which further improves the validity and accuracy of the PUCCH power control.
  • the PUCCH power control method further includes the following steps: determining whether the accumulated time of the PUCCH power control integrated value is not accumulated, and whether the preset threshold is reached;
  • FIG. 3 is a schematic flow chart of a PUCCH power control method according to another embodiment of the present invention. As shown in FIG. 3, the PUCCH power control method includes the following steps:
  • the UE receives the DCIx carrying the TPC command in the current subframe.
  • the UE determines whether the current subframe receives the downlink control information format 0 (DCI0); if not, proceeds to step 303; if received, proceeds to step 305;
  • DCI0 downlink control information format 0
  • the UE records the duration in which the PUCCH power control integrated value is not accumulated, for example, by setting a timer.
  • the timer has an initial value of 0.
  • the timer is started when the UE accesses the network, and the UE clears the timer every time the PUCCH power control accumulated value is accumulated, so that the duration of the timer is used.
  • the PUCCH power control integrated value is not accumulated for a long time in the recording.
  • step 306 it is determined whether the accumulated time of the cumulative value of the PUCCH power control is not reached the preset threshold; if not, the process ends; if yes, step 307;
  • the UE stores a preset threshold, which may be directly configured in the UE, or may be sent by the base station to the UE, which is not limited in the embodiment of the present invention.
  • the preset threshold can be set to any length as needed, for example, 30 seconds.
  • the UE determines, according to the duration recorded by the timer, whether the accumulated time of the cumulative value of the PUCCH power control is not greater than or equal to the preset threshold, and if not, ends the process;
  • step 306 if it is determined in step 306 that the accumulated time of the PUCCH power control integrated value is not greater than or equal to the preset threshold, the PUCCH power control integrated value is cleared, that is, the PUCCH transmission power of the UE is restored to the UE. The default power when entering the network.
  • the foregoing process shown in FIG. 3 is only used as an example of determining whether the PUCCH power control integrated value needs to be cleared by the UE based on the first or second embodiment.
  • the UE may further be configured with a period timer.
  • the UE determines whether the accumulated time of the PUCCH power control accumulated value is not up to a preset threshold. If yes, the PUCCH power control integrated value is cleared and the cycle timer is restarted; if not, the PUCCH power control integrated value is not processed, and the cycle timer is restarted.
  • the duration of the period timer can be arbitrarily set according to requirements.
  • the PUCCH power control method of the above embodiment since the PUCCH power control is not determined Whether the accumulated value is accumulated, whether the preset threshold is reached, and when it is reached,
  • the PUCCH power control accumulated value is cleared to further avoid the PUCCH transmission power being too high due to the UE not performing PUCCH transmission for a long time.
  • FIG. 4 is a schematic flow chart of a PUCCH power control method according to another embodiment of the present invention. As shown in FIG. 4, the PUCCH power control method includes the following steps:
  • the DCI0 to be sent If the DCI0 to be sent is present, modify the TPC command carried by the DCIx to not adjust the PUCCH transmission power (for example, set to 1), and send the modified DCIx; if the DCI0 to be sent does not exist , the DCIx is sent directly.
  • modify the TPC command carried by the DCIx to not adjust the PUCCH transmission power (for example, set to 1), and send the modified DCIx; if the DCI0 to be sent does not exist , the DCIx is sent directly.
  • the base station when the base station performs the PUCCH power control on the UE by sending the DCIx, it is determined whether the DCI0 is sent in the same subframe, and if yes, the frame is not sent in the subframe and is used to indicate the pair.
  • the PUCCH transmits the DCI of the TPC command whose power is adjusted, so that the UE determines whether the received DCI is the virtual check DCI by determining whether the received DCI is received in the same subframe, and does not miss the DCI that carries the valid TPC command sent by the base station. Therefore, the PUCCH transmission power adjustment of the user equipment is performed according to the PUCCH power adjustment range indicated by the base station, and the accuracy and effectiveness of the physical uplink control channel power control are improved.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment includes a DCIx acquisition module 51, a virtual detection determination module 52, and a power control module 53, wherein: the DCIx acquisition module 51 is configured to receive DCIx in a current subframe, and trigger the virtual inspection.
  • the judgment module 52 performs an operation, the DCIx carries a transmission power control TPC command;
  • the virtual check determination module 52 is configured to determine whether the DCIx is a virtual test DCIx, and provide a judgment result to the power control module 53;
  • the power control module 53 is configured to discard the TPC command carried by the DCIx if the DCIx is a virtual check DCIx, and perform PUCCH power control according to the TPC command if the DCIx is not a virtual check DCIx.
  • the flow of performing the PUCCH power control by the user equipment in this embodiment is the same as the foregoing Embodiments 1 to 3
  • the PUCCH power control method is the same, so it will not be described here.
  • the user equipment after receiving the DCIx, determines whether the received DCIx is a virtual check DCIx, and updates the PUCCH power control cumulative value according to the TPC command carried by the non-false check DCIx, and performs PUCCH power. Controlling, so as to implement the PUCCH transmission power adjustment of the user equipment according to the PUCCH power adjustment range indicated by the base station, and improving the accuracy and effectiveness of the physical uplink control channel power control.
  • the power control module is specifically configured to: if the DCIx is not the virtual check DCIx, accumulate the adjustment step corresponding to the TPC command to the PUCCH power control integrated value.
  • the virtual check determining module is specifically configured to: detect whether the current subframe receives the DCIx, and further receives the downlink control information format 0 DCI0; The DCI0 is determined to be the virtual check DCIx; if the DCI0 is not received, it is determined that the DCIx is not the virtual check DCIx.
  • the power control module is further configured to: after the adjustment step corresponding to the TPC command is accumulated to a PUCCH power control integrated value, the PUCCH power control is not accumulated. The value is incremented by the accumulated duration.
  • FIG. 6 is a schematic structural diagram of a user equipment according to another embodiment of the present invention. As shown in FIG. 6, in the user equipment of the foregoing embodiment, the method further includes:
  • the duration judging module 54 is configured to determine, after the power control module 53 discards the TPC command carried by the DCIx, whether the duration of the cumulative value of the PUCCH power control is not accumulated, and whether the preset threshold is reached. If yes, the power control module 53 is triggered to perform a clearing process. Accordingly, the power control module 53 is further configured to: in response to the triggering, clear the PUCCH power control integrated value.
  • FIG. 7 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • the user equipment includes a receiver 71, a transmitter 72, and a memory 73, and a processor 74 coupled to the receiver 71, the transmitter 72, and the memory 73, respectively.
  • the user equipment may also include other components such as an antenna, which is not limited in the embodiment of the present invention.
  • a set of program codes is stored in the memory 73, and the processor 74 is used to call the memory 73.
  • the DCIx is a virtual check DCIx, discard the TPC command carried by the DCIx; if the DCIx is not a virtual check DCIx, perform PUCCH power control according to the TPC command.
  • the process of the PUCCH power control performed by the user equipment in this embodiment is the same as the PUCCH power control method in the first to third embodiments, and therefore is not described herein again.
  • the user equipment after receiving the DCIx, determines whether the received DCIx is a virtual check DCIx, and updates the PUCCH power control cumulative value according to the TPC command carried by the non-false check DCIx, and performs PUCCH power. Controlling, so as to implement the PUCCH transmission power adjustment of the user equipment according to the PUCCH power adjustment range indicated by the base station, and improving the accuracy and effectiveness of the physical uplink control channel power control.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in FIG. 8, the network device includes a transmission judging module 81, a modification module 82, and a sending module 83, where:
  • the sending determining module 81 is configured to determine, if there is a DCIx to be sent in the current subframe, whether the current subframe has a DCI0 to be sent;
  • the modifying module 82 is configured to: if the sending determining module 81 determines that the DCI0 to be sent exists, modify the TPC command carried by the DCIx to not adjust PUCCH power; and the sending module 83 is configured to: Sending the modified DCIx, or if the sending determining module 81 determines that the DCI0 to be sent does not exist, directly transmitting the DCIx.
  • the network device in this embodiment is, for example, a base station, and the process of performing PUCCH power control is the same as the PUCCH power control method in the fourth embodiment, and therefore is not described herein again.
  • the PUCCH power control when the PUCCH power control is performed on the UE by sending the DCIx, it is determined whether the DCI0 is sent in the same sub-frame, and if yes, the non-delivery in the sub-frame carries the power for indicating the transmission to the PUCCH.
  • the DCI of the TPC command is adjusted, so that the UE determines whether the received DCI is a virtual check DCI by determining whether the DCI is received in the same subframe, and does not miss the DCI that is sent by the network device and carries the valid TPC command.
  • Implementing a PUCCH of the user equipment according to the PUCCH power adjustment range indicated by the network device Transmit power adjustment improves the accuracy and effectiveness of physical uplink control channel power control.
  • FIG. 9 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • the network device includes a transmitter 91, a receiver 92, a memory 93, and a processor 94 coupled to the transmitter 91, the receiver 92, and the memory 93, respectively.
  • the base station may also include a common component such as an antenna, a baseband processing component, a medium-frequency processing component, and an input/output device.
  • the embodiment of the present invention does not impose any limitation here.
  • the memory 93 stores a set of program codes, and the processor 94 is configured to call the program code stored in the memory 93 for performing the following operations:
  • the TPC command carried by the DCIx is modified to not adjust the PUCCH power, and the modified DCIx is sent by the transmitter 91; if the DCI0 to be sent does not exist, The transmitter 91 directly transmits the DCIx.
  • the network device in this embodiment is, for example, a base station, and the process of performing PUCCH power control is the same as the PUCCH power control method in the fourth embodiment, and therefore is not described herein again.
  • the PUCCH power control when the PUCCH power control is performed on the UE by sending the DCIx, it is determined whether the DCI0 is sent in the same sub-frame, and if yes, the non-delivery in the sub-frame carries the power for indicating the transmission to the PUCCH.
  • the DCI of the TPC command is adjusted, so that the UE determines whether the received DCI is a virtual check DCI by determining whether the DCI is received in the same subframe, and does not miss the DCI that is sent by the network device and carries the valid TPC command.
  • the PUCCH transmission power adjustment of the user equipment is performed according to the PUCCH power adjustment range indicated by the network device, and the accuracy and effectiveness of the physical uplink control channel power control are improved.
  • FIG. 10 is a PUCCH power control system according to an embodiment of the present invention.
  • the PUCCH power control system includes the network device 10a of the above embodiment, and the user equipment 10b of the above embodiment.
  • the network device 10a is connected to the user equipment 10b.
  • the PUCCH power control system of the embodiment after the user equipment receives the DCIx, Determining whether the received DCIx is a virtual check DCIx, and updating the PUCCH power control integrated value according to the TPC command carried by the non-false check DCIx, and performing PUCCH power control, thereby implementing the PUCCH power adjustment range indicated by the network device.
  • the PUCCH transmission power adjustment of the user equipment improves the accuracy and effectiveness of the physical uplink control channel power control.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the above method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例提供一种物理上行控制信道功控方法、设备及系统。该方法包括:在当前子帧接收DCIx,所述DCIx携带有TPC命令;判断所述DCIx是否为虚检DCIx;若所述DCIx是虚检DCIx,丟弃所述DCIx携带的所述TPC命令;若所述DCIx不是虚检DCIx,根据所述TPC命令进行PUCCH功控。根据本发明实施例提供的物理上行控制信道功控方法、设备及系统,提高了物理上行控制信道功控的准确度和有效性。

Description

物理上行控制信道功控方法、 设备及系统
技术领域 本发明涉及通信技术, 尤其涉及一种物理上行控制信道功控方法、 设备 及系统, 属于通信技术领域。 背景技术
基于宽带码分多址( Wideband Code Division Multiple Access, WCDMA ) 无线接入技术的第三代合作伙伴计划 ( The 3rd Generation Partnership Project, 3 GPP )移动通信系统在全世界广泛部署, 长期演进( Long Term Evolution, LTE )项目是 3G的演进, 它改进并增强了 3G的空中接入技术, 采用正交频 分复用 ( Orthogonal Frequency Division Multiplexing, OFDM )和多输入多输 出 ( Multi-Input Multi-Output, MIMO )作为其无线网络演进的标准。
在 LTE系统中用户设备通过无线信道和基站进行连接, 并交换数据。 在 上行发送过程中, 如果功率过小, 则基站无法接收到用户设备的发送信号, 如果功率过大, 则可能对其它用户设备的发送信号造成干扰。 由于连接在同 一基站的多个用户设备可能分布在距离基站不同的位置上, 为了使远点, 中 点, 近点的终端都能获得尽可能好的上行信道质量, 需要对终端的发射功率 做差异化调整, 这种调整就是上行功率控制 (简称功控) 。
目前协议中对于物理上行控制信道(Physical Uplink Control Channel, PUCCH ) 的功控定义如下:
^ PUCCH ( ― I^ CMAX, ^ O PUCCH + PL + ^i^CQI, nHARQ ) + ^F PUCCH (^ ) + 其中, PPUCCH(0为 时刻, 用户设备的 PUCCH发送功率; PCMAX为终端的 最大发射功率; PUCCH为高层配置的功控参数, 在较长的时间段内这个参数 通常不会变化; 为下行信号的路损值, 如果 UE位置不发生改变, 这个值 通常基本恒定; 为协议预定义值, 按照固定公式计算得到 "ce/ , ¾«e )用来修正不同 PUCCH格式的发射功率; — PUCCH (F)为高层配 置不同 PUCCH格式的功控参数,对于某种格式的 PUCCH而言在较长的时间 段内这个参数通常不会变化; g(0为 PUCCH功率控制累计值。 在这些参数 中, g(0为可变量, 其余均为固定参数。 用户设备根据基站下发的携带在除 下行控制信息 ( Downlink Control Information, DCI )格式 0 (称为 DCI 0 )之 外的其它 DCI格式(统称为 DCIx ) 中的传输功率控制 (Transmit Power Control , TPC )命令, 对 g(0进行累计, 并当进行 PUCCH发送时, 根据最 新的 g ( 0确定 PUCCH发送功率。
本发明的发明人在实践中发现: 由于用户设备对于 DCI的接收是通过盲 检测物理下行控制信道(Physical Downlink Control Channel, PDCCH ) 完成 的, 因此存在一定概率从噪声信号中检到虚假的 DCI (即虚检 DCI ) , 当根 据虚检 DCIx所携带的 TPC命令更新 PUCCH功率控制累计值时,会对 PUCCH 功率控制累计值引入误差, 导致不准确的 PUCCH功率控制。 发明内容
针对现有技术中存在的缺陷, 本发明实施例提供一种物理上行控制信道 功控方法、 设备及系统, 以提高物理上行控制信道功控的准确度和有效性。
第一方面, 提供一种 PUCCH功控方法, 包括:
在当前子帧接收 DCIx, 所述 DCIx携带有传输功率控制 TPC命令; 判断所述 DCIx是否为虚检 DCIx;
若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带的所述 TPC命令; 若 所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控命令。
在第一方面的第一种可能的实现方式中, 所述根据所述 TPC 进行
PUCCH功率调节, 包括:
将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值。 结合第一方面或第一方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 所述判断所述 DCIx是否为虚检 DCIx, 包括:
检测在所述当前子帧是否还接收到下行控制信息格式 0 DCI0;
若接收到所述 DCI0, 判定所述 DCIx是虚检 DCIx; 若未接收到所述 DCI0, 判定所述 DCIx不是虚检 DCIx。
结合第一方面的第一种可能的实现方式, 在第三种可能的实现方式 中, 将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值之 后, 还包括: 将未对所述 PUCCH功率控制累计值进行累加的时长清零。
结合第一方面的第一种可能的实现方式, 在第四种可能的实现方式 中, 丟弃所述 DCIx携带的所述 TPC命令之后, 还包括:
判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否达到预 设门限值;
若达到, 将所述 PUCCH功率控制累计值清零。
第二方面, 提供另一种 PUCCH功控方法, 包括:
若在当前子帧存在待发送的 DCIx, 判断所述当前子帧是否存在待发 送的 DCI0 , 所述 DCIx携带有 TPC命令;
若存在所述待发送的 DCI0, 将所述 DCIx携带的所述 TPC命令修改 为不调节 PUCCH功率, 并发送修改后的 DCIx; 若不存在所述待发送的 DCI0, 直接发送所述 DCIx。
第三方面, 提供一种用户设备, 包括 DCIx获取模块、 虚检判断模块 和功控模块, 其中:
所述 DCIx获取模块, 用于在当前子帧接收 DCIx, 并触发所述虚检判 断模块执行操作, 所述 DCIx携带有传输功率控制 TPC命令;
所述虚检判断模块, 用于判断所述 DCIx是否为虚检 DCIx, 并将判断 结果提供给所述功控模块;
所述功控模块, 用于若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带 的所述 TPC命令; 若所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控。
在第三方面的第一种可能的实现方式中, 所述功控模块具体用于: 若 所述 DCIx 不是虚检 DCIx, 将所述 TPC 命令对应的调整步长, 累加至 PUCCH功率控制累计值。
结合第三方面或第三方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 所述虚检判断模块具体用于: 检测在所述当前子帧是否还接 收到下行控制信息格式 0 DCI0; 若接收到所述 DCI0, 判定所述 DCIx是 虚检 DCIx; 若未接收到所述 DCI0, 判定所述 DCIx不是虚检 DCIx。
结合第三方面的第一种可能的实现方式, 在第三种可能的实现方式 中, 所述功控模块还用于: 将所述 TPC 命令对应的调整步长, 累加至 PUCCH功率控制累计值之后, 将未对所述 PUCCH功率控制累计值进行 累加的时长清零。
结合第三方面的第一种可能的实现方式, 在第四种可能的实现方式 中, 还包括:
时长判断模块, 用于在所述功控模块丟弃所述 DCIx携带的所述 TPC 命令之后, 判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否 达到预设门限值, 若达到, 触发所述功控模块执行清零处理;
所述功控模块还用于: 响应所述触发, 将所述 PUCCH功率控制累计 值清零。
第四方面, 提供一种网络设备, 包括发送判断模块、 修改模块和发送 模块, 其中:
所述发送判断模块, 用于若在当前子帧存在待发送的 DCIx, 判断所 述当前子帧是否存在待发送的 DCI0;
所述修改模块, 用于若所述发送判断模块判断存在所述待发送的 DCI0, 将所述 DCIx携带的所述 TPC命令修改为不调节 PUCCH功率; 所述发送模块, 用于发送修改后的 DCIx, 或者若所述发送判断模块 判断不存在所述待发送的 DCI0时, 直接发送所述 DCIx。
第五方面, 提供一种 PUCCH功控系统, 包括本发明实施例的网络设 备, 以及本发明实施例的用户设备, 所述网络设备与所述用户设备连接。
根据本发明实施例提供的物理上行控制信道功控方法、 设备及系统, 由 于用户设备在接收到 DCIx后, 判断所接收的 DCIx是否为虚检 DCIx, 并 仅根据非虚检的 DCIx所携带的 TPC命令,更新 PUCCH功率控制累计值, 进行 PUCCH功率控制,从而实现根据基站指示的 PUCCH功率调节幅度, 进行用户设备的 PUCCH发送功率调节,提高了物理上行控制信道功控的准 确度和有效性。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。 图 1为本发明一个实施例的 PUCCH功控方法的流程示意图;
图 2为本发明另一个实施例的 PUCCH功控方法的流程示意图; 图 3为本发明另一个实施例的 PUCCH功控方法的流程示意图; 图 4为本发明另一个实施例的 PUCCH功控方法的流程示意图; 图 5为本发明一个实施例的用户设备的结构示意图;
图 6为本发明另一个实施例的用户设备的结构示意图;
图 7为本发明另一个实施例的用户设备的结构示意图;
图 8为本发明一个实施例的网络设备的结构示意图;
图 9为本发明另一个实施例的网络设备的结构示意图;
图 10为本发明一个实施例的 PUCCH功控系统。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述,显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
实施例一
本实施例从用户设备 ( User Equipment , UE )的角度,对本发明的 PUCCH 功控方法进行详细说明。
图 1为本发明一个实施例的 PUCCH功控方法的流程示意图。如图 1所 示, 该 PUCCH功控方法包括以下步骤:
101 , 在当前子帧接收 DCIx, 所述 DCIx携带有传输功率控制 TPC命 令;
具体地, UE例如通过盲检测 PDCCH信道, 获取 DCIx, 该 DCIx可 以是 DCI 1A、 DCI IB, DCI ID, DCI 1 , DCI 2A、 DCI 2等。 DCIx包含 TPC命令字段, 该字段的值可以是 0、 1、 2或 3等。
102, 判断所述 DCIx是否为虚检 DCIx;
具体地, UE可以采用预设的任意方式来判断步骤 101 中所接收到的 DCIx是否为虚检 DCIx , 例如 UE判断在当前子帧之前的预设时段内是否 进行了 PUCCH发送等。本实施例中不对判断 DCIx是否为虚检 DCIx的具 体方式进行限制。
103 , 若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带的所述 TPC命 令; 若所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控。
具体地,若通过步骤 102判断获知 DCIx是虚检 DCIx,则丟弃该 DCIx, 不根据该 DCIx所携带的 TPC命令进行 PUCCH功控; 若通过步骤 102判 断获知 DCIx不是虚检 DCIx,则对该 DCIx进行解析,提取 DCIx中的 TPC 命令, 并根据已知的 TPC命令与调整步长之间的映射关系,确定所提取的 TPC命令对应的调整步长。 更为具体地, 表 1 为目前协议规定的 TPC命 令与调整步长的映射关系。
表 1
Figure imgf000007_0001
如表 1所示, 若从 DCIx中提取出的 TPC命令为 "0" , UE在当前的
PUCCH功率控制累计值的基础上, 累加 "-1" , 即将 PUCCH发送功率调 低 IdB; 若从 DCIx中提取出的 TPC命令为 " 1" , UE在当前的 PUCCH 功率控制累计值的基础上, 累加 "0" , 即保持 PUCCH发送功率不变; 若 从 DCIx中提取出的 TPC命令为 "2" 或 "3" , UE在当前的 PUCCH功 率控制累计值的基础上, 累加 " 1" 或 "3" , 即将 PUCCH发送功率调高 IdB或 3dB。
根据上述实施例的 PUCCH功控方法,由于用户设备在接收到 DCIx后, 判断所接收的 DCIx是否为虚检 DCIx, 并仅根据非虚检的 DCIx所携带的 TPC命令, 更新 PUCCH功率控制累计值, 进行 PUCCH功率控制, 从而 实现根据基站指示的 PUCCH功率调节幅度, 进行用户设备的 PUCCH发 送功率调节, 提高了物理上行控制信道功控的准确度和有效性。
具体地, 以一个具体场景为例, 说明上述实施例的 PUCCH功控方法相 对于现有技术的有益效果。
例如: UE在一段时间内未进行 PUCCH发送, 由于时间较长通常存在一 定的 DCI虚检, 例如虚检到 8个 DCIx。 假设该 8个虚检 DCIx中, 表 1所示 的 4种 TPC命令的取值出现的概率相同,则该 8个 TPC命令对应的调整步长 所形成的序列为: { 3 , -1 , 0, 1 , 1 , 3 , 0, -1 } 。
若采用现有技术,直接根据接收到的 DCIx携带的 TPC命令进行 PUCCH 功率调节, 则在该段时间内, UE的 PUCCH功率控制累计值提高了 6dB。 因此当 UE再次进行 PUCCH发送时,UE会按照提高了 6dB之后的 PUCCH 功率控制累计值确定发送功率, 即 PUCCH发送功率过大。 虽然基站在接 收到 UE的 PUCCH发送信号后, 例如为信道质量指示 (Channel Quality Indicator, CQI )请求、 上行调度请求指示 ( Schduling Request Indication, SRI )或确认消息(Acknowledge, ACK )等, 能够通过下发 DCIx将该 UE 的 PUCCH发送功率降低, 但是仍会有一段时间内, 由于该 UE的 PUCCH发 送功率过大, 而造成对其他 UE的 PUCCH信号的干扰, 从而导致其他 UE的 上行 CQI/SRI/ACK反馈不准确, 导致流量突变或用户异常退网等。 而通过采 用本发明上述实施例的 PUCCH功控方法, 则能够有效降低由于虚检 DCIx 而产生的上述缺陷。
实施例二
在上述实施例的基础上, 本实施例中, 提供一种判断 DCIx是否为虚检 DCIx的具体方式。
图 2为本发明另一个实施例的 PUCCH功控方法的流程示意图。 如图 2 所示, 该 PUCCH功控方法包括以下步骤:
201 , UE在当前子帧接收到携带有 TPC命令的 DCIx;
202, UE判断当前子帧是否接收到下行控制信息格式 0 ( DCI0 ) ; 若 未接收到, 则执行步骤 203; 若接收到, 则执行步骤 204;
203 , 根据当前子帧的 DCIx携带的 TPC命令进行 PUCCH功率调节, 并结束流程;
204, 丟弃 DCIx中的 TPC命令, 并结束流程。
根据本实施例的 PUCCH功控方法, 由于在实际应用中, 在同个载波中 UE的物理上行共享信道 ( Physical Uplink Shared Channel, PUSCH )发送和 PUCCH发送通常是互斥出现的, UE较长时间没有 PUCCH发送的场景通常 是由于连接的 PUSCH发送而导致的。 因此, UE在接收到 DCIx的同时, 判 断相同子帧是否还存在 DCI0调度, 即判断是否接收到基站下发的用于指 示 UE在随后的 PUSCH上解调对应业务数据报文的 DCI0。若接收到 DCI0, 则可确定所接收到的 DCIx为虚检 DCIx,从而有效降低虚检 DCI对 UE的 PUCCH发送功率的影响。
进一步地, 当 UE按照上述步骤 201-204执行 PUCCH功控时, 基站 在发送 DCIx时, 执行如下流程:
若在当前子帧存在待发送的 DCIx, 则判断所述当前子帧是否存在待 发送的 DCI0, 所述 DCIx携带有 TPC命令;
若不存在所述待发送的 DCI0, 则发送所述 DCIx; 若存在所述待发送 的 DCI0, 则将所述 DCIx中的 TPC强制设置为不调节 PUCCH发送功率, 即 1 , 然后再发送该 DCIx。 等待下次 PUCCH功控需求的到来后, 例如再 次接收到 UE发送的 PUCCH信号, 再生成新的携带有效 TPC的 DCIx。
通过由基站按照上述方式发送 DCIx, 使得 UE 采用上述实施例的
PUCCH功控方法时, 不会将基站下发的 DCIx误判为虚检 DCIx, 进一步提 高了 PUCCH功控的有效性和准确性。
实施例三
在上述任一实施例的基础上, PUCCH功控方法还包括以下步骤: 判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否达到预 设门限值;
若达到, 则将所述 PUCCH功率控制累计值清零。
图 3为本发明另一个实施例的 PUCCH功控方法的流程示意图。 如图 3 所示, 该 PUCCH功控方法包括以下步骤:
301 , UE在当前子帧接收到携带有 TPC命令的 DCIx;
302, UE判断当前子帧是否接收到下行控制信息格式 0 ( DCI0 ) ; 若 未接收到, 则执行步骤 303; 若接收到, 则执行步骤 305;
303 , 根据当前子帧的 DCIx携带的 TPC命令进行 PUCCH功率调节; 之后执行步骤 304;
304,将未对 PUCCH功率控制累计值进行累加的时长清零, 并结束流 程;
具体地, UE 中例如通过设置一个计时器来记录未对 PUCCH功率控 制累计值进行累加的时长。 该计时器初始值为 0, 当 UE接入网络时启动 该计时器, 并且 UE在每次对 PUCCH功率控制累计值进行累加时, 将该 计时器清 0,以使该计时器的时长用于记录在连续多长时间内未对 PUCCH 功率控制累计值进行累加。
305 , 丟弃 DCIx中的 TPC命令; 之后执行步骤 306;
306,判断未对 PUCCH功率控制累计值进行累加的时长是否达到预设 门限值; 若否, 则结束流程; 若是, 则执行步骤 307;
具体地, UE存储有一个预设门限值, 该预设门限值既可以直接配置 在 UE中, 也可以由基站向 UE下发, 本发明实施例中对此不做限制。 并 且, 该预设门限值可以根据需要设置为任意时长, 例如为 30秒。 UE根据 计时器记录的时长, 判断未对 PUCCH功率控制累计值进行累加的时长是 否大于等于预设门限值, 若否, 则结束流程;
307, 将 PUCCH功率控制累计值清零, 将未对 PUCCH功率控制累计 值进行累加的时长清零, 并结束流程。
具体地, 若通过步骤 306判断获知未对 PUCCH功率控制累计值进行累 加的时长大于等于预设门限值, 则将 PUCCH功率控制累计值清零, 即: 将 UE的 PUCCH发送功率恢复为 UE接入网络时的默认功率。
上述图 3所示的流程仅作为 UE在上述实施例一或二的基础上, 结合 判断是否需对 PUCCH功率控制累计值清零的一个示例。
在另一个示例中, UE 还可以设置有一个周期定时器, 当该周期定时 器超时时, UE判断未对所述 PUCCH功率控制累计值进行累加的时长是 否达到预设门限值。 若是, 则将 PUCCH功率控制累计值清零, 并重新启 用周期定时器; 若否, 则不对 PUCCH功率控制累计值进行处理, 重新启 用周期定时器。 其中, 该周期定时器的时长可以根据需要任意设置, 例如: 设置为 1 ms (对应一个子帧的时长),则在每个子帧均判断是否需对 PUCCH 功率控制累计值清零; 还可以设置为 Is, 则每间隔 Is执行一次是否需对 PUCCH功率控制累计值清零的判断。
根据上述实施例的 PUCCH功控方法, 由于判断未对 PUCCH功率控 制累计值进行累加的时长, 是否达到预设门限值, 并当达到时, 将所述
PUCCH 功率控制累计值清零, 进一步避免由于 UE 过长时间未进行 PUCCH发送而导致的 PUCCH发送功率过高。
实施例四
本实施例从基站的角度, 对本发明的 PUCCH功控方法进行详细说明。 图 4为本发明另一个实施例的 PUCCH功控方法的流程示意图。 如图 4 所示, 该 PUCCH功控方法包括以下步骤:
401 , 若在当前子帧存在待发送的 DCIx, 则判断所述当前子帧是否存 在待发送的 DCI0, 所述 DCIx携带有 TPC命令;
402, 若存在所述待发送的 DCI0, 则将所述 DCIx携带的 TPC命令修 改为不调节 PUCCH发送功率 (例如设置为 1 ) , 并发送修改后的 DCIx; 若不存在所述待发送的 DCI0, 则直接发送所述 DCIx。
根据本实施例的 PUCCH功控方法, 由于基站通过下发 DCIx对 UE 进行 PUCCH功控时, 判断同一子帧内是否下发 DCI0, 若存在, 则在该子 帧内不下发携带有用于指示对 PUCCH发送功率进行调节的 TPC命令的 DCIx, 从而使得 UE通过判断同一子帧内是否接收到 DCI0来判断接收到 的 DCIx是否为虚检 DCIx时, 不会遗漏基站下发的携带有效 TPC命令的 DCIx, 从而实现根据基站指示的 PUCCH功率调节幅度, 进行用户设备的 PUCCH发送功率调节, 提高了物理上行控制信道功控的准确度和有效性。
实施例五
图 5为本发明一个实施例的用户设备的结构示意图。 如图 5所示, 该用 户设备包括 DCIx获取模块 51、 虚检判断模块 52和功控模块 53 , 其中: 所述 DCIx获取模块 51 , 用于在当前子帧接收 DCIx, 并触发所述虚 检判断模块 52执行操作, 所述 DCIx携带有传输功率控制 TPC命令; 所述虚检判断模块 52, 用于判断所述 DCIx是否为虚检 DCIx, 并将 判断结果提供给所述功控模块 53;
所述功控模块 53 , 用于若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携 带的所述 TPC命令; 若所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进 行 PUCCH功控。
本实施例的用户设备执行 PUCCH 功控的流程与上述实施例一至三的 PUCCH功控方法相同, 故此处不再赘述。
根据本实施例的用户设备,由于在接收到 DCIx后,判断所接收的 DCIx 是否为虚检 DCIx, 并仅根据非虚检的 DCIx 所携带的 TPC 命令, 更新 PUCCH功率控制累计值, 进行 PUCCH功率控制, 从而实现根据基站指 示的 PUCCH功率调节幅度, 进行用户设备的 PUCCH发送功率调节, 提 高了物理上行控制信道功控的准确度和有效性。
进一步地, 在上述实施例的用户设备中, 所述功控模块具体用于: 若所 述 DCIx不是虚检 DCIx,将所述 TPC命令对应的调整步长,累加至 PUCCH 功率控制累计值。
进一步地, 在上述实施例的用户设备中, 所述虚检判断模块具体用于: 检测所述当前子帧除接收到所述 DCIx,是否还接收到下行控制信息格式 0 DCI0; 若接收到所述 DCI0, 则判定所述 DCIx是虚检 DCIx; 若未接收到 所述 DCI0, 则判定所述 DCIx不是虚检 DCIx。
进一步地, 在上述实施例的用户设备中, 所述功控模块还用于: 将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值之后, 将未对 所述 PUCCH功率控制累计值进行累加的时长清零。
实施例六
图 6为本发明另一个实施例的用户设备的结构示意图。 如图 6所示, 在 上述实施例的用户设备中, 还包括:
时长判断模块 54, 用于在所述功控模块 53丟弃所述 DCIx携带的所 述 TPC命令之后,判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否达到预设门限值, 若达到, 则触发所述功控模块 53执行清零处理; 相应地, 所述功控模块 53还用于: 响应所述触发, 将所述 PUCCH功 率控制累计值清零。
实施例七
图 7为本发明另一个实施例的用户设备的结构示意图。 如图 5所示, 该 用户设备包括接收机 71、发射机 72和存储器 73,以及分别与所述接收机 71、 发射机 72和存储器 73连接的处理器 74。 当然, 用户设备还可以包括天线等 其它部件, 本发明实施例中不做限制。
其中: 存储器 73中存储一组程序代码, 且处理器 74用于调用存储器 73 中存储的程序代码, 用于执行以下操作:
通过接收机 71在当前子帧接收下行控制信息 DCIx, 所述 DCIx携带 有传输功率控制命令 TPC;
判断所述 DCIx是否为虚检 DCIx;
若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带的所述 TPC命令; 若 所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控。
本实施例的用户设备执行 PUCCH 功控的流程与上述实施例一至三的 PUCCH功控方法相同, 故此处不再赘述。
根据本实施例的用户设备,由于在接收到 DCIx后,判断所接收的 DCIx 是否为虚检 DCIx, 并仅根据非虚检的 DCIx 所携带的 TPC 命令, 更新 PUCCH功率控制累计值, 进行 PUCCH功率控制, 从而实现根据基站指 示的 PUCCH功率调节幅度, 进行用户设备的 PUCCH发送功率调节, 提 高了物理上行控制信道功控的准确度和有效性。
实施例八
图 8为本发明一个实施例的网络设备的结构示意图。 如图 8所示, 该网 络设备包括发送判断模块 81、 修改模块 82和发送模块 83 , 其中:
所述发送判断模块 81 , 用于若在当前子帧存在待发送的 DCIx, 则判 断所述当前子帧是否存在待发送的 DCI0;
所述修改模块 82, 用于若所述发送判断模块 81判断存在所述待发送 的 DCI0 ,则将所述 DCIx携带的所述 TPC命令修改为不调节 PUCCH功率; 所述发送模块 83 , 用于发送修改后的 DCIx, 或者若所述发送判断模 块 81判断不存在所述待发送的 DCI0时, 直接发送所述 DCIx。
本实施例的网络设备例如为基站, 其执行 PUCCH功控的流程与上述实 施例四的 PUCCH功控方法相同, 故此处不再赘述。
根据本实施例的网络设备, 由于通过下发 DCIx对 UE进行 PUCCH功 控时, 判断同一子帧内是否下发 DCI0, 若存在, 则在该子帧内不下发携 带有用于指示对 PUCCH发送功率进行调节的 TPC命令的 DCIx, 从而使 得 UE通过判断同一子帧内是否接收到 DCI0来判断接收到的 DCIx是否为 虚检 DCIx时, 不会遗漏网络设备下发的携带有效 TPC命令的 DCIx, 从而 实现根据网络设备指示的 PUCCH功率调节幅度,进行用户设备的 PUCCH 发送功率调节, 提高了物理上行控制信道功控的准确度和有效性。
实施例九
图 9为本发明另一个实施例的网络设备的结构示意图。 如图 9所示, 该 网络设备包括发射机 91、 接收机 92、 存储器 93以及分别与发射机 91、 接收 机 92和存储器 93连接的处理器 94。 基站还可以包括天线、 基带处理部件、 中射频处理部件、 输入输出装置等通用部件, 本发明实施例在此不做任何限 制。
其中, 存储器 93中存储一组程序代码, 且处理器 94用于调用存储器 93 中存储的程序代码, 用于执行以下操作:
若在当前子帧存在待发送的 DCIx, 则判断所述当前子帧是否存在待 发送的 DCI0, 所述 DCIx携带有 TPC命令;
若存在所述待发送的 DCI0, 则将所述 DCIx携带的所述 TPC命令修 改为不调节 PUCCH功率, 并由发射机 91发送修改后的 DCIx; 若不存在 所述待发送的 DCI0, 则由发射机 91直接发送所述 DCIx。
本实施例的网络设备例如为基站, 其执行 PUCCH功控的流程与上述实 施例四的 PUCCH功控方法相同, 故此处不再赘述。
根据本实施例的网络设备, 由于通过下发 DCIx对 UE进行 PUCCH功 控时, 判断同一子帧内是否下发 DCI0, 若存在, 则在该子帧内不下发携 带有用于指示对 PUCCH发送功率进行调节的 TPC命令的 DCIx, 从而使 得 UE通过判断同一子帧内是否接收到 DCI0来判断接收到的 DCIx是否为 虚检 DCIx时, 不会遗漏网络设备下发的携带有效 TPC命令的 DCIx, 从而 实现根据网络设备指示的 PUCCH功率调节幅度,进行用户设备的 PUCCH 发送功率调节, 提高了物理上行控制信道功控的准确度和有效性。
实施例十
图 10为本发明一个实施例的 PUCCH功控系统, 该 PUCCH功控系统包 括上述实施例的网络设备 10a,以及上述实施例的用户设备 10b,网络设备 10a 与用户设备 10b连接。
本实施例的 PUCCH功控系统中实现 PUCCH功控的流程与上述任一实施 例的 PUCCH功控方法相同, 故此处不再赘述。
根据本实施例的 PUCCH功控系统, 由于用户设备在接收到 DCIx后, 判断所接收的 DCIx是否为虚检 DCIx, 并仅根据非虚检的 DCIx所携带的 TPC命令, 更新 PUCCH功率控制累计值, 进行 PUCCH功率控制, 从而 实现根据网络设备指示的 PUCCH功率调节幅度,进行用户设备的 PUCCH 发送功率调节, 提高了物理上行控制信道功控的准确度和有效性。
本领域普通技术人员可以理解: 实现上述各方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成。 前述的程序可以存储于一计算 机可读取存储介质中。 该程序在执行时, 执行包括上述各方法实施例的步 骤; 而前述的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存 储程序代码的介质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种物理上行控制信道 PUCCH功控方法, 其特征在于, 包括: 在当前子帧接收下行控制信息 DCIx,所述 DCIx携带有传输功率控制
TPC命令;
判断所述 DCIx是否为虚检 DCIx;
若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带的所述 TPC命令; 若 所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控命令。
2、 根据权利要求 1所述的 PUCCH功控方法, 其特征在于, 所述根据 所述 TPC进行 PUCCH功率调节, 包括:
将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值。
3、 根据权利要求 1或 2所述的 PUCCH功控方法, 其特征在于, 所述 判断所述 DCIx是否为虚检 DCIx, 包括:
检测在所述当前子帧是否还接收到下行控制信息格式 0 DCI0;
若接收到所述 DCI0, 判定所述 DCIx是虚检 DCIx; 若未接收到所述 DCI0, 判定所述 DCIx不是虚检 DCIx。
4、 根据权利要求 2所述的 PUCCH功控方法, 其特征在于, 将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值之后,还包括: 将未对所述 PUCCH功率控制累计值进行累加的时长清零。
5、 根据权利要求 2所述的 PUCCH功控方法, 其特征在于, 丟弃所述 DCIx携带的所述 TPC命令之后, 还包括:
判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否达到预 设门限值;
若达到, 将所述 PUCCH功率控制累计值清零。
6、 一种 PUCCH功控方法, 其特征在于, 包括:
若在当前子帧存在待发送的 DCIx, 判断所述当前子帧是否存在待发 送的 DCI0 , 所述 DCIx携带有 TPC命令;
若存在所述待发送的 DCI0, 将所述 DCIx携带的所述 TPC命令修改 为不调节 PUCCH功率, 并发送修改后的 DCIx; 若不存在所述待发送的
DCI0, 直接发送所述 DCIx。
7、 一种用户设备, 其特征在于, 包括 DCIx获取模块、 虚检判断模块 和功控模块, 其中:
所述 DCIx获取模块, 用于在当前子帧接收 DCIx, 并触发所述虚检判 断模块执行操作, 所述 DCIx携带有传输功率控制 TPC命令;
所述虚检判断模块, 用于判断所述 DCIx是否为虚检 DCIx, 并将判断 结果提供给所述功控模块;
所述功控模块, 用于若所述 DCIx是虚检 DCIx, 丟弃所述 DCIx携带 的所述 TPC命令; 若所述 DCIx不是虚检 DCIx, 根据所述 TPC命令进行 PUCCH功控。
8、 根据权利要求 7所述的用户设备, 其特征在于, 所述功控模块具 体用于: 若所述 DCIx不是虚检 DCIx, 将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值。
9、 根据权利要求 7或 8所述的用户设备, 其特征在于, 所述虚检判 断模块具体用于: 检测在所述当前子帧是否还接收到下行控制信息格式 0 DCI0; 若接收到所述 DCI0, 判定所述 DCIx是虚检 DCIx; 若未接收到所 述 DCI0, 判定所述 DCIx不是虚检 DCIx。
10、 根据权利要求 8所述的用户设备, 其特征在于, 所述功控模块还 用于: 将所述 TPC命令对应的调整步长, 累加至 PUCCH功率控制累计值 之后, 将未对所述 PUCCH功率控制累计值进行累加的时长清零。
11、 根据权利要求 8所述的用户设备, 其特征在于, 还包括: 时长判断模块, 用于在所述功控模块丟弃所述 DCIx携带的所述 TPC 命令之后, 判断未对所述 PUCCH功率控制累计值进行累加的时长, 是否 达到预设门限值, 若达到, 触发所述功控模块执行清零处理;
所述功控模块还用于: 响应所述触发, 将所述 PUCCH功率控制累计 值清零。
12、 一种网络设备, 其特征在于, 包括发送判断模块、 修改模块和发 送模块, 其中:
所述发送判断模块, 用于若在当前子帧存在待发送的 DCIx, 判断所 述当前子帧是否存在待发送的 DCI0;
所述修改模块, 用于若所述发送判断模块判断存在所述待发送的 DCI0, 将所述 DCIx携带的所述 TPC命令修改为不调节 PUCCH功率; 所述发送模块, 用于发送修改后的 DCIx, 或者若所述发送判断模块 判断不存在所述待发送的 DCI0时, 直接发送所述 DCIx。
13、 一种 PUCCH功控系统, 其特征在于, 包括权利要求 12所述的网 络设备, 以及权利要求 7-11任一所述的用户设备, 所述网络设备与所述用 户设备连接。
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