WO2017193332A1 - Terminal, procédé d'émission de signal et station de base - Google Patents

Terminal, procédé d'émission de signal et station de base Download PDF

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Publication number
WO2017193332A1
WO2017193332A1 PCT/CN2016/081861 CN2016081861W WO2017193332A1 WO 2017193332 A1 WO2017193332 A1 WO 2017193332A1 CN 2016081861 W CN2016081861 W CN 2016081861W WO 2017193332 A1 WO2017193332 A1 WO 2017193332A1
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Prior art keywords
power control
tti
control parameter
length
power
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PCT/CN2016/081861
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English (en)
Chinese (zh)
Inventor
李军
胡文权
花梦
焦淑蓉
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华为技术有限公司
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Priority to PCT/CN2016/081861 priority Critical patent/WO2017193332A1/fr
Publication of WO2017193332A1 publication Critical patent/WO2017193332A1/fr

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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

Definitions

  • the present invention relates to the field of communications, and in particular to a method, terminal and base station for transmitting signals.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP 3rd Generation Partnership Project
  • LTE-A Long Term Evolution-Advanced
  • the peak rates supported by LTE-A are downlink 1Gb/s and uplink 500Mb/s.
  • the LTE system mainly includes a terminal and a base station (Evolved NodeB, referred to as "eNode B").
  • the communication link from the terminal to the base station is called an uplink.
  • power control of a terminal uplink transmission channel is generally required.
  • one subframe is a basic time scheduling unit, that is, a Transmission Time Interval (TTI), and the time length is 1 millisecond ms.
  • TTI Transmission Time Interval
  • the 3GPP standardization organization is focusing on the standardization of the next-generation 5G mobile communication system.
  • short delay is one of the key indicators, which means that the TTI must be shortened and reduced. End-to-end delay between the terminal UE and the base station.
  • the embodiment of the invention provides a method, a terminal and a base station for transmitting signals, which can improve the reliability of the transmitted signal.
  • a method of transmitting a signal comprising:
  • TTI for signal transmission from a plurality of transmission time intervals TTI having different lengths of time
  • the signal transmission is performed on the TTI according to the transmission power.
  • the terminal determines the transmission power corresponding to the time length of the TTI according to the power control formula, and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the terminal determines the length of the TTI of the signal transmission, which is determined by the terminal autonomously, or is confirmed based on the indication of the base station, or is determined by the base station and the terminal jointly negotiated.
  • the sending power may be determined by the terminal according to the existing power control formula and the newly added power control parameter, where the value of the power control parameter is related to the time length of the TTI;
  • the internal parameters of the existing power control formula are adjusted to determine, wherein the internal parameters are related to the length of time of the TTI.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter;
  • the value of the first power control parameter is determined according to the length of time of the TTI.
  • the first power control formula is obtained by adding a first power control parameter on a reference of an existing power control formula (for example, a second power control formula), and the second power control formula may be corresponding to a preset time length.
  • the power control formula can be understood as an existing or preset TTI power control formula.
  • the preset time length is the system preset TTI.
  • the second power control parameter is an internal parameter of the second power control formula.
  • the second power control formula includes a power control formula of a physical uplink control channel PUCCH, a power control formula of a physical uplink shared channel PUSCH, and a power control control of a reference signal SRS.
  • the preset power control formula for PUCCH includes the following cases:
  • P CMAX,c (i) is the maximum transmit power of the terminal in subframe i and current serving cell c.
  • the P O_PUCCH can be regarded as the power when the base station desires to receive a single resource block (Resource Block, referred to as "RB"), which is related to the uplink noise and the interference size.
  • RB Resource Block
  • h(n CQI , n HARQ , n SR ) is related to the format of the PUCCH, and different PUCCH formats correspond to different values.
  • the value of ⁇ F_PUCCH (F) is controlled by the upper layer, and its size is related to the format adopted by the PUCCH, and is generally based on the PUCCH format 1a.
  • the parameter ⁇ TxD (F') is related to transmit diversity and is only valid when PUCCH is transmitted on two antenna ports, otherwise the parameter takes a value of zero.
  • g(i) is the current PUCCH power control adjustment state.
  • P CMAX, c (i) P O_PUCCH, ⁇ F_PUCCH (F), g (i) in (a) already described
  • PL c is a path loss
  • the parameters ⁇ TF,c (i) are defined as follows:
  • ⁇ TF,c (i) 10log 10 (2 1.25 ⁇ BPRE(i) -1)
  • the O UCI (i) transmits Hybrid Automatic Repeat reQuest Acknowledgment (HARQ-ACK) or Scheduling Request (SR) in the PUCCH format 4/5. /Number of bits of the antenna indicator (Rank Indicator, hereinafter referred to as "RI”) / Channel Quality Indicator (CQI) / Precoding Matrix Indicator (PMI) .
  • N RE (i) is the number of resource elements (Resource elements, referred to as "RE") on the subframe i.
  • P PUCCH (i) min ⁇ P CMAX,c (i),P O_PUCCH +PL c +g(i) ⁇
  • the preset power control formula for PUSCH includes the following cases:
  • P CMAX,c (i) is the maximum transmit power of the terminal in subframe i and current serving cell c;
  • M PUSCH,c (i) is the PUSCH bandwidth (in RB);
  • P O_PUSCH,c (j) For the power expected to receive a single RB, the value is controlled by the upper parameter according to j (j ⁇ 0,1,2 ⁇ );
  • ⁇ c (j) is the path loss compensation factor;
  • PL c is the downlink path loss Estimated, in dB;
  • ⁇ TF,c (i) is the transmit power offset, reflecting that different modulation formats require different signal-to-noise ratios (Signal to Interference plus Noise Ratio, simply "SINR”) in PUSCH transmission. );
  • f c (i) is the current PUSCH power control adjustment state.
  • P SRS_OFFSET,c (m) is a semi-static parameter configured by the upper layer
  • M SRS,c is the SRS bandwidth (in RB).
  • the acquiring the value of the first power control parameter according to the length of the TTI includes:
  • the value of the first power control parameter may be determined by a function f, which is related to the TTI. For example, corresponding to the second power control formula, after the function f is added, the first power control formula can be obtained.
  • the first power control formula is specifically for:
  • P PUCCH (i) min ⁇ P CMAX,c (i),P O_PUCCH +PL c +g(i)+f ⁇
  • the first power control formula is specifically for:
  • the first power control formula is specifically for:
  • the selection of the function f can be determined according to actual needs.
  • determining a value of the first power control parameter according to the length of time of the TTI including:
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T s represents the length of time of the TTI
  • the f represents the first power control parameter
  • the N represents the number of symbols of the data or control information transmitted within the preset time length
  • the N s represents the number of symbols of the data or control information transmitted during the time length of the TTI .
  • the preset time length is greater than or equal to the TTI, or the preset time length is less than or equal to the TTI, or the preset time length is 1 millisecond ms or a preset value different from 1 ms.
  • the first control parameter f can flexibly increase or decrease the coefficient, which is not limited thereto.
  • the first power control formula is obtained for different situations as follows:
  • the first power control parameter is added after that, for different situations, the first power control formula is obtained as follows:
  • the first power control parameter is added after that, the first power control formula is obtained as follows:
  • the first control parameter f can flexibly increase or decrease the coefficient, which is not limited thereto.
  • the first power control parameter is added after that, for different situations, the first power control formula is obtained as follows:
  • the first power control parameter is added after that, for different situations, the first power control formula is obtained as follows:
  • the first power control parameter is added after that, the first power control formula is obtained as follows:
  • the acquiring the value of the first power control parameter according to the length of the TTI includes:
  • the value of the power offset ⁇ s corresponding to the TTI is determined according to the correspondence between the TTI and the power offset.
  • the correspondence between the TTI and the power offset may be a set of power offsets, and the lengths of the different TTIs correspond to values of different power offsets.
  • This correspondence can be set by higher layer signaling.
  • the first power control formula of the PUCCH channel after the first power control parameter ⁇ s is added , the first power control formula is obtained for different situations as follows:
  • the first power control formula of the PUSCH channel after the first power control parameter ⁇ s is added , the first power control formula is obtained for different situations as follows:
  • the first power control formula is obtained as follows:
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and the method further includes:
  • control information for indicating a value of the first power control parameter, where the value of the first power control parameter is determined by the base station according to the length of time of the TTI.
  • control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI, where the original TTI is included in multiple TTIs, and the original TTI has different time lengths. The length of time for the TTI.
  • the terminal may receive control information of a value of the first power control parameter sent by the base station, where the value of the first power control parameter is determined by the base station according to the length of time of the TTI. For example, the terminal may determine a current value range of the first power control parameter according to the protocol, and further, select a value of the first power control parameter in the current value range according to the control information.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI.
  • the original TTI is included in a plurality of TTIs, and the length of time of the original TTI is different from the length of time of the TTI.
  • determining a transmit power of the signal transmission according to the TTI includes:
  • the power control formula is a second power control formula
  • the power control parameter includes a second power control parameter
  • the method further includes:
  • the second power control parameter receives, by the base station, control information for indicating a value of the second power control parameter, where the control information is used to indicate a value of the second power control parameter from the second preset value range, the second power control parameter
  • the value is determined by the base station according to the length of the TTI; wherein the first preset value range is at least partially different from the second preset value range, and the first preset value range is applicable to the original TTI.
  • the second power control parameter of the second power control formula, and the time length of the original TTI is different from the length of time of the TTI.
  • the second power control formula can be understood as the existing or preset power control method mentioned above. formula.
  • the terminal adjusts the range of the transmission power by changing or adjusting the internal parameters of the second power control formula.
  • the terminal may receive control information for indicating an offset sent by the base station, and according to the control information of the offset, the value range of the second power control parameter may be changed from the first preset value range to the second preset
  • the value range is set; the control information is not necessary, that is, the first preset value range and the second preset value range may be specified by a protocol or a protocol version, so that the terminal can know.
  • the terminal may further receive control information that is sent by the base station to indicate the value of the second power control information, and then determine a value of the second power control parameter from the second preset value range according to the control information.
  • the second preset value range may be obtained by increasing or decreasing the first preset value range, where the first preset value range is applicable to the second power control of the second power control formula of the original TTI.
  • the parameter, and the length of time of the original TTI is different from the length of time of the TTI.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the second power control parameter is: the power of the single resource block RB that the base station expects to receive, or the power of the reference in the single resource block RB that the base station expects to receive, or the single resource that the base station expects to receive.
  • the power associated with the terminal in the block RB is: the power of the single resource block RB that the base station expects to receive, or the power of the reference in the single resource block RB that the base station expects to receive, or the single resource that the base station expects to receive.
  • the transmit power may be determined by adjusting an internal parameter of a power control formula of a preset time length.
  • a power control formula of a preset time length For example, taking the PUCCH channel as an example, when the TTI is shortened to be STTI, for the STTI power control formula, the power control formula for different situations can be described as:
  • P O_sPUCCH P O_NOMINAL_sPUCCH + P O_UE_sPUCCH , where P O_NOMINAL_sPUCCH ⁇ (A', B'), P O_UE_sPUCCH ⁇ (C', D'), can be set by upper layer signaling.
  • P O_PUCCH P O_NOMINAL_PUCCH + P O_UE_PUCCH , wherein the original parameter P O_NOMINAL_PUCCH ⁇ (A, B) P O_UE_PUCCH ⁇ (C, D) is.
  • the parameters ⁇ , ⁇ , ⁇ , and ⁇ are integers related to STTI.
  • the parameters are adjusted by parameters ⁇ , ⁇ , ⁇ , and ⁇ .
  • the value range of the transmit power is determined, and the transmit power corresponding to the STTI is determined, so that the terminal performs signal transmission according to the adjusted transmit power to improve the reliability of the signal transmission.
  • the second power control parameter may be specifically P O_sPUCCH , P O_NOMINAL_sPUCCH or P O_UE_sPUCCH , which is not limited thereto .
  • the first preset value range is obtained according to P O_NOMINAL_PUCCH ⁇ (A, B) P O_UE_PUCCH ⁇ (C, D), and the second preset is taken.
  • the range of values changes the first preset range of values to
  • P O_NOMINAL_sPUCCH ⁇ (A', B')
  • P O_UE_sPUCCH ⁇ (C', D').
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, the method further includes:
  • control information for indicating a value of the third power control parameter where the value of the third power control parameter is determined by the base station according to the length of time of the TTI;
  • the third power control formula is different from the power control formula specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • the power control formula is a power control formula different from that specified in any of the Long Term Evolution LTE communication protocol versions Release 8 to Release 13.
  • the third power control formula corresponds to the third power control parameter.
  • the terminal may also receive control information sent by the base station to indicate the value of the third power control parameter, where the value of the third power control parameter is determined by the base station according to the length of time of the TTI. .
  • control information is used by the terminal to indicate a value of the third power control parameter from a current value range of the third power control parameter.
  • the terminal may determine the value of the third power control parameter in the current value range according to the control information sent by the base station.
  • the method also includes:
  • the current value range of the third power control parameter is selected from a plurality of value ranges.
  • the terminal may select the current value range of the third power control parameter in the range of values of the multiple TTIs in combination with the length of the current TTI.
  • the terminal when selecting a current value range of the third power control parameter, selects from multiple value ranges according to the indication information of the base station.
  • the terminal when selecting the current value range of the third power control parameter, autonomously selects according to the length of time of the TTI.
  • the selection of the current value range of the third power control parameter is relatively flexible, and the terminal or the base station can determine.
  • a method of transmitting a signal comprising:
  • the base station determines the control information of the power control parameter, and sends the control information of the power control parameter to the terminal, so that the terminal can determine the transmit power of the TTI according to the value of the power control parameter, thereby improving signal transmission. Reliability.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, Determining control information of the power control parameter according to the length of the transmission time interval TTI, including:
  • Sending the control information of the power control parameter to the terminal including:
  • control information of the value of the first power control parameter where the control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • determining a value of the first power control parameter according to the TTI includes:
  • the number of symbols of the data or control information and the TTI determines the value of the first power control parameter.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI; wherein the original TTI is included in multiple TTIs, and the length of the original TTI is different from the length of the TTI;
  • the length of the original TTI is specified by any of the Long Term Evolution LTE communication protocol versions Release 8 to Release 13.
  • the specific method for the base station to determine the value of the first power control parameter may be similar to the terminal side.
  • the value of the first power control parameter may be determined by the length of the current TTI and the length of the preset time length.
  • the power control formula is a second power control formula, where the power control parameter includes a second power control parameter, where And determining the control information of the power control parameter according to the length of the transmission time interval TTI, including:
  • the control information of the offset where the offset is used to change the value range of the second power control parameter from the first preset value range to the second preset value range;
  • the control information is not necessary, that is, the first preset value range and the second preset value range may be specified by a protocol or a protocol version, so that the terminal can know.
  • Sending the control information of the power control parameter to the terminal including:
  • Control information for indicating the offset is transmitted to the terminal.
  • the first preset value range is at least partially different from the second preset value range, and the first preset value range is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • the method further includes:
  • Sending the control information of the power control parameter to the terminal including:
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, where the transmission time interval is TTI
  • the length of time determines the control information of the power control parameters, including:
  • Sending the control information of the power control parameter to the terminal including:
  • control information of a value of the third power control parameter where the control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter.
  • the third power control formula is different from the power control formula specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • the base station determines, according to the length of time of the TTI, a value of the power control parameter, including:
  • the value of the power control parameter is determined according to the following formula,
  • the f represents the power control parameter
  • the T represents the preset time length
  • the T s represents the length of time of the TTI
  • f represents the power control parameter
  • the N represents the number of symbols of data or control information transmitted within the preset time length
  • the N s represents the number of symbols of data or control information transmitted within the TTI.
  • the base station determines, according to the length of time of the TTI, a value of the power control parameter, including:
  • the base station can maintain two different sets of values. For example, the value range of the traditional TTI and the value range of the short TTI are provided to the terminal, and the terminal can determine which TTI value range to use according to the length of the TTI. Alternatively, the base station may directly provide the values of the two sets of power control parameters to the terminal, so that the terminal determines the transmit power according to the length of its own TTI.
  • the base station may determine a preset value range of the power control parameter of the TTI according to the length of the TTI, and then determine a value of the power control parameter of the TTI according to the preset value range of the TTI power control parameter. And transmitting the value of the power control parameter of the TTI to the terminal, so that the terminal determines the transmit power according to the value of the power control parameter. That is to say, the base station can also determine the value range of the power control parameter of the TTI.
  • the value range may also be determined by the base station and the terminal jointly negotiated.
  • a terminal for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the apparatus comprises a module or unit for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a base station for performing the method of any of the foregoing second aspect or any of the possible implementations of the second aspect.
  • the apparatus comprises a module or unit for performing the method of any of the second aspect or any of the possible implementations of the second aspect.
  • a terminal in a fifth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor reads the instructions stored by the memory and performs the method provided by the first aspect or any of the possible implementations of the first aspect.
  • a base station in a sixth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor reads the instructions stored by the memory and performs the method provided by any of the second aspect or any of the possible implementations of the second aspect.
  • a seventh aspect a computer readable medium for storing a computer program, the computer program comprising any of the possible implementations of the first aspect or the first aspect, or the second or second aspect The instructions corresponding to the methods in any of the possible implementations.
  • FIG. 1 is a schematic structural diagram of an application scenario in which an embodiment of the present invention is applicable.
  • FIG. 2 shows a schematic flow chart of a method of transmitting a signal according to an embodiment of the present invention.
  • FIG. 3 shows a schematic flow chart of a method of transmitting a signal according to another embodiment of the present invention.
  • FIG. 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • FIG. 5 shows a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of a terminal provided by still another embodiment of the present invention.
  • FIG. 7 is a structural diagram of a base station according to still another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • W-CDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • FDD Frequency Division Frequency Division Duplexing
  • TDD Time Division Duplexing
  • UMTS Universal Mobile Telecommunications System
  • WiMax microwave Worldwide Interoperability for Microwave Access
  • a terminal may be referred to as a user equipment (User Equipment, referred to as "UE"), a wireless terminal, a mobile station (Mobile Station, abbreviated as "MS”), or a mobile terminal.
  • UE User Equipment
  • MS Mobile Station
  • the user equipment can communicate with one or more core networks via a Radio Access Network (“RAN"), for example, the user equipment can be a mobile phone (or “cellular” "Telephone” or a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or signals with the wireless access network.
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or “cellular” "Telephone” or a computer with a mobile terminal, etc.
  • the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or signals with the wireless access network.
  • the base station may be a base station (Base Transceiver Station, abbreviated as "BTS”) in GSM or CDMA, or may be a base station (NodeB, referred to as "NB") in WCDMA, or may be in LTE.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the present invention is not limited to an evolved base station (Evolutional Node B, referred to as "eNB or e-NodeB"). However, for convenience of description, the following embodiments will be described by taking an eNB as an example.
  • the LTE air interface system mainly includes a terminal and a base station.
  • FIG. 1 is a schematic structural diagram of an application scenario of an embodiment of the present invention.
  • the basic network architecture of the LTE communication system may include a base station (eNodeB) 20 and at least one wireless terminal, such as UE 10, UE 11, UE 12, UE 13, UE 14, UE 15, UE 16, and UE 17 .
  • the eNodeB 20 is configured to provide communication services for at least one of the UE 10 to the UE 17 and access the core network.
  • Any one of the UE 10 to the UE 17 and the eNodeB 20 may include at least one antenna, and FIG. 1 is described by taking multiple antennas as an example.
  • the communication link from any one of the terminal UEs to the base station 20 is called an uplink.
  • the uplink physical channel includes 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
  • the LTE system In order to reduce the power consumption of the UE, and to reduce the interference between the cell and the neighboring cell, the LTE system generally needs to perform power control on the uplink transmission channel of the UE: that is, the transmission power of the terminal UE is changed by means of wireless measurement and command.
  • the transmission power includes power control of the PUSCH, power control of the PUCCH, power control of the PRACH, and power control of the reference signal SRS (Sounding Reference Signal, abbreviated as "SRS").
  • SRS Sounding Reference Signal
  • the accuracy of power control will affect the following two requirements: first, enough energy per bit to achieve the quality of service (QoS); second, minimize the other users of the system Interference and maximum user equipment battery life/endurance requirements. Therefore, the power control of the uplink physical channel in the LTE system is particularly important.
  • the basic time scheduling unit of one subframe is a Transmission Time Interval (TTI), and the length of time is 1 millisecond ms.
  • TTI Transmission Time Interval
  • the length of time is 1 millisecond ms.
  • the basic idea of the technical solution of the present invention can be summarized as: determining the transmission power of the uplink physical channel corresponding to the TTI according to the time length of the TTI.
  • FIG. 2 shows a schematic flow diagram of a method 200 of transmitting a signal in accordance with an embodiment of the present invention. The method is terminated by End execution, as shown in FIG. 2, the method 200 includes:
  • the terminal when selecting or determining the TTI for signal transmission, the terminal may be selected based on the indication information of the base station, or may be confirmed by the base station after the terminal independently selects the TTI, or the terminal and the base station may jointly negotiate to determine The selected TTI is not limited to this.
  • the terminal determines a TTI for signal transmission from a plurality of transmission time intervals TTI having different time lengths, and determines, according to a power control formula, a transmission power corresponding to a time length of the TTI for the TTI, where
  • the power control formula includes a power control parameter, and the TTI is used to perform the signal transmission according to the transmit power. That is to say, the terminal can adaptively determine its corresponding transmission power according to the length of the TTI, thereby performing signal transmission.
  • the terminal determines the transmission power corresponding to the time length of the TTI according to the power control formula, and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the TTI in the embodiment of the present invention may be any length, and the length of the TTI is not limited. For example, if a legacy TTI is selected, it is 1 ms; or, in a future 5G system, the TTI may be a TTI (0.4 ms or 0.8 ms, etc.).
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter;
  • the value of the first power control parameter is determined according to the length of time of the TTI.
  • the terminal acquires a new power control formula, such as a first power control formula
  • the first power control formula includes a first power control parameter, that is, in an existing power control (eg, a second power control formula
  • the first power control parameter is added to obtain the first power Rate control formula.
  • the terminal acquires the value of the first power control parameter according to the current TTI, and determines the transmit power corresponding to the current TTI according to the value of the first power control parameter and the new power control formula (the first power control formula).
  • the second power control formula is a power control formula corresponding to a preset time length, which can be understood as an existing or preset TTI power control formula.
  • the preset time length is the system preset or the original TTI.
  • the second power control formula may be an original power allocation formula of the uplink physical channel.
  • the length of the preset time length is a power control formula corresponding to 1 ms.
  • the second power control parameter is an internal parameter of the second power control formula. After acquiring the value of the first power control parameter, the terminal may determine the transmit power according to the value of the first power control parameter, the value of the second power control parameter, and the first power control formula.
  • the value of the first power control parameter is obtained according to the length of the TTI, including:
  • the preset time length is greater than or equal to the TTI, or the preset time length is less than or equal to the TTI, or the preset time length is 1 millisecond ms or a preset value different from 1 ms. That is to say, in all three cases, the embodiments of the present invention are applicable.
  • the length of the preset time length is not limited to 1 ms. In the future 5G system, there may be more TTI options, for example, 0.4 ms, 0.8 ms, and the like.
  • the change of the length of the TTI is relatively flexible. As long as the length of the TTI changes, the transmit power can be adaptively adjusted according to the change of the length thereof, which is applicable to the embodiment of the present invention.
  • the second power control parameter introduced herein is for the purpose of description, and it is convenient to introduce the second power control formula.
  • the second power control formula is also introduced to more clearly describe the first power control formula, and does not limit the present invention.
  • the second power control formula can be understood as the power control formula of the original or preset TTI.
  • the second power control parameter is an internal parameter in the second power control formula.
  • the second power control formula can be understood as a preset power control formula of a preset time length, that is, an uplink physical signal corresponding to a reference (or preset) TTI in the LTE system.
  • the preset power control formula of the channel generally includes: a preset power control formula of the PUCCH, a preset power control formula of the PUSCH, and a preset power control formula of the SRS.
  • the preset power control formula for PUCCH includes the following cases:
  • P CMAX,c (i) is the maximum transmit power of the terminal in subframe i and current serving cell c.
  • the P O_PUCCH can be regarded as the power when the base station desires to receive a single resource block (Resource Block, referred to as "RB"), which is related to the uplink noise and the interference size.
  • RB Resource Block
  • h(n CQI , n HARQ , n SR ) is related to the format of the PUCCH, and different PUCCH formats correspond to different values.
  • the value of ⁇ F_PUCCH (F) is controlled by the upper layer, and its size is related to the format adopted by the PUCCH, and is generally based on the PUCCH format 1a.
  • the parameter ⁇ TxD (F') is related to transmit diversity and is only valid when PUCCH is transmitted on two antenna ports, otherwise the parameter takes a value of zero.
  • g(i) is the current PUCCH power control adjustment state.
  • P CMAX, c (i) P O_PUCCH, ⁇ F_PUCCH (F), g (i) in (a) already described
  • PL c is a path loss
  • the parameters ⁇ TF,c (i) are defined as follows:
  • ⁇ TF,c (i) 10log 10 (2 1.25 ⁇ BPRE(i) -1)
  • the O UCI (i) transmits Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) or Scheduling Request (SR) in the PUCCH format 4/5. /Number of bits of the antenna indicator (Rank Indicator, hereinafter referred to as "RI") / Channel Quality Indicator (CQI) / Precoding Matrix Indicator (PMI) .
  • N RE (i) is the number of resource elements (Resource elements, referred to as "RE") on the subframe i.
  • P PUCCH (i) min ⁇ P CMAX,c (i),P O_PUCCH +PL c +g(i) ⁇
  • the preset power control formula for the PUSCH includes the following cases:
  • P CMAX,c (i) is the maximum transmit power of the terminal in subframe i and current serving cell c;
  • M PUSCH,c (i) is the PUSCH bandwidth (in RB);
  • P O_PUSCH,c (j) For the power expected to receive a single RB, the value is controlled by the upper parameter according to j (j ⁇ 0,1,2 ⁇ );
  • ⁇ c (j) is the path loss compensation factor;
  • PL c is the downlink path loss Estimated, in dB;
  • ⁇ TF,c (i) is the transmit power offset, reflecting that different modulation formats require different signal-to-noise ratios (Signal to Interference plus Noise Ratio, simply "SINR”) in PUSCH transmission. );
  • f c (i) is the current PUSCH power control adjustment state.
  • P SRS_OFFSET,c (m) is a semi-static parameter configured by the upper layer
  • M SRS,c is the SRS bandwidth (in RB).
  • the determining of the first power control parameter may take various forms.
  • the power control parameter is determined according to the relationship between the length of the currently used TTI and the length of the preset time length, and the number of symbols occupied by the transmission signal according to the current TTI time length may also be determined.
  • the power control parameter is determined by the relationship between the number of symbols occupied by the transmission signal and the length of the preset time length.
  • the method for transmitting a signal determines the transmission power corresponding to the time length of the TTI according to the power control formula and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • determining a value of the first power control parameter according to the length of time of the TTI including:
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T s represents the length of time of the TTI
  • f represents the control parameter of the first power
  • N represents the number of data symbols or control information within the predetermined length transmission time
  • the number of symbols and N s represents data or control information in a TTI length of time of the transmission .
  • the power control parameter can be added to the preset power control formula of the preset time length, for example, the function f, the value of the function can be related to the length of the TTI, or the number of symbols of the data or control information transmitted in the TTI.
  • function f can also be determined according to actual needs, which is not limited thereto.
  • the first power control formula of the PUCCH channel after the first power control parameter is added, for example, the first power control parameter is f, and for different situations, the first power control formula is obtained as follows:
  • the first power control formula of the PUSCH channel after the first power control parameter f is added, the first power control formula is obtained for different situations as follows:
  • the first power control formula is obtained as follows:
  • the method for transmitting a signal determines the transmission power corresponding to the time length of the TTI according to the control formula, and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the terminal may determine a value of the first power control parameter, where the first power control parameter (eg, f) may be selected by the terminal according to a length of the current TTI and a preset time length.
  • the first power control parameter eg, f
  • the terminal may determine a value of the first power control parameter, where the first power control parameter (eg, f) may be selected by the terminal according to a length of the current TTI and a preset time length.
  • the T represents the preset time length
  • T s represents the length of time of the TTI.
  • the first power control formula of PUSCH is as follows:
  • the power control parameters that vary the length of the TTI are described above as the basis for adjusting the transmission power.
  • the power control parameter may also be determined according to the number of symbols occupied by the transmission signal or the control information in the TTI. For example, N indicates the number of symbols for transmitting signals or control information for the preset length of time, and N s indicates the number of symbols for transmitting signals or control information within the length of time (current) of the TTI.
  • the specific power control formula for determining the value of the power control parameter based on the number of symbols occupied by the transmission signal or control information in the TTI is given below. It should be understood that this is only for the convenience of those skilled in the art to understand the technical solutions of the present invention, and does not limit the present invention.
  • the first power control parameter is added after that, for different situations, the first power control formula is obtained as follows:
  • the first power control parameter is added after that, the first power control formula is obtained as follows:
  • the value of the first power control parameter is obtained according to the length of the TTI, including:
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T sTTI represents the length of time of the TTI
  • f represents the power of the first control parameter, which represents the number of N symbol transmission signal or control information within the predetermined length of time
  • the number N s represents symbol transmission signal or control information in a TTI length of time the .
  • the value of the first power control parameter may also be a terminal receiving base station according to a formula.
  • the preset time length is greater than or equal to the TTI, or the preset time length is less than or equal to the TTI, or the preset time length is 1 millisecond ms or a preset value different from 1 ms.
  • determining, according to the length of time of the TTI, a value of the first power control parameter including:
  • the terminal may determine the value of the power offset corresponding to the current length of the current TTI according to the preset correspondence between the length of the TTI and the power offset, and the value of the power offset may be understood as The value of the first power control parameter.
  • the power offset can be represented by ⁇ s , and ⁇ s maintains a one-to-one correspondence with the length of the TTI.
  • the offset set can also be preset, and the offset corresponding to the current TTI is selected by using high layer signaling. Value. These methods can all achieve adjustments to the transmit power.
  • the specific power control formula for determining the value of the power control parameter based on the power offset is given below.
  • the first power control formula of the PUCCH is as follows:
  • the first power control formula of the PUSCH is specifically as follows:
  • the first power control formula of the SRS is as follows:
  • the correspondence between the power offset and the time length of the TTI may be preset, for example, may be set by the base station or may be set by the terminal, which is not limited thereto.
  • the method for transmitting a signal determines the transmission power corresponding to the time length of the TTI according to the power control formula and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the value of the first power control parameter is obtained according to the length of the TTI, including:
  • the base station And receiving, by the base station, a value of the first power control parameter, where the value of the first power control parameter is a value of the power offset corresponding to the time length of the TTI determined by the base station according to the correspondence between the time length of the TTI and the power offset.
  • the value of the power offset is the value of the first power control parameter.
  • the value of the first power control parameter may also be determined by the terminal receiving base station according to a preset correspondence relationship between the time length of the TTI and the power offset. That is to say, the value of the first power control parameter may be determined not only by the terminal but also by the base station after being determined by the base station. The value of this power offset is equivalent to that determined by the previous terminal. For the sake of brevity, the specific meanings thereof and the power control formulas according to the different situations obtained therefrom will not be described herein.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and the method further includes:
  • control information for indicating a value of the first power control parameter, where the value of the first power control parameter is determined by the base station according to the length of time of the TTI.
  • the base station can directly send the terminal control information for the value of the first power control parameter of the currently used TTI.
  • the value of the first power control parameter is determined by the base station according to the length of time of the TTI.
  • control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • the terminal may also receive a current value range sent by the base station for using the first power control parameter.
  • Control information indicating a value of the first power control parameter, and determining, according to the control information, a value of the first power control parameter in a current value range of the first power control parameter.
  • the control information sent by the base station may be the value of the first power control parameter itself, or may be an index or sequence number value of the value of the first power control parameter in the current value range.
  • the power control information can be represented by binary information.
  • the terminal selects a value of the corresponding first power control parameter in a current value range of the first power control parameter according to the control information.
  • the terminal may determine a current value range of the first power control parameter according to the protocol, and further, select a value of the first power control parameter in the current value range according to the control information.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI, where the original TTI is included in multiple TTIs, and the time length of the original TTI is different from the TTI. length of time.
  • the length of the original TTI may be a TTI of the LTE or a non-LTE TTI, which is not limited thereto.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the essence of the newly added first power control parameter is: reflecting the difference between the transmit power and the transmit power of the original TTI. That is to say, the meaning of introducing the first power control parameter is to adjust the transmission power of the original TTI to meet the needs of different TTI lengths.
  • the original TTI is included in multiple TTIs, and the length of the original TTI is different from the length of time of the TTI.
  • the method for transmitting a signal determines the transmission power corresponding to the time length of the TTI according to the power control formula and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the power control parameter is added to the power control formula of the preset time length, and the transmission power is determined according to the value of the power control parameter.
  • only some internal parameters in the power control formula of the preset time length may be modified to achieve the purpose of adaptively adjusting the transmission power according to the length change of the TTI. This mode will be described below.
  • the power control formula is a second power control formula, where the power control parameter includes a second power control parameter, and the method further includes:
  • control information for indicating a value of the second power control parameter from the second preset value range where the value of the second power control parameter is determined by the base station according to the length of time of the TTI;
  • the first preset value range is at least partially different from the second preset value range, and the first preset value range is applicable to the second power control parameter of the second power control formula of the original TTI, and the original TTI
  • the length of time is different from the length of time of the TTI.
  • the length of the original TTI may be a TTI of the LTE or a TTI of the non-LTE, which is not limited thereto.
  • the length of time of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the terminal obtains a second power control formula, which can be understood as an existing or preset power control formula, and the second power control formula includes a second power control parameter.
  • the terminal may further receive, by the base station, control information for indicating a value of the second power control parameter from the second preset value range, according to the second information indicating the second preset value range.
  • the control information of the value of the power control parameter determines the value of the second power control parameter in the second preset value range. Then, according to the value of the second power control parameter and the second power control formula, the corresponding transmission power is determined, thereby performing signal transmission.
  • the first preset value range is at least partially different from the second preset value range, and the first preset value range is applicable to the second power control parameter of the second power control formula of the original TTI, and the The length of time of the original TTI is different from the length of time of the TTI.
  • the first preset value range is a preset value range of the original TTI
  • the second preset value range is a preset value range of the short TTI.
  • the terminal may change the value range of the second power control parameter in the second power control formula from the first preset value range to the second preset value range.
  • the change may be implemented by the control information from the base station, and the control information is not necessary, that is, the first preset value range and the second preset value range may be specified by a protocol or a protocol version, so that the terminal can Know.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the second power control parameter is: the power of the single resource block RB that the base station expects to receive, or the power of the reference in the single resource block RB that the base station expects to receive, or the single resource block RB that the base station expects to receive Terminal related power.
  • the value of the second power control parameter sent by the base station may be determined from the same value range, or may be determined in different value ranges.
  • the base station can maintain two sets of TTIs. The range of values, such as traditional TTI and shortened TTI, to meet the different needs of the terminal.
  • the base station can also maintain the value range of the multiple TTIs, and deliver the value of the second power control parameter according to the value range of the TTI to meet the needs of the terminal.
  • the terminal directly receives the value of the second power control parameter corresponding to the TTI sent by the base station, and determines the sending power according to the value of the second power control parameter corresponding to the TTI and the second power control formula.
  • the value of the second power control parameter is determined by the base station according to a preset value range of the second power control parameter of the TTI.
  • the second power control formula of the PUCCH channel can be described as:
  • P O_sPUCCH P O_NOMINAL_sPUCCH + P O_UE_sPUCCH , where P O_NOMINAL_sPUCCH ⁇ (A', B'), P O_UE_sPUCCH ⁇ (C', D'), can be set by upper layer signaling.
  • P O_PUCCH P O_NOMINAL_PUCCH + P O_UE_PUCCH , wherein the original parameter P O_NOMINAL_PUCCH ⁇ (A, B) P O_UE_PUCCH ⁇ (C, D) is.
  • the values of P O_NOMINAL_PUCCH and P O_UE_PUCCH are integers and the unit is dB.
  • the parameters ⁇ , ⁇ , ⁇ , and ⁇ are integers related to STTI.
  • the parameters are adjusted by parameters ⁇ , ⁇ , ⁇ , and ⁇ .
  • the value range of the transmit power is determined, and the transmit power corresponding to the STTI is determined, so that the terminal performs signal transmission according to the adjusted transmit power to improve the reliability of the signal transmission.
  • the second power control parameter may be specifically P O_sPUCCH , P O_NOMINAL_sPUCCH or P O_UE_sPUCCH , which is not limited thereto .
  • the first preset value range is:
  • the corresponding second power control parameter may be P O_sPUCCH , P O_NOMINAL_sPUCCH or P O_UE_sPUCCH , where the P O_s PUCCH base station expects to receive the power of the single resource block RB, and the P O_NOMINAL_s PUCCH base station expects to receive
  • the power of the reference in the single resource block RB, P O_UE_sPUCCH is the power associated with the terminal in the single resource block RB that the base station expects to receive.
  • the preset range P O_NOMINAL_PUCCH P O_UE_PUCCH can be expanded and the preset range P O_NOMINAL_PUCCH P O_UE_PUCCH by adjusting the preset power control parameters in the formula, to obtain a predetermined range corresponding to the P O_NOMINAL_sPUCCH and P O_UE_sPUCCH.
  • the first preset value range is P O_NOMINAL_PUCCH ⁇ (A, B) P O_UE_PUCCH ⁇ (C, D), and for the shortened STTI time length, the first preset value range is changed to the first
  • the parameters ⁇ , ⁇ , ⁇ , and ⁇ are integers, which can be set by upper layer signaling.
  • the original first preset value range can be changed to the second preset value range, so that the transmit power of the shortened STTI time length is determined according to the second preset value range.
  • the range P O_NOMINAL_PUCCH and P O_UE_PUCCH thereby expanding the range P O_PUCCH term, to give P O_sPUCCH expanded.
  • the transmission power acquired in the range where the value is large is inevitably larger than the transmission power acquired in the previous small range, so as to improve the PUCCH transmission power.
  • P O_sPUCCH , P O_NOMINAL_sPUCCH or P O_UE_sPUCCH can be regarded as the second power control parameter, and changing the value range of at least one of them can change the second preset value range.
  • the terminal determines the value of the power control parameter by using the second preset value range, and combines the second power control formula to obtain the transmission power of the TTI time length, thereby performing signal transmission.
  • the base station may set the parameters ⁇ , ⁇ , ⁇ , ⁇ to obtain the transmission power of the desired PUCCH channel.
  • the corresponding A', B', C', D' are obtained by the parameters A, B, C, D, and the relationship between them may be in other reasonable manners.
  • the power range can be adjusted as the target) definition or acquisition, which is not limited.
  • the value range of the PUCCH corresponding to the traditional TTI and the value range of the PUCCH corresponding to the shortened TTI may be separately maintained, for example, P O_NOMINAL_PUCCH , P O_UE_PUCCH and P O_NOMINAL_sPUCCH , P O_UE_sPUCCH . That is, the terminal and the base station can adjust the transmission power for different TTI types (preset or shortened TTI) to improve the reliability of signal transmission.
  • first preset value range is at least partially different from the second preset value range
  • second preset value range may be increased or decreased based on the first preset value range, and may be obtained.
  • the range of increasing or decreasing is selected according to actual needs, which is not limited thereto.
  • the terminal can adaptively modify the preset value range based on the length of time of different TTIs, thereby changing the transmission power and transmitting the signal, thereby improving the reliability of the transmission signal.
  • a transmit diversity parameter ⁇ should also be added in the power control formula in the above (b) case.
  • TxD (F') (the meaning of this diversity parameter is mentioned above), as shown in the following formula:
  • the PUCCH channel is used as an example for description, and the embodiments of the present invention are also applicable to the PUSCH channel, the SRS, and other channels. For brevity, details are not described herein.
  • the method for transmitting a signal determines the transmission power corresponding to the time length of the TTI according to the power control formula and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the embodiments of the present invention may be used in combination as long as they are reasonable.
  • the value of the power offset can be combined with the adjustment of the internal parameters of the existing power control formula to determine the transmit power, or the value of the function can be combined with the adjustment of the internal parameters of the existing power control formula. Transmit power, etc.
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, and the method further includes:
  • control information for indicating a value of the third power control parameter where the value of the third power control parameter is determined by the base station according to the length of time of the TTI;
  • the third power control formula is different from the power control formula specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter
  • the current value range of the third power control parameter is selected from a plurality of value ranges.
  • the system can maintain a third power control formula different from that in the LTE system, and the corresponding power control parameter is the third power control parameter.
  • the terminal may also receive control information sent by the base station to indicate a value of the third power control parameter, where the value of the third power control parameter is determined by the base station according to the length of time of the TTI.
  • the control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter.
  • the terminal determines the value of the third power control parameter in the current value range of the third power control parameter according to the control information.
  • the terminal may select a current value range of the third power control parameter among the plurality of value ranges.
  • the base station may select a current value range of the third power control parameter among multiple value ranges.
  • the base station and the terminal may jointly negotiate to select a current value range of the third power control parameter. This is not limited.
  • FIG. 3 shows a schematic flow diagram of a method 300 of transmitting a signal in accordance with an embodiment of the present invention. The method is performed by a base station, as shown in FIG. 3, the method 300 includes:
  • control information of the power control parameter is sent to the terminal, where the control information of the power control parameter is used by the terminal to determine, according to the power control formula, the transmit power of the signal transmission corresponding to the length of the TTI according to the TTI;
  • the base station may determine the control information of the power control parameter according to the time length of the TTI, and then send the control information of the power control parameter to the terminal, so that the terminal determines the transmit power of the TTI, so that the receiving terminal according to the transmit power
  • the signal transmitted by the TTI is used.
  • the base station determines the control information of the power control parameter, and sends the control information of the power control parameter to the terminal, so that the terminal can determine the transmit power of the TTI according to the control information of the power control parameter. Can improve the reliability of signal transmission.
  • the base station determines that the value of the power control parameter may be determined by using a power control formula of a preset or existing TTI, or may be a new power control formula of the new TTI. Increased power control parameters are determined. The difference between the two is that the former is obtained by adjusting the internal parameters of the preset power control formula, and the latter is determined according to the new power control parameters in the power control formula of the new TTI.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and determining control information of the power control parameter according to a time length of the transmission time interval TTI, including:
  • Sending the control information of the power control parameter to the terminal including:
  • control information of the value of the first power control parameter where the control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI; wherein the original TTI is included in multiple TTIs, and the length of the original TTI is different from the length of the TTI
  • the length of time of the original TTI is specified by any of the Long Term Evolution LTE communication protocol versions Release 8 to Release 13.
  • the power control formula is a second power control formula, where the power control parameter includes a second power control parameter, where the control information of the power control parameter is determined according to a time length of the transmission time interval TTI, including :
  • Sending control information of the power control parameter to the terminal including:
  • the first preset value range is applicable to the second power control parameter of the second power control formula of the original TTI, and the time length of the original TTI is different from the time length of the TTI. .
  • the first preset value range is at least partially different from the second preset value range.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, and determining control information of the power control parameter according to a time length of the transmission time interval TTI, including:
  • Sending the control information of the power control parameter to the terminal including:
  • control information of a value of the third power control parameter where the control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter.
  • the third power control formula is different from the power control formula specified by any of the Long Term Evolution LTE communication protocol versions Release 8 to Release 13.
  • the base station determines, according to the length of time of the TTI, a value of the first power control parameter, including:
  • the base station may also determine the value of the first power control parameter, for example, determining the value of the first power control parameter according to the length of the preset time length and the length of the TTI; or, according to the preset time length
  • the number of symbols of the transmitted data or control information and the number of symbols of the transmitted data or control information within the length of the TTI determine the value of the first power control parameter.
  • the base station determines the value of the first power control parameter according to the following formula,
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T s represents the TTI
  • the f represents the first power control parameter
  • the N represents the number of symbols of the data or control information transmitted within the preset time length
  • the N s represents the number of symbols of the data or control information transmitted in the TTI.
  • the base station determines the value of the first power control parameter according to the power control parameter f of the power control formula of the TTI, and sends the value of the first power control parameter to the terminal.
  • the application of the power control formula of the value of the first power control parameter on different physical channels has been enumerated in detail on the terminal side, and is not listed here.
  • the base station determines the TTI according to a correspondence between a time length of the TTI and a power offset.
  • a value of the corresponding power offset, the value of the power offset being a value of the first power control parameter.
  • the base station may determine, according to the preset time length and the time length of the TTI, a first preset value range of the second power control parameter of the preset time length, And a second preset value range of the second power control parameter of the length of the TTI.
  • the first preset value range of the second power control parameter of the preset time length a value of the second power control parameter of the preset time length; and a second power control parameter according to a time length of the TTI
  • Determining a value range determining a value of the second power control parameter of the length of the TTI; and transmitting the value or control information of the second power control parameter to the terminal for the length of the TTI, or The value of the second power control parameter or the control information of the time length is sent to the terminal, so that the terminal determines to change the first preset value range to the second preset value range according to the length of the TTI, or the terminal according to the The length of the TTI selects a value of the corresponding second power control parameter in a preset value range.
  • the first preset value range is at least partially different from the second preset value range, and the first preset value range is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • the base station may also determine a preset value range of the power control parameter of the TTI, and then determine a value of the power control parameter of the TTI according to the preset value range, and control or control the value of the power control parameter.
  • the information is sent to the terminal.
  • the base station may determine a preset value range according to the multiple short TTIs, and then determine the value of the power control parameter of the TTI, and send the value of the power control parameter to the terminal.
  • the base station determines the control information of the power control parameter, and sends the control information of the power control parameter to the terminal, so that the terminal can determine the transmit power of the TTI according to the value of the power control parameter. Can improve the reliability of signal transmission.
  • a method of transmitting a signal according to an embodiment of the present invention is described in detail above, and a terminal and a base station for transmitting a signal according to an embodiment of the present invention will be described below.
  • FIG. 4 shows a schematic block diagram of a terminal 400 in accordance with an embodiment of the present invention.
  • the terminal can be any of the UEs in FIG.
  • the terminal 400 includes:
  • a first determining module 410 configured to determine a TTI for signal transmission from multiple transmission time intervals TTI having different time lengths
  • a second determining module 420 configured to determine, according to a power control formula, a transmit power corresponding to a length of time of the TTI determined by the first determining module 410, where the power control formula includes a power control parameter;
  • the transmitting module 430 is configured to perform the signal transmission on the TTI according to the transmit power determined by the second determining module 420.
  • the terminal in the embodiment of the present invention determines the transmission power corresponding to the time length of the TTI according to the power control formula, and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and the second determining module 420 is specifically configured to:
  • the value of the first power control parameter is determined according to the length of time of the TTI.
  • the second determining module 420 is specifically configured to:
  • the second determining module 420 is specifically configured to:
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T sTTI represents the length of time of the TTI
  • f represents the control parameter of the first power
  • N represents the number of data symbols or control information within the predetermined length transmission time
  • the number of symbols and N s represents data or control information in a TTI length of time of the transmission .
  • the second determining module 420 is specifically configured to:
  • the f represents the first power control parameter
  • the T represents the preset time length
  • the T s represents the length of time of the TTI
  • the f represents the first power control parameter
  • the N represents the number of symbols of the transmission signal or control information within the preset time length
  • the N s represents the number of symbols of the transmission signal or the control information in the TTI.
  • the preset time length is greater than or equal to the TTI, or the preset time length is less than or equal to the TTI, or the preset time length is 1 ms or a preset value different from 1 ms.
  • the second determining module 420 is specifically configured to:
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and the terminal further includes:
  • a receiving module configured to receive, by the base station, control information for indicating a value of the first power control parameter, where the value of the first power control parameter is determined by the base station according to the length of time of the TTI.
  • control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • the first power control parameter reflects a difference between the transmit power and the transmit power of the original TTI; wherein the original TTI is included in multiple TTIs, and the original TTI The length of time is different from the length of time of the TTI.
  • the power control formula is a second power control formula, where the power control parameter includes a second power control parameter, and the terminal further includes:
  • a receiving module configured to receive, by the base station, control information for indicating a value of the second power control parameter from the second preset value range, where the value of the second power control parameter is determined by the base station according to the TTI
  • the time length is determined; wherein the first preset value range is at least partially different from the second preset value range, and the first preset value range is applicable to the second power control of the second power control formula of the original TTI.
  • the parameter, and the length of time of the original TTI is different from the length of time of the TTI.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the second power control parameter is: the power of the single resource block RB that the base station expects to receive, or the power of the common parameter in the single resource block RB that the base station expects to receive, or the base station period The power associated with the terminal in the received single resource block RB.
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, and the terminal further includes:
  • a receiving module configured to receive, by the base station, control information for indicating a value of the third power control parameter, where the value of the third power control parameter is determined by the base station according to the length of time of the TTI;
  • the third power control formula is different from the power control formula specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13.
  • LTE Long Term Evolution
  • control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter
  • the terminal further includes: before receiving, by the base station, control information for indicating a value of the third power control parameter, the terminal further includes:
  • a selection module configured to select a current value range of the third power control parameter from a plurality of value ranges.
  • the terminal 400 may perform the method 200 of transmitting signals according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 400 are respectively implemented in order to implement the respective processes of the foregoing respective methods. Concise, no longer repeat here.
  • the terminal according to the embodiment of the present invention determines the transmission power corresponding to the time length of the TTI according to the power control formula, and performs signal transmission according to the transmission power, thereby improving the reliability of signal transmission.
  • FIG. 4 A terminal according to an embodiment of the present invention has been described above with reference to FIG. 4, which will be described below from the base station side in conjunction with FIG.
  • FIG. 5 shows a schematic block diagram of a base station 500 in accordance with an embodiment of the present invention.
  • the base station 500 includes:
  • a determining module 510 configured to determine a value of the power control parameter according to the transmission time interval TTI;
  • the sending module 520 is configured to send control information of the power control parameter determined by the determining module 510 to the terminal, where the control information of the power control parameter is used by the terminal to determine, according to the power control formula, the time length corresponding to the TTI for the TTI. Transmit power of the signal transmission;
  • the receiving module 530 is configured to receive a signal that the terminal transmits on the TTI according to the transmit power.
  • the base station of the embodiment of the present invention determines the control information of the power control parameter, and sends the control information of the power control parameter to the terminal, so that the terminal can determine according to the value of the power control parameter.
  • the reliability of signal transmission can be improved.
  • the power control formula is a first power control formula, where the power control parameter includes a first power control parameter, and the determining module 510 is specifically configured to:
  • the sending module 520 is configured to:
  • control information of the value of the first power control parameter where the control information is used to indicate a value of the first power control parameter from a current value range of the first power control parameter.
  • the power control formula is a second power control formula, where the power control parameter includes a second power control parameter, and the determining module 510 is specifically configured to:
  • the sending module 520 is specifically configured to:
  • the first preset value range is applicable to the second power control parameter of the second power control formula of the original TTI, and the time length of the original TTI is different from the time length of the TTI.
  • the length of the original TTI is specified by any one of the Long Term Evolution (LTE) communication protocol versions Release 8 to Release 13, or by a communication protocol different from LTE.
  • LTE Long Term Evolution
  • the power control formula is a third power control formula, where the power control parameter includes a third power control parameter, where the third power control formula is different from the Long Term Evolution (LTE) communication protocol version Release 8 to Release 13
  • LTE Long Term Evolution
  • the sending module 520 is specifically configured to:
  • control information of a value of the third power control parameter where the control information is used to indicate a value of the third power control parameter from a current value range of the third power control parameter.
  • the determining module 510 is specifically configured to:
  • the determining module 510 is specifically configured to:
  • the value of the power control parameter is determined according to the following formula,
  • the f represents the power control parameter
  • the T represents the preset time length
  • the T s represents the length of time of the TTI
  • the f represents the power control parameter
  • the N represents the number of symbols of the data or control information transmitted within the preset time length
  • the N s represents the number of symbols of the data or control information transmitted within the time length of the TTI.
  • the determining module 510 is specifically configured to:
  • the terminal 500 may perform the method 300 of transmitting signals according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 500 are respectively implemented in order to implement the respective processes of the foregoing respective methods. Concise, no longer repeat here.
  • the base station in the embodiment of the present invention determines the value of the power control parameter and sends the value of the power control parameter to the terminal, so that the terminal can determine the transmit power of the TTI according to the value of the power control parameter, thereby improving signal transmission. reliability.
  • FIG. 6 shows a structure of a terminal according to still another embodiment of the present invention, including at least one processor 602 (for example, a CPU), at least one network interface 605 or other communication interface, a memory 606, and at least one communication bus 603. To achieve connection communication between these devices.
  • the processor 602 is configured to execute executable modules, such as computer programs, stored in the memory 606.
  • the memory 606 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 605 (which may be wired or wireless).
  • the memory 606 stores a program 6061
  • the processor 602 executes the program 6061 for performing the method on the terminal side of the transmission signal of the foregoing embodiment of the present invention.
  • FIG. 7 shows a structure of a base station according to still another embodiment of the present invention, including at least one processor 702 (for example, a CPU), at least one network interface 705 or other communication interface, a memory 706, and at least one communication bus 703. To achieve connection communication between these devices.
  • Processor 702 An executable module, such as a computer program, for executing storage in memory 706.
  • the memory 706 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 705 (which may be wired or wireless).
  • the memory 706 stores a program 7061
  • the processor 702 executes the program 7061 for performing the method of the base station side of the transmission signal of the foregoing embodiment of the present invention.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be directed to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • 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 unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Or it can be distributed to multiple network elements. 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 invention 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 invention 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
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un terminal, un procédé d'émission de signal et une station de base. Le procédé consiste : à déterminer, parmi des intervalles de temps d'émission (TTI) multiples présentant des longueurs différentes, un TTI pour une émission de signal ; à déterminer, conformément à une formule de commande de puissance et pour le TTI, une puissance d'émission correspondant à la longueur du TTI, la formule de commande de puissance comprenant un paramètre de commande de puissance ; et à réaliser, en fonction de la puissance d'émission, l'émission de signal dans le TTI. Dans des modes de réalisation de la présente invention, le procédé d'émission de signal, le terminal et la station de base permettent d'améliorer la fiabilité d'une émission de signal.
PCT/CN2016/081861 2016-05-12 2016-05-12 Terminal, procédé d'émission de signal et station de base WO2017193332A1 (fr)

Priority Applications (1)

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PCT/CN2016/081861 WO2017193332A1 (fr) 2016-05-12 2016-05-12 Terminal, procédé d'émission de signal et station de base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/081861 WO2017193332A1 (fr) 2016-05-12 2016-05-12 Terminal, procédé d'émission de signal et station de base

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022812A2 (fr) * 2007-08-10 2009-02-19 Samsung Electronics Co., Ltd. Appareil et méthode de gestion de canaux dédiés aux liaisons ascendantes dans un système mobile de communication
CN101572944A (zh) * 2008-04-29 2009-11-04 华为技术有限公司 随机接入中资源选择方法和终端设备
US20120257686A1 (en) * 2011-04-11 2012-10-11 Infineon Technologies Ag Method for transmitting a signal
CN105407524A (zh) * 2015-10-30 2016-03-16 上海华为技术有限公司 Phr的发送方法和用户终端
CN105556888A (zh) * 2013-09-23 2016-05-04 高通股份有限公司 Lte-u上行链路波形和可变多子帧调度

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022812A2 (fr) * 2007-08-10 2009-02-19 Samsung Electronics Co., Ltd. Appareil et méthode de gestion de canaux dédiés aux liaisons ascendantes dans un système mobile de communication
CN101572944A (zh) * 2008-04-29 2009-11-04 华为技术有限公司 随机接入中资源选择方法和终端设备
US20120257686A1 (en) * 2011-04-11 2012-10-11 Infineon Technologies Ag Method for transmitting a signal
CN105556888A (zh) * 2013-09-23 2016-05-04 高通股份有限公司 Lte-u上行链路波形和可变多子帧调度
CN105407524A (zh) * 2015-10-30 2016-03-16 上海华为技术有限公司 Phr的发送方法和用户终端

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