WO2017193996A1 - 一种上行共享信道的导频传输方法及相关设备 - Google Patents

一种上行共享信道的导频传输方法及相关设备 Download PDF

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Publication number
WO2017193996A1
WO2017193996A1 PCT/CN2017/084132 CN2017084132W WO2017193996A1 WO 2017193996 A1 WO2017193996 A1 WO 2017193996A1 CN 2017084132 W CN2017084132 W CN 2017084132W WO 2017193996 A1 WO2017193996 A1 WO 2017193996A1
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WIPO (PCT)
Prior art keywords
pilot
terminal
comb structure
shared channel
uplink shared
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Ceased
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PCT/CN2017/084132
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English (en)
French (fr)
Inventor
高雪娟
刘松涛
潘学明
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to KR1020187034825A priority Critical patent/KR102198619B1/ko
Priority to US16/301,437 priority patent/US10757662B2/en
Priority to EP17795614.1A priority patent/EP3457768B1/en
Priority to JP2018560020A priority patent/JP6731498B2/ja
Publication of WO2017193996A1 publication Critical patent/WO2017193996A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a pilot transmission method and related device for an uplink shared channel.
  • the existing Long Term Evolution (LTE) Frequency Division Duplex (FDD) system uses Frame Structure Type 1, referred to as FS1.
  • FS1 Frequency Division Duplex
  • the uplink and downlink transmissions use different carrier frequencies, and the uplink and downlink transmissions use the same frame structure.
  • Figure 1 shows the structure of FS1.
  • a 10ms-length radio frame contains 10 1ms subframes. Each subframe is divided into two 0.5ms-length slots, and uplink and downlink data are sent.
  • the Transmission Time Interval (TTI) is 1 ms.
  • the existing LTE Time Division Duplex (TDD) system uses Frame Structure Type 2 (FS2).
  • FS2 Frame Structure Type 2
  • uplink and downlink transmissions use different subframes or different time slots on the same frequency.
  • Figure 2 shows the structure of the FS2.
  • Each 10 ms length radio frame in FS2 consists of two 5 ms length half frames, each of which contains five 1 ms length subframes.
  • the sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames.
  • Each special sub-frame consists of Downlink Pilot Time Slot (DwPTS) and Guard Period (Guard Period, GP) and Uplink Pilot Time Slot (UpPTS) are composed of three parts.
  • DwPTS Downlink Pilot Time Slot
  • Guard Period Guard Period
  • UpPTS Uplink Pilot Time Slot
  • the DwPTS can be used to transmit downlink pilot, downlink service data, and downlink control signaling; the GP does not transmit any signal; the UpPTS can only be used to transmit random access signals and Sounding Reference Symbols (SRS), which cannot be used for transmission.
  • SRS Sounding Reference Symbols
  • Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. Table 7 lists the seven uplink and downlink subframe configurations supported by FS2.
  • the structure of the LTE physical uplink shared channel (PUSCH) in one subframe and the pilot (ie, reference symbol or Demodulation Reference Signal (DMRS) for data demodulation) are shown in Figure 3a. And Figure 3b.
  • the pilot ie, reference symbol or Demodulation Reference Signal (DMRS) for data demodulation
  • FIG. 3a under the conventional Cyclic Prefix (CP), the 4th symbol in each slot of each subframe is used to transmit pilots, and the remaining symbols except the 4th symbol are used. transfer data.
  • the third symbol in each slot of each subframe is used to transmit pilots, and the remaining symbols except the third symbol are used to transmit data.
  • the uplink pilot is a terminal-specific pilot, which is generated according to the actual bandwidth scheduled by the PUSCH.
  • each column of pilots can implement multiple terminals sharing the same resource by cyclically shifting the same pilot base sequence.
  • the existing channel transmission is defined in units of subframes.
  • the DMRS structure designed for the 1 ms subframe in the LTE system can be reused, in one subframe.
  • the short data transmission can share the same time domain location transmission DMRS, wherein the short data transmission is defined as a data transmission with a time domain length shorter than 1 ms.
  • multiple PUSCHs have independent scheduling information, and the scheduling bandwidth of each scheduling information may only partially overlap.
  • multiple short data transmissions may be performed by means of a comb structure.
  • the pilot sequences are frequency division multiplexed and transmitted in the same resource region to ensure correct transmission and demodulation of uplink data. This method guarantees the sharing of DMRS resources of multiple terminals, but there is no clear solution for determining the transmit power of DMRS.
  • the embodiment of the invention provides a pilot transmission method and related device for an uplink shared channel, which is used to solve the problem by comb
  • the structured way is to determine the pilot transmit power problem when the pilot sequences of multiple short data transmissions are frequency division multiplexed in the same resource region.
  • an embodiment of the present invention provides a pilot transmission method for an uplink shared channel, including:
  • the terminal determines a transmit power of data carried by the uplink shared channel
  • the terminal Determining, by the terminal, the transmit power of the pilot of the uplink shared channel according to the transmit power of the data carried by the uplink shared channel and the pilot power boosting factor of the terminal, where the pilot power boosting factor is used And a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, where the multiple is greater than or equal to 1, the pilot Transmitting in a time domain symbol occupied by pilots in a comb structure;
  • the terminal transmits the pilot of the uplink shared channel according to the transmit power of the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the method when the pilot power boosting factor of the terminal is configured by the network side to the terminal by using the high layer signaling, the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a pilot transmission method for an uplink shared channel, including:
  • the base station determines, by the terminal, the transmit power of the data carried by the uplink shared channel
  • the base station Determining, by the base station, the transmit power of the pilot that sends the uplink shared channel according to the transmit power of the data carried by the uplink shared channel of the terminal and the pilot power boosting factor of the terminal, where
  • the pilot power boosting factor is used to indicate a multiple of a transmit power of a pilot of the uplink shared channel on a resource unit relative to a transmit power of a data carried by the uplink shared channel on a resource unit, where the multiple is greater than Or equal to 1, the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the method when the pilot power boosting factor of the terminal is configured by the network side to the terminal by using the high layer signaling, the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a terminal, including:
  • a first processing module configured to determine a transmit power of data carried by the uplink shared channel
  • a second processing module configured to determine, according to a transmit power of data carried by the uplink shared channel and a pilot power boosting factor of the terminal, a transmit power of a pilot of the uplink shared channel, where the pilot power
  • the lifting factor is used to indicate that the transmit power of the pilot of the uplink shared channel is a multiple of the transmit power of the data carried by the uplink shared channel on a resource unit, and the multiple is greater than or equal to 1,
  • the pilot is transmitted in a comb structure in a time domain symbol occupied by a pilot;
  • a sending module configured to send, according to the transmit power of the pilot, a pilot of the uplink shared channel.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the method when the pilot power boosting factor of the terminal is configured by the network side to the terminal by using the high layer signaling, the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a base station, including:
  • a first processing module configured to determine, by the terminal, a transmit power of data carried by the uplink shared channel
  • a second processing module configured to determine, according to a transmit power of data carried by the uplink shared channel of the terminal and a pilot power boosting factor of the terminal, a transmit power of a pilot that sends the uplink shared channel by the terminal
  • the pilot power boosting factor is used to indicate a multiple of a transmit power of a pilot of the uplink shared channel on a resource unit relative to a transmit power of a data carried by the uplink shared channel on a resource unit, The multiple is greater than or equal to 1, and the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the pilot power boosting factor of the terminal when configured by the network side through high layer signaling, it specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a terminal, including a processor, a memory, and a transceiver, where the transceiver is configured to receive and transmit data under the control of the processor, and the preset program is stored in the memory.
  • the processor is used to read a program in the memory, and the following process is performed according to the program:
  • a transmit power of a pilot of the uplink shared channel Determining, according to a transmit power of data carried by the uplink shared channel and a pilot power boosting factor of the terminal, a transmit power of a pilot of the uplink shared channel, where the pilot power boost factor is used to indicate the And a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, the multiple is greater than or equal to 1, and the pilot is in a comb shape
  • the structure is transmitted in the time domain symbol occupied by the pilot;
  • the pilot of the uplink shared channel is transmitted by the transceiver according to the transmit power of the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the method when the pilot power boosting factor of the terminal is configured by the network side to the terminal by using the high layer signaling, the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a base station, including a processor and a memory, where a preset program is stored in the memory, and the processor is configured to read a program in the memory, and execute the following process according to the program:
  • a transmit power of a pilot that sends the uplink shared channel by the terminal, where the pilot
  • the power boosting factor is used to indicate a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, where the multiple is greater than or equal to 1
  • the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the data of the uplink shared channel. Transmit power.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or the network side and the terminal are agreed by a protocol, or comb according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the structure transmission is determined by the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the method when the pilot power boosting factor of the terminal is configured by the network side to the terminal by using the high layer signaling, the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor is the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the terminal of the time domain symbol is multiplexed in a comb structure.
  • the number is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side through high layer signaling.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • the terminal determines, according to the transmit power of the data carried by the uplink shared channel and the pilot power boosting factor of the terminal, the transmit power of the pilot of the uplink shared channel, where the pilot power of the terminal is defined.
  • the boosting factor uplink shared channel pilot transmits power on one resource unit with respect to a multiple of the transmit power of the data carried by the uplink shared channel on one resource unit, and defines the multiple to be greater than or equal to 1, thereby passing through the comb structure
  • how to determine the pilot transmission power provides a solution, and can improve the pilot transmission power through the pilot transmission power. Improve the accuracy of channel estimation with reduced density.
  • Figure 1 is a schematic structural view of FS1
  • FIG. 2 is a schematic structural view of FS2
  • 3a is a schematic diagram of data and pilot structure of a PUSCH in a subframe under a conventional CP
  • FIG. 3b is a schematic diagram of data and pilot structure of a PUSCH in one subframe under an extended CP
  • FIG. 4 is a schematic flowchart of a method for performing pilot transmission of an uplink shared channel by a terminal side according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for performing pilot transmission of an uplink shared channel by a base station side according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a comb mapping manner when a frequency domain mapping interval or a frequency domain mapping density or a number of terminals in which a same time domain symbol is multiplexed in a comb structure is 2;
  • FIG. 7 is a schematic diagram of a comb mapping manner when a frequency domain mapping interval or a frequency domain mapping density or a number of terminals in which a same time domain symbol is multiplexed in a comb structure is 3;
  • FIG. 8 is a schematic diagram of a comb mapping manner when a frequency domain mapping interval or a frequency domain mapping density or a number of terminals in which a same time domain symbol is multiplexed in a comb structure is 4;
  • FIG. 9 is a schematic diagram of a comb mapping manner when a frequency domain mapping interval or a frequency domain mapping density or a number of terminals in which a same time domain symbol is multiplexed in a comb structure is 6;
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • the user equipment includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a mobile phone (handset). And portable devices, etc., 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"
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or "cellular"
  • the telephone device, the computer with wireless communication function, etc., the user equipment can also be a mobile device that is portable, pocket-sized, handheld, built-in, or in-vehicle.
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station
  • LTE Long Term Evolutional Node B
  • short data transmission especially short data transmission with a length less than 0.5 ms
  • the DMRS time domain density is reduced relative to 1 ms data transmission. It will affect the time domain interpolation performance, and the anti-interference performance is also reduced relative to the 2-column DMRS transmission, resulting in a decrease in channel estimation performance of short data transmission.
  • the present invention proposes a DMRS power boosting scheme based on the comb structure transmission DMRS to improve the channel estimation performance of short data transmission.
  • the comb structure is that the pilot frequency is transmitted according to the initial frequency domain location, and the frequency domain mapping interval or the frequency domain mapping density or the pilot multiplexing factor.
  • the core idea of the present invention is that when a DMRS is transmitted in a comb structure, only a part of resource elements (RE elements) on one SC-FDMA symbol are used to transmit a DMRS of one UE. Therefore, the power of each DMRS RE can be enhanced under the premise that the total transmit power of the DMRS SC-FDMA symbol does not exceed the total transmit power of one data SC-FDMA. As the DMRS density decreases, increasing the power of each DMRS RE is beneficial to improve channel estimation performance.
  • RE elements resource elements
  • the detailed method for performing pilot transmission of the uplink shared channel on the terminal side is as follows:
  • Step 401 The terminal determines a transmit power of data carried by the uplink shared channel.
  • the transmission time interval of the uplink shared channel is less than 1 millisecond.
  • the transmit power of the data carried by the uplink shared channel may be notified by the base station to the terminal, or may be agreed by the base station and the terminal by using a protocol.
  • Step 402 The terminal determines, according to the transmit power of the data carried by the uplink shared channel and the pilot power boosting factor of the terminal, the transmit power of the pilot of the uplink shared channel, where the pilot power boost factor is used to indicate the guide of the uplink shared channel.
  • the transmission power of the frequency on one resource unit is a multiple of the transmission power of the data carried by the uplink shared channel on one resource unit, the multiple is greater than or equal to 1, and the pilot is in a comb structure in the time domain symbol occupied by the pilot. transmission.
  • the sum of the transmit powers of the pilots of the uplink shared channel on the resource elements used for pilot transmission in the time domain symbols occupied by the pilots is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal has multiple ways of obtaining, including but not limited to the following:
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal through high layer signaling.
  • the high-level signaling configures a pilot power boosting factor; or, the high-layer signaling configures multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency domain mapping of a pilot transmitted in a comb structure. Interval or frequency domain mapping density or number of terminals that reuse time domain symbols in a comb structure.
  • K pilot power boosting factors are pre-agreed in the system, expressed as ⁇ n1, n2, ... nk ⁇ ,
  • the high-level signaling of the bits informs one of the K pilot power boosting factors to the terminal, and the terminal calculates the uplink shared channel based on the received pilot power boosting factor based on the transmit power of the data carried by the uplink shared channel in one RE.
  • the pilot can be transmitted at a RE power.
  • one of the pre-agreed K pilot power boost factors indicates that no power boost is performed.
  • the pilot power boosting factor of the terminal is agreed by the network side and the terminal through a protocol.
  • the network side and the terminal stipulate a pilot power boosting factor by using the protocol.
  • the method is to predefine a pilot power boost factor, that is, the pilot power boost factor is used in any case.
  • a pilot power boosting factor is agreed for a frequency domain mapping interval or a frequency domain mapping density of each pilot transmitted in a comb structure or a number of terminals multiplexing the same time domain symbol in a comb structure.
  • the predefined pilot power boosting factor is n1.
  • n1 does not exceed 2 (indicating that the power in the linear domain is directly increased by a factor of 2, the explanation below is similar) or does not exceed 3 dB (indicating that the power in the dB domain is increased by 3 dB, the following explanation is similar).
  • the predefined pilot power boost factor is n2 when the frequency domain mapping interval or frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is 3.
  • n2 does not exceed 3 or does not exceed 4.77 dB.
  • the predefined pilot power boost factor is n3 when the frequency domain mapping interval or frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is 4.
  • n3 does not exceed 4 or does not exceed 6 dB.
  • the predefined pilot power boost factor is n4 when the frequency domain mapping interval or frequency domain mapping density of the pilot transmitted in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is 6.
  • n4 does not exceed 6 or does not exceed 7.78 dB.
  • the terminal determines a pilot power boosting factor according to a frequency domain mapping interval in which the pilot transmits in a comb structure.
  • the terminal determines the pilot power boost factor according to the frequency domain mapping density of the pilot transmitted in the comb structure.
  • the terminal determines a pilot power boosting factor according to the number of terminals that multiplex the same time domain symbol in a comb structure.
  • the pilot power boost factor is determined to be 2 or 3dB. If the terminal determines the frequency domain mapping interval or the frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is 3, the pilot power boost factor is determined to be 3 or 4.77 dB. . If the terminal determines the frequency domain mapping interval or the frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is 4, The fixed pilot power boost factor is 4 or 6 dB.
  • the pilot power boost factor is determined to be 6 or 7.78 dB. .
  • the maximum value of the pilot power boosting factor is proportional to the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in the comb structure or the number of terminals of the time domain symbol multiplexed in the comb structure.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the time domain symbols in the comb structure is configured by the network side to the terminal through high layer signaling, or by the network side and The terminal is agreed by the agreement.
  • the number of terminals multiplexing the time domain symbols in a comb structure may also be represented by a pilot multiplexing factor, where the pilot multiplexing factor is defined as different pilot sequences simultaneously transmitted by frequency division multiplexing in the same time domain symbol. The number.
  • Step 403 The terminal sends the pilot of the uplink shared channel according to the transmit power of the pilot.
  • the terminal transmits the pilot of the uplink shared channel according to the transmit power of the pilot of the uplink shared channel determined in step 402.
  • the detailed method for performing the pilot transmission of the uplink shared channel by the base station side is as follows:
  • Step 501 The base station determines, by the terminal, the transmit power of the data carried by the uplink shared channel.
  • the transmission time interval of the uplink shared channel is less than 1 millisecond.
  • Step 502 The base station determines, according to the transmit power of the data carried by the uplink shared channel of the terminal and the pilot power boosting factor of the terminal, the transmit power of the pilot that sends the uplink shared channel, where the pilot power boost factor is used to indicate
  • the transmit power of the pilot of the uplink shared channel on a resource unit is a multiple of the transmit power of the data carried by the uplink shared channel on one resource unit, the multiple is greater than or equal to 1, and the pilot is occupied by the pilot in a comb structure.
  • the time domain symbol is transmitted.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal through the high layer signaling, or the protocol is agreed by the network side and the terminal, or the frequency domain mapping interval or the frequency domain is transmitted according to the pilot in a comb structure.
  • the mapping density or the number of terminals that multiplex the same time domain symbol in a comb structure is determined.
  • the high-level signaling configures a pilot power boosting factor; or, the high-layer signaling configures multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency in which the pilot is transmitted in a comb structure.
  • a pilot power boosting factor may be agreed; or a frequency domain mapping interval or a frequency domain in which each pilot is transmitted in a comb structure. Mapping density or A pilot power boosting factor is agreed by the number of terminals multiplexing the time domain symbols in a comb structure.
  • the maximum value of the pilot power boosting factor is the same as the frequency domain mapping interval or the frequency domain mapping density of the pilot transmission in the comb structure or the same in the comb structure.
  • the number of terminals in the time domain symbol is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmission in the comb structure or the number of terminals multiplexing the same time domain symbol in the comb structure is configured by the network side to the terminal through high layer signaling, or by the network The side and the terminal are agreed by the agreement.
  • the frequency domain mapping interval or the frequency domain mapping density or the number of terminals multiplexing the same time domain symbol in a comb structure, respectively, the comb mapping manners of 2, 3, 4, and 6 respectively are as shown in FIG. 6 ⁇ Figure 9.
  • the mapping of pilots in a basic unit of the frequency domain is taken as an example.
  • the basic units of multiple frequency domains are in the same way, the basic unit of each frequency domain is mapped in the same way.
  • the basic unit of one frequency domain is assumed to be consecutive in the frequency domain.
  • the subcarriers, other frequency domain basic unit sizes, and pilot mapping methods are similar.
  • the pilot power boost factor is configured for higher layer signaling.
  • the frequency domain mapping interval or frequency domain mapping density of pilots in the system is pre-agreed or the number of terminals multiplexing the same time domain symbol in a comb structure is 4, and it is assumed that one terminal has three DMRSs in one frequency domain basic unit.
  • RE assuming that the maximum value of the total power of the pilot SC-FDMA symbol is the same as the power of the data SC-FDMA symbol, the power of the pilot on a single SC-FDMA can be increased by up to 6 dB.
  • the power boost factor 0 corresponds to the power not increasing
  • the pilot power boost factor 6 corresponds to the maximum boost value of the power.
  • the power of the RE defined for PUSCH data transmission is E Data_RE .
  • the pilot power boost factor can also be directly defined as a multiple of the transmit power of the DMRS RE relative to the transmit power of the data RE.
  • the set of pilot power boost factor n is defined as ⁇ 1, 2, 3, 4 ⁇ , through 2
  • the bit high layer signaling notifies one of the four power boosting factors to the terminal, where the corresponding power is not increased, and the transmitting power of the corresponding DMRS RE is four times the transmitting power of the data RE, and the terminal notifies according to the received high layer signaling.
  • the pilot power boost factor is predefined
  • the frequency domain mapping interval or frequency domain mapping density of pilots in the system is pre-agreed or the number of terminals multiplexing the same time domain symbols in a comb structure is 4, assuming that one terminal has three DMRS REs in one frequency domain basic unit.
  • the maximum value of the total power of the pilot SC-FDMA symbol is the same as the power of the data SC-FDMA symbol, the power of the pilot on a single SC-FDMA can be increased by up to 6 dB.
  • the pilot power boosting factors corresponding to different frequency domain mapping intervals are predefined, and the power of the REs defined for PUSCH data transmission is E Data_RE .
  • a uniform pilot power boosting factor is predefined for the frequency domain mapping interval or the frequency domain mapping density of all pilots or the number of terminals multiplexing the same time domain symbol in a comb structure.
  • the minimum pilot frequency domain mapping interval or frequency domain mapping density or the number of terminals multiplexing the same time domain symbol in the comb structure is 2
  • the maximum value of the total power of the pilot SC-FDMA symbol is assumed to be the data-FDMA. If the power of the symbol is the same, the power of the pilot on a single SC-FDMA can be increased by up to 6 dB.
  • n 10 n/10 ⁇ E Data_RE .
  • the pilot power boosting factor is determined according to a frequency domain mapping interval of the pilot or a frequency domain mapping density or a pilot multiplexing factor.
  • the pilot reuse factor is the number of terminals that multiplex the same time domain symbol in a comb structure.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot in the system is pre-agreed or the number of terminals multiplexing the same time domain symbol in the comb structure is M
  • the power of the pilot on a single SC-FDMA can be increased by up to 10 log 10 MdB.
  • Table 2 is established according to the maximum boostable power. Table 2 shows the frequency domain mapping interval or frequency domain mapping density of the pilot or is multiplexed in a comb structure. The mapping relationship between the number of terminals in the same time domain symbol and the pilot power boost factor.
  • the power of the RE for PUSCH data transmission is defined as E Data_RE
  • the terminal multiplexes the same time domain according to the frequency domain mapping interval or the frequency domain mapping density notified by the received high layer signaling or in a comb structure.
  • the number of terminals of the symbol obtains the pilot power boost factor n
  • the pilot power boosting factor may also be directly defined as a multiple of the transmit power of the DMRS RE relative to the transmit power of the data RE, as shown in Table 3, the frequency domain mapping interval or the frequency domain mapping density of the pilot or the comb structure.
  • Table 3 the frequency domain mapping interval or the frequency domain mapping density of the pilot or the comb structure.
  • E DMRS_RE n ⁇ E Data_RE .
  • the embodiment of the present invention provides a terminal.
  • the terminal mainly includes:
  • the first processing module 1001 is configured to determine a transmit power of data carried by the uplink shared channel.
  • the second processing module 1002 is configured to determine, according to a transmit power of data carried by the uplink shared channel and a pilot power boosting factor of the terminal, a transmit power of a pilot of the uplink shared channel, where the pilot
  • the power boosting factor is used to indicate a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, where the multiple is greater than or equal to 1
  • the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot;
  • the sending module 1003 is configured to send, according to the transmit power of the pilot, a pilot of the uplink shared channel.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or is agreed by the network side and the terminal by a protocol, or a comb structure according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the transmission or the number of terminals multiplexing the same time domain symbol in a comb structure is determined.
  • the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • a maximum value of the pilot power boosting factor and a frequency domain mapping interval or a frequency domain mapping density of the pilot transmitted in a comb structure or a number of terminals multiplexing the time domain symbol in a comb structure In direct proportion.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side by using high layer signaling to The terminal, or the network side and the terminal, agree by agreement.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • an embodiment of the present invention provides a base station.
  • the base station mainly includes:
  • the first processing module 1101 is configured to determine, by the terminal, the transmit power of the data carried by the uplink shared channel;
  • the second processing module 1102 is configured to determine, according to a transmit power of the data carried by the uplink shared channel of the terminal, and a pilot power boosting factor of the terminal, to transmit, by the terminal, the pilot of the uplink shared channel.
  • Power wherein the pilot power boosting factor is used to indicate a multiple of a transmit power of a pilot of the uplink shared channel on a resource unit relative to a transmit power of data carried by the uplink shared channel on a resource unit.
  • the multiple is greater than or equal to 1, and the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or is agreed by the network side and the terminal by a protocol, or a comb structure according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the transmission or the number of terminals multiplexing the same time domain symbol in a comb structure is determined.
  • the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • a maximum value of the pilot power boosting factor and a frequency domain mapping interval or a frequency domain mapping density of the pilot transmitted in a comb structure or a number of terminals multiplexing the time domain symbol in a comb structure In direct proportion.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side by using high layer signaling to The terminal, or the network side and the terminal, agree by agreement.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • the terminal mainly includes processing.
  • the transceiver 1203 is configured to receive and transmit data under the control of the processor 1201, the memory 1202 stores a preset program, and the processor 1201 is configured to read the memory 1202. Program, according to the program to perform the following process:
  • a transmit power of a pilot of the uplink shared channel Determining, according to a transmit power of data carried by the uplink shared channel and a pilot power boosting factor of the terminal, a transmit power of a pilot of the uplink shared channel, where the pilot power boost factor is used to indicate the And a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, the multiple is greater than or equal to 1, and the pilot is in a comb shape
  • the structure is transmitted in the time domain symbol occupied by the pilot;
  • the pilot of the uplink shared channel is transmitted by the transceiver 1203 according to the transmit power of the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or is agreed by the network side and the terminal by a protocol, or a comb structure according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the transmission or the number of terminals multiplexing the same time domain symbol in a comb structure is determined.
  • the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the frequency domain mapping density or the number of terminals multiplexing the time domain symbols in a comb structure stipulates a pilot power boost factor.
  • a maximum value of the pilot power boosting factor and a frequency domain mapping interval or a frequency domain mapping density of the pilot transmitted in a comb structure or a number of terminals multiplexing the time domain symbol in a comb structure In direct proportion.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side by using high layer signaling to The terminal, or the network side and the terminal, agree by agreement.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • a base station is also provided in the embodiment of the present invention.
  • the base station mainly includes processing.
  • the device 1301 is configured to receive and transmit data under the control of the processor 1301, the memory 1302 stores a preset program, and the processor 1301 is configured to read the memory 1302. Program, according to the program to perform the following process:
  • a transmit power of a pilot that sends the uplink shared channel by the terminal, where the pilot
  • the power boosting factor is used to indicate a multiple of the transmit power of the pilot of the uplink shared channel on a resource unit relative to the transmit power of the data carried by the uplink shared channel on a resource unit, where the multiple is greater than or equal to 1
  • the pilot is transmitted in a comb structure in a time domain symbol occupied by the pilot.
  • the sum of the transmit power of the pilot of the uplink shared channel on the resource unit of the pilot transmission in the time domain symbol occupied by the pilot is not greater than the transmit power of the data of the uplink shared channel.
  • the pilot power boosting factor of the terminal is configured by the network side to the terminal by using high layer signaling, or is agreed by the network side and the terminal by a protocol, or a comb structure according to the pilot.
  • the frequency domain mapping interval or the frequency domain mapping density of the transmission or the number of terminals multiplexing the same time domain symbol in a comb structure is determined.
  • the method specifically includes:
  • the high-layer signaling is configured with a pilot power boosting factor, or the high-layer signaling is configured with multiple pilot power boosting factors, where each pilot power boosting factor corresponds to a frequency of one of the pilots transmitted in a comb structure.
  • the method specifically includes:
  • the maximum value of the pilot power boosting factor and the frequency domain mapping interval of the pilot transmission in a comb structure is proportional.
  • the frequency domain mapping interval or the frequency domain mapping density of the pilot transmitted in a comb structure or the number of terminals multiplexing the time domain symbols in a comb structure is configured by the network side by using high layer signaling to The terminal, or the network side and the terminal, agree by agreement.
  • the uplink shared channel has a transmission time interval TTI less than 1 millisecond.
  • the processor, the memory and the transceiver are connected by a bus, and the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors and memories represented by the processor.
  • the various circuits representing the memory are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • the terminal determines, according to the transmit power of the data carried by the uplink shared channel and the pilot power boosting factor of the terminal, the transmit power of the pilot of the uplink shared channel, where the pilot power of the terminal is defined.
  • the boosting factor uplink shared channel pilot transmits power on one resource unit with respect to a multiple of the transmit power of the data carried by the uplink shared channel on one resource unit, and defines the multiple to be greater than or equal to 1, thereby passing through the comb structure
  • how to determine the pilot transmission power provides a solution, and can improve the pilot transmission power through the pilot transmission power. Improve the accuracy of channel estimation with reduced density.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include instructions.
  • the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明公开了一种上行共享信道的导频传输方法及相关设备，用以解决通过梳状结构的方式将多个短数据传输的导频序列在相同资源区域中频分复用传输情况下，如何确定导频发射功率的问题。方法为：终端确定上行共享信道承载的数据的发射功率；终端根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，倍数大于或等于1，导频以梳状结构在导频占用的时域符号中传输；终端按照所述导频的发射功率发送上行共享信道的导频。

Description

一种上行共享信道的导频传输方法及相关设备
本申请要求在2016年5月13日提交中国专利局、申请号为201610319785.8、发明名称为“一种上行共享信道的导频传输方法及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种上行共享信道的导频传输方法及相关设备。
背景技术
一、现有LTE帧结构(LTE Rel-8/9/10/11/12/13)
现有的长期演进(Long Term Evolution，LTE)频分双工(Frequency Division Duplex，FDD)系统使用帧结构类型1(Frame Structure Type 1,简称FS1)。在FDD系统中，上行和下行传输使用不同的载波频率，上行和下行传输使用相同的帧结构。如图1所示为FS1的结构示意图，在每个载波上，一个10ms长度的无线帧包含有10个1ms子帧，每个子帧分为两个0.5ms长度的时隙，上行和下行数据发送的发送时间间隔(Transmission Time Interval，TTI)为1ms。
现有的LTE时分双工(Time Division Duplex，TDD)系统使用帧结构类型2(Frame Structure Type 2，简称FS2)。在TDD系统中，上行和下行传输使用相同频率上的不同子帧或不同时隙。如图2所示为FS2的结构示意图。FS2中每个10ms长度的无线帧由两个5ms长度的半帧构成，每个半帧包含5个1ms长度的子帧。FS2中的子帧分为三类，分别为：下行子帧、上行子帧和特殊子帧，每个特殊子帧由下行传输时隙(Downlink Pilot Time Slot，DwPTS)、保护间隔(Guard Period，GP)和上行传输时隙(Uplink Pilot Time Slot，UpPTS)三部分构成。其中，DwPTS可用于传输下行导频、下行业务数据和下行控制信令；GP不传输任何信号；UpPTS仅可用于传输随机接入信号和探测参考信号(Sounding Reference Symbol，SRS)，不能用于传输上行业务或上行控制信息。每个半帧中包含至少1个下行子帧和至少1个上行子帧，以及最多1个特殊子帧。FS2中支持的7种上下行子帧配置方式如表1所示。
表1：上下行配置
Figure PCTCN2017084132-appb-000001
二、现有LTE系统的PUSCH的DMRS设计
LTE物理上行共享信道(Physical Uplink Shared Channel，PUSCH)在一个子帧内的数据和导频(即参考符号或用于数据解调的解调参考信号(Demodulation Reference Signal，DMRS))结构如图3a和图3b所示。如图3a所示，在常规循环前缀(Cyclic Prefix，CP)下，每个子帧的每个时隙中的第4个符号用于传输导频，除第4个符号之外的其余符号用于传输数据。如图3b所示，在扩展CP下，每个子帧的每个时隙中的第3个符号用于传输导频，除第3个符号之外的其余符号用于传输数据。上行导频为终端专属的导频，按照PUSCH所调度的实际带宽的大小产生。DMRS的发射功率与数据的发射功率相同。为了支持上行多用户多输入多输出(Mutli User-Multiple Input Multiple Output，MU-MIMO)，每列导频可以通过对同一个导频基序列进行循环移位来实现对共享相同资源的多个终端的导频的正交传输，从而使接收端可以通过循环移位区分不同终端的导频信息。
随着移动通信业务需求的发展变化，业务的实时性要求越来越高。降低TTI长度是缩短时延的有效方法之一。
在LTE系统中，现有的信道传输都是以子帧为单位来定义的，当采用短于1ms的TTI传输PUSCH时，可以重用LTE系统中对1ms子帧设计的DMRS结构，一个子帧中的短数据传输可以共享同一个时域位置传输DMRS，其中，定义短数据传输为时域长度短于1ms的数据传输。但多个PUSCH具有独立的调度信息，各调度信息的调度带宽可能仅部分重叠，为了保证不同短数据传输的DMRS在同一个符号上可以区分，可以通过梳状结构的方式将多个短数据传输的导频序列在相同资源区域中频分复用传输，以保证上行数据的正确传输和解调。该方法保证了多个终端DMRS资源的共享，但如何确定DMRS的发射功率尚没有明确的解决方案。
发明内容
本发明实施例提供一种上行共享信道的导频传输方法及相关设备，用以解决通过梳状 结构的方式将多个短数据传输的导频序列在相同资源区域中频分复用传输情况下，如何确定导频发射功率的问题。
本发明实施例提供的具体技术方案如下：
第一方面，本发明实施例提供了一种上行共享信道的导频传输方法，包括：
终端确定上行共享信道承载的数据的发射功率；
所述终端根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
所述终端按照所述导频的发射功率发送所述上行共享信道的导频。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
第二方面，本发明实施例提供了一种上行共享信道的导频传输方法，包括：
基站确定终端发送上行共享信道承载的数据的发射功率；
所述基站根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
第三方面，本发明实施例提供了一种终端，包括：
第一处理模块，用于确定上行共享信道承载的数据的发射功率；
第二处理模块，用于根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
发送模块，用于按照所述导频的发射功率发送所述上行共享信道的导频。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
第四方面，本发明实施例提供了一种基站，包括：
第一处理模块，用于确定终端发送上行共享信道承载的数据的发射功率；
第二处理模块，用于根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所 述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
第五方面，本发明实施例中提供了一种终端，包括处理器、存储器和收发机，其中，收发机用于在处理器的控制下接收和发送数据，存储器中保存有预设的程序，处理器用于读取存储器中的程序，按照该程序执行以下过程：
确定上行共享信道承载的数据的发射功率；
根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
通过收发机按照所述导频的发射功率发送所述上行共享信道的导频。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或 频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
第六方面，本发明实施例提供了一种基站，包括处理器和存储器，其中，存储器中保存有预设的程序，处理器用于读取存储器中的程序，按照该程序执行以下过程：
确定终端发送上行共享信道承载的数据的发射功率；
根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
可能的实施方式中，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可能的实施方式中，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可能的实施方式中，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可能的实施方式中，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可能的实施方式中，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可能的实施方式中，所述上行共享信道的传输时间间隔TTI小于1毫秒。
基于上述技术方案，本发明实施例中，终端根据上行共享信道承载的数据的发射功率以及该终端的导频功率提升因子，确定上行共享信道的导频的发射功率，其中定义终端的导频功率提升因子上行共享信道的导频在一个资源单元上的发射功率相对于上行共享信道承载的数据在一个资源单元上的发射功率的倍数，且定义该倍数大于或等于1，从而为通过梳状结构的方式将多个短数据传输的导频序列在相同资源区域中频分复用传输情况下，如何确定导频发射功率提供了解决方案，并且能够通过导频发射功率的提升，使得在导频传输密度减小的情况下提升信道估计的准确性。
附图说明
图1为FS1的结构示意图；
图2为FS2的结构示意图；
图3a为常规CP下PUSCH在一个子帧内的数据和导频结构示意图；
图3b为扩展CP下PUSCH在一个子帧内的数据和导频结构示意图；
图4为本发明实施例中终端侧进行上行共享信道的导频传输的方法流程示意图；
图5为本发明实施例中基站侧进行上行共享信道的导频传输的方法流程示意图；
图6为本发明实施例中频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为2时的梳状映射方式示意图；
图7为本发明实施例中频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为3时的梳状映射方式示意图；
图8为本发明实施例中频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为4时的梳状映射方式示意图；
图9为本发明实施例中频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为6时的梳状映射方式示意图；
图10为本发明实施例中终端结构示意图；
图11为本发明实施例中基站结构示意图；
图12为本发明实施例中另一终端结构示意图；
图13为本发明实施例中另一基站结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，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作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。
应理解，本发明的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)等。
还应理解，在本发明实施例中，用户设备(User Equipment，UE)包括但不限于移动台(Mobile Station，MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、手机(handset)及便携设备(portable equipment)等，该用户设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，例如，用户设备可以是移动电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等，用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
在本发明实施例中，基站(例如，接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，本发明并不限定。
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，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它实施例，都属于本发明保护的范围。
目前，短数据传输，特别是长度小于0.5ms的短数据传输，如果仅使用传统的一个子帧中的一列导频位置进行DMRS传输，其DMRS时域密度相对于1ms数据传输有所降低， 会影响时域插值性能，并且相对于2列DMRS传输抗干扰性能也有所下降，从而导致短数据传输的信道估计性能下降。
发明人发现，当采用梳状结构传输DMRS时，对于每个短数据传输，其DMRS在DMRS传输的单载波频分多址(Single Carrier-Frequency Division Multiple Access，SC-FDMA)符号上仅占部分频域资源传输，因此，在保证一个终端的一个DMRS SC-FDMA符号的总发射功率不超过一个数据SC-FDMA符号的总发射功率的前提下，可以在一定程度上提升DMRS的发射功率，从而提高短数据传输的信道估计性能和抗干扰性能。因此，本发明在采用梳状结构传输DMRS的基础上，提出了DMRS功率提升方案，以提高短数据传输的信道估计性能。
本发明实施例中，梳状结构是指导频根据起始频域位置，以及频域映射间隔或频域映射密度或导频复用因子进行传输。
基于此，本发明的核心思想在于：在采用梳状结构传输DMRS时，一个SC-FDMA符号上仅部分资源单元(Resource Element，RE)用来传输一个UE的DMRS。因此，在保证DMRS SC-FDMA符号的总发射功率不超过一个数据SC-FDMA的总发射功率的前提下，对每个DMRS RE的功率可以进行增强。由于DMRS密度减少，提升每个DMRS RE的功率有利于提高信道估计性能。
基于此，本发明实施例中，如图4所示，终端侧进行上行共享信道的导频传输的详细方法流程如下：
步骤401：终端确定上行共享信道承载的数据的发射功率。
本发明实施例中，上行共享信道的传输时间间隔小于1毫秒。
具体地，上行共享信道承载的数据的发射功率可以是基站通知给终端的，也可以是基站通过协议与终端约定的。
步骤402：终端根据上行共享信道承载的数据的发射功率以及终端的导频功率提升因子，确定该上行共享信道的导频的发射功率，其中，导频功率提升因子用于表示上行共享信道的导频在一个资源单元上的发射功率相对于上行共享信道承载的数据在一个资源单元上的发射功率的倍数，该倍数大于或等于1，导频以梳状结构在导频占用的时域符号中传输。
实施中，上行共享信道的导频在导频所占用的时域符号中的用于导频传输的资源单元上的发射功率的总和，不大于上行共享信道的数据的发射功率。
实施中，终端的导频功率提升因子有多种获得方式，包括但不限于以下几种：
第一，终端的导频功率提升因子由网络侧通过高层信令配置给该终端。
具体地，高层信令配置一个导频功率提升因子；或者，高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用时域符号的终端个数。
例如，系统中预先约定K个导频功率提升因子，表示为{n1,n2,…nk}，通过
Figure PCTCN2017084132-appb-000002
个比特的高层信令通知K个导频功率提升因子中的一个给终端，终端根据接收到的导频功率提升因子，基于上行共享信道承载的数据在一个RE的发射功率，计算该上行共享信道的导频在一个RE的发射功率即可。
其中，预先约定的K个导频功率提升因子中有一个值表示不进行功率提升。
第二，终端的导频功率提升因子由网络侧与该终端通过协议约定。
一个具体实施中，网络侧与终端通过该协议约定一个导频功率提升因子。该方式是预定义一个导频功率提升因子，即在任何情况下均采用该一个导频功率提升因子。
另一个具体实施中，对每个导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数约定一个导频功率提升因子。
例如，当导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为2时，预定义导频功率提升因子为n1。较优地，n1不超过2(表明在线性域的功率直接提升2倍，以下解释类似)或者不超过3dB(表明在dB域的功率提升3dB，以下解释类似)。当导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为3时，预定义导频功率提升因子为n2。较优地，n2不超过3或者不超过4.77dB。当导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为4时，预定义导频功率提升因子为n3。较优地，n3不超过4或者不超过6dB。当导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为6时，预定义导频功率提升因子为n4。较优地，n4不超过6或者不超过7.78dB。
第三，终端根据导频以梳状结构传输的频域映射间隔确定导频功率提升因子。
第四，终端根据导频以梳状结构传输的频域映射密度确定导频功率提升因子。
第五，终端根据以梳状结构复用同一时域符号的终端个数确定导频功率提升因子。
例如，终端若确定导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为2时，确定导频功率提升因子为2或者3dB。终端若确定导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为3时，确定导频功率提升因子为3或者4.77dB。终端若确定导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为4时，确 定导频功率提升因子为4或者6dB。终端若确定导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为6时，确定导频功率提升因子为6或者7.78dB。
实施中，导频功率提升因子的最大值与导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用时域符号的终端个数成正比。
其中，导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用时域符号的终端个数由网络侧通过高层信令配置给终端，或者，由网络侧与终端通过协议约定。
其中，以梳状结构复用时域符号的终端个数也可以用导频复用因子表示，该导频复用因子定义为在同一时域符号进行频分复用同时传输的不同导频序列的个数。
步骤403：终端按照所述导频的发射功率发送该上行共享信道的导频。
具体地，终端按照步骤402所确定的上行共享信道的导频的发射功率发送该上行共享信道的导频。
基于同一发明构思，本发明实施例中，如图5所示，基站侧进行上行共享信道的导频传输的详细方法流程如下：
步骤501：基站确定终端发送上行共享信道承载的数据的发射功率。
其中，上行共享信道的传输时间间隔小于1毫秒。
步骤502：基站根据终端的上行共享信道承载的数据的发射功率以及该终端的导频功率提升因子，确定该终端发送上行共享信道的导频的发射功率，其中，导频功率提升因子用于表示上行共享信道的导频在一个资源单元上的发射功率相对于上行共享信道承载的数据在一个资源单元上的发射功率的倍数，该倍数大于或等于1，导频以梳状结构在导频占用的时域符号中传输。
实施中，上行共享信道的导频在导频所占用的时域符号中的导频传输的资源单元上的发射功率的总和，不大于该上行共享信道的数据的发射功率。
实施中，终端的导频功率提升因子由网络侧通过高层信令配置给终端，或者，由网络侧与终端通过协议约定，或者，根据导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
具体地，高层信令配置一个导频功率提升因子；或者，高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数。
具体地，当终端的导频功率提升因子由网络侧与终端通过协议约定时，可以约定一个导频功率提升因子；或者，对每个导频以梳状结构传输的频域映射间隔或频域映射密度或 以梳状结构复用时域符号的终端个数约定一个导频功率提升因子。
实施中，在有多个导频功率提升因子的情况下，导频功率提升因子的最大值与导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数成正比。
实施中，导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数由网络侧通过高层信令配置给终端，或者，由网络侧与终端通过协议约定。
以下通过具体实施例对上行共享信道的导频传输的过程进行具体说明。
该具体实施例中，频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数，分别为2、3、4、6时的梳状映射方式分别如图6～图9所示。其中，以导频在一个频域基本单位中的映射为例给出，多个频域基本单位时每个频域基本单位的映射方式相同，一个频域基本单位假设为频域上连续的12个子载波，其它频域基本单位大小以及导频映射方式与此类似。
该具体实施例中上行共享信道的导频功率提升方案如下：
第一，导频功率提升因子为高层信令配置
假设预先约定系统中导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为4，并假设一个终端在一个频域基本单位中存在3个DMRS RE，假设导频SC-FDMA符号的总功率的最大值与数据SC-FDMA符号的功率相同，则导频在单个SC-FDMA上的功率最大可提升6dB。定义导频功率提升因子n的集合为{0dB，3dB，4.77dB，6dB}，即包含4个值，即K＝4，需要2比特高层信令通知4个导频功率提升因子中的一个给终端。其中，功率提升因子0对应功率不提升，导频功率提升因子6对应功率的最大提升值。
该具体实施例中，定义用于PUSCH数据传输的RE的功率为EData_RE。终端根据接收到的高层信令所通知的导频功率提升因子n，计算DMRS RE的传输功率为EDMRS_RE＝10n/10·EData_RE。
当然，导频功率提升因子还可以直接定义为DMRS RE的发射功率相对于数据RE的发射功率的倍数，例如定义导频功率提升因子n的集合为{1,2,3,4}，通过2比特高层信令通知4个功率提升因子中的一个给终端，其中，1对应功率不提升，4对应DMRS RE的发射功率是数据RE的发射功率的4倍，终端根据接收到的高层信令通知的导频功率提升因子n，计算DMRS RE的传输功率为EDMRS_RE＝n·EData_RE。
第二，导频功率提升因子为预先定义
假设预先约定系统中导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为4，假设一个终端在一个频域基本单位中存在3个DMRS RE，并假设导频SC-FDMA符号的总功率的最大值与数据SC-FDMA符号的功率相同，则导频在单个SC-FDMA上的功率最大可提升6dB。
该具体实施例中，预定义不同的频域映射间隔各自对应的导频功率提升因子，且定义用于PUSCH数据传输的RE的功率为EData_RE。终端根据频域映射间隔对应的预定义的导频功率提升因子n，计算DMRS RE的传输功率为EDMRS_RE＝10n/10·EData_RE。
或者，对于所有导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数，预定义一个统一的导频功率提升因子。最小的导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为2时，假设导频SC-FDMA符号的总功率的最大值与数据-FDMA符号的功率相同，则导频在单个SC-FDMA上的功率最大可提升6dB，假设定义一个不超过3dB的导频功率提升因子n，则DMRS RE的传输功率为：EDMRS_RE＝10n/10·EData_RE。
当然，导频功率提升因子还可以直接定义为DMRS RE的发射功率相对于数据RE的发射功率的倍数，例如预定义导频功率提升因子n，计算DMRS RE的传输功率为EDMRS_RE＝n·EData_RE。
第三，导频功率提升因子为根据导频的频域映射间隔或频域映射密度或导频复用因子确定
该具体实施例中，导频复用因子为以梳状结构复用同一时域符号的终端个数。
假设预先约定系统中导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数为M，则一个频域基本单位中存在12/M个DMRS RE。导频在单个SC-FDMA上的功率最大可提升10log10MdB，根据最大可提升功率建立表2，表2所示为导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数与导频功率提升因子之间的映射关系。
表2
Figure PCTCN2017084132-appb-000003
该具体实施例中，定义用于PUSCH数据传输的RE的功率为EData_RE，终端根据收到的高层信令所通知的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数，得到导频功率提升因子n，则DMRS RE的传输功率表示为：EDMRS_RE＝10n/10·EData_RE。
当然，导频功率提升因子还可以直接定义为DMRS RE的发射功率相对于数据RE的发射功率的倍数，如表3所示为导频的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数与导频功率提升因子之间的映射关系。则DMRS RE的传输功率为：EDMRS_RE＝n·EData_RE。
表3
Figure PCTCN2017084132-appb-000004
基于同一发明构思，本发明实施例提供了一种终端，该终端的具体实施可参见方法实施例部分的相关描述，重复之处不再赘述，如图10所示，该终端主要包括：
第一处理模块1001，用于确定上行共享信道承载的数据的发射功率；
第二处理模块1002，用于根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
发送模块1003，用于按照所述导频的发射功率发送所述上行共享信道的导频。
可选地，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可选地，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可选地，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可选地，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可选地，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可选地，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可选地，所述上行共享信道的传输时间间隔TTI小于1毫秒。
基于同一发明构思，本发明实施例提供了一种基站，该基站的具体实施可参见方法实施例部分的相关描述，重复之处不再赘述，如图11所示，该基站主要包括：
第一处理模块1101，用于确定终端发送上行共享信道承载的数据的发射功率；
第二处理模块1102，用于根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
可选地，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可选地，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可选地，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可选地，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可选地，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可选地，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可选地，所述上行共享信道的传输时间间隔TTI小于1毫秒。
基于同一发明构思，本发明实施例中还提供了一种终端，该终端的具体实施可参见方法实施例部分的相关描述，重复之处不再赘述，如图12所示，该终端主要包括处理器1201、存储器1202和收发机1203，其中，收发机1203用于在处理器1201的控制下接收和发送数据，存储器1202中保存有预设的程序，处理器1201用于读取存储器1202中的程序，按照该程序执行以下过程：
确定上行共享信道承载的数据的发射功率；
根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
通过收发机1203按照所述导频的发射功率发送所述上行共享信道的导频。
可选地，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可选地，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可选地，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可选地，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或 频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可选地，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可选地，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可选地，所述上行共享信道的传输时间间隔TTI小于1毫秒。
基于同一发明构思，本发明实施例中还提供了一种基站，该基站的具体实施可参见方法实施例部分的相关描述，重复之处不再赘述，如图13所示，该基站主要包括处理器1301、存储器1302和收发机1303，其中，收发机1303用于在处理器1301的控制下接收和发送数据，存储器1302中保存有预设的程序，处理器1301用于读取存储器1302中的程序，按照该程序执行以下过程：
确定终端发送上行共享信道承载的数据的发射功率；
根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
可选地，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
可选地，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
可选地，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
可选地，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
可选地，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔 或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
可选地，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
可选地，所述上行共享信道的传输时间间隔TTI小于1毫秒。
其中，在图12和图13中，处理器、存储器和收发机之间通过总线连接，总线架构可以包括任意数量的互联的总线和桥，具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
基于上述技术方案，本发明实施例中，终端根据上行共享信道承载的数据的发射功率以及该终端的导频功率提升因子，确定上行共享信道的导频的发射功率，其中定义终端的导频功率提升因子上行共享信道的导频在一个资源单元上的发射功率相对于上行共享信道承载的数据在一个资源单元上的发射功率的倍数，且定义该倍数大于或等于1，从而为通过梳状结构的方式将多个短数据传输的导频序列在相同资源区域中频分复用传输情况下，如何确定导频发射功率提供了解决方案，并且能够通过导频发射功率的提升，使得在导频传输密度减小的情况下提升信道估计的准确性。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (32)

  1. 一种上行共享信道的导频传输方法，其特征在于，包括：
    终端确定上行共享信道承载的数据的发射功率；
    所述终端根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
    所述终端按照所述导频的发射功率发送所述上行共享信道的导频。
  2. 如权利要求1所述的方法，其特征在于，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
  3. 如权利要求1所述的方法，其特征在于，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
  4. 如权利要求3所述的方法，其特征在于，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
    所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
  5. 如权利要求3所述的方法，其特征在于，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
    约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
  6. 如权利要求3所述的方法，其特征在于，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
  7. 如权利要求1-6中任一项所述的方法，其特征在于，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
  8. 如权利要求1-6任一项所述的方法，其特征在于，所述上行共享信道的传输时间间隔TTI小于1毫秒。
  9. 一种上行共享信道的导频传输方法，其特征在于，包括：
    基站确定终端发送上行共享信道承载的数据的发射功率；
    所述基站根据所述终端的所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
  10. 如权利要求9所述的方法，其特征在于，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
  11. 如权利要求9所述的方法，其特征在于，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
  12. 如权利要求11所述的方法，其特征在于，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
    所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
  13. 如权利要求11所述的方法，其特征在于，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
    约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
  14. 如权利要求11所述的方法，其特征在于，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
  15. 如权利要求9-14任一项所述的方法，其特征在于，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
  16. 如权利要求9-14任一项所述的方法，其特征在于，所述上行共享信道的传输时间间隔TTI小于1毫秒。
  17. 一种终端，其特征在于，包括：
    第一处理模块，用于确定上行共享信道承载的数据的发射功率；
    第二处理模块，用于根据所述上行共享信道承载的数据的发射功率以及所述终端的导频功率提升因子，确定所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输；
    发送模块，用于按照所述导频的发射功率发送所述上行共享信道的导频。
  18. 如权利要求17所述的终端，其特征在于，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
  19. 如权利要求17所述的终端，其特征在于，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
  20. 如权利要求19所述的终端，其特征在于，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
    所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
  21. 如权利要求19所述的终端，其特征在于，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
    约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
  22. 如权利要求19所述的终端，其特征在于，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
  23. 如权利要求17-22中任一项所述的终端，其特征在于，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
  24. 如权利要求17-22中任一项所述的终端，其特征在于，所述上行共享信道的传输时间间隔TTI小于1毫秒。
  25. 一种基站，其特征在于，包括：
    第一处理模块，用于确定终端发送上行共享信道承载的数据的发射功率；
    第二处理模块，用于根据所述终端的所述上行共享信道承载的数据的发射功率以及所 述终端的导频功率提升因子，确定所述终端发送所述上行共享信道的导频的发射功率，其中，所述导频功率提升因子用于表示所述上行共享信道的导频在一个资源单元上的发射功率相对于所述上行共享信道承载的数据在一个资源单元上的发射功率的倍数，所述倍数大于或等于1，所述导频以梳状结构在导频占用的时域符号中传输。
  26. 如权利要求25所述的基站，其特征在于，所述上行共享信道的导频在导频所占用的所述时域符号中的导频传输的资源单元上的发射功率的总和，不大于所述上行共享信道的数据的发射功率。
  27. 如权利要求25所述的基站，其特征在于，所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定，或者，根据所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用同一时域符号的终端个数确定。
  28. 如权利要求27所述的基站，其特征在于，当所述终端的导频功率提升因子由网络侧通过高层信令配置给所述终端时，具体包括：
    所述高层信令配置一个导频功率提升因子，或者所述高层信令配置多个导频功率提升因子，其中，每个导频功率提升因子对应一个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数。
  29. 如权利要求27所述的基站，其特征在于，当所述终端的导频功率提升因子由网络侧与所述终端通过协议约定时，具体包括：
    约定一个导频功率提升因子，或者对每个所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数约定一个导频功率提升因子。
  30. 如权利要求27所述的基站，其特征在于，所述导频功率提升因子的最大值与所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数成正比。
  31. 如权利要求25-30任一项所述的基站，其特征在于，所述导频以梳状结构传输的频域映射间隔或频域映射密度或以梳状结构复用所述时域符号的终端个数由网络侧通过高层信令配置给所述终端，或者，由网络侧与所述终端通过协议约定。
  32. 如权利要求25-30任一项所述的基站，其特征在于，所述上行共享信道的传输时间间隔TTI小于1毫秒。
PCT/CN2017/084132 2016-05-13 2017-05-12 一种上行共享信道的导频传输方法及相关设备 Ceased WO2017193996A1 (zh)

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