WO2017194005A1 - Procédé et dispositif de transmission de signal et équipement d'utilisateur - Google Patents

Procédé et dispositif de transmission de signal et équipement d'utilisateur Download PDF

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Publication number
WO2017194005A1
WO2017194005A1 PCT/CN2017/084176 CN2017084176W WO2017194005A1 WO 2017194005 A1 WO2017194005 A1 WO 2017194005A1 CN 2017084176 W CN2017084176 W CN 2017084176W WO 2017194005 A1 WO2017194005 A1 WO 2017194005A1
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Prior art keywords
time domain
srs
transmission
physical layer
srs transmission
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Chinese (zh)
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杨玲
赵亚军
苟伟
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to, but is not limited to, the field of communications, and more particularly to a signal transmission method, apparatus, and user equipment (User Equipment, UE for short).
  • User Equipment User Equipment
  • unlicensed spectrum has the following characteristics: free/low cost; low entry requirements, low cost; large available bandwidth; resource sharing;
  • SRS Sounding Reference Signal
  • LAA Licensed Assisted Access
  • CSI channel state information
  • the LAA is a natural Time Division Duplex (TDD) carrier
  • TDD Time Division Duplex
  • the LBT Listen Before Talk, LBT for short
  • the downlink CSI also has the characteristics of less measurement opportunities and large delay between measurement and reporting, so that the LAA uplink SRS is a mandatory option. Based on this, the SRS transmission has been studied and discussed in the current Rel-14eLAA.
  • the embodiment of the invention provides a signal transmission method, device and user equipment to improve the transmission opportunity of the SRS.
  • a signal transmission method comprising: determining a symbol position for transmitting a sounding reference signal SRS; transmitting the SRS at the determined symbol position; wherein the symbol position is Time domain symbol position or candidate time domain symbol position.
  • a signal transmission apparatus comprising: a first determining module configured to determine a symbol position for transmitting a sounding reference signal SRS; a first transmission module configured to determine The SRS is transmitted at a symbol position; wherein the symbol position is a time domain symbol position or a candidate time domain symbol position.
  • a user equipment UE comprising the apparatus of any of the above.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the above signal transmission method.
  • the symbol position for transmitting the sounding reference signal SRS is determined, and the effect of effectively improving the transmission opportunity of the SRS is achieved.
  • FIG. 1 is a block diagram showing the hardware structure of a user equipment of a signal transmission method according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a signal transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of determining a time domain subframe position of an SRS transmission according to a timing relationship n+k according to an embodiment of the present invention
  • FIG. 4 is a first schematic diagram of determining a time domain subframe position of an SRS transmission according to a timing relationship n+k1 according to an embodiment of the present invention
  • FIG. 5 is a second schematic diagram of determining a time domain subframe position of an SRS transmission according to a timing relationship n+k1 according to an embodiment of the present invention
  • the second DCI signaling is determined according to an n+k or n+k1 timing relationship, and the time domain subframe position and/or SRS transmission time of the SRS transmission is determined according to an n+k or n+k1 timing relationship.
  • FIG. 7 is a first DCI signaling triggering SRS transmission according to an embodiment of the present invention, and indicating a time domain subframe position of an SRS transmission according to an n+k timing relationship, where the second DCI signaling determines an SRS transmission according to an n+k1 timing relationship.
  • FIG. 8 is a schematic diagram of introducing a self-delay operation in an LBT mechanism when different UEs configure a time domain symbol position of the same SRS transmission according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a time domain structure in a subframe at the end of a downlink transmission burst according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of different SRS transmission time domain symbols configured by different UEs in a downlink subframe of a downlink transmission burst according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of frequency domain repetition N satisfying ETSI regulatory bandwidth requirements according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of satisfying an ETSI regulatory bandwidth requirement by using a block interleaving method according to an embodiment of the present invention
  • FIG. 13 is a block diagram 1 of a structure of a signal transmission apparatus according to an embodiment of the present invention.
  • FIG. 14 is a structural block diagram 1 of a first determining module 132 in a signal transmission apparatus according to an embodiment of the present invention
  • FIG. 15 is a second structural block diagram of a first determining module 132 in a signal transmission apparatus according to an embodiment of the present invention.
  • 16 is a structural block diagram 2 of a signal transmission apparatus according to an embodiment of the present invention.
  • 17 is a block diagram 3 of a structure of a signal transmission apparatus according to an embodiment of the present invention.
  • FIG. 18 is a structural block diagram of a user equipment UE 10 according to an embodiment of the present invention.
  • FIG. 1 is a hardware structural block diagram of a user equipment of a signal transmission method according to an embodiment of the present invention.
  • user equipment 10 may include one or more (only one shown) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA)
  • processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA)
  • a memory 104 for storing data
  • a transmission device 106 for communication functions.
  • FIG. 1 is merely illustrative and does not limit the structure of the above electronic device.
  • user device 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than that shown in FIG.
  • the memory 104 can be configured as a software program and a module for storing application software, such as program instructions/modules corresponding to the signal transmission method in the embodiment of the present invention, and the processor 102 executes each by executing a software program and a module stored in the memory 104.
  • a functional application and data processing, that is, the above method is implemented.
  • Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 104 may further include memory remotely located relative to processor 102, which may be connected to user device 10 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 106 is arranged to receive or transmit data via a network.
  • the network instance described above may include a wireless network provided by a communication provider of the user equipment 10.
  • the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 can be a Radio Frequency (RF) module configured to communicate with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF Radio Frequency
  • the SRS has reached the following conclusions in the eLAA: support for the non-periodic sounding reference signal and the Physical Uplink Shared Channel (SRS with PUSCH) transmission.
  • Acyclic SRS (without PUSCH) is supported for transmission in the downlink sub-frame. The transmission of SRS in the uplink subframe is under further study.
  • FIG. 2 is a flowchart of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps:
  • Step S202 determining a symbol position for transmitting the sounding reference signal SRS; wherein the symbol position is a time domain symbol position or a candidate time domain symbol position;
  • Step S204 transmitting the SRS at the determined symbol position.
  • the symbol position for transmitting the sounding reference signal SRS is determined by the above steps, which effectively increases the transmission opportunity of the SRS.
  • the execution body of the above steps may be a user equipment or the like, but is not limited thereto.
  • the symbol position for transmitting the sounding reference signal SRS is determined according to at least one of the following:
  • the predetermined correspondence between the number of symbols and the position of the symbol includes at least one of the following: a correspondence between the index number and a different number of symbols and a symbol position; and a predetermined number of symbols, the index number and the symbol The correspondence between the locations.
  • determining the symbol location for transmitting the SRS comprises determining a symbol location for transmitting the SRS based on the acquired index number.
  • the index number is obtained by at least one of the following methods: a manner of controlling RRC signaling by a high-layer radio link, a mode of controlling DCI signaling by a physical layer downlink control, and a pre-agreed by a base station and a user equipment UE.
  • a field for indicating an index number is added.
  • the signaling that explicitly indicates the symbol location used for transmitting the SRS includes at least one of the following signaling: high layer RRC signaling; physical layer DCI letter. Let, in the signaling, include a field for indicating the symbol position of the SRS transmission.
  • the method for explicitly indicating the signaling includes: the high-layer RRC signaling configures the SRS transmission time domain location or the candidate time domain location, and the physical layer DCI signaling triggers the SRS time domain location configured by the high-layer RRC signaling.
  • the candidate time domain location is valid; or the SRS time domain location or the candidate time domain location configured by the high layer RRC signaling is configured as soon as possible; or the SRS time domain location or the candidate time domain location configured by the upper layer RRC signaling, It takes effect in the sub-frame or the uplink transmission burst at the end of the downlink transmission burst.
  • the means for explicitly indicating the signaling includes: the physical layer DCI signaling carries a symbol location field for indicating the SRS transmission; or the first physical layer DCI signaling triggers the SRS transmission, The second physical layer DCI signaling indicates the symbol location of the SRS transmission.
  • the first physical layer DCI signaling triggers the SRS transmission, including: the first physical layer DCI signaling carries a field for triggering the SRS transmission, where the field triggering the SRS transmission includes: triggering an SRS transmission, Or, multiple SRS transmissions.
  • the symbol position for transmitting the SRS is determined by implicitly agreeing, including at least one of: determining a symbol position for transmitting the SRS according to the number of symbols remaining in the subframe at the end portion of the downlink transmission burst; The moment when the LBT mechanism is successfully executed is determined to determine the symbol position for transmitting the SRS; the base station and the UE determine the symbol position for transmitting the SRS in a manner agreed in advance.
  • the obtaining the time domain symbol position for the SRS transmission may include: determining the time domain symbol position of the SRS transmission according to the correspondence between the number of different symbols and the time domain symbol position of the SRS transmission; according to the number of different symbols and the candidate time domain Determining the candidate time domain symbol position according to the symbol position correspondence; determining the time domain symbol position of the SRS transmission according to the high layer RRC signaling, or the candidate time domain symbol position; determining the time domain symbol position of the SRS transmission according to the physical layer DCI signaling, or a candidate time domain symbol position; determining a time domain symbol position of the SRS transmission according to an implicit manner, or a candidate time domain symbol position; determining a time domain symbol position of the SRS transmission according to a predefined manner, or a candidate time domain symbol position.
  • the time domain subframe position or the candidate time domain subframe position to which the symbol position for transmitting the SRS belongs may be determined by at least one of the following: a manner configured by high layer RRC signaling; and a physical layer DCI Mode of signaling configuration; through high-layer RRC signaling and physical layer The manner in which the DCI signaling is combined with the configuration; the method of combining the physical layer DCI signaling by N times, where N is an integer greater than or equal to 1; in a manner implicitly agreed; in a manner agreed by the base station and the UE in advance.
  • determining the time domain subframe position or the candidate time domain subframe position by using the high layer RRC signaling configuration includes: configuring the parameter for the SRS transmission by using the high layer RRC signaling to determine the time domain subframe position or candidate The time domain sub-frame position; or the parameters for the SRS transmission configured by the high-layer RRC signaling are valid once configured; or the parameters for the SRS transmission configured by the high-layer RRC signaling are valid during the uplink transmission burst;
  • the parameters for SRS transmission include at least one of the following: period, offset, transmission comb, cyclic shift, symbol index of LBT, time domain pattern of SRS transmission, time window of SRS transmission, offset within time window , time window interval, start position of SRS transmission time window, one transmission, multiple transmission.
  • determining, by the physical layer DCI signaling configuration, the time domain subframe position or the candidate time domain subframe position may include at least one of the following: the physical layer DCI signaling that triggers the SRS transmission is on the subframe n. Transmitting, determining a time domain subframe position or a candidate time domain subframe position according to a predetermined timing relationship; carrying a field indicating a time domain subframe position or a candidate time domain subframe position in the physical layer DCI signaling, and determining a time domain according to the field Subframe position or candidate time domain subframe position.
  • determining, by using a combination of the high layer RRC signaling and the physical layer DCI signaling, that the time domain subframe position or the candidate time domain subframe position may include at least one of the following: a high layer RRC signaling configuration for the SRS
  • the parameters of the transmission, the physical layer DCI signaling triggers the parameters of the SRS transmission configured by the upper layer RRC signaling to be valid; the high layer RRC signaling configures at least one of the parameters used for the SRS transmission, and the physical layer DCI signaling is configured with the upper layer RRC.
  • the high layer RRC signaling is configured to configure at least one of the parameters of the SRS transmission, and the physical layer DCI signaling carries the time domain subframe position or the candidate time domain subframe indicating the SRS transmission.
  • the high layer RRC signaling configures at least one of parameters for SRS transmission
  • the physical layer DCI signaling triggers the SRS transmission And/or determining a time domain subframe position or a candidate time domain subframe position for SRS transmission according to a predetermined timing relationship
  • the parameter for SRS transmission includes at least one of the following: a period, an offset, a transmission comb Tooth, cyclic shift, LBT symbol index, time domain pattern of SRS transmission, time window of SRS transmission, time window offset, time window interval, SRS transmission time window Starting position, one transmission, multiple transmissions.
  • determining, by using N times physical layer DCI signaling, the time domain subframe position or the candidate time domain subframe position may include at least one of: configuring SRS transmission by the first physical layer DCI signaling The time domain subframe position or the candidate time domain subframe position, the information of the first physical layer DCI signaling configuration is enabled by the second physical layer DCI signaling, and/or the SRS transmission is triggered by the second physical layer DCI signaling; SRS transmission is triggered by the first physical layer DCI signaling, and the time domain subframe position or the candidate time domain subframe position of the SRS transmission is indicated by the second physical layer DCI signaling; the SRS transmission is triggered by the first physical layer DCI signaling, and the a second physical layer DCI signaling, determining a time domain subframe position or a candidate time domain subframe position of the SRS transmission according to a predetermined timing relationship; determining, by the first physical layer DCI signaling, a time domain subframe position of transmitting the SRS according to a predetermined timing relationship
  • the predetermined timing relationship includes: n+k; or, n+k1; wherein n is a subframe number sent by the physical layer DCI signaling that triggers the SRS transmission, or the physicality of the SRS transmission time domain symbol location The sub-frame number sent by the layer DCI signaling; k is a positive integer greater than or equal to 4; k1 is a positive integer greater than or equal to 0.
  • k or k1 may be obtained by at least one of the following: a high-level RRC signaling configuration; a physical layer DCI signaling indication; and a base station and a UE pre-agreed mode.
  • the physical layer DCI signaling includes one of the following: UE-specific DCI signaling, using DCI format 0/4; common DCI signaling, using DCI format 1C; group downlink control information Group DCI signaling, adopting DCI format 3/3A; downlink downlink control information DL DCI signaling, using DCI format 1A/2A/2B/2C; new DCI signaling.
  • the time domain subframe position or the candidate time domain subframe position of the SRS transmission is determined by an implicit agreement, including at least one of the following: an SRS parameter configured to enable high layer RRC signaling configuration after the downlink transmission burst ends Or the time domain subframe position or the candidate time domain subframe position of the SRS transmission explicitly indicated by the physical layer DCI signaling; the last partial subframe after the downlink transmission burst; the first uplink subframe after the downlink transmission burst; the downlink transmission burst After the second uplink subframe, after the downlink transmission burst, the uplink subframe index in the uplink transmission burst is an even number corresponding to the sub-frame.
  • the uplink subframe index in the uplink transmission burst is an odd-numbered subframe; the first uplink subframe in the uplink transmission burst; the second uplink subframe in the uplink transmission burst; and the uplink subframe in the uplink transmission burst
  • the frame index is an even-numbered subframe; the uplink subframe index in the uplink transmission burst is an odd-numbered subframe; wherein the SRS parameter includes at least one of the following: a period, an offset, a transmission comb, a cyclic shift, and an LBT Symbol index, time domain pattern of SRS transmission, time window of SRS transmission, offset in time window, interval in time window, starting position of SRS transmission time window, one transmission, multiple transmission.
  • the acquiring the time domain subframe position for the SRS transmission may include: determining the time domain subframe position of the SRS transmission according to a specific timing relationship by triggering the subframe n transmitted by the physical layer DCI signaling of the SRS transmission. Or, the candidate time domain subframe position; the physical layer DCI signaling that triggers the SRS transmission explicitly indicates the time domain subframe position of the SRS transmission, or the candidate time domain subframe position; triggers the SRS by the first physical layer DCI signaling And transmitting, by using the second physical layer DCI signaling, determining a time domain subframe position of the SRS transmission according to a specific timing relationship, or a candidate time domain subframe position; triggering the SRS transmission by using the first physical layer DCI signaling, and adopting the second physical
  • the layer DCI signaling explicitly indicates the time domain subframe position of the SRS transmission, or the candidate time domain subframe position; the SRS transmission is triggered by the physical layer DCI signaling, and the time domain subframe position of the SRS transmission is determined by an
  • the time domain subframe used for transmitting the SRS may be a subframe at the end of the downlink transmission burst, or may be an uplink normal subframe.
  • the time domain symbol position for transmitting the SRS may be determined by at least one of the following manners: the UE may follow the pre- The number of remaining symbols in the subframe at the end of the defined downlink transmission burst corresponds to the time domain symbol position of the SRS transmission, or the candidate time domain symbol position; the number of different symbols configured by the UE according to the RRC signaling and the time domain symbol position of the SRS transmission, or a sequence index number corresponding to the candidate time domain symbol position, determining a time domain symbol position of the SRS transmitted in the end portion of the downlink burst, or a time domain symbol position of the candidate SRS transmission; the UE explicitly indicates in accordance with the physical layer DCI signaling The time domain symbol position of the SRS transmitted in
  • time domain subframe position or candidate time domain subframe position information for indicating SRS transmission and symbol position information for indicating SRS transmission in the same physical layer DCI signaling, or at different physical layer DCI In the signaling.
  • transmitting the SRS at the symbol position on the time domain subframe position may include the following cases: different user equipment UEs are transmitted in the same one time domain symbol position; different UEs are in different time domain symbols. Location transmission; different UEs are transmitted in the same candidate time domain symbol position; different UEs are transmitted in different candidate time domain symbol positions.
  • different UEs are multiplexed by different transmission combs and/or cyclic shifts in the case of transmissions on the same time domain symbol location or candidate time domain symbol location.
  • transmitting, by the different UEs in the same or different candidate time domain symbol positions comprises: stopping the candidate time domain symbol positions in a case where a predetermined time domain symbol position transmission SRS is successful in the candidate time domain symbol positions Transmitting SRS in other time domain symbol positions than the predetermined time domain symbol position; or, in the case where a predetermined time domain symbol position transmission SRS in the candidate time domain symbol position is successful, continuing to be excluded in the candidate time domain symbol position
  • the SRS is transmitted at other time domain symbol locations than the predetermined time domain symbol location.
  • the method before the different UEs transmit in the same or different symbol positions, the method further includes: performing an LBT mechanism after the first listening, and transmitting the SRS at the symbol position if the LBT mechanism is successful.
  • performing the LBT mechanism includes: adopting the same or different LBT mechanisms for different candidate time domain symbol positions, wherein when different LBT mechanisms are used
  • the LBT mechanism performed before the previous candidate time domain symbol position is simplified compared to the LBT mechanism performed before the latter candidate time domain symbol position, or there is a shorter contention window.
  • At least one of the following manners can be adopted to meet the regulatory requirement that the SRS transmission bandwidth accounts for at least 80% of the total bandwidth: by repeating the SRS occupying the bandwidth for a predetermined number of times N, by increasing the length of the SRS sequence.
  • the method of modifying the subcarrier spacing by means of frequency domain frequency hopping, by means of resource block interleaving, by means of block interleaving.
  • the last partial subframe refers to a position at which the end of the transmission is a boundary of an OFDM symbol in the subframe, that is, the transmission end position is not a subframe boundary.
  • the beginning of a partial subframe means that the position of the start of the transmission does not start from the boundary of the subframe, but starts from the boundary of an OFDM symbol in the subframe.
  • the number of OFDM symbols remaining in the last partial subframe of the end of the downlink transmission burst in the LAA includes one of the following: 3, 6, 9, 10, 11, 12, 14 symbols.
  • the number of different OFDM symbols and the time domain position of the SRS transmission are mainly given.
  • the correspondence between the number of different OFDM symbols and the SRS transmission interval or the candidate SRS transmission time domain position is also given.
  • Table 1 mainly shows the symbol positions at which the terminal UE transmits the SRS in one subframe for 1 to 14 or 1 to 12 OFDM symbols.
  • Table 1 Corresponding to the symbol position of SRS transmission according to the number of different symbols
  • the terminal UE can determine the time domain symbol position of an SRS transmission based on a sequence index number. Wherein, if the UE contends for the use right of the unlicensed carrier before the determined SRS symbol position, the UE transmits the SRS at the corresponding SRS symbol position. Conversely, give up this opportunity to transmit SRS at the SRS symbol location.
  • the UE may directly transmit the SRS without performing the LBT.
  • the preset duration can be 16us, or 25us.
  • the method for using the different symbol numbers corresponding to the time domain symbol position of the SRS transmission is also applicable to the subframe level.
  • the number of OFDM symbols in the table is changed to the number of subframes, or the length of the time window, that is, the symbol index is replaced with the subframe index.
  • the symbol index is from 0 to 11 or 13
  • the subframe index is from 0 to 9.
  • a correspondence table between the number of remaining symbols in the subframe and the SRS transmission time domain symbol position is determined. As shown in Table 2.
  • Table 2 Table for determining the symbol position of the SRS transmission based on the number of symbols remaining in the sub-frame of the downstream end
  • Another method is to independently formulate corresponding SRS transmission time domain symbol positions for different numbers of symbols (3, 6, 9, 10, 11, 12, 14) available in one subframe.
  • the transmission symbol position of the SRS is corresponding.
  • the symbol positions at which the UE can transmit the SRS are as follows:
  • Table 3 Symbol positions corresponding to SRS transmissions when the number of symbols remaining in the subframe at the end of the downlink is 3
  • the symbol position at which the UE can transmit the SRS is as follows:
  • Table 4 Symbol positions corresponding to SRS transmissions when the number of symbols remaining in the sub-frame at the end of the downlink is 6.
  • the transmission symbol position of the SRS is corresponding.
  • the symbol position at which the UE can transmit the SRS is as follows:
  • Table 5 Symbol positions corresponding to SRS transmission according to the number of symbols remaining in the sub-frame at the end of the downlink
  • the transmission symbol position of the SRS is corresponding.
  • the symbol positions at which the UE can transmit the SRS are as follows:
  • Table 6 Symbol positions corresponding to SRS transmissions when the number of symbols remaining in the subframe at the end of the downlink is 10
  • the transmission symbol position of the SRS is corresponding.
  • the symbol positions at which the UE can transmit the SRS are as follows:
  • Table 7 Symbol positions corresponding to SRS transmissions when the number of symbols remaining in the sub-frame at the end of the downlink is 11.
  • the symbol positions at which the UE can transmit the SRS are as follows:
  • Table 8 corresponds to the SRS transmission when the number of symbols remaining in the downlink end subframe is 12. Symbol position
  • the transmission symbol position of the SRS is corresponding.
  • the symbol position at which the UE can transmit the SRS is as follows:
  • Table 9 Symbol positions corresponding to SRS transmissions when the number of symbols remaining in the sub-frame at the end of the downlink is 14.
  • the main method is to improve the SRS transmission opportunity, that is, the UE has at least one symbol position available for SRS transmission.
  • the UE if the user equipment UE competes for the right to use the unlicensed carrier before the candidate SRS symbol position (ie, the LBT process is successfully completed according to the specific LBT mechanism, that is, the user is considered to compete for the use right of the unlicensed carrier), the UE is currently in the current The SRS is transmitted at the SRS symbol position. For the UE, the transmission is abandoned at the candidate other SRS symbol locations, or the candidate other SRS symbol locations are invalid for the UE.
  • the UE if the user equipment UE competes for the right to use the unlicensed carrier before the candidate SRS symbol position (ie, the LBT process is successfully completed according to the specific LBT mechanism, that is, the user is considered to compete for the use right of the unlicensed carrier), the UE is currently in the current The SRS is transmitted at the SRS symbol position.
  • the other SRS symbol positions are also transmitted at the candidate.
  • the UE may directly transmit the candidate SRS time domain symbol positions without performing LBT.
  • the UE still needs to perform the LBT mechanism before the transmission of the candidate SRS in the time domain symbol position (the LBT mechanism can be executed when the SRS has been successfully transmitted).
  • the LBT mechanism is more simplified (for example, 25us LBT Cat2), or, with a smaller contention window and a value of n in the defer period), the access right of the unlicensed carrier can be obtained.
  • the candidate time domain symbol position is transmitted.
  • the UE transmits a sparse occupancy signal on the blank symbol between the time domain symbol position of the successfully transmitted SRS and the next SRS time domain symbol position.
  • the following is the SRS transmission symbol position of the UE candidate for different OFDM symbol numbers.
  • the transmission symbol position of the SRS corresponding to the UE candidate When 3 OFDM symbols are used, the transmission symbol position of the SRS corresponding to the UE candidate.
  • Table 10 The transmission symbol position of the SRS corresponding to the UE candidate according to the number of symbols remaining in the downlink end subframe is 3.
  • the transmission symbol position of the SRS corresponding to the UE candidate When 6 OFDM symbols, the transmission symbol position of the SRS corresponding to the UE candidate.
  • Table 11 Transmission symbol positions of SRSs corresponding to UE candidates when the number of symbols remaining in the downlink end subframe is 6
  • the transmission symbol position of the SRS corresponding to the UE candidate When 9 OFDM symbols are used, the transmission symbol position of the SRS corresponding to the UE candidate.
  • Table 12 shows the transmission symbol position of the SRS corresponding to the UE candidate according to the number of symbols remaining in the downlink end subframe.
  • the number of transmission symbol positions of the SRS corresponding to the UE candidate is too large, and there is not one here. Listed.
  • the corresponding candidate SRS transmits the symbol position as above, and is also within the scope of protection of the present application.
  • the index number in the table and/or the table may be configured by higher layer RRC signaling, and/or, Physical layer DCI signaling configuration, and/or acquisition by the base station and the UE in a manner agreed upon in advance.
  • the index number in the table and/or the table may also be configured to the UE by the cell-level public parameter, or the UE-level parameter may be configured to the UE.
  • UE-specific DCI signaling for example, DCI format 0/4;
  • DCI signaling for example, DCI format 1C;
  • Group downlink control information Group DCI signaling for example, DCI format 3/3A;
  • Downlink downlink control information DL DCI signaling for example, DCI format 1A/2B/2C/2D;
  • New DCI signaling for example, in addition to the new format already available for DCI foramt;
  • a field indicating the index number in the table may be introduced, and/or used to trigger the upper layer.
  • the parameter enabled field of the RRC signaling configuration may be used, and/or used to trigger the upper layer.
  • a method for instructing a UE to transmit an SRS in a sub-frame of a downlink transmission burst is provided.
  • the method for determining the time domain symbol position of the SRS transmission, or the candidate time domain symbol position of the SRS transmission, when the user equipment UE performs the SRS transmission in the downlink subframe of the downlink transmission burst includes:
  • Method 1 determining a time domain symbol position of the SRS transmission by using a corresponding index number in the table by using a corresponding relationship table between the number of different symbols and the time domain symbol position of the SRS transmission, or the candidate time domain symbol position of the SRS transmission, or Candidate time domain symbol location for SRS transmission.
  • the manner of obtaining the correspondence table between the number of different symbols and the time domain symbol position of the SRS transmission, or the candidate time domain symbol position of the SRS transmission includes: the base station and the UE agree in advance; the upper layer RRC signaling configuration; or, the physical layer DCI Signaling configuration, or, in a predefined manner.
  • the index number is obtained, including: a high-level RRC signaling configuration index number; or a physical layer DCI signaling configuration index number; or a high-layer RRC signaling configuration index number, and an index of the upper layer RRC signaling configuration triggered by the physical layer DCI
  • the first layer takes effect; or the upper layer RRC signaling configures the index number and takes effect after the downlink transmission burst ends the subframe; or the upper layer RRC signaling configures the index number and takes effect in the uplink transmission burst; or, the first physical layer DCI
  • the SRS transmission is triggered, and the second physical layer DCI signaling configures an index number.
  • the sub-frame number sent by the second physical layer DCI signaling of the index number and the specific timing relationship may determine the subframe position where the index number is valid.
  • Method 2 Determine the time domain symbol position of the SRS transmission by means of display, or the candidate time domain symbol position of the SRS transmission.
  • the way to display including:
  • the period and offset of the SRS transmission are configured by the upper layer RRC signaling (the basic unit of the period of the SRS transmission is a symbol), and the time domain symbol position of the transmitted SRS in one subframe is determined by the period and offset of the SRS transmission.
  • the candidate time domain symbol position of the SRS is transmitted; wherein the time domain symbol position of the SRS transmission or the subframe in which the candidate time domain symbol position is located may also be configured by high layer RRC signaling. or,
  • the time window length of the SRS transmission is configured by the upper layer RRC signaling, and/or the start position (symbol position, or time domain subframe position) of the SRS transmission time window, and/or, within the time window of the SRS transmission Offset, and/or SRS time domain resource interval in the time window of the SRS transmission (the SRS time domain resource may be a time domain symbol resource or a time domain subframe resource), and the information configured by the upper layer RRC determines the SRS transmission. Time domain symbol position, or candidate time domain symbol position. or,
  • Configuring high-frequency RRC signaling configuring a start of a time domain symbol position of the SRS transmission, and/or a time domain symbol end position of the SRS transmission, and/or a time domain symbol interval of the SRS transmission, and/or a time domain of the SRS transmission
  • the number of symbols determines the time domain symbol position of the SRS transmission, or the candidate time domain symbol position; or,
  • Physical layer DCI signaling eg, UE-specific DCI signaling, eg, DCI format 0/4; or, common DCI signaling, eg, DCI format 1C; or, group downlink control information, Group DCI signaling, eg, DCI Format 3/3A; or downlink downlink control information DL DCI signaling, for example, DCI format 1A/2B/2C/2D; or, new DCI signaling, for example, a new format other than DCI foramt; Configuring a time domain symbol position of the SRS transmission, or a candidate time domain symbol position, wherein an SRS transmission is added in the physical layer DCI signaling. Field of time domain location or candidate time domain location; or,
  • Physical layer DCI signaling configuring a time domain symbol start position of the SRS transmission, and/or a time domain symbol interval of the SRS transmission, and/or a number of time domain symbols of the SRS transmission determining a time domain symbol position of the SRS transmission, or , the candidate time domain symbol position; or,
  • Physical layer DCI signaling configuring the period and offset of the SRS transmission (where the basic unit of the SRS transmission period is a symbol), and determining the time domain symbol position of the SRS transmitted in the subframe by the period and offset of the SRS transmission, Alternatively, the candidate time domain symbol position of the SRS is transmitted.
  • the time domain symbol position of the SRS transmission, or the subframe in which the candidate time domain symbol position is located may also be configured by physical layer DCI signaling; or
  • Physical layer DCI signaling configuring the time window length of the SRS transmission, and/or the starting position (symbol position, or time domain subframe position) of the SRS transmission time window, and/or, within the time window of the SRS transmission Offset, and/or SRS time domain resource interval in the time window of SRS transmission (SRS time domain resource may be time domain symbol resource, or time domain subframe resource), determined by information configured by physical layer DCI signaling The time domain symbol position of the SRS transmission, or the candidate time domain symbol position; or,
  • the upper layer RRC signaling configures the time domain symbol position of the SRS transmission; or the candidate time domain symbol position; or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window
  • the time domain symbol end position of the SRS transmission, and/or the time domain symbol interval of the SRS transmission, and/or the number of time domain symbols of the SRS transmission, and the message triggered by the physical layer DCI signaling to trigger the high layer RRC signaling configuration takes effect; or,
  • the upper layer RRC signaling configures the time domain symbol position of the SRS transmission; or the candidate time domain symbol position; or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window
  • the message triggering the configuration of the upper layer RRC signaling takes effect, and the SRS is triggered to perform one transmission, or multiple transmissions; or,
  • the upper layer RRC signaling configures the time domain symbol position of the SRS transmission; or the candidate time domain symbol position; or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window
  • the upper layer RRC signaling configures the time domain symbol position of the SRS transmission; or the candidate time domain symbol position; or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window
  • the upper layer RRC signaling configures the time domain symbol position of the SRS transmission; or the candidate time domain symbol position; or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window
  • the first physical layer DCI signaling configures the symbol position of the SRS transmission, or the candidate time domain symbol position, or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time The starting position of the window, and/or the offset within the time window of the SRS transmission, and/or the SRS time domain resource interval within the time window of the SRS transmission; or, the start of the time domain symbol position of the SRS transmission, and / Or, the time domain symbol end position of the SRS transmission, and/or the time domain symbol interval of the SRS transmission, and/or the number of time domain symbols of the SRS transmission, the second physical layer DCI signaling triggering the first physical layer DCI signaling
  • the configured information takes effect; or,
  • the first physical layer DCI signaling triggers the SRS transmission
  • the second physical layer DCI signaling configures the symbol position of the SRS transmission, or the candidate time domain symbol position, or the period and offset of the SRS transmission; or, the SRS transmission
  • the physical layer DCI signaling configures the symbol position of the SRS transmission, or the candidate time domain symbol position, or the period and offset of the SRS transmission; or the time window length of the SRS transmission, and/or the SRS transmission time window a starting location, and/or an offset within a time window of the SRS transmission, and/or an SRS time domain resource interval within a time window of the SRS transmission; or, a start of a time domain symbol position of the SRS transmission, and/or, The time domain symbol end position of the SRS transmission, and/or the time domain symbol interval of the SRS transmission, and/or the number of time domain symbols of the SRS transmission, the message of the physical layer DCI signaling configuration is at the end of the downlink transmission burst end subframe Or, the uplink transmission burst is valid.
  • Method 3 Determine the time domain symbol position of the SRS transmission in an implicit manner, or the candidate time domain symbol position of the SRS transmission.
  • the symbol position of the SRS transmission is: symbol index #13 or symbol index #12 or symbol index #11 or symbol index #10, or the like, or
  • the time domain symbol position implicitly determining the candidate is: symbol index #13, symbol index #11, symbol index #9 or symbol index #10, symbol index #12, or implicitly determining the period and offset of the SRS transmission.
  • the amount thus determines the SRS symbol position, or the candidate time domain symbol position, for example, for 6 symbols, the time domain symbol positions determined by period 2 and offset 2 are 10 and 12.
  • the period is less than the number of symbols, and the offset is less than or equal to 0, and is greater than or equal to the number of symbols.
  • the number of symbols may be the number of symbols remaining in the subframe at the end of the downlink transmission burst.
  • the time domain symbol start position of the SRS transmission is implicitly determined. For example, for 6 symbols, the time domain symbol start position of the SRS transmission is a symbol index of 10.
  • there is an offset between the number of remaining symbols and the start position of the time domain symbol of the SRS transmission, and the offset of the time domain symbol of the initial SRS transmission is determined by the offset, and the offset may be the base station and the UE.
  • a method for determining a time domain subframe position or a candidate time domain subframe position to which a time domain symbol position or a candidate time domain symbol position of the SRS is transmitted includes:
  • Solution 1 Configuration through high-level RRC signaling. among them,
  • the parameters for SRS transmission configured by the upper layer RRC signaling are effective immediately upon configuration; or,
  • the parameters for SRS transmission configured by the upper layer RRC signaling are valid during the uplink transmission burst;
  • the parameters for SRS transmission include at least one of the following: period, offset, transmission comb, cyclic shift, symbol index of LBT, time domain pattern of SRS transmission, time window of SRS transmission, time window offset Shift, time window interval, start position of SRS transmission time window, one transmission, multiple transmission.
  • Solution 2 Configuration through physical layer DCI signaling. among them,
  • the physical layer DCI signaling that triggers the SRS transmission is sent on the subframe n, and the time domain subframe position or the candidate time domain subframe position is determined according to a predetermined timing relationship;
  • the physical layer DCI signaling carries a field indicating a time domain subframe position or a candidate time domain subframe position, and determines a time domain subframe position or a candidate time domain subframe position according to the field.
  • the predetermined timing relationship includes: n+k; or, n+k1; k is a positive integer greater than or equal to 4; and k1 is a positive integer greater than or equal to zero.
  • the k or k1 may be obtained by at least one of the following methods: a high layer RRC signaling configuration; a physical layer DCI signaling indication; and a base station and a UE pre-agreed mode.
  • Solution 3 A combination of high-level RRC signaling and physical layer DCI signaling. among them,
  • the high-layer RRC signaling configures parameters for SRS transmission, and the parameters for the SRS transmission configured by the physical layer DCI signaling triggering the high-layer RRC signaling are valid;
  • the high layer RRC signaling configures at least one of parameters for SRS transmission, and the physical layer DCI signaling configures parameters of the unconfigured SRS transmission of the upper layer RRC signaling;
  • the high-layer RRC signaling configures at least one of the parameters for the SRS transmission, and the physical layer DCI signaling carries a field indicating a time domain subframe position or a candidate time domain subframe position of the SRS transmission, and is determined according to the field for the SRS.
  • the high layer RRC signaling configures at least one of parameters for SRS transmission, the physical layer DCI signaling triggers the SRS transmission and/or determines the time domain subframe position or the candidate time domain subframe position for the SRS transmission according to a predetermined timing relationship. ;
  • the parameters for SRS transmission include at least one of the following: period, offset, transmission comb, cyclic shift, symbol index of LBT, time domain pattern of SRS transmission, time window of SRS transmission, time window offset Shift, time window interval, start position of SRS transmission time window, one transmission, multiple transmission.
  • Solution 4 A method of combining DC physical signaling by N times. among them,
  • the time domain subframe position or the candidate time domain subframe position of the SRS transmission is configured by the first physical layer DCI signaling, and the information of the first physical layer DCI signaling configuration is enabled by the second physical layer DCI signaling, and/or Triggering SRS transmission by using a second physical layer DCI signaling;
  • SRS transmission is triggered by the first physical layer DCI signaling, and the time domain subframe position or the candidate time domain subframe position of the SRS transmission is determined according to a predetermined timing relationship by using the second physical layer DCI signaling;
  • the DCI signaling triggers the time domain subframe position or the candidate time domain subframe position enable of the SRS transmission determined by the first physical layer DCI signaling.
  • the SRS parameter configured by the upper layer RRC signaling or the time domain subframe position or the candidate time domain subframe position of the SRS transmission explicitly indicated by the physical layer DCI signaling is enabled in the uplink transmission burst, where
  • the parameters of the SRS transmission include at least one of the following: a period, an offset, a transmission comb, a cyclic shift, a symbol index of the LBT, a time domain pattern of the SRS transmission, a time window of the SRS transmission, and an offset within the time window. Time window interval, the starting position of the SRS transmission time window, one transmission, multiple transmissions;
  • the first uplink subframe After the downlink transmission burst, the first uplink subframe;
  • the second uplink subframe After the downlink transmission burst, the second uplink subframe;
  • the uplink subframe index in the uplink transmission burst is an even-numbered subframe
  • the uplink subframe index in the uplink transmission burst is an odd-numbered subframe
  • the first uplink subframe in the uplink transmission burst is the first uplink subframe in the uplink transmission burst
  • the uplink subframe index in the uplink transmission burst is an even-numbered subframe
  • the uplink subframe index in the uplink transmission burst is an odd-numbered subframe.
  • the foregoing configuration signaling may also simultaneously configure a time domain subframe or a candidate subframe of the SRS transmission and/or configure a time domain of the SRS transmission. Symbol position or candidate time domain symbol position.
  • the time domain subframe position or the candidate time domain subframe position of the SRS transmission and/or the time domain symbol position or the candidate time domain symbol position of the SRS transmission may be triggered and/or determined by N physical layer DCI signaling manners.
  • N may be a positive integer greater than or equal to 1, for example, N is 2.
  • the N may have physical layer DCI signaling, or RRC signaling configuration, or the base station and the UE agree in advance, or obtain or determine in a predefined manner.
  • the SRS transmission may be triggered by the physical layer DCI signaling, and the time domain subframe position or the candidate time domain subframe position of the SRS transmission may be determined by the secondary physical layer DCI signaling (eg, the common DCI signaling, that is, the DCI format 1C). And/or, the time domain symbol position of the SRS transmission or the candidate time domain symbol position. or,
  • the SRS transmission may be triggered by the physical layer DCI signaling, and the time domain subframe position of the trigger signaling subframe and the SRS transmission or the candidate time domain subframe position is determined according to a specific timing relationship, and the secondary physical layer is adopted.
  • the DCI signaling e.g., the common DCI signaling, DCI format 1C
  • the SRS transmission may be triggered by physical layer DCI signaling and indicate the time domain subframe position of the SRS transmission or the candidate time domain subframe position, and the secondary physical layer DCI signaling (eg, common DCI signaling, ie DCI format 1C) ) Configure the time domain symbol position of the SRS transmission or the candidate time domain symbol position.
  • the secondary physical layer DCI signaling eg, common DCI signaling, ie DCI format 1C
  • the physical layer DCI signaling in the embodiment of the present invention includes one of the following: UE-specific DCI signaling, for example, DCI format 0/4; or common DCI signaling, for example, DCI format 1C; or group downlink control information.
  • Group DCI signaling for example, DCI format 3/3A; or downlink downlink control information DL DCI signaling, such as DCI format 1A/2B/2C/2D; or, new DCI signaling, for example, except a new format other than the DCI foramt; that is, an SRS time domain subframe, or a candidate SRS time domain subframe field may be added in the physical layer DCI signaling, and/or a time domain symbol position indicating the SRS transmission may be added, or a candidate SRS time domain symbol location field, and/or a field for triggering the SRS to perform a transmission, or multiple transmissions, and/or a field to increase the k value indicating the timing relationship.
  • the index number is configured by the upper layer RRC, and the physical layer DCI signaling triggers the SRS transmission.
  • the SRS time domain transmission location corresponding to the high-level RRC signaling configuration index number or the candidate time domain location of the SRS transmission includes two types: one is effective immediately after the high-layer RRC signaling configuration; and the other is through the physical layer DCI signaling. Trigger it to take effect.
  • the index number corresponding to the SRS time domain transmission location of the high layer RRC signaling configuration is the index in the table defined in Embodiment 1.
  • the physical layer DCI signaling that triggers the SRS transmission determines the time domain subframe position of the SRS transmission according to the n+k timing relationship in the subframe n, or the time domain subframe set location of the SRS transmission, or The position of the subframe where the index number is in effect.
  • k can be a positive integer
  • k can be a positive integer set.
  • k may be a positive integer greater than or equal to 0, or a positive integer greater than or equal to 4, or k is 0, and/or, 1, and/or, 2, and/or, 3, and/or 4, and / or, 5, and / or, 6, and / or, 7, or, k is a set, such as ⁇ 1,2,3,4,5,6,7,8 ⁇ .
  • Physical layer DCI signaling including: UE-specific DCI signaling (eg, format 0/4 signaling); or, common DCI signaling (eg, format 1C); or, group (group) DCI signaling (eg, Format 3/3A); or, DL grant (eg, format 1A/2B/2C) signaling.
  • UE-specific DCI signaling eg, format 0/4 signaling
  • common DCI signaling eg, format 1C
  • group (group) DCI signaling eg, Format 3/3A
  • DL grant eg, format 1A/2B/2C
  • the RRC signaling configuration table 1 has the sequence number 3 (that is, the position of the OFDM symbol index number 13 in the high-layer RRC configuration subframe is the SRS transmission time domain symbol position).
  • the SRS is transmitted over the physical layer DCI signaling on which time domain subframes, or by configuring the time domain location of the SRS transmission by using higher layer RRC signaling.
  • the physical layer DCI signaling of the SRS transmission is triggered, such as UE-specific DCI signaling (eg, format 0/4 signaling), or group DCI signaling (eg, format 3/3A), or DL grant (eg, , format 1A/2B/2C) signaling is transmitted in subframe n, and the time domain position of the SRS transmission is determined according to the timing relationship of n+k1 (where k1 is 4) in the LTE protocol. Further, the SRS transmission time domain subframe determined according to the n+k1 timing relationship is the last partial subframe of the downlink transmission burst end, and the physical layer DCI signaling that triggers the SRS transmission should be at the end of the downlink transmission burst end subframe.
  • UE-specific DCI signaling eg, format 0/4 signaling
  • group DCI signaling eg, format 3/3A
  • DL grant eg, format 1A/2B/2C
  • FIG. 3 is a schematic diagram of determining a time domain subframe position of an SRS transmission according to a timing relationship n+k according to an embodiment of the present invention.
  • FIG. 3 in order to ensure that an SRS is transmitted on a subframe at the end of a downlink transmission burst, Schematic diagram of a subframe transmitted by DCI signaling that triggers SRS transmission.
  • the DCI signaling for triggering the SRS transmission in the LTE protocol is transmitted in the subframe n, and the time domain subframe position of the SRS transmission is determined according to the n+4 timing relationship.
  • the uplink RRC signaling is configured.
  • the SRS transmits the symbol position, and the UE transmits the SRS on the symbol position in the time domain subframe of the SRS transmission.
  • the premise is that the LBT mechanism is performed before the SRS symbol position, and if the UE performs the LBT successfully before the SRS symbol position, the UE is in the SRS.
  • the SRS is transmitted on the symbol.
  • the UE fails to perform LBT before the SRS symbol position, the UE does not transmit the SRS on the SRS symbol. Alternatively, the UE does not perform LBT before the SRS symbol position, as long as the gap between the downlink transmission burst end position and the SRS symbol position is not greater than 16 us, or 25 us. If the subframe where the symbol position of the SRS transmission is located in the MCOT (the MCOT can be regarded as the downlink transmission burst+uplink transmission burst, or the MCOT considers it to be an independent downlink transmission burst, or the MCOT considers it to be an independent uplink transmission burst), then The 25-times Cat2LBT is executed before the time domain symbol of the SRS transmission.
  • the MCOT can be regarded as the downlink transmission burst+uplink transmission burst, or the MCOT considers it to be an independent downlink transmission burst, or the MCOT considers it to be an independent uplink transmission burst), or
  • the first subframe located within the MCOT performs Cat4LBT before the time domain symbol or subframe of the SRS transmission.
  • priority level 1 for example, the maximum contention window is 5, the minimum contention window 0, n in the defer period is 0, or 1, 1, or 2), or, priority Level 2 (eg, the maximum contention window is 7, the minimum contention window 3, n in the defer period is 0, or, 1, or 2).
  • priority of the uplink signal or channel is: SRS>PUSCH+SRS>PUSCH.
  • the parameter n in the LBT mechanism, and/or the random backoff value N is configured by physical layer DCI signaling, or higher layer RRC signaling.
  • a DL grant eg, format 1A/2B/2C
  • a common DCI signaling eg, format 1C
  • a k of 0 indicates that DCI signaling for triggering the SRS transmission is transmitted on the subframe n, and it is determined that the subframe of the SRS transmission is also the subframe n. If k is 1, it means that the DCI signaling that triggers the SRS transmission is sent on the subframe n, and the SRS transmission is determined to be on the subframe n+1 according to the n+1 relationship. At this time, which symbol in the determined SRS transmission time domain subframe is transmitted by the UE is determined by the upper layer RRC signaling.
  • 4 is a first schematic diagram of determining a time domain subframe position of an SRS transmission according to a timing relationship n+k1 according to an embodiment of the present invention
  • FIG. 5 is a method for determining an SRS according to a timing relationship n+k1 according to an embodiment of the present invention
  • a second schematic diagram of the time domain subframe position of the transmission as shown in FIG. 4, or as shown in FIG.
  • Example 2 differs from Example 1 in that the UE has multiple candidate SRS transmission time domain symbol positions. Assume that the sequence number 174 in the high-layer RRC signaling configuration table 12 (ie, the position of the OFDM symbol index number in the high-layer RRC configuration subframe is 13, 10, 6, 5 is the candidate SRS transmission time domain symbol position).
  • the SRS is transmitted over the physical layer DCI signaling on which time domain subframes, or by configuring the time domain location of the SRS transmission by using higher layer RRC signaling.
  • physical layer DCI signaling that triggers SRS transmission such as UE-specific DCI signaling (eg, format 0/4 signaling), or group DCI signaling (eg, format 3/3A), or DL grant (eg, format 1A/2B/2C) signaling, or common DCI signaling (eg, format 1C) is transmitted in subframe n, which determines the timing relationship of the time domain location of the SRS transmission, which may be in accordance with the existing n+ 4, or, according to the new n + k (where k is greater than or equal to 0, or, k is a positive integer greater than or equal to 4) timing relationship, the method is the same as the example 1.
  • UE-specific DCI signaling eg, format 0/4 signaling
  • group DCI signaling eg, format 3/3A
  • DL grant eg, format 1A/2B/2C
  • common DCI signaling eg, format 1C
  • the UE in the candidate SRS transmission time domain symbol position, if the UE performs LBT success before the first candidate symbol position, the UE transmits the SRS on the first symbol position. Conversely, if the UE performs LBT failure before the first candidate symbol position (LBT mechanism LBTCat4, and the maximum contention window is 5, the minimum contention window is 1, n is 1 in the defer period. Or, the LBT mechanism is 25us Cat2) Then, the UE abandons the transmission of the SRS at the first symbol position.
  • the LBT mechanism performed before the next candidate SRS symbol position may be the same as the LBT mechanism performed before the previous SRS symbol position, or before the previous SRS symbol position
  • the LBT mechanism is more simplified, or the LBT mechanism or parameters of the faster access channel (LBT mechanism LBT Cat4, and the largest competition)
  • the contention window is 3, the minimum contention window is 0, n is 0 in the defer period, or 1, or the LBT mechanism is 25us Cat2)). If the LBT is successful, the UE transmits on the current SRS symbol. Conversely, the LBT fails and the UE continues to attempt to perform LBT before the next SRS symbol position. Repeat the above method.
  • the UE successfully transmits the SRS on one of the candidate SRS symbols, and the symbol position of the other candidate transmission SRS is invalid for the UE, or the UE continues to perform the LBT before the candidate SRS symbol position, and the LBT succeeds. Next, send the SRS.
  • At least one of the SRS transmission symbol positions determined by the configuration may be a symbol in the downlink partial subframe, or the UE A side LBT failure causes the configured SRS symbol location to be undeliverable. This limits the chances of SRS transmission in partial subframes to some extent.
  • Manner 2 The physical layer DCI signaling triggers the SRS transmission, and notifies the symbol position of the SRS transmission, or the candidate SRS transmission symbol position.
  • the SRS transmission time domain subframe is determined by DCI signaling, or the SRS transmission time domain subframe collection location passes a specific timing relationship.
  • the specific timing relationship includes one of the following: an n+4 timing relationship in the LTE protocol; or, according to a new definition relationship n+k. Where k is greater than or equal to 0, or k is a positive integer greater than or equal to 4, for example, k is 0, 1, 2, 3, 4, 5, 6, and the like.
  • the time domain subframe position of the SRS transmission is determined by the timing relationship, or the candidate SRS transmits the symbol position in the same manner as in the first method.
  • the parameter k in a specific timing relationship may be determined by physical layer DCI signaling, or higher layer RRC signaling.
  • the difference from the method one is that the base station notifies which of the time domain subframes transmitted by the UESRS through the DCI signaling, or which symbols transmit the SRS.
  • the base station only needs to notify the sequence index number in the table in the embodiment to know the time domain symbol position of the SRS transmission, or the candidate SRS transmission time domain symbol position.
  • the base station can know the number of symbols remaining in the subframe at the end of the downlink transmission burst, so that the UE can be notified from the table in Embodiment 1 of the SRS transmission symbol position corresponding to the number of remaining symbols, or the candidate SRS transmission symbol. position.
  • Manner 3 The physical layer DCI signaling triggers the SRS transmission, and the number of remaining symbols acquired by the UE through the checked common DCI implicitly determines the time domain symbol position of the SRS transmission, or the time domain symbol position of the candidate SRS transmission.
  • the SRS transmission can be triggered by one physical layer DCI signaling, and the time domain subframe position of the SRS transmission, or the candidate SRS transmission time domain subframe position can still be determined by a specific timing relationship.
  • the specific timing relationship is one of the following:
  • the time domain subframe position of the SRS transmission is determined by the timing relationship, or the candidate SRS transmits the symbol position in the same manner as in the first method.
  • the parameter k in a specific timing relationship may be determined by physical layer DCI signaling, or higher layer RRC signaling.
  • the symbol position of the UE transmitting the SRS in the downlink end subframe may be implicitly determined according to the number of remaining symbols known by the common DCI signaling checked by the UE, or determined in a predefined manner, or the base station and the UE Determined in advance by way of agreement.
  • Implicitly determining the symbol position of the transmitted SRS including one of the following: the last symbol in the last part of the downlink transmission burst, or the second to last symbol in the last part of the downlink transmission burst, or downlink transmission
  • One symbol, or the symbol index in the last partial subframe of the downlink transmission burst is an even symbol, or the symbol index in the last partial subframe of the downlink transmission burst is an odd symbol, or a specific symbol set.
  • a specific symbol, or a specific symbol set may be previously agreed by the base station and the UE, or a predefined manner, or a high layer RRC configuration, or a physical layer DCI notification.
  • the UE may implicitly determine the last one of the remaining three symbols, or the first symbol, or the second, according to the remaining three symbols.
  • the symbols, or the first symbol and the third symbol, or the second symbol and the third symbol are the time domain symbol positions of the SRS transmission.
  • Manner 4 The first physical layer DCI signaling triggers the SRS transmission, and the second physical layer DCI indicates the sequence index of the SRS transmission.
  • the first physical layer DCI signaling only triggers the SRS transmission but passes through the second physical layer.
  • the DCI determines the time domain subframe or candidate time domain subframe position of the SRS transmission, and, the symbol position of the SRS transmission, or the candidate SRS transmission symbol position.
  • 6 is a first DCI signaling trigger SRS transmission according to an embodiment of the present invention.
  • the second DCI signaling is determined according to an n+k or n+k1 timing relationship, and the time domain subframe position and/or SRS transmission time of the SRS transmission is determined according to an n+k or n+k1 timing relationship.
  • a schematic diagram of the location of the domain symbol as shown in Figure 6.
  • the time domain subframe sent by the first physical layer DCI signaling is located before the second physical layer DCI signaling transmission time domain subframe position.
  • the time domain subframe sent by the first physical layer DCI signaling may also be located after the second physical layer DCI signaling transmission time domain subframe position. That is to say, the former triggers the SRS transmission first, and the time domain subframe position of the SRS transmission, or the time domain subframe position of the candidate SRS transmission, and the sequence index number of the SRS transmission are notified by the secondary physical layer DCI. Give the UE.
  • the sequence index of the SRS transmission is the sequence index number in the table in Embodiment 1.
  • the latter firstly informs the UE through a physical layer DCI signaling to determine the time domain subframe position of the SRS transmission according to a specific timing relationship, or the time domain subframe position of the candidate SRS transmission, and the sequence index number of the SRS transmission.
  • the second physical layer DCI signaling triggers the time domain subframe position of the SRS transmission configured by the first physical layer DCI signaling, or the time domain subframe position of the candidate SRS transmission, and the sequence index of the SRS transmission The number is enabled.
  • the first physical layer DCI signaling, and/or the second physical layer DCI signaling may determine a time domain subframe or a candidate time domain subframe position of the SRS transmission by using a specific timing relationship.
  • the specific timing relationship is one of the following: an n+4 timing relationship in the LTE protocol; or, according to a new definition relationship n+k. k is greater than or equal to 0, or k is a positive integer greater than or equal to 4, for example, k is 0, 1, 2, 3, 4, 5, 6, and the like.
  • the time domain subframe position of the SRS transmission is determined by the timing relationship, or the candidate SRS transmits the symbol position in the same manner as in the first method.
  • the parameter k in a specific timing relationship may be determined by physical layer DCI signaling, or higher layer RRC signaling.
  • FIG. 7 is a first DCI signaling triggering SRS transmission according to an embodiment of the present invention, and indicating a time domain subframe position of an SRS transmission according to an n+k timing relationship, where the second DCI signaling determines an SRS transmission according to an n+k1 timing relationship.
  • Schematic diagram of the time domain symbol position as shown in FIG. 7, the first physical layer DCI signaling determines the time domain subframe of the SRS transmission or the candidate time domain subframe position, and the second physical layer DCI indicates the symbol position of the SRS transmission. Or, the candidate SRS transmits the symbol position.
  • the first physical layer DCI signaling triggers SRS transmission
  • the second physical layer DCI indicates UE Determining a time domain subframe or a candidate time domain subframe position of the SRS transmission according to a specific timing relationship, a symbol position of the SRS transmitted by the UE in the end portion of the downlink burst, or a symbol position of the candidate transmission SRS may be detected by the UE.
  • the number of remaining symbols learned by the public DCI signaling is implicitly determined.
  • the triggering of the SRS transmission according to the first physical layer DCI signaling means that the UE can transmit the SRS in the SRS transmission time domain subframe after receiving the triggering SRS transmission signaling.
  • the time domain subframe or the candidate time domain subframe position of the SRS transmission is determined by the second physical layer DCI signaling according to a specific timing relationship.
  • Manner 6 triggering and explicitly notifying the time domain subframe of the SRS transmission or the candidate time domain subframe position by the physical layer DCI signaling, and/or transmitting the symbol position of the SRS or the symbol position of the candidate transmission SRS.
  • Case 1 The physical layer DCI signaling explicitly informs the time domain subframe of the SRS transmission or the candidate time domain subframe position and the symbol position of the SRS in the SRS transmission subframe, or the symbol position of the candidate transmission SRS.
  • Case 2 The time domain subframe or the candidate time domain subframe position of the SRS transmission is triggered and explicitly notified by the physical layer DCI signaling, and the symbol position of the SRS in the downlink subframe at the end of the downlink burst, or the candidate transmission SRS The symbol position is implicitly determined by detecting the number of remaining symbols by detecting the common DCI signaling.
  • the method of implicitly determining the time domain symbol position of the SRS transmission, or the candidate time domain symbol position is the same as the method in the other methods in this embodiment.
  • Method 7 triggering SRS transmission by physical layer DCI signaling, determining a time domain subframe or a candidate time domain subframe position of the SRS transmission by an implicit manner, and/or transmitting a symbol position of the SRS, or a candidate transmission SRS Symbol location.
  • the implicit manner determines the time domain subframe of the SRS transmission or the candidate time domain subframe position, and/or the symbol position of the transmission SRS includes: a downlink subframe at the end of the downlink transmission, and/or a downlink transmission burst After the first uplink subframe, and/or, after the downlink transmission burst, the second a subframe, and/or a subframe in which an uplink subframe index number after the downlink transmission burst is an even number, and/or an uplink subframe index number after the downlink transmission burst is an odd subframe, or first The uplink subframe, and/or the second uplink subframe, and/or the subframe in which the uplink subframe index number is an even number, and/or the subframe in which the uplink subframe index number is an odd number.
  • the uplink subframe index number after the downlink transmission burst is an even-numbered subframe, and/or the uplink subframe index number after the downlink transmission burst is an odd-numbered subframe, and/or the uplink subframe index number is The even-numbered subframes, and/or the number of subframes corresponding to the odd-numbered subframe index numbers, are related to M.
  • M is a subframe corresponding to an even subframe index of the downlink transmission burst, and/or a subframe corresponding to an odd subframe index of the uplink transmission burst, and/or an uplink subframe index
  • the number is an even-numbered subframe, and/or the number of subframes in which the uplink subframe index number is an odd number.
  • M may be configured by high-layer RRC signaling, or physical layer DCI signaling, or the base station and the UE may reserve in advance, or may be determined in a predefined manner.
  • the method of implicitly determining the time domain symbol position of the SRS transmission, or the candidate time domain symbol position is the same as the method in the other methods in this embodiment.
  • the time domain subframe position of the SRS transmission is determined by one of the above methods, and/or the time domain symbol position of the SRS transmission. Further, different UEs may configure the same SRS transmission symbol position, or the candidate SRS transmission symbol position. For different UEs to transmit on the same SRS time domain symbol, they can be multiplexed in the same symbol by cyclic shifting, and/or transmission combing. Cyclic shifts employed by different UEs, and/or transmission combs may be configured by higher layer RRC signaling, and/or physical layer DCI signaling.
  • the transmission comb tooth value range is [0, 1], or, [0, 3], or, [0, s2] .
  • s1 is a positive integer greater than or equal to 7.
  • S2 is a positive integer greater than or equal to 3.
  • the physical layer DCI signaling in the embodiment of the present invention includes: UE-specific DCI signaling (for example, format 0/4 signaling); or, common DCI signaling (for example, format 1C); or, group DCI signaling. (eg, format 3/3A); or, DL grant (eg, format 1A/2B/2C) signaling.
  • UE-specific DCI signaling for example, format 0/4 signaling
  • common DCI signaling for example, format 1C
  • group DCI signaling. eg, format 3/3A
  • DL grant eg, format 1A/2B/2C
  • a method for transmitting SRS on different SRS symbol positions, or the same SRS symbol position, or the same candidate SRS symbol position is provided.
  • Case 1 A method in which the UE transmits an SRS for the case where the same one SRS symbol position is configured for different UEs.
  • the SRS transmission symbol is the last symbol of the remaining 6 symbols (eg, symbol index #13), and the manner of SRS transmission includes one of the following:
  • Manner 1 Different UEs perform LBT before the SRS symbol position and introduce a self-delay mechanism. Among them, the self-delay can be in the LBT mechanism, or at the end of the LBT mechanism. 8 is a schematic diagram of introducing a self-delay operation in an LBT mechanism when different UEs configure time-domain symbol positions of the same SRS transmission according to an embodiment of the present invention. As shown in FIG. 8, different UEs may be configured with the same LBT mechanism. And/or, a collection of LBT parameters. For example, UE1 and UE2 configure the same LBT Cat4 mechanism with a random backoff value of N, n in the defer period.
  • the self-delay mechanism may be that the UE detects that the N value is decremented to 1 and starts from the delay until the SRS symbol, and the 9s before the SRS symbol can transmit the SRS in the SRS symbol as long as the UE detects the channel idle.
  • the self begins to perform a self-delay after the delay of the value of N decreases to zero.
  • the minimum granularity of the self-delay is 9 us, that is, the self-delay time domain length is an integer multiple of 9 us, or is an integer multiple of the specific CCA (Clear Channel Assessment) duration.
  • the specific CCA duration can be 16us, or 25us.
  • different UEs may use Cat2LBT to perform multiple CCA durations between the downlink transmission burst end symbol position and the SRS symbol position.
  • the number of times the CCA duration is executed is equal to the value of the downlink transmission burst end symbol position to the SRS symbol position duration divided by the CCA duration.
  • the downlink transmission symbol position to the SRS symbol position duration is not an integer multiple of the CCA duration, and the UE performs a CCA detection of the remaining duration for the remaining duration, and the CCA duration is the remaining duration.
  • the CCA duration can be 16us, or 25us, or 34us, or 43us.
  • the UE may directly send the SRS without performing the LBT mechanism.
  • FIG. 9 is a schematic diagram of a time domain structure in a subframe at the end of a downlink transmission burst according to an embodiment of the present invention. As shown in FIG. 9, when the downlink transmission burst end time reaches the start of the occupation signal, the gap is not greater than 16 us, or 25 us.
  • the UE may directly transmit the occupation signal without performing the LBT mechanism.
  • the occupied signals sent by different UEs may be multiplexed by frequency division, or may be multiplexed by code division by using different cyclic shift modes. That is, CCA gap1 can be omitted. Further, different UEs may use the same LBT mechanism in CCA gap2, and/or the LBT parameter set for channel access.
  • different UEs are configured with the same SRS symbol position, wherein different UEs may transmit different cyclic shifts and/or different transmission combs in the same SRS symbol.
  • Cyclic shifts employed by different UEs, and/or transmission combs may be configured by higher layer RRC signaling, and/or physical layer DCI signaling.
  • the cyclic shift value range [0 ⁇ 7], or [0, s1] the transmission comb tooth value range is [0, 1], or, [0, 3], or, [0, s2] .
  • s1 is a positive integer greater than or equal to 7.
  • S2 is a positive integer greater than or equal to 3.
  • Case 2 A method in which the UE transmits an SRS for a different one of the SRS symbol position cases for different UEs.
  • FIG. 10 is a schematic diagram of different SRS transmission time domain symbols configured by different UEs in a downlink subframe of a downlink transmission burst according to an embodiment of the present invention.
  • different UEs configure different SRS symbol positions, and different UEs.
  • the location where the CCA is executed is a symbol before the SRS symbol position, or the first P symbols.
  • P is a symbol greater than or equal to 1, and is smaller than the number of remaining symbols of the sub-frame at the end of the downlink transmission burst minus a specific value.
  • the special value may be 1, 2, 3, 4, 5 or the number of symbols of the SRS in the subframe at the end of the downlink burst.
  • different SRSs Different UEs of symbol locations may be configured with different transmission combs, and/or, cyclically shifted, or configured with the same transmission combs, and/or cyclically shifted. Different UEs within the same SRS symbol location may be configured with different transmission combs, or cyclic shifts.
  • the cyclic shift, and/or the transmission comb can be configured by higher layer RRC signaling, and/or physical layer DCI signaling.
  • the transmission comb tooth value range is [0, 1], or, [0, 3], or, [0, s2] . Where s1 is a positive integer greater than or equal to 7.
  • S2 is a positive integer greater than or equal to 3.
  • the different SRS symbol positions of different UE configurations may be the method of configuring SRS symbol positions in Embodiment 1 and Embodiment 2.
  • Case 3 A method in which the UE transmits an SRS for the case where different UEs are configured with the same candidate SRS symbol position.
  • candidate SRS symbol positions may be continuous in the time domain or may be composed of multiple symbols discrete in the time domain.
  • SRS symbol positions for different UE configurations are the same as those for configuring SRS symbol positions in Embodiment 1 and Embodiment 2.
  • different transmission combs and/or cyclic shifts may be configured in UEs with different SRS symbol positions.
  • the UE may continue to perform the LBT and transmit the SRS, or may not transmit the SRS.
  • the SRS is sent directly without performing LBT.
  • the candidate SRS symbol locations may be discrete in the time domain.
  • the candidate SRS transmission symbol positions configured by the UE are 13, 11, 9.
  • the position of the CCA is before the symbol 9, the symbol 10, and the symbol 12.
  • the LBT may be LBT CaT4, the minimum contention window 0 or 1, the maximum contention window 5, and n is 0, or 1, in the defer period.
  • the LBT can be a Cat2LBT.
  • a specific resource is a specific RE or RB or RBG or subband. That is, UE1 sends on a specific resource. Occupancy signal or reserved signal, blank in the frequency domain except for specific resources.
  • the LBT performed by UE1 within symbol 10 may be the same as the LBT mechanism performed prior to symbol 9, or may be a more simplified LBT, or a shorter contention window. Or, Cat2LBT, and the CCA duration is 25us. If the SRS is successfully transmitted on the symbol 11, its candidate SRS symbol position transmission method is the same as above. Alternatively, if UE1 performs LBT success before symbol 9, the UE transmits SRS on symbol 9. UE1 may not transmit SRS on candidate symbols 11, 13.
  • UE1 fails to perform LBT before symbol 9, continue to execute LBT before proceeding to symbol 10, or symbol 11, wherein the LBT mechanism performed before symbol 10, or symbol 11, may be the same as the LBT mechanism performed before symbol 9 Or, it is more simplified than the LBT mechanism performed before symbol 9, or a shorter contention window, or Cat2LBT, and the CCA duration is 25us. That is, if the UE performs an LBT failure before the current SRS symbol position, the LBT mechanism performed at the next SRS symbol position may be the same as the previous SRS symbol performing the LBT mechanism, or a shorter contention window, or a more simplified LBT mechanism. For example, Cat2LBT, and the CCA duration is 25us.
  • the LBT method performed by the candidate SRS symbol position transmitting SRS is analogously the same method as described above.
  • Case 4 A method in which the UE transmits an SRS for different UEs to configure different candidate SRS symbol position cases.
  • candidate SRS symbol positions of different UE configurations may overlap, or may overlap partially, or may not overlap.
  • different UEs configure different transmission combs or cyclic shifts in partially overlapping SRS symbol positions.
  • UEs with different overlapping SRS symbol positions may be configured with the same transmission comb, or the same cyclic shift, or different transmission combs, or different cyclic shifts.
  • the CSA frequency domain pattern can be used to avoid the collision between the SRS transmission position and the CCA execution position, that is, the transmission of the SRS is combed.
  • One of them is reserved for other UEs for CCA detection. That is to say, within one symbol, SRS and CCA are multiplexed by frequency division.
  • a method of "SRS without PUSCH”, “SRS with PUSCH” and “PUSCH” simultaneously transmitting congestion between LBT and PUSCH transmissions avoiding SRS in the same uplink subframe is provided.
  • the base station configures the subframe of the SRS without PUSCH, and the base station informs the UE of the blank to the penultimate of the subframe by the physical layer DCI signaling.
  • the symbol, the second to last symbol, is used to send the SRS to perform CCA.
  • the existing SRS symbol position is modified, that is, the last symbol in the subframe is modified to the first symbol in the subframe ("SRS without PUSCH", "SRS”
  • the CCA position of "with PUSCH” and “PUSCH” is the transmission "SRS without PUSCH”, the "SRS with PUSCH” and the last symbol of the previous subframe in the "PUSCH” subframe), or the second symbol
  • SRS Without PUSCH
  • the CCA position of "SRS with PUSCH” and “PUSCH” is the transmission "SRS without PUSCH", the "SRS with PUSCH” and the first symbol in the "PUSCH” subframe).
  • the new SRS symbol position may be notified to the UE through physical layer DCI signaling, or the subframe position in which the SRS without PUSCH is transmitted implicitly determines the SRS symbol position.
  • the subframe position for transmitting the SRS without PUSCH may be shared at the cell level.
  • Physical layer DCI signaling including: UE-specific DCI signaling (eg, format 0/4 signaling); or, common DCI signaling (eg, format 1C); or, group DCI signaling (eg, format 3) /3A); or, DL grant (for example, format 1A/2B/2C) signaling.
  • This embodiment is based on the support of wideband SRS in the LAA system, and provides a solution to meet the bandwidth requirements of the ETSI when the SRS bandwidth configuration parameter C SRS ⁇ 2.
  • the bandwidth requirement in ETSI is that the transmission device transmits at least 80% of the total bandwidth on the unlicensed carrier.
  • the transmission bandwidth on the unlicensed carrier must also meet the bandwidth requirements in ETSI.
  • ETSI the bandwidth requirements in ETSI.
  • the SRS bandwidth configuration parameter C SRS is 0, 1, 2 meets the regulatory requirements that the transmission bandwidth in the ETSI accounts for at least 80% of the total bandwidth.
  • the SRS bandwidth configuration parameter C SRS is greater than 2, the SRS transmission bandwidth does not satisfy the bandwidth requirement in the ETSI.
  • the method for satisfying the requirement that the total bandwidth of the transmission bandwidth is at least 80% is as follows:
  • Method 1 The method of repeating N in the frequency domain.
  • the bandwidth of the SRS is determined according to B srs and C srs to determine the number of repetitions in the frequency domain, or the number of repetitions is signaled by the higher layer RRC or physical layer DCI.
  • B SRS 0
  • the number of repetitions in the corresponding frequency domain is 2.
  • FIG. 11 is a schematic diagram of a frequency domain repetition N satisfying an ETSI regulatory bandwidth requirement according to an embodiment of the present invention, as shown in FIG.
  • the SRS sequence is started to be mapped according to the frequency domain starting point configured by the high layer RRC signaling or the physical layer DCI signaling. If the SRS sequence is repeatedly mapped on resources with less than 80% bandwidth.
  • Method 2 Increase the length of the SRS sequence until at least 80% of the corresponding bandwidth specified in the regulation.
  • Method 3 Increase the method of transmitting comb Comb. That is, the correspondence between the transmission comb Comb and the SRS transmission bandwidth is established.
  • the transmission comb Comb may be 2, 4, 6, 8, 12, and the like.
  • Method 4 Modify the subcarrier spacing. For example, different subcarrier spacings are corresponding according to different SRS bandwidths.
  • the Msrs is a PRB corresponding to the SRS bandwidth.
  • Method 5 Use the frequency domain frequency hopping method to meet the regulatory requirements that the nominal bandwidth meets at least 80% of the total bandwidth over a period of time.
  • the frequency domain frequency hopping mode is generally the same as the existing LTE technology, except that the time domain interval of the frequency hopping is changed from the subframe level to the symbol level. That is, at the end of the downlink burst, a partial subframe The remaining symbols, or the candidate SRS time domain symbol positions, or, in the configured SRS independent transmission subframe, the SRS frequency domain frequency hopping is frequency hopping in accordance with the symbols.
  • Method 6 Using the RB interleaving method.
  • the SRS may be mapped by the method of interpolating the RB, that is, according to the frequency domain starting point, the resources corresponding to the modb are mapped according to 96 mod2 (the interval of 2 is the RB), but each PRB is mapped according to the original comb.
  • Method 7 Use block interleaving.
  • FIG. 12 is a schematic diagram of satisfying ETSI regulatory bandwidth requirements by using a block interleaving method, as shown in FIG. 12, according to an embodiment of the present invention.
  • This embodiment provides a method for processing a discontinuity of a signal transmitted by a user equipment UE in a multi-subframe scheduling scenario.
  • the symbol of the blank in the subframe is the symbol index 0 in the subframe. And/or, the PUSCH starts to transmit from the symbol index 0 in the subframe, and the PUSCH end symbol index is 12, or 11, in the case of a blank symbol in the subframe, the symbol index in the subframe is 13, or 12 and 13.
  • the PUSCH start symbol position, or the end symbol position, and/or the LBT performed symbol position may be configured by the base station to the UE through physical layer DCI signaling.
  • Method 1 implicitly instructing the UE to perform LBT at the blank symbol between the preceding and succeeding subframes.
  • LBT can Use a 25us Cat2LBT mechanism, or a DRS-like LBT mechanism, or a Cat2LBT mechanism that randomly selects the CCA starting point, or a minimum contention window of 0, a maximum contention window of 5, a deter period where n is 0, or a Cat4LBT of 1 mechanism.
  • the defer period is determined by the fixed CCA duration plus n slots. The slot is 9us and the fixed CCA is 16us.
  • Method 2 explicitly indicate that the LBT is performed at the blank symbol between the preceding and succeeding subframes through the physical layer DCI signaling.
  • the physical layer DCI signaling may indicate a symbol position at which PUSCH transmission starts, and/or a PUSCH transmission end symbol position, and/or a blank symbol position in a subframe, and/or an LBT mechanism, and/or an LBT.
  • the parameters corresponding to the mechanism such as the maximum contention window and the minimum contention window value, the random backoff value, the n value in the defer period, the CCA duration duration, and the CCA duration starting point.
  • Method 3 The UE sends a sparse reserved signal or an occupied signal at a blank symbol between the preceding and succeeding subframes.
  • a sparse reserved signal or occupied signal means that the reserved signal or the occupied signal is only in a specific frequency domain resource (RE (Resource Element) or RB (Resource Block) or RBG (Resource Block Group). Send on group) or subband).
  • RE Resource Element
  • RB Resource Block
  • RBG Resource Block Group
  • Send on group or subband
  • Some or all of the frequency domain resources except for a specific frequency domain resource in the blank symbol may be used for other UEs to perform CCA, and PUSCH transmission and/or SRS transmission may be performed if the CCA is successful.
  • the frequency domain blank resource location and/or the time domain symbol location used to perform CCA may be dynamically notified to the UE by the base station through physical layer DCI signaling.
  • Physical layer DCI signaling including: UE-specific DCI signaling (eg, format 0/4 signaling); or, common DCI signaling (eg, format 1C); or, group DCI signaling (eg, format 3/) 3A); or, DL grant (eg, format 1A/2B/2C) signaling.
  • UE-specific DCI signaling eg, format 0/4 signaling
  • common DCI signaling eg, format 1C
  • group DCI signaling eg, format 3/) 3A
  • DL grant eg, format 1A/2B/2C
  • This embodiment mainly provides a method for transmitting periodic SRS and aperiodic SRS.
  • the LAA performs opportunistic downlink or uplink transmission due to the uplink or downlink buffer state, thereby causing a discontinuity in the transmission signal.
  • the UE can perform SRS transmission at the SRS periodic point only when the UE performs the LBT successfully before the SRS periodic point and the PUSCH is present at the SRS periodic point. It is also possible that the UE can perform SRS transmission at the SRS periodic point only when the UE performs LBT success before the SRS cycle point. It is also possible to perform LBT even before the SRS cycle point of the UE. If the SRS transmission is successful, the SRS transmission cannot be performed at the SRS periodic point.
  • the SRS transmission can be attempted at the SRS periodic point only after the physical layer DCI signaling is triggered.
  • the physical layer DCI signaling triggering the SRS transmission may trigger the UE.
  • N is a positive integer greater than or equal to 1. For example, N is 1, 2, 3, 4, 5, 6, 7, 8.
  • the UE attempting to perform SRS transmission at the periodic point of the SRS means that the LBT is successfully executed before the periodic point of the SRS, and the transmission can be performed at the SRS periodic point. Conversely, if the LBT failure is performed before the SRS cycle point, the transmission cannot be performed at the SRS cycle point.
  • the time domain subframe position of the SRS transmission can be configured through physical layer DCI signaling in addition to the high layer RRC signaling configuration.
  • the subframe position of the SRS transmission or the location of the candidate SRS transmission subframe configured by the physical layer DCI signaling may be adopted by one of the following methods:
  • the physical layer DCI signaling carries a field for indicating a subframe position of the SRS transmission or a candidate SRS transmission subframe position.
  • the UE can know the time domain subframe position of the transmission SRS or the candidate time domain subframe position by receiving the DCI signaling.
  • the physical layer DCI signaling carries a field indicating a specific timing relationship value k.
  • the time domain subframe position of the SRS transmission or the candidate time domain subframe position may be determined by a specific timing relationship value.
  • the physical layer DCI signaling is sent on the subframe n, and the subframe corresponding to the n+k is determined as the time domain subframe position of the SRS transmission or the time domain of the candidate by receiving the DCI signaling and the specific timing relationship value carried.
  • Subframe position may be a value greater than or equal to 0, or may be a value greater than or equal to 4, and k is 0, 1, 2, 3, 4, 5, 6, 7, 8.
  • Manner 3 The period and the offset of the high-layer RRC signaling configuration, only when the UE receives the physical layer DCI signaling sent by the base station, the period of the high-layer RRC signaling configuration and the time-domain subframe position or candidate corresponding to the offset At least one of the domain subframe positions is valid, or, available.
  • the physical layer DCI signaling may carry indication information indicating that the SRS performs one transmission in the candidate time domain subframe, or multiple transmissions.
  • the subframe position of the SRS transmission or the candidate SRS transmission subframe position may be determined in an implicit manner.
  • the SRS when receiving the common DCI signaling, the SRS may be known to be the first subframe in the uplink transmission burst, or And transmitting the even subframe or the odd subframe corresponding to the subframe index in the transmission burst (that is, the subframe within the burst length may be correspondingly transmitted through the subframe quotation mark or uplink)
  • the subframe corresponding to one of 0, 1, 2, ..., p-1 obtained by mod p is an SRS time domain subframe or a candidate SRS time domain subframe), or, a DRS subframe, or a downlink tail portion frame.
  • the SRS transmission on the SRS time domain subframe or the candidate time domain subframes of the symbols or candidate time domain symbols may also be notified by physical layer DCI signaling, or the upper layer RRC signaling configuration, or the base station And the UE pre-determined, or, in a predefined manner.
  • the DCI signaling for determining the SRS time domain symbol or the candidate time domain symbol position, and the signaling for determining the SRS time domain subframe position or the candidate SRS time domain subframe position, and the signaling for triggering the SRS transmission may be the same One DCI signaling, or different DCI signaling.
  • the signaling for triggering the SRS transmission may multiplex the DCI format 0/4/1A/2B/2C/2D in the existing protocol, where for the SRS and the PUSCH, the trigger SRS transmission may adopt the DCI format 0. /4.
  • the triggering SRS transmission may be performed by using DCI format 2B/2C/2D, or DCI format 1C, or DCI format 3/3A.
  • DCI format 1C reserved bits may be utilized to indicate triggering SRS transmission.
  • DCI format 3/3A a field can be added to indicate the triggering of the SRS transmission.
  • a time domain subframe position or a candidate time domain subframe field of the SRS transmission is also added in the DCI format, and/or a time domain symbol of the SRS transmission or a candidate time domain symbol field is added, and/or , adding a field that triggers SRS to perform single transmission or multiple transmissions, and/or, adds a timing relationship value k.
  • the signaling that triggers the aperiodic SRS transmission triggers the SRS transmission.
  • the UE may be triggered to perform one SRS transmission, or N times SRS transmission.
  • the time domain location of the aperiodic SRS transmission may dynamically indicate the time domain subframe position of the SRS transmission or the candidate time domain subframe position through physical layer DCI signaling, in addition to the SRS periodic point configured by the upper layer RRC.
  • the DCI signaling triggering refers to triggering the SRS to transmit, and/or triggering the UE to perform an SRS transmission in a candidate time domain subframe, or may perform multiple SRS transmissions.
  • the SRS transmission cannot be performed on the time domain subframe even if the UE has successfully performed the LBT.
  • the UE If the UE performs LBT successfully before one of the candidate time domain subframes, and receives DCI signaling sent by the base station, performs an SRS transmission according to the indication in the DCI signaling, or multiple times, the SRS transmission information is in the candidate. SRS transmission is performed on multiple SRS time domain subframe positions.
  • the SRS can be directly performed on the subsequent candidate SRS time domain locations. Send without having to perform LBT.
  • the candidate multiple SRS transmission time domain locations are discrete in the time domain, once the UE performs LBT success before one of the SRS transmission time domain locations, that is, only the current SRS time domain location can be transmitted.
  • the LBT mechanism is implemented. The second is to send a sparse reserved signal or occupy signal.
  • a sparse reserved signal or occupied signal means that the reserved signal or the occupied signal is transmitted only on a specific frequency domain resource on the total bandwidth, and the remaining frequency domain resources are vacant or reserved.
  • the reason for this is that the signals transmitted by the UE between the front and rear SRS time domain locations are discontinuous, which may result in loss of use of the channel at blank symbols or subframes between the front and rear SRS time domain locations, based on which, At blank symbols or subframes between the front and back SRS time domain locations, the UE either needs to transmit an occupancy signal or needs to perform LBT.
  • the processing method of performing SRS transmission on a plurality of candidate time domain subframes is also applicable to the case of performing SRS transmission on a plurality of candidate time domain symbol positions.
  • the time domain subframe of the SRS transmission may be a downlink end subframe, or a DRS subframe, or an uplink subframe in an uplink transmission burst, or at least one of the first subframe in an uplink transmission burst.
  • the time domain symbol position for performing SRS transmission on the remaining symbols in the downlink end subframe may be configured by physical layer DCI signaling, and/or, high layer RRC signaling configuration, and/or implicitly determined according to the remaining number of symbols.
  • the base station and the UE acquire in advance by way of agreement. And transmitting the SRS in the DRS subframe means that the SRS can transmit on at least one of the remaining two symbols in the DRS subframe.
  • Physical layer DCI signaling includes: UE-specific DCI (eg, DCI format 0/4) or, DL Grant (for example, DCI format 1A/2B/2C/2D) or common DCI (for example, DCI format 1C) or group DCI (for example, DCI format 3/3A), that is, at least one of physical layer DCI signaling.
  • UE-specific DCI eg, DCI format 0/4
  • DL Grant for example, DCI format 1A/2B/2C/2D
  • common DCI for example, DCI format 1C
  • group DCI for example, DCI format 3/3A
  • the foregoing embodiment or the embodiment is not limited to the application of the subframe at the end of the downlink transmission, and may also be used for the uplink transmission end subframe, or the uplink transmission start partial subframe, or the uplink complete subframe. , or, downlink complete subframe condition, or other scenarios (for example, LAA, SDL (Standalone Downlink), SUL (Standalone Uplinke), LAA DC (Double Connection), NB-IOT ( Narrow Band Internet of Things, cellular-based narrowband Internet of Things, MTC (Machine type communication), or other situations.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present application can be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM, a magnetic disk, an optical disk), and includes a plurality of instructions for making a terminal.
  • the device (which may be a cell phone, computer, server, or network device, etc.) performs the methods of various embodiments of the present invention.
  • a signal transmission device and a user equipment are also provided, which are used to implement the foregoing embodiments and implementation manners, and are not described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware Implementation is also possible and conceived.
  • FIG. 13 is a block diagram showing the structure of a signal transmission apparatus according to an embodiment of the present invention. As shown in FIG. 13, the apparatus includes a first determination module 132 and a first transmission module 134, which will be described below.
  • a first determining module 132 configured to determine a symbol position for transmitting the sounding reference signal SRS; the first transmission module 134, coupled to the first determining module 132, configured to transmit an SRS at the determined symbol position; wherein The symbol position is a time domain symbol position or a candidate time domain symbol position.
  • the first determining module is configured to determine a symbol position for transmitting the sounding reference signal SRS according to at least one of the following manners:
  • the predetermined correspondence between the number of symbols and the position of the symbol includes at least one of the following: a correspondence between the index number and a different number of symbols and a symbol position; and a predetermined number of symbols, the index number and the symbol The correspondence between the locations.
  • FIG. 14 is a block diagram showing the structure of the first determining module 132 in the signal transmission apparatus according to the embodiment of the present invention.
  • the first determining module 132 includes: a first determining unit 142, and the first determining is performed below. Unit 142 is described.
  • the first determining unit 142 is configured to determine a symbol position for transmitting the SRS according to the acquired index number.
  • FIG. 15 is a block diagram showing the structure of the first determining module 132 in the signal transmission apparatus according to the embodiment of the present invention.
  • the first determining module 132 includes: a first acquiring unit 152, and the first obtaining is performed below. Unit 152 is described.
  • the first obtaining unit 152 is configured to obtain an index number by using at least one of the following manners: a manner of controlling RRC signaling by a high-layer radio link, a method of controlling downlink information by a physical layer downlink, and a method of using a base station and a user equipment UE in advance The agreed manner; wherein a field for indicating an index number is added in RRC signaling or physical layer DCI signaling.
  • the signaling that explicitly indicates the symbol location for transmitting the SRS includes at least one of the following signaling: high layer RRC signaling; physical layer DCI signaling, where signaling A field is included for indicating the symbol position of the SRS transmission.
  • the high-layer RRC signaling configures the SRS transmission time domain location or the candidate time domain location
  • the physical layer DCI signaling triggers the SRS time domain location configured by the high-layer RRC signaling or the candidate time domain location takes effect; or, the upper layer The SRS time domain location or the candidate time domain location configured by the RRC signaling is configured as soon as it is configured; or the SRS time domain location or the candidate time domain location configured by the upper layer RRC signaling is at the end of the downlink transmission burst or the uplink transmission. Effective in burst.
  • the physical layer DCI signaling carries a symbol location field for indicating SRS transmission; or the first physical layer DCI signaling triggers SRS transmission, and the SRS transmission is indicated by the second physical layer DCI signaling. Symbol location.
  • the first physical layer DCI signaling triggers the SRS transmission, including: the first physical layer DCI signaling carries a field for triggering the SRS transmission, where the field triggering the SRS transmission includes: triggering an SRS transmission, Or, multiple SRS transmissions.
  • the symbol position for transmitting the SRS is determined by implicitly agreeing, including at least one of: determining a symbol position for transmitting the SRS according to the number of symbols remaining in the subframe at the end portion of the downlink transmission burst; The moment when the LBT mechanism is successfully executed is determined to determine the symbol position for transmitting the SRS; the base station and the UE determine the symbol position for transmitting the SRS in a manner agreed in advance.
  • FIG. 16 is a block diagram showing the structure of a signal transmission apparatus according to an embodiment of the present invention. As shown in FIG. 16, the apparatus includes, in addition to all the modules shown in FIG. 13, a second determining module 172, which is described below. The second determination module 172 is described.
  • the second determining module 172 is connected to the foregoing first determining module 132, and is configured to determine, by at least one of the following manners, a time domain subframe position or a candidate time domain subframe position to which the symbol position for transmitting the SRS belongs: by using a higher layer RRC The mode of signaling configuration; the mode of configuration by physical layer DCI signaling; the combination of high-layer RRC signaling and physical layer DCI signaling; and the combination of N physical layer DCI signaling, where N is greater than or equal to An integer of 1; by implicit convention The way; through the way agreed by the base station and the UE in advance.
  • the second determining module 172 is configured to determine a time domain subframe position or a candidate time domain subframe position by using a high layer RRC signaling configuration, including: configuring, by using high layer RRC signaling, for SRS transmission.
  • the parameters determine the time domain subframe position or the candidate time domain subframe position; or, the parameters for SRS transmission configured by the high layer RRC signaling are effective once configured; or the parameters for SRS transmission configured by the upper layer RRC signaling
  • the parameters for the SRS transmission include at least one of the following: period, offset, transmission comb, cyclic shift, LBT symbol index, time domain pattern of SRS transmission, SRS transmission Time window, time window offset, time window interval, SRS transmission time window start position, one transmission, multiple transmission.
  • the second determining module 172 is configured to determine a time domain subframe position or a candidate time domain subframe position by using physical layer DCI signaling configuration, including at least one of the following: a physical medium that triggers SRS transmission.
  • the layer DCI signaling is sent on the subframe n, and the time domain subframe position or the candidate time domain subframe position is determined according to a predetermined timing relationship.
  • the physical layer DCI signaling carries the indication time domain subframe position or the candidate time domain subframe.
  • the field of the location determines the time domain subframe position or the candidate time domain subframe position according to the field.
  • the second determining module 172 is configured to determine a time domain subframe position or a candidate time domain subframe position by using a combination of high layer RRC signaling and physical layer DCI signaling, including at least one of the following: : high-level RRC signaling configures parameters for SRS transmission, physical layer DCI signaling triggers high-level RRC signaling configuration parameters for SRS transmission to take effect; high-layer RRC signaling configures at least one of parameters for SRS transmission The physical layer DCI signaling configures parameters of the SRS transmission that are not configured by the high-layer RRC signaling; the high-layer RRC signaling configures at least one of the parameters used for the SRS transmission, and the physical layer DCI signaling carries the time domain indicating the SRS transmission.
  • parameters for SRS transmission include at least one of the following : period, offset, transmission comb, cyclic shift, LBT symbol index, time domain pattern of SRS transmission, time window of SRS transmission, offset within time window, time Inter-window interval, the starting position of the SRS transmission time window, one transmission, multiple transmissions.
  • the second determining module 172 is further configured to determine a time domain subframe position or a candidate time domain subframe position by combining the N times physical layer DCI signaling, including at least one of the following:
  • the physical layer DCI signaling configures the time domain subframe position or the candidate time domain subframe position of the SRS transmission, and enables the information of the first physical layer DCI signaling configuration by using the second physical layer DCI signaling, and/or
  • the second physical layer DCI signaling triggers the SRS transmission; the SRS transmission is triggered by the first physical layer DCI signaling, and the time domain subframe position or the candidate time domain subframe position of the SRS transmission is indicated by the second physical layer DCI signaling;
  • the physical layer DCI signaling triggers the SRS transmission, and determines the time domain subframe position or the candidate time domain subframe position of the SRS transmission according to the predetermined timing relationship by using the second physical layer DCI signaling; the first physical layer DCI signaling according to the predetermined timing The relationship determines a time domain sub
  • the predetermined timing relationship includes: n+k; or, n+k1; wherein n is a subframe number of physical layer DCI signaling that triggers SRS transmission; k is a positive integer greater than or equal to 4; k1 Is a positive integer greater than or equal to 0.
  • k or k1 may be obtained by at least one of the following: a high-level RRC signaling configuration; a physical layer DCI signaling indication; and a base station and a UE pre-agreed mode.
  • the physical layer DCI signaling includes one of the following: UE-specific DCI signaling, using DCI format 0/4; common DCI signaling, using DCI format 1C; group downlink control information Group DCI signaling, adopting DCI format 3/3A; downlink downlink control information DL DCI signaling, using DCI format 1A/2A/2B/2C; new DCI signaling.
  • the second determining module 172 is configured to determine a time domain subframe position or a candidate time domain subframe position of the SRS transmission by using an implicit agreement, including at least one of the following: after the downlink transmission burst ends The SRS parameter configured in the upper layer RRC signaling or the time domain subframe position or the candidate time domain subframe position of the SRS transmission explicitly indicated by the physical layer DCI signaling; the last partial subframe after the downlink transmission burst; after the downlink transmission burst The first uplink subframe; after the downlink transmission burst, the second uplink subframe; after the downlink transmission burst, the uplink subframe index in the uplink transmission burst is an even-numbered subframe; after the downlink transmission burst, the uplink transmission burst is uplinked The subframe index is an odd-numbered subframe; the first uplink subframe in the uplink transmission burst; the second uplink subframe in the uplink transmission burst; the uplink subframe index in the uplink transmission burst is
  • the time domain subframe position or the candidate time domain subframe position information used to indicate the SRS transmission, and the symbol location information used to indicate the SRS transmission are in the same physical layer DCI signaling, or Different physical layer DCI signaling.
  • the foregoing first transmission module 134 is configured to transmit the SRS on the determined symbol position, including: different user equipment UEs are transmitted in the same one time domain symbol position; different UEs are different. Time domain symbol position transmission; different UEs are transmitted in the same candidate time domain symbol position; different UEs are transmitted in different candidate time domain symbol positions.
  • different UEs are multiplexed by different transmission combs and/or cyclic shifts in the case of transmissions at the same symbol position.
  • transmitting, by the different UEs in the same or different candidate time domain symbol positions comprises: stopping the candidate time domain symbol positions in a case where a predetermined time domain symbol position transmission SRS is successful in the candidate time domain symbol positions Transmitting SRS in other time domain symbol positions than the predetermined time domain symbol position; or, in the case where a predetermined time domain symbol position transmission SRS in the candidate time domain symbol position is successful, continuing to be excluded in the candidate time domain symbol position
  • the SRS is transmitted at other time domain symbol locations than the predetermined time domain symbol location.
  • FIG. 17 is a block diagram 3 of a structure of a signal transmission apparatus according to an embodiment of the present invention. As shown in FIG. 17, the apparatus includes, in addition to all the modules shown in FIG. 13, an execution module 182, and the execution module 182. Be explained.
  • the execution module 182 is connected to the first transmission module 134, and is configured to perform an LBT mechanism after the different UEs transmit in the same or different symbol positions. In the case that the LBT mechanism is successful, the first The transmission module transmits the SRS at the symbol location.
  • the execution mode The block is set to: use the same or different LBT mechanisms for different candidate time domain symbol positions, wherein when different LBT mechanisms are used, the LBT mechanism performed before the previous candidate time domain symbol position is later than the latter candidate time domain symbol position
  • the previously implemented LBT mechanism is simplified, or there is a shorter competition window.
  • the apparatus further includes: a satisfying module, configured to meet at least one of the following manners, satisfying a regulatory requirement that the SRS transmission bandwidth accounts for at least 80% of the total bandwidth: by repeating the manner in which the SRS occupies a predetermined number of times of bandwidth N, By increasing the length of the SRS sequence, by increasing the manner of the transmission comb, by modifying the subcarrier spacing, by means of frequency domain hopping, by means of resource block interleaving, by means of block interleaving.
  • a satisfying module configured to meet at least one of the following manners, satisfying a regulatory requirement that the SRS transmission bandwidth accounts for at least 80% of the total bandwidth: by repeating the manner in which the SRS occupies a predetermined number of times of bandwidth N, By increasing the length of the SRS sequence, by increasing the manner of the transmission comb, by modifying the subcarrier spacing, by means of frequency domain hopping, by means of resource block interleaving, by means of block interleaving.
  • FIG. 18 is a structural block diagram of a user equipment UE 10 according to an embodiment of the present invention. As shown in FIG. 18, the UE 10 includes the signal transmission device 192 of any of the above.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present invention also provide a storage medium.
  • the storage medium may be configured to store program code for performing the following steps:
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • the processor executes the method steps described in the above embodiments according to the program code stored in the storage medium.
  • the signal transmission method, apparatus, and user equipment of the embodiments of the present invention are not Applicable only to unlicensed carrier scenarios. It can also be applied to scenarios where licensed carriers and other types of carriers are used.
  • the modules or steps of the above embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices, which may be implemented by computing devices.
  • the executed program code is implemented such that they can be stored in a storage device by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be
  • Each of the integrated circuit modules is fabricated separately, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
  • the application is not limited to any particular combination of hardware and software.
  • the symbol position for transmitting the sounding reference signal SRS is determined, and the effect of effectively improving the transmission opportunity of the SRS is achieved.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission de signal, ainsi qu'un équipement utilisateur. Le procédé comprend : la détermination d'une position de symbole pour la transmission d'un signal de référence de sondage (SRS) ; et la transmission d'un signal SRS sur la position de symbole déterminée.
PCT/CN2017/084176 2016-05-13 2017-05-12 Procédé et dispositif de transmission de signal et équipement d'utilisateur Ceased WO2017194005A1 (fr)

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