WO2020192785A1 - Procédé et dispositif permettant d'envoyer une transmission de liaison montante, procédé et appareil permettant de planifier une transmission de liaison montante, dispositif électronique et support d'informations - Google Patents

Procédé et dispositif permettant d'envoyer une transmission de liaison montante, procédé et appareil permettant de planifier une transmission de liaison montante, dispositif électronique et support d'informations Download PDF

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Publication number
WO2020192785A1
WO2020192785A1 PCT/CN2020/082029 CN2020082029W WO2020192785A1 WO 2020192785 A1 WO2020192785 A1 WO 2020192785A1 CN 2020082029 W CN2020082029 W CN 2020082029W WO 2020192785 A1 WO2020192785 A1 WO 2020192785A1
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WIPO (PCT)
Prior art keywords
frequency domain
uplink transmission
information
resource
scheduling information
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PCT/CN2020/082029
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English (en)
Chinese (zh)
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姚珂
高波
蒋创新
鲁照华
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • 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
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communications, for example, to a method, device, electronic device, and storage medium for sending and scheduling uplink transmission.
  • the device due to the limitation of the cost of the device, only part of the antenna is used to transmit information, and the maximum transmission power capability of the device cannot be utilized. For example, a user equipment that supports a maximum of 2 antennas can only use half of the maximum power of the user equipment if only one antenna is used to send information. With the development of technology, the device performance of wireless communication equipment has been improving and the cost is decreasing. Therefore, the next-generation mobile communication system is likely to be equipped with multiple high-performance antennas, which also provides the possibility to optimize the maximum power limit.
  • the uplink MIMO transmission of the NR system is divided into two types: codebook-based transmission and non-codebook-based transmission.
  • codebook-based transmission For non-codebook-based transmission, related technologies have been able to support the use of maximum power.
  • codebook-based transmission there is no clear solution in related technologies to support the use of maximum power.
  • the embodiments of the present application provide a method, device, electronic device, and storage medium for uplink transmission, so as to at least solve the problem that there is no clear solution for codebook-based transmission in related technologies to support maximum power utilization.
  • a method for sending uplink transmission including: obtaining scheduling information of uplink transmission, and dividing frequency domain resources indicated by the scheduling information into N frequency domain resource sets;
  • the uplink transmission carried by the N frequency domain resource sets is sent with pieces of spatial resource information.
  • M and N are positive integers greater than 1.
  • a scheduling method for uplink transmission including: a second communication node sends scheduling information for uplink transmission to a first communication node, wherein the scheduling information for uplink transmission is used for Instruct the first communication node to divide frequency domain resources into N frequency domain resource sets, where N is a positive integer greater than 1, and the second communication node receives the uplink transmission sent by the first communication node.
  • a device for sending uplink transmission including: an acquisition module, configured to acquire scheduling information for uplink transmission; and a division module, configured to indicate frequency domain resources indicated by the scheduling information Divided into N frequency domain resource sets; a transmission module, configured to send the uplink transmission carried by the N frequency domain resource sets according to M spatial resource information.
  • M and N are positive integers greater than 1.
  • an uplink transmission scheduling device which is located in a second communication node, and includes: a sending module for sending uplink transmission scheduling information to the first communication node, wherein The scheduling information of the uplink transmission is used to instruct the first communication node to divide frequency domain resources into N frequency domain resource sets, where N is a positive integer greater than 1; the receiving module is used to receive the first communication node The uplink transmission sent.
  • a storage medium in which a computer program is stored, wherein the computer program is configured to execute any of the foregoing method embodiments when running step.
  • an electronic device including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute any of the foregoing. Steps in a method embodiment.
  • the scheduling information is used between the first communication node and the second communication node to indicate that the frequency domain resources for uplink transmission are divided in the form of resource sets, at the same time, the frequency domain resources carried by the frequency domain resource sets are sent according to the spatial resource information.
  • the uplink transmission Therefore, it is possible to solve the problem that there is no clear solution for codebook-based transmission to support its use of maximum power, to expand the uplink coverage area of power-limited scenarios, to avoid interference between antenna ports, and to improve uplink transmission performance.
  • Fig. 1 is a flowchart of a method for sending uplink transmission according to an embodiment of the present application
  • Fig. 2 is a schematic diagram of scheduling resource transmission according to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of another scheduling resource transmission according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of transmission based on a set of frequency domain resources according to an embodiment of the present application
  • Fig. 5 is a flowchart of a method for scheduling uplink transmission according to an embodiment of the present application
  • Fig. 6 is a structural block diagram of a device for sending uplink transmission according to an embodiment of the present application.
  • Fig. 7 is a structural block diagram of an uplink transmission scheduling apparatus according to an embodiment of the present application.
  • FIG. 1 is a flowchart of an uplink transmission sending according to an embodiment of the present application. As shown in FIG. 1, the process includes the following steps:
  • Step S102 Obtain uplink transmission scheduling information.
  • Step S104 Divide the frequency domain resources indicated by the scheduling information into N frequency domain resource sets.
  • Step S106 Send the uplink transmission carried by the N frequency domain resource sets according to the M spatial resource information.
  • M and N are positive integers greater than 1.
  • M is greater than or equal to N.
  • the airspace resource information includes at least one of the following: antenna port information, antenna panel information, transmission chain information, beam information, precoding codeword information, spatial relationship information, and reference signal information.
  • the airspace resources corresponding to the airspace resource information include: antenna ports, antenna panels, transmission chains, and beams.
  • the antenna port information includes at least one of the following: antenna port, antenna port index, antenna port grouping, antenna port grouping index.
  • the antenna panel information includes at least one of the following: antenna panel, antenna panel index, antenna panel grouping, antenna panel grouping index.
  • the transmission chain information includes at least one of the following: transmission chain (transmission chain) and transmission chain packet.
  • the beam information includes at least one of the following: beam and beam grouping.
  • a beam can refer to a resource.
  • the precoding codeword information includes at least one of the following: a precoding codeword, a precoding codeword index, a precoding codeword group, and a precoding codeword group index.
  • the precoding codeword is also referred to as a precoding matrix, which refers to one precoding codeword in a group of precoding codewords called a precoding codebook.
  • the precoding codeword index is also called TPMI (Transmitted Precoding Matrix Indicator).
  • the spatial relationship includes at least one reference signal information.
  • the reference signal information includes at least one of the following: reference signals, reference signal resources, reference signal resource sets, and reference signal resource groups.
  • the reference signal information includes at least one of the following: a reference signal index, a reference signal resource index, a reference signal resource set index, and a reference signal resource grouping index.
  • index is also called a number, an indication or an identification (identification, indicator or indication).
  • the reference signal may be an uplink reference signal or a downlink reference signal.
  • the uplink reference signal includes one of the following: sounding reference signal (Sounding Reference Signal, SRS), demodulation reference signal (Demodulation Reference Signal, DMRS), phase tracking reference signal (Phase Noise Tracking Reference Signal, PTRS), Tracking Reference Signal (TRS).
  • the downlink reference signal includes one of the following: Channel State Information-Reference Signal (CSI-RS for short), Secondary Synchronization Block (SSB for short), DMRS, PTRS, TRS.
  • CSI-RS Channel State Information-Reference Signal
  • SSB Secondary Synchronization Block
  • Sending the uplink transmission carried by the N frequency domain resource sets according to M spatial resource information includes:
  • antenna port 0 is used to send uplink transmission carried by frequency domain resource set 0.
  • Antenna panel 0 is used to transmit the uplink transmission carried by frequency domain resource set 0.
  • Use beam 0 to send uplink transmission carried by frequency domain resource set 0.
  • Use transmission chain 0 to send the uplink transmission carried by frequency domain resource set 0.
  • the precoding codeword is a matrix, the rows of the matrix correspond to antenna ports, and the columns of the matrix correspond to layers. If the matrix elements of a certain row of the precoding codeword are all 0, the antenna port corresponding to this row of the precoding codeword is a zero-power antenna port. If the matrix elements of a certain row of the precoding codeword are not all 0, the antenna port corresponding to this row of the precoding codeword is a non-zero power antenna port.
  • Antenna ports 0 and 1 are zero-power antenna ports
  • antenna ports 2, 3 are non-zero-power antenna ports.
  • the base station schedules the UE to use different transmission parameters, such as different beams, or transmission filters with different parameters to send different SRSs. Assuming that a total of 3 SRSs are sent, SRI 0, SRI 1, respectively, SRI 2 logo.
  • the number M of spatial resource information is determined according to the SRS resource corresponding to the SRI field included in the scheduling information of uplink transmission or the number of antenna ports included in the SRS resource set.
  • the number of spatial resource information M 4.
  • the number of antenna ports of the PUSCH is 4.
  • the number M of spatial resource information is determined according to the SRS resource corresponding to the SRI field included in the uplink transmission scheduling information or the number of antenna ports included in the SRS resource set, and the precoding information in the uplink transmission scheduling information.
  • the precoding information in the scheduling information for uplink transmission includes one of the following indications: TPMI, the number of layers.
  • the precoding matrix for uplink transmission is determined according to the SRS resource corresponding to the SRI field or the number of antenna ports included in the SRS resource set included in the scheduling information for uplink transmission and the precoding information in the scheduling information for uplink transmission.
  • the number M of spatial resource information is determined according to the precoding matrix of uplink transmission, where M is equal to the number of rows of non-zero power in the matrix.
  • the antenna port corresponding to this row of the precoding codeword is a zero-power row. If the matrix elements of a certain row of the precoding codeword are not all 0, the antenna port corresponding to this row of the precoding codeword is a row with non-zero power.
  • the signal attenuates as the distance increases during propagation.
  • the maximum transmission power of the user equipment determines its communication range. The higher the maximum transmit power, the farther the signal can travel. Therefore, the communication system regulates the maximum transmission power of the user equipment.
  • LTE Long Term Evolution
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • the UE generally needs to support power class 3, that is, 23 dBm.
  • some UEs also support power level 2, which is 26dBm.
  • the UE can be configured with one or more antenna ports (antenna ports). Each antenna port corresponds to one or more antenna links (antenna chain) or radio frequency (RF chain), and each antenna port or antenna link corresponds to a PA (power amplifier, power amplifier). For simplicity of description, it is assumed that each antenna port corresponds to a PA. If the antenna port corresponds to multiple PAs, the power of the multiple PAs combined is the power capability of this antenna port.
  • each antenna port or some antenna ports may reach the power required by the power level, or all antenna ports may not reach the power required by the power level, but some or The combination of all antenna ports can reach the power required by the power level.
  • the maximum transmission power needs to be 23 dBm.
  • the power supported by the two antenna ports may be one of the following: 23dBm+23dBm; 23dBm+20dBm; or 20dBm+20dBm.
  • a combination of multiple antenna ports is required to reach the maximum transmission power. For example, two antenna ports of 20 dBm can transmit at the same time with a transmission power of 23 dBm.
  • MIMO Multiple-Input Multiple-Out-put
  • the base station can schedule the UE to use two antenna ports to transmit, and use different
  • the codeword makes the two antenna ports best match the actual channel.
  • the coherent capability between the antennas means that the phase difference between the antennas can be controlled.
  • the base station cannot schedule the UE to use two antenna ports to transmit, because the phase between the two antenna ports is uncontrollable, and the interference between the ports is uncontrollable. control. If two antenna ports are used to send the same data, then the signal between the antenna ports may be superimposed in the positive direction to twice the power, or it may be superimposed in the negative direction, and reduced to zero power.
  • PUSCH physical uplink shared channel
  • Codebook-based transmission means that the base station selects a codeword from a predefined codebook as precoding for uplink transmission.
  • a codebook is a predefined set of codewords, including at least one codeword.
  • Each codeword is a matrix used for precoding of multiple antenna ports at the transmitter.
  • Each row of the codeword matrix represents an antenna port (antenna port); each column represents a layer (MIMO layer).
  • MIMO layer For example, Table 1 shows a codebook with 2 antenna ports and a layer.
  • the codebook includes 6 codewords, and each codeword is two rows and one column.
  • the codeword is identified by TPMI (Transmitted Precoding Matrix Indicator).
  • the base station determines the number of antenna ports according to the UE's ability to transmit antennas, and schedules the UE to transmit SRS, which is used to measure the uplink channel, also called channel sounding.
  • the base station determines the MIMO parameters for subsequent uplink transmissions according to the channel measurement results, including the number of layers, precoding, etc., and then specifies a certain precoding matrix, namely TPMI, for the uplink transmission of the UE.
  • the UE uses the designated precoding matrix to precode the transmitted data and send it to the base station.
  • the base station may configure different SRS resources for the UE, and the UE transmits different SRS on different SRS resources, then the base station also needs to indicate SRS resource (SRI, SRS resource indication) for uplink transmission.
  • SRI SRS resource indication
  • different SRS resources correspond to different transmit beam resources (groups), different antenna panels (groups), or precoding methods corresponding to different antenna ports.
  • the base station does not need to instruct the TPMI to the UE, but if the UE uses multiple antenna ports, the UE can determine the precoding information for transmission by itself.
  • the UE When the UE is configured with multiple antenna ports, according to the ability to adjust the phase difference of the transmitted signal between the antenna ports, it is divided into different coherent capabilities: full coherent, partial coherent and non-coherent (non coherent). High-level coherent capability UE downward support. Full coherence ability is higher than partial coherence ability, and partial coherence ability is higher than non-coherent ability.
  • Non-coherent capability means that the phase difference between antenna ports cannot be accurately adjusted; partial coherent capability means that only part of the antenna ports can accurately adjust the phase difference, and full coherent capability means that the phase difference between all antenna ports The phase difference can be accurately adjusted between.
  • Non-coherent UEs can only support codewords designed for non-coherent UEs; partially coherent UEs can support codewords designed for non-coherent UEs and codewords designed for partially coherent UEs; fully coherent A capable UE can support codewords designed for UEs with non-coherent capabilities, codewords designed for UEs with partial coherence capabilities, and codewords designed for UEs with full coherence capabilities.
  • a fully coherent capable UE may also support partially coherent and non-coherent transmission.
  • Partially coherent UEs also support non-coherent transmission.
  • Table 1 for the 2-antenna port 1-layer codebook each of the TPMI 0 and 1 matrix has an antenna port of 0, that is, only one antenna port is used for transmission, also called antenna port selection, or antenna port for short Choice, or antenna choice.
  • TPMI 0 and TPMI 1 are designed for UEs with incoherent capabilities.
  • TPMI 2 to TPMI 5 are used for both antenna ports, and the phases between the antenna ports are different.
  • the codewords TPMI 2 to TPMI 5 were originally designed for UEs with full coherence capabilities. 2 Antenna ports are only divided into fully coherent and non-coherent.
  • Table 2 is a codebook for the first layer of 4 antenna ports.
  • 4 antenna ports are partially coherent. Only one non-zero element codeword among the four elements is used for non-coherent transmission, two non-zero element codewords are used for partially coherent transmission, and four non-zero element codewords are used for fully coherent transmission.
  • the codewords shown in Table 2 are used for 4 antenna ports, and the 4 antenna ports are respectively denoted as antenna ports 0 to 3.
  • the maximum power limit is equivalent to the maximum power limit for all antennas, which is called full power (or full rate) transmission.
  • non-codebook-based transmission related technologies can already support the use of maximum power, that is, full power transmission.
  • codebook-based transmission the related technology can only support full power transmission for UEs with full coherence capability, and cannot support full power transmission for UEs with partial coherence and non-coherence capabilities.
  • the UE is not allowed to use codewords that exceed its own coherence capabilities.
  • a UE that only supports non-coherent capabilities cannot use codewords with partial coherent and full coherent capabilities.
  • UEs that support partial coherent and non-coherent capabilities cannot use codewords with full coherent capabilities.
  • Table 2 UEs with non-coherent capabilities can only use TPMI 0 to 3, and UEs with some coherent capabilities (which can be backward compatible to support non-coherent capabilities) can use TPMI 0 to 11.
  • Full coherent capabilities (which can support backward Partial and non-coherent capabilities) UEs can use all codewords.
  • the maximum transmit power of each antenna port is limited to one part of the maximum number of antenna ports. For example, when a maximum of 4 antenna ports are supported, the maximum power of each antenna port is limited to 1/4 of the maximum transmit power of the UE.
  • the maximum antenna port supported is 4, for a UE with incoherent capability, only one antenna port can be selected for transmission by antenna selection, and the maximum transmission power of the antenna port is 1/4 of the maximum power allowed by the UE.
  • the actual transmit power of a port is 1/4 of the allowable power of the UE's uplink transmission.
  • the antenna port reduction method is adopted, that is, the antenna port selection.
  • antenna port group selection otherwise, a non-antenna port (group) selection method is adopted.
  • This evaluation method includes the selection of antenna port (group) selection or non-antenna port (group) selection according to the performance of the receiving end. For example, compare the reception performance of the antenna port (group) selection method and the non-antenna port (group) selection method, and choose which method has the best performance.
  • Non-antenna port (group) selection that is, allowing the UE to use codewords that exceed its own coherence capability, including the following two methods:
  • Method 1 Multiple antenna ports all send transmission, and there is random interference between antenna ports.
  • antenna port selection For the convenience of description, traditional codewords are divided into three categories: antenna port selection, antenna port group selection, and full antenna port.
  • codewords selected by antenna ports can be used; for UEs with partial coherence capabilities, codewords for antenna port selection and antenna port group selection can be used; for UEs with full coherence capabilities , You can use the above 3 types of codewords.
  • Fig. 2 is a schematic diagram of scheduling resource transmission according to an embodiment of the present application.
  • the UE supports 2 antenna ports.
  • the UE can only select antenna port selection methods with TPMI of 0 and 1 in the manner adopted by the related technology.
  • TPMI When TPMI is selected as 0, only antenna port 0 can be used for transmission, which corresponds to port (port) #0 in Figure 2; when TPMI is selected as 1, only antenna port 1 can be used for transmission, which corresponds to the port in Figure 2. #1.
  • the UE selects from the antenna port the one used to transmit the N frequency domain resource sets according to the identification information of the codewords in the first spreading codeword set Antenna port; wherein, the first spreading codeword set includes codewords higher than the coherence capability of the UE.
  • Fig. 3 is a schematic diagram of another scheduling resource transmission according to an embodiment of the present application.
  • the UE supports 2 antenna ports.
  • the UE can only select antenna port selection methods with TPMI 0 and 1 in the manner adopted by the related technology, as shown in Table 1.
  • the indication information of the precoding codeword corresponding to the coherence capability of the airspace resource higher than the airspace resource information is realized in the following manner:
  • a first set of extended codewords is required
  • the antenna ports or antenna port groups corresponding to the codewords are sent and transmitted on different frequency domain resources respectively, that is, the antenna ports used to transmit the N frequency domain resource sets are selected. That is, the two antenna ports only send transmissions on one set of frequency domain resources, instead of both antenna ports transmitting the same frequency domain resources. Therefore, the UE first divides the scheduling resources into N frequency domain resource sets according to the scheduling indication information sent by the base station and/or the allocation mode predetermined with the base station. However, according to the antenna ports or antenna port groups corresponding to the codewords of the first spreading codeword set, resource transmission is realized on the N frequency domain resource sets.
  • the UE supports 2 antenna ports with non-coherent capabilities.
  • the codeword is According to the method described in FIG. 2, because the antenna ports are incoherent, the phase between the antenna ports is uncontrollable, and there will be unpredictable interference between the antenna ports. Therefore, the resources scheduled by the base station are divided into two frequency domain resource sets in the frequency domain, and the two antenna ports respectively only send transmissions on one frequency domain resource set. In this way, there is no mutual interference between multiple ports.
  • Fig. 4 is a schematic diagram of transmission based on a set of frequency domain resources according to an embodiment of the present application.
  • the different antenna ports of Figure 4 transmit transmission in a frequency division manner with the following advantages: Compared with the method of antenna port selection in Figure 2 and the manner in which multiple antenna ports are forced to transmit in Figure 3
  • Each antenna port only needs to transmit resources of half the frequency.
  • the power is limited, that is, when the antenna port transmits with the maximum transmission power, higher power can be transmitted on each RE, so the coverage can be enhanced.
  • the 4 antenna ports are divided into two groups, and each group includes 2 antenna ports.
  • the antenna ports in the group have coherence capabilities, so they can transmit simultaneously.
  • group 0 includes antenna ports 0 and 2
  • group 1 includes antenna ports 1 and 3.
  • the UE divides the 4 RBs of the scheduled resource into 2 parts, and transmits them on antenna ports 0 and 2 of group 0 and antenna ports 1 and 3 of group 1 respectively.
  • determining the number of frequency domain resource groups is also related to the coherence capability.
  • antenna port #0 in Figure 4 transmits RB#0 and RB#1, which means that the data to be transmitted is placed in the positions of RB #0 and RB#1, and the data to be transmitted is not placed in RB#2 and RB#3. data.
  • antenna port #1 transmits RB#2 and RB#3, which means that the data to be transmitted is placed in the positions of RB#2 and RB#3, and the data to be transmitted is not placed in RB#0 and RB#1.
  • the indication information used to indicate a plurality of precoding codewords complying with the coherence capability is implemented in the following manner:
  • the TPMI in Table 1 is 6 and 7 are not used, and can be used to indicate the indication information of multiple precoding codewords with consistent coherence capabilities.
  • the codeword with TPMI of 0 is used for antenna port 0, the codeword with TPMI of 1 is used for antenna port 1, the codeword with TPMI of 2 is used for antenna port 2, and the codeword with TPMI of 3 is used for antenna port 3.
  • the UE uses the codeword with TPMI of 1
  • the determined antenna port 1 performs transmission.
  • the UE uses a codeword with a TPMI of 2
  • the determined antenna port 2 performs transmission.
  • the UE uses a codeword with a TPMI of 3.
  • the determined antenna port 3 performs transmission.
  • the preset rule described above may be determined by the UE according to the user's instruction, or may be determined according to factors such as the transmission capability of the antenna port in combination with the resource size of the frequency domain set. For example, if in the case of non-uniform division, the scheduling resource with 4 RB resources can be divided into a resource set of ⁇ #0 ⁇ and a resource set of ⁇ #1, #2, #3 ⁇ . If the transmission performance of antenna port 0 is better than that of antenna port 1, then when the UE allocates antenna ports, the UE uses the code word with TPMI 0 The determined antenna port 0 for transmission has resource sets of #1, #2, and #3. For the resource set #0, the UE uses a codeword with a TPMI of 1. The determined antenna port 1 performs transmission.
  • the 4 antenna ports are divided into two groups, and each group includes 2 antenna ports.
  • the antenna ports in the group have coherence capabilities, so they can transmit simultaneously.
  • group 0 includes antenna ports 0 and 2
  • group 1 includes antenna ports 1 and 3.
  • the base station schedules 4 RBs for a UE that supports partial coherence capabilities of 4 antenna ports to send uplink transmission at layer 1, and indicates a composite codeword.
  • the UE divides the 4 RBs of the scheduled resource into 2 parts, and transmits them on antenna ports 0 and 2 of group 0 and antenna ports 1 and 3 of group 1 respectively. That is, group 0 corresponds to the code word with TPMI 4 Group 1 corresponds to the code word with TPMI 8
  • the base station schedules or activates uplink transmission for the UE, and indicates at least one of the following: time-frequency domain resource information and precoding information for uplink transmission.
  • the foregoing information for scheduling uplink transmission may be carried in one physical layer downlink control information (Downlink Control Information, DCI), or may be carried in multiple DCIs.
  • DCI Downlink Control Information
  • the DCI corresponds to all frequency domain resource sets, including time-frequency domain resource information and precoding information of all frequency domain resource sets.
  • each DCI corresponds to a frequency domain resource set, including time-frequency domain resource information and precoding information of the frequency domain resource set.
  • the UE determines the number of frequency domain resource sets and the antenna ports corresponding to each frequency domain resource set at least according to the DCI information.
  • Sending the uplink transmission carried by the N frequency domain resource sets according to the M spatial resource information further includes: carrying the uplink transmission on each of the N frequency domain resource sets. transmission.
  • the frequency domain resource includes one of the following: a resource block RB and a resource unit RE.
  • the uplink transmission includes one of the following: PUSCH transmission, physical uplink control channel (Physical Uplink Control Channel, PUCCH) transmission, and SRS transmission.
  • the resource set includes one of the following: different RB (Resource Block, resource block) sets, and different RE (Resource Element, resource unit) sets.
  • RB and RE are defined in LTE and New Radio (NR) technologies, and each RB includes 12 REs in the frequency domain.
  • the number of resources indicated by the scheduling information is N times the product of 2, 3, and 5 to the power of a non-negative integer.
  • N is a positive integer not less than 2.
  • Dividing the frequency domain resources indicated by the scheduling information into N frequency domain resource sets includes: according to the resource sequence of the frequency domain resources indicated by the scheduling information, sequentially allocating a required number of frequency domain resources to each of the frequency domain resource sets The frequency domain resources.
  • the resource set is an RB set
  • the RB of the scheduled resource contains 4 RBs, which are sequentially numbered RB#3, RB#4, RB#5, RB#6, N is 2, and are evenly allocated to two RB sets
  • the two RB sets each include 2 RBs
  • the first RB set includes RB#3 and RB#4, and the first RB set includes RB#5 and RB#6.
  • the RB of the scheduled resource contains 4 RBs, these 4 RBs are not consecutive RBs, numbered RB#3, RB#4, RB#7, RB#8, N is 2, and evenly allocated as two RBs Set, the two RB sets each include 2 RBs, the first RB set includes RB#3 and RB#4, and the first RB set includes RB#7 and RB#8.
  • the resource set is an RE set
  • the REs in each RB are divided into 2 RE sets.
  • the RB includes 12 REs, the 6 REs with the smaller RE numbers belong to the first RE set, and the 6 REs with the larger RE numbers belong to the second RE set.
  • Some of the REs may be REs used to send DMRS.
  • Dividing the frequency domain resources indicated by the scheduling information into N frequency domain resource sets includes: according to the resource sequence of the frequency domain resources indicated by the scheduling information, the frequency domain resources allocated to each resource set are allocated in turn until allocated complete.
  • the RB of the scheduled resource contains 4 RBs, which are sequentially numbered RB#3, RB#4, RB#5, RB#6, and N is 2, evenly allocated to two RB sets, then the two RB sets each include 2 RBs, the first RB set includes RB#3 and RB#5, and the first RB set includes RB#4 and RB#6.
  • the REs in each RB are divided into 2 RE sets.
  • the RB includes 12 REs, the 6 REs with an even number of REs belong to the first RE set, and the 6 REs with an odd number belong to the second RE set.
  • Some of the REs may be REs used to send DMRS.
  • Dividing the frequency domain resources indicated by the scheduling information into N frequency domain resource sets includes: according to the maximum power of the space resource information corresponding to the frequency domain resource sets, allocating all the frequency domain resources The frequency domain resources.
  • the number of RBs included in the non-uniform N RB set is related to the maximum power supported by the antenna port or antenna port combination corresponding to the RB set. That is, the higher the maximum power supported by the antenna port or antenna port combination, the more RBs included in the RB set corresponding to the antenna port or antenna port combination. Therefore, the number of RBs included in the RB set corresponding to the antenna port or antenna port combination is proportional to the linear value of the maximum power supported by the antenna port or antenna port combination.
  • the UE supports two transmit antenna ports, the maximum transmit power of antenna port 0 is 23 dBm, and the maximum transmit power of antenna port 1 is 20 dBm, then the linear ratio of the maximum transmit power of antenna port 0 to antenna port 1 is 2:1.
  • the number of RBs of the scheduled resources is allocated to the two antenna ports in a ratio of 2:1. When the number of RBs of the scheduled resource is 15, the number of RBs transmitted by antenna port 0 and antenna port 1 are 10 and 5, respectively.
  • the base station needs to ensure that the number of RBs allocated to the UE is divided into N RB sets in proportion to the linear value of the maximum power supported by the N antenna ports or antenna port combinations, and the number of RBs contained in each RB set Is an integer.
  • Sending the uplink transmission carried by the N frequency domain resource sets according to the M spatial resource information further includes: allocating the total transmit power of the uplink transmission to the M spatial resource information; each of the spatial domains The transmission power allocated by the resource information is evenly allocated on the REs of the corresponding frequency domain resource set.
  • the base station schedules the UE to use 2 antenna ports to send PUSCH transmission, and the frequency domain resources indicated by the scheduling information are RB0 and RB1.
  • the UE divides frequency domain resources into two groups, frequency domain resource set 0 includes RB0, and frequency domain resource set 1 includes RB1, and uses antenna port 0 and antenna port 1 to transmit PUSCH transmissions carried on RB0 and RB1, respectively.
  • the UE determines the total transmission power P of the PUSCH according to the power control parameters configured by the base station and the DCI information.
  • the so-called total transmission power refers to the sum of the transmission power of all antenna ports.
  • the UE allocates the total transmission power to the two antenna ports, for example, the transmission power of each antenna port is P/2.
  • the power of P/2 is equally distributed among all REs of RB0.
  • the power of P/2 is equally distributed among all REs of RB1.
  • Allocating the total transmit power of the uplink transmission to the M pieces of airspace resource information includes: equally allocating the total transmit power of the uplink transmission to the M pieces of airspace resource information; or, transmitting the uplink
  • the total transmit power of is allocated to the M pieces of airspace resource information according to the ratio between the number of frequency domain resources corresponding to the M pieces of airspace resource information. For example, the frequency domain resource corresponding to antenna port 0 is allocated 4 RBs, and the frequency domain resource corresponding to antenna port 1 is allocated 2 RBs.
  • the transmit power ratio of antenna port 0 and antenna port 1 is 2:1, that is, 2/3P and 1/3P, respectively.
  • the antenna port with the high maximum transmission power that can support transmission is more likely to exert its high transmission power capability.
  • the PA capability of each antenna port can be maximized while ensuring that the power spectral density of each RE is uniform
  • the method according to the foregoing embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware.
  • the technical solutions of the embodiments of the present application can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), and includes several instructions to make a
  • a terminal device which may be a mobile phone, a computer, a server, or a network device, etc.) executes the method described in each embodiment of the embodiments of the present application.
  • FIG. 5 is a flowchart of an uplink transmission scheduling method according to an embodiment of the present application. As shown in FIG. 5, the process includes the following steps:
  • Step S502 The second communication node sends scheduling information for uplink transmission to the first communication node, where the scheduling information for uplink transmission is used to instruct the first communication node to divide frequency domain resources into N frequency domain resource sets.
  • N is a positive integer greater than 1.
  • Step S504 The second communication node receives the uplink transmission sent by the first communication node.
  • the scheduling information is used to instruct the first communication node to divide the frequency domain resources into N frequency domain resource sets on average.
  • the number of resources indicated by the scheduling information is N times the product of 2, 3, and 5 to the power of a non-negative integer.
  • the frequency domain resource includes one of the following: a resource block RB and a resource unit RE.
  • the scheduling information is used to instruct the first communication node to sequentially allocate a required number of the frequency domain resources to each of the frequency domain resource sets according to the resource sequence of the frequency domain resources.
  • the scheduling information is used to instruct the first communication node to allocate frequency domain resources for each resource set in turn according to the resource sequence of the frequency domain resources until the allocation is completed.
  • the scheduling information is further used to instruct the first communication node to allocate the frequency domain resource to each frequency domain resource set according to the maximum power of the spatial resource information corresponding to the frequency domain resource set.
  • the first communication node includes at least: user equipment UE, and the second communication node includes at least: network side equipment.
  • a resource transmission device is also provided, and the device is used to implement the above-mentioned embodiments and optional implementation manners, and those that have been described will not be repeated.
  • the term "module” can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are optionally implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • Fig. 6 is a structural block diagram of a device for sending uplink transmission according to an embodiment of the present application.
  • the device includes: a dividing module 62, configured to divide the frequency domain resources indicated by the scheduling information into N Frequency domain resource set; the transmission module 64 is configured to send the uplink transmission carried by the N frequency domain resource sets according to M spatial resource information.
  • M and N are positive integers greater than 1.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules are combined in any combination The forms are located in different processors.
  • a resource scheduling device is also provided, and the device is used to implement the above-mentioned embodiments and optional implementation manners, and those that have been described will not be repeated.
  • the term "module” can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments can be implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • Fig. 7 is a structural block diagram of a device for scheduling uplink transmission according to an embodiment of the present application.
  • the device includes: a sending module 72 for sending uplink transmission scheduling information to a first communication node, where: The scheduling information of the uplink transmission is used to instruct the first communication node to divide frequency domain resources into N frequency domain resource sets, where N is a positive integer greater than 1; the receiving module 74 is configured to receive the first The uplink transmission sent by the communication node.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules are combined in any combination The forms are located in different processors.
  • the embodiments of the embodiments of the present application also provide a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • the foregoing storage medium may be configured to store a computer program for executing the following steps:
  • S1 Obtain scheduling information for uplink transmission.
  • M and N are positive integers greater than 1.
  • the second communication node sends scheduling information for uplink transmission to the first communication node, where the scheduling information for uplink transmission is used to instruct the first communication node to divide frequency domain resources into N frequency domain resource sets, where , N is a positive integer greater than 1.
  • the second communication node receives the uplink transmission sent by the first communication node.
  • the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (RAM for short), mobile hard disk, magnetic disk Various media that can store computer programs such as discs or optical discs.
  • the embodiments of the embodiments of the present application also provide an electronic device, including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute the steps in any of the above method embodiments .
  • the above-mentioned electronic device may also include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • the foregoing processor may be configured to execute the following steps through a computer program:
  • S1 Obtain scheduling information for uplink transmission.
  • M and N are positive integers greater than 1. or,
  • the second communication node sends scheduling information for uplink transmission to the first communication node, where the scheduling information for uplink transmission is used to instruct the first communication node to divide frequency domain resources into N frequency domain resource sets, where , N is a positive integer greater than 1.
  • the second communication node receives the uplink transmission sent by the first communication node.
  • modules or steps of the above-mentioned embodiments of the application can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed among multiple computing devices.
  • they can be implemented by the program code executable by the computing device, so that they can be stored in the storage device and executed by the computing device, and in some cases, they can be executed in a different order than here.
  • the steps shown or described can be implemented by making them into individual integrated circuit modules, or making multiple modules or steps of them into a single integrated circuit module. In this way, the embodiments of the present application are not limited to any specific hardware and software combination.

Abstract

La présente invention porte, selon des modes de réalisation, sur un procédé et sur un dispositif d'envoyer une transmission de liaison montante, sur un procédé et sur un appareil permettant de planifier une transmission de liaison montante, sur un dispositif électronique et sur un support d'informations. De façon précise, le procédé permettant d'envoyer une transmission de liaison montante consiste : à obtenir des informations de planification d'une transmission de liaison montante ; à classer des ressources de domaine de fréquence indiquées par les informations de planification dans N ensembles de ressources de domaine de fréquence ; et à envoyer, selon M éléments d'informations de ressources de domaine spatial, la transmission de liaison montante portée par les N ensembles de ressources de domaine de fréquence, M et N étant des nombres entiers positifs supérieurs à 1.
PCT/CN2020/082029 2019-03-28 2020-03-30 Procédé et dispositif permettant d'envoyer une transmission de liaison montante, procédé et appareil permettant de planifier une transmission de liaison montante, dispositif électronique et support d'informations WO2020192785A1 (fr)

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CN201910244405.2A CN111757474A (zh) 2019-03-28 2019-03-28 上行传输的发送，调度方法及装置
CN201910244405.2 2019-03-28

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