WO2018028614A1 - 数据收发方法及装置 - Google Patents

数据收发方法及装置 Download PDF

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Publication number
WO2018028614A1
WO2018028614A1 PCT/CN2017/096707 CN2017096707W WO2018028614A1 WO 2018028614 A1 WO2018028614 A1 WO 2018028614A1 CN 2017096707 W CN2017096707 W CN 2017096707W WO 2018028614 A1 WO2018028614 A1 WO 2018028614A1
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WO
WIPO (PCT)
Prior art keywords
subcarrier
subcarriers
mapping rule
reference signal
physical resource
Prior art date
Application number
PCT/CN2017/096707
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English (en)
French (fr)
Inventor
薛丽霞
成艳
孙昊
陈铮
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710184193.4A external-priority patent/CN107733623B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020197003630A priority Critical patent/KR20190025717A/ko
Priority to BR112019001747-0A priority patent/BR112019001747A2/pt
Priority to EP17838744.5A priority patent/EP3477884B1/en
Publication of WO2018028614A1 publication Critical patent/WO2018028614A1/zh
Priority to US16/273,660 priority patent/US10855509B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of network transmission, and in particular, to a data transmission and reception method and apparatus.
  • a DC subcarrier also called a DC (Direct Carrier) subcarrier
  • DC Direct Carrier
  • the LTE specifies that the DC subcarrier does not map data, and does not participate in the resource index of the physical resource block (PRB) of the system, where the physical resource block is data transmission.
  • PRB physical resource block
  • a basic scheduling unit that contains 12 subcarriers in the frequency domain.
  • the bandwidth capability of the user equipment (UE) is the same as that of the base station (eNodeB). Therefore, for the user equipment and the base station, their DC subcarriers are the same and can be uniformly processed.
  • the bandwidth capability of the user equipment may be less than the bandwidth capability of the base station.
  • the resources allocated by the base station for these user equipments may be different, and the locations of the DC subcarriers of these user equipments are also different. If the design mode of LTE is used, then an idle subcarrier needs to be reserved at the position of each DC subcarrier (that is, one subcarrier is added and not used for transmission), and the actual access situation of the user equipment is different, and the reservation is reserved. The location and number of idle subcarriers are uncertain. This situation will cause the overall bandwidth of the system to change dynamically with the access conditions of the user equipment.
  • the resource index of the base station for the PRB will also change dynamically, which will greatly increase the complexity of the system design.
  • the bandwidth capability of the user equipment is smaller than the bandwidth capability of the base station.
  • the base station does not add additional DC subcarriers to the user equipment, but utilizes the characteristics of the narrowband receiver of the user equipment, and avoids interference of the DC subcarriers on the data & reference signal reception through different implementation behaviors at the receiving end.
  • Both the NB-IoT and the MTC user equipment belong to the narrowband receiving user equipment, which can avoid the interference problem of the DC subcarriers by the implementation behavior of the user equipment, but the bandwidth capability of the future user equipment may be stronger than that of the NB-
  • the user equipment of IoT and MTC cannot avoid the interference of DC subcarriers through pure implementation behavior.
  • the embodiment of the present application provides a data transmission and reception method and device.
  • the technical solutions are as follows:
  • the first aspect provides a data transceiving method, which is applied to a receiving end, and when receiving a data transceiving method, the receiving end first receives a first reference signal transmitted on a subcarrier of a target physical resource block, and then, according to the first mapping rule, Corresponding processing is performed on the first reference signal received from the subcarriers of the target physical resource block.
  • the target physical resource block here includes a subcarrier carrying a first reference signal, and the overall system bandwidth is composed of multiple subcarriers, each physical resource block includes 12 subcarriers, and the target physical resource block refers to all physical resource blocks. Included, a physical resource block carrying a subcarrier of the first reference signal.
  • the first mapping rule herein defines at least mapping the first reference signal to 10 designated subcarriers of the physical resource block, none of the 10 designated subcarriers are located in the candidate set of the DC subcarrier, and the candidate set of the DC subcarriers
  • a carrier number as a DC subcarrier in the physical resource block is defined, and the first reference signal includes a phase noise compensation reference signal (PCRS).
  • the phase noise reference signal is transmitted simultaneously with the transmission of the information, and is associated with the OFDM symbol and the physical resource block occupied by the transmitted information, and is used for phase noise compensation of the transmitted information.
  • the first mapping rule defines that the first reference signal is mapped to the subcarrier of the non-DC subcarrier in the physical resource block, the loss of the first reference signal can be avoided, and the first reference signal can be correctly demodulated by the receiving end.
  • the DC subcarrier is not additionally set, a certain subcarrier in the physical resource block is used as an idle subcarrier, that is, as a DC subcarrier, thereby avoiding dynamic changes in the number of downlink subcarriers of the system.
  • the first reference signal may be a PCRS
  • the number of physical resource blocks used by different user equipments may be an odd number or an even number, which may result in different subcarrier numbers corresponding to DC subcarriers of different user equipments.
  • a candidate sub-carrier of the DC sub-carrier defines a DC sub-carrier that is odd for the physical resource block and a DC sub-carrier that is even for the physical resource block, so that when the first reference signal is sent to each user equipment, The two subcarrier numbers defined in the candidate set of the DC subcarriers, each user equipment can correctly demodulate the first reference signal according to the information on the subcarriers of the target physical resource block.
  • the receiving end may obtain the first mapping rule by using the following two manners.
  • the first manner the receiving end may determine the first mapping rule based on the candidate set of the DC subcarriers, where The mapping rule can be predefined. In this case, the receiving end can obtain the predefined first mapping rule regardless of whether the receiving end is a user equipment or a base station.
  • the second mode is: when the receiving end is the user equipment, the receiving end may further receive a first mapping rule that is notified by the base station by using a semi-static configuration or a dynamic configuration manner, where the first mapping rule is a candidate set of the base station based on the DC subcarrier. definite.
  • the base station may be given the right to obtain the predefined first mapping rule, and the user equipment does not have the right to obtain the predefined first mapping rule. At this time, the base station may notify the scheduled user equipment according to the scheduling.
  • a mapping rule that allows the base station to better schedule and manage.
  • the candidate set of DC subcarriers includes subcarriers 0 and 5 subcarriers; or the candidate set includes 0 Subcarrier and subcarrier No. 6; or, the candidate set includes subcarrier No. 11 and subcarrier No. 5; or, the candidate set includes subcarrier No. 11 and subcarrier No. 6.
  • a candidate set of one DC subcarrier can be used as a standard in the system, and both the base station and the user equipment in the system send and receive data in a candidate set of standard DC subcarriers.
  • the first mapping rule defines that the first reference signal is mapped to the first subcarrier, the second subcarrier, the third subcarrier, the fourth subcarrier, the sixth subcarrier, and the seventh subcarrier of the 12 subcarriers of the physical resource block.
  • the first mapping rule defines that the first reference signal is mapped to the subcarrier No. 0, the subcarrier No. 1 and the second subcarrier of the 12 subcarriers of the physical resource block.
  • the first mapping rule defines that the first reference signal is mapped to the subcarrier No. 0, the subcarrier No. 1, the subcarrier No. 2, the subcarrier No. 3, and the subcarrier No. 4 among the 12 subcarriers of the physical resource block. , No. 5 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier.
  • the first mapping rule specifies that the first reference signal is mapped to a subcarrier that is not used as a DC subcarrier in the physical resource block, such that the DC subcarrier of the user equipment is a candidate of the DC subcarrier.
  • the carrier device can map the first reference signal to the remaining 10 subcarriers of the non-DC subcarrier in the target physical resource block, and the user equipment can correctly solve the information according to the information in the 10 subcarriers of the non-DC subcarrier in the target physical resource block.
  • the first reference signal is called up.
  • the method further Including a process of receiving data and De Modulation Reference Signal (DMRS), the receiving end first receives data and a second reference signal from subcarriers of the scheduled physical resource block, and then according to the second mapping rule and the DC subcarrier.
  • the candidate set is configured to perform corresponding processing on the data received from the subcarriers of the scheduled physical resource block and the second reference signal.
  • the physical resource block scheduled here includes a subcarrier carrying data and a second reference signal
  • the second mapping rule defines at least a manner of mapping data and a second reference signal on the DC subcarrier
  • the second reference signal includes a DMRS.
  • the second mapping rule defines the mapping rule of the data and the second reference signal, it can be ensured that the receiving end can correctly demodulate the data and the second reference signal.
  • the DC subcarrier is not additionally set, the physical resource is used. A certain subcarrier in the block is used as an idle subcarrier, that is, as a DC subcarrier, thereby avoiding dynamic changes in the number of downlink subcarriers of the system.
  • the receiving end needs to obtain the second mapping rule, and may include the following three manners when the second mapping rule is obtained.
  • the receiving end may determine the second mapping rule based on the candidate set of the DC subcarriers, and the second mapping The rule may be predefined. In this case, the receiving end may obtain a predefined second mapping rule regardless of whether the receiving end is a user equipment or a base station.
  • the second mode when the receiving end is the user equipment, the receiving end may also receive the second mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the second mapping rule is that the base station is scheduling the user equipment to receive the downlink. Data, and when the scheduled physical resource block includes the DC subcarrier of the user equipment, the DC subcarrier based candidate set is determined and sent to the user equipment; and the third mode: when the receiving end is the user equipment, the receiving end The third mapping rule and the fourth mapping rule that are notified by the base station in a semi-static configuration or a dynamic configuration manner may be received, and the second mapping rule is determined according to the third mapping rule and the fourth mapping rule, where the third mapping rule is determined.
  • a manner of mapping data on a DC subcarrier is defined, or the fourth mapping rule defines a manner in which a second reference signal is mapped on a DC subcarrier.
  • the base station may be given the right to obtain the predefined second mapping rule, and the user equipment does not have the right to obtain the predefined second mapping rule. At this time, the base station may notify the scheduled number of user equipment according to the scheduling. According to the mapping rule with the second reference signal, the base station can be better scheduled and managed.
  • the receiving end performs corresponding processing on the data received from the subcarriers of the scheduled physical resource block and the second reference signal according to the second mapping rule and the candidate set of the DC subcarriers, including: when the second mapping rule When the data is normally mapped on the DC subcarrier, the receiving end determines the DC subcarrier in the physical resource block according to the candidate set of the DC subcarrier, and discards the data on the DC subcarrier in the physical resource block;
  • the mapping rule indicates that when the physical resource block in which the DC subcarrier is located is mapped according to the 11 subcarrier data, the receiving end determines the DC subcarrier in the physical resource block according to the candidate set of the DC subcarrier, and the physical resource block is in accordance with 11 sub-carriers.
  • the carrier performs rate matching and demodulates data, and none of the 11 subcarriers is a
  • the second mapping rule indicates that the data is normally mapped on the DC subcarrier, it indicates that the data is mapped on the subcarriers in the scheduled physical resource block, because the data of the DC subcarriers on the physical resource block may cause interference, in order to ensure The accuracy of the data, at this time, the receiving end can punct the data on the DC subcarriers on the physical resource block, and discard the data on the DC subcarriers in the physical resource block.
  • the second mapping rule indicates that the physical resource block in which the DC subcarrier is located is mapped according to the 11 subcarrier data, it indicates that the DC subcarrier in the scheduled physical resource block is not mapped, and may be only in the physical resource block.
  • the data on the non-DC subcarriers can be processed, thereby ensuring the accuracy of the demodulated data.
  • the receiving end is a base station
  • the sending end is a user equipment
  • the method may further include: receiving, by the receiving end, indication information sent by the sending end, where the indication information is used to indicate whether the transmitting end has correct demodulation modulation The ability to data on DC DC subcarriers;
  • the receiving end sends data to the sending end according to the indication information. If the indication information indicates that the transmitting end does not have the capability, the subcarrier carrying the data does not include the DC subcarrier.
  • the user equipment reports to the base station whether it has the ability to correctly demodulate the data modulated on the DC subcarrier, and then the base station determines whether the data can be modulated on the DC subcarrier according to the capabilities of the user equipment. This enables the user equipment that has limited interference capability to receive the DC subcarriers to correctly demodulate the data, thereby avoiding the interference of the DC subcarriers on the user equipment with limited capabilities.
  • the receiving end receiving the indication information sent by the sending end includes:
  • the receiving end receives the random access preamble sequence or the random access third information sent by the sending end, and the random access preamble sequence or the random access third information includes the indication information.
  • the transmitting end sends the indication information to the receiving end in the process of the random access system, so that after the transmitting end accesses the system, the receiving end can directly send data to the sending end according to the indication information, so that the user equipment with limited capability can be correctly solved. Tune the data.
  • the method may further include:
  • the receiving end receives the indication information sent by the transmitting end, indicating The information is used to indicate that the receiving end offsets the uplink subcarrier of the predefined new air interface NR system by an odd multiple of the half subcarrier spacing in the frequency direction, which is the uplink subcarrier of the Long Term Evolution (LTE) system relative to the center.
  • LTE Long Term Evolution
  • the base station instructs the user equipment to offset the uplink subcarrier of the predefined NR system by an odd multiple of the half subcarrier spacing in the specified direction, where the specified direction is the offset of the uplink subcarrier of the LTE system relative to the center frequency. Move direction. This can avoid mutual interference when the NR system and the LTE system coexist.
  • the receiving end receiving the indication information sent by the sending end includes:
  • the receiving end receives the system message, the high layer signaling, or the downlink control information sent by the sending end, and the system message, the high layer signaling, or the downlink control information includes the indication information.
  • the second aspect provides a data transceiving method, which is applied to a transmitting end, and when the transmitting end implements the data transceiving method, the transmitting end first maps the first reference signal to the target physical resource block according to the first mapping rule, and then uses the same.
  • the target physical resource block mapped with the first reference signal transmits the first reference signal.
  • the target physical resource block mentioned herein includes a subcarrier carrying a first reference signal, and the overall system bandwidth is composed of multiple subcarriers, each physical resource block includes 12 subcarriers, and the target physical resource block refers to all physical resources. In the block, a physical resource block carrying a subcarrier of the first reference signal is included.
  • the first mapping rule herein defines at least mapping the first reference signal to 10 designated subcarriers of the physical resource block, where none of the 10 designated subcarriers are located in the candidate set of the DC subcarrier, candidate for the DC subcarrier
  • the set defines a carrier number as a DC subcarrier in the physical resource block, the first reference signal including a PCRS.
  • the receiving end maps the first reference signal to the non-DC in the target physical resource block according to the first mapping rule.
  • the subcarrier is on, the loss of the first reference signal can be avoided, and the first reference signal can be correctly demodulated by the receiving end.
  • the DC subcarrier is not additionally set, a certain subcarrier in the target physical resource block is used. As an idle subcarrier, it acts as a DC subcarrier, thereby avoiding dynamic changes in the number of downlink subcarriers of the system.
  • the first reference signal may be a PCRS
  • the number of physical resource blocks used by different user equipments may be an odd number or an even number, which may result in different subcarrier numbers corresponding to DC subcarriers of different user equipments.
  • a candidate sub-carrier of the DC sub-carrier defines a DC sub-carrier that is odd for the physical resource block and a DC sub-carrier that is even for the physical resource block, so that when the first reference signal is sent to each user equipment, The two subcarrier numbers defined in the candidate set of the DC subcarriers, each user equipment can correctly demodulate the first reference signal according to the information on the subcarriers of the target physical resource block.
  • the transmitting end needs to obtain the first mapping rule, and the first mapping rule may include the following two manners.
  • the first mode the transmitting end may be a candidate based on the DC subcarrier.
  • the set determines the first mapping rule, and the first mapping rule may be predefined. In this case, whether the sending end is a user equipment or a base station, the sending end may obtain a predefined first mapping rule.
  • the sending end may receive the first mapping rule that is notified by the base station by using a semi-static configuration or a dynamic configuration manner, where the first mapping rule is that the base station is based on the DC sub- A candidate set of carriers is determined.
  • the second mode is: when the sending end is the user equipment, the sending end may further receive a first mapping rule that is notified by the base station by using a semi-static configuration or a dynamic configuration manner, where the first mapping rule is a candidate set of the base station based on the DC sub-carrier. definite.
  • the base station may be given the right to obtain the predefined first mapping rule, and the user equipment does not have the right to obtain the predefined first mapping rule. At this time, the base station may notify the scheduled user equipment according to the scheduling.
  • a mapping rule that allows the base station to better schedule and manage.
  • the candidate set Including the subcarrier No. 0 and subcarrier No. 5; or, the candidate set includes subcarrier No. 0 and subcarrier No. 6; or, the candidate set includes subcarrier No. 11 and subcarrier No. 5; or, the candidate set includes Subcarrier No. 11 and subcarrier No. 6.
  • a candidate set of one DC subcarrier can be used as a standard in the system, and both the base station and the user equipment in the system send and receive data in a candidate set of standard DC subcarriers.
  • the candidate set includes subcarrier No. 0 and subcarrier No. 5
  • the first mapping rule defines that the first reference signal is mapped to the first subcarrier, the second subcarrier, the third subcarrier, the fourth subcarrier, the sixth subcarrier, and the 7 subcarriers of the 12 subcarriers of the physical resource block. Number subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier, No. 11 subcarrier; when the candidate set includes No. 0 subcarrier and No. 6 subcarrier, the first mapping rule defines the first The reference signal is mapped to subcarrier 0, subcarrier No.
  • the first mapping rule defines that the first reference signal is mapped to the 0th subcarrier, the 1st subcarrier, the 2nd subcarrier, the 3rd subcarrier, the 4th subcarrier, the 5th subcarrier among the 12 subcarriers of the physical resource block.
  • the first mapping rule specifies that the first reference signal is mapped to a subcarrier that is not used as a DC subcarrier in the physical resource block, such that the DC subcarrier of the user equipment is a candidate of the DC subcarrier.
  • the carrier device can map the first reference signal to the remaining 10 subcarriers of the non-DC subcarrier in the target physical resource block, and the user equipment can correctly solve the information according to the information in the 10 subcarriers of the non-DC subcarrier in the target physical resource block.
  • the first reference signal is called up.
  • the method further Including a process of data and DMRS transmission, the transmitting end maps the data to be transmitted and the second reference signal on subcarriers of the scheduled physical resource block according to the second mapping rule and the candidate set of DC subcarriers, and uses the mapped data and The subcarrier of the physical resource block of the second reference signal transmits the mapped data and the second reference signal.
  • the second mapping rule referred to herein defines at least a manner of mapping data and a second reference signal on a DC subcarrier, the second reference signal including a demodulation reference signal DMRS.
  • the transmitting end can ensure that the receiving end can correctly demodulate the data and the second reference signal when mapping the data and the second reference signal according to the second mapping rule.
  • the DC subcarrier is not additionally set, a certain subcarrier in the physical resource block is used as an idle subcarrier, that is, as a DC subcarrier, thereby avoiding dynamic changes in the number of downlink subcarriers of the system.
  • the sending end needs to obtain the second mapping rule.
  • the method may include the following three manners.
  • the first mode the transmitting end determines the second mapping rule based on the candidate set of DC subcarriers, and the second mapping
  • the rule may be predefined. In this case, the sender may obtain a predefined second mapping rule regardless of whether the sending end is a user equipment or a base station.
  • the second mode is: when the sending end is the user equipment, the sending end receives the second mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the second mapping rule is that the base station is scheduling the user equipment to send uplink data. , And when the scheduled physical resource block includes the DC subcarrier of the user equipment, the candidate set based on the DC subcarrier is determined and sent to the user equipment; and the third mode: when the sending end is the user equipment, the sending end receives the base station.
  • the manner in which the data is mapped on the subcarriers, or the fifth mapping rule defines the manner in which the second reference signal is mapped on the DC subcarriers.
  • the base station may be given the right to obtain the predefined second mapping rule, and the user equipment does not have the right to obtain the predefined second mapping rule. At this time, the base station may notify the scheduled user equipment data according to the scheduling. And mapping rules of the second reference signal, so that the base station can be better scheduled and managed.
  • the transmitting end maps the data to be transmitted and the second reference signal to the subcarriers of the scheduled physical resource block according to the second mapping rule and the candidate set of the DC subcarriers, including: when the second mapping rule is indicated in the DC When the data is normally mapped on the subcarrier, the transmitting end maps the data to be transmitted and the second reference signal on each subcarrier of the scheduled physical resource block; when the second mapping rule indicates the physical location on the DC subcarrier When the resource block is mapped according to the 11 subcarrier data, the transmitting end matches the data to be transmitted and the second reference signal with 11 subcarriers, and maps the rate matched information to 11 subcarriers of the scheduled physical resource block for transmission.
  • the 11 subcarriers are not DC subcarriers.
  • the transmitting end maps the data and the second reference signal to the scheduled physical resource block according to the second mapping rule, the scheduled The data is not mapped on the DC subcarriers in the physical resource block.
  • the receiving end can process only the data on the non-DC subcarriers in the physical resource block, thereby ensuring the accuracy of the demodulated data.
  • the sending end is a user equipment
  • the receiving end is a base station
  • the method may further include:
  • the sending end sends the indication information to the receiving end, where the indication information is used to indicate whether the transmitting end has the capability of correctly demodulating the data modulated on the DC DC subcarrier;
  • the transmitting end receives the data sent by the receiving end according to the indication information. If the transmitting end does not have the capability, the subcarrier carrying the data does not include the DC subcarrier.
  • the user equipment reports to the base station whether it has the ability to correctly demodulate the data modulated on the DC subcarrier, and then the base station determines whether the data can be modulated on the DC subcarrier according to the capabilities of the user equipment. This enables the user equipment that has limited interference capability to receive the DC subcarriers to correctly demodulate the data, thereby avoiding the interference of the DC subcarriers on the user equipment with limited capabilities.
  • sending, by the sending end, the indication information to the receiving end includes:
  • the sending end sends the random access preamble sequence or the random access third information to the receiving end, and the random access preamble sequence or the random access third information includes the indication information.
  • the method may further include:
  • the sub-carrier spacing of the NR system and the LTE system are the same, and the NR system is adjacent to or partially overlaps the frequency band in which the LTE system is located, the transmitting end sends the indication information to the receiving end, and the indication information And indicating that the receiving end offsets the uplink subcarrier of the predefined new air interface NR system by an odd multiple of the subcarrier spacing in the frequency direction in the specified direction, and specifies the direction as the uplink subcarrier of the Long Term Evolution (LTE) system relative to the center frequency. The direction of the offset.
  • LTE Long Term Evolution
  • the base station instructs the user equipment to offset the uplink subcarrier of the predefined NR system by an odd multiple of the half subcarrier spacing in the specified direction, where the specified direction is the offset of the uplink subcarrier of the LTE system relative to the center frequency. Move direction. This can avoid mutual interference when the NR system and the LTE system coexist.
  • sending, by the sending end, the indication information to the receiving end includes:
  • the sending end sends the system message, the high layer signaling or the downlink control information to the receiving end, and the system message, the high layer signaling or the downlink control information includes the indication information.
  • a data transceiver device in a third aspect, includes at least one unit, and each unit of the transceiver device of the information is used to implement a corresponding step in the data transceiving method of the first aspect.
  • a data transceiver device includes at least one unit, and each unit of the transceiver device of the information is used to implement a corresponding step in the data transceiving method of the second aspect.
  • a receiving device includes: a processor, a memory connected to the processor, and a receiver, where the processor and the receiver are respectively configured to implement a correspondence in the data transceiving method of the first aspect step.
  • a transmitting device includes: a processor, a memory connected to the processor, and a transmitter, where the processor and the transmitter are respectively configured to implement a correspondence in the data transceiving method of the second aspect. step.
  • a computer readable medium storing instructions for implementing the data transceiving method provided by the first aspect is provided.
  • a computer readable medium storing instructions for implementing the data transceiving method provided by the second aspect is provided.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.
  • 1 is a schematic diagram of a bandwidth of a user equipment provided in some embodiments of the present application, which is smaller than a bandwidth of a base station;
  • FIG. 2 is a schematic diagram of a bandwidth of a user equipment provided in another embodiment of the present application, which is smaller than a bandwidth of a base station;
  • FIG. 3 is a schematic diagram of determining a candidate set of DC subcarriers provided in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of determining a candidate set of DC subcarriers provided in another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a user equipment provided in an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a base station provided in an embodiment of the present application.
  • FIG. 7 is a flowchart of a data transceiving method provided in an embodiment of the present application.
  • FIG. 8 is a flowchart of a data transceiving method provided in another embodiment of the present application.
  • FIG. 9 is a flowchart of a data transceiving method provided in another embodiment of the present application.
  • FIG. 11 is a flowchart of a data transceiving method provided in another embodiment of the present application.
  • Figure 12 is a block diagram of a transmitting device provided in an embodiment of the present application.
  • Figure 13 is a block diagram of a receiving device provided in one embodiment of the present application.
  • the bandwidth of the user equipment may be smaller than the bandwidth of the base station. If the center frequency of the bandwidth is still used as the DC subcarrier, the bandwidth of different user equipments may be different, and the number of user equipments accessing the base station is different. Also, these factors cause the position or number of DC subcarriers to be unfixed. For example, in FIG. 1, there are three user equipments, one DC subcarrier is set at the center frequency of the bandwidth of each user equipment, three user equipments have three DC subcarriers in total, and four user equipments exist in FIG. The four user equipments have a total of four DC subcarriers. Obviously, according to the traditional DC subcarrier setting mode, the number of user equipments and the occupied bandwidth may cause the number and location of DC subcarriers to be different.
  • the embodiment of the present application proposes a new DC subcarrier design rule in the LTE system.
  • This design rule no longer introduces a blank subcarrier as the DC of the system.
  • Subcarriers and within the existing effective bandwidth of the system, select a candidate set of DC subcarriers, that is, designate a certain subcarrier in the scheduled PBR as a DC subcarrier, thereby avoiding introducing redundant blank subcarriers as DC subcarriers. This causes the system bandwidth to change dynamically.
  • the center frequency point is at the boundary position of the two PRBs, that is, the center frequency point is located at the 0th sub-number.
  • the user equipment can implement the actual center frequency point on one of the 0th subcarrier or the 11th subcarrier, as shown in FIG. 3.
  • the center frequency point falls at the center of the central PRB, that is, the center frequency point is located between the subcarriers 5 and 6 subcarriers, and the user equipment can implement The mode is such that the actual center frequency falls on one of the subcarriers 5 or 6 subcarriers, as shown in FIG.
  • the candidate set of DC subcarriers is one of four candidate sets of DC subcarriers, and the candidate set includes the 0th subcarrier and the 5th subcarrier, or includes The 0th subcarrier and the 6th subcarrier, or include the 11th subcarrier and the 5th subcarrier, or include the 11th subcarrier and the 6th subcarrier.
  • one candidate set can be determined, and the user equipment and the base station can be known in a predefined manner or in other manners, and subsequent data transmission or receiving processes are performed. , are all implemented based on the determined candidate set.
  • the structure of the user equipment can be seen in FIG. 5.
  • the user equipment includes a processor 31, a transceiver 32, and a memory 33.
  • the processor 31 includes one or more processing cores, and the processor 31 executes various functional applications and data processing by running a software program.
  • Transceiver 32 can be used to communicate with other devices, such as with a base station.
  • the memory 33 is coupled to the processor 31.
  • the memory 33 can be coupled to the processor 31 via a bus; the memory 33 can be used to store software programs.
  • the memory 33 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (electrically erasable read only memory (electrically erasable read only memory) Programmable read-only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (read only memory image, ROM), magnetic memory, Flash memory, disk or CD.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable programmable read only memory
  • PROM programmable read only memory
  • FIG. 5 does not constitute a limitation on the user equipment, and may include more or less components than those illustrated, or combine some components, or different components. Arrangement.
  • the structure of the base station can be seen in FIG. 6.
  • the base station includes a processor 41, a transceiver 42, and a memory 43.
  • the processor 41 includes one or more processing cores, and the processor 41 executes various functional applications and data processing by running a software program.
  • the transceiver 42 can be used to communicate with other devices, such as with a user device.
  • the memory 43 is coupled to the processor 41.
  • the memory 43 can be coupled to the processor 41 via a bus; the memory 43 can be used to store software programs.
  • the memory 43 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory, electrically erasable programmable read only memory, erasable programmable read only memory, Program read-only memory, read-only memory, magnetic memory, flash memory, disk or optical disk.
  • the structure of the base station shown in FIG. 6 does not constitute a limitation to the base station, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the receiving end in FIG. 7 may be a user equipment that receives downlink data, or a base station that receives uplink data, and when the receiving end is a user.
  • the corresponding sender is the base station.
  • the receiver is the base station
  • the corresponding sender is the user equipment.
  • the structure of the user equipment can be seen in Figure 5.
  • the structure of the base station can be seen in Figure 6.
  • the data transceiving method comprises the following steps:
  • the transmitting end maps the first reference signal to the target physical resource block according to the first mapping rule.
  • the target physical resource block includes a subcarrier carrying the first reference signal.
  • the overall system bandwidth is composed of multiple subcarriers, each physical resource block includes 12 subcarriers, and the target physical resource block refers to physical resources including all subcarriers carrying the first reference signal in all physical resource blocks. Piece.
  • the first mapping rule at least defines mapping the first reference signal to 10 designated subcarriers of the physical resource block, where the 10 designated subcarriers are not located in the candidate set of the DC subcarrier, where the first reference signal is A PCRS or the like can be included.
  • the first mapping rule described here is a limitation on the mapping manner of PCRS of each user equipment in the system.
  • the sending end needs to obtain the first mapping rule before using the first mapping rule, and the sending end can include at least the following two methods when acquiring the first mapping rule:
  • the transmitting end determines the first mapping rule based on the candidate set of DC subcarriers.
  • the base station may determine a first mapping rule based on the candidate set of DC subcarriers, which may be performed by the processor 41 in FIG.
  • the transmitting end is the user equipment
  • the user equipment may determine the first mapping rule based on the candidate set of DC subcarriers according to a predefined manner, which may be performed by the processor 31 in FIG.
  • the base station or the user equipment may be made aware of the candidate set of DC subcarriers by a predefined manner.
  • the base station or the user equipment may determine the first mapping rule based on the candidate set of DC subcarriers.
  • the first mapping rule determined based on the candidate set of the DC subcarrier defines that the first reference signal is mapped in the physical resource block.
  • the first mapping rule defines the subcarrier that maps the first reference signal to the non-zero subcarrier and not the subcarrier No. 5 on.
  • the first reference signal may be mapped to the subcarrier corresponding to the plurality of subcarrier numbers defined by the first mapping rule.
  • the first mapping rule is different depending on the candidate set of DC subcarriers.
  • the first mapping rule defines that the first reference signal is mapped to the subcarrier No. 0 and the subcarrier No. 1 of the 12 subcarriers of the physical resource block.
  • the mapping rule defines mapping the first reference signal to subcarriers other than number 0 subcarriers and not to number 6 subcarriers.
  • the first mapping rule defines that the first reference signal is mapped to the subcarrier No. 0 and the subcarrier No. 1 of the 12 subcarriers of the physical resource block. , No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 6 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier, that is, the first mapping rule is defined.
  • the first reference signal is mapped to subcarriers other than subcarrier No. 11 and not subcarrier No. 5.
  • the first mapping rule defines that the first reference signal is mapped to subcarrier No. 0 and subcarrier No. 1 of the 12 subcarriers of the physical resource block. , No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 5 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier, that is, the first mapping rule is defined.
  • the first reference signal is mapped to subcarriers other than the 11th subcarrier and not the 6th subcarrier.
  • the sending end receives a first mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the first mapping rule is determined by the base station based on the candidate set of DC subcarriers.
  • the implementation of this mode can be performed by the transceiver 32 of FIG.
  • the base station may determine the first mapping rule based on the candidate set of the DC subcarriers. After determining the first mapping rule, the base station may notify the user equipment of the first mapping rule in a semi-static configuration or a dynamic configuration manner.
  • the method of semi-static configuration is as follows: the base station first notifies the user equipment of the first mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the first mapping rule in the subsequent process, or After the validity of the mapping rule is maintained for a period of time, the user equipment is notified to the first mapping rule, or the user equipment is notified of the first mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the first mapping rule is as follows: the base station first notifies the user equipment of the first mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the first mapping rule in the subsequent process, or After the validity of the mapping rule is maintained for a period of time, the user equipment is notified to the first mapping rule, or the user equipment is notified of the first mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the first mapping rule is as follows: the base station first notifies the user equipment
  • the dynamic configuration mode described herein means that the base station first notifies the user equipment of the first mapping rule before sending the first reference signal to the user equipment.
  • the base station may also notify the user equipment of the first mapping rule by using other notification manners, which are not enumerated here.
  • the candidate set of DC subcarriers includes subcarriers 0 and 5 subcarriers, and the first mapping rule defines mapping the first reference signal to 1, 2, 3, 4, 6, 7, 8 of the target physical resource block. For example, when the base station or the user equipment needs to map the first reference signal to the target physical resource block, the first reference signal is mapped to the target physical resource block according to the first mapping rule. No. 1 subcarrier, No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 6 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier, No. 11 subcarrier .
  • the candidate set of DC subcarriers includes subcarriers 0 and 6 subcarriers, and the first mapping rule defines mapping the first reference signal to 1, 2, 3, 4, 5, 7, and 8, of the target physical resource block. For example, when the base station or the user equipment needs to map the first reference signal to the target physical resource block, the first reference signal is mapped to the target physical resource block according to the first mapping rule. No. 1 subcarrier, No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 5 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier, No. 11 subcarrier .
  • the candidate set of DC subcarriers includes subcarriers 11 and 5 subcarriers, and the first mapping rule defines mapping the first reference signal to 0, 1, 2, 3, 4, 6, and 7 of the target physical resource block. For example, when the base station or the user equipment needs to map the first reference signal to the target physical resource block, the first reference signal is mapped to the target physical resource block according to the first mapping rule. No. 0 subcarrier, No. 1 subcarrier, No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 6 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier .
  • the candidate set of DC subcarriers includes subcarriers 11 and 6 subcarriers, and the first mapping rule defines mapping the first reference signal to 0, 1, 2, 3, 4, 5, 7, of the target physical resource block. For example, when the base station or the user equipment needs to map the first reference signal to the target physical resource block, the first reference signal is mapped to the target physical resource block according to the first mapping rule. No. 0 subcarrier, No. 1 subcarrier, No. 2 subcarrier, No. 3 subcarrier, No. 4 subcarrier, No. 5 subcarrier, No. 7 subcarrier, No. 8 subcarrier, No. 9 subcarrier, No. 10 subcarrier .
  • step 501 can be performed by the processor 31 in FIG. 5, and when the transmitting end is the base station, step 501 can be performed by the processor 41 in FIG.
  • the transmitting end sends the first reference signal by using a target physical resource block mapped with the first reference signal.
  • step 502 can be performed by transceiver 32 in FIG. 5, and when the transmitting end is a base station, step 502 can be performed by transceiver 42 in FIG.
  • the receiving end receives the first reference signal transmitted on the subcarrier of the target physical resource block.
  • step 503 can be performed by transceiver 32 in FIG. 5; when the receiving end is a base station, step 503 can be performed by transceiver 42 in FIG.
  • the receiving end performs corresponding processing on the first reference signal received on the subcarrier of the target physical resource block according to the first mapping rule.
  • the receiving end needs to obtain the first mapping rule, and the receiving end includes the following two methods when acquiring the first mapping rule:
  • the receiving end determines the first mapping rule based on the candidate set of DC subcarriers.
  • the receiving end is a user equipment, it can be performed by the processor 31 in FIG. 5; when the receiving end is a base station, it can be executed by the processor 41 in FIG.
  • the receiving end receives the first mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the first mapping rule is a candidate for the base station based on the DC subcarrier.
  • the set is determined.
  • the implementation of this mode can be performed by the transceiver 32 of FIG.
  • the base station determines a first mapping rule based on the candidate set of the DC subcarriers, and maps the first reference signal to the subcarriers of the target physical resource block according to the first mapping rule;
  • the user equipment determines a first mapping rule based on the candidate set of DC subcarriers, and performs corresponding processing on the first reference signal received on the subcarriers of the target physical resource block according to the first mapping rule.
  • the base station determines the first mapping rule based on the candidate set of the DC subcarriers, and notifies the first mapping rule to the user equipment, where the base station maps the first reference signal to the subcarrier of the target physical resource block according to the first mapping rule, and the user The device pairs the slave according to the first mapping rule. Corresponding processing is performed on the first reference signal received on the subcarrier of the target physical resource block.
  • the user equipment determines a first mapping rule based on the candidate set of the DC subcarriers, and maps the first reference signal to the subcarriers of the target physical resource block according to the first mapping rule.
  • the base station determines a first mapping rule based on the candidate set of DC subcarriers, and performs corresponding processing on the first reference signal received from the subcarriers of the target physical resource block according to the first mapping rule.
  • the base station determines the first mapping rule based on the candidate set of the DC subcarriers, and notifies the first mapping rule to the user equipment, where the user equipment maps the first reference signal to the subcarrier of the target physical resource block according to the first mapping rule.
  • the base station performs corresponding processing on the first reference signal received from the subcarriers of the target physical resource block according to the first mapping rule.
  • step 504 can be performed by processor 31 in FIG.
  • step 504 can be performed by processor 41 in FIG.
  • the first mapping rule defines mapping the first reference signal to the subcarrier of the non-DC subcarrier in the physical resource block
  • the first reference signal may be avoided. Loss, to ensure that the receiving end can correctly demodulate the first reference signal.
  • the DC subcarrier is not additionally set, a certain subcarrier in the physical resource block is used as the idle subcarrier, that is, as the DC subcarrier, thereby avoiding The number of downlink subcarriers of the system changes dynamically.
  • the first reference signal may be a PCRS
  • the number of physical resource blocks used by different user equipments may be an odd number or an even number, which may result in different subcarrier numbers corresponding to DC subcarriers of different user equipments.
  • a candidate sub-carrier of the DC sub-carrier defines a DC sub-carrier that is odd for the physical resource block and a DC sub-carrier that is even for the physical resource block, so that when the first reference signal is sent to each user equipment, The two subcarrier numbers defined in the candidate set of the DC subcarriers, each user equipment can correctly demodulate the first reference signal according to the information on the subcarriers of the target physical resource block.
  • the base station may be given the right to obtain the predefined first mapping rule, and the user equipment does not have the right to obtain the predefined first mapping rule. At this time, the base station may notify the scheduled user equipment according to the scheduling. A mapping rule that allows the base station to better schedule and manage.
  • the base station or the user equipment may determine a rule for transmitting data based on the candidate set of the DC subcarriers, and perform corresponding data receiving processing by using the rule.
  • a rule for transmitting data based on the candidate set of the DC subcarriers, and perform corresponding data receiving processing by using the rule.
  • FIG. 8 is a flowchart of a data transceiving method provided in another embodiment of the present application.
  • the receiving end in FIG. 8 may be a user equipment that receives downlink data, or a base station that receives uplink data, when the receiving end is When the user equipment is the user equipment, the corresponding sender is the base station. When the receiver is the base station, the corresponding sender is the user equipment.
  • the data transceiving method comprises the following steps:
  • the transmitting end maps the data to be transmitted and the second reference signal on the subcarriers of the scheduled physical resource block according to the second mapping rule and the candidate set of the DC subcarriers.
  • the second mapping rule defines at least a manner of mapping data and a second reference signal on the DC subcarrier, and the second reference signal includes a DMRS.
  • the transmitting end when transmitting data, the transmitting end synchronously transmits a demodulation reference signal, so that the receiving end of the data can demodulate the received data according to the demodulation reference signal.
  • the second mapping rule indicates that the data is normally mapped on the DC subcarrier, that is, when the physical resource block of the scheduled user equipment includes the DC subcarrier, the transmitting end needs to map the data to be transmitted and the second reference signal.
  • the transmitted data and the second reference signal are mapped to each of the physical resource blocks including the DC subcarriers in a normal manner.
  • the DC subcarrier and the non-DC subcarrier on the physical resource block are not distinguished.
  • the second mapping rule indicates that the physical resource block in which the DC subcarrier is located is mapped according to the 11 subcarrier data, that is, when the physical resource block of the scheduled user equipment includes the DC subcarrier, the transmitting end maps the data to be sent and
  • the data to be transmitted on the physical resource block and the second reference signal are rate matched with 11 subcarriers, and the rate matched information is mapped on 11 subcarriers of the scheduled physical resource block.
  • the 11 subcarriers are not DC subcarriers, and the data and the second reference signal are not mapped on the DC subcarriers in the physical resource block.
  • the transmitting end first acquires the second mapping rule before the mapping data and the second reference signal, and may include at least the following three methods when acquiring the second mapping rule:
  • the transmitting end determines the second mapping rule based on the candidate set of DC subcarriers.
  • the base station may determine the second mapping rule based on the candidate set of DC subcarriers. At this time, the implementation of the mode may be performed by the processor 31 in FIG. 5.
  • the transmitting end is the user equipment
  • the user equipment may determine the second mapping rule based on the candidate set of DC subcarriers according to a predefined manner. At this time, the implementation of the manner may be performed by the processor 41 in FIG. 6.
  • the base station or the user equipment may be made aware of the candidate set of DC subcarriers by a predefined manner.
  • the base station or the user equipment can determine the second mapping rule based on the candidate set of DC subcarriers.
  • the sending end when the sending end is the user equipment, the sending end receives the second mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the second mapping rule is that the base station schedules the user equipment to send the uplink.
  • the second mapping rule is that the base station schedules the user equipment to send the uplink.
  • the scheduled physical resource block includes the DC subcarrier of the user equipment
  • the DC subcarrier based candidate set is determined and sent to the user equipment.
  • the transmitting end is a user equipment, the implementation of this mode can be performed by the transceiver 32 in FIG.
  • the base station may determine the second mapping rule based on the candidate set of the DC subcarriers, and after determining the second mapping rule, the base station may notify the user equipment of the second mapping rule in a semi-static configuration or a dynamic configuration manner.
  • the method of semi-static configuration is as follows: the base station first notifies the user equipment of the second mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the second mapping rule in the subsequent process, or After the validity of the second mapping rule is maintained for a period of time, the user equipment is notified to the second mapping rule, or the user equipment is notified to the second mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the second mapping rule is as follows: the base station first notifies the user equipment of the second mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the second mapping rule in the subsequent process, or After the validity of the second mapping rule is maintained for a period of time, the user equipment is notified to the second mapping rule, or the user equipment is notified to the second mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the second mapping rule is as follows: the base station first notifies the
  • the manner of dynamic configuration mentioned herein means that the base station first notifies the user equipment of the second mapping rule before sending data and demodulating the reference signal to the user equipment.
  • the mapping rule of the data and the demodulation reference signal is defined in the second mapping rule notified by the base station to the user equipment.
  • the sending end when the sending end is the user equipment, the sending end receives the third mapping rule and the fourth mapping rule that are notified by the base station in a semi-static configuration or a dynamic configuration manner, according to the third mapping rule and the fourth mapping.
  • a rule determines the second mapping rule, the third mapping rule defining a manner of mapping data on the DC subcarrier, or the fourth mapping rule defining a manner of mapping the second reference signal on the DC subcarrier.
  • the difference between the third mode and the second mode is that the base station can separately notify the user of the mapping rules of the device data.
  • the mapping rule of the user equipment data is notified by the third mapping rule.
  • the base station may separately notify the user equipment to demodulate the mapping rule of the reference signal, for example, by using the fourth mapping rule to notify the user equipment to demodulate the mapping rule of the reference signal.
  • the user equipment determines a mapping rule for the data
  • after receiving the fourth mapping rule determines a mapping rule for the demodulation reference signal, and then combines the two to obtain the data and the solution.
  • the mapping rule of the reference signal is adjusted, that is, the second mapping rule is obtained.
  • the user equipment may not combine the mapping rule of the third mapping rule with the data and the mapping rule of the fourth mapping rule to the demodulation reference signal, and directly use the data when used.
  • the mapping rule and the mapping rule for the demodulation reference signal may be processed on the received information.
  • the base station may also notify the user equipment of the first mapping rule by using other notification manners, which are not enumerated here.
  • the transmitting end When the transmitting end needs to send data to the receiving end, it first needs to preprocess the data and the demodulation reference signal, then perform rate matching on the pre-processed information, and map the rate-matched information to the scheduled physical resource block. On non-DC subcarriers.
  • the physical resource block includes a DC subcarrier, when the scheduled physical
  • the DC subcarrier is included in the resource block, it is determined, based on the candidate set of the DC subcarrier, which subcarrier on the physical resource block is a DC subcarrier, and then the information that needs to be sent after the rate matching is mapped to the non-DC on the physical resource block.
  • the candidate set of the DC subcarrier which subcarrier on the physical resource block is a DC subcarrier
  • step 505 can be performed by processor 31 in FIG. 5, and when the transmitting end is a base station, step 505 can be performed by processor 41 in FIG.
  • the transmitting end sends the mapped data and the second reference signal by using subcarriers of the physical resource block mapped with the data and the second reference signal.
  • step 506 can be performed by transceiver 32 in FIG. 5, and when the transmitting end is a base station, step 506 can be performed by transceiver 42 in FIG.
  • the receiving end receives data and a second reference signal from subcarriers of the scheduled physical resource block.
  • the scheduled physical resource block includes subcarriers carrying data and a second reference signal.
  • step 507 can be performed by transceiver 32 in FIG. 5, and when the receiving end is a base station, step 507 can be performed by transceiver 42 in FIG.
  • the receiving end performs corresponding processing on the data received from the subcarriers of the scheduled physical resource block and the second reference signal according to the second mapping rule and the candidate set of the DC subcarriers.
  • the receiving end first needs to obtain the second mapping rule, and the receiving end may include at least the following three methods when acquiring the second mapping rule:
  • the receiving end determines the second mapping rule based on the candidate set of DC subcarriers.
  • the base station may determine a second mapping rule based on the candidate set of DC subcarriers, which may be performed by the processor 31 in FIG.
  • the user equipment may determine a second mapping rule based on a candidate set of DC subcarriers according to a predefined manner, which may be performed by the processor 41 in FIG.
  • the base station or the user equipment may be made aware of the candidate set of DC subcarriers by a predefined manner.
  • the base station or the user equipment can determine the second mapping rule based on the candidate set of DC subcarriers.
  • the receiving end when the receiving end is the user equipment, the receiving end receives the second mapping rule that is notified by the base station in a semi-static configuration or a dynamic configuration manner, where the second mapping rule is that the base station is scheduling the user equipment to send the uplink.
  • the second mapping rule is that the base station is scheduling the user equipment to send the uplink.
  • Data and when the scheduled physical resource block includes the DC subcarrier of the user equipment, the DC subcarrier based candidate set is determined and sent to the user equipment.
  • This manner of implementation can be performed by the transceiver 32 of FIG. 5 when the receiving end is a user equipment.
  • the base station may determine the second mapping rule based on the candidate set of the DC subcarriers, and after determining the second mapping rule, the base station may notify the user equipment of the second mapping rule in a semi-static configuration or a dynamic configuration manner.
  • the method of semi-static configuration is as follows: the base station first notifies the user equipment of the second mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the second mapping rule in the subsequent process, or After the validity of the second mapping rule is maintained for a period of time, the user equipment is notified to the second mapping rule, or the user equipment is notified to the second mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the second mapping rule is as follows: the base station first notifies the user equipment of the second mapping rule in the initial access phase of the user equipment, and may not repeatedly notify the user equipment of the second mapping rule in the subsequent process, or After the validity of the second mapping rule is maintained for a period of time, the user equipment is notified to the second mapping rule, or the user equipment is notified to the second mapping rule at a certain time interval, or the user equipment is re-notified when certain specified events are triggered.
  • the second mapping rule is as follows: the base station first notifies the
  • the manner of dynamic configuration mentioned herein means that the base station first notifies the user equipment of the second mapping rule before sending data and demodulating the reference signal to the user equipment.
  • the mapping rule of the data and the demodulation reference signal is defined in the second mapping rule notified by the base station to the user equipment.
  • the receiving end when the receiving end is the user equipment, receives the third mapping rule and the fourth mapping rule that are notified by the base station in a semi-static configuration or a dynamic configuration manner, according to the third mapping rule and the fourth mapping.
  • a rule determines the second mapping rule, the third mapping rule defining a manner of mapping data on the DC subcarrier, or the fourth mapping rule defining a manner of mapping the second reference signal on the DC subcarrier. This manner of implementation can be performed by the transceiver 32 of FIG. 5 when the receiving end is a user equipment.
  • the difference between the third mode and the second mode is that the base station can separately notify the mapping rule of the user equipment data, for example, the third mapping rule notifies the mapping rule of the user equipment data; the base station can also separately notify the user equipment to demodulate the reference signal.
  • the mapping rule for example, notifying the user equipment of the mapping rule of the demodulation reference signal by using the fourth mapping rule.
  • the user equipment determines a mapping rule for the data, and after receiving the fourth mapping rule, determines a mapping rule for the demodulation reference signal, and then combines the two to obtain the data and the solution.
  • the mapping rule of the reference signal is adjusted, that is, the second mapping rule is obtained.
  • the user equipment may not combine the mapping rule of the third mapping rule with the data and the mapping rule of the fourth mapping rule to the demodulation reference signal, and directly use the data when used.
  • the mapping rule and the mapping rule for the demodulation reference signal may be processed on the received information.
  • the base station may also notify the user equipment of the first mapping rule by using other notification manners, which are not enumerated here.
  • the receiving end performs corresponding processing on the data received from the subcarriers of the scheduled physical resource block and the second reference signal according to the second mapping rule and the candidate set of the DC subcarriers, and at least includes the following two implementations:
  • the receiving end determines the DC subcarrier in the physical resource block according to the candidate set of the DC subcarrier, and discards the DC subcarrier in the physical resource block.
  • the data on the carrier That is, the receiving end punctured the information on the DC subcarrier in the physical resource block, and discards the information on the DC subcarrier, where the information may be related content of the data or the demodulation reference signal.
  • the receiving end determines a DC subcarrier in the physical resource block according to the candidate set of the DC subcarrier, performs rate matching on the physical resource block according to 11 subcarriers, and demodulates data, and the 11 subcarriers are not Is a DC subcarrier.
  • step 508 can be performed by processor 31 in FIG. 5, and when the receiving end is a base station, step 508 can be performed by processor 41 in FIG.
  • the receiving end can correctly demodulate the data and the second reference signal, and Since no DC subcarrier is additionally set, a certain subcarrier in the physical resource block is used as an idle subcarrier, that is, as a DC subcarrier, thereby avoiding dynamic changes in the number of downlink subcarriers of the system.
  • the base station may be given the right to obtain the predefined second mapping rule, and the user equipment does not have the right to obtain the predefined second mapping rule. At this time, the base station may notify the scheduled user equipment data according to the scheduling. And mapping rules of the second reference signal, so that the base station can be better scheduled and managed.
  • the base station can directly modulate data on the DC subcarrier without performing rate matching or puncturing on the DC subcarrier.
  • the user equipment may also report to the base station whether the capability of correctly demodulating data modulated on the DC subcarrier is provided, and then the base station determines whether the data can be modulated on the DC subcarrier according to the capability of the user equipment. .
  • FIG. 9 is a flowchart of a method for transmitting and receiving data according to another embodiment of the present application.
  • the receiving end in FIG. 9 may be a base station, and the sending end is a user equipment.
  • the structure of the user equipment may be as shown in FIG.
  • the structure can be seen in Figure 6.
  • the data transceiving method comprises the following steps:
  • the sending end sends, to the receiving end, indication information, where the indication information is used to indicate whether the sending end has the capability of correctly demodulating data modulated on the DC subcarrier.
  • Step 509 can be performed by transceiver 32 in FIG.
  • the receiving end receives the indication information.
  • the receiving end sends data to the sending end according to the indication information. If the indication information indicates that the sending end does not have the capability, the subcarrier carrying the data does not include the DC subcarrier.
  • Steps 510 and 511 can be performed by transceiver 42 in FIG.
  • the subcarrier carrying the data may include a DC subcarrier. That is, if the transmitting end has the ability to correctly demodulate the data modulated on the DC subcarrier, the receiving end can transmit the data on the DC subcarrier.
  • the receiving end can know whether the transmitting end can correctly demodulate the data modulated on the DC subcarrier by receiving the indication information sent by the transmitting end. If the transmitting end can correctly demodulate the data modulated on the receiving DC subcarrier, the receiving end can modulate the data on the receiving DC subcarrier of the transmitting end when transmitting data to the transmitting end. If the transmitting end cannot correctly demodulate the data modulated on the receiving DC subcarrier, when the receiving end sends data to the transmitting end, the position of the frequency domain resource occupied by the data in the frequency domain should avoid the position of the DC subcarrier as much as possible. .
  • the sending end may send the indication information to the receiving end in the process of the random access system.
  • the receiving end can send data to the transmitting end according to the indication information, so that the user equipment with limited capability can be correctly demodulated.
  • the transmitting end may report to the receiving end through the random access preamble sequence or the random access third information (also referred to as Msg3) signal in the process of the random access system whether the direct modulation can be correctly modulated on the receiving DC subcarrier. The data on it.
  • the user equipment reports to the base station whether it has the ability to correctly demodulate the data modulated on the DC subcarrier, and then the base station determines whether the data can be modulated on the DC subcarrier according to the capabilities of the user equipment. This enables the user equipment that has limited interference capability to receive the DC subcarriers to correctly demodulate the data, thereby avoiding the interference of the DC subcarriers on the user equipment with limited capabilities.
  • the center frequency of the downlink bandwidth falls in the middle of the DC subcarrier, and the center frequency of the uplink bandwidth falls between the two uplink subcarriers.
  • the downlink subcarriers on the right side of the center frequency point are offset to the right by half subcarrier spacing from the uplink subcarriers on the right side of the center frequency point, and the downlink subcarriers on the left side of the center frequency point are relatively
  • the uplink subcarriers to the left of the center frequency point are also shifted to the left by a half subcarrier spacing.
  • the structure of the uplink bandwidth of the NR system is the same as that of the downlink bandwidth of the LTE system.
  • n is an integer greater than or equal to zero. Therefore, another embodiment of the present application further provides a data transceiving method.
  • the base station may The user equipment is instructed to offset an uplink subcarrier of the predefined NR system by an odd multiple of a half subcarrier spacing in a specified direction, where the specified direction is an offset direction of the uplink subcarrier of the LTE system with respect to the center frequency point. This can avoid mutual interference when the NR system and the LTE system coexist.
  • a data transceiving method according to another embodiment of the present application is described in detail below with reference to FIG.
  • FIG. 11 is a flowchart of a data transceiving method provided in another embodiment of the present application.
  • the receiving end in FIG. 11 may be a user equipment, and the transmitting end may be a base station.
  • the structure of the user equipment may be as shown in FIG.
  • the structure of the base station can be seen in Figure 6.
  • the data transceiving method comprises the following steps:
  • the sending end sends the indication information to the receiving end, where the indication information is used. And instructing the receiving end to offset the uplink subcarrier of the predefined NR system by an odd multiple of a half subcarrier spacing in a specified direction in the frequency domain, where the specified direction is an offset direction of the uplink subcarrier of the LTE system relative to the center frequency point.
  • Step 512 can be performed by transceiver 42 in FIG.
  • the receiving end receives the indication information.
  • Step 513 can be performed by transceiver 32 in FIG.
  • the transmitting end sends the indication information to the receiving end, where the sending end sends the system message, the high layer signaling, or the downlink control information to the receiving end, where the system message, the high layer signaling, or the downlink control information includes the Instructions.
  • the transmitting end may send the indication information to the receiving end by using system messages, high layer signaling, or downlink control information.
  • the receiving end may determine that the uplink subcarrier of the NR system for transmitting the uplink data is offset from the specified direction by an odd number by receiving the indication information carried by the sending end in the system message, the high layer signaling, or the downlink control information. Half the subcarrier spacing.
  • the distance between the uplink subcarrier and the center frequency of the NR system is 2n+1 half subcarrier spacing, so that the uplink subcarrier of the NR system is orthogonal to the uplink subcarrier of the LTE system, thereby avoiding the coexistence of the NR system and the LTE system. Interfere with each other.
  • the base station may instruct the user equipment to specify the uplink subcarriers of the predefined NR system.
  • the direction is offset by an odd multiple of a half subcarrier spacing, and the specified direction is an offset direction of the uplink subcarrier of the LTE system with respect to the center frequency point. This can avoid mutual interference when the NR system and the LTE system coexist.
  • the transmitting device may be a data transceiver device, or may include a data transceiver device, that is, the data transceiver device may be implemented by using software, hardware, or a combination of the two. All or part of the equipment.
  • the transmitting device may include a processing unit 1010 and a transceiver unit 1020.
  • the processing unit 1010 is configured to implement the functions of at least one of the foregoing steps 501 and 505.
  • the transceiver unit 1020 is configured to implement the functions of at least one of the foregoing steps 502, 506, 509, and 512.
  • the processing unit 810 when the sending device is a user equipment, the processing unit 810 may be implemented by the processor 31 shown in FIG. 5, and the transceiver unit 1020 may be implemented by the transceiver 32 shown in FIG. 5;
  • the processing unit 1010 when the device is a base station, the processing unit 1010 can be implemented by the processor 41 shown in FIG. 6, and the transceiver unit 1020 can be implemented by the transceiver 42 shown in FIG.
  • FIG. 13 shows a block diagram of a receiving device provided by another embodiment of the present application.
  • the receiving device may be a data transceiving device, or may include a data transceiving device, that is, the data transceiving device may be implemented as all or part of the receiving device by software, hardware or a combination of both.
  • the receiving device may include a transceiver unit 1110 and a processing unit 1120.
  • the transceiver unit 1110 is configured to implement the functions of at least one of the foregoing steps 503, 507, 510, and 513.
  • the processing unit 1120 is configured to implement the functions of at least one of the foregoing steps 504 and 508.
  • the transceiver unit 1110 when the receiving device is a user equipment, the transceiver unit 1110 may be implemented by the transceiver 32 shown in FIG. 5, and the processing unit 1120 may be implemented by the processor 31 shown in FIG. 5;
  • the transceiver unit 1110 when the device is a base station, the transceiver unit 1110 can be implemented by the transceiver 42 shown in FIG. 6, and the processing unit 1120 can be implemented by the processor 41 shown in FIG. 6.
  • the data transceiver device when the data transceiver device provided by the foregoing embodiment transmits and receives data, only the division of each functional module described above is illustrated. In actual applications, the function distribution may be completed by different functional modules as needed. The internal structure of the base station and the user equipment is divided into different functional modules to perform all or part of the functions described above.
  • the data transceiving device and the data transceiving method are provided in the same embodiment. For details, refer to the method embodiment, and details are not described herein.
  • the sending device may be referred to as a transmitting end
  • the receiving device may be referred to as a receiving end.
  • the embodiment of the present application further provides a data transceiving system, which includes a transmitting device as shown in FIG. 12 and a receiving device as shown in FIG. 13 .
  • a data transceiving system which includes a transmitting device as shown in FIG. 12 and a receiving device as shown in FIG. 13 .
  • FIG. 12 and FIG. 13 Let me repeat.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本申请实施例提供了一种数据收发方法及装置,涉及网络传输领域。所述数据收发方法包括:接收目标物理资源块的子载波上传输的第一参考信号,根据第一映射规则,对目标物理资源块的子载波上接收到的第一参考信号进行对应处理,第一映射规则至少定义了将第一参考信号映射至物理资源块的10个指定子载波上,这10个指定子载波均不位于DC子载波的候选集合中,第一参考信号包括PCRS。本申请实施例仅选用物理资源块中不作为DC子载波的10个指定的子载波传输第一参考信号,且DC子载波不再额外设置,从而避免系统的下行子载波数量动态变化,并且设计相应的第一参考信号的映射规则,减少或避免DC子载波对参考信号的解调的影响。

Description

数据收发方法及装置
本申请要求于2016年08月12日提交中国专利局、申请号为201610666757.3、发明名称为“数据收发方法及装置”的中国专利申请的优先权,以及于2017年03月24日提交中国专利局、申请号为201710184193.4、发明名称为“数据收发方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及网络传输领域,特别涉及一种数据收发方法及装置。
背景技术
目前在长期演进(Long Term Evolution,LTE)系统中,在带宽中心会设置一个直流子载波,又称为DC(Direct carrier)子载波。由于DC子载波在接收端上产生的直流分量无法被消除而导致直流偏置干扰,该干扰使接收端在接收该子载波上的数据时无法正确解调。为了避免DC子载波对于数据解调的影响,LTE规定该DC子载波上不映射数据,且不参与系统的物理资源块(Physical Resource Block,PRB)的资源索引,其中物理资源块为数据传输的基本调度单元,其在频域上包含12个子载波。在LTE系统中,用户设备(User Equipment,UE)的带宽能力与基站(eNodeB)的带宽能力相同,因此对于用户设备与基站,它们的DC子载波是相同的,可以做统一的处理。
在未来的5G系统中,用户设备的带宽能力可能小于基站的带宽能力。当一个系统内接入多个用户设备后,基站为这些用户设备分配的资源可能不同,而导致这些用户设备的DC子载波的位置也是不同的。如果沿用LTE的设计方式,那么就需要在每个DC子载波的位置上都预留一个空闲子载波(即增加一个子载波并且不用于传输),由于用户设备的实际接入情况不同,预留的空闲子载波的位置与数量均不确定。这种情况会导致了系统的整体带宽将随着用户设备的接入情况动态变化,基站对于PRB的资源索引也将动态变化,这将极大地增加系统设计的复杂度。
在传统的LTE系统中,NB-IoT与MTC的传输方案中,用户设备的带宽能力都小于基站的带宽能力。基站没有为用户设备增加额外的DC子载波,而是利用用户设备的窄带接收机的特性,在接收端通过不同的实现行为避免DC子载波对于数据&参考信号接收的干扰。
NB-IoT与MTC的用户设备都属于窄带接收用户设备,其可以通过用户设备的实现行为以较小的代价避免DC子载波的干扰问题,但未来的用户设备的带宽能力可能会强于NB-IoT与MTC的用户设备,其无法通过单纯的实现行为避免DC子载波的干扰。
发明内容
本申请实施例提供了一种数据收发方法及装置。技术方案如下:
第一方面,提供了一种数据收发方法,应用于接收端,接收端在实现数据收发方法时,首先接收目标物理资源块的子载波上传输的第一参考信号,然后根据第一映射规则,对从目标物理资源块的子载波上接收到的第一参考信号进行对应处理。这里的目标物理资源块包括承载第一参考信号的子载波,整体的系统带宽有多个子载波构成,每个物理资源块包含了12个子载波,目标物理资源块是指在所有的物理资源块中,包括了承载第一参考信号的子载波的物理资源块。这里的第一映射规则至少定义了将第一参考信号映射至物理资源块的10个指定子载波上,这10个指定子载波均不位于DC子载波的候选集合中,DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号,第一参考信号包括相位噪声参考信号(phase noise compensation reference signal,PCRS)。所述相位噪声参考信号随信息的发送同时发送,且与发送的信息所占用的OFDM符号以及物理资源块相关联,其用于对发送信息进行相位噪声补偿。
由于第一映射规则限定了将第一参考信号映射到物理资源块中非DC子载波的子载波上,因此可以避免第一参考信号的丢失,保证接收端可以正确解调出第一参考信号,另外,由于并没有额外设置DC子载波,而是将物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
另外,第一参考信号可以为PCRS,而不同的用户设备使用的物理资源块数量可能为奇数,也可能为偶数,会导致不同用户设备的DC子载波所对应的子载波号不同,因此本申请中将DC子载波的候选集合中限定了针对物理资源块为奇数的DC子载波和针对物理资源块为偶数的DC子载波,这样,在向各个用户设备发送第一参考信号时,只要避开DC子载波的候选集合中限定的两个子载波号,各个用户设备均可以根据目标物理资源块的子载波上的信息正确解调出第一参考信号。
在第一方面的第一种可能的实现中,接收端可以通过如下两种方式获取第一映射规则,第一种方式:接收端可以基于DC子载波的候选集合确定第一映射规则,第一映射规则可以是预定义的,此时不论接收端是用户设备还是基站,接收端均可以获取到预定义的第一映射规则。
第二种方式:当接收端为用户设备时,接收端还可以接收基站通过半静态配置或动态配置的方式通知的第一映射规则,该第一映射规则是该基站基于DC子载波的候选集合确定的。在实际实现时,可以赋予基站获取预定义的第一映射规则的权限,而使用户设备不具备获取预定义的第一映射规则的权限,此时,基站可以根据调度通知被调度的用户设备第一映射规则,从而使得基站可以更好地进行调度和管理。
结合第一方面或者第一方面的第一种可能的实现,在第二种可能的实现中,DC子载波的候选集合包括0号子载波和5号子载波;或者,该候选集合包括0号子载波和6号子载波;或者,该候选集合包括11号子载波和5号子载波;或者,该候选集合包括11号子载波和6号子载波。在实际实现时,系统中可以以其中一种DC子载波的候选集合作为标准,系统中的基站和用户设备均以标准的DC子载波的候选集合收发数据。
结合第一方面、第一方面的第一种可能的实现或者第一方面的第二种可能的实现,在第三种可能的实现中,在候选集合包括0号子载波和5号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11 号子载波上;在该候选集合包括0号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;在该候选集合包括11号子载波和5号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;在该候选集合包括11号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
第一映射规则规定了将第一参考信号映射到物理资源块中不会被作为DC子载波的子载波上,这样不论用户设备的DC子载波为DC子载波的候选集合中的哪一号子载波,只要将第一参考信号映射到了目标物理资源块中非DC子载波的其余10个子载波上,用户设备均可以根据目标物理资源块中非DC子载波的10个子载波中的信息,正确解调出第一参考信号。
结合第一方面、第一方面的第一种可能的实现、第一方面的第二种可能的实现或者第一方面的第三种可能的实现,在第四种可能的实现中,该方法还包括数据和解调参考信号(De Modulation Reference Signal,DMRS)接收的过程,接收端首先从调度的物理资源块的子载波上接收数据和第二参考信号,然后根据第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理。这里调度的物理资源块包括承载数据和第二参考信号的子载波,第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式,第二参考信号包括DMRS。
由于第二映射规则限定了数据和第二参考信号的映射规则,因此可以保证接收端可以正确解调出数据和第二参考信号,另外,由于并没有额外设置DC子载波,而是将物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
结合第一方面、第一方面的第一种可能的实现、第一方面的第二种可能的实现至第一方面的第四种可能的实现中的任一种,在第五种可能的实现中,接收端需要获取第二映射规则,在获取第二映射规则时可以包括如下三种方式,第一种方式:接收端可以基于DC子载波的候选集合确定该第二映射规则,第二映射规则可以是预定义的,此时不论接收端是用户设备还是基站,接收端均可以获取到预定义的第二映射规则。
第二种方式:当接收端为用户设备时,接收端还可以接收基站通过半静态配置或动态配置的方式通知的第二映射规则,该第二映射规则是该基站在调度该用户设备接收下行数据,且所调度的物理资源块包含该用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给该用户设备的;第三种方式:当接收端为用户设备时,接收端还可以接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据该第三映射规则和该第四映射规则,确定该第二映射规则,该第三映射规则定义了在DC子载波上映射数据的方式,或者该第四映射规则定义了在DC子载波上映射第二参考信号的方式。
在实际实现时,可以赋予基站获取预定义的第二映射规则的权限,而使用户设备不具备获取预定义的第二映射规则的权限,此时,基站可以根据调度通知被调度的用户设备数 据和第二参考信号的映射规则,从而使得基站可以更好地进行调度和管理。
结合第一方面、第一方面的第一种可能的实现、第一方面的第二种可能的实现至第一方面的第五种可能的实现中的任一种,在第六种可能的实现中,接收端根据该第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理,包括:当该第二映射规则指示在DC子载波上正常映射数据时,接收端根据该DC子载波的候选集合,确定该物理资源块中的DC子载波,丢弃该物理资源块中DC子载波上的数据;当该第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射时,接收端根据该DC子载波的候选集合,确定该物理资源块中的DC子载波,对该物理资源块按照11个子载波进行速率匹配并解调数据,该11个子载波均不为DC子载波。
当该第二映射规则指示在DC子载波上正常映射数据时,表明调度的物理资源块中的子载波上均被映射了数据,由于物理资源块上DC子载波的数据会产生干扰,为了保证数据的准确性,此时接收端可以对物理资源块上的DC子载波上的数据进行打孔,丢弃该物理资源块中DC子载波上的数据。
当该第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射时,表明调度的物理资源块中的DC子载波上未被映射数据,此时可以仅对物理资源块中的非DC子载波上的数据进行处理即可,从而保证了解调出的数据的准确度。
在另一种可能的实现方式中,接收端为基站,发送端为用户设备,该方法还可以包括:接收端接收发送端发送的指示信息,指示信息用于指示发送端是否具备正确解调调制在直流DC子载波上的数据的能力;
接收端根据指示信息向发送端发送数据,若指示信息指示发送端不具备能力,则承载数据的子载波不包括DC子载波。
用户设备向基站上报是否具备正确解调调制在DC子载波上的数据的能力,然后基站根据用户设备的能力确定是否可以将数据调制在DC子载波上。这样能够使得对处理接收DC子载波的干扰能力有限的用户设备正确解调数据,从而避免了DC子载波对能力受限的用户设备带来的干扰。
在另一种可能的实现方式中,接收端接收发送端发送的指示信息包括:
接收端接收发送端发送的随机接入前导序列或随机接入第三信息,随机接入前导序列或所随机接入第三信息包括该指示信息。
发送端在随机接入系统的过程中向接收端发送该指示信息,这样发送端接入系统之后,接收端可以直接根据该指示信息向发送端发送数据,这样能够使得能力有限的用户设备正确解调数据。
在另一种可能的实现方式中,该方法还可以包括:
当新空口NR系统与长期演进LTE系统共存,NR系统与LTE系统的子载波间隔一致,且NR系统与LTE系统所在的频段相邻或部分重叠时,接收端接收发送端发送的指示信息,指示信息用于指示接收端将预定义的新空口NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,该指定方向为长期演进LTE系统的上行子载波相对于中心频点的偏移方向。
当NR系统与LTE系统共存,两个系统的子载波间隔一致,且两个系统所在的频段相 邻或部分重叠时,基站指示用户设备将预定义的NR系统的上行子载波向指定方向偏移奇数倍的半个子载波间隔,该指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。这样能够避免NR系统与LTE系统共存时相互干扰。
在另一种可能的实现方式中,接收端接收发送端发送的指示信息包括:
接收端接收发送端发送的系统消息、高层信令或下行控制信息,系统消息、高层信令或下行控制信息包括该指示信息。
第二方面,提供了一种数据收发方法,应用于发送端,发送端在实现数据收发方法时,发送端首先根据第一映射规则,将第一参考信号映射在目标物理资源块,然后将利用映射有第一参考信号的目标物理资源块发送第一参考信号。这里所讲的目标物理资源块包括承载第一参考信号的子载波,整体的系统带宽有多个子载波构成,每个物理资源块包含了12个子载波,目标物理资源块是指在所有的物理资源块中,包括了承载第一参考信号的子载波的物理资源块。这里的第一映射规则至少定义了将第一参考信号映射至物理资源块的10个指定子载波上,该10个指定子载波均不位于该DC子载波的候选集合中,DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号,该第一参考信号包括PCRS。
由于第一映射规则限定了将第一参考信号映射到物理资源块中非DC子载波的子载波上,因此接收端根据第一映射规则将第一参考信号映射在目标物理资源块中的非DC子载波上时,可以避免第一参考信号的丢失,保证接收端可以正确解调出第一参考信号,另外,由于并没有额外设置DC子载波,而是将目标物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
另外,第一参考信号可以为PCRS,而不同的用户设备使用的物理资源块数量可能为奇数,也可能为偶数,会导致不同用户设备的DC子载波所对应的子载波号不同,因此本申请中将DC子载波的候选集合中限定了针对物理资源块为奇数的DC子载波和针对物理资源块为偶数的DC子载波,这样,在向各个用户设备发送第一参考信号时,只要避开DC子载波的候选集合中限定的两个子载波号,各个用户设备均可以根据目标物理资源块的子载波上的信息正确解调出第一参考信号。
在第二方面的第一种可能的实现中,发送端需要获取第一映射规则,在获取第一映射规则时可以包括如下两种方式,第一种方式:发送端可以基于DC子载波的候选集合确定该第一映射规则,第一映射规则可以是预定义的,此时不论发送端是用户设备还是基站,发送端均可以获取到预定义的第一映射规则。
当发送端为用户设备时,发送端在获取该第一映射规则时,可以接收基站通过半静态配置或动态配置的方式通知的该第一映射规则,该第一映射规则是该基站基于DC子载波的候选集合确定的。
第二种方式:当发送端为用户设备时,发送端还可以接收基站通过半静态配置或动态配置的方式通知的第一映射规则,该第一映射规则是该基站基于DC子载波的候选集合确定的。在实际实现时,可以赋予基站获取预定义的第一映射规则的权限,而使用户设备不具备获取预定义的第一映射规则的权限,此时,基站可以根据调度通知被调度的用户设备第一映射规则,从而使得基站可以更好地进行调度和管理。
结合第二方面或者第二方面的第一种可能的实现,在第二种可能的实现中,该候选集 合包括0号子载波和5号子载波;或者,该候选集合包括0号子载波和6号子载波;或者,该候选集合包括11号子载波和5号子载波;或者,该候选集合包括11号子载波和6号子载波。在实际实现时,系统中可以以其中一种DC子载波的候选集合作为标准,系统中的基站和用户设备均以标准的DC子载波的候选集合收发数据。
结合第二方面、第二方面的第一种可能的实现或者第二方面的第二种可能的实现,在第三种可能的实现中,在该候选集合包括0号子载波和5号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;在该候选集合包括0号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;在该候选集合包括11号子载波和5号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;在该候选集合包括11号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
第一映射规则规定了将第一参考信号映射到物理资源块中不会被作为DC子载波的子载波上,这样不论用户设备的DC子载波为DC子载波的候选集合中的哪一号子载波,只要将第一参考信号映射到了目标物理资源块中非DC子载波的其余10个子载波上,用户设备均可以根据目标物理资源块中非DC子载波的10个子载波中的信息,正确解调出第一参考信号。
结合第二方面、第二方面的第一种可能的实现、第二方面的第二种可能的实现或者第二方面的第三种可能的实现,在第四种可能的实现中,该方法还包括数据和DMRS发送的过程,发送端根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上,利用映射有数据和第二参考信号的物理资源块的子载波发送映射的数据和第二参考信号。这里所讲的第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式,该第二参考信号包括解调参考信号DMRS。
由于第二映射规则限定了数据和第二参考信号的映射规则,因此发送端在根据第二映射规则映射数据和第二参考信号时,可以保证接收端可以正确解调出数据和第二参考信号,另外,由于并没有额外设置DC子载波,而是将物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
结合第二方面、第二方面的第一种可能的实现、第二方面的第二种可能的实现至第二方面的第四种可能的实现中的任一种,在第五种可能的实现中,发送端需要获取第二映射规则,在获取第二映射规则时,可以包括如下三种方式,第一种方式:发送端基于DC子载波的候选集合确定该第二映射规则,第二映射规则可以是预定义的,此时不论发送端是用户设备还是基站,发送端均可以获取到预定义的第二映射规则。
第二种方式:当发送端为用户设备时,发送端接收基站通过半静态配置或动态配置的方式通知的该第二映射规则,该第二映射规则是该基站在调度该用户设备发送上行数据, 且所调度的物理资源块包含该用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给该用户设备的;第三种方式:当发送端为用户设备时,发送端接收基站通过半静态配置或动态配置的方式通知的第四映射规则和第五映射规则,根据该第四映射规则和该第五映射规则,确定该第二映射规则,该第四映射规则定义了在DC子载波上映射数据的方式,或者该第五映射规则定义了在DC子载波上映射第二参考信号的方式。
在实际实现时,可以赋予基站获取预定义的第二映射规则的权限,而使用户设备不具备获取预定义的第二映射规则的权限,此时,基站可以根据调度通知被调度的用户设备数据和第二参考信号的映射规则,从而使得基站可以更好地进行调度和管理。
结合第二方面、第二方面的第一种可能的实现、第二方面的第二种可能的实现至第二方面的第五种可能的实现中的任一种,在第六种可能的实现中,发送端根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上,包括:当该第二映射规则指示在DC子载波上正常映射数据时,发送端将需要发送的数据和第二参考信号映射在调度的物理资源块的各个子载波上进行发送;当该第二映射规则指示在DC子载波上所在的物理资源块按照11个子载波数据映射时,发送端将需要发送的数据和第二参考信号以11个子载波进行速率匹配,将速率匹配后的信息映射在调度的物理资源块的11个子载波上进行发送,该11个子载波均不为DC子载波。
当该第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射时,发送端按照第二映射规则将数据和第二参考信号映射至调度的物理资源块上时,调度的物理资源块中的DC子载波上未被映射数据,对应的,接收端可以仅对物理资源块中的非DC子载波上的数据进行处理即可,从而保证了解调出的数据的准确度。
在另一种可能的实现方式中,发送端为用户设备,接收端为基站,该方法还可以包括:
发送端向接收端发送指示信息,指示信息用于指示发送端是否具备正确解调调制在直流DC子载波上的数据的能力;
发送端接收接收端根据指示信息发送的数据,若发送端不具备该能力,则承载数据的子载波不包括DC子载波。
用户设备向基站上报是否具备正确解调调制在DC子载波上的数据的能力,然后基站根据用户设备的能力确定是否可以将数据调制在DC子载波上。这样能够使得对处理接收DC子载波的干扰能力有限的用户设备正确解调数据,从而避免了DC子载波对能力受限的用户设备带来的干扰。
在另一种可能的实现方式中,发送端向接收端发送指示信息包括:
发送端向接收端发送随机接入前导序列或随机接入第三信息,随机接入前导序列或所随机接入第三信息包括该指示信息。
在另一种可能的实现方式中,该方法还可以包括:
当新空口NR系统与长期演进LTE系统共存,NR系统与LTE系统的子载波间隔一致,且NR系统与LTE系统所在的频段相邻或部分重叠时,发送端向接收端发送指示信息,指示信息用于指示接收端将预定义的新空口NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,指定方向为长期演进LTE系统的上行子载波相对于中心频点的偏移方向。
当NR系统与LTE系统共存,两个系统的子载波间隔一致,且两个系统所在的频段相 邻或部分重叠时,基站指示用户设备将预定义的NR系统的上行子载波向指定方向偏移奇数倍的半个子载波间隔,该指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。这样能够避免NR系统与LTE系统共存时相互干扰。
在另一种可能的实现方式中,发送端向接收端发送指示信息包括:
发送端向接收端发送系统消息、高层信令或下行控制信息,系统消息、高层信令或下行控制信息包括该指示信息。
第三方面,提供了一种数据收发装置,该数据收发装置包括至少一个单元,该信息的收发装置的各个单元分别用于实现上述第一方面的数据收发方法中对应的步骤。
第四方面,提供了一种数据收发装置,该数据收发装置包括至少一个单元,该信息的收发装置的各个单元分别用于实现上述第二方面的数据收发方法中对应的步骤。
第五方面,提供了一种接收设备,该接收设备包括:处理器、与处理器相连的存储器和接收器,该处理器和接收器分别用于实现上述第一方面的数据收发方法中的对应步骤。
第六方面,提供了一种发送设备,该发送设备包括:处理器、与处理器相连的存储器和发射器,该处理器和发射器分别用于实现上述第二方面的数据收发方法中的对应步骤。
第七方面,提供了一种计算机可读介质,该计算机可读介质存储用于实现第一方面所提供的数据收发方法的指令。
第八方面,提供了一种计算机可读介质,该计算机可读介质存储用于实现第二方面所提供的数据收发方法的指令。
第九方面,提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第一方面所述的方法。
第十方面,提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第二方面所述的方法。
附图说明
图1是本申请部分实施例中提供的用户设备的带宽小于基站的带宽的示意图;
图2是本申请另一部分实施例中提供的用户设备的带宽小于基站的带宽的示意图;
图3是本申请一个实施例中提供的确定DC子载波的候选集合的示意图;
图4是本申请另一个实施例中提供的确定DC子载波的候选集合的示意图;
图5是本申请一个实施例中提供的用户设备的结构示意图;
图6是本申请一个实施例中提供的基站的结构示意图;
图7是本申请一个实施例中提供的数据收发方法的流程图;
图8是本申请另一个实施例中提供的数据收发方法的流程图;
图9是本申请另一个实施例中提供的数据收发方法的流程图;
图10是LTE系统带宽的结构示意图;
图11是本申请另一个实施例中提供的数据收发方法的流程图;
图12是本申请一个实施例中提供的发送设备的框图;
图13是本申请一个实施例中提供的接收设备的框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请实施方式作进一步地详细描述。
在未来的5G系统中,用户设备的带宽可能会小于基站的带宽,如果仍旧将带宽的中心频点作为DC子载波,而不同的用户设备的带宽可能不同,且接入基站的用户设备的数量也不同,这些因素均会导致DC子载波的位置或数量不固定。比如,在图1中存在三个用户设备,在每个用户设备的带宽的中心频点设置一个DC子载波,三个用户设备总共有三个DC子载波,在图2中存在四个用户设备,这四个用户设备总共有四个DC子载波,很显然,按照传统的DC子载波的设定方式,用户设备数量以及所占带宽不同,均可能会导致DC子载波的数量以及位置不同。
为了适应未来用户设备的带宽小于基站的带宽的5G系统,本申请实施例在LTE系统中提出一种新的DC子载波的设计规则,这种设计规则不再引入空白的子载波作为系统的DC子载波,而在系统现有的有效带宽内,选取DC子载波的候选集合,也即将被调度的PBR中的某个子载波指定为DC子载波,从而避免引入多余的空白子载波作为DC子载波而导致系统带宽动态变化。
根据对带宽的分析,如果用户设备接入带宽所占用的PRB数量(每个PRB包含12个子载波)为偶数,则中心频点在两个PRB的边界位置,也即中心频点位于0号子载波与11号子载波的中间,用户设备可以通过实现方式使实际的中心频点落在0号子载波或11号子载波中的一个子载波上的,请参见图3所示。
而如果用户设备接入带宽所占用的PRB数量为奇数,则中心频点落在中心PRB的中心位置,也即中心频点位于5号子载波与6号子载波的中间,用户设备可以通过实现方式使实际的中心频点落在5号子载波或6号号子载波中的一个子载波上,请参见图4所示。
由此可以确定对于任意的接入用户设备,其DC子载波的候选集合一定四个DC子载波的候选集合中的一种,候选集合包括第0号子载波和第5号子载波,或者包括第0号子载波和第6号子载波,或者包括第11号子载波和第5号子载波,或者包括第11号子载波和第6号子载波。
本申请中设置了四种DC子载波的候选集合,在实际实现时,可以确定其中一种候选集合,可以通过预定义的方式或其他方式使用户设备和基站均知晓,后续数据发送或接收过程,均基于确定的该候选集合来实现。
用户设备的结构可以参见图5所示,用户设备包括处理器31、收发器32和存储器33。
处理器31包括一个或者一个以上处理核心,处理器31通过运行软件程序,从而执行各种功能应用以及数据处理。
收发器32可以用于与其它设备进行通信,比如可以与基站进行通信。
存储器33与处理器31相连,比如,存储器33可以通过总线与处理器31相连;存储器33可用于存储软件程序。
存储器33可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(static random access memory,SRAM),电可擦除可编程只读存储器(electrically erasable programmable read-only memory,EEPROM),可擦除可编程只读存储器(erasable programmable read only memory,EPROM),可编程只读存储器(programmable read only memory,PROM),只读存储器(read only memory image,ROM),磁存储器, 快闪存储器,磁盘或光盘。
本领域技术人员可以理解,图5中所示出的用户设备的结构并不构成对用户设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
基站的结构可以参见图6所示,基站包括处理器41、收发器42和存储器43。
处理器41包括一个或者一个以上处理核心,处理器41通过运行软件程序,从而执行各种功能应用以及数据处理。
收发器42可以用于与其它设备进行通信,比如可以与用户设备进行通信。
存储器43与处理器41相连,比如,存储器43可以通过总线与处理器41相连;存储器43可用于存储软件程序。
存储器43可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器,电可擦除可编程只读存储器,可擦除可编程只读存储器,可编程只读存储器,只读存储器,磁存储器,快闪存储器,磁盘或光盘。
本领域技术人员可以理解,图6中所示出的基站的结构并不构成对基站的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
下面通过图7、图8、图9和图11分别解释PCRS的收发过程以及数据的收发过程。
图7是本申请一个实施例中提供的数据收发方法的流程图,在图7中所讲的接收端可以为接收下行数据的用户设备,也可以为接收上行数据的基站,当接收端为用户设备时,对应的发送端为基站,当接收端为基站时,对应的发送端为用户设备,用户设备的结构可以参见图5所示,基站的结构可以参见图6所示。该数据收发方法包括如下步骤:
501,发送端根据第一映射规则,将第一参考信号映射在目标物理资源块。
目标物理资源块包括承载第一参考信号的子载波。换言之,整体的系统带宽有多个子载波构成,每个物理资源块包含了12个子载波,目标物理资源块是指在所有的物理资源块中,包括了承载第一参考信号的子载波的物理资源块。
第一映射规则至少定义了将第一参考信号映射至物理资源块的10个指定子载波上,这10个指定子载波均不位于DC子载波的候选集合中,这里所讲的第一参考信号可以包括PCRS等。
这里所讲的第一映射规则是对系统中各个用户设备的PCRS的映射方式进行的限定。
发送端在使用第一映射规则之前需要先获取该第一映射规则,发送端在获取第一映射规则时至少可以包括如下两种方式:
第一种方式中,发送端基于DC子载波的候选集合确定第一映射规则。
当发送端为基站时,基站可以基于DC子载波的候选集合确定第一映射规则,这里可以由图6中的处理器41来执行。当发送端为用户设备时,用户设备可以根据预定义的方式基于DC子载波的候选集合确定第一映射规则,这里可以由图5中的处理器31来执行。
在实际实现时,当确定了DC子载波的候选集合之后,通过预定义方式可以使得基站或用户设备均可以知晓DC子载波的候选集合。对应的,当基站或用户设备可以基于DC子载波的候选集合确定第一映射规则。
举例来讲,当DC子载波的候选集合包括0号子载波和5号子载波时,则基于DC子载波的候选集合确定的第一映射规则定义了:第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、 8号子载波、9号子载波、10号子载波、11号子载波上,也即第一映射规则定义了将第一参考信号映射到非0号子载波且非5号子载波的子载波上。
这样,当基站或用户设备在利用调度的资源块发送第一参考信号时,可以将第一参考信号映射在第一映射规则限定的上述若干个子载波号对应的子载波上。
类似的,基于DC子载波的候选集合不同,第一映射规则也不同。
比如,在该候选集合包括0号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上,也即第一映射规则定义了将第一参考信号映射到非0号子载波且非6号子载波的子载波上。
还比如,在该候选集合包括11号子载波和5号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上,也即第一映射规则定义了将第一参考信号映射到非11号子载波且非5号子载波的子载波上。
还比如,在该候选集合包括11号子载波和6号子载波时,该第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上,也即第一映射规则定义了将第一参考信号映射到非11号子载波且非6号子载波的子载波上。
第二种方式中,当接收端为用户设备时,发送端接收基站通过半静态配置或动态配置的方式通知的第一映射规则,该第一映射规则是基站基于DC子载波的候选集合确定的。当接收端为用户设备时,该方式的实现可以由图5中的收发器32来执行。
基站可以基于DC子载波的候选集合确定第一映射规则,基站在确定第一映射规则后,还可以通过半静态配置或动态配置的方式向用户设备通知第一映射规则。
这里所讲的半静态配置的方式是指:基站在用户设备初始接入阶段,先向用户设备通知第一映射规则,后续过程中可以不再重复通知用户设备该第一映射规则,或者将第一映射规则的有效性维持一段时间后,再通知用户设备该第一映射规则,或者后续过程中以一定时间间隔通知用户设备该第一映射规则,或者在某些指定事件触发时重新通知用户设备该第一映射规则。
这里所讲的动态配置的方式是指:基站每次在需要向用户设备发送第一参考信号之前,先向用户设备通知第一映射规则。
在实际应用中,基站还可以通过其他的通知方式通知用户设备该第一映射规则,这里就不再一一列举。
以DC子载波的候选集合包含0号子载波和5号子载波,第一映射规则定义了将第一参考信号映射到目标物理资源块的1、2、3、4、6、7、8、9、10、11号子载波上为例,当基站或用户设备需要将第一参考信号映射到目标物理资源块上时,则按照第一映射规则将第一参考信号映射到目标物理资源块的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上。
以DC子载波的候选集合包含0号子载波和6号子载波,第一映射规则定义了将第一参考信号映射到目标物理资源块的1、2、3、4、5、7、8、9、10、11号子载波上为例,当基站或用户设备需要将第一参考信号映射到目标物理资源块上时,则按照第一映射规则将第一参考信号映射到目标物理资源块的1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上。
以DC子载波的候选集合包含11号子载波和5号子载波,第一映射规则定义了将第一参考信号映射到目标物理资源块的0、1、2、3、4、6、7、8、9、10号子载波上为例,当基站或用户设备需要将第一参考信号映射到目标物理资源块上时,则按照第一映射规则将第一参考信号映射到目标物理资源块的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
以DC子载波的候选集合包含11号子载波和6号子载波,第一映射规则定义了将第一参考信号映射到目标物理资源块的0、1、2、3、4、5、7、8、9、10号子载波上为例,当基站或用户设备需要将第一参考信号映射到目标物理资源块上时,则按照第一映射规则将第一参考信号映射到目标物理资源块的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
当发送端为用户设备时,步骤501可以由图5中的处理器31来执行,当发送端为基站时,步骤501可以由图6中的处理器41来执行。
502,发送端利用映射有第一参考信号的目标物理资源块发送第一参考信号。
当发送端为用户设备时,步骤502可以由图5中的收发器32来执行,当发送端为基站时,步骤502可以由图6中的收发器42来执行。
503,接收端接收目标物理资源块的子载波上传输的第一参考信号。
当接收端为用户设备时,步骤503可以由图5中的收发器32来执行;当接收端为基站时,步骤503可以由图6中的收发器42来执行。
504,接收端根据第一映射规则,对目标物理资源块的子载波上接收到的第一参考信号进行对应处理。
类似的,接收端需要获取第一映射规则,接收端在获取第一映射规则时,包括如下两种方式:
在第一种方式中,接收端基于DC子载波的候选集合确定该第一映射规则。当接收端为用户设备时,这里可以由图5中的处理器31来执行;当接收端为基站时,这里可以由图6中的处理器41来执行。
在第二种方式中,当发送端为用户设备时,接收端接收基站通过半静态配置或动态配置的方式通知的该第一映射规则,该第一映射规则是该基站基于DC子载波的候选集合确定的。当接收端为用户设备时,该方式的实现可以由图5中的收发器32来执行。
以发送端为基站,接收端为用户设备为例,基站基于DC子载波的候选集合确定第一映射规则,根据该第一映射规则将第一参考信号映射到目标物理资源块的子载波上;对应的,用户设备基于DC子载波的候选集合确定第一映射规则,根据该第一映射规则,对目标物理资源块的子载波上接收到的第一参考信号进行对应处理。或者,基站基于DC子载波的候选集合确定第一映射规则,将第一映射规则通知给用户设备,基站根据该第一映射规则将第一参考信号映射到目标物理资源块的子载波上,用户设备根据第一映射规则对从 目标物理资源块的子载波上接收到的第一参考信号进行对应处理。
以发送端为用户设备,接收端为基站为例,用户设备基于DC子载波的候选集合确定第一映射规则,根据该第一映射规则将第一参考信号映射到目标物理资源块的子载波上;对应的,基站基于DC子载波的候选集合确定第一映射规则,根据该第一映射规则,对从目标物理资源块的子载波上接收到的第一参考信号进行对应处理。或者,基站基于DC子载波的候选集合确定第一映射规则,将第一映射规则通知给用户设备,用户设备根据该第一映射规则将第一参考信号映射到目标物理资源块的子载波上,基站根据第一映射规则对从目标物理资源块的子载波上接收到的第一参考信号进行对应处理。
当接收端为用户设备时,步骤504可以由图5中的处理器31来执行。
当接收端为基站时,步骤504可以由图6中的处理器41来执行。
综上所述,本申请实施例提供的数据收发方法,由于第一映射规则限定了将第一参考信号映射到物理资源块中非DC子载波的子载波上,因此可以避免第一参考信号的丢失,保证接收端可以正确解调出第一参考信号,另外,由于并没有额外设置DC子载波,而是将物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
另外,第一参考信号可以为PCRS,而不同的用户设备使用的物理资源块数量可能为奇数,也可能为偶数,会导致不同用户设备的DC子载波所对应的子载波号不同,因此本申请中将DC子载波的候选集合中限定了针对物理资源块为奇数的DC子载波和针对物理资源块为偶数的DC子载波,这样,在向各个用户设备发送第一参考信号时,只要避开DC子载波的候选集合中限定的两个子载波号,各个用户设备均可以根据目标物理资源块的子载波上的信息正确解调出第一参考信号。
在实际实现时,可以赋予基站获取预定义的第一映射规则的权限,而使用户设备不具备获取预定义的第一映射规则的权限,此时,基站可以根据调度通知被调度的用户设备第一映射规则,从而使得基站可以更好地进行调度和管理。
在实际应用中,基站或用户设备可以基于DC子载波的候选集合,确定发送数据的规则,利用该规则进行相应的数据接收处理,具体实现可以参见图8中所示的各个步骤。
图8是本申请另一个实施例中提供的数据收发方法的流程图,在图8中所讲的接收端可以为接收下行数据的用户设备,也可以为接收上行数据的基站,当接收端为用户设备时,对应的发送端为基站,当接收端为基站时,对应的发送端为用户设备。该数据收发方法包括如下步骤:
505,发送端根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上。
第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式,第二参考信号包括DMRS。
一般来讲,发送端在发送数据时,会同步发送解调参考信号,以使得数据的接收端可以根据解调参考信号对接收到的数据进行解调。
比如,第二映射规则指示在DC子载波上正常映射数据,也即当调度的用户设备的物理资源块包含DC子载波时,发送端在映射需要发送的数据和第二参考信号时,将需要发送的数据和第二参考信号按照正常方式映射到该包含有DC子载波的物理资源块的各个子 载波上,不对该物理资源块上的DC子载波和非DC子载波进行区分。
还比如,第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射,也即当调度的用户设备的物理资源块包含DC子载波时,发送端在映射需要发送的数据和第二参考信号时,将需要在所述物理资源块上发送的数据和第二参考信号以11个子载波进行速率匹配,将速率匹配后的信息映射在调度的物理资源块的11个子载波上,所述11个子载波均不为DC子载波,而该物理资源块中的DC子载波上则不映射数据和第二参考信号。
在实际实现时,发送端在映射数据和第二参考信号之前,首先获取第二映射规则,在获取第二映射规则时至少可以包括如下三种方式:
第一种方式中,发送端基于DC子载波的候选集合确定该第二映射规则。
当发送端为基站时,基站可以基于DC子载波的候选集合确定第二映射规则,此时,该方式的实现可以由图5中的处理器31来执行。当发送端为用户设备时,用户设备可以根据预定义的方式基于DC子载波的候选集合确定第二映射规则此时,该方式的实现可以由图6中的处理器41来执行。
在实际实现时,当确定了DC子载波的候选集合之后,通过预定义方式可以使得基站或用户设备均可以知晓DC子载波的候选集合。对应的,当基站或用户设备可以基于DC子载波的候选集合确定第二映射规则。
第二种方式中,当发送端为用户设备时,发送端接收基站通过半静态配置或动态配置的方式通知的该第二映射规则,该第二映射规则是该基站在调度该用户设备发送上行数据,且所调度的物理资源块包含该用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给该用户设备的。这种情况下,当发送端为用户设备时,该方式的实现可以由图5中的收发器32来执行。
基站可以基于DC子载波的候选集合确定第二映射规则,基站在确定第二映射规则后,还可以通过半静态配置或动态配置的方式向用户设备通知第二映射规则。
这里所讲的半静态配置的方式是指:基站在用户设备初始接入阶段,先向用户设备通知第二映射规则,后续过程中可以不再重复通知用户设备该第二映射规则,或者将第二映射规则的有效性维持一段时间后,再通知用户设备该第二映射规则,或者后续过程中以一定时间间隔通知用户设备该第二映射规则,或者在某些指定事件触发时重新通知用户设备该第二映射规则。
这里所讲的动态配置的方式是指:基站每次在需要向用户设备发送数据和解调参考信号之前,先向用户设备通知第二映射规则。
在第二种方式中,基站通知给用户设备的第二映射规则中定义了数据和解调参考信号的映射规则。
第三种方式中,当发送端为用户设备时,发送端接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据该第三映射规则和该第四映射规则,确定该第二映射规则,该第三映射规则定义了在DC子载波上映射数据的方式,或者该第四映射规则定义了在DC子载波上映射第二参考信号的方式。当发送端为用户设备时,该方式的实现可以由图5中的收发器32来执行。
第三种方式与第二种方式的区别在于,基站可以单独通知用户设备数据的映射规则, 比如通过第三映射规则通知用户设备数据的映射规则;基站还可以单独通知用户设备解调参考信号的映射规则,比如通过第四映射规则通知用户设备解调参考信号的映射规则。对应的,用户设备在接收到第三映射规则后确定对数据的映射规则,且在接收到第四映射规则后确定对解调参考信号的映射规则,然后将两者合并,得到对数据以及解调参考信号的映射规则,也即得到第二映射规则。
很显然,在第三种方式中,用户设备也可以不将第三映射规则对数据的映射规则以及第四映射规则对解调参考信号的映射规则进行合并,在使用时,直接使用对数据的映射规则以及对解调参考信号的映射规则对接收到的信息进行处理即可。
在实际应用中,基站还可以通过其他的通知方式通知用户设备该第一映射规则,这里就不再一一列举。
发送端在需要向接收端发送数据时,首先需要将数据和解调参考信号进行预处理,然后将预处理后得到的信息进行速率匹配,将速率匹配后的信息映射至调度的物理资源块的非DC子载波上。
在实际实现时,对于需要发送下行数据的基站,或者需要发送上行数据的用户设备,在确定调度的物理资源块之后,均可以得知该物理资源块上是否包含DC子载波,当调度的物理资源块上包含DC子载波时,则基于DC子载波的候选集合确定该物理资源块上哪个子载波为DC子载波,然后将速率匹配后的需要发送的信息映射到该物理资源块上非DC子载波的子载波上。
当发送端为用户设备时,步骤505可以由图5中的处理器31来执行,当发送端为基站时,步骤505可以由图6中的处理器41来执行。
506,发送端利用映射有数据和第二参考信号的物理资源块的子载波发送映射的数据和第二参考信号。
当发送端为用户设备时,步骤506可以由图5中的收发器32来执行,当发送端为基站时,步骤506可以由图6中的收发器42来执行。
507,接收端从调度的物理资源块的子载波上接收数据和第二参考信号。
调度的物理资源块包括承载数据和第二参考信号的子载波。
当接收端为用户设备时,步骤507可以由图5中的收发器32来执行,当接收端为基站时,步骤507可以由图6中的收发器42来执行。
508,接收端根据第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理。
在实际实现时,接收端首先需要获取第二映射规则,接收端在获取第二映射规则时,至少可以包括如下三种方式:
第一种方式中,接收端基于DC子载波的候选集合确定该第二映射规则。
当接收端为基站时,基站可以基于DC子载波的候选集合确定第二映射规则,这里可以由图5中的处理器31来执行。当接收端为用户设备时,用户设备可以根据预定义的方式基于DC子载波的候选集合确定第二映射规则,这里可以由图6中的处理器41来执行。
在实际实现时,当确定了DC子载波的候选集合之后,通过预定义方式可以使得基站或用户设备均可以知晓DC子载波的候选集合。对应的,当基站或用户设备可以基于DC子载波的候选集合确定第二映射规则。
第二种方式中,当接收端为用户设备时,接收端接收基站通过半静态配置或动态配置的方式通知的该第二映射规则,该第二映射规则是该基站在调度该用户设备发送上行数据,且所调度的物理资源块包含该用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给该用户设备的。当接收端为用户设备时,这种方式的实现可以由图5中的收发器32来执行。
基站可以基于DC子载波的候选集合确定第二映射规则,基站在确定第二映射规则后,还可以通过半静态配置或动态配置的方式向用户设备通知第二映射规则。
这里所讲的半静态配置的方式是指:基站在用户设备初始接入阶段,先向用户设备通知第二映射规则,后续过程中可以不再重复通知用户设备该第二映射规则,或者将第二映射规则的有效性维持一段时间后,再通知用户设备该第二映射规则,或者后续过程中以一定时间间隔通知用户设备该第二映射规则,或者在某些指定事件触发时重新通知用户设备该第二映射规则。
这里所讲的动态配置的方式是指:基站每次在需要向用户设备发送数据和解调参考信号之前,先向用户设备通知第二映射规则。
在第二种方式中,基站通知给用户设备的第二映射规则中定义了数据和解调参考信号的映射规则。
第三种方式中,当接收端为用户设备时,接收端接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据该第三映射规则和该第四映射规则,确定该第二映射规则,该第三映射规则定义了在DC子载波上映射数据的方式,或者该第四映射规则定义了在DC子载波上映射第二参考信号的方式。当接收端为用户设备时,这种方式的实现可以由图5中的收发器32来执行。
第三种方式与第二种方式的区别在于,基站可以单独通知用户设备数据的映射规则,比如通过第三映射规则通知用户设备数据的映射规则;基站还可以单独通知用户设备解调参考信号的映射规则,比如通过第四映射规则通知用户设备解调参考信号的映射规则。对应的,用户设备在接收到第三映射规则后确定对数据的映射规则,且在接收到第四映射规则后确定对解调参考信号的映射规则,然后将两者合并,得到对数据以及解调参考信号的映射规则,也即得到第二映射规则。
很显然,在第三种方式中,用户设备也可以不将第三映射规则对数据的映射规则以及第四映射规则对解调参考信号的映射规则进行合并,在使用时,直接使用对数据的映射规则以及对解调参考信号的映射规则对接收到的信息进行处理即可。
在实际应用中,基站还可以通过其他的通知方式通知用户设备该第一映射规则,这里就不再一一列举。
接收端根据第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理,至少包括如下两种实现:
在第一种实现中,当第二映射规则指示在DC子载波上正常映射数据时,接收端根据DC子载波的候选集合,确定物理资源块中的DC子载波,丢弃物理资源块中DC子载波上的数据。也即接收端对物理资源块中DC子载波上的信息进行打孔,丢弃该DC子载波上的信息,这里的信息可以是数据或解调参考信号的相关内容。
在第二种实现中,当第二映射规则指示在DC子载波所在的物理资源块按照11个子 载波数据映射时,接收端根据该DC子载波的候选集合,确定该物理资源块中的DC子载波,对该物理资源块按照11个子载波进行速率匹配并解调数据,该11个子载波均不为DC子载波。
当接收端为用户设备时,步骤508可以由图5中的处理器31来执行,当接收端为基站时,步骤508可以由图6中的处理器41来执行。
综上所述,本申请实施例提供的数据收发方法,由于第二映射规则限定了数据和第二参考信号的映射规则,因此可以保证接收端可以正确解调出数据和第二参考信号,另外,由于并没有额外设置DC子载波,而是将物理资源块中的某个子载波作为空闲子载波,即作为DC子载波,从而避免系统的下行子载波数量动态变化。
在实际实现时,可以赋予基站获取预定义的第二映射规则的权限,而使用户设备不具备获取预定义的第二映射规则的权限,此时,基站可以根据调度通知被调度的用户设备数据和第二参考信号的映射规则,从而使得基站可以更好地进行调度和管理。
在5G新空口(New Radio,NR)中,基站可以直接在DC子载波上调制数据,不需要在DC子载波上进行速率匹配或打孔处理。但是对于不具备处理DC子载波干扰的用户设备来说,如果该用户设备接收基站发送的承载有数据的DC子载波上时,由于该用户设备不能有效地降低DC子载波引入的干扰,因此就会直接影响DC子载波及其附近载波上所调制数据的解调性能。因此,本申请另一实施例中用户设备还可以向基站上报是否具备正确解调调制在DC子载波上的数据的能力,然后基站根据用户设备的能力确定是否可以将数据调制在DC子载波上。这样能够使得对处理接收DC子载波的干扰能力有限的用户设备正确解调数据,从而避免了DC子载波对能力受限的用户设备带来的干扰。下面结合图9详细描述根据本申请另一实施例的数据收发方法。
图9是本申请另一实施例提供的数据收发方法的流程图,在图9中所讲的接收端可以为基站,发送端为用户设备,用户设备的结构可以参见图5所示,基站的结构可以参见图6所示。该数据收发方法包括如下步骤:
509,发送端向接收端发送指示信息,该指示信息用于指示发送端是否具备正确解调调制在DC子载波上的数据的能力。
步骤509可以由图5中的收发器32来执行。
510,接收端接收该指示信息。
511,接收端根据该指示信息向发送端发送数据,若该指示信息指示发送端不具备该能力,则承载该数据的子载波不包括DC子载波。
步骤510和511可以由图6中的收发器42来执行。
应理解,若该指示信息指示发送端具备该能力,则承载该数据的子载波可以包括DC子载波。也就是说,如果发送端具备正确解调调制在DC子载波上的数据的能力,则接收端可以数据调制在DC子载波上发送。
就是说,接收端通过接收发送端发送的该指示信息可以获知发送端能否正确解调调制在DC子载波上的数据的能力。如果发送端能正确解调调制在接收DC子载波上的数据,那么接收端在向发送端发送数据时,可以在发送端的接收DC子载波上调制数据。如果发送端不能正确解调调制在接收DC子载波上的数据,那么接收端在向发送端发送数据时,该数据占用的频域资源在频域上的位置应尽量避开DC子载波的位置。
可选地,步骤510中,发送端可以在随机接入系统的过程中向接收端发送该指示信息。通过在随机接入系统的过程中向接收端发送该指示信息,在发送端接入系统中之后,接收端可以根据该指示信息向发送端发送数据,这样能够使得能力有限的用户设备正确解调数据。例如,发送端可以在随机接入系统的过程中,通过随机接入前导序列或随机接入第三信息(也称为Msg3)信号向接收端上报是否能正确解调直接调制在接收DC子载波上的数据。
用户设备向基站上报是否具备正确解调调制在DC子载波上的数据的能力,然后基站根据用户设备的能力确定是否可以将数据调制在DC子载波上。这样能够使得对处理接收DC子载波的干扰能力有限的用户设备正确解调数据,从而避免了DC子载波对能力受限的用户设备带来的干扰。
在LTE系统中,下行带宽的中心频点落在DC子载波的中间位置,上行带宽的中心频点落在两个上行子载波之间。如图10所示,LTE系统中,中心频点右侧的下行子载波相对于中心频点右侧的上行子载波整体向右偏移半个子载波间隔,中心频点左侧的下行子载波相对于中心频点左侧的上行子载波也整体向左偏移半个子载波间隔。NR系统上行带宽的结构与LTE系统下行带宽的结构相同。当NR系统与LTE系统共存,这两个系统的子载波间隔一致,且这两个系统所在的频段相邻或部分重叠时,由于同一频段内NR系统上行子载波相对于中心频点的距离为2n个半个子载波间隔,LTE系统上行子载波相对于中心频点的距离为2n+1个半个子载波间隔,导致NR系统上行子载波与LTE系统上行子载波无法正交,因此用户设备同时使用NR系统和LTE系统发送上行数据时,会产生干扰。这里,n为大于或等于0的整数。因此,本申请另一实施例还提供了一种数据收发方法,当NR系统与LTE系统共存,两个系统的子载波间隔一致,且两个系统所在的频段相邻或部分重叠时,基站可以指示用户设备将预定义的NR系统的上行子载波向指定方向偏移奇数倍的半个子载波间隔,该指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。这样能够避免NR系统与LTE系统共存时相互干扰。下面结合图11详细描述根据本申请另一实施例的数据收发方法。
图11是本申请另一个实施例中提供的数据收发方法的流程图,在图11中所讲的接收端可以为用户设备,发送端可以为基站,用户设备的结构可以参见图5所示,基站的结构可以参见图6所示。该数据收发方法包括如下步骤:
512,当NR系统与LTE系统共存,NR系统与LTE系统的子载波间隔一致,且NR系统与LTE系统所在的频段相邻或部分重叠时,发送端向接收端发送指示信息,该指示信息用于指示接收端将预定义的NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,该指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。
步骤512可以由图6中的收发器42来执行。
513,接收端接收该指示信息。
步骤513可以由图5中的收发器32来执行。
可选地,步骤512中,发送端向接收端发送指示信息包括:发送端向所述接收端发送系统消息、高层信令或下行控制信息,该系统消息、高层信令或下行控制信息包括该指示信息。
就是说,在同一频段内,对于上行传输,当NR系统与LTE系统共存,两个系统的子 载波间隔一致,且两个系统所在的频段相邻或部分重叠时,发送端可通过系统消息、高层信令或下行控制信息向接收端发送指示信息。相应的,接收端通过接收发送端在系统消息、高层信令或下行控制信息中携带的指示信息,可以确定将预定义的用于发送上行数据的NR系统的上行子载波向指定方向偏移奇数倍的半个子载波间隔。偏移后NR系统的上行子载波与中心频点的距离为2n+1个半个子载波间隔,使得NR系统上行子载波与LTE系统上行子载波正交,从而能够避免NR系统和LTE系统共存时相互干扰。
因此,当NR系统与LTE系统共存,两个系统的子载波间隔一致,且两个系统所在的频段相邻或部分重叠时,基站可以指示用户设备将预定义的NR系统的上行子载波向指定方向偏移奇数倍的半个子载波间隔,该指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。这样能够避免NR系统与LTE系统共存时相互干扰。
图12是本申请实施例中提供的发送设备的结构示意图,该发送设备可以为数据收发装置,或可以包括数据收发装置,也即数据收发装置可以通过软件、硬件或者两者的结合实现成为发送设备的全部或者一部分。该发送设备可以包括:处理单元1010和收发单元1020。
处理单元1010,用于实现上述步骤501和步骤505中至少一个步骤的功能。
收发单元1020,用于实现上述步骤502、步骤506、步骤509和步骤512中至少一个步骤的功能。
相关细节可结合参考上述方法实施例。
可选的,本申请实施例中,当发送设备为用户设备时,处理单元810可以由图5所示的处理器31实现,收发单元1020可以由图5所示的收发器32实现;当发送设备为基站时,处理单元1010可以由图6所示的处理器41实现,收发单元1020可以由图6所示的收发器42实现。
请参考图13,其示出了本申请另一个实施例提供的接收设备的框图。该接收设备可以为数据收发装置,或可以包括数据收发装置,也即数据收发装置可以通过软件、硬件或者两者的结合实现成为接收设备的全部或者一部分。该接收设备可以包括:收发单元1110和处理单元1120。
收发单元1110,用于实现上述步骤503、步骤507、步骤510和步骤513中至少一个步骤的功能。
处理单元1120,用于实现上述步骤504和步骤508中至少一个步骤的功能。
相关细节可结合参考上述方法实施例。
可选的,本申请实施例中,当接收设备为用户设备时,收发单元1110可以由图5所示的收发器32实现,处理单元1120可以由图5所示的处理器31实现;当接收设备为基站时,收发单元1110可以由图6所示的收发器42实现,处理单元1120可以由图6所示的处理器41实现。
需要说明的是:上述实施例提供的数据收发装置在收发数据时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将基站和用户设备的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的数据收发装置与数据收发方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。
还需要补充说明的是,本申请中,如无特殊说明,发送设备均可以称为发送端,接收设备均可以称为接收端。
本申请实施例还提供一种数据收发系统,该数据收发系统包括如图12所示的发送设备以及如图13所示的接收设备,具体可以参见对图12和图13的描述,这里就不再赘述。
上述本申请实施例序号仅仅为了描述,不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本申请的较佳实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (48)

  1. 一种数据收发方法,其特征在于,所述方法包括:
    接收端接收目标物理资源块的子载波上传输的第一参考信号,所述第一参考信号包括相位噪声参考信号PCRS;
    所述接收端根据第一映射规则,对所述目标物理资源块的子载波上接收到的所述第一参考信号进行对应处理;
    其中,所述第一映射规则至少定义了将所述第一参考信号映射至物理资源块的10个指定子载波上,所述10个指定子载波均不位于DC子载波的候选集合中,所述DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述接收端基于DC子载波的候选集合确定所述第一映射规则;或者,
    当接收端为用户设备时,所述接收端接收基站通过半静态配置或动态配置的方式通知的所述第一映射规则,所述第一映射规则是所述基站基于DC子载波的候选集合确定的。
  3. 根据权利要求1所述的方法,其特征在于,
    所述候选集合包括0号子载波和5号子载波;或者,
    所述候选集合包括0号子载波和6号子载波;或者,
    所述候选集合包括11号子载波和5号子载波;或者,
    所述候选集合包括11号子载波和6号子载波。
  4. 根据权利要求3所述的方法,其特征在于,
    在所述候选集合包括0号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括0号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括11号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;
    在所述候选集合包括11号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
  5. 根据权利要求1至4中任一所述的方法,其特征在于,所述方法还包括:
    所述接收端从调度的物理资源块的子载波上接收数据和第二参考信号,所述调度的物理资源块包括承载数据和第二参考信号的子载波,所述第二参考信号包括解调参考信号DMRS;
    所述接收端根据第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的 子载波上接收到的数据和第二参考信号进行对应处理;
    其中,所述第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式。
  6. 根据权利要求5所述的方法,其特征在于,所述方法还包括:
    所述接收端基于DC子载波的候选集合确定所述第二映射规则;或者,
    当接收端为用户设备时,所述接收端接收基站通过半静态配置或动态配置的方式通知的第二映射规则,所述第二映射规则是所述基站在调度所述用户设备接收下行数据,且所调度的物理资源块包含所述用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给所述用户设备的;或者,
    当接收端为用户设备时,所述接收端接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据所述第三映射规则和所述第四映射规则,确定所述第二映射规则,所述第三映射规则定义了在DC子载波上映射数据的方式,或者所述第四映射规则定义了在DC子载波上映射第二参考信号的方式。
  7. 根据权利要求5所述的方法,其特征在于,所述接收端根据所述第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理,包括:
    当所述第二映射规则指示在DC子载波上正常映射数据时,所述接收端根据所述DC子载波的候选集合,确定所述物理资源块中的DC子载波,丢弃所述物理资源块中DC子载波上的数据;
    当所述第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射时,所述接收端根据所述DC子载波的候选集合,确定所述物理资源块中的DC子载波,对所述物理资源块按照11个子载波进行速率匹配并解调数据,所述11个子载波均不为DC子载波。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,所述接收端为基站,所述方法还包括:
    所述接收端接收发送端发送的指示信息,所述指示信息用于指示所述发送端是否具备正确解调调制在DC子载波上的数据的能力,所述发送端为用户设备;
    所述接收端根据所述指示信息向所述发送端发送数据,若所述指示信息指示所述发送端不具备所述能力,则承载所述数据的子载波不包括DC子载波。
  9. 根据权利要求8所述的方法,其特征在于,所述接收端接收发送端发送的指示信息包括:
    所述接收端接收所述发送端发送的随机接入前导序列或随机接入第三信息,所述随机接入前导序列或所随机接入第三信息包括所述指示信息。
  10. 根据权利要求1至7中任一项所述的方法,其特征在于,所述方法还包括:
    当新空口NR系统与长期演进LTE系统共存,所述NR系统与所述LTE系统的子载波间隔一致,且所述NR系统与所述LTE系统所在的频段相邻或部分重叠时,所述接收端接收发送端发送的指示信息,所述指示信息用于指示所述接收端将预定义的NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,所述指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。
  11. 根据权利要求10所述的方法,其特征在于,所述接收端接收发送端发送的指示 信息包括:
    所述接收端接收所述发送端发送的系统消息、高层信令或下行控制信息,所述系统消息、所述高层信令或所述下行控制信息包括所述指示信息。
  12. 一种数据收发方法,其特征在于,所述方法包括:
    发送端根据第一映射规则,将第一参考信号映射在目标物理资源块,所述第一参考信号包括相位噪声参考信号PCRS;
    所述发送端利用映射有所述第一参考信号的目标物理资源块发送所述第一参考信号;
    其中,所述第一映射规则至少定义了将所述第一参考信号映射至物理资源块的10个指定子载波上,所述10个指定子载波均不位于DC子载波的候选集合中,所述DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号。
  13. 根据权利要求12所述的方法,其特征在于,所述方法还包括:
    所述发送端基于DC子载波的候选集合确定所述第一映射规则;或者,
    当发送端为用户设备时,所述发送端接收基站通过半静态配置或动态配置的方式通知的所述第一映射规则,所述第一映射规则是所述基站基于DC子载波的候选集合确定的。
  14. 根据权利要求12所述的方法,其特征在于,
    所述候选集合包括0号子载波和5号子载波;或者,
    所述候选集合包括0号子载波和6号子载波;或者,
    所述候选集合包括11号子载波和5号子载波;或者,
    所述候选集合包括11号子载波和6号子载波。
  15. 根据权利要求14所述的方法,其特征在于,
    在所述候选集合包括0号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括0号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括11号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;
    在所述候选集合包括11号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
  16. 根据权利要求12至15中任一所述的方法,其特征在于,
    所述发送端根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上,所述第二参考信号包括解调参考信号DMRS;
    所述发送端利用映射有数据和第二参考信号的物理资源块的子载波发送映射的数据和第二参考信号;
    其中,所述第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式。
  17. 根据权利要求16所述的方法,其特征在于,所述方法还包括:
    所述发送端基于DC子载波的候选集合确定所述第二映射规则;或者,
    当发送端为用户设备时,所述发送端接收基站通过半静态配置或动态配置的方式通知的所述第二映射规则,所述第二映射规则是所述基站在调度所述用户设备发送上行数据,且所调度的物理资源块包含所述用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给所述用户设备的;或者,
    当发送端为用户设备时,所述发送端接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据所述第三映射规则和所述第四映射规则,确定所述第二映射规则,所述第三映射规则定义了在DC子载波上映射数据的方式,或者所述第四映射规则定义了在DC子载波上映射第二参考信号的方式。
  18. 根据权利要求16所述的方法,其特征在于,所述发送端根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上,包括:
    当所述第二映射规则指示在DC子载波上正常映射数据时,发送端将需要发送的数据和第二参考信号映射在调度的物理资源块的各个子载波上;
    当所述第二映射规则指示在DC子载波上所在的物理资源块按照11个子载波数据映射时,发送端将需要在所述物理资源块上发送的数据和第二参考信号以11个子载波进行速率匹配,将速率匹配后的信息映射在调度的物理资源块的11个子载波上,所述11个子载波均不为DC子载波。
  19. 根据权利要求12至18中任一项所述的方法,其特征在于,所述发送端为用户设备,所述方法还包括:
    所述发送端向接收端发送指示信息,所述指示信息用于指示所述发送端是否具备正确解调调制在直流DC子载波上的数据的能力,所述接收端为基站;
    所述发送端接收所述接收端根据所述指示信息发送的数据,若所述发送端不具备所述能力,则承载所述数据的子载波不包括DC子载波。
  20. 根据权利要求19所述的方法,其特征在于,所述发送端向接收端发送指示信息包括:
    所述发送端向所述接收端发送随机接入前导序列或随机接入第三信息,所述随机接入前导序列或所随机接入第三信息包括所述指示信息。
  21. 根据权利要求12至18中任一项所述的方法,其特征在于,所述方法还包括:
    当新空口NR系统与长期演进LTE系统共存,所述NR系统与所述LTE系统的子载波间隔一致,且所述NR系统与所述LTE系统所在的频段相邻或部分重叠时,所述发送端向接收端发送指示信息,所述指示信息用于指示所述接收端将预定义的NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,所述指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。
  22. 根据权利要求21所述的方法,其特征在于,所述发送端向接收端发送指示信息包括:
    所述发送端向所述接收端发送系统消息、高层信令或下行控制信息,所述系统消息、 所述高层信令或所述下行控制信息包括所述指示信息。
  23. 一种数据收发装置,其特征在于,应用于接收端,所述装置包括:
    收发单元,用于接收目标物理资源块的子载波上传输的第一参考信号,所述第一参考信号包括相位噪声参考信号PCRS;
    处理单元,用于根据第一映射规则,对所述目标物理资源块的子载波上接收到的所述第一参考信号进行对应处理;
    其中,所述第一映射规则至少定义了将所述第一参考信号映射至物理资源块的10个指定子载波上,所述10个指定子载波均不位于DC子载波的候选集合中,所述DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号。
  24. 根据权利要求23所述的装置,其特征在于,
    所述处理单元,还用于基于DC子载波的候选集合确定所述第一映射规则;或者,
    所述收发单元,还用于当接收端为用户设备时,接收基站通过半静态配置或动态配置的方式通知的所述第一映射规则,所述第一映射规则是所述基站基于DC子载波的候选集合确定的。
  25. 根据权利要求23所述的装置,其特征在于,
    所述候选集合包括0号子载波和5号子载波;或者,
    所述候选集合包括0号子载波和6号子载波;或者,
    所述候选集合包括11号子载波和5号子载波;或者,
    所述候选集合包括11号子载波和6号子载波。
  26. 根据权利要求25所述的装置,其特征在于,
    在所述候选集合包括0号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括0号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括11号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;
    在所述候选集合包括11号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
  27. 根据权利要求23至26中任一所述的装置,其特征在于,
    所述收发单元,还用于从调度的物理资源块的子载波上接收数据和第二参考信号,所述调度的物理资源块包括承载数据和第二参考信号的子载波,所述第二参考信号包括解调参考信号DMRS;
    所述处理单元,还用于根据第二映射规则以及DC子载波的候选集合,对从调度的物理资源块的子载波上接收到的数据和第二参考信号进行对应处理;
    其中,所述第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式。
  28. 根据权利要求27所述的装置,其特征在于,
    所述处理单元,还用于基于DC子载波的候选集合确定所述第二映射规则;或者,
    所述收发单元,还用于当接收端为用户设备时,接收基站通过半静态配置或动态配置的方式通知的第二映射规则,所述第二映射规则是所述基站在调度所述用户设备接收下行数据,且所调度的物理资源块包含所述用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给所述用户设备的;或者,
    所述收发单元,还用于当接收端为用户设备时,接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据所述第三映射规则和所述第四映射规则,确定所述第二映射规则,所述第三映射规则定义了在DC子载波上映射数据的方式,或者所述第四映射规则定义了在DC子载波上映射第二参考信号的方式。
  29. 根据权利要求27所述的装置,其特征在于,
    所述处理单元,还用于当所述第二映射规则指示在DC子载波上正常映射数据时,根据所述DC子载波的候选集合,确定所述物理资源块中的DC子载波,丢弃所述物理资源块中DC子载波上的数据;
    所述处理单元,还用于当所述第二映射规则指示在DC子载波所在的物理资源块按照11个子载波数据映射时,根据所述DC子载波的候选集合,确定所述物理资源块中的DC子载波,对所述物理资源块按照11个子载波进行速率匹配并解调数据,所述11个子载波均不为DC子载波。
  30. 根据权利要求23至29中任一项所述的装置,其特征在于,所述装置为基站,
    所述收发单元,还用于接收发送端发送的指示信息,所述指示信息用于指示所述发送端是否具备正确解调调制在直流DC子载波上的数据的能力,所述发送端为用户设备;
    所述收发单元,还用于根据所述指示信息向所述发送端发送数据,若所述指示信息指示所述发送端不具备所述能力,则承载所述数据的子载波不包括DC子载波。
  31. 根据权利要求30所述的装置,其特征在于,
    所述收发单元,具体用于接收所述发送端发送的随机接入前导序列或随机接入第三信息,所述随机接入前导序列或所随机接入第三信息包括所述指示信息。
  32. 根据权利要求23至29中任一项所述的装置,其特征在于,
    所述收发单元,还用于当新空口NR系统与长期演进LTE系统共存,所述NR系统与所述LTE系统的子载波间隔一致,且所述NR系统与所述LTE系统所在的频段相邻或部分重叠时,接收发送端发送的指示信息,所述指示信息用于指示所述装置将预定义的NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,所述指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。
  33. 根据权利要求32所述的装置,其特征在于,
    所述收发单元,具体用于接收所述发送端发送的系统消息、高层信令或下行控制信息,所述系统消息、所述高层信令或所述下行控制信息包括所述指示信息。
  34. 一种数据收发装置,其特征在于,应用于发送端,所述装置包括:
    处理单元,用于根据第一映射规则,将第一参考信号映射在目标物理资源块,所述第一参考信号包括相位噪声参考信号PCRS;
    收发单元,用于将利用映射有所述第一参考信号的目标物理资源块发送所述第一参考信号;
    其中,所述第一映射规则至少定义了将所述第一参考信号映射至物理资源块的10个指定子载波上,所述10个指定子载波均不位于DC子载波的候选集合中,所述DC子载波的候选集合限定了物理资源块中作为DC子载波的载波号。
  35. 根据权利要求34所述的装置,其特征在于,
    所述处理单元,还用于基于DC子载波的候选集合确定所述第一映射规则;或者,
    所述收发单元,还用于当发送端为用户设备时,接收基站通过半静态配置或动态配置的方式通知的所述第一映射规则,所述第一映射规则是所述基站基于DC子载波的候选集合确定的。
  36. 根据权利要求34所述的装置,其特征在于,
    所述候选集合包括0号子载波和5号子载波;或者,
    所述候选集合包括0号子载波和6号子载波;或者,
    所述候选集合包括11号子载波和5号子载波;或者,
    所述候选集合包括11号子载波和6号子载波。
  37. 根据权利要求36所述的装置,其特征在于,
    在所述候选集合包括0号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括0号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波、11号子载波上;
    在所述候选集合包括11号子载波和5号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、6号子载波、7号子载波、8号子载波、9号子载波、10号子载波上;
    在所述候选集合包括11号子载波和6号子载波时,所述第一映射规则定义了第一参考信号映射在物理资源块的12个子载波中的0号子载波、1号子载波、2号子载波、3号子载波、4号子载波、5号子载波、7号子载波、8号子载波、9号子载波、10号子载波上。
  38. 根据权利要求34至37中任一所述的装置,其特征在于,
    所述处理单元,还用于根据第二映射规则以及DC子载波的候选集合,将需要发送的数据和第二参考信号映射在调度的物理资源块的子载波上,所述第二参考信号包括解调参考信号DMRS;
    所述收发单元,还用于利用映射有数据和第二参考信号的物理资源块的子载波发送映射的数据和第二参考信号;
    其中,所述第二映射规则至少定义了在DC子载波上映射数据和第二参考信号的方式。
  39. 根据权利要求38所述的装置,其特征在于,
    所述处理单元,还用于基于DC子载波的候选集合确定所述第二映射规则;或者,
    所述收发单元,还用于当发送端为用户设备时,接收基站通过半静态配置或动态配置 的方式通知的所述第二映射规则,所述第二映射规则是所述基站在调度所述用户设备发送上行数据,且所调度的物理资源块包含所述用户设备的DC子载波时,基于DC子载波的候选集合确定并发送给所述用户设备的;或者,
    所述收发单元,还用于当发送端为用户设备时,接收基站通过半静态配置或动态配置的方式通知的第三映射规则和第四映射规则,根据所述第三映射规则和所述第四映射规则,确定所述第二映射规则,所述第三映射规则定义了在DC子载波上映射数据的方式,或者所述第四映射规则定义了在DC子载波上映射第二参考信号的方式。
  40. 根据权利要求38所述的装置,其特征在于,
    所述收发单元,还用于当所述第二映射规则指示在DC子载波上正常映射数据时,将需要发送的数据和第二参考信号映射在调度的物理资源块的各个子载波上进行发送;
    所述收发单元,还用于当所述第二映射规则指示在DC子载波上所在的物理资源块按照11个子载波数据映射时,将需要在所述物理资源块上发送的数据和第二参考信号以11个子载波进行速率匹配,将速率匹配后的信息映射在调度的物理资源块的11个子载波上进行发送,所述11个子载波均不为DC子载波。
  41. 根据权利要求34至40中任一项所述的装置,其特征在于,所述装置为用户设备,
    所述收发单元,还用于向接收端发送指示信息,所述指示信息用于指示所述发送端是否具备正确解调调制在直流DC子载波上的数据的能力,所述接收端为基站;
    所述收发单元,还用于接收所述接收端根据所述指示信息发送的数据,若所述发送端不具备所述能力,则承载所述数据的子载波不包括DC子载波。
  42. 根据权利要求41所述的装置,其特征在于,
    所述收发单元,还用于向所述接收端发送随机接入前导序列或随机接入第三信息,所述随机接入前导序列或所随机接入第三信息包括所述指示信息。
  43. 根据权利要求34至40中任一项所述的装置,其特征在于,
    所述收发单元,还用于当新空口NR系统与长期演进LTE系统共存,所述NR系统与所述LTE系统的子载波间隔一致,且所述NR系统与所述LTE系统所在的频段相邻或部分重叠时,向接收端发送指示信息,所述指示信息用于指示所述接收端将预定义的NR系统的上行子载波在频域上向指定方向偏移奇数倍的半个子载波间隔,所述指定方向为LTE系统的上行子载波相对于中心频点的偏移方向。
  44. 根据权利要求43所述的装置,其特征在于,
    所述收发单元,具体用于向所述接收端发送系统消息、高层信令或下行控制信息,所述系统消息、所述高层信令或所述下行控制信息包括所述指示信息。
  45. 一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1-11任意一项所述的方法。
  46. 一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行如权利要求12-22任意一项所述的方法。
  47. 一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行如权利要求1-11任意一项所述的方法。
  48. 一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行如权利要求12-22任意一项所述的方法。
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