WO2021056227A1 - Procédé et appareil destinés à transmettre un signal de référence - Google Patents

Procédé et appareil destinés à transmettre un signal de référence Download PDF

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WO2021056227A1
WO2021056227A1 PCT/CN2019/107646 CN2019107646W WO2021056227A1 WO 2021056227 A1 WO2021056227 A1 WO 2021056227A1 CN 2019107646 W CN2019107646 W CN 2019107646W WO 2021056227 A1 WO2021056227 A1 WO 2021056227A1
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prs
resource
reference signal
symbol
index
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PCT/CN2019/107646
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English (en)
Chinese (zh)
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黄甦
于莹洁
王艺
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华为技术有限公司
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Priority to CN201980100416.1A priority Critical patent/CN114402677A/zh
Priority to PCT/CN2019/107646 priority patent/WO2021056227A1/fr
Publication of WO2021056227A1 publication Critical patent/WO2021056227A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of communications, and in particular to a method and device for transmitting reference signals.
  • the downlink positioning method of the terminal equipment based on the cellular network is that the serving cell and the neighboring cell send a downlink reference signal to the terminal device, and the terminal device receives the downlink reference signal sent by the serving cell and the neighboring cell, and obtains the measurement quantity by measuring the downlink reference signal.
  • the positioning server, the serving cell, or the terminal device can determine the current location information of the terminal device based on the measurement quantity.
  • the downlink reference signal may be called a positioning reference signal (positioning reference signal, PRS).
  • the PRS measured by the terminal equipment may come from a far away cell.
  • the field strength when the PRS reaches the terminal equipment may be weak.
  • the industry proposes to use dedicated resources to transmit the PRS. Further, in order to improve resource utilization, the industry proposes frequency division multiplexing of the dedicated resources by the PRS of each cell.
  • the cell reuse capability is low.
  • the current technology supports PRS frequency division multiplexing of up to 6 cells.
  • the present application provides a method and device for transmitting reference signals, which can improve cell reuse capability compared with the prior art.
  • a method for transmitting a reference signal includes: generating resource configuration information of the reference signal, and the frequency domain density of the reference signal resource indicated by the resource configuration information is 1; and sending to a terminal device The resource configuration information.
  • the frequency domain density is 1, which means that in 1 resource block (resource block, RB), the average number of resource elements (RE) occupied by each port signal is 1.
  • the frequency domain density of each RB is 1.
  • the frequency domain density is 1, which means that in one RB, the number of REs occupied by the single-port signal is 1.
  • the single-port signal refers to a reference signal sent using a single port.
  • the reference signal in this application may be a single-port signal.
  • the solution provided in the present application is used to configure the reference signal resource, and the number of REs occupied by the reference signal of each cell within 1 RB is all 1. This can support frequency division multiplexing for reference signals of up to 12 cells, that is, up to 12 cells can transmit reference signals at the same time.
  • the reference signal in this document may be PRS.
  • the present application can also be applied to other scenarios involving multiple cells sending reference signals to terminal devices through frequency division multiplexing.
  • the reference signal is given different names.
  • the reference signal is the PRS as an example for description.
  • the method provided in the first aspect includes: generating resource configuration information of the PRS, where the frequency domain density of the PRS resource indicated by the resource configuration information is 1; and sending the resource configuration information to a terminal device.
  • the PRS pattern is configurable.
  • the absolute value of the offset of the RE mapping of the PRS resource on the adjacent symbols in the time slot is 1 or 2.
  • the number of symbols included in the PRS resource is greater than 6 and less than or equal to 12, and the absolute value of the offset is 1 or 2.
  • the number of symbols included in the PRS resource is less than or equal to 6, and the absolute value of the offset is 2, wherein the time slot includes 12 or 14 symbols.
  • the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; and generating PRS resource configuration information based on the PRS pattern.
  • the PRS pattern satisfies formula (1) or formula (2) in the following embodiments.
  • the PRS pattern is obtained according to formula (1) or formula (2) in the following embodiments.
  • the absolute value of the offset of the resource element RE mapping the PRS resource on the adjacent symbol in the half slot is 1.
  • the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
  • the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; and generating PRS resource configuration information based on the PRS pattern.
  • the PRS pattern satisfies formula (3), formula (4) or formula (5) in the following embodiments.
  • the PRS pattern is obtained according to formula (3), formula (4) or formula (5) in the following embodiments.
  • Obtaining the PRS pattern by formula (3) or formula (4) can make the RE mapped to the PRS resource in a time slot have the half-slot reset attribute. Therefore, this application can support the PRS of the NR cell and the PRS of the LTE cell. Frequency division multiplexing. In addition, obtaining the PRS pattern by formula (3) or formula (4) can also make the REs mapped by the PRS resources occupy all the REs in one RB as much as possible.
  • the PRS in this article can also be a two-port signal.
  • the frequency domain density is 1, which means that within one RB, the two-port signal equivalently occupies 2 REs.
  • the following two situations may be included.
  • the number of REs occupied by each port in the two-port signal is 2, but the two ports occupy the same two REs, which are distinguished by orthogonal codes or different sequences on the two REs.
  • the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; and generating PRS resource configuration information based on the PRS pattern.
  • the PRS pattern satisfies formula (6) or formula (7) in the following embodiments.
  • the PRS pattern is obtained according to formula (6) or formula (7) in the following embodiments.
  • the method further includes: sending the PRS to the terminal device based on the resource configuration information of the PRS.
  • the first aspect describes the solution provided by this application from the perspective of a network device
  • the second aspect described below describes the solution provided by this application from the perspective of a terminal device. It should be understood that the description of the second aspect corresponds to the description of the first aspect. For the explanation and beneficial effects of the related content described in the second aspect, reference may be made to the description of the first aspect, which will not be repeated here.
  • a method for transmitting a reference signal includes: receiving PRS resource configuration information from a network device, where the frequency domain density of the PRS resource indicated by the resource configuration information is 1; Resource configuration information to obtain PRS resources.
  • the PRS pattern is configurable.
  • the absolute value of the offset of the resource element (RE) mapped to the adjacent symbols in the time slot of the PRS resource is 1 or 2.
  • the number of symbols included in the PRS resource is greater than 6 and less than or equal to 12, and the absolute value of the offset is 1 or 2.
  • the number of symbols included in the PRS resource is less than or equal to 6, and the absolute value of the offset is 2, wherein the time slot includes 12 or 14 symbols.
  • the PRS pattern of the PRS resource satisfies formula (1) or formula (2) in the following embodiment.
  • the absolute value of the offset of the resource element RE mapping the resource element RE on the adjacent symbol in the half slot of the PRS resource is 1.
  • the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
  • the PRS pattern of the PRS resource satisfies formula (3), formula (4) or formula (5) in the following embodiments.
  • Obtaining the PRS pattern by formula (3) or formula (4) can make the RE mapped to the PRS resource in a time slot have the half-slot reset attribute. Therefore, this application can support the PRS of the NR cell and the PRS of the LTE cell. Frequency division multiplexing. In addition, obtaining the PRS pattern by formula (3) or formula (4) can also make the REs mapped by the PRS resources occupy all the REs in one RB as much as possible.
  • the PRS in this article can also be a two-port signal.
  • the frequency domain density is 1, which means that within one RB, the two-port signal equivalently occupies 2 REs.
  • the following two situations may be included:
  • the number of REs occupied by each port in the two-port signal is 2, but the two ports occupy the same two REs, which are distinguished by orthogonal codes or different sequences on the two REs.
  • the PRS pattern of the PRS resource satisfies formula (6) or formula (7) in the following embodiments.
  • the method further includes: on the PRS resource, receiving a PRS sent by a network device.
  • a communication device in a third aspect, can be used to execute the method in the first aspect or the method in the second aspect.
  • the communication device may include a module for executing the method in the method in the first aspect or the second aspect.
  • a communication device in a fourth aspect, includes a processor coupled with a memory.
  • the memory is used to store a computer program or instruction, and the processor is used to execute the computer program or instruction stored in the memory, so that the first aspect Or the method in the second aspect is executed.
  • the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method in the first aspect or the second aspect.
  • the communication device includes one or more processors.
  • the communication device may further include a memory coupled with the processor.
  • the communication device may include one or more memories.
  • the memory can be integrated with the processor or provided separately.
  • the communication device may also include a transceiver.
  • a chip in a fifth aspect, includes a processing module and a communication interface, the processing module is used to control the communication interface to communicate with the outside, and the processing module is also used to implement the method in the first aspect or the second aspect.
  • a computer-readable storage medium on which a computer program (also referred to as an instruction or code) for implementing the method in the first aspect or the second aspect is stored.
  • the computer when the computer program is executed by a computer, the computer can execute the method in the first aspect or the second aspect.
  • the computer may be a communication device.
  • a computer program product includes a computer program (also referred to as an instruction or code), which when executed by a computer causes the computer to implement the method in the first aspect or the second aspect .
  • the computer may be a communication device.
  • An eighth aspect provides a communication system, including the communication device provided by the third aspect for executing the method provided by the first aspect, and the communication device provided by the third aspect for executing the method provided by the second aspect.
  • the communication device provided in the third aspect for performing the method provided in the first aspect may be referred to as a network device or a cell base station.
  • the cell base station may be equivalent to the cell.
  • the communication device provided by the third aspect for executing the method provided by the second aspect may be referred to as a terminal device.
  • Figure 1 is a schematic diagram of a downlink positioning solution for terminal equipment.
  • FIGS 2 and 3 are schematic diagrams of communication systems that can be applied to the present application.
  • Figure 4 is a schematic diagram of time-frequency resources.
  • Fig. 5 is a schematic flowchart of a method for transmitting a reference signal according to an embodiment of the present application.
  • 6 to 12 are schematic diagrams of PRS patterns in the embodiments of the application.
  • Fig. 13 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • Fig. 14 is another schematic block diagram of a communication device according to an embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a network device according to an embodiment of the present application.
  • Fig. 16 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario of this application.
  • 110 in FIG. 1 represents a network device participating in the downlink positioning of a terminal device, and 120 represents a terminal device to be located.
  • the multiple network devices 110 send downlink reference signals to the terminal device 120, and the terminal device 120 receives and measures the downlink reference signals sent by the multiple network devices 110, and obtains multiple measurement quantities. Location, the location of the terminal device 120 can be obtained.
  • at least three network devices should participate in positioning.
  • FIG. 1 shows three network devices participating in positioning, which is not limited in this application, and more network devices may participate in positioning in actual applications.
  • the network device 110 shown in FIG. 1 may include a network device in a serving cell and a network device in a neighboring cell.
  • the network equipment in the serving cell may be referred to as a serving base station
  • the network equipment in the neighboring cell may be referred to as a neighboring base station.
  • network equipment in this document can be replaced with “cell”, and the cell is the cell where the network equipment is located.
  • the downlink positioning scheme of the terminal device shown in FIG. 1 can be described as: the serving cell and neighboring cells send downlink reference signals to the terminal device, and the terminal device receives the downlink reference signals sent by the serving cell and neighboring cells, and measures the downlink reference signals.
  • the signal obtains the measurement amount
  • the positioning server, the serving cell, or the terminal device can obtain the current location information of the terminal device based on the measurement amount.
  • the downlink reference signal may be called a positioning reference signal (positioning reference signal, PRS).
  • PRS positioning reference signal
  • each cell uses dedicated resources in a frequency division multiplexing manner to transmit the PRS to the terminal device.
  • the current technology cannot support more than 6 cells to send PRS at the same time, resulting in low cell reuse capability.
  • this application proposes a PRS resource pattern with a frequency domain density of 1, which can make it possible to reuse up to 12 cells within 1 symbol, that is, support 12 cells to transmit PRS at the same time. Compared with the prior art, it can improve Cell reuse capability.
  • embodiments of the present application will be described.
  • the downlink positioning scenario shown in FIG. 1 is an application scenario of this application, but this application is not limited to this.
  • this application can also be applied to other scenarios involving frequency division multiplexing of multiple cells.
  • the downlink reference signal sent by the network device may be referred to as a positioning reference signal (PRS).
  • PRS positioning reference signal
  • the downlink reference signal sent by the network device can be given other names according to application requirements.
  • the lower line reference signal is the PRS.
  • LTE long term evolution
  • 5G fifth generation mobile communication
  • M2M machine to machine communication
  • NR new radio
  • 5G system can also be called an NR system.
  • Fig. 2 is a schematic diagram of a communication architecture that can be applied to embodiments of the present application.
  • the communication architecture includes terminal equipment (represented as UE in FIG. 2), a radio access network (NG-RAN), and a core network.
  • NG-RAN radio access network
  • the core network includes other functions such as access and mobility management function (AMF) and location management function (LMF).
  • AMF implements functions such as a gateway, LMF implements functions such as a positioning center, and the AMF and LMF are connected through an NLs interface.
  • the radio access network includes one or more ng-eNBs and gNBs.
  • ng-eNB refers to a long term evolution (LTE) base station that accesses the 5G core network
  • gNB refers to a 5G base station that accesses the 5G core network.
  • Communication between ng-eNB and gNB, or between two ng-eNBs, or between two gNBs is through the Xn interface.
  • the Xn interface may also be referred to as the XnAP interface.
  • the wireless access network is connected to the core network via the AMF through the NG-C interface.
  • the terminal equipment is connected to the radio access network via the ng-eNB through the LTE-Uu interface.
  • the terminal equipment can also be connected to the wireless access network via the gNB through the NR-Uu interface.
  • the core network can directly communicate with terminal equipment through the LPP/NPP protocol.
  • the communication architecture may include one or more base stations (including ng-eNB and gNB).
  • the communication architecture may include one or more terminal devices, for example, including one or more terminal device groups (UE set as shown in FIG. 2).
  • UE terminal device groups
  • a gNB can send data or control signaling to one or more terminal devices. Multiple gNBs can also send data or control signaling to one terminal device at the same time.
  • the ng-eNB in FIG. 2 can also be replaced with a transmission point (TP) (TP as shown in FIG. 2).
  • TP transmission point
  • FIG. 3 is a schematic diagram of another communication architecture that can be applied to the embodiments of the present application.
  • the difference from the communication architecture shown in FIG. 2 is that in the communication architecture shown in FIG. 3, a location management component (LMC) is added to the gNB, and the LMC can assume part of the functions of the LMF. If you want to realize this part of the LMF function that the LMC can undertake, there is no need for the wireless access network to introduce the 5G core network through the AMF.
  • the gNB does not need to report the measurement results reported by the terminal equipment to the core network, which can save signaling overhead, thereby reducing transmission delay.
  • the positioning efficiency can be improved.
  • UE is the terminal equipment being positioned;
  • gNB or eNB is the serving base station or neighboring cell base station;
  • LMF or LMC is the positioning server (or can be called the positioning service center), which is used to collect UE
  • the reported measurement information and the location information of the base station are also used to perform location calculation based on the measurement information and the location of the base station to determine the location of the UE.
  • the network equipment involved in the embodiments of this application can be used to communicate with one or more terminals, and can also be used to communicate with one or more base stations with partial terminal functions (such as macro base stations and micro base stations, such as access points). , The communication between).
  • the base station may be an evolved Node B (eNB) in an LTE system, or a base station (gNB) in a 5G system or an NR system.
  • the base station may also be an access point (AP), a transport point (TRP), a central unit (CU), or other network entities, and may include some or some of the functions of the above network entities. All functions.
  • the network device in the embodiment of the present application may be the gNB or eNB shown in FIG. 2 or FIG. 3, or may also be an LMF.
  • the terminal equipment involved in the embodiments of this application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, Wireless communication equipment, user agent or user device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminals in the public land mobile network (PLMN) that will evolve in the future Equipment, etc.
  • PLMN public land mobile network
  • resource elements resource elements, RE
  • subcarriers subcarriers
  • resource blocks resource blocks
  • symbols symbol
  • time slots slot
  • subcarriers subcarriers
  • Frame is the concept of time-frequency domain resources.
  • One frame includes multiple subframes in the time domain. As shown in Fig. 4, 1 frame includes 10 subframes.
  • the subframe includes 2 slots in the time domain. As shown in FIG. 4, subframe #0 includes slot #0 and slot #1.
  • a time slot includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols (referred to as symbols in this text) in the time domain. For example, for a regular cyclic prefix (CP), one slot includes 14 symbols, and for an extended CP, one slot includes 12 symbols.
  • OFDM orthogonal frequency division multiplexing
  • the time slot includes multiple resource blocks (RB) in the frequency domain.
  • RB resource blocks
  • RB represents a resource unit with 12 consecutive subcarrier widths in the frequency domain. This is shown in the box labeled RB in Figure 4.
  • the RB can also become a physical resource block (PRB).
  • PRB physical resource block
  • a resource element represents a resource unit of 1 subcarrier in the frequency domain and 1 symbol in the time domain. This is shown in the box labeled RE in Figure 4.
  • the time domain length of the RB is not limited.
  • RB can be regarded as a concept in the frequency domain.
  • One time slot includes multiple RBs
  • One symbol includes multiple RBs
  • One RB includes 12 REs.
  • subcarriers correspond to REs in a one-to-one correspondence.
  • FIG. 5 is a schematic flowchart of a method for transmitting a reference signal according to an embodiment of the application. The method includes the following steps.
  • the network device generates PRS resource configuration information, and the frequency domain density of the PRS resource indicated by the resource configuration information is 1.
  • S520 The network device sends PRS resource configuration information to the terminal device.
  • the terminal device after receiving the resource configuration information of the PRS, the terminal device can learn the PRS resource, and then can receive the PRS issued by the network device on the PRS resource.
  • the frequency domain density mentioned in this article is 1, which means that within 1 RB, the average number of REs occupied by each port signal is 1.
  • the frequency domain density of each RB is 1.
  • the frequency domain density is 1, which means that in one RB, the number of REs occupied by the single-port signal is 1.
  • the single-port signal refers to a reference signal sent using a single port.
  • the PRS in this application may be a single-port signal.
  • the PRS resources are configured using the solution provided in this application, and the number of REs occupied by the PRS of each cell within 1 RB is all 1. This can support PRS frequency division multiplexing of up to 12 cells, that is, up to 12 cells can transmit PRS at the same time.
  • each cell occupies 1 RE each in a frequency division multiplexing manner, that is, different cells occupy different REs.
  • the PRS resource indicated by the resource configuration information of the PRS may have multiple PRS patterns.
  • the pattern of PRS resources in this application is configurable, so that flexible configuration of PRS resources can be realized.
  • the PRS pattern mentioned below means the pattern of the PRS resource.
  • the absolute value of the offset O of the RE mapping of the PRS resource on the adjacent symbols in the slot is 1 or 2.
  • the offset O may have different values.
  • Case 1 The number of mapped symbols of the PRS resource in the slot is greater than 6, and less than or equal to 12, and the absolute value of the offset O is 1 or 2.
  • 1 slot includes 12 or 14 symbols.
  • one slot includes 14 symbols
  • one slot includes 12 symbols.
  • the value of the offset O for mapping the RE of the PRS resource on the adjacent symbol in the time slot can be determined as appropriate according to the application requirements.
  • the PRS pattern satisfies the following formula (1).
  • n 0,1,2,...
  • p represents the PRS port number.
  • ⁇ represents the sub-carrier spacing.
  • k represents the frequency domain index of the RE. It should be understood that k indicates the number of subcarriers between the frequency point of the RE and a certain fixed frequency point.
  • n the PRS sequence index
  • N represents the number of symbols contained in the PRS resource.
  • the value of can be any of ⁇ 0,1,2,3,4,5,6,7,8,9,10,11 ⁇ .
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • N represents the number of symbols contained in the PRS resource.
  • the value of N is 12 or 6.
  • the PRS resource occupies 12 consecutive or 6 consecutive symbols in 1 time slot. It should be understood that in practical applications, the value of N can be determined according to application requirements.
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • the value of O can be a negative integer or a positive integer.
  • (N, O) can have 6 different values. Among them, when the value of N is 12, the value of O can be -1, 1, -2, or 2. When the value of N is 6, the value of O can be 2 or -2.
  • the PRS pattern can be obtained based on formula (1).
  • Can take Any of them The value of can be any of ⁇ 0,1,2,3,4,5,6,7,8,9,10,11 ⁇ .
  • N is equal to 12
  • for regular CP Can take any one of ⁇ 0,1,2 ⁇
  • for extended CP The value can be 0.
  • N is equal to 6
  • for extended CP It can be any one of ⁇ 0,1,2,...,6 ⁇ .
  • variable The meaning is that the corresponding PRS pattern is extended to the index of the RE occupied on the first symbol of the time slot in the RB.
  • variable in formula (1) The meaning of can be replaced with the index in the RB corresponding to the RE occupied on the first symbol of the PRS resource.
  • the formula (1) is transformed into the formula (2) shown below.
  • n 0,1,2,...
  • step S510 includes: acquiring a PRS pattern; and generating PRS resource configuration information according to the PRS pattern.
  • the PRS pattern satisfies the above formula (1) or formula (2).
  • step S510 the PRS pattern is obtained according to the above formula (1) or formula (2).
  • the absolute value of the offset of the RE mapping of the PRS resource on the adjacent symbols in the half slot is 1.
  • the PRS resource includes N symbols, where the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
  • f(N/2) symbols have an offset of 6 REs relative to the first (N-f(N/2)) symbols.
  • f(N/2) represents the remainder of (N/2), which can be the remainder of upwards or the remainder of downwards.
  • the PRS pattern may satisfy the following formula (3).
  • n 0,1,2,...
  • p represents the PRS port number.
  • ⁇ represents the sub-carrier spacing.
  • k represents the frequency domain index of the RE. It should be understood that k indicates the number of subcarriers between the frequency point of the RE and a certain fixed frequency point.
  • n the PRS sequence index
  • N represents the number of symbols contained in the PRS resource.
  • the value of can be any of ⁇ 0,1,2,3,4,5,6,7,8,9,10,11 ⁇ .
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • N represents the number of symbols contained in the PRS resource.
  • the value of N can be supported to include 12.
  • N the value of N can be determined according to application requirements.
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • the value of O can be a negative integer or a positive integer.
  • the absolute value of the value of the offset O can be supported as 1.
  • the first offset indicates that the last 6 symbols of the 12 symbols in the PRS resource have an additional 6 RE offsets relative to the first 6 symbols.
  • the first offset of the first 6 symbols is 0, and the first offset of the last 6 symbols is 6.
  • the second offset indicates that the offset of the RE mapping of the PRS resource on the adjacent symbol is only related to the symbol index in the half slot.
  • the PRS pattern can be obtained based on formula (3). among them, Can take Any of them, The value of can be any of ⁇ 0,1,2,3,4,5,6,7,8,9,10,11 ⁇ .
  • N is equal to 12
  • regular CP Can take any one of ⁇ 0,1,2 ⁇ ; for extended CP, The value can be 0.
  • the second offset makes the RE mapped to the PRS resource in one time slot have a half-slot reset attribute. That is, the offset O of the RE mapping of the PRS resource on the adjacent symbol is only related to the symbol index in the half slot. Therefore, this application can support frequency division multiplexing of the PRS of the NR cell and the PRS of the LTE cell.
  • the NR cell adopts the embodiment of the application to configure the PRS, so that the frequency division multiplexing of the PRS of the NR cell and the PRS of the LTE cell can be realized.
  • the first offset can make The RE mapped by the PRS resource occupies all REs in one RB as much as possible.
  • variable The meaning is that the corresponding PRS pattern is extended to the index of the RE occupied on the first symbol of the time slot in the RB.
  • variable in formula (3) The meaning of can be replaced with the index in the RB corresponding to the RE occupied on the first symbol of the PRS resource. Accordingly, the formula (3) is transformed into the formula (4) shown below.
  • n 0,1,2,...
  • step S510 includes: acquiring a PRS pattern; and generating PRS resource configuration information according to the PRS pattern.
  • the PRS pattern satisfies formula (3) or formula (4).
  • step S510 the PRS pattern is obtained according to formula (3) or formula (4).
  • Obtaining the PRS pattern by formula (3) or formula (4) can make the RE mapped to the PRS resource in a time slot have the half-slot reset attribute. Therefore, this application can support the PRS of the NR cell and the PRS of the LTE cell. Frequency division multiplexing. In addition, obtaining the PRS pattern by formula (3) or formula (4) can also make the REs mapped by the PRS resources occupy all the REs in one RB as much as possible.
  • the PRS pattern may satisfy the following formula (5).
  • n 0,1,2,...
  • step S510 includes: acquiring a PRS pattern; generating PRS resource configuration information according to the PRS pattern, where the PRS pattern satisfies formula (5).
  • step S510 the PRS pattern is obtained according to formula (5).
  • the method of configuring the PRS is described by taking the PRS as a single-port signal as an example. It should be noted that the method for configuring PRS provided in this application may also be applicable to the configuration of two-port PRS.
  • the frequency domain density is 1, which means that within one RB, the two-port signal equivalently occupies 2 REs.
  • the following two situations may be included:
  • the number of REs occupied by each port in the two-port signal is 2, but the two ports occupy the same two REs, which are distinguished by orthogonal codes or different sequences on the two REs.
  • the two-port PRS pattern may satisfy the following formula (6).
  • n 0,1,2,...
  • p represents the PRS port number.
  • ⁇ represents the sub-carrier spacing.
  • k represents the frequency domain index of the RE. It should be understood that k indicates the number of subcarriers between the frequency point of the RE and a certain fixed frequency point.
  • n represents the RB index of the PRS resource mapping.
  • ⁇ is an intermediate variable, which is related to the number of PRS ports. When the number of PRS ports is 1, ⁇ is 1, and when the number of PRS ports is 2, ⁇ is 2.
  • k′ represents the frequency-domain orthogonal cover code (OCC) code index.
  • N represents the number of symbols contained in the PRS resource.
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • the two-port PRS pattern may satisfy the following formula (7).
  • n 0,1,2,...
  • p represents the PRS port number.
  • ⁇ represents the sub-carrier spacing.
  • k represents the frequency domain index of the RE. It should be understood that k indicates the number of subcarriers between the frequency point of the RE and a certain fixed frequency point.
  • n represents the RB index of the PRS resource mapping.
  • ⁇ is an intermediate variable, which is related to the number of PRS ports. When the number of PRS ports is 1, ⁇ is 1, and when the number of PRS ports is 2, ⁇ is 2.
  • k′ represents the frequency-domain orthogonal cover code (OCC) code index.
  • ⁇ represents the frequency domain density of PRS resources.
  • the frequency domain density of the PRS resource corresponding to the PRS pattern obtained according to formula (7) is 1. It should be understood that when the value of ⁇ is 2, the frequency domain density of the PRS resource corresponding to the PRS pattern obtained according to formula (7) is 2.
  • N represents the number of symbols contained in the PRS resource.
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols.
  • N represents the number of symbols contained in the PRS resource.
  • the supported values of N include 12 and 6.
  • the PRS resource occupies 12 consecutive or 6 consecutive symbols in 1 time slot.
  • N can also be determined according to application requirements.
  • O represents the offset of the RE mapping of the PRS resource on two adjacent symbols, and the value of O can be a negative integer or a positive integer.
  • the supported values of O include -1, 1, -2, 2.
  • formula (6) and formula (7) can be applied to the case where the PRS is a single-port signal, and also applicable to the case where the PRS is a two-port signal.
  • N 12
  • regular CP The value of can be any one of ⁇ 0,1,2 ⁇ ; for extended CP, The value can be 0.
  • N 6
  • regular CP The value of can be any one of ⁇ 0,1,...,8 ⁇ ; for extended CP, The value of can be any one of ⁇ 0,1,...,6 ⁇ .
  • a PRS pattern is acquired; according to the PRS pattern, PRS resource configuration information is generated.
  • the PRS pattern satisfies formula (6) or formula (7).
  • step S510 the PRS pattern is obtained according to formula (6) or formula (7).
  • step S510 the PRS pattern can be obtained based on any one of formula (1) to formula (7); and the resource configuration information of the PRS is generated according to the PRS pattern.
  • the PRS pattern is configurable, so the flexible configuration of the PRS can be realized.
  • the method in the embodiment shown in FIG. 5 further includes: the network device sends the PRS to the terminal device based on the resource configuration information of the PRS. That is, the PRS is sent on the PRS resource indicated by the resource configuration information.
  • the PRS resource can be obtained by parsing and then receiving the PRS issued by the network device on the PRS resource.
  • the present application can support a maximum of 12 cells to transmit PRS at the same time by setting the frequency domain density of the PRS to 1, which can effectively improve the cell reuse capability compared to the prior art.
  • the interference of PRS between different cells can be avoided by muting.
  • the PRSs of two or more cells are configured with a mute pattern. The mute pattern can ensure that only one cell sends PRS at the same time.
  • the methods and operations implemented by the terminal device in the foregoing method embodiments can also be implemented by components (such as chips or circuits) that can be used in the terminal device.
  • the methods and operations implemented by the network device in the foregoing method embodiments may also be implemented by a network device. Operations can also be implemented by components (such as chips or circuits) that can be used in network devices.
  • each network element such as a transmitting end device or a receiving end device, includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of protection of this application.
  • the embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules based on the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one process.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other feasible division methods in actual implementation. The following is an example of dividing each function module corresponding to each function as an example.
  • FIG. 13 is a schematic block diagram of a communication device 1300 according to an embodiment of the application.
  • the communication device 1300 includes a transceiver unit 1310 and a processing unit 1320.
  • the transceiver unit 1310 can communicate with the outside, and the processing unit 1310 is used for data processing.
  • the transceiving unit 1310 may also be referred to as a communication interface or a communication unit.
  • the communication device 1300 may be used to perform the actions performed by the terminal device in the above method embodiment.
  • the communication device 1300 may be called a terminal device, and the transceiver unit 1310 is used to perform the terminal device side in the above method embodiment.
  • the processing unit 1320 is configured to perform processing-related operations on the terminal device side in the above method embodiments.
  • the communication device 1300 may be used to perform the actions performed by the network device in the above method embodiment.
  • the communication device 1300 may be called a network device, and the transceiver unit 1310 is used to perform the network device in the above method embodiment.
  • the processing unit 1320 is configured to perform processing-related operations on the network device side in the above method embodiments.
  • the communication device 1300 is used to perform the actions performed by the network device in the above method embodiment, and the processing unit 1320 is used to generate resource configuration information of the reference signal, and the frequency of the reference signal resource indicated by the resource configuration information
  • the domain density is 1; the transceiver unit 1310 is used to send resource configuration information to the terminal device.
  • the absolute value of the offset of the RE mapped to the adjacent symbol in the slot of the reference signal resource is 1 or 2.
  • the number of symbols included in the reference signal resource is greater than 6 and less than or equal to 12, and the absolute value of the offset is 1 or 2; or the number of symbols included in the reference signal resource is less than or equal to 6, and the absolute value of the offset is Is 2, where the time slot includes 12 or 14 symbols.
  • the absolute value of the offset of the resource element RE mapping the reference signal resource on the adjacent symbol in the half slot is 1.
  • the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
  • the reference signal is a two-port signal.
  • the processing unit 1320 is configured to: obtain a resource pattern of the reference signal, which is configurable; and generate resource configuration information of the reference signal according to the resource pattern of the reference signal.
  • the reference signal is PRS
  • the PRS pattern satisfies any one of formulas (1) to (7) described above.
  • the reference signal is a PRS
  • the processing unit 1320 is configured to obtain the resource pattern of the reference signal according to any one of formula (1) to formula (7) described above.
  • the processing unit 1320 in the above embodiment may be implemented by a processor or a processor-related circuit.
  • the transceiver unit 1310 may be implemented by a transceiver or a transceiver-related circuit.
  • the transceiving unit 1310 may also be referred to as a communication unit or a communication interface.
  • an embodiment of the present application also provides a communication device 1400.
  • the communication device 1400 includes a processor 1410, the processor 1410 is coupled with a memory 1420, the memory 1420 is used to store computer programs or instructions, and the processor 1410 is used to execute the computer programs or instructions stored in the memory 1420, so that The method is executed.
  • the communication device 1400 may further include a memory 1420.
  • the communication device 1400 may further include a transceiver 1430, and the transceiver 1430 is used for receiving and/or sending signals.
  • the processor 1410 is configured to control the transceiver 1430 to receive and/or send signals.
  • the communication device 1400 is used to implement the operations performed by the terminal device in the foregoing method embodiments.
  • the processor 1410 is used to implement the processing-related operations performed by the terminal device in the foregoing method embodiment
  • the transceiver 1430 is used to implement the transceiving-related operations performed by the terminal device in the foregoing method embodiment.
  • the communication device 1400 is used to implement the operations performed by the network device in the above method embodiments.
  • the processor 1410 is used to implement the processing-related operations performed by the network device in the above method embodiment
  • the transceiver 1430 is used to implement the transceiving-related operations performed by the network device in the above method embodiment.
  • the embodiment of the present application also provides a communication device 1500, and the communication device 1500 may be a terminal device or a chip.
  • the communication device 1500 may be used to perform operations performed by the terminal device in the foregoing method embodiments.
  • FIG. 15 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 15 only one memory and processor are shown in FIG. 15. In an actual terminal device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiving unit 1510 and a processing unit 1520.
  • the transceiving unit 1510 may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit 1520 may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 1510 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 1510 can be regarded as the sending unit, that is, the transceiving unit 1510 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the transceiving unit 1510 is used to perform the receiving operation in step S520 in FIG. 5, and/or the transceiving unit 1510 is further used to perform other transceiving-related steps performed by the terminal device.
  • the transceiver unit 1510 is further configured to receive a reference signal (for example, PRS) issued by a network device based on the resource configuration information of the reference signal.
  • the processing unit 1520 is configured to perform other processing-related steps performed by the terminal device in the embodiment of the present application.
  • the processing unit 1520 is configured to parse the resource configuration information of the reference signal received by the transceiver unit 1510, and then obtain the reference signal resource.
  • FIG. 15 is only an example and not a limitation, and the foregoing terminal device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 15.
  • the chip When the communication device 1500 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a communication device 1600, and the communication device 1600 may be a network device or a chip.
  • the communication apparatus 1600 may be used to perform operations performed by a network device in the foregoing method embodiments.
  • FIG. 16 shows a simplified schematic diagram of the base station structure.
  • the base station includes 1610 parts and 1620 parts.
  • the 1610 part is mainly used for receiving and sending radio frequency signals and the conversion between radio frequency signals and baseband signals; the 1620 part is mainly used for baseband processing and controlling the base station.
  • the 1610 part can generally be called a transceiver unit, transceiver, transceiver circuit, or transceiver.
  • the 1620 part is usually the control center of the base station, and may generally be referred to as a processing unit, which is used to control the base station to perform processing operations on the network device side in the foregoing method embodiments.
  • the transceiver unit of part 1610 may also be called a transceiver or a transceiver, etc., which includes an antenna and a radio frequency circuit, and the radio frequency circuit is mainly used for radio frequency processing.
  • the device for implementing the receiving function in part 1610 can be regarded as the receiving unit, and the device for implementing the sending function as the sending unit, that is, the 1610 part includes the receiving unit and the sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the 1620 part may include one or more single boards, and each single board may include one or more processors and one or more memories.
  • the processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If there are multiple boards, each board can be interconnected to enhance processing capabilities. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processing at the same time. Device.
  • the transceiver unit of part 1610 is used to perform the sending operation in step S520 in FIG. 5, and/or the transceiver unit of part 1610 is also used to perform other operations performed by the network device in the embodiment of the present application.
  • Transceiving-related steps for example, part 1610 is also used to send the reference signal to the terminal device based on the resource configuration information of the reference signal.
  • Part 1620 is used to perform step S510 in FIG. 5, and/or part 1620 is also used to perform processing related steps performed by the network device in the embodiment of the present application.
  • FIG. 16 is only an example and not a limitation, and the foregoing network device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 16.
  • the chip When the communication device 1600 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
  • An embodiment of the present application also provides a communication system, including the network device and the terminal device in the above embodiment.
  • the embodiment of the present application also provides a computer-readable storage medium on which is stored computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the foregoing method embodiments.
  • the computer when the computer program is executed by a computer, the computer can implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.
  • the embodiments of the present application also provide a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system at the operating system layer can be any one or more computer operating systems that implement business processing through processes, such as Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer can include applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be run according to the methods provided in the embodiments of the application.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.
  • Computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (digital versatile disc, DVD), etc.), etc. ), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • magnetic storage devices for example, hard disks, floppy disks, or tapes, etc.
  • optical disks for example, compact discs (CD), digital versatile discs (digital versatile disc, DVD), etc.
  • smart cards and flash memory devices for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.
  • the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to: wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • processors mentioned in the embodiments of this application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM).
  • RAM can be used as an external cache.
  • RAM may include the following various forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM) , Double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct RAM Bus RAM (DR RAM).
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous DRAM
  • Double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM Direct RAM Bus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the essence of the technical solution of this application, or the part that contributes to the existing technology, or the part of the technical solution, can be embodied in the form of a computer software product, and the computer software product is stored in a storage
  • the computer software product includes several instructions, which are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media may include, but are not limited to: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks, etc., which can store programs The medium of the code.

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Abstract

Un procédé et un dispositif destinés à transmettre un signal de référence sont divulgués. Le procédé comprend : la génération d'informations de configuration de ressource d'un signal de référence, la densité de domaine de fréquence d'une ressource de signal de référence indiquée par les informations de configuration de ressource étant unique ; et l'envoi des informations de configuration de ressource à un équipement terminal. Grâce à la réalisation de la densité de domaine de fréquence de la ressource de signal de référence unique, au maximum 12 cellules peuvent être prises en charge pour envoyer simultanément des signaux de référence. Par comparaison avec l'état de la technique, la présente invention peut améliorer efficacement la capacité de multiplexage de cellules.
PCT/CN2019/107646 2019-09-25 2019-09-25 Procédé et appareil destinés à transmettre un signal de référence WO2021056227A1 (fr)

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