WO2020221081A1 - 传输探测参考信号srs的方法和装置 - Google Patents
传输探测参考信号srs的方法和装置 Download PDFInfo
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- WO2020221081A1 WO2020221081A1 PCT/CN2020/086179 CN2020086179W WO2020221081A1 WO 2020221081 A1 WO2020221081 A1 WO 2020221081A1 CN 2020086179 W CN2020086179 W CN 2020086179W WO 2020221081 A1 WO2020221081 A1 WO 2020221081A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
Definitions
- This application relates to the field of communications, and more specifically, to a method and device for transmitting a sounding reference signal SRS.
- LTE Long term evolution
- UTDOA uplink time difference of arrival
- UoA uplink angle of arrival
- RTT multi-cell round trip time
- the terminal device to send a sounding reference signal (SRS), and the network device measures the SRS sent by the terminal device. Since the terminal device and the network device may be out of synchronization, the network device needs to search for the position of the SRS in the time domain when receiving the SRS. Such a search process can be completed through time-domain related operations. For example, the network device generates a sequence of SRS in advance, uses the sequence to slide correlation in the received signal, and captures the correlation peak.
- SRS sounding reference signal
- a network device acquires a correlation peak, it detects SRS, and then can be based on SRS measurements such as Relative Time of Arrival (RTOA), Angle of Arrival (AOA), Transceiving Time Difference (Rx –Tx time difference).
- RTOA Relative Time of Arrival
- AOA Angle of Arrival
- Rx –Tx time difference Transceiving Time Difference
- the present application provides a method and device for transmitting a sounding reference signal SRS, which can improve the accuracy of detecting SRS and help improve positioning accuracy.
- a method for transmitting a sounding reference signal SRS including: a terminal device receives first information from a network device, the first information includes interleaving information, and the interleaving information is used to determine whether the same antenna port is Information about interleaved resources of SRS transmitted on different time units; determining an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes resources corresponding to SRS signals transmitted on the same antenna port in different time units A pattern interleaved in the frequency domain; sending SRS according to the SRS resource mapping pattern can interleave SRS signals on the same antenna port in different time units, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.
- the interleaving information includes the offset of resource element RE mapping between adjacent time units; the terminal device determines the SRS resource mapping pattern according to the first information, including: The terminal device determines the SRS resource mapping pattern according to the offset of the resource element RE mapping between the adjacent time units.
- the terminal device may determine the interleaving pattern based on the offset of the resource element RE mapping between adjacent time units sent by the network device to facilitate interleaving transmission.
- the interleaving information further includes the number of comb teeth and the time domain repetition factor.
- the interleaving information includes a time domain repetition factor and the number of comb teeth; wherein, the terminal device determines the SRS resource mapping pattern according to the first information, including: The time domain repetition factor and the number of comb teeth are used to calculate the RE mapping offset between adjacent time units; the terminal device determines the SRS resource mapping pattern according to the RE mapping offset between adjacent time units .
- the terminal device may calculate the RE mapping offset of resource elements between adjacent time units based on the time domain repetition factor and the number of comb teeth sent by the network device, so that the interleaving pattern may be determined to facilitate interleaving transmission.
- the first information further includes SRS resource configuration information.
- the SRS resource configuration information includes the interleaving information.
- the interleaving information includes a positioning indication.
- the network device can multiplex the function parameters in the SRS resource indication set function to realize the interleaving indication function.
- a positioning function positioning
- the usage parameter is multiplexed to realize the interleaving indication function. That is to say, the parameter (usage) of the SRS resource indication collection function can be set as the positioning function to realize the interleaving indication.
- the terminal device determines the SRS resource mapping pattern according to the RE mapping offset between adjacent time units, including:
- the terminal device determines the SRS resource mapping pattern according to the following formula:
- Is the initial cyclic shift in the SRS resource configuration, The total number of cyclic shifts configured for SRS resources, Is the number of ports in the SRS resource configuration, p i 1000+i, p i is the port number of the SRS resource, i represents the port index, Is the transmit comb number occupied by port p i on symbol l′,
- the sending comb number configured for the SRS resource K TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource.
- the O is calculated by the following formula:
- the O is sent by the network device to the terminal device.
- the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the interleaving information includes an interleaving indication, such as a newly added staggering parameter.
- the terminal device receives the first information from the network device includes: the terminal device receives the first signaling from the network device, and the first signaling includes the first information.
- the first signaling may be PDCCH or MAC CE, so as to realize dynamic indication.
- the terminal device receiving the first information from the network device includes:
- the terminal device receives a radio resource control RRC message from the network device, where the RRC message includes the first information.
- a method for transmitting a sounding reference signal SRS including: a network device determines interleaving information, where the interleaving information is used to determine information about interleaving resources of SRS transmitted on the same antenna port in different time units; The device sends first information, the first information includes the interleaving information, and the first information is used by the terminal device to determine an SRS resource mapping pattern, where the SRS resource mapping pattern includes the same antenna port in different time units.
- the resources corresponding to the SRS signals transmitted on the above are interleaved patterns in the frequency domain, so that the terminal device can interleave the SRS signals of the same antenna port in different time units, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.
- the interleaving information includes the offset of the resource element RE mapping between adjacent time units.
- the network device provides the terminal device with the resource element RE mapping offset between adjacent time units, so that the terminal device can determine the interleaving based on the resource element RE mapping offset between adjacent time units sent by the network device. Pattern to facilitate interleaved transmission.
- the offset of the RE mapping between adjacent time units is obtained by the network device from a positioning center.
- the method further includes: the network device sending the RE mapping offset between the adjacent time units to the adjacent cell network device.
- the neighboring cell network device can also obtain the offset of the RE mapping between adjacent time units.
- the interleaving information further includes the number of comb teeth and the time domain repetition factor.
- the interleaving information includes a time domain repetition factor and the number of comb teeth.
- the network device provides the time domain repetition factor and the number of comb teeth to the terminal device, so that the terminal device can calculate the resource element RE mapping offset between adjacent time units based on the time domain repetition factor and the number of comb teeth sent by the network device, thereby
- the interleaving pattern can be determined to facilitate interleaving transmission.
- the first information further includes SRS resource configuration information.
- the SRS resource configuration information includes the interleaving information.
- the interleaving information includes a positioning indication.
- the network device can multiplex the function parameters in the SRS resource indication set function to realize the interleaving indication function.
- a positioning function positioning
- the usage parameter is multiplexed to realize the interleaving indication function. That is to say, the parameter (usage) of the SRS resource indication collection function can be set as the positioning function to realize the interleaving indication.
- the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the interleaving information includes an interleaving indication, such as a newly added staggering parameter.
- the sending of the first information by the network device to the terminal device includes: the network device sending the first information to the terminal device through the first signaling.
- the first signaling may be PDCCH or MAC CE, so as to realize dynamic indication.
- the sending of the first information by the network device to the terminal device includes: the network device sending a radio resource control RRC message to the terminal device, where the RRC message includes the first information.
- a method for transmitting a sounding reference signal SRS including: a terminal device receives first indication information from a network device, where the first indication information is used to instruct the terminal device to use the same antenna port when having the same port number SRS signals are sent on different resources of the SRS; according to the first indication information, the same antenna port is used to send SRS signals on different resources with the same SRS port number, and the different resources belong to the same SRS resource set and can be in the same SRS resource set SRS signals are interleaved on different SRS resources with the same port number, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.
- the terminal device using the same antenna port to send SRS signals on different resources with the same SRS port number according to the first indication information includes: the terminal device according to the first indication information and the SRS resource Spatial relationship information, using the same antenna port to send SRS signals on different resources with the same port number, where the different resources belong to the same SRS resource set, and the different resources have the same spatial relationship information.
- the terminal device uses the same antenna or antenna set and has the same port number.
- SRS signals are sent on different resources.
- the terminal device uses the same antenna or antenna set, and uses the same antenna or antenna set for different resources with the same port number.
- the SRS signal can be sent on different SRS resources in the same SRS resource set in a staggered manner, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.
- the first indication information includes a positioning indication, or a common port indication, or a coherent combination indication.
- a method for transmitting a sounding reference signal SRS which includes: a network device sends first indication information to a terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port in the same port number.
- SRS signals are sent on different resources, and the different resources belong to the same SRS resource set; the network device receives the SRS sent by the terminal device using the same antenna port, and performs multi-symbol joint demodulation on the received SRS. Therefore, network equipment can perform multi-symbol joint demodulation or coherent demodulation for SRS signals that are interleaved on different SRS resources with the same port number in the same SRS resource set, thereby improving the accuracy of detecting SRS and helping Improve positioning accuracy.
- the method further includes: the network device sends a spatial relationship information configuration to the terminal device, and the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.
- the first indication information includes a positioning indication, or a common port indication, or a coherent combination indication.
- a communication device in a fifth aspect, includes a module for executing the method in the first aspect or any possible implementation of the first aspect, or for the third aspect or the third aspect. Any possible implementation of the method module.
- a communication device in a sixth aspect, includes a module for executing the method in the second aspect or any possible implementation of the second aspect, or for executing the fourth aspect or the fourth aspect.
- the module of the method in any possible implementation of the aspect.
- a communication device may be the terminal device in the above method design, or may be a chip set in the terminal device.
- the communication device includes a processor, coupled with a memory, and can be used to execute instructions in the memory to implement the method executed by the terminal device in the first aspect and any one of its possible implementation manners, or to implement the third Aspect and the method executed by the terminal device in any one of its possible implementations.
- the communication device further includes a memory.
- the communication device further includes a communication interface, and the processor is coupled with the communication interface.
- the communication interface may be a transceiver, or an input/output interface.
- the communication interface may be an input/output interface.
- the transceiver may be a transceiver circuit.
- the input/output interface may be an input/output circuit.
- a communication device may be a network device in the design of the above method, or a chip set in the network device.
- the communication device includes a processor, coupled with a memory, and can be used to execute instructions in the memory to implement the method executed by the network device in the second aspect and any one of its possible implementation manners, or to implement the fourth Aspect and the method executed by the network device in any one of its possible implementations.
- the communication device further includes a memory.
- the communication device further includes a communication interface, and the processor is coupled with the communication interface.
- the communication interface may be a transceiver or an input/output interface.
- the communication interface may be an input/output interface.
- the transceiver may be a transceiver circuit.
- the input/output interface may be an input/output circuit.
- a program is provided, when the program is executed by a processor, it is used to execute any method in the first aspect or the third aspect and possible implementation manners thereof.
- a program is provided, when the program is executed by a processor, it is used to execute any method in the second aspect or the fourth aspect and possible implementation manners thereof.
- a program product includes program code.
- the program code is run by a communication unit, a processing unit or a transceiver, or a processor of a communication device (for example, a terminal device),
- the communication device is caused to execute any method in the above-mentioned first aspect or third aspect and possible implementation manners thereof.
- a program product includes: program code, when the program code is run by a communication unit, a processing unit or a transceiver, or a processor of a communication device (for example, a network device), The communication device is caused to execute any method in the foregoing second aspect or fourth aspect and possible implementation manners thereof.
- a computer-readable storage medium stores a program that enables a communication device (for example, a terminal device) to execute the first aspect or the third aspect and its possibilities Any one of the implementations.
- a computer-readable storage medium stores a program, and the program enables a communication device (for example, a network device) to execute the second aspect or the fourth aspect and its possibilities Any one of the implementations.
- a communication system for transmitting a sounding reference signal SRS including: a terminal device and a network device, the terminal device is used to implement the first aspect or the third aspect and possible implementations thereof In any method of, the network device is used to execute any method in the above-mentioned second aspect or fourth aspect and possible implementation manners thereof.
- the communication system may further include other devices that interact or communicate with the terminal device and/or the network device.
- FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application
- Fig. 2 is a simulation result diagram of the related detection corresponding to the SRS sent by the prior art
- FIG. 3 is a schematic interaction diagram of a method for transmitting a sounding reference signal SRS according to an embodiment of the present application
- FIG. 4 is a schematic diagram of an example of applying a resource mapping pattern according to an embodiment of the present application.
- FIG. 5 is a schematic diagram of another example of applying the resource mapping pattern of the embodiment of the present application.
- FIG. 6 is a schematic diagram of another example of applying the resource mapping pattern of the embodiment of the present application.
- FIG. 7 is a schematic interaction diagram of a method for transmitting a sounding reference signal SRS according to another embodiment of the present application.
- FIG. 8 is a schematic diagram of an example of applying a resource mapping pattern according to another embodiment of the present application.
- FIG. 9 is a schematic diagram of a simulation result of transmitting a sounding reference signal SRS using an embodiment of the present application.
- FIG. 10 is a schematic block diagram of an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- FIG. 11 is a schematic structural diagram of an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- FIG. 12 is a schematic block diagram of another apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of another apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- multiple can be understood as “at least two”; “multiple” can be understood as “at least two”.
- GSM global system for mobile communications
- CDMA code division multiple access
- WCDMA broadband code division multiple access
- GPRS general packet radio service
- LTE long term evolution
- LTE frequency division duplex FDD
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application.
- the mobile communication system includes a core network device 110, a wireless access network device 120, and at least one terminal device (the terminal device 130 and the terminal device 140 in FIG. 1).
- the terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner.
- the core network device and the wireless access network device can be separate and different physical devices, or they can integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or it can be a physical device It integrates the functions of part of the core network equipment and part of the wireless access network equipment.
- the terminal device can be a fixed location or movable.
- Fig. 1 is only a schematic diagram.
- the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 1.
- the embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.
- Radio access network (RAN) equipment is the access equipment that terminal equipment accesses to the mobile communication system in a wireless manner. It can be a base station NodeB, an evolved NodeB (eNB), and a 5G mobile communication system.
- eNB evolved NodeB
- gNB next generation NodeB
- Wi-Fi wireless fidelity
- gNB next generation NodeB
- the embodiment of the present application does not limit the specific technology and specific device form adopted by the radio access network device.
- the gNB may include a centralized unit (CU) and a DU.
- the gNB may also include an active antenna unit (AAU).
- CU implements part of the functions of gNB
- DU implements part of the functions of gNB.
- the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
- RRC radio resource control
- PDCP packet data convergence protocol
- the DU is responsible for processing physical layer protocols and real-time services, and realizes the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer.
- RLC radio link control
- MAC media access control
- PHY physical
- the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
- a terminal device may also be called a terminal, a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and so on.
- the terminal equipment can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid, and wireless terminals in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc.
- Wireless access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
- the embodiments of the present application do not limit the application scenarios of wireless access network equipment and terminal equipment.
- the embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device-to-device (D2D) signal transmission.
- the sending device is a wireless access network device, and the corresponding receiving device is a terminal device.
- the sending device is a terminal device, and the corresponding receiving device is a wireless access network device.
- D2D signal transmission the sending device is a terminal device, and the corresponding receiving device is also a terminal device.
- the embodiment of the present application does not limit the signal transmission direction.
- Communication between wireless access network equipment and terminal equipment, as well as between terminal equipment and terminal equipment, can communicate through licensed spectrum, or communicate through unlicensed spectrum, or through licensed spectrum and free spectrum at the same time.
- Authorize spectrum for communication Communication between wireless access network equipment and terminal equipment, as well as between terminal equipment and terminal equipment, can communicate through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6G, and can also use below 6G at the same time
- the frequency spectrum and the frequency spectrum above 6G communicate.
- the embodiment of the present application does not limit the spectrum resource used between the radio access network device and the terminal device.
- the embodiments of this application are mainly applied to 5G NR systems.
- the embodiments of the present application can also be applied to other communication systems. As long as there is an entity in the communication system that needs to send transmission direction indication information, another entity needs to receive the indication information and determine the transmission direction within a certain period of time according to the indication information.
- FIG. 1 is only described as an example, and does not limit the protection scope of the embodiments of the present application.
- the technical solutions of the embodiments of the present application can also be used in other communication systems, as long as the communication system needs to indicate the transmission direction.
- 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 includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
- the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
- the application layer includes 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 provided according to the embodiments of the application.
- the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
- various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
- article of manufacture as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
- 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 (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
- various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
- 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.
- the time unit may include other time domain units such as frames, subframes, slots, mini-slots (or mini-slots), symbols and the like.
- a mini-slot is a time-domain unit whose time-domain length is less than a time slot.
- the time length of one frame is 10 milliseconds (ms), including 10 subframes, and the time length corresponding to each subframe is 1ms.
- One slot includes 12 symbols in the case of an extended cyclic prefix and 14 symbols in the case of a normal cyclic prefix.
- the time domain symbols here may be orthogonal frequency division multiplexing (OFDM) symbols.
- the number of time-domain symbols included in a mini-slot is less than 14, such as 2 or 4 or 7, and so on.
- one slot may include 7 time domain symbols, and the number of time domain symbols included in a mini-slot is less than 7, such as 2 or 4, and the specific value is not limited.
- the uplink time difference of arrival is a positioning method based on the uplink time difference of arrival.
- the terminal device sends a sounding reference signal (SRS)
- the network device receives the sounding reference signal (SRS)
- time difference of arrival TDOA
- the time difference of arrival TDOA
- the distance difference between the terminal device and the two network devices can be obtained, so that it can be determined that the terminal device is on a hyperbola with the positions of the two network devices as the focus.
- 2 hyperbolas can be drawn, and the intersection (one) of the two hyperbolas is the terminal position.
- the uplink angle of arrival is a positioning method based on the uplink angle.
- the terminal device sends an SRS; correspondingly, the network device receives the SRS and measures the SRS angle of arrival, so that it can be determined that the terminal device is on a ray determined by the direction of the angle of arrival. If two network devices are involved in positioning, two rays can be drawn, and the intersection of the two rays is the terminal position.
- Multi-cell (Multi-cell) round trip time is a positioning method based on RTT.
- the network device sends downlink signals and receives SRS, and the terminal sends SRS and receives downlink signals.
- the network device and the terminal respectively measure the difference between the sending and receiving time (Rx-Tx time difference), thereby determining the RTT, and further determining that the terminal is on a circle with a radius corresponding to half of the RTT and the network device as the center.
- the current SRS configuration only supports one SRS resource.
- one SRS resource includes at least the number of SRS ports, and the time domain and frequency domain positions corresponding to the SRS resource. If one SRS resource occupies multiple symbols in one time slot, the resource element (RE) positions mapped on each symbol on each port are the same. Regardless of whether frequency hopping is configured or not, in different resource blocks (resource block, RB) (where one RB includes 12 REs), the positions of REs occupied by SRS resources are the same on different symbols. However, the same mapping method of RE positions on different symbols is not conducive to positioning.
- FFT fast Fourier transform
- CP cyclic prefix
- the network device may identify the side peak as the main peak. This will cause the network equipment to use the SRS corresponding to the side peak to perform positioning, and calculate the corresponding relative arrival time, the difference in receiving and sending time, or the deviation of the arrival angle estimation, etc., which will cause positioning errors and other problems.
- the sliding correlation used by the network equipment can be implemented by the following formula:
- r(n) is the correlation output
- y(n) is the received sequence
- x(n) is the local sequence
- n is the sampling point number
- M is the correlation length, which depends on the sequence length of x(m), where , The value range of m is 0 to M-1
- the asterisk in the upper right of x * indicates conjugate.
- y(n) is the signal after x(n) passes through the multipath channel h n
- h n represents the channel response with a delay of n
- x(n) has ideal autocorrelation characteristics, namely
- the embodiments of the present application provide a method for transmitting SRS.
- a network device sends interleaving information to a terminal device, so that the terminal device transmits SRS signals transmitted on the same antenna port in different time units in a staggered manner in the frequency domain. Eliminate side peaks on the autocorrelation function, thereby improving the accuracy of positioning.
- the network device may send instruction information to the terminal device to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number, so as to eliminate side peaks on the autocorrelation function, thereby improving positioning accuracy.
- Interleaving means that the signals sent by the terminal device or the network device use different frequency domain resources on adjacent units, or the frequency domain resources of the units on the adjacent time domain are offset.
- Signals include but are not limited to SRS, and time domain units include symbols, mini-slots, time slots, subframes or radio frames, etc. If the time domain unit is a subframe or a radio frame, the signal may occupy part of the symbols in the subframe or radio frame. I won't repeat them below.
- FIG. 3 shows a schematic interaction diagram of a method 300 for transmitting a sounding reference signal SRS according to an embodiment of the present application. As shown in FIG. 3, the method 300 includes:
- the network device sends first information to the terminal device, where the first information includes interleaving information, and the interleaving information includes information for determining interleaving resources of SRS transmitted on the same antenna port in different time units.
- the terminal device receives the first information from the network device.
- the network device can instruct the terminal device to transmit the SRS signals transmitted on the same antenna port in different time units in a staggered manner in the frequency domain in an explicit or implicit manner.
- the network equipment can configure corresponding interleaving resources for the terminal equipment, so that the terminal equipment sends SRS signals on the interleaving resources, so as to achieve the purpose of interleaving transmission, or it can also send instructions to the terminal equipment to indicate that the terminal equipment is on the same
- the SRS signals transmitted by the antenna ports in different time units are transmitted in a staggered manner in the frequency domain.
- the network device may add a positioning function to the parameters of the existing SRS resource indication set function (the positioning function is used to indicate interleaved transmission), or it may be implemented through newly introduced parameters.
- the positioning function is used to indicate interleaved transmission
- the interleaving information includes: the offset of the RE mapping of adjacent time units.
- the resource interleaving on different time units can be determined by the offset of the RE mapping of adjacent time units. Assuming that one SRS resource is configured, it can be determined that the SRS implements frequency-domain interleaving on different time units through the offset of the RE mapping of adjacent time units. It should be understood that the embodiments of the present application do not limit the number of SRS resource configurations, and may be multiple SRS resources, and each SRS resource uses the same or different offsets of the RE mapping of adjacent time units.
- the interleaving information includes: the number of comb teeth and the time domain repetition factor. Through comb teeth and time domain repetition factor, the terminal device can determine the interleaving of frequency domain resources on multiple time units.
- the interleaving information includes: interleaving indication.
- the interleaving indication is used to instruct the terminal equipment to alternately send SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the terminal device can interleave the SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the first information includes SRS resource configuration information, which can be understood as being used to configure SRS resources.
- the network device can configure multiple SRS resource sets for the terminal device.
- the SRS resource configuration information may include one or more of the following information: port information (for example, the number of ports) corresponding to the SRS resource, cyclic shift information, information about the number of comb teeth, initial cyclic shift, The initial comb number and so on.
- port information for example, the number of ports
- cyclic shift information information about the number of comb teeth
- initial cyclic shift The initial comb number and so on.
- the SRS resource configuration information may or may not include interleaving information. If the SRS resource configuration information includes interleaving information, the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain. That is to say, the network device can directly instruct the terminal device to alternately transmit the SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the network device may reuse the function parameters in the SRS resource indication set function to realize the interleaving indication.
- the parameters (usage) of the SRS resource indication set function include functions: beam management, codebook, non-codebook, antenna switching, and positioning function (positioning) can be added to usage, or called positioning indication, that is, multiplexing
- the usage parameter realizes the interleaving indication function. That is to say, the parameter (usage) of the SRS resource indication collection function can be set as the positioning function to realize the interleaving indication.
- the first information includes SRS resource configuration information
- the SRS resource configuration information includes interleaving information. That is to say, when the network device sends the configured SRS resource configuration information to the terminal device, it can add interleaving information in the SRS resource configuration. In this way, the terminal device can determine the interleaving SRS resource mapping pattern based on the interleaving information.
- the interleaving information may include the offset of the RE mapping of adjacent time units.
- the terminal device may directly obtain the RE mapping offset of the adjacent time unit from the network device, so as to determine the SRS resource mapping pattern subsequently.
- the interleaving information may also include a time domain repetition factor and the number of comb teeth.
- the offset of the RE mapping of the adjacent time unit may be obtained by the network device from the positioning center.
- the positioning center may be a part of the devices or components of the positioning management function (such as a location management function (LMF) and a location management component (LMC).
- LMF location management function
- LMC location management component
- the network device may be a serving base station of the terminal device.
- the network device may also send the offset of the RE mapping of the adjacent time unit to the adjacent cell network device, so that the adjacent cell network device can obtain the offset of the RE mapping of the adjacent time unit. Shift.
- the network device may carry the number of comb teeth and the time domain repetition factor in the interleaving information.
- the terminal device combines the number of comb teeth, the time domain repetition factor, and the offset of the RE mapping of adjacent time units to obtain the SRS resource mapping pattern.
- the interleaving information includes a time domain repetition factor and the number of comb teeth.
- the terminal device may obtain the time domain repetition factor and the number of comb teeth from the network device, and then use the time domain repetition factor and the number of comb teeth to calculate the offset of the RE mapping of adjacent time units, so as to determine the SRS resource mapping pattern subsequently.
- the network device configures interleaving resources for the terminal device (such as the offset of the RE mapping of adjacent time units, or the time domain repetition factor and the number of comb teeth), the network device
- the interleaving information can also be used as an interleaving indicator. That is to say, in addition to configuring interleaving resources for the terminal device, the network device may further instruct the terminal device to send SRS signals interlacedly.
- the first information includes SRS resource configuration information and interleaving information.
- the interleaving information may be independent of SRS resource configuration information.
- the interleaving information includes an interleaving indication.
- new positioning parameters can be introduced in the radio resource control (Radio Resource Control, RRC) protocol.
- RRC Radio Resource Control
- a new parameter such as a staggering parameter, can be introduced into the SRS resource indication collection function to realize the staggering indication function. If the new parameter is configured as true (true) or on (on), the terminal device alternately transmits SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the first information may be sent through different messages.
- the network device sends the first information to the terminal device through an RRC message, that is, the RRC message includes the first information.
- the network device may send the SRS resource configuration information and the interleaving information to the terminal device through the RRC message.
- the network device may send the interleaving information used as the interleaving indicator to the terminal device through dynamic signaling, such as the first signaling.
- the first signaling may be physical layer downlink control channel (physical downlink control channel, PDCCH), medium access control layer control element (medium access control control element, MAC CE) and other signaling.
- the interleaving information can be understood as independent of the SRS resource configuration information.
- the network device can notify the terminal device to perform interleaving transmission through dynamic signaling, specifically: interleaving the transmission of SRS signals on the same antenna port in different time units in the frequency domain.
- a part of the interleaving information is sent through an RRC message, and another part of the interleaving information is sent through dynamic signaling.
- the basic configuration of interleaving information such as interleaving resources (such as the offset of the RE mapping of adjacent time units, or the time domain repetition factor and the number of comb teeth) is configured through RRC, and only the terminal is indicated in the dynamic signaling
- the device alternately sends SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the dynamic signaling may only include the interleaving indication.
- the terminal device determines an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes resource patterns in which SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.
- interleaving can be understood as “existing offset”.
- the interleaving resource pattern of the SRS signals transmitted on the same antenna port on different time units in the frequency domain can be understood as: REs corresponding to the SRS signals transmitted on the same antenna port on different time units are offset in the frequency domain.
- S320 includes: the terminal device according to the resource element RE mapping offset between adjacent time units , Determine the SRS resource mapping pattern.
- the network device may configure the SRS interleaving resource for the terminal device.
- the specific manifestation is that the SRS resource configuration includes the interleaving information, and the interleaving information includes the offset of the RE mapping of adjacent time units.
- the terminal device can determine the SRS resource mapping pattern, that is, the SRS interlaced resource, according to the offset of the RE mapping of the adjacent time unit, so as to send the SRS signal on the SRS interlaced resource.
- S320 includes: the terminal device calculates the RE mapping offset between adjacent time units according to the time domain repetition factor and the number of comb teeth; The terminal device determines the SRS resource mapping pattern according to the offset of the RE mapping between the adjacent time units.
- the network device may send the interleaving information including the time domain repetition factor and the number of comb teeth to the terminal device, instead of directly sending the offset of the RE mapping between adjacent time units.
- the terminal device uses the time domain repetition factor and the number of comb teeth to calculate the offset of the RE mapping between adjacent time units.
- the offset of the RE mapping between adjacent time units is: a value obtained by rounding up the ratio of the number of comb teeth to the time domain repetition factor.
- the terminal device can determine the SRS resource mapping pattern after obtaining the offset of the RE mapping between adjacent time units.
- the terminal device may use the following formula to determine the resource mapping of each port in the SRS resource:
- Is the initial cyclic shift in the SRS resource configuration, The total number of cyclic shifts configured for SRS resources, Is the number of ports in the SRS resource configuration, p i 1000+i, p i is the port number of the SRS resource, i represents the port index, Is the sending comb number occupied by port p i (on symbol l′), The sending comb number configured for the SRS resource, K TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource. Among them, O is calculated by the following formula:
- a 4-symbol single-port SRS resource mapping is taken as an example, and the description will be made in conjunction with the resource mapping patterns in FIGS. 4-6. Here is a unified description.
- a 4-symbol single-port SRS resource is mapped to symbol 10, symbol 11, symbol 12, and symbol 13 in a time slot.
- the time domain repetition factor is 2, which means that the SRS interleaving resources are mapped on two symbols, and the symbol 10 and the symbol 11 occupy the same RB.
- symbol 12 and symbol 13 can be mapped to and through frequency hopping.
- Symbol 10 is different from symbol 11 on the RB.
- the time domain repetition factor is 2, which means that the SRS interleaving resources are mapped on two symbols, and the symbol 10 and the symbol 11 occupy the same RB.
- the mapping positions of symbol 12 and symbol 13 are consistent with symbol 10 and symbol 11 in one RB, but this does not constitute a limitation to the embodiment of the present application. In fact, symbol 12 and symbol 13 can be mapped to AND symbol through frequency hopping. 10 is on the RB different from the symbol 11.
- the time domain repetition factor is 4, which means that the SRS interlaced resources are mapped on four symbols, and the symbol 10, the symbol 11, the symbol 12, and the symbol 13 occupy the same RB.
- the terminal device sends an SRS according to the SRS resource mapping pattern.
- the terminal device may, based on the SRS resource mapping pattern determined in the foregoing, alternately transmit the SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the terminal device can staggerly transmit the same antenna in the frequency domain based on the staggering indication SRS signals transmitted by the port in different time units.
- the terminal device can staggerly transmit the same antenna port in the frequency domain based on the positioning function. SRS signal transmitted on time unit.
- the SRS sent by the terminal device may be sent to the serving base station, or may be sent to the neighboring base station, which is not limited.
- the terminal device can determine the mapping offset of SRS resources in different time units, and can realize that the resources corresponding to the SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.
- the pattern configuration If the SRS resource interleaving mapping pattern is used to transmit the SRS, the side peaks on the autocorrelation function can be eliminated, which helps to improve the accuracy of the relative arrival time, the transmission and reception time difference measurement and the angle of arrival based on SRS measurement.
- This application also provides another embodiment, which configures interleaving patterns corresponding to multiple SRS resources included in the same SRS resource set, and transmits SRS signals on different resources with the same port number by using the same antenna port, so as to achieve the elimination of autonomy.
- the purpose of the side peak on the correlation function helps to improve the accuracy of the relative arrival time based on the SRS measurement, the transmission and reception time difference measurement, and the angle of arrival.
- FIG. 7 shows a schematic interaction diagram of a method 700 for transmitting a sounding reference signal SRS according to another embodiment of the present application. As shown in FIG. 7, the method 700 includes:
- the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number.
- the terminal device receives the first indication information.
- the first indication information may specifically be a positioning (position) indication, or a common port (sameport) indication, or a coherent combining indication (coherent combining).
- a positioning indication a new positioning function can be added to the existing parameter usage, that is, the usage parameter is reused to realize the interleaving indication function.
- a common port (sameport) indication or a coherent combining indication (coherent combining) is a newly introduced parameter.
- the network device may send SRS resource configuration information to the terminal device.
- the SRS resource configuration information includes one or more SRS resource sets, and each SRS resource set includes multiple SRS resources.
- the network device sends SRS resource configuration information to the terminal device, it can add first indication information to the SRS resource configuration information to indicate whether the SRS signals on different SRS resources with the same port number in the same SRS resource set use the same The antenna port is sent.
- the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number, and the different resources belong to the same SRS resource set.
- the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number; if the sameport indication or coherent combining indication is configured as true (true) or on (on), the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number. Therefore, after receiving the first indication information, the terminal device can alternately send SRS signals on different SRS resources with the same port number in the same SRS resource set, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.
- an SRS resource set includes two SRS resources, SRS resource 1 and SRS resource 2, respectively.
- SRS resource 1 is a 2-port (port 1000 and port 1001, respectively) resource, which is mapped on symbol 10 and symbol 11 in a time slot.
- the comb structure is 4-comb, in which port 1000 and port 1001 both occupy the comb Tooth 0, which occupies the same RE, is distinguished by sequence cyclic shift.
- SRS resource 2 is a 2-port (port 1000 and port 1001 respectively) resource, which is mapped on symbol 12 and symbol 13 in a time slot.
- the comb structure is 4-comb, of which port 1000 and port 1001 Both occupy comb tooth 2, that is, occupy the same RE, and are distinguished by sequence cyclic shift.
- the terminal device uses the same antenna or antenna assembly to send the SRS signal on the port 1000 of the SRS resource 1 and the port 1000 of the SRS resource 2. Similarly, the terminal device uses the same antenna or antenna set to transmit the SRS signal on the port 1001 of the SRS resource 1 and the port 1001 of the SRS resource 2.
- the terminal device may also combine the spatial relationship information to determine whether to use the same antenna port to send SRS signals on different resources with the same port number.
- the method 700 further includes:
- the network device sends a spatial relationship information configuration to the terminal device, and the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.
- the terminal device uses the same antenna port to transmit signals on different resources with the same port number according to the configuration of the first indication information and the spatial relationship information, wherein the different resources belong to the same SRS resource set, and The different resources have the same spatial relationship information.
- the spatial relationship information may be a downlink signal
- the terminal equipment may use the beam receiving the downlink signal to transmit the SRS.
- the downlink signal may be a synchronization signal physical layer broadcast signal block (synchronization signal/physical broadcast channel block, SS/PBCH block) (also called SSB) or a channel state information reference signal (channel state information reference signal, CSI) -RS).
- SS/PBCH block synchronization signal/physical broadcast channel block
- CSI channel state information reference signal
- the spatial relationship information may also be an SRS (such as the first SRS), and correspondingly, the terminal device may use the same beam as the transmission beam corresponding to the first SRS to transmit the SRS.
- SRS such as the first SRS
- the terminal device uses the same antenna or antenna set and has the same SRS signals are sent on different resources of the port number.
- the terminal device uses the same antenna or antenna set, and uses the same antenna or antenna set for different resources with the same port number. SRS signal is sent on.
- the network device After the network device sends the first indication information to the terminal device, it can be considered that the terminal device uses the same antenna or antenna set to send SRS signals on different resources with the same port number.
- the network device performs multi-symbol joint demodulation on the SRS signal received on the same port number.
- multi-symbol joint demodulation can also be called coherent demodulation.
- the network device may be a serving base station. It should be understood that the "symbol" in the multi-symbol joint demodulation can also be replaced with other time units, that is, the multi-time unit joint demodulation, which is not limited.
- the neighboring cell base station receives the SRS signal that the terminal device uses the same antenna or antenna set and transmits on different resources with the same port number, it can also perform multi-symbol joint demodulation.
- FIG. 9 shows a schematic diagram of a simulation result of transmitting a sounding reference signal SRS using an embodiment of the present application.
- the method for transmitting SRS signals in the embodiments of the present application can significantly reduce false peaks, thereby obtaining more reliable SRS detection.
- Applying the obtained SRS to the three positioning methods mentioned above can improve the accuracy of RTOA, the estimation accuracy of the time difference between sending and receiving, and the estimation accuracy of AoA.
- the size of the sequence number of the above-mentioned processes does not mean the order of execution.
- the execution order of each process should be determined by its function and internal logic, and should not be implemented in this application.
- the implementation process of the example constitutes any limitation.
- the method for transmitting a sounding reference signal SRS according to an embodiment of the present application is described in detail above in conjunction with FIG. 1 to FIG. 9.
- the device for transmitting the sounding reference signal SRS according to the embodiment of the present application will be described below in conjunction with FIG. 10 to FIG. 13. It should be understood that the technical features described in the method embodiments are also applicable to the following device embodiments.
- FIG. 10 shows a schematic block diagram of an apparatus 1000 for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- the apparatus 1000 is configured to execute the method executed by the terminal device in the foregoing method embodiment.
- the specific form of the apparatus 1000 may be a terminal device or a chip in a terminal device.
- the embodiments of this application do not limit this.
- the device 1000 includes:
- the transceiver module 1010 is configured to receive first information from a network device, where the first information includes interleaving information, and the interleaving information is information used to determine interleaving resources of SRS transmitted on the same antenna port in different time units;
- the processing module 1020 is configured to determine an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain ;
- the transceiver module 1010 is further configured to send SRS according to the SRS resource mapping pattern.
- the interleaving information includes the offset of resource element RE mapping between adjacent time units; the processing module 1020 is configured to determine the SRS resource mapping pattern according to the first information, specifically It includes: determining the SRS resource mapping pattern according to the resource element RE mapping offset between the adjacent time units.
- the interleaving information further includes the number of comb teeth and the time domain repetition factor.
- the interleaving information includes a time domain repetition factor and the number of comb teeth; wherein, the processing module 1020 is configured to determine an SRS resource mapping pattern according to the first information, which specifically includes: The time domain repetition factor and the number of comb teeth are used to calculate the offset of RE mapping between adjacent time units; and the SRS resource mapping pattern is determined according to the offset of RE mapping between adjacent time units.
- the first information further includes SRS resource configuration information.
- the SRS resource configuration information includes the interleaving information.
- the processing module 1020 is configured to determine the SRS resource mapping pattern according to the RE mapping offset between adjacent time units, which specifically includes:
- Is the initial cyclic shift in the SRS resource configuration, The total number of cyclic shifts configured for SRS resources, Is the number of ports in the SRS resource configuration, p i 1000+i, p i is the port number of the SRS resource, i represents the port index, Is the transmit comb number occupied by port p i on symbol l′,
- the sending comb number configured for the SRS resource K TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource.
- the O is calculated by the following formula:
- the O is sent by the network device to the terminal device.
- the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the interleaving information includes an interleaving indication.
- the interleaving information includes a positioning indication.
- the transceiving module 1010 is configured to receive first information from a network device, which specifically includes: receiving first signaling from the network device, where the first signaling includes the first information .
- the transceiver module 1010 is configured to receive first information from a network device, including: receiving a radio resource control RRC message from the network device, where the RRC message includes the first information .
- the apparatus 1000 for transmitting sounding reference signal SRS may correspond to the method of the terminal device in the foregoing method embodiment, for example, the method in FIG. 3, and the foregoing and other management of each module in the apparatus 1000
- the operations and/or functions are respectively to implement the corresponding steps of the terminal device method in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not repeated here.
- the device 1000 is further configured to execute another embodiment of the present application, which specifically includes:
- the transceiver module 1010 is configured to receive first indication information from a network device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number;
- the transceiver module 1010 is further configured to use the same antenna port to transmit SRS signals on different resources with the same SRS port number according to the first indication information, and the different resources belong to the same SRS resource set.
- the transceiver module 1010 is further configured to receive the spatial relationship information configuration sent by the network device, where the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.
- the transceiver module 1010 is configured to use the same antenna port to send SRS signals on different resources with the same SRS port number according to the first indication information, which specifically includes:
- the same antenna port is used to transmit signals on different resources with the same port number, where the different resources belong to the same SRS resource set, and the different resources have The same spatial relationship information.
- the first indication information includes a positioning indication, or a common port indication, or a coherent combination indication.
- the apparatus 1000 for transmitting sounding reference signal SRS may correspond to the method of the terminal device in the foregoing method embodiment, for example, the method in FIG. 7, and the foregoing and other management of each module in the apparatus 1000
- the operations and/or functions are respectively to implement the corresponding steps of the terminal device method in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not repeated here.
- each module in the device 1000 can be implemented in the form of software and/or hardware, which is not specifically limited.
- the device 1000 is presented in the form of functional modules.
- the "module” here can refer to application specific integrated circuits (ASICs), circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the above functions Device.
- ASICs application specific integrated circuits
- the device 1000 may adopt the form shown in FIG. 11.
- the processing module 1020 may be implemented by the processor 1101 shown in FIG. 11.
- the transceiver module 1010 may be implemented by the transceiver 1103 shown in FIG. 11.
- the processor is implemented by executing a computer program stored in the memory.
- the function and/or implementation process of the transceiver module 1010 may also be implemented through pins or circuits.
- the memory is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the computer device, as shown in FIG. 11 1102.
- the foregoing transceiver module 1010 may be a transceiver, and the transceiver (indicated by the transceiver module 1010 in FIG. 10) forms a communication interface in the communication unit.
- the communication interface may be a software or hardware interface.
- the communication interface may be a communication interface including wireless transmission and reception, or an interface for a digital signal input after processing the received wireless signal by other processing circuits, or a software or hardware interface for communicating with other modules.
- FIG. 11 shows a schematic structural diagram of an apparatus 1100 for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- the apparatus 1100 includes a processor 1101, and the processor 1101 is configured to control and manage the actions of the terminal device.
- the processor 1101 is configured to call an interface to perform the following actions: receive first information from a network device, the first information includes interleaving information, and the interleaving information is used to determine the same antenna Information about the interleaved resources of the SRS transmitted by the port in different time units; the processor 1101 is further configured to determine an SRS resource mapping pattern according to the first information, wherein the SRS resource mapping pattern includes the same antenna port in different The resource corresponding to the SRS signal transmitted in the time unit is staggered in the frequency domain; the processor 1101 is configured to call an interface to perform the following actions: send the SRS according to the SRS resource mapping pattern.
- the processor 1101 may call an interface to perform the above-mentioned transceiving action, where the called interface may be a logical interface or a physical interface, which is not limited.
- the physical interface can be implemented by a transceiver.
- the device 1100 further includes a transceiver 1103.
- the device 1100 further includes a memory 1102, and the memory 1102 can store the program codes in the foregoing method embodiments, so that the processor 1101 can call them.
- the memory 1102 may be coupled with the processor 1101 or not.
- the device 1100 includes the processor 1101, the memory 1102, and the transceiver 1103, the processor 1101, the memory 1102, and the transceiver 1103 communicate with each other through internal connection paths, and transfer control and/or data signals.
- the processor 1101, the memory 1102, and the transceiver 1103 may be implemented by chips.
- the processor 1101, the memory 1102, and the transceiver 1103 may be implemented on the same chip or may be implemented on different chips. Or any combination of two functions can be implemented in one chip.
- the memory 1102 may store program codes, and the processor 1101 calls the program codes stored in the memory 1102 to implement corresponding functions of the apparatus 1100. It should be understood that the apparatus 1100 may also be used to perform other steps and/or operations on the terminal device side in the foregoing embodiment, and for the sake of brevity, details are not described herein.
- apparatus 1100 may also be used to perform other steps and/or operations on the terminal device side in the foregoing embodiment, and for the sake of brevity, details are not described herein.
- FIG. 12 shows a schematic block diagram of an apparatus 1200 for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- the apparatus 1200 is used to execute the method executed by the network device in the foregoing method embodiment.
- the specific form of the apparatus 1200 may be a network device or a chip in a network device.
- the embodiments of this application do not limit this.
- the device 1200 includes:
- the processing module 1210 is configured to determine interleaving information, where the interleaving information is used to determine information about interleaving resources of SRS transmitted on the same antenna port in different time units;
- the transceiver module 1220 is configured to send first information to a terminal device, where the first information includes the interleaving information, and the first information is used by the terminal device to determine an SRS resource mapping pattern, wherein the SRS resource mapping pattern It includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.
- the interleaving information includes the offset of the resource element RE mapping between adjacent time units.
- the interleaving information includes a time domain repetition factor and the number of comb teeth.
- the first information further includes SRS resource configuration information.
- the SRS resource configuration information includes the interleaving information.
- the interleaving information further includes the number of comb teeth and the time domain repetition factor.
- the offset of the RE mapping between adjacent time units is obtained by the device from a positioning center.
- the transceiving module 1220 is further configured to send the offset of the RE mapping between the adjacent time units to the neighboring cell network device.
- the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
- the transceiver module 1220 is configured to send the first information to the terminal device, which specifically includes: sending the first information to the terminal device through first signaling.
- the transceiver module 1220 is configured to send the first information to the terminal device, which specifically includes: sending a radio resource control RRC message to the terminal device, where the RRC message includes the first information.
- the apparatus 1200 for transmitting the sounding reference signal SRS may correspond to the method of the network device in the foregoing method embodiment, for example, the method in the method in FIG. 3, and the foregoing description of each module in the apparatus 1200
- the other management operations and/or functions are used to implement the corresponding steps of the network device method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the apparatus 1200 may also execute another embodiment of the present application, which specifically includes:
- the transceiver module 1220 is configured to send first indication information to a terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number, and the different resources belong to the same SRS Resource collection
- the transceiver module 1220 is further configured to receive the SRS sent by the terminal device using the same antenna port, and perform multi-symbol joint demodulation on the received SRS.
- the transceiver module 1220 is further configured to send a spatial relationship information configuration to the terminal device, where the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.
- the first indication information is a positioning indication, or a common port indication, or a coherent combination indication.
- the apparatus 1200 for transmitting sounding reference signal SRS may correspond to the method of the network device in the foregoing method embodiment, for example, the method in FIG. 7, and the foregoing and other management of each module in the apparatus 1200
- the operations and/or functions are to implement the corresponding steps of the method of the network device in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not described here.
- each module in the device 1200 can be implemented in the form of software and/or hardware, which is not specifically limited.
- the apparatus 1200 is presented in the form of functional modules.
- the "module” here may refer to application-specific integrated circuits ASIC, circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the above-mentioned functions.
- the apparatus 1200 may adopt the form shown in FIG. 13.
- the processing module 1210 may be implemented by the processor 1301 shown in FIG. 13.
- the transceiver module 1220 may be implemented by the transceiver 1303 shown in FIG. 13.
- the processor is implemented by executing a computer program stored in the memory.
- the function and/or implementation process of the transceiver module 1220 may also be implemented through pins or circuits.
- the memory is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the computer device, such as the memory shown in FIG. 13 1302.
- the foregoing transceiver module 1220 may be a transceiver, and the transceiver (indicated by the transceiver module 1220 in FIG. 12) forms a communication interface in the communication unit.
- the communication interface may be a software or hardware interface.
- the communication interface may be a communication interface including wireless transmission and reception, or an interface for a digital signal input after processing the received wireless signal by other processing circuits, or a software or hardware interface for communicating with other modules.
- FIG. 13 shows a schematic structural diagram of an apparatus 1300 for transmitting a sounding reference signal SRS according to an embodiment of the present application.
- the apparatus 1300 includes a processor 1301, and the processor 1301 is configured to control and manage the actions of the network device.
- the processor 1301 is used to determine interleaving information, and the interleaving information is used to determine information about the interleaving resources of the SRS transmitted on the same antenna port in different time units; the processor 1301 also It is used to invoke the interface to perform the following receiving and sending actions: sending first information to the terminal device, the first information includes the interleaving information, and the first information is used by the terminal device to determine the SRS resource mapping pattern, wherein the SRS The resource mapping pattern includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.
- the processor 1301 is configured to call the interface to perform the following transceiving actions: send first instruction information to the terminal device, and the first instruction information is used to instruct the terminal device to use the same antenna port when the SRS signals are sent on different resources with the same port number, and the different resources belong to the same SRS resource set; receiving the SRS sent by the terminal device using the same antenna port, and performing multi-symbol joint demodulation on the received SRS.
- the processor 1301 may call an interface to perform the above-mentioned transceiving actions, where the called interface may be a logical interface or a physical interface, which is not limited.
- the physical interface can be implemented by a transceiver.
- the device 1300 further includes a transceiver 1303.
- the device 1300 further includes a memory 1302, and the memory 1302 may store the program code in the foregoing method embodiment, so that the processor 1301 can call it.
- the memory 1302 may be coupled with the processor 1301 or not.
- the device 1300 includes the processor 1301, the memory 1302, and the transceiver 1303, the processor 1301, the memory 1302, and the transceiver 1303 communicate with each other through internal connection paths, and transfer control and/or data signals.
- the processor 1301, the memory 1302, and the transceiver 1303 may be implemented by chips.
- the processor 1301, the memory 1302, and the transceiver 1303 may be implemented on the same chip or may be implemented on different chips. Or any combination of two functions can be implemented in one chip.
- the memory 1302 may store program codes, and the processor 1301 calls the program codes stored in the memory 1302 to implement corresponding functions of the apparatus 1300. It should be understood that the apparatus 1300 may also be used to perform other steps and/or operations on the network device side in the foregoing embodiment, and for the sake of brevity, details are not described here.
- apparatus 1300 may also be used to perform other steps and/or operations on the network device side in the foregoing embodiment, and for the sake of brevity, details are not described here.
- the methods disclosed in the above embodiments of the present application may be applied to a processor or implemented by a processor.
- the processor may be an integrated circuit chip with signal processing capabilities.
- the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
- the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit ASIC, a ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or Transistor logic devices, discrete hardware components, can also be system on chip (SoC), can also be central processor unit (CPU), can also be network processor (NP), or It is a digital signal processing circuit (digital signal processor, DSP), it can also be a microcontroller (microcontroller unit, MCU), it can also be a programmable logic device (PLD) or other integrated chips.
- SoC system on chip
- CPU central processor unit
- NP network processor
- DSP digital signal processing circuit
- MCU microcontroller unit
- PLD programmable logic device
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
- the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
- the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
- the memory in the embodiments of the present application may be volatile memory or 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 electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
- the volatile memory may be random access memory (RAM), which is used as an external cache.
- RAM random access memory
- static random access memory static random access memory
- dynamic RAM dynamic random access memory
- DRAM dynamic random access memory
- SDRAM synchronous dynamic random access memory
- double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
- enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
- serial link DRAM SLDRAM
- direct rambus RAM direct rambus RAM
- the item can be any of the following: A; B ; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A , C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C.
- the item can be any of the following: A; B ; C; A and B; A and C; B and C; A, B and C; A and A; A and B; A, A and C, A, B and B; A , C and C; B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C.
- the item includes at least one of the following: A, B,..., and X"
- the applicable items of the item can also be obtained according to the aforementioned rules.
- the disclosed system, device, and method may be implemented in other ways.
- the device embodiments described above are only illustrative.
- 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 can 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.
- each unit in each embodiment of the present application may be integrated into one processing 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 technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions 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 method described in each embodiment of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read only memory ROM, random access memory RAM, magnetic disk or optical disk and other media that can store program codes.
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Abstract
本申请提供了一种传输探测参考信号SRS的方法和装置。终端设备通过接收来自网络设备的第一信息,第一信息包括交错信息,并基于第一信息在频域上交错发送同一天线端口在不同时间单元上传输的SRS,能够解决现有技术中同一天线端口在不同时间单元上占用相同的资源元素RE时带来的旁峰误识别为主峰的问题,能够提高检测SRS的准确性,有助于提升定位精度。
Description
本申请要求于2019年04月29日提交中国专利局、申请号为201910354483.8、申请名称为“传输探测参考信号SRS的方法和装置”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。
本申请涉及通信领域,更具体地,涉及一种传输探测参考信号SRS的方法和装置。
长期演进(long term evolution,LTE)标准化了基于上行到达时间差(uplink time difference of arrival,UTDOA)的定位方法,第五代移动通信(5th generation mobile networks or 5th generation wireless systems,5G)新空口(new radio,NR)中也明确需要标准化UTDOA、上行到达角(uplink angle of arrival,UAoA)和多小区(Multi-cell)往返时间(round trip time,RTT)这三种定位方法。
这三种定位方法都需要终端设备发送探测参考信号(sounding reference signal,SRS),网络设备对终端设备发送的SRS进行测量。由于终端设备和网络设备可能存在不同步,网络设备需要在接收SRS时搜索SRS在时域上的位置。这样的搜索过程可以通过时域相关操作完成。例如,网络设备预先生成SRS的序列,用该序列在接收信号中滑动相关,并捕获相关峰。一般而言,如果网络设备获取了相关峰,即检测到了SRS,进而可以基于SRS测量诸如,相对到达时间(Relative time of arrival,RTOA),到达角(angle of arrival,AOA),收发时间差(Rx–Tx time difference)。
目前NR的SRS配置方法在相关峰检测过程中出现多个局部峰值,而其他旁峰为虚警。基站在滑动相关接收SRS时,很容易把旁峰识别为主峰,从而影响相关峰的检测,进而影响网络设备检测SRS的准确性,不利于定位精度的提升。
发明内容
有鉴于此,本申请提供一种传输探测参考信号SRS的方法和装置,能够提高检测SRS的准确性,有助于提升定位精度。
第一方面,提供了一种传输探测参考信号SRS的方法,包括:终端设备接收来自网络设备的第一信息,所述第一信息包括交错信息,所述交错信息是用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;根据所述第一信息,确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样;根据所述SRS资源映射图样发送SRS,能够交错发送同一天线端口在不同时间单元上的SRS信号,从而提高检测SRS的准确性,有助于提升定位精度。
在一种可能的实现方式中,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量;所述终端设备根据所述第一信息,确定SRS资源映射图样,包括:所述终端设备根据所述相邻时间单元间的资源元素RE映射的偏移量,确定所述SRS资源映射图样。这里,终端设备可以基于网络设备发送的相邻时间单元间的资源元素RE映射的偏移量,确定交错图样,以便于实现交错发送。
可选地,所述交错信息中还包括梳齿数和时域重复因子。
在另一种可能的实现方式中,所述交错信息包括时域重复因子和梳齿数;其中,所述终端设备根据所述第一信息,确定SRS资源映射图样,包括:所述终端设备根据所述时域重复因子和所述梳齿数,计算相邻时间单元间的RE映射的偏移量;所述终端设备根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样。这里,终端设备可以基于网络设备发送的时域重复因子和梳齿数计算相邻时间单元间的资源元素RE映射的偏移量,从而可以确定交错图样,以便于实现交错发送。
在又一种可能的实现方式中,所述第一信息还包括SRS资源配置信息。
可选地,所述SRS资源配置信息中包括所述交错信息。可选地,所述交错信息包括定位指示。这里,网络设备可以复用SRS资源指示集合功能中的功能参数,来实现交错指示功能。具体而言,可以对SRS资源指示集合功能的usage新增定位功能(positioning),或称作定位指示,即复用usage参数实现交错指示功能。也就是说,可以将SRS资源指示集合功能的参数(usage)设置为定位(positioning)功能,以实现交错指示。
可选地,所述终端设备根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样,包括:
所述终端设备根据以下公式确定SRS资源映射图样:
其中,
为SRS资源配置中的初始循环移位,
为SRS资源配置的循环移位总数,
为SRS资源配置中的端口数,p
i=1000+i,p
i为SRS资源的端口号,i表示端口索引,
为端口p
i在符号l′上占用的发送梳齿号,
为SRS资源配置的发送梳齿号,K
TC为梳齿数,O为相邻符号间RE映射的偏移量,l′为SRS符号相对索引,R为SRS资源配置的时域重复因子。
可选地,所述O通过下式计算:
或者,所述O是网络设备发送给终端设备的。
可选地,上述各种可能的实现方式中,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
可选地,所述交错信息包括交错指示,比如新增的交错(staggering)参数。
可选地,所述终端设备接收来自网络设备的第一信息,包括:所述终端设备接收来自网络设备的第一信令,所述第一信令包括所述第一信息。例如,所述第一信令可以是 PDCCH,或者MAC CE,从而可以实现动态指示。
可选地,所述终端设备接收来自网络设备的第一信息,包括:
所述终端设备接收来自所述网络设备的无线资源控制RRC消息,所述RRC消息包括所述第一信息。
第二方面,提供了一种传输探测参考信号SRS的方法,包括:网络设备确定交错信息,所述交错信息用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;向终端设备发送第一信息,所述第一信息包括所述交错信息,所述第一信息用于所述终端设备确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样,以使得终端设备能够交错发送同一天线端口在不同时间单元上的SRS信号,从而提高检测SRS的准确性,有助于提升定位精度。
在一种可能的实现方式中,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量。这里,网络设备向终端设备提供相邻时间单元间的资源元素RE映射的偏移量,以便于终端设备可以基于网络设备发送的相邻时间单元间的资源元素RE映射的偏移量,确定交错图样,以便于实现交错发送。
可选地,所述相邻时间单元间的RE映射的偏移量是所述网络设备从定位中心获取的。
可选地,所述方法还包括:所述网络设备将所述相邻时间单元间的RE映射的偏移量发送给邻区网络设备。这样使得邻区网络设备也可以获取所述相邻时间单元间的RE映射的偏移量。
可选地,所述交错信息中还包括梳齿数和时域重复因子。
在另一种可能的实现方式中,所述交错信息包括时域重复因子和梳齿数。这里,网络设备向终端设备提供时域重复因子和梳齿数,以使得终端设备可以基于网络设备发送的时域重复因子和梳齿数计算相邻时间单元间的资源元素RE映射的偏移量,从而可以确定交错图样,以便于实现交错发送。
在又一种可能的实现方式中,所述第一信息还包括SRS资源配置信息。
可选地,所述SRS资源配置信息中包括所述交错信息。可选地,所述交错信息包括定位指示。这里,网络设备可以复用SRS资源指示集合功能中的功能参数,来实现交错指示功能。具体而言,可以对SRS资源指示集合功能的usage新增定位功能(positioning),或称作定位指示,即复用usage参数实现交错指示功能。也就是说,可以将SRS资源指示集合功能的参数(usage)设置为定位(positioning)功能,以实现交错指示。
可选地,上述各种可能的实现方式中,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
可选地,所述交错信息包括交错指示,比如新增的交错(staggering)参数。
可选地,所述网络设备向终端设备发送第一信息,包括:所述网络设备通过第一信令向所述终端设备发送所述第一信息。例如,所述第一信令可以是PDCCH,或者MAC CE,从而可以实现动态指示。
可选地,所述网络设备向终端设备发送第一信息,包括:所述网络设备向所述终端设备发送无线资源控制RRC消息,所述RRC消息包括所述第一信息。
第三方面,提供了一种传输探测参考信号SRS的方法,包括:终端设备接收来自网 络设备的第一指示信息,所述第一指示信息用于指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号;根据所述第一指示信息,使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号,所述不同资源属于同一SRS资源集合,能够在同一SRS资源集合内具有相同端口号的不同SRS资源上交错发送SRS信号,从而提高检测SRS的准确性,有助于提升定位精度。
可选地,所述终端设备根据所述第一指示信息,使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号,包括:所述终端设备根据所述第一指示信息以及SRS资源的空间关系信息,使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,其中,所述不同资源属于同一SRS资源集合中,且所述不同资源具有相同的空间关系信息。
这里,如果终端设备收到了第一指示信息,且同一SRS资源集合中的每个SRS资源的空间关系信息均配置成相同的内容,则终端设备使用相同的天线或天线集合,在具有相同端口号的不同资源上发送SRS信号。或者,如果终端设备收到了第一指示信息,且同一SRS资源集合中的每个SRS资源的空间关系信息均未配置,则终端设备使用相同的天线或天线集合,在具有相同端口号的不同资源上发送SRS信号,能够在同一SRS资源集合内的不同SRS资源上交错发送SRS,从而提高检测SRS的准确性,有助于提升定位精度。
可选地,所述第一指示信息包括定位指示,或共端口指示,或相干合并指示。
第四方面,提供了一种传输探测参考信号SRS的方法,包括:网络设备向终端设备发送第一指示信息,所述第一指示信息用于指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,所述不同资源属于同一SRS资源集合;所述网络设备接收所述终端设备使用相同的天线端口发送的SRS,并对接收到的SRS进行多符号联合解调。因此,网络设备可以对终端设备在同一SRS资源集合内具有相同端口号的不同SRS资源上交错发送的SRS信号作多符号联合解调或相干解调,从而提高检测SRS的准确性,有助于提升定位精度。
可选地,所述方法还包括:所述网络设备向所述终端设备发送空间关系信息配置,所述空间关系信息配置中包括为不同SRS资源配置的相同的空间关系信息。
可选地,所述第一指示信息包括定位指示,或共端口指示,或相干合并指示。
第五方面,提供了一种通信装置,该通信装置包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的模块,或者,用于上述第三方面或第三方面的任意可能的实现方式中的方法的模块。
第六方面,提供了一种通信装置,该通信装置包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的模块,或者,用于执行上述第四方面或第四方面的任意可能的实现方式中的方法的模块。
第七方面,提供一种通信装置,该通信装置可以为上述方法设计中的终端设备,或者,为设置在终端设备中的芯片。该通信装置包括:处理器,与存储器耦合,可用于执行存储器中的指令,以实现上述第一方面及其任意一种可能的实现方式中终端设备所执行的方法,或者,以实现上述第三方面及其任意一种可能的实现方式中终端设备所执行的方法。可选地,该通信装置还包括存储器。可选地,该通信装置还包括通信接口,处理器与通信接口 耦合。
当该通信装置为终端设备时,该通信接口可以是收发器,或,输入/输出接口。
当该通信装置为设置于终端设备中的芯片时,该通信接口可以是输入/输出接口。
可选地,该收发器可以为收发电路。可选地,该输入/输出接口可以为输入/输出电路。
第八方面,提供一种通信装置,该通信装置可以为上述方法设计中的网络设备,或者,为设置在网络设备中的芯片。该通信装置包括:处理器,与存储器耦合,可用于执行存储器中的指令,以实现上述第二方面及其任意一种可能的实现方式中网络设备所执行的方法,或者,以实现上述第四方面及其任意一种可能的实现方式中网络设备所执行的方法。可选地,该通信装置还包括存储器。可选地,该通信装置还包括通信接口,处理器与通信接口耦合。
当该通信装置为网络设备时,该通信接口可以是收发器,或,输入/输出接口。
当该通信装置为设置于网络设备中的芯片时,该通信接口可以是输入/输出接口。
可选地,该收发器可以为收发电路。可选地,该输入/输出接口可以为输入/输出电路。
第九方面,提供了一种程序,该程序在被处理器执行时,用于执行第一方面或第三方面及其可能的实施方式中的任一方法。
第十方面,提供了一种程序,该程序在被处理器执行时,用于执行第二方面或第四方面及其可能的实施方式中的任一方法。
第十一方面,提供了一种程序产品,所述程序产品包括:程序代码,当所述程序代码被通信装置(例如,终端设备)的通信单元、处理单元或收发器、处理器运行时,使得通信设备执行上述第一方面或第三方面及其可能的实施方式中的任一方法。
第十二方面,提供了一种程序产品,所述程序产品包括:程序代码,当所述程序代码被通信装置(例如,网络设备)的通信单元、处理单元或收发器、处理器运行时,使得通信设备执行上述第二方面或第四方面及其可能的实施方式中的任一方法。
第十三方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信装置(例如,终端设备)执行上述第一方面或第三方面及其可能的实施方式中的任一方法。
第十四方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信装置(例如,网络设备)执行上述第二方面或第四方面及其可能的实施方式中的任一方法。
第十五方面,提供了一种用于传输探测参考信号SRS的通信***,包括:终端设备和网络设备,所述终端设备用于执行上述第一方面或第三方面及其可能的实施方式中的任一方法,所述网络设备用于执行上述第二方面或第四方面及其可能的实施方式中的任一方法。
可选地,所述通信***还可以包括其他与所述终端设备和/或所述网络设备交互或通信的设备。
图1是本申请的实施例应用的移动通信***的架构示意图;
图2是采用现有技术发送SRS对应的相关检测的一个仿真结果图;
图3是根据本申请实施例的传输探测参考信号SRS的方法的示意***互图;
图4是应用本申请实施例的资源映射图样的一个例子的示意图;
图5是应用本申请实施例的资源映射图样的另一个例子的示意图;
图6是应用本申请实施例的资源映射图样的再一个例子的示意图;
图7是根据本申请另一实施例的传输探测参考信号SRS的方法的示意***互图;
图8是应用本申请另一实施例的资源映射图样的一个例子的示意图;
图9是采用本申请实施例的传输探测参考信号SRS的仿真结果的示意图;
图10是根据本申请实施例的传输探测参考信号SRS的装置的示意性框图;
图11是根据本申请实施例的传输探测参考信号SRS的装置的示意性结构图;
图12是根据本申请实施例的另一传输探测参考信号SRS的装置的示意性框图;
图13是根据本申请实施例的另一传输探测参考信号SRS的装置的示意性结构图。
下面将结合附图,对本申请中的技术方案进行描述。
在本申请实施例中,“多个”可以理解为“至少两个”;“多项”可以理解为“至少两项”。
本申请实施例的技术方案可以应用于各种通信***,例如:全球移动通信(global system formobile communications,GSM)***、码分多址(code division multiple access,CDMA)***、宽带码分多址(wideband code division multiple access,WCDMA)***、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)***、LTE频分双工(frequency division duplex,FDD)***、LTE时分双工(time division duplex,TDD)、通用移动通信***(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信***、5G***或下一代无线***等。
图1是本申请的实施例应用的移动通信***的架构示意图。如图1所示,该移动通信***包括核心网设备110、无线接入网设备120和至少一个终端设备(如图1中的终端设备130和终端设备140)。终端设备通过无线的方式与无线接入网设备相连,无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备,也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上,还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的,也可以是可移动的。
图1只是示意图,该通信***中还可以包括其它网络设备,如还可以包括无线中继设备和无线回传设备,在图1中未画出。本申请的实施例对该移动通信***中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
无线接入网(radio access network,RAN)设备是终端设备通过无线方式接入到该移动通信***中的接入设备,可以是基站NodeB、演进型基站(evloved NodeB,eNB)、5G移动通信***中的下一代基站(next generation NodeB,gNB)、传输点、未来移动通信***中的基站或无线保真(wireless fidelity,Wi-Fi)***中的接入节点,5G***中的基站的一个或一组(包括多个天线面板)天线面板,5G中继节点,或者,还可以为构成gNB或 传输点的网络节点,如基带单元(baseband unit,BBU),或,分布式单元(distributed unit,DU)等。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。
在一些部署中,gNB可以包括集中式单元(centralized unit,CU)和DU。gNB还可以包括有源天线单元(active antenna unit,AAU)。CU实现gNB的部分功能,DU实现gNB的部分功能。比如,CU负责处理非实时协议和服务,实现无线资源控制(radio resource control,RRC),分组数据汇聚层协议(packet data convergence protocol,PDCP)层的功能。DU负责处理物理层协议和实时服务,实现无线链路控制(radio link control,RLC)层、媒体接入控制(media access control,MAC)层和物理(physical,PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终承载在PHY层的信息,因而,在这种架构下,高层信令,如RRC层信令,也可以认为是由DU发送的,或者,由DU+AAU发送的。可以理解的是,网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。
终端设备也可以称为终端Terminal、用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端(mobile terminal,MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。
无线接入网设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和卫星上。本申请的实施例对无线接入网设备和终端设备的应用场景不做限定。
本申请的实施例可以适用于下行信号传输,也可以适用于上行信号传输,还可以适用于设备到设备(device to device,D2D)的信号传输。对于下行信号传输,发送设备是无线接入网设备,对应的接收设备是终端设备。对于上行信号传输,发送设备是终端设备,对应的接收设备是无线接入网设备。对于D2D的信号传输,发送设备是终端设备,对应的接收设备也是终端设备。本申请的实施例对信号的传输方向不做限定。
无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信,也可以通过免授权频谱(unlicensed spectrum)进行通信,也可以同时通过授权频谱和免授权频谱进行通信。无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6千兆赫(gigahertz,GHz)以下的频谱进行通信,也可以通过6G以上的频谱进行通信,还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对无线接入网设备和终端设备之间所使用的频谱资源不做限定。
本申请实施例主要应用于5G NR***。本申请实施例也可以应用于其它的通信***,只要该通信***中存在实体需要发送传输方向指示信息,另一个实体需要接收该指示信息,并根据该指示信息确定一定时间内的传输方向。
应理解,图1中的通信***只是示例性地描述,并不对本申请实施例的保护范围构成限定。本申请实施例的技术方案也可以用于其他通信***,只要该通信***中需要进行传输方向的指示。
在本申请实施例中,终端设备或网络设备包括硬件层、运行在硬件层之上的操作***层,以及运行在操作***层上的应用层。该硬件层包括中央处理器(central processing unit,CPU)、内存管理单元(memory management unit,MMU)和内存(也称为主存)等硬件。该操作***可以是任意一种或多种通过进程(process)实现业务处理的计算机操作***,例如,Linux操作***、Unix操作***、Android操作***、iOS操作***或windows操作***等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且,本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定,只要能够通过运行记录有本申请实施例的提供的方法的代码的程序,以根据本申请实施例提供的方法进行通信即可,例如,本申请实施例提供的方法的执行主体可以是终端设备或网络设备,或者,是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外,本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如,计算机可读介质可以包括,但不限于:磁存储器件(例如,硬盘、软盘或磁带等),光盘(例如,压缩盘(compact disc,CD)、数字通用盘(digital versatile disc,DVD)等),智能卡和闪存器件(例如,可擦写可编程只读存储器(erasable programmable read-only memory,EPROM)、卡、棒或钥匙驱动器等)。另外,本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于,无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
在本申请的各个实施例中,如果没有特殊说明以及逻辑冲突,不同的实施例之间的术语和/或描述具有一致性、且可以相互引用,不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
为了便于理解,下面将对本申请实施例涉及到的术语或概念进行解释。
时间单元(或称作时域单元),可以包括帧、子帧、时隙(slot)、微时隙(或迷你时隙)(mini-slot)、符号等其他时域单元。微时隙为时域长度小于时隙的时域单元。一个帧的时间长度为10毫秒(ms),包括10个子帧,每个子帧对应的时间长度为1ms。一个时隙在扩展循环前缀情况下包括12个符号,在普通循环前缀情况下包括14个符号。这里的时域符号可以是正交频分复用(orthogonal frequency division multiplexing,OFDM)符号。一个微时隙包括的时域符号数小于14,比如2或4或7等等。或者,一个时隙可以包括7个时域符号,一个微时隙包括的时域符号数小于7,比如2或4等等,具体取值也不做限定。
上行到达时间差(uplink time difference of arrivial,UTDOA)是一种基于上行到达时间差的定位方法。具体地,终端设备发送探测参考信号(sounding reference signal,SRS),由网络设备接收探测参考信号(sounding reference signal,SRS),并测量SRS接收时刻相对于某个预置时间的相对到达时间(relative time of arrival,RTOA)。通过将两个网络设备测得的相对到达时间差相减,即可获得终端设备到两个网络设备的到达时间差(TDOA)。基于该到达时间差可以获得终端设备到两个网络设备的距离差,从而可以确定终端设备在以两个网络设备位置为焦点的双曲线上。当有3个网络设备参与定位,则可以绘制2条双曲线,2条双曲线的交点(之一)即为终端位置。
上行到达角(uplink angle of arrival,UAoA)是一种基于上行角度的定位方法。具体 地,终端设备发送SRS;对应的,网络设备接收SRS,并测量SRS到达角,从而可以确定终端设备在该到达角方向确定的射线上。若有2个网络设备参与定位,则可以绘制2条射线,2条射线的交点即为终端位置。
多小区(Multi-cell)往返时间(round trip time,RTT)是一种基于RTT的定位方法。具体地,网络设备发送下行信号,接收SRS,而终端发送SRS,接收下行信号。网络设备和终端分别测量收发时间差(Rx–Tx time difference),从而确定RTT,进一步确定终端在以该RTT一半对应距离为半径,网络设备为圆心的圆上。当有2个网络设备参与定位,则可以绘制2个圆,2个圆的焦点(之一)即为终端位置。
从上文描述可知,上述三种定位方法均需要SRS参与。目前SRS配置仅支持一个SRS资源。其中,一个SRS资源至少包括SRS的端口数,SRS资源对应的时域和频域位置。如果一个SRS资源在一个时隙内占用多个符号时,每个端口在每个符号上映射的资源元素(resource element,RE)位置都是一样的。无论是否配置跳频,在不同的资源块(resource block,RB)(其中,一个RB包括12个RE)内,SRS资源占用的RE位置在不同符号上是相同的。而不同符号上RE位置相同的映射方式并不利于定位。
这里结合图2中示例的仿真结果说明上述问题。图2示出了采用现有技术的SRS资源映射图样发送SRS对应的相关检测的一个仿真结果图。假设SRS资源占用的RE位置在不同符号上是相同的,终端设备在不同符号的相应RE资源上发送SRS信号。图2中,假设仿真条件设置为:快速傅里叶变换(fast Fourier transform,FFT)长度=2048,循环前缀(cyclic prefix,CP)长度144,SRS带宽100RB,SRS符号个数4,SRS梳齿数4,则SRS在时域上的相关峰的仿真结果如图2所示。
从图2可知,SRS的自相关存在多个局部峰值,其中,中心峰值为主峰(即图2中最高的峰),其他旁峰为虚警。网络设备采用滑动相关方法接收SRS时,可能会将旁峰识别成主峰。这样会导致网络设备使用旁峰对应的SRS进行定位,计算相应的相对到达时间、收发时间差,或到达角估计偏差等等,从而会出现定位出错等问题。
其中,网络设备采用的滑动相关具体可以采用下式实现:
其中,r(n)为相关输出,y(n)为接收到的序列,x(n)为本地序列,n表示采样点编号;M为相关长度,取决于x(m)的序列长度,这里,m的取值范围是0到M-1;x
*中的右上标的星号表示共轭。如果y(n)=x(n-D),即y(n)为x(n)的时延,D表示接收序列相对于发送序列的时延,那么按照上述公式,就能够在r(D)处获得相关峰。
一般而言,如果y(n)通过下式得到:
即y(n)为x(n)经过多径信道h
n之后的信号,h
n表示时延为n的信道响应,且x(n)具有理想自相关特性,即
则r(n)可以写成r(n)=h
m。δ(n)表示Kronecker函数,该函数只在n=0时取1,在n为其他 时取0。
应理解,滑动相关的具体解释可以参考现有技术中的描述,为了简洁,这里不作赘述。
为解决上述问题,本申请实施例提供一种传输SRS的方法,网络设备向终端设备发送交错信息,使得终端设备针对同一天线端口在不同时间单元上传输的SRS信号在频域上交错发送,以消除自相关函数上的旁峰,从而提高定位的准确性。或者,网络设备可以向终端设备发送指示信息,以指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,以消除自相关函数上的旁峰,从而提高定位的准确性。
交错是指终端设备或网络设备发送的信号在相邻单元上所使用的频域资源不同,或者在相邻时域上单元的频域资源存在偏移。信号包括但不限于SRS,时域单元包括符号,微时隙,时隙,子帧或无线帧等。如果时域单元是子帧或无线帧,所述信号可以占用子帧或无线帧中的部分符号。以下不再赘述。
图3示出了根据本申请实施例的传输探测参考信号SRS的方法300的示意***互图。如图3所示,所述方法300包括:
S310,网络设备向终端设备发送第一信息,所述第一信息包括交错信息,所述交错信息包括用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息。对应的,所述终端设备接收来自所述网络设备的所述第一信息。
在本申请实施例中,网络设备可以通过显示或者隐式的方式,指示终端设备对同一天线端口在不同时间单元上传输的SRS信号在频域上进行交错发送。比如,网络设备可以为终端设备配置相应的交错资源,以使得终端设备在交错资源上发送SRS信号,从而达到交错发送的目的,或者,也可以向终端设备发送指示,以指示终端设备在对同一天线端口在不同时间单元上传输的SRS信号在频域上进行交错发送。
应理解,对于网络设备指示交错发送的情形,网络设备可以对现有SRS资源指示集合功能的参数增加定位功能(该定位功能用于指示交错发送),也可以通过新引入的参数实现,对此不作具体限定。
在一种可能的实现方式中,交错信息包括:相邻时间单元的RE映射的偏移量。在该实现方式中,可以通过相邻时间单元的RE映射的偏移量确定不同时间单元上的资源交错。假定配置一个SRS资源,通过相邻时间单元的RE映射的偏移量可以确定SRS在不同时间单元上实现频域交错。应理解,本申请实施例并不限定SRS资源配置的数量,可以是多个SRS资源,每个SRS资源采用相同或不同的相邻时间单元的RE映射的偏移量。
在一种可能的实现方式中,交错信息包括:梳齿数和时域重复因子。通过梳齿和时域重复因子,使得终端设备可以确定在多个时间单元上频域资源的交错。
在一种可能的实现方式中,交错信息包括:交错指示。所述交错指示用于指示终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。通过交错指示,使得终端设备可以在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
在一种可能的实现方式,所述第一信息包括SRS资源配置信息,可以理解为用于配置SRS资源。网络设备可以为终端设备配置多个SRS资源集合。可选地,SRS资源配置信息中可以包括以下信息中的一项或多项:SRS资源对应的端口信息(比如,端口数目)、循环移位信息、梳齿个数信息、初始循环移位、初始梳齿号等等。当第一信息包括多个SRS资源集合时,不同SRS资源集合中的SRS资源是交错的,包括时域和频域上的资源 的交错。
其中,所述SRS资源配置信息中可以包括交错信息,也可以不包括交错信息。若所述SRS资源配置信息中包括交错信息,交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。也就是说,网络设备可以直接指示终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
在本申请实施例中,网络设备可以复用SRS资源指示集合功能中的功能参数,来实现交错指示。具体而言,SRS资源指示集合功能的参数(usage)包括功能:波束管理,码本,非码本,天线切换,可以对usage新增定位功能(positioning),或称作定位指示,即复用usage参数实现交错指示功能。也就是说,可以将SRS资源指示集合功能的参数(usage)设置为定位(positioning)功能,以实现交错指示。
在一种可能的实现中,第一信息包括SRS资源配置信息,SRS资源配置信息中包括交错信息。也就是说,网络设备在向终端设备发送配置的SRS资源配置信息时,可以在SRS资源配置中新增交错信息。这样,终端设备可以基于交错信息可以确定交错SRS资源映射图样。
对于SRS资源配置信息中包括交错信息的情形,所述交错信息可以包括相邻时间单元的RE映射的偏移量。这里,终端设备可以从网络设备直接获取相邻时间单元的RE映射的偏移量,以便于后续确定SRS资源映射图样。
可选地,所述交错信息也可以包括时域重复因子和梳齿数。
可选地,所述相邻时间单元的RE映射的偏移量可以是网络设备从定位中心获取的。定位中心可以是定位管理功能的部分装置或组件(比如定位管理功能(location management function,LMF)、定位管理组件(location management component,LMC)。
所述网络设备可以是所述终端设备的服务基站。可选地,所述网络设备还可以将所述相邻时间单元的RE映射的偏移量发送给邻区网络设备,以便于邻区网络设备可以获取所述相邻时间单元的RE映射的偏移量。
可选地,网络设备可以在交错信息中携带梳齿数和时域重复因子。这样,终端设备结合梳齿数、时域重复因子和相邻时间单元的RE映射的偏移量,得到SRS资源映射图样。
对于SRS资源配置信息中包括交错信息的情形,所述交错信息包括时域重复因子和梳齿数。这里,终端设备可以从网络设备获取时域重复因子和梳齿数,然后使用时域重复因子和梳齿数计算相邻时间单元的RE映射的偏移量,以便于后续确定SRS资源映射图样。
应理解,在上述各种可能的实现方式中,即使网络设备为终端设备配置了交错资源(比如相邻时间单元的RE映射的偏移量,或者,时域重复因子和梳齿数),网络设备还可以将所述交错信息用作交错指示。也就是说,网络设备除了为终端设备配置交错资源外,还可以进一步指示终端设备交错发送SRS信号。
在一种可能的实现中,第一信息包括SRS资源配置信息和交错信息。所述交错信息可以独立于SRS资源配置信息。所述交错信息包括交错指示。具体地,可以在无线资源控制(radio resource control,RRC)协议中引入新的定位参数。举例来说,可以在SRS资源指示集合功能中引入新的参数,比如,交错(staggering)参数,以实现交错指示功能。如果新的参数配置为真(true)或开启(on),则终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
在一种可能的实现中,所述第一信息可以通过不同的消息进行发送。
可选地,网络设备通过RRC消息,向所述终端设备发送所述第一信息,即RRC消息中包括所述第一信息。这里,网络设备可以通过RRC消息,将SRS资源配置信息与交错信息一并发送给终端设备。
或者,可选地,网络设备可以通过动态信令,比如第一信令,向终端设备发送所述用作交错指示的交错信息。比如,第一信令可以是物理层下行控制信道(physical downlink control channel,PDCCH),媒体接入控制层控制元素(medium access control control element,MAC CE)等信令。这里,交错信息可以理解为独立于SRS资源配置信息。网络设备可以通过动态信令告知终端设备进行交错发送,具体即:在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
或者,可选地,通过RRC消息发送交错信息的一部分信息,而通过动态信令发送交错信息的另一部分信息。例如,将交错信息的基本配置,如交错资源(比如相邻时间单元的RE映射的偏移量,或者,时域重复因子和梳齿数)通过RRC进行配置,而在动态信令中仅指示终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。此时动态信令可以仅包括交错指示。
S320,所述终端设备根据所述第一信息,确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号在频域上交错的资源图样。
这里,“交错”可以理解为“存在偏移”。同一天线端口在不同时间单元上传输的SRS信号在频域上交错的资源图样可以理解为:同一天线端口在不同时间单元上传输的SRS信号对应的RE在频域上存在偏移。
对于所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量的情形,相应的,S320包括:所述终端设备根据所述相邻时间单元间的资源元素RE映射的偏移量,确定所述SRS资源映射图样。
也就是说,网络设备可以为终端设备配置SRS交错资源,具体表现形式为SRS资源配置中包括交错信息,交错信息包括相邻时间单元的RE映射的偏移量。终端设备根据该相邻时间单元的RE映射的偏移量,可以确定SRS资源映射图样,即SRS交错资源,从而在SRS交错资源上发送SRS信号。
对于交错信息包括时域重复因子和梳齿数,相应的,S320包括:所述终端设备根据所述时域重复因子和所述梳齿数,计算相邻时间单元间的RE映射的偏移量;所述终端设备根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样。
也就是说,网络设备可以向终端设备发送包括时域重复因子和梳齿数的交错信息,而非直接发送相邻时间单元间的RE映射的偏移量。终端设备使用时域重复因子和梳齿数计算相邻时间单元间的RE映射的偏移量。比如,相邻时间单元间的RE映射的偏移量为:对梳齿数与时域重复因子的比值进行向上取整得到的值。
在上述各种可能的实现方式中,终端设备在得到相邻时间单元间的RE映射的偏移量后,可以确定SRS资源映射图样。
具体地,终端设备可以采用以下公式确定SRS资源中每个端口的资源映射:
其中,
为SRS资源配置中的初始循环移位,
为SRS资源配置的循环移位总数,
为SRS资源配置中的端口数,p
i=1000+i,p
i为SRS资源的端口号,i表示端口索引,
为端口p
i(在符号l′上)占用的发送梳齿号,
为SRS资源配置的发送梳齿号,K
TC为梳齿数,O为相邻符号间RE映射的偏移量,l′为SRS符号相对索引,R为SRS资源配置的时域重复因子。其中,O通过下式计算:
为了便于理解,以4符号单端口SRS资源映射为例,并结合图4至图6中的资源映射图样的例子进行描述。这里作统一说明,在图4至图6中,一个4符号单端口SRS资源映射到一个时隙内的符号10、符号11、符号12和符号13。
图4是以
K
TC=2,R=2为例,假设O=1,即符号10与符号11之间的RE偏移为1;
即符号10占用梳齿0;K
TC=2,即梳齿数为2。其中,时域重复因子为2,表示SRS交错资源映射在两个符号上,且符号10与符号11占用相同的RB。在图4中虽然符号12和符号13与符号10与符号11在一个RB内映射位置一致,但这并不对本申请实施例构成限定,事实上,符号12和符号13可以通过跳频映射到与符号10与符号11不同的RB上。
图5是以
K
TC=4,R=2为例,假设O=2,即符号10与符号11之间的RE偏移为2;
即符号10占用梳齿1;K
TC=4,即梳齿数为2。其中,时域重复因子为2,表示SRS交错资源映射在两个符号上,且符号10与符号11占用相同的RB。在图5中符号12和符号13与符号10与符号11在一个RB内映射位置一致,但这并不对本申请实施例构成限定,事实上,符号12和符号13可以通过跳频映射到与符号10与符号11不同的RB上。
图6是以
K
TC=4,R=4为例,假设O=1,即符号10与符号11之间的RE偏移为1;
即符号10占用梳齿2;K
TC=4,即梳齿数为4。其中,时域重复因子为4,表示SRS交错资源映射在四个符号上,符号10、符号11、符号12和符号13占用相同的RB。
应理解,图4至图6中的例子仅仅是为了便于本领域技术人员理解本申请实施例,并非要将本申请实施例限于例示的具体场景。本领域技术人员根据图4至图6的例子,显然可以进行各种等价的修改或变化,这样的修改或变化也落入本申请实施例的范围内。
S330,所述终端设备根据所述SRS资源映射图样发送SRS。
终端设备可以基于前文确定的SRS资源映射图样,在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
或者,举例来说,对于配置了交错(staggering)参数的情形,如果交错(staggering)参数配置为真(true)或开启(on),终端设备可以基于交错指示,在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
举例来说,对于SRS资源配置信息中复用usage参数的情形,即usage新增定位功能, 若usage设置为定位功能,终端设备可以基于该定位功能,在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
这里,终端设备发送的SRS可以是向服务基站发送,也可以向邻区基站发送SRS,对此不作限定。
在本申请实施例中,通过引入交错信息,终端设备可以确定SRS资源在不同时间单元上的映射偏移,可以实现同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样配置。如果采用SRS资源交错映射图样传输SRS,能够消除自相关函数上的旁峰,有助于提高基于SRS测量相对到达时间、收发时间差的测量以及到达角的准确性。
本申请还提供了另一个实施例,配置同一SRS资源集合中包括的多个SRS资源对应的交错图样,并通过使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,以达到消除自相关函数上的旁峰的目的,有助于提高基于SRS测量相对到达时间、收发时间差的测量以及到达角的准确性。
图7示出了根据本申请另一实施例的传输探测参考信号SRS的方法700的示意***互图。如图7所示,所述方法700包括:
S710,网络设备向终端设备发送第一指示信息,所述第一指示信息用于指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号。对应的,所述终端设备接收所述第一指示信息。
可选地,所述第一指示信息具体可以为定位(position)指示,或共端口(sameport)指示,或相干合并指示(coherent combining)。对于定位指示,这里可以对现有参数usage新增定位(positioning)功能,即复用usage参数实现交错指示功能。共端口(sameport)指示,或相干合并指示(coherent combining)为新引入的参数。
具体而言,网络设备可以向终端设备发送SRS资源配置信息,该SRS资源配置信息中包括一个或多个SRS资源集合,每个SRS资源集合中包括多个SRS资源。网络设备在向终端设备发送SRS资源配置信息时,可以在SRS资源配置信息中增加第一指示信息,用以指示同一SRS资源集合中:具有相同端口号的不同SRS资源上的SRS信号是否使用相同的天线端口发送。
S720,终端设备根据所述第一指示信息,使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号,所述不同资源属于同一SRS资源集合。
具体而言,如果usage设置为定位功能,则终端设备使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号;如果共端口(sameport)指示,或相干合并指示(coherent combining)配置为真(true)或开启(on),则终端设备使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号。因此,终端设备在收到第一指示信息后,能够在同一SRS资源集合内具有相同端口号的不同SRS资源上交错发送SRS信号,从而提高检测SRS的准确性,有助于提升定位精度。
为了便于理解,下面结合图8中的例子进行描述。如图8所示,假设一个SRS资源集合中包括两个SRS资源,分别为SRS资源1和SRS资源2。SRS资源1为一个2端口(分别为端口1000和端口1001)资源,映射在一个时隙内的符号10、符号11上,梳齿结构为4梳齿,其中,端口1000和端口1001均占用梳齿0,即占用了相同的RE,二者 并通过序列循环移位区分。
类似的,SRS资源2为一个2端口(分别为端口1000和端口1001)资源,映射在一个时隙内的符号12、符号13上,梳齿结构为4梳齿,其中,端口1000和端口1001均占用梳齿2,即占用了相同的RE,并通过序列循环移位区分。
若终端设备收到第一指示信息,则终端设备使用相同的天线或天线集合在SRS资源1的端口1000和SRS资源2的端口1000发送SRS信号。类似地,终端设备使用相同的天线或天线集合在SRS资源1的端口1001和SRS资源2的端口1001发送SRS信号。
应理解,图8中的例子仅仅是为了便于本领域技术人员理解本申请实施例,并非要将本申请实施例限于例示的具体场景。本领域技术人员根据图8的例子,显然可以进行各种等价的修改或变化,这样的修改或变化也落入本申请实施例的范围内。
可选地,终端设备也可以结合空间关系信息,来确定是否使用相同天线端口在具有相同端口号的不同资源上发送SRS信号。可选地,所述方法700还包括:
所述网络设备向所述终端设备发送空间关系信息配置,所述空间关系信息配置中包括为不同SRS资源配置的相同的空间关系信息。相应的,所述终端设备根据所述第一指示信息以及空间关系信息配置,使用相同天线端口在具有相同端口号的不同资源上发送信号,其中,所述不同资源属于同一SRS资源集合中,且所述不同资源具有相同的空间关系信息。
其中,空间关系信息可以是下行信号,相应的,终端设备可以采用接收该下行信号的波束来发送SRS。可选地,下行信号可以是同步信号物理层广播信号块(synchronization signal/physical broadcast channel block,SS/PBCH block)(也可称作SSB)或者信道状态信息参考信号(channel state information reference signal,CSI-RS)。
或者,空间关系信息也可以是一个SRS(比如第一SRS),相应的,终端设备可以采用与该第一SRS对应的发送波束相同的波束来发送SRS。
具体而言,如果终端设备收到了第一指示信息,且同一SRS资源集合中的每个SRS资源的空间关系信息均配置成相同的内容,则终端设备使用相同的天线或天线集合,在具有相同端口号的不同资源上发送SRS信号。或者,如果终端设备收到了第一指示信息,且同一SRS资源集合中的每个SRS资源的空间关系信息均未配置,则终端设备使用相同的天线或天线集合,在具有相同端口号的不同资源上发送SRS信号。
对于网络设备而言,网络设备在向终端设备发送了第一指示信息后,可以认为终端设备使用了相同的天线或天线集合,在具有相同端口号的不同资源上发送SRS信号。相应的,网络设备对在相同端口号上接收到的SRS信号进行多符号联合解调。其中,多符号联合解调也可以称作相干解调。所述网络设备可以是服务基站。应理解,多符号联合解调中的“符号”也可以替换为其他时间单元,即多时间单元联合解调,对此不作限定。
这里,如果邻区基站收到了终端设备使用相同的天线或天线集合,在具有相同端口号的不同资源上发送的SRS信号,也可以进行多符号联合解调。
图9示出了采用本申请实施例的传输探测参考信号SRS的仿真结果的示意图。若采用本申请实施例的传输探测参考信号SRS的方式(比如方法300或方法700),相比于图2的仿真条件,需要增加参数SRS梳齿偏移。假设SRS梳齿偏移=1,其他仿真条件与图2仿真条件相同,即:FFT长度=2048,CP长度144,SRS带宽100RB,SRS符号个数4, SRS梳齿数4,则得到的仿真结果如图9所示。从图9可以看到,与图2相比,若采用本申请实施例的交错方式发送,旁峰明显得到了显著的抑制。这样,网络设备可以准确地识别主峰,并使用主峰对应的SRS进行定位,从而提高了定位准确性。
因此,本申请实施例的传输SRS信号的方法可以显著降低虚峰,从而获得更可靠的SRS检测。将获得的SRS应用到前文提到的三种定位方法,能够提高RTOA的精度,收发时间差估计精度,以及AoA的估计精度。
应理解,图9中的仿真结果仅仅是为了便于本领域技术人员理解本申请实施例,并非要将本申请实施例限于例示的具体场景。
在本申请的各个实施例中,如果没有特殊说明以及逻辑冲突,不同的实施例之间的术语和/或描述具有一致性、且可以相互引用,不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
还应理解,本申请各个实施例可以独立实施,也可以进行合理的组合,并且实施例中出现的各个术语的解释或说明可以在各个实施例中互相参考或解释,对此不作限定。
还应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
上文结合图1至图9详细描述了根据本申请实施例的传输探测参考信号SRS的方法。下面将结合图10至图13描述根据本申请实施例的传输探测参考信号SRS的装置。应理解,方法实施例所描述的技术特征同样适用于以下装置实施例。
图10示出了根据本申请实施例的传输探测参考信号SRS的装置1000的示意性框图。所述装置1000用于执行前文方法实施例中终端设备执行的方法。可选地,所述装置1000的具体形态可以是终端设备或终端设备中的芯片。本申请实施例对此不作限定。所述装置1000包括:
收发模块1010,用于接收来自网络设备的第一信息,所述第一信息包括交错信息,所述交错信息是用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;
处理模块1020,用于根据所述第一信息,确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样;
所述收发模块1010还用于,根据所述SRS资源映射图样发送SRS。
在一种可能的实现方式中,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量;所述处理模块1020用于根据所述第一信息,确定SRS资源映射图样,具体包括:根据所述相邻时间单元间的资源元素RE映射的偏移量,确定所述SRS资源映射图样。可选地,所述交错信息中还包括梳齿数和时域重复因子。
在一种可能的实现方式中,所述交错信息包括时域重复因子和梳齿数;其中,所述处理模块1020用于根据所述第一信息,确定SRS资源映射图样,具体包括:根据所述时域重复因子和所述梳齿数,计算相邻时间单元间的RE映射的偏移量;根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样。
在一种可能的实现方式中,所述第一信息还包括SRS资源配置信息。
可选地,所述SRS资源配置信息中包括所述交错信息。
在一种可能的实现方式中,所述处理模块1020用于根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样,具体包括:
根据以下公式确定SRS资源映射图样:
其中,
为SRS资源配置中的初始循环移位,
为SRS资源配置的循环移位总数,
为SRS资源配置中的端口数,p
i=1000+i,p
i为SRS资源的端口号,i表示端口索引,
为端口p
i在符号l′上占用的发送梳齿号,
为SRS资源配置的发送梳齿号,K
TC为梳齿数,O为相邻符号间RE映射的偏移量,l′为SRS符号相对索引,R为SRS资源配置的时域重复因子。
可选地,所述O通过下式计算:
或者,所述O是网络设备发送给终端设备的。
可选地,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
可选地,所述交错信息包括交错指示。
可选地,所述交错信息包括定位指示。
在一种可能的实现方式中,所述收发模块1010用于接收来自网络设备的第一信息,具体包括:接收来自网络设备的第一信令,所述第一信令包括所述第一信息。
在一种可能的实现方式中,所述收发模块1010用于接收来自网络设备的第一信息,包括:接收来自所述网络设备的无线资源控制RRC消息,所述RRC消息包括所述第一信息。
应理解,根据本申请实施例的传输探测参考信号SRS的装置1000可对应于前述方法实施例中终端设备的方法,比如,图3中的方法,并且装置1000中的各个模块的上述和其它管理操作和/或功能分别为了实现前述方法实施例中终端设备的方法的相应步骤,因此也可以实现前述方法实施例中的有益效果,为了简洁,这里不作赘述。
或者,所述装置1000还用于执行本申请另一实施例,具体包括:
收发模块1010,用于接收来自网络设备的第一指示信息,所述第一指示信息用于指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号;
所述收发模块1010还用于,根据所述第一指示信息,使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号,所述不同资源属于同一SRS资源集合。
可选地,所述收发模块1010还用于,接收网络设备发送的空间关系信息配置,所述空间关系信息配置中包括为不同SRS资源配置的相同的空间关系信息。
在一种可能的实现方式中,所述收发模块1010,用于根据所述第一指示信息,使用相同天线端口在具有相同SRS端口号的不同资源发送SRS信号,具体包括:
根据所述第一指示信息以及SRS资源的空间关系信息,使用相同天线端口在具有相 同端口号的不同资源上发送信号,其中,所述不同资源属于同一SRS资源集合中,且所述不同资源具有相同的空间关系信息。
可选地,所述第一指示信息包括定位指示,或共端口指示,或相干合并指示。
应理解,根据本申请实施例的传输探测参考信号SRS的装置1000可对应于前述方法实施例中终端设备的方法,比如,图7中的方法,并且装置1000中的各个模块的上述和其它管理操作和/或功能分别为了实现前述方法实施例中终端设备的方法的相应步骤,因此也可以实现前述方法实施例中的有益效果,为了简洁,这里不作赘述。
还应理解,装置1000中的各个模块可以通过软件和/或硬件形式实现,对此不作具体限定。换言之,装置1000是以功能模块的形式来呈现。这里的“模块”可以指特定应用集成电路(application specific integrated circuit,ASIC)、电路、执行一个或多个软件或固件程序的处理器和存储器、集成逻辑电路,和/或其他可以提供上述功能的器件。可选地,在一个简单的实施例中,本领域的技术人员可以想到装置1000可以采用图11所示的形式。处理模块1020可以通过图11所示的处理器1101实现。收发模块1010可以通过图11所示的收发器1103来实现。具体地,处理器通过执行存储器中存储的计算机程序来实现。可选地,当所述装置1000是芯片时,那么收发模块1010的功能和/或实现过程还可以通过管脚或电路等来实现。可选地,所述存储器为所述芯片内的存储单元,比如寄存器、缓存等,所述存储单元还可以是所述计算机设备内的位于所述芯片外部的存储单元,如图11所的存储器1102。
在硬件实现上,上述收发模块1010可以为收发器,收发器(图10中是以收发模块1010示意)在通信单元中构成通信接口。应理解,通信接口可以是软件或硬件接口。通信接口可以是包括无线收发的通信接口,也可以是经过其他处理电路对接收的无线信号进行处理后而输入的数字信号的接口,还可以是和其他模块进行通信的软件或硬件接口。
图11示出了根据本申请实施例的传输探测参考信号SRS的装置1100的示意性结构图。如图11所示,所述装置1100包括:处理器1101,处理器1101用于对终端设备的动作进行控制管理。
在一种可能的实现方式中,所述处理器1101用于调用接口执行如下动作:接收来自网络设备的第一信息,所述第一信息包括交错信息,所述交错信息是用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;所述处理器1101还用于根据所述第一信息,确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样;所述处理器1101用于调用接口执行如下动作:根据所述SRS资源映射图样发送SRS。
或者,在另一种可能的实现方式中,
应理解,所述处理器1101可以调用接口执行上述收发动作,其中,调用的接口可以是逻辑接口或物理接口,对此不作限定。可选地,物理接口可以通过收发器实现。可选地,所述装置1100还包括收发器1103。
可选地,所述装置1100还包括存储器1102,存储器1102中可以存储上述方法实施例中的程序代码,以便于处理器1101调用。存储器1102可以跟处理器1101耦合在一起,也可以不耦合在一起。
具体地,若所述装置1100包括处理器1101、存储器1102和收发器1103,则处理器 1101、存储器1102和收发器1103之间通过内部连接通路互相通信,传递控制和/或数据信号。在一个可能的设计中,处理器1101、存储器1102和收发器1103可以通过芯片实现,处理器1101、存储器1102和收发器1103可以是在同一个芯片中实现,也可能分别在不同的芯片实现,或者其中任意两个功能组合在一个芯片中实现。该存储器1102可以存储程序代码,处理器1101调用存储器1102存储的程序代码,以实现装置1100的相应功能。应理解,所述装置1100还可用于执行前文实施例中终端设备侧的其他步骤和/或操作,为了简洁,这里不作赘述。
应理解,所述装置1100还可用于执行前文实施例中终端设备侧的其他步骤和/或操作,为了简洁,这里不作赘述。
图12示出了根据本申请实施例的传输探测参考信号SRS的装置1200的示意性框图。所述装置1200用于执行前文方法实施例中网络设备执行的方法。可选地,所述装置1200的具体形态可以是网络设备或网络设备中的芯片。本申请实施例对此不作限定。所述装置1200包括:
处理模块1210,用于确定交错信息,所述交错信息用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;
收发模块1220,用于向终端设备发送第一信息,所述第一信息包括所述交错信息,所述第一信息用于所述终端设备确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样。
在一种可能的实现方式中,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量。
在一种可能的实现方式中,所述交错信息包括时域重复因子和梳齿数。
在一种可能的实现方式中,所述第一信息还包括SRS资源配置信息。
可选地,所述SRS资源配置信息中包括所述交错信息。
可选地,所述交错信息中还包括梳齿数和时域重复因子。
可选地,所述相邻时间单元间的RE映射的偏移量是所述装置从定位中心获取的。
在一种可能的实现方式中,所述收发模块1220还用于:将所述相邻时间单元间的RE映射的偏移量发送给邻区网络设备。
在一种可能的实现方式中,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
在一种可能的实现方式中,所述收发模块1220用于向终端设备发送第一信息,具体包括:通过第一信令向所述终端设备发送所述第一信息。
在一种可能的实现方式中,所述收发模块1220用于向终端设备发送第一信息,具体包括:向所述终端设备发送无线资源控制RRC消息,所述RRC消息包括所述第一信息。
应理解,根据本申请实施例的传输探测参考信号SRS的装置1200可对应于前述方法实施例中网络设备的方法,比如,图3中的方法中的方法,并且装置1200中的各个模块的上述和其它管理操作和/或功能分别为了实现前述方法实施例中网络设备的方法的相应步骤,因此也可以实现前述方法实施例中的有益效果,为了简洁,这里不作赘述。
或者,所述装置1200还可以执行本申请另一实施例,具体包括:
收发模块1220,用于向终端设备发送第一指示信息,所述第一指示信息用于指示终 端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,所述不同资源属于同一SRS资源集合;
所述收发模块1220还用于,接收所述终端设备使用相同的天线端口发送的SRS,并对接收到的SRS进行多符号联合解调。
在一种可能的实现方式中,所述收发模块1220还用于,向所述终端设备发送空间关系信息配置,所述空间关系信息配置中包括为不同SRS资源配置的相同的空间关系信息。
可选地,所述第一指示信息为定位指示,或共端口指示,或相干合并指示。
应理解,根据本申请实施例的传输探测参考信号SRS的装置1200可对应于前述方法实施例中网络设备的方法,比如,图7中的方法,并且装置1200中的各个模块的上述和其它管理操作和/或功能分别为了实现前述方法实施例中网络设备的方法的相应步骤,因此也可以实现前述方法实施例中的有益效果,为了简洁,这里不作赘述。
还应理解,装置1200中的各个模块可以通过软件和/或硬件形式实现,对此不作具体限定。换言之,装置1200是以功能模块的形式来呈现。这里的“模块”可以指特定应用集成电路ASIC、电路、执行一个或多个软件或固件程序的处理器和存储器、集成逻辑电路,和/或其他可以提供上述功能的器件。可选地,在一个简单的实施例中,本领域的技术人员可以想到装置1200可以采用图13所示的形式。处理模块1210可以通过图13所示的处理器1301实现。收发模块1220可以通过图13所示的收发器1303来实现。具体的,处理器通过执行存储器中存储的计算机程序来实现。可选地,当所述装置1200是芯片时,那么收发模块1220的功能和/或实现过程还可以通过管脚或电路等来实现。可选地,所述存储器为所述芯片内的存储单元,比如寄存器、缓存等,所述存储单元还可以是所述计算机设备内的位于所述芯片外部的存储单元,如图13所的存储器1302。
在硬件实现上,上述收发模块1220可以为收发器,收发器(图12中是以收发模块1220示意)在通信单元中构成通信接口。应理解,通信接口可以是软件或硬件接口。通信接口可以是包括无线收发的通信接口,也可以是经过其他处理电路对接收的无线信号进行处理后而输入的数字信号的接口,还可以是和其他模块进行通信的软件或硬件接口。
图13示出了根据本申请实施例的传输探测参考信号SRS的装置1300的示意性结构图。如图13所示,所述装置1300包括:处理器1301,处理器1301用于对网络设备的动作进行控制管理。
在一种可能的实现方式中,所述处理器1301用于确定交错信息,所述交错信息用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;所述处理器1301还用于调用接口执行如下收发动作:向终端设备发送第一信息,所述第一信息包括所述交错信息,所述第一信息用于所述终端设备确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样。
在另一种可能的实现方式中,所述处理器1301用于调用接口执行如下收发动作:向终端设备发送第一指示信息,所述第一指示信息用于指示终端设备使用相同天线端口在具有相同端口号的不同资源上发送SRS信号,所述不同资源属于同一SRS资源集合;接收所述终端设备使用相同的天线端口发送的SRS,并对接收到的SRS进行多符号联合解调。
应理解,所述处理器1301可以调用接口执行上述收发动作,其中,调用的接口可以 是逻辑接口或物理接口,对此不作限定。可选地,物理接口可以通过收发器实现。可选地,所述装置1300还包括收发器1303。
可选地,所述装置1300还包括存储器1302,存储器1302中可以存储上述方法实施例中的程序代码,以便于处理器1301调用。存储器1302可以跟处理器1301耦合在一起,也可以不耦合在一起。
具体地,若所述装置1300包括处理器1301、存储器1302和收发器1303,则处理器1301、存储器1302和收发器1303之间通过内部连接通路互相通信,传递控制和/或数据信号。在一个可能的设计中,处理器1301、存储器1302和收发器1303可以通过芯片实现,处理器1301、存储器1302和收发器1303可以是在同一个芯片中实现,也可能分别在不同的芯片实现,或者其中任意两个功能组合在一个芯片中实现。该存储器1302可以存储程序代码,处理器1301调用存储器1302存储的程序代码,以实现装置1300的相应功能。应理解,所述装置1300还可用于执行前文实施例中网络设备侧的其他步骤和/或操作,为了简洁,这里不作赘述。
应理解,所述装置1300还可用于执行前文实施例中网络设备侧的其他步骤和/或操作,为了简洁,这里不作赘述。
上述本申请实施例揭示的方法可以应用于处理器中,或者由处理器实现。处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。
上述的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路ASIC、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,还可以是***芯片(system on chip,SoC),还可以是中央处理器(central processor unit,CPU),还可以是网络处理器(network processor,NP),还可以是数字信号处理电路(digital signal processor,DSP),还可以是微控制器(micro controller unit,MCU),还可以是可编程控制器(programmable logic device,PLD)或其他集成芯片。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机 存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。应注意,本文描述的***和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
还应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
本申请中出现的类似于“项目包括如下中的一项或多项:A,B,以及C”表述的含义,如无特别说明,通常是指该项目可以为如下中任一个:A;B;C;A和B;A和C;B和C;A,B和C;A和A;A,A和A;A,A和B;A,A和C,A,B和B;A,C和C;B和B,B,B和B,B,B和C,C和C;C,C和C,以及其他A,B和C的组合。以上是以A,B和C共3个元素进行举例来说明该项目的可选用条目,当表达为“项目包括如下中至少一种:A,B,……,以及X”时,即表达中具有更多元素时,那么该项目可以适用的条目也可以按照前述规则获得。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (26)
- 一种传输探测参考信号SRS的方法,其特征在于,包括:终端设备接收来自网络设备的第一信息,所述第一信息包括交错信息,所述交错信息是用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;所述终端设备根据所述第一信息,确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样;所述终端设备根据所述SRS资源映射图样发送SRS。
- 根据权利要求1所述的方法,其特征在于,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量;所述终端设备根据所述第一信息,确定SRS资源映射图样,包括:所述终端设备根据所述相邻时间单元间的资源元素RE映射的偏移量,确定所述SRS资源映射图样。
- 根据权利要求1所述的方法,其特征在于,所述交错信息包括时域重复因子和梳齿数;其中,所述终端设备根据所述第一信息,确定SRS资源映射图样,包括:所述终端设备根据所述时域重复因子和所述梳齿数,计算相邻时间单元间的RE映射的偏移量;所述终端设备根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样。
- 根据权利要求1至3中任一项所述的方法,其特征在于,所述第一信息还包括SRS资源配置信息。
- 根据权利要求4所述的方法,其特征在于,所述SRS资源配置信息中包括所述交错信息。
- 根据权利要求2所述的方法,其特征在于,所述交错信息中还包括梳齿数和时域重复因子。
- 根据权利要求2至6中任一项所述的方法,其特征在于,所述终端设备根据所述相邻时间单元间的RE映射的偏移量,确定SRS资源映射图样,包括:所述终端设备根据以下公式确定SRS资源映射图样:
- 根据权利要求1至7中任一项所述的方法,其特征在于,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
- 根据权利要求8所述的方法,其特征在于,所述交错信息包括交错指示。
- 根据权利要求5所述的方法,其特征在于,所述交错信息包括定位指示。
- 根据权利要求1至10中任一项所述的方法,其特征在于,所述终端设备接收来自网络设备的第一信息,包括:所述终端设备接收来自网络设备的第一信令,所述第一信令包括所述第一信息。
- 根据权利要求1至10中任一项所述的方法,其特征在于,所述终端设备接收来自网络设备的第一信息,包括:所述终端设备接收来自所述网络设备的无线资源控制RRC消息,所述RRC消息包括所述第一信息。
- 一种传输探测参考信号SRS的方法,其特征在于,包括:网络设备确定交错信息,所述交错信息用于确定同一天线端口在不同时间单元上传输的SRS的交错资源的信息;所述网络设备向终端设备发送第一信息,所述第一信息包括所述交错信息,所述第一信息用于所述终端设备确定SRS资源映射图样,其中,所述SRS资源映射图样包括同一天线端口在不同时间单元上传输的SRS信号对应的资源在频域上交错的图样。
- 根据权利要求13所述的方法,其特征在于,所述交错信息包括相邻时间单元间的资源元素RE映射的偏移量。
- 根据权利要求13所述的方法,其特征在于,所述交错信息包括时域重复因子和梳齿数。
- 根据权利要求13至15中任一项所述的方法,其特征在于,所述第一信息还包括SRS资源配置信息。
- 根据权利要求16所述的方法,其特征在于,所述SRS资源配置信息中包括所述交错信息。
- 根据权利要求14所述的方法,其特征在于,所述交错信息中还包括梳齿数和时域重复因子。
- 根据权利要求14或18所述的方法,其特征在于,所述相邻时间单元间的RE映射的偏移量是所述网络设备从定位中心获取的。
- 根据权利要求14、18和19中任一项所述的方法,其特征在于,所述方法还包括:所述网络设备将所述相邻时间单元间的RE映射的偏移量发送给邻区网络设备。
- 根据权利要求13至20中任一项所述的方法,其特征在于,所述交错信息用于指示所述终端设备在频域上交错发送同一天线端口在不同时间单元上传输的SRS信号。
- 根据权利要求13至21中任一项所述的方法,其特征在于,所述网络设备向终端设备发送第一信息,包括:所述网络设备通过第一信令向所述终端设备发送所述第一信息。
- 根据权利要求13至21中任一项所述的方法,其特征在于,所述网络设备向终端设备发送第一信息,包括:所述网络设备向所述终端设备发送无线资源控制RRC消息,所述RRC消息包括所述 第一信息。
- 一种用于传输探测参考信号SRS的通信***,其特征在于,包括:终端设备和网络设备,所述终端设备用于执行如权利要求1至12中任一项所述的方法,所述网络设备用于执行如权利要求13至23中任一项所述的方法。
- 一种传输探测参考信号SRS的装置,其特征在于,所述装置包括:存储器、处理器,所述存储器中存储代码和数据,所述存储器与所述处理器耦合,所述处理器运行所述存储器中的代码使得所述装置执行权利要求1-12任一项所述的传输探测参考信号SRS的方法,或者执行权利要求13-23任一项所述的传输探测参考信号SRS的方法。
- 一种计算机可读存储介质,其上存储有指令,其特征在于,该指令被执行时执行如权利要求1-12中任一项所述的传输探测参考信号SRS的方法,或者执行权利要求13-23任一项所述的传输探测参考信号SRS的方法。
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