WO2018121188A1 - 传输上行测量参考信号的方法、装置和系统 - Google Patents

传输上行测量参考信号的方法、装置和系统 Download PDF

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Publication number
WO2018121188A1
WO2018121188A1 PCT/CN2017/114476 CN2017114476W WO2018121188A1 WO 2018121188 A1 WO2018121188 A1 WO 2018121188A1 CN 2017114476 W CN2017114476 W CN 2017114476W WO 2018121188 A1 WO2018121188 A1 WO 2018121188A1
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Prior art keywords
reference signal
measurement reference
uplink measurement
interference information
downlink interference
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PCT/CN2017/114476
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English (en)
French (fr)
Inventor
张雷鸣
刘江华
刘一樊
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019535882A priority Critical patent/JP6808051B2/ja
Priority to EP17885754.6A priority patent/EP3550907A4/en
Publication of WO2018121188A1 publication Critical patent/WO2018121188A1/zh
Priority to US16/452,892 priority patent/US11246050B2/en

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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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, apparatus, and system for transmitting an uplink measurement reference signal.
  • a wireless channel is a data signal transmission channel that uses a wireless signal as a transmission medium.
  • the uplink channel matrix is a conjugate transpose of the uplink channel matrix.
  • the base station usually obtains the uplink channel matrix by using the uplink measurement reference signal received from the user equipment, and then obtains the downlink channel matrix by using the above reciprocity calculation. The base station then schedules the user equipment and transmits the downlink data according to the downlink channel matrix.
  • the user equipment when receiving downlink data, the user equipment is affected by the interference of surrounding signals and its own thermal noise.
  • the downlink channel matrix obtained by the base station in the prior art cannot reflect the interference information on the user equipment side. Therefore, when the base station schedules the user equipment according to the downlink channel matrix, the efficiency is not high.
  • the present invention describes a method, apparatus and system for transmitting a downlink measurement reference signal for a base station to acquire downlink interference information of a downlink channel.
  • an embodiment of the present invention provides a method for transmitting an uplink measurement reference signal, which is mainly applied to a network side device, and the method includes the following steps:
  • the network side device first receives the uplink measurement reference signal sent by the user equipment, where the uplink measurement reference signal carries the downlink interference information of the downlink channel of the network side device, and then performs downlink interference estimation on the uplink measurement reference signal, thereby obtaining the downlink. Interference information.
  • the network side device (which may be a base station) in this embodiment may perform effective scheduling on the user equipment according to the downlink interference information, thereby improving The scheduling efficiency, in turn, improves the data transmission efficiency of the downlink channel.
  • the uplink measurement reference signal received by the network side device includes an initial first uplink measurement reference signal and a first uplink measurement reference signal with downlink interference information shaping;
  • the network side device performs the downlink interference estimation on the uplink measurement reference signal, and the obtaining the interference information of the downlink channel may include:
  • the product of the downlink interference information I is H*I; and then the downlink interference information I is obtained according to the product H*I of the uplink channel matrix H, the uplink channel matrix H and the downlink interference information I.
  • the uplink measurement reference signal received by the network side device includes a second uplink measurement reference signal formed by using the shaping matrix V and a second uplink after the secondary shaping is performed by using the downlink interference information shaping. Measure the reference signal.
  • the network side device performs the downlink interference estimation on the uplink measurement reference signal, and the obtaining the interference information of the downlink channel may specifically include:
  • Second performing channel estimation on the V-shaped second uplink measurement reference signal obtaining a product H*V of the uplink channel matrix H and V, and performing channel estimation on the second shaped second uplink measurement reference signal.
  • the network side device also sends codebook information to the user equipment, and the codebook information is used to indicate the above-mentioned shaping matrix V used by the user.
  • the network side device may further send an indication message to the user equipment, where the user equipment sends the downlink interference information to the network side device. , thereby coordinating direct messaging between user equipment and network side equipment.
  • the network side device may select one of the downlink interference information to send downlink data to the user equipment.
  • the network side device may send the resource index corresponding to the first uplink measurement reference signal or the second uplink measurement reference signal to the user equipment before transmitting the downlink data.
  • the sending resource index may be used to facilitate the user equipment to determine the receiving shaping matrix V used by the downlink data sent by the network side device.
  • an embodiment of the present application provides a method for transmitting an uplink measurement reference signal, which is applied to a user equipment, and the method mainly includes:
  • the user equipment first obtains downlink interference information of the downlink channel of the network side device, and then sends the downlink interference information to the network side device.
  • the downlink measurement reference signal carries the downlink interference information. Therefore, the network side device can obtain downlink interference information of the downlink channel according to the uplink measurement reference signal, thereby implementing effective scheduling of the user equipment.
  • the user equipment sending the uplink measurement reference signal to the network side device includes:
  • the user equipment first sends a first uplink measurement reference signal to the network side device, and uses the downlink interference information to shape the first uplink measurement reference signal; and then sends the shape to the network side device.
  • the first upstream measurement reference signal is a first upstream measurement reference signal.
  • the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or adjacent time domain resources.
  • the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or adjacent frequency domain resources.
  • the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or different cyclic shifts.
  • the obtaining, by the user equipment, the downlink interference information of the downlink channel of the network side device includes: calculating, by the user equipment, the downlink interference information of the downlink channel of the network side device by using the transmission mode of the transmit diversity or the closed loop spatial multiplexing. .
  • the user equipment can calculate downlink interference information of the downlink channel of the network side device.
  • the user equipment may send uplink signaling, where the uplink signaling carries the transmission mode of the foregoing transmit diversity or closed loop spatial multiplexing.
  • the sending, by the user equipment, the uplink measurement reference signal to the network side device includes:
  • the network side device sends the second uplink measurement reference signal after the secondary shaping.
  • the sending, by the user equipment, the uplink measurement reference signal to the network side device includes:
  • the third uplink measurement reference signal is shaped by using the shaping matrix V, and then the V-shaped third uplink measurement reference signal is secondarily shaped by using the downlink interference information, and sent to the network side device.
  • the third uplink measurement reference signal after the second shaping.
  • the user equipment may receive the resource index or codebook information sent by the network side device, and determine, according to the resource index or the codebook information, the shaping matrix V used for transmitting the uplink measurement reference signal.
  • an embodiment of the present invention provides a user equipment, which mainly includes a transceiver and a processor.
  • the processor is configured to obtain downlink interference information of a downlink channel of the network side device, and the transceiver is configured to send an uplink measurement reference signal to the network side device, where the uplink measurement reference signal carries the downlink interference information.
  • the transceiver of the user equipment sends the uplink measurement reference signal to the network side device, including:
  • the transceiver of the user equipment sends the uplink measurement reference signal to the network side device, including:
  • the network side device Transmitting, to the network side device, a second uplink measurement reference signal that is shaped by using the shaping matrix V; and then performing quadratic shaping on the V-shaped second uplink measurement reference signal by using the downlink interference information,
  • the network side device sends the second uplink measurement reference signal after the secondary shaping.
  • the transceiver of the user equipment is further configured to receive the codebook information sent by the network side device before sending the second uplink measurement reference signal that is shaped by using the shaping matrix V to the network side device.
  • the processor is further configured to acquire the shaping matrix V according to the codebook information.
  • the transceiver of the user equipment is further configured to: before the obtaining, by the processor, the downlink interference information of the downlink channel of the network side device, receive an indication message sent by the network side device, where the indication message is used to indicate The user equipment sends the downlink interference information to the network side device.
  • the transceiver of the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information by using the same or adjacent time domain resources, or
  • the transceiver of the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or different cyclic shifts.
  • time domain resources, frequency domain resources and cyclic shifts can be used in combination.
  • the transceiver of the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same time domain resource and different cyclic shifts.
  • the user equipment may also use the foregoing time domain resource, the frequency domain resource, and the cyclic shift to send the second uplink measurement reference signal shaped by the shaping matrix V and the second uplink measurement reference signal after the secondary shaping.
  • an embodiment of the present invention provides a network side device, which mainly includes a transceiver and a processor.
  • a transceiver configured to receive an uplink measurement reference signal sent by the user equipment, where the uplink measurement reference signal carries downlink interference information of a downlink channel of the network side device;
  • a processor configured to perform downlink interference estimation on the uplink measurement reference signal, to obtain the downlink interference information.
  • the uplink measurement reference signal received by the transceiver of the network side device includes an initial a first uplink measurement reference signal and a first uplink measurement reference signal shaped with downlink interference information;
  • the processor of the network device performs downlink interference estimation on the uplink measurement reference signal, and obtaining interference information of the downlink channel includes: performing channel estimation on the initial first uplink measurement reference signal to obtain an uplink channel matrix H;
  • the first uplink measurement reference signal shaped by the downlink interference information is used for channel estimation, and the product HI of the uplink channel matrix H and the downlink interference information I is obtained, thereby obtaining the location according to the uplink channel matrix H and the product HI. Describe the downlink interference information.
  • the transceiver of the network side device is further configured to send an indication message to the user equipment to indicate the user equipment to the network side device before receiving the uplink measurement reference signal sent by the user equipment. Sending the downlink interference information.
  • the uplink measurement reference signal received by the transceiver of the network side device includes a second uplink measurement reference signal shaped using the shaping matrix V and a second shape formed by using the downlink interference information.
  • the uplink measurement reference signal is used for the second uplink measurement reference signal; the processor of the network side device performs the downlink interference estimation on the uplink measurement reference signal, and the obtaining the interference information of the downlink channel specifically includes:
  • an embodiment of the present invention provides a system for transmitting an uplink measurement reference signal, which includes the user equipment according to the third aspect, and the network side device according to the fourth aspect.
  • the indication message sent by the network side device may be used to indicate that the user equipment sends the initial first uplink measurement reference signal to the network side device simultaneously or together and the first uplink with the downlink interference information shaping Measure the reference signal.
  • the indication message sent by the network side device may be used to indicate that the user equipment sends the V-shaped second uplink measurement reference signal to the network side device simultaneously or together, and uses the downlink interference information to perform the second uplink after the secondary shaping Measure the reference signal.
  • the indication message may be uplink measurement reference signal scheduling signaling.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for transmitting an uplink measurement reference signal according to an embodiment of the present invention
  • FIG. 3 is a resource configuration diagram of a UE transmitting an uplink measurement reference signal according to an embodiment of the present invention
  • FIG. 4 is another resource configuration diagram of a UE transmitting an uplink measurement reference signal according to an embodiment of the present invention
  • FIG. 5 is another resource configuration diagram of a UE transmitting an uplink measurement reference signal according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • an embodiment of the present invention provides a solution based on the communication system shown in FIG. 1 to improve communication. Scheduling efficiency of user equipment in the system.
  • the communication system 100 includes at least one base station (BS) and user equipment (UE).
  • the figure shows a plurality of base stations of BS1-BS3 and a plurality of user equipments of UE1-UE6.
  • the user equipment and the base station can perform cellular communication, the UE1-UE2 is in the coverage of the BS3, the UE3-UE4 is in the coverage of the BS1, and the UE5-UE6 is in the coverage of the BS2.
  • the communication system 100 may be a variety of radio access technology (RAT) systems, such as code division multiple access (CDMA), time division multiple access (time division multiple access) , TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA) and Other systems, etc.
  • RAT radio access technology
  • CDMA code division multiple access
  • time division multiple access time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA system can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • the various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA.
  • the communication system 100 can also be adapted for future-oriented communication technologies.
  • a base station (for example, BS1-BS3) is a device deployed in a radio access network to provide a wireless communication function for a UE.
  • the base station may include various forms of macro base stations, also known as small stations (also known as femeto, pico, small cells), relay stations, access points, and the like.
  • macro base stations also known as small stations (also known as femeto, pico, small cells), relay stations, access points, and the like.
  • TRP transmission point
  • an evolved NodeB eNB or eNodeB
  • 3G 3rd generation
  • the foregoing base station, Node B, and other devices that provide wireless communication functions for the UE are collectively referred to as network side devices.
  • the UE involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem.
  • the UE may also be referred to as a mobile station (MS), a user equipment, a terminal equipment, and may also include a subscriber unit, a cellular phone, and a smart phone ( Smart phone), wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld, laptop computer, cordless phone ) or wireless local loop (WLL) station, machine type communication (MTC) user equipment, and the like.
  • MS mobile station
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine type communication
  • the communication system 100 may not be limited to include the base station and the UE, and may also include a core network.
  • Devices or devices for carrying virtualized network functions, etc., will be apparent to those of ordinary skill in the art and will not be described in detail herein.
  • the UE1 when the UE1 receives the downlink data of the BS3, the radio signals transmitted by other base stations (for example, BS1, BS2) may interfere with the downlink data reception of the UE1.
  • the UE1 in the embodiment of the present invention directly sends an uplink measurement reference signal to the network side device (for example, BS3), where the uplink measurement reference signal carries the downlink interference information.
  • the network side device for example, the BS3
  • the network side device for example, the BS3 performs downlink interference estimation on the uplink measurement reference signal, Downlink interference information.
  • the BS3 in this embodiment can perform effective scheduling on the UE1 according to the downlink interference information, thereby improving scheduling efficiency and data transmission efficiency.
  • FIG. 2 is a flowchart of a method for transmitting an uplink measurement reference signal according to an embodiment of the present invention.
  • the base station (for example, BS3) provides a cellular network for the user equipment (for example, UE1), and the UE1 is currently in a connected mode.
  • the user equipment for example, UE1
  • the UE1 may start performing the step of transmitting downlink interference information to the BS3 after receiving the indication message of the base station BS3 (step 102).
  • the UE1 may also actively send downlink interference information to the BS3 when in the connected state.
  • the UE1 can periodically send downlink interference information to the BS3, so that the BS3 can receive the downlink interference information.
  • the UE1 Before transmitting the downlink interference information to the BS3, the UE1 first acquires the downlink interference information of the downlink channel of the BS3 (step 104), and then sends the uplink measurement reference signal that carries the downlink interference information to the BS3.
  • UE1 may calculate downlink interference information based on a specific transmission mode, such as transmit diversity or closed-loop spatial multiplexing, and the downlink interference information may correspond to a specific transmission mode. After obtaining the downlink interference information based on the specific transmission mode, UE1 may notify the base station BS3 of the transmission mode.
  • the UE1 may send the determined transmission mode to the BS3 by using the added uplink signaling or by using the uplink measurement reference signal, and the base station BS3 may use the transmission mode determined by the UE1 to send downlink data, and the data transmission efficiency is higher.
  • the UE1 may not calculate the downlink interference information based on the specific mode, and send the downlink interference information to the base station BS3, and the base station BS3 may obtain the downlink interference information that has not been processed.
  • the UE1 may obtain the downlink interference information of the downlink channel before receiving the indication message of the BS3, and may also acquire the downlink channel after receiving the indication message of the BS3. Downlink interference information.
  • UE1 may send an uplink measurement reference signal to BS3 in the following manner.
  • the UE1 sends an initial first uplink measurement reference signal to the BS3, and uses the downlink interference information obtained in step 102 to shape the initial first uplink measurement reference signal, and then sends the shaped to the BS3.
  • the first uplink measurement reference signal is the first uplink measurement reference signal.
  • the uplink measurement reference signal may also be referred to as an uplink sounding reference signal (SRS), which may be a standard sequence, such as a Zad-off Chu sequence.
  • SRS uplink sounding reference signal
  • the initial first uplink measurement reference signal may also be referred to as a first uplink measurement reference signal without downlink interference shaping, and the purpose of the foregoing “first” is to distinguish from the subsequent “second”.
  • the shaping method can be beamforming or modulation.
  • the UE1 sends a second uplink measurement reference signal shaped by using the shaping matrix V to the BS3, and then performs secondary shaping on the V-shaped second uplink measurement reference signal by using the downlink interference information, and then sends the second uplink measurement reference signal to the BS3.
  • Quadratic shape The second upstream measurement reference signal.
  • the shaping matrix V may be derived from the codebook information (which may be referred to as a codebook) transmitted by the BS3, and the UE1 obtains the shaping matrix V according to the codebook information.
  • the UE1 may perform channel estimation on the downlink channel of the base station BS3, obtain a downlink channel matrix, and then calculate the shaping matrix V using the downlink channel matrix. For example, singular value decomposition (SVD) decomposition is performed on the downlink channel matrix.
  • SVD singular value decomposition
  • the second uplink measurement reference signal of the V-shaped shape may also be referred to as a second uplink measurement reference signal without downlink interference shaping, and the second uplink measurement reference signal after the second shaping may also be referred to as downlink interference information shaping.
  • the second upstream measurement reference signal Compared with the foregoing manner 1a, the method for the second uplink measurement reference signal provided by the mode 2a can improve the coverage of the uplink measurement reference signal sent by the UE1, improve the signal to interference and noise ratio of the uplink measurement reference signal received by the BS3, or be the same. Under the condition of the signal to interference and noise ratio, the power of the uplink measurement reference signal sent by the UE1 is reduced, and the power consumption of the UE1 is saved.
  • the first uplink measurement reference signal and the second uplink measurement reference signal are used by the UE1.
  • the signal can carry the downlink interference information.
  • the UE1 may send the V-shaped second uplink measurement reference signal and the second-shaped second uplink measurement reference signal by using a specific resource, such as a subframe.
  • the UE1 may send the first uplink measurement reference signal without the downlink interference shaping and the first uplink measurement reference signal after the downlink interference information shaping by using the composite signal, or may separately send the first downlink-free interference shaping.
  • the uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped.
  • the UE1 can also send the second uplink measurement reference signal without the downlink interference shaping and the second uplink measurement reference signal after the downlink interference information is shaped by the composite signal, or separately transmit the above-mentioned no downlink interference reference. And forming a second uplink measurement reference signal and a second uplink measurement reference signal after shaping the downlink interference information.
  • the base station BS3 when the base station BS3 needs to acquire the downlink interference information of the UE1 (for example, when the BS3 needs to send the downlink data to the UE1), the base station BS3 sends an indication message to the UE1 (step 102), instructing the UE1 to send the downlink interference information to the BS3.
  • the indication message sent by the BS3 may specifically be an uplink measurement reference signal scheduling signaling, and the indication message may also be through a physical layer signaling, a radio resource control layer signaling, or a medium access control control element (MACCE) layer. Signaling to send.
  • MACCE medium access control control element
  • the BS3 may also determine a transmission mode corresponding to the downlink interference information, such as transmit diversity or closed-loop spatial multiplexing, and then notify the UE1 of the determined transmission mode.
  • the BS3 may carry the determined transmission mode in the foregoing indication message and send it to the UE1, and may also add the downlink signaling to the UE1, and may also be configured in advance to the UE1, and the UE1 obtains the downlink of the corresponding transmission mode according to the transmission mode determined by the BS3. Interference information.
  • the BS3 After transmitting the foregoing indication message, the BS3 receives the uplink measurement reference signal that is sent by the UE1 and carries the downlink interference information (step 106). The BS3 performs downlink interference estimation on the received uplink measurement reference signal to obtain downlink interference information (step 108), and then the BS3 can schedule the UE1 according to the downlink interference information, and then send the downlink data to the UE1.
  • step 108 BS3 can obtain downlink interference information by the following manner.
  • the method 1b and the BS3 perform channel estimation on the first uplink measurement reference signal that is not shaped by the downlink interference information, obtain an uplink channel matrix H, and perform channel estimation on the first uplink measurement reference signal that is shaped by the downlink interference information, to obtain the uplink.
  • the product of the channel matrix H and the downlink interference information I is H*I; then the downlink interference information is obtained according to the uplink channel matrix H and the product HI.
  • the BS3 shapes the received downlink interference-free information.
  • the first uplink measurement reference signal performs channel estimation to obtain a matrix H of the uplink channel.
  • the BS3 also performs channel estimation on the first uplink measurement reference signal shaped by the downlink interference information, and obtains a product H*I of the uplink channel matrix H and the downlink interference information I.
  • BS3 further obtains downlink interference information I according to the product of H*I and the matrix H of the uplink channel.
  • BS3 performs channel estimation on the V-shaped second uplink measurement reference signal, obtains a product HV of the uplink channel matrix H and V; performs channel estimation on the second-shaped second uplink measurement reference signal to obtain an uplink channel matrix.
  • the product of H, V and the downlink interference information is then obtained according to the product of the HV and the HV and the downlink interference information.
  • the UE1 transmits a second uplink measurement reference signal shaped using the shaping matrix V and a second second shape of the V-shaped second uplink measurement reference signal using the downlink interference information.
  • the uplink measures the reference signal, and thus the BS3 performs channel estimation on the received second uplink measurement reference signal that is shaped without the downlink interference information, and obtains the product H*V of the matrix H of the uplink channel and the shaping matrix V.
  • the BS3 also performs channel estimation on the second uplink measurement reference signal shaped with the downlink interference information, and obtains a product H*V*I of the uplink channel matrix H, the shaping matrix V, and the downlink interference information I.
  • BS3 can obtain downlink interference information I according to the product of H*V*I and H*V.
  • the channel estimation method adopted by the base station BS3 may be, for example, a minimum mean square error (MMSE).
  • MMSE minimum mean square error
  • the UE1 may send the first uplink measurement reference signal and the downlink interference that are not shaped by the downlink interference information by using the same or adjacent time domain resources.
  • the first uplink measurement reference signal after the information is shaped, or the UE1 uses the same or adjacent frequency domain resources to send the first uplink measurement reference signal shaped by the downlink interference information and the downlink interference information shaping First uplink test Quantity reference signal.
  • the UE1 may also use the same or different cyclic shift to transmit the first uplink measurement reference signal that is not shaped by the downlink interference information and the first uplink measurement reference signal that is shaped by the downlink interference information.
  • time domain resources, frequency domain resources, and cyclic shifts may be used in combination, for example, UE1 uses the same time domain resources and adjacent frequency domain resources, the same time domain resources, and different cyclic shifts to transmit no downlink interference. And a first uplink measurement reference signal that is shaped by the information and the first uplink measurement reference signal that is shaped by the downlink interference information.
  • the foregoing only provides a first uplink measurement reference signal without downlink interference information shaping and a method for transmitting a first uplink measurement reference signal after shaping the downlink interference information, where the foregoing time domain resource is transmitted,
  • the transmission method of the frequency domain resource and the cyclic shift can also be applied to the V-shaped second uplink measurement reference signal and the second uplink measurement reference signal for performing secondary shaping using the downlink interference information.
  • FIG. 3 is a resource configuration diagram of UE1 transmitting an uplink measurement reference signal according to an embodiment of the present invention.
  • the UE1 sends no downlink interference information shaping on the same time domain resource, such as a sub-frame, the same frequency domain resource, such as a cluster, and a different cyclic shift.
  • the first uplink measurement reference signal SRS 1 ( ⁇ 1 ) and the first uplink measurement reference signal SRS 2 ( ⁇ 2 ) shaped with the downlink interference information, thereby ensuring two signals SRS 1 ( ⁇ 1 ) and The orthogonality of SRS 2 ( ⁇ 2 ).
  • the sequence of SRS 1 ( ⁇ 1 ) may be e j ⁇ 1n F(n), and the sequence of SRS 2 ( ⁇ 2 ) may be e j ⁇ 2n F(n).
  • SRS 1 ( ⁇ 1 ) and SRS 2 ( ⁇ 2 ) may be located in the same cluster.
  • SRS 1 ( ⁇ 1 ) may also represent a second uplink measurement reference signal shaped by the shaping matrix V
  • SRS 2 ( ⁇ 2 ) may also represent a second uplink measurement reference signal shaped with downlink interference information.
  • FIG. 4 also shows another alternative resource configuration diagram in which the UE transmits an uplink measurement reference signal.
  • the UE transmits the first uplink measurement reference signal SRS 1 without downlink interference information shaping on the same time domain resource, for example, a sub-frame, a different cluster (for example, an adjacent cluster), and the foregoing
  • the first uplink measurement reference signal SRS 2 after the downlink interference information is shaped, thereby ensuring the orthogonality of the two signals SRS 1 and SRS 2 .
  • the SRS 1 may also represent a second uplink measurement reference signal shaped by the shaping matrix V
  • the SRS 2 may also represent a second uplink measurement reference signal with downlink interference information shaping.
  • the horizontal axis is time (subframe), and the left oblique line filling and the right oblique line filling respectively indicate different clusters.
  • FIG. 5 also shows another alternative resource configuration diagram in which the UE transmits an uplink measurement reference signal.
  • the UE transmits the first uplink measurement reference signal SRS 1 without downlink interference information and the first shape after the downlink interference information is formed on the same sub-frame and different symbols.
  • the uplink measurement reference signal SRS 2 ensures the orthogonality of the two signals SRS 1 and SRS 2 and further increases the accumulated power of the uplink measurement reference signal transmission.
  • the SRS 1 may also represent a second uplink measurement reference signal shaped by the shaping matrix V, and the SRS 2 may also represent a second uplink measurement reference signal shaped by the downlink interference information.
  • the SRS1 and the SRS 2 may use the same or different frequency domain resources, which is not limited in this embodiment.
  • the horizontal axis is time (subframe), and the left oblique line filling and the right oblique line filling respectively indicate different symbols.
  • the UE1 can periodically send the uplink measurement reference signal, for example, once in 2 subframes.
  • the UE1 may also send multiple uplink measurement reference signals with different uses (for example, when the UE1 is at the cell edge or the cell center position, respectively, send an uplink measurement reference signal), for example, the first subframe sends the shaping matrix V1 to form a second shape.
  • the base station BS3 may select one of the uplink measurement reference signals for channel and interference estimation (for example, selecting a V2 shaped second uplink measurement reference signal transmitted by the fourth subframe and a second uplink measurement having downlink interference information and V2 secondary shaping).
  • the reference signal further determines the shaping mode and the modulation and coding scheme (MCS) level of the BS3 in performing downlink data transmission.
  • MCS modulation and coding scheme
  • the shaping matrix V2 when the UE1 sends the second uplink measurement reference signal, the shaping matrix V2 is used, and when the UE1 receives the downlink data, the shaping matrix V2 may also receive the data.
  • the base station may indicate the V2 through the codebook information (which may be referred to by the codebook information mentioned in the above 2a) to the UE1, and the UE1 obtains the shaping matrix V2 according to the codebook information.
  • the BS3 may further notify the UE1 of the resource index of the second uplink measurement reference signal (the uplink measurement reference signal may be understood as a resource), and the UE1 determines the corresponding V2 shaped second uplink measurement reference signal according to the resource index, so as to obtain the transmission.
  • the second uplink measurement reference signal uses a shaping matrix V2.
  • the UE1 transmits one type of uplink measurement reference signal, for example, the second uplink measurement reference signal shaped by the first subframe transmission shaping matrix V1 and the second uplink measurement with the downlink interference information and the V1 secondary shaping
  • the fourth sub-frame transmits a second uplink measurement reference signal shaped by the shaping matrix V1 and a second uplink measurement reference signal with downlink interference information and V1 secondary shaping.
  • the BS3 may not instruct the terminal to receive the shaping information, and the transmitting and receiving antennas of the UE1 may receive the same shaping to receive the downlink data of the BS1.
  • the transmitting and receiving antennas of the UE1 can also maintain the same shape to receive the downlink data of the BS1.
  • the uplink measurement reference signal transmission method provided by the embodiment of the present invention is introduced from the perspective of interaction between the user equipment and the base station itself, and the user equipment and the base station.
  • each network element such as a user equipment, a base station, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is executed by hardware or computer software to drive hardware depends on the technical solution. Apply application and design constraints. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 6 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • the network side device may be the base stations BS1, BS2, and BS3 as shown in FIG. 1-2.
  • an embodiment of the present invention provides a network side device, which mainly includes a transceiver 601 and a processor 602 (which may also be referred to as a controller). Further, the network side device may further include a memory 603.
  • the transceiver 601 is mainly used for the network side device to receive and send signals, for example, receiving an uplink measurement reference signal sent by the user equipment, where the uplink measurement reference signal carries downlink interference information of the downlink channel of the network side device;
  • the processor 602 is mainly used for performing control and management on the network side device, for example, performing downlink interference estimation on the uplink measurement reference signal received by the transceiver 601, and obtaining the downlink interference information.
  • the controller/processor 602 is configured to support the method steps of the network side device implementing the side of the base station BS3 in FIG. 2, such as step 108.
  • the memory 603 is for storing program codes and data for the network side device.
  • the uplink measurement reference signal received by the transceiver 601 of the network side device includes an initial first uplink measurement reference signal and a first uplink measurement reference signal shaped by the downlink interference information.
  • the processor 602 of the network device performs downlink interference estimation on the uplink measurement reference signal, and the interference information of the downlink channel is obtained by referring to the related description of the method 1b in the foregoing method embodiment, and details are not described herein again.
  • the uplink measurement reference signal received by the transceiver 601 of the network side device includes a second uplink measurement reference signal shaped by using the shaping matrix V and a second uplink measurement formed by using the downlink interference information.
  • the reference signal is used for the second uplink measurement reference signal, and the processor of the network side device performs the downlink interference estimation on the uplink measurement reference signal, and the interference information of the downlink channel is obtained by referring to the manner in the foregoing method embodiment.
  • the related description of 2b will not be described here.
  • the transceiver 601 of the network side device is further configured to: before receiving the uplink measurement reference signal sent by the user equipment, send an indication message to the user equipment, where the user equipment is sent to the network side device Describe the downlink interference information.
  • Figure 6 only shows a simplified design of the network side device.
  • the network side device may include any number of transmitters, receivers, processors, controllers, modulators, memories, etc., and all network side devices that can implement the present invention are within the scope of the present invention. .
  • FIG. 7 is a schematic diagram showing a possible structure of a user equipment according to an embodiment of the present invention.
  • the user equipment may be the base stations UE1-UE6 as shown in FIG. 1-2.
  • the user equipment provided in this embodiment mainly includes: a transceiver 701 and a processor 702 (which may also be referred to as a controller).
  • the user equipment may also include a memory 703.
  • the processor 702 is mainly used for performing control and management on the user equipment, for example, acquiring downlink interference information of a downlink channel of the network side device.
  • the transceiver 701 is mainly used for the user equipment to receive and send a signal, for example, to send an uplink measurement reference signal to the network side device, where the uplink measurement reference signal carries the downlink interference information.
  • the controller/processor 702 is configured to support the user equipment to implement the method steps of the UE1 side of FIG. 2, such as step 104.
  • the memory 703 is for storing program codes and data for the user equipment.
  • the transceiver 701 of the user equipment sends the uplink measurement reference signal to the network side device, and the related description of the method 1a or 2a in the foregoing method is used, and details are not described herein.
  • the transceiver 701 of the user equipment may send the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information by using the same or adjacent time domain resources.
  • the transceiver 701 of the user equipment may also send the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or adjacent frequency domain resources.
  • the transceiver 701 of the user equipment may also transmit the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same or different cyclic shifts.
  • the transceiver 701 of the user equipment may also send the initial first uplink measurement reference signal and the first uplink measurement reference signal after the downlink interference information is shaped by using the same time domain resource and different cyclic shifts. For a specific transmission process, reference may be made to the related description of FIG. 3-5.
  • the transceiver 701 of the user equipment is further configured to: before sending the second uplink measurement reference signal that is shaped by using the shaping matrix V, to the network side device, receive the codebook information sent by the network side device, where The processor 702 is further configured to acquire the shaping matrix V according to the codebook information.
  • the transceiver 701 of the user equipment is further configured to: before the obtaining, by the processor 702, the downlink interference information of the downlink channel of the network device, the indication message sent by the network side device, where the indication message is used to indicate The user equipment sends the downlink interference information to the network side device.
  • the indication message sent by the network side device may be used to indicate that the user equipment sends the initial first uplink measurement reference signal and the first uplink measurement reference signal shaped by the downlink interference information to the network side device simultaneously or together.
  • the indication message may also be used to indicate that the user equipment sends the V-shaped second uplink measurement reference signal to the network side device simultaneously or together and the second uplink measurement reference signal after the secondary shaping is performed by using the downlink interference information.
  • the indication message may be uplink measurement reference signal scheduling signaling.
  • Figure 7 only shows a simplified design of the user equipment.
  • the user equipment may include any number of transmitters, receivers, processors, controllers, modulators, memories, displays, etc., and all user equipments that can implement the present invention are within the scope of the present invention. .
  • the embodiment of the present invention further provides a system for transmitting an uplink measurement reference signal, which includes the user equipment and the network side device as described in the foregoing embodiments.
  • an uplink measurement reference signal which includes the user equipment and the network side device as described in the foregoing embodiments.
  • the steps of the method or algorithm described in connection with the disclosure of the embodiments of the present invention may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules, which may be stored in a memory, flash memory, read only memory, registers, hard disk, mobile hard disk, optical disk, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the user equipment.
  • the processor and the storage medium may also reside as discrete components in the user equipment.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

本发明公开一种传输上行测量参考信号的方法，主要应用于网络侧设备，该方法包括如下的步骤：网络侧设备首先接收用户设备发送的上行测量参考信号，该上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息，然后对上行测量参考信号进行下行干扰估计，进而获得所述下行干扰信息。与现有技术中基站无法获取用户设备使用的下行信道的下行干扰信息相比，网络侧设备可根据该下行干扰信息对用户设备进行有效调度，提高了调度效率，进而提高了下行信道的数据传输效率。

Description

传输上行测量参考信号的方法、装置和系统
本申请要求于2016年12月30日提交中国专利局、申请号为201611265950.2、发明名称为“传输上行测量参考信号的方法、装置和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种传输上行测量参考信号的方法、装置和系统。
背景技术
无线信道(Channel)是以无线信号作为传输媒体的数据信号传送通道。在无线通信领域，同一频段的上行(用户设备到基站方向)信道和下行(基站到用户设备方向)信道之间具备互易性，即上行信道矩阵是上行信道矩阵的共轭转置。
在现有技术的通信系统中，基站通常利用从用户设备接收到的上行测量参考信号获得上行信道矩阵，然后利用上面的互易性计算获得下行信道矩阵。基站然后根据该下行信道矩阵来对用户设备进行调度并发送下行数据。
但是，用户设备在接收下行数据时，会受到周围信号的干扰和本身热噪声的影响。现有技术中基站获得的下行信道矩阵无法反映用户设备侧的干扰信息，因而基站根据下行信道矩阵来对用户设备进行调度时的效率不高。
发明内容
本发明描述了一种便于基站获取下行信道的下行干扰信息的传输上行测量参考信号的方法、装置和系统。
一方面，本发明的实施例提供一种传输上行测量参考信号的方法，主要应用于网络侧设备，该方法包括如下的步骤：
网络侧设备首先接收用户设备发送的上行测量参考信号，该上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息，然后对上行测量参考信号进行下行干扰估计，进而获得所述下行干扰信息。
与现有技术中基站无法获取用户设备使用的下行信道的下行干扰信息相比，本实施例中的网络侧设备(可以为基站)可根据该下行干扰信息对用户设备进行有效调度，提高了 调度效率，进而提高了下行信道的数据传输效率。
在一个可能的设计中，网络侧设备接收到的上行测量参考信号中包括初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号；
网络侧设备对上行测量参考信号进行下行干扰估计，获得下行信道的干扰信息具体可以包括：
首先对所述初始的第一上行测量参考信号进行信道估计，获得上行信道矩阵H；并对所述有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得所述上行信道矩阵H和所述下行干扰信息I的乘积H*I；然后根据所述上行信道矩阵H、所述上行信道矩阵H和下行干扰信息I的乘积H*I来计算获得所述下行干扰信息I。
在一个可能的设计中，网络侧设备接收到的上行测量参考信号中包括使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息赋形进行二次赋形后的第二上行测量参考信号。此时，网络侧设备对所述上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息具体可以包括：
首先对所述V赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H和V的乘积H*V，并对所述二次赋形后的第二上行测量参考信号进行信道估计，获得所述上行信道矩阵H、V和所述下行干扰信息I的乘积H*V*I；然后根据所述H*V、以及所述HV与下行干扰信息I的乘积H*V*I来获得所述下行干扰信息。
在一个可能的设计中，网络侧设备还向用户设备发送码本信息，码本信息用于指示该用户使用的上述赋形矩阵V。
在一个可能的设计中，所述网络侧设备在接收用户设备发送的上行测量参考信号之前，还可以向所述用户设备发送指示消息，用于指示用户设备向网络侧设备发送所述下行干扰信息，从而协调用户设备和网络侧设备直接的消息传递。
在一个可能的设计中，网络侧设备可以在获得两个或两个以上的下行干扰信息后，选择其中一个下行干扰信息向用户设备发送下行数据。网络侧设备可以在发送下行数据之前，向用户设备发送所述第一上行测量参考信号或第二上行测量参考信号对应的资源索引。其中，发送资源索引可以用于便于用户设备确定接收网络侧设备发送的下行数据所使用的接收赋形矩阵V。
另一方面，本申请的实施例提供一种传输上行测量参考信号的方法，应用于用户设备，该方法主要包括：
用户设备先获取网络侧设备下行信道的下行干扰信息；然后向所述网络侧设备发送上 行测量参考信号，所述上行测量参考信号中携带所述下行干扰信息。从而网络侧设备可以根据上行测量参考信号获得下行信道的下行干扰信息，进而实现对用户设备的有效调度。
在一个可能的设计中，用户设备向所述网络侧设备发送上行测量参考信号包括：
用户设备首先向所述网络侧设备发送第一上行测量参考信号，并使用所述下行干扰信息对所述第一上行测量参考信号进行赋形；然后向所述网络侧设备发送所述赋形后的第一上行测量参考信号。
在一个可能的设计中，所述用户设备使用相同或相邻的时域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
在一个可能的设计中，所述用户设备使用相同或相邻的频域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
在一个可能的设计中，所述用户设备使用相同或不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
在一个可能的设计中，所述用户设备获得网络侧设备下行信道的下行干扰信息具体包括：所述用户设备使用发送分集或闭环空间复用的传输模式计算得到网络侧设备下行信道的下行干扰信息。可选的，用户设备可以计算网络侧设备下行信道的下行干扰信息。
在一个可能的设计中，用户设备可以网络侧设备发送上行信令，该上行信令中携带上述发送分集或闭环空间复用的传输模式。
在一个可能的设计中，所述用户设备向所述网络侧设备发送上行测量参考信号包括：
首先向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号；然后使用所述下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形，向所述网络侧设备发送所述二次赋形后的第二上行测量参考信号。
在一个可能的设计中，所述用户设备向所述网络侧设备发送上行测量参考信号包括：
首先使用赋形矩阵V对第三上行测量参考信号进行赋形，然后使用所述下行干扰信息对所述V赋形的第三上行测量参考信号进行二次赋形，向所述网络侧设备发送所述二次赋形后的第三上行测量参考信号。
在一个可能的设计中，用户设备可以接收所述网络侧设备发送的资源索引或码本信息，根据所述资源索引或码本信息确定发送上行测量参考信号所使用的赋形矩阵V。
第三方面，本发明实施例提供一种用户设备，其主要包括收发器和处理器。其中，处理器用于获取网络侧设备下行信道的下行干扰信息；收发器，用于向所述网络侧设备发送上行测量参考信号，所述上行测量参考信号中携带所述下行干扰信息。
在一个可能的设计中，用户设备的收发器向网络侧设备发送上行测量参考信号包括：
向所述网络侧设备发送初始的第一上行测量参考信号；然后使用所述下行干扰信息对所述初始的第一上行测量参考信号进行赋形，向所述网络侧设备发送所述下行干扰信息赋形后的第一上行测量参考信号。
在一个可能的设计中，用户设备的收发器向网络侧设备发送上行测量参考信号包括：
向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号；然后使用所述下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形，向所述网络侧设备发送所述二次赋形后的第二上行测量参考信号。
在一个可能的设计中，用户设备的收发器还用于在向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号之前，接收所述网络侧设备发送的码本信息，所述处理器还用于根据所述码本信息获取所述赋形矩阵V。
在一个可能的设计中，用户设备的收发器还用于在所述处理器获得网络侧设备下行信道的下行干扰信息之前，接收所述网络侧设备发送的指示消息，所述指示消息用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
在一个可能的设计中，用户设备的收发器使用相同或相邻的时域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息后的第一上行测量参考信号，或者
用户设备的收发器使用相同或相邻的频域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号；或者
用户设备的收发器使用相同或不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
其中，时域资源、频域资源和循环移位可以组合使用。例如，用户设备的收发器使用相同的时域资源和不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
可选的，用户设备也可以使用上述时域资源、频域资源和循环移位来发送赋形矩阵V赋形的第二上行测量参考信号和二次赋形后的第二上行测量参考信号。
第四方面，本发明实施例提供一种网络侧设备，其主要包括收发器和处理器。
收发器，用于接收用户设备发送的上行测量参考信号，所述上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息；
处理器，用于对所述上行测量参考信号进行下行干扰估计，获得所述下行干扰信息。
在一个可能的设计中，网络侧设备的收发器接收到的上行测量参考信号中包括初始的 第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号；
网络设备的处理器对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息包括：对所述初始的第一上行测量参考信号进行信道估计，获得上行信道矩阵H；然后对所述有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得所述上行信道矩阵H和所述下行干扰信息I的乘积HI，从而根据所述上行信道矩阵H和所述乘积HI获得所述下行干扰信息。
在一个可能的设计中，网络侧设备的收发器还用于在接收用户设备发送的上行测量参考信号之前，向所述用户设备发送指示消息，用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
在一个可能的设计中，网络侧设备的收发器接收到的上行测量参考信号中包括使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形的第二上行测量参考信号；所述网络侧设备的处理器对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息具体包括：
对所述V赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H和V的乘积HV，然后对所述二次赋形后的第二上行测量参考信号进行信道估计，获得所述上行信道矩阵H、V和所述下行干扰信息的乘积，从而根据所述HV、以及所述HV与下行干扰信息的乘积获得所述下行干扰信息。
第五方面，本发明实施例提供一种传输上行测量参考信号的系统，其包括如上第三方面所述的用户设备以及第四方面所述的网络侧设备。
在以上所有方面描述的实施例中，网络侧设备发送的指示消息可以用于指示用户设备向网络侧设备同时或一起发送初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号。
所述网络侧设备发送的指示消息可以用于指示用户设备向网络侧设备同时或一起发送V赋形的第二上行测量参考信号以及使用下行干扰信息赋形进行二次赋形后的第二上行测量参考信号。所述指示消息可以为上行测量参考信号调度信令。
附图说明
为了更清楚地说明本发明实施例，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1为本发明实施例提供的一种通信系统示意图；
图2是本发明实施例提供的传输上行测量参考信号的方法的流程图；
图3是本发明实施例中UE发送上行测量参考信号的一种资源配置图；
图4是本发明实施例中UE发送上行测量参考信号的另一种资源配置图；
图5是本发明实施例中UE发送上行测量参考信号的另一种资源配置图；
图6是本发明实施例提供的网络侧设备的结构示意图；
图7是本发明实施例提供的用户设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
为了解决现有技术中基站无法获取下行干扰信息，进而对用户设备进行调度时效率不高的问题，本发明实施例基于图1所示的通信系统中提出了一种解决方案，用以提高通信系统中用户设备的调度效率。如图1所示，本发明实施例提供了一种通信系统100。该通信系统100包括至少一个基站(base station，BS)和用户设备(user equipment，UE)。图中示出了BS1-BS3多个基站以及UE1-UE6多个用户设备。其中，用户设备和基站可以进行蜂窝通信，UE1-UE2处于BS3的覆盖范围，UE3-UE4处于BS1的覆盖范围，UE5-UE6处于BS2的覆盖范围。
在本发明实施例中，上述通信系统100可以为各种无线接入技术(radio access technology，RAT)系统，例如码分多址(code division multiple access，CDMA)、时分多址(time division multiple access，TDMA)、频分多址(frequency division multiple access，FDMA)、正交频分多址(orthogonal frequency-division multiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。CDMA系统可以实现例如通用无线陆地接入(universal terrestrial radio access，UTRA)，CDMA2000等无线技术。UTRA可以包括宽带CDMA(wideband CDMA，WCDMA)技术和其它CDMA变形的技术。CDMA2000可以覆盖过渡标准(interim standard，IS)2000(IS-2000)，IS-95和IS-856标准。TDMA系统可以实现例如全球移动通信系统(global system for mobile communication，GSM)等无线技术。OFDMA系统可以实现诸如演进通用无线陆地接入(evolved UTRA，E-UTRA)、超级移动宽带(ultra mobile broadband，UMB)、IEEE 802.11(Wi-Fi)，IEEE 802.16(WiMAX)，IEEE 802.20，Flash OFDMA等无线技术。UTRA和E-UTRA是UMTS以及UMTS演进版本。3GPP在长期演进(long term evolution，LTE)和基于LTE演进的各种版本是使用E-UTRA的UMTS的新版本。此外，所 述通信系统100还可以适用于面向未来的通信技术。本发明实施例描述的系统架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
本发明实施例中，基站(例如BS1-BS3)是一种部署在无线接入网中用以为UE提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站(也称为小站，英文为femeto，pico，small cell)，中继站，接入点等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，在5G系统中，可以称为gNodeB，传输节点(transmission point，TRP)。在LTE系统中，称为演进的节点B(evolved NodeB，eNB或者eNodeB),在第三代(3rd generation，3G)系统中，称为节点B(Node B)等。为方便描述，本发明所有实施例中，上述基站、节点B等其他为UE提供无线通信功能的装置统称为网络侧设备。
本发明实施例中所涉及到的UE可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述UE也可以称为移动台(mobile station,MS)，用户设备(terminal)，用户设备设备(terminal equipment)，还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication,MTC)用户设备等。本发明所有实施例中，上面提到的设备统称为UE。
此外，在如图1所示的通信系统100中，尽管示出了基站BS1-BS3，以及多个UE，但所述通信系统100可以并不限于包括所述基站和UE，还可以包括核心网设备或用于承载虚拟化网络功能的设备等，这些对于本领域普通技术人员而言是显而易见的，在此不一一详述。
在本实施例的方案中，UE1在接收BS3的下行数据时，其他基站(例如BS1、BS2)发射的无线信号会对UE1的下行数据接收产生干扰。本发明实施例中的UE1在获取下行信道的下行干扰信息后，直接向网络侧设备(例如BS3)发送上行测量参考信号，该上行测量参考信号中携带下行干扰信息。进而，网络侧设备(例如BS3)在接收到UE1发送的携带下行干扰信息的上行测量参考信号后，对上行测量参考信号进行下行干扰估计，即可获得 下行干扰信息。与现有技术中基站BS3无法获取UE1使用的下行信道的下行干扰信息相比，本实施例中的BS3可根据该下行干扰信息对UE1进行有效调度，提高了调度效率和数据传输效率。
参见图2，图2是本发明实施例提供的传输上行测量参考信号的方法的流程图。
在本发明实施例中，基站(例如BS3)为用户设备(例如UE1)提供蜂窝网络，UE1当前处于连接态(connected mode)。
如图2所示，UE1可以在接收到基站BS3的指示消息(步骤102)后开始执行向BS3发送下行干扰信息的步骤，UE1还可以在处于连接态的情况下主动向BS3发送下行干扰信息。此外，UE1可以周期性向BS3发送下行干扰信息，便于BS3接收到下行干扰信息。
其中，UE1在向BS3发送下行干扰信息之前，先获取BS3下行信道的下行干扰信息(步骤104)，然后向BS3发送携带下行干扰信息的上行测量参考信号。UE1可以基于特定的传输模式，例如发送分集或闭环空间复用，来计算得到下行干扰信息，下行干扰信息可以和特定的传输模式对应。UE1在基于特定的传输模式获得下行干扰信息后，可以将传输模式通知给基站BS3。其中，UE1可以通过新增的上行信令、或利用上述上行测量参考信号发送确定的传输模式给BS3，进而基站BS3可以使用UE1确定的传输模式来发送下行数据，数据传输效率更高。此外，UE1也可以不基于特定的模式来计算得到下行干扰信息，并向基站BS3发送下行干扰信息，基站BS3可以获得没有经过处理的下行干扰信息。
需要说明的是，步骤102、104之间并没有明确的时序关系，UE1可以在接收到BS3的指示消息之前获取下行信道的下行干扰信息，还可以在接收到BS3的指示消息之后获取下行信道的下行干扰信息。
在步骤104中，UE1可以通过如下方式向BS3发送上行测量参考信号。
方式1a、UE1向BS3发送初始的第一上行测量参考信号，使用步骤102中获得的下行干扰信息对所述初始的第一上行测量参考信号进行赋形，然后向BS3发送所述赋形后的第一上行测量参考信号。
其中，上行测量参考信号也可以称为上行探测参考信号(sounding reference signal，SRS)，其可以为标准的序列，例如Zad-off Chu序列。此外，初始的第一上行测量参考信号也可以称为无下行干扰赋形的第一上行测量参考信号，上述“第一”的目的是和后续的“第二”进行区别。赋形的方式可以为波束赋形，也可以是调制。
方式2a、UE1向BS3发送使用赋形矩阵V赋形的第二上行测量参考信号，然后使用下行干扰信息对V赋形的第二上行测量参考信号进行二次赋形，再向BS3发送所述二次赋形 后的第二上行测量参考信号。
其中，赋形矩阵V可以来自于BS3发送的码本信息(可以简称码本)，UE1根据该码本信息获得赋形矩阵V。此外，UE1还可以对基站BS3的下行信道进行信道估计，获得下行信道矩阵，然后使用下行信道矩阵计算得到赋形矩阵V。例如，对下行信道矩阵进行奇异值分解(singular value decomposition，SVD)分解。
上述V赋形的第二上行测量参考信号也可以称为无下行干扰赋形的第二上行测量参考信号，二次赋形后的第二上行测量参考信号也可以称为有下行干扰信息赋形后的第二上行测量参考信号。与上述方式1a相比，方式2a提供的第二上行测量参考信号的方法可以提高UE1发送的上行测量参考信号的覆盖，提高BS3接收到的上行测量参考信号的信干噪比，或者在相同的信干噪比的条件下，降低UE1发送上行测量参考信号的功率，节省UE1的功耗。
在方式1和方式2提供的实施例中，UE1在使用下行干扰信息对上述第一上行测量参考信号和第二上行测量参考信号进行赋形后，第一上行测量参考信号和第二上行测量参考信号即可携带该下行干扰信息。UE1可以通过特定的资源，例如子帧，来发送V赋形后的第二上行测量参考信号以及二次赋形后的第二上行测量参考信号。UE1可以通过复合的信号来发送上面的无下行干扰赋形的第一上行测量参考信号以及下行干扰信息赋形后的第一上行测量参考信号，也可以单独发送上述无下行干扰赋形的第一上行测量参考信号以及下行干扰信息赋形后的第一上行测量参考信号。对应的，UE1同样可以通过复合的信号来发送上面的无下行干扰赋形的第二上行测量参考信号以及下行干扰信息赋形后的第二上行测量参考信号，也可以单独发送上述无下行干扰赋形的第二上行测量参考信号以及下行干扰信息赋形后的第二上行测量参考信号。
继续参见图2，基站BS3在需要获取UE1的下行干扰信息时(例如BS3需要向UE1发送下行数据时)，向UE1发送指示消息(步骤102)，指示UE1向BS3发送下行干扰信息。BS3发送的指示消息具体可以为上行测量参考信号调度信令，该指示消息还可以通过物理层信令、无线资源控制层信令或媒体接入控制控制元素(medium access control control element，MACCE)层信令来发送。
在一个可选的实施例中，BS3也可以确定下行干扰信息对应的传输模式，例如发送分集或闭环空间复用，然后将确定的传输模式通知给UE1。其中，BS3可以将确定的传输模式携带在上述指示消息中发送给UE1，还可以新增下行信令发送给UE1，还可以预先配置给UE1，UE1根据BS3确定的传输模式获得对应传输模式的下行干扰信息。
BS3在发送上述指示消息后，会接收UE1发送的携带下行干扰信息的上行测量参考信号(步骤106)。BS3对接收到的上行测量参考信号进行下行干扰估计，获得下行干扰信息(步骤108)，进而BS3可以根据下行干扰信息对UE1进行调度，然后对UE1发送下行数据。
在步骤108中，BS3可以通过如下方式来获得下行干扰信息。
方式1b、BS3对无下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得上行信道矩阵H；对有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得所述上行信道矩阵H和所述下行干扰信息I的乘积H*I；然后根据上行信道矩阵H和所述乘积HI获得下行干扰信息。
与上述方式1a对应，由于UE1发送了无下行干扰信息赋形的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号，因而BS3对接收到的无下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得上行信道的矩阵H。BS3还对有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得上行信道矩阵H和所述下行干扰信息I的乘积H*I。BS3进一步根据H*I的乘积和上行信道的矩阵H即可获得下行干扰信息I。
2b、BS3对V赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H和V的乘积HV；对二次赋形后的第二上行测量参考信号进行信道估计，获得上行信道矩阵H、V和所述下行干扰信息的乘积，然后根据HV、以及HV与下行干扰信息的乘积获得所述下行干扰信息。
与上述方式2a对应，由于UE1发送了使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形的第二上行测量参考信号，因而BS3对接收到的无下行干扰信息赋形的第二上行测量参考信号进行信道估计，获得上行信道的矩阵H和赋形矩阵V的乘积H*V。BS3还对有下行干扰信息赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H、赋形矩阵V和下行干扰信息I的乘积H*V*I。BS3则可以根据H*V*I的乘积和H*V的乘积即可获得下行干扰信息I。
在以上方式1b、2b提供的实施例中，基站BS3采用的信道估计方法例如可以为最小均方误差方法(minimum mean square error,MMSE)。
在本发明实施例提供的传输上行测量参考信号的方法实施例中，UE1可以使用相同或相邻的时域资源发送上述无下行干扰信息赋形的第一上行测量参考信号和所述有下行干扰信息赋形后的第一上行测量参考信号，或者UE1使用相同或相邻的频域资源发送所述无下行干扰信息赋形的第一上行测量参考信号和所述有下行干扰信息赋形后的第一上行测 量参考信号。UE1还可以使用相同或不同的循环移位来发送所述无下行干扰信息赋形的第一上行测量参考信号和所述有下行干扰信息赋形后的第一上行测量参考信号。此外，上述时域资源、频域资源以及循环移位可以联合使用，例如UE1使用相同的时域资源和相邻的频域资源、相同的时域资源和不同的循环移位来发送无下行干扰信息赋形的第一上行测量参考信号和所述有下行干扰信息赋形后的第一上行测量参考信号。需要指出的是，以上仅给出了无下行干扰信息赋形的第一上行测量参考信号和所述有下行干扰信息赋形后的第一上行测量参考信号的发送方法，上述发送时域资源、频域资源和循环移位的发送方法也可以同样适用于V赋形的第二上行测量参考信号以及使用下行干扰信息进行二次赋形的第二上行测量参考信号。
如图3所示，图3是本发明实施例中UE1发送上行测量参考信号的一种资源配置图。其中，UE1在相同的时域资源，例如子帧(sub-frame)，相同的频域资源，例如簇(comb)，以及不同的循环移位(cyclic shift)上发送了无下行干扰信息赋形的第一上行测量参考信号SRS1(θ1)和所述有下行干扰信息赋形后的第一上行测量参考信号SRS2(θ2)，从而保证了两个信号SRS1(θ1)和SRS2(θ2)的正交性。其中，θ1和θ2表示不同的循环移位或相位，SRS1(θ1)的序列可以为ejθ1nF(n)，SRS2(θ2)的序列可以为ejθ2nF(n)。SRS1(θ1)和SRS2(θ2)可以位于相同的簇。
此外，SRS1(θ1)也可以表示赋形矩阵V赋形的第二上行测量参考信号，SRS2(θ2)也可以表示有下行干扰信息赋形的第二上行测量参考信号。
图4也示出了UE发送上行测量参考信号的另一种可选的资源配置图。其中，UE在相同的时域资源，例如子帧(sub-frame)，不同的簇(例如相邻的簇)上发送无下行干扰信息赋形的第一上行测量参考信号SRS1和所述有下行干扰信息赋形后的第一上行测量参考信号SRS2，从而保证了两个信号SRS1和SRS2的正交性。其中，SRS1也可以表示赋形矩阵V赋形的第二上行测量参考信号，SRS2也可以表示有下行干扰信息赋形的第二上行测量参考信号。在上述图3-4所示的资源配置图中，横轴为时间(子帧)，左斜线填充和右斜线填充分别表示不同的簇。
图5也示出了UE发送上行测量参考信号的另一种可选的资源配置图。其中，UE在相同的子帧(sub-frame)，不同的符号(symbol)上发送无下行干扰信息赋形的第一上行测量参考信号SRS1和所述有下行干扰信息赋形后的第一上行测量参考信号SRS2，从而保证了两个信号SRS1和SRS2的正交性，也进一步增加了上行测量参考信号发送的累计功率。其中，SRS1也可以表示赋形矩阵V赋形的第二上行测量参考信号，SRS2也可以表示有下行 干扰信息赋形的第二上行测量参考信号。其中，SRS1和SRS2可以使用相同或不同的频域资源，本实施例中不做限定。
在上述图5所示的资源配置图中，横轴为时间(子帧)，左斜线填充和右斜线填充分别表示不同的符号。结合图3-5所示的资源配置图可知，UE1可以周期性发送上述上行测量参考信号，例如间隔2个子帧发送一次。此外，UE1还可以发送多个用途不同的上行测量参考信号(例如UE1处于小区边缘或小区中心位置时分别发送上行测量参考信号)，例如第一个子帧发送赋形矩阵V1赋形的第二上行测量参考信号和有下行干扰信息和V1二次赋形的第二上行测量参考信号，第四个子帧发送赋形矩阵V2赋形的第二上行测量参考信号和有下行干扰信息和V2二次赋形的第二上行测量参考信号。基站BS3可以选择其中一个上行测量参考信号进行信道和干扰估计(例如选择第四个子帧发送的V2赋形的第二上行测量参考信号和有下行干扰信息和V2二次赋形的第二上行测量参考信号)，进而确定BS3在进行下行数据传输的赋形方式W和调制编码方案(modulation and coding scheme，MCS)等级。对应的，当UE1发送该第二上行测量参考信号时采用了赋形矩阵V2，则UE1接收所述下行数据时，也可以采用赋形矩阵V2接收数据。为了保证UE1采用赋形矩阵V2接收数据，基站可以将V2通过码本信息(可以通过上述2a中提到的码本信息)指示给UE1，UE1根据码本信息获得赋形矩阵V2。此外，BS3还可以将第二上行测量参考信号的资源索引(上行测量参考信号可以理解为资源)告知UE1，UE1根据该资源索引确定对应的V2赋形的第二上行测量参考信号，进而获知发送该第二上行测量参考信号时采用了赋形矩阵V2。
对于UE1发送一种类型的上行测量参考信号的情况，例如第一个子帧发送赋形矩阵V1赋形的第二上行测量参考信号和有下行干扰信息和V1二次赋形的第二上行测量参考信号，第四个子帧发送赋形矩阵V1赋形的第二上行测量参考信号和有下行干扰信息和V1二次赋形的第二上行测量参考信号。BS3可以不指示终端接收赋形信息，UE1的收发天线保持相同的赋形即可接收BS1的下行数据。此外，UE1采用1a或1b的方式发送上行测量参考信号时，UE1的收发天线也可以保持相同的赋形来接收BS1的下行数据。
上述本发明提供的实施例中，分别从用户设备和基站本身、以及用户设备和基站之间交互的角度对本发明实施例提供的上行测量参考信号传输方法进行了介绍。可以理解的是，各个网元，例如用户设备、基站等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，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，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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发明的范围。
图6示出了本发明实施例提供的网络侧设备的一种可能的结构示意图。该网络侧设备可以是如图1-2所示的基站BS1、BS2和BS3。
本实施例提供的网络侧设备主要包括：
第四方面，本发明实施例提供一种网络侧设备，其主要包括收发器601和处理器602(也可以称为控制器)。此外，网络侧设备还可以包括存储器603。
其中，收发器601主要用于网络侧设备接收和发送信号，例如接收用户设备发送的上行测量参考信号，所述上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息；
处理器602主要用于对网络侧设备进行控制管理，例如对收发器601接收到的上行测量参考信号进行下行干扰估计，获得所述下行干扰信息。作为示例，控制器/处理器602用于支持网络侧设备实现图2中的基站BS3一侧的方法步骤，例如步骤108。存储器603用于存储用于所述网络侧设备的程序代码和数据。
可选的，网络侧设备的收发器601接收到的上行测量参考信号中包括初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号。网络设备的处理器602对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息可以参考上述方法实施例中方式1b的相关描述，在此不再赘述。
可选的，网络侧设备的收发器601接收到的上行测量参考信号中包括使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形的第二上行测量参考信号；所述网络侧设备的处理器对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息具体可以参考上述方法实施例中方式2b相关的描述，在此不再赘述。
可选的，网络侧设备的收发器601还用于在接收用户设备发送的上行测量参考信号之前，向所述用户设备发送指示消息，用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
可以理解的是，图6仅仅示出了网络侧设备的简化设计。在实际应用中，网络侧设备可以包含任意数量的发射器，接收器，处理器，控制器，调制器，存储器等，而所有可以实现本发明的网络侧设备都在本发明的保护范围之内。
图7示出了本发明实施例提供的用户设备的一种可能的结构示意图。该用户设备可以是如图1-2所示的基站UE1-UE6。
本实施例提供的用户设备主要包括：收发器701和处理器702(也可以称为控制器)。此外，用户设备还可以包括存储器703。
其中，处理器702主要用于对用户设备进行控制管理，例如获取网络侧设备下行信道的下行干扰信息。收发器701主要用于用户设备接收和发送信号，例如向网络侧设备发送上行测量参考信号，所述上行测量参考信号中携带所述下行干扰信息。作为示例，控制器/处理器702用于支持用户设备实现图2中的UE1一侧的方法步骤，例如步骤104。存储器703用于存储用于所述用户设备的程序代码和数据。
可选的，用户设备的收发器701向网络侧设备发送上行测量参考信号具体可以采用上述方法实施例中1a或2a的相关描述，在此不再赘述。进一步的，用户设备的收发器701可以使用相同或相邻的时域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息后的第一上行测量参考信号。用户设备的收发器701也可以使用相同或相邻的频域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。用户设备的收发器701也可以使用相同或不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。用户设备的收发器701也可以使用相同的时域资源和不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。具体的发送过程可以参考图3-5的相关描述。
可选的，用户设备的收发器701还用于在向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号之前，接收所述网络侧设备发送的码本信息，所述处理器702还用于根据所述码本信息获取所述赋形矩阵V。
可选的，用户设备的收发器701还用于在所述处理器702获得网络侧设备下行信道的下行干扰信息之前，接收所述网络侧设备发送的指示消息，所述指示消息用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
其中，网络侧设备发送的指示消息可以用于指示用户设备向网络侧设备同时或一起发送初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号。该指示消息也可以用于指示用户设备向网络侧设备同时或一起发送V赋形的第二上行测量参考信号以及使用下行干扰信息赋形进行二次赋形后的第二上行测量参考信号。所述指示消息可以为上行测量参考信号调度信令。
可以理解的是，图7仅仅示出了用户设备的简化设计。在实际应用中，用户设备可以包含任意数量的发射器，接收器，处理器，控制器，调制器，存储器，显示器等，而所有可以实现本发明的用户设备都在本发明的保护范围之内。
本发明实施例还提供一种传输上行测量参考信号的系统，其包括如上实施例所述的用户设备以及网络侧设备，用户设备和网络侧设备的具体结构和功能参见上述实施例的相关描述，在此不再赘述。
结合本发明实施例公开内容所描述的方法或者算法的步骤可以采用硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于存储器、闪存、只读存储器、寄存器、硬盘、移动硬盘、光盘或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于用户设备中。当然，处理器和存储介质也可以作为分立组件存在于用户设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (23)

  1. 一种传输上行测量参考信号的方法，应用于用户设备，该方法包括：
    获取网络侧设备下行信道的下行干扰信息；
    向所述网络侧设备发送上行测量参考信号，所述上行测量参考信号中携带所述下行干扰信息。
  2. 如权利要求1所述的方法，其特征在于，所述向网络侧设备发送上行测量参考信号包括：
    向所述网络侧设备发送初始的第一上行测量参考信号；
    使用所述下行干扰信息对所述初始的第一上行测量参考信号进行赋形；
    向所述网络侧设备发送所述下行干扰信息赋形后的第一上行测量参考信号。
  3. 如权利要求1所述的方法，其特征在于，所述用户设备向网络侧设备发送上行测量参考信号包括：
    向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号；
    使用所述下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形；
    向所述网络侧设备发送所述二次赋形后的第二上行测量参考信号。
  4. 如权利要求3所述的方法，其特征在于，在所述用户设备向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号之前，还包括：
    所述用户设备接收所述网络侧设备发送的码本信息，根据所述码本信息获取所述赋形矩阵V。
  5. 如权利要求1-4任一项所述的方法，其特征在于，在所述用户设备获得网络侧设备下行信道的下行干扰信息之前还包括：
    接收所述网络侧设备发送的指示消息，用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
  6. 如权利要求2或3所述的方法，其特征在于，在所述用户设备获得网络侧设备下行信道的下行干扰信息之前还包括：
    接收所述网络侧设备发送的指示消息，所述指示消息用于指示所述用户设备发送所述初始的第一上行测量参考信号和下行干扰信息赋形后的第一上行测量参考信号，或者
    接收所述网络侧设备发送的指示消息，所述指示消息用于指示所述用户设备发送所述V赋形的第二上行测量参考信号和所述二次赋形后的第二上行测量参考信号。
  7. 如权利要求2所述的方法，其特征在于，
    所述用户设备使用相同或相邻的时域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号，或者
    所述用户设备使用相同或相邻的频域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号；或者
    所述用户设备使用相同或不同的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
  8. 一种传输上行测量参考信号的方法，应用于网络侧设备，其特征在于，该方法包括：
    接收用户设备发送的上行测量参考信号，所述上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息；
    对所述上行测量参考信号进行下行干扰估计，获得所述下行干扰信息。
  9. 如权利要求8所述的方法，其特征在于，所述网络侧设备接收到的上行测量参考信号中包括初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号；
    所述对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息包括：
    对所述初始的第一上行测量参考信号进行信道估计，获得上行信道矩阵H；
    对所述有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得所述上行信道矩阵H和所述下行干扰信息I的乘积HI；
    根据所述上行信道矩阵H和所述乘积HI获得所述下行干扰信息。
  10. 如权利要求8或9所述的方法，其特征在于，所述网络侧设备在接收用户设备发送的上行测量参考信号之前，还包括：
    向所述用户设备发送指示消息，用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
  11. 如权利要求8所述的方法，其特征在于，所述上行测量参考信号中包括使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形的第二上行测量参考信号；
    所述对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息具体包括：
    对所述V赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H和V的乘积HV；
    对所述二次赋形后的第二上行测量参考信号进行信道估计，获得所述上行信道矩阵H、V和所述下行干扰信息的乘积；
    根据所述HV、以及所述HV与下行干扰信息的乘积获得所述下行干扰信息。
  12. 如权利要求10所述的方法，其特征在于，所述网络侧设备发送的指示消息为上行测量参考信号调度信令。
  13. 一种用户设备，其特征在于，包括：
    处理器，用于获取网络侧设备下行信道的下行干扰信息；
    收发器，用于向所述网络侧设备发送上行测量参考信号，所述上行测量参考信号中携带所述下行干扰信息。
  14. 如权利要求13所述的用户设备，其特征在于，所述收发器向网络侧设备发送上行测量参考信号包括：
    向所述网络侧设备发送初始的第一上行测量参考信号；
    使用所述下行干扰信息对所述初始的第一上行测量参考信号进行赋形；
    向所述网络侧设备发送所述下行干扰信息赋形后的第一上行测量参考信号。
  15. 如权利要求13所述的用户设备，其特征在于，所述收发器向网络侧设备发送上行测量参考信号包括：
    向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号；
    使用所述下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形；
    向所述网络侧设备发送所述二次赋形后的第二上行测量参考信号。
  16. 如权利要求15所述的用户设备，其特征在于，所述收发器还用于在向所述网络侧设备发送使用赋形矩阵V赋形的第二上行测量参考信号之前，接收所述网络侧设备发送的码本信息，所述处理器还用于根据所述码本信息获取所述赋形矩阵V。
  17. 如权利要求13-15任一项所述的用户设备，其特征在于，所述收发器还用于在所述处理器获得网络侧设备下行信道的下行干扰信息之前，接收所述网络侧设备发送的指示消息，所述指示消息用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
  18. 如权利要求14所述的用户设备，其特征在于，
    所述收发器使用相同或相邻的时域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息后的第一上行测量参考信号，或者
    所述收发器使用相同或相邻的频域资源发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号；或者
    所述收发器使用相同或相邻的循环移位发送所述初始的第一上行测量参考信号和所述下行干扰信息赋形后的第一上行测量参考信号。
  19. 一种网络侧设备，其特征在于，包括：
    收发器，用于接收用户设备发送的上行测量参考信号，所述上行测量参考信号中携带所述网络侧设备的下行信道的下行干扰信息；
    处理器，用于对所述上行测量参考信号进行下行干扰估计，获得所述下行干扰信息。
  20. 如权利要求19所述的网络侧设备，其特征在于，所述收发器接收到的上行测量参考信号中包括初始的第一上行测量参考信号以及有下行干扰信息赋形的第一上行测量参考信号；
    所述处理器对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息包括：
    对所述初始的第一上行测量参考信号进行信道估计，获得上行信道矩阵H；
    对所述有下行干扰信息赋形的第一上行测量参考信号进行信道估计，获得所述上行信道矩阵H和所述下行干扰信息I的乘积HI；
    根据所述上行信道矩阵H和所述乘积HI获得所述下行干扰信息。
  21. 如权利要求19或20所述的网络侧设备，其特征在于，所述收发器还用于在接收用户设备发送的上行测量参考信号之前，向所述用户设备发送指示消息，用于指示所述用户设备向所述网络侧设备发送所述下行干扰信息。
  22. 如权利要求19所述的网络侧设备，其特征在于，所述收发器接收到的上行测量参考信号中包括使用赋形矩阵V赋形的第二上行测量参考信号以及使用下行干扰信息对所述V赋形的第二上行测量参考信号进行二次赋形的第二上行测量参考信号；
    所述处理器对上行测量参考信号进行下行干扰估计，获得所述下行信道的干扰信息具体包括：
    对所述V赋形的第二上行测量参考信号进行信道估计，获得上行信道矩阵H和V的乘积HV；
    对所述二次赋形后的第二上行测量参考信号进行信道估计，获得所述上行信道矩阵H、V和所述下行干扰信息的乘积；
    根据所述HV、以及所述HV与下行干扰信息的乘积获得所述下行干扰信息。
  23. 如权利要求21所述的网络侧设备，其特征在于，所述收发器发送的指示消息为上行测量参考信号调度信令。
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