WO2017050210A1 - 无线通信系统中的电子设备和无线通信方法 - Google Patents

无线通信系统中的电子设备和无线通信方法 Download PDF

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Publication number
WO2017050210A1
WO2017050210A1 PCT/CN2016/099452 CN2016099452W WO2017050210A1 WO 2017050210 A1 WO2017050210 A1 WO 2017050210A1 CN 2016099452 W CN2016099452 W CN 2016099452W WO 2017050210 A1 WO2017050210 A1 WO 2017050210A1
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WIPO (PCT)
Prior art keywords
csi
antenna ports
wireless communication
electronic device
antenna
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Ceased
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PCT/CN2016/099452
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English (en)
French (fr)
Inventor
徐瑨
高程
刘思綦
金炳丞
陈晋辉
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Sony Corp
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Sony Corp
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Application filed by Sony Corp filed Critical Sony Corp
Priority to KR1020187011164A priority Critical patent/KR102555127B1/ko
Priority to EP16848091.1A priority patent/EP3352381B1/en
Priority to AU2016327260A priority patent/AU2016327260B2/en
Priority to US15/760,941 priority patent/US10630363B2/en
Publication of WO2017050210A1 publication Critical patent/WO2017050210A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04B7/0619—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 using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side
    • 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
    • H04B7/0619—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 using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • 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
    • 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
    • H04B7/0602—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 antenna switching
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present disclosure relates to the technical field of wireless communications, and in particular to electronic devices in wireless communication systems and methods for wireless communication in wireless communication systems.
  • CSI-RS Channel State Information-Reference Signals
  • R10 Release 10, 10th Edition
  • LTE-A Long Term Evolution-Advanced
  • Beamforming is a signal preprocessing technique based on an antenna array. Beamforming produces a directional beam by adjusting the weighting coefficients of each element in the antenna array, so that a significant array gain can be obtained. Therefore, beamforming technology has great advantages in terms of expanding coverage, improving edge throughput, and suppressing interference. Therefore, the beamformed CSI-RS scheme can be used as an enhanced CSI-RS transmission scheme.
  • the resources of 5 sets of CSI-RS are insufficient to avoid the interference problem of beamforming CSI-RS.
  • beamforming is generally for users at the cell edge, so the transmission power is relatively large.
  • the interference will be very serious.
  • using the same CSI-RS resource to transmit beamforming CSI-RS to two user equipments also generates certain interference.
  • An object of the present disclosure is to provide an electronic device in a wireless communication system and a method for wireless communication in a wireless communication system, which can reduce interference of beamforming CSI-RS and improve performance of the system.
  • an electronic device in a wireless communication system including one or more processing circuits configured to perform an operation in response to a response from the wireless communication system
  • the measurement of the base station in the measurement indicates that the channel state information reference signal CSI-RS on one or more antenna ports is separately measured; and the feedback information is generated based on the result of the measurement for the base station to receive from the one or more antennas
  • An antenna port for transmitting a CSI-RS to the electronic device is selected in the port, the feedback information including occupancy information indicating an occupancy of each of the one or more antenna ports.
  • an electronic device in a wireless communication system including one or more processing circuits configured to perform an operation of generating a measurement indication to facilitate Determining, by the user equipment in the wireless communication system, channel state information reference signals CSI-RS on one or more antenna ports, respectively, based on the measurement indication; configuring CSI-RS resources for the one or more antenna ports; Selecting, from the one or more antenna ports, an antenna port for transmitting a CSI-RS to the user equipment based on feedback information from the user equipment, the feedback information including indicating the one or more antenna ports Occupancy information for the occupancy of each of the ones.
  • a wireless communication system including a user equipment and a base station, wherein the user equipment includes one or more first processing circuits, and the first processing circuit is Configuring to perform: measuring, in response to the measurement indication from the base station, channel state information reference signals CSI-RS on one or more antenna ports; and generating feedback information based on the result of the measurement, the feedback information Containing occupancy information indicating occupancy of each of the one or more antenna ports, and wherein the base station includes one or more second processing circuits, the second processing circuit configured to perform the following operations: Generating the measurement indication; configuring a CSI-RS resource for the one or more antenna ports; and selecting, based on the feedback information, a CSI-RS for transmitting to the user equipment from the one or more antenna ports Antenna port.
  • a method for wireless communication in a wireless communication system comprising: responsive to a measurement indication from a base station in the wireless communication system, through a wireless communication system
  • the user equipment separately measures channel state information reference signals CSI-RS on one or more antenna ports; and generates feedback information based on the results of the measurements for the base station to select from the one or more antenna ports for Transmitting an antenna port of the CSI-RS to the user equipment, the feedback information including occupancy information indicating occupancy of each of the one or more antenna ports.
  • a method for wireless communication in a wireless communication system comprising: generating a measurement indication to facilitate user equipment in the wireless communication system to Channel state information reference signals CSI-RS on the plurality of antenna ports are respectively measured; CSI-RS resources are configured for the one or more antenna ports; and from the one or more based on feedback information from the user equipment An antenna port for transmitting a CSI-RS to the user equipment is selected among the antenna ports, and the feedback information includes occupancy information indicating an occupancy condition of each of the one or more antenna ports.
  • the CSI-RS on one or more antenna ports can be measured to select before transmitting the CSI-RS A suitable antenna port is used to transmit the CSI-RS.
  • the CSI-RS port selection can be implemented, the CSI-RS interference can be reduced, and the performance of the system can be improved, and only a small signaling overhead can be implemented.
  • 1(a) is a schematic diagram illustrating a scenario in which beamforming CSI-RS interference exists
  • FIG. 1(b) is a schematic diagram illustrating another scenario in which beamforming CSI-RS interference exists
  • FIG. 2 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to an embodiment of the present disclosure
  • FIG. 3 is a diagram illustrating an electronic device in a wireless communication system according to another embodiment of the present disclosure. a block diagram of the structure
  • FIG. 4 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure
  • FIG. 5 is a block diagram illustrating a structure of a wireless communication system according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram illustrating a process of a wireless communication method according to an embodiment of the present disclosure
  • FIG. 7 is a sequence diagram illustrating a wireless communication method according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart illustrating a wireless communication method according to an embodiment of the present disclosure.
  • FIG. 9 is a flowchart illustrating a wireless communication method according to another embodiment of the present disclosure.
  • FIG. 10 is a block diagram showing a first example of a schematic configuration of an eNB (evolution Node Base Station) applicable to the present disclosure
  • FIG. 11 is a block diagram showing a second example of a schematic configuration of an eNB suitable for the present disclosure
  • FIG. 12 is a block diagram showing an example of a schematic configuration of a smartphone suitable for the present disclosure.
  • FIG. 13 is a block diagram showing an example of a schematic configuration of a car navigation device applicable to the present disclosure.
  • Example embodiments are provided so that this disclosure will be thorough, and the scope will be fully conveyed by those skilled in the art. Numerous specific details, such as specific components, devices, and methods, are set forth to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; In certain example embodiments, well-known processes, well-known structures, and well-known technology.
  • a UE User Equipment
  • a terminal having a wireless communication function such as a mobile terminal, a computer, an in-vehicle device, or the like.
  • the UE involved in the present disclosure may also be the UE itself or a component thereof such as a chip.
  • the base station involved in the present disclosure may be, for example, an eNB (evolution Node Base Station) or a component such as a chip in an eNB.
  • the technical solution of the present disclosure can be used, for example, in an FDD (Frequency Division Duplexing) system.
  • FDD Frequency Division Duplexing
  • FIG. 1(a) is a schematic diagram illustrating a scenario in which beamforming CSI-RS interference exists.
  • eNB1 and eNB2 are base stations of two adjacent cells, and both eNB1 and eNB2 use port 15 to generate beams to transmit beamformed CSI-RSs, thus causing interference. Since beamforming is generally used for users at the cell edge and the transmission power is large, interference between CSI-RSs transmitted by eNB1 and eNB2 cannot be ignored.
  • FIG. 1(b) is a schematic diagram illustrating another scenario in which beamforming CSI-RS interference exists.
  • FIG. 1(b) there are two user equipments in the coverage area of the eNB. If the eNBs all use port 15 to generate beams to transmit beamformed CSI-RSs to two user equipments, interference will result. If the distance between the two user equipments is relatively close, or the transmission power of the beamforming is large at the cell edge, the interference between the two CSI-RSs transmitted cannot be ignored.
  • FIG. 2 illustrates a structure of an electronic device 200 in a wireless communication system according to an embodiment of the present disclosure.
  • electronic device 200 can include processing circuitry 210. It should be noted that the electronic device 200 may include one processing circuit 210 or multiple processing circuits 210. In addition, the electronic device 200 may further include a communication unit 220 or the like as a transceiver.
  • processing circuitry 210 may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • the processing circuit 210 may include a measurement unit 211 and a generation unit 212.
  • the measurement unit 211 in response to a measurement indication from a base station in a wireless communication system, can separately measure CSI-RS on one or more antenna ports.
  • the measurement indication of the base station in the wireless communication system can be received by the communication unit 220.
  • the generating unit 212 may generate feedback information based on the result of the measurement for the base station to select an antenna port for transmitting the CSI-RS to the electronic device 200 from one or more antenna ports.
  • the feedback information can be transmitted to the base station through the communication unit 220.
  • the feedback information may include occupancy information indicating occupancy of each of the one or more antenna ports.
  • the occupation information included in the feedback information is only the occupancy of each of the one or more antenna ports determined by the electronic device 200, and is not the actual occupancy of the one or more antenna ports. For example, when an antenna port is actually occupied, if the transmission power on the antenna port is low or the electronic device 200 determines that the antenna port is not occupied due to some other reason, the generating unit of the electronic device 200 The feedback information generated by 212 will indicate that the antenna port is unoccupied.
  • the CSI-RS on one or more antenna ports may be separately measured and generated by the electronic device 200 before the CSI-RS is transmitted to the electronic device 200, for generating feedback information for
  • the base station selects an antenna port for transmitting the CSI-RS. In this way, the appropriate antenna port can be selected to transmit the CSI-RS, thereby avoiding the interference of the CSI-RS and improving the performance of the system.
  • one or more antenna ports that perform measurements may be one or more antenna ports of adjacent cells, that is, the electronic device 200 may have one or more antennas for adjacent cells.
  • the CSI-RSs on the ports perform measurements separately, thereby obtaining the occupancy of each of the one or more antenna ports of the adjacent cells.
  • the base station may select an antenna port that is not occupied by the neighboring cell for the electronic device 200 to transmit the CSI-RS.
  • UEs within the coverage of eNB1 respond to measurements from eNB1 on one or more (eg, all 8 antenna ports) antenna ports of neighboring cells.
  • the CSI-RS performs measurement separately, and generates feedback information based on the result of the measurement, and includes occupation information indicating that the port 15 has been occupied by the neighboring cell where the eNB2 is located.
  • the eNB1 may not select the port 15 when selecting to transmit the antenna port of the CSI-RS to the UE. In this way, eNB1 and eNB2 are prevented from transmitting CSI-RSs on the same antenna port, thereby avoiding interference of beamforming CSI-RS.
  • the one or more antenna ports that perform the measurement may also be one or more antenna ports of the own cell, that is, the electronic device 200 may be on one or more antenna ports of the own cell.
  • the CSI-RS performs measurements separately, thereby obtaining the occupancy of each of one or more antenna ports of the cell.
  • the base station can be an electronic device 200 The antenna port that is not occupied by other electronic devices in the cell is selected to transmit the CSI-RS.
  • the UE1 within the coverage of the eNB responds to the measurement indication from the eNB to CSI on one or more (eg, all 8 antenna ports) antenna ports of the own cell.
  • the RS performs measurement separately, and generates feedback information based on the result of the measurement, including occupancy information indicating that the port 15 has been occupied by the UE 2.
  • the eNB may not select the port 15 when selecting to transmit the antenna port of the CSI-RS to the UE1. In this way, the eNB avoids transmitting CSI-RSs for UE1 and UE2 at the same antenna port, thereby avoiding interference of beamforming CSI-RS.
  • the number of one or more antenna ports is n, where n is a natural number, and wherein the occupancy information includes a bitmap with n bits, wherein each bit corresponds to one or more One of the antenna ports.
  • the electronic device 200 may determine whether one or more antenna ports are occupied based on measurements of CSI-RSs on one or more antenna ports, the generating unit 212 according to one or The information on whether multiple antenna ports are occupied generates feedback information. For example, “1" and "0" can be used to indicate whether the corresponding antenna port is occupied. When an antenna port is occupied, the bit position corresponding to the antenna port in the bitmap is "1"; when an antenna port is not occupied, the bit position corresponding to the antenna port in the bitmap is "0".
  • the base station When the base station receives such a bitmap, it can clearly understand the occupancy of one or more antenna ports for the electronic device 200, and then select an antenna port for transmitting the CSI-RS to the electronic device 200, for example, selecting not The occupied antenna port transmits the CSI-RS.
  • the occupancy information may include a measured amount of CSI-RS on one or more antenna ports, such as RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality) , reference signal reception quality), received signal strength indication RSSI (Received Signal Strength Indication), CQI (Channel Quality Indication), and the like.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • RSSI Receiveived Signal Strength Indication
  • CQI Channel Quality Indication
  • the electronic device 200 feeds back the measured amount of the CSI-RS characterizing the occupancy information of the one or more antenna ports to the base station, and then the base station determines whether one or more antenna ports are occupied according to the measured amount, thereby selecting An antenna port for transmitting a CSI-RS to the electronic device 200, for example, the base station may select the antenna port with the smallest amount of CSI-RS measurement to transmit the CSI-RS.
  • the occupancy information may include a measure of the amount of CSI-RS on one or more antenna ports, such as RSRP, RSRQ, RSSI, CQI, and the like.
  • the electronic device 200 may sort the measured quantities of the CSI-RSs on different antenna ports from small to large or from large to small, and feed back the sorting result to the base station, and the base station selects the used to the electronic according to the sorting result.
  • the device 200 transmits an antenna port of the CSI-RS.
  • the base station can select the antenna port with the smallest amount of CSI-RS measurement to transmit the CSI-RS.
  • FIG. 3 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • the electronic device 200 can include a processing circuit 210 and a communication unit 220.
  • the processing circuit 210 may include a measurement unit 211, a generation unit 212, a comparison unit 213, and a determination unit 214.
  • the measuring unit 211, the generating unit 212, and the communication unit 220 may be the measuring unit 211, the generating unit 212, and the communication unit 220 shown in FIG. 2.
  • the comparison unit 213 can compare the result measured by the measurement unit 211 with a predetermined threshold, and the determination unit 214 can determine the occupancy information based on the result of the comparison by the comparison unit 213.
  • the predetermined threshold may be notified by the base station to the electronic device 200, for example, after the base station transmits the measurement indication to the electronic device 200, continuing to transmit the threshold information to the electronic device 200.
  • the predetermined threshold may also be known in advance by the electronic device 200, for example, in advance in the chip of the electronic device 200.
  • the predetermined threshold may include one or more thresholds.
  • the predetermined threshold includes a threshold
  • the thresholds of the CSI-RS measurements on the one or more antenna ports are the same, that is, the comparison unit 213 measures the CSI-RS on the one or more antenna ports.
  • the predetermined threshold may also include a plurality of thresholds, the plurality of thresholds respectively corresponding to the measurement results of the CSI-RSs on the plurality of antenna ports, and the comparing unit 213 to the plurality of antenna ports The measurement results of the upper CSI-RS are compared with their respective corresponding threshold values.
  • the amount obtained by the processing circuit 210 measuring the CSI-RS includes at least one of RSRP, RSRQ, RSSI, and CQI.
  • the above information is a parameter reflecting the reception quality of the antenna port, and thus can reflect the occupancy of the antenna port.
  • the processing circuit 210 determines that the antenna port transmitting the CSI-RS is occupied.
  • processing circuit 210 determines one or more antenna ports All are occupied, that is, the amount obtained by measuring the CSI-RS on one or more antenna ports is greater than a predetermined threshold, then the processing circuit 210 can minimize the amount of the antenna port obtained by measuring the CSI-RS.
  • the corresponding bit position in the figure is "0". In this way, the base station can select the antenna port with the smallest amount obtained by measuring the CSI-RS to transmit the CSI-RS.
  • the electronic device 200 may measure one or more neighboring cells by configuring, by the base station, ZP (Zero Power) CSI-RS resources for one or more antenna ports of the current cell where the electronic device 200 is located. CSI-RS on the antenna port.
  • ZP Zero Power
  • one or more antenna ports of the current cell are configured with ZP CSI-RS resources, and if the measurement unit 211 measures the CSI-RSs on the one or more antenna ports, the one or more of the neighboring cells The antenna port is more likely to be occupied. Therefore, the predetermined threshold may be set according to actual conditions. When the measured result is greater than the predetermined threshold, it is determined that the corresponding antenna port is occupied by the adjacent cell.
  • the base station may configure ZP CSI-RS resources for all antenna ports of the current cell where the electronic device 200 is located, and then the electronic device 200 may measure CSI-RSs on all antenna ports of the neighboring cells.
  • the base station may also configure a ZP CSI-RS resource for a part of the antenna port of the current cell where the electronic device 200 is located, and then the electronic device 200 may measure the CSI-RS on the corresponding partial antenna port of the neighboring cell. For example, if the base station configures the ZP CSI-RS resource for the antenna port 1-4 of the current cell where the electronic device 200 is located, the electronic device 200 can measure the CSI-RS on the antenna ports 1-4 of the neighboring cell.
  • antenna port numbers are shown in an exemplary manner, such as antenna number 0, antenna port No. 1, antenna ports 1-4, and the like.
  • the antenna port number of the CSI-RS is 15-22.
  • the antenna port numbers in the various embodiments of the present disclosure are for illustrative purposes only and do not conflict with the antenna port numbers employed in prior systems. Further, in future systems, the present invention still applies if the CSI-RS port number is redefined to other values.
  • the electronic device 200 when the electronic device 200 needs to measure a CSI-RS on one or more antenna ports of the own cell and the current cell and the neighboring cell use orthogonal CSI-RS resources, then the current cell and the neighboring cell There is no CSI-RS interference between cells, so the base station does not need to configure ZP CSI-RS resources for one or more antenna ports of the current cell where the electronic device 200 is located. If the measurement unit 211 measures the CSI-RS on one or more antenna ports of the own cell, then the one or more antenna ports are more likely to be occupied by other user equipments of the own cell. Therefore, the predetermined threshold can be set according to the actual situation.
  • the determining unit 214 determines the corresponding antenna port.
  • the comparison unit 213 determines that the measured result is less than or equal to the predetermined threshold, the determining unit 214 determines that the corresponding antenna port is not occupied by other users of the local cell, or is occupied by other users of the local cell but Not enough to cause harmful interference to the electronic device 200.
  • the base station when the electronic device 200 needs to measure CSI-RSs on one or more antenna ports of the own cell and the current cell does not use orthogonal CSI-RS resources with neighboring cells, the base station is first required to be an electronic device.
  • One or more antenna ports of the current cell in which the device 200 is located configure ZP CSI-RS resources to measure CSI-RSs on one or more antenna ports of neighboring cells, thereby determining that one or more antenna ports are occupied by neighboring cells In this case, this step is similar to that described earlier.
  • one or more antenna ports of the current cell normally transmit CSI-RS to measure CSI-RS on one or more antenna ports of the current cell.
  • the measurement unit 211 measures the CSI-RS on one or more antenna ports of the current cell
  • the one or more antenna ports may be occupied by neighboring cells, and may also be occupied by other user equipments of the own cell.
  • the determining unit 214 can analyze the results of the two measurements to determine that one or more antenna ports of the own cell are occupied by other user equipments of the own cell.
  • the CSI-RS is transmitted only through a part of the antenna port and is shaped by a beam.
  • one antenna port may correspond to one beam, or multiple antenna ports may correspond to one beam.
  • the electronic device 200 when one antenna port corresponds to one beam, the electronic device 200 respectively measures CSI-RSs on each of the one or more antenna ports; when multiple antenna ports correspond to one beam, the electrons The device 200 can also measure the CSI-RS as a group of multiple antenna ports.
  • the occupancy information when the CSI-RS is beamformed, includes a bitmap with n/m bits, where n represents the number of one or more antenna ports, and m represents every m antenna ports Corresponding to one beam, both n and m are natural numbers, and each bit in the bitmap corresponds to m antenna ports corresponding to one beam. That is to say, a bit of "1" indicates that its corresponding m antenna ports are occupied, and a bit of "0" indicates that its corresponding m antenna ports are not occupied. It can be seen that the occupancy information described above includes a bitmap with n bits which is a special case when m is 1.
  • the base station In the existing solution that does not introduce a beamforming CSI-RS, the base station only configures ZP CSI-RS or NZP (Non-Zero Power) CSI-RS for all antenna ports of the current cell where the electronic device is located. Resources and use all antenna ports for CSI-RS transmission The electronic device also measures the CSI-RS together with all the antenna ports of the cell as a whole and performs CSI reporting. Since all the antenna ports are used to transmit the CSI-RS according to the communication protocol, and do not care about each antenna port of the cell. Occupation.
  • the base station may configure a ZP CSI-RS for a part of the antenna ports of the current cell where the electronic device 200 is located, and the electronic device 200 may also measure the CSI-RSs respectively for each antenna port of the neighboring cell, so that the neighbors can be known.
  • the occupancy of each antenna port of the cell if necessary, can also know the occupancy of some antenna ports of the neighboring cell, thereby supporting the dynamic port selection of the base station for each UE, that is, user equipment-specific (UE-Specific) port selection. .
  • the measurement indication is included in the radio resource control RRC signaling. This is because the RRC signaling belongs to the high layer signaling. Compared with the physical layer signaling such as DCI (Downlink Control Information) signaling, the RRC signaling configuration period is long and resources are more, which is more advantageous for carrying the measurement indication.
  • DCI Downlink Control Information
  • a new request AllPortMeasRequest is defined to instruct the electronic device 200 to separately measure the CSI-RS on one or more antenna ports.
  • the foregoing wireless communication system may be an LTE-A cellular communication system
  • the electronic device 200 may be a user equipment in a wireless communication system.
  • FIG. 4 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • electronic device 400 can include processing circuitry 410. It should be noted that the electronic device 400 may include one processing circuit 410 or multiple processing circuits 410. In addition, the electronic device 400 may further include a communication unit 420 such as a transceiver.
  • a communication unit 420 such as a transceiver.
  • processing circuit 410 may also include various discrete functional units to perform various different functions and/or operations. These functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • the processing circuit 410 may include a generating unit 411, a configuring unit 412, and a selecting unit 413.
  • the generating unit 411 generates a measurement indication so that the user equipment in the wireless communication system separately measures the CSI-RSs on the one or more antenna ports based on the measurement indication. For example, a measurement indication can be sent to the user equipment through the communication unit 420.
  • the configuration unit 412 configures CSI-RS resources for one or more antenna ports.
  • the selection unit 413 may select an antenna port for transmitting the CSI-RS to the user equipment from one or more antenna ports. For example, feedback information can be received from the user device via communication unit 420.
  • the feedback information includes occupancy information indicating occupancy of each of the one or more antenna ports.
  • the number of one or more antenna ports is n, where n is a natural number, and the occupancy information comprises a bitmap with n bits, wherein each bit corresponds to one of the one or more antenna ports port.
  • the CSI-RS is transmitted only through a portion of the antenna port and is beam shaped.
  • processing circuit 410 includes the measurement indication in RRC signaling.
  • the processing circuit 410 generates a measurement indication to indicate that the user equipment measures CSI-RSs on all antenna ports of the neighboring cell, and the processing circuit 410 configures ZP CSI-RS resources for all antenna ports of the current cell in which the user equipment is located.
  • the measurement indication occupies 1 bit.
  • configuration unit 412 in processing circuit 410 is further configured to: reconfigure NZP CSI-RS resources for selected antenna ports for transmitting CSI-RS to user equipment.
  • one antenna port may be selected for transmitting a CSI-RS to a user equipment, or multiple, for example, a pair of antenna ports for transmitting a CSI-RS to a user equipment.
  • the index bit can be increased to carry the port indication information.
  • the index information may also be used to indicate the selected antenna port pair for transmitting the CSI-RS to the user equipment.
  • the index bit can be increased to carry the port indication information.
  • the configuration unit 412 may reconfigure the NZP CSI-RS for the selected antenna port. Resources. Next, based on the reconfigured NZP CSI-RS resources, the user equipment measures the CSI-RS on the selected antenna port and then feeds back the CSI to the electronic device 400.
  • the processing circuit 420 includes the selected antenna port for transmitting the CSI-RS to the user equipment in the RRC signaling.
  • IE PhysicalConfigDedicated is modified to have PhysicalConfigDedicated-r13 added.
  • the definition of PhysicalConfigDedicated-r13 is as follows:
  • the PortSelectionResult is an antenna port selected from one or more antenna ports for transmitting a CSI-RS to the user equipment.
  • BIT STRING (3) indicates that in the case where both the current cell and the neighboring cell have 8 antenna ports, 3 bits are required to indicate 8 antenna ports. In the future LTE-A system, the current cell and the neighboring cell may have more than 8 antenna ports, for example, 16 antenna ports. In this case, 4 bits are required to indicate 16 antenna ports, and the BIT STRING is 4. That is, BIT STRING represents the number of bits used to indicate the CSI-RS antenna port.
  • radioResourceConfigDedicated contains physicalConfigDedicated
  • electronic device 400 is a base station
  • communication unit 420 in electronic device 400 is a transceiver that is configured to communicate with user equipment.
  • FIG. 5 is a block diagram illustrating a structure of a wireless communication system according to an embodiment of the present disclosure.
  • the wireless communication system includes an electronic device 200 and an electronic device 400, wherein the electronic device 200 can be a user device, and the electronic device 400 can be a base station, wherein the electronic device 200 includes one or more processing circuits 210 and communications Unit 220, processing circuit 210 includes a measurement unit 211 and a generation unit 212.
  • processing circuit 210 includes a measurement unit 211 and a generation unit 212.
  • the measurement unit 211 separately measures the CSI-RS on one or more antenna ports.
  • the generating unit 212 generates feedback information based on the result of the measurement, the feedback information including occupancy information indicating occupancy of each of the one or more antenna ports.
  • the electronic device 400 includes one or more processing circuits 410 and a communication unit 420.
  • the processing circuit 410 includes a generating unit 411, a configuring unit 412, and a selecting unit 413.
  • the generating unit 411 generates a measurement indication.
  • the configuration unit 412 configures CSI-RS resources for one or more antenna ports.
  • the selection unit 413 selects an antenna port for transmitting the CSI-RS to the electronic device 200 from one or more antenna ports.
  • FIG. 6 is a process diagram illustrating a wireless communication method in accordance with an embodiment of the present disclosure.
  • a new request AllPortMeasRequest is determined.
  • the CSI-RS of all antenna ports is measured.
  • the user equipment measures the CSI-RSs on all antenna ports of the neighboring cell respectively.
  • the user equipment generates feedback information based on the measured result, and defines a new response AllPortMeasResponse to carry the feedback information.
  • the information about the occupancy of each of the eight antenna ports of the neighboring cell is included in the feedback information, and the occupancy information includes a bitmap with 8 bits.
  • the base station selects an antenna port for transmitting the CSI-RS to the user equipment from the eight antenna ports based on the feedback information from the user equipment, and reconfigures the NZP CSI-RS resource for the selected antenna port, and the process ends.
  • AllPortMeasRequest is not 1, for example 0, the base station configures the NZP CSI-RS resource for the selected antenna port.
  • the user equipment measures the CSI-RS on the selected antenna port.
  • the user equipment feeds back the CSI information to the base station, and the process ends.
  • FIG. 7 is a sequence diagram illustrating a wireless communication method in accordance with an embodiment of the present disclosure.
  • the eNodeB configures ZP CSI-RS resources for all antenna ports of the current cell where the UE is located.
  • the UE measures the CSI-RSs on all antenna ports of the neighboring cell respectively.
  • the UE sends feedback information to the eNodeB through AllPortMeasResponse signaling.
  • the eNodeB selects an antenna port for transmitting CSI-RS to the UE from among all antenna ports, and reconfigures the NZP CSI-RS resource for the selected antenna port.
  • the eNodeB sends the reconfigured NZP CSI-RS resource to the UE.
  • the UE measures the CSI-RS of the selected antenna port using the NZP CSI-RS resource.
  • the UE sends CSI feedback information to the eNodeB.
  • the UE can determine that the CSI-RS information on the designated antenna port needs to be measured.
  • the UE measures the CSI-RS of all the antenna ports of the neighboring cells, and in the example shown in FIG. 6, all the antennas of the neighboring cells are also specified.
  • the number of ports is eight, but the present invention is not limited to this.
  • the process and the timing diagram are similar to those of FIG. 6 and FIG. 7, and the details are not described herein again.
  • the occupancy of the neighboring cell antenna port may be measured, thereby selecting There is no port occupied by the neighboring cell to transmit beamforming CSI-RS. In this way, the port selection of the beamforming CSI-RS can be supported, the interference of the inter-cell beamforming CSI-RS is avoided, and the performance of the system is improved.
  • the occupancy of the antenna port of the cell can be measured, so that the port that is not occupied by other user equipments of the cell is selected for transmission.
  • Beamforming CSI-RS the occupancy of the antenna port of the cell.
  • port selection and multiplexing of the beamforming CSI-RS can be implemented within the cell, and interference between the beamforming CSI-RSs is avoided during multiplexing.
  • the user equipment only needs to feed back a bitmap, which can be implemented with a small signaling overhead.
  • FIG. 8 shows a flow chart of a method of wireless communication in accordance with an embodiment of the present disclosure.
  • step S810 CSI-RSs on one or more antenna ports are separately measured by user equipment in the wireless communication system in response to measurement indications from base stations in the wireless communication system.
  • step S820 feedback information is generated based on the result of the measurement, for the base station to select an antenna port for transmitting the CSI-RS from the one or more antenna ports, the feedback information includes indicating one or more antenna ports. Occupancy information for the occupancy of each of the ones.
  • the number of one or more antenna ports is n, where n is a natural number, and the occupancy information comprises a bitmap with n bits, wherein each bit corresponds to one of the one or more antenna ports port.
  • step S820 further comprises: comparing the measured result with a predetermined threshold; and determining the occupancy information according to the result of the comparison.
  • the CSI-RS is transmitted only through a portion of the antenna port and is beam shaped.
  • the measurement indication is included in the RRC signaling.
  • the amount obtained by measuring the CSI-RS includes at least one of RSRP, RSRQ, RSSI, and CQI.
  • determining the occupancy information according to the result of the comparison further comprises determining that the antenna port transmitting the CSI-RS is occupied when the amount obtained by measuring the CSI-RS is greater than a predetermined threshold.
  • the wireless communication system is an LTE-A cellular communication system.
  • FIG. 9 shows a flow chart of a method of wireless communication in accordance with another embodiment of the present disclosure.
  • a measurement indication is generated to facilitate measurement by the user equipment in the wireless communication system for the CSI-RSs on the one or more antenna ports based on the measurement indication.
  • step S920 CSI-RS resources are configured for one or more antenna ports.
  • an antenna port for transmitting a CSI-RS to the user equipment is selected from one or more antenna ports based on feedback information from the user equipment, the feedback information including indicating each of the one or more antenna ports An occupational occupancy information.
  • the number of one or more antenna ports is n, where n is a natural number, and the occupancy information comprises a bitmap with n bits, wherein each bit corresponds to one of the one or more antenna ports port.
  • the CSI-RS is transmitted only through a portion of the antenna port and is beam shaped.
  • the measurement indication is included in the RRC signaling.
  • step S910 includes: generating a measurement indication to indicate that the user equipment measures CSI-RSs on all antenna ports of the neighboring cell
  • step S920 includes: configuring ZP CSI-RS resources for all antenna ports of the current cell where the user equipment is located.
  • the wireless communication method further comprises: reconfiguring the NZP CSI-RS resource for the selected antenna port for transmitting the CSI-RS to the user equipment.
  • the measurement indication occupies 1 bit.
  • the base stations mentioned in this disclosure may be implemented as any type of evolved Node B (eNB), such as a macro eNB and a small eNB.
  • the small eNB may be an eNB covering a cell smaller than the macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
  • the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS).
  • BTS base transceiver station
  • the base station can include: a body (also referred to as a base station device) configured to control wireless communication; and one or more remote wireless headends (RRHs) disposed at a different location than the body.
  • a body also referred to as a base station device
  • RRHs remote wireless headends
  • various types of terminals which will be described below, can operate as a base station by performing base station functions temporarily or semi-persistently.
  • the UE mentioned in the present disclosure may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device) or an in-vehicle terminal. (such as car navigation equipment).
  • the UE may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • MTC machine type communication
  • M2M machine-to-machine
  • the UE may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above terminals.
  • FIG. 10 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied.
  • the eNB 1000 includes one or more antennas 1010 and a base station device 1020.
  • the base station device 1020 and each antenna 1010 may be connected to each other via an RF cable.
  • Each of the antennas 1010 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna, and is used by the base station device 1020 to transmit and receive wireless signals.
  • the eNB 1000 may include a plurality of antennas 1010.
  • multiple antennas 1010 can be compatible with multiple frequency bands used by eNB 1000.
  • FIG. 10 illustrates an example in which the eNB 1000 includes a plurality of antennas 1010, the eNB 1000 may also include a single antenna 1010.
  • the base station device 1020 includes a controller 1021, a memory 1022, a network interface 1023, and a wireless communication interface 1025.
  • the controller 1021 can be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station device 1020. For example, controller 1021 generates data packets based on data in signals processed by wireless communication interface 1025 and communicates the generated packets via network interface 1023. The controller 1021 can bundle data from a plurality of baseband processors to generate bundled packets and deliver the generated bundled packets. The controller 1021 may have a logical function that performs control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes.
  • the memory 1022 includes a RAM and a ROM, and stores programs executed by the controller 1021 and various types of control data such as a terminal list, transmission power data, and scheduling data.
  • Network interface 1023 is a communication interface for connecting base station device 1020 to core network 1024. Controller 1021 can communicate with a core network node or another eNB via network interface 1023. In this case, the eNB 1000 and the core network node or other eNBs may be connected to each other through a logical interface such as an S1 interface and an X2 interface. Network interface 1023 may also be a wired communication interface or a wireless communication interface for wireless backhaul lines. If network interface 1023 is a wireless communication interface, network interface 1023 can use a higher frequency band for wireless communication than the frequency band used by wireless communication interface 1025.
  • the wireless communication interface 1025 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connectivity to terminals located in cells of the eNB 1000 via the antenna 1010.
  • Wireless communication interface 1025 may typically include, for example, a baseband (BB) processor 1026 and RF circuitry 1027.
  • the BB processor 1026 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs layers (eg, L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP)) Various types of signal processing.
  • BB processor 1026 may have some or all of the above described logic functions.
  • the BB processor 1026 may be a memory that stores a communication control program, or a module that includes a processor and associated circuitry configured to execute the program.
  • the update program can cause the functionality of the BB processor 1026 to change.
  • the module can be a card or blade that is inserted into a slot of base station device 1020. Alternatively, the module can also be a chip mounted on a card or blade.
  • the RF circuit 1027 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1010.
  • the wireless communication interface 1025 can include a plurality of BB processors 1026.
  • multiple BB processors 1026 can be compatible with multiple frequency bands used by eNB 1000.
  • the wireless communication interface 1025 can include a plurality of RF circuits 1027.
  • multiple RF circuits 1027 can be compatible with multiple antenna elements.
  • FIG. 10 illustrates an example in which the wireless communication interface 1025 includes a plurality of BB processors 1026 and a plurality of RF circuits 1027, the wireless communication interface 1025 may also include a single BB processor 1026 or a single RF circuit 1027.
  • the eNB 11 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure may be applied.
  • the eNB 1130 includes one or more antennas 1140, a base station device 1150, and an RRH 1160.
  • the RRH 1160 and each antenna 1140 may be connected to each other via an RF cable.
  • the base station device 1150 and the RRH 1160 may be connected to each other via a high speed line such as a fiber optic cable.
  • Each of the antennas 1140 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the RRH 1160 to transmit and receive wireless signals.
  • the eNB 1130 may include a plurality of antennas 1140.
  • multiple antennas 1140 can be compatible with multiple frequency bands used by eNB 1130.
  • FIG. 11 illustrates an example in which the eNB 1130 includes multiple antennas 1140, the eNB 1130 may also include a single antenna 1140.
  • the base station device 1150 includes a controller 1151, a memory 1152, a network interface 1153, a wireless communication interface 1155, and a connection interface 1157.
  • the controller 1151, the memory 1152, and the network interface 1153 are the same as the controller 1021, the memory 1022, and the network interface 1023 described with reference to FIG.
  • Wireless communication interface 1155 supports any cellular communication scheme (such as LTE and LTE-first) And wireless communication to the terminal located in the sector corresponding to the RRH 1160 is provided via the RRH 1160 and the antenna 1140.
  • Wireless communication interface 1155 can generally include, for example, BB processor 1156.
  • the BB processor 1156 is identical to the BB processor 1026 described with reference to FIG. 10 except that the BB processor 1156 is connected to the RF circuit 1164 of the RRH 1160 via the connection interface 1157.
  • the wireless communication interface 1155 can include a plurality of BB processors 1156.
  • multiple BB processors 1156 can be compatible with multiple frequency bands used by eNB 1130.
  • FIG. 11 illustrates an example in which the wireless communication interface 1155 includes a plurality of BB processors 1156, the wireless communication interface 1155 may also include a single BB processor 1156.
  • connection interface 1157 is an interface for connecting the base station device 1150 (wireless communication interface 1155) to the RRH 1160.
  • the connection interface 1157 may also be a communication module for communicating the base station device 1150 (wireless communication interface 1155) to the above-described high speed line of the RRH 1160.
  • the RRH 1160 includes a connection interface 1161 and a wireless communication interface 1163.
  • connection interface 1161 is an interface for connecting the RRH 1160 (wireless communication interface 1163) to the base station device 1150.
  • the connection interface 1161 may also be a communication module for communication in the above high speed line.
  • the wireless communication interface 1163 transmits and receives wireless signals via the antenna 1140.
  • Wireless communication interface 1163 can generally include, for example, RF circuitry 1164.
  • the RF circuit 1164 can include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 1140.
  • the wireless communication interface 1163 can include a plurality of RF circuits 1164.
  • multiple RF circuits 1164 can support multiple antenna elements.
  • FIG. 11 illustrates an example in which the wireless communication interface 1163 includes a plurality of RF circuits 1164, the wireless communication interface 1163 may also include a single RF circuit 1164.
  • the processing circuit 410 described by using FIG. 4 and the generation unit 411, the configuration unit 412, and the selection unit 413 therein may be used by the controller 1021 and/or the controller.
  • 1151 is implemented, and the communication unit 420 described by using FIG. 4 can be implemented by the wireless communication interface 1025 and the wireless communication interface 1155 and/or the wireless communication interface 1163.
  • controller 1021 and controller 1151 can perform a generation measurement indication function, a configuration CSI-RS resource function, and a selection antenna port function by executing an instruction stored in a corresponding memory.
  • FIG. 12 is a schematic configuration showing a smartphone 1200 to which the technology of the present disclosure can be applied.
  • the smart phone 1200 includes a processor 1201, a memory 1202, a storage device 1203, an external connection interface 1204, an imaging device 1206, a sensor 1207, a microphone 1208, an input device 1209, a display device 1210, a speaker 1211, a wireless communication interface 1212, and one or more An antenna switch 1215, one or more antennas 1216, a bus 1217, a battery 1218, and an auxiliary controller 1219.
  • the processor 1201 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and the other layers of the smartphone 1200.
  • the memory 1202 includes a RAM and a ROM, and stores data and programs executed by the processor 1201.
  • the storage device 1203 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 1204 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 1200.
  • USB universal serial bus
  • the imaging device 1206 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
  • Sensor 1207 can include a set of sensors, such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
  • the microphone 1208 converts the sound input to the smartphone 1200 into an audio signal.
  • the input device 1209 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 1210, and receives an operation or information input from a user.
  • the display device 1210 includes screens such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smartphone 1200.
  • the speaker 1211 converts the audio signal output from the smartphone 1200 into sound.
  • the wireless communication interface 1212 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 1212 may generally include, for example, BB processor 1213 and RF circuitry 1214.
  • the BB processor 1213 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • the RF circuit 1214 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1216.
  • the wireless communication interface 1212 can be a chip module on which the BB processor 1213 and the RF circuit 1214 are integrated. As shown in FIG.
  • the wireless communication interface 1212 can include a plurality of BB processors 1213 and a plurality of RF circuits 1214.
  • FIG. 12 illustrates an example in which the wireless communication interface 1212 includes a plurality of BB processors 1213 and a plurality of RF circuits 1214, the wireless communication interface 1212 may also include a single BB processor 1213 or a single RF circuit 1214.
  • wireless communication interface 1212 can support additional types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes.
  • the wireless communication interface 1212 can include for each The BB processor 1213 and the RF circuit 1214 of the line communication scheme.
  • Each of the antenna switches 1215 switches the connection destination of the antenna 1216 between a plurality of circuits included in the wireless communication interface 1212, such as circuits for different wireless communication schemes.
  • Each of the antennas 1216 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 1212 to transmit and receive wireless signals.
  • smart phone 1200 can include multiple antennas 1216.
  • FIG. 12 illustrates an example in which smart phone 1200 includes multiple antennas 1216, smart phone 1200 may also include a single antenna 1216.
  • smart phone 1200 can include an antenna 1216 for each wireless communication scheme.
  • the antenna switch 1215 can be omitted from the configuration of the smartphone 1200.
  • the bus 1217 stores the processor 1201, the memory 1202, the storage device 1203, the external connection interface 1204, the imaging device 1206, the sensor 1207, the microphone 1208, the input device 1209, the display device 1210, the speaker 1211, the wireless communication interface 1212, and the auxiliary controller 1219 with each other. connection.
  • Battery 1218 provides power to various blocks of smart phone 1200 shown in FIG. 12 via feeders, which are partially shown as dashed lines in the figure.
  • the secondary controller 1219 operates the minimum required functions of the smartphone 1200, for example, in a sleep mode.
  • the generating unit 212, the comparing unit 213, and the determining unit 214 may be implemented by the processor 1201 or the auxiliary controller 1219, and may be wirelessly communicated by using the communication unit 220 described in FIG. 2 and the communication unit 220 described by using FIG. Interface 1212 is implemented. At least a portion of the functionality may also be implemented by processor 1201 or secondary controller 1219.
  • the processor 1201 or the auxiliary controller 1219 can perform a function of measuring a CSI-RS function and generating a feedback information by executing an instruction stored in the memory 1202 or the storage device 1203.
  • FIG. 13 is a block diagram showing an example of a schematic configuration of a car navigation device 1320 to which the technology of the present disclosure can be applied.
  • the car navigation device 1320 includes a processor 1321, a memory 1322, a global positioning system (GPS) module 1324, a sensor 1325, a data interface 1326, a content player 1327, a storage medium interface 1328, an input device 1329, a display device 1330, a speaker 1331, and a wireless device.
  • the processor 1321 can be, for example, a CPU or SoC and controls the navigation functions and additional functions of the car navigation device 1320.
  • the memory 1322 includes a RAM and a ROM, and stores data and programs executed by the processor 1321.
  • the GPS module 1324 measures the position (such as latitude, longitude, and altitude) of the car navigation device 1320 using GPS signals received from GPS satellites.
  • Sensor 1325 can include a set of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor.
  • the data interface 1326 is connected to, for example, the in-vehicle network 1341 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.
  • the content player 1327 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 1328.
  • the input device 1329 includes, for example, a touch sensor, a button or a switch configured to detect a touch on the screen of the display device 1330, and receives an operation or information input from a user.
  • the display device 1330 includes a screen such as an LCD or OLED display, and displays an image of the navigation function or reproduced content.
  • the speaker 1331 outputs the sound of the navigation function or the reproduced content.
  • the wireless communication interface 1333 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 1333 may generally include, for example, BB processor 1334 and RF circuitry 1335.
  • the BB processor 1334 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • the RF circuit 1335 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1337.
  • the wireless communication interface 1333 can also be a chip module on which the BB processor 1334 and the RF circuit 1335 are integrated. As shown in FIG.
  • the wireless communication interface 1333 may include a plurality of BB processors 1334 and a plurality of RF circuits 1335.
  • FIG. 13 illustrates an example in which the wireless communication interface 1333 includes a plurality of BB processors 1334 and a plurality of RF circuits 1335, the wireless communication interface 1333 may also include a single BB processor 1334 or a single RF circuit 1335.
  • the wireless communication interface 1333 can support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near-field communication scheme, and a wireless LAN scheme.
  • the wireless communication interface 1333 may include a BB processor 1334 and an RF circuit 1335 for each wireless communication scheme.
  • Each of the antenna switches 1336 switches the connection destination of the antenna 1337 between a plurality of circuits included in the wireless communication interface 1333, such as circuits for different wireless communication schemes.
  • Each of the antennas 1337 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 1333 to transmit and receive wireless signals.
  • car navigation device 1320 can include a plurality of antennas 1337.
  • FIG. 13 illustrates an example in which the car navigation device 1320 includes a plurality of antennas 1337, the car navigation device 1320 may also include a single antenna 1337.
  • car navigation device 1320 can include an antenna 1337 for each wireless communication scheme.
  • the antenna switch 1336 can be omitted from the configuration of the car navigation device 1320.
  • Battery 1338 provides power to various blocks of car navigation device 1320 shown in FIG. 13 via a feeder, which is partially shown as a dashed line in the figure. Battery 1338 accumulates power supplied from the vehicle.
  • the processing circuit 210 described by using FIG. 2 and the measuring unit 211 and the generating unit 212 therein, and the processing circuit 210 described by using FIG. 3 and the measuring unit 211 therein are used.
  • the generating unit 212, the comparing unit 213, and the determining unit 214 may be implemented by the processor 1321, and may be implemented by the wireless communication interface 1333 by using the communication unit 220 described in FIG. 2 and the communication unit 220 described by using FIG.
  • At least a portion of the functionality can also be implemented by processor 1321.
  • the processor 1321 can perform a function of measuring a CSI-RS function and generating a feedback information by executing an instruction stored in the memory 1322.
  • the technology of the present disclosure may also be implemented as an onboard system (or vehicle) 1340 that includes one or more of the car navigation device 1320, the in-vehicle network 1341, and the vehicle module 1342.
  • vehicle module 1342 generates vehicle data such as vehicle speed, engine speed, and fault information, and outputs the generated data to the in-vehicle network 1341.

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Abstract

本公开涉及无线通信系统中的电子设备和无线通信方法。根据本公开的电子设备包括一个或多个处理电路，被配置为执行以下操作：响应于来自无线通信系统中的基站的测量指示，对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及基于测量的结果生成反馈信息，以供基站从一个或多个天线端口中选择用于向电子设备传输CSI-RS的天线端口，反馈信息包含指示一个或多个天线端口中的每一个的占用情况的占用信息。使用根据本公开的电子设备和无线通信方法，可以实现CSI-RS的端口选择，减小小区间和小区内波束赋形CSI-RS的干扰，提高系统的性能，同时只需要很小的信令开销就可以实现。 (图2)

Description

无线通信系统中的电子设备和无线通信方法 技术领域
本公开涉及无线通信的技术领域，具体地涉及无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法。
背景技术
这个部分提供了与本公开有关的背景信息，这不一定是现有技术。
在LTE-A(Long Term Evolution-Advanced，高级长期演进)系统的R10(Release 10，第10版本)版本中引入了CSI-RS(Channel State Information-Reference Signals，信道状态信息参考信号)，用于获取信道状态信息。波束赋形是一种基于天线阵列的信号预处理技术，波束赋形通过调整天线阵列中每个阵元的加权系数产生具有指向性的波束，从而能够获得明显的阵列增益。因此，波束赋形技术在扩大覆盖范围、改善边缘吞吐量以及干扰抑止等方面都有很大的优势。因此，波束赋形的CSI-RS方案可以用作增强的CSI-RS传输方案。
然而，采用波束赋形的CSI-RS方案存在一定的问题。在LTE-A系统中，相邻的小区使用相同的时间和频率资源。因此，当服务小区和相邻的小区使用相同的CSI-RS资源来传输波束赋形CSI-RS并且小区协作不被支持时，将会产生很大的干扰。在现有的波束赋形CSI-RS传输中，支持8个端口的波束赋形，并且有5套CSI-RS传输的资源，因此相邻的小区可以使用不同的资源来传输波束赋形的CSI-RS，这基本可以将波束赋形CSI-RS的干扰问题避免。然而，在未来的LTE-A系统中，可能会存在多于8个端口，例如16个端口。此外，小区将会变得更加密集，当服务小区的相邻小区多于4个时，5套CSI-RS的资源已经不足以避免波束赋形CSI-RS的干扰问题。另一方面，波束赋形一般是针对小区边缘的用户，因此发送功率比较大，一旦相邻的小区采用了相同的CSI-RS资源来发送波束赋形CSI-RS，干扰将会十分严重。另一方面，在服务小区中，使用相同的CSI-RS资源向两个用户设备传输波束赋形CSI-RS，也会产生一定的干扰。
因此，针对以上问题中的至少一个，有必要提出一种新的无线通信技术方案，以解决波束赋形CSI-RS的干扰问题，提高系统的性能。
发明内容
这个部分提供了本公开的一般概要，而不是其全部范围或其全部特征的全面披露。
本公开的目的在于提供一种无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法，使得能够减小波束赋形CSI-RS的干扰，提高系统的性能。
根据本公开的一方面，提供了一种无线通信系统中的电子设备，所述电子设备包括一个或多个处理电路，所述处理电路被配置为执行以下操作：响应于来自所述无线通信系统中的基站的测量指示，对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及基于测量的结果生成反馈信息，以供所述基站从所述一个或多个天线端口中选择用于向所述电子设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
根据本公开的另一方面，提供了一种无线通信系统中的电子设备，所述电子设备包括一个或多个处理电路，所述处理电路被配置为执行以下操作：生成测量指示，以便于所述无线通信系统中的用户设备基于所述测量指示对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；为所述一个或多个天线端口配置CSI-RS资源；以及基于来自所述用户设备的反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
根据本公开的另一方面，提供了一种无线通信系统，所述无线通信系统包括用户设备和基站，其中，所述用户设备包括一个或多个第一处理电路，所述第一处理电路被配置为执行以下操作：响应于来自所述基站的测量指示，对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及基于测量的结果生成反馈信息，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息，并且其中，所述基站包括一个或多个第二处理电路，所述第二处理电路被配置为执行以下操作：生成所述测量指示；为所述一个或多个天线端口配置CSI-RS资源；以及基于所述反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口。
根据本公开的另一方面，提供了一种用于在无线通信系统中进行无线通信的方法，包括：响应于来自所述无线通信系统中的基站的测量指示，通过所述无线通信系统中的用户设备对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及基于测量的结果生成反馈信息，以供所述基站从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
根据本公开的另一方面，提供了一种用于在无线通信系统中进行无线通信的方法，包括：生成测量指示，以便于所述无线通信系统中的用户设备基于所述测量指示对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；为所述一个或多个天线端口配置CSI-RS资源；以及基于来自所述用户设备的反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
使用根据本公开的无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法，可以在发送CSI-RS之前对一个或多个天线端口上的CSI-RS进行测量，以选择合适的天线端口来传输CSI-RS。这样一来，就可以实现CSI-RS的端口选择，减小CSI-RS的干扰，提高系统的性能，同时只需要很小的信令开销就可以实现。
从在此提供的描述中，进一步的适用性区域将会变得明显。这个概要中的描述和特定例子只是为了示意的目的，而不旨在限制本公开的范围。
附图说明
在此描述的附图只是为了所选实施例的示意的目的而非全部可能的实施，并且不旨在限制本公开的范围。在附图中：
图1(a)是图示存在波束赋形CSI-RS干扰的场景的示意图；
图1(b)是图示存在波束赋形CSI-RS干扰的另一个场景的示意图；
图2是图示根据本公开的实施例的无线通信系统中的电子设备的结构的框图；
图3是图示根据本公开的另一实施例的无线通信系统中的电子设备 的结构的框图；
图4是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图；
图5是图示根据本公开的实施例的无线通信系统的结构的框图；
图6是图示根据本公开的实施例的无线通信方法的过程示意图；
图7是图示根据本公开的实施例的无线通信方法的时序图；
图8是图示根据本公开的实施例的无线通信方法的流程图；
图9是图示根据本公开的另一实施例的无线通信方法的流程图；
图10是示出适用于本公开的eNB(evolution Node Base Station，演进节点基站)的示意性配置的第一示例的框图；
图11是示出适用于本公开的eNB的示意性配置的第二示例的框图；
图12是示出适用于本公开的智能电话的示意性配置的示例的框图；以及
图13是示出适用于本公开的汽车导航设备的示意性配置的示例的框图。
虽然本公开容易经受各种修改和替换形式，但是其特定实施例已作为例子在附图中示出，并且在此详细描述。然而应当理解的是，在此对特定实施例的描述并不打算将本公开限制到公开的具体形式，而是相反地，本公开目的是要覆盖落在本公开的精神和范围之内的所有修改、等效和替换。要注意的是，贯穿几个附图，相应的标号指示相应的部件。
具体实施方式
现在参考附图来更加充分地描述本公开的例子。以下描述实质上只是示例性的，而不旨在限制本公开、应用或用途。
提供了示例实施例，以便本公开将会变得详尽，并且将会向本领域技术人员充分地传达其范围。阐述了众多的特定细节如特定部件、装置和方法的例子，以提供对本公开的实施例的详尽理解。对于本领域技术人员而言将会明显的是，不需要使用特定的细节，示例实施例可以用许多不同的形式来实施，它们都不应当被解释为限制本公开的范围。在某些示例实施例中，没有详细地描述众所周知的过程、众所周知的结构和众所周知的 技术。
本公开所涉及的UE(User Equipment，用户设备)包括但不限于移动终端、计算机、车载设备等具有无线通信功能的终端。进一步，取决于具体所描述的功能，本公开所涉及的UE还可以是UE本身或其中的部件如芯片。此外，类似地，本公开中所涉及的基站可以例如是eNB(evolution Node Base Station，演进节点基站)或者是eNB中的部件如芯片。进而，本公开的技术方案例如可以用于FDD(Frequency Division Duplexing，频分双工)系统。
图1(a)是图示存在波束赋形CSI-RS干扰的场景的示意图。如图1(a)所示，eNB1和eNB2是相邻的两个小区的基站，并且eNB1和eNB2都使用了端口15产生波束来传输波束赋形的CSI-RS，因此会产生干扰。由于波束赋形通常用于小区边缘的用户，发送功率较大，因此eNB1和eNB2发送的CSI-RS之间的干扰不能被忽略。
图1(b)是图示存在波束赋形CSI-RS干扰的另一个场景的示意图。如图1(b)所示，在eNB覆盖范围内存在两个用户设备。如果eNB都使用端口15产生波束来向两个用户设备传输波束赋形的CSI-RS，那么将产生干扰。如果这两个用户设备距离比较近，或者位于小区边缘使得波束赋形的发送功率较大，那么传输的这两个CSI-RS之间的干扰不能被忽略。
针对以上问题，提出了根据本公开的技术方案。图2图示了根据本公开的实施例的无线通信系统中的电子设备200的结构。
如图2所示，电子设备200可以包括处理电路210。需要说明的是，电子设备200既可以包括一个处理电路210，也可以包括多个处理电路210。另外，电子设备200还可以包括作为收发机的通信单元220等。
进一步，处理电路210可以包括各种分立的功能单元以执行各种不同的功能和/或操作。需要说明的是，这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图2所示，处理电路210可以包括测量单元211和生成单元212。
在如图2所示的电子设备200中，响应于来自无线通信系统中的基站的测量指示，测量单元211可以对一个或多个天线端口上的CSI-RS分别进行测量。这里，无线通信系统中的基站的测量指示可以通过通信单元220来接收。
另外，生成单元212可以基于测量的结果生成反馈信息，以供基站从一个或多个天线端口中选择用于向电子设备200传输CSI-RS的天线端口。在这里，反馈信息可以通过通信单元220发送到基站。
这里，反馈信息可以包含指示一个或多个天线端口中的每一个的占用情况的占用信息。
需要说明的是，反馈信息所包含的占用信息仅仅是电子设备200确定的一个或多个天线端口中的每一个的占用情况，并不是这一个或多个天线端口实际的占用情况。例如，当某个天线端口实际上已经被占用时，如果该天线端口上的发送功率较低或者由于一些其它原因，使得电子设备200判断出该天线端口未被占用，那么电子设备200的生成单元212所生成的反馈信息将指示该天线端口未被占用。
使用根据本公开的实施例的电子设备200，可以在向电子设备200传输CSI-RS之前，由电子设备200对一个或多个天线端口上的CSI-RS分别进行测量并生成反馈信息，以供基站选择用于传输CSI-RS的天线端口。这样一来，就可以选择合适的天线端口来传输CSI-RS，从而避免CSI-RS的干扰，提高系统的性能。
根据本公开的一个实施例，进行测量的一个或多个天线端口可以是相邻的小区的一个或多个天线端口，也就是说，电子设备200可以对相邻的小区的一个或多个天线端口上的CSI-RS分别进行测量，进而获得相邻的小区的一个或多个天线端口中的每一个的占用情况。基站可以为电子设备200选择未被相邻小区占用的天线端口来传输CSI-RS。
例如，在图1(a)所示的场景中，eNB1覆盖范围内的UE响应于来自eNB1的测量指示，对相邻小区的一个或多个(例如全部的8个天线端口)天线端口上的CSI-RS分别进行测量，基于测量的结果生成反馈信息，包含指示端口15已经被eNB2所在的邻小区占用的占用信息。eNB1在选择向UE传输CSI-RS的天线端口时可以不选择端口15。这样一来，就避免了eNB1和eNB2在相同的天线端口传输CSI-RS，进而避免波束赋形CSI-RS的干扰。
根据本公开的另一个实施例，进行测量的一个或多个天线端口也可以是本小区的一个或多个天线端口，也就是说，电子设备200可以对本小区的一个或多个天线端口上的CSI-RS分别进行测量，进而获得本小区的一个或多个天线端口中的每一个的占用情况。基站可以为电子设备200 选择未被本小区其它电子设备占用的天线端口来传输CSI-RS。
例如，在图1(b)所示的场景中，eNB覆盖范围内的UE1响应于来自eNB的测量指示，对本小区的一个或多个(例如全部的8个天线端口)天线端口上的CSI-RS分别进行测量，基于测量的结果生成反馈信息，包含指示端口15已经被UE2占用的占用信息。eNB在选择向UE1传输CSI-RS的天线端口时可以不选择端口15。这样一来，就避免了eNB在相同的天线端口为UE1和UE2传输CSI-RS，进而避免波束赋形CSI-RS的干扰。
根据本公开的实施例，一个或多个天线端口的数目为n个，其中n为自然数，并且其中，占用信息包括具有n个比特位的比特图，其中每个比特位对应于一个或多个天线端口中的一个天线端口。
在这里，电子设备200(例如确定单元，未示出)可以根据对一个或多个天线端口上的CSI-RS的测量结果来确定一个或多个天线端口是否被占用，生成单元212根据一个或多个天线端口是否被占用的信息生成反馈信息。例如，可以用“1”和“0”来表示对应的天线端口是否被占用。当某个天线端口被占用时，将比特图中该天线端口对应的比特位置“1”；当某个天线端口未被占用时，将比特图中该天线端口对应的比特位置“0”。当基站接收到这样的比特图时，可以清楚地了解对于该电子设备200而言一个或多个天线端口的占用情况，然后选择用于向电子设备200传输CSI-RS的天线端口，例如选择未被占用的天线端口来传输CSI-RS。
采用这种比特图的方式，方便简单，用较小的信令开销就能够表示出n个天线端口的占用情况。
根据本公开的另一个实施例，占用信息可以包括对一个或多个天线端口上的CSI-RS的测量的量，例如RSRP(Reference Signal Receiving Power，参考信号接收功率)、RSRQ(Reference Signal Receiving Quality,参考信号接收质量)、接收信号强度指示RSSI(Received Signal Strength Indication，接收信号强度指示)和CQI(Channel Quality Indication，信道质量指示)等。在这里，电子设备200将表征一个或多个天线端口的占用信息的CSI-RS的测量的量反馈到基站，然后由基站根据测量的量来确定一个或多个天线端口是否被占用，进而选择用于向电子设备200传输CSI-RS的天线端口，例如，基站可以选择CSI-RS测量的量最小的天线端口来传输CSI-RS。
根据本公开的另一个实施例，占用信息可以包括对一个或多个天线端口上的CSI-RS的测量的量，例如RSRP、RSRQ、RSSI和CQI等的排序结果。在这里，电子设备200可以将不同天线端口上的CSI-RS的测量的量从小到大或者从大到小进行排序，并将排序结果反馈到基站，由基站根据排序结果来选择用于向电子设备200传输CSI-RS的天线端口，例如，基站可以选择CSI-RS测量的量最小的天线端口来传输CSI-RS。
图3是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图。
如图3所示，电子设备200可以包括处理电路210和通信单元220。处理电路210可以包括测量单元211、生成单元212、比较单元213和确定单元214。这里，测量单元211、生成单元212和通信单元220可以是图2中所示的测量单元211、生成单元212和通信单元220。在如图3所示的电子设备200中，比较单元213可以将测量单元211测量的结果与预定阈值进行比较，确定单元214可以根据比较单元213比较的结果来确定占用信息。
在这里，预定的阈值可以由基站通知电子设备200，例如在基站向电子设备200发送测量指示后，继续向电子设备200发送阈值信息。预定的阈值也可以是电子设备200事先知晓的，例如预先写在电子设备200的芯片中。
此外，预定阈值可以包括一个或者多个阈值。当预定阈值包括一个阈值时，一个或多个天线端口上的CSI-RS的测量结果的阈值都相同，也就是说，比较单元213将一个或多个天线端口上的CSI-RS的测量结果都与该阈值进行比较；当存在多个天线端口时，预定阈值也可以包括多个阈值，多个阈值分别对应于多个天线端口上的CSI-RS的测量结果，比较单元213将多个天线端口上的CSI-RS的测量结果分别与其各自对应的阈值进行比较。
根据本公开的一个实施例，处理电路210对CSI-RS进行测量而获得的量包括RSRP、RSRQ、RSSI和CQI中的至少一种。上述信息都是反映天线端口的接收质量的参数，因而可以反映出天线端口的占用情况。
根据本公开的一个实施例，当对CSI-RS进行测量而获得的量大于预定阈值时，处理电路210确定传输CSI-RS的天线端口被占用。
根据本公开的实施例，如果处理电路210确定一个或多个天线端口 都被占用，即对一个或多个天线端口上的CSI-RS进行测量而获得的量都大于预定阈值，那么处理电路210可以将对CSI-RS进行测量而获得的量最小的天线端口在比特图中对应的比特位置“0”。这样，基站可以选择这个对CSI-RS进行测量而获得的量最小的天线端口来传输CSI-RS。
在这里，可以通过基站为电子设备200所在的当前小区的一个或者多个天线端口配置ZP(Zero Power，零功率)CSI-RS资源的方式来使得电子设备200测量相邻小区的一个或者多个天线端口上的CSI-RS。此时，当前小区的一个或多个天线端口都配置了ZP CSI-RS资源，如果测量单元211测量到了这一个或多个天线端口上的CSI-RS，那么相邻小区的这一个或多个天线端口被占用的可能性较大。因此可以根据实际情况设定预定阈值，当测量的结果大于预定阈值时，判定对应的天线端口被相邻的小区占用。
根据本公开的实施例，基站可以为电子设备200所在的当前小区的全部天线端口配置ZP CSI-RS资源，那么电子设备200可以测量相邻小区的全部天线端口上的CSI-RS。此外，基站也可以为电子设备200所在的当前小区的部分天线端口配置ZP CSI-RS资源，那么电子设备200可以测量相邻小区的对应的部分天线端口上的CSI-RS。例如，基站如果为电子设备200所在的当前小区的天线端口1-4配置了ZP CSI-RS资源，那么电子设备200就可以测量相邻小区的天线端口1-4上的CSI-RS。
需要说明的是，在本公开的各个实施例中，用示例性的方式示出了天线端口号，例如0号天线端口、1号天线端口、天线端口1-4等等。而在现有的系统中，CSI-RS的天线端口号是15-22。本公开的各个实施例中的天线端口号只是为了说明发明主旨用，与现有的系统中采用的天线端口号并不冲突。进一步，在未来的系统中，如果重新定义CSI-RS端口号为其他数值，本发明依然适用。
根据本公开的实施例，当电子设备200需要测量本小区的一个或多个天线端口上的CSI-RS并且当前小区与相邻小区使用正交的CSI-RS资源时，那么当前小区与相邻小区之间不存在CSI-RS的干扰，因此基站无需为电子设备200所在的当前小区的一个或者多个天线端口配置ZP CSI-RS资源。如果测量单元211测量到了本小区的一个或者多个天线端口上的CSI-RS，那么这一个或多个天线端口已经被本小区的其它用户设备占用的可能性较大。因此可以根据实际情况设定预定阈值，当比较单元213确定测量的结果大于预定阈值时，确定单元214判定对应的天线端口 被本小区的其它用户设备占用；当比较单元213确定测量的结果小于或等于预定阈值时，确定单元214判定对应的天线端口没有被本小区的其它用户占用，或者被本小区的其它用户占用但是不足以对电子设备200产生有害干扰。
根据本公开的实施例，当电子设备200需要测量本小区的一个或多个天线端口上的CSI-RS并且当前小区没有与相邻小区使用正交的CSI-RS资源时，首先需要基站为电子设备200所在的当前小区的一个或者多个天线端口配置ZP CSI-RS资源以测量相邻小区的一个或者多个天线端口上的CSI-RS，从而确定一个或多个天线端口被相邻小区占用的情况，这个步骤与前面所介绍的类似。接下来，本小区的一个或者多个天线端口正常发送CSI-RS以测量本小区的一个或者多个天线端口上的CSI-RS。此时，如果测量单元211测量到了本小区的一个或者多个天线端口上的CSI-RS，那么这一个或多个天线端口可能被相邻小区占用，也可能被本小区的其它用户设备占用。接下来，确定单元214可以分析两次测量的结果，以确定本小区的一个或多个天线端口被本小区的其它用户设备占用的情况。
根据本公开的一个实施例，CSI-RS仅通过部分天线端口传输并且被波束赋形。
在现有的波束赋形方案中，可以一个天线端口对应一个波束，也可以多个天线端口对应一个波束。根据本公开的实施例，当一个天线端口对应一个波束时，电子设备200分别测量一个或多个天线端口中的每一个天线端口上的CSI-RS；当多个天线端口对应一个波束时，电子设备200也可以将多个天线端口作为一组来测量CSI-RS。
根据本公开的实施例，当CSI-RS被波束赋形时，占用信息包括具有n/m个比特位的比特图，其中n表示一个或多个天线端口的数目，m表示每m个天线端口对应一个波束，n和m都为自然数，并且比特图中的每个比特位对应于一个波束所对应的m个天线端口。也就是说，比特位为“1”表示其对应的m个天线端口被占用，比特位为“0”表示其对应的m个天线端口未被占用。由此可见，前面所述的占用信息包括具有n个比特位的比特图是此处当m为1时的一个特例。
在没有引入波束赋形的CSI-RS的现有的方案中，基站只为电子设备所在的当前小区的全部天线端口配置ZP CSI-RS或NZP(Non-Zero Power，非零功率)CSI-RS资源，并利用全部天线端口进行CSI-RS发 送，电子设备也只将小区的全部天线端口作为一个整体一起测量CSI-RS并进行CSI报告，由于根据通信协议默认全部天线端口均用于发送CSI-RS而并不关心小区的每个天线端口的占用情况。而在本公开中，基站可以为电子设备200所在的当前小区的部分天线端口配置ZP CSI-RS，电子设备200也可以对相邻小区的各个天线端口分别测量CSI-RS，因此能够获知相邻小区的每个天线端口的占用情况，如果需要，也能够获知相邻小区的部分天线端口的占用情况从而支持基站针对各个UE的动态端口选择，即用户设备特定的(UE-Specific)的端口选择。
根据本公开的一个实施例，测量指示包含在无线资源控制RRC信令中。这是因为RRC信令属于高层信令，相比于DCI(Downlink Control Information，下行控制信息)信令等物理层信令，RRC信令配置周期长，资源更多，更有利于承载测量指示。
在这里，定义了一个新的请求AllPortMeasRequest，用于指示电子设备200对一个或多个天线端口上的CSI-RS分别进行测量。根据本公开的实施例，AllPortMeasRequest请求可以占用1比特。具体地，可以当AllPortMeasRequest＝1时，指示电子设备200对一个或多个天线端口上的CSI-RS分别进行测量。当AllPortMeasRequest＝0时，与现有技术类似，可以指示电子设备200对指定天线端口上的CSI-RS进行测量。类似地，也可以定义一个新的响应AllPortMeasResponse，用于承载电子设备200的反馈信息。
需要说明的是，上述的无线通信系统可以是LTE-A蜂窝通信系统，电子设备200可以是无线通信系统中的用户设备。
图4是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图。
如图4所示，电子设备400可以包括处理电路410。需要说明的是，电子设备400既可以包括一个处理电路410，也可以包括多个处理电路410。另外，电子设备400还可以包括诸如收发机之类的通信单元420等。
如上面提到的那样，同样地，处理电路410也可以包括各种分立的功能单元以执行各种不同的功能和/或操作。这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图4所示，处理电路410可以包括生成单元411、配置单元412和选择单元413。
生成单元411生成测量指示，以便于无线通信系统中的用户设备基于测量指示对一个或多个天线端口上的CSI-RS分别进行测量。例如，可以通过通信单元420向用户设备发送测量指示。
配置单元412为一个或多个天线端口配置CSI-RS资源。
基于来自用户设备的反馈信息，选择单元413可以从一个或多个天线端口中选择用于向用户设备传输CSI-RS的天线端口。例如，可以通过通信单元420从用户设备接收反馈信息。
这里，反馈信息包含指示一个或多个天线端口中的每一个的占用情况的占用信息。
优选地，一个或多个天线端口的数目为n个，其中n为自然数，并且占用信息包括具有n个比特位的比特图，其中每个比特位对应于一个或多个天线端口中的一个天线端口。
优选地，CSI-RS仅通过部分天线端口传输并且被波束赋形。
优选地，处理电路410将测量指示包含在RRC信令中。
优选地，处理电路410生成测量指示，以指示用户设备测量邻小区的全部天线端口上的CSI-RS，并且处理电路410为用户设备所在的当前小区的全部天线端口配置ZP CSI-RS资源。
优选地，测量指示占用1个比特位。
优选地，处理电路410中的配置单元412进一步被配置为执行以下操作：为选择的用于向用户设备传输CSI-RS的天线端口重新配置NZP CSI-RS资源。
根据本公开的实施例，可以选择一个天线端口用于向用户设备传输CSI-RS，也可以选择多个，例如一对天线端口用于向用户设备传输CSI-RS。在选择一个天线端口的情况下，当前小区和邻小区都具有8个天线端口时，可以用index信息来指示选择的用于向用户设备传输CSI-RS的天线端口，例如index＝0表示选择0号天线端口，index＝1表示选择1号天线端口，等等。当前小区和邻小区都具有多于8个，例如16个天线端口时，可以增加index的比特位来承载端口指示信息。在选择一对天线端口的情况下，当前小区和邻小区都具有8个天线端口时，也可以用index信息来指示选择的用于向用户设备传输CSI-RS的天线端口对。例如，基站与用户设备预先约定好index＝0表示天线端口对(0，1)，index＝1表 示天线端口对(2，3)，index＝2表示天线端口对(4，5)，index＝3表示天线端口对(6，7)，然后用2比特来携带index信息。当前小区和邻小区都具有多于8个，例如16个天线端口时，可以增加index的比特位来承载端口指示信息。
根据本公开的实施例，当选择单元413从一个或多个天线端口中选择了用于向用户设备传输CSI-RS的天线端口，配置单元412可以为所选择的天线端口重新配置NZP CSI-RS资源。接下来，基于重新配置的NZP CSI-RS资源，用户设备对选择的天线端口上的CSI-RS进行测量，然后向电子设备400反馈CSI。
优选地，处理电路420将选择的用于向用户设备传输CSI-RS的天线端口包含在RRC信令中。
根据本公开的实施例，修改了IE PhysicalConfigDedicated，使其添加了PhysicalConfigDedicated-r13。PhysicalConfigDedicated-r13的定义如下：
PhysicalConfigDedicated-r13::＝
SEQUENCE{
PortSelectionResult     CHOICE{
release NULL,
setup BIT STRING(3).
}
其中，PortSelectionResult为从一个或多个天线端口中选择的用于向用户设备传输CSI-RS的天线端口。BIT STRING(3)表示在当前小区和邻小区都具有8个天线端口的情况下，需要3比特来指示8个天线端口。而在未来的LTE-A系统中，当前小区和邻小区可能具有多于8个的天线端口，例如16个天线端口，此时需要4比特来指示16个天线端口，BIT STRING为4。也就是说，BIT STRING表示用于指示CSI-RS天线端口的比特数。
进一步，也需要修改相应的RRC流程，如下：
1>如果radioResourceConfigDedicated包含了physicalConfigDedicated；
2>重配置物理信道的配置；
3>如果physicalConfigDedicated中配置了PortSelectionResult，基站会在所选择的端口上传输信息。
优选地，电子设备400为基站，并且电子设备400中的通信单元420为收发机，收发机被配置为与用户设备进行通信。
图5是图示根据本公开的实施例的无线通信系统的结构的框图。
如图5所示，无线通信系统包括电子设备200和电子设备400，其中电子设备200可以是用户设备，并且电子设备400可以是基站，其中，电子设备200包括一个或多个处理电路210和通信单元220，处理电路210包括测量单元211和生成单元212。响应于来自电子设备400的测量指示，测量单元211对一个或多个天线端口上的CSI-RS分别进行测量。生成单元212基于测量的结果生成反馈信息，反馈信息包含指示一个或多个天线端口中的每一个的占用情况的占用信息。电子设备400包括一个或多个处理电路410和通信单元420。处理电路410包括生成单元411、配置单元412和选择单元413。生成单元411生成测量指示。配置单元412为一个或多个天线端口配置CSI-RS资源。基于反馈信息，选择单元413从一个或多个天线端口中选择用于向电子设备200传输CSI-RS的天线端口。
图6是图示根据本公开的实施例的无线通信方法的过程示意图。
如图6所示，定了一个新的请求AllPortMeasRequest，当AllPortMeasRequest＝1时，基站为用户设备所在的当前小区的全部(8个)天线端口配置ZP CSI-RS资源，以指示用户设备对邻小区全部天线端口的CSI-RS进行测量。
接下来，用户设备对邻小区全部天线端口上的CSI-RS分别进行测量。
接下来，用户设备基于测量的结果生成反馈信息，定义了一个新的响应AllPortMeasResponse来承载反馈信息。其中，反馈信息中包含了指示邻小区的8个天线端口中的每一个的占用情况的占用信息，该占用信息包括具有8个比特位的比特图。
接下来，基站基于来自用户设备的反馈信息，从8个天线端口中选择用于向用户设备传输CSI-RS的天线端口，并为选择的天线端口重新配置NZP CSI-RS资源，过程结束。
当AllPortMeasRequest不为1，例如0时，基站为选择的天线端口配置NZP CSI-RS资源。
接下来，用户设备对被选择的天线端口上的CSI-RS进行测量。
接下来，用户设备反馈CSI信息到基站，过程结束。
图7是图示根据本公开的实施例的无线通信方法的时序图。
如图7所示，首先，eNodeB向UE发送AllPortMeasRequest＝1的信令，以指示UE对邻小区全部天线端口上的CSI-RS分别进行测量。
接下来，eNodeB为UE所在的当前小区的全部天线端口配置ZP CSI-RS资源。
接下来，UE对邻小区全部天线端口上的CSI-RS分别进行测量。
接下来，UE通过AllPortMeasResponse信令向eNodeB发送反馈信息。
接下来，eNodeB从全部天线端口中选择用于向UE传输CSI-RS的天线端口，并为选择的天线端口重新配置NZP CSI-RS资源。
接下来，eNodeB向UE发送AllPortMeasRequest＝0的信令，以指示UE对所选择的天线端口的CSI-RS进行测量。
接下来，eNodeB向UE发送重新配置的NZP CSI-RS资源。
接下来，UE利用NZP CSI-RS资源测量选择的天线端口的CSI-RS。
最后，UE向eNodeB发送CSI反馈信息。
这里，上述的eNodeB向UE发送AllPortMeasRequest＝0的信令的步骤可以省略。当eNodeB向UE发送重新配置的NZP CSI-RS资源时，UE即可判断需要测量指定天线端口上的CSI-RS信息。
值得注意的是，在图6和图7所示的实施例中，UE对邻小区全部的天线端口的CSI-RS进行了测量，在图6所示的例子中还指定了邻小区全部的天线端口数为8个，但是本发明并不限于此。针对UE对邻小区部分天线端口的CSI-RS进行测量，或者邻小区全部天线端口数不为8的情况，其过程和时序图与图6和图7类似，本发明在此不再赘述。
综上所述，根据本公开的实施例，对于小区间传输波束赋形CSI-RS的场景，在向用户设备发送波束赋形CSI-RS之前，可以测量邻小区天线端口的占用情况，从而选择没有被邻小区占用的端口来传输波束赋形 CSI-RS。这样一来，可以支持波束赋形CSI-RS的端口选择，避免了小区间波束赋形CSI-RS的干扰，提高了系统的性能。对于小区内传输波束赋形CSI-RS的场景，在向用户设备发送波束赋形CSI-RS之前，可以测量本小区天线端口的占用情况，从而选择没有被本小区其它用户设备占用的端口来传输波束赋形CSI-RS。这样一来，可以在小区内部实现波束赋形CSI-RS的端口选择和复用，在复用时又避免了波束赋形CSI-RS之间的干扰。此外，对于上述两种场景，用户设备都只需要反馈一个比特图，用很小的信令开销就可以实现。
接下来参考图8来描述根据本公开的实施例的用于在无线通信系统中进行无线通信的方法。图8示出了根据本公开的实施例的无线通信方法的流程图。
如图8所示，首先，在步骤S810中，响应于来自无线通信系统中的基站的测量指示，通过无线通信系统中的用户设备对一个或多个天线端口上的CSI-RS分别进行测量。
然后，在步骤S820中，基于测量的结果生成反馈信息，以供基站从一个或多个天线端口中选择用于向用户设备传输CSI-RS的天线端口，反馈信息包含指示一个或多个天线端口中的每一个的占用情况的占用信息。
优选地，一个或多个天线端口的数目为n个，其中n为自然数，并且占用信息包括具有n个比特位的比特图，其中每个比特位对应于一个或多个天线端口中的一个天线端口。
优选地，步骤S820还包括：将测量的结果与预定阈值进行比较；以及根据比较的结果来确定占用信息。
优选地，CSI-RS仅通过部分天线端口传输并且被波束赋形。
优选地，测量指示包含在RRC信令中。
优选地，对CSI-RS进行测量而获得的量包括RSRP、RSRQ、RSSI和CQI中的至少一种。
优选地，根据比较的结果来确定占用信息还包括：当对CSI-RS进行测量而获得的量大于预定阈值时，确定传输CSI-RS的天线端口被占用。
优选地，无线通信系统为LTE-A蜂窝通信系统。
接下来参考图9来描述根据本公开的另一实施例的用于在无线通信 系统中进行无线通信的方法。图9示出了根据本公开的另一个实施例的无线通信方法的流程图。
如图9所示，首先，在步骤S910中，生成测量指示，以便于无线通信系统中的用户设备基于测量指示对一个或多个天线端口上的CSI-RS分别进行测量。
然后，在步骤S920中，为一个或多个天线端口配置CSI-RS资源。
最后，在步骤S930中，基于来自用户设备的反馈信息，从一个或多个天线端口中选择用于向用户设备传输CSI-RS的天线端口，反馈信息包含指示一个或多个天线端口中的每一个的占用情况的占用信息。
优选地，一个或多个天线端口的数目为n个，其中n为自然数，并且占用信息包括具有n个比特位的比特图，其中每个比特位对应于一个或多个天线端口中的一个天线端口。
优选地，CSI-RS仅通过部分天线端口传输并且被波束赋形。
优选地，将测量指示包含在RRC信令中。
优选地，步骤S910包括：生成测量指示以指示用户设备测量邻小区的全部天线端口上的CSI-RS，并且步骤S920包括：为用户设备所在的当前小区的全部天线端口配置ZP CSI-RS资源。
优选地，该无线通信方法还包括：为选择的用于向用户设备传输CSI-RS的天线端口重新配置NZP CSI-RS资源。
优选地，测量指示占用1个比特位。
根据本公开的实施例的用于在无线通信系统中进行无线通信的方法的上述各个步骤的各种具体实施方式前面已经作过详细描述，在此不再重复说明。
本公开的技术能够应用于各种产品。例如，本公开中提到的基站可以被实现为任何类型的演进型节点B(eNB)，诸如宏eNB和小eNB。小eNB可以为覆盖比宏小区小的小区的eNB，诸如微微eNB、微eNB和家庭(毫微微)eNB。代替地，基站可以被实现为任何其他类型的基站，诸如NodeB和基站收发台(BTS)。基站可以包括：被配置为控制无线通信的主体(也称为基站设备)；以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外，下面将描述的各种类型的终端均可以通过暂时地或半持久性地执行基站功能而作为基站工作。
例如，本公开中提到的UE可以被实现为移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)。UE还可以被实现为执行机器对机器(M2M)通信的终端(也称为机器类型通信(MTC)终端)。此外，UE可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的集成电路模块)。
图10是示出可以应用本公开的技术的eNB的示意性配置的第一示例的框图。eNB 1000包括一个或多个天线1010以及基站设备1020。基站设备1020和每个天线1010可以经由RF线缆彼此连接。
天线1010中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件)，并且用于基站设备1020发送和接收无线信号。如图10所示，eNB 1000可以包括多个天线1010。例如，多个天线1010可以与eNB 1000使用的多个频带兼容。虽然图10示出其中eNB 1000包括多个天线1010的示例，但是eNB 1000也可以包括单个天线1010。
基站设备1020包括控制器1021、存储器1022、网络接口1023以及无线通信接口1025。
控制器1021可以为例如CPU或DSP，并且操作基站设备1020的较高层的各种功能。例如，控制器1021根据由无线通信接口1025处理的信号中的数据来生成数据分组，并经由网络接口1023来传递所生成的分组。控制器1021可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组，并传递所生成的捆绑分组。控制器1021可以具有执行如下控制的逻辑功能：该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的eNB或核心网节点来执行。存储器1022包括RAM和ROM，并且存储由控制器1021执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口1023为用于将基站设备1020连接至核心网1024的通信接口。控制器1021可以经由网络接口1023而与核心网节点或另外的eNB进行通信。在此情况下，eNB 1000与核心网节点或其他eNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口1023还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口1023为无线通信接口，则与由无线通信接口1025使用的频带相比，网络接口1023可以使用较高频带用于无线通信。
无线通信接口1025支持任何蜂窝通信方案(诸如长期演进(LTE)和LTE-先进)，并且经由天线1010来提供到位于eNB 1000的小区中的终端的无线连接。无线通信接口1025通常可以包括例如基带(BB)处理器1026和RF电路1027。BB处理器1026可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器1021，BB处理器1026可以具有上述逻辑功能的一部分或全部。BB处理器1026可以为存储通信控制程序的存储器，或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器1026的功能改变。该模块可以为插入到基站设备1020的槽中的卡或刀片。可替代地，该模块也可以为安装在卡或刀片上的芯片。同时，RF电路1027可以包括例如混频器、滤波器和放大器，并且经由天线1010来传送和接收无线信号。
如图10所示，无线通信接口1025可以包括多个BB处理器1026。例如，多个BB处理器1026可以与eNB 1000使用的多个频带兼容。如图10所示，无线通信接口1025可以包括多个RF电路1027。例如，多个RF电路1027可以与多个天线元件兼容。虽然图10示出其中无线通信接口1025包括多个BB处理器1026和多个RF电路1027的示例，但是无线通信接口1025也可以包括单个BB处理器1026或单个RF电路1027。
图11是示出可以应用本公开的技术的eNB的示意性配置的第二示例的框图。eNB 1130包括一个或多个天线1140、基站设备1150和RRH1160。RRH 1160和每个天线1140可以经由RF线缆而彼此连接。基站设备1150和RRH 1160可以经由诸如光纤线缆的高速线路而彼此连接。
天线1140中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)并且用于RRH 1160发送和接收无线信号。如图11所示，eNB 1130可以包括多个天线1140。例如，多个天线1140可以与eNB 1130使用的多个频带兼容。虽然图11示出其中eNB 1130包括多个天线1140的示例，但是eNB 1130也可以包括单个天线1140。
基站设备1150包括控制器1151、存储器1152、网络接口1153、无线通信接口1155以及连接接口1157。控制器1151、存储器1152和网络接口1153与参照图10描述的控制器1021、存储器1022和网络接口1023相同。
无线通信接口1155支持任何蜂窝通信方案(诸如LTE和LTE-先 进)，并且经由RRH 1160和天线1140来提供到位于与RRH 1160对应的扇区中的终端的无线通信。无线通信接口1155通常可以包括例如BB处理器1156。除了BB处理器1156经由连接接口1157连接到RRH 1160的RF电路1164之外，BB处理器1156与参照图10描述的BB处理器1026相同。如图11所示，无线通信接口1155可以包括多个BB处理器1156。例如，多个BB处理器1156可以与eNB 1130使用的多个频带兼容。虽然图11示出其中无线通信接口1155包括多个BB处理器1156的示例，但是无线通信接口1155也可以包括单个BB处理器1156。
连接接口1157为用于将基站设备1150(无线通信接口1155)连接至RRH 1160的接口。连接接口1157还可以为用于将基站设备1150(无线通信接口1155)连接至RRH 1160的上述高速线路中的通信的通信模块。
RRH 1160包括连接接口1161和无线通信接口1163。
连接接口1161为用于将RRH 1160(无线通信接口1163)连接至基站设备1150的接口。连接接口1161还可以为用于上述高速线路中的通信的通信模块。
无线通信接口1163经由天线1140来传送和接收无线信号。无线通信接口1163通常可以包括例如RF电路1164。RF电路1164可以包括例如混频器、滤波器和放大器，并且经由天线1140来传送和接收无线信号。如图11所示，无线通信接口1163可以包括多个RF电路1164。例如，多个RF电路1164可以支持多个天线元件。虽然图11示出其中无线通信接口1163包括多个RF电路1164的示例，但是无线通信接口1163也可以包括单个RF电路1164。
在图10和图11所示的eNB 1000和eNB 1130中，通过使用图4所描述的处理电路410以及其中的生成单元411、配置单元412和选择单元413可以由控制器1021和/或控制器1151实现，并且通过使用图4所描述的通信单元420可以由无线通信接口1025以及无线通信接口1155和/或无线通信接口1163实现。功能的至少一部分也可以由控制器1021和控制器1151实现。例如，控制器1021和/或控制器1151可以通过执行相应的存储器中存储的指令而执行生成测量指示功能、配置CSI-RS资源功能和选择天线端口功能。
图12是示出可以应用本公开的技术的智能电话1200的示意性配置 的示例的框图。智能电话1200包括处理器1201、存储器1202、存储装置1203、外部连接接口1204、摄像装置1206、传感器1207、麦克风1208、输入装置1209、显示装置1210、扬声器1211、无线通信接口1212、一个或多个天线开关1215、一个或多个天线1216、总线1217、电池1218以及辅助控制器1219。
处理器1201可以为例如CPU或片上系统(SoC)，并且控制智能电话1200的应用层和另外层的功能。存储器1202包括RAM和ROM，并且存储数据和由处理器1201执行的程序。存储装置1203可以包括存储介质，诸如半导体存储器和硬盘。外部连接接口1204为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话1200的接口。
摄像装置1206包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS))，并且生成捕获图像。传感器1207可以包括一组传感器，诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风1208将输入到智能电话1200的声音转换为音频信号。输入装置1209包括例如被配置为检测显示装置1210的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关，并且接收从用户输入的操作或信息。显示装置1210包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器)，并且显示智能电话1200的输出图像。扬声器1211将从智能电话1200输出的音频信号转换为声音。
无线通信接口1212支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口1212通常可以包括例如BB处理器1213和RF电路1214。BB处理器1213可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路1214可以包括例如混频器、滤波器和放大器，并且经由天线1216来传送和接收无线信号。无线通信接口1212可以为其上集成有BB处理器1213和RF电路1214的一个芯片模块。如图12所示，无线通信接口1212可以包括多个BB处理器1213和多个RF电路1214。虽然图12示出其中无线通信接口1212包括多个BB处理器1213和多个RF电路1214的示例，但是无线通信接口1212也可以包括单个BB处理器1213或单个RF电路1214。
此外，除了蜂窝通信方案之外，无线通信接口1212可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下，无线通信接口1212可以包括针对每种无 线通信方案的BB处理器1213和RF电路1214。
天线开关1215中的每一个在包括在无线通信接口1212中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线1216的连接目的地。
天线1216中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口1212传送和接收无线信号。如图12所示，智能电话1200可以包括多个天线1216。虽然图12示出其中智能电话1200包括多个天线1216的示例，但是智能电话1200也可以包括单个天线1216。
此外，智能电话1200可以包括针对每种无线通信方案的天线1216。在此情况下，天线开关1215可以从智能电话1200的配置中省略。
总线1217将处理器1201、存储器1202、存储装置1203、外部连接接口1204、摄像装置1206、传感器1207、麦克风1208、输入装置1209、显示装置1210、扬声器1211、无线通信接口1212以及辅助控制器1219彼此连接。电池1218经由馈线向图12所示的智能电话1200的各个块提供电力，馈线在图中被部分地示为虚线。辅助控制器1219例如在睡眠模式下操作智能电话1200的最小必需功能。
在图12所示的智能电话1200中，通过使用图2所描述的处理电路210以及其中的测量单元211和生成单元212，以及通过使用图3所描述的处理电路210以及其中的测量单元211、生成单元212、比较单元213和确定单元214，可以由处理器1201或辅助控制器1219实现，并且通过使用图2所描述的通信单元220和通过使用图3所描述的通信单元220可以由无线通信接口1212实现。功能的至少一部分也可以由处理器1201或辅助控制器1219实现。例如，处理器1201或辅助控制器1219可以通过执行存储器1202或存储装置1203中存储的指令而执行测量CSI-RS功能和生成反馈信息功能。
图13是示出可以应用本公开的技术的汽车导航设备1320的示意性配置的示例的框图。汽车导航设备1320包括处理器1321、存储器1322、全球定位系统(GPS)模块1324、传感器1325、数据接口1326、内容播放器1327、存储介质接口1328、输入装置1329、显示装置1330、扬声器1331、无线通信接口1333、一个或多个天线开关1336、一个或多个天线1337以及电池1338。
处理器1321可以为例如CPU或SoC，并且控制汽车导航设备1320的导航功能和另外的功能。存储器1322包括RAM和ROM，并且存储数据和由处理器1321执行的程序。
GPS模块1324使用从GPS卫星接收的GPS信号来测量汽车导航设备1320的位置(诸如纬度、经度和高度)。传感器1325可以包括一组传感器，诸如陀螺仪传感器、地磁传感器和空气压力传感器。数据接口1326经由未示出的终端而连接到例如车载网络1341，并且获取由车辆生成的数据(诸如车速数据)。
内容播放器1327再现存储在存储介质(诸如CD和DVD)中的内容，该存储介质被插入到存储介质接口1328中。输入装置1329包括例如被配置为检测显示装置1330的屏幕上的触摸的触摸传感器、按钮或开关，并且接收从用户输入的操作或信息。显示装置1330包括诸如LCD或OLED显示器的屏幕，并且显示导航功能的图像或再现的内容。扬声器1331输出导航功能的声音或再现的内容。
无线通信接口1333支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口1333通常可以包括例如BB处理器1334和RF电路1335。BB处理器1334可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路1335可以包括例如混频器、滤波器和放大器，并且经由天线1337来传送和接收无线信号。无线通信接口1333还可以为其上集成有BB处理器1334和RF电路1335的一个芯片模块。如图13所示，无线通信接口1333可以包括多个BB处理器1334和多个RF电路1335。虽然图13示出其中无线通信接口1333包括多个BB处理器1334和多个RF电路1335的示例，但是无线通信接口1333也可以包括单个BB处理器1334或单个RF电路1335。
此外，除了蜂窝通信方案之外，无线通信接口1333可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线LAN方案。在此情况下，针对每种无线通信方案，无线通信接口1333可以包括BB处理器1334和RF电路1335。
天线开关1336中的每一个在包括在无线通信接口1333中的多个电路(诸如用于不同的无线通信方案的电路)之间切换天线1337的连接目的地。
天线1337中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口1333传送和接收无线信号。如图13所示，汽车导航设备1320可以包括多个天线1337。虽然图13示出其中汽车导航设备1320包括多个天线1337的示例，但是汽车导航设备1320也可以包括单个天线1337。
此外，汽车导航设备1320可以包括针对每种无线通信方案的天线1337。在此情况下，天线开关1336可以从汽车导航设备1320的配置中省略。
电池1338经由馈线向图13所示的汽车导航设备1320的各个块提供电力，馈线在图中被部分地示为虚线。电池1338累积从车辆提供的电力。
在图13示出的汽车导航设备1320中，通过使用图2所描述的处理电路210以及其中的测量单元211和生成单元212，以及通过使用图3所描述的处理电路210以及其中的测量单元211、生成单元212、比较单元213和确定单元214，可以由处理器1321实现，并且通过使用图2所描述的通信单元220和通过使用图3所描述的通信单元220可以由无线通信接口1333实现。功能的至少一部分也可以由处理器1321实现。例如，处理器1321可以通过执行存储器1322中存储的指令而执行测量CSI-RS功能和生成反馈信息功能。
本公开的技术也可以被实现为包括汽车导航设备1320、车载网络1341以及车辆模块1342中的一个或多个块的车载系统(或车辆)1340。车辆模块1342生成车辆数据(诸如车速、发动机速度和故障信息)，并且将所生成的数据输出至车载网络1341。
在本公开的系统和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上虽然结合附图详细描述了本公开的实施例，但是应当明白，上面所描述的实施方式只是用于说明本公开，而并不构成对本公开的限制。对于本领域的技术人员来说，可以对上述实施方式作出各种修改和变更而没有背离本公开的实质和范围。因此，本公开的范围仅由所附的权利要求及其等效含义来限定。

Claims (19)

  1. 一种无线通信系统中的电子设备，包括：
    一个或多个处理电路，所述处理电路被配置为执行以下操作：
    响应于来自所述无线通信系统中的基站的测量指示，对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及
    基于测量的结果生成反馈信息，以供所述基站从所述一个或多个天线端口中选择用于向所述电子设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
  2. 根据权利要求1所述的电子设备，其中，所述一个或多个天线端口的数目为n个，其中n为自然数，并且
    其中，所述占用信息包括具有n个比特位的比特图，其中每个比特位对应于所述一个或多个天线端口中的一个天线端口。
  3. 根据权利要求1所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    将测量的结果与预定阈值进行比较；以及
    根据比较的结果来确定所述占用信息。
  4. 根据权利要求1所述的电子设备，其中，所述CSI-RS仅通过部分天线端口传输并且被波束赋形。
  5. 根据权利要求1所述的电子设备，其中，所述测量指示包含在无线资源控制RRC信令中。
  6. 根据权利要求3所述的电子设备，其中，所述处理电路对所述CSI-RS进行测量而获得的量包括参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI和信道质量指示CQI中的至少一种。
  7. 根据权利要求6所述的电子设备，其中，当对所述CSI-RS进行测量而获得的量大于所述预定阈值时，所述处理电路确定传输所述CSI-RS的天线端口被占用。
  8. 根据权利要求1至7中任一项所述的电子设备，其中，所述无线通信系统为高级长期演进LTE-A蜂窝通信系统，并且所述电子设备为所 述无线通信系统中的用户设备。
  9. 一种无线通信系统中的电子设备，包括：
    一个或多个处理电路，所述处理电路被配置为执行以下操作：
    生成测量指示，以便于所述无线通信系统中的用户设备基于所述测量指示对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；
    为所述一个或多个天线端口配置CSI-RS资源；以及
    基于来自所述用户设备的反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
  10. 根据权利要求9所述的电子设备，其中，所述一个或多个天线端口的数目为n个，其中n为自然数，并且
    其中，所述占用信息包括具有n个比特位的比特图，其中每个比特位对应于所述一个或多个天线端口中的一个天线端口。
  11. 根据权利要求9所述的电子设备，其中，所述CSI-RS仅通过部分天线端口传输并且被波束赋形。
  12. 根据权利要求9所述的电子设备，其中，所述处理电路将所述测量指示包含在无线资源控制RRC信令中。
  13. 根据权利要求9所述的电子设备，其中，所述处理电路生成所述测量指示，以指示所述用户设备测量邻小区的全部天线端口上的CSI-RS，并且
    其中，所述处理电路为所述用户设备所在的当前小区的全部天线端口配置零功率的CSI-RS资源。
  14. 根据权利要求13所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    为选择的用于向所述用户设备传输CSI-RS的天线端口重新配置非零功率的CSI-RS资源。
  15. 根据权利要求9所述的电子设备，其中，所述测量指示占用1个比特位。
  16. 根据权利要求9至15中任一项所述的电子设备，其中，所述电 子设备为基站，并且还包括收发机，所述收发机被配置为与所述用户设备进行通信。
  17. 一种无线通信系统，所述无线通信系统包括用户设备和基站，其中，所述用户设备包括一个或多个第一处理电路，所述第一处理电路被配置为执行以下操作：
    响应于来自所述基站的测量指示，对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及
    基于测量的结果生成反馈信息，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息，并且
    其中，所述基站包括一个或多个第二处理电路，所述第二处理电路被配置为执行以下操作：
    生成所述测量指示；
    为所述一个或多个天线端口配置CSI-RS资源；以及
    基于所述反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口。
  18. 一种用于在无线通信系统中进行无线通信的方法，包括：
    响应于来自所述无线通信系统中的基站的测量指示，通过所述无线通信系统中的用户设备对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；以及
    基于测量的结果生成反馈信息，以供所述基站从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
  19. 一种用于在无线通信系统中进行无线通信的方法，包括：
    生成测量指示，以便于所述无线通信系统中的用户设备基于所述测量指示对一个或多个天线端口上的信道状态信息参考信号CSI-RS分别进行测量；
    为所述一个或多个天线端口配置CSI-RS资源；以及
    基于来自所述用户设备的反馈信息，从所述一个或多个天线端口中选择用于向所述用户设备传输CSI-RS的天线端口，所述反馈信息包含指示所述一个或多个天线端口中的每一个的占用情况的占用信息。
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