WO2016141585A1 - Procédé, appareil et système de sélection de mode d'antenne - Google Patents

Procédé, appareil et système de sélection de mode d'antenne Download PDF

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Publication number
WO2016141585A1
WO2016141585A1 PCT/CN2015/074094 CN2015074094W WO2016141585A1 WO 2016141585 A1 WO2016141585 A1 WO 2016141585A1 CN 2015074094 W CN2015074094 W CN 2015074094W WO 2016141585 A1 WO2016141585 A1 WO 2016141585A1
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WIPO (PCT)
Prior art keywords
antenna
index information
transmitting
subframe
antenna index
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PCT/CN2015/074094
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English (en)
Chinese (zh)
Inventor
吴涛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/074094 priority Critical patent/WO2016141585A1/fr
Priority to CN201580076772.6A priority patent/CN107408969B/zh
Publication of WO2016141585A1 publication Critical patent/WO2016141585A1/fr

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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

Definitions

  • the present invention relates to the field of communications, and in particular, to an antenna mode selection method, apparatus, and system.
  • Ghiz Evolution Technology (English: Next Generation 60GHz, referred to as NG60) standard.
  • the peak rate in the existing 802.11ad is 7 Gbps (gigabits per second), while the NG60 requires its peak rate to be increased to more than 20 Gbps.
  • the most likely solution is to introduce multi-antenna technology into the current 802.11ad system.
  • the receiving end and the transmitting end have only one transmitting antenna and receiving antenna for transmitting and receiving wireless signals, and the transmitting antenna and the receiving antenna correspond to multiple antenna modes (ie, beam mode, one for each beam mode).
  • Directional beam selecting different beam modes for transmitting and receiving wireless signals, will result in different signal-to-interference ratios of the transmitting and receiving wireless links. Therefore, the receiving end and the transmitting end first need to perform beam pairing before transmitting and receiving wireless signals (ie, The choice of the optimal antenna mode).
  • the transmitting end sends a sector scanning frame including a pilot signal to the receiving end in each beam mode through the above-mentioned transmitting antenna, and the receiving end receives each beam mode corresponding to each After the sector scans the frame, the channel estimation is performed according to the pilot signal in each sector scan frame, and then the identifier corresponding to the beam mode with the best signal quality is determined according to the result of the channel estimation, and then the identifier corresponding to the beam pattern is determined.
  • the receiving end sends a sector scanning frame including a pilot signal to the receiving end in each beam mode through the above-mentioned transmitting antenna, and the receiving end receives each beam mode corresponding to each After the sector scans the frame, the channel estimation is performed according to the pilot signal in each sector scan frame, and then the identifier corresponding to the beam mode with the best signal quality is determined according to the result of the channel estimation, and then the identifier corresponding to the beam pattern is determined.
  • the inventors have found that the number of antennas in the transmitting end and the receiving end is significantly increased after the introduction of the multi-antenna technology in the current 802.11ad, and each of the transmitting end is selected when the appropriate antenna mode is selected for the transmitting end and the receiving end.
  • Transmitting antennas need to be separately
  • the beam mode sends a sector scan frame including a pilot signal to the receiving end.
  • the number of antennas increases, the total number of antenna patterns corresponding to the antenna increases, so that the sector scan frame to be transmitted by the transmitting antenna of the transmitting end increases correspondingly.
  • the time required to transmit a sector scan frame is increased, resulting in a significant increase in the time overhead required for antenna mode selection.
  • Embodiments of the present invention provide an antenna mode selection method, apparatus, and system, which can reduce the time of antenna mode selection, thereby speeding up antenna mode selection and improving efficiency.
  • a transmitting apparatus is provided, the transmitting apparatus being applied to a network system supporting a next-generation 60 GHz 802.11ad, the network system comprising a transmitting apparatus and a receiving apparatus, wherein the transmitting apparatus includes a processor and a plurality of transmitting antennas And at least one receiving antenna, each of the transmitting antennas corresponding to at least one transmitting mode, wherein:
  • the processor is configured to send, by using the transmit antenna, N pilot signals and corresponding N sets of antenna index information to a receiving device in one subframe, where each pilot signal corresponds to one transmission mode;
  • the antenna index information includes a beam identifier and an antenna identifier;
  • the processor is further configured to receive, by using the receiving antenna, antenna mode indication information that is sent by the receiving device, where the antenna mode indication information includes a most selected by the receiving device according to the N pilot signals.
  • Antenna index information corresponding to the optimal transmission mode
  • the processor is further configured to use, as an optimal transmission mode of the receiving device, a transmission mode corresponding to antenna index information included in the antenna mode indication information.
  • each of the transmitting antennas corresponds to one antenna identifier, and each of the transmitting modes corresponds to one beam identifier;
  • the subframe includes a sector scan frame or a beacon frame; a pilot signal domain and a data domain, the pilot signal
  • the number field includes the N pilot signals, and the data field includes the N sets of antenna index information.
  • the processor sends, by using the transmit antenna, N pilot signals to a receiving device in one subframe. And the corresponding N sets of antenna index information are used to: simultaneously transmit, by the transmitting antenna, N pilot signals corresponding to the N types of transmission modes in a pilot signal domain of one subframe; The N sets of antenna index information corresponding to the N types of transmission modes are simultaneously transmitted in the data domain of the subframe.
  • the processor sends, by using the transmit antenna, N pilot signals to a receiving device in one subframe. And the corresponding N sets of antenna index information are specifically used before:
  • the processor when the processor sends the N pilot signals and the corresponding N sets of antenna index information to the receiving device in one subframe by using the transmitting antenna, the processor is specifically configured to:
  • the N pilot signals corresponding to the N transmission modes are simultaneously transmitted in the pilot signal domain of the subframe of the N sets of antenna index information.
  • a receiving apparatus is provided, the receiving apparatus being applied to a network system supporting a next-generation 60 GHz 802.11ad, the network system comprising a transmitting apparatus and a receiving apparatus, wherein the receiving apparatus includes a processor and a plurality of transmitting antennas And at least one receiving antenna, each of the transmitting antennas corresponding to at least one transmitting mode, wherein:
  • the processor is configured to receive, by the receiving antenna, N pilot signals that are sent by the sending device in one subframe and corresponding N sets of antenna index information; wherein each guide The frequency signal corresponds to a transmission mode; the antenna index information includes a beam identifier and an antenna identifier;
  • the processor is further configured to determine antenna index information corresponding to the optimal transmit antenna based on the N pilot signals received by the receiving antenna;
  • the processor is further configured to send antenna mode indication information including antenna index information corresponding to the optimal transmit antenna to the sending apparatus by using the transmit antenna, so that the sending apparatus sends the antenna mode indication information
  • the transmission mode corresponding to the included antenna index information is used as an optimal transmission mode of the receiving device.
  • each of the transmit antennas corresponds to one antenna identifier
  • the subframe includes a sector scan frame or a beacon frame
  • the subframe includes a pilot signal domain and a data domain
  • the pilot signal domain includes the N pilot signals
  • the data domain includes the N sets of antenna index information.
  • the determining, by using the N pilot signals received by the receiving antenna, the antenna index information corresponding to the optimal transmit antenna is specifically used to:
  • an antenna mode selection method is provided, which is applied to a network system supporting a next-generation 60 GHz 802.11ad, where the network system includes a transmitting device and a receiving device, where the transmitting device includes a processor, a plurality of transmitting antennas, and at least a receiving antenna, each transmitting antenna corresponding to at least one transmitting mode, the method comprising:
  • the transmitting device sends N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe; wherein each pilot signal corresponds to one transmission mode; the antenna index information includes a beam identifier and an antenna identifier;
  • the mode indication information includes antenna index information corresponding to an optimal transmission mode selected by the receiving apparatus according to the N pilot signals;
  • the transmission mode corresponding to the antenna index information included in the antenna mode indication information is used as an optimal transmission mode of the receiving apparatus.
  • each of the transmitting antennas corresponds to one antenna identifier, and each of the transmitting modes corresponds to one beam identifier;
  • the subframe includes a sector scan frame or a beacon frame;
  • a pilot signal domain and a data domain are included, the pilot signal domain includes the N pilot signals, and the data domain includes the N sets of antenna index information.
  • the sending device sends the N pilot signals and the corresponding N sets of antennas to the receiving device in one subframe
  • the index information specifically includes:
  • the sending device sends the N pilot signals and the corresponding N sets of antennas to the receiving device in one subframe Before indexing information, it also includes:
  • the sending, by the sending device, the N pilot signals and the corresponding N sets of antenna index information to the receiving device in one subframe specifically include:
  • a fourth aspect provides an antenna mode selection method, which is applied to a network system supporting a next-generation 60 GHz 802.11ad, where the network system includes a transmitting device and a receiving device, where the receiving device includes a processor, a plurality of transmitting antennas, and at least a receiving antenna, each transmitting antenna corresponding to at least one transmitting mode, the method comprising:
  • the receiving device receives N pilot signals sent by the transmitting device in one subframe and corresponding N sets of antenna index information; wherein each pilot signal corresponds to one transmission mode; the antenna index information includes a beam identifier and an antenna identifier;
  • antenna mode indication information including antenna index information corresponding to the optimal transmit antenna, so that the transmitting device uses a transmission mode corresponding to antenna index information included in the antenna mode indication information as the receiving The optimal emission mode of the device.
  • each of the transmit antennas corresponds to one antenna identifier; the subframe includes a sector scan frame or a beacon frame; and the subframe includes a pilot signal domain and a data domain,
  • the pilot signal domain includes the N pilot signals, and the data domain includes the N sets of antenna index information.
  • the determining, by using the N pilot signals, the antenna index information corresponding to the optimal transmission mode includes:
  • an antenna mode selection system comprising: a transmitting device and a receiving device, wherein the transmitting device is any one of the above transmitting devices, and the receiving device is any one of the receiving devices.
  • the antenna mode selection method, device and system provided by the embodiments of the present invention are supported
  • the transmitting device transmits N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe, and then the transmitting device receives the antenna mode indication information sent by the receiving device, and The transmission mode corresponding to the antenna index information included in the antenna mode indication information is used as the optimal transmission mode of the receiving device.
  • sector scan frames need to be sent one by one for all possible situations, and channel estimation and feedback are performed separately.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • FIG. 1 is a schematic structural diagram of an antenna mode selection system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a transmitting apparatus according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a frame of a subframe according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a frame of another seed frame according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a frame of another seed frame according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a receiving apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of an antenna mode selection method according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of another antenna mode selection method according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of still another antenna mode selection method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a frame structure of a sector scan frame according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a frame structure of another sector scan frame according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a frame structure of another sector scan frame according to an embodiment of the present invention.
  • Wireless communication technology can not meet the bandwidth requirements of applications such as multi-channel high-definition video streaming wireless transmission, and the next generation evolution technology of 60GHz (Gigahertz) 802.11ad WLAN is the next generation 60GHz evolution technology (English: Next Generation 60GHz, Referred to as NG60), its maximum data transmission rate can reach 20Gbit/s (gigabits per second), and the effective coverage in the 60GHz frequency band can reach more than 10 meters. Therefore, in an ideal state, the NG60 can provide a sufficiently wide transmission channel for various high-bandwidth service applications such as high-definition video and file synchronization.
  • the process of beam pairing is specifically described by taking the transmitting end as the router and the receiving end as the user terminal as an example. If the transmitting antenna of the router corresponds to three transmission modes, the beams in the three modes have three different The downtilt angle, each downtilt angle corresponds to a beam in one direction, the receiving antenna of the router corresponds to one receiving mode, the transmitting antenna of the user terminal corresponds to one transmitting mode, and the receiving antenna of the user terminal corresponds to one receiving mode, then the router is performing When the beam is paired, three different scanning frames of different downtilt angles are transmitted through the above-mentioned transmitting antenna, and after receiving the sector scanning frames corresponding to the three beam modes, the user terminal scans the pilots in the frame according to each sector.
  • the signal is channel estimated, and the beam mode with the best signal quality is determined according to the result of the channel estimation.
  • the user terminal sends the identifier corresponding to the beam mode with the best signal quality to the router through the transmission mode.
  • a transmitting antenna of a transmitting end corresponds to multiple transmitting modes
  • a receiving antenna corresponds to multiple receiving modes.
  • the transmitting antenna of the receiving end corresponds to multiple transmitting modes.
  • the receiving antenna corresponds to multiple receiving modes.
  • embodiments of the present invention provide an antenna mode selection method, apparatus, and system.
  • an embodiment of the present invention provides an antenna mode selection system 1 which is a network system supporting a next generation 60 GHz 802.11ad, and the system 1 includes a transmitting device 11 and a receiving device 12.
  • the transmitting device 11 includes a plurality of transmitting antennas, at least one receiving antenna, and a processor.
  • the sending device may be a wireless access point (English: Wireless Access Point, AP for short) or a router.
  • the receiving device 12 includes a plurality of transmitting antennas, at least one receiving antenna, and a processor.
  • the receiving device is a terminal device that can perform data interaction through a wireless local area network (WLAN), such as a smart phone or a network television.
  • WLAN wireless local area network
  • Each of the foregoing transmit antennas corresponds to at least one transmit mode
  • each receive antenna corresponds to at least one receive mode.
  • the foregoing sending device and the receiving device are interchangeable, and the AP and the user terminal are taken as an example for description, when the AP is sent to the user terminal.
  • the AP is a transmitting device
  • the user terminal is a receiving device
  • the user terminal transmits data to the AP
  • the user terminal is a transmitting device
  • the AP is a receiving device.
  • the transmitting device has N transmitting antennas, and each transmitting antenna corresponds to one transmitting mode, and the receiving device has one receiving antenna.
  • the receiving antenna corresponds to a receiving mode as an example, and is not limited thereto.
  • the transmitting device 11 is configured to send N pilot signals and corresponding N sets of antenna index information to the receiving device 12 in one subframe.
  • Each of the transmitting antennas of the transmitting device corresponds to at least one transmitting mode, and each of the pilot signals corresponds to one transmitting mode.
  • the antenna index information includes a beam identifier and an antenna identifier, and each of the transmitting antennas corresponds to one antenna identifier, and each of the transmitting antennas corresponds to one antenna identifier.
  • the transmission mode corresponds to a beam identifier, and the foregoing subframe includes a sector scan frame or a beacon frame; the subframe includes a pilot signal domain and a data domain, the pilot signal domain includes N pilot signals, and the data domain includes N antennas. Index information.
  • the transmitting device may cascade the data in the data field or the data domain of the sector scanning frame to form one type of N-type transmission.
  • the sub-frames of the N sets of antenna index information corresponding to the mode are implemented, and N pilot signals corresponding to the N types of transmission modes are simultaneously transmitted in the pilot signal domain of the subframe; or may be implemented in a subframe.
  • the N pilot signals corresponding to the N transmission modes are simultaneously transmitted in the frequency signal domain, and the N sets of antenna index information corresponding to the N transmission modes are simultaneously transmitted in the data domain of the subframe.
  • the receiving device 12 is configured to determine, according to the received N pilot signals, antenna index information corresponding to an optimal transmission mode, and send transmit antenna mode indication information including antenna index information corresponding to the optimal transmission mode to the transmitting device. 11.
  • Each pilot signal corresponds to a transmission mode
  • the antenna index information includes a beam identifier and an antenna identifier.
  • the transmitting device 11 is further configured to: the day included in the received antenna mode indication information
  • the transmission mode corresponding to the line index information serves as an optimal transmission mode of the receiving device.
  • the processor in the transmitting device 11 may select one of all the transmitting antennas. Root transmission; or, each of the transmitting antennas may separately transmit a subframe including respective corresponding transmission modes.
  • the transmitting device in a network system supporting the next generation 60 GHz 802.11ad, sends N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe, and the receiving device receives After transmitting the N pilot signals and the corresponding N sets of antenna index information in one subframe, the transmitting device transmits the antenna mode indication information to the transmitting device based on the N pilot signals, and the transmitting device receives the antenna mode indication information sent by the receiving device.
  • the transmission mode corresponding to the antenna index information included in the antenna mode indication information is used as an optimal transmission mode of the receiving device.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • FIG. 2 is a schematic diagram of a sending apparatus according to an embodiment of the present invention, which can be applied to a network system supporting the next generation 60 GHz 802.11ad as shown in FIG. 1.
  • the transmitting device 11 specifically includes: a plurality of transmitting antennas 111, at least one receiving antenna 112, and a processor 113. Each transmitting antenna corresponds to at least one transmitting mode, where:
  • the processor 113 is configured to send, by using the transmitting antenna 111, N pilot signals and corresponding N antenna index information to the receiving device in one subframe.
  • Each of the pilot signals corresponds to a transmission mode
  • the antenna index information includes an antenna identifier (DMG Antenna ID) and a beam identifier (Sector ID), and each of the transmit antennas corresponds to one antenna identifier, and each of the transmit modes corresponds to one beam.
  • the foregoing subframe includes a sector scan frame or a beacon frame; the subframe includes a pilot signal domain and a data domain, the pilot signal domain includes N pilot signals, and the data domain includes N sets of antenna index information. Show For example, if a transmitting antenna has two transmission modes, the antenna identifiers are respectively a1, and the transmission modes are 1, 2, respectively, the antenna index information of the antenna is a1+1 and a1+2.
  • the foregoing sector scan frame specifically includes: Frame Control, Duration, Receiver Physical Address (RA), Transmitter Physical Address (TA), Data Domain, Sector Scan Feedback, and Frame Check (FCS).
  • the Frame Control contains the version number information of the protocol;
  • the Duration includes the duration of the transmission frame;
  • the RA contains the physical address of the receiving end;
  • the TA contains the physical address of the transmitting end;
  • the data field contains the antenna indication identifier; and the sector scan feedback
  • the information including the sector scan feedback is included;
  • the FCS includes a frame check sequence, and the receiving end determines whether the received frame is correct.
  • the data field includes: a sending indication identifier, a calculation number (CDOWN), antenna index information, and a total number of antenna index information (RXSS Length) for receiving.
  • the sending indication identifier is 0 or 1, and is used to indicate whether the frame is sent by the sending device or the receiving device; CDOWN is used to indicate the number of sector scanning frames that need to be sent; each antenna index information corresponds to one antenna mode; RXSS Length indicates the total number of antenna index information for reception.
  • the foregoing beacon frame includes: Frame Control, Duration, Basic Service Set Identifier (BSSID), Frame Entity (Body), and Frame Check (FCS).
  • the Frame Control includes the version number information of the protocol;
  • the Duration includes the duration of the transmission frame;
  • the BSSID includes the physical address of the transmitting device;
  • the Body is the data field of the beacon frame; and
  • the FCS includes the frame check sequence for receiving The terminal judges whether the received frame is correct.
  • the frame entity of the above-mentioned beacon frame includes the number of antenna index information (Sector Number) and antenna index information.
  • the above Sector Number represents the number of antenna index information in the frame entity.
  • the foregoing subframe further includes a short training field (English: Short Training Field, STF for short) and a pilot signal domain (ie, Channel Estimation (CE) domain), and the STF is used for The synchronization of the receiver, the CE domain is used for channel estimation.
  • STF Short Training Field
  • CE Channel Estimation
  • the processor 113 is further configured to receive, by using the receiving antenna 112, antenna mode indication information that is sent by the receiving device.
  • the antenna mode indication information includes antenna index information corresponding to an optimal transmission mode selected by the receiving apparatus according to the N pilot signals.
  • the processor 113 is further configured to use a transmission mode corresponding to the antenna index information included in the antenna mode indication information as an optimal transmission mode of the receiving device.
  • the transmitting apparatus provided by the embodiment of the present invention is applied to a network system supporting a next-generation 60 GHz 802.11ad, and the transmitting apparatus transmits N pilot signals and corresponding N sets of antenna index information to a receiving apparatus in one subframe, and then transmits
  • the device receives the antenna mode indication information sent by the receiving device, and uses a transmission mode corresponding to the antenna index information included in the antenna mode indication information as an optimal transmission mode of the receiving device.
  • sector scan frames need to be sent one by one for all possible situations, and channel estimation and feedback are performed separately.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • the method may be implemented in two manners.
  • the processor 113 is specifically configured to: when transmitting, by using the transmit antenna 111, N pilot signals and corresponding N sets of antenna index information to a receiving device in one subframe:
  • N pilot signals corresponding to N transmission modes are simultaneously transmitted in the pilot signal domain of one subframe by the transmitting antenna 111; N sets corresponding to N transmission modes are simultaneously transmitted through the transmitting antenna 111 in the data domain of the subframe Antenna index information.
  • the transmitting antenna 111 first transmits the pilot signals (CE 1 , CE 2 , . . . , CE N ) corresponding to the respective transmission modes in the CE domain of one subframe, and then the transmitting antenna 111 is in the sub-carrier.
  • the data field of the frame simultaneously transmits antenna index information (M 1 , M 2 , ... M N ) corresponding to each transmission mode, thereby constituting a subframe of the structure shown in FIG.
  • the processor 113 is further configured to: before transmitting, by using the transmit antenna 111, N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe:
  • the sector scan frame corresponding to each transmit mode includes a data field, where the data field includes antenna index information corresponding to the transmit mode;
  • the processor 113 when the processor 113 sends the N pilot signals and the corresponding N sets of antenna index information to the receiving device in one subframe through the transmitting antenna 111, the processor 113 is specifically configured to: include the N antennas through the transmitting antenna 111. N pilot signals corresponding to N transmission modes are simultaneously transmitted in the pilot signal domain of the subframe of the index information.
  • the processor 113 acquires a sector scan frame corresponding to the transmission mode from each transmission mode, and then the processor 113 scans the data field in each sector (data field 1, data field 2, . . , data field N) is concatenated in the data field of one subframe, the data field of the subframe contains N data fields.
  • the transmitting antenna 111 simultaneously transmits N pilot signals (CE 1 , CE 2 , . . . , CE N ) corresponding to the N types of transmission modes in the CE domain of the subframe, thereby forming a substructure as shown in FIG. 4 . frame.
  • the processor 113 acquires a sector scan frame corresponding to the transmission mode from each of the transmission modes, and then the processor 113 acquires the data field included in each sector scan frame from the acquired sector scan frame.
  • the index information (M 1 , M 2 , ... M N ) refers to other information than the antenna index information in the data domain of the subframe.
  • the transmitting antenna 111 simultaneously transmits N pilot signals (CE 1 , CE 2 , . . . , CE N ) corresponding to the N transmission modes in the CE domain of the subframe, thereby forming a substructure as shown in FIG. 5 . frame.
  • the transmitting apparatus provided by the embodiment of the present invention is applied to a network system supporting a next-generation 60 GHz 802.11ad, and the transmitting apparatus transmits N pilot signals and corresponding N sets of antenna index information to a receiving apparatus in one subframe, and then transmits
  • the device receives the antenna mode indication information sent by the receiving device, and uses a transmission mode corresponding to the antenna index information included in the antenna mode indication information as an optimal transmission mode of the receiving device.
  • sector scan frames need to be sent one by one for all possible situations, and channel estimation and feedback are performed separately.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • the division of the transmitting device in the embodiment of the present invention is an exemplary description. In practice, there may be multiple dividing methods to constitute the transmitting device of the embodiment of the present invention.
  • FIG. 6 is a receiving apparatus according to an embodiment of the present invention, which can be applied to a network system supporting the next generation 60 GHz 802.11ad as shown in FIG. 1.
  • the receiving device 12 specifically includes: at least one receiving antenna 121, a plurality of transmitting antennas 122, and a processor 123, and each transmitting antenna corresponds to at least one transmitting mode, where:
  • the processor 123 is configured to receive, by the receiving antenna 121, N pilot signals sent by the transmitting device in one subframe and corresponding N sets of antenna index information.
  • Each pilot signal corresponds to a transmission mode
  • the antenna index information includes a beam identifier and an antenna identifier
  • each of the receiving antennas corresponds to one antenna identifier
  • the foregoing subframe includes a sector scan frame or a beacon frame;
  • the frame includes a pilot signal domain and a data domain, the pilot signal domain includes N pilot signals, and the data domain includes N sets of antenna index information.
  • the processor 123 is further configured to determine antenna index information corresponding to the optimal transmit antenna based on the N pilot signals received through the receiving antenna 121.
  • the processor 123 determines the antenna index information corresponding to the optimal transmit antenna based on the N pilot signals received by the receiving antenna 121, the processor 123 is specifically configured to:
  • the processor 123 performs channel estimation according to the received pilot signal, and obtains channel state information (CSI) of the channel corresponding to each pilot signal. Then, the receiving device according to the received signal code power in the CSI corresponding to each pilot signal (English: Received Signal Code Power, RSCP for short), interference signal code power (English: Interference on Signal Code Power, ISCP for short) and spread spectrum
  • the processor 123 is further configured to send the antenna mode indication information corresponding to the optimal transmit antenna to the transmitting device by using the transmit antenna 122, so that the transmitting device uses the transmit mode corresponding to the antenna index information included in the antenna mode indication information as the most Excellent emission mode.
  • the receiving apparatus provided by the embodiment of the present invention is applied to a network system supporting a next-generation 60 GHz 802.11ad, where the receiving apparatus receives N pilot signals transmitted by a transmitting apparatus in one subframe and corresponding N sets of antenna index information, and then, The antenna mode indication information is transmitted to the transmitting device based on the received N pilot signals, so that the transmitting device uses the transmission mode corresponding to the antenna index information included in the antenna mode indication information as the optimal transmission mode of the receiving device.
  • the antenna mode selection process sector scan frames need to be sent one by one for all possible situations, and channel estimation and feedback are performed separately.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • the division of the receiving device in the embodiment of the present invention is an exemplary description. In practice, there may be multiple dividing methods to constitute the receiving device of the embodiment of the present invention.
  • An embodiment of the present invention provides an antenna mode selection method, which is applied to a network system supporting a next-generation 60 GHz 802.11ad as shown in FIG. 1. As shown in FIG. 7, the method specifically includes the following steps:
  • the transmitting device sends N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe.
  • Each of the transmitting antennas of the foregoing transmitting apparatus corresponds to at least one transmitting mode, and each pilot signal corresponds to one transmitting mode, and the antenna index information includes a beam identifier and an antenna identifier.
  • Each of the transmission modes corresponds to a beam identifier, and the foregoing subframe includes a sector scan frame or a beacon frame; the subframe includes a pilot signal domain and a data domain, and the pilot signal domain includes N pilot signals, and the data domain includes N.
  • the step 201 may be implemented in the following two manners according to different configurations of the subframes sent by the sending device.
  • the transmitting device simultaneously transmits multiple pilot signals and antenna index information in the pilot signal domain and the data domain in the subframe respectively.
  • the subframe sent by the transmitting device It is formed by cascading data in N data fields or data fields.
  • step 201 specifically includes the following steps:
  • the transmitting device simultaneously transmits N pilot signals corresponding to N transmission modes in a pilot signal domain of one subframe.
  • the transmitting device simultaneously transmits N sets of antenna index information corresponding to N types of transmission modes in the data domain of the foregoing subframe.
  • the transmitting device concurrently transmits N pilot signals simultaneously in the pilot signal domain position of one subframe, and concurrently transmits the antenna index information corresponding to the N pilot signals in the subframe data domain position, in the absence of the pair.
  • N pilot signals and their corresponding antenna index information are simultaneously transmitted in one subframe.
  • step 201 the following steps are further included:
  • the transmitting device acquires a sector scan frame corresponding to each of the N types of transmission modes.
  • the sector scan frame corresponding to each of the foregoing transmission modes includes a data field, and the data field includes antenna index information corresponding to the foregoing transmission mode.
  • the transmitting device cascades the data fields in each sector scan frame to obtain a subframe that includes N sets of antenna index information.
  • the sending device acquires a data field of each sector scan frame from the acquired sector scan frames corresponding to the N types of transmission modes, and concatenates the acquired data fields of each sector scan frame into one sub-domain.
  • the data field of the frame is a data field of each sector scan frame from the acquired sector scan frames corresponding to the N types of transmission modes, and concatenates the acquired data fields of each sector scan frame into one sub-domain.
  • the sending device acquires antenna index information in a data field in each sector scan frame, and concatenates the obtained N sets of antenna index information to obtain a subframe that includes N sets of antenna index information.
  • the sending device obtains the data domain of each sector scan frame from the sector scan frames corresponding to the acquired N types of transmission modes, and further acquires each sector scan.
  • the transmitting device concatenates the acquired antenna index information in a data domain of one subframe, so that the data domain of the subframe is expanded, so that the data domain of the subframe includes a common information and multiple antenna indexes. information.
  • the above public information refers to other information except the antenna index information in the data domain of the subframe.
  • step 201 specifically includes the following steps:
  • the transmitting device simultaneously transmits N pilot signals corresponding to N types of transmission modes in a pilot signal domain of the subframe including the N sets of antenna index information.
  • the transmitting device receives antenna mode indication information sent by the receiving device.
  • the antenna mode indication information includes antenna index information corresponding to an optimal transmission mode selected by the receiving apparatus according to the N pilot signals.
  • the transmitting device After receiving the antenna mode indication information sent by the receiving device, the transmitting device acquires antenna index information corresponding to the optimal transmission mode in the antenna mode indication information, and the sending device searches for the corresponding optimal transmission mode according to the antenna index information.
  • the transmitting apparatus uses, as an optimal transmission mode of the receiving apparatus, a transmission mode corresponding to the antenna index information included in the antenna mode indication information.
  • An antenna mode selection method provided by an embodiment of the present invention is applied to support a next generation In the 60 GHz 802.11ad network system, the transmitting device transmits N pilot signals and corresponding N sets of antenna index information to the receiving device in one subframe, and then the transmitting device receives the antenna mode indication information sent by the receiving device, and indicates the antenna mode.
  • the transmission mode corresponding to the antenna index information included in the information serves as an optimal transmission mode of the receiving device.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • the embodiment of the present invention provides an antenna mode selection method, which can be applied to a network system supporting the next generation 60 GHz 802.11ad as shown in FIG. 1. As shown in FIG. 8, the method specifically includes the following steps:
  • the receiving device receives N pilot signals sent by the transmitting device in one subframe and corresponding N sets of antenna index information.
  • Each pilot signal corresponds to one transmission mode
  • the antenna index information includes a beam identifier and an antenna identifier.
  • the receiving device determines, according to the N pilot signals, antenna index information corresponding to an optimal transmission mode.
  • step 302 specifically includes the following steps:
  • the receiving device performs channel estimation on each of the received N pilot signals, and obtains channel estimation results of the corresponding channels of the N pilot signals.
  • the receiving device performs channel estimation according to the received pilot signal, and obtains channel state information of a channel corresponding to each pilot signal.
  • the receiving device calculates a signal to interference ratio of the corresponding channel of each pilot signal according to a channel estimation result of the corresponding channel of each pilot signal.
  • the receiving device selects antenna index information corresponding to the optimal transmission mode according to a signal to interference ratio of the corresponding channel of each pilot signal.
  • the receiving device selects antenna index information corresponding to the signal-to-interference ratio with the largest value from the signal-to-interference ratio of the channel corresponding to each pilot signal.
  • the receiving device sends the antenna mode indication information that includes the antenna index information corresponding to the optimal transmit antenna to the sending device, so that the sending device uses the transmit mode corresponding to the antenna index information included in the antenna mode indication information as the optimal transmit mode of the receiving device. .
  • step 303 the method further includes the following steps:
  • the receiving device combines the channel estimation results corresponding to the N pilot signals to obtain a channel domain corresponding channel estimation result, thereby further demodulating the data domain.
  • the above channel estimation result may be a channel impulse response.
  • the transmitting device passes the formula The channel impulse responses corresponding to the N pilot signals are combined to obtain a channel impulse response of the data domain.
  • h is the channel impulse response of the data domain
  • N is the number of channel impulse responses between the transmitting device and the receiving device
  • h n is the value of the nth channel impulse response
  • ⁇ represents the impulse response
  • t n is the first The time corresponding to the n impact responses.
  • An antenna mode selection method provided by an embodiment of the present invention is applied to a network system supporting a next-generation 60 GHz 802.11ad, and a receiving apparatus receives N pilot signals transmitted by a transmitting apparatus in one subframe and corresponding N sets of antenna index information, and then And transmitting the antenna mode indication information to the transmitting device based on the received N pilot signals, so that the transmitting device uses the transmission mode corresponding to the antenna index information included in the antenna mode indication information as the optimal transmission mode of the receiving device.
  • sector scan frames need to be sent one by one for all possible situations, and channel estimation and feedback are performed separately.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to send a sector scan frame which shortens the time for antenna mode selection and speeds up antenna mode selection.
  • the speed of choice increases efficiency.
  • the transmitting device includes three transmitting antennas, and each transmitting antenna corresponds to one transmitting mode, and the pilot signals and antenna index information corresponding to the three transmitting modes are CE 1 , CE 2 , CE 3 , and M 1 , respectively. M 2 , M 3 ;
  • the receiving device includes one receiving antenna, and the receiving antenna corresponds to one receiving mode.
  • the subframe in this embodiment is described by taking a sector scan frame as an example.
  • the antenna mode selection method provided by the embodiment of the present invention is specifically as follows:
  • the transmitting device transmits three pilot signals CE 1 , CE 2 , CE 3 and corresponding three sets of antenna index information M 1 , M 2 , M 3 to the receiving device in one sector scan frame.
  • the configuration of the sector scan frame transmitted by the transmitting device is different, and can be implemented in two ways.
  • the three transmitting antennas of the transmitting device simultaneously transmit CE 1 , CE 2 , and CE 3 corresponding to respective transmission modes in a pilot signal domain (ie, a CE domain) of one sector scanning frame, and then, The three transmitting antennas simultaneously transmit the antenna index information M 1 , M 2 and M 3 corresponding to the respective transmission modes in the data field of the sector scanning frame, thereby constituting a sector scanning frame of the structure shown in FIG.
  • the transmitting device separately acquires sector scan frames in the three transmission mode corresponding channels, and obtains three data domains obtained from the above-mentioned sector scan frame: data domain 1, data domain 2, Data field 3 is concatenated in the data field of one sector scan frame. Finally, the transmitting device simultaneously transmits the pilot signals CE 1 , CE 2 and CE 3 corresponding to the three transmission modes in the CE domain of the sector scan frame, thereby constituting a sector scan frame of the structure shown in FIG.
  • the transmitting device respectively acquires sector scanning frames in the corresponding channels of the three transmission modes, and acquires data fields corresponding to each sector scanning frame from the sector scanning frames: data domain 1, data domain 2, and data domain.
  • the transmission device respectively acquire the antenna index information data M 3 domains 1, M 2 and M 3, and the three concatenation antenna index information in the data field of a sector-sweep frames, and finally, the transmission means CE domain of the sector-sweep frames transmitted simultaneously three kinds of transmission mode corresponding to the pilot signal CE 1, CE 2 and CE 3, thereby constituting a frame structure as shown in FIG sector-sweep 12.
  • A2 The receiving device performs channel estimation on each of the received three pilot signals to obtain a channel impulse response of the channel corresponding to the three pilot signals.
  • the receiving device calculates a signal to interference ratio of the corresponding channel of each pilot signal according to a channel impulse response of the corresponding channel of each pilot signal.
  • the receiving device selects antenna index information corresponding to the optimal transmission mode according to the signal to interference ratio of the corresponding channel of each pilot signal.
  • the receiving apparatus transmits a transmission mode corresponding to the optimum antenna index information M 1 to the antenna pattern instruction information transmitting apparatus.
  • the transmitting device receives the antenna mode indication information sent by the receiving device.
  • transmitting means for transmitting via the antenna sector-sweep frame index information M 1 corresponding to the transmission mode.
  • the receiving device combines the three transmission mode corresponding channels into channels corresponding to the optimal transmission mode, thereby further demodulating data in the data domain of the sector scanning frame.
  • An antenna mode selection method provided by an embodiment of the present invention is applied to a network system supporting a next-generation 60 GHz 802.11ad, and a transmitting apparatus transmits three pilot signals CE 1 , CE 2 , and CE 3 to a receiving apparatus in one sector scan frame.
  • the receiving device performs channel estimation on each of the received three pilot signals, and obtains channel impulse response of the channel corresponding to the three pilot signals, and according to each The pilot signal corresponds to the channel impulse response of the channel, and respectively calculates the signal to interference ratio of the channel corresponding to each pilot signal, and the receiving device selects the antenna index information corresponding to the optimal transmission mode according to the signal to interference ratio of the corresponding channel of each pilot signal. And transmitting the antenna mode indication information including the antenna index information M 1 corresponding to the optimal transmission mode to the transmitting device, and the transmitting device uses the transmission mode corresponding to the antenna index information M 1 included in the antenna mode indication information as the optimal transmission of the receiving device. mode.
  • the solution provided by the present invention reduces the number of sector scan frames to be transmitted in the antenna mode selection process by transmitting N pilot signals and corresponding N sets of antenna index information to the transmitting device in one subframe, thereby shortening
  • the time required to transmit the sector scan frame shortens the selection time of the antenna mode, speeds up the selection of the antenna mode, and improves the efficiency.
  • the disclosed apparatus, systems, and methods may be implemented in other ways.
  • the system embodiment described above is merely illustrative.
  • the division of the module is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, indirect coupling or communication connection of the module, and may be in electrical, mechanical or other form.
  • each functional module in each embodiment of the present application can be integrated in one place.
  • each module may exist physically separately, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Radio Transmission System (AREA)

Abstract

Un procédé, un appareil et un système de sélection de mode d'antenne, qui concernent le domaine des communications, sont utilisés pour sélection de mode d'antenne et peuvent réduire le temps de la sélection de mode d'antenne de manière à augmenter la vitesse de la sélection de mode d'antenne et améliorer l'efficacité. Le procédé met en oeuvre: un appareil émetteur qui envoie, à un appareil récepteur dans une sous-trame (201), N signaux de fréquence pilotes et N éléments d'informations d'index d'antenne correspondants; l'appareil émetteur reçoit des informations d'indication de mode d'antenne envoyées par l'appareil récepteur (202) ; et l'appareil émetteur choisit un mode de transmission correspondant aux informations d'index d'antenne contenues dans les informations d'indication de mode d'antenne comme mode de transmission optimal de l'appareil récepteur (203).
PCT/CN2015/074094 2015-03-12 2015-03-12 Procédé, appareil et système de sélection de mode d'antenne WO2016141585A1 (fr)

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PCT/CN2015/074094 WO2016141585A1 (fr) 2015-03-12 2015-03-12 Procédé, appareil et système de sélection de mode d'antenne
CN201580076772.6A CN107408969B (zh) 2015-03-12 2015-03-12 一种天线模式选择方法、装置及系统

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