WO2017012434A1 - 一种波束更新的方法和装置 - Google Patents

一种波束更新的方法和装置 Download PDF

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Publication number
WO2017012434A1
WO2017012434A1 PCT/CN2016/085304 CN2016085304W WO2017012434A1 WO 2017012434 A1 WO2017012434 A1 WO 2017012434A1 CN 2016085304 W CN2016085304 W CN 2016085304W WO 2017012434 A1 WO2017012434 A1 WO 2017012434A1
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WO
WIPO (PCT)
Prior art keywords
transmit beam
candidate
information
transmit
sender device
Prior art date
Application number
PCT/CN2016/085304
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English (en)
French (fr)
Inventor
苗婷
毕峰
刘星
郁光辉
Original Assignee
中兴通讯股份有限公司
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.)
Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017012434A1 publication Critical patent/WO2017012434A1/zh

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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
    • 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

Definitions

  • the present application relates to, but is not limited to, the field of wireless communication technologies, and in particular, to a method and apparatus for beam update.
  • the use of narrow beam technology also increases the difficulty of establishing links between wireless devices, especially when the wireless device is in motion, the use of narrow beam technology is easy. The communication link between wireless devices is lost or deteriorated.
  • beam training is usually started when the link is lost or deteriorated, and the determination is performed.
  • the optimal beam is then re-established in the optimal beam direction to continue communication.
  • This solution usually results in a large transmission delay of the communication link and even loss of data packets.
  • the present invention provides a method and apparatus for beam update, which can maintain a good communication quality of a link from a sender device to a receiver device, and avoid an increase in transmission delay and packet loss caused by deterioration of the communication link.
  • a beam update method is applied to a sender device, the method comprising:
  • Data is transmitted to the recipient device using the selected transmit beam.
  • the method further includes the following features:
  • Selecting a transmit beam for updating the current transmit beam according to the candidate transmit beam information including:
  • the candidate transmit beam information includes identification information of n candidate transmit beams, select m transmit beams for updating the current transmit beam from the n candidate transmit beams;
  • n is less than or equal to n, and m and n are both greater than or equal to 1.
  • the method further includes the following features:
  • Selecting a transmit beam for updating the current transmit beam according to the candidate transmit beam information including:
  • the m transmit for updating the current transmit beam is selected from the n candidate transmit beams in descending order of priority.
  • n is less than or equal to n, and m and n are both greater than or equal to 1.
  • the method further includes the following features:
  • the transmit beam indication information includes: the selected identification information of each transmit beam, or each selected one of the transmit beams. The identification information of the beam and whether or not the indication information of the current transmit beam is used.
  • the method further includes the following features:
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the method further includes the following features:
  • the method further includes the following features:
  • the method further includes:
  • the candidate transmit beam request is transmitted to the receiver device.
  • a beam update method is applied to a receiver device, the method comprising:
  • Sending candidate transmit beam information to the sender device
  • Data is received on a receive beam corresponding to the updated transmit beam.
  • the method further includes the following features:
  • the candidate transmit beam information includes: identifier information of the candidate transmit beam, or identifier information and priority information of the candidate transmit beam.
  • the method further includes the following features:
  • the bundle indication information includes: identifier information of each selected transmit beam, or identification information of each selected transmit beam and indication information of whether to use the current transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the method further includes the following features:
  • Receiving the transmit beam indication information sent by the sending device including:
  • the method further includes the following features:
  • Sending a handover transmit beam request to the sender device including:
  • the method further includes the following features:
  • Sending candidate transmit beam information to the sender device including:
  • the candidate transmit beam information is transmitted to the sender device when the condition for triggering the transmission of the candidate transmit beam information is met.
  • a device for beam update, applied to a sender device comprising:
  • the candidate beam information receiving module is configured to: receive candidate transmit beam information sent by the receiver device;
  • a first beam update module configured to: select, according to the candidate transmit beam information, for updating a transmit beam of the current transmit beam, transmitting transmit beam indication information to the receiver device, where the result of the selection of the candidate transmit beam by the sender device is carried;
  • the data sending module is configured to: transmit data to the receiving device by using the selected transmit beam.
  • the device further includes the following features:
  • the first beam update module is set to:
  • the candidate transmit beam information includes identification information of n candidate transmit beams, select m transmit beams for updating the current transmit beam from the n candidate transmit beams;
  • n is less than or equal to n, and m and n are both greater than or equal to 1.
  • the device further includes the following features:
  • the first beam update module is set to:
  • the m transmit for updating the current transmit beam is selected from the n candidate transmit beams in descending order of priority.
  • n is less than or equal to n, and m and n are both greater than or equal to 1.
  • the device further includes the following features:
  • the transmit beam indication information includes: the selected identification information of each transmit beam, or the selected identification information of each transmit beam, and whether the current use is used. The indication of the transmit beam.
  • the device further includes the following features:
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the device further includes the following features:
  • the first beam update module is set to:
  • the device further includes the following features:
  • the device also includes:
  • the requesting module is configured to: detect that the quality of the communication link currently from the sender device to the receiver device does not satisfy the transmission requirement, and send a candidate transmit beam request to the receiver device.
  • a device for beam update, applied to a receiver device comprising:
  • the candidate beam information sending module is configured to: send candidate transmit beam information to the sender device;
  • the second beam update module is configured to: after receiving the transmit beam indication information sent by the sender device, determine the updated transmit beam according to the transmit beam indication information;
  • the data receiving module is configured to: receive data on the received beam corresponding to the updated transmit beam.
  • the device further includes the following features:
  • the candidate transmit beam information includes: identifier information of the candidate transmit beam, or identifier information and priority information of the candidate transmit beam.
  • the device further includes the following features:
  • the transmit beam indication information includes: the selected identification information of each transmit beam, or the selected identification information of each transmit beam, and whether the current use is used. Indicator information of the transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the device further includes the following features:
  • the second beam update module is set to:
  • the device further includes the following features:
  • the second beam update module is set to:
  • the device further includes the following features:
  • the candidate beam information sending module is set to:
  • the candidate transmit beam information is transmitted to the sender device when the condition for triggering the transmission of the candidate transmit beam information is met.
  • a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the above method.
  • the receiver device sends the candidate transmit beam information to the sender device, and the quality of the communication link from the sender device to the receiver device is not
  • the sender device selects a transmit beam for updating the current transmit beam according to the candidate transmit beam information, and sends transmit beam indication information to the receiver device, where the sender device carries the candidate transmit beam
  • the sender device transmits data to the receiver device using the selected transmit beam
  • the receiver device receives the data on the receive beam corresponding to the updated transmit beam.
  • the embodiments of the present invention can maintain good communication quality of the link from the sender device to the receiver device, and avoid the increase of the transmission delay and the loss of the data packet caused by the deterioration of the communication link.
  • FIG. 1 is a flowchart of a method (beam device) for updating a beam according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method (receiver device) for beam update according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a device (sender device) for updating a beam according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a device (receiver device) for updating a beam according to an embodiment of the present invention.
  • FIG. 5 is an information interaction diagram of a method for beam update according to Embodiment 1 of the present invention.
  • FIG. 6 is an information interaction diagram of a method for beam update according to Embodiment 2 of the present invention.
  • FIG. 7 is an information interaction diagram of a method for beam update according to Embodiment 3 of the present invention.
  • FIG. 8 is an information interaction diagram of a method for beam update according to Embodiment 4 of the present invention.
  • FIG. 9 is an information interaction diagram of a method for beam update according to Embodiment 5 of the present invention.
  • an embodiment of the present invention provides a method for beam update, which is applied to a sender device, and the method includes:
  • the method may also include the following features:
  • the method before receiving the candidate transmit beam information sent by the receiver device, the method further includes:
  • the sending a candidate transmit beam request to the receiver device includes:
  • the sender device determines, according to at least one of the following parameters, whether the quality of the communication link currently from the sender device to the receiver device meets the transmission requirement: signal interference noise ratio, channel quality indication, transmission rate, throughput, network delay, Abnormal call drop rate, number of retransmissions;
  • selecting, according to the candidate transmit beam information, a transmit beam for updating a current transmit beam including:
  • the candidate transmit beam information includes identification information of n candidate transmit beams, select m transmit beams for updating the current transmit beam from the n candidate transmit beams;
  • the m transmit for updating the current transmit beam is selected from the n candidate transmit beams in descending order of priority.
  • n is less than or equal to n, m and n are greater than or equal to 1;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or identifier information of each selected transmit beam. And whether to use the indication information of the current transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication information of whether to use the current transmit beam;
  • sending the transmit beam indication information to the receiver device including:
  • an embodiment of the present invention provides a method for beam update, which is applied to a receiver device, and the method includes:
  • Send candidate transmit beam information to a sender device.
  • the method may also include the following features:
  • the candidate transmit beam information is used to provide a reference for the sender device to update the current transmit beam;
  • the transmit beam indication information is used to carry the selection result of the candidate transmit beam by the sender device;
  • sending candidate transmit beam information to the sender device including:
  • condition for triggering transmission of the candidate transmit beam information is that the receiver device detects that the quality of the communication link currently from the sender device to the receiver device does not satisfy the transmission requirement;
  • the candidate transmit beam information includes: identifier information of a candidate transmit beam, or identifier information and priority information of the candidate transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or identifier information of each selected transmit beam. And whether to use the indication information of the current transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication information of whether to use the current transmit beam;
  • receiving the transmit beam indication information sent by the sending device including:
  • sending a handover transmit beam request to the sender device including:
  • the receiving device determines, according to the following at least one parameter, whether the quality of the communication link currently from the sender device to the receiver device meets the transmission requirement: a signal interference noise ratio, a transmission rate, a throughput, a network delay, and an abnormality.
  • a signal interference noise ratio a signal interference noise ratio
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • RSSI received signal strength indicator
  • RS-CINR bit error rate
  • block error rate bit error rate
  • bit error rate bit error rate
  • frame error rate bit error rate
  • interference power The number of retransmissions.
  • an embodiment of the present invention provides a device for updating a beam, which is applied to a sender device, and includes:
  • the candidate beam information receiving module 31 is configured to: receive candidate transmit beam information sent by the receiver device;
  • the first beam update module 32 is configured to: select, according to the candidate transmit beam information, a transmit beam for updating a current transmit beam, and send transmit beam indication information to the receiver device, where the sender device carries the candidate transmit Beam selection result;
  • the data sending module 33 is configured to: use the selected transmit beam to transmit data to the receiver device;
  • the device may also include the following features:
  • the first beam update module 32 is configured to:
  • the candidate transmit beam information includes identification information of n candidate transmit beams, select m transmit beams for updating the current transmit beam from the n candidate transmit beams;
  • the n candidate transmit beams are selected for updating according to the order of priority from high to low.
  • n is less than or equal to n, and m and n are both greater than or equal to 1.
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or identifier information of each selected transmit beam. And whether to use the indication information of the current transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the first beam update module 32 is configured to:
  • the device further includes:
  • the requesting module is configured to: detect that the quality of the communication link currently from the sender device to the receiver device does not satisfy the transmission requirement, and send a candidate transmit beam request to the receiver device.
  • an embodiment of the present invention provides a device for updating a beam, which is applied to a receiver device, and includes:
  • the candidate beam information sending module 41 is configured to: send candidate transmit beam information to the sender device;
  • the second beam update module 42 is configured to: after receiving the transmit beam indication information sent by the sender device, determine the updated transmit beam according to the transmit beam indication information;
  • the data receiving module 43 is configured to: receive data on the received beam corresponding to the updated transmit beam.
  • the device may also include the following features:
  • the candidate transmit beam information is used to provide a reference for the sender device to update the current transmit beam;
  • the transmit beam indication information is used to carry the selection result of the candidate transmit beam by the sender device;
  • the candidate transmit beam information includes: identifier information of the candidate transmit beam, or identifier information and priority information of the candidate transmit beam.
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or identifier information of each selected transmit beam. And whether to use the indication information of the current transmit beam;
  • the transmit beam indication information includes: identifier information of each selected transmit beam, or The identification information of each selected transmit beam and whether to use the indication information of the current transmit beam, or the number of transmit beams selected in descending order of priority, or the order of priority from highest to lowest The number of transmitted beams and the indication of whether to use the current transmit beam.
  • the second beam update module 42 is configured to:
  • the second beam update module 42 is configured to:
  • the candidate beam information sending module 41 is configured to:
  • the candidate transmit beam information is transmitted to the sender device when the condition for triggering the transmission of the candidate transmit beam information is met.
  • FIG. 5 is a flowchart of a method for beam update according to Embodiment 1 of the present invention.
  • a receiver device is a terminal
  • a sender device is a base station
  • a base station and a terminal are communicating by using a narrow beam technology.
  • the base station feeds back information of a candidate transmit beam, and then when the received signal quality is poor, the terminal sends a handover transmit beam request to the base station, and switches to the corresponding receive beam to receive data, and the base station switches to the selected transmit beam to transmit data to the terminal.
  • the method includes:
  • Step 201 The terminal and the base station are in a normal communication state.
  • the terminal Since the terminal and the base station are in a normal communication state, the terminal has acquired the transmit beam measurement configuration of the base station from the system broadcast message sent by the base station or indirectly from other serving base stations of the terminal, where the transmit beam measurement configuration includes: the transmit beam The index, the training sequence, the period in which the training sequence is transmitted in the corresponding beam direction, the time-frequency resource occupied, the measurement period of the transmit beam, the time offset of the transmit beam measurement, and the reporting manner of the candidate transmit beam.
  • Step 202 The terminal feeds back candidate transmit beam information to the base station.
  • the terminal When the measurement time of the base station transmit beam is reached, the terminal starts measuring the transmit beam (excluding the current transmit beam), and sorts the measurement results, and selects one transmit beam with the best measurement result as the candidate transmit beam, and at the terminal side. Maintain information about the optimal receive beam of the terminal corresponding to the candidate transmit beam.
  • the terminal arrives at the moment of the candidate transmit beam feedback, the index of the candidate transmit beam is fed back to the base station, and the base station feeds back the candidate transmit beam acknowledgement message to the terminal.
  • the step may further include: the base station sends a candidate transmit beam request to the terminal, and the requesting terminal feeds back the candidate transmit beam information.
  • the terminal After receiving the request, the terminal feeds back the index of the candidate transmit beam to the base station according to the scheduling of the base station, and the base station sends the request to the base station.
  • the candidate transmit beam acknowledgement message is fed back.
  • Step 203 The terminal sends a handover transmit beam request to the base station.
  • the terminal When the received signal quality of the terminal is lower than the signal quality threshold, the current communication link is deteriorating, so the terminal sends a handover transmit beam request to the base station to notify the base station to switch to the candidate transmit beam, and the terminal switches to the reception of the candidate transmit beam. Receive data on the beam.
  • Step 204 The base station uses the candidate transmit beam to transmit data to the terminal, and the terminal uses the corresponding receive beam to receive data.
  • the base station After receiving the handover transmit beam request sent by the terminal, the base station switches to the candidate transmit beam to continue transmitting data to the terminal. Since the base station and the terminal always use the best transmit beam and the corresponding receive beam to transmit data, the method can maintain a good communication quality of the base-to-terminal communication link, thereby reducing the transmission delay of the data packet and avoiding Lost packets.
  • the candidate transmit beam acknowledgement message in this embodiment is an optional message.
  • the terminal when the terminal feeds back information of multiple candidate transmit beams to the base station, the terminal needs to receive the transmit beam indication information sent by the base station after transmitting the handover beam request to the base station, that is, the base station receives the handover transmit beam sent by the terminal. After the request, one or more transmit beams are selected, and the transmit beam indication information is sent to the terminal, and then the base station switches to the selected one or more transmit beams to transmit data to the terminal, and the terminal switches to one or more transmissions according to the transmit beam indication information. Receive data on the receive beam corresponding to the beam.
  • FIG. 6 is a flowchart of a method for beam update according to Embodiment 2 of the present invention.
  • a receiver device is a terminal
  • a sender device is a base station
  • a base station and a terminal are communicating by using a narrow beam technology
  • the terminal is The base station feeds back information of multiple candidate transmit beams, and after receiving the feedback, the base station determines which transmit beams are used to transmit data to the terminal, and sends transmit beam indication information to the terminal, notifying the transmit beam used by the terminal base station, so that the terminal uses the corresponding receive beam to receive.
  • Data includes:
  • Step 301 The terminal and the base station are in a normal communication state.
  • the terminal Since the terminal and the base station are in a normal communication state, the terminal has acquired the transmit beam measurement configuration of the base station from the system broadcast message sent by the base station or indirectly from other serving base stations of the terminal, where the transmit beam measurement configuration includes: an index of the transmit beam The training sequence, the period in which the training sequence is transmitted in the corresponding beam direction, the time-frequency resource occupied, the measurement period of the transmit beam, the time offset of the transmit beam measurement, and the reporting manner of the candidate transmit beam.
  • Step 302 The terminal feeds back candidate transmit beam information to the base station.
  • the terminal When the measurement time of the base station transmit beam is reached, the terminal starts measuring the transmit beam (excluding the current transmit beam), and sorts the measurement results, and selects multiple transmit beams with the best measurement result as candidate transmit beams, and according to the measurement As a result, the priority of each candidate transmit beam is determined. The better the measurement result is, the higher the priority is, the candidate transmit beams with the same measurement result are randomly determined, and the priority of each candidate transmit beam is different.
  • the candidate transmit beam has 3
  • the measurement results of the transmit beam 1 are optimal, the measurement results of the transmit beams 2 and 3 are the same and sub-optimal, and the other transmit beam measurements are not the candidate transmit beams, and the three transmit beams are in descending order of priority: Beam 1, transmit beam 2, transmit beam 3; or transmit beam 1, transmit beam 3, transmit beam 2; that is, the priorities of transmit beams 2 and 3 are randomly determined, while maintaining candidate transmit beams at the terminal side Correspondence with candidate receive beams and priority of candidate transmit beams.
  • the index of the candidate transmit beam and its priority are fed back to the base station, and the base station maintains the candidate transmit beam relative to the terminal and its priority.
  • this step is an ongoing process, that is to say, the candidate transmit beam set is continuously updated.
  • Step 303 The base station sends the transmit beam indication information to the terminal.
  • the number of terminals on the beam serving the terminal may be large, resulting in a shortage of time-frequency resources, or in order to avoid interference to neighboring cell terminals, reducing the transmission power of the base station in the beam direction, and the like.
  • the rate at which the base station transmits data to the terminal does not meet the service requirement of the terminal. Therefore, the base station determines to update the transmit beam that transmits data to the terminal, and the base station selects the candidate transmit beam and its priority according to the priority, and selects the priority according to the priority.
  • the transmit beam indication information is used to notify the terminal base station which transmit beams are to be used to transmit data to the terminal, so that the terminal uses the corresponding receive beam to receive data, where the transmit beam indication information is: transmit The number of beams is three, that is, data is transmitted to the terminal using three transmit beams, and whether the indication information of the current transmit beam is used is 0, that is, the current transmit beam is not used.
  • Step 304 The base station transmits data to the terminal by using the selected transmit beam, and the terminal uses the corresponding receive beam to receive data.
  • the base station continues to transmit data to the terminal by using the three transmit beams selected in the above steps, and the terminal according to the terminal
  • the transmit beam indicated by the transmit beam indication information is switched to receive data on its corresponding receive beam.
  • the reason why the base station updates the transmit beam is that the rate at which the base station transmits data to the terminal does not meet the service requirement of the terminal, and may further include that the quality of the communication link that the base station transmits data to the terminal is deteriorated.
  • the terminal feedback includes the degree of deterioration of the CQI reported by the terminal (for example, the difference between the optimal CQI reported last time and the current optimal CQI, and the difference is greater than the predetermined threshold, indicating that the channel quality is deteriorated), or For the data packet sent by the base station, the number of times the terminal feeds back the NAK (the terminal feedback NAK indicates that the terminal does not correctly receive the data sent by the base station, and the side reflects the deterioration of the channel quality).
  • FIG. 7 is a flowchart of a method for beam update according to Embodiment 3 of the present invention.
  • a receiver device is a base station
  • a sender device is a terminal
  • a base station and a terminal are communicating by using a narrow beam technology.
  • the terminal feeds back information of multiple candidate transmit beams, and then when the received signal quality is poor, the base station sends a handover transmit beam request to the terminal, and the terminal determines to use multiple transmit beams to send data to the base station according to the transmission rate requirement, and the base station switches to multiple transmit beams.
  • Receiving data on the corresponding receiving beam the method includes:
  • Step 401 The terminal and the base station are in a normal communication state.
  • Step 402 The base station sends a transmit beam measurement request to the terminal.
  • the terminal since the terminal usually only connects one base station with beam characteristics, it may not be necessary for the terminal to periodically transmit the beam training sequence in each beam direction like the base station, but start transmitting beam training after receiving the transmission beam measurement request of the base station.
  • the sequence is measured by the base station.
  • the possibility that the terminal periodically transmits the beam training sequence is not excluded here, but the base station does not have to send a transmit beam measurement request to the terminal, that is, the transmit beam measurement request is an optional message.
  • Step 403 The base station feeds back candidate transmit beam information to the terminal.
  • the base station measures the transmit beam of the terminal (excluding the current transmit beam), selects multiple transmit beams with the best measurement result as the candidate transmit beam, and the base station maintains the candidate transmit beam and the candidate. The correspondence between the received beams and the priority information of the candidate transmit beams are selected. When the base station arrives at the moment of the candidate transmit beam feedback, the base station feeds back the index of the candidate transmit beam and its priority to the terminal.
  • Step 404 The base station sends a handover transmit beam request to the terminal.
  • the base station When the received signal quality of the base station is lower than the signal quality threshold, the communication link indicating that the current terminal transmits data to the base station is deteriorating, so the base station sends a handover transmit beam request to the terminal to request the terminal to switch the transmit beam.
  • Step 405 The terminal sends a transmit beam indication to the base station.
  • the terminal determines to use multiple transmit beams to transmit data to the base station according to the transmission rate requirement. Therefore, the terminal sends transmit beam indication information to the base station, which is used to indicate which transmit beams are used to transmit data to the base station.
  • the transmit beam indication information is: the identifiers of the transmit beams are 001 and 002, respectively, that is, the data is transmitted to the base station by using two transmit beams.
  • Step 406 The terminal transmits data to the base station by using the selected transmit beam, and the base station uses the corresponding receive beam to receive data.
  • the terminal uses the transmit beam selected in the above step to transmit data to the base station.
  • the base station uses the receive beam corresponding to the two transmit beams indicated in the transmit beam indication to receive data. Since the terminal and the base station always use the best transmit beam and the corresponding receive beam to transmit data, the method can maintain a good communication quality of the communication link between the terminal and the base station, thereby reducing the transmission delay of the data packet and avoiding Lost packets.
  • FIG. 8 is a flowchart of a method for beam update according to Embodiment 4 of the present invention.
  • a receiver device is a terminal
  • a sender device is a base station 1
  • a base station 1 and a terminal are communicating by using a narrow beam technology.
  • the terminal and the base station 2 are also communicating, that is, the terminal has two serving base stations, and the terminal feeds back information of one candidate transmit beam to the base station 1 in the manner of forwarding by the base station 2, after which the base station determines to use two (including the current transmit beam) to transmit.
  • the beam transmits data to the terminal, and the terminal switches to the receiving beam corresponding to the two transmitting beams to receive data, and the method includes:
  • Step 501 The terminal and the base station 1 and the base station 2 are in a normal communication state
  • Step 502 The terminal feeds back the candidate transmit beam information to the base station 1 and forwards the information through the base station 2;
  • the terminal When the measurement time of the transmit beam of the base station 1 is reached, the terminal starts measuring the transmit beam of the base station 1 (excluding the current transmit beam), sorting the measurement results, and selecting one transmit beam with the best measurement result as the candidate transmit beam.
  • the optimal receiving beam information of the terminal corresponding to the candidate transmitting beam is maintained on the terminal side.
  • the terminal measures the quality of the communication link of the current downlink transmit beam. Considering the reciprocity of the uplink and downlink beams, the quality of the uplink communication link is not good. The quality of the uplink transmission link from the terminal to the base station 2 is good. Therefore, the terminal decides to transmit the candidate transmit beam information to the base station 2, and the base station 2 forwards the base station 2 to the base station 1.
  • the base station 1 successfully receives the candidate corresponding to the terminal from the base station 2.
  • the candidate transmit beam acknowledgement message is fed back to the base station 2, and is forwarded by the base station 2 to the terminal.
  • Step 503 The base station 1 sends the transmit beam indication information to the terminal, and is forwarded by the base station 2;
  • the number of terminals on the beam serving the terminal may be large, resulting in a shortage of time-frequency resources, or in order to avoid interference to neighboring cell terminals, reducing the transmission power of the base station 1 in the beam direction, etc., resulting in the base station 1
  • the rate at which the terminal transmits data does not meet the service requirements of the terminal. Therefore, the base station 1 determines to increase the number of beams that transmit data to the terminal, that is, simultaneously transmits data to the terminal using the current transmit beam and the candidate transmit beam, and the base station 1 forwards the data through the base station 2.
  • the mode sends transmit beam indication information to the terminal, which is used to indicate which transmit beams are used to transmit data to the terminal.
  • the transmitting beam indication information is: the number of the transmitting beams is 1, whether the indication of using the current transmitting beam is 1, that is, using the current transmitting beam to transmit data to the terminal, that is, the base station simultaneously uses the candidate transmitting beam and the current transmitting beam to transmit to the terminal. data.
  • Step 504 The base station 1 transmits data to the terminal by using the selected transmit beam and the current transmit beam, and the terminal receives data by using the corresponding receive beam.
  • the base station 1 uses the transmit beam selected by the foregoing step to transmit data to the terminal.
  • the terminal After receiving the transmit beam indication message, the terminal determines the receive beam corresponding to the transmit beam according to the corresponding relationship between the candidate transmit beam and the candidate receive beam, and the receive beam The current receive beam receives data. Since the base station and the terminal always use the best transmit beam and the corresponding receive beam to transmit data, the method can maintain a good communication quality of the base-to-terminal communication link, thereby reducing the transmission delay of the data packet and avoiding Lost packets.
  • the candidate transmit beam acknowledgement message in this embodiment is an optional message.
  • This embodiment is an example in which the terminal feeds back the candidate transmit beam to the serving base station by using the other station.
  • the other stations herein are not limited to the base station, and may be a terminal, an access point, or a relay station.
  • the uplink and downlink beams are assumed to have mutual For the same device, the optimal transmit beam and the optimal receive beam are the same.
  • the terminal transmits data to the base station at the same time, that is, the terminal is updated.
  • the receiving beam is a transmitting beam, and the data is sent to the base station, and the base station uses the updated transmitting beam as a receiving beam to receive data sent by the terminal.
  • FIG. 9 is a flowchart of a method for beam update according to Embodiment 5 of the present invention.
  • a base station and a terminal are communicating by using a narrow beam technology, where the process includes the terminal feeding back a candidate transmit beam to the base station and the base station to the terminal.
  • Two processes of feeding back a candidate transmit beam, the method comprising:
  • Step 601 The terminal feeds back information of the candidate transmit beam to the base station.
  • the terminal measures the transmit beam of the base station (excluding the current transmit beam), and the actual measurement frequency depends on the transmit beam measurement configuration of the base station and the implementation of the terminal.
  • the terminal sorts the measurement results, selects an optimal one of the transmit beams as the candidate transmit beam, and feeds the candidate transmit beam to the base station when the candidate transmit beam feedback arrives.
  • Step 602 The terminal sends a handover transmit beam request to the base station.
  • the terminal When the received signal quality of the terminal is lower than the signal quality threshold, the current communication link is deteriorating, so the terminal sends a handover transmit beam request to the base station to notify the base station to switch to the candidate transmit beam, and the terminal switches to the reception of the candidate transmit beam. Receive data on the beam.
  • Step 603 The base station uses the candidate transmit beam to transmit data to the terminal, and the terminal uses the corresponding receive beam to receive data.
  • the base station After receiving the handover transmit beam request sent by the terminal, the base station uses the candidate transmit beam fed back by the terminal to transmit data to the terminal.
  • Step 604 The base station feeds back information of the candidate transmit beam to the terminal.
  • the base station measures the transmit beam of the terminal (excluding the current transmit beam), and the actual measurement frequency depends on the base station assigning the terminal to transmit the transmit beam training sequence. Time-frequency resources and implementation of base stations.
  • the base station selects an optimal one of the transmit beams as the candidate transmit beam according to the measurement result, and feeds the candidate transmit beam to the terminal when the candidate transmit beam feedback arrives.
  • Step 605 The base station sends a handover transmit beam request to the terminal.
  • the base station When the received signal quality of the base station is lower than the signal quality threshold, the current communication link is deteriorating, so the base station sends a handover transmit beam request to the terminal to notify the terminal to switch to the candidate transmit beam, and the base station switches to the reception corresponding to the candidate transmit beam. Receive data on the beam.
  • Step 606 The terminal uses the candidate transmit beam to transmit data to the base station, and the base station uses the corresponding receive beam to receive data.
  • the terminal After receiving the handover transmit beam request sent by the base station, the terminal transmits the data to the base station by using the candidate transmit beam fed back by the base station.
  • the base station may determine one or more candidate transmit beams, but the base station needs to send the transmit to the terminal.
  • the beam indication information is used to notify the terminal base station which one or which transmit beams are to be used to transmit data to the terminal, so that the terminal uses the corresponding receive beam to receive data;
  • the terminal may Determining one or more candidate transmit beams, but requiring the terminal to send transmit beam indication information to the base station, for notifying the base station terminal which transmit or transmit transmit beams to use to transmit data to the base station, so that the base station uses the corresponding receive beam to receive data;
  • the terminal can immediately switch to the receive beam corresponding to the candidate transmit beam after receiving the feedback, and the base station immediately switches to the candidate transmit beam to send data after receiving the feedback;
  • the feedback is periodically, the moment when the feedback period arrives is the moment when the candidate beam is fed back; the feedback is triggered by the dedicated signaling (for example, when the candidate beam request is received) ), or satisfying the triggering feedback condition (for example, when the signal to interference and noise ratio of the communication link of the current transmitting device transmitting data to the receiving device is lower than a specific threshold), determining the timing of the candidate transmitting beam feedback according to the scheduling of the base station; 6) Embodiment in which a base station feeds back multiple candidate transmit beams to a terminal Similar to the process in which the terminal feeds back multiple candidate transmit beams to the base station, the difference is that the embodiment in which the base station feeds back multiple candidate transmit beams to the terminal may require the base station to send a transmit beam measurement request to the terminal; 7) when the base station and the terminal use the candidate When transmitting beam transmission data, if there is a link loss or deterioration problem, the base station and the terminal need to perform beam training again, or the terminal switches to another cell, or
  • the "switching transmit beam request" includes 1-bit information for indicating that the sender device needs to switch the transmit beam; the "transmit beam indication” includes the selected identification information of each transmit beam (for example, a beam index); or when the candidate transmit beam information is used.
  • the priority information of the candidate transmit beam is included, and each candidate transmit beam has a different priority, including the number of selected transmit beams; or when the candidate transmit beam information includes only one candidate transmit beam identification information, including The number of transmit beams; it may also include a 1-bit indication indicating whether the current transmit beam is included.
  • the "transmit beam indication" is used to notify the receiver device which transmitter or transmitters to use to transmit data to the receiver device; 9) when the information of the candidate transmit beam fed back by the terminal to the base station includes information of multiple transmit beams, After receiving the request for the handover of the transmit beam, the base station needs to send the transmit beam indication information to the terminal to notify the terminal of which transmit beam or beams are selected; when the information of the candidate transmit beam that the base station feeds back to the terminal includes the information of multiple transmit beams. After receiving the request for switching the transmit beam, the terminal also needs to send the transmit beam indication information to the base station to notify the base station which one or which transmit beam is selected.
  • the receiver device sends candidate transmit beam information to the sender device, where the quality of the communication link from the sender device to the receiver device does not meet the transmission requirement
  • the sender The device selects a transmit beam for updating the current transmit beam according to the candidate transmit beam information, and sends transmit beam indication information to the receiver device, where the result of the selection of the candidate transmit beam by the sender device is carried, and the sender device uses The selected transmit beam transmits data to the receiver device, and the receiver device receives data on the receive beam corresponding to the updated transmit beam.
  • the embodiments of the present invention can maintain good communication quality of the link from the sender device to the receiver device, and avoid the increase of the transmission delay and the loss of the data packet caused by the deterioration of the communication link.
  • Embodiments of the present invention also provide a computer readable storage medium storing computer executable instructions that implement the beam update method when executed by a processor.
  • the embodiments of the present invention can maintain good communication quality of the link from the sender device to the receiver device, and avoid the increase of the transmission delay and the loss of the data packet caused by the deterioration of the communication link.

Abstract

本文公布一种波束更新的方法和装置，所述方法应用于发送方设备，包括：接收到接收方设备发送的候选发射波束信息后，根据候选发射波束信息选择用于更新当前发射波束的发射波束；向接收方设备发送发射波束指示信息，其中携带发送方设备对候选发射波束的选择结果；使用选择的发射波束向接收方设备传输数据。所述方法应用于接收方设备，包括：向发送方设备发送候选发射波束信息；接收到发送方设备发送的发射波束指示信息后，根据发射波束指示信息确定更新后的发射波束；在更新后的发射波束对应的接收波束上接收数据。

Description

一种波束更新的方法和装置 技术领域
本申请涉及但不限于无线通信技术领域，尤其是一种波束更新的方法和装置。
背景技术
随着各种高传输速率要求的应用的发展，人们对高速高质量无线通信服务的需求日益强烈。到目前为止，传统的无线通信技术使用的低频段资源在开发利用上已经接近峰值，可以说在低频段中即使调制和分集复用方式再先进，也根本无法使数据传输速率有质的提高，无法满足当前呈爆炸式增长的无线通信需求，支持更高频段的无线通信技术(例如第五代通信技术)在此背景下应运而生。
在3GHz-300GHz的高频频谱资源中，除去由于严重的氧气层或水蒸汽吸收不适合移动宽带通信的频段以及在实际中已经被应用的频段外，还有约100GHz频谱可用于移动宽带通信，大约是现在移动宽带通信可用频谱的200倍。高频段电磁波传输时存在严重路径损耗和穿透损耗，严重影响了高频通信系统的覆盖性能，但由于高频信号的波长较短，所以在单位面积上能容纳更多的天线元素，这就意味着可以采用波束赋型技术，以窄波束来弥补传输损耗，从而保证高频通信的覆盖性能。然而，由于高频链路很容易受障碍物的影响，因此使用窄波束技术的同时也增加了无线设备之间建立链路的难度，尤其是当无线设备处于移动状态时，窄波束技术的使用很容易使得无线设备之间的通信链路丢失或者恶化。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
相关技术中，通常出现链路丢失或者恶化时才开始进行波束训练，确定 最优波束，然后在最优波束方向重新建立链路继续通信，这种方案通常导致通信链路有较大的传输时延，甚至造成数据包的丢失。
本文提供一种波束更新的方法和装置，能够使从发送方设备到接收方设备的链路保持较好的通信质量，避免通信链路恶化而导致的传输时延增加、数据包丢失。
一种波束更新的方法，应用于发送方设备，该方法包括：
接收到接收方设备发送的候选发射波束信息后，根据所述候选发射波束信息选择用于更新当前发射波束的发射波束；
向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果；
使用选择的发射波束向接收方设备传输数据。
可选地，该方法还包括下述特点：
根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，包括：
如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1。
可选地，该方法还包括下述特点：
根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，包括：
如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1。
可选地，该方法还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射 波束的标识信息和是否使用当前发射波束的指示信息。
可选地，该方法还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，该方法还包括下述特点：
向所述接收方设备发送发射波束指示信息，包括：
在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
可选地，该方法还包括下述特点：
在接收到接收方设备发送的候选发射波束信息之前，所述方法还包括：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求。
一种波束更新的方法，应用于接收方设备，该方法包括：
向发送方设备发送候选发射波束信息；
接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
在更新后的发射波束对应的接收波束上接收数据。
可选地，该方法还包括下述特点：
所述候选发射波束信息包括：候选发射波束的标识信息，或者候选发射波束的标识信息和优先级信息。
可选地，该方法还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波 束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，该方法还包括下述特点：
接收所述发送方设备发送的发射波束指示信息，包括：
向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息。
可选地，该方法还包括下述特点：
向所述发送方设备发送切换发射波束请求，包括：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求。
可选地，该方法还包括下述特点：
向发送方设备发送候选发射波束信息，包括：
在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
周期性向发送方设备发送候选发射波束信息；或者
当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息。
一种波束更新的装置，应用于发送方设备，包括：
候选波束信息接收模块，设置为：接收接收方设备发送的候选发射波束信息；
第一波束更新模块，设置为：根据所述候选发射波束信息选择用于更新 当前发射波束的发射波束，向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果；
数据发送模块，设置为：使用选择的发射波束向接收方设备传输数据。
可选地，该装置还包括下述特点：
第一波束更新模块，设置为：
如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1。
可选地，该装置还包括下述特点：
第一波束更新模块，设置为：
如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1。
可选地，该装置还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息。
可选地，该装置还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，该装置还包括下述特点：
第一波束更新模块，设置为：
在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
可选地，该装置还包括下述特点：
所述装置还包括：
请求模块，设置为：检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求。
一种波束更新的装置，应用于接收方设备，包括：
候选波束信息发送模块，设置为：向发送方设备发送候选发射波束信息；
第二波束更新模块，设置为：接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
数据接收模块，设置为：在更新后的发射波束对应的接收波束上接收数据。
可选地，该装置还包括下述特点：
所述候选发射波束信息包括：候选发射波束的标识信息，或者候选发射波束的标识信息和优先级信息。
可选地，该装置还包括下述特点：
如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，该装置还包括下述特点：
第二波束更新模块，设置为：
向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息。
可选地，该装置还包括下述特点：
第二波束更新模块，设置为：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求。
可选地，该装置还包括下述特点：
候选波束信息发送模块，设置为：
在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
周期性向发送方设备发送候选发射波束信息；或者
当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述方法。
与相关技术相比，本发明实施例提供的一种波束更新的方法和装置，接收方设备向发送方设备发送候选发射波束信息，在从发送方设备到接收方设备的通信链路的质量不满足传输要求时，发送方设备根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果，发送方设备使用选择的发射波束向接收方设备传输数据，接收方设备在更新后的发射波束对应的接收波束上接收数据。本发明实施例能够使从发送方设备到接收方设备的链路保持较好的通信质量，避免通信链路恶化而导致的传输时延增加、数据包丢失。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本发明实施例的一种波束更新的方法(发送方设备)的流程图。
图2为本发明实施例的一种波束更新的方法(接收方设备)的流程图。
图3为本发明实施例的一种波束更新的装置(发送方设备)的结构示意图。
图4为本发明实施例的一种波束更新的装置(接收方设备)的结构示意图。
图5为本发明实施例一的一种波束更新的方法的信息交互图。
图6为本发明实施例二的一种波束更新的方法的信息交互图。
图7为本发明实施例三的一种波束更新的方法的信息交互图。
图8为本发明实施例四的一种波束更新的方法的信息交互图。
图9为本发明实施例五的一种波束更新的方法的信息交互图。
本发明的实施方式
下文中将结合附图对本发明的实施方式进行说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
如图1所示，本发明实施例提供了一种波束更新的方法，应用于发送方设备，该方法包括：
S10，接收到接收方设备发送的候选发射波束信息后，根据所述候选发射波束信息选择用于更新当前发射波束的发射波束；
S20，向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果；
S30，使用选择的发射波束向接收方设备传输数据。
所述方法还可以包括下述特点：
可选地，在接收接收方设备发送的候选发射波束信息之前，还包括：
向接收方设备发送候选发射波束请求；
其中，向接收方设备发送候选发射波束请求，包括：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求；
其中，发送方设备根据以下至少一个参数判断当前从发送方设备到接收方设备的通信链路的质量是否满足传输要求：信号干扰噪声比，信道质量指示，传输速率，吞吐量，网络时延，异常掉话率，重传次数；
可选地，根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，包括：
如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1；
可选地，如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息；
可选地，向所述接收方设备发送发射波束指示信息，包括：
在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
如图2所示，本发明实施例提供了一种波束更新的方法，应用于接收方设备，该方法包括：
S100，向发送方设备发送候选发射波束信息；
S200，接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
S300，在更新后的发射波束对应的接收波束上接收数据；
所述方法还可以包括下述特点：
其中，所述候选发射波束信息用于为所述发送方设备更新当前发射波束提供参考；所述发射波束指示信息用于携带所述发送方设备对候选发射波束的选择结果；
可选地，向发送方设备发送候选发射波束信息，包括：
在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息；或者
周期性向发送方设备发送候选发射波束信息；
可选地，所述触发发送候选发射波束信息的条件为接收方设备检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求；
可选地，所述候选发射波束信息包括：候选发射波束的标识信息，或者候选发射波束的标识信息和优先级信息；
可选地，如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息；
可选地，接收所述发送方设备发送的发射波束指示信息，包括：
向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息
可选地，向所述发送方设备发送切换发射波束请求，包括：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求；
可选地，接收方设备根据以下至少一个参数判断当前从发送方设备到接收方设备的通信链路的质量是否满足传输要求：信号干扰噪声比，传输速率，吞吐量，网络时延，异常掉话率，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，参考信号载波干扰噪声比RS-CINR，误比特率，误块率，误码率，误帧率，干扰功率，重传次数。
如图3所示，本发明实施例提供了一种波束更新的装置，应用于发送方设备，包括：
候选波束信息接收模块31，设置为：接收接收方设备发送的候选发射波束信息；
第一波束更新模块32，设置为：根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果；
数据发送模块33，设置为：使用选择的发射波束向接收方设备传输数据；
所述装置还可以包括下述特点：
可选地，第一波束更新模块32，设置为：
如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当 前发射波束的m个发射波束；
其中，m小于或等于n，m和n均大于或等于1。
可选地，如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，第一波束更新模块32，设置为：
在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
可选地，所述装置还包括：
请求模块，设置为：检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求。
如图4所示，本发明实施例提供了一种波束更新的装置，应用于接收方设备，包括：
候选波束信息发送模块41，设置为：向发送方设备发送候选发射波束信息；
第二波束更新模块42，设置为：接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
数据接收模块43，设置为：在更新后的发射波束对应的接收波束上接收数据。
所述装置还可以包括下述特点：
其中，所述候选发射波束信息用于为所述发送方设备更新当前发射波束提供参考；所述发射波束指示信息用于携带所述发送方设备对候选发射波束的选择结果；
可选地，所述候选发射波束信息包括：候选发射波束的标识信息，或者候选发射波束的标识信息和优先级信息。
可选地，如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
可选地，第二波束更新模块42，设置为：
向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息。
可选地，第二波束更新模块42，设置为：
检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求。
可选地，候选波束信息发送模块41，设置为：
在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
周期性向发送方设备发送候选发射波束信息；或者
当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息。
应用示例
实施例一
图5为本发明实施例一提供的一种波束更新的方法的流程图，在本实施例中，接收方设备为终端，发送方设备为基站，基站和终端采用窄波束技术正在通信，终端向基站反馈一个候选发射波束的信息，之后当接收信号质量差时，终端向基站发送切换发射波束请求，并切换到对应的接收波束上接收数据，基站切换到选择的发射波束上向终端传输数据，该方法包括：
步骤201、终端和基站处于正常通信状态；
由于终端和基站处于正常通信状态，因此终端已经从基站发送的系统广播消息中或者间接地从终端的其它服务基站获取了该基站的发射波束测量配置，其中，发射波束测量配置包括：发射波束的索引，训练序列，训练序列在对应波束方向上发送的周期，占用的时频资源，发射波束的测量周期，发射波束测量的时间偏移，候选发射波束的上报方式等。
步骤202、终端向基站反馈候选发射波束信息；
当基站发射波束的测量时刻达到时，终端开始对发射波束(不包括当前发射波束)进行测量，并对测量结果进行排序，选择测量结果最优的一个发射波束作为候选发射波束，同时在终端侧维护候选发射波束对应的终端的最优接收波束的信息。终端在候选发射波束反馈的时刻到达时，将候选发射波束的索引反馈给基站，基站向终端反馈候选发射波束确认消息。
可选的，本步骤之前可能还包括基站向终端发送候选发射波束请求，请求终端反馈候选发射波束信息，终端收到请求之后，按照基站的调度将候选发射波束的索引反馈给基站，基站向终端反馈候选发射波束确认消息。
步骤203、终端向基站发送切换发射波束请求；
当终端的接收信号质量低于信号质量门限时，说明当前通信链路正在恶化，因此终端向基站发送切换发射波束请求，以通知基站切换到候选发射波束，同时终端切换到候选发射波束对应的接收波束上接收数据。
步骤204、基站使用候选发射波束向终端传输数据，终端使用对应的接收波束接收数据；
基站收到终端发送的切换发射波束请求后，基站切换到候选发射波束继续向终端传输数据。由于基站和终端总是使用最好的发射波束和对应的接收波束传输数据，因此该方法能够使基站到终端的通信链路保持较好的通信质量，从而降低数据包的传输时延，并避免丢失数据包。
值得说明的是，本实施例中候选发射波束确认消息是可选消息。本实施例中当终端向基站反馈多个候选发射波束的信息时，则终端向基站发送切换发射波束请求之后需要接收基站发送的发射波束指示信息，也就是说基站收到终端发送的切换发射波束请求后选择一个或者多个发射波束，并向终端发送发射波束指示信息，然后基站切换到选择的一个或者多个发射波束上向终端传输数据，终端根据发射波束指示信息切换到一个或者多个发射波束对应的接收波束上接收数据。
实施例二
图6为本发明实施例二提供的一种波束更新的方法的流程图，在本实施例中，接收方设备为终端，发送方设备为基站，基站和终端采用窄波束技术正在通信，终端向基站反馈多个候选发射波束的信息，基站收到反馈后确定使用哪些发射波束向终端传输数据，并向终端发送发射波束指示信息，通知终端基站使用的发射波束，以便终端使用相应的接收波束接收数据，该方法包括：
步骤301、终端和基站处于正常通信状态；
由于终端和基站处于正常通信状态，因此终端已经从基站发送的系统广播消息中或者间接地从终端的其它服务基站获取了基站的发射波束测量配置，其中，发射波束测量配置包括：发射波束的索引，训练序列，训练序列在对应波束方向上发送的周期，占用的时频资源，发射波束的测量周期，发射波束测量的时间偏移，候选发射波束的上报方式等。
步骤302、终端向基站反馈候选发射波束信息；
当基站发射波束的测量时刻达到时，终端开始对发射波束(不包括当前发射波束)进行测量，并对测量结果进行排序，选择测量结果最优的多个发射波束作为候选发射波束，并根据测量结果确定每个候选发射波束的优先级，测量结果越好优先级越高，测量结果相同的候选发射波束随机确定其优先级，每一个候选发射波束的优先级不同，例如，候选发射波束有3个，发射波束1测量结果最优，发射波束2和3测量结果相同且次优，其他发射波束测量结果较差不是候选发射波束，则三个发射波束按照优先级由高到低依次为：发射波束1，发射波束2，发射波束3；或者依次为发射波束1，发射波束3，发射波束2；也就是说发射波束2和3的优先级是随机确定的，同时在终端侧维护候选发射波束和候选接收波束的对应关系以及候选发射波束的优先级。终端在候选发射波束反馈的时刻到达时，将候选发射波束的索引及其优先级反馈给基站，基站维护相对于该终端的候选发射波束及其优先级。
值得说明的是：该步骤是一个不断执行的过程，也就是说候选发射波束集合是不断更新的。
步骤303、基站向终端发送发射波束指示信息；
在此步骤之前，可能由于服务于该终端的波束上终端数量较多，导致时频资源短缺，或者为了避免对相邻小区终端的干扰，降低了基站在该波束方向上的发射功率等等，导致基站向该终端传输数据的速率不满足终端的业务要求，因此基站确定更新向该终端传输数据的发射波束，基站根据终端反馈的候选发射波束及其优先级，按照优先级由高到低选择发射波束，然后向终端发送发射波束指示信息，发射波束指示信息用于通知终端基站即将使用哪些发射波束向终端传输数据，以便终端使用相应的接收波束接收数据，其中，发射波束指示信息为：发射波束的数量为3，即使用3个发射波束向终端传输数据，是否使用当前发射波束的指示信息为0，即不使用当前发射波束。
步骤304、基站使用选择的发射波束向终端传输数据，终端使用对应的接收波束接收数据；
基站使用上述步骤选择的三个发射波束继续向终端传输数据，终端根据 发射波束指示信息指示的发射波束，切换到其对应的接收波束上接收数据。
值得说明的是，本实施例中基站更新发射波束的原因除了基站向该终端传输数据的速率不满足终端的业务要求之外，可能还包括基站向终端传输数据的通信链路质量变差，需要根据终端反馈获得该信息，终端反馈包括终端上报CQI的恶化程度(例如用上次上报的最优CQI与本次最优CQI做差，差值大于预定门限，则说明信道质量变差)，或者针对基站发送的一个数据包，终端反馈NAK的次数(终端反馈NAK说明终端没有正确接收基站发送的数据，侧面反映了信道质量变差)。
实施例三
图7为本发明实施例三提供的一种波束更新的方法的流程图，在本实施例中，接收方设备为基站，发送方设备为终端，基站和终端采用窄波束技术正在通信，基站向终端反馈多个候选发射波束的信息，之后当接收信号质量差时，基站向终端发送切换发射波束请求，终端根据传输速率要求确定使用多个发射波束向基站发送数据，基站切换到多个发射波束对应的接收波束上接收数据，该方法包括：
步骤401、终端和基站处于正常通信状态；
步骤402、基站向终端发送发射波束测量请求；
由于终端通常仅连接一个具有波束特性的基站，因此终端可能没有必要像基站那样在每个波束方向上周期地发送波束训练序列，而是在收到基站的发射波束测量请求后才开始发送波束训练序列以供基站测量。
当然，这里也不排除终端周期地发送波束训练序列的可能，但这时基站不必向终端发送发射波束测量请求，也就是说发射波束测量请求是一个可选消息。
步骤403、基站向终端反馈候选发射波束信息；
基站对终端的发射波束(不包括当前发射波束)进行测量，选择测量结果最优的多个发射波束作为候选发射波束，同时基站维护候选发射波束和候 选接收波束的对应关系以及候选发射波束的优先级信息。基站在候选发射波束反馈的时刻到达时，将候选发射波束的索引及其优先级反馈给终端。
步骤404、基站向终端发送切换发射波束请求；
当基站的接收信号质量低于信号质量门限时，说明当前终端向基站传输数据的通信链路正在恶化，因此基站向终端发送切换发射波束请求，以请求终端切换发射波束。
步骤405、终端向基站发送发射波束指示；
终端根据传输速率要求，确定使用多个发射波束向基站传输数据，因此终端向基站发送发射波束指示信息，用于指示使用哪些发射波束向基站传输数据。其中，发射波束指示信息为：发射波束的标识分别为001和002，即使用2个发射波束向基站传输数据。
步骤406、终端使用选择的发射波束向基站传输数据，基站使用对应的接收波束接收数据；
终端使用上述步骤选择的发射波束向基站传输数据，基站收到发射波束指示后就使用发射波束指示中指示的两个发射波束对应的接收波束接收数据。由于终端和基站总是使用最好的发射波束和对应的接收波束传输数据，因此该方法能够使终端到基站的通信链路保持较好的通信质量，从而降低数据包的传输时延，并避免丢失数据包。
实施例四
图8为本发明实施例四提供的一种波束更新的方法的流程图，在本实施例中，接收方设备为终端，发送方设备为基站1，基站1和终端采用窄波束技术正在通信，同时终端与基站2也正在通信，也就是说终端有两个服务基站，终端通过基站2转发的方式向基站1反馈一个候选发射波束的信息，之后基站确定使用两个(包括当前发射波束)发射波束向终端传输数据，终端切换到两个发射波束对应的接收波束上接收数据，该方法包括：
步骤501、终端和基站1、基站2都处于正常通信状态；
步骤502、终端向基站1反馈候选发射波束信息，经由基站2转发；
当基站1发射波束的测量时刻达到时，终端开始对基站1的发射波束(不包括当前发射波束)进行测量，将测量结果进行排序，选择测量结果最优的一个发射波束作为候选发射波束，同时在终端侧维护候选发射波束对应的终端的最优接收波束信息。在候选发射波束反馈的时刻到达时，终端测得当前下行发射波束的通信链路质量较差，考虑到上下行波束的互易性，估计上行通信链路的质量也不太好，而此时终端到基站2的上行传输链路质量较好，因此终端决定将上述候选发射波束信息发送给基站2，由基站2转发给基站1，基站1从基站2从成功接收到与该终端对应的候选发射波束信息后，向基站2反馈候选发射波束确认消息，由基站2转发给终端。
步骤503、基站1向终端发送发射波束指示信息，经由基站2转发；
可能由于服务于该终端的波束上终端数量较多，导致时频资源短缺，或者为了避免对相邻小区终端的干扰，降低了基站1在该波束方向上的发射功率等等，导致基站1向该终端传输数据的速率不满足终端的业务要求，因此基站1确定增加向该终端传输数据的波束的数量，即使用当前发射波束和候选发射波束同时向终端传输数据，基站1经由基站2转发的方式向终端发送发射波束指示信息，用于指示使用哪些发射波束向终端传输数据。其中，发射波束指示信息为：发射波束的数量为1，是否使用当前发射波束的指示为1即使用当前发射波束向终端传输数据，也就是说基站同时使用候选发射波束和当前发射波束向终端传输数据。
步骤504、基站1使用选择的发射波束和当前发射波束向终端传输数据，终端使用对应的接收波束接收数据；
基站1使用上述步骤选择的发射波束向终端传输数据，终端收到发射波束指示消息后，根据维护的候选发射波束和候选接收波束的对应关系，确定发射波束对应的接收波束，在该接收波束以及当前的接收波束上接收数据。由于基站和终端总是使用最好的发射波束和对应的接收波束传输数据，因此该方法能够使基站到终端的通信链路保持较好的通信质量，从而降低数据包的传输时延，并避免丢失数据包。
值得说明的是，本实施例中候选发射波束确认消息是可选消息。另外， 本实施例是终端通过其它站点向服务基站反馈候选发射波束的例子，这里的其它站点不限于基站，也可以是终端、接入点或者中继站等，另外，本实施例中假设上下行波束具有互易性，也就是说对于同一个设备而言最优发射波束和最优接收波束是同一个，对于本实施例中终端向基站传输数据的上行链路也同时进行了切换，即终端以更新后的接收波束为发射波束，向基站发送数据，基站以更新后的发射波束为接收波束，接收终端发送的数据。
实施例五
图9为本发明实施例五提供的一种波束更新的方法的流程图，在本实施例中，基站和终端采用窄波束技术正在通信，该流程包含终端向基站反馈候选发射波束和基站向终端反馈候选发射波束两个过程，该方法包括：
步骤601、终端向基站反馈候选发射波束的信息；
在该步骤之前，终端对基站的发射波束(不包括当前发射波束)进行测量，实际的测量频率取决于基站的发射波束测量配置以及终端的实现。终端将测量结果进行排序，选择最优的一个发射波束作为候选发射波束，在候选发射波束反馈的时刻到达时，将候选发射波束反馈给基站。
步骤602、终端向基站发送切换发射波束请求；
当终端的接收信号质量低于信号质量门限时，说明当前通信链路正在恶化，因此终端向基站发送切换发射波束请求，以通知基站切换到候选发射波束，同时终端切换到候选发射波束对应的接收波束上接收数据。
步骤603、基站使用候选发射波束向终端传输数据，终端使用对应的接收波束接收数据；
基站收到终端发送的切换发射波束请求后，使用终端反馈的候选发射波束向终端传输数据。
步骤604、基站向终端反馈候选发射波束的信息；
在该步骤之前，基站对终端的发射波束(不包括当前发射波束)进行测量，实际的测量频率取决于基站为终端分配的用于发送发射波束训练序列的 时频资源以及基站的实现。基站根据测量结果，选择最优的一个发射波束作为候选发射波束，在候选发射波束反馈的时刻到达时，将候选发射波束反馈给终端。
步骤605、基站向终端发送切换发射波束请求；
当基站的接收信号质量低于信号质量门限时，说明当前通信链路正在恶化，因此基站向终端发送切换发射波束请求，以通知终端切换到候选发射波束，同时基站切换到候选发射波束对应的接收波束上接收数据。
步骤606、终端使用候选发射波束向基站传输数据，基站使用对应的接收波束接收数据；
终端收到基站发送的切换发射波束请求后，使用基站反馈的候选发射波束向基站传输数据。
在上述实施例中，有几种情况特别说明一下：1)当终端向基站反馈的是多个候选发射波束的信息时，基站可以确定一个或者多个候选发射波束，但需要基站向终端发送发射波束指示信息，用于通知终端基站即将使用哪个或者哪些发射波束向终端传输数据，以便终端使用相应的接收波束接收数据；2)基站向终端反馈的是多个候选发射波束的信息时，终端可以确定一个或者多个候选发射波束，但需要终端向基站发送发射波束指示信息，用于通知基站终端即将使用哪个或者哪些发射波束向基站传输数据，以便基站使用相应的接收波束接收数据；3)当终端向基站反馈的是一个候选发射波束时，终端反馈后也可以立即切换到该候选发射波束对应的接收波束上接收数据，而且基站收到反馈后立即切换到该候选发射波束上发送数据；4)当基站向终端反馈的是一个候选发射波束时，基站反馈后也可以立即切换到该候选发射波束对应的接收波束上接收数据，而且终端收到反馈后立即切换到该候选发射波束上发送数据；5)上述实施例中“候选发射波束反馈的时刻”取决于反馈候选发射波束信息的方式，例如周期地反馈时，反馈周期到达的时刻就是候选发射波束反馈的时刻；由专用信令触发反馈(例如收到候选发射波束请求时反馈)，或者满足触发反馈条件(例如当前发送方设备向接收方设备传输数据的通信链路的信号干扰噪声比低于特定门限)反馈时，根据基站的调度确定候选发射波束反馈的时刻；6)基站向终端反馈多个候选发射波束的实施例 与终端向基站反馈多个候选发射波束的实施例的过程类似，差别在于基站向终端反馈多个候选发射波束的实施例可能需要基站向终端发送发射波束测量请求；7)当基站和终端使用候选发射波束传输数据时，如果出现链路丢失或者恶化问题，则需要基站和终端重新进行波束训练，或者终端切换到其他小区，或者终端重新选择新的服务小区；8)上述实施例中“切换发射波束请求”与“发射波束指示”包含的内容和作用都不样。其中“切换发射波束请求”包含1比特信息用于指示发送方设备需要切换发射波束；“发射波束指示”包含选出的每一个发射波束的标识信息(例如波束索引)；或者当候选发射波束信息包含候选发射波束的优先级信息，且每一个候选发射波束的优先级不同时，包含选出的发射波束的数量；或者当候选发射波束信息仅包含一个候选发射波束的标识信息时，包含选出的发射波束的数量；此外还可能包含1比特指示信息指示是否包含当前发射波束。“发射波束指示”用于通知接收方设备发送方设备即将使用哪个或哪些发射波束向接收方设备传输数据；9)当终端向基站反馈的候选发射波束的信息包含多个发射波束的信息时，基站收到切换发射波束请求后，还需要向终端发送发射波束指示信息，以通知终端选用的是哪些或哪个发射波束；当基站向终端反馈的候选发射波束的信息包含多个发射波束的信息时，终端收到切换发射波束请求后，还需要向基站发送发射波束指示信息，以通知基站选用的是哪些或哪个发射波束。
上述实施例提供的一种波束更新的方法和装置，接收方设备向发送方设备发送候选发射波束信息，在从发送方设备到接收方设备的通信链路的质量不满足传输要求时，发送方设备根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果，发送方设备使用选出的发射波束向接收方设备传输数据，接收方设备在更新后的发射波束对应的接收波束上接收数据。本发明实施例能够使从发送方设备到接收方设备的链路保持较好的通信质量，避免通信链路恶化而导致的传输时延增加、数据包丢失。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述波束更新的方法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现，相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本发明实施例不限制于任何特定形式的硬件和软件的结合。
需要说明的是，本申请还可有其他多种实施例，在不背离本申请精神及其实质的情况下，熟悉本领域的技术人员可根据本申请作出各种相应的改变和变形，但这些相应的改变和变形都应属于本申请所附的权利要求的保护范围。
工业实用性
本发明实施例能够使从发送方设备到接收方设备的链路保持较好的通信质量，避免通信链路恶化而导致的传输时延增加、数据包丢失。

Claims (22)

  1. 一种波束更新的方法，应用于发送方设备，该方法包括：
    接收到接收方设备发送的候选发射波束信息后，根据所述候选发射波束信息选择用于更新当前发射波束的发射波束；
    向所述接收方设备发送发射波束指示信息，其中携带所述发送方设备对候选发射波束的选择结果；
    使用选择的发射波束向接收方设备传输数据。
  2. 如权利要求1所述的方法，其中：
    根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，包括：
    如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
    其中，m小于或等于n，m和n均大于或等于1。
  3. 如权利要求1所述的方法，其中：
    根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，包括：
    如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
    其中，m小于或等于n，m和n均大于或等于1。
  4. 如权利要求2所述的方法，其中：
    如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息。
  5. 如权利要求3所述的方法，其中：
    如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
  6. 如权利要求1-5中任一项所述的方法，其中：
    向所述接收方设备发送发射波束指示信息，包括：
    在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
  7. 如权利要求1-5中任一项所述的方法，其中，在接收到接收方设备发送的候选发射波束信息之前，所述方法还包括：
    检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求。
  8. 一种波束更新的方法，应用于接收方设备，该方法包括：
    向发送方设备发送候选发射波束信息；
    接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
    在更新后的发射波束对应的接收波束上接收数据。
  9. 如权利要求8所述的方法，其中：
    所述候选发射波束信息包括：候选发射波束的标识信息，或者候选发射波束的标识信息和优先级信息。
  10. 如权利要求9所述的方法，其中：
    如所述候选发射波束信息包含候选发射波束的标识信息，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息；
    如所述候选发射波束信息包含候选发射波束的标识信息和优先级信息，并且不同候选发射波束的优先级不同，则所述发射波束指示信息包括：选出的每一个发射波束的标识信息，或选出的每一个发射波束的标识信息和是否使用当前发射波束的指示信息，或按照优先级从高到低的顺序选出的发射波束的数量信息，或按照优先级从高到低的顺序选出的发射波束的数量信息和是否使用当前发射波束的指示信息。
  11. 如权利要求8或9或10所述的方法，其中：
    接收所述发送方设备发送的发射波束指示信息，包括：
    向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息。
  12. 如权利要求11所述的方法，其中：
    向所述发送方设备发送切换发射波束请求，包括：
    检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求。
  13. 如权利要求8或9或10所述的方法，其中：
    向发送方设备发送候选发射波束信息，包括：
    在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
    周期性向发送方设备发送候选发射波束信息；或者
    当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息。
  14. 一种波束更新的装置，应用于发送方设备，包括：
    候选波束信息接收模块，设置为：接收接收方设备发送的候选发射波束信息；
    第一波束更新模块，设置为：根据所述候选发射波束信息选择用于更新当前发射波束的发射波束，向所述接收方设备发送发射波束指示信息，其中 携带所述发送方设备对候选发射波束的选择结果；
    数据发送模块，设置为：使用选择的发射波束向接收方设备传输数据。
  15. 如权利要求14所述的装置，其中：
    第一波束更新模块，设置为：
    如所述候选发射波束信息包含n个候选发射波束的标识信息，则从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
    其中，m小于或等于n，m和n均大于或等于1。
  16. 如权利要求14所述的装置，其中：
    第一波束更新模块，设置为：
    如所述候选发射波束信息包含n个候选发射波束的标识信息和优先级信息，则按照优先级从高到低的顺序从n个候选发射波束中选择出用于更新当前发射波束的m个发射波束；
    其中，m小于或等于n，m和n均大于或等于1。
  17. 如权利要求14-16中任一项所述的装置，其中：
    第一波束更新模块，设置为：
    在接收到所述接收方设备发送的切换发射波束请求后，向所述接收方设备发送发射波束指示信息。
  18. 如权利要求14-16中任一项所述的装置，还包括：
    请求模块，设置为：检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向接收方设备发送候选发射波束请求。
  19. 一种波束更新的装置，应用于接收方设备，包括：
    候选波束信息发送模块，设置为：向发送方设备发送候选发射波束信息；
    第二波束更新模块，设置为：接收到所述发送方设备发送的发射波束指示信息后，根据所述发射波束指示信息确定更新后的发射波束；
    数据接收模块，设置为：在更新后的发射波束对应的接收波束上接收数据。
  20. 如权利要求19所述的装置，其中：
    第二波束更新模块，设置为：
    向所述发送方设备发送切换发射波束请求后，接收所述发送方设备发送的发射波束指示信息。
  21. 如权利要求20所述的装置，其中：
    第二波束更新模块，设置为：
    检测到当前从发送方设备到接收方设备的通信链路的质量不满足传输要求，向所述发送方设备发送切换发射波束请求。
  22. 如权利要求19所述的装置，其中：
    候选波束信息发送模块，设置为：
    在接收到发送方设备发送的候选发射波束请求后，向发送方设备发送候选发射波束信息；或者
    周期性向发送方设备发送候选发射波束信息；或者
    当满足触发发送候选发射波束信息的条件时，向发送方设备发送候选发射波束信息。
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