WO2018028426A1 - 波束管理方法及装置 - Google Patents

波束管理方法及装置 Download PDF

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Publication number
WO2018028426A1
WO2018028426A1 PCT/CN2017/094323 CN2017094323W WO2018028426A1 WO 2018028426 A1 WO2018028426 A1 WO 2018028426A1 CN 2017094323 W CN2017094323 W CN 2017094323W WO 2018028426 A1 WO2018028426 A1 WO 2018028426A1
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Prior art keywords
trp
target
source
base station
best beam
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PCT/CN2017/094323
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English (en)
French (fr)
Inventor
杨立
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中兴通讯股份有限公司
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Publication of WO2018028426A1 publication Critical patent/WO2018028426A1/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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular, to a beam management method and apparatus.
  • 3GPP 5G Fifth Generation
  • New Radio Access New RAT/Radio, NR for short
  • the use and operation will play an increasingly important role.
  • the wider high-frequency carrier resources can be fully aggregated and utilized to improve the capacity and throughput performance of the NR system.
  • high-frequency small cells usually transmit (TX, Transmitter)/receiver (RX, Receiver) in order to increase uplink and downlink wireless coverage and channel performance.
  • the side needs to perform a beamforming operation, that is, the beam is directed/directionally received by the multi-antenna phase technique, so that the transmission power can be aggregated/dissipated.
  • the low-frequency macro base station serving cell provides basic wireless coverage
  • the BF mode high-frequency small base station provides data offload when the UE (User Equipment, user equipment) is in the same macro base.
  • UE User Equipment
  • high-frequency micro-base station switching or more connected data transmission occurs.
  • Beam Switch Beam Switch
  • the embodiment of the present application provides a beam management method and device, which can reduce the inter-beam moving switching time.
  • a beam management method comprising: establishing and maintaining spatial time-frequency tracking synchronization between a plurality of target beams in a target transmission receiving point (TRP); if beamforming occurs in a source TRP Abnormally, after receiving the command sent by the master anchor base station, the beam from the source TRP is switched to the target beam in the target TRP.
  • TRP target transmission receiving point
  • the target beam is additionally added and activated.
  • the method may further include: acquiring a plurality of target TRPs according to a Radio Resource Management (RRM) measurement evaluation model. a first best beam information with a best measurement result and a second best beam information with a second best measurement result; the first best beam information and the second best are obtained by a radio resource control (RRC) uplink message
  • RRM Radio Resource Management
  • the beam information is sent to the master anchor base station, so that the master anchor base station performs resource pre-configuration and beam association creation on the downlink and uplink beams in the target TRP; wherein the first optimal beam information and The second best beam information includes: a working frequency bandwidth of the serving cell managed by the TRP, a physical logical identifier, a physical logical identifier of the beam, and an azimuth characteristic value.
  • establishing and maintaining spatial time-frequency tracking synchronization between the target beam within the target transmission and reception point TRP may include:
  • an additional radio link (RL) that is deactivated between base stations is established and maintained and shunted when the target TRP is a TRP other than the source TRP.
  • the switching from a beam within the source TRP to a target beam within the target TRP may include:
  • the target TRP is the source TRP and the currently served beam is the first best beam
  • the target TRP is the source TRP and the currently served beam is the first best beam
  • the target TRP is a TRP other than the source TRP
  • switching from the first best beam of the source TRP to the first most in the target TRP On the beam or,
  • the target TRP is a TRP other than the source TRP
  • switching from the first best beam of the source TRP to the second most of the target TRP Good beam on
  • the additionally adding and activating the use target beam may include:
  • the target TRP is the source TRP and the currently served beam is the first best beam
  • the first optimal beam of the source TRP is kept unchanged, and Activating a second best beam within the source TRP;
  • the target TRP is a TRP other than the source TRP
  • the first best beam and the second best beam of the source TRP are kept unchanged, added and activated. a first best beam and a second best beam within the target TRP.
  • the above method may further include: rapidly switching from the first best beam of the source TRP to or additionally adding a first best beam within the target TRP, or from the source When the first best beam of the TRP is switched to or additionally adds a second best beam within the target TRP, an additional RL is activated and shunted between the base stations, wherein the RL is established in advance and is in a deactivated state .
  • the method may further include: maintaining a beam within the source TRP to place the beam at normal status.
  • the abnormality may include: the offloading base station TRP or the hardware failure of the user equipment UE for transmitting and receiving beams, the uplink and downlink beam space of the current service or the time-frequency transmission In the lost state, the RRM signal strength or quality is below a predetermined threshold.
  • a beam management method including: determining whether an abnormality occurs in a beam in a source TRP; if the beam in the source TRP is abnormal, instructing the UE to switch from a beam in the source TRP to On the target beam in the target TRP; if the beam in the source TRP is not abnormal and the target beam in the target TRP meets the specified condition, the UE is additionally added and activated to use the target beam; wherein the target beam is established and maintained
  • the space time frequency tracks the state of the synchronization.
  • a beam management apparatus including: an establishing module configured to establish and maintain spatial time-frequency tracking synchronization between multiple target beams in a target TRP; and a switching module configured as a source If the beam in the TRP is abnormal, the beam in the source TRP is switched to the target beam in the target TRP after receiving the command sent by the master anchor base station.
  • the apparatus may further include: an adding module configured to additionally add and activate the use target beam when the beam in the source TRP does not abnormal and the target beam in the target TRP meets the specified condition.
  • the apparatus may further include: an obtaining module configured to acquire an image according to an RRM measurement evaluation model before the establishing module establishes and maintains a spatial time-frequency tracking synchronization between the target beam and the target TRP.
  • the sending module is configured to use the RRC uplink message, the first optimal beam information and the The second best beam information is sent to the master anchor base station, so that the master anchor base station performs resource pre-configuration and beam association creation on the downlink and uplink beams in the target TRP; wherein the first most Both the good beam information and the second best beam information include: a working frequency bandwidth of the serving cell under the control of the TRP, a physical logical identifier, a physical logical identifier of the beam, and an azimuth characteristic value.
  • the establishing module may include:
  • a first establishing unit configured to establish and maintain spatial time-frequency tracking synchronization between the second best beam in the source TRP when the target TRP is the source TRP and the beam to be switched or added is the first best beam Wherein the second best beam is in a state that is temporarily not activated for use;
  • a second establishing unit configured to: when the target TRP is a TRP other than the source TRP And maintaining a spatial time-frequency tracking synchronization between the first best beam in the target TRP, wherein the first optimal beam is in a state that is temporarily not activated; or
  • a third establishing unit configured to establish and maintain spatial time-frequency tracking synchronization with a second best beam in the target TRP when the target TRP is a TRP other than the source TRP, where the The second best beam is in a state that is temporarily not activated.
  • the establishing module may further include: a fourth establishing unit configured to establish and maintain and offload additional RLs between the base stations when the target TRP is a TRP other than the source TRP .
  • the switching module may include:
  • a first switching unit configured to: when the target TRP is a source TRP and the currently served beam is the first best beam, after receiving the command sent by the master anchor base station, the first part of the source TRP An optimal beam is switched to a second best beam within the source TRP; or
  • a second switching unit configured to switch from the first best beam of the source TRP to the first uplink beam after receiving the command sent by the master anchor point base station when the target TRP is a TRP other than the source TRP The first best beam within the target TRP;
  • a third switching unit configured to switch from the first best beam of the source TRP to the first after receiving the command sent by the master anchor base station after the target TRP is a TRP other than the source TRP The second best beam within the target TRP.
  • the adding module may include:
  • a first adding unit configured to: when the target TRP is a source TRP and the currently served beam is the first best beam, after receiving the command sent by the master anchor base station, maintaining the first most The good beam is unchanged, adding and activating the second best beam in the source TRP; or
  • a second adding unit configured to: when the target TRP is a TRP other than the source TRP, after receiving the command sent by the master anchor base station, maintaining the first optimal beam and the second optimal beam of the source TRP The first best beam and the second best beam within the target TRP are added and activated using the same.
  • the above apparatus may further include: an activation module configured to Determining, by the first best beam of the source TRP, to or additionally adding a first best beam within the target TRP, or switching from the first best beam of the source TRP to or additionally adding the target
  • an additional RL is activated and shunted between the base stations, wherein the RL is established in advance and is in a deactivated state.
  • the apparatus may further include: a maintenance module configured to: after switching from a beam within the source TRP to a target beam within the target TRP, maintain a beam within the source TRP to The beam is placed in a normal state.
  • a maintenance module configured to: after switching from a beam within the source TRP to a target beam within the target TRP, maintain a beam within the source TRP to The beam is placed in a normal state.
  • the abnormality may include: the offloading base station TRP or the hardware failure of the user equipment UE for transmitting and receiving beams, the current serving uplink/downlink beam space or the time-frequency out-of-synchronization sub-state, and the RRM signal strength or quality is low. At a predetermined threshold.
  • a beam management apparatus including: a determining module configured to determine whether an abnormality occurs in a beam in a source TRP; and a first indication module configured to: when a beam in the source TRP is abnormal, Instructing the UE to switch from the beam in the source TRP to the target beam in the target TRP; the second indication module is configured to indicate that the UE does not have an abnormality in the beam in the source TRP and the target beam in the target TRP meets the specified condition
  • the target beam is additionally added and activated; wherein the target beam is in a state in which the space time tracking synchronization is established and maintained.
  • a computer readable medium is also provided.
  • the computer readable medium is arranged to store program code for performing the following steps:
  • the spatial time-frequency tracking synchronization between multiple target beams in the target TRP is established and maintained; if the beam in the source TRP is abnormal, after receiving the command sent by the master anchor base station, the source is received from the source
  • the beam within the TRP is switched to the target beam within the target TRP. That is, the present application establishes and maintains and targets multiple targets in the receiving point TRP before the beamforming abnormality in the source TRP or before the beam in the source TRP is abnormal and the target beam in the target TRP satisfies the specified condition.
  • the spatial time-frequency tracking synchronization between the beams is achieved, thus achieving the technical effect of reducing the switching time between beams.
  • 1 is a schematic diagram of a beamforming operation of a high frequency small base station
  • 2 is a data transmission architecture diagram of a high-low frequency communication base station that performs multiple connections through tight coupling
  • Figure 3 is a schematic diagram of "rough synchronization training" to "fine synchronization training”
  • FIG. 5 is a schematic diagram of handover between a source TRP and a target TRP in a dual connectivity data transmission by a UE;
  • FIG. 6 is a flowchart of a beam management method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of seamless handover between a source Beam and a target Beam in dual connectivity data transmission according to an embodiment of the present application
  • FIG. 8 is a schematic diagram (1) of a beam management method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram (2) of a beam management method according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram (3) of a beam management method according to an embodiment of the present application.
  • FIG. 11 is a structural block diagram of a beam management apparatus according to an embodiment of the present application.
  • FIG. 12 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application.
  • FIG. 13 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application.
  • FIG. 14 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (3);
  • 15 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (4);
  • 16 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (5);
  • FIG. 17 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (six);
  • FIG. 18 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (7);
  • FIG. 19 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (eight);
  • 21 is a block diagram showing the structure of another beam management apparatus according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of operation of a high frequency small base station beamforming (Beamforming, BF for short).
  • Beamforming beamforming, BF for short.
  • the operator can perform capacity enhancement on a part of the hotspot (Hotspot) area through the high frequency (mmWave) small base station small cell.
  • high-frequency small cells usually transmit (TX, Transmitter)/receiver (RX, Receiver) in order to increase uplink and downlink wireless coverage and channel performance.
  • the side needs to perform a beamforming operation, that is, the beam is directed/directionally received by the multi-antenna phase technique, so that the transmission power can be aggregated/dissipated.
  • the Transmit Receive Point (TRP) cluster in Figure 1 transmits signals in the form of multiple beams (Beams) (>1).
  • the mode of deploying the small cell of the beamforming high-frequency communication base station in FIG. 1 can be mapped to the data transmission architecture of the high-low frequency communication base station shown in FIG. 2 to perform tightly coupled multi-connection.
  • the thin arrow line indicates the Uu interface control plane signaling
  • the thick arrow line indicates the user plane data.
  • the low frequency macro base station serving cell provides basic wireless coverage
  • the BF mode high frequency small base station provides data offloading.
  • high frequency micro base station switching or more connected data may occur. transmission.
  • the TRP of the corresponding base station is usually omnidirectional and The sector-type transmission and reception mode, so that the corresponding downlink common channel/signal (that is, at least one of the downlink common channel and the signal) has a relatively wide coverage area, that is, when the UE enters the center of the TRP Within a certain radius, the downlink common channel/signal can be received at any time, place or direction to realize basic downlink frequency synchronization, cell discovery and dwell, system message reading, uplink random access, pilot measurement, etc. operating.
  • UTS/LTE Universal Mobile Telecommunications System/Long Term Evolution
  • the NR high-frequency base station TRP usually adopts a beamforming transmission mode, so corresponding
  • the downlink common channel/signal has a narrow coverage area (the corresponding serving cell is relatively narrow), that is, when the UE enters a specific radius centered on the TRP, it can only pass at a specific time, place or direction. Spatial Search can receive the downlink common channel/signal to achieve the above basic functions.
  • the UE As the UE moves in the horizontal and vertical directions, the UE is easily separated from the coverage of the Beams, which is called spatial time-frequency out-of-synchronization (assuming that the TRP/UE cannot achieve fast mutual Beam tracking), and the spatial time-frequency is out of step is equivalent to the UE.
  • spatial time-frequency out-of-synchronization assuming that the TRP/UE cannot achieve fast mutual Beam tracking
  • the spatial time-frequency is out of step is equivalent to the UE.
  • the UE To the weak coverage area, at least one of uplink and downlink time-frequency synchronization, uplink random access, and high-efficiency data transmission cannot be effectively maintained. Therefore, the UE must re-search and measure the appropriate cell or Beam as soon as possible to restore the spatial time-frequency synchronization state.
  • the TRP transmits any downlink channel/signal (ie, at least one of the downstream channel and the signal) in a periodic ring sweep.
  • the UE successfully tracks and resides in a high-frequency beamforming service cell, if there is a need for data transmission, the UE needs to establish and maintain a radio link (Radio Link, RL for short) to enter the radio resource control connection. (Radio Resource Control_CONNECTED, referred to as RRC_CONNECTED) mode.
  • RRC_CONNECTED Radio Resource Control_CONNECTED
  • the TRP allocates a dedicated time-frequency resource to the UE, and performs uplink and downlink data block transmission based on the scheduling manner.
  • the UE In the downlink direction, the UE needs to maintain the best tracking state of the space/time/time/frequency (ie, at least one of the best tracking states of space, time-frequency and time-frequency) through the downlink common synchronization signal transmitted by the TRP. On the one hand, the UE needs to measure and feed back channel state information (CSI) through the downlink proprietary reference signal transmitted by the TRP.
  • CSI channel state information
  • the TRP In the uplink direction, the TRP needs to maintain the best tracking state of the space/time/time/frequency by the uplink common synchronization signal transmitted by the UE. On the other hand, the TRP needs to measure the CSI through the uplink proprietary reference signal transmitted by the UE.
  • the uplink and downlink proprietary reference signals are used to measure and demodulate proprietary channels.
  • Beam tracking that is, whether the UE can only listen to the downlink proprietary reference signal received by the TRP to maintain the optimal tracking state of the downlink space/time/time frequency in the downlink direction.
  • Beam tracking whether the UE can only listen to the uplink proprietary reference signal received by the TRP to maintain the optimal tracking state of the downlink space/time/time frequency in the downlink direction.
  • Beam tracking that is, whether the UE can only listen to the downlink proprietary reference signal received by the TRP to maintain the optimal tracking state of the downlink space/time/time frequency in the downlink direction.
  • the TRP can only listen to the uplink proprietary reference signal transmitted by the receiving UE to maintain the optimal tracking state of the uplink space/time/time frequency.
  • Radio Link Failure Radio Link Failure, RLF for short
  • the UE automatically enters the space/time/time-frequency out-of-step substate (but still In the RRC_CONNECTED mode, the UE still needs to continue to monitor the downlink proprietary reference signal of the source service TRP in the vicinity of the spatial time-frequency out-of-synchronization step, and the source TRP still needs to continue to monitor the uplink proprietary reference signal near the spatial time-frequency out-of-synchronization point.
  • the UE strives to quickly recover the beam synchronization substate between the source and the serving TRP.
  • the UE needs to exit the RRC_CONNECTED state and re-listen the downlink common channel/signal of the receiving source service TRP and other neighboring TRPs, and the UE can camp on other neighboring TRPs.
  • the proprietary RL is re-established and maintained.
  • the following row direction is taken as an example.
  • the TRP transmits the BF synchronous training signal, it starts to sweep according to a specific discrete angle (such as the horizontal 0, 30, 60, 90, 120....360 degrees), and the UE It is also possible to direct reception at a particular discrete angle.
  • the TRP and the UE can roughly determine the best discrete angle of the other party, and then can further enter the "fine synchronization training" phase, so that the TRP and the UE can more accurately determine the continuous angle of the other party ("fine The horizontal angle adjustment granularity of the "synchronous training" is smaller than the discrete angle of the previous ring scan emission), and the fine synchronization training minimizes the path loss.
  • the TRP and the UE continue to fine-tune the angles of transmission and reception according to the BF synchronization training signal transmitted by the UE.
  • the above process is shown in Figure 3.
  • the "fine synchronization training” is an optional optimization function based on the local implementation of the communication node hardware.
  • the TRP and the UE side can guarantee the best radio resources of the Beam Reference Signal (BRS).
  • BRS Beam Reference Signal
  • Management Radio Resource Management, RRM for short
  • RRM Radio Resource Management
  • the data transmission mode at this time, the signal transmission efficiency of the TX terminal and the signal to noise ratio of the RX terminal are the largest; otherwise, according to the simulation, if the accuracy result of the spatial time-frequency synchronization training is insufficient, the received signal-to-noise ratio will be reduced.
  • the TRP and the UE cannot be in the optimal RRM measurement mode and data transmission mode. Even worse, the spatial time-frequency out-of-synchronization occurs between the TRP and the UE. They can only be in the worst RRM measurement mode and data transmission mode. . Therefore, in order to ensure the RRM measurement quality and accuracy of the UE's downlink reference signal for the beamforming communication base station, the UE must establish and maintain and maintain the "BF coarse (fine) synchronization substate" for the Beams under the target BF communication base station, otherwise the measurement The obtained RRM measurement results are inaccurate and unreliable.
  • the non-BF mode anchor communication base station In the UE mobile process in the multi-connection data transmission mode, the non-BF mode anchor communication base station usually selects and configures the best target BF mode offload base station TRP for the UE based on the UE RRM measurement report result, or performs TRP between the TRPs. Mobile switching, or increase the configuration of more TRP, for more connected data transmission.
  • A is a preliminary measurement sample value measured by the UE according to internal implementation.
  • B is the intermediate measurement sample value obtained by the UE after layer 1 filtering processing by layer 1 filter in a certain sampling period
  • C is the UE through a layer 3 filter in a certain sampling period ( Layer 3 Filtering)
  • C' is the comparative analysis evaluation value (the same measurement evaluation dimension as C)
  • D is the UE in the measurement report message (MR, Measurement Report)
  • the relevant configuration parameters are from Radio Resource Control (abbreviation). Configuration signaling for RRC) air interface messages.
  • event A1 indicates that the UE is available to the current LTE serving cell (which may be one or more).
  • the strength of the frequency signal reference signal receiving power (Reference Signal Receiving Power, referred to as RSRP) or the reference signal receiving quality (Reference Signal Receiving Quality (RSRQ)) measurement dynamic analysis evaluation value result has been processed by layer 3 filtering
  • the source base station (eNB) has better comparison result (Thresh) configured by RRC air interface signaling (there is also a neural buffer offset value Hys) and continues to exceed the trigger time of an event (TTT, Time) To Trigger), such that the UE triggers the local generation of the A1 event, triggering the MR report; otherwise, the A1 event cannot be generated.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the meaning of various other events can refer to the LTE protocol.
  • the above-mentioned old RRM measurement model and definition have the following characteristics: for a certain RRM measurement event, only one pair is associated with at least one of a certain source serving cell and a certain Neighbor Cell, forming a pair. The cell measurement of 1 compares the evaluation pair (Pair).
  • the multiple Beams (>1) working characteristics of the internal control are very different from the multiple LTE serving cells in the traditional LTE base station, as described above.
  • the UE may trigger the corresponding mobile event when the RRM measurement result corresponding to the target service Tam of a target TRP 2 is significantly better than the source service Beam under the jurisdiction of a certain source TRP 1.
  • the measurement report (Measurement Report, MR for short) message is reported to the anchor to control the macro base station.
  • the anchor control macro base station will let the UE establish and maintain the radio link with the target service BEA of the target TRP 2 through the RRC reconfiguration message (because the target service BEA link quality is better), and before deleting the UE, Source RL 1 is responsible for the RL of the source service Beam (because the quality of the source service Beam link is degraded), the process is shown in Figure 5.
  • the UE is originally in the dual-connection data transmission state of the primary base station macro serving cell (MeNB) and the TRP 1 source service Beam. Later, due to the UE mobility, the anchor point is re-allocated to the dual-connection data transmission state of the MeNB and the TRP 2 Beam.
  • MeNB primary base station macro serving cell
  • each of the shunt base stations TRP is usually configured and activated with multiple service Beams (signal coverage in different manners in different physical directions)
  • the UE performs the above-mentioned coarse (fine) spatial time-frequency tracking synchronization on different Beams. Try and accompany the RRM measurement to establish and maintain and maintain the "BF coarse (fine) synchronization substate", so as to obtain more accurate and reliable RRM measurement results, so the UE may frequently be in the same TRP or different TRP A beam switching (Beam Switch) movement switching operation occurs. That is, in the same TRP scenario, the Bear1 is served from a source with a bad signal, allowing the UE to locally decide and automatically switch to another target, BetterBeam2.
  • Beam Switch Beam Switch
  • This process requires the UE to consume a certain synchronous handover transition time to After the target service Beam2 is established and the "BF coarse (fine) synchronization substate" is completed, the suspended data transmission on the RL can be restored.
  • the source of the signal from the source TRP1 is not good.
  • the RRC command is switched to the target Beam2 with better signal in the target TRP2.
  • This process requires not only the UE to consume a certain synchronous handover transition time, but also needs to perform the handover preparation and coordination process between the source service TRP1 and the target service TRP2.
  • the source RL After establishing and maintaining the "BF coarse (fine) synchronization substate" with the target service Beam2 and establishing the UE and the target service TRP2 and maintaining the new RL after completion, the source RL The suspended data transfer can be resumed on the new RL.
  • the above-mentioned traditional inter-beam mobility switching mode indicates that the data transmission of the UE is forced to be suspended for a period of time, and the length of the interruption depends on the establishment and maintenance of the "BF coarse (fine) synchronization sub-state" by the UE and the target service TRP/Beam, and The total time to establish and maintain a new RL with the target TRP. In some cases, this total time will be large, which will affect the UE's data throughput and user experience.
  • FIG. 6 is a flowchart of a beam management method according to an embodiment of the present application. As shown in FIG. 6, the beam management method provided in this embodiment includes the following steps:
  • Step S602 establishing and maintaining spatial time-frequency tracking synchronization between multiple target beams in the target TRP;
  • Step S604 If the beam in the source TRP is abnormal, after receiving the command sent by the master anchor base station, the beam in the source TRP is switched to the target beam in the target TRP.
  • the spatial time-frequency tracking synchronization between multiple target beams in the target TRP is established and maintained before the beam in the source TRP is abnormal, thus solving the problem that the inter-beam moving switching time is large.
  • the problem that the UE data throughput rate is low is low, and the technical effect of reducing the switching time between beams is achieved.
  • the UE and the non-BF mode master anchor base station (which may be a MeNB or an NR base station node) have established a radio bearer (Signaling Radio Bearer, SRB for short) and several User Radio Bearer (DRB(s) for short).
  • SRB Signal Radio Bearer
  • DRB(s) User Radio Bearer
  • the master anchor base station and several TRP nodes in the BF mode (mainly high-frequency deployment, but not excluding the case where the low-frequency base station applies BF operation) are connected to each other through a standardized interface between communication base stations (may be LTE X2) Or NR Xnew interface), therefore, DRB(s) user data can be used for uplink and downlink bypass user data offloading and parallel multi-connection data transmission.
  • the master anchor base station configures the UE-related measurement parameters through RRC signaling, and the UE performs downlink space on all or multiple Beams (>1) under the target BF-spunt base station TRP based on these parameters.
  • Time-frequency tracking synchronization and downlink RRM measurement that is, the UE needs to perform downlink spatial time-frequency synchronization training and downlink time-frequency synchronization attempt for the Beams first, and try to find the common downlink channel/signal of the target TRP (including the downlink space) through the process of downlink beam training.
  • the UE performs the RRM measurement evaluation operation according to the RRM measurement evaluation model or other enhanced RRM evaluation model illustrated in FIG. 4, and samples the RRM measurement result (such as the sampled signal strength or quality of the BRS pilot) corresponding to each target candidate service Beams. Recorded, and then the first best Beam1 and the second best Beam2 in each target candidate service TRP can be analyzed and evaluated.
  • the RRM measurement result such as the sampled signal strength or quality of the BRS pilot
  • the UE reports the first best Beam1 and the second best Beam2 related information in the multiple target candidate service TRPs of the master anchor station by measuring the reported MR or other RRC related messages, including but not limited to the working frequency of the TRP.
  • the master anchor base station Based on the RRM measurement information reported by the UE, the master anchor base station performs the following operations:
  • the UE and the first best Beam1 in the first best target service TRP 1 attempt to establish or maintain spatial time-frequency tracking synchronization, enter or maintain in the "BF coarse (fine) synchronization substate And establishing and activating the new RL1 with the first best target service TRP 1; meanwhile, the UE and the second best Beam2 within the first best target service TRP 1 also attempt to establish or maintain spatial time-frequency tracking synchronization, advance access Or maintaining the "BF coarse (fine) sync substate”; and exemplarily, the first best Beam1 in the UE and the second best target service TRP 2 also attempts to establish or maintain spatial time-frequency tracking synchronization, advance access or Maintained in the "BF coarse (fine) sync substate", and pre-established with the second best target service TRP 2 but deactivates the new RL2 (to be used for data offload transmission after being activated). Further exemplarily, the UE may also attempt to establish or maintain spatial time-frequency tracking synchronization with the
  • the UE records the working status of the plurality of target services Beams by using a local variable table, such as a table. 1 shows:
  • the UE In the normal state, the UE establishes and activates a new RL1 (which can be used for data offload transmission) with the first best target service TRP 1, and the UE is in the BF coarse/thin on the first best Beam1 in the first best target service TRP1.
  • a new RL1 which can be used for data offload transmission
  • the UE Synchronizing the sub-state (ie, at least one of the BF coarse synchronization sub-state and the fine synchronization sub-state), so the UE can perform high-quality data offload transmission on the RL1 (the UE is in the high-low frequency tight-coupling dual-connection operation at this time); when the UE When the BF out-of-synchronization state occurs on the first best Beam1 in the first best target service TRP1 or the RRM signal strength quality is not good, the UE locally switches to the first most already in the BF coarse/fine synchronization substate.
  • the best target service is on the second best Beam2 in TRP 1 (the UE has already done the space time-frequency synchronization operation in advance), so the data offload transmission on RL1 does not need to suspend the interrupt.
  • the master anchor base station passes the RRC.
  • the message reconfiguration command UE switches to the first best Beam1 in the second best target service TRP 2 that is already in the BF coarse/fine synchronization sub-state, and activates the RL2 that has been pre-configured before, so the UE can be in the RL2
  • the high-quality data offload transmission continues, and the data offload transmission does not need to suspend the interrupt (the UE is still in the high and low frequency tight coupling dual connection operation, and the master anchor base station can delete or deactivate the original RL1).
  • the UE When the UE generates a BF out-of-synchronization state on the first best Beam1 in the second best target service TRP 2 or the RRM signal strength quality is not good, the UE locally switches to the BF coarse
  • the second best target of the fine synchronization sub-state serves on the second best Beam2 within the TRP 2 (since the UE has already done the spatial time-frequency synchronization operation in advance), so the data offload transmission on the RL2 does not require a pause interrupt.
  • the UE is in a dual-connection data transmission state, and may have a plurality of target candidate Beams that are pre-configured and spatial time-frequency synchronized.
  • the UE needs to perform BF spatial time-frequency synchronization operation in advance with two target (within the TRP), or three (between TRPs), or four (between TRPs) target candidate services Beams, and try to establish And maintain the BF coarse/fine sync substate.
  • the master anchor base station can configure and activate an RL for the UE to serve the current data offloading operation, and can also pre-configure but deactivate another backup RL.
  • the master anchor base station activates the pre-configured backup RL through the RRC reconfiguration command or the physical layer control command. Therefore, the UE can implement fast moving switching of the beam components inside the TRP, or fast moving switching between the beams between the TRPs, and the pause time and packet loss rate of the user data transmission will be greatly reduced.
  • the target beam is additionally added and activated. Data is transmitted in parallel by additionally adding and activating the use of the target beam.
  • the method in this embodiment may further include the following steps:
  • Step S11 Acquire, according to the RRM measurement evaluation model, the first best beam information with the best measurement result in the plurality of target TRPs and the second best beam information with the second best measurement result;
  • Step S12 The first optimal beam information and the second best beam information are sent to the master anchor base station by using an RRC uplink message, so that the master anchor base station performs downlink and uplink beams in the target TRP.
  • the first optimal beam information and the second optimal beam information both include: a working frequency bandwidth of the serving cell under the control of the TRP, a physical logical identifier, a physical logical identifier of the beam, and Azimuth feature value.
  • establishing and maintaining an empty space between the target beam within the target TRP Inter-time tracking tracking synchronization can include the following steps:
  • step S21 when the target TRP is the source TRP and the beam to be switched or added is the first best beam, the spatial time-frequency tracking synchronization between the second optimal beam and the source TRP is established and maintained.
  • the second best beam is in a state that is temporarily not activated; or,
  • Step S22 When the target TRP is a TRP other than the source TRP, establish and maintain spatial time-frequency tracking synchronization with the first best beam in the target TRP, where the first optimal beam is temporarily not The state that is activated for use; or,
  • Step S23 When the target TRP is a TRP other than the source TRP, establish and maintain spatial time-frequency tracking synchronization with the second best beam in the target TRP, where the second optimal beam is temporarily not The state that is activated for use.
  • the TRP other than the source TRP involved in the foregoing steps S22 and S23 includes one or more target TRPs with better signal quality than the source TRP, and does not do this. Any restrictions.
  • the UE can implement fast moving switching of the beam components inside the TRP, or fast moving switching between the beams between the TRPs, and the pause time and packet loss rate of the user data transmission are greatly reduced.
  • an additional RL that is deactivated between the base stations may be established and maintained and shunted in advance to enable the UE to perform data transmission after the handover.
  • switching from a beam within the source TRP to a target beam within the target TRP may include the following steps:
  • Step S31 when the target TRP is the source TRP and the currently served beam is the first best beam, after receiving the command sent by the master anchor base station, switching from the first best beam of the source TRP to the The second best beam within the source TRP; or,
  • Step S32 after the target TRP is a TRP other than the source TRP, after receiving the command sent by the master anchor base station, switching from the first best beam of the source TRP to the first in the target TRP. On the best beam; or,
  • Step S33 after the target TRP is a TRP other than the source TRP, after receiving the command sent by the master anchor base station, switching from the first best beam of the source TRP to the second of the target TRP On the best beam.
  • the terminal can be switched from the first best beam of the source TRP to the second best beam in the source TRP, or from the first most The best beam is switched to the first best beam in the target TRP, or the first best beam of the source TRP is switched to the second best beam in the target TRP, further realizing the inter-beam fast Move the switch.
  • additionally adding and activating the use target beam may include the following steps:
  • Step S41 After the target TRP is the source TRP and the currently served beam is the first best beam, after receiving the command sent by the master anchor base station, the first best beam of the source TRP is kept unchanged, and the method is added. And activating the second best beam within the source TRP; or,
  • Step S42 after the target TRP is a TRP other than the source TRP, after receiving the command sent by the master anchor base station, the first best beam and the second best beam of the source TRP are kept unchanged, and The first best beam and the second best beam within the target TRP are activated.
  • the method of this embodiment may further include: rapidly switching from the first best beam of the source TRP to or additionally adding a first best beam within the target TRP, or from the source When the first best beam of the TRP is switched to or additionally adds a second best beam within the target TRP, an additional RL is activated and shunted between the base stations, wherein the RL is established in advance and is in a deactivated state.
  • the method in this embodiment may further include: maintaining a beam in the source TRP to make the beam in a normal state. status.
  • the abnormality may include: the offloading base station TRP or the hardware of the UE for transmitting and receiving beams is faulty, and the current serving uplink/downlink beam space or time-frequency occurs out of synchronization. State, RRM signal strength or quality is below a predetermined threshold.
  • FIG. 8 is a schematic diagram showing an example of a beam management method according to an embodiment of the present application. As shown in FIG. 8, in this example, the UE is in a dual connectivity data transmission state, and there may be several target candidate Beams that are pre-configured in advance and spatial time-frequency synchronization is completed.
  • An operator deploys and utilizes high and low frequency tight coupling to perform dual connectivity (DC) operation.
  • the service macro cell coverage of the Pcell Primary Cell
  • the remote end is connected to the SeNB (secondary base station) high-frequency shunt base station TRP node through the X2 interface, and the high-frequency authorized carrier where the SeNB node is located has two TRPs: TRP1 and TRP2, and each has two service Beams deployed. Used for capacity enhancement in hotspot areas.
  • the UE is only under the coverage of the Pcell, and thus only forms a single connection operation with the MeNB.
  • the MeNB decides to configure the RRM measurement parameters of the relevant high-frequency target serving TRP1/2 node for the UE, and let the UE downlink to the target TRP1/2-Beams.
  • RRM measurement by default, the UE needs to perform downlink space time-frequency tracking synchronization attempt on the target TRP1/2-Beams.
  • the non-BF low frequency MeNB node, the BF high frequency SeNB-TRP 1/2 node, and the UE all support the content capabilities of the present application.
  • This example includes the following implementation steps:
  • Step 101 The master anchor point base station (MeNB) configures, by the RRC message RRC Connection Reconfiguration message, the parameter that the UE performs RRM measurement on the target candidate service TRP1/2 node separately, so that the UE targets the target TRP1/2- Beams perform downstream RRM related measurements.
  • MeNB master anchor point base station
  • Step 102 The UE performs training tracking, spatial/time-frequency synchronization, and RRM measurement of the target Beams based on the RRM measurement parameters configured by the MeNB, and performs the Beam training tracking by using the downlink common synchronization signals transmitted by the respective two Beams under the jurisdiction of the TRP 1/2. After a period of synchronization training, the UE first obtains the downlink "BF fine synchronization substate" of the first best TRP1-Beam1, and after a period of synchronization training, the UE obtains the first best TRP1-Beam2.
  • the downlink "BF fine synchronization substate” after a period of synchronization training, the UE regains and the second The downlink "BF coarse synchronization substate" of the best TRP2-Beam1, the UE does not implement the downlink "BF coarse/fine synchronization substate" with TRP2-Beam2 due to UE capability limitation or RRM measurement configuration parameter constraint.
  • Step 103 The UE obtains the downlink RRM preliminary measurement sample value obtained by tracking the services TRP1-Beam1, TRP1-Beam2, and TRP2-Beam1 on the synchronization according to the RRM evaluation model of FIG. 4, and obtains the intermediate layer 1 after filtering processing.
  • the sampled value is measured, and the dynamic analysis evaluation value is obtained after the layer 3 filtering process, and the UE then reports the RRM measurement result of each target candidate Beams to the MeNB through the RRC message Measurement Report, and the content may include: the UE and each target candidate Beams real-time. "BF coarse/fine sync substate", associated RRM motion event evaluation results and measurement results.
  • Step 104 The MeNB learns that the UE has implemented the downlink “BF fine synchronization sub-state” with the first best TRP1-Beam1 based on the result reported by the UE, and the other conditions of the TRP1 node meet the preset condition requirement, and are determined to be the served UE and
  • the SeNB-TRP1 establishes a high-low frequency dual-connection operation, so that RL1 is established on the TRP1-Beam1 according to the LTE-like dual-connection operation establishment process, and the uplink and downlink data is divided and transmitted.
  • the MeNB continues to command the UE and TRP1-Beam2 to maintain the downlink "BF fine synchronization substate" that is already in the downlink.
  • the MeNB may also prepare to establish RL2 in advance on TRP2-Beam1, but is in a deactivated state, and cannot perform uplink and downlink data offload transmission; the MeNB continues to command the UE and TRP2-Beam1 to maintain the downlink BF coarse/fine synchronization substate that is already in the downlink state. ".
  • Step S105 The SeNB receives the high and low frequency dual connectivity operation addition request message (SeNB Addition Request) sent by the MeNB through the X2 interface, and establishes related configuration information for each of the activated target RL1 and the deactivated target RL2, and the SeNB can determine the TRP1.
  • the uplink "BF fine synchronization substate" has also been implemented with the served UE in Beam1/2 and the associated uplink RRM measurement results are good.
  • the SeNB can also determine that the TRP2 has also implemented the uplink "BF fine synchronizer" with the served UE in Beam1.
  • SeNB feeds back to the MeNB response message SeNB Addition Request Ack through the X2 interface, agrees to perform high and low frequency dual connection setup operation, and agrees to establish and activate RL1 on TRP1-Beam1, at TRP2 -Beam1 is prepared in advance but deactivates RL2.
  • Step 106 The MeNB performs high and low frequency tight coupling DC operation on the UE through the RRC message RRC Connection Reconfiguration configuration, after which the UE can simultaneously from the MeNB-RL and The SeNB-TRP1-RL1 performs uplink and downlink user service transmission data on two radio links.
  • the SeNB-TRP1-RL1 can perform a back-and-forth mobile switching without interruption of data transmission pause between TRP1-Beam1 and TRP1-Beam2, and the UE can also perform a no-data transmission pause interrupt between TRP1 and TRP2.
  • RL1 can be deactivated at the same time, and vice versa.
  • the MeNB may repeat the flow actions of steps 101 to 106 as the UE moves to a wide range or changes in the wireless environment.
  • FIG. 9 is another schematic diagram of a beam management method according to an embodiment of the present application.
  • the UE is in a dual connectivity data transmission state, and there may be several target candidate Beams that are pre-configured in advance and spatial time-frequency synchronization is completed.
  • An operator deploys and utilizes high and low frequency tight coupling for DC operation.
  • the TRP node of the NR BS and the high-frequency shunt base station NR BS node have two TRPs on the high-frequency authorized carrier: TRP1 and TRP2, each of which has two service Beams deployed for capacity enhancement of the hotspot area.
  • the UE is only under the coverage of the Pcell and therefore only forms a single connection operation with the low frequency master anchor base station (NR BS).
  • NR BS low frequency master anchor base station
  • the UE gradually approaches the common coverage area of the Pcell+TRP1-Beams, so that the low-frequency master anchor base station NR BS decides to configure the RRM measurement parameters of the relevant high-frequency target service TRP1/2 node for the UE, so that the UE targets the target.
  • the TRP1/2-Beams performs downlink RRM measurement.
  • the UE needs to perform downlink spatial time-frequency tracking synchronization attempt on the target TRP1/2-Beams.
  • the low frequency master anchor base station NR BS node, the high frequency offload base station NR BS-TRP 1/2 node and the UE all support the content capabilities of the present application.
  • This example includes the following implementation steps:
  • Step 201 The low-frequency master anchor base station NR BS configures, by the RRC message RRC Connection Reconfiguration, the parameters of the RRM measurement performed by the UE on the target candidate service TRP1/2 node, and allows the UE to perform downlink RRM-related measurement on the target TRP1/2-Beams.
  • Step 202 The UE performs search tracking, spatial time-frequency synchronization, and RRM measurement of the target Beams based on the RRM measurement parameters configured by the low-frequency master anchor base station NR BS, and is controlled by the TRP 1/2.
  • the downlink common synchronization signal transmitted by each of the two Beams is subjected to Beam training tracking. After a period of synchronization training, the UE first obtains the downlink "BF coarse synchronization substate" of the first best TRP1-Beam2, and then after a period of time.
  • the UE After the synchronization training, the UE obtains the downlink "BF coarse synchronization substate" of the first best TRP1-Beam1, and after a period of synchronization training, the UE obtains the downlink "BF” of the second best TRP2-Beam2.
  • the fine synchronization substate the UE does not implement the downlink "BF coarse/fine synchronization substate” with TRP2-Beam1 due to UE capability limitation or RRM measurement configuration parameter constraint.
  • Step 203 The UE performs tracking of the sampled value of the downlink RRM obtained by the services TRP1-Beam1, TRP1-Beam2, and TRP2-Beam2 according to a new RRM evaluation model specified in the NR system, and is filtered by layer 1 After the processing, the intermediate measurement sample value is obtained, and after the layer 3 filtering process, the dynamic analysis evaluation value is obtained, and the UE then reports the RRM measurement result of each target candidate Beams to the low-frequency master anchor point base station NR BS through the RRC message Measurement Report.
  • the content may include: "BF coarse/fine synchronization sub-state" of the UE and each target candidate Beams in real time, related RRM movement event evaluation results and measurement results.
  • Step 204 The low-frequency master anchor base station NR BS learns that the UE has implemented the downlink “BF coarse synchronization sub-state” with the first best TRP1-Beam2 based on the result reported by the UE, and other conditions of the TRP1 node meet the preset condition requirement. It is decided to establish a high-low frequency DC operation for the served UE and the high-frequency shunt base station NRBS-TRP1, thereby establishing a RL1 on the TRP1-Beam2 according to the dual-connection operation establishment procedure of the NR system specification, and performing uplink-downlink data offload transmission.
  • the low frequency master anchor base station NR BS continues to command the UE and TRP1-Beam1 to remain in the downlink "BF coarse sync substate" that is already in progress.
  • the low frequency master anchor point base station (NR BS) can also pre-establish the RL2 with the TRP2-Beam2, but is in the deactivated state, and cannot perform uplink and downlink data offload transmission; the low frequency master control anchor point base station (NR BS) continues to command the UE.
  • the TRP2-Beam2 is maintained at the downstream "BF coarse/fine sync substate" that is already in place.
  • Step 205 The high frequency shunt base station NR BS receives the high and low frequency DC operation addition request message (NR BS Addition Request) sent by the low frequency master anchor point base station NR BS through the Xnew interface, and the activated target RL 1 / deactivated target RL2 each establishes relevant configuration information, and the high-frequency shunt base station NR BS can determine that the TRP1 has also implemented the uplink "BF coarse synchronization sub-state" with the served UE in Beam1/2 and the associated uplink RRM measurement result is good, and the high-frequency shunt base station is good.
  • NR BS Addition Request the high and low frequency DC operation addition request message sent by the low frequency master anchor point base station NR BS through the Xnew interface
  • the activated target RL 1 / deactivated target RL2 each establishes relevant configuration information
  • the high-frequency shunt base station NR BS can determine that the TRP1 has also implemented the uplink "BF coarse synchronization sub-state"
  • NR BS It can also be judged that the TRP2 has also implemented the uplink "BF fine synchronization sub-state" with the served UE in Beam2 and the associated uplink RRM measurement result is good, so the high-frequency shunt base station NR BS feeds back to the low-frequency master anchor point base station through the Xnew interface.
  • the NR BS message NR BS Addition Request Ack agrees to perform the high and low frequency DC setup operation, and agrees to establish and activate RL1 on TRP1-Beam2, and pre-establishes but deactivates RL2 on TRP2-Beam2.
  • Step 206 The low frequency master anchor base station NR BS configures the UE to perform high and low frequency tight coupled DC operation through the RRC message RRC Connection Reconfiguration, after which the UE can simultaneously from the low frequency master anchor point base station NR BS-RL and the high frequency offload base station NR BS -TRP1-RL1 performs uplink and downlink user service transmission data on two radio links.
  • TRP1-RL1 can perform a back-and-forth mobile switching without interruption of data transmission pause between TRP1-Beam2 and TRP1-Beam1, and the UE can also perform a back-and-forth mobile switching without interruption of data transmission pause between TRP1 and TRP2.
  • RL1 After RL2 is activated by the physical layer signaling delivered by the master anchor base station NR BS, RL1 can be deactivated at the same time, and vice versa.
  • the low frequency master anchor base station NR BS may repeat the flow of steps 201 to 206 as the UE moves to a wide range or changes in the wireless environment.
  • FIG. 10 is another schematic diagram of a beam management method according to an embodiment of the present application.
  • the UE is in a three-connection data transmission state, and there may be several target candidate Beams that are pre-configured in advance and spatial time-frequency synchronization is completed.
  • An operator deploys and utilizes high-and low-frequency tight-coupling (MC) operation.
  • MC tight-coupling
  • the Xnew interface is connected to the TRP node of the high-frequency shunt base station NR BS, and the high-frequency shunt base station NR BS node has two TRPs on the high-frequency authorized carrier: TRP1 and TRP2, each of which has two service Beams deployed for The capacity of the hotspot area is enhanced.
  • the UE is only under the coverage of the Pcell, and thus only forms a single connection operation with the low frequency master anchor base station NR BS.
  • the UE gradually approaches the common coverage area of the Pcell+TRP1/2-Beams, so that the low-frequency master anchor base station NR BS decides to configure the RRM measurement parameters of the relevant high-frequency target serving TRP1/2 node for the UE, and let the UE Downlink RRM measurement is performed on the target TRP1/2-Beams.
  • the UE needs to perform downlink spatial time-frequency tracking synchronization attempt on the target TRP1/2-Beams.
  • Low frequency master control anchor base station NR BS node, high frequency shunt base station NR BS-TRP1/2 Both the node and the UE support the content capabilities of this application.
  • This example includes the following implementation steps:
  • Step 301 The low-frequency master anchor base station NR BS configures, by the RRC message RRC Connection Reconfiguration, the parameters of the RRM measurement performed by the UE on the target candidate service TRP1/2 node, and allows the UE to perform downlink RRM-related measurement on the target TRP1/2-Beams.
  • Step 302 The UE performs search tracking, spatial time-frequency synchronization, and RRM measurement of the target Beams based on the RRM measurement parameters configured by the low-frequency master anchor point base station NR BS, and performs downlink common synchronization by the respective two Beams transmissions under the jurisdiction of TRP1/2.
  • the signal is tracked by the Beam.
  • the UE After a period of synchronization training, the UE first obtains the downlink “BF coarse synchronization substate” of the first best TRP1-Beam2, and after a period of synchronization training, the UE obtains the first The downlink "BF coarse synchronization substate" of an optimal TRP1-Beam1, after a period of synchronization training, the UE obtains the downlink "BF fine synchronization substate” of the second best TRP2-Beam2, and then after a period of time. After the synchronization training, the UE obtains the downlink "BF fine synchronization substate" of the second best TRP2-Beam1.
  • Step 303 The UE performs a preliminary measurement of the downlink RRM obtained by tracking the services TRP1-Beam1, TRP1-Beam2, TRP2-Beam1, and TRP2-Beam2 according to a new RRM evaluation model specified in the NR system.
  • the intermediate measurement sample value is obtained
  • the dynamic analysis evaluation value is obtained
  • the UE reports to the low frequency master anchor point base station NR BS for each target candidate Beams through the RRC message Measurement Report.
  • the RRM measurement result may include: a “BF coarse/fine synchronization sub-state” of the UE and each target candidate Beams in real time, an associated RRM movement event evaluation result, and a measurement result.
  • Step 304 The low-frequency master anchor base station NR BS learns that the UE has implemented the downlink “BF coarse synchronization sub-state” with the first best TRP1-Beam2 based on the result reported by the UE, and other conditions of the TRP1 node meet the preset condition requirement. At the same time, it is also learned that the UE has implemented the downlink "BF fine synchronization substate" with the second best TRP2-Beam2, and other conditions of the TRP2 node satisfy the preset condition requirement, and thus are determined to be the served UE and the high frequency offload base station NR BS.
  • -TRP1/2 establishes a high-low frequency three-connection operation, in accordance with the three-connection operation establishment procedure of the NR system specification, establishes RL1 on TRP1-Beam2, establishes RL2 on TRP2-Beam2, and performs uplink-downlink data offload transmission.
  • the low frequency master anchor base station NR BS continues to command the UE with TRP1-Beam1 Maintaining the downlink "BF coarse synchronization substate" that is already in the middle, commanding the UE and TRP2-Beam1 to maintain the downlink "BF fine synchronization substate" that is already in the downlink.
  • Both the RL1 and the RL2 established by the low-frequency master anchor base station NR BS for the UE may be in an active state, and simultaneously perform uplink and downlink data offload transmission.
  • Step 305 The high frequency shunt base station NR BS receives the high and low frequency triple connection operation addition request message NR BS Addition Request sent by the low frequency master anchor point base station NR BS through the Xnew interface, and the activated target RL1 and the activated target RL2 respectively Establishing the relevant configuration information, the high-frequency shunt base station NR BS can determine that the TRP1 has also implemented the uplink "BF coarse synchronization sub-state" with the served UE in Beam1/2 and the associated uplink RRM measurement result is good, the high-frequency shunt base station NR BS It can also be judged that TRP2 has also implemented the uplink "BF fine synchronization sub-state" with the served UE in Beam1/2 and the associated uplink RRM measurement result is good, so the high-frequency shunt base station NR BS feeds back to the low-frequency master anchor through the Xnew interface.
  • the point base station NR BS message NR BS Addition Request Ack agrees to perform a high and low frequency triple connection setup operation, and agrees to establish and activate RL1 on TRP1-Beam2, and establish and activate RL2 on TRP2-Beam2.
  • Step 306 The low-frequency master anchor base station NR BS configures the UE to perform high-low frequency tight coupling three-connection operation through the RRC message RRC Connection Reconfiguration, and thereafter the UE can simultaneously from the low-frequency master anchor point base station NR BS-RL and the high-frequency shunt base station NR
  • the uplink and downlink user service transmission data is performed on the three wireless links of BS-TRP1-RL1 and TRP2-RL2.
  • TRP1-RL1 can switch back and forth between TRP1-Beam2 and TRP1-Beam1 without data transmission pause interrupt.
  • TRP2-RL2 can perform no data transmission pause between TRP2-Beam2 and TRP2-Beam1. Interrupted back and forth movement switching.
  • the low frequency master anchor base station NR BS may repeat the flow actions of steps 301 to 306 as the UE moves to a wide range or changes in the wireless environment.
  • FIG. 11 is a structural block diagram of a beam management apparatus according to an embodiment of the present application. As shown in FIG. 11, the beam management apparatus of this embodiment includes:
  • the establishing module 112 is configured to establish and maintain spatial time-frequency tracking synchronization between multiple target beams in the target TRP;
  • the switching module 114 is configured to generate an abnormality in the beam in the source TRP, and after receiving the command sent by the master anchor base station, switch from the beam in the source TRP to the target beam in the target TRP;
  • the beam-to-beam moving switching time is solved by establishing and maintaining a spatial time-frequency tracking synchronization between multiple target beams in the target TRP before the beam in the source TRP is abnormal.
  • FIG. 12 is a block diagram (1) of an exemplary structure of a beam management apparatus according to an embodiment of the present application. As shown in FIG. 12, the device may include: in addition to the device shown in FIG.
  • the adding module 122 is configured to additionally add and activate the use target beam when the beam in the source TRP is not abnormal and the target beam in the target TRP meets the specified condition.
  • the target beam is additionally added and activated so that data can be transmitted in parallel.
  • FIG. 13 is a block diagram (2) of an exemplary structure of a beam management apparatus according to an embodiment of the present application. As shown in FIG. 13, the device may include: in addition to the device shown in FIG.
  • the obtaining module 132 is configured to obtain the first best optimal measurement result in multiple target TRPs according to the RRM measurement evaluation model before the establishing module 112 establishes and maintains the spatial time-frequency tracking synchronization between the target beam and the target TRP. Beam information and second best beam information with poor measurement results;
  • the sending module 134 is configured to send the first optimal beam information and the second best beam information to the master anchor base station by using an RRC uplink message, so that the master anchor base station downlinks in the target TRP.
  • FIG. 14 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application, and As shown in FIG. 14, the establishing module 112 can include:
  • the first establishing unit 142 is configured to establish and maintain spatial time-frequency tracking synchronization between the second best beam in the source TRP when the target TRP is the source TRP and the beam to be switched or added is the first best beam. Wherein the second best beam is in a state that is temporarily not activated for use; or
  • the UE can implement fast mobile switching between beams within the TRP, or fast mobile switching between the TRPs, and the pause time and packet loss rate of the user data transmission are greatly reduced. .
  • the establishing module 112 may further include: a fourth establishing unit 152 configured to establish and maintain and offload additional RLs deactivated between the base stations when the target TRP is a TRP other than the source TRP.
  • the switching module 114 can include:
  • the first switching unit 162 is configured to: after the target TRP is the source TRP and the currently served beam is the first best beam, after receiving the command sent by the master anchor base station, the first most from the source TRP The good beam is switched to the second best beam in the source TRP; or
  • the third switching unit is configured to, after receiving the command sent by the master anchor base station, when the target TRP is a TRP other than the source TRP
  • the first best beam of the source TRP is switched to the second best beam within the target TRP.
  • the apparatus shown in FIG. 16 is configured to enable the UE to switch from the first best beam of the source TRP to the second best beam in the source TRP, or to switch from the first best beam of the source TRP to The first best beam in the target TRP, or the first best beam from the source TRP is switched to the second best beam in the target TRP, further implementing fast moving switching between beams.
  • FIG. 17 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (six). As shown in FIG. 17, the adding module 122 may include:
  • the first adding unit 172 is configured to maintain the first best of the source TRP after receiving the command sent by the master anchor base station when the target TRP is the source TRP and the currently served beam is the first best beam. The beam is unchanged, adding and activating the second best beam within the source TRP; or
  • the first adding unit 172 is equally replaced with the second adding unit, wherein the second adding unit is configured to maintain the source after receiving the command sent by the master anchor base station when the target TRP is a TRP other than the source TRP.
  • the first best beam and the second best beam of the TRP are unchanged, and the first best beam and the second best beam within the target TRP are added and activated.
  • FIG. 18 is a block diagram showing an exemplary structure of a beam management apparatus according to an embodiment of the present application (7).
  • the apparatus may include, in addition to the module shown in FIG. 11, an activation module 182 configured to switch from the first best beam of the source TRP to or additionally add the first part of the target TRP.
  • the device may further include: a maintenance module 192 in addition to the module shown in FIG. After the beam from the source TRP is switched to the target beam in the target TRP, the beam in the source TRP is maintained to make the beam in a normal state.
  • the abnormality may include: the offloading base station TRP or the hardware failure of the terminal UE for transmitting and receiving beams, the uplink and downlink beam space of the current service or the time-frequency out-of-synchronization state, and the RRM signal strength or quality is lower than a predetermined one. Threshold.
  • the one or more modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, implementing the foregoing modules by the same processor; or by different processing. Implement the above modules.
  • the beam management method provided in this embodiment includes the following steps:
  • Step S2002 determining whether an abnormality occurs in a beam in the source sending and receiving point TRP;
  • Step S2004 if the beam in the source TRP is abnormal, the UE is instructed to switch from the beam in the source TRP to the target beam in the target TRP.
  • Step S2004 if the beam in the source TRP is abnormal and the target beam in the target TRP meets the specified condition, the UE is instructed to additionally add and activate the target beam.
  • the target beam is in a state in which the time-frequency tracking synchronization is established and maintained.
  • the base station instructs the UE to switch from the beam in the source TRP to the target beam in the target TRP, and the beam in the source TRP is not abnormal and within the target TRP.
  • the target beam satisfies the specified condition, instructing the UE to additionally add and activate the use target beam, wherein the target beam is in a state in which the space time tracking synchronization is established and maintained.
  • the beam management apparatus of this embodiment includes:
  • the determining module 2102 is configured to determine whether an abnormality occurs in a beam in the source sending and receiving point TRP;
  • the first indication module 2104 is configured to: when the beam in the source TRP is abnormal, instruct the UE to switch from the beam in the source TRP to the target beam in the target TRP;
  • the second indication module 2106 is configured to: when the target beam in the source TRP does not abnormal and the target beam in the target TRP meets the specified condition, instruct the UE to additionally add and activate the use target beam;
  • the target beam is in a state that has been established and maintains spatial time-frequency tracking synchronization.
  • the base station in the source TRP when the base station in the source TRP is abnormal, the base station instructs the UE to switch from the beam in the source TRP to the target beam in the target TRP, and the beam in the source TRP is not abnormal and the target TRP
  • the target beam within the range satisfies the specified condition, indicating that the UE additionally adds and activates the use target beam, wherein the target beam is in a state in which the space time tracking synchronization is established and maintained.
  • the embodiment of the present application also provides a computer readable medium.
  • the computer readable medium described above may be arranged to store program code for performing the following steps:
  • the computer readable medium described above may be further configured to store program code for performing the following steps:
  • the UE is additionally added and activated to use the target beam.
  • the target beam is in the established state and maintains the space time-frequency tracking synchronization state. .
  • the computer readable medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or A variety of media such as optical discs that can store program code.
  • the processor may perform the above steps S1, S2 in accordance with stored program code in the computer readable medium.
  • the processor may perform the above steps S3, S4, and S5 according to the program code stored in the computer readable medium.
  • Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the embodiment of the present application provides a beam management method and device, which reduces the inter-beam moving switching time.

Abstract

一种波束管理方法，包括：建立且维护和目标发送接收点TRP内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。

Description

波束管理方法及装置 技术领域
本申请涉及但不限于通信领域，尤其涉及一种波束管理方法及装置。
背景技术
在未来的第三代合作伙伴计划第五代移动通信技术(3rd Generation Partnership Project fifth Generation，简称为3GPP 5G)新无线接入(New RAT/Radio，简称为NR)系统中，高频段无线载波资源利用和操作将扮演着越来越重要的角色，通过载波聚合和紧耦合多连接等方式，可以将更宽阔的高频载波资源充分地聚合利用，以提高NR系统容量和吞吐率性能。
和传统全向式(Omni-Directional)或者扇区式(Sector)小区覆盖不同，高频小小区为了增加上下行无线覆盖和信道性能，通常发送端(TX，Transmitter)/接收端(RX，Receiver)侧需要进行波束成形(Beamforming)操作，即通过多天线相位技术，将波束定向发射/定向接收，这样可以汇聚发射功率/减少干扰。在高低频通信基站做紧耦合多连接的数据传输架构中，低频宏基站服务小区提供基本的无线覆盖，BF模式的高频小基站提供数据分流，当UE(User Equipment，用户设备)在同一宏基站服务小区内移动的时候，会发生高频微基站间的切换或者更多连接的数据传输。其中，当UE在同一发送接收点(TRP，Transmit Receive Point)内或者不同TRP之间发生波束切换(Beam Switch)移动切换操作时，存在波束间移动切换时间较大而导致UE数据吞吐率较低的问题。
发明概述
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。
本申请实施例提供了一种波束管理方法及装置，能够减少波束间移动切换时间。
根据本申请的第一方面，提供了一种波束管理方法，包括：建立且维护和目标发送接收点(TRP)内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从所述源TRP内的波束切换至所述目标TRP内的目标波束上。
在示例性实施方式中，若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则额外添加且激活使用目标波束。
在示例性实施方式中，在建立且维护和目标TRP内目标波束之间的空间时频跟踪同步之前，上述方法还可以包括：根据无线资源管理(RRM)测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；通过无线资源控制(RRC)上行消息，将所述第一最佳波束信息和所述第二最佳波束信息发送至主控锚点基站，以使所述主控锚点基站对所述目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，所述第一最佳波束信息和所述第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
在示例性实施方式中，建立且维护和目标发送接收点TRP内目标波束之间的空间时频跟踪同步可以包括：
在所述目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态；或者，
在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，所述第一最佳波束处于暂时不被激活使用的状态；或者，
在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态。
在示例性实施方式中，在所述目标TRP为除源TRP之外的TRP时，建立且维护和分流基站之间去激活的额外无线链路(RL)。
在示例性实施方式中，所述从所述源TRP内的波束切换至所述目标TRP内的目标波束上可以包括：
在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从所述源TRP的所述第一最佳波束切换至所述源TRP内的第二最佳波束上；或者，
在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第一最佳波束上；或者，
在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第二最佳波束上。
在示例性实施方式中，所述额外添加且激活使用目标波束可以包括：
在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的所述第一最佳波束不变，添加且激活使用所述源TRP内的第二最佳波束；或者，
在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用所述目标TRP内的第一最佳波束和第二最佳波束。
在示例性实施方式中，上述方法还可以包括：在从所述源TRP的所述第一最佳波束快速切换至或者额外添加所述目标TRP内的第一最佳波束，或者从所述源TRP的所述第一最佳波束切换至或者额外添加所述目标TRP内的第二最佳波束时，激活和分流基站之间额外的RL，其中，该RL被提前建立并处于去激活的状态。
在示例性实施方式中，在从所述源TRP内的波束切换至所述目标TRP内的目标波束上之后，上述方法还可以包括：维护所述源TRP内的波束，以使所述波束处于正常状态。
在示例性实施方式中，所述异常可以包括：分流基站TRP或者用户设备UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发 生失步子状态，RRM信号强度或者质量低于预定阈值。
根据本申请的第二方面，提供了一种波束管理方法，包括：判断源TRP内的波束是否发生异常；若源TRP内的波束发生异常，则指示UE从所述源TRP内的波束切换至目标TRP内的目标波束上；若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则指示UE额外添加且激活使用目标波束；其中，所述目标波束处于已建立且维护空间时频跟踪同步的状态。
根据本申请的第三方面，提供了一种波束管理装置，包括：建立模块，配置为建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；切换模块，配置为若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从所述源TRP内的波束切换至所述目标TRP内的目标波束上。
在示例性实施方式中，上述装置还可以包括：添加模块，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，额外添加且激活使用目标波束。
在示例性实施方式中，上述装置还可以包括：获取模块，配置为在所述建立模块建立且维护和目标TRP内目标波束之间的空间时频跟踪同步之前，根据RRM测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；发送模块，配置为通过RRC上行消息，将所述第一最佳波束信息和所述第二最佳波束信息发送至主控锚点基站，以使所述主控锚点基站对所述目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，所述第一最佳波束信息和所述第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
在示例性实施方式中，所述建立模块可以包括：
第一建立单元，配置为在所述目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态；或者，
第二建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建 立且维护和所述目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，所述第一最佳波束处于暂时不被激活使用的状态；或者，
第三建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态。
在示例性实施方式中，所述建立模块还可以包括：第四建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建立且维护和分流基站之间去激活的额外RL。
在示例性实施方式中，所述切换模块可以包括：
第一切换单元，配置为在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从所述源TRP的所述第一最佳波束切换至所述源TRP内的第二最佳波束上；或者，
第二切换单元，配置为在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第一最佳波束上；或者，
第三切换单元，配置为在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第二最佳波束上。
在示例性实施方式中，所述添加模块可以包括：
第一添加单元，配置为在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的所述第一最佳波束不变，添加且激活使用所述源TRP内的第二最佳波束；或者，
第二添加单元，配置为在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用所述目标TRP内的第一最佳波束和第二最佳波束。
在示例性实施方式中，上述装置还可以包括：激活模块，配置为在从所 述源TRP的所述第一最佳波束切换至或者额外添加所述目标TRP内的第一最佳波束，或者从所述源TRP的所述第一最佳波束切换至或者额外添加所述目标TRP内的第二最佳波束时，激活和分流基站之间额外的RL，其中，该RL被提前建立并处于去激活的状态。
在示例性实施方式中，上述装置还可以包括：维护模块，配置为在从所述源TRP内的波束切换至所述目标TRP内的目标波束上之后，维护所述源TRP内的波束，以使所述波束处于正常状态。
在示例性实施方式中，所述异常可以包括：分流基站TRP或者用户设备UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发生失步子状态，RRM信号强度或者质量低于预定阈值。
根据本申请的第四方面，提供了一种波束管理装置，包括：判断模块，配置为判断源TRP内的波束是否发生异常；第一指示模块，配置为在源TRP内的波束发生异常时，指示UE从所述源TRP内的波束切换至目标TRP内的目标波束上；第二指示模块，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，指示UE额外添加且激活使用目标波束；其中，所述目标波束处于已建立且维护空间时频跟踪同步的状态。
根据本申请的又一个方面，还提供了一种计算机可读介质。该计算机可读介质设置为存储用于执行以下步骤的程序代码：
建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从所述源TRP内的波束切换至所述目标TRP内的目标波束上。
通过本申请，建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。也就是说，本申请通过在源TRP内的波束发生异常之前或者源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件之前，建立且维护和目标发送接收点TRP内多条目标波束之间的空间时频跟踪同步，如此，达到了减少波束间移动切换时间的技术效果。
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是高频小基站波束成形(Beamforming)操作示意图；
图2是高低频通信基站通过紧耦合做多连接的数据传输架构图；
图3是从“粗同步训练”到“细同步训练”的示意图；
图4是LTE RRM测量评估模型的示意图；
图5是UE在双连接数据传输中，在源TRP和目标TRP之间的切换示意图；
图6是根据本申请实施例的波束管理方法的流程图；
图7是根据本申请实施例的UE在双连接数据传输中，在源Beam和目标Beam之间的无缝切换示意图；
图8是根据本申请实施例的波束管理方法的示例示意图(一)；
图9是根据本申请实施例的波束管理方法的示例示意图(二)；
图10是根据本申请实施例的波束管理方法的示例示意图(三)；
图11是根据本申请实施例的一种波束管理装置的结构框图；
图12是根据本申请实施例的波束管理装置的示例性结构框图(一)；
图13是根据本申请实施例的波束管理装置的示例性结构框图(二)；
图14是根据本申请实施例的波束管理装置的示例性结构框图(三)；
图15是根据本申请实施例的波束管理装置的示例性结构框图(四)；
图16是根据本申请实施例的波束管理装置的示例性结构框图(五)；
图17是根据本申请实施例的波束管理装置的示例性结构框图(六)；
图18是根据本申请实施例的波束管理装置的示例性结构框图(七)；
图19是根据本申请实施例的波束管理装置的示例性结构框图(八)；
图20是根据本申请实施例的另一波束管理方法的流程图；
图21是根据本申请实施例的另一波束管理装置的结构框图。
详述
下文中将参考附图并结合实施例来详细说明本申请。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组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
图1是一种高频小基站波束成形(Beamforming，简称为BF)的操作示意图。如图1所示，在低频宏基站小区的广覆盖下，运营商可以对部分热点(Hotspot)区域通过高频(mmWave)小基站小小区进行容量增强。和传统全向式(Omni-Directional)或者扇区式(Sector)小区覆盖不同，高频小小区为了增加上下行无线覆盖和信道性能，通常发送端(TX，Transmitter)/接收端(RX，Receiver)侧需要进行波束成形(Beamforming)操作，即通过多天线相位技术，将波束定向发射/定向接收，这样可以汇聚发射功率/减少干扰。图1中的发送接收点(Transmit Receive Point，简称为TRP)簇(Cluster)就是以多个波束(Beams)(>1)形式来发射信号的。
在图1中的波束成形高频通信基站小小区的部署方式，可以映射到图2所示的高低频通信基站做紧耦合多连接的数据传输架构。针对图2中基站和用户设备(User Equipment，简称为UE)的空中接口，细箭头线表示Uu口控制面信令，粗箭头线表示用户面数据。低频宏基站服务小区提供基本的无线覆盖，BF模式的高频小基站提供数据分流，当UE在同一宏基站服务小区内移动的时候，会发生高频微基站间的切换或者更多连接的数据传输。
以过去通用移动通信系统/长期演进(Universal Mobile Telecommunications System/Long Term Evolution，简称为UMTS/LTE)系统为例，由于主要工作在低频段(<6GHz)，因此对应基站的TRP通常采取全向和扇区式发收模式，因此对应的下行公共信道/信号(即下行公共信道和信号中至少之一)有着较广阔的覆盖区域，即当UE进入到以TRP为圆心的特 定半径之内，就可以在任意的时间、地点或方向上接收到下行公共信道/信号，实现下行时频同步、小区发现驻留、系统消息读取、上行随机接入、导频测量等基本操作。
由于高频段信道的路损(Path loss)和衰减相当严重，为了以小发射功率来实现远距离覆盖和空间时频信号干扰隔离，NR高频基站TRP通常采取波束成形的发收模式，因此对应的下行公共信道/信号有着较狭窄的覆盖区域(对应着的服务小区比较狭长状)，即当UE进入到以TRP为圆心的特定半径之内，只能在特定的时间、地点或方向上通过空间搜索(Spatial Search)，才能接收到下行公共信道/信号，以实现上述基本功能。随着UE在水平和垂直方向上的移动，UE容易脱离Beams的覆盖，称为空间时频失步(假设TRP/UE不能实现快速的彼此Beam跟踪)，空间时频失步之后相当于UE进行到弱覆盖区域，不能有效维持上下行时频同步、上行随机接入及高效数据传输中至少之一，因此，UE必须尽快重新搜索测量到合适的小区或Beam等，恢复空间时频同步状态。
假设TRP节点内只有一个波束成形链(BF chain)，TRP采取周期环形扫射的方式发射任何下行信道/信号(即下行信道和信号中至少之一)。当UE成功跟踪并且驻留在高频波束成形某服务小区中，如果有数据传输的需求，UE需要先和TRP建立且维护无线链路(Radio Link，简称为RL)，进入到无线资源控制连接(Radio Resource Control_CONNECTED，简称为RRC_CONNECTED)模式。随后TRP会为UE分配专有的时频资源，基于调度方式进行上下行数据块传输。
下行方向，UE一方面需要通过TRP发射的下行公共同步信号来保持空间/时频/时频的最佳跟踪状态(即空间、时频及时频的最佳跟踪状态中的至少之一)，另一方面UE需要通过TRP发射的下行专有参考信号来测量和反馈信道状态信息(Channel State Information，简称为CSI)。
上行方向，TRP一方面需要通过UE发射的上行公共同步信号来保持空间/时频/时频的最佳跟踪状态，另一方面TRP需要通过UE发射的上行专有参考信号来测量CSI。
从本意上，上下行专有参考信号是用来进行专有信道的测量和解调中至 少一项的，但是否也可以服务于Beam跟踪的目的，即下行方向，UE是否可以只监听接收TRP发射的下行专有参考信号，来保持下行空间/时频/时频的最佳跟踪状态；上行方向，TRP是否可以只监听接收UE发射的上行专有参考信号，来保持上行空间/时频/时频的最佳跟踪状态。当发生无线链路失败(Radio Link Failure，简称为RLF)的时候(比如遭遇阻塞(Blockage)或者遮蔽(Deafness))，UE上下行自动进入空间/时频/时频失步子状态(但仍然是RRC_CONNECTED模式)，此时UE仍然需要在空间时频失步点附近继续监听源服务TRP的下行专有参考信号，而源TRP仍然需要在空间时频失步点附近继续监听上行专有参考信号，从而UE努力快速恢复和源服务TRP之间的波束同步子状态。如果UE无法在特定时间内恢复波束同步子状态，那么UE需要先退出RRC_CONNECTED状态，重新监听接收源服务TRP和其它相邻TRP的下行公共信道/信号，此时UE可以驻留到其它相邻TRP的服务小区中，再重新建立且维护专有RL。
以下行方向为例，当TRP发射BF同步训练信号的时候，开始是按照特定离散的角度环扫发射的(比如水平0，30，60，90，120….360度这样的规律)，而UE也可能按照特定离散的角度定向接收。经过初步的“粗同步训练”之后，TRP和UE大致能够确定对方的最佳离散角度，之后可以进一步进入“细同步训练”阶段，使得TRP和UE能够更加精准地确定对方的连续角度(“细同步训练”的水平角度调整粒度比之前环扫发射的离散角度要小)，细同步训练使得路损最小。之后随着UE的移动，TRP和UE根据对方发射的BF同步训练信号，继续不断微调发射和接收的角度。上述过程如图3所示。
“细同步训练”是基于通信节点硬件本地实现的可选优化功能，在“细同步训练”完成之后，TRP和UE侧才能保证波束干扰信号(Beam Reference Signal，简称为BRS)的最佳无线资源管理(Radio Resource Management，简称为RRM)结果和最可靠的测量精度，和无线链路(Radio Link，简称为RL)专有信号的最佳接收解调性能结果，因此可以处于最佳RRM测量模式和数据传输模式，此时TX端信号发射效率和RX端接收的信噪比最大；否则根据仿真显示，如果空间时频同步训练的精度结果不够，接收信噪比将减 小，TRP和UE之间不能处于最佳RRM测量模式和数据传输模式，甚至更坏的情况TRP和UE之间发生空间时频失步，它们只能处于最差的RRM测量模式和数据传输模式。因此，为了保证UE对做波束成形通信基站下行参考信号的RRM测量质量和精度，UE必须对目标BF通信基站所辖的Beams建立且维护并且维持“BF粗(细)同步子状态”，否则测量获得的RRM测量结果不准确和不可靠。
在做多连接数据传输模式的UE移动过程中，非BF模式的锚点通信基站，通常基于UE的RRM测量上报结果，为UE选择和配置最好的目标BF模式分流基站TRP，或做TRP间的移动切换，或者增加配置更多的TRP，进行更多连接的数据传输。按照LTE RRM测量评估模型，如图4所示，针对某个特定的测量对象(LTE目标小区或者TRP下的特定Beam)和测量评估量，A为UE根据内部实现而测量得到的初步测量采样值，B为UE在一定的采样周期内，通过层1过滤器(Layer 1Filtering)进行层1过滤处理后而获得的中间测量采样值，C为UE在一定的采样周期内，通过层3过滤器(Layer 3 Filtering)进行层3过滤处理后而获得的动态分析评估值，C’为对比分析评估值(和C有相同的测量评估量纲)，D为UE在测量上报消息(MR，Measurement Report)中上报的内容结果值。旧RRM测量模型中，层3过滤器和评估和上报准则(Evaluation of reporting Criteria)模块的行为和参数使用方式都是被LTE协议标准化的，相关的配置参数来自无线资源控制(Radio Resource Control，简称为RRC)空口消息的配置信令。
当前LTE协议已经为不同的移动切换和多连接配置操作目的，定义了多种RRM测量事件类型，比如，事件A1(Event A1)表示：UE对当前LTE服务小区(可以是一个或多个)导频信号的强度参考信号接收功率(Reference Signal Receiving Power，简称为RSRP)或者参考信号接收质量(Reference Signal Receiving Quality，简称为RSRQ)的测量动态分析评估值结果(已经经过了层3过滤的处理)，和源基站(eNB)已经通过RRC空口信令配置的门限值(Thresh)相比较结果更好(中间还有一个神经缓冲偏移值Hys)且持续超过一段事件的触发时间(TTT，Time To Trigger)，这样UE触发本地产生A1事件，触发MR上报；否则不能产生A1事件。其他各种事件的含义 可以参考LTE协议。上述旧RRM测量模型和定义有如下特点：对于某种RRM测量事件，只是关联到某一个确定的源服务小区和某一个确定的相邻服务小区(Neighbor Cell)中的至少一项，形成1对1的小区测量对比评估配对(Pair)。
对于处于波束成形工作模式下的分流微基站TRP，其内部所辖的多个Beams(>1)工作特点方式和传统LTE基站内所辖的多个LTE服务小区有很大不同，如上所述。如果沿用LTE RRM测量评估机制，当某个目标TRP 2所辖目标服务Beam对应的RRM测量结果明显好于某个源TRP 1所辖的源服务Beam，UE很可能会触发对应的移动事件，并且通过测量报告(Measurement Report，简称为MR)消息上报给锚点控制宏基站。此后锚点控制宏基站会通过RRC重配消息，让UE建立且维护和该目标TRP 2所辖目标服务Beam的无线链路(因为此目标服务Beam链路质量更好)，而删除UE之前和源TRP 1所辖源服务Beam的RL(因为此源服务Beam链路质量变差了)，该过程如图5所示。UE原本处于主基站宏服务小区(MeNB)和TRP 1某源服务Beam的双连接数据传输状态，后来由于UE移动，被锚点切换重配到MeNB和TRP 2某Beam的双连接数据传输状态。
由于每个分流基站TRP内通常配置且激活有多个服务Beams(以特定方式朝着不同物理方位扫射进行信号覆盖)，而UE会对不同的Beams进行上述的粗(细)空间时频跟踪同步尝试和相伴随的RRM测量，以建立且维护和维持在“BF粗(细)同步子状态”，从而获得较精准可靠的RRM测量结果，因此UE可能会频繁地在同一TRP内或者不同TRP之间发生波束切换(Beam Switch)移动切换操作。即在同TRP场景下，从某个信号不好的源服务Beam1，允许UE本地判决和自动切换到另外的信号更好的目标Beam2上，这个过程需要UE消耗一定的同步切换过渡时间，以和目标服务Beam2建立且维护完成“BF粗(细)同步子状态”之后，RL上被暂停的数据传输才能恢复；在不同TRP之间的场景下，从源TRP1内某个信号不好的源Beam1，被RRC命令切换到目标TRP2内信号更好的目标Beam2上，这个过程不仅需要UE消耗一定的同步切换过渡时间，源服务TRP1和目标服务TRP2之间还需要执行切换准备和协调过程，待UE和目标服务Beam2建立且维护完成“BF粗(细)同步子状态”且UE和目标服务TRP2建立且维护完成了新RL之后，源RL 上被暂停的数据传输，才能在新RL上恢复。
上述传统的波束间移动切换方式表明，UE的数据传输被迫暂停中断一段时间，中断的时间长短取决于UE和目标服务TRP/Beam建立且维护完成“BF粗(细)同步子状态”，以及和目标TRP建立且维护新RL的总时间，在某些情况下，这个总时间会较大，从而会影响到UE的数据吞吐率和用户体验。
图6是根据本申请实施例的一种波束管理方法的流程图。如图6所示，本实施例提供的波束管理方法包括如下步骤：
步骤S602，建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；
步骤S604，若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。
在本实施例中，通过建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。也就是说，本实施例通过在源TRP内的波束发生异常之前，建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步，如此，解决了波束间移动切换时间较大所导致的UE数据吞吐率较低的问题，达到了减少波束间移动切换时间的技术效果。
如图2所示的场景中，UE和非BF模式的主控锚点基站(可以是MeNB或者NR基站节点)已经建立了RRC控制信令的无线承载(Signaling Radio Bearer，简称为SRB)和若干个用户面数据承载(Data Radio Bearer，简称为DRB(s))。主控锚点基站和若干个处于BF模式的分流基站TRP节点(主要是高频部署，但也不排除中低频基站施加BF操作的情况)通过通信基站间的标准化接口相互连接(可以是LTE X2或者NR Xnew接口)，因此，可以将DRB(s)用户数据进行上下行的旁路用户数据分流和并行的多连接数据传输。
在UE和任何BF模式分流基站TRP建立RL之前(即UE还没有进入到 多连接数据传输模式)，主控锚点基站通过RRC信令配置给UE相关的测量参数，UE基于这些参数，对目标BF分流基站TRP所辖的所有或者多个Beams(>1)进行下行空间时频跟踪同步、下行RRM测量，即UE需要先对Beams进行下行空间时频同步训练和下行时频同步尝试，通过下行波束训练的过程，尝试找到目标TRP的公共下行信道/信号(包括下行空间时频同步训练信号、BRS导频信号、系统广播消息信号等)的最佳发射角度和UE自己的最佳接收角度，继而进行下行RRM测量，获得每条候选服务Beams对应的精准RRM测量结果。
UE按照图4中说明的RRM测量评估模型或者其他增强的RRM评估模型进行RRM测量评估操作，将每条目标候选服务Beams对应的RRM测量结果(如BRS导频的采样信号强度或者质量)采样和记录下来，继而能从中分析评估出每个目标候选服务TRP内的第一最佳Beam1和第二最佳Beam2。
UE通过测量上报MR或者其他RRC相关消息，上报给主控锚点基站多个目标候选服务TRP内的第一最佳Beam1和第二最佳Beam2相关信息，其中包括但不限于TRP的工作频点带宽、物理逻辑标识、高层逻辑标识、Beams的物理逻辑标识和方位特征值等。
基于UE上报的RRM测量信息，主控锚点基站执行下面的操作：
通过RRC消息(重)配置和命令：UE和第一最佳目标服务TRP 1内的第一最佳Beam1尝试建立或维持空间时频跟踪同步，进入或者维持在“BF粗(细)同步子状态”，并且和第一最佳目标服务TRP 1建立且激活新RL1；同时，UE和第一最佳目标服务TRP 1内的第二最佳Beam2也尝试建立或维持空间时频跟踪同步，提前进入或者维持在“BF粗(细)同步子状态”；同时示例性地，UE和第二最佳目标服务TRP 2内的第一最佳Beam1也尝试建立或维持空间时频跟踪同步，提前进入或者维持在“BF粗(细)同步子状态”，并且和第二最佳目标服务TRP 2提前预备建立但去激活新的RL2(待激活之后才能用于数据分流传输)。进一步示例性地，UE还可以和第二最佳目标服务TRP 2内的第二最佳Beam2尝试建立或维持空间时频跟踪同步，提前进入或者维持在“BF粗(细)同步子状态”。
UE用本地变量表记录着上述多个目标服务Beams的工作状态，例如表 1所示：
Figure PCTCN2017094323-appb-000001
表1本实施例多目标服务Beams的预粗(细)同步/配置/激活
正常状态下，UE和第一最佳目标服务TRP 1建立且激活新RL1(可以用于数据分流传输)，UE在第一最佳目标服务TRP1内的第一最佳Beam1上处于BF粗/细同步子状态(即BF粗同步子状态和细同步子状态中至少之一)，因此UE在RL1上可以进行高质量的数据分流传输(此时UE处于高低频紧耦合双连接操作)；当UE在第一最佳目标服务TRP 1内的第一最佳Beam1上发生BF失步子状态或者RRM信号强度质量不好的时候，UE本地快速切换到已经处于BF粗/细同步子状态的第一最佳目标服务TRP 1内的第二最佳Beam2上(UE已经提前做好了空间时频同步操作)，因此在RL1上的数据分流传输不需要暂停中断。当UE在第一最佳目标服务TRP 1内的第一最佳Beam1和第二最佳Beam2上都同时发生BF失步子状态或者RRM信号强度质量都不好的时候，主控锚点基站通过RRC消息重配置命令UE，切换到已经处于BF粗/细同步子状态的第二最佳目标服务TRP 2内的第一最佳Beam1上，并且激活之前已经预配置好的RL2，因此UE可以在RL2上继续进行高质量的数据分流传输，数据分流传输不需要暂停中断(此时UE还是处于高低频紧耦合双连接操作，主控锚点基站可以删除或者去激活原RL1)。当UE在第二最佳目标服务TRP 2内的第一最佳Beam1上发生BF失步子状态或者RRM信号强度质量不好的时候，UE本地快速切换到已经处于BF粗 /细同步子状态的第二最佳目标服务TRP 2内的第二最佳Beam2上(因为UE已经提前做好了空间时频同步操作)，因此在RL2上的数据分流传输不需要暂停中断。上述内容如图7所示，UE处于双连接数据传输状态，可以有若干条预配置且空间时频同步完成的目标候选Beams。
通过本实施例，UE需要和2条(同TRP内)，或者3条(TRP之间)，或者4条(TRP之间)的目标候选服务Beams提前进行BF空间时频同步操作，并且尝试建立和维持在BF粗/细同步子状态。主控锚点基站为UE除了可以配置且激活一条RL，用于服务当前的数据分流操作外，还可以预配置但去激活另外一条备份的RL。当特定条件满足的时候，主控锚点基站再通过RRC重配置命令或者物理层控制命令激活之前预配置好的备份RL。因此UE能够实现TRP内部的波束件的快速移动切换，或者TRP之间的波束间的快速移动切换，用户数据传输的暂停中断时间和丢包率将被大大减少。
在一个示例性实施方式中，若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则额外添加且激活使用目标波束。通过额外添加且激活使用目标波束，使得可以并行传输数据。
在一个示例性实施方式中，在建立且维护和目标发送接收点TRP内目标波束之间的空间时频跟踪同步之前，本实施例的方法还可以包括以下步骤：
步骤S11，根据RRM测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；
步骤S12，通过RRC上行消息，将该第一最佳波束信息和该第二最佳波束信息发送至主控锚点基站，以使该主控锚点基站对该目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，该第一最佳波束信息和该第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
通过上述步骤S11和S12，获取多个可测量到的最佳目标TRP所辖的多个波束中测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息，并发送至主控锚点基站，进一步实现了波束间的快速移动切换。
在一个示例性实施方式中，建立且维护和目标TRP内目标波束之间的空 间时频跟踪同步可以包括以下步骤：
步骤S21，在该目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，该第二最佳波束处于暂时不被激活使用的状态；或者，
步骤S22，在该目标TRP为除源TRP之外的TRP时，建立且维护和该目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，该第一最佳波束处于暂时不被激活使用的状态；或者，
步骤S23，在该目标TRP为除源TRP之外的TRP时，建立且维护和该目标TRP内第二最佳波束之间的空间时频跟踪同步，其中，该第二最佳波束处于暂时不被激活使用的状态。
需要说明的是，上述步骤S22以及步骤S23中涉及到的除源TRP之外的TRP包括：除源TRP之外可测量得到的信号质量较佳的一个或者多个目标TRP，在此并不做任何限定。
通过上述步骤S21或者S22或者S23，使得UE能够实现TRP内部的波束件的快速移动切换，或者TRP之间的波束间的快速移动切换，用户数据传输的暂停中断时间和丢包率将被大大减少。
在示例性实施方式中，在目标TRP为除源TRP之外的TRP时，可以提前建立且维护和分流基站之间去激活的额外RL，以使UE在切换后进行数据传输。
在一个示例性实施方式中，从该源TRP内的波束切换至该目标TRP内的目标波束上可以包括以下步骤：
步骤S31，在该目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从该源TRP的该第一最佳波束切换至该源TRP内的第二最佳波束上；或者，
步骤S32，在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从该源TRP的该第一最佳波束切换至该目标TRP内的第一最佳波束上；或者，
步骤S33，在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从该源TRP的该第一最佳波束切换至该目标TRP内的第二最佳波束上。
通过上述步骤S31或者步骤S32或者步骤S33，使得终端可以从该源TRP的该第一最佳波束切换至该源TRP内的第二最佳波束上，或者，从该源TRP的该第一最佳波束切换至该目标TRP内的第一最佳波束上，或者，从该源TRP的该第一最佳波束切换至该目标TRP内的第二最佳波束上，进一步实现了波束间的快速移动切换。
在一个示例性实施方式中，额外添加且激活使用目标波束可以包括以下步骤：
步骤S41，在该目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的该第一最佳波束不变，添加且激活使用该源TRP内的第二最佳波束；或者，
步骤S42，在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用该目标TRP内的第一最佳波束和第二最佳波束。
通过上述步骤S41和S42，使得可以并行进行数据传输，提高了数据传输的速度。
在一个示例性实施方式中，本实施例的方法还可以包括：在从该源TRP的该第一最佳波束快速切换至或者额外添加该目标TRP内的第一最佳波束，或者从该源TRP的该第一最佳波束切换至或者额外添加该目标TRP内的第二最佳波束时，激活和分流基站之间额外的RL，其中，该RL被提前建立并处于去激活的状态。
在示例性实施方式中，在从该源TRP内的波束切换至该目标TRP内的目标波束上之后，本实施例的方法还可以包括：维护该源TRP内的波束，以使该波束处于正常状态。
在示例性实施方式中，上述异常可以包括：分流基站TRP或者UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发生失步子 状态，RRM信号强度或者质量低于预定阈值。
下面结合示例对本实施例进行举例说明。
图8是根据本申请实施例的波束管理方法的一种示例示意图。如图8所示，本示例中，UE处于双连接数据传输状态，可以有若干条提前预配置且空间时频同步完成的目标候选Beams。
下面结合图8进行说明。
某运营商部署和利用了高低频紧耦合做双连接(DC，Dual Connectivity)操作，在低频主控锚点基站MeNB所在的某授权载波上有Pcell(Primary cell，主小区)的服务宏小区覆盖，在远端通过X2接口，连接SeNB(辅基站)高频分流基站TRP节点，SeNB节点所在的某高频授权载波上有2个TRP:TRP1、TRP2，各自辖有2个服务Beams的部署，用于热点区域容量增强。
起始，UE仅仅处于Pcell的覆盖之下，因此仅仅和MeNB形成单连接操作。随着UE移动，UE逐渐靠近Pcell+TRP1-Beams的公共覆盖区域，从而MeNB决定为UE配置相关的高频目标服务TRP1/2节点的RRM测量参数，让UE对目标TRP1/2-Beams进行下行RRM测量，默认地UE需要先对目标TRP1/2-Beams进行下行空间时频跟踪同步尝试。非BF低频MeNB节点、BF高频SeNB-TRP1/2节点和UE都支持本申请的内容能力。
本示例包括以下实施步骤：
步骤101：主控锚点基站(MeNB)通过RRC消息RRC Connection Reconfiguration(RRC连接重配置消息)配置给UE对目标候选服务TRP1/2节点分别进行RRM测量的参数，让UE对目标TRP1/2-Beams进行下行RRM相关测量。
步骤102：UE基于MeNB配置的RRM测量参数，进行目标Beams的训练跟踪、空间/时频同步和RRM测量，通过TRP1/2所辖的各自2个Beams发射的下行公共同步信号，进行Beam训练跟踪，经过一段时间的同步训练之后，UE先获得和第一最佳TRP1-Beam1的下行“BF细同步子状态”，再经过一段时间的同步训练之后，UE再获得和第一最佳TRP1-Beam2的下行“BF细同步子状态”，再经过一段时间的同步训练之后，UE再获得和第二 最佳TRP2-Beam1的下行“BF粗同步子状态”，由于UE能力限制或者RRM测量配置参数约束，UE没有和TRP2-Beam2实现下行“BF粗/细同步子状态”。
步骤103：UE按照图4的RRM评估模型，对能够跟踪同步上的服务TRP1-Beam1、TRP1-Beam2和TRP2-Beam1所获得的下行RRM初步测量采样值结果，经过层1过滤处理后而获得中间测量采样值，再经过层3过滤处理后而获得动态分析评估值，UE随后通过RRC消息Measurement Report上报给MeNB每个目标候选Beams的RRM测量结果，内容可以包括：UE和每个目标候选Beams实时的“BF粗/细同步子状态”、相关的RRM移动事件评估结果和测量结果。
步骤104：MeNB基于UE上报的结果，获悉UE已经和第一最佳TRP1-Beam1实现下行“BF细同步子状态”，并且TRP1节点的其他条件满足预设的条件要求，决定为被服务UE和SeNB-TRP1建立高低频双连接操作，从而按照类似LTE的双连接操作建立流程，在TRP1-Beam1上建立RL1，进行上下行数据分流传输。与此同时，MeNB继续命令UE与TRP1-Beam2维持在已经处于的下行“BF细同步子状态”。MeNB还可以在TRP2-Beam1上提前预备建立好RL2，但是处于去激活状态，不能进行上下行数据分流传输；MeNB继续命令UE与TRP2-Beam1维持在已经处于的下行“BF粗/细同步子状态”。
步骤105：SeNB通过X2接口，接收到MeNB发来的高低频双连接操作添加请求消息(SeNB Addition Request)，和激活的目标RL1/去激活的目标RL2各自建立相关的配置信息，SeNB能够判断TRP1也已经和被服务UE在Beam1/2实现了上行“BF细同步子状态”并且相关的上行RRM测量结果良好，SeNB也能够判断TRP2也已经和被服务UE在Beam1实现了上行“BF细同步子状态”并且相关的上行RRM测量结果良好，因此SeNB通过X2接口，反馈给MeNB响应消息SeNB Addition Request Ack，同意进行高低频双连接建立操作，并且同意在TRP1-Beam1上建立且激活RL1，在TRP2-Beam1上提前预备建立但去激活RL2。
步骤106：MeNB通过RRC消息RRC Connection Reconfiguration配置给UE进行高低频紧耦合DC操作，此后UE可以同时从MeNB-RL和 SeNB-TRP1-RL1两条无线链路上进行上下行的用户业务传输数据。随着UE的移动，SeNB-TRP1-RL1可以在TRP1-Beam1和TRP1-Beam2之间进行无数据传输暂停中断的来回移动切换，UE也可以在TRP1和TRP2之间进行无数据传输暂停中断的来回移动切换；当RL2被MeNB下发的RRC信令激活之后，RL1可以同时被去激活，反之亦然。随着UE移动到各大范围之外或者无线环境的变化，MeNB可以重复步骤101至步骤106的流程动作。
图9是根据本申请实施例的波束管理方法的另一示例示意图。如图9所示，本示例中，UE处于双连接数据传输状态，可以有若干条提前预配置且空间时频同步完成的目标候选Beams。
下面结合图9进行说明。
某运营商部署和利用了高低频紧耦合做DC操作，在低频主控锚点基站NR BS所在的某授权载波上有Pcell的服务宏小区覆盖，在远端通过Xnew接口，连接高频分流基站NR BS的TRP节点，高频分流基站NR BS节点所在的某高频授权载波上有2个TRP:TRP1、TRP2，各自辖有2个服务Beams的部署，用于热点区域容量增强。
起始，UE仅仅处于Pcell的覆盖之下，因此仅仅和低频主控锚点基站(NR BS)形成单连接操作。随着UE移动，UE逐渐靠近Pcell+TRP1-Beams的公共覆盖区域，从而低频主控锚点基站NR BS决定为UE配置相关的高频目标服务TRP1/2节点的RRM测量参数，让UE对目标TRP1/2-Beams进行下行RRM测量，默认地UE需要先对目标TRP1/2-Beams进行下行空间时频跟踪同步尝试。低频主控锚点基站NR BS节点、高频分流基站NR BS-TRP1/2节点和UE都支持本申请的内容能力。
本示例包括以下实施步骤：
步骤201：低频主控锚点基站NR BS通过RRC消息RRC Connection Reconfiguration配置给UE对目标候选服务TRP1/2节点分别进行RRM测量的参数，让UE对目标TRP1/2-Beams进行下行RRM相关测量。
步骤202：UE基于低频主控锚点基站NR BS配置的RRM测量参数，进行目标Beams的搜索跟踪、空间时频同步和RRM测量，通过TRP1/2所辖 的各自2个Beams发射的下行公共同步信号，进行Beam训练跟踪，经过一段时间的同步训练之后，UE先获得和第一最佳TRP1-Beam2的下行“BF粗同步子状态”，再经过一段时间的同步训练之后，UE再获得和第一最佳TRP1-Beam1的下行“BF粗同步子状态”，再经过一段时间的同步训练之后，UE再获得和第二最佳TRP2-Beam2的下行“BF细同步子状态”，由于UE能力限制或者RRM测量配置参数约束，UE没有和TRP2-Beam1实现下行“BF粗/细同步子状态”。
步骤203：UE按照NR系统中规范的某种新RRM评估模型，对能够跟踪同步上的服务TRP1-Beam1，TRP1-Beam2和TRP2-Beam2所获得的下行RRM初步测量采样值结果，经过层1过滤处理后而获得中间测量采样值，再经过层3过滤处理后而获得动态分析评估值，UE随后通过RRC消息Measurement Report上报给低频主控锚点基站NR BS每个目标候选Beams的RRM测量结果，内容可以包括：UE和每个目标候选Beams实时的“BF粗/细同步子状态”、相关的RRM移动事件评估结果和测量结果。
步骤204：低频主控锚点基站NR BS基于UE上报的结果，获悉UE已经和第一最佳TRP1-Beam2实现下行“BF粗同步子状态”，并且TRP1节点的其他条件满足预设的条件要求，决定为被服务UE和高频分流基站NRBS-TRP1建立高低频DC操作，从而按照NR系统规范的双连接操作建立流程，在TRP1-Beam2上建立RL1，进行上下行数据分流传输。与此同时，低频主控锚点基站NR BS继续命令UE与TRP1-Beam1维持在已经处于的下行“BF粗同步子状态”。低频主控锚点基站(NR BS)还可以和TRP2-Beam2上提前预备建立好RL2，但是处于去激活状态，不能进行上下行数据分流传输；低频主控锚点基站(NR BS)继续命令UE与TRP2-Beam2维持在已经处于的下行“BF粗/细同步子状态”。
步骤205：高频分流基站NR BS通过Xnew接口，接收到低频主控锚点基站NR BS发来的高低频DC操作添加请求消息(NR BS Addition Request)，和激活的目标RL1/去激活的目标RL2各自建立相关的配置信息，高频分流基站NR BS能够判断TRP1也已经和被服务UE在Beam1/2实现了上行“BF粗同步子状态”并且相关的上行RRM测量结果良好，高频分流基站NR BS 也能够判断TRP2也已经和被服务UE在Beam2实现了上行“BF细同步子状态”并且相关的上行RRM测量结果良好，因此高频分流基站NR BS通过Xnew接口，反馈给低频主控锚点基站NR BS消息NR BS Addition Request Ack，同意进行高低频DC建立操作，并且同意在TRP1-Beam2上建立且激活RL1，在TRP2-Beam2上提前预备建立但去激活RL2。
步骤206：低频主控锚点基站NR BS通过RRC消息RRC Connection Reconfiguration配置给UE进行高低频紧耦合DC操作，此后UE可以同时从低频主控锚点基站NR BS-RL和高频分流基站NR BS-TRP1-RL1两条无线链路上进行上下行的用户业务传输数据。随着UE的移动，TRP1-RL1可以在TRP1-Beam2和TRP1-Beam1之间进行无数据传输暂停中断的来回移动切换，UE也可以在TRP1和TRP2之间进行无数据传输暂停中断的来回移动切换；当RL2被主控锚点基站NR BS下发的物理层信令激活之后，RL1可以同时被去激活，反之亦然。随着UE移动到各大范围之外或者无线环境的变化，低频主控锚点基站NR BS可以重复步骤201至步骤206的流程动作。
图10是根据本申请实施例的波束管理方法的另一示例示意图。如图10所示，本示例中，UE处于三连接数据传输状态，可以有若干条提前预配置且空间时频同步完成的目标候选Beams。
下面结合图10进行说明。
某运营商部署和利用了高低频紧耦合做多连接(MC，Multi-Connectivity)操作，在低频主控锚点基站NR BS所在的某授权载波上有Pcell的服务宏小区覆盖，在远端通过Xnew接口，连接高频分流基站NR BS的TRP节点，高频分流基站NR BS节点所在的某高频授权载波上有2个TRP:TRP1、TRP2，各自辖有2个服务Beams的部署，用于热点区域容量增强。
起始，UE仅仅处于Pcell的覆盖之下，因此仅仅和低频主控锚点基站NR BS形成单连接操作。随着UE移动，UE逐渐靠近Pcell+TRP1/2-Beams的公共覆盖区域，从而低频主控锚点基站NR BS决定为UE配置相关的高频目标服务TRP1/2节点的RRM测量参数，让UE对目标TRP1/2-Beams进行下行RRM测量，默认地UE需要先对目标TRP1/2-Beams进行下行空间时频跟踪同步尝试。低频主控锚点基站NR BS节点、高频分流基站NR BS-TRP1/2 节点和UE都支持本申请的内容能力。
本示例包括以下实施步骤：
步骤301：低频主控锚点基站NR BS通过RRC消息RRC Connection Reconfiguration配置给UE对目标候选服务TRP1/2节点分别进行RRM测量的参数，让UE对目标TRP1/2-Beams进行下行RRM相关测量。
步骤302：UE基于低频主控锚点基站NR BS配置的RRM测量参数，进行目标Beams的搜索跟踪、空间时频同步和RRM测量，通过TRP1/2所辖的各自2个Beams发射的下行公共同步信号，进行Beam训练跟踪，经过一段时间的同步训练之后，UE先获得和第一最佳TRP1-Beam2的下行“BF粗同步子状态”，再经过一段时间的同步训练之后，UE再获得和第一最佳TRP1-Beam1的下行“BF粗同步子状态”，再经过一段时间的同步训练之后，UE再获得和第二最佳TRP2-Beam2的下行“BF细同步子状态”，再经过一段时间的同步训练之后，UE再获得和第二最佳TRP2-Beam1的下行“BF细同步子状态”。
步骤303：UE按照NR系统中规范的某种新RRM评估模型，对能够跟踪同步上的服务TRP1-Beam1、TRP1-Beam2、TRP2-Beam1和TRP2-Beam2所获得的下行RRM初步测量采样值结果，经过层1过滤处理后而获得中间测量采样值，再经过层3过滤处理后而获得动态分析评估值，UE随后通过RRC消息Measurement Report上报给低频主控锚点基站NR BS每个目标候选Beams的RRM测量结果，内容可以包括：UE和每个目标候选Beams实时的“BF粗/细同步子状态”、相关的RRM移动事件评估结果和测量结果。
步骤304：低频主控锚点基站NR BS基于UE上报的结果，获悉UE已经和第一最佳TRP1-Beam2实现下行“BF粗同步子状态”，并且TRP1节点的其他条件满足预设的条件要求，同时还获悉UE已经和第二最佳TRP2-Beam2实现下行“BF细同步子状态”，并且TRP2节点的其他条件满足预设的条件要求，因此决定为被服务UE和高频分流基站NR BS-TRP1/2建立高低频三连接操作，从而按照NR系统规范的三连接操作建立流程，在TRP1-Beam2上建立RL1，在TRP2-Beam2上建立RL2，进行上下行数据分流传输。与此同时，低频主控锚点基站NR BS继续命令UE与TRP1-Beam1 维持在已经处于的下行“BF粗同步子状态”，命令UE与TRP2-Beam1维持在已经处于的下行“BF细同步子状态”。低频主控锚点基站NR BS为UE建立的RL1和RL2都可以处于激活状态，同时进行上下行数据分流传输。
步骤305：高频分流基站NR BS通过Xnew接口，接收到低频主控锚点基站NR BS发来的高低频三连接操作添加请求消息NR BS Addition Request，和激活的目标RL1/激活的目标RL2各自建立相关的配置信息，高频分流基站NR BS能够判断TRP1也已经和被服务UE在Beam1/2实现了上行“BF粗同步子状态”并且相关的上行RRM测量结果良好，高频分流基站NR BS也能够判断TRP2也已经和被服务UE在Beam1/2实现了上行“BF细同步子状态”并且相关的上行RRM测量结果良好，因此高频分流基站NR BS通过Xnew接口，反馈给低频主控锚点基站NR BS消息NR BS Addition Request Ack，同意进行高低频三连接建立操作，并且同意在TRP1-Beam2上建立且激活RL1，在TRP2-Beam2上建立且激活RL2。
步骤306：低频主控锚点基站NR BS通过RRC消息RRC Connection Reconfiguration配置给UE进行高低频紧耦合三连接操作，此后UE可以同时从低频主控锚点基站NR BS-RL和高频分流基站NR BS-TRP1-RL1和TRP2-RL2三条无线链路上进行上下行的用户业务传输数据。随着UE的移动，TRP1-RL1可以在TRP1-Beam2和TRP1-Beam1之间进行无数据传输暂停中断的来回移动切换，TRP2-RL2可以在TRP2-Beam2和TRP2-Beam1之间进行无数据传输暂停中断的来回移动切换。随着UE移动到各大范围之外或者无线环境的变化，低频主控锚点基站NR BS可以重复步骤301至步骤306的流程动作。
图11是根据本申请实施例的一种波束管理装置的结构框图。如图11所示，本实施例的波束管理装置包括：
建立模块112，配置为建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；
切换模块114，配置为在源TRP内的波束发生异常，且在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上；
在本实施例中，通过建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。也就是说，本实施例通过在源TRP内的波束发生异常之前，建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步这种波束管理装置，解决了波束间移动切换时间较大所导致的UE数据吞吐率较低的问题，达到了减少波束间移动切换时间的技术效果。
图12是根据本申请实施例的波束管理装置的示例性结构框图(一)。如图12所示，该装置除了包括图11所示的装置外，还可以包括：
添加模块122，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，额外添加且激活使用目标波束。
通过图12所示的装置，额外添加且激活使用目标波束，使得可以并行传输数据。
图13是根据本申请实施例的波束管理装置的示例性结构框图(二)。如图13所示，该装置除了包括图11所示的装置外，还可以包括：
获取模块132，配置为在建立模块112建立且维护和目标TRP内目标波束之间的空间时频跟踪同步之前，根据RRM测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；
发送模块134，配置为通过RRC上行消息，将该第一最佳波束信息和该第二最佳波束信息发送至主控锚点基站，以使该主控锚点基站对该目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，该第一最佳波束信息和该第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
通过图13所示的装置，获取多个可测量到的最佳目标TRP所辖的多个波束中测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息，并发送至主控锚点基站，进一步实现了波束间的快速移动切换。
图14是根据本申请实施例的波束管理装置的示例性结构框图(三)，如 图14所示，建立模块112可以包括：
第一建立单元142，配置为在该目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，该第二最佳波束处于暂时不被激活使用的状态；或者，
使用第二建立单元等同替换第一建立单元142，其中，第二建立单元配置为在该目标TRP为除源TRP之外的TRP时，建立且维护和该目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，该第一最佳波束处于暂时不被激活使用的状态；或者，
使用第三建立单元等同替换第一建立单元142，其中，第三建立单元配置为在该目标TRP为除源TRP之外的TRP时，建立且维护和该目标TRP内第二最佳波束之间的空间时频跟踪同步，其中，该第二最佳波束处于暂时不被激活使用的状态。
通过图14所示的装置，使得UE能够实现TRP内部的波束间的快速移动切换，或者，TRP之间的波束间的快速移动切换，用户数据传输的暂停中断时间和丢包率将被大大减少。
图15是根据本申请实施例的波束管理装置的示例性结构框图(四)。如图15所示，建立模块112还可以包括：第四建立单元152，配置为在该目标TRP为除源TRP之外的TRP时，建立且维护和分流基站之间去激活的额外RL。
图16是根据本申请实施例的波束管理装置的示例性结构框图(五)。如图16所示，切换模块114可以包括：
第一切换单元162，配置为在该目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从该源TRP的该第一最佳波束切换至该源TRP内的第二最佳波束上；或者，
使用第二切换单元等同替换第一切换单元162，其中，第二切换单元配置为在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从该源TRP的第一最佳波束切换至该目标TRP内的第一最佳波束上；或者，
使用第三切换单元等同替换第一切换单元162，其中，第三切换单元配置为在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从该源TRP的第一最佳波束切换至该目标TRP内的第二最佳波束上。
通过图16所示装置，使得UE可以从该源TRP的该第一最佳波束切换至该源TRP内的第二最佳波束上，或者，从该源TRP的该第一最佳波束切换至该目标TRP内的第一最佳波束上，或者，从该源TRP的该第一最佳波束切换至该目标TRP内的第二最佳波束上，进一步实现了波束间的快速移动切换。
图17是根据本申请实施例的波束管理装置的示例性结构框图(六)。如图17所示，添加模块122可以包括：
第一添加单元172，配置为在该目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的该第一最佳波束不变，添加且激活使用该源TRP内的第二最佳波束；或者，
使用第二添加单元等同替换第一添加单元172，其中，第二添加单元配置为在该目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用该目标TRP内的第一最佳波束和第二最佳波束。
通过图17所示装置，使得可以并行进行数据传输，提高了数据传输的速度。
图18是根据本申请实施例的波束管理装置的示例性结构框图(七)。如图18所示，该装置除了包括图11所示的模块外还可以包括：激活模块182，配置为在从该源TRP的该第一最佳波束切换至或者额外添加该目标TRP内的第一最佳波束，或者从该源TRP的该第一最佳波束切换至或者额外添加该目标TRP内的第二最佳波束时，激活和分流基站之间额外的RL，其中，该RL被提前建立并处于去激活的状态。
图19是根据本申请实施例的波束管理装置的示例性结构框图(八)。如图19所示，该装置除了包括图11所示的模块外还可以包括：维护模块192， 配置为在从该源TRP内的波束切换至该目标TRP内的目标波束上之后，维护该源TRP内的波束，以使该波束处于正常状态。
在示例性实施方式中，上述异常可以包括：分流基站TRP或者终端UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发生失步子状态，RRM信号强度或者质量低于预定阈值。
需要说明的是，上述一个或多个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：由同一处理器实现上述模块；或者，由不同的处理器实现上述模块。
图20是根据本申请实施例的另一波束管理方法的流程图。如图20所示，本实施例提供的波束管理方法，包括如下步骤：
步骤S2002，判断源发送接收点TRP内的波束是否发生异常；
步骤S2004，若源TRP内的波束发生异常，则指示UE从该源TRP内的波束切换至目标TRP内的目标波束上；
步骤S2004，若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则指示UE额外添加且激活使用目标波束；
其中，该目标波束处于已建立且维护空间时频跟踪同步的状态。
在本实施例中，基站在源TRP内的波束发生异常时，指示UE从该源TRP内的波束切换至目标TRP内的目标波束上，在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，指示UE额外添加且激活使用目标波束，其中，该目标波束处于已建立且维护空间时频跟踪同步的状态。如此，解决了波束间移动切换时间较大所导致的UE数据吞吐率较低的问题，达到了减少波束间移动切换时间的技术效果。
图21是根据本申请实施例的另一波束管理装置的结构框图。如图21所示，本实施例的波束管理装置包括：
判断模块2102，配置为判断源发送接收点TRP内的波束是否发生异常；
第一指示模块2104，配置为在源TRP内的波束发生异常时，指示UE从所述源TRP内的波束切换至目标TRP内的目标波束上；
第二指示模块2106，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，指示UE额外添加且激活使用目标波束；
其中，所述目标波束处于已建立且维护空间时频跟踪同步的状态。
通过图21所示的装置，基站在源TRP内的波束发生异常时，指示UE从该源TRP内的波束切换至目标TRP内的目标波束上，在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，指示UE额外添加且激活使用目标波束，其中，该目标波束处于已建立且维护空间时频跟踪同步的状态。如此，解决了波束间移动切换时间较大所导致的UE数据吞吐率较低的问题，达到了减少波束间移动切换时间的技术效果。
本申请实施例还提供了一种计算机可读介质。在本实施例中，上述计算机可读介质可以被设置为存储用于执行以下步骤的程序代码：
S1，建立且维护和目标TRP内多条目标波束之间的空间时频跟踪同步；
S2，若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从该源TRP内的波束切换至该目标TRP内的目标波束上。
在示例性实施方式中，上述计算机可读介质还可以被设置为存储用于执行以下步骤的程序代码：
S3，判断源发送接收点TRP内的波束是否发生异常；
S4，若源TRP内的波束发生异常，则指示UE从该源TRP内的波束切换至目标TRP内的目标波束上；
S5，若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则指示UE额外添加且激活使用目标波束；其中，该目标波束处于已建立且维护空间时频跟踪同步的状态。
在本实施例中，上述计算机可读介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
在本实施例中，处理器可以根据计算机可读介质中已存储的程序代码执行上述步骤S1、S2。
在本实施例中，处理器可以根据计算机可读介质中已存储的程序代码执行上述步骤S3、S4以及S5。
本实施例中的示例可以参考上述实施例及示例性实施方式中所描述的示例，本实施例在此不再赘述。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元(即功能模块和单元中至少之一)可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上所述仅为本申请的示例性实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
工业实用性
本申请实施例提供一种波束管理方法及装置，减少了波束间移动切换时间。

Claims (22)

  1. 一种波束管理方法，包括：
    建立且维护和目标发送接收点TRP内多条目标波束之间的空间时频跟踪同步；
    若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从所述源TRP内的波束切换至所述目标TRP内的目标波束上。
  2. 根据权利要求1所述的方法，所述方法还包括：
    若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则额外添加且激活使用目标波束。
  3. 根据权利要求1所述的方法，在建立且维护和目标TRP内目标波束之间的空间时频跟踪同步之前，所述方法还包括：
    根据无线资源管理RRM测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；
    通过无线资源控制RRC上行消息，将所述第一最佳波束信息和所述第二最佳波束信息发送至主控锚点基站，以使所述主控锚点基站对所述目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，所述第一最佳波束信息和所述第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
  4. 根据权利要求3所述的方法，其中，所述建立且维护和目标TRP内目标波束之间的空间时频跟踪同步包括：
    在所述目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态；或者，
    在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，所述第一最佳波束处于暂时不被激活使用的状态；或者，
    在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP 内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态。
  5. 根据权利要求4所述的方法，所述方法还包括：
    在所述目标TRP为除源TRP之外的TRP时，建立且维护和分流基站之间去激活的额外无线链路RL。
  6. 根据权利要求1所述的方法，其中，所述从所述源TRP内的波束切换至所述目标TRP内的目标波束上包括：
    在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从所述源TRP的所述第一最佳波束切换至所述源TRP内的第二最佳波束上；或者，
    在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第一最佳波束上；或者，
    在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第二最佳波束上。
  7. 根据权利要求2所述的方法，其中，所述额外添加且激活使用目标波束包括：
    在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的所述第一最佳波束不变，添加且激活使用所述源TRP内的第二最佳波束；或者，
    在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用所述目标TRP内的第一最佳波束和第二最佳波束。
  8. 根据权利要求6或7所述的方法，所述方法还包括：在从所述源TRP的所述第一最佳波束快速切换至或者额外添加所述目标TRP内的第一最佳波束，或者从所述源TRP的所述第一最佳波束切换至或者额外添加所述目标 TRP内的第二最佳波束时，激活和分流基站之间额外的无线链路RL，其中，该RL被提前建立并处于去激活的状态。
  9. 根据权利要求1所述的方法，在从所述源TRP内的波束切换至所述目标TRP内的目标波束上之后，所述方法还包括：
    维护所述源TRP内的波束，以使所述波束处于正常状态。
  10. 根据权利要求1至9中任一项所述的方法，其中，所述异常包括：分流基站TRP或者用户设备UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发生失步子状态，无线资源管理RRM信号强度或者质量低于预定阈值。
  11. 一种波束管理方法，包括：
    判断源发送接收点TRP内的波束是否发生异常；
    若源TRP内的波束发生异常，则指示用户设备UE从所述源TRP内的波束切换至目标TRP内的目标波束上；
    若源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件，则指示UE额外添加且激活使用目标波束；
    其中，所述目标波束处于已建立且维护空间时频跟踪同步的状态。
  12. 一种波束管理装置，包括：
    建立模块，配置为建立且维护和目标发送接收点TRP内多条目标波束之间的空间时频跟踪同步；
    切换模块，配置为若源TRP内的波束发生异常，则在接收到主控锚点基站发送的命令之后，从所述源TRP内的波束切换至所述目标TRP内的目标波束上。
  13. 根据权利要求12所述的装置，所述装置还包括：
    添加模块，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，额外添加且激活使用目标波束。
  14. 根据权利要求12所述的装置，所述装置还包括：
    获取模块，配置为在所述建立模块建立且维护和目标TRP内目标波束之间的空间时频跟踪同步之前，根据无线资源管理RRM测量评估模型，获取多个目标TRP内测量结果最佳的第一最佳波束信息和测量结果次佳的第二最佳波束信息；
    发送模块，配置为通过无线资源控制RRC上行消息，将所述第一最佳波束信息和所述第二最佳波束信息发送至主控锚点基站，以使所述主控锚点基站对所述目标TRP内的下行和上行波束进行资源预配置和波束关联创建；其中，所述第一最佳波束信息和所述第二最佳波束信息均包括：TRP所辖服务小区的工作频点带宽、物理逻辑标识、波束的物理逻辑标识和方位特征值。
  15. 根据权利要求14所述的装置，其中，所述建立模块包括：
    第一建立单元，配置为在所述目标TRP为源TRP且待切换或者添加的波束为第一最佳波束时，建立且维护和源TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态；或者，
    第二建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第一最佳波束之间的空间时频跟踪同步，其中，所述第一最佳波束处于暂时不被激活使用的状态；或者，
    第三建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建立且维护和所述目标TRP内第二最佳波束之间的空间时频跟踪同步，其中，所述第二最佳波束处于暂时不被激活使用的状态。
  16. 根据权利要求15所述的装置，其中，所述建立模块还包括：
    第四建立单元，配置为在所述目标TRP为除源TRP之外的TRP时，建立且维护和分流基站之间去激活的额外无线链路RL。
  17. 根据权利要求12所述的装置，其中，所述切换模块包括：
    第一切换单元，配置为在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，从所述源TRP的所述第一最佳波束切换至所述源TRP内的第二最佳波束上；或者，
    第二切换单元，配置为在所述目标TRP为除源TRP之外的TRP时，在 接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第一最佳波束上；或者，
    第三切换单元，配置为在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，从所述源TRP的第一最佳波束切换至所述目标TRP内的第二最佳波束上。
  18. 根据权利要求13所述的装置，其中，所述添加模块包括：
    第一添加单元，配置为在所述目标TRP为源TRP且当前服务的波束为第一最佳波束时，在接收到主控锚点基站发送的命令之后，保持源TRP的所述第一最佳波束不变，添加且激活使用所述源TRP内的第二最佳波束；或者，
    第二添加单元，配置为在所述目标TRP为除源TRP之外的TRP时，在接收到主控锚点基站发送的命令之后，保持源TRP的第一最佳波束和第二最佳波束不变，添加且激活使用所述目标TRP内的第一最佳波束和第二最佳波束。
  19. 根据权利要求17或18所述的装置，所述装置还包括：
    激活模块，配置为在从所述源TRP的所述第一最佳波束切换至或者额外添加所述目标TRP内的第一最佳波束，或者从所述源TRP的所述第一最佳波束切换至或者额外添加所述目标TRP内的第二最佳波束时，激活和分流基站之间额外的无线链路RL，其中，该RL被提前建立并处于去激活的状态。
  20. 根据权利要求12所述的装置，所述装置还包括：
    维护模块，配置为在从所述源TRP内的波束切换至所述目标TRP内的目标波束上之后，维护所述源TRP内的波束，以使所述波束处于正常状态。
  21. 根据权利要求12至20中任一项所述的装置，其中，所述异常包括：分流基站TRP或者用户设备UE用于收发波束的硬件发生故障，当前服务的上下行波束空间或者时频发生失步子状态，无线资源管理RRM信号强度或者质量低于预定阈值。
  22. 一种波束管理装置，包括：
    判断模块，配置为判断源发送接收点TRP内的波束是否发生异常；
    第一指示模块，配置为在源TRP内的波束发生异常时，指示用户设备UE从所述源TRP内的波束切换至目标TRP内的目标波束上；
    第二指示模块，配置为在源TRP内的波束未发生异常且目标TRP内的目标波束满足指定条件时，指示UE额外添加且激活使用目标波束；
    其中，所述目标波束处于已建立且维护空间时频跟踪同步的状态。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021027930A1 (zh) * 2019-08-15 2021-02-18 维沃移动通信有限公司 测量方法、终端设备和网络设备
WO2021256978A1 (en) * 2020-06-15 2021-12-23 Telefonaktiebolaget Lm Ericsson (Publ) Reconfiguration procedure in a wireless communication network
WO2023011731A1 (en) * 2021-08-06 2023-02-09 Nokia Technologies Oy Indication for preamble transmission after beam switch

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2019011201A (es) * 2017-03-24 2019-11-18 Ericsson Telefon Ab L M Mejoras en notificacion de medicion en sistemas a base de haces.
CN111698696B (zh) 2018-03-20 2022-03-01 Oppo广东移动通信有限公司 数据传输方法及装置
CN110418307B (zh) * 2018-04-26 2022-06-28 华为技术有限公司 一种用于无线通信的方法、装置
CN111432422A (zh) * 2019-01-10 2020-07-17 索尼公司 电子装置、无线通信方法和计算机可读介质
CN112020064B (zh) * 2019-05-31 2023-06-23 华为技术有限公司 波束跟踪的方法和装置
CN112637909B (zh) * 2019-09-24 2023-04-07 中国移动通信集团重庆有限公司 锚点网络的智能配置方法及装置
CN113055981A (zh) * 2019-12-26 2021-06-29 索尼公司 无线通信系统中的电子设备、通信方法和存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101401468A (zh) * 2006-03-13 2009-04-01 艾利森电话股份有限公司 用于自适应天线的先进切换
CN103220740A (zh) * 2012-01-20 2013-07-24 电信科学技术研究院 一种小区切换方法及装置
WO2015080645A1 (en) * 2013-11-27 2015-06-04 Telefonaktiebolaget L M Ericsson (Publ) Network node, wireless device, methods therein, computer programs and computer-readable mediums comprising the computer programs, for receiving and sending a report, respectively
US20150257073A1 (en) * 2014-03-10 2015-09-10 Samsung Electronics Co., Ltd. Apparatus and method for determining beam in wireless communication system
WO2015156575A1 (ko) * 2014-04-07 2015-10-15 삼성전자 주식회사 빔포밍 기반 셀룰러 시스템의 상향링크 빔 추적 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101401468A (zh) * 2006-03-13 2009-04-01 艾利森电话股份有限公司 用于自适应天线的先进切换
CN103220740A (zh) * 2012-01-20 2013-07-24 电信科学技术研究院 一种小区切换方法及装置
WO2015080645A1 (en) * 2013-11-27 2015-06-04 Telefonaktiebolaget L M Ericsson (Publ) Network node, wireless device, methods therein, computer programs and computer-readable mediums comprising the computer programs, for receiving and sending a report, respectively
US20150257073A1 (en) * 2014-03-10 2015-09-10 Samsung Electronics Co., Ltd. Apparatus and method for determining beam in wireless communication system
WO2015156575A1 (ko) * 2014-04-07 2015-10-15 삼성전자 주식회사 빔포밍 기반 셀룰러 시스템의 상향링크 빔 추적 방법 및 장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021027930A1 (zh) * 2019-08-15 2021-02-18 维沃移动通信有限公司 测量方法、终端设备和网络设备
WO2021256978A1 (en) * 2020-06-15 2021-12-23 Telefonaktiebolaget Lm Ericsson (Publ) Reconfiguration procedure in a wireless communication network
WO2023011731A1 (en) * 2021-08-06 2023-02-09 Nokia Technologies Oy Indication for preamble transmission after beam switch

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