CN108242948B

CN108242948B - Beam training method, network equipment and terminal

Info

Publication number: CN108242948B
Application number: CN201611213397.8A
Authority: CN
Inventors: 杨宇
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2020-09-08
Anticipated expiration: 2036-12-23
Also published as: CN108242948A

Abstract

The embodiment of the invention provides a beam training method, network equipment and a terminal, wherein the method comprises the following steps: when the terminal is detected to meet the preset periodic wave beam training parameter adjusting condition, adjusting the periodic wave beam training parameter to obtain an adjusted periodic wave beam training parameter; sending the adjusted periodic beam training parameters to a terminal and a sending receiving point TRP which needs to perform beam training with the terminal; performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameter; and receiving a first training result fed back by the terminal. The embodiment of the invention can ensure that the network side and the terminal maintain beam alignment when the high-frequency band large-scale antenna beam forming is carried out and the terminal moving speed is higher.

Description

Beam training method, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a beam training method, a network device, and a terminal.

Background

Radio access technology standards such as Long Term Evolution (LTE), LTE-Advanced (LTE-a) and the like are constructed based on Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM) technology. The MIMO technology utilizes spatial freedom available in a multi-antenna system to improve peak rate and system spectrum utilization.

The dimension of the MIMO technology is continuously expanding in the process of standardization development. In LTE Rel-8, MIMO transmission of up to 4 layers can be supported. In Rel-9, a Multi-User multiple input multiple output (MU-MIMO) technology is enhanced, and at most 4 downlink data layers can be supported in MU-MIMO Transmission of a Transmission Mode (TM) -8. The transmission capability of Single-User multiple-input multiple-output (SU-MIMO) is extended to a maximum of 8 data layers in Rel-10.

The industry is further pushing MIMO technology towards three-dimensionality and large-scale. Currently, 3GPP has completed a research project of 3D channel modeling, and is developing research and standardization work for enhanced full-dimensional MIMO (eFD-MIMO, evolvedFull-Dimension MIMO) and New space-interface MIMO (NR MIMO). It is expected that in future 5G mobile communication systems, a larger scale, more antenna port MIMO technology will be introduced.

The large-scale (Massive) MIMO technology uses a large-scale antenna array, can greatly improve the utilization efficiency of a system frequency band, and supports a larger number of access users. Therefore, the massive MIMO technology is considered by various research organizations as one of the most potential physical layer technologies in the next generation mobile communication system.

If a full digital array is adopted in the Massive MIMO technology, the maximum spatial resolution and the optimal MU-MIMO performance can be achieved, but such a structure requires a large number of analog-to-digital/digital-to-analog (AD/DA) conversion devices and a large number of complete rf-baseband processing channels, which is a huge burden in terms of both equipment cost and baseband processing complexity.

In order to avoid the implementation cost and the equipment complexity, a digital-analog hybrid beamforming technology is developed, that is, on the basis of the conventional digital domain beamforming, a primary beamforming is added to a radio frequency signal near the front end of an antenna system. Analog forming enables a sending signal to be roughly matched with a channel in a simpler mode. The dimension of the equivalent channel formed after analog shaping is smaller than the actual number of antennas, so that the AD/DA conversion devices, the number of digital channels and the corresponding baseband processing complexity required thereafter can be greatly reduced. The residual interference of the analog forming part can be processed once again in the digital domain, thereby ensuring the quality of MU-MIMO transmission. Compared with full digital forming, digital-analog hybrid beam forming is a compromise scheme of performance and complexity, and has a high practical prospect in a system with a high frequency band and a large bandwidth or a large number of antennas.

In the research of the next generation communication system after 4G, the working frequency band supported by the system is increased to more than 6GHz and reaches up to about 100 GHz. The high frequency band has richer idle frequency resources, and can provide higher throughput for data transmission. At present, 3GPP has completed high-frequency channel modeling work, the wavelength of a high-frequency signal is short, and compared with a low-frequency band, more antenna array elements can be arranged on a panel with the same size, and a beam with stronger directivity and narrower lobes is formed by using a beam forming technology. Therefore, the combination of a large-scale antenna and high-frequency communication is one of the trends in the future.

But the high frequency beams of massive antennas are narrow, requiring the use of beam training techniques to align the transmit and receive beams of the network side and the terminal (UE). If the UE moves faster, the beam training may not be able to track the changes quickly, so that the beams of the network side and the UE may not be aligned, which may cause link interruption, service transmission failure, and affect user experience.

Disclosure of Invention

The embodiment of the invention provides a beam training method, network equipment and a terminal, and aims to solve the problem that a network side cannot maintain beam alignment with the terminal when high-frequency-band large-scale antenna beam forming is performed and the terminal moving speed is high.

In a first aspect, an embodiment of the present invention provides a beam training method, applied to a network device, where the method includes:

when the terminal is detected to meet the preset periodic wave beam training parameter adjusting condition, adjusting the periodic wave beam training parameter to obtain an adjusted periodic wave beam training parameter;

sending the adjusted periodic beam training parameters to a terminal and a sending receiving point TRP which needs to perform beam training with the terminal;

performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameter;

and receiving a first training result fed back by the terminal.

In a second aspect, an embodiment of the present invention further provides a network device, where the network device includes:

the adjusting module is used for adjusting the periodic wave beam training parameters to obtain adjusted periodic wave beam training parameters when the terminal is detected to meet the preset periodic wave beam training parameter adjusting conditions;

the first sending module is used for sending the adjusted periodic beam training parameters to the terminal and sending receiving points TRP which need to perform beam training with the terminal;

the first training module is used for carrying out beam training with the terminal through the TRP according to the adjusted periodic beam training parameters;

and the first receiving module is used for receiving a first training result fed back by the terminal.

In a third aspect, an embodiment of the present invention further provides a beam training method applied to a terminal, where the method includes:

receiving adjusted periodic wave beam training parameters sent by network equipment;

performing beam training with a sending receiving point TRP which needs to perform beam training with a terminal according to the adjusted periodic beam training parameter;

and feeding back the first training result to the network equipment.

In a fourth aspect, an embodiment of the present invention further provides a terminal, where the terminal includes:

the third receiving module is used for receiving the adjusted periodic beam training parameters sent by the network equipment;

the third training module is used for carrying out beam training with a sending receiving point TRP which needs to carry out beam training with the terminal according to the adjusted periodic beam training parameter;

and the first feedback module is used for feeding back the first training result to the network equipment.

Thus, in the embodiment of the present invention, when it is detected that the terminal satisfies the preset periodic beam training parameter adjustment condition, the periodic beam training parameter is adjusted to obtain an adjusted periodic beam training parameter, the adjusted periodic beam training parameter is sent to the terminal and a sending and receiving point that needs to perform beam training with the terminal, then, the sending and receiving point performs beam training with the terminal according to the adjusted periodic beam training parameter, and receives a first training result fed back by the terminal, so that the network side can maintain beam alignment with the terminal when the high-frequency-band large-scale antenna beam forming is performed and the terminal moves faster.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a flow chart of a beam training method according to a first embodiment of the present invention;

FIG. 2 is a flow chart of a beam training method according to a second embodiment of the present invention;

fig. 3 is a diagram illustrating a terminal and a TRP according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating a beam training period and a training beam number according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a network device according to a third embodiment of the present invention;

fig. 6 is a second schematic structural diagram of a network device according to a third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a network device according to a fourth embodiment of the present invention;

FIG. 8 is a flow chart of a beam training method according to a fifth embodiment of the present invention;

fig. 9 is one of the schematic structural diagrams of a terminal according to a sixth embodiment of the present invention;

fig. 10 is a second schematic structural diagram of a terminal according to a sixth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal in a seventh embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment

As shown in fig. 1, a first embodiment of the present invention provides a beam training method applied to a network device, where the method includes:

step 101, when it is detected that the terminal meets a preset periodic beam training parameter adjustment condition, adjusting the periodic beam training parameter to obtain an adjusted periodic beam training parameter.

Wherein the adjusted periodic beam training parameters include: training beam index offset, beam training period, and Transmission spatial angle interval of two adjacent training signals during training for each Transmission Receiving Point (TRP). It should be noted that the TRP mentioned above refers to a base station or a transceiver node of a cell, and the transceiver node may have different names in different communication technology standards, and is denoted by the abbreviation TRP in the embodiment of the present invention.

And 102, sending the adjusted periodic beam training parameters to the terminal and a sending and receiving point which needs to perform beam training with the terminal.

Wherein, the TRP required to perform beam training with the terminal includes: all TRPs in a first TRP group where a terminal belongs to a service TRP, and all TRPs in a second TRP group adjacent to the first TRP group.

In the first embodiment of the present invention, when the terminal moves, since the terminal is likely to move to the second TRP group adjacent to the first TRP group, in order to ensure that the beam alignment between the network side and the terminal can be accurately and correctly completed subsequently, the network device needs to simultaneously send the adjusted periodic beam training parameters to all the TRPs in the first TRP group and the second TRP group when sending the adjusted periodic beam training parameters to the terminal.

And 103, performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameters.

The TRP beam-trained with the terminal in step 103 is a TRP that requires beam training with the terminal.

And 104, receiving a first training result fed back by the terminal.

Wherein the first training result comprises: the beam index corresponding to the beam selected by the terminal, the received power of the downlink beam training signal corresponding to the beam selected by the terminal, and the like. Wherein the downlink beam training signal is transmitted by a TRP performing beam training with the terminal. Obviously, after receiving the first training result fed back by the terminal, the network device can maintain beam alignment with the terminal. The network device may be a base station, a core network control node, and the like.

In the embodiment of the present invention, it should be noted that, in the connected state, initial beam alignment is implemented between the TRP and the UE through beam training, and service is transmitted in the aligned beam. The TRP and UE maintain an optimal number of beam pairs (which refers to transmit and receive beams for a certain link direction). The initial beam alignment means that the UE is started to access the network to realize synchronization, and beam alignment is realized through beam training after random access. And the beam training between the TRP and the UE may adopt the same period, and the period may notify the UE through a system broadcast message, or Radio Resource Control (RRC) signaling, or physical layer signaling. At the same periodic time, a plurality of TRPs all send downlink beam training signals, and the UE detects the downlink beam training signals by using different receiving beams, and searches and determines the optimal downlink transmitting beam and the optimal downlink receiving beam. The uplink is similar, that is, the UE sends an uplink beam training signal, and multiple TRPs all use different respective receive beams to detect the uplink beam training signal at the same periodic time, and find and determine an optimal uplink transmit beam and an uplink receive beam. And the TRP or the UE feeds back the optimal transmitting beam from the opposite end to the opposite end. The feedback of the optimal transmission beam from the peer end to the peer end refers to the feedback of an index of the optimal transmission beam, i.e., a transmission beam index (Tx beam index). Here, the Tx beam index may predefine a mapping relationship with physical resources used by a transmission beam (Tx beam) or with training signal sequences orthogonal to each other or with antenna ports in advance. Of course, the predefined mapping relationship may be pre-agreed in the protocol, or pre-configured by higher layer signaling, or notified by physical layer signaling. So that the network side and the UE side have consistent understanding of the predefined mapping relationship. In the process of feeding back the optimal transmission beam from the opposite terminal to the opposite terminal, the index of the optimal transmission beam can be obtained according to the detected physical resource, training signal sequence, antenna port and the like of the optimal transmission beam and the predefined mapping relation, and the index is fed back to the opposite terminal.

Therefore, in the first embodiment of the present invention, when it is detected that the terminal satisfies the preset periodic beam training parameter adjustment condition (it may be detected that the terminal satisfies the preset periodic beam training parameter adjustment condition when the moving speed of the terminal is high), the periodic beam training parameter is adjusted to obtain the adjusted periodic beam training parameter, the adjusted periodic beam training parameter is sent to the terminal and a sending and receiving point that needs to perform beam training with the terminal, then, the sending and receiving point performs beam training with the terminal according to the adjusted periodic beam training parameter, and receives the first training result fed back by the terminal, so that when the high-frequency-band large-scale antenna beam forming is performed and the moving speed of the terminal is high, the network side can maintain beam alignment with the terminal, and ensure service transmission of the user.

Second embodiment

As shown in fig. 2, a second embodiment of the present invention provides a beam training method applied to a network device, where the method includes:

step 201, when it is detected that the terminal meets a preset periodic beam training parameter adjustment condition, adjusting the periodic beam training parameter to obtain an adjusted periodic beam training parameter.

Wherein the adjusted periodic beam training parameters include: training beam index offset, beam training period, and transmission spatial angle interval of two adjacent training signals of each TRP during training period.

Step 202, the adjusted periodic beam training parameters are sent to the terminal and the sending and receiving points which need to perform beam training with the terminal.

Wherein, the TRP required to perform beam training with the terminal includes: all TRPs in a first TRP group where a terminal belongs to a service TRP, and all TRPs in a second TRP group adjacent to the first TRP group. For easy understanding, the meaning of the TRP group is briefly explained herein, on the network side, a plurality of adjacent TRPs are set as a group or a cluster centering on the serving TRP of the serving cell of a current UE, and therefore, a group of TRPs includes the TRPs corresponding to the optimal several beam pairs maintained by the current UE. For example, currently, several beam pairs respectively correspond to 3 TRPs, as shown in fig. 3, and then the corresponding TRP group includes the 3 TRPs (e.g., TRP1, TRP2 and TRP3 in fig. 3). And the TRP group may be notified of TRPs within the group by a serving TRP or a base station. Wherein, the ellipse around the TRP in fig. 3 represents the beam corresponding to the TRP, and the scattered TRPs outside the TRP group (TRP 4, TRP5, TRP6, TRP7 in fig. 3) are the TRPs adjacent to the TRP group.

Here, when transmitting the adjusted periodic beam training parameter to the TRPs other than the service TRP in the first TRP group, if an interface exists between the TRPs, the adjusted periodic beam training parameter may be transmitted from the service TRP to which the terminal belongs to the TRP other than the service TRP in the first TRP group through the inter-TRP interface, and of course, if an interface does not exist between the TRPs, the adjusted periodic beam training parameter may be transmitted only through the network device (e.g., the base station, the core network control node, etc.). In addition, the network device may send the adjusted periodic beam training parameter to the terminal through a physical layer control signaling.

And step 203, performing beam training with the terminal according to the adjusted periodic beam training parameter through the TRP.

The TRP beam-trained with the terminal in step 203 is a TRP that requires beam training with the terminal.

And step 204, receiving a first training result fed back by the terminal.

Wherein the first training result comprises: the beam index corresponding to the beam selected by the terminal, the received power of the downlink beam training signal corresponding to the beam selected by the terminal, and the like. It should be noted that, after receiving the first training result, the network device can update the optimal plurality of beam pairs maintained by the terminal according to the first training result, and replace the original optimal beam pair.

Step 205, the service TRP to which the terminal belongs is updated to the TRP corresponding to the maximum received power in the first training result.

The updated serving TRP may be the previous serving TRP, that is, the updated serving TRP corresponds to the serving TRP that has not been changed.

And step 206, using the updated service TRP and a plurality of TRPs adjacent to the updated service TRP as a third TRP group.

The TRP in the third TRP group may be the same as or different from the TRP in the first TRP group, and this depends mainly on whether the TRP corresponding to the updated optimal beam pair changes after the terminal moves.

In the second embodiment of the present invention, after the step 206 is executed, the method further includes the following steps: transmitting a message for notifying that the TRP belongs to the third TRP group to each of a plurality of TRPs (the plurality of TRPs in step 206). That is, all TRPs in the third TRP group are notified to belong to the third TRP group, so as to ensure that the subsequent network side can perform effective beam training with the terminal. Of course, the third TRP group includes TRPs corresponding to the updated optimal beam pair.

In addition, after the step 206 is executed, the method further includes the following steps: and sending a message for informing that the TRP does not belong to the first TRP group to all TRPs in the first TRP group. That is, all TRPs within the first TRP group are notified that they no longer belong to the first TRP group, so as to reduce the overhead of subsequent beam training.

When a message for notifying that the TRP belongs to the third TRP group or a message for notifying that the TRP does not belong to the first TRP group is transmitted, if an interface exists between the TRPs, the message for notifying that the TRP belongs to the third TRP group and the message for notifying that the TRP does not belong to the first TRP group may be transmitted by the updated serving TRP through the inter-TRP interface, and of course, if an interface does not exist between the TRPs, the messages may be transmitted only through the network device.

In a second embodiment of the present invention, a specific implementation manner of detecting that the terminal satisfies the preset periodic beam training parameter adjustment condition in step 201 includes the following steps:

the method comprises the steps of firstly, when the terminal is detected to meet a preset aperiodic beam training triggering condition, calculating a first statistical value of a time interval of every two adjacent times of detection that the terminal meets the preset aperiodic beam training triggering condition in a preset time period containing the current moment. That is, it is equivalent to calculating the time interval of the last several times when the terminal is detected to satisfy the preset aperiodic beam training triggering condition (the time interval means that the terminal is detected to satisfy the preset aperiodic beam training triggering condition every two adjacent times)Time interval of aperiodic beam training trigger condition). As one example, the first statistical value may be an average or a weighted average. Specifically, it is assumed that the first statistical value may be an average value, and includes k time intervals, t being t respectively, existing in a preset time period of the current time₁、t₂…t_kThen the first statistical value is (t)₁+t₂+…+t_k) K, where k represents the number of time intervals and k is 1 or an integer greater than or equal to 1, t₁Representing a first time interval, t₂Representing a second time interval, t_kRepresenting the kth time interval.

And secondly, if the first statistical value belongs to a first threshold range in threshold ranges of a plurality of preset trigger wave beam training period changes and the first threshold range is different from a second threshold range to which the second statistical value belongs, determining that the terminal meets a preset period wave beam training parameter adjusting condition.

The second threshold range is one of the threshold ranges, and the second statistical value is a first statistical value calculated when the terminal is detected to meet the preset aperiodic beam training triggering condition last time.

It can be seen that, in the second embodiment of the present invention, when it is frequently detected that the terminal meets the preset aperiodic beam training triggering condition, it is very likely that it is determined that the terminal meets the preset periodic beam training parameter adjustment condition, that is, it is very likely that the network device is triggered to adjust the periodic beam training parameter.

In this case, after the first statistical value is calculated in the first step, the method further includes: and if the first statistical value is smaller than the minimum value in the plurality of threshold ranges, transmitting traffic to the terminal by using a wide beam through a service TRP (the service TRP is the service TRP to which the terminal currently belongs), or simultaneously transmitting traffic to the terminal by using a plurality of narrow beams through the service TRP (the service TRP is the service TRP to which the terminal currently belongs). Because if the first statistical value is smaller than the minimum value in the plurality of threshold ranges, it indicates that the moving speed of the terminal is high enough to require quite frequent beam training. In order to reduce the overhead of beam training and avoid the beam being unable to track the high-speed terminal, the wide beam or multiple narrow beams may be used to transmit traffic to the terminal simultaneously through the service TRP.

In a second embodiment of the present invention, a specific implementation manner of detecting that the terminal satisfies the preset aperiodic beam training triggering condition in the first step is as follows: if the quality of the received uplink signal or the quality of a channel (the channel can be an uplink channel) is detected to be abnormal, determining that the detected terminal meets a preset aperiodic beam training triggering condition; or, if a message sent by the terminal for notifying the network device that the aperiodic beam training needs to be performed with the terminal is received, it is determined that the terminal meets a preset aperiodic beam training triggering condition. When detecting that the quality of a downlink signal received by the terminal or the quality of a channel (which may be a downlink channel) is abnormal, or when detecting that the moving speed of the terminal is increased (for example, the terminal a in fig. 3, where a dotted arrow in fig. 3 indicates the moving direction of the terminal a), the terminal sends, to the network device, a message for notifying the network device that aperiodic beam training needs to be performed with the terminal. The quality of the uplink signal quality, the downlink signal quality and the channel quality may be power, signal-to-noise ratio, a carried channel data check result, and the like. The Uplink signal may specifically be an Acknowledgement (ACK)/Negative Acknowledgement (NACK), and the Uplink Channel may specifically be a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), or the like.

In a second embodiment of the present invention, when it is detected that the terminal satisfies a preset aperiodic beam training triggering condition, the method further includes the following steps: and performing aperiodic beam training with the terminal through all TRPs in the first TRP group, and receiving a second training result fed back by the terminal (the second training result should include a beam index corresponding to the beam selected by the terminal, the received power of a downlink beam training signal corresponding to the beam selected by the terminal, and the like). That is, when it is detected that the terminal satisfies the preset aperiodic beam training trigger condition, one-time beam correction (i.e., the aperiodic beam training) is performed. The specific procedure of the aperiodic beam training is the same as that of the ordinary periodic beam training, except that it is aperiodic and disposable. The specific process of the aperiodic beam training comprises the following steps: and transmitting aperiodic beam training signals through all TRPs in the first TRP group, and then detecting the beam training signals and feeding back a second training result by the terminal, thereby realizing beam correction and achieving the effects of preventing link interruption, service transmission failure and influencing user experience as much as possible.

In a second embodiment of the present invention, a specific implementation manner of adjusting the periodic beam training parameter in step 201 to obtain an adjusted periodic beam training parameter includes the following steps:

firstly, if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, adjusting at least one preset parameter in the periodic beam training parameters according to a first preset adjustment rule to obtain adjusted periodic beam training parameters. It should be noted that, if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, it indicates that the channel change is severe due to the increase of the moving speed of the terminal at present, a smaller beam training period needs to be selected as a new beam training period, and the transmission spatial angle interval of two adjacent training signals of each TRP in the training period may be increased, or the training beam index offset may be increased.

The preset parameter may be a beam training period, a transmission spatial angle interval of two adjacent training signals of each TRP during training, a training beam index offset, and the like.

And secondly, if the minimum value of the first threshold range is larger than the maximum value of the second threshold range, adjusting the preset parameters according to a second preset adjustment rule to obtain the adjusted periodic wave beam training parameters. It should be noted that, if the minimum value of the first threshold range is greater than the maximum value of the second threshold range, it indicates that the channel change is slow due to the decrease of the moving speed of the terminal, a larger beam training period needs to be selected as a new beam training period, and the transmission spatial angle interval of two adjacent training signals of each TRP in the training period can be reduced, or the training beam index offset can be reduced.

The adjusting direction of the second preset adjusting rule for adjusting the preset parameters is opposite to the adjusting direction of the first preset adjusting rule for adjusting the preset parameters. And the adjusting direction of the first preset adjusting rule for adjusting the preset parameters is to increase the value of the preset parameters or decrease the value of the preset parameters. It should be noted that the preset parameter in the second step is the preset parameter in the first step, for example, if the preset parameter in the first step is the beam training period, the preset parameter in the second step is also the beam training period.

It should be further explained that there is no strict sequence between the first step and the second step in the specific implementation manner of adjusting the periodic beam training parameter to obtain the adjusted periodic beam training parameter.

To facilitate a further understanding of the processes performed on the periodic beam training parameters, the processes performed on the periodic beam training parameters are described in detail herein.

Specifically, if the preset parameter is the beam training period, the adjustment direction of the first preset adjustment rule for adjusting the preset parameter is to reduce the value of the preset parameter. Correspondingly, the step of adjusting at least one preset parameter in the periodic beam training parameters according to the first preset adjustment rule to obtain the adjusted periodic beam training parameters includes: and determining the value of the beam training period corresponding to the first threshold range according to the prestored value corresponding relation between the threshold range for triggering the beam training period change and the beam training period, and taking the determined value as the value of the beam training period in the adjusted periodic beam training parameter. And the value of the beam training period corresponding to the first threshold range is smaller than the value of the beam training period corresponding to the second threshold range. Here, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is opposite to the adjustment direction of the first preset adjustment rule for adjusting the preset parameter. Therefore, if the preset parameter is the beam training period, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is to increase the value of the preset parameter. Correspondingly, the step of adjusting the preset parameter according to the second preset adjustment rule to obtain the adjusted periodic beam training parameter includes: and determining the value of the beam training period corresponding to the first threshold range according to the prestored value corresponding relation between the threshold range for triggering the beam training period change and the beam training period, and taking the determined value as the value of the beam training period in the adjusted periodic beam training parameter. And the value of the beam training period corresponding to the first threshold range is larger than the value of the beam training period corresponding to the second threshold range.

It should be noted that, in the pre-stored corresponding relationship between the threshold range triggering the change of the beam training period and the values of the beam training period, the values of different beam training periods may be in a multiple relationship, so that when the high-speed UE performs the beam training in a certain smaller period, other low-speed UEs may still perform the beam training in a larger period.

Similarly, if the preset parameter is the transmission space angle interval of two adjacent training signals of each TRP during the training period, the adjustment direction of the first preset adjustment rule to adjust the preset parameter is to increase the value of the preset parameter. Correspondingly, the step of adjusting at least one preset parameter in the periodic beam training parameters according to the first preset adjustment rule to obtain the adjusted periodic beam training parameters includes: and determining the value of the transmission space angle interval of the two adjacent training signals of each TRP in the training period corresponding to the first threshold range according to the pre-stored value corresponding relation between the threshold range triggering the beam training period change and the transmission space angle interval of the two adjacent training signals of each TRP in the training period, and taking the determined value as the value of the transmission space angle interval of the two adjacent training signals of each TRP in the adjusted periodic beam training parameter in the training period. And the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is larger than that of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period. Here, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is opposite to the adjustment direction of the first preset adjustment rule for adjusting the preset parameter. Therefore, if the preset parameter is the transmission space angle interval of two adjacent training signals of each TRP during the training period, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is to reduce the value of the preset parameter. Correspondingly, the step of adjusting the preset parameter according to the second preset adjustment rule to obtain the adjusted periodic beam training parameter includes: and determining the value of the transmission space angle interval of the two adjacent training signals of each TRP in the training period corresponding to the first threshold range according to the pre-stored value corresponding relation between the threshold range triggering the beam training period change and the transmission space angle interval of the two adjacent training signals of each TRP in the training period, and taking the determined value as the value of the transmission space angle interval of the two adjacent training signals of each TRP in the adjusted periodic beam training parameter in the training period. And the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is smaller than the value of the transmission space angle interval of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period.

Similarly, if the preset parameter is the training beam index offset, the adjustment direction of the first preset adjustment rule for adjusting the preset parameter is to increase the value of the preset parameter. Correspondingly, the step of adjusting at least one preset parameter in the periodic beam training parameters according to the first preset adjustment rule to obtain the adjusted periodic beam training parameters includes: and determining the value of the training beam index offset corresponding to the first threshold range according to the pre-stored corresponding relation between the threshold range triggering the beam training period change and the value of the training beam index offset, and taking the determined value as the value of the training beam index offset in the adjusted periodic beam training parameter. And the value of the training beam index offset corresponding to the first threshold range is larger than the value of the training beam index offset corresponding to the second threshold range. Here, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is opposite to the adjustment direction of the first preset adjustment rule for adjusting the preset parameter. Therefore, if the preset parameter is the training beam index offset, the adjustment direction of the second preset adjustment rule for adjusting the preset parameter is to reduce the value of the preset parameter. Correspondingly, the step of adjusting the preset parameter according to the second preset adjustment rule to obtain the adjusted periodic beam training parameter includes: and determining the value of the training beam index offset corresponding to the first threshold range according to the pre-stored corresponding relation between the threshold range triggering the beam training period change and the value of the training beam index offset, and taking the determined value as the value of the training beam index offset in the adjusted periodic beam training parameter. And the value of the training beam index offset corresponding to the first threshold range is smaller than the value of the training beam index offset corresponding to the second threshold range.

Here, the adjustment of the periodic beam training parameters is described as an embodiment. In this example, assume that the beam index (beam index) of the beam used for transmission between the original serving TRP and the UE is ID0, and the value of the training beam index offset is offset. The training beam is numbered … … ID0-2 × offset, ID0-offset, ID0, ID0+ offset, ID0+2 × offset … …; alternatively, ID0+ N × offset, N0/1/2 … …. For example, when the UE moves at a low speed, the ID0 of the beam index of the currently transmitted beam is 1. The beam training is performed according to the original beam training period and offset of 1. That is, as shown in fig. 4, the training beam number at this time (i.e., at the time of the original beam training period) is 1/2/3 … …, i.e., beam1, beam2, and beam3, in this order. When the UE moving speed increases and the period beam training parameters are updated in the TRP group, the beam training period is shortened, that is, the spatial angle interval for transmitting the training signal is increased at the same time when the TRP is trained in each new beam training period, and when the offset is 2. Then, the beam training at this time (i.e., when in the new beam training period) will be performed according to the shortened new beam training period, and the transmission training beam numbers will be 1/3/… …, i.e., beam1 and beam3 …, in that order. It should be noted that the above calculation formula is only an example, and it is not excluded that other formulas are used to calculate the new training beam number according to the original beam index, offset, and the like.

It can be seen that, in the second embodiment of the present invention, when it is detected that the terminal satisfies the preset periodic beam training parameter adjustment condition (which may be detected that the terminal satisfies the preset periodic beam training parameter adjustment condition when the moving speed of the terminal is large), adjusting the periodic wave beam training parameter to obtain an adjusted periodic wave beam training parameter, sending the adjusted periodic wave beam training parameter to a terminal and a sending and receiving point which needs to carry out wave beam training with the terminal, carrying out wave beam training with the terminal according to the adjusted periodic wave beam training parameter through the sending and receiving point, receiving a first training result fed back by the terminal, updating a TRP group according to the first training result, therefore, when the high-frequency-band large-scale antenna beam forming is carried out and the terminal moving speed is high, the network side and the terminal can maintain beam alignment, and service transmission of users is guaranteed.

Third embodiment

The first to second embodiments above describe the beam training method in different scenarios in detail, and the network devices corresponding to the beam training methods will be further described with reference to fig. 5 and 6.

As shown in fig. 5 to 6, a third embodiment of the present invention provides a network device 500 including:

an adjusting module 501, configured to adjust the periodic beam training parameter to obtain an adjusted periodic beam training parameter when it is detected that the terminal meets a preset periodic beam training parameter adjusting condition;

a first sending module 502, configured to send the adjusted periodic beam training parameter to a terminal and a sending receiving point TRP that needs to perform beam training with the terminal;

a first training module 503, configured to perform beam training with the terminal according to the adjusted periodic beam training parameter through the TRP;

a first receiving module 504, configured to receive a first training result fed back by the terminal.

Alternatively, the TRP comprises: all TRPs in a first TRP group where a terminal belongs to a service TRP, and all TRPs in a second TRP group adjacent to the first TRP group.

Optionally, the adjusting module 501 includes:

the first detection submodule 5011 is configured to calculate a first statistical value of a time interval, in a preset time period including a current time, between every two adjacent times of detection that the terminal meets a preset aperiodic beam training triggering condition when the terminal is detected to meet the preset aperiodic beam training triggering condition;

the second detection submodule 5012 is configured to determine that the detected terminal meets the preset periodic beam training parameter adjustment condition if the first statistical value belongs to a first threshold range in threshold ranges of the preset multiple trigger beam training period changes and the first threshold range is different from a second threshold range to which the second statistical value belongs;

Optionally, the first detection submodule 5011 includes:

the first detecting unit 50111 is configured to determine that the detected terminal meets a preset aperiodic beam training triggering condition if it is detected that the quality of the received uplink signal or the quality of the channel is abnormal; or

The second detecting unit 50112 is configured to determine that the terminal meets a preset aperiodic beam training triggering condition if receiving a message sent by the terminal and used to notify the network device that aperiodic beam training needs to be performed with the terminal.

Optionally, the adjusting module 501 includes:

the first adjusting submodule 5013 is configured to, if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, adjust at least one preset parameter of the periodic beam training parameters according to a first preset adjustment rule, to obtain an adjusted periodic beam training parameter;

the second adjusting submodule 5014 is configured to, if the minimum value of the first threshold range is greater than the maximum value of the second threshold range, adjust the preset parameter according to a second preset adjustment rule to obtain an adjusted periodic beam training parameter;

the adjusting direction of the second preset adjusting rule for adjusting the preset parameter is opposite to the adjusting direction of the first preset adjusting rule for adjusting the preset parameter, and the adjusting direction of the first preset adjusting rule for adjusting the preset parameter is to increase the value of the preset parameter or decrease the value of the preset parameter.

Optionally, if the preset parameter is the beam training period, the adjusting direction of the first preset adjusting rule for adjusting the preset parameter is to reduce the value of the preset parameter,

the first adjustment submodule 5013 includes:

the first adjusting unit 50131 is configured to determine, according to a pre-stored value corresponding relationship between a threshold range triggering a change of a beam training period and the beam training period, a value of the beam training period corresponding to the first threshold range; the value of the beam training period corresponding to the first threshold range is smaller than the value of the beam training period corresponding to the second threshold range;

the second adjusting unit 50132 is configured to use the determined value as a value of a beam training period in the adjusted periodic beam training parameter.

Optionally, if the preset parameter is the transmission space angle interval of two adjacent training signals of each TRP during the training period, the adjustment direction of the first preset adjustment rule to adjust the preset parameter is to increase the value of the preset parameter,

the first adjustment submodule 5013 includes:

a third adjusting unit 50133, configured to determine, according to a pre-stored value corresponding relationship between a threshold range triggering a beam training period change and a transmission space angle interval of two adjacent training signals of each TRP during a training period, a value of the transmission space angle interval of the two adjacent training signals of each TRP during the training period, where the value corresponds to the first threshold range; the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is larger than that of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period;

a fourth adjusting unit 50134, configured to use the determined value as a value of a transmission spatial angle interval of two adjacent training signals during the training period of each TRP in the adjusted periodic beam training parameter.

Optionally, if the preset parameter is the training beam index offset, the adjusting direction of the first preset adjusting rule for adjusting the preset parameter is to increase the value of the preset parameter,

the first adjustment submodule 5013 includes:

the fifth adjusting unit 50135 is configured to determine, according to a pre-stored value correspondence between a threshold range triggering a change of a beam training period and a training beam index offset, a value of the training beam index offset corresponding to the first threshold range; the value of the training beam index offset corresponding to the first threshold range is larger than the value of the training beam index offset corresponding to the second threshold range;

the sixth adjusting unit 50136 is configured to use the determined value as a value of a training beam index offset in the adjusted periodic beam training parameter.

Optionally, the network device further includes:

a transmission module 505, configured to transmit traffic to the terminal using the wide beam through the service TRP or simultaneously transmit traffic to the terminal using the multiple narrow beams through the service TRP if the first statistical value is smaller than a minimum value in the multiple threshold ranges.

Optionally, the network device further includes:

a second training module 506, configured to perform aperiodic beam training with the terminal through all TRPs in the first TRP group;

the second receiving module 507 is configured to receive a second training result fed back by the terminal.

Optionally, the first training result includes: a beam index corresponding to the beam selected by the terminal, and the received power of the downlink beam training signal corresponding to the beam selected by the terminal,

the network device further includes:

an updating module 508, configured to update the service TRP to which the terminal belongs to the TRP corresponding to the maximum received power in the first training result;

a setting module 509, configured to use the updated service TRP and the plurality of TRPs adjacent to the updated service TRP as a third TRP group.

Optionally, the network device further includes:

a second transmitting module 510, configured to transmit, to each of the plurality of TRPs, a message for notifying that the TRP belongs to a third TRP group.

Optionally, the network device further includes:

a third sending module 511, configured to send a message for notifying that the TRP does not belong to the first TRP group to all TRPs in the first TRP group.

In the third embodiment of the present invention, when detecting that the terminal meets the preset periodic beam training parameter adjustment condition, the network device 500 adjusts the periodic beam training parameter to obtain an adjusted periodic beam training parameter, sends the adjusted periodic beam training parameter to the terminal and a sending and receiving point that needs to perform beam training with the terminal, then performs beam training with the terminal according to the adjusted periodic beam training parameter through the sending and receiving point, and receives a first training result fed back by the terminal, so that when the high-frequency-band large-scale antenna beam forming is performed and the terminal moving speed is high, the network side can maintain beam alignment with the terminal, and ensure service transmission of the user.

Fourth embodiment

In order to better achieve the above object, as shown in fig. 7, a fourth embodiment of the present invention further provides a network device, including: a processor 700; a memory 720 connected to the processor 700 through a bus interface, and a transceiver 710 connected to the processor 700 through a bus interface; the memory 720 is used for storing programs and data used by the processor in performing operations; transmitting data information or pilot frequency through the transceiver 710, and receiving an uplink control channel through the transceiver 710; when the processor 700 calls and executes the program and data stored in the memory 720, specifically, when it is detected that the terminal meets the preset periodic beam training parameter adjustment condition, adjusting the periodic beam training parameter to obtain an adjusted periodic beam training parameter; sending the adjusted periodic beam training parameters to a terminal and a sending receiving point TRP which needs to perform beam training with the terminal; performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameter; and receiving a first training result fed back by the terminal.

Optionally, all TRPs in a first TRP group where the terminal belongs to the service TRP, and all TRPs in a second TRP group adjacent to the first TRP group.

Optionally, the processor 700 is further configured to: when the terminal is detected to meet the preset aperiodic beam training triggering condition, calculating a first statistical value of a time interval of every two adjacent times of detection that the terminal meets the preset aperiodic beam training triggering condition in a preset time period containing the current moment; if the first statistical value belongs to a first threshold range in threshold ranges of a plurality of preset trigger wave beam training period changes and the first threshold range is different from a second threshold range to which the second statistical value belongs, determining that the terminal meets a preset period wave beam training parameter adjusting condition; the second threshold range is one of the threshold ranges, and the second statistical value is a first statistical value calculated when the terminal is detected to meet the preset aperiodic beam training triggering condition last time.

Optionally, the processor 700 is further configured to: if the quality of the received uplink signal or the channel quality is detected to be abnormal, determining that the detected terminal meets a preset aperiodic beam training triggering condition; or, if a message sent by the terminal for notifying the network device that the aperiodic beam training needs to be performed with the terminal is received, it is determined that the terminal meets a preset aperiodic beam training triggering condition.

Optionally, the processor 700 is further configured to: if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, adjusting at least one preset parameter in the periodic wave beam training parameters according to a first preset adjusting rule to obtain adjusted periodic wave beam training parameters; if the minimum value of the first threshold range is larger than the maximum value of the second threshold range, adjusting the preset parameters according to a second preset adjustment rule to obtain adjusted periodic wave beam training parameters; the adjusting direction of the second preset adjusting rule for adjusting the preset parameter is opposite to the adjusting direction of the first preset adjusting rule for adjusting the preset parameter, and the adjusting direction of the first preset adjusting rule for adjusting the preset parameter is to increase the value of the preset parameter or decrease the value of the preset parameter.

Optionally, if the preset parameter is a beam training period, the adjustment direction of the first preset adjustment rule for adjusting the preset parameter is to reduce the value of the preset parameter, and the processor 700 is further configured to: determining the value of the beam training period corresponding to the first threshold range according to the prestored value corresponding relation between the threshold range for triggering the beam training period change and the beam training period; the value of the beam training period corresponding to the first threshold range is smaller than the value of the beam training period corresponding to the second threshold range; and taking the determined value as the value of the beam training period in the adjusted periodic beam training parameter.

Optionally, if the preset parameter is a transmission space angle interval between two adjacent training signals of each TRP during training, the adjustment direction of the first preset adjustment rule for adjusting the preset parameter is a value for increasing the preset parameter, and the processor 700 is further configured to: determining the value of the transmission space angle interval of the two adjacent training signals of each TRP in the training period corresponding to the first threshold range according to the value corresponding relation between the pre-stored threshold range triggering the change of the beam training period and the transmission space angle interval of the two adjacent training signals of each TRP in the training period; the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is larger than that of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period; and taking the determined value as the value of the sending space angle interval of each TRP in the adjusted periodic beam training parameters in the two adjacent training signals in the training period.

Optionally, if the preset parameter is a training beam index offset, the adjustment direction of the first preset adjustment rule for adjusting the preset parameter is to increase a value of the preset parameter, and the processor 700 is further configured to: determining the value of the training beam index offset corresponding to the first threshold range according to the pre-stored corresponding relation between the threshold range triggering the beam training period change and the value of the training beam index offset; the value of the training beam index offset corresponding to the first threshold range is larger than the value of the training beam index offset corresponding to the second threshold range; and taking the determined value as the value of the training beam index offset in the adjusted periodic beam training parameter.

Optionally, the processor 700 is further configured to: and if the first statistical value is smaller than the minimum value in the plurality of threshold ranges, transmitting the traffic to the terminal by using the wide beam through the service TRP, or simultaneously transmitting the traffic to the terminal by using a plurality of narrow beams through the service TRP.

Optionally, the processor 700 is further configured to: performing non-periodic beam training with the terminal through all TRPs in the first TRP group; and receiving a second training result fed back by the terminal.

Optionally, the first training result includes: the beam index corresponding to the beam selected by the terminal and the received power of the downlink beam training signal corresponding to the beam selected by the terminal, the processor 700 is further configured to: updating the service TRP to which the terminal belongs to the TRP corresponding to the maximum receiving power in the first training result; and using the updated service TRP and a plurality of TRPs adjacent to the updated service TRP as a third TRP group.

Optionally, the processor 700 is further configured to: transmitting a message for notifying each of the plurality of TRPs of belonging to a third TRP group to each of the plurality of TRPs.

Optionally, the processor 700 is further configured to: and sending a message for informing that the TRP does not belong to the first TRP group to all TRPs in the first TRP group.

A transceiver 710 for receiving and transmitting data under the control of the processor 700.

Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

Therefore, when the network equipment detects that the terminal meets the preset periodic beam training parameter adjusting condition, the periodic beam training parameter is adjusted to obtain the adjusted periodic beam training parameter, the adjusted periodic beam training parameter is sent to the terminal and a sending and receiving point which needs to perform beam training with the terminal, then the sending and receiving point performs beam training with the terminal according to the adjusted periodic beam training parameter, and a first training result fed back by the terminal is received, so that when the high-frequency-band large-scale antenna beam forming is performed and the terminal moves at a high speed, the network side can maintain beam alignment with the terminal, and service transmission of a user is guaranteed.

Fifth embodiment

The foregoing first embodiment to the fourth embodiment respectively describe the beam training method and the network device of the present invention with respect to the network device side, and the following embodiment further describes the beam training method at the terminal side with reference to the drawings and specific application scenarios.

As shown in fig. 8, a fifth embodiment of the present invention provides a beam training method applied to a terminal (e.g., a smartphone, a tablet computer, etc.), including:

step 801, receiving the adjusted periodic beam training parameters sent by the network device.

Wherein the adjusted periodic beam training parameters include: a beam training period, a transmission spatial angle interval of two adjacent training signals of each TRP in a training period, and a training beam index offset.

And 802, performing beam training with the sending and receiving points which need to perform beam training with the terminal according to the adjusted periodic beam training parameters.

Wherein, the TRP required to perform beam training with the terminal includes: all TRPs in a first TRP group where a terminal belongs to a service TRP, and all TRPs in a second TRP group adjacent to the first TRP group. The first TRP group is a TRP group where a service sending receiving point TRP of a terminal belongs to, and the second TRP group is a TRP group adjacent to the first TRP group.

Step 803, feeding back the first training result to the network device.

Wherein the first training result comprises: the beam index corresponding to the beam selected by the terminal, the received power of the downlink beam training signal corresponding to the beam selected by the terminal, and the like. Wherein the downlink beam training signal is transmitted by a TRP performing beam training with the terminal.

In a fifth embodiment of the present invention, before the step 801 is executed, the method further includes the following steps: and when the condition that the preset notification condition is met is detected, sending a message for notifying the network equipment that the network equipment needs to perform aperiodic beam training with the terminal to the network equipment.

The specific implementation manner of detecting that the preset notification condition is met is as follows: if the quality of a downlink signal received by a terminal or the quality of a channel (which can be a downlink channel) is detected to be abnormal, determining that a preset notification condition is met; or, if the increase of the moving speed of the terminal is detected, it is determined that the preset notification condition is detected to be satisfied. The quality of the downlink signal quality and the channel quality may be power, signal-to-noise ratio, a carried channel data check result, and the like.

It should be noted that, for the terminal, the manner of detecting the increase of the moving speed of the terminal itself may be determined by hardware of the terminal itself, for example, the terminal is calibrated by sensing the acceleration of the terminal itself to reach a preset acceleration through a gravity sensor.

In a fifth embodiment of the present invention, the method further includes the following steps: and receiving the traffic transmitted through the service TRP, which is the service TRP to which the terminal currently belongs. The main reasons for performing this step are: at this time, the moving speed of the terminal is already high, and very frequent beam training is required, so that in order to reduce the overhead of beam training and avoid that the beam cannot track the high-speed terminal, the network device can use a wide beam or a plurality of narrow beams to transmit services to the terminal simultaneously through the service TRP.

Furthermore, in a fifth embodiment of the present invention, the method further comprises the steps of: and performing aperiodic beam training with all TRPs in the first TRP group, and feeding back a second training result to the network equipment. The main reasons for performing this step are: at this time, the network device detects that the terminal meets a preset aperiodic beam training triggering condition, that is, the terminal needs to perform aperiodic beam training with the network side to correct the beam, so as to achieve the effects of preventing link interruption, service transmission failure and influencing user experience as much as possible. The specific procedure of the aperiodic beam training is the same as that of the ordinary periodic beam training, and the difference is only that the aperiodic and disposable training is performed. The specific process of the aperiodic beam training comprises the following steps: and transmitting an aperiodic beam training signal through all TRPs in the first TRP group, and then detecting and feeding back a second training result by the terminal on the beam training signal.

Wherein, the second training result comprises: the beam index corresponding to the beam selected by the terminal, the receiving power of the downlink beam training signal corresponding to the beam selected by the terminal, and the like, so as to ensure that the terminal can maintain beam alignment with the network side and ensure service transmission of the user.

It can be seen that, in the fifth embodiment of the present invention, when receiving the adjusted periodic beam training parameter sent by the network device, according to the adjusted periodic beam training parameter, performing beam training with the TRP that needs to perform beam training with the terminal, and feeding back the first training result to the network device, so that when the high-frequency large-scale antenna beam forming is performed and the terminal moving speed is fast, the network side can maintain beam alignment with the terminal, thereby ensuring never-behind service transmission.

Sixth embodiment

The fifth embodiment has described the method of the beam training method in different scenarios in detail, and the terminal corresponding to the method is further described below with reference to fig. 9 and 10.

As shown in fig. 9 to 10, a sixth embodiment of the present invention provides a terminal 900 including:

a third receiving module 901, configured to receive an adjusted periodic beam training parameter sent by a network device;

a third training module 902, configured to perform beam training with a transmission receiving point TRP that needs to perform beam training with a terminal according to the adjusted periodic beam training parameter;

a first feedback module 903, configured to feed back the first training result to the network device.

The terminal 900 may be a smart phone, a tablet computer, or the like.

Optionally, the TRP required to perform beam training with the terminal includes: all TRPs in a first TRP group where a serving TRP to which a terminal belongs is located, and all TRPs in a second TRP group adjacent to the first TRP group,

the first TRP group is a TRP group where a service sending receiving point TRP of a terminal belongs to, and the second TRP group is a TRP group adjacent to the first TRP group.

Optionally, the terminal further includes:

a fourth sending module 904, configured to send, to the network device, a message for notifying the network device that the aperiodic beam training needs to be performed with the terminal when it is detected that the preset notification condition is met.

Optionally, the fourth sending module 904 includes:

a third detection submodule 9041, configured to determine that a preset notification condition is met if it is detected that the downlink signal receiving quality of the terminal or the channel quality is abnormal; or

And the fourth detection submodule 9042 is configured to determine that the preset notification condition is met if the increase in the moving speed of the terminal is detected.

Optionally, the adjusted periodic beam training parameter includes: a beam training period, a transmission spatial angle interval of two adjacent training signals of each TRP in a training period, and a training beam index offset.

Optionally, the terminal further includes:

a fourth receiving module 905, configured to receive the traffic transmitted through the serving TRP.

Optionally, the terminal further includes:

a fourth training module 906, configured to perform aperiodic beam training with all TRPs in the first TRP group;

a second feedback module 907, configured to feed back the second training result to the network device.

In the sixth embodiment of the present invention, when receiving the adjusted periodic beam training parameter sent by the network device, the terminal 900 performs beam training with the TRP that needs to perform beam training with the terminal according to the adjusted periodic beam training parameter, and feeds back the first training result to the network device, so that when the high-frequency large-scale antenna beam forming is performed and the terminal moving speed is fast, the network side can maintain beam alignment with the terminal, thereby ensuring never-behind service transmission.

Seventh embodiment

As shown in fig. 11, a seventh embodiment of the present invention provides a terminal 1100 including: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. The various components in terminal 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.

The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.

The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.

In this embodiment of the present invention, the processor 1101 is configured to receive the adjusted periodic beam training parameter sent by the network device by calling a program or an instruction stored in the memory 1102, specifically, a program or an instruction stored in the application 11022; performing beam training with a sending receiving point TRP which needs to perform beam training with a terminal according to the adjusted periodic beam training parameter; and feeding back the first training result to the network equipment.

Optionally, the TRP required to perform beam training with the terminal includes: all TRPs in a first TRP group where a service TRP which a terminal belongs to is located, and all TRPs in a second TRP group adjacent to the first TRP group, wherein the first TRP group is the TRP group where a service sending receiving point TRP which the terminal belongs to is located, and the second TRP group is the TRP group adjacent to the first TRP group.

The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with the hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, the processor 1101 is further configured to: and when the condition that the preset notification condition is met is detected, sending a message for notifying the network equipment that the network equipment needs to perform aperiodic beam training with the terminal to the network equipment.

Optionally, the processor 1101 is further configured to: if the quality of a downlink signal received by the terminal or the quality of a channel is detected to be abnormal, determining that a preset notification condition is met; or, if the increase of the moving speed of the terminal is detected, it is determined that the preset notification condition is detected to be satisfied.

Optionally, the processor 1101 is further configured to: traffic transmitted through the service TRP is received.

Optionally, the processor 1101 is further configured to: performing aperiodic beam training with all TRPs in the first TRP group; and feeding back the second training result to the network equipment.

The terminal 1100 is capable of implementing each process implemented by the terminal in the foregoing embodiments, and is not described here again to avoid repetition.

In the seventh embodiment of the present invention, when receiving the adjusted periodic beam training parameter sent by the network device, the terminal performs beam training with the TRP that needs to perform beam training with the terminal according to the adjusted periodic beam training parameter, and feeds back the first training result to the network device, so that when the high-frequency large-scale antenna beam forming is performed and the terminal moving speed is high, the network side can maintain beam alignment with the terminal, thereby ensuring never-behind service transmission.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A beam training method applied to a network device is characterized by comprising the following steps:

performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameters;

receiving a first training result fed back by the terminal;

the step of detecting that the terminal meets the preset periodic beam training parameter adjustment condition includes:

when the terminal is detected to meet the preset aperiodic beam training triggering condition, calculating a first statistical value of a time interval of every two adjacent times of detection that the terminal meets the preset aperiodic beam training triggering condition in a preset time period containing the current moment;

if the first statistical value belongs to a first threshold range in threshold ranges of a plurality of preset trigger wave beam training period changes and the first threshold range is different from a second threshold range to which a second statistical value belongs, determining that the terminal meets a preset period wave beam training parameter adjusting condition;

the second threshold range is one of a plurality of threshold ranges, and the second statistical value is a first statistical value calculated when the terminal is detected to meet a preset aperiodic beam training triggering condition last time.

2. The method of claim 1, wherein the TRP comprises: all TRPs in a first TRP group where a service TRP belonging to the terminal is located, and all TRPs in a second TRP group adjacent to the first TRP group.

3. The method according to claim 1, wherein the step of detecting that the terminal satisfies a preset aperiodic beam training trigger condition includes:

if the quality of the received uplink signal or the channel quality is detected to be abnormal, determining that the detected terminal meets a preset aperiodic beam training triggering condition; or

And if receiving a message which is sent by the terminal and used for informing the network equipment of non-periodic beam training with the terminal, determining that the terminal meets a preset non-periodic beam training triggering condition.

4. The method of claim 1, wherein the step of adjusting the periodic beam training parameters to obtain adjusted periodic beam training parameters comprises:

if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, adjusting at least one preset parameter in the periodic beam training parameters according to a first preset adjustment rule to obtain adjusted periodic beam training parameters;

if the minimum value of the first threshold range is larger than the maximum value of the second threshold range, adjusting the preset parameters according to a second preset adjustment rule to obtain adjusted periodic beam training parameters;

5. The method of claim 4, wherein if the predetermined parameter is a beam training period, the first predetermined adjustment rule adjusts the predetermined parameter in a direction that decreases a value of the predetermined parameter,

the step of adjusting at least one preset parameter in the periodic beam training parameters according to a first preset adjustment rule to obtain an adjusted periodic beam training parameter includes:

determining the value of the beam training period corresponding to the first threshold range according to the prestored value corresponding relation between the threshold range for triggering the beam training period change and the beam training period; the value of the beam training period corresponding to the first threshold range is smaller than the value of the beam training period corresponding to the second threshold range;

and taking the determined value as the value of the beam training period in the adjusted periodic beam training parameter.

6. The method of claim 4, wherein if the predetermined parameter is a transmission spatial angle interval of two adjacent training signals of each TRP during a training period, the first predetermined adjustment rule adjusts the predetermined parameter in a direction of increasing a value of the predetermined parameter,

determining the value of the transmission space angle interval of the two adjacent training signals of each TRP in the training period corresponding to the first threshold range according to the value corresponding relation between the pre-stored threshold range triggering the change of the beam training period and the transmission space angle interval of the two adjacent training signals of each TRP in the training period; the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is larger than the value of the transmission space angle interval of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period;

and taking the determined value as the value of the sending space angle interval of each TRP in the adjusted periodic beam training parameters in the two adjacent training signals in the training period.

7. The method of claim 4, wherein if the predetermined parameter is a training beam index offset, the first predetermined adjustment rule adjusts the predetermined parameter in a direction that increases a value of the predetermined parameter,

determining the value of the training beam index offset corresponding to the first threshold range according to the prestored value corresponding relationship between the threshold range triggering the beam training period change and the training beam index offset; wherein, the value of the training beam index offset corresponding to the first threshold range is greater than the value of the training beam index offset corresponding to the second threshold range;

and taking the determined value as the value of the training beam index offset in the adjusted periodic beam training parameter.

8. The method of claim 2, wherein after the step of calculating the first statistical value of the time interval during which the terminal satisfies the predetermined aperiodic beam training triggering condition every two adjacent times within the predetermined time period including the current time, the method further comprises:

and if the first statistical value is smaller than the minimum value in a plurality of threshold ranges, transmitting the traffic to the terminal by using a wide beam through the service TRP, or simultaneously transmitting the traffic to the terminal by using a plurality of narrow beams through the service TRP.

9. The method according to claim 2, wherein when it is detected that the terminal satisfies a preset aperiodic beam training trigger condition, the method further comprises:

performing aperiodic beam training with the terminal through all TRPs in the first TRP group;

and receiving a second training result fed back by the terminal.

10. The method of claim 2, wherein the first training result comprises: a beam index corresponding to the beam selected by the terminal, and a received power of a downlink beam training signal corresponding to the beam selected by the terminal,

after the step of receiving the first training result fed back by the terminal, the method further includes:

updating the service TRP to which the terminal belongs to the TRP corresponding to the maximum receiving power in the first training result;

and using the updated service TRP and a plurality of TRPs adjacent to the updated service TRP as a third TRP group.

11. The method according to claim 10, wherein after the step of using the updated serving TRP and the plurality of TRPs adjacent to the updated serving TRP as a third TRP group, the method further comprises:

transmitting a message for notifying each of the plurality of TRPs of belonging to the third TRP group to the TRP.

12. The method according to claim 10, wherein after the step of using the updated serving TRP and the plurality of TRPs adjacent to the updated serving TRP as a third TRP group, the method further comprises:

sending a message to all TRPs within the first TRP group to inform that the TRP does not belong to the first TRP group.

13. A network device, characterized in that the network device comprises:

the first sending module is used for sending the adjusted periodic beam training parameters to a terminal and sending receiving points TRP which need to perform beam training with the terminal;

the first training module is used for performing beam training with the terminal through the TRP according to the adjusted periodic beam training parameters;

the first receiving module is used for receiving a first training result fed back by the terminal;

the adjustment module includes:

the first detection submodule is used for calculating a first statistical value of a time interval of every two adjacent times of detection that the terminal meets the preset non-periodic wave beam training triggering condition in a preset time period containing the current time when the terminal meets the preset non-periodic wave beam training triggering condition is detected;

the second detection submodule is used for determining that the detected terminal meets the preset periodic wave beam training parameter adjustment condition if the first statistical value belongs to a first threshold range in threshold ranges of a plurality of preset trigger wave beam training period changes and the first threshold range is different from a second threshold range to which a second statistical value belongs;

14. The network device of claim 13, wherein the TRP comprises: all TRPs in a first TRP group where a service TRP belonging to the terminal is located, and all TRPs in a second TRP group adjacent to the first TRP group.

15. The network device of claim 13, wherein the first detection submodule comprises:

the first detection unit is used for determining that the detected terminal meets a preset aperiodic beam training triggering condition if the received uplink signal quality or the channel quality is detected to be abnormal; or

And the second detection unit is used for determining that the detected terminal meets a preset aperiodic beam training triggering condition if receiving a message which is sent by the terminal and used for informing the network device of the need of aperiodic beam training with the terminal.

16. The network device of claim 13, wherein the adjustment module comprises:

the first adjusting submodule is used for adjusting at least one preset parameter in the periodic wave beam training parameters according to a first preset adjusting rule if the maximum value of the first threshold range is smaller than the minimum value of the second threshold range, so as to obtain the adjusted periodic wave beam training parameters;

the second adjusting submodule is used for adjusting the preset parameters according to a second preset adjusting rule if the minimum value of the first threshold range is larger than the maximum value of the second threshold range, so as to obtain adjusted periodic beam training parameters;

17. The network device of claim 16, wherein if the preset parameter is a beam training period, the first preset adjustment rule adjusts the preset parameter in a direction that decreases a value of the preset parameter,

the first adjustment submodule includes:

the first adjusting unit is used for determining the value of the beam training period corresponding to the first threshold range according to the prestored value corresponding relation between the threshold range for triggering the beam training period change and the beam training period; the value of the beam training period corresponding to the first threshold range is smaller than the value of the beam training period corresponding to the second threshold range;

and the second adjusting unit is used for taking the determined value as the value of the beam training period in the adjusted periodic beam training parameter.

18. The network device of claim 16, wherein if the preset parameter is a transmission spatial angle interval of two adjacent training signals of each TRP during a training period, the first preset adjustment rule adjusts the preset parameter in a direction of increasing a value of the preset parameter,

the first adjustment submodule includes:

a third adjusting unit, configured to determine, according to a pre-stored value corresponding relationship between a threshold range triggering a beam training period change and a transmission space angle interval of two adjacent training signals of each TRP during a training period, a value of the transmission space angle interval of two adjacent training signals of each TRP during the training period, where the value corresponds to the first threshold range; the value of the transmission space angle interval of each TRP corresponding to the first threshold range in the two adjacent training signals in the training period is larger than the value of the transmission space angle interval of each TRP corresponding to the second threshold range in the two adjacent training signals in the training period;

and the fourth adjusting unit is used for taking the determined value as the value of the sending space angle interval of the two adjacent training signals of each TRP in the adjusted periodic beam training parameter in the training period.

19. The network device of claim 16, wherein if the preset parameter is a training beam index offset, the first preset adjustment rule adjusts the preset parameter in a direction that increases a value of the preset parameter,

the first adjustment submodule includes:

a fifth adjusting unit, configured to determine, according to a pre-stored value corresponding relationship between a threshold range that triggers a change of a beam training period and a training beam index offset, a value of the training beam index offset corresponding to the first threshold range; wherein, the value of the training beam index offset corresponding to the first threshold range is greater than the value of the training beam index offset corresponding to the second threshold range;

and the sixth adjusting unit is used for taking the determined value as the value of the training beam index offset in the adjusted periodic beam training parameter.

20. The network device of claim 14, wherein the network device further comprises:

a transmission module, configured to transmit, if the first statistical value is smaller than a minimum value in a plurality of threshold ranges, traffic to the terminal using a wide beam through the service TRP, or transmit traffic to the terminal simultaneously using a plurality of narrow beams through the service TRP.

21. The network device of claim 14, wherein the network device further comprises:

a second training module, configured to perform aperiodic beam training with the terminal through all TRPs in the first TRP group;

and the second receiving module is used for receiving a second training result fed back by the terminal.

22. The network device of claim 14, wherein the first training result comprises: a beam index corresponding to the beam selected by the terminal, and a received power of a downlink beam training signal corresponding to the beam selected by the terminal,

the network device further includes:

an updating module, configured to update a service TRP to which the terminal belongs to a TRP corresponding to a maximum received power in a first training result;

and the setting module is used for taking the updated service TRP and a plurality of TRPs adjacent to the updated service TRP as a third TRP group.

23. The network device of claim 22, wherein the network device further comprises:

a second transmitting module for transmitting a message for notifying each of the plurality of TRPs of the TRP belonging to the third TRP group.

24. The network device of claim 22, wherein the network device further comprises:

and a third sending module, configured to send, to all TRPs in the first TRP group, a message for notifying that the TRP does not belong to the first TRP group.

25. A beam training method is applied to a terminal, and is characterized in that the method comprises the following steps:

performing beam training with a sending receiving point TRP which needs to perform beam training with the terminal according to the adjusted periodic beam training parameter;

feeding back a first training result to the network equipment;

the adjusted periodic beam training parameters are obtained by adjusting the periodic beam training parameters when the network equipment detects that the terminal meets the preset periodic beam training parameter adjusting conditions;

the detecting that the terminal meets the preset periodic beam training parameter adjustment condition includes:

26. The method of claim 25, wherein the TRP required for beam training with the terminal comprises: all TRPs in a first TRP group where a serving TRP to which the terminal belongs and all TRPs in a second TRP group adjacent to the first TRP group,

the first TRP group is a TRP group where a service sending receiving point TRP of the terminal belongs to, and the second TRP group is a TRP group adjacent to the first TRP group.

27. The method of claim 25, wherein prior to the step of receiving the adjusted periodic beam training parameters transmitted by the network device, the method further comprises:

and when the condition that the preset notification condition is met is detected, sending a message for notifying the network equipment that the network equipment needs to perform aperiodic beam training with the terminal to the network equipment.

28. The method of claim 27, wherein the step of detecting that a preset notification condition is met comprises:

if the quality of the downlink signal received by the terminal or the channel quality is detected to be abnormal, determining that a preset notification condition is met; or

And if the increase of the moving speed of the terminal is detected, determining that the preset notification condition is met.

29. The method of claim 25, wherein the adjusted periodic beam training parameters comprise: a beam training period, a transmission spatial angle interval of two adjacent training signals of each TRP in a training period, and a training beam index offset.

30. The method of claim 26, further comprising:

receiving traffic transmitted through the serving TRP.

31. The method of claim 26, further comprising:

performing aperiodic beam training with all TRPs within the first TRP set;

and feeding back a second training result to the network equipment.

32. A terminal, characterized in that the terminal comprises:

the third training module is used for carrying out beam training on the transmission receiving point TRP which needs to carry out beam training with the terminal according to the adjusted periodic beam training parameter;

the first feedback module is used for feeding back a first training result to the network equipment;

33. The terminal of claim 32, wherein the TRP required for beam training with the terminal comprises: all TRPs in a first TRP group where a serving TRP to which the terminal belongs and all TRPs in a second TRP group adjacent to the first TRP group,

34. The terminal of claim 32, wherein the terminal further comprises:

and the fourth sending module is used for sending a message for informing the network device that the network device needs to perform aperiodic beam training with the terminal to the network device when the preset informing condition is detected to be met.

35. The terminal of claim 34, wherein the fourth sending module comprises:

the third detection submodule is used for determining that the preset notification condition is met if the quality of the downlink signal received by the terminal or the channel quality is detected to be abnormal; or

And the fourth detection submodule is used for determining that a preset notification condition is met if the increase of the moving speed of the terminal is detected.

36. The terminal of claim 32, wherein the adjusted periodic beam training parameters comprise: a beam training period, a transmission spatial angle interval of two adjacent training signals of each TRP in a training period, and a training beam index offset.

37. The terminal of claim 33, wherein the terminal further comprises:

and a fourth receiving module, configured to receive the traffic transmitted through the service TRP.

38. The terminal of claim 33, wherein the terminal further comprises:

a fourth training module, configured to perform aperiodic beam training with all TRPs in the first TRP group;

and the second feedback module is used for feeding back a second training result to the network equipment.