CN107733504B

CN107733504B - Method and terminal for processing downlink beam training signal

Info

Publication number: CN107733504B
Application number: CN201610666155.8A
Authority: CN
Inventors: 塔玛拉卡·拉盖施; 高秋彬; 黄秋萍; 李辉; 陈润华; 杨宇; 苏昕; 李传军; 王蒙军; 宋扬
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-08-12
Filing date: 2016-08-12
Publication date: 2021-11-23
Anticipated expiration: 2036-08-12
Also published as: CN107733504A

Abstract

The invention provides a method and a terminal for processing a downlink beam training signal, wherein the method for processing the downlink beam training signal comprises the following steps: adopting different downlink receiving wave beams to receive downlink receiving wave beam training signals of preset groups sent by a base station; and obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal. The scheme provided by the invention adopts different downlink receiving wave beams to receive the downlink receiving wave beam training signals sent by the base station, and obtains the downlink receiving wave beam of the downlink data sent by the receiving base station according to the received downlink receiving wave beam training signals, so that the terminal can be ensured to correctly receive the data, and the training of sending the receiving wave beam is realized.

Description

Method and terminal for processing downlink beam training signal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a terminal for processing a downlink beam training signal.

Background

The wireless access technology standards such as LTE (Long Term Evolution)/LTE-a (LTE-Advanced, Long Term Evolution Advanced) are constructed based on MIMO (Multiple-Input Multiple-Output ) + OFDM (Orthogonal Frequency Division Multiplexing) technology. The MIMO technology obtains high spatial degree of freedom by simultaneously using multiple antennas at a transmitting end and a receiving end, thereby improving the data transmission peak rate and the system frequency spectrum utilization rate of the system and greatly improving the system performance gain.

One of the most important evolution directions of MIMO technology in the development of standardization is the extension of dimensionality. In LTE Rel-8(LTE8 order), MIMO transmission of up to 4 layers can be supported. Rel-9(LTE9 order) is focused on enhancing MU-MIMO (Multi-User MIMO, Multi-User multiple input multiple output) technology, and at most 4 downlink data layers can be supported in TM (Transmission Mode) -8 MU-MIMO Transmission. Rel-10(10 th order) introduces ports supporting 8 antennas to further improve the spatial resolution of channel state information, and further extend the transmission capability of SU-MIMO (Single-User MIMO, Single-User multiple input multiple output) to at most 8 data layers. FD-MIMO (Full Dimension MIMO) technology support is introduced into 32 ports by Rel-13(13 th order) and Rel-14(14 th order), and beam forming in Full Dimension and vertical direction is realized.

In order to further improve the MIMO technology, a large-scale antenna technology is introduced into a mobile communication system. For a base station, a fully digital large scale antenna may have up to 128/256/512 antenna elements and up to 128/256/512 transceivers, one for each antenna element. By transmitting pilot signals of up to 128/256/512 antenna ports, the terminal is caused to measure and feed back channel state information. For terminals, antenna arrays of up to 32/64 antenna elements may also be configured. And a huge beam forming gain is obtained by beam forming at two sides of the base station and the terminal so as to make up for signal attenuation caused by path loss. Especially in high frequency band communication, such as 30GHz frequency point, the path loss makes the coverage of wireless signals extremely limited. By the large-scale antenna technology, the coverage range of wireless signals can be expanded to a practical range.

However, in the standardized version of the mobile communication system, the full digital antenna array is supported at present, that is, each antenna element has an independent transceiver, which will greatly increase the size, cost and power consumption of the device. Especially for an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC) of a transceiver, the power consumption is reduced by about 1/10 in the last decade, and the performance improvement is limited. In order to reduce the size, cost and power consumption of the device, a technical solution based on analog beamforming is proposed, as shown in fig. 1 and 2. The analog beamforming is mainly characterized in that intermediate frequency (figure 1) or radio frequency signals (figure 2) are weighted and shaped through phase shifters. The advantages are that all transmitting (receiving) antennas only have one transceiver, the realization is simple, and the cost, the size and the power consumption are reduced.

In order to further improve the analog beamforming performance, a digital analog hybrid beamforming transceiving architecture scheme is proposed, as shown in fig. 3. In FIG. 3, the transmitting end and the receiving end have

And

number of antenna oscillators of transceiver and transmitting end

Receiving end antenna oscillator number

The maximum number of parallel transmission streams supported by beam forming is

The hybrid beamforming structure of fig. 3 balances the flexibility of digital beamforming and the low complexity of analog beamforming, has the capability of supporting multiple data streams and simultaneous beamforming by multiple users, and simultaneously, the complexity is controlled within a reasonable range.

However, in future large-scale antenna systems, because analog beamforming or digital-analog hybrid beamforming first requires that a transmitting end and a receiving end align with a beam direction to correctly receive and transmit data, terminal receive beam training is required, and a scheme for terminal receive beam training is not required or does not exist in conventional systems.

Disclosure of Invention

The invention aims to provide a method and a terminal for processing a downlink beam training signal, which solve the problem that a downlink beam training scheme does not exist in the prior art.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for processing a downlink beam training signal, including:

adopting different downlink receiving wave beams to receive downlink receiving wave beam training signals of preset groups sent by a base station;

and obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal.

Optionally, the step of receiving, by using different downlink receiving beams, the preset number of groups of downlink receiving beam training signals sent by the base station includes:

adopting different downlink receiving wave beams to receive one or more groups of downlink receiving wave beam training signals sent by the base station by different downlink sending wave beams, wherein the downlink receiving wave beams of the downlink receiving wave beam training signals of the same group are different, the downlink sending wave beams are the same, the downlink sending wave beams of the downlink receiving wave beam training signals of different groups are different, and the downlink receiving wave beams are the same or different;

wherein, the number of the downlink receiving beam training signals of each group is greater than or equal to 1.

and adopting different downlink receiving wave beams to receive the downlink receiving wave beam training signals sent by the base station by adopting different wide downlink sending wave beams.

Optionally, the step of obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal includes:

and acquiring a downlink receiving beam training signal with the maximum received signal strength as the first target training signal, and acquiring a downlink receiving beam corresponding to the first target training signal as a downlink receiving beam for receiving downlink data sent by the base station.

Optionally, the method further includes:

receiving a preset group number of downlink transmission beam training signals transmitted by a base station by using the same downlink reception beam;

and obtaining a second target training signal of the downlink transmission beam for the base station to obtain the downlink data according to the downlink transmission beam training signal.

Optionally, the step of receiving the preset number of sets of downlink transmission beam training signals transmitted by the base station by using the same downlink reception beam includes:

adopting the same downlink receiving wave beam to receive one or more groups of downlink transmitting wave beam training signals which are transmitted by the base station by different downlink transmitting wave beams, wherein the downlink receiving wave beams of the downlink transmitting wave beam training signals are the same, and the downlink transmitting wave beams are different;

wherein the number of training sequences in each group is greater than or equal to 1.

Optionally, the step of obtaining, according to the downlink transmission beam training signal, a second target training signal for a base station to obtain a downlink transmission beam for transmitting downlink data includes:

and acquiring the downlink transmission beam training signal with the maximum received signal strength as a second target training signal.

when the downlink transmission beam comprises the downlink transmission beam of the first target training signal, acquiring a group of downlink transmission beam training signals corresponding to the downlink transmission beam of the first target training signal, acquiring the corresponding downlink transmission beam training signals according to the group, and acquiring a second target training signal from the acquired downlink transmission beam training signals; or

When the downlink transmission beams of the current time do not contain the downlink transmission beam of the first target training signal, acquiring a second target training signal from all the received downlink transmission beam training signals.

receiving multiple groups of downlink receiving beam training signals sent by a base station by different downlink sending beams, wherein the downlink receiving beams of the downlink receiving beam training signals of the same group are different, the downlink sending beams are the same, the downlink sending beams of the downlink receiving beam training signals of different groups are different, and the downlink receiving beams are the same or different;

receiving a plurality of groups of downlink transmission beam training signals transmitted by a base station by different downlink transmission beams, wherein the downlink reception beams of the downlink transmission beam training signals of the same group are the same, the downlink reception beams of different groups are the same or different, the downlink transmission beams of all the downlink transmission beam training signals are different, and the group number of the downlink reception beam training signals is the same as that of the downlink transmission beam training signals and is in one-to-one correspondence with the group number of the downlink transmission beam training signals;

the step of obtaining a first target training signal according to the downlink receiving beam training signal and obtaining a downlink receiving beam for receiving downlink data sent by a base station according to the first target training signal includes:

acquiring a downlink receiving beam training signal with the maximum signal intensity in each group of downlink receiving beam training signals as an intermediate training signal;

wherein, the downlink transmitting beam training signal is received by adopting the downlink receiving beam of the middle training signal of the corresponding group;

obtaining a first target training signal and a second target training signal used for a base station to obtain a downlink transmission beam for transmitting downlink data according to all received downlink transmission beam training signals;

and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal.

The invention also provides a method for processing the downlink beam training signal, which comprises the following steps:

and sending a preset group number of downlink receiving beam training signals to the terminal, so that the terminal can obtain downlink receiving beams for receiving downlink data according to the downlink receiving beam training signals.

Optionally, the step of sending the preset number of groups of downlink received beam training signals to the terminal includes:

sending one or more groups of downlink receiving beam training signals by different downlink sending beams, wherein the downlink sending beams of the downlink receiving beam training signals of the same group are the same, and the downlink sending beams of the downlink receiving beam training signals of different groups are different;

and periodically sending a preset group number of downlink receiving beam training signals to the terminal.

Optionally, the method further includes:

and sending the downlink transmission beam training signals with the preset group number to the terminal, so that the terminal can obtain a second target training signal for the base station to acquire the downlink transmission beam for transmitting downlink data.

Optionally, the step of sending the preset number of groups of downlink transmission beam training signals to the terminal includes:

sending one or more groups of downlink sending beam training signals by different downlink sending beams, wherein the downlink sending beams of the downlink sending beam training signals are different;

wherein, the number of the downlink transmission beam training signals of each group is greater than or equal to 1.

The present invention also provides a terminal, including:

the first receiving module is used for receiving downlink receiving beam training signals of a preset group number sent by a base station by adopting different downlink receiving beams;

and the first processing module is used for obtaining a first target training signal according to the downlink receiving beam training signal and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal.

Optionally, the first receiving module includes:

the first receiving submodule is used for receiving one or more groups of downlink receiving beam training signals sent by the base station by different downlink sending beams by adopting different downlink receiving beams, the downlink receiving beams of the downlink receiving beam training signals of the same group are different, the downlink sending beams are the same, the downlink sending beams of the downlink receiving beam training signals of different groups are different, and the downlink receiving beams are the same or different;

Optionally, the first receiving module includes:

and the second receiving submodule is used for receiving the downlink receiving beam training signals sent by the base station by adopting different wide downlink sending beams by adopting different downlink receiving beams.

Optionally, the first processing module includes:

and the first processing sub-module is configured to acquire a downlink receive beam training signal with the largest received signal strength as the first target training signal, and acquire a downlink receive beam corresponding to the first target training signal as a downlink receive beam for receiving downlink data sent by the base station.

Optionally, the method further includes:

the second receiving module is used for receiving the preset group number of downlink transmitting beam training signals transmitted by the base station by adopting the same downlink receiving beam;

and the second processing module is used for obtaining the second target training signal of the downlink transmission beam for transmitting downlink data according to the downlink transmission beam training signal and is used for the base station to obtain the second target training signal of the downlink transmission beam for transmitting downlink data.

Optionally, the second receiving module includes:

a third receiving submodule, configured to receive, by using the same downlink receiving beam, one or more groups of downlink transmitting beam training signals transmitted by the base station in different downlink transmitting beams, where downlink receiving beams of the downlink transmitting beam training signals are the same, and the downlink transmitting beams are different;

Optionally, the second processing module includes:

and the second processing submodule is used for acquiring the downlink transmission beam training signal with the maximum received signal intensity as a second target training signal.

Optionally, the second processing module includes:

a third processing sub-module, configured to, when there are multiple sets of downlink transmission beam training signals received by using the same downlink reception beam, and downlink reception beams of the downlink transmission beam training signals are the same, the downlink transmission beams are different, and the current downlink transmission beam includes a downlink transmission beam of the first target training signal, obtain a set of downlink transmission beam training signals corresponding to the downlink transmission beam of the first target training signal, obtain a corresponding downlink transmission beam training signal according to the set, and obtain a second target training signal in the obtained downlink transmission beam training signals; or

Optionally, the first receiving module includes:

a fourth receiving submodule, configured to receive multiple sets of downlink receiving beam training signals sent by the beam receiving base station with different downlink sending beams, where downlink receiving beams of the same set of downlink receiving beam training signals are different and are the same, downlink sending beams of different sets of downlink receiving beam training signals are different, and downlink receiving beams are the same or different;

the first processing module comprises:

the fourth processing submodule is used for acquiring the downlink receiving beam training signal with the maximum signal intensity in each group of downlink receiving beam training signals as an intermediate training signal;

The present invention also provides a base station, comprising:

the first sending module is used for sending a preset group number of downlink receiving beam training signals to the terminal, so that the terminal can obtain downlink receiving beams for receiving downlink data according to the downlink receiving beam training signals.

Optionally, the first sending module includes:

the first sending submodule is used for sending one or more groups of downlink receiving beam training signals by different downlink sending beams, the downlink sending beams of the downlink receiving beam training signals of the same group are the same, and the downlink sending beams of the downlink receiving beam training signals of different groups are different;

Optionally, the first sending module includes:

and the second sending submodule is used for periodically sending the preset groups of downlink receiving beam training signals to the terminal.

Optionally, the method further includes:

and the second sending module is used for sending the downlink sending beam training signals with the preset group number to the terminal, so that the terminal can obtain a second target training signal for the base station to obtain the downlink sending beam for sending the downlink data.

Optionally, the second sending module includes:

the third sending submodule is used for sending one or more groups of downlink sending beam training signals by using different downlink sending beams, and the downlink sending beams of the downlink sending beam training signals are different;

The technical scheme of the invention has the following beneficial effects:

in the above scheme, the method for processing the downlink beam training signal receives the downlink reception beam training signal sent by the base station by using different downlink reception beams, and obtains the downlink reception beam for receiving the downlink data sent by the base station according to the received downlink reception beam training signal, so that the terminal can be ensured to correctly receive the data, and the training of sending the reception beam is realized.

Drawings

Fig. 1 is a schematic diagram of analog beamforming (weighted forming on an intermediate frequency signal) in the prior art;

fig. 2 is a schematic diagram of analog beamforming (weighted beamforming on a radio frequency signal) in the prior art;

fig. 3 is a schematic diagram of digital-analog hybrid beamforming in the prior art;

FIG. 4 is a schematic flow chart of a method for processing a downlink beam training signal according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a method for processing a downlink beam training signal according to a second embodiment of the present invention;

FIG. 6 is a diagram illustrating a terminal receiving and a base station transmitting training sequences in an embodiment of the present invention;

FIG. 7 is a diagram illustrating P groups of terminals receiving and P groups of base stations transmitting training sequences in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a third terminal according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a four-terminal according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a five-base station according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a six-base station according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Aiming at the problem that a downlink beam training scheme does not exist in the prior art, the invention provides various solutions, which are as follows:

example one

As shown in fig. 4, a method for processing a downlink beam training signal according to an embodiment of the present invention may be applied to a terminal side, where the method includes:

step 41: adopting different downlink receiving wave beams to receive downlink receiving wave beam training signals of preset groups sent by a base station;

step 42: and obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal.

The reason for adopting different downlink receiving beams to receive the downlink receiving beam training signals sent by the base station is to compare and further select a better downlink receiving beam.

The scenario for the terminal to execute the processing method may be at power-on or when entering a signal coverage of a new base station. The processing method does not need to be executed for many times when the received wave beam is within the coverage range of the same base station, because the received wave beam can be locked after being aligned with the base station for the first time, and the base station automatically follows the terminal (the weight value is automatically and correspondingly changed, the prior art can realize the method, and the description is not repeated herein).

When the terminal executes the processing method, it starts to receive the downlink receive beam training signal marked as one sent by the base station, that is, receives each complete set of downlink receive beam training signals, and the base station may periodically send a set of downlink receive beam training signals.

The downlink receive beam can be understood as a downlink receive weight combination.

In view of that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the step of receiving the preset number of downlink receive beam training signals sent by the base station by using different downlink receive beams includes: adopting different downlink receiving wave beams to receive one or more groups of downlink receiving wave beam training signals sent by the base station by different downlink sending wave beams, wherein the downlink receiving wave beams of the downlink receiving wave beam training signals of the same group are different, the downlink sending wave beams are the same, the downlink sending wave beams of the downlink receiving wave beam training signals of different groups are different, and the downlink receiving wave beams are the same or different; wherein, the number of the downlink receiving beam training signals of each group is greater than or equal to 1.

In order to ensure a larger receiving range, the step of receiving the preset number of sets of downlink receiving beam training signals sent by the base station by using different downlink receiving beams includes: adopting different downlink receiving wave beams to receive downlink receiving wave beam training signals sent by a base station by adopting different wide downlink sending wave beams; subsequently, in order to ensure a faster search rate, different downlink receiving beams can be used to receive the downlink transmitting beam training signals transmitted by the base station by using different narrow downlink transmitting beams. Here, the wide downlink transmission beam is relative to the narrow downlink transmission beam.

Preferably, the step of obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal includes: and acquiring a downlink receiving beam training signal with the maximum received signal strength as the first target training signal, and acquiring a downlink receiving beam corresponding to the first target training signal as a downlink receiving beam for receiving downlink data sent by the base station.

Of course, the first target training signal may also be obtained according to the channel estimation, and is not limited herein.

Further, the processing method further comprises: receiving a preset group number of downlink transmission beam training signals transmitted by a base station by using the same downlink reception beam; and obtaining a second target training signal of the downlink transmission beam for the base station to obtain the downlink data according to the downlink transmission beam training signal.

When the terminal executes the processing method, it starts to receive the downlink transmission beam training signal marked as one sent by the base station, that is, receives each complete set of downlink transmission beam training signals, and the base station may periodically send a set of downlink transmission beam training signals.

In view of the fact that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the step of receiving the preset number of downlink transmit beam training signals transmitted by the base station using the same downlink receive beam includes: adopting the same downlink receiving wave beam to receive one or more groups of downlink transmitting wave beam training signals which are transmitted by the base station by different downlink transmitting wave beams, wherein the downlink receiving wave beams of the downlink transmitting wave beam training signals are the same, and the downlink transmitting wave beams are different; wherein the number of training sequences in each group is greater than or equal to 1.

Preferably, the step of obtaining, according to the downlink transmission beam training signal, a second target training signal for a base station to obtain a downlink transmission beam for transmitting downlink data includes: and acquiring the downlink transmission beam training signal with the maximum received signal strength as a second target training signal.

Of course, the second target training signal may also be obtained according to the channel estimation, and is not limited herein.

When there are multiple groups of downlink transmission beam training signals, there may be two ways to obtain the second target training signal, specifically: the step of obtaining a second target training signal of a downlink transmission beam for transmitting downlink data according to the downlink transmission beam training signal, which is obtained by the base station, includes: in the method a, when there are multiple sets of downlink transmission beam training signals received by using the same downlink reception beam, and the downlink reception beams of the downlink transmission beam training signals are the same, the downlink transmission beams are different, and the current downlink transmission beam includes the downlink transmission beam of the first target training signal, the set of downlink transmission beam training signals corresponding to the downlink transmission beam of the first target training signal is obtained, the corresponding downlink transmission beam training signal is obtained according to the set, and the second target training signal is obtained in the obtained downlink transmission beam training signals; or

In the method B, when there are multiple sets of downlink transmission beam training signals received by using the same downlink reception beam, and the downlink reception beams of the downlink transmission beam training signals are the same, the downlink transmission beams are different, and the current downlink transmission beam does not include the downlink transmission beam of the first target training signal, the second target training signal is obtained from all the received downlink transmission beam training signals.

For example, when a downlink transmission beam transmitted by the base station for transmitting the downlink reception beam training signal corresponds to a downlink transmission beam transmitted by the base station for transmitting the downlink transmission beam training signal, the downlink transmission beam transmitted by the base station for transmitting downlink data is acquired from the downlink transmission beam corresponding to the downlink reception beam training signal with the strongest power selected by the terminal.

Further, the obtaining of the downlink receiving beam of the downlink data sent by the receiving base station according to the downlink receiving beam training signal further includes: and receiving downlink data sent by the base station through the determined downlink receiving wave beam.

The terminal can distinguish whether the downlink receiving beam training signal or the downlink data by means of the received signal identification.

Specifically, the step of receiving the downlink data sent by the base station through the determined downlink receiving beam includes: and receiving downlink data sent by the base station through the downlink sending wave beam determined by the base station through the determined downlink receiving wave beam.

And the downlink receiving wave beam determined by the terminal and the downlink sending wave beam determined by the base station can carry out more accurate data transmission.

In order to obtain a more accurate result, an embodiment of the present invention further provides that the step of receiving, by using different downlink receive beams, the preset number of sets of downlink receive beam training signals sent by the base station includes:

the step of obtaining a first target training signal according to the downlink receiving beam training signal and obtaining a downlink receiving beam for receiving downlink data sent by a base station according to the first target training signal includes: acquiring a downlink receiving beam training signal with the maximum signal intensity in each group of downlink receiving beam training signals as an intermediate training signal;

obtaining a first target training signal and a second target training signal used for a base station to obtain a downlink transmission beam for transmitting downlink data according to all received downlink transmission beam training signals; and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal.

As can be seen from the above, in the method for processing the downlink beam training signal provided in the embodiment of the present invention, different downlink reception beams are used to receive the downlink reception beam training signal sent by the base station, and the downlink reception beam of the downlink data sent by the base station is obtained according to the received downlink reception beam training signal, so that it can be ensured that the terminal correctly receives the data, and training of sending the reception beam is achieved.

Example two

As shown in fig. 5, a method for processing a downlink beam training signal according to a second embodiment of the present invention may be applied to a base station side, where the method includes:

step 51: and sending a preset group number of downlink receiving beam training signals to the terminal, so that the terminal can obtain downlink receiving beams for receiving downlink data according to the downlink receiving beam training signals.

Wherein the base station may transmit signals in a polling direction.

Considering that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the step of sending the downlink receive beam training signals of the preset number of groups to the terminal includes: sending one or more groups of downlink receiving beam training signals by different downlink sending beams, wherein the downlink sending beams of the downlink receiving beam training signals of the same group are the same, and the downlink sending beams of the downlink receiving beam training signals of different groups are different; wherein, the number of the downlink receiving beam training signals of each group is greater than or equal to 1.

In order to guarantee normal communication of the terminal in real time, the step of sending the preset number of groups of downlink received beam training signals to the terminal includes: and periodically sending a preset group number of downlink receiving beam training signals to the terminal.

Further, the processing method further comprises: and sending the downlink transmission beam training signals with the preset group number to the terminal, so that the terminal can obtain a second target training signal for the base station to acquire the downlink transmission beam for transmitting downlink data.

In view of the fact that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the step of sending the downlink transmission beam training signals of the preset number of groups to the terminal includes: sending one or more groups of downlink sending beam training signals by different downlink sending beams, wherein the downlink sending beams of the downlink sending beam training signals are different; wherein, the number of the downlink transmission beam training signals of each group is greater than or equal to 1.

Further, after sending the preset number of groups of downlink received beam training signals to the terminal, the method further includes: determining a downlink transmission beam used for transmitting downlink data; and utilizing the beam forming weight of the downlink sending beam to form the downlink data and then sending the downlink data to a terminal. This ensures better communication with the terminal.

In the method for processing the downlink beam training signals provided by the second embodiment of the present invention, the terminal can complete the training of issuing the received beam and correctly receive data by sending the preset number of sets of downlink received beam training signals to the terminal.

The following describes, by way of example, a method for processing a downlink beam training signal according to an embodiment of the present invention with reference to a terminal side and a base station side.

First example

The method for processing the downlink beam training signal provided by the embodiment of the invention comprises the following steps:

a1) the base station side repeatedly sends K times of terminal receiving training sequences (downlink receiving beam training signals), wherein K is more than or equal to 1, and the K times of terminal receiving training sequences are sent by adopting the same forming weight, namely the coverage of the K times of terminal receiving training sequences is the same;

b1) the terminal side adopts different receiving beams, namely different receiving weights, searches the terminal receiving training sequence and determines the best receiving beam or weight;

c1) the base station side additionally sends M times of transmission training sequences (downlink transmission beam training signals), where M is greater than or equal to 1, and sends M times of transmission training sequences by using M different forming weights, that is, the coverage of the M times of transmission training sequences is different, as shown in fig. 6, which includes a pilot/training period (RS period), a Reception (RX) beam training symbol, and a transmission group (e.g., TxB 0);

d1) the base station side repeatedly sends the training sequence received by the terminal and the training sequence sent by the terminal with the period of N, for example, the training sequence is sent once in 10ms, and the training sequence received by the terminal and the training sequence sent by the terminal are sent at intervals.

Second example

There are P groups of training sequences, and P > 1.

a2) the base station side sends P groups of terminal receiving training sequences, each group comprises K which is more than or equal to 1 sending training sequence, and the base station side sends P groups of terminal receiving training sequences by adopting P different forming weights;

b2) the base station side sends P groups of sending training sequences in addition, each group contains M which is more than or equal to 1 sending training sequence, the base station side sends M times of sending training sequences by adopting M different forming weights, namely the coverage of the M times of sending training sequences is different;

c2) p groups of K terminal received training sequences have a one-to-one correspondence relationship with P groups of M transmitted training sequences, and the coverage of training sequences in the same group may be the same, for example, the coverage of K terminal received training sequences in the first group is the same as the coverage of M transmitted training sequences in the first group (the same transmitted beam);

d2) the terminal side adopts different receiving beams, namely different receiving weights, searches the terminal receiving training sequence, determines the best receiving beam or weight (the signal strength of the training sequence is maximum) and determines one of the P groups;

e2) the terminal side searches M transmission training sequences from the set of transmission training sequences corresponding to the set of determined terminal reception training sequences and determines a final transmission training sequence, as shown in fig. 7, which includes a pilot/training period (RS period), a Reception (RX) beam training symbol-wide beam group (e.g., wide beam 0/WB0), and a transmission group (e.g., TxB 0).

f2) The base station side repeatedly sends P groups of terminal receiving training sequences and P groups of sending training sequences with the period of N, for example, sending the sequences once in 10ms, and the terminal receiving training sequences and sending training sequences are sent at intervals.

Here, d2) and e2) are still another way:

d2) the terminal side receives each group of terminal receiving training sequences and determines the optimal receiving beam aiming at each group of training sequences;

e2) the terminal side receives and transmits the training sequence, and for each transmitted training sequence, the terminal side receives by using the optimal receiving beam of the received training sequence group corresponding to the transmitted training sequence; the terminal selects the best transmit beam and receive beam from the P × M transmit training sequences.

When the condition in c2) is not satisfied, that is, there is no correspondence between the received midamble in P groups of K terminals and the transmitted midamble in P groups of M terminals, d2) and e2) are respectively:

d2) the terminal side receives each group of terminal receiving training sequences, determines the optimal receiving beam aiming at each group of training sequences, and obtains the final receiving beam (the optimal beam in all the receiving beams) from each group of the obtained optimal receiving beams;

e2) a terminal side receives and transmits training sequences, and for each transmitted training sequence, the terminal side receives by adopting a final receiving wave beam; the terminal selects the best transmission beam from the PxM transmission training sequences.

As can be seen from the above, embodiments of the present invention also provide a method for training a terminal to receive a beam and a method for determining a corresponding network-side transmit beam in a large-scale antenna system, so as to solve the problem that a downlink beam training scheme does not exist in the prior art.

EXAMPLE III

As shown in fig. 8, a terminal provided in the third embodiment of the present invention includes:

a first receiving module 81, configured to receive downlink receive beam training signals of a preset number of groups sent by a base station by using different downlink receive beams;

the first processing module 82 is configured to obtain a first target training signal according to the downlink receive beam training signal, and obtain a downlink receive beam for receiving downlink data sent by the base station according to the first target training signal.

In view of that the preset number of groups may be one group or multiple groups, in an embodiment of the present invention, the first receiving module includes: the first receiving submodule is used for receiving one or more groups of downlink receiving beam training signals sent by the base station by different downlink sending beams by adopting different downlink receiving beams, the downlink receiving beams of the downlink receiving beam training signals of the same group are different, the downlink sending beams are the same, the downlink sending beams of the downlink receiving beam training signals of different groups are different, and the downlink receiving beams are the same or different; wherein, the number of the downlink receiving beam training signals of each group is greater than or equal to 1.

In order to ensure a larger receiving range, the first receiving module comprises: the second receiving submodule is used for receiving downlink receiving beam training signals sent by the base station by adopting different wide downlink sending beams by adopting different downlink receiving beams; subsequently, in order to ensure a faster search rate, the method can also be used for receiving the downlink transmission beam training signals transmitted by the base station by using different narrow downlink transmission beams by using different downlink reception beams. Here, the wide downlink transmission beam is relative to the narrow downlink transmission beam.

Preferably, the first processing module includes: and the first processing sub-module is configured to acquire a downlink receive beam training signal with the largest received signal strength as the first target training signal, and acquire a downlink receive beam corresponding to the first target training signal as a downlink receive beam for receiving downlink data sent by the base station.

Further, the terminal further includes: the second receiving module is used for receiving the preset group number of downlink transmitting beam training signals transmitted by the base station by adopting the same downlink receiving beam; and the second processing module is used for obtaining the second target training signal of the downlink transmission beam for transmitting downlink data according to the downlink transmission beam training signal and is used for the base station to obtain the second target training signal of the downlink transmission beam for transmitting downlink data.

Also considering that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the second receiving module includes: a third receiving submodule, configured to receive, by using the same downlink receiving beam, one or more groups of downlink transmitting beam training signals transmitted by the base station in different downlink transmitting beams, where downlink receiving beams of the downlink transmitting beam training signals are the same, and the downlink transmitting beams are different; wherein the number of training sequences in each group is greater than or equal to 1.

Preferably, the second processing module includes: and the second processing submodule is used for acquiring the downlink transmission beam training signal with the maximum received signal intensity as a second target training signal.

When there are multiple groups of downlink transmission beam training signals, there may be two ways to obtain the second target training signal, and correspondingly, the second processing module includes: a third processing sub-module, configured to, when there are multiple sets of downlink transmission beam training signals received by using the same downlink reception beam, and downlink reception beams of the downlink transmission beam training signals are the same, the downlink transmission beams are different, and the current downlink transmission beam includes a downlink transmission beam of the first target training signal, obtain a set of downlink transmission beam training signals corresponding to the downlink transmission beam of the first target training signal, obtain a corresponding downlink transmission beam training signal according to the set, and obtain a second target training signal in the obtained downlink transmission beam training signals; or when there are multiple groups of downlink transmission beam training signals received by using the same downlink reception beam, and the downlink reception beams of the downlink transmission beam training signals are the same, the downlink transmission beams are different, and the current downlink transmission beam does not include the downlink transmission beam of the first target training signal, a second target training signal is obtained from all the received downlink transmission beam training signals.

In order to obtain a more accurate result, an embodiment of the present invention further provides that the first receiving module includes: a fourth receiving submodule, configured to receive multiple sets of downlink receiving beam training signals sent by the beam receiving base station with different downlink sending beams, where downlink receiving beams of the same set of downlink receiving beam training signals are different and are the same, downlink sending beams of different sets of downlink receiving beam training signals are different, and downlink receiving beams are the same or different;

the first processing module comprises: the fourth processing submodule is used for acquiring the downlink receiving beam training signal with the maximum signal intensity in each group of downlink receiving beam training signals as an intermediate training signal; wherein, the downlink transmitting beam training signal is received by adopting the downlink receiving beam of the middle training signal of the corresponding group;

As can be seen from the above, the terminal provided in the third embodiment of the present invention receives the downlink receive beam training signal sent by the base station by using different downlink receive beams, and obtains the downlink receive beam for receiving the downlink data sent by the base station according to the received downlink receive beam training signal, so as to ensure that the terminal correctly receives the data, and implement training of sending the receive beam.

It should be noted that the terminal provided in the third embodiment of the present invention is a terminal corresponding to the method for processing the downlink beam training signal at the terminal side provided in the foregoing embodiment, so that all embodiments of the method for processing the downlink beam training signal at the terminal side provided in the foregoing embodiment are applicable to the terminal, and can achieve the same or similar beneficial effects.

Example four

As shown in fig. 9, a fourth embodiment of the present invention provides a terminal, including:

a processor 91; and a memory 93 connected to the processor 91 through a bus interface 92, wherein the memory 93 is used for storing programs and data used by the processor 91 in executing operations, and when the processor 91 calls and executes the programs and data stored in the memory 93, the following processes are performed:

receiving, by the transceiver 94, a preset number of sets of downlink receive beam training signals transmitted by the base station using different downlink receive beams;

a first target training signal is obtained according to the downlink reception beam training signal, and a downlink reception beam for receiving downlink data transmitted by the base station through the transceiver 94 is obtained according to the first target training signal.

Among other things, a transceiver 94 is connected to the bus interface 92 for receiving and transmitting data under the control of the processor 91.

It should be noted that in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 91 and various circuits of memory represented by memory 93 being linked together. 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 94 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. For different terminals, the user interface 95 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 91 is responsible for managing the bus architecture and general processing, and the memory 93 may store data used by the processor 91 in performing operations.

Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

EXAMPLE five

As shown in fig. 10, a base station provided in the fifth embodiment of the present invention includes:

the first sending module 101 is configured to send a preset number of groups of downlink receive beam training signals to the terminal, so that the terminal can obtain a downlink receive beam for receiving downlink data according to the downlink receive beam training signals.

Wherein the base station may transmit signals in a polling direction.

Considering that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the first sending module includes: the first sending submodule is used for sending one or more groups of downlink receiving beam training signals by different downlink sending beams, the downlink sending beams of the downlink receiving beam training signals of the same group are the same, and the downlink sending beams of the downlink receiving beam training signals of different groups are different; wherein, the number of the downlink receiving beam training signals of each group is greater than or equal to 1.

In order to guarantee normal communication of the terminal in real time, the first sending module includes: and the second sending submodule is used for periodically sending the preset groups of downlink receiving beam training signals to the terminal.

Further, the base station further includes: and the second sending module is used for sending the downlink sending beam training signals with the preset group number to the terminal, so that the terminal can obtain a second target training signal for the base station to obtain the downlink sending beam for sending the downlink data.

Also considering that the preset number of groups may be one group or multiple groups, in this embodiment of the present invention, the second sending module includes: the third sending submodule is used for sending one or more groups of downlink sending beam training signals by using different downlink sending beams, and the downlink sending beams of the downlink sending beam training signals are different; wherein, the number of the downlink transmission beam training signals of each group is greater than or equal to 1.

The base station provided by the fifth embodiment of the invention can enable the terminal to finish the training of sending the receiving wave beam and correctly receive data by sending the preset group number of the downlink receiving wave beam training signals to the terminal.

It should be noted that the base station provided in the fifth embodiment of the present invention is a base station corresponding to the method for processing the downlink beam training signal at the base station side provided in the foregoing embodiment, so that all embodiments of the method for processing the downlink beam training signal at the base station side provided in the foregoing embodiment are applicable to the base station, and can achieve the same or similar beneficial effects.

EXAMPLE six

As shown in fig. 11, the present embodiment provides a base station, including:

a processor 111; and a memory 113 connected to the processor 111 through a bus interface 112, wherein the memory 113 is used for storing programs and data used by the processor 111 in executing operations, and when the processor 111 calls and executes the programs and data stored in the memory 113, the following processes are executed:

the transceiver 114 sends a preset number of sets of downlink receive beam training signals to the terminal, so that the terminal can obtain downlink receive beams for receiving downlink data according to the downlink receive beam training signals.

Among other things, the transceiver 114 is connected to the bus interface 112 for receiving and transmitting data under the control of the processor 111.

It should be noted that in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 111 and various circuits of memory represented by memory 113 being linked together. 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 114 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 111 is responsible for managing the bus architecture and general processing, and the memory 113 may store data used by the processor 111 in performing operations.

It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.

In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.

When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

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.

Claims

1. A method for processing a downlink beam training signal, comprising:

when the terminal is started or enters a signal coverage range of a new base station, adopting different downlink receiving wave beams to receive downlink receiving wave beam training signals of a preset group number sent by the base station;

obtaining a first target training signal according to the downlink receiving beam training signal, and obtaining a downlink receiving beam for receiving downlink data sent by a base station according to the first target training signal;

further comprising:

the second target training signal is obtained according to the downlink transmission beam training signal and is used for the base station to obtain the downlink transmission beam for transmitting downlink data;

the step of obtaining a second target training signal of a downlink transmission beam for transmitting downlink data according to the downlink transmission beam training signal, which is obtained by the base station, includes:

2. The processing method according to claim 1, wherein the step of receiving the predetermined number of sets of downlink receive beam training signals transmitted by the base station using different downlink receive beams comprises:

3. The processing method according to claim 1, wherein the step of receiving the predetermined number of sets of downlink receive beam training signals transmitted by the base station using different downlink receive beams comprises:

4. The processing method according to claim 1, wherein the step of obtaining a first target training signal according to the downlink reception beam training signal, and obtaining a downlink reception beam for receiving downlink data transmitted by a base station according to the first target training signal comprises:

5. The processing method according to claim 1, wherein the step of receiving the preset number of sets of downlink transmit beam training signals transmitted by the base station using the same downlink receive beam comprises:

6. The processing method according to claim 1, wherein the step of obtaining, according to the downlink transmission beam training signal, a second target training signal for a base station to obtain a downlink transmission beam for transmitting downlink data comprises:

7. The processing method according to claim 1, wherein the step of receiving the predetermined number of sets of downlink receive beam training signals transmitted by the base station using different downlink receive beams comprises:

8. A terminal, comprising:

the first receiving module is used for receiving downlink receiving beam training signals of a preset group number sent by a base station by adopting different downlink receiving beams when the terminal is started or enters a signal coverage range of a new base station;

the first processing module is used for obtaining a first target training signal according to the downlink receiving beam training signal and obtaining a downlink receiving beam for receiving downlink data sent by the base station according to the first target training signal;

further comprising:

a second processing module, configured to obtain, according to the downlink transmission beam training signal, a second target training signal of a downlink transmission beam for transmitting downlink data, where the second target training signal is obtained by a base station;

the second processing module comprises:

9. The terminal of claim 8, wherein the first receiving module comprises:

10. The terminal of claim 8, wherein the first receiving module comprises:

11. The terminal of claim 8, wherein the first processing module comprises:

12. The terminal of claim 8, wherein the second receiving module comprises:

13. The terminal of claim 8, wherein the second processing module comprises:

14. The terminal of claim 8, wherein the first receiving module comprises:

a fourth receiving submodule, configured to receive multiple sets of downlink receiving beam training signals sent by the base station with different downlink sending beams, where downlink receiving beams of the same set of downlink receiving beam training signals are different from each other, and the downlink sending beams are the same, and downlink sending beams of different sets of downlink receiving beam training signals are different from each other, and the downlink receiving beams are the same or different;

the first processing module comprises: