WO2018053850A1

WO2018053850A1 - Method and apparatus for synchronously transmitting data

Info

Publication number: WO2018053850A1
Application number: PCT/CN2016/100155
Authority: WO
Inventors: 魏娜; 徐然
Original assignee: 北京小米移动软件有限公司
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2018-03-29
Also published as: CN106797625B; CN106797625A

Abstract

Embodiments of the present disclosure relate to the technical field of communications. Provided are a method and apparatus for synchronously transmitting data. The present disclosure comprises: determining information about multiple target wave beam pairs from information about multiple wave beam pairs, the reception power of each target wave beam pair being greater than or equal to a preset reception power, each wave beam pair comprising a first wave beam and a second wave beam, the first wave beam being generated by an antenna array on a base station side, and the second wave beam being generated by an antenna array on a terminal side; determining, according to the information about the multiple target wave beam pairs, wave beam sets to which the target wave beam pairs belong; and transmitting data according to the multiple target wave beam pairs and the wave beam sets to which the target wave beam pairs belong. That is, in data transmission, data is transmitted according to the multiple target wave beam pairs and the condition of the wave beam sets to which the target wave beam pairs capable of being used for data transmission belong. A transmission time delay difference among the multiple target wave beam pairs used for data transmission can be eliminated by a system, and accordingly the transmitted data satisfies synchronization requirements at the reception end.

Description

Data transmission synchronization method and device

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission synchronization method and apparatus.

Background technique

With the rapid development of communication technologies, the spectrum resources of mobile communication networks are facing an increasingly scarce situation. As the carrier frequency increases, the spectrum resources of the high frequency band become more and more abundant, and the communication technology field is introducing the spectrum resources of the high frequency band into the mobile communication network. However, since the path loss increases as the carrier frequency increases, in the process of introducing the spectrum resources of the high frequency band into the mobile communication network, the beamforming technique of the large-scale antenna is usually used to solve the path loss problem.

At present, in order to obtain the maximum system throughput, it is necessary to use beamforming techniques at the transmitting end and the receiving end simultaneously to communicate based on multiple beam pairs, that is, there are multiple beam pairs for communication between the terminal and the base station. The plurality of beam pairs correspond to a plurality of transmission channels, and the transmission channels mainly include two types: a LOS (Line of Sight) transmission channel and an NLOS (No Line of Sight) transmission channel. In the LOS environment, waves are transmitted along a straight line, while in a NLOS environment, waves are reflected or diffracted by an obstacle to reach the receiving end. Therefore, it is not difficult to understand that the transmission delay of the LOS transmission channel is short, and the transmission delay of the NLOS transmission channel is long.

In a mobile communication network, data is usually transmitted in units of symbols. In order to eliminate ISI (Inter Symbol Interference) caused by multipath, a CP (Cyclic Prefix) is usually arranged in front of the symbol. At the same time, when transmitting data based on multiple beam pairs corresponding to the above two types of channels, there is a certain transmission delay difference. In the traditional low-band communication, the transmission delay difference is usually much smaller than the length of the CP, so The system is eliminated. However, in high-band communication, it is usually necessary to shorten the length of the symbol greatly, and thus, the length of the CP is also shortened, that is, when the communication is performed in the high frequency band, the transmission delay difference is much larger than that of the CP. Length, in this case, when data is transmitted based on multiple beam pairs corresponding to the two channels, the generated transmission delay difference cannot be eliminated by the system, and the data transmitted by multiple beam pairs cannot be reached at the receiving end. Synchronization requirements.

Summary of the invention

In order to solve the technical problems in the prior art, embodiments of the present disclosure provide a data transmission synchronization method and apparatus. The technical solution is as follows:

The first aspect provides a data transmission synchronization method, which is applied to a base station, where the method includes:

And determining, by the plurality of beam pair information, a plurality of target beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes a first beam and a second beam, where the first a beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on a terminal side;

Determining, according to the plurality of target beam pair information, a beam group to which each target beam pair belongs;

Data is transmitted based on the plurality of target beam pairs according to the beam group to which each target beam pair belongs to achieve data transmission synchronization.

In a possible implementation manner, before the determining, according to the multiple target beam pair information, the beam group to which each target beam pair belongs, the method further includes:

Receiving packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.

Determining a transmission delay of the beam pair for each of a plurality of beam pairs;

And grouping the plurality of beam pairs based on transmission delays of the multiple beam pairs;

The correspondence between each group of beam pair information and the associated beam group is stored.

In a possible implementation, the determining a transmission delay of the beam pair includes:

Transmitting a downlink reference signal to the terminal based on the first beam of the beam pair, and recording a transmission time point;

Determining a reception time point when receiving the uplink reference signal sent by the terminal based on the second beam of the beam pair;

A difference between the reception time point and the transmission time point is determined as a transmission delay of the beam pair.

In a possible implementation, the grouping the multiple beam pairs based on a transmission delay of the multiple beam pairs includes:

Determining a transmission delay difference between two spatially adjacent pairs of the plurality of beam pairs;

Determining a plurality of beam groups according to a transmission delay difference between the two spatially adjacent pairs of beam beams, wherein a difference in transmission delay between two spatially adjacent pairs of beam groups in each beam group is determined Less than Or equal to the preset threshold.

In a possible implementation manner, the transmitting, according to the beam group to which each target beam pair belongs, data based on the multiple target beam pairs includes:

Transmitting data through the plurality of target beam pairs when the plurality of target beam pairs belong to the same beam group; or

When the plurality of target beam pairs do not belong to the same beam group, select N target beam pairs belonging to the same beam group and having a transmission delay less than or equal to a preset delay, and pass through the plurality of target beam pairs. The selected N target beam pairs transmit data.

In a possible implementation, before the data is transmitted according to the multiple target beam pairs, according to the beam group to which each target beam pair belongs, the method further includes:

Determining, by using a time division duplex TDD mode, a guard interval GP corresponding to a beam group to which the plurality of target beam pairs belong, the GP being positively correlated with a transmission delay;

The TDD frame structure configuration is performed on the data to be transmitted based on the determined GP.

A second aspect provides a data transmission synchronization method, which is applied to a terminal, where the method includes:

Determining whether the plurality of target beam pairs belong to the same beam group when the data is transmitted based on the plurality of target beam pairs, and each of the plurality of target beam pairs includes the first beam and the second beam, The first beam is generated by an antenna array on the base station side, and the second beam is generated by the antenna array on the terminal side;

When the plurality of target beam pairs belong to the same beam group, data is transmitted through the plurality of target beam pairs.

In a possible implementation manner, the method further includes:

Receiving, by the base station, a downlink reference signal that is sent according to a first beam of each beam pair;

Determining whether the respective beam pairs belong to the same beam group;

When the respective beam pairs belong to the same beam group, the uplink reference signal is sent by the second beam of each beam pair;

Determining two beam pairs that belong to different beam groups and are spatially adjacent when the respective beam pairs do not belong to the same beam group;

Any one of the determined two beam pairs is ignored and the uplink reference signal is transmitted by a second beam of each beam pair other than the ignored beam pair.

In a possible implementation, the downlink reference signal carries a packet configuration principle, and after the receiving, by the base station, the downlink reference signal sent by the first beam of each beam pair, the method further includes:

Determining a plurality of transmission delay differences, wherein each of the plurality of transmission delay differences refers to a transmission delay difference of the second beam receiving downlink reference signals of the two spatially adjacent pairs of the beam pairs;

And grouping a plurality of beam pairs based on the plurality of transmission delay differences and the packet configuration principle;

The correspondence between each group of beam pair information and the associated beam group is stored, and the group information is sent to the base station, where the group information includes a correspondence between each beam pair information and the associated beam group.

In a possible implementation manner, the method further includes:

Receiving indication information sent by the base station, where the indication information includes multiple target beam pair information;

Determining channel state information of the plurality of target beam pairs corresponding to the plurality of target beam pair information when the plurality of target beam pair information belong to the same beam group;

And determining the determined channel state information of the plurality of target beam pairs to the base station.

In a possible implementation manner, after receiving the indication information sent by the base station, after the indication information includes multiple target beam pair information, the method further includes:

When the plurality of target beam pair information does not belong to the same beam group, the N target beam pair information that belongs to the same beam group and whose transmission delays are less than or equal to the preset delay is selected from the plurality of target beam pair information. ;

Determining channel state information of N target beam pairs corresponding to the selected N target beam pair information;

Transmitting channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station.

In a possible implementation manner, the method further includes:

Determining whether a preset number of beam pair information exists in the multiple beam pair information belongs to the same beam group;

And when the preset number of beam pair information belongs to the same beam group, the preset number of beam pair information is sent to the base station, so that the base station is based on the preset The beam pair corresponding to the number of beam pairs achieves wide beam coverage.

A third aspect provides a data transmission synchronization apparatus, which is applied to a base station, where the apparatus includes:

a first determining module, configured to determine a plurality of target beam pair information from the plurality of beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes the first beam and the first a second beam, the first beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on a terminal side;

a second determining module, configured to determine, according to the multiple target beam pair information determined by the first determining module, a beam group to which each target beam pair belongs;

And a transmission module, configured to transmit data based on the plurality of target beam pairs according to the beam group to which each target beam pair is determined by the second determining module, to implement data transmission synchronization.

In a possible implementation, the device further includes:

And a receiving module, configured to receive packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.

In a possible implementation, the device further includes:

a third determining module, configured to determine a transmission delay of the beam pair for each of the plurality of beam pairs;

a grouping module, configured to group the multiple beam pairs based on a transmission delay of the multiple beam pairs determined by the third determining module;

a storage module, configured to store a correspondence between each beam pair information and the associated beam group after the grouping of the grouping module, and send packet information to the base station, where the group information includes each beam pair information and a group of associated beams Correspondence between the two.

In a possible implementation manner, the third determining module includes:

a sending submodule, configured to send a downlink reference signal to the terminal according to the first beam of the beam pair, and record a sending time point;

a first determining submodule, configured to determine a receiving time point when receiving the uplink reference signal sent by the terminal according to the second beam of the beam pair;

And a second determining submodule, configured to determine a difference between the receiving time point and the sending time point as a transmission delay of the beam pair.

In a possible implementation manner, the grouping module includes:

a third determining submodule, configured to determine a transmission delay difference between the two spatially adjacent pairs of the plurality of beam pairs;

a fourth determining submodule, configured to determine, according to the transmission delay difference between the two spatially adjacent pairs of beam pairs, where two beams are spatially adjacent in each beam group The transmission delay difference between the pairs is less than or equal to the preset threshold.

In a possible implementation, the transmission module includes:

a first transmission submodule, configured to: when the multiple target beam pairs belong to the same beam group, transmit data through the multiple target beam pairs; or

a second transmission submodule, configured to: when the plurality of target beam pairs do not belong to the same beam group, select N from the plurality of target beam pairs that belong to the same beam group and have a transmission delay less than or equal to a preset delay Target beam pairs and transmit data through the selected N target beam pairs.

In a possible implementation, the device further includes:

a fourth determining module, configured to determine a guard interval GP corresponding to the beam group to which the multiple target beam pairs belong when the data is transmitted in the time division duplex TDD mode, where the GP is positively correlated with the transmission delay;

And a configuration module, configured to perform TDD frame structure configuration on the data to be transmitted based on the determined GP.

A fourth aspect provides a data transmission synchronization apparatus, which is applied to a terminal, where the apparatus includes:

a first determining module, configured to determine, when the data is transmitted based on the multiple target beam pairs, whether the multiple target beam pairs belong to the same beam group, and each of the multiple target beam pairs includes the first a beam and a second beam, the first beam is generated by an antenna array on a base station side, and the second beam is generated by an antenna array on the terminal side;

And a transmitting module, configured to: when the first determining module determines that the multiple target beam pairs belong to the same beam group, transmit data through the multiple target beam pairs.

In a possible implementation, the device further includes:

a first receiving module, configured to receive, by the base station, a downlink reference signal that is sent according to a first beam of each beam pair;

a second determining module, configured to determine whether the respective beam pairs belong to the same beam group;

a first sending module, configured to send an uplink reference signal by using a second beam of each beam pair when the respective beam pairs belong to the same beam group;

a first determining module, configured to determine, when the respective beam pairs do not belong to the same beam group, two pairs of beams that are spatially adjacent to different beam groups;

The module is ignored for ignoring any one of the determined two beam pairs and transmitting an uplink reference signal through a second beam of each beam pair other than the ignored beam pair.

In a possible implementation, the device further includes:

a second determining module, configured to determine a plurality of transmission delay differences, where each of the multiple transmission delay differences refers to a second beam receiving downlink reference of two spatially adjacent pairs of beams The delay of transmission of the signal;

a grouping module, configured to group multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle, where the packet configuration principle is carried by the downlink reference signal;

a storage module, configured to store a correspondence between each beam pair information and a group of beam groups after the grouping system.

In a possible implementation, the device further includes:

a second receiving module, configured to receive indication information sent by the base station, where the indication information includes multiple target beam pair information;

a third determining module, configured to determine channel state information of multiple target beam pairs corresponding to the multiple target beam pair information when the multiple target beam pair information belongs to the same beam group;

And a second sending module, configured to send the determined channel state information of the multiple target beam pairs to the base station.

In a possible implementation, the device further includes:

a selection module, when the plurality of target beam pair information does not belong to the same beam group, select N from the plurality of target beam pair information that belong to the same beam group and whose transmission delay is less than or equal to a preset delay Target beam pair information;

a fourth determining module, configured to determine channel state information of the N target beam pairs corresponding to the selected N target beam pair information;

And a third sending module, configured to send channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station.

In a possible implementation, the device further includes:

a third determining module, configured to determine whether a preset number of beam pair information belongs to the same beam group in the multiple beam pair information;

a fourth sending module, configured to: when the preset number of beam pair information belongs to the same beam group, send the preset number of beam pair information to the base station, so that The base station implements wide beam coverage based on the beam pair corresponding to the preset number of beam pair information.

A fifth aspect provides a data transmission synchronization apparatus, which is applied to a base station, where the apparatus includes:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

The technical solution provided by the embodiment of the present disclosure has the beneficial effects of: determining, from the plurality of beam pair information, target beam pair information of a plurality of target beam pairs whose received power is greater than or equal to a preset received power, wherein each beam pair includes a base station. a first beam generated by the antenna array on the side and a second beam generated by the antenna array on the terminal side, and then determining a beam group to which the plurality of target beam pairs belong, and according to the determined target beam pairs that can be used for transmitting data In the case of the associated beam group, data is transmitted based on the plurality of target beam pairs, that is, the transmission delay difference between the plurality of target beam pairs for transmitting data is smaller than the length of the CP, that is, the transmission delay difference is ensured. Can be eliminated by the system, so that the transmitted data meets the synchronization requirements at the receiving end.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

FIG. 1A is a schematic diagram of an implementation environment according to an exemplary embodiment; FIG.

FIG. 1B exemplarily shows a schematic diagram of using a phase antenna array;

Figure 1C(1) exemplarily shows a uniform linear array;

Figure 1C (2) exemplarily shows a uniform square array;

FIG. 1D(1) exemplarily shows a schematic diagram of a beam;

FIG. 1D(2) exemplarily shows a schematic diagram of another beam;

FIG. 1E exemplarily shows a structure of beamforming of a non-interconnected hybrid radio frequency and baseband;

FIG. 1F exemplarily shows a structure of beamforming of interconnected hybrid radio frequency and baseband; FIG.

Figure 1G shows a system flow diagram of beamforming based on OFDM modulation;

Figure 1H shows a system flow diagram of signal processing at a corresponding receiving end;

FIG. 1K shows an example schematic diagram of communicating through a beam pair;

FIG. 2 is a flowchart of a data transmission synchronization method according to an exemplary embodiment;

FIG. 3 is a flowchart of a data transmission synchronization method according to another exemplary embodiment;

FIG. 4A is a flowchart of a data transmission synchronization method according to another exemplary embodiment; FIG.

4B is a schematic diagram of multiple beam pairs involved in the embodiment of FIG. 4A;

4C is a schematic diagram of different TDD configurations based on different beam groups involved in the embodiment of FIG. 4A;

4D is a schematic diagram of receiving an uplink reference signal according to the embodiment of FIG. 4A;

FIG. 5A is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment; FIG.

FIG. 5B is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 5C is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 5D is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 6A is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment; FIG.

FIG. 6B is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 6C is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 6D is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 6E is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment; FIG.

FIG. 6F is a schematic structural diagram of a data transmission synchronization apparatus according to another exemplary embodiment. Figure

FIG. 7 is a schematic structural diagram of a base station according to an exemplary embodiment;

FIG. 8 is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment.

detailed description

The embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

FIG. 1A is a schematic diagram of an implementation environment according to an exemplary embodiment. The implementation environment mainly includes a base station 110 and a terminal 120. The base station 110 can be used to provide a wireless network, and the terminal 120 can establish a communication connection with the base station 110 through the wireless network, and the base station 110 can transmit data with the terminal 110 through the established communication connection. In addition, the base station 110 side may be configured with an antenna array in which a beamforming technique may be used to generate a first beam having strong directivity, the first beam may be used for transmitting data, and further, the first The beam can be used to transmit a downlink reference signal to the terminal 120 and receive an uplink reference signal transmitted by the terminal 120.

The terminal 120 can be used to transmit data at least. The terminal 120 can be a terminal such as a mobile phone, which is not limited by the embodiment of the disclosure. Similarly, the terminal 120 side may also be configured with an antenna array, and a beamforming technique may also be used in the antenna array to generate a second beam with strong directivity, the second beam is used for transmitting data, and further, the The second beam can be used to send an uplink reference signal to the base station 110 and receive a downlink reference signal sent by the base station 110.

It should be noted that before the data transmission synchronization method provided by the embodiment of the present disclosure is introduced, the high-band communication using the beamforming technology is introduced here first. That is to say, in the high-band communication, since the wavelength under the high-band carrier is short, more antenna units can be disposed in the same size space, and therefore, a large-scale antenna array can be deployed in a limited space. With this feature, the beamforming method can obtain huge gains to overcome large path losses, which makes high-band ground mobile communication possible.

Wherein, beamforming using a large-scale antenna array refers to introducing a set of pre-designed phase differences into a closely arranged antenna array, and the beam shape of the antenna array can generate strong directivity. This directionality can be used to enhance the transmit or receive power of the signal in the target direction, and can also be used to suppress transmitted or received interference in uncorrelated directions. If both the transmitting end and the receiving end are equipped with such an antenna array, the enhancement of the signal or the suppression of the interference can obtain double gain, and therefore, in the embodiment of the present disclosure, the beamforming technique is simultaneously used at the base station and the terminal side. .

Next, the beamforming of the antenna array is introduced by taking FIG. 1B as an example. FIG. 1B exemplarily shows a schematic diagram using a phase antenna array. Figure 1B shows a beamformed structure using a phase antenna array in which the antenna elements in the antenna array are arranged in a linear manner. The received signal on each antenna element is added with a phase offset θ, and the phase deviation between each two antenna elements is equal. In this design, the beamformed structure can produce a stronger receive gain in a particular direction while the receive gain in other directions is small. This directionality can be described by a beam, and different beams can be obtained by calculating different phase weights.

In addition, in the actual implementation process, the arrangement method of the antenna array can include many types, and the simplest method is a uniform linear arrangement. This antenna array structure can produce directivity in a two-dimensional space. If the antenna array is arranged in a two-dimensional space, the generated beam has a three-dimensional directivity. Two arrays of antenna arrays are shown in Figure 1C: Figure 1C(1) is a uniform linear array and Figure 1C(2) is a uniform square array. It is assumed that the antenna elements in the antenna array are omnidirectional antenna elements, and correspondingly, the beams generated by the two antenna arrays are as shown in FIG. 1D. As can be seen from Figure 1D(1), a uniform linear array produces only directional beams in the horizontal dimension, as seen in Figure 1D(2), while a uniform square array produces directional beams in the three dimensional dimension. Since a uniform square array has more antenna elements, it produces a stronger gain in the center direction.

In addition to the antenna elements, there are a number of ways to achieve beamforming. Beamforming can be divided into analog beamforming and digital beamforming based on different methods of processing the signals. The analog beamforming achieves beamforming by generating different phase weights on each antenna element of the antenna array by performing phase rotation operations on the analog signals. In a communication system, analog beamforming can be implemented at different stages such as radio frequency, intermediate frequency or local oscillator.

Digital beamforming is performed by mathematically computing a digital signal to generate different phase and amplitude weights on each antenna of the antenna array to generate a corresponding beam. At the transmitting end, this operational processing needs to be done before the digital to analog conversion. At the receiving end, this operation is done after the analog to digital conversion. Digital beamforming is more flexible and powerful than analog beamforming. By different operations on digital signals, digital beamforming can generate multiple beams simultaneously, while analog beamforming can only produce one beam at a time. Using advanced digital signal processing technology, digital beamforming can estimate the angle of arrival of the signal, and even perform MIMO (Multiple-Input Multiple-Output) transmission, for example, STBC (Space Time Block Code) Transmission, SM (Spatial Multiplexing) transmission, etc.

However, despite the above benefits, digital beamforming requires multiple RF paths, so it is needed Higher system design complexity and corresponding costs. To this end, a beamforming method using digital and analog mixing has also been proposed. This hybrid structure can well balance the contradiction between complexity, cost and performance. For example, a baseband path can cascade a group of antenna elements, wherein the phase difference is achieved by an analog method between the antenna elements.

As shown in FIG. 1E, FIG. 1E exemplarily shows a beam-formed structure of a non-interconnected hybrid radio frequency and baseband, each baseband processing unit cascading a plurality of antenna elements, and the entire system has multiple baseband processing. unit. For the first baseband processing unit, the weight on each antenna can be represented by [w1, w2, w3, w4]. For the last baseband processing unit, the weight on each antenna can be represented by [wM-3, wM-2, wM-1, wM].

It should be noted that, under the above mixed structure, no antenna unit is shared between each baseband processing unit, and the system can independently control [w1, w2, w3, w4] and [wM-3, wM- 2, wM-1, wM].

Further, as shown in FIG. 1F, FIG. 1F exemplarily shows a structure of beamforming of interconnected hybrid radio frequency and baseband. In this configuration, each baseband signal shares each antenna element. That is to say, on each antenna unit, the baseband signals of all the paths are superimposed after passing the weighting.

In addition to the two methods described above, other beamforming methods are not described in detail in the present solution, but are considered as some basic variants of the present solution, and are applicable to the scenarios involved in the embodiments of the present disclosure.

Furthermore, in addition to the implementation of beamforming described above, the use of high frequency band carriers means that more abundant spectrum resources can be utilized. How to effectively utilize such rich spectrum resources is also the focus of communication system design. Therefore, the modulation technology will be briefly introduced here. One of the most efficient ways to utilize broadband resources is to use multi-carrier modulation techniques such as OFDM (Orthogonal Frequency Division Multiplexing), FBMC (Filter Bank Multi-Carrier), Filtered Modulation method such as OFDM (Filtered Orthogonal Frequency Division Multiplexing).

For example, please refer to FIG. 1G. FIG. 1G shows a system flowchart of beamforming based on OFDM modulation. In a possible implementation, the system may be the system of the terminal 120. The processing of the signal by the system is as follows: as shown in FIG. 1G, the complex signal modulated by the constellation point is first passed through a MIMO processing module, and then through the serial-to-parallel conversion module, the complex signal is converted into a signal vector, and the N point is utilized. The fast inverse Fourier transform module processes the signal vector. Then, a cyclic prefix is added to the signal vector in the cyclic prefix processing module, and then the added signal vector is parallel-to-serial converted by the parallel-to-serial conversion module. Further, the carrier processing module is used to convert the serial-to-serial converted signal vector into an analog signal, and a high-frequency carrier is added to obtain a radio frequency signal, and finally, the radio frequency signal is obtained. Send out through the antenna array.

It should be noted that the above-mentioned signals may be the uplink reference signal, the downlink reference signal, and the data to be transmitted, and the like, which are not limited herein.

The phase difference of the antenna array is generated according to the control of the transmitting end, thereby generating a required transmitting beam. Figure 1H shows a system flow diagram of the signal processing of the corresponding receiving end. The phase difference between the receiving antenna elements is generated according to the control of the receiving end, thereby generating a required receiving beam. The signal received by the antenna array is first down-converted by the carrier processing module and converted to a digital signal, and then the cyclic prefix is removed by the cyclic prefix processing module. After that, the system converts the serial signal into a parallel signal vector by using the serial-to-parallel conversion module, and processes the signal vector by using the N-point fast Fourier module. The signal vector is then passed through a parallel to serial conversion module and sent to the MIMO processing module. The MIMO processing module performs MIMO detection on the signal vector and sends it to the channel equalization module to obtain the final received signal. It should be noted that in the actual communication system, a channel coding and decoding module is also included, and FIG. 1F and FIG. 1H are not shown in detail.

As described above, in order to obtain maximum system throughput, in the embodiments of the present disclosure, it is necessary to use beamforming techniques at both the transmitting end and the receiving end. In practical applications, the beam pairs generated by the antenna arrays on the base station side and the terminal side need to be aligned, with the base station side as the transmitting end and the terminal side as the receiving end as an example, that is, the transmitting beam needs to be aligned with the receiving beam, and then the receiving is performed. The signal-to-noise ratio of the signal is maximized, that is, the high-band radio link is optimized by a pair of beams aligned with each other.

In a mobile communication scenario, this beam alignment can be accomplished by sending a training sequence. Through the training sequence, the optimal transmit beam and the optimal receive beam can be found, that is, the optimal first beam and second beam are found. Through a feedback channel, the receiving end can feed back the optimal transmit beam index to the transmitting end. The transmitting end then uses the beam for data transmission, and then the optimal receiving sequence obtained through the training sequence can be used for signal reception. At this point, a transmit and receive beam pair is established. For example, as shown in FIG. 1K, FIG. 1K shows an example schematic diagram of communicating through a beam pair. The beam pair (C, 2) is a set of beam pairs that can be used to transmit data after training.

FIG. 2 is a flowchart of a data transmission synchronization method according to an exemplary embodiment. The data transmission synchronization method may be applied to a base station. The data transmission synchronization method mainly includes the following implementation steps:

In step 201, a plurality of target beam pair information is determined from the plurality of beam pair information, and the received power of each target beam pair is greater than or equal to a preset received power, wherein each beam pair includes a first beam and a second beam. The first beam is generated by an antenna array on the base station side, and the second beam is generated by the terminal The antenna array on the side is generated.

In step 202, based on the plurality of target beam pair information, a beam group to which each target beam pair belongs is determined.

In step 203, data is transmitted based on the plurality of target beam pairs according to the beam group to which each target beam pair belongs to achieve data transmission synchronization.

In the embodiment of the present disclosure, the target beam pair information of the plurality of target beam pairs whose received power is greater than or equal to the preset received power is determined from the plurality of beam pair information, where each beam pair includes the antenna array generated by the base station side. a first beam and a second beam generated by the antenna array on the terminal side, and then determining a beam group to which the plurality of target beam pairs belong, and according to the determined beam group to which each target beam pair that can be used for transmitting data belongs Transmitting data based on the plurality of target beam pairs, that is, ensuring that a transmission delay difference between a plurality of target beam pairs for transmitting data is smaller than a length of the CP, that is, ensuring that the transmission delay difference can be eliminated by the system, thereby The transmitted data is synchronized at the receiving end.

In a possible implementation, before determining the beam group to which each target beam pair belongs based on the multiple target beam pair information, the method further includes:

Receiving packet information sent by the terminal, where the group information includes at least a correspondence between each target beam pair information and an associated beam group.

In another possible implementation, before determining the beam group to which each target beam pair belongs based on the multiple target beam pair information, the method further includes:

Determining a transmission delay of the beam pair for each of the plurality of beam pairs;

In another possible implementation manner, determining a transmission delay of the beam pair includes:

Determining a reception time point when receiving an uplink reference signal sent by the terminal based on the second beam of the beam pair;

The difference between the reception time point and the transmission time point is determined as the transmission delay of the beam pair.

In another possible implementation manner, the multiple beam pairs are grouped based on a transmission delay of the multiple beam pairs, including:

Determining a plurality of beam groups based on a difference in transmission delay between the two spatially adjacent pairs of beam pairs, The transmission delay difference between two spatially adjacent pairs of beam groups in each beam group is less than or equal to a preset threshold.

In another possible implementation manner, according to the beam group to which each target beam pair belongs, transmitting data based on the multiple target beam pairs includes:

When the plurality of target beam pairs do not belong to the same beam group, select N target beam pairs belonging to the same beam group and having a transmission delay less than or equal to a preset delay from the plurality of target beam pairs, and pass the selected N target beam pairs transmit data.

In another possible implementation manner, before the data is transmitted according to the multiple target beam pairs, according to the beam group to which each target beam pair belongs, the method further includes:

When the data is transmitted in the time division duplex TDD mode, the guard interval GP corresponding to the beam group to which the multiple target beam pairs belong is determined, and the GP is positively correlated with the transmission delay;

All of the above optional technical solutions may form an optional embodiment of the present disclosure in any combination, and the embodiments of the present disclosure will not be further described herein.

FIG. 3 is a flowchart of a data transmission synchronization method according to another exemplary embodiment. The data transmission synchronization method may be applied to a terminal, and the data transmission synchronization method may include the following implementation steps:

In step 301, when data is transmitted based on multiple target beam pairs, it is determined whether the plurality of target beam pairs belong to the same beam group, and each of the plurality of target beam pairs includes the first beam and the second A beam, the first beam is generated by an antenna array on the base station side, and the second beam is generated by the antenna array on the terminal side.

In step 302, when the plurality of target beam pairs belong to the same beam group, data is transmitted through the plurality of target beam pairs.

In the embodiment of the present disclosure, when data is transmitted based on multiple target beam pairs, it is determined whether the multiple target beam pairs belong to the same beam group, and each of the multiple target beam pairs includes the first beam and a second beam, where the first beam is a beam generated by the base station, and the second beam is a beam generated by the terminal. When the multiple target beam pairs belong to the same beam group, data is transmitted through the multiple target beam pairs, that is, the data is guaranteed. The propagation delay difference between multiple target beam pairs used to transmit data is less than the length of CP Degree, that is, to ensure that the transmission delay difference can be eliminated by the system, so that the transmitted data meets the synchronization requirements at the receiving end.

In a possible implementation manner, the method further includes:

Determining whether the respective beam pairs belong to the same beam group;

When the respective beam pairs belong to the same beam group, the uplink reference signal is sent through the second beam of each beam pair;

In another possible implementation, the downlink reference signal carries a packet configuration principle, and after receiving the downlink reference signal sent by the base station based on the first beam of each beam pair, the method further includes:

Determining a plurality of transmission delay differences, wherein each of the plurality of transmission delay differences refers to a transmission delay difference of the second beam received by the spatially adjacent two beam pairs;

And grouping multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle;

In another possible implementation manner, the method further includes:

Determining, by the plurality of target beam pair information, the channel state information of the plurality of target beam pairs corresponding to the plurality of target beam pair information;

The determined channel state information of the plurality of target beam pairs is transmitted to the base station.

In another possible implementation manner, after receiving the indication information sent by the base station, where the indication information includes multiple target beam pair information, the method further includes:

When the plurality of target beam pair information does not belong to the same beam group, the N target beam pair information that belongs to the same beam group and whose transmission delays are less than or equal to the preset delay is selected from the plurality of target beam pair information;

And transmitting the determined channel state information of the N target beam pairs corresponding to the N target beam pair information to the base station.

In another possible implementation manner, the method further includes:

Determining whether a preset number of beam pair information exists in the plurality of beam pair information belongs to the same beam group;

When the preset number of beam pair information belongs to the same beam group, the preset number of beam pair information is sent to the base station, so that the base station corresponds to the preset number of beam pair information. The beam pair achieves wide beam coverage.

FIG. 4A is a flowchart of a data transmission synchronization method according to another exemplary embodiment. The embodiment of the present disclosure is described by taking a base station to implement the data transmission synchronization method, and the data transmission synchronization method may include the following Implementation steps:

In step 401, a plurality of target beam pair information is determined from the plurality of beam pair information, and the received power of each target beam pair is greater than or equal to a preset received power, wherein each beam pair includes the first beam and the second beam. The first beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on the terminal side.

The preset receiving power may be customized by the user according to actual needs, or may be set by default by the base station, which is not limited by the embodiment of the disclosure.

As described above, in the embodiment of the present disclosure, multiple beam pairs are formed by using beamforming techniques on both the base station side and the terminal side to implement data transmission through high frequency band communication. Before the data is transmitted, multiple target beam pairs with better transmission performance are selected from multiple beam pairs that establish a link between the base station and the terminal.

Each of the plurality of beam pair information may be used to uniquely identify one beam pair. The specific implementation process of determining a plurality of target beam pair information from the plurality of beam pair information may include: for each of the plurality of beam pairs, based on the first beam of the beam pair, the base station receiving terminal is based on the An uplink reference signal sent by the second beam of the beam pair, after which the base station determines that the first beam of the beam pair receives the received power of the uplink reference signal, that is, determines the received power corresponding to the beam pair information. The greater the received power, the stronger the capability of the beam pair corresponding to the information received by the beam pair. Therefore, the base station selects the received power from the multiple beam pairs to be greater than or equal to the preset received power. Multiple target beam pairs, ie multiple target beam pairs are determined.

The uplink reference signal may be a long RAP (Random Access Preamble), or the uplink reference signal may be a short SRS (Sounding Reference Signal). This example does not limit this.

In addition, it should be noted that when the terminal sends an uplink reference signal to the base station based on each beam pair, it also needs to be determined according to the grouping situation of each beam pair. For details, refer to step 405 below.

In step 402, based on the plurality of target beam pair information, a beam group to which each target beam pair belongs is determined.

In a possible implementation manner, the determined transmission delay difference between the multiple target beam pairs may be relatively large. In this case, if the data is transmitted through the multiple target beam pairs, the transmission is easily caused. Data cannot be synchronized at the receiving end. To this end, after the base station determines a plurality of target beam pair information from the plurality of beam pair information, it is necessary to determine a beam group to which the plurality of target beam pair information belongs.

In a practical implementation, in a possible implementation manner, the correspondence between each beam pair information and the associated beam group can be determined and maintained by the base station. Of course, in another possible implementation manner, each beam pair is used. The correspondence between the information and the associated beam group may also be determined and maintained by the terminal, and the foregoing is based on the plurality of target beam pairs according to determining and maintaining an execution subject of the correspondence between the respective beam pair information and the belonging beam group. For information, determining the beam group to which each target beam pair belongs may include the following possible implementations:

The first method is: receiving packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.

That is, in this manner, after the terminal determines the packet information including the correspondence between the respective target beam pair information and the associated beam group, the packet information is synchronized to the base station, so that the base station can be based on The determined plurality of target beam pair information determines a beam group to which each target beam pair belongs.

That is, in the above implementation manner, the grouping information is maintained by the terminal, wherein the process of determining the grouping information by the terminal may include: receiving a packet configuration principle carried by the downlink reference signal, and determining a plurality of transmission delay differences, Each of the plurality of transmission delay differences is a transmission delay difference of the second beam received by the second beam pair of the spatially adjacent ones, based on the plurality of transmission delays And the packet configuration principle, grouping the plurality of beam pairs, storing the correspondence between each group of beam pair information and the associated beam group, and transmitting the group information to the base station, where the group information includes each beam pair information and Correspondence between the group of beams to which they belong.

The packet configuration principle may include a preset threshold and/or a number of packets, where the number of packets refers to how many groups the multiple beam pairs can be divided, and the number of packets may be determined by the base station.

That is, the base station transmits a downlink reference signal to the terminal based on the first beam of each of the plurality of beam pairs, and accordingly, the terminal receives the second beam based on each of the plurality of beam pairs. Each downlink reference signal, and in the process of receiving each downlink reference signal, determining a reception time difference between two spatially adjacent pairs of beams, the reception time difference being two spatially adjacent two beams The delay between transmissions between pairs.

The process of grouping multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle includes: determining, by the terminal, whether a transmission delay difference between two spatially adjacent pairs of beams is Less than or equal to a preset threshold in the group configuration principle, when the transmission delay difference between two spatially adjacent pairs of beams is less than or equal to a preset threshold, the two beam pairs are grouped into one group, and Continue to perform the above judgment operation.

For example, please refer to FIG. 4B. FIG. 4B is a schematic diagram of multiple beam pairs involved in the embodiment of FIG. 4A. If spatially adjacent multiple beam pairs are (A, 0), (B, 1), (C , 2) and (E, 3), and the transmission delay between (A, 0) and (B, 1) is greater than a preset threshold, then the (A, 0) and (B, 1) are divided into two Groups, if the transmission delay between the (B, 1) and (C, 2) is less than or equal to the preset threshold, the (B, 1) and (C, 2) are grouped into one group, if If the transmission delay between (C, 2) and (E, 3) is less than or equal to the preset threshold, the (E, 3) is divided into the beams to which (B, 1) and (C, 2) belong. In the group.

It should be noted that, in the foregoing implementation process, the terminal may continuously update the grouping situation of each beam pair according to the downlink reference signal sent by the base station.

In addition, it should be noted that, in the embodiment of the present disclosure, the implementation manner of grouping multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle is merely exemplary, in another In an embodiment, the transmission delay difference between the multiple beam pairs may also be traversed to compare multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle. The disclosed embodiments do not limit this.

The second mode is: determining, for each of the plurality of beam pairs, a transmission delay of the beam pair, grouping the multiple beam pairs based on the transmission delay of the multiple beam pairs, and storing the grouped packets Correspondence between each beam pair information and the associated beam group.

In this implementation, the multiple pairs of beam pairs are grouped by the base station, that is, the base station maintains the correspondence between the respective beam pair information and the associated beam group.

The foregoing process for determining a transmission delay of the beam pair includes: transmitting a downlink reference signal to the terminal according to the first beam of the beam pair, and recording a transmission time point, when receiving the second location of the terminal based on the beam pair When the uplink reference signal is sent by the beam, the receiving time point is determined, and the difference between the receiving time point and the sending time point is determined as the transmission delay of the beam pair.

The grouping the multiple beam pairs based on the transmission delays of the multiple beam pairs includes: determining a transmission delay difference between two pairs of spatially adjacent pairs of the plurality of beam pairs, according to Determining a transmission delay difference between two spatially adjacent pairs of beam pairs, wherein a plurality of beam groups are determined, wherein a difference in transmission delay between two spatially adjacent pairs of beam groups in each beam group is smaller than Or equal to the preset threshold.

In this implementation manner, the implementation process of grouping the multiple beam pairs is similar to the terminal side based on multiple transmission delay differences, and will not be explained in detail herein.

In addition, when the base station determines and maintains the correspondence between the respective beam pair information and the associated beam group, the base station may also synchronize the correspondence between the respective beam pair information and the associated beam group to the terminal, that is, the base station stores After the correspondence between the respective beam pair information and the associated beam group, the packet information carrying the correspondence between the respective beam pair information and the associated beam group is transmitted to the terminal.

It can be seen that for the base station and the terminal, no matter who determines the group information, the synchronization is performed after the determination. That is, regardless of which of the above implementations, the base station can determine the beam group to which each target beam pair information belongs. Therefore, it is not difficult to understand that for the terminal, the beam group to which the respective target beam pair information belongs can also be determined at any time.

It should be noted that, when actually transmitting data, since the base station needs to perform determination and scheduling of data transmission according to channel state information, after determining the beam group to which each target beam pair belongs in multiple target beam pairs, based on Before the multiple target beam pairs transmit data, the base station also needs to know channel state information of the multiple target beam pairs, for example, the channel state information includes a precoding matrix and a rank. Generally, the terminal is responsible for feeding back the channel state information to the base station. Therefore, in a possible implementation manner, after determining the multiple target beam pairs, the base station sends indication information to the terminal, where the indication information includes multiple target beams. For information, the indication information is used to instruct the terminal to measure and feed back channel state information of the multiple target beam pairs.

Correspondingly, the terminal receives the indication information sent by the base station, and since the terminal may always be in the mobile state, when the terminal moves, the grouping situation of the multiple target beam pairs may also be changed, and therefore, the indication is fed back to the base station. Before the channel state information corresponding to the plurality of target beam pair information carried in the information, it may be determined whether the plurality of target beam pair information belong to the same beam group.

That is, the terminal receives the indication information sent by the base station, and determines whether the multiple target beam pair information is Determining the plurality of target beam pairs, when the plurality of target beam pair information belongs to the same beam group, determining channel state information of the plurality of target beam pairs corresponding to the plurality of target beam pair information, and determining the plurality of target beam pairs The channel state information is sent to the base station.

That is, only when the terminal determines that the multiple target beam pair information belongs to the same beam group, the channel state information of the multiple target beam pairs is fed back to the base station.

For example, referring to FIG. 4B, if the multiple target beam pair information is (B, 1) and (C, 2), since the (B, 1) and (C, 2) belong to the same beam group, the terminal measurement The channel state information of the two target beam pairs and the channel state information of the two target beam pairs are sent to the base station, that is, the rank determined at this time is 2, which means that dual stream transmission can be used.

On the other hand, when the plurality of target beam pair information does not belong to the same beam group, the N target beam pair information that belongs to the same beam group and whose transmission delays are less than or equal to the preset delay is selected from the plurality of target beam pair information. And determining channel state information of the N target beam pairs corresponding to the selected N target beam pair information, and transmitting channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station, where N is greater than or equal to 1.

The preset delay may be customized by the user according to actual needs, or may be set by default by the terminal, which is not limited by the embodiment of the disclosure.

For example, if the plurality of target beam pair information includes (A, 0) and (B, 1), since the (A, 0) and (B, 1) do not belong to the same beam group, and (B, 1) corresponds to The transmission delay of the target beam pair is short. Therefore, when the terminal feeds back the channel state information, the terminal feeds back the channel state information corresponding to the (B, 1) to the base station, that is, the terminal generates only one single-stream transmission mode, and indicates the base station to use. (B, 1) The beam pair transmits data, ie (A, 0) is automatically discarded.

In addition, in practical applications, in order to improve transmission efficiency, the base station may also dynamically adjust the beamwidth, that is, use less antenna elements for wider beamforming, or combine several narrow beams for joint transmission. In this case, in the embodiment of the present disclosure, when the multiple beam pairs are also required to belong to the same beam group, the base station can perform beam width adjustment.

That is, the terminal determines whether a preset number of beam pair information belongs to the same beam group in the plurality of beam pair information, and if the preset number of beam pair information belongs to the same beam group in the multiple beam pair information, The preset number of beam pair information is sent to the base station, so that the base station implements wide beam coverage based on the beam pair corresponding to the preset number of beam pair information.

The preset number may be customized by the user according to actual needs, or may be set by default by the terminal, which is not limited by the embodiment of the disclosure.

That is, in actual application, the terminal needs to detect packet information of a preset number of beam pairs. When the multiple beam pairs do not belong to the same beam group, the wide beam that covers the preset number cannot be used for transmission, that is, the base station cannot use. Multiple narrow beams that do not belong to the same beam group achieve wide beam coverage.

After determining a plurality of target beam pairs and channel state information of the plurality of target beam pairs, data may be transmitted based on the plurality of target beam pairs, wherein a TDD (TimeDivisionDuplex) mode is used before data is transmitted. When the data is transmitted, the frame structure of the data to be transmitted is also configured. The configuration mode is different according to the beam group to which the information belongs to the multiple target beam pairs. For details, refer to steps 403 and 404.

In step 403, when data is transmitted using the TDD mode, a guard interval GP corresponding to the beam group to which the plurality of target beam pairs belong is determined, and the GP is positively correlated with the transmission delay.

In step 404, a TDD frame structure configuration is performed on the data to be transmitted based on the determined GP.

As described above, the transmission delays are different for different beam groups. Therefore, different beam groups correspond to different GPs (Guard Periods), that is, the GPs in each TDD frame structure need to be used by the data. The beam set of the beam pair used is determined. The larger the transmission delay, the longer the value of the GP is. Please refer to FIG. 4C. FIG. 4C is a schematic diagram of different TDD configurations based on different beam groups involved in the embodiment of FIG. 4A, that is, when there is a large transmission. For extended beam group 2, a longer GP needs to be configured. Conversely, for a beam group 1 with a shorter transmission delay, a shorter GP can be configured.

It is not difficult to understand that when the beam group to which the beam is used changes, the TDD frame structure needs to be configured for the data to be transmitted, that is, the configuration of the TDD frame structure needs to be determined according to the beam group in which the beam pair is used.

In step 405, data is transmitted based on the plurality of target beam pairs according to the beam group to which the respective target beam pair belongs to achieve data transmission synchronization.

The data transmission based on the multiple target beam pairs may include the following possible implementation manners according to the beam groups to which the target beam pairs belong:

The first mode: when the multiple target beam pairs belong to the same beam group, data is transmitted through the multiple target beam pairs.

In the data transmission process, the base station may schedule multi-stream spatial multiplexing for data transmission, or may use MIMO hierarchical transmission. For example, in the case of scheduling multi-stream spatial multiplexing for data transmission, in the high-band communication, since the beamforming can obtain a very narrow beam, the system can realize a multi-stream transmission in a very simple manner. When the plurality of target beam pairs can establish enough between the base station and the terminal For a good link, each target beam pair can transmit a separate stream of information, enabling multi-stream transmission. That is to say, in the embodiment of the present disclosure, when a plurality of target beam pairs belong to the same beam group, multi-stream transmission can be scheduled.

In addition, it should be noted that, as described above, since the terminal may be in a mobile state, the multiple target beam pairs may not belong to the same beam group. In this case, if the base station also uses the multiple targets. The beam pair sends data to the terminal, which may not meet the synchronization requirement. Therefore, for the terminal, before receiving the data transmitted by the base station, the terminal needs to determine whether the multiple target beam pairs belong to the same beam group.

That is, when data is transmitted based on multiple target beam pairs, it is determined whether the plurality of target beam pairs belong to the same beam group, and each of the plurality of target beam pairs includes the first beam and the second beam. The first beam is a beam generated by the base station, and the second beam is a beam generated by the terminal. When the multiple target beam pairs belong to the same beam group, data is transmitted through the multiple target beam pairs.

As described above, the terminal can always monitor the situation of the beam group to which each beam pair belongs. Therefore, the terminal can determine whether the multiple target beam pairs belong to the same beam group. If the multiple target beam pairs do not belong to the same beam group, the terminal will automatically discard the data transmitted by the target beam pair that does not belong to the same beam group, that is, select one or more target beam pairs belonging to the same beam group for data transmission.

Before receiving the data, the terminal determines whether the multiple target beam pairs belong to the same beam group, and when the multiple target beam pairs belong to the same beam group, the data is transmitted through the multiple target beam pairs, thereby improving data transmission synchronization. accuracy.

The second mode: when the multiple target beam pairs do not belong to the same beam group, select N target beam pairs that belong to the same beam group and whose transmission delay is less than or equal to the preset delay. And transmitting data through the selected N target beam pairs.

That is, in the embodiment of the present disclosure, after determining the multiple target beam pairs, it is also required to determine whether the multiple target beam pairs belong to the same beam group, and if the multiple target beam pairs belong to the same beam group, The plurality of target beam pairs transmit data.

That is, when the plurality of target beam pairs do not belong to the same beam group, the base station is required to select N target beam pairs belonging to the same beam group from the plurality of target beam pairs, in order to be fast and high in the selection process. Efficiently transmitting data, the base station selects N target beam pairs whose transmission delay is less than or equal to a preset delay from the plurality of target beam pairs, so that transmission of data through the selected N target beam pairs can not only ensure transmission The data arrives at the receiving end to achieve synchronization requirements, and, because the transmission delay is small, the data transmission rate is also increased.

In addition, as described above, when the terminal transmits an uplink reference signal to the base station, it also needs to transmit according to the grouping situation of the multiple beam pairs.

That is, the receiving, by the base station, the downlink reference signals sent by the first beam of each beam pair, determining whether the respective beam pairs belong to the same beam group, and when the respective beam pairs belong to the same beam group, sending the second beam through the respective beam pairs. An uplink reference signal, when the respective beam pairs do not belong to the same beam group, determine two beam pairs that belong to different beam groups and are spatially adjacent, ignore any one of the determined two beam pairs, and pass The uplink reference signal is transmitted by the second beam of each beam pair except the ignored beam pair.

That is, based on the transmission time of the uplink reference signal transmitted by each beam pair, the reception time of the downlink reference signal may be determined, and the second beam used by the uplink reference signal may use the second beam that receives the downlink reference signal. That is to say, the transmission of the uplink reference signal is associated with the reception of the downlink reference signal. Since the receiving time of the downlink reference signal varies with the beam pair used, the time of the uplink reference signal transmission also needs to consider this time difference.

When the transmission delay difference between the two target beam pairs is large, the use of the associated method for uplink reference signal transmission will cause a collision. The uplink reference signal may use a ZC sequence-based design, and different uplink reference signals may be distinguished by using different cyclic shifts. When the transmission time error of the two uplink reference signals is large, the base station cannot correctly distinguish the two uplink reference signals, that is, the received power of the target beam pair that receives the two uplink reference signals cannot be determined.

In an embodiment, the terminal determines the group of beams to which the plurality of beam pairs belong, and then the terminal detects the group information of the used beam pair before transmitting the uplink reference signal. If the two beam pairs belong to different beam groups, the terminal automatically discards two consecutive uplink reference signal transmissions. If two beam pairs belong to the same beam group, the terminal may send an uplink reference signal on an adjacent time resource.

Based on this transmission mode, the base station side can avoid receiving the conflicting uplink reference signal sequence. As shown in FIG. 4D, FIG. 4D is a schematic diagram of receiving an uplink reference signal according to the embodiment of FIG. 4A. The base station sequentially uses the beams B1 to B6 to transmit downlink reference signals. The uplink reference signal is then sent back to the base station through the same beam. Here, it is assumed that B1 to B3 belong to the same beam group, and B4 to B6 belong to another beam group. At this time, since B4 is at the boundary of the two beam groups, the terminal ignores B4, that is, the transmission of B4 is abandoned.

Please continue to refer to FIG. 4D, which shows the uplink reference signal received by the base station side. At this time, the pilot using B3 and the pilot using B4 overlap in time, and the coincidence portion is larger than the protection interval of the cyclic shift. Separate. That is to say, if the terminal sends the uplink reference signal of B4 after transmitting the B3, the two will collide at the base station side. Since the synchronization group based transmission method is implemented, the base station avoids receiving two conflicting uplink reference signals. Therefore, the base station can smoothly detect the corresponding uplink reference signals of B1 to B3 and B5 to B6.

It should be noted that the description is made only by ignoring B4 as an example. In the actual implementation process, B3 may also be omitted, which is not limited by the embodiment of the present disclosure.

FIG. 5A is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment. The data transmission synchronization apparatus may be implemented by software, hardware, or a combination of both. The data transmission synchronization apparatus includes:

The first determining module 510 is configured to determine, from the plurality of beam pair information, a plurality of target beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes the first beam and a second beam, the first beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on the terminal side;

a second determining module 512, configured to determine, according to the multiple target beam pair information determined by the first determining module, a beam group to which each target beam pair belongs;

The transmission module 514 is configured to transmit data based on the plurality of target beam pairs according to the beam group to which the respective target beam pair determined by the second determining module, to implement data transmission synchronization.

In a possible implementation manner, referring to FIG. 5B to FIG. 5D, the apparatus further includes:

The receiving module 516 is configured to receive packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.

In another possible implementation manner, the device further includes:

a third determining module 518, configured to determine a transmission delay of the beam pair for each of the plurality of beam pairs;

The grouping module 520 is configured to group the multiple beam pairs based on the transmission delays of the multiple beam pairs determined by the third determining module.

The storage module 522 is configured to store a correspondence between each beam pair information grouped by the grouping module and the associated beam group.

In another possible implementation manner, the third determining module 518 includes:

a first determining submodule, configured to determine a receiving time point when receiving the uplink reference signal sent by the terminal based on the second beam of the beam pair;

The second determining submodule is configured to determine a difference between the receiving time point and the sending time point as a transmission delay of the beam pair.

In another possible implementation manner, the grouping module 520 includes:

a fourth determining submodule, configured to determine, according to the transmission delay difference between the two spatially adjacent pairs of beam pairs, wherein the two beam groups are spatially adjacent to each of the beam groups The transmission delay difference between them is less than or equal to a preset threshold.

In another possible implementation, the transmission module 514 includes:

a first transmission submodule, configured to transmit data through the multiple target beam pairs when the multiple target beam pairs belong to the same beam group; or

a second transmission submodule, configured to: when the plurality of target beam pairs do not belong to the same beam group, select N targets belonging to the same beam group and having a transmission delay less than or equal to a preset delay Beam pairs and transmit data through the selected N target beam pairs.

In another possible implementation manner, the device further includes:

The fourth determining module 524 is configured to: when using the time division duplex TDD mode to transmit data, determine a guard interval GP corresponding to the beam group to which the multiple target beam pairs belong, and the GP is positively related to the transmission delay;

The configuration module 526 is configured to perform TDD frame structure configuration on the data to be transmitted based on the determined GP.

In the embodiment of the present disclosure, the target beam pair information of the plurality of target beam pairs whose received power is greater than or equal to the preset received power is determined from the plurality of beam pair information, where each beam pair includes the antenna array generated by the base station side. The first beam and the second beam generated by the antenna array on the terminal side, after that, Determining a beam group to which the plurality of target beam pairs belong, and transmitting data based on the plurality of target beam pairs according to the determined beam group of each target beam pair that can be used for transmitting data, that is, guaranteeing for transmitting data The transmission delay difference between multiple target beam pairs is smaller than the length of the CP, that is, the transmission delay difference can be eliminated by the system, so that the transmitted data reaches the synchronization requirement at the receiving end.

FIG. 6A is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment. The data transmission synchronization apparatus may be implemented by software, hardware, or a combination of both. The data transmission synchronization apparatus includes:

The first determining module 610 is configured to determine, when the data is transmitted based on the multiple target beam pairs, whether the multiple target beam pairs belong to the same beam group, and each of the multiple target beam pairs includes the first beam And a second beam, the first beam is generated by an antenna array on the base station side, and the second beam is generated by the antenna array on the terminal side;

The transmitting module 612 is configured to: when the first determining module determines that the multiple target beam pairs belong to the same beam group, transmit data through the multiple target beam pairs.

In a possible implementation manner, referring to FIG. 6B to FIG. 6F, the apparatus further includes:

The first receiving module 614 is configured to receive, by the base station, a downlink reference signal that is sent according to the first beam of each beam pair;

The second determining module 616 is configured to determine whether the respective beam pairs belong to the same beam group.

The first sending module 618 is configured to: when the respective beam pairs belong to the same beam group, send an uplink reference signal by using the second beam of each beam pair;

a first determining module 620, configured to determine, when the respective beam pairs do not belong to the same beam group, two pairs of beams that are spatially adjacent to different beam groups;

The ignoring module 622 is configured to ignore any one of the determined two beam pairs and transmit an uplink reference signal through a second beam of each beam pair other than the ignored beam pair.

In another possible implementation manner, the device further includes:

a second determining module 624, configured to determine a plurality of transmission delay differences, where each of the multiple transmission delay differences refers to a second beam receiving downlink reference of two spatially adjacent pairs of beams The delay of transmission of the signal;

a grouping module 626, configured to group multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle, where the packet configuration principle is carried by the downlink reference signal;

The storage module 628 is configured to store a pair of the paired beam pair information and the associated beam group. Corresponding to, and sending packet information to the base station, the packet information includes a correspondence between each beam pair information and an associated beam group.

In another possible implementation manner, the device further includes:

The second receiving module 630 is configured to receive indication information sent by the base station, where the indication information includes multiple target beam pair information;

a third determining module 632, configured to determine channel state information of multiple target beam pairs corresponding to the multiple target beam pair information when the multiple target beam pair information belongs to the same beam group;

The second sending module 634 is configured to send the determined channel state information of the multiple target beam pairs to the base station.

In another possible implementation manner, the device further includes:

The selecting module 636 is configured to select, from the plurality of target beam pair information, N that belong to the same beam group and whose transmission delays are less than or equal to a preset delay, when the plurality of target beam pair information does not belong to the same beam group. Target beam pair information;

a fourth determining module 638, configured to determine channel state information of the N target beam pairs corresponding to the selected N target beam pair information;

The third sending module 640 is configured to send channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station.

In another possible implementation manner, the device further includes:

The third determining module 642 is configured to determine whether a preset number of beam pair information belongs to the same beam group in the multiple beam pair information.

The fourth sending module 644 is configured to: when the preset number of beam pair information belongs to the same beam group, send the preset number of beam pair information to the base station, so that the base station is based on the The beam pair corresponding to the preset number of beam pair information achieves wide beam coverage.

In the embodiment of the present disclosure, when data is transmitted based on multiple target beam pairs, it is determined whether the multiple target beam pairs belong to the same beam group, and each of the multiple target beam pairs includes the first beam and a second beam, where the first beam is a beam generated by the base station, and the second beam is a beam generated by the terminal. When the multiple target beam pairs belong to the same beam group, data is transmitted through the multiple target beam pairs, that is, the data is guaranteed. The transmission delay difference between multiple target beam pairs for transmitting data is smaller than the length of the CP, that is, the transmission delay difference can be eliminated by the system, so that the transmitted data reaches the synchronization requirement at the receiving end.

FIG. 7 is a schematic structural diagram of a base station according to an exemplary embodiment, which can implement a data transmission synchronization method provided by the present disclosure. The base station includes a transmitter 732, a receiver 731, a memory 733, and a processor 734 coupled to the transmitter 732, the receiver 731, and the memory 733, respectively, wherein the processor 734 is configured to perform the following steps:

Determining a plurality of target beam pair information from the plurality of beam pair information, wherein the received power of each target beam pair is greater than or equal to a preset received power, wherein each beam pair includes a first beam and a second beam, the first beam Generated by the antenna array on the base station side, the second beam is generated by the antenna array on the terminal side;

Data is transmitted based on the plurality of target beam pairs by the transmitter 732 according to the beam groups to which the respective target beam pairs belong to achieve data transmission synchronization.

In one possible implementation, the processor 734 is configured to:

The packet information sent by the terminal is received by the receiver 731, and the packet information includes at least a correspondence between each target beam pair information and the associated beam group.

In another possible implementation, the processor 734 is configured to:

The corresponding relationship between the grouped beam pair information and the associated beam group is stored by the memory 733.

In another possible implementation, the processor 734 is configured to:

Transmitting, by the transmitter 732, a downlink reference signal to the terminal based on the first beam of the beam pair, and recording a transmission time point;

In another possible implementation, the processor 734 is configured to:

Determining a plurality of beam groups according to a transmission delay difference between the two spatially adjacent pairs of beam pairs, wherein a difference in transmission delay between two spatially adjacent pairs of beam groups in each beam group is Less than or equal to the preset threshold.

In another possible implementation, the processor 734 is configured to:

FIG. 8 is a schematic structural diagram of a data transmission synchronization apparatus according to an exemplary embodiment. For example, device 800 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a gaming console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to Figure 8, device 800 can include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, And a communication component 816.

Processing component 802 typically controls the overall operation of device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 802 can include one or more processors 820 to execute instructions to perform all or part of the steps of the above described methods. Moreover, processing component 802 can include one or more modules to facilitate interaction between component 802 and other components. For example, processing component 802 can include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

Memory 804 is configured to store various types of data to support operation at device 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phone book data, messages, pictures, videos, and the like. The memory 804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable. Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.

Power component 806 provides power to various components of device 800. Power component 806 can include a power management system, one or more power supplies, and others that are capable of generating, managing, and distributing power for device 800. Associated components.

The multimedia component 808 includes a screen between the device 800 and the user that provides an output interface. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor may sense not only the boundary of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input an audio signal. For example, the audio component 810 includes a microphone (MIC) that is configured to receive an external audio signal when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting an audio signal.

The I/O interface 812 provides an interface between the processing component 802 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

Sensor assembly 814 includes one or more sensors for providing device 800 with a status assessment of various aspects. For example, sensor assembly 814 can detect an open/closed state of device 800, relative positioning of components, such as the display and keypad of device 800, and sensor component 814 can also detect a change in position of one component of device 800 or device 800. The presence or absence of user contact with device 800, device 800 orientation or acceleration/deceleration, and temperature variation of device 800. Sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 816 is configured to facilitate wired or wireless communication between device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, communication component 816 receives from the outside via a broadcast channel Broadcast the broadcast signal or broadcast related information of the system. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, device 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation for performing the above methods.

In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium comprising instructions, such as a memory 804 comprising instructions executable by processor 820 of apparatus 800 to perform the above method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

A non-transitory computer readable storage medium that, when executed by a processor of a mobile terminal, enables the mobile terminal to perform the data transmission synchronization method of the embodiment illustrated in FIGS. 3 and 4A.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above description is only the preferred embodiment of the present disclosure, and is not intended to limit the disclosure. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and principles of the present disclosure, should be included in the protection of the present disclosure. Within the scope.

Claims

A data transmission synchronization method is characterized in that it is applied to a base station, and the method includes:

And determining, by the plurality of beam pair information, a plurality of target beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes a first beam and a second beam, where the first a beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on a terminal side;

Determining, according to the plurality of target beam pair information, a beam group to which each target beam pair belongs;

Data is transmitted based on the plurality of target beam pairs according to the beam group to which each target beam pair belongs to achieve data transmission synchronization.
The method according to claim 1, wherein the determining, before the determining the beam group to which each target beam pair belongs based on the plurality of target beam pair information, further comprises:

Receiving packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.
The method according to claim 1, wherein the determining, before the determining the beam group to which each target beam pair belongs based on the plurality of target beam pair information, further comprises:

Determining a transmission delay of the beam pair for each of a plurality of beam pairs;

And grouping the plurality of beam pairs based on transmission delays of the multiple beam pairs;

The correspondence between each group of beam pair information and the associated beam group is stored.
The method of claim 3, wherein the determining a transmission delay of the beam pair comprises:

Transmitting a downlink reference signal to the terminal based on the first beam of the beam pair, and recording a transmission time point;

Determining a reception time point when receiving the uplink reference signal sent by the terminal based on the second beam of the beam pair;

A difference between the reception time point and the transmission time point is determined as a transmission delay of the beam pair.
The method according to claim 3 or 4, wherein the grouping the plurality of beam pairs based on a transmission delay of the plurality of beam pairs comprises:

Determining a transmission delay difference between two spatially adjacent pairs of the plurality of beam pairs;

Determining a plurality of beam groups according to a transmission delay difference between the two spatially adjacent pairs of beam beams, wherein a difference in transmission delay between two spatially adjacent pairs of beam groups in each beam group is determined All are less than or equal to the preset threshold.
The method according to claim 1, wherein the transmitting data based on the plurality of target beam pairs according to the beam group to which each target beam pair belongs includes:

Transmitting data through the plurality of target beam pairs when the plurality of target beam pairs belong to the same beam group; or

When the plurality of target beam pairs do not belong to the same beam group, select N target beam pairs belonging to the same beam group and having a transmission delay less than or equal to a preset delay, and pass through the plurality of target beam pairs. The selected N target beam pairs transmit data.
The method according to claim 6, wherein the transmitting, according to the beam group to which the respective target beam pair belongs, before the data is transmitted based on the plurality of target beam pairs, further comprises:

Determining, by using a time division duplex TDD mode, a guard interval GP corresponding to a beam group to which the plurality of target beam pairs belong, the GP being positively correlated with a transmission delay;

The TDD frame structure configuration is performed on the data to be transmitted based on the determined GP.
A data transmission synchronization method is characterized in that it is applied to a terminal, and the method includes:

Determining whether the plurality of target beam pairs belong to the same beam group when the data is transmitted based on the plurality of target beam pairs, and each of the plurality of target beam pairs includes the first beam and the second beam, The first beam is generated by an antenna array on the base station side, and the second beam is generated by the antenna array on the terminal side;

When the plurality of target beam pairs belong to the same beam group, data is transmitted through the plurality of target beam pairs.
The method of claim 8 wherein the method further comprises:

Receiving, by the base station, a downlink reference signal that is sent according to a first beam of each beam pair;

Determining whether the respective beam pairs belong to the same beam group;

When the respective beam pairs belong to the same beam group, the uplink reference signal is sent by the second beam of each beam pair;

Determining two beam pairs that belong to different beam groups and are spatially adjacent when the respective beam pairs do not belong to the same beam group;

Any one of the determined two beam pairs is ignored and the uplink reference signal is transmitted by a second beam of each beam pair other than the ignored beam pair.
The method according to claim 9, wherein the downlink reference signal carries a packet configuration principle, and after the receiving, by the base station, the downlink reference signal sent by the first beam of each beam pair, the method further includes:

Determining a plurality of transmission delay differences, wherein each of the plurality of transmission delay differences refers to a transmission delay difference of the second beam receiving downlink reference signals of the two spatially adjacent pairs of the beam pairs;

And grouping a plurality of beam pairs based on the plurality of transmission delay differences and the packet configuration principle;

The correspondence between each group of beam pair information and the associated beam group is stored, and the group information is sent to the base station, where the group information includes a correspondence between each beam pair information and the associated beam group.
The method of claim 8 wherein the method further comprises:

Receiving indication information sent by the base station, where the indication information includes multiple target beam pair information;

Determining channel state information of the plurality of target beam pairs corresponding to the plurality of target beam pair information when the plurality of target beam pair information belong to the same beam group;

And determining the determined channel state information of the plurality of target beam pairs to the base station.
The method according to claim 11, wherein the receiving the indication information sent by the base station, after the indication information includes a plurality of target beam pair information, further comprising:

When the plurality of target beam pair information does not belong to the same beam group, the N target beam pair information that belongs to the same beam group and whose transmission delays are less than or equal to the preset delay is selected from the plurality of target beam pair information. ;

Determining channel state information of N target beam pairs corresponding to the selected N target beam pair information;

Transmitting channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station.
The method of claim 8 wherein the method further comprises:

Determining whether a preset number of beam pair information exists in the multiple beam pair information belongs to the same beam group;

And when the preset number of beam pair information belongs to the same beam group, the preset number of beam pair information is sent to the base station, so that the base station is based on the preset The beam pair corresponding to the number of beam pairs achieves wide beam coverage.
A data transmission synchronization device is characterized in that it is applied to a base station, and the device includes:

a first determining module, configured to determine a plurality of target beam pair information from the plurality of beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes the first beam and the first a second beam, the first beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on a terminal side;

a second determining module, configured to determine, according to the multiple target beam pair information determined by the first determining module, a beam group to which each target beam pair belongs;

And a transmission module, configured to transmit data based on the plurality of target beam pairs according to the beam group to which each target beam pair is determined by the second determining module, to implement data transmission synchronization.
The device of claim 14 wherein said device further comprises:

And a receiving module, configured to receive packet information sent by the terminal, where the packet information includes at least a correspondence between each target beam pair information and an associated beam group.
The device of claim 14 wherein said device further comprises:

a third determining module, configured to determine a transmission delay of the beam pair for each of the plurality of beam pairs;

a grouping module, configured to group the multiple beam pairs based on a transmission delay of the multiple beam pairs determined by the third determining module;

And a storage module, configured to store a correspondence between each beam pair information and the associated beam group after the grouping of the grouping module.
The apparatus of claim 16, wherein the third determining module comprises:

a sending submodule, configured to send a downlink reference signal to the terminal according to the first beam of the beam pair, and record a sending time point;

a first determining submodule, configured to determine a receiving time point when receiving the uplink reference signal sent by the terminal according to the second beam of the beam pair;

And a second determining submodule, configured to determine a difference between the receiving time point and the sending time point as a transmission delay of the beam pair.
The device according to claim 16 or 17, wherein the grouping module comprises:

a third determining submodule, configured to determine a transmission delay difference between the two spatially adjacent pairs of the plurality of beam pairs;

a fourth determining submodule, configured to determine, according to the transmission delay difference between the two spatially adjacent pairs of beam pairs, where two beams are spatially adjacent in each beam group The transmission delay difference between the pairs is less than or equal to the preset threshold.
The device of claim 14, wherein the transmission module comprises:

a first transmission submodule, configured to: when the multiple target beam pairs belong to the same beam group, transmit data through the multiple target beam pairs; or

a second transmission submodule, configured to: when the plurality of target beam pairs do not belong to the same beam group, select N from the plurality of target beam pairs that belong to the same beam group and have a transmission delay less than or equal to a preset delay Target beam pairs and transmit data through the selected N target beam pairs.
The device of claim 19, wherein the device further comprises:

a fourth determining module, configured to determine a guard interval GP corresponding to the beam group to which the multiple target beam pairs belong when the data is transmitted in the time division duplex TDD mode, where the GP is positively correlated with the transmission delay;

And a configuration module, configured to perform TDD frame structure configuration on the data to be transmitted based on the determined GP.
A data transmission synchronization device is characterized in that it is applied to a terminal, and the device includes:

a first determining module, configured to determine, when the data is transmitted based on the multiple target beam pairs, whether the multiple target beam pairs belong to the same beam group, and each of the multiple target beam pairs is included a first beam and a second beam, the first beam is generated by an antenna array on a base station side, and the second beam is generated by an antenna array on the terminal side;

And a transmitting module, configured to: when the first determining module determines that the multiple target beam pairs belong to the same beam group, transmit data through the multiple target beam pairs.
The device of claim 21, wherein the device further comprises:

a first receiving module, configured to receive, by the base station, a downlink reference signal that is sent according to a first beam of each beam pair;

a second determining module, configured to determine whether the respective beam pairs belong to the same beam group;

a first sending module, configured to send an uplink reference signal by using a second beam of each beam pair when the respective beam pairs belong to the same beam group;

a first determining module, configured to determine, when the respective beam pairs do not belong to the same beam group, two pairs of beams that are spatially adjacent to different beam groups;

The module is ignored for ignoring any one of the determined two beam pairs and transmitting an uplink reference signal through a second beam of each beam pair other than the ignored beam pair.
The device of claim 22, wherein the device further comprises:

a second determining module, configured to determine a plurality of transmission delay differences, where each of the multiple transmission delay differences refers to a second beam receiving downlink reference of two spatially adjacent pairs of beams The delay of transmission of the signal;

a grouping module, configured to group multiple beam pairs based on the multiple transmission delay differences and the packet configuration principle, where the packet configuration principle is carried by the downlink reference signal;

a storage module, configured to store a correspondence between each group of beam pair information and an associated beam group, and send packet information to the base station, where the group information includes a correspondence between each beam pair information and an associated beam group. .
The device of claim 21, wherein the device further comprises:

a second receiving module, configured to receive indication information sent by the base station, where the indication information includes multiple target beam pair information;

a third determining module, configured to determine channel state information of multiple target beam pairs corresponding to the multiple target beam pair information when the multiple target beam pair information belongs to the same beam group;

And a second sending module, configured to send the determined channel state information of the multiple target beam pairs to the base station.
The device of claim 24, wherein the device further comprises:

a selection module, when the plurality of target beam pair information does not belong to the same beam group, select N from the plurality of target beam pair information that belong to the same beam group and whose transmission delay is less than or equal to a preset delay Target beam pair information;

a fourth determining module, configured to determine channel state information of the N target beam pairs corresponding to the selected N target beam pair information;

And a third sending module, configured to send channel state information of the N target beam pairs corresponding to the determined N target beam pair information to the base station.
The device of claim 21, wherein the device further comprises:

a third determining module, configured to determine whether a preset number of beam pair information belongs to the same beam group in the multiple beam pair information;

a fourth sending module, configured to: when the preset number of beam pair information belongs to the same beam group, send the preset number of beam pair information to the base station, so that The base station implements wide beam coverage based on the beam pair corresponding to the preset number of beam pair information.
A data transmission synchronization device is characterized in that it is applied to a base station, and the device includes:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

And determining, by the plurality of beam pair information, a plurality of target beam pair information, where the received power of each target beam pair is greater than or equal to a preset received power, where each beam pair includes a first beam and a second beam, where the first a beam is generated by an antenna array on the base station side, and the second beam is generated by an antenna array on a terminal side;

Determining, according to the plurality of target beam pair information, a beam group to which each target beam pair belongs;

Data is transmitted based on the plurality of target beam pairs according to the beam group to which each target beam pair belongs to achieve data transmission synchronization.
A data transmission synchronization device is characterized in that it is applied to a terminal, and the device includes:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Determining whether the plurality of target beam pairs belong to the same beam group when the data is transmitted based on the plurality of target beam pairs, and each of the plurality of target beam pairs includes the first beam and the second beam, The first beam is generated by an antenna array on the base station side, and the second beam is generated by the antenna array on the terminal side;

When the plurality of target beam pairs belong to the same beam group, data is transmitted through the plurality of target beam pairs.