WO2019109483A1

WO2019109483A1 - Communication method and device

Info

Publication number: WO2019109483A1
Application number: PCT/CN2018/073485
Authority: WO
Inventors: 李伟丹; 黄锦华; 杨波; 胡应添
Original assignee: 京信通信系统（中国）有限公司; 京信通信系统（广州）有限公司; 京信通信技术(广州)有限公司; 天津京信通信系统有限公司
Priority date: 2017-12-06
Filing date: 2018-01-19
Publication date: 2019-06-13
Also published as: CN108155927A; CN108155927B

Abstract

A communication method and device. The method comprises: a base station transmitting M training signals in N beam directions, where M and N are positive integers greater than 1, and M is greater than or equal to N; the base station receiving a first random access message transmitted by the terminal, and determining a beam direction of the first random access message to be a first beam direction of the terminal; and the base station transmitting a first random access response message to the terminal in the first beam direction.

Description

Method and device for communication

The present application claims the priority of the Chinese Patent Application, which is filed on Dec. 6, 2017, the entire disclosure of which is hereby incorporated by reference. .

Technical field

The present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.

Background technique

With the rapid development of mobile communications, the number of users of various types of mobile terminals has been increasing, resulting in an explosive growth of mobile Internet and high-bandwidth data services. Mobile services are increasingly demanding the spectrum efficiency of wireless communications.

A method for improving spectrum efficiency is a multi-antenna technology, that is, a plurality of antennas are configured for a base station. Since different service data required by different user terminals in a cell of a base station are different, the base station can perform beamforming on data carried by the traffic channel (Beam Forming) , BF), obtain the traffic channel beams of different user terminals, and then use multiple antennas to transmit the traffic channel beam direction to each user terminal, effectively utilizing the spatial irrelevance of the channel.

In the prior art, when the base station performs beamforming, the complexity is high, and the base station and the terminal cannot adaptively align the beam, so that the interference in the common frequency or the pre-frequency spectrum of the covered cell and the surrounding area is severe, and the spectrum quality is poor.

Therefore, how to reduce the signal transmission interference of the distributed base station system and improve the spectrum quality is an urgent problem to be solved.

Summary of the invention

The present application provides a method and apparatus for communication, which can be used to achieve adaptive beam alignment between a base station and a terminal, reduce the complexity of base station beamforming, reduce signal transmission interference of a base station, and improve spectrum quality.

An embodiment of the present application provides a method for communication, where the method includes:

The terminal receives M training signals sent by the base station in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N;

Determining, by the terminal, the first beam direction according to the M training signals;

The terminal sends a first random access message to the base station in a first beam direction; the terminal receives a first random access response message sent by the base station in the first beam direction.

In a possible implementation, the terminal determines the first beam direction according to the M training signals, including:

Determining, by the terminal, an average signal quality of each of the N beam directions according to the M training signals;

The terminal determines a beam direction with the best average signal quality among the N beam directions as the first beam direction.

In a possible implementation manner, the terminal determines, according to the M training signals, an average signal quality of each of the N beam directions, including:

Determining, by the terminal, k signal qualities corresponding to k training signals in any one of the N beam directions, where k is a positive integer smaller than M;

The terminal determines an average or a weighted average of the k signal qualities as an average signal quality or a weighted average signal quality of the corresponding beam direction.

Determining, by the terminal, a signal quality of each of the M training signals to obtain M signal qualities;

And determining, by the terminal, a beam direction corresponding to the training signal with the best signal quality among the M signal qualities as the first beam direction.

In a possible implementation manner, the signal quality is determined according to any one of a received power, a signal to noise ratio, and a carrier to noise ratio of the training signal.

a possible implementation manner, after the terminal receives the first random access response message sent by the base station in the first beam direction, the method further includes:

The terminal sends an uplink data packet to the base station in the first beam direction; or the terminal receives the downlink data packet sent by the base station in the first beam direction.

A possible implementation manner, after the terminal sends the first random access message to the base station in the first beam direction, the method further includes:

And if the terminal does not receive the first random access response message within a preset time threshold, resending the first random access message;

The terminal still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times, and then reselects the base station access, where the F is a positive integer greater than 1.

A possible implementation manner, after the determining, by the terminal, the first beam direction according to the M training signals, the method further includes:

Determining, by the terminal, the second beam direction according to the K training signals sent by the received N beam directions; the frame number of the radio frame where the K training signals are located in the frame number of the radio frame where the M training signals are located after that;

If the terminal determines that the second beam direction is different from the first beam direction, the terminal sends a second random access message to the base station in the second beam direction; or

If the terminal determines that the second beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset threshold, the terminal sends a second random in the second beam direction. Access message

The terminal receives the second random access response message sent by the base station in the second beam direction.

An embodiment of the present application provides a device for communication, where the device includes:

The transceiver unit is configured to receive M training signals sent by the base station in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N;

a processing unit, configured to determine a first beam direction according to the M training signals;

The transceiver unit is configured to send a first random access message to the base station in a first beam direction, where the receiving unit is further configured to receive, in the first beam direction, a first random Access response message.

A possible implementation manner, the processing unit is specifically configured to:

Determining, according to the M training signals, an average signal quality of each of the N beam directions; determining a beam direction with the best average signal quality among the N beam directions as the first beam direction.

Determining k signal qualities corresponding to k training signals in any one of the N beam directions, wherein k is a positive integer less than M; an average or weighted average of the k signal qualities Determined as the average signal quality or weighted average signal quality for the corresponding beam direction.

Determining a signal quality of each of the M training signals to obtain M signal qualities; determining a beam direction corresponding to a training signal having the best signal quality among the M signal qualities as the first beam direction .

A possible implementation manner, the transceiver unit is specifically configured to:

And sending an uplink data packet to the base station in the first beam direction; or receiving a downlink data packet sent by the base station in the first beam direction.

a possible implementation manner, if the transceiver unit does not receive the first random access response message within a preset time threshold, resending the first random access message;

If the transceiver unit still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times, the processing unit reselects the base station access, where the F is A positive integer greater than one.

Determining, according to the received K training signals, the second beam direction; the frame number of the radio frame where the K training signals are located is after the frame number of the radio frame where the M training signals are located;

And if the second beam direction is different from the first beam direction, the transceiver unit is configured to send a second random access message to the base station in the second beam direction; in the second beam direction. Receiving a second random access response message sent by the base station; or

And if the second beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset threshold, the transceiver unit is configured to send a second random in the second beam direction. And accessing the message; receiving, in the second beam direction, a second random access response message sent by the base station.

M training signals sent by the base station in the N beam directions; the M, N are positive integers greater than 1, and M is greater than or equal to N;

Receiving, by the base station, the first random access message sent by the terminal, determining a beam direction of the first random access message as a first beam direction of the terminal;

The base station sends a first random access response message to the terminal in the first beam direction.

In a possible implementation, after the base station sends the first random access response message to the terminal in the first beam direction, the method further includes:

Receiving, by the base station, an uplink data packet sent by the terminal in the first beam direction; or

The base station sends a downlink data packet to the terminal in the first beam direction.

In a possible implementation manner, the beam direction of the first random access message is the same as the beam direction of the training sequence of the radio frame where the first random access message is located.

In a possible implementation manner, each of the M training signals includes a transmission frame number of the training signal, and a frame number of the initial transmission radio frame corresponding to the beam direction of the training signal and a continuous frame number of the corresponding beam direction of the training signal. .

Receiving, by the base station, a second random access message sent by the terminal;

Determining, by the base station, a beam direction corresponding to the second random access message as a second beam direction of the terminal;

If the base station determines that the second beam direction is different from the first beam direction, sending a second random access response message to the terminal in the second beam direction, and in the second beam direction Data transmission with the terminal.

a transceiver unit, configured to transmit M training signals in N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N; the first random access message sent by the receiving terminal;

a processing unit, configured to determine a beam direction of the first random access message as a first beam direction of the terminal;

The transceiver unit is configured to send a first random access response message to the terminal in the first beam direction.

In a possible implementation manner, the transceiver unit is configured to receive an uplink data packet sent by the terminal in the first beam direction, or send a downlink to the terminal in the first beam direction. Data message.

a possible implementation manner, the transceiver unit is further configured to receive a second random access message sent by the terminal;

The processing unit is configured to determine a beam direction corresponding to the second random access message as a second beam direction of the terminal; if it is determined that the second beam direction is different from the first beam direction, The transceiver unit sends a second random access response message to the terminal in the second beam direction, and performs data transmission with the terminal in the second beam direction.

The embodiment of the present application provides a computer program product, comprising computer readable instructions, when a computer reads and executes the computer readable instructions, such that the computer performs the method of any one of the above.

The embodiment of the present application provides a chip connected to a memory for reading and executing a software program stored in the memory to implement the methods in various possible designs in any of the above.

Embodiments of the present application provide a communication apparatus having a function of a network device or a terminal behavior in a method for implementing any of the foregoing communications, including steps or functions described in a method for performing any of the foregoing communications. Corresponding parts (means). The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.

In one possible design, the communication device described above includes one or more processors and transceiver units. The one or more processors are configured to support the communication device to perform corresponding functions in the methods described above. For example, a synchronization signal is generated. The transceiver unit is configured to support the communication device to communicate with other devices to implement a receiving/transmitting function. For example, a synchronization signal generated by the processor or the like is transmitted.

Optionally, the communication device may further include one or more memories for coupling with the processor, which store program instructions and data necessary for the communication device. The one or more memories may be integrated with the processor or may be separate from the processor, and the present application is not limited thereto.

The communication device may be a base station or a Transmission Reception Point (TRP), etc., and the communication unit may be a transceiver or a transceiver circuit.

The communication device may also be a communication chip that can be disposed in the network device. The communication unit may be an input/output circuit or interface of a communication chip.

The communication device may be a terminal, and the terminal may be a cellular phone, a handheld terminal, a notebook computer or other devices that can access the network, a drone device, a smart home device, an in-vehicle device, etc., and the communication unit may be Transceiver, or transceiver circuit.

The communication device may also be a communication chip that can be disposed in the terminal. The communication unit may be an input/output circuit or interface of a communication chip.

In another possible design, the above communication device includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the communication device performs the network device or terminal completion in any of the above-described synchronization signal transmission methods Methods.

In the embodiment of the present application, the base station sends M training signals in the N beam directions; the base station receives the first random access message sent by the terminal in the first beam direction; the first beam direction is the terminal according to the terminal Determining the received training signal in the N beam directions; the base station transmitting a first random access response message to the terminal in the first beam direction. The technical solution in the embodiment of the present application implements adaptive beam alignment between the base station and the terminal, effectively reduces beamforming complexity and system overhead, reduces signal transmission interference in the internal or surrounding spectrum of the cell, and improves spectrum quality.

DRAWINGS

FIG. 1 is a schematic flowchart diagram of a method for communication according to an embodiment of the present application;

2 is a schematic structural diagram of a communication method in a specific embodiment of the present application;

3 is a schematic structural diagram of a communication device in a specific embodiment of the present application;

4 is a schematic structural diagram of a communication device in a specific embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application; FIG.

FIG. 6 is a schematic structural diagram of a communication apparatus in a specific embodiment of the present application.

Detailed ways

Various aspects are described herein in connection with user equipment and/or network side equipment. The network side device is, for example, a base station.

The user equipment may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The wireless terminal can also be referred to as a system, a Subscriber Unit, a Subscriber Station, and a mobile terminal. Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal, Access Terminal, User Terminal, User User Agent, User Device, or User Equipment.

A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Base Transceiver Station (BTS) in CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.

In the embodiment of the present application, the base station may include an antenna array composed of multiple antenna elements. By adjusting the weighted amplitude and phase of the RF signal transmitted by each antenna element in the antenna array, the shape of the radiation pattern of the RF signal emitted by the antenna array can be adjusted, so that the signal in a specific direction can be transmitted to the terminal according to the specific orientation of the terminal. Directional signals to reduce interference.

At present, beamforming is mainly performed on both the base station side and the terminal side. For the downlink direction, the base station sends a downlink beam training signal, and the terminal measures the downlink beam training signal, selects the best base station transmission beam direction, and feeds the beam direction related information to the base station, and selects the corresponding optimal receiving beam direction. Save it locally. In the uplink direction, the terminal sends an uplink beam training signal, and the base station measures the uplink beam training signal, selects the optimal terminal transmission beam direction, transmits the beam direction related information to the terminal, and selects the corresponding optimal receiving beam direction, and saves the local. Data transmission can be performed after the uplink and downlink transmission and reception beam directions are trained. In the prior art, the optimal transmit beam direction and the receive beam direction are selected, and the base station frequently needs to send the training signal to the terminal to complete the uplink and downlink transmit and receive beam training, and the beamforming complexity and system overhead are large. Unnecessary waste of resources.

Therefore, the embodiment of the present application provides a communication method, as shown in FIG. 1, including the following steps:

Step 101: M training signals sent by the base station in N beam directions;

Wherein M, N are positive integers greater than 1, and M is greater than or equal to N;

Step 102: The base station receives a first random access message sent by the terminal, and determines a beam direction of the first random access message as a first beam direction of the terminal.

Step 103: The base station sends a first random access response message to the terminal in the first beam direction.

In the embodiment of the present application, one or more terminals may be included in the coverage of the base station, and the base station may communicate with any terminal in the coverage of the base station by performing the method flow in the foregoing steps 101 to 103.

In step 101, the base station transmits M training signals in N beam directions, and transmits at least one training signal in each beam direction. The specific content of the training signal is not limited in this embodiment. For example, the training signal may be a pilot signal, or may be a cell reference signal, and the details are not described herein.

In a possible implementation manner, the base station may send according to the following manner:

The M training signals corresponding to the N beam directions may be sent in a polling manner. For any one of the N beam directions, the frame number of the beam direction and the continuous frame number of the beam direction may be sent for the first time. Determine according to actual needs. Each of the M training signals includes a transmission frame number of the training signal, and a frame number of the first transmission radio frame corresponding to the beam direction of the training signal and a continuous frame number corresponding to the beam direction of the training signal. For example, the base station can transmit the training signal to the three beam directions, and the training signal to the K+1th frame training signal is transmitted from the beam direction 1 in the Kth frame, and the training signal to the K+5 frame training signal in the K+2 frame frame. The beam direction 2 is transmitted, and the training signal from the K+6th frame to the K+9th frame is transmitted from the beam direction 3. At this time, the number of consecutive frames in the beam direction 1 is 2 frames, the number of consecutive frames in the beam direction 2 is 4 frames, and the number of consecutive frames in the beam direction 3 is 4 frames. If the current time is the K+3 frame, according to the K+3 frame training signal, the frame number of the first transmission in the beam direction 1 is the Kth frame, the number of the continuous frame is 2 frames, and the frame number of the first transmission in the beam direction 2 is The K+2 frame has a continuous frame number of 4 frames; the frame number of the first transmission in the beam direction 3 is the K+6 frame, and the continuous frame number is 4 frames; the beam direction of the current frame K+3 frame can be determined as the beam direction 2 And a beam direction corresponding to the M training signals.

After the step 101, the terminal determines a first beam direction according to the M training signals; the terminal sends a first random access message to the base station in a first beam direction;

Step 1: The terminal determines an average signal quality of each of the N beam directions according to the M training signals.

Step 2: The terminal determines a beam direction with the best average signal quality among the N beam directions as the first beam direction.

In the first step, a possible implementation manner includes the following steps:

Step 1: The terminal determines, according to the M training signals, a frame number that is initially transmitted in each of the N beam directions and each of the N beam directions from the M training signals. Number of consecutive frames;

Step 2: The terminal determines a training signal corresponding to each beam direction according to a frame number initially transmitted in each of the N beam directions and a continuous frame number in each of the N beam directions. Signal quality;

Specifically, for any one of the N beam directions, the terminal determines k signal qualities corresponding to k training signals, where the k training signals are the M training signals, and the terminal is from the The training signal received in the beam direction, k is greater than 0 and less than M.

Step 3: Determine the average signal quality of each beam direction according to the signal quality of the training signal in each beam direction.

In step 3, in a possible implementation manner, the terminal determines an average value of the k signal qualities as an average signal quality of the beam direction.

In the embodiment of the present application, the signal quality is determined according to any one or any of a received power, a signal to noise ratio, and a carrier-to-interference ratio of the training signal. For example, the signal quality is the received power of the received training signal, or the signal quality is the signal-to-noise ratio of the received training signal, or the signal quality is the carrier-to-noise ratio of the received training signal, or the signal quality is received. The weighting values of at least two of the received power, the signal-to-noise ratio, and the carrier-to-interference ratio of the training signal are not described herein.

For example, the signal quality is taken as an example of the received power of the received training signal. If the received power of the three training signals in the beam direction 2 received by the terminal are: 6 mW, 4 mW, 7 mW, 8 mW, the average received power of the beam direction 2 is 6.25 mW, based on this. Then, it can be determined that the signal quality corresponding to each beam direction is 6.25 mW.

In step three, one possible implementation includes:

For any one of the N beam directions, the terminal determines k signal qualities corresponding to k training signals and frame numbers of radio frames of k training signals.

For the training signal of the k training signals, the terminal weights the signal quality of the training signal by using a weighting value corresponding to the frame number of the radio frame of the training signal, to obtain a weighted signal quality of the training signal. The terminal determines a weighted average of the k signal qualities as a weighted average signal quality of the beam direction, where the k training signals are received by the terminal from the beam direction in the M training signals Training signal, k is greater than 0 and less than M.

For example, the signal quality is taken as an example of the received power of the received training signal. If the received power of the four training signals in the beam direction 2 received by the terminal is: the received power of the K+2 frame is 6 milliwatts, and the received power of the K+3 frame is 4 milliwatts, the K+4 The received power of the frame is 7 mW, and the received power of the K+5 frame is 5 mW. The average signal quality of the beam direction 2 can be determined according to the weighted average. For example, the weight of the K+2 frame is 0.1. The weighted value of the K+3 frame is 0.2, the weight of the K+2 frame is 0.3, and the weight of the K+2 frame is 0.4, and the weighted average signal quality of the beam direction 2 is 5.5 milliwatts. Based on the same manner, the weighted average signal quality corresponding to each beam direction in the N beam directions can be determined.

In step 102, a possible implementation manner includes:

Step 1: The terminal determines the signal quality of the training signal corresponding to each beam direction according to the first transmitted frame number and the continuous frame number corresponding to each beam direction of the N beam directions.

In a specific implementation process, the terminal may perform one-by-one analysis according to the received M training signals to determine signal quality of the M training signals.

Step 2: The terminal determines the first beam direction according to the signal quality of the M training signals.

In the second step, a possible implementation manner may include:

For example, the signal quality may specifically be a received power value. If the terminal receives 4 training signals, the received power of the first training signal is 6 milliwatts, the receiving power of the second training signal is 4 milliwatts, and the third training signal The received power of the fourth training signal is 8 milliwatts, and the terminal uses the beam direction corresponding to the fourth training signal as the first beam direction.

The signal quality may specifically be any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.

Determining a training signal with the best signal quality according to any one of the received power, the signal-to-noise ratio, and the carrier-to-interference ratio of the received signal received by the terminal, and using the beam direction corresponding to the training signal as the first beam direction . In a possible implementation manner, after determining, by the terminal, the first beam direction, the terminal sends a first random access message to the base station in a first beam direction. The first random access message may be a first message sent by the terminal association process, the re-association process, the initial access process, and the re-access procedure to the base station.

In a possible implementation manner, if the first beam direction is based on a beam direction corresponding to a training signal with the best signal quality among the M training signals, the frame corresponding to the training signal is used as the The moment when the terminal sends the first random access message to the base station.

For example, the signal quality is specifically a received power value. If the terminal receives 4 training signals, the received power of the first training signal is 6 milliwatts, the receiving power of the second training signal is 4 milliwatts, and the third training signal The received power of the fourth training signal is 8 milliwatts, and the terminal uses the beam direction corresponding to the fourth training signal as the first beam direction. The frame where the fourth training signal is located is the Kth frame, and the K+L*n frame is used as the moment when the terminal sends the first random access message to the base station. The L is a continuous frame number in which the base station transmits a complete beam direction, and n is a positive integer greater than or equal to 0.

In a possible implementation manner, if the terminal determines an average signal quality of each of the N beam directions according to the M training signals, the terminal averages an average signal quality among the N beam directions. The good beam direction is determined as the first beam direction, and the terminal may send the frame corresponding to any training signal in the continuous frame number corresponding to the first beam direction as the terminal to send the first to the base station. The moment of random access to the message; or,

The terminal may use, as the time when the terminal sends the first random access message to the base station, the frame corresponding to the training signal with the best signal quality among the k training signals in the first beam direction.

For example, taking the signal quality as the received power of the received training signal, if the received power of the training signal of the beam direction 2 received by the terminal is: 6 milliwatts, 4 milliwatts, 7 milliwatts, 8 milliwatts. The average received power of beam direction 2 is 6.25 mW. If it is determined that the average signal quality of the beam direction 2 is the best among the N beam directions, any one of the K+2+L*n frame to the K+5+L*n frame may be used as the The moment when the terminal sends the first random access message to the base station. Alternatively, the terminal uses a frame of the training signal corresponding to 8 milliwatts as a time when the terminal sends the first random access message to the base station. The L is a continuous frame number in which the base station transmits a complete beam direction, and n is a positive integer greater than or equal to 0.

In a possible implementation manner, the manner in which the terminal determines the weighted average signal quality of the beam direction is that for any one of the N beam directions, the terminal weights the k signal quality in any one of the beam directions. The average value is determined as the average signal quality of the beam direction, and the frame time of the corresponding training signal with the best weighted signal quality in the determined first beam direction is used as the terminal to send the first random access to the base station. The moment of the message.

For example, taking the signal quality as the received power of the received training signal, if the received power of the training signal of the beam direction 2 received by the terminal is: the received power of the training signal of the K+2 frame is 6 milliwatts. The receiving power of the K+3 frame training signal is 4 milliwatts, the receiving power of the K+4 frame training signal is 7 milliwatts, and the receiving power of the K+5 frame training signal is 5 milliwatts. If it is determined that the average signal quality of the beam direction 2 is the best among the N beam directions, the K+5+L*n frame is used as the time when the terminal sends the first random access message to the base station. The L is a continuous frame number in which the base station transmits a complete beam direction, and n is a positive integer greater than or equal to 0.

In step 105, the beam direction of the first random access message is the same as the beam direction of the training sequence of the radio frame in which the first random access message is located. Therefore, the base station may determine, according to a beam direction where the first random access message is located, a beam direction in which the terminal selects to access the base station.

In step 106, the base station responds to the first random access message, and confirms that the terminal can access the base station in a first beam direction where the first random access message is located, and The terminal sends the first random access response message.

The technical solution in the embodiment of the present application implements adaptive beam alignment between the base station and the terminal, reduces signal transmission interference in the internal or surrounding spectrum of the cell, and improves spectrum quality.

After receiving the first random access response message, the base station establishes a communication process with the terminal, and performs data transmission with the base station in the first beam direction to send and receive data packets. . In a possible implementation, after the base station sends the first random access response message to the terminal in the first beam direction, the method further includes:

The base station may determine, according to a beam direction corresponding to the first random access message sent by the terminal, a beamforming parameter corresponding to the first beam direction. The beamforming parameter is specifically a weighting coefficient of amplitude and/or phase of a signal transmitted by each antenna element when the base station performs beamforming on the terminal. Since the method of calculating the beamforming parameters belongs to the prior art, the calculation process will not be specifically described herein.

Then, the base station performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and sends the beamformed downlink data to the terminal.

Specifically, a possible implementation manner is: the base station performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and performs discrete Fourier transform and cyclic prefix addition processing to form a base station. The multi-antenna data matched by each antenna is sent, and the processed downlink data packet of the terminal is sent to the terminal.

Receiving, by the terminal, a downlink data packet sent by the base station in the first beam direction; or

The terminal sends an uplink data packet to the base station in the first beam direction.

The terminal still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times, and then reselects the base station access; the F is greater than 1.

The preset time threshold may be determined according to actual application scenarios and actual needs.

In a specific implementation process, the method for the terminal to reselect the access of the base station may re-initiate the access according to a preset condition until the system selects another base station to access the service, where the preset condition includes a backoff time window length and a random factor. Other ways, no longer repeat them here.

In an embodiment of the present application, after the base station sends the first random access response message to the terminal in the first beam direction, the terminal receives the M training signals in the N beam directions, if the terminal determines that the beam direction corresponding to the best signal quality changes, the random access message is sent to the base station again in the beam direction corresponding to the best signal quality.

In the specific implementation process, the following steps may be included:

Step 1: The terminal determines a second beam direction according to the K training signals sent by the received N beam directions. The frame number of the radio frame where the K training signals are located is in the radio frame where the M training signals are located. After the frame number; the K is a positive integer greater than one;

The method for determining the second beam direction is the same as the method for determining the first beam direction, and details are not described herein again.

Step 2: If the terminal determines that the beam direction corresponding to the best signal quality changes, the terminal sends a random access message to the base station in the reselected beam direction.

In a possible implementation, if the terminal determines that the second beam direction is different from the first beam direction, sending, by the terminal, the second random access message in the second beam direction;

In a possible implementation manner, if the terminal determines that the second beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset threshold, the terminal is in the foregoing Sending a second random access message in the direction of the two beams;

The preset threshold may be determined according to an actual application scenario and actual needs.

Step 3: The terminal sends a second random access message.

Step 4: The base station determines a beam direction corresponding to the second random access message as a second beam direction of the terminal, and sends a second random access to the terminal in the second beam direction. Response message

Step 5: The terminal receives the second random access response message, and performs data transmission with the base station in the second beam direction.

As shown in FIG. 2, the embodiment of the present application provides a schematic diagram of a communication method. The base station in the communication method includes two beam directions, a beam direction 1 and a beam direction 2. A possible implementation manner, the terminal 0 accessing the base station includes the following steps:

Step 1: The base station sends three training signals in two beam directions in a broadcast manner;

Step 2: The terminal 0 determines that the base station includes the beam direction 1 and the beam direction 2 according to any one of the three training signals received in the two beam directions, and the frame number of the first transmission of the beam direction 1 is the first K frame, the number of consecutive frames is 1 frame; the frame number of the first transmission of beam direction 2 is the K+1 frame, and the number of continuous frames is 2 frames;

Step 3: The terminal 0 determines the first beam direction according to the signal quality of the three training signals.

Step 4: Terminal 0 sends a first random access message to the base station in the first beam direction.

The terminal 0 determines that the three training signals are a first training signal, a second training signal, and a third training signal. The first training signal corresponds to the beam direction 1 and corresponds to the Kth frame; the second training signal corresponds to the beam direction 2, corresponding to the K+1 frame; the third training signal corresponds to the beam direction 2, corresponding to the K+2 frame.

If the terminal 0 determines that the signal quality of the first training signal is the best, the beam direction 1 is determined as the first beam direction, and the first random access message is sent to the base station on the K+3n frame, where n is A positive integer greater than or equal to 0.

If terminal 0 determines that the average signal quality of the second training signal and the third training signal of the beam direction 2 is greater than the signal quality of the first training signal corresponding to the beam direction 1, the terminal may be at the K+1+3n frame or the K+2 Sending a first random access message to the base station on a +3n frame; or if determining an average signal quality of the second training signal and the third training signal in the beam direction 2 is greater than a signal quality of the first training signal corresponding to the beam direction 1 And determining that the signal quality of the second training signal is greater than the signal quality of the third training signal, sending the first random access message to the base station on the K+2+3n frame.

The terminal 0 determines that the average signal quality of the second training signal and the third training signal in the beam direction 2 is greater than the weighted signal quality of the first training signal corresponding to the beam direction 1, and the weighted signal quality of the two training signals in the beam direction 2 The value is the maximum of the K+2 frame, and the terminal 0 sends the first random access message to the base station on the K+2+3n frame.

Step 5: The base station receives a random access message sent by the terminal 0 in the first beam direction.

Step 6: The base station sends a random access response message to the terminal 0 in the first beam direction.

The base station performs beamforming processing on the downlink data of each terminal according to the beamforming parameters of each terminal calculated in the foregoing manner to form multi-antenna data, and only transmits in the downlink channel corresponding to the first beam direction. Common channel and downlink data of terminal 0.

Step 7: If terminal 0 receives the first random access response message sent by the base station in the first beam direction, step 8 is performed; if terminal 0 does not receive the first time within a preset time threshold Retrieving the first random access message by using the random access response message; the terminal 0 still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times. Then reselect the base station access.

Step 8: Terminal 0 performs data transmission with the base station in the first beam direction.

Step 9: The terminal 0 determines the second beam direction according to the K training signals sent by the received N beam directions.

Step 10: If the terminal 0 determines that the second beam direction is different from the first beam direction, the terminal 0 sends a second random access message in the second beam direction; or, if the terminal 0 determines the second The beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset second threshold, and the terminal 0 sends the second random access message in the second beam direction.

Step 11: The base station receives the second random access message sent by the terminal 0, determines a beam direction corresponding to the second random access message as a second beam direction of the terminal 0, and is in the second beam. The direction sends a second random access response message to the terminal 1.

Step 12: The terminal 0 and the base station perform data transmission in the second beam direction.

A possible implementation manner, the terminal 1 accessing the base station includes the following steps:

Step 2: The terminal 1 determines, according to any one of the three training signals received in the two beam directions, that the base station includes the beam direction 1 and the beam direction 2, and the frame number of the first transmission of the beam direction 1 is the first K frame, the number of consecutive frames is 1 frame; the frame number of the first transmission of beam direction 2 is the K+1 frame, and the number of continuous frames is 2 frames;

Step 3: The terminal 1 determines the first beam direction according to the signal quality of the three training signals.

Step 4: The terminal 1 sends a first random access message to the base station in the first beam direction.

The terminal 1 determines that the three training signals are a first training signal, a second training signal, and a third training signal. The first training signal corresponds to the beam direction 1 and corresponds to the Kth frame; the second training signal corresponds to the beam direction 2, corresponding to the K+1 frame; the third training signal corresponds to the beam direction 2, corresponding to the K+2 frame.

If the terminal 1 determines that the signal quality of the third training signal is the best, the beam direction 2 is determined as the first beam direction, and the first random access message is sent to the base station on the K+3+3n frame, n is a positive integer greater than or equal to zero.

If the terminal 1 determines that the average signal quality of the second training signal and the third training signal in the beam direction 2 is greater than the signal quality of the first training signal corresponding to the beam direction 1, the terminal 1 may be in the K+1+3n frame or the K+2 Sending a first random access message to the base station on a +3n frame; or if determining an average signal quality of the second training signal and the third training signal in the beam direction 2 is greater than a signal quality of the first training signal corresponding to the beam direction 1 And determining that the signal quality of the second training signal is greater than the signal quality of the third training signal, sending the first random access message to the base station on the K+2+3n frame.

The terminal 1 determines that the average signal quality of the second training signal and the third training signal in the beam direction 2 is greater than the weighted signal quality of the first training signal corresponding to the beam direction 1, and the weighted signal quality of the two training signals in the beam direction 2 The value is the maximum of the K+2 frame, and the terminal 1 transmits the first random access message to the base station on the K+2+3n frame.

Step 5: The base station receives, in the first beam direction, a random access message sent by the terminal 1;

Step 6: The base station sends a random access response message to the terminal 1 in the first beam direction.

Step 7: If the terminal 1 receives the first random access response message sent by the base station in the first beam direction, step 8 is performed; if the terminal 1 does not receive the first time within a preset time threshold Retrieving the first random access message by using the random access response message; the terminal 1 still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times. Then reselect the base station access.

Step 8: The terminal 1 performs data transmission with the base station in the first beam direction.

Step 9. The K training signals sent by the N beam directions received by the terminal 1 determine the second beam direction.

Step 10: If the terminal 1 determines that the second beam direction is different from the first beam direction, the terminal 1 sends a second random access message in the second beam direction; or, if the terminal 1 determines the second The beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset second threshold, and the terminal 1 sends a second random access message in the second beam direction.

Step 11: The base station receives a second random access message sent by the terminal 1, and determines a beam direction corresponding to the second random access message as a second beam direction of the terminal 1, and in the second beam. The direction sends a second random access response message to the terminal 1.

Step 12: The terminal 1 and the base station perform data transmission in the second beam direction.

As shown in FIG. 3, the embodiment of the present application provides a device for communication, where the device includes:

The transceiver unit 301 is configured to receive M training signals sent by the base station in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N;

The processing unit 302 is configured to determine a first beam direction according to the M training signals;

The transceiver unit 301 is configured to send a first random access message to the base station in a first beam direction, where the receiving unit is further configured to receive, in the first beam direction, a first random connection sent by the base station In response message.

A possible implementation, the processing unit 302 is specifically configured to:

A possible implementation manner, the transceiver unit 301 is configured to send an uplink data packet to the base station in the first beam direction, or receive a downlink data packet sent by the base station in the first beam direction. Text.

In a possible implementation manner, the transceiver unit 301 resends the first random access message if the first random access response message is not received within a preset time threshold.

The transceiver unit 301 does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times, and the processing unit 302 reselects the base station access, where the F is greater than 1. Positive integer.

And if the second beam direction is different from the first beam direction, the transceiver unit 301 is configured to send a second random access message to the base station in the second beam direction; in the second beam direction. Receiving a second random access response message sent by the base station; or

And if the second beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset threshold, the transceiver unit 301 is configured to send a second random connection in the second beam direction. And receiving a second random access response message sent by the base station in the second beam direction.

As shown in FIG. 4, an embodiment of the present application provides a device for communication, where the device includes:

The transceiver unit 401 is configured to transmit M training signals in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N; the first random access message sent by the receiving terminal;

The processing unit 402 is configured to determine a beam direction of the first random access message as a first beam direction of the terminal;

The transceiver unit 401 is configured to send a first random access response message to the terminal in the first beam direction.

In a possible implementation, the transceiver unit 401 is configured to: receive an uplink data packet sent by the terminal in the first beam direction; or send a downlink to the terminal in the first beam direction. Data message.

a possible implementation manner, the transceiver unit 401 is further configured to receive a second random access message sent by the terminal;

The processing unit 402 is configured to determine a beam direction corresponding to the second random access message as a second beam direction of the terminal, and if the second beam direction is determined to be different from the first beam direction, send and receive The unit 401 sends a second random access response message to the terminal in the second beam direction, and performs data transmission with the terminal in the second beam direction.

As shown in FIG. 5, an embodiment of the present application provides a device for communication, where the device includes:

The transceiver 501 is configured to receive M training signals that are sent by the base station in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N;

The processor 502 is configured to determine a first beam direction according to the M training signals;

The transceiver 501 is configured to send a first random access message to the base station in a first beam direction, where the receiving unit is further configured to receive, in the first beam direction, a first random connection sent by the base station In response message.

A possible implementation, the processor 502 is specifically configured to:

In a possible implementation manner, the transceiver 501 is configured to send an uplink data packet to the base station in the first beam direction, or receive a downlink data packet sent by the base station in the first beam direction. Text.

In a possible implementation manner, the transceiver 501 resends the first random access message if the first random access response message is not received within a preset time threshold.

If the transceiver 501 still does not receive the first random access response message of the base station after repeatedly transmitting the first random access message F times, the processor 502 reselects the base station access, where the F is greater than 1. Positive integer.

A possible implementation, the processor 502 is specifically configured to:

If it is determined that the second beam direction is different from the first beam direction, the transceiver 501 is configured to send a second random access message to the base station in the second beam direction; in the second beam direction. Receiving a second random access response message sent by the base station; or

And if the second beam direction is different from the first beam direction, and the signal quality of the first beam direction is less than a preset threshold, the transceiver 501 is configured to send the second random connection in the second beam direction. And receiving a second random access response message sent by the base station in the second beam direction.

As shown in FIG. 6, the embodiment of the present application provides a device for communication, where the device includes:

The transceiver 601 is configured to transmit M training signals in the N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N; the first random access message sent by the receiving terminal;

The processor 602 is configured to determine a beam direction of the first random access message as a first beam direction of the terminal;

The transceiver 601 is configured to send a first random access response message to the terminal in the first beam direction.

In a possible implementation manner, the transceiver 601 is configured to: receive an uplink data packet sent by the terminal in the first beam direction; or send a downlink to the terminal in the first beam direction. Data message.

a possible implementation, the transceiver 601 is further configured to receive a second random access message sent by the terminal;

The processor 602 is configured to determine a beam direction corresponding to the second random access message as a second beam direction of the terminal, and if it is determined that the second beam direction is different from the first beam direction, send and receive The machine 601 sends a second random access response message to the terminal in the second beam direction, and performs data transmission with the terminal in the second beam direction.

In Figures 5 and 6, the transceiver can be a wired transceiver, a wireless transceiver, or a combination thereof. The wired transceiver can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless transceiver can be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof. The processor may be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of CPU and NP. The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof. The above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.

Optionally, the bus interface may also be included in FIG. 5 and FIG. 6. The bus interface may include any number of interconnected buses and bridges, and specifically, various circuits of the memory represented by one or more processors and memories represented by the processor. Linked together. The bus interface can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver provides means for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. A device that implements the functions specified in one flow or two or more processes and/or block diagrams of one or more blocks.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one flow of the flowchart or in more than two flows and/or block diagrams in one or more blocks.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one flow or more than two or more of the flow diagrams and/or one or more blocks of the block diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A method of communicating, characterized in that the method comprises:

M training signals sent by the base station in the N beam directions; the M, N are positive integers greater than 1, and M is greater than or equal to N;

Receiving, by the base station, the first random access message sent by the terminal, determining a beam direction of the first random access message as a first beam direction of the terminal;

The base station sends a first random access response message to the terminal in the first beam direction.
The method according to claim 1, wherein after the base station sends the first random access response message to the terminal in the first beam direction, the method further includes:

Receiving, by the base station, an uplink data packet sent by the terminal in the first beam direction; or

The base station sends a downlink data packet to the terminal in the first beam direction.
The method according to claim 1, wherein the beam direction of the first random access message is the same as the beam direction of the training sequence of the radio frame in which the first random access message is located.
The method according to any one of claims 1 to 3, wherein each of the M training signals comprises a transmission frame number of the training signal, and a frame of the training signal corresponding to the beam direction for the first transmission of the radio frame. The number and the training signal correspond to the number of consecutive frames in the beam direction.
The method according to any one of claims 1-3, wherein after the base station sends the first random access response message to the terminal in the first beam direction, the method further includes:

Receiving, by the base station, a second random access message sent by the terminal;

Determining, by the base station, a beam direction corresponding to the second random access message as a second beam direction of the terminal;

If the base station determines that the second beam direction is different from the first beam direction, sending a second random access response message to the terminal in the second beam direction, and in the second beam direction Data transmission with the terminal.
A device for communicating, characterized in that the device comprises:

a transceiver unit, configured to transmit M training signals in N beam directions; the M and N are positive integers greater than 1, and M is greater than or equal to N; the first random access message sent by the receiving terminal;

a processing unit, configured to determine a beam direction of the first random access message as a first beam direction of the terminal;

The transceiver unit is configured to send a first random access response message to the terminal in the first beam direction.
The device according to claim 6, wherein the transceiver unit is specifically configured to:

Receiving, in the first beam direction, an uplink data packet sent by the terminal; or

Sending a downlink data message to the terminal in the first beam direction.
The apparatus according to claim 6, wherein the beam direction of the first random access message is the same as the beam direction of the training sequence of the radio frame in which the first random access message is located.
The apparatus according to any one of claims 6-8, wherein each of the M training signals comprises a transmission frame number of the training signal, and a frame of the training signal corresponding to the beam direction for the first transmission of the radio frame The number and the training signal correspond to the number of consecutive frames in the beam direction.
The device according to any one of claims 6-8, wherein the transceiver unit is further configured to:

Receiving a second random access message sent by the terminal;

The processing unit is configured to determine a beam direction corresponding to the second random access message as a second beam direction of the terminal; if it is determined that the second beam direction is different from the first beam direction, The transceiver unit sends a second random access response message to the terminal in the second beam direction, and performs data transmission with the terminal in the second beam direction.
A communication device for performing the method of any one of claims 1 to 5.
A communication device, comprising: a processor, a memory, and a computer program or instruction stored on the memory and executable on the processor, wherein the processor causes the program or instruction to cause the The communication device implements the method of any one of claims 1 to 5.
A computer readable storage medium, comprising a computer program, when executed on a computer, causes the method of any one of claims 1 to 5 to be performed.