CN112994761B

CN112994761B - Beam determination method and device

Info

Publication number: CN112994761B
Application number: CN201911276949.3A
Authority: CN
Inventors: 江世宇; 杨新玲; 张敏
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2022-06-07
Anticipated expiration: 2039-12-12
Also published as: CN112994761A

Abstract

The application provides a beam determining method and a beam determining device, which are used for solving the problem that an uplink transmission beam selected by a terminal device in an initial beam determining process cannot be aligned with a base station, so that the base station cannot successfully receive a signal transmitted by the terminal device. The method comprises the following steps: the base station sends N sets of reference signals to the terminal equipment, and the terminal equipment receives the N sets of reference signals by using each receiving beam in M receiving beams; the terminal equipment determines the receiving quality parameters of the M receiving beams, selects the receiving beam with the maximum receiving quality parameter as a downlink receiving beam, and takes the downlink receiving beam as an uplink sending beam. Because the receiving quality parameter of the downlink receiving beam determined by the terminal equipment is the largest, the probability that the downlink receiving beam is aligned to the base station is higher, that is, the probability that the uplink transmitting beam determined by the terminal equipment is aligned to the base station is improved. The method can improve the transmission efficiency of the uplink transmission beam of the terminal equipment, thereby enabling the base station to successfully receive the signal.

Description

Beam determination method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for determining a beam.

Background

With the large-scale antenna technology already in the fourth generation (the 4)^thgeneration, 4G) communication system, and in the face of increasing demands of users on the transmission rate, system capacity, and the like of the communication system, beam forming based on large-scale antennas will still be an important direction of communication technology evolution.

Beamforming is a signal preprocessing technique based on an antenna array, and the beamforming generates a beam with directivity by adjusting a weighting coefficient of each array element in the antenna array, so as to obtain an obvious array gain. As shown in fig. 1, the communication device may obtain M beams in different directions through M groups of antenna array coefficients, in other words, one beam corresponds to one group of antenna array coefficients. The communication device may use either beam for signal transmission.

In a communication system supporting beamforming technology, before a terminal device and a base station perform data transmission, it is necessary to determine the respective used beams. For example, the initial beam determination process shown in fig. 2 includes the following specific steps:

1. the base station periodically transmits the corresponding reference signal by using each beam in a plurality of beams, wherein one beam corresponds to one type of reference signal. As shown in the figure, beams a0-a4 correspond to one of 5 sets of reference signals (reference signal 0-reference signal 4), respectively, where the signal sequences of the different sets of reference signals are different. Wherein the reference signal may be an SSB.

2. After the terminal device receives a target reference signal (for example, reference signal 3) by using its beam B1 (for example, B1 is a wide beam), it determines that the beam B1 that receives the target reference signal is a downlink receiving beam of the terminal device. The terminal equipment determines a target lead code corresponding to the target reference signal according to the corresponding relation between the stored reference signal and the lead code; the terminal device then chooses to transmit the target preamble using beam B2. And the terminal equipment determines B2 as an uplink transmission beam of the terminal equipment.

3. After receiving the target lead code through a beam A2, the base station determines a reference signal corresponding to the target lead code according to the stored correspondence between the reference signal and the lead code, and then determines a beam for transmitting the reference signal in a plurality of managed beams to be A3; the base station determines A3 to be a downlink transmit beam and a2 to be an uplink receive beam.

However, in the initial beam determination procedure, since the directions of the beams are different, when the terminal device selects the beam B2, it cannot be guaranteed that the B2 is aligned with the base station, which may result in that the base station cannot successfully receive the signal (e.g., the preamble) transmitted by the terminal device, and thus data transmission between the terminal device and the base station is affected.

Disclosure of Invention

The application provides a beam determining method and a beam determining device, which are used for solving the problem that in an initial beam determining process, an uplink transmitting beam selected by a terminal device cannot be aligned to a base station, so that the base station cannot successfully receive a signal transmitted by the terminal device.

The embodiment of the invention provides the following specific technical scheme:

in a first aspect, an embodiment of the present application provides a beam determination method, which specifically includes the following steps:

the terminal equipment receives N sets of reference signals sent by a base station in M reference signal periods by using M receiving beams, wherein one receiving beam corresponds to N sets of reference signals in one reference signal period, and M, N are integers which are larger than 1;

the terminal equipment determines signal quality parameters for respectively receiving N sets of reference signals by using M receiving beams, and determines the receiving quality parameters of the M receiving beams according to the signal quality parameters for respectively receiving the N sets of reference signals by using the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam;

the terminal equipment determines the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams;

and the terminal equipment determines an uplink transmitting beam according to the downlink receiving beam, wherein the antenna array coefficients of the uplink transmitting beam and the downlink receiving beam are the same.

By the method, because the receiving quality parameter of the downlink receiving beam selected by the terminal equipment is the largest, which indicates that the signal transmission efficiency of the downlink receiving beam is higher, the probability that the downlink receiving beam is aligned with the base station is higher, therefore, the terminal equipment uses the downlink receiving beam as the uplink transmitting beam to transmit signals such as the lead code, and the like, and the transmission efficiency of the lead code can be improved, thereby improving the probability that the base station receives the signals transmitted by the terminal equipment. In summary, the method can improve the probability that the uplink transmission beam selected by the terminal device is aligned to the base station in the initial beam determination process, thereby improving the success of the base station receiving the signal transmitted by the terminal device.

In one possible implementation manner, the determining, by the terminal device, the reception quality parameters of M reception beams according to the signal quality parameters of N sets of reference signals respectively received by using the M reception beams includes:

the terminal equipment determines the signal quality parameters of N sets of reference signals received by the ith receiving beam in the signal quality parameters of N sets of reference signals respectively received by M receiving beams, wherein i is a positive integer less than or equal to M;

the terminal equipment determines the reception quality parameter of the ith receiving beam as the maximum value in the signal quality parameters of the N sets of reference signals received by the ith receiving beam; or

The terminal equipment calculates the average value of the signal quality parameters of the N sets of reference signals received by the ith receiving beam, and determines the receiving quality parameter of the ith receiving beam as the average value; or

The terminal device calculates the sum of the signal quality parameters of the N sets of reference signals received by the ith receiving beam, and determines the receiving quality parameter of the ith receiving beam as the sum.

By the method, the terminal equipment can flexibly and accurately determine the receiving quality parameters of the M receiving beams.

In one possible implementation, after the terminal device determines to receive the signal quality parameter of each set of reference signals using M reception beams, the method further includes:

the terminal equipment determines the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using M receiving beams, wherein the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission;

and the terminal equipment sends a measurement result to the base station so that the base station determines a downlink sending beam according to the measurement result, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals.

By the method, the terminal equipment can accurately determine the transmission quality parameters of the N sets of reference signals and send the measurement result to the base station, so that the base station can determine the downlink sending beam according to the transmission quality parameters of the N sets of reference signals in the measurement result.

In one possible implementation manner, the determining, by the terminal device, the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using the M reception beams includes:

the terminal equipment determines the signal quality parameters of the j set of reference signals received by the M receiving beams in the signal quality parameters of the N sets of reference signals respectively received by the M receiving beams; wherein j is a positive integer less than or equal to N;

optionally, the terminal device determines that the transmission quality parameter of the jth set of reference signals is a maximum value among the signal quality parameters of the jth set of reference signals received by using M receiving beams.

Optionally, the terminal device calculates an average value of signal quality parameters of a jth set of reference signals received by using M receiving beams, and determines that the transmission quality parameter of the jth set of reference signals is the average value.

Optionally, the terminal device calculates a sum of signal quality parameters of a jth set of reference signals received by using M receiving beams, and determines the transmission quality parameter of the jth set of reference signals as the sum.

By the method, the terminal equipment can flexibly and accurately determine the transmission quality parameters of the N sets of reference signals.

In one possible implementation, the signal quality parameter of any one of the reference signals is at least one or a combination of:

reference signal received power, RSRP, of the reference signal, signal strength of the reference signal, reference signal received quality, RSRQ, of the reference signal.

In a second aspect, an embodiment of the present application further provides a beam determination method, where the method includes:

a base station transmits N sets of reference signals by using N transmission beams, wherein one transmission beam corresponds to one set of reference signals, each set of reference signals comprises P symbols in a time domain, and both N and P are integers greater than 1;

the base station receives a measurement result sent by terminal equipment, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission;

the base station selects a target reference signal with the maximum transmission quality parameter from the N sets of reference signals;

and the base station determines the transmitting beam for transmitting the target reference signal as a downlink transmitting beam in the N transmitting beams.

Through the method, the base station can select the transmitting beam with the maximum transmission quality of the parameter signals as the downlink transmitting beam from the N transmitting beams, so that the signal transmission efficiency of the base station is improved.

In one possible implementation, the base station transmits N sets of reference signals using N transmission beams, including:

and the base station periodically transmits the N sets of reference signals by using the N transmission beams.

In a third aspect, an embodiment of the present application provides a beam determination method, including:

the method comprises the steps that the terminal equipment receives P symbols contained in each set of reference signals by using M receiving beams aiming at each set of reference signals in N sets of reference signals sent by a base station, wherein at least two symbols in the P symbols contained in each set of reference signals are received by using different receiving beams;

the terminal equipment determines signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

the terminal equipment determines the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission;

the terminal equipment sends a measurement result to the base station so that the base station determines a downlink sending beam according to the measurement result, wherein the measurement result comprises transmission quality parameters of the N sets of reference signals;

the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of P symbols contained in each set of reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam;

and the terminal equipment determines the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams.

By the method, the base station can adjust the downlink transmission beam and the downlink receiving beam by the terminal equipment only by sending the reference signal to the terminal equipment once, so that the time consumption of the whole beam adjustment process is short, the transmission quality of the adjusted beam signal is good, and the transmission efficiency of the service data is improved.

In one possible implementation, when M is equal to P, the terminal device receives P symbols included in each set of reference signals using M reception beams, including: the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N; or when M is>When P is received, the terminal device receives P symbols included in each set of reference signals by using M receive beams, including: the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

the terminal device determines the transmission quality parameter of each set of reference signals according to the signal quality parameters of the P symbols contained in each set of reference signals received by using the M receiving beams, and the method comprises the following steps:

the terminal equipment determines the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams from the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

the terminal equipment determines that the transmission quality parameter of the ith set of reference signals is the maximum value in the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams; or

The terminal equipment calculates the average value of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams, and determines the transmission quality parameters of the ith set of reference signals as the average value; or

The terminal device calculates the sum of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams, and determines the transmission quality parameter of the ith set of reference signals as the sum.

The method provides a specific scheme that the terminal equipment receives P symbols contained in each set of reference signals by using M receiving beams when M is P and M is greater than P, and the transmission quality parameters of each set of reference signals are flexibly and accurately determined.

In one possible implementation manner, when M < P, the terminal device receives P symbols included in each set of reference signals using M reception beams, including:

the terminal equipment receives M groups of symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one group of symbols, i is a positive integer less than or equal to N, and the group of symbols received by at least one receiving beam in the M receiving beams comprises a plurality of symbols;

the terminal equipment determines the signal quality parameters of M groups of symbols in the ith set of reference signals received by using M receiving beams from the signal quality parameters of M groups of symbols contained in each set of reference signals received by using the M receiving beams;

the terminal equipment determines that the transmission quality parameter of the ith reference signal is as follows: a maximum of the signal quality parameters for the M groups of symbols in the ith set of reference signals received using the M receive beams; or alternatively

The terminal equipment calculates the average value of the signal quality parameters of M groups of symbols in the ith set of reference signals received by using the M receiving beams, and determines the transmission quality parameters of the ith set of reference signals as the average value; or

The terminal equipment calculates the sum of signal quality parameters of M groups of symbols in the ith set of reference signals received by using the M receiving beams, and determines the transmission quality parameter of the ith set of reference signals as the sum;

wherein, the signal quality parameters of a group of symbols received by the jth receiving beam of the M receiving beams are: an average value of the signal quality parameters of all the symbols in the group of symbols received by the jth receiving beam, or a maximum value of the signal quality parameters of all the symbols in the group of symbols received by the jth receiving beam, j being a positive integer less than or equal to M.

Through the method, it is specifically analyzed how the terminal device determines the transmission quality parameter of each set of reference signals according to the signal quality parameters of the P symbols contained in each set of reference signals received by using the M receiving beams when the number of signal receiving beams used for receiving the P symbols contained in each set of reference signals is less than the number of symbols.

In one possible implementation manner, the determining, by the terminal device, the reception quality parameters of the M reception beams according to the signal quality parameters of the P symbols included in each set of reference signals received by using the M reception beams includes:

optionally, the terminal device determines, in receiving the signal quality parameters of P symbols included in each set of reference signals by using M reception beams, the signal quality parameters of all symbols received by using a kth reception beam;

the terminal device determines that the reception quality parameter of the kth receiving beam is: the maximum value among the signal quality parameters of all symbols received using the k-th receive beam.

Optionally, the terminal device calculates an average value of the signal quality parameters of all the symbols received by using the kth receiving beam, and determines the receiving quality parameter of the kth receiving beam as the average value.

Optionally, the terminal device calculates a sum of signal quality parameters of all symbols received using the kth receiving beam, and determines the receiving quality parameter of the kth receiving beam to be the sum.

By the method, the terminal more accurately obtains the receiving quality parameters of the receiving beams by adopting three calculation modes according to the signal quality parameters of all symbols of one of the M receiving beams, so as to determine the receiving quality parameters of the M receiving beams subsequently.

In a fourth aspect, an embodiment of the present application provides a terminal device, including:

a transceiver for receiving a reference signal transmitted by a base station using each of M reception beams, wherein M is an integer greater than 1;

a processor for determining signal quality parameters for reference signals received using the M receive beams; determining the receiving quality parameters of the M receiving beams according to the signal quality parameters of the reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams; and determining an uplink transmission beam according to the downlink receiving beam, wherein the uplink transmission beam and the downlink receiving beam have the same antenna array coefficient.

In one possible implementation, when receiving a reference signal transmitted by a base station using each of the M receive beams, the transceiver is specifically configured to:

receiving N sets of reference signals transmitted by the base station in M reference signal periods by using the M receiving beams, wherein one receiving beam corresponds to N sets of reference signals in one reference signal period, the N sets of reference signals are transmitted by N transmitting beams in the base station, and N is an integer greater than 1;

the processor, when determining the signal quality parameters of the reference signals received using the M receive beams, is specifically configured to:

signal quality parameters for N sets of reference signals received using M receive beams are determined.

In one possible implementation manner, when determining the reception quality parameters of the M reception beams according to the signal quality parameters of the reference signals received by using the M reception beams, the processor is specifically configured to:

determining signal quality parameters of N sets of reference signals received by using an ith receiving beam from the signal quality parameters of the N sets of reference signals received by using M receiving beams, wherein i is a positive integer less than or equal to M;

determining a reception quality parameter of the ith reception beam to be a maximum value among the signal quality parameters of the N sets of reference signals received using the ith reception beam; or alternatively

Calculating an average value of the signal quality parameters of the N sets of reference signals received by using the ith receiving beam, and determining the receiving quality parameter of the ith receiving beam as the average value; or

Calculating a sum of the signal quality parameters of the N sets of reference signals received using the ith reception beam, and determining the reception quality parameter of the ith reception beam as the sum.

In one possible implementation, the processor is configured to: after determining the signal quality parameters of N sets of reference signals received by using M receiving beams, determining the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using M receiving beams, wherein the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission; selecting a target reference signal with the maximum transmission quality parameter from the N sets of reference signals, and determining a target lead code corresponding to the target reference signal;

the transceiver is further configured to: and sending the target lead code to the base station so that the base station determines a downlink sending beam according to the target lead code.

In one possible implementation manner, when determining the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using the M reception beams, the processor is specifically configured to:

determining signal quality parameters of a jth set of reference signals received by using M receiving beams in signal quality parameters of N sets of reference signals respectively received by using M receiving beams; wherein j is a positive integer less than or equal to N;

determining a transmission quality parameter of the jth set of reference signals as a maximum value among signal quality parameters of jth set of reference signals received using the M receive beams; or

Calculating an average value of signal quality parameters of a jth set of reference signals received by using M receiving beams, and determining the transmission quality parameters of the jth set of reference signals as the average value; or

And calculating the sum of the signal quality parameters of the j reference signals received by using the M receiving beams, and determining the transmission quality parameter of the j reference signals as the sum.

In a fifth aspect, an embodiment of the present application provides a base station, including:

a transceiver, configured to transmit N sets of reference signals using N transmit beams, where one transmit beam corresponds to one set of reference signals, each set of reference signals includes P symbols in a time domain, and N and P are integers greater than 1; receiving a measurement result sent by the terminal equipment, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission;

a processor, configured to select a target reference signal with a largest transmission quality parameter from the N sets of reference signals; and determining the transmission beam for transmitting the target reference signal as a downlink transmission beam in the N transmission beams.

In one possible implementation, when the transceiver transmits N sets of reference signals using N transmission beams, the transceiver is specifically configured to: and periodically transmitting the N sets of reference signals by using the N transmission beams.

In a sixth aspect, an embodiment of the present application provides a terminal device, including:

a transceiver, configured to receive, for each of N sets of reference signals transmitted by a base station, P symbols included in each set of reference signals using M reception beams, where at least two symbols of the P symbols included in each set of reference signals are received using different reception beams; the base station is further configured to send a measurement result to the base station, so that the base station determines a downlink transmission beam according to the measurement result, where the measurement result includes transmission quality parameters of the N sets of reference signals;

a processor for determining signal quality parameters for P symbols contained in each set of reference signals received using M receive beams; determining the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission; the terminal device is further configured to determine, according to signal quality parameters of P symbols included in each set of reference signals received by using M receive beams, reception quality parameters of the M receive beams, where the reception quality parameter of any receive beam is used to characterize signal quality of the reference signal received by the terminal device using the receive beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam among the M receiving beams.

In one possible implementation, when M is equal to P, the transceiver, when receiving P symbols included in each set of reference signals using M receive beams, is specifically configured to: receiving P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N; or

When M is<P, when the transceiver receives P symbols included in each set of reference signals using M receive beams, the transceiver is specifically configured to: the communication unit receives P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

the processor, when determining the transmission quality parameter of each set of reference signals according to the signal quality parameters of P symbols included in each set of reference signals received by using M receive beams, is specifically configured to:

determining signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams from the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

determining the transmission quality parameter of the ith set of reference signals as the maximum value of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams; or

Calculating an average value of signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams, and determining the transmission quality parameters of the ith set of reference signals as the average value; or

Calculating a sum of signal quality parameters of P symbols in the ith set of reference signals received using M receive beams, and determining a transmission quality parameter of the ith set of reference signals as the sum.

In one possible implementation, when M > P, the transceiver, when receiving P symbols included in each set of reference signals using M receive beams, is further configured to:

dividing M receiving beams into P groups, and receiving P symbols in the ith set of reference signals by using each group of receiving beams in the P groups of receiving beams, wherein one group of receiving beams corresponds to one symbol, i is a positive integer less than or equal to N, and at least one group of receiving beams in the P groups of receiving beams comprises a plurality of receiving beams;

determining signal quality parameters of P symbols in the ith set of reference signals received by using the P sets of receiving beams from among the signal quality parameters of P symbols contained in each set of reference signals received by using the M sets of receiving beams;

determining the transmission quality parameter of the ith reference signal as: a maximum of the signal quality parameters of the P symbols in the ith set of reference signals received using the P sets of receive beams; or

Calculating an average value of signal quality parameters of P symbols in the ith set of reference signals received by using the P groups of receiving beams, and determining the transmission quality parameters of the ith set of reference signals as the average value; or

Calculating the sum of the signal quality parameters of P symbols in the ith set of reference signals received by using the P groups of receiving beams, and determining the transmission quality parameter of the ith set of reference signals as the sum;

wherein, the signal quality parameter of any symbol received by the jth group of receiving beams in the P groups of receiving beams is: an average value of the signal quality parameters of the symbol received by all the receiving beams included in the jth group of receiving beams, or a maximum value of the signal quality parameters of the symbol received by all the receiving beams included in the jth group of receiving beams, j being a positive integer less than or equal to P.

In one possible implementation manner, when determining the reception quality parameters of the M reception beams according to the signal quality parameters of the P symbols included in each set of reference signals received by using the M reception beams, the processor is specifically configured to:

determining signal quality parameters of all symbols received by using a kth receiving beam from the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

determining the reception quality parameter of the kth reception beam as: a maximum value among the signal quality parameters of all symbols received using the kth receive beam; or

Calculating an average value of signal quality parameters of all symbols received using a kth receive beam, and determining the receive quality parameter of the kth receive beam as the average value;

a sum of signal quality parameters of all symbols received using a kth receive beam is calculated and the receive quality parameter of the kth receive beam is determined to be the sum.

In a seventh aspect, an embodiment of the present application further provides a communication system, where the communication system includes a terminal device and a base station.

In an eighth aspect, a computer-readable storage medium has stored therein a computer program which, when run on an electronic device, causes the electronic device to perform the method provided in any of the above aspects.

A ninth aspect is a computer program comprising instructions which, when run on a computer, cause the computer to perform the method provided by any of the above aspects.

In a tenth aspect, a chip for reading a computer program stored in a memory performs the method provided in any of the above aspects.

Drawings

Fig. 1 is a beam diagram of a communication device in the prior art;

fig. 2 is a schematic diagram of an initial beam determination process in the prior art;

fig. 3 is an architecture diagram of a communication system according to an embodiment of the present application;

FIG. 4A is a diagram illustrating beam adjustment according to the prior art;

FIG. 4B is a diagram illustrating beam adjustment according to the prior art;

fig. 5A is a flowchart of a beam determination method according to an embodiment of the present application;

fig. 5B is a schematic diagram of beam determination according to an embodiment of the present application;

fig. 6A is a flowchart of a beam adjustment method according to an embodiment of the present application;

fig. 6B is a schematic diagram of downlink beam adjustment according to an embodiment of the present application;

fig. 7 is a 38211 protocol CSI-RS resource pattern configuration table provided in an embodiment of the present application;

fig. 8 is a structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a beam determining method and a beam determining device, which are used for solving the problem that in an initial beam determining process, an uplink transmitting beam selected by a terminal device cannot be aligned to a base station, so that the base station cannot successfully receive a signal transmitted by the terminal device. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

In the technical scheme of the embodiment of the application, in the initial beam determining process, the terminal device uses each receiving beam of M receiving beams to respectively receive N sets of reference signals in a reference signal period; then, the terminal device determines the reception quality parameters of the M reception beams according to the signal quality parameters of the N sets of reference signals respectively received by using the M reception beams, then selects the reception beam with the largest reception quality parameter as a downlink reception beam, and takes the downlink reception beam as an uplink transmission beam. Because the receiving quality parameter of the downlink receiving beam selected by the terminal device is the largest, which indicates that the signal transmission efficiency of the downlink receiving beam is higher, the probability that the downlink receiving beam is aligned with the base station is higher, and therefore, the terminal device sends signals such as a lead code and the like by using the downlink receiving beam as the uplink sending beam, and can also improve the transmission efficiency of the lead code, thereby improving the probability that the base station receives the signals sent by the terminal device. In summary, the method can improve the probability that the uplink transmission beam selected by the terminal device is aligned to the base station in the initial beam determination process, thereby improving the success of the base station receiving the signal transmitted by the terminal device.

Some terms in the embodiments of the present application will be explained below to facilitate understanding by those skilled in the art.

1. A Base Station (BS), also referred to as a network device, is a device deployed in a radio access network to provide wireless communication functions.

Currently, some examples of base stations are: a gbb, an NR base station, an evolved Node B (eNB), a Transmission Reception Point (TRP), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), or a Base Band Unit (BBU), etc.

In addition, in a network structure, the base station may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

2. A terminal device is a device that provides voice and/or data connectivity to a user. The terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on.

For example, the terminal device may be a handheld device, a vehicle-mounted device, or the like having a wireless connection function. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

3. Wave beam (wave beam), the communication device in the communication system makes the receiving direction gain of the antenna array gather in a certain direction by adjusting the weighting coefficient of each array element in the antenna array, and forms a wave beam. I.e., each beam corresponds to a set of antenna array coefficients and to a direction.

A communication device in a communication system can manage multiple beams by maintaining multiple sets of antenna array coefficients. Before data interaction between a base station and terminal equipment in a communication system, respective transmitting beams and receiving beams need to be determined.

4. The reference signal is a known signal transmitted by the base station to the terminal device for beam determination and adjustment.

For example, in this embodiment of the present application, in a process of determining an initial beam in a random access phase of a terminal device when the base station is a gNB or NR base station, a reference signal is an SSB; in the subsequent beam adjustment process, the Reference Signal may be a Channel State Information Reference Signal (CSI-RS).

5. And the signal quality parameter of the reference signal is used for representing the signal quality of the reference signal received by the communication equipment. Illustratively, in the embodiment of the present application, the signal quality parameter of the reference signal may be at least one or a combination of the following: reference Signal Receiving Power (RSRP) of the Reference Signal, Signal strength of the Reference Signal, Reference Signal Receiving Quality (RSRQ) of the Reference Signal, and the like.

6. Symbol (symbol), which is a time unit of the signal. Illustratively, the symbol may be an OFDM symbol.

7. A plurality of, at least two.

8. And/or, describing the association relationship of the associated object, indicating that there may be three relationships, e.g., a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "three types" generally indicates that the former and latter associated objects are in an "or" relationship.

Embodiments of the present application will be described below with reference to the drawings.

Fig. 3 illustrates a possible communication system to which the beam determination method provided in the present application is applicable. As shown, the communication system includes a base station 301 and a terminal device 302.

The base station 301 is responsible for providing radio access related services for the terminal device 302, and implements functions of a radio physical layer, resource scheduling and radio resource management, Quality of Service (QoS) management, radio access control, and mobility management (such as cell reselection and handover).

The terminal device 302 is a device that accesses a network through a cell managed by the base station 301.

In the present application, the communication system supports beamforming technology. The base station 301 and the terminal device 302 manage a plurality of beams by maintaining a plurality of antenna array coefficients, respectively. As shown in FIG. 3, the base station 301 manages beams A0-A4, and the terminal device 302 manages beams B0-B2.

In the process of cell search and random access when the terminal device 302 enters the coverage area of the base station 301, the base station 301 and the terminal device need to perform initial beam determination, that is, the base station 301 needs to determine a downlink transmission beam and an uplink reception beam, and the terminal device 302 needs to determine a downlink reception beam and an uplink transmission beam.

In addition, due to the mobility of the terminal device 302, the direction or the physical location of the terminal device 302 may change, and the signal transmission is still performed using the previously determined beam, which may reduce the transmission efficiency of the signal. Therefore, the base station 301 and the terminal device 302 also need to continuously adjust the beam.

It should be noted that The communication system shown in fig. 3 may be applied to various communication scenarios, for example, a fifth Generation (The 5th Generation, 5G) communication system, a future sixth Generation communication system and other communication systems that evolve, a Long Term Evolution (Long Term Evolution) communication system, a vehicle to everything (V2X), a Long Term Evolution-vehicle networking (LTE-vehicle, LTE-V), a vehicle to vehicle (V2V), a vehicle networking, a Machine Type communication (MTC ), an internet of things (IoT), a Long Term Evolution-Machine to Machine (LTE-Machine to Machine, LTE-M), a Machine to Machine (M2M), and other communication scenarios.

The conventional initial beam determination process and beam adjustment process will be described first with reference to the drawings.

Referring to fig. 2, at present, the conventional initial beam determination process includes the following specific steps:

1. the base station periodically transmits the reference signal corresponding to each of the plurality of beams respectively, wherein one beam corresponds to one set of reference signals. As shown in the figure, beams a0-a4 correspond to one of 5 sets of reference signals (reference signal 0-reference signal 4), respectively, where the signal sequences of the different sets of reference signals are different. Wherein the reference signal may be an SSB.

2. After the terminal device receives the target reference signal (for example, reference signal 3) by using its beam B1 (for example, B1 is a wide beam), it determines that the beam B1 receiving the target reference signal is a downlink receiving beam of the terminal device. The terminal equipment determines a target lead code corresponding to the target reference signal according to the corresponding relation between the stored reference signal and the lead code; then the terminal equipment selects to use the beam B2 to send the target lead code; and the terminal equipment determines B2 as an uplink transmission beam of the terminal equipment.

As can be seen from the above description, in the initial beam determination procedure, when the terminal device selects the beam B2 as the uplink transmission beam to transmit signals such as the target preamble, the beam B2 may not be aligned with the base station, which may result in that the base station cannot successfully receive the signals transmitted by the terminal device, and further affect data transmission between the terminal device and the base station.

In addition, after the initial beam is determined, the beam needs to be adjusted due to movement or direction rotation of the terminal device.

Referring to fig. 4A and 4B, the beam adjustment process of the conventional technique includes the following steps:

1. the base station configures a set of reference signals, wherein the set of reference signals comprises 5 sets of reference signals. Each set of reference signals corresponds to a beam. The base station transmits its corresponding reference signal using the managed 5 beams, respectively. As shown in fig. 4A, beams a0-a4 correspond to one of 5 sets of reference signals (e.g., reference signal 0-reference signal 4 in the figure), respectively, and the signal sequences of the reference signals in different sets are different. Illustratively, the reference signal may be a CSI-RS.

2. The terminal equipment receives 5 sets of reference signals sent by the base station by using an initial downlink receiving beam B1, then determines the signal quality parameters of each set of reference signals, and sends a measurement result to the base station by using an initial uplink sending beam, wherein the measurement result comprises the signal quality parameters of the 5 sets of reference signals.

3. The base station receives a measurement result sent by the terminal equipment by using an initial uplink receiving beam A2, determines a target reference signal (taking reference signal 3 as an example) with the largest signal quality parameter according to the measurement result, and determines a beam (taking beam A3 as an example) corresponding to the target reference signal as a downlink transmitting beam. At this point, the base station completes the adjustment of the downlink transmission beam for the terminal device.

4. The base station configures a set of reference signals for the terminal device, wherein the set of reference signals includes 1 set of reference signals (e.g., reference signal 5 in the figure). The base station transmits a reference signal 5 using the adjusted downlink transmission beam a 3.

5. The terminal device receives the reference signals 5 transmitted by the base station using all beams B0-B2, respectively, determines the signal quality parameters of the reference signals 5 received using each beam, and determines the beam (B0 as shown in the figure) with the largest signal quality parameter of the received reference signals 5 as a downlink receiving beam. And the terminal equipment completes the adjustment of the downlink receiving beam.

As can be seen from the above description, in the beam adjustment process, the base station needs to transmit the reference signal to the terminal device at least twice, so as to complete the adjustment of the downlink transmission beam of the base station and the adjustment of the downlink reception beam of the terminal device. The whole beam adjustment process takes a long time, and the conditions of the air interface signal may change due to factors such as environment, etc., so that the signal transmission quality of the adjusted beam is poor, and the transmission of service data is finally affected.

In order to solve the problem that an uplink transmission beam cannot be aligned to a base station in the initial beam determination process shown in fig. 2, an embodiment of the present application provides a beam determination method. The method can be applied to a communication system supporting beamforming as shown in fig. 3. A flow of a beam determination method provided in an embodiment of the present application is described in detail below with reference to fig. 5A.

S501: the base station transmits N sets of reference signals to the terminal equipment by using N transmitting beams, and the terminal equipment receives the reference signals transmitted by the base station by using each receiving beam in M receiving beams, wherein M, N are integers which are larger than 1. Optionally, the reference signal is SSB.

As shown in fig. 2, the base station transmits the reference signal corresponding to each of the N transmission beams by using each of the N transmission beams. For example, the base station transmits reference signal 0 using beam a0, reference signal 1 using beam a1, reference signal 2 using beam a2, reference signal 3 using beam A3, and reference signal 4 using beam a 4.

In one embodiment, the base station transmits the N sets of reference signals according to a reference signal period.

Accordingly, in this embodiment, the method for receiving, by the terminal device, the reference signal transmitted by the base station using each of M reception beams includes:

the terminal device uses M receiving beams to respectively receive N sets of reference signals sent by the base station in the M reference signal periods, wherein one receiving beam corresponds to N sets of reference signals in one reference signal period, M, N are integers greater than 1, and the value of M depends on the number of beams supported by the terminal device.

For example, in the case that the receiving beam of the terminal device is B0-B2, when the terminal device performs S501, the terminal device receives N sets of reference signals in the first reference signal period using beam B0, then receives N sets of reference signals in the second reference signal period using beam B1, and finally receives N sets of reference signals in the third reference signal period using B2.

S502: and the terminal equipment determines the signal quality parameters of the N sets of reference signals respectively received by the M receiving beams.

Optionally, the signal quality parameter of the reference signal is at least one or a combination of the following: reference signal received power, RSRP, of the reference signal, signal strength of the reference signal, reference signal received quality, RSRQ, of the reference signal.

S503: the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of the N sets of reference signals respectively received by the M receiving beams. Then, the terminal device takes the receiving beam with the largest receiving quality parameter as a downlink receiving beam among the M receiving beams.

Wherein the reception quality parameter of any one reception beam is used for characterizing the signal quality of the reference signal received by the terminal device by using the reception beam.

Optionally, when performing S503, the terminal device may determine the reception quality parameter of the ith reception beam through the following steps a1-a2, where i is a positive integer less than or equal to M.

a 1: the terminal equipment determines the signal quality parameters of the N sets of reference signals received by the ith receiving beam from the signal quality parameters of the N sets of reference signals respectively received by the M receiving beams. Wherein i is a positive integer less than or equal to M.

a 2: and the terminal equipment determines the receiving quality parameters of the ith receiving beam according to the signal quality parameters of the N sets of reference signals received by the ith receiving beam.

Optionally, the terminal device may perform step a2 by, but not limited to, the following methods:

the method comprises the following steps: and the terminal equipment selects the maximum value from the signal quality parameters of the N sets of reference signals as the reception quality parameter of the ith receiving beam.

The second method comprises the following steps: and the terminal equipment calculates the average value of the signal quality parameters of the N sets of reference signals, and takes the average value as the reception quality parameter of the ith receiving beam.

The third method comprises the following steps: and the terminal equipment calculates the sum of the signal quality parameters of the N sets of reference signals, and takes the sum as the receiving quality parameter of the ith receiving beam.

For example, the terminal device determines that the signal quality parameters of the N sets of reference signals received by using the ith receiving beam are respectively l_i，1，l_i，2，.......，l_i，NWhen the terminal device uses the method one, the determined reception quality parameter of the ith reception beam satisfies the formula: z_i＝max{l_i，1，l_i，2，......，l_i，N}; when the terminal device uses the second method, the determined reception quality parameter of the ith reception beam satisfies the formula: z is a linear or branched member_i＝(l_i，1+l_i，2+......+l_i，N) N; when the terminal device uses the third method, the determined reception quality parameter of the ith reception beam satisfies the formula: z_i＝l_i，1+l_i，2+......+l_i，N。

S504: and the terminal equipment determines an uplink transmission beam according to the downlink receiving beam. The antenna array coefficients of the uplink transmission beam and the downlink receiving beam are the same, that is, the uplink transmission beam and the downlink receiving beam are the same beam.

Through the above steps S501 to S504, the terminal device may determine a downlink receive beam and an uplink transmit beam. In S504, the terminal device may use the downlink receiving beam with the largest determined reception quality parameter as an uplink transmitting beam. Because the receiving quality parameter of the downlink receiving beam selected by the terminal device is the largest, which indicates that the signal transmission efficiency of the downlink receiving beam is higher, the probability that the downlink receiving beam is aligned with the base station is higher, and therefore, the terminal device sends signals such as a lead code and the like by using the downlink receiving beam as the uplink sending beam, and can also improve the transmission efficiency of the lead code, thereby improving the probability that the base station receives the signals sent by the terminal device. In summary, the method can improve the probability that the uplink transmission beam selected by the terminal device is aligned to the base station in the initial beam determination process, thereby improving the success of the base station receiving the signal transmitted by the terminal device.

The communication system may further pass the following steps S505-S508 to enable the base station to determine a downlink transmission beam and an uplink reception beam.

S505: and the terminal equipment determines the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using the M receiving beams. The transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission.

Optionally, when performing S501, in a case that the terminal device receives N sets of reference signals sent by the base station in the M reference signal periods by using M receiving beams, respectively, the terminal device may determine, when performing S505, a transmission quality parameter of a jth set of reference signals through the following steps b1-b2, where j is a positive integer less than or equal to N.

b 1: the terminal equipment determines the signal quality parameters of the jth set of reference signals received by using M receiving beams in the signal quality parameters of N sets of reference signals respectively received by using M receiving beams; wherein j is a positive integer less than or equal to N.

b 2: and the terminal equipment determines the transmission quality parameters of the jth set of reference signals according to the signal quality parameters of the jth set of reference signals received by using M receiving beams.

Optionally, the terminal device may perform step b2 by, but is not limited to, the following methods:

the method comprises the following steps: the terminal device determines the maximum value of the signal quality parameter of the j reference signal received by using M receiving beams as the transmission quality parameter of the j reference signal.

The second method comprises the following steps: and the terminal equipment calculates the average value of the signal quality parameters of the j set of reference signals received by using M receiving beams, and takes the average value as the transmission quality parameter of the j set of reference signals.

The third method comprises the following steps: the terminal equipment calculates the sum of the signal quality parameters of the j reference signal set received by using M receiving beams, and the sum is used as the transmission quality parameter of the j reference signal set.

For example, the terminal device determines that the signal quality parameters of the jth set of reference signals received by using the M receiving beams are respectively l_1,j,l_2,j,......,l_M,j. When the terminal equipment uses the method one, the transmission quality parameter of the jth set of reference signals is determined to meet the formula: q_j＝max{l_1,j,l_2,j,......,l_M,j}. When the terminal equipment uses the second method, determining that the transmission quality parameter of the jth set of reference signals meets the formula: q_j＝(l_1,j+l_2,j+......+l_M,j) and/M. When the terminal equipment uses the third method, determining that the transmission quality parameter of the jth set of reference signals meets the formula: q_j＝l_1，j+l_2，j+......+l_M，j。

S506: and the terminal equipment selects a target reference signal with the maximum transmission quality parameter from the N sets of reference signals, and determines a target lead code corresponding to the target reference signal, so that the base station determines a downlink transmission beam according to the target lead code.

And the terminal equipment determines a target lead code corresponding to the target reference signal according to the corresponding relation between the stored reference signal and the lead code.

S507: and the terminal equipment uses the determined uplink transmission beam to transmit the target preamble to the base station.

S508: and the base station receives the target lead code through any one of the N receiving beams, determines the receiving beam receiving the target lead code as an uplink receiving beam, and determines a downlink sending beam according to the target lead code.

And the base station determines a target reference signal corresponding to the target lead code according to the corresponding relation between the stored reference signal and the lead code, then determines a transmitting beam for transmitting the target reference signal in the N transmitting beams, and takes the transmitting beam as a downlink transmitting beam.

And the corresponding relation between the reference signals stored by the base station and the terminal equipment and the lead codes is the same.

Through the above steps S505-S508, the base station may determine a downlink transmission beam and an uplink reception beam. In S506, the terminal device determines a target reference signal with the maximum transmission quality, and feeds back the target reference signal to the base station by sending the form of the target preamble corresponding to the target reference signal, and the base station determines the target reference signal by using the target preamble, and finally may use a beam for sending the target reference signal as a downlink sending beam.

In a conventional method, after receiving a reference signal, the terminal device sends a preamble corresponding to the reference signal to a base station, and since the reference signal received by the terminal device is not necessarily the reference signal with the maximum transmission quality, the base station determines that the transmission quality of a downlink transmission beam according to the preamble sent by the terminal device is also not necessarily the best. In the method of the present application, the terminal device may send the target preamble of the target reference signal with the maximum transmission quality to the base station, so that the base station may determine the downlink transmission beam by receiving the target preamble corresponding to the target reference signal with the maximum transmission quality, and finally may ensure that the transmission effect of the downlink transmission beam determined by the base station is optimal.

The application provides a beam determination method. The method is applied to an initial beam determination process and comprises the following steps: the terminal equipment respectively receives N sets of reference signals in a reference signal period by using each receiving beam in the M receiving beams; then, the terminal device determines the reception quality parameters of the M reception beams according to the signal quality parameters of the N sets of reference signals respectively received by using the M reception beams, then selects the reception beam with the largest reception quality parameter as a downlink reception beam, and takes the downlink reception beam as an uplink transmission beam. Because the receiving quality parameter of the downlink receiving beam selected by the terminal device is the largest, which indicates that the signal transmission efficiency of the downlink receiving beam is higher, the probability that the downlink receiving beam is aligned with the base station is higher, and therefore, the terminal device sends signals such as a lead code and the like by using the downlink receiving beam as the uplink sending beam, and can also improve the transmission efficiency of the lead code, thereby improving the probability that the base station receives the signals sent by the terminal device. In summary, the method can improve the probability that the uplink transmission beam selected by the terminal device is aligned to the base station in the initial beam determination process, thereby improving the success of the base station receiving the signal transmitted by the terminal device.

Based on the embodiment shown in fig. 5A, the present application also provides an example of beam determination. As shown in fig. 5B. Wherein the base station manages 5 beams (as shown in the figure as beams a0-a4) and the terminal device manages 3 beams (as shown in the figure as beams B0-B2). The initial beam determination procedure includes the steps of:

1. the base station periodically transmits its corresponding SSB0 using beam a0, periodically transmits its corresponding SSB1 using beam a1, periodically transmits its corresponding SSB2 using beam a2, periodically transmits its corresponding SSB3 using beam A3, and periodically transmits its corresponding SSB4 using beam a4, with the same signal period for each SSB. The terminal device may receive SSB0-SSB4 in the first reference signal period using beam B0, then receive SSB0-SSB4 in the second reference signal period using beam B1, and finally receive SSB0-SSB4 in the third reference signal period using beam B2.

2. The terminal device determines the reception quality parameters of the 3 beams B0-B2 according to the method provided in step S503, selects the reception beam B0 with the largest reception quality parameter as the downlink reception beam, and uses the downlink reception beam B0 as the uplink transmission beam.

3. The terminal device determines the received transmission quality parameters of the 5 SSBs according to the method improved in step S505, and determines a target preamble corresponding to the SSB with the largest transmission quality parameter (for example, SSB2) according to the stored correspondence between the SSBs and the preambles, and the terminal device transmits the target preamble to the base station using the uplink transmission beam B0.

4. The base station receives the target preamble by using the beam A3, and then takes the beam A3 as an uplink receiving beam; and the base station determines the SSB2 corresponding to the target lead code according to the stored corresponding relation between the SSB and the lead code, and then takes the beam A2 for transmitting the SSB2 as a downlink transmission beam.

In order to solve the problem that the time consumption of the whole beam adjustment process is long in the beam adjustment process, the embodiment of the application provides a beam determination method. The method may be applied in a communication system supporting beamforming as shown in fig. 3. A detailed description is given below of a flow of a beam determination method provided in an embodiment of the present application with reference to fig. 6A.

S601: the base station configures a group of reference signals for the terminal equipment, wherein the group of reference signals comprises N sets of reference signals. The base station sends N sets of reference signals to the terminal equipment by using N sending beams, wherein one sending beam corresponds to one set of reference signals, each set of reference signals comprises P symbols in a time domain, and N and P are integers larger than 1. Optionally, the base station periodically sends each set of reference signals to the terminal device, and the reference signals of each set of reference signals are the same periodically.

For example, as shown in fig. 4A, the base station periodically transmits 5 sets of reference signals to the terminal device using 5 transmission beams, for example, the base station transmits reference signal 0 using beam a0, transmits reference signal 1 using beam a1, transmits reference signal 2 using beam a2, transmits reference signal 3 using beam A3, and transmits reference signal 4 using beam a4, where each set of reference signals includes P (e.g., P ═ 4) symbols in the time domain.

Optionally, the reference signal is a CSI-RS, and the symbol is an OFDM symbol; the CSI-RS configuration may refer to the protocol specification of version 38.211-F50, and configure a CSI-RS resource pattern number of row _ idx ═ 15 or row _ idx ═ 18, corresponding to 4 OFDM symbols in the time domain, as shown in fig. 7.

S602: the terminal equipment receives P symbols contained in each set of reference signals by using M receiving beams aiming at each set of reference signals in N sets of reference signals sent by the base station, and determines signal quality parameters of the P symbols contained in each set of reference signals received by using the M receiving beams, wherein at least two symbols in the P symbols contained in each set of reference signals are received by using different receiving beams.

Depending on the relationship between M and P, the present application may include the following three embodiments.

In a first embodiment, when M is equal to P, the terminal device receives P symbols included in each set of reference signals using M reception beams, and includes: and the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N.

For example, each set of CSI-RS contains 4 symbols, the terminal device manages 4 receiving beams B0-B3, and the terminal device may receive the symbols in the ith set of CSI-RS by: the first symbol is received using receive beam B0, the second symbol is received using receive beam B1, the third symbol is received using receive beam B2, and the fourth symbol is received using receive beam B3. The terminal equipment determines that the signal quality parameters of 4 symbols in the ith set of CSI-RS received by using M receiving beams are respectively as follows: l. the_B0,i,1、l_B1,i,2、l_B2,i,3、l_B3,i,4。

In a second embodiment, M>When P, the terminal device uses M receiving beams to receive P symbols included in each set of reference signals, respectively, including: the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

for example, each set of CSI-RS includes 4 symbols, the terminal device manages 5 receiving beams B0-B4, and the terminal device may receive the symbols of the ith set of CSI-RS by: during the first reference signal period, the first symbol is received using receive beam B0, the second symbol is received using receive beam B1, the third symbol is received using receive beam B2, the fourth symbol is received using receive beam B3, and any of the 4 symbols (for example, the first symbol) is received using receive beam B4 during the second reference signal period. The terminal equipment determines that the signal quality parameters of 4 symbols in the ith set of CSI-RS received by using 5 receiving beams B0-B4 are respectively as follows: l_B0,i,1、l_B1,i,2、l_B2,i,3、l_B3,i,4、l_B4,i,1。

In a third embodiment, when M < P, the terminal device receives P symbols included in each set of reference signals using M reception beams, including: dividing the P symbols into M groups, and using the M receiving beams by the terminal equipment to receive the M groups of symbols in the ith set of reference signals, wherein one receiving beam corresponds to one group of symbols, i is a positive integer less than or equal to N, and the group of symbols received by at least one receiving beam in the M receiving beams comprises a plurality of symbols.

Optionally, the signal quality parameter of a group of symbols received by the jth receiving beam of the M receiving beams may be determined by, but is not limited to, the following methods:

the method comprises the following steps: an average of the signal quality parameters of all symbols in the set of symbols received by the jth receive beam.

The second method comprises the following steps: the j is a positive integer less than or equal to M, and the j is the maximum value of the signal quality parameters of all the symbols in the group of symbols received by the jth receiving beam.

For example, each set of CSI-RS contains 8 symbols, the terminal device manages 4 reception beams B0-B3, and the terminal device may receive the symbols of the ith set of CSI-RS by: the terminal device divides the 8 symbols into 4 groups and receives 4 groups of symbols in the ith set of CSI-RS by using the 4 receiving beams B0-B3 respectively. Such as: the first and second symbols are received using the first receive beam B0, the third and fourth symbols are received using the second receive beam B1, the fifth and sixth symbols are received using the third receive beam B2, and the seventh and eighth symbols are received using the fourth receive beam B3.

The method for determining the signal quality parameters of the first group of symbols in the ith set of CSI-RS received by the first receiving beam in the 4 receiving beams by the terminal equipment comprises the following steps: determining a signal quality parameter l for a beam B0 in the first group to receive a first symbol and a second symbol in an ith set of CSI-RSs respectively_B0,i,1、l_B0,i,2. When the terminal device uses the first method, the signal quality parameter of the first group of symbols received by the first receiving beam satisfies the formula Z_{B0, i, group 1}＝（l_B0，i，1+l_B0，i，2) 2; when the terminal device uses the second method, the signal quality parameter of the first group of symbols received by the first receiving beam satisfies the formula Z_{B0, i, group 1}＝max{l_B0，i，1，l_B0，i，2}。

Optionally, the signal quality parameter of any one reference signal is at least one or a combination of the following: reference signal received power, RSRP, of the reference signal, signal strength of the reference signal, reference signal received quality, RSRQ, of the reference signal.

S603: and the terminal equipment determines the transmission quality parameters of each set of reference signals according to the signal quality parameters of the P symbols contained in each set of reference signals received by using the M receiving beams, wherein the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission.

In step S602, in the case of the first embodiment where M is equal to P or the second embodiment where M > P, optionally, when the terminal device executes S603, the terminal device may determine the transmission quality parameter of the ith set of reference signals through the following steps c1-c 2.

c 1: the terminal equipment determines the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

c 2: and the terminal equipment determines the transmission quality parameters of the ith set of reference signals according to the signal quality parameters of the P symbols in the ith set of reference signals received by using the M receiving beams.

Alternatively, the terminal device may perform step c2 by, but not limited to, the following methods.

The method comprises the following steps: the terminal device determines that the transmission quality parameter of the ith set of reference signals is the maximum value of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams.

The second method comprises the following steps: the terminal device calculates an average value of signal quality parameters of P symbols in an ith set of reference signals received by using M receiving beams, and determines the transmission quality parameters of the ith set of reference signals as the average value.

The third method comprises the following steps: the terminal device calculates the sum of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams, and determines the transmission quality parameter of the ith set of reference signals as the sum.

For example, the terminal device determines that the signal quality parameters of 4 symbols in the ith set of CSI-RS received by using 4 receiving beams are respectively l_B0,i,1、l_B1,i,2、l_B2,i,3、l_B3,i,4. When the terminal equipment uses the method one, the transmission quality parameter of the ith set of CSI-RS is determined to meet the formula Q_i＝max{l_B0，i，1，l_B1，i，2，l_B2，i，3，l_B3，i，4}. When the terminal equipment uses the second method, determining that the transmission quality parameter of the ith set of CSI-RS meets the formula Q_i＝(l_B0，i，1+l_B1，i，2+l_B2，i，3+l_B3，i，4)/4. When the terminal is providedWhen the third method is used, the transmission quality parameter of the ith set of CSI-RS is determined to meet the formula Q_i＝l_B0，i，1+l_B1，i，2+l_B2，i，3+l_B3，i，4。

In the above step S602, in the case of the third embodiment of M < P, optionally, the terminal device may determine the transmission quality parameters of the ith set of reference signals through the following steps d1-d2 when performing S603.

d 1: the terminal equipment determines the signal quality parameters of M groups of symbols in the ith set of reference signals received by using M receiving beams from the signal quality parameters of M groups of symbols contained in each set of reference signals received by using the M receiving beams;

d 2: the determining, by the terminal device, the transmission quality parameter of the ith reference signal according to the signal quality parameters of M groups of symbols in the ith set of reference signals received by using the M receiving beams includes:

alternatively, the terminal device may perform step d2 by, but not limited to, the following methods.

The method comprises the following steps: a maximum value of the signal quality parameters of the M groups of symbols in the ith set of reference signals received using the M receive beams.

The second method comprises the following steps: the terminal device calculates an average value of signal quality parameters of M groups of symbols in the ith set of reference signals received by using the M receiving beams, and determines the transmission quality parameters of the ith set of reference signals as the average value.

The third method comprises the following steps: the terminal device calculates the sum of the signal quality parameters of M groups of symbols in the ith set of reference signals received by using the M receiving beams, and determines the transmission quality parameter of the ith set of reference signals as the sum.

For example, in the third embodiment example in step S602, it can be determined that the signal quality parameter when the first receiving beam of the 4 receiving beams B0-B3 receives the first group of symbols in the ith set of CSI-RS is Z_{B0, i, group 1}(ii) a The second receiving beam receivesThe signal quality parameter of the second group of symbols in the i sets of CSI-RS is Z_{B1, i, group 2}(ii) a The signal quality parameter of the third group of symbols in the ith set of CSI-RS received by the third receiving beam is Z_{B2, i, group 3}(ii) a The signal quality parameter of the fourth group of symbols in the ith set of CSI-RS received by the fourth receiving beam is Z_{B3, i, group 4}；

Therefore, when the terminal device uses the first method, it is determined that the transmission quality parameter of the i-th set of CSI-RS satisfies the formula Q_i＝max{Z_{B0, i, group 1}，Z_{B1, i, group 2}，Z_{B2, i, group 3}，Z_{B3, i, group 4}}; when the terminal equipment uses the second method, the transmission quality parameter of the ith set of CSI-RS is determined to meet the formula Q_i＝max{Z_{B0, i, group 1}，Z_{B1, i, group 2}，Z_{B2, i, group 3}，Z_{B3, i, group 4}) (ii)/4; when the terminal equipment uses the third method, determining that the transmission quality parameter of the ith set of CSI-RS meets the formula Q_i＝Z_{B0, i, group 1}+Z_{B1, i, group 2}+Z_{B2, i, group 3}+Z_{B3, i, group 4}。

S604: and the terminal equipment transmits a measurement result to the base station by using N uplink transmission beams, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals. And the base station receives the measurement result sent by the terminal equipment.

S605: the base station selects a target reference signal with the maximum transmission quality parameter from the N sets of reference signals; and the base station determines the transmitting beam for transmitting the target reference signal as a downlink transmitting beam in the N transmitting beams.

In an embodiment, the base station determines a set of reference signals with the largest transmission quality parameter according to the transmission quality parameters of the N sets of reference signals included in the measurement result sent by the terminal device, so that the base station uses the beam used for sending the set of reference signals as a downlink sending beam.

Through the above steps S601 to S605, the base station can adjust the downlink transmission beam. In S605, the base station may use a beam for transmitting a set of reference signals with the largest transmission quality parameter as a downlink transmission beam, and ensure that the transmission efficiency of signals of the downlink transmission beam is optimal.

The communication system may further perform the following step S606, so that the terminal device may adjust the downlink receiving beam.

S606: the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of the P symbols contained in each set of reference signals received by the M receiving beams, and takes the receiving beam with the maximum receiving quality parameter as a downlink receiving beam.

Optionally, when performing S606, the terminal device may determine the reception quality parameters of the k reception beams through the following steps e1-e 2.

e 1: the terminal equipment determines the signal quality parameters of all symbols received by using a k-th receiving beam from the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

e 2: and the terminal equipment determines the receiving quality parameter of the k receiving beam according to the signal quality parameters of all the symbols received by using the k receiving beam.

Alternatively, the terminal device may perform step e2 by, but not limited to, the following methods.

The method comprises the following steps: the terminal device determines that the reception quality parameter of the kth receiving beam is: the maximum value among the signal quality parameters of all symbols received using the k-th receive beam.

The second method comprises the following steps: the terminal device calculates an average value of signal quality parameters of all symbols received using a kth reception beam, and determines the reception quality parameter of the kth reception beam as the average value.

The third method comprises the following steps: the terminal device calculates a sum of signal quality parameters of all symbols received using a kth receive beam and determines the reception quality parameter of the kth receive beam to be the sum.

For example, for each set of CSI-RS, the terminal device determines that the signal quality parameter of the v-th symbol included in each set of CSI-RS of the N sets of CSI-RS received by using the k-th receiving beam is l_k,1,v,l_k,2,v,......,l_k,N,v(ii) a When the terminal device uses the method one, the determined reception quality parameter of the kth reception beam satisfies the formula: z_k，v＝max{l_k，1，v，l_k，2，v，......，l_k，N，v}; when the terminal device uses the second method, the determined reception quality parameter of the kth reception beam satisfies the formula: z_k，v＝(l_k，1，v+l_k，2，v+......+l_k，N，v) N; when the terminal device uses the third method, the determined reception quality parameter of the kth reception beam satisfies the formula: z_k，v＝l_k，1，v+l_k，2，v+......+l_k，N，v。

Through the above step S606, the terminal device may adjust the downlink receiving beam, and in S606, the terminal device uses the receiving beam with the largest receiving quality parameter as the downlink receiving beam according to the determined receiving quality parameters of the M receiving beams. Therefore, the effect of receiving signals by the terminal equipment is best after the position of the terminal equipment is changed.

The application provides a beam determination method. The method is applied to the beam adjustment process, and comprises the following steps: the base station periodically transmits N sets of reference signals to the terminal equipment by using N transmitting beams; then, the terminal equipment receives P symbols contained in each set of reference signals by using M receiving beams aiming at each set of reference signals, and determines signal quality parameters of the P symbols contained in each set of reference signals; then, according to the signal quality parameters of P symbols contained in each set of reference signals, determining the transmission quality parameters of N sets of reference signals and the receiving quality parameters of M receiving beams; then, the initial uplink transmission wave beam is used for transmitting a measurement result to a base station, the base station determines a set of reference signals with the maximum transmission quality parameters according to the measurement result, and the wave beam used for transmitting the set of reference signals is used as a downlink transmission wave beam; and finally, the terminal equipment determines the receiving beam with the maximum receiving quality parameter according to the receiving quality parameters of the M receiving beams, and takes the receiving beam as a downlink receiving beam. Therefore, the base station can adjust the downlink transmitting beam and the downlink receiving beam by the terminal equipment only by sending the reference signal to the terminal equipment once, the time consumption of the whole beam adjustment process is short, the transmission quality of the adjusted beam signal is good, and the transmission efficiency of the service data is improved.

Based on the embodiment shown in fig. 6A, the present application also provides an example of beam determination. As shown in fig. 6B. Wherein, the base station manages 5 beams: beam a0-a4, the terminal device managing 4 beams: B0-B3. The beam adjustment procedure includes the following:

1. the base station configures a group of CRI-RSs, wherein the group of CRI-RSs comprises 5 sets of CRI-RSs. Each set of CRI-RS corresponds to a beam. The base station transmits its corresponding CRI-RS using the managed 5 beams, respectively. Beams a0-a4 each correspond to one of 5 sets of reference signals (CRI-RS 0-CRI-RS4 in the figure), with different sets of CRI-RS having different signal sequences, illustratively each set of CRI-RS containing 4 symbols in the time domain.

2. When receiving each set of CRI-RS (CRI-RS 2 for example) in 5 sets of reference signals, the terminal device receives different symbols in the CRI-RS using different downlink receiving beams. For example, the first symbol of CSI-RS2 is received using beam B0, … …, and the fourth symbol of CRI-RS2 is received using beam B3. The terminal device determines signal quality parameters of 4 symbols contained in the CRI-RS2, respectively.

3. The terminal device performs the method in S603 in the embodiment shown in fig. 6A, and determines the transmission quality parameter of each set of CRI-RS according to the signal quality parameters of 4 symbols contained in each set of CRI-RS received using 4 reception beams. And the terminal sends a measurement result to the base station by using the initial uplink sending beam, wherein the measurement result comprises 5 sets of CRI-RS transmission quality parameters.

4. The base station receives the measurement result of 5 sets of SSBs sent by the terminal device by using the initial uplink reception beam, and determines a target CRI-RS (CRI-RS 3 for example) with the largest transmission quality parameter according to the measurement result, and the base station determines a beam A3 corresponding to the CRI-RS3 for sending as the latest downlink transmission beam. And the base station completes the adjustment of the downlink transmission beam of the terminal equipment.

5. The terminal device executes the method in S606 in the embodiment shown in fig. 6A, and determines the reception quality parameters of 4 reception beams according to the signal quality parameters of 4 symbols included in each set of CRI-RS received by the 4 reception beams. The terminal device sets the reception beam with the largest reception quality parameter (for example, reception beam B0 in the figure) as a downlink reception beam. At this point, the terminal device completes adjustment of the downlink receiving beam.

Based on the same technical concept, the embodiment of the present application further provides a communication device, the structure of which is shown in fig. 8, and the communication device includes a communication unit 801 and a processing unit 802. The communication apparatus may be applied to a base station or a terminal device in the communication system shown in fig. 3, and may implement the beam determination methods shown in fig. 5A and fig. 6A above. The functions of the various units in the device 800 are described below.

First, the functions of the units when the communication apparatus 800 is applied to a terminal device will be described.

When the terminal device is in the initial beam determination process, the functions of each unit in the communication apparatus 800 are as follows:

a communication unit 801, configured to receive a reference signal transmitted by a base station using each of M receive beams, where M is an integer greater than 1;

a processing unit 802 for determining signal quality parameters of reference signals received using the M receive beams; determining the receiving quality parameters of the M receiving beams according to the signal quality parameters of the reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam; determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams; and determining an uplink transmission beam according to the downlink receiving beam, wherein the uplink transmission beam and the downlink receiving beam have the same antenna array coefficient.

In one embodiment, when receiving a reference signal transmitted by a base station using each of M receive beams, the communication unit 801 is specifically configured to:

the processing unit 802, when determining the signal quality parameters of the reference signals received using the M receiving beams, is specifically configured to:

In an embodiment, when determining the reception quality parameters of the M reception beams according to the signal quality parameters of the reference signals received by using the M reception beams, the processing unit 802 is specifically configured to:

determining a reception quality parameter of the ith reception beam to be a maximum value among the signal quality parameters of the N sets of reference signals received using the ith reception beam; or

Calculating a sum of signal quality parameters of the N sets of reference signals received using an ith receive beam and determining the receive quality parameter of the ith receive beam to be the sum.

In one embodiment, the processing unit 802 is further configured to:

after determining the signal quality parameters of N sets of reference signals received by using M receiving beams, determining the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using M receiving beams, wherein the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission; selecting a target reference signal with the maximum transmission quality parameter from the N sets of reference signals, and determining a target lead code corresponding to the target reference signal;

the communication unit 801 is further configured to:

and sending the target lead code to the base station so that the base station determines a downlink sending beam according to the target lead code.

In an embodiment, when determining the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using M receiving beams, the processing unit 802 is specifically configured to:

determining a signal quality parameter of a jth set of reference signals received by using M receiving beams in signal quality parameters of N sets of reference signals respectively received by using M receiving beams; wherein j is a positive integer less than or equal to N;

And calculating the sum of the signal quality parameters of the j set of reference signals received by using the M receiving beams, and determining the transmission quality parameter of the j set of reference signals as the sum.

In one embodiment, the signal quality parameter of any one of the reference signals is at least one or a combination of:

When the terminal device is in the process of beam adjustment, the functions of each unit in the communication apparatus 800 are as follows:

a communication unit 801, configured to receive, for each of N sets of reference signals transmitted by a base station, P symbols included in each set of reference signals using M reception beams, where at least two symbols in the P symbols included in each set of reference signals are received using different reception beams; the base station is further configured to send a measurement result to the base station, so that the base station determines a downlink transmission beam according to the measurement result, where the measurement result includes transmission quality parameters of the N sets of reference signals;

a processing unit 802, configured to determine signal quality parameters of P symbols included in each set of reference signals received using M receive beams; determining the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission; the terminal device is further configured to determine, according to signal quality parameters of P symbols included in each set of reference signals received by using M receive beams, the receive quality parameters of the M receive beams, where the receive quality parameter of any receive beam is used to characterize the signal quality of the reference signal received by the terminal device using the receive beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam among the M receiving beams.

In one embodiment, when M is equal to P, the communication unit 801, when receiving P symbols included in each set of reference signals using M receive beams, is specifically configured to: receiving P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N; or

In one embodiment, when M<When P is received, the communication unit 801 is specifically configured to, when P symbols included in each set of reference signals are received using M reception beams: the communication unit receives P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

the processing unit 802, when determining the transmission quality parameter of each set of reference signals according to the signal quality parameters of P symbols included in each set of reference signals received by using M receiving beams, is specifically configured to:

In one embodiment, when M > P, the communication unit 801, when receiving P symbols included in each set of reference signals using M receive beams, is further configured to:

In an embodiment, when determining the reception quality parameters of the M reception beams according to the signal quality parameters of the P symbols included in each set of reference signals received by using the M reception beams, the processing unit 802 is specifically configured to:

Calculating an average value of signal quality parameters of all symbols received by using a kth receiving beam, and determining the receiving quality parameter of the kth receiving beam as the average value;

The functions of each unit in the communication apparatus 800 during the beam adjustment process of the base station are described in detail below.

A communication unit 801, configured to transmit N sets of reference signals using N transmit beams, where one transmit beam corresponds to one set of reference signals, each set of reference signals includes P symbols in a time domain, and N and P are integers greater than 1; the terminal equipment is further used for receiving a measurement result sent by the terminal equipment, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals; the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission;

a processing unit 802, configured to select a target reference signal with a largest transmission quality parameter from the N sets of reference signals; and determining the transmission beam for transmitting the target reference signal as a downlink transmission beam in the N transmission beams.

In one embodiment, when the communication unit 801 transmits N sets of reference signals using N transmission beams, the communication unit is specifically configured to:

and periodically transmitting the N sets of reference signals by using the N transmission beams.

It should be noted that, in the above embodiments of the present application, the division of the module is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or may exist alone physically, or two or more units are integrated in one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Based on the same technical concept, embodiments of the present application further provide a communication device, which may be applied to a base station or a terminal device in the communication system shown in fig. 3, and may implement the initial beam determination method shown in fig. 5A and the beam adjustment method shown in fig. 6A. Referring to fig. 9, the communication network apparatus includes: a transceiver 901, a processor 902, and a memory 903. Wherein, the transceiver 901, the processor 902 and the memory 903 are connected to each other.

Optionally, the transceiver 901, the processor 902 and the memory 903 are connected to each other through a bus 904. The bus 904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

The transceiver 901 is configured to receive and transmit signals using beams, so as to implement communication interaction with other devices.

The processor 902 is configured to implement the beam determination method shown in fig. 5A and fig. 6A.

In an embodiment, when the communication device 900 is a terminal device, in an initial beam determination process, the processor 902 is specifically configured to:

the processor 902 is configured to control the transceiver 901 to receive a reference signal transmitted by a base station using each of M receive beams, where M is an integer greater than 1; determining a signal quality parameter for a reference signal received using the M receive beams; determining the receiving quality parameters of the M receiving beams according to the signal quality parameters of the reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams; and determining an uplink transmission beam according to the downlink receiving beam, wherein the uplink transmission beam and the downlink receiving beam have the same antenna array coefficient.

In another embodiment, when the communication device 900 is a terminal device, in the beam adjustment process, the processor 902 is specifically configured to:

controlling the transceiver 901 to receive, for each of N sets of reference signals transmitted by a base station, P symbols included in each set of reference signals using M reception beams, where at least two symbols of the P symbols included in each set of reference signals are received using different reception beams;

the processor 902 is configured to determine signal quality parameters of P symbols included in each set of reference signals received using M receive beams; determining the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission; controlling the transceiver 901 to send a measurement result to the base station, so that the base station determines a downlink transmission beam according to the measurement result, wherein the measurement result includes transmission quality parameters of the N sets of reference signals;

determining the receiving quality parameters of the M receiving beams according to the signal quality parameters of the P symbols contained in each set of reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam among the M receiving beams.

In another embodiment, when the communication device 900 is a base station, in the beam adjustment process, the processor 902 is specifically configured to:

controlling the transceiver 901 to transmit N sets of reference signals using N transmit beams, where one transmit beam corresponds to one set of reference signals, each set of reference signals includes P symbols in a time domain, and N and P are integers greater than 1; and controlling the transceiver 901 to receive a measurement result sent by a terminal device, where the measurement result includes transmission quality parameters of the N sets of reference signals; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission;

selecting a target reference signal with the maximum transmission quality parameter from the N sets of reference signals;

and determining the transmission beam for transmitting the target reference signal as a downlink transmission beam in the N transmission beams.

A memory 903 for storing program instructions and data, etc. In particular, the program instructions may include program code comprising computer operational instructions. The memory 903 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 902 executes the program instructions stored in the memory 903 and uses the data stored in the memory 903 to implement the above functions, thereby implementing the beam determination method provided in the above embodiments.

Based on the above embodiments, the embodiments of the present application further provide a computer program, which when run on a computer, causes the computer to execute the beam determination methods provided by the embodiments shown in fig. 5A and fig. 6A.

Based on the above embodiments, the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a computer, the computer program causes the computer to execute the beam determination method provided in the embodiments shown in fig. 5A and fig. 6A.

Based on the above embodiments, the embodiments of the present application further provide a chip, where the chip is used to read a computer program stored in a memory, and implement the beam determination methods provided in the embodiments shown in fig. 5A and fig. 6A.

Based on the foregoing embodiments, an embodiment of the present application provides a chip system, where the chip system includes a processor, and is configured to support a computer device to implement the functions related to the base station or the terminal device in the embodiments shown in fig. 5A and fig. 6A. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the computer device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

In summary, the present application provides a method and an apparatus for determining a beam. In this scheme, the initial beam determination process includes: the base station sends N sets of reference signals to the terminal equipment, and the terminal equipment receives the N sets of reference signals by using each receiving beam in M receiving beams; the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of the N sets of reference signals respectively received by the M receiving beams, selects the receiving beam with the maximum receiving quality parameter as a downlink receiving beam, and takes the downlink receiving beam as an uplink sending beam. Because the receiving quality parameter of the downlink receiving beam selected by the terminal device is the largest, which indicates that the signal transmission efficiency of the downlink receiving beam is higher, the probability that the downlink receiving beam is aligned with the base station is higher, and therefore, the terminal device uses the downlink receiving beam as the uplink sending beam to send signals such as a lead code, and the like, and can also improve the transmission efficiency of the lead code, thereby improving the probability that the base station receives the signals sent by the terminal device. In summary, the method can improve the probability that the uplink transmission beam selected by the terminal device is aligned to the base station in the initial beam determination process, thereby improving the success of the base station receiving the signal transmitted by the terminal device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may 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, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for beam determination, comprising:

the terminal equipment receives a reference signal sent by a base station by using each receiving beam in M receiving beams, wherein M is an integer larger than 1;

the terminal device determining signal quality parameters of reference signals received using the M receive beams;

the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of the reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam;

2. The method of claim 1, wherein the terminal device receives the reference signal transmitted by the base station using each of the M receive beams, comprising:

the terminal equipment receives N sets of reference signals sent by the base station in M reference signal periods by using the M receiving beams, wherein one receiving beam corresponds to N sets of reference signals in one reference signal period, the N sets of reference signals are sent by N sending beams in the base station, and N is an integer greater than 1;

the terminal device determining the signal quality parameters of the reference signals received by using the M receiving beams comprises the following steps:

the terminal device determines signal quality parameters of N sets of reference signals received using M receive beams.

3. The method of claim 2, wherein the terminal device determining the reception quality parameters for the M receive beams based on the signal quality parameters for the reference signals received using the M receive beams comprises:

the terminal equipment determines the signal quality parameters of the N sets of reference signals received by the ith receiving beam from the signal quality parameters of the N sets of reference signals received by the M receiving beams, wherein i is a positive integer less than or equal to M;

the terminal equipment determines the reception quality parameter of the ith receiving beam as the maximum value in the signal quality parameters of the N sets of reference signals received by using the ith receiving beam; or

The terminal equipment calculates the average value of the signal quality parameters of the N sets of reference signals received by using the ith receiving beam, and determines the receiving quality parameter of the ith receiving beam as the average value; or alternatively

The terminal device calculates the sum of the signal quality parameters of the N sets of reference signals received by using the ith receiving beam, and determines the receiving quality parameter of the ith receiving beam as the sum.

4. The method of claim 2, wherein after the terminal device determines the signal quality parameters for N sets of reference signals received using M receive beams, the method further comprises:

the terminal equipment selects a target reference signal with the maximum transmission quality parameter from the N sets of reference signals, and determines a target lead code corresponding to the target reference signal;

and the terminal equipment uses the uplink transmission beam to transmit the target lead code to the base station, so that the base station determines a downlink transmission beam according to the target lead code.

5. The method of claim 4, wherein the terminal device determines the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received by using M receiving beams, and comprises:

the terminal equipment determines the signal quality parameters of the jth set of reference signals received by using M receiving beams in the signal quality parameters of N sets of reference signals respectively received by using M receiving beams; wherein j is a positive integer less than or equal to N;

the terminal equipment determines that the transmission quality parameter of the jth set of reference signals is the maximum value in the signal quality parameters of the jth set of reference signals received by using M receiving beams; or

The terminal equipment calculates the average value of the signal quality parameters of the jth set of reference signals received by using M receiving beams, and determines the transmission quality parameters of the jth set of reference signals as the average value; or alternatively

The terminal equipment calculates the sum of the signal quality parameters of the j reference signal sets received by using the M receiving beams, and determines the transmission quality parameter of the j reference signal sets as the sum.

6. The method according to any of claims 1-5, wherein the signal quality parameter of any one of the reference signals is at least one or a combination of:

7. A method for beam determination, comprising:

the base station receives a measurement result sent by terminal equipment, wherein the measurement result comprises transmission quality parameters of the N sets of reference signals; the transmission quality parameters of each set of reference signals are determined according to the signal quality parameters of P symbols contained in the set of reference signals received by the terminal device by using M receiving beams, at least two symbols exist in the P symbols contained in each set of reference signals and are received by the terminal device by using different receiving beams, M is an integer greater than 1, and the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission;

8. The method of claim 7, wherein the base station transmits N sets of reference signals using N transmit beams, comprising:

9. A method for beam determination, comprising:

the method comprises the steps that the terminal equipment receives P symbols contained in each set of reference signals by using M receiving beams aiming at each set of reference signals in N sets of reference signals sent by a base station, wherein at least two symbols in the P symbols contained in each set of reference signals are received by using different receiving beams; m, N and P are both integers greater than 1;

the terminal equipment determines the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission;

the terminal equipment sends a measurement result to the base station so that the base station determines a downlink sending beam according to the measurement result, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals;

the terminal equipment determines the receiving quality parameters of the M receiving beams according to the signal quality parameters of the P symbols contained in each set of reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signal received by the terminal equipment by using the receiving beam;

10. The method of claim 9,

when M is equal to P, the terminal device receives P symbols included in each set of reference signals by using M reception beams, including: the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N; or

When M is>When P, the terminal device receives P symbols included in each set of reference signals by using M receive beams, including: the terminal equipment receives P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

the terminal equipment determines that the transmission quality parameter of the ith set of reference signals is the maximum value of the signal quality parameters of P symbols in the ith set of reference signals received by using M receiving beams; or

11. The method of claim 9, wherein when M < P, the terminal device receives P symbols for each set of reference signals using M receive beams, comprising:

the terminal equipment determines that the transmission quality parameter of the ith reference signal is as follows: a maximum of the signal quality parameters for the M groups of symbols in the ith set of reference signals received using the M receive beams; or

12. The method according to any of claims 9-11, wherein the terminal device determines the reception quality parameters for M reception beams based on the signal quality parameters for P symbols included in each set of reference signals received using the M reception beams, comprising:

the terminal equipment determines the signal quality parameters of all symbols received by using a k-th receiving beam from the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams;

the terminal device determines that the reception quality parameter of the kth receiving beam is: a maximum value among the signal quality parameters of all symbols received using the k-th reception beam; or

The terminal equipment calculates the average value of the signal quality parameters of all the symbols received by using the kth receiving beam, and determines the receiving quality parameter of the kth receiving beam as the average value;

the terminal device calculates a sum of signal quality parameters of all symbols received using a kth receive beam and determines the reception quality parameter of the kth receive beam to be the sum.

13. The method according to any of claims 9-11, wherein the signal quality parameter of any one of the reference signals is at least one or a combination of:

14. A terminal device, comprising:

a processor for determining signal quality parameters for reference signals received using the M receive beams; determining the receiving quality parameters of the M receiving beams according to the signal quality parameters of the reference signals received by the M receiving beams, wherein the receiving quality parameter of any receiving beam is used for representing the signal quality of the reference signals received by the terminal equipment by using the receiving beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam in the M receiving beams; and determining an uplink transmission beam according to the downlink receiving beam, wherein the uplink transmission beam and the downlink receiving beam have the same antenna array coefficient.

15. The terminal device of claim 14, wherein the transceiver, when receiving the reference signal transmitted by the base station using each of the M receive beams, is specifically configured to:

16. The terminal device of claim 15, wherein the processor, when determining the reception quality parameters for the M receive beams based on the signal quality parameters for the reference signals received using the M receive beams, is specifically configured to:

Calculating an average value of the signal quality parameters of the N sets of reference signals received by using the ith receiving beam, and determining the receiving quality parameter of the ith receiving beam as the average value; or alternatively

17. The terminal device of claim 15, wherein the processor is further configured to:

the transceiver is further configured to:

18. The terminal device of claim 17, wherein the processor, when determining the transmission quality parameters of the N sets of reference signals according to the signal quality parameters of the N sets of reference signals received using the M receive beams, is specifically configured to:

19. A terminal device according to any of claims 14-18, wherein the signal quality parameter of any one of the reference signals is at least one or a combination of:

20. A base station, comprising:

a transceiver, configured to transmit N sets of reference signals using N transmit beams, where one transmit beam corresponds to one set of reference signals, each set of reference signals includes P symbols in a time domain, and N and P are integers greater than 1; receiving a measurement result sent by the terminal equipment, wherein the measurement result comprises the transmission quality parameters of the N sets of reference signals; the transmission quality parameters of each set of reference signals are determined according to the signal quality parameters of P symbols contained in the set of reference signals received by the terminal device by using M receiving beams, at least two symbols exist in the P symbols contained in each set of reference signals and are received by the terminal device by using different receiving beams, M is an integer greater than 1, and the transmission quality parameters of any set of reference signals are used for representing the signal quality of the set of reference signals after transmission;

21. The base station of claim 20, wherein the transceiver, when transmitting N sets of reference signals using N transmit beams, is specifically configured to:

22. A terminal device, comprising:

a transceiver, configured to receive, for each of N sets of reference signals transmitted by a base station, P symbols included in each set of reference signals using M reception beams, where at least two symbols of the P symbols included in each set of reference signals are received using different reception beams; the base station is further configured to send a measurement result to the base station, so that the base station determines a downlink transmission beam according to the measurement result, where the measurement result includes transmission quality parameters of the N sets of reference signals; m, N and P are both integers greater than 1;

a processor for determining signal quality parameters for P symbols contained in each set of reference signals received using M receive beams; determining the transmission quality parameters of each set of reference signals according to the signal quality parameters of P symbols contained in each set of reference signals received by using M receiving beams; the transmission quality parameter of any set of reference signals is used for representing the signal quality of the set of reference signals after transmission; the terminal device is further configured to determine, according to signal quality parameters of P symbols included in each set of reference signals received by using M receive beams, the receive quality parameters of the M receive beams, where the receive quality parameter of any receive beam is used to characterize the signal quality of the reference signal received by the terminal device using the receive beam; and determining the receiving beam with the maximum receiving quality parameter as a downlink receiving beam among the M receiving beams.

23. The terminal device of claim 22,

when M is equal to P, the transceiver, when receiving P symbols included in each set of reference signals using M receive beams, is specifically configured to: receiving P symbols in the ith set of reference signals by using the M receiving beams, wherein one receiving beam corresponds to one symbol, and i is a positive integer less than or equal to N; or

When M is<P, when the transceiver receives P symbols included in each set of reference signals using M receive beams, the transceiver is specifically configured to: receiving P symbols in the ith set of reference signals by using the M receiving beams continuously in S reference signal periods, wherein i is a positive integer less than or equal to N,

determining a transmission quality parameter of the ith set of reference signals as a maximum value among signal quality parameters of P symbols in the ith set of reference signals received using M receive beams; or

24. The terminal device of claim 23, wherein when M > P, the transceiver, when receiving P symbols included in each set of reference signals using M receive beams, is further configured to:

25. The terminal device according to any of claims 22-24, wherein the processor, when determining the reception quality parameters for M receive beams based on the signal quality parameters for P symbols included in each set of reference signals received using the M receive beams, is specifically configured to:

26. A terminal device according to any of claims 22-24, wherein the signal quality parameter for any of the reference signals is at least one or a combination of:

27. A computer-readable storage medium, in which a computer program is stored which, when run on an electronic device, causes the electronic device to perform the method of any one of claims 1-13.

28. A chip for reading a computer program stored in a memory for performing the method according to any one of claims 1 to 13.