CN110612670B

CN110612670B - Antenna selection method and device and terminal

Info

Publication number: CN110612670B
Application number: CN201780090514.2A
Authority: CN
Inventors: 李琦; 周映泉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-15
Filing date: 2017-06-15
Publication date: 2021-05-11
Anticipated expiration: 2037-06-15
Also published as: WO2018227468A1; CN110612670A

Abstract

The application discloses a method, a device and a terminal for selecting an antenna, which are used for solving the problem that the directivity and the antenna gain of the antenna are difficult to simultaneously solve in the prior art. The method can be applied to a terminal, wherein the terminal is provided with N directional antennas, and the N directional antennas are placed in a ring shape; the terminal acquires a first downlink signal parameter of each directional antenna of the N directional antennas, wherein the first downlink signal parameter comprises downlink signal strength and downlink signal quality. And the terminal selects M directional antennas from the N directional antennas as receiving antennas of the terminal according to the first downlink signal parameters, and selects L directional antennas from the M directional antennas as transmitting antennas of the terminal. The embodiment of the invention is applied to the communication between the terminal and the base station.

Description

Antenna selection method and device and terminal

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method, a device and a terminal for selecting an antenna.

Background

In a conventional wireless communication system, a directional antenna is generally used to improve the transmission/reception performance of a terminal. Because the directional antenna has the characteristics of strong electromagnetic waves transmitted and received in the directional direction and long radiation distance, when the directional direction of the directional antenna is set to point to a base station, the terminal can obtain higher antenna gain. However, the beam of the directional antenna is very narrow, and such an antenna increases the alignment difficulty of the antenna in the installation process, which increases the labor cost. Even if the installation is successful, the transceiving performance of the terminal is degraded according to the change of the surrounding environment. For example: the terminal is shielded by a building, or the terminal itself moves, or the network side equipment is adjusted, and the like. It can be seen that directional antennas have a problem of directional limitations.

In order to solve the problem of directional limitation of directional antennas, some manufacturers choose to use omni-directional antennas. This is because the omnidirectional antenna shows 360 degrees even radiation in the horizontal direction, consequently need not set up directional direction, and the installation technical difficulty is not big, can use manpower sparingly the cost. And the omnidirectional antenna can adapt to the change of the surrounding environment without direction adjustment. However, the omni-directional antenna has the characteristics of weak electromagnetic waves transmitted and received in various directions and short radiation distance, so that the transceiving performance of the terminal is also limited.

However, as the requirement of the user for the terminal performance is higher and higher, on the premise of solving the problem of the directivity of the terminal antenna, the improvement of the antenna gain becomes a problem to be solved urgently.

Disclosure of Invention

The application provides an antenna selection method, an antenna selection device and a terminal, which are used for solving the problem that the directivity of a terminal antenna is difficult to improve and the antenna gain in each direction can be improved.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides an antenna selection method, which is applied to a terminal, where the terminal has N directional antennas disposed in a loop, and a directional direction of each directional antenna is set to be perpendicular to a tangential direction of the loop and to point to an outside of the loop, and the method includes: the terminal acquires a first downlink signal parameter of each directional antenna of the N directional antennas, selects M directional antennas from the N directional antennas as receiving antennas of the terminal according to the first downlink signal parameter, and selects L directional antennas from the M directional antennas as transmitting antennas of the terminal. Therefore, the terminal can obtain a signal radiation range of 360 degrees by annularly placing the N directional antennas, and the directional antenna with the highest first downlink signal parameter is determined to be the receiving antenna and the transmitting antenna of the terminal from the N directional antennas according to the first downlink signal parameter, so that the antenna gain of the terminal is improved, and the improvement of the communication quality of the terminal is facilitated.

The first downlink signal parameter includes downlink signal quality or downlink signal strength. N is more than or equal to 2, N is more than or equal to M and more than or equal to L, and L, M, N is a positive integer.

In one possible design, the terminal may divide the N directional antennas into P groups, where each group includes M directional antennas, before the terminal obtains the first downlink signal parameters for each of the N directional antennas. Therefore, the terminal determines the receiving antenna group by taking the grouping as a unit, so that the combination number of the directional antennas can be reduced, the number of switches required in specific implementation is reduced, and the selection process of the terminal is facilitated to be simplified.

In one possible design, if the terminal groups N directional antennas, the terminal may obtain an average value of the first downlink signal parameter of each group according to the first downlink signal parameter of each directional antenna. And then selecting the group with the maximum average value of the first downlink signal parameters of each group as a first group, and selecting M directional antennas included in the first group as receiving antennas of the terminal. And sequencing the M directional antennas in the first group from high to low according to the first downlink signal parameter, and selecting the largest L directional antennas as the transmitting antennas of the terminal. Therefore, the terminal has the directional antenna with the best signal strength or quality as the receiving antenna and the transmitting antenna, so that the transceiving performance of the terminal is improved, and the communication quality of the terminal is improved.

In one possible design, the terminal performs periodic detection on M directional antennas included in the first packet to obtain a second downlink signal parameter. If the average value of the second downlink signal parameter of the first group is compared with the average value of the first downlink signal parameter of the first group, and the drop amount is greater than the first threshold value, it indicates that the signal strength or quality of the directional antenna of the first group serving as the receiving antenna of the terminal is poor, and the terminal needs to re-determine the receiving antenna and the transmitting antenna. The terminal can measure the N directional antennas again to obtain a third downlink signal parameter. And selecting the directional antenna in the group with the maximum average value of the third downlink signal parameter from the P groups as a new receiving antenna and a new transmitting antenna. Therefore, when the signals of the directional antennas serving as the receiving antenna and the transmitting antenna are poor, the terminal can acquire the directional antenna with good signals again to serve as the receiving antenna and the transmitting antenna, so that the transceiving performance of the terminal is improved, and the communication quality of the terminal is improved.

In a possible design, the terminal periodically detects the N directional antennas, obtains a fourth downlink signal parameter of each directional antenna, further obtains an average value of the fourth downlink signal parameter of each group, directly selects the group with the largest average value of the fourth downlink signal parameter as a second group, selects M directional antennas included in the second group as new receiving antennas, and selects L directional antennas with the largest fourth downlink signal parameter among the M directional antennas as transmitting antennas. Therefore, when the signals of other directional antennas in the N directional antennas become good, the signals which are good are directly selected as the new receiving antenna and the new transmitting antenna of the terminal, so that the receiving and transmitting performance of the terminal is improved, and the communication quality of the terminal is improved.

In one possible design, before determining the M directional antennas in the second packet as the receiving antennas of the terminal, it may be determined whether an average value of the fourth downlink signal parameters of the second packet is greater than a certain degree, for example: and the average value of the fourth downlink signal parameter of the first group is larger than a first preset multiple of the average value of the fourth downlink signal parameter of the first group. And if so, re-determining the M directional antennas in the second grouping as receiving antennas of the terminal, wherein the L directional antennas with the maximum fourth downlink signal parameter are used as transmitting antennas of the terminal.

If the number of the antennas is less than or equal to the number of the antennas, the receiving antennas are not determined again. But a further determination is needed as to whether the transmit antennas need to be re-determined. Acquiring an average value of fourth downlink signal parameters of L directional antennas serving as transmitting antennas in the first group, namely a first average value; and the terminal sorts according to the fourth downlink signal parameters, selects the L directional antennas with the maximum fourth downlink signal parameters, and calculates the average value of the fourth downlink signal parameters of the L directional antennas, namely the second average value. And if the second average value is larger than a second preset multiple of the first average value, the terminal determines the L directional antennas as new transmitting antennas again. If the second average value is less than or equal to a second preset multiple of the first average value, the terminal does not need to determine the transmitting antenna again.

In one possible design, if the terminal does not group the N directional antennas, the terminal directly selects the M directional antennas with the largest first downlink signal parameter as the receiving antennas of the terminal, and selects the L directional antennas with the largest first downlink signal parameter as the transmitting antennas of the terminal.

In one possible design, the terminal obtains an average value, i.e., a third average value, of the first downlink signal parameters of the M directional antennas as the receiving antennas; the terminal periodically checks the M directional antennas, obtains a fifth downlink parameter, and obtains an average value of the fifth downlink parameters of the M directional antennas, that is, a fourth average value.

If the decrease amount of the fourth average value relative to the third average value is greater than the second threshold, which indicates that the signals of the M directional antennas as the receiving antennas are degraded, the terminal needs to re-determine the transmitting antennas of the receiving antennas. Therefore, the terminal detects all the N directional antennas and obtains the sixth downlink signal parameter of each directional antenna. And re-determining the receiving antenna and the transmitting antenna of the terminal according to the sixth downlink signal parameter of each directional antenna.

In a possible design, the terminal periodically detects all the N directional antennas, obtains a seventh downlink signal parameter of each directional antenna, selects M directional antennas with the largest seventh downlink signal parameter as receiving antennas of the terminal, and selects L directional antennas with the largest seventh downlink signal parameter as transmitting antennas of the terminal.

In one possible design, the terminal may obtain an average value, i.e., a fifth average value, of the first downlink signal parameters of the M directional antennas as the receiving antennas before determining whether to re-determine the new receiving antenna and the new transmitting antenna. And then obtaining an average value of the M directional antennas with the largest parameters according to the seventh downlink signal, namely a sixth average value. And if the sixth average value is larger than a third preset multiple of the fifth average value, the terminal determines the receiving antenna and the transmitting antenna of the terminal again.

If the sixth average value is equal to or less than the fifth average value, the terminal does not need to re-determine the receiving antenna, but needs to further judge whether the transmitting antenna needs to be re-determined. And acquiring an average value of the seventh downlink signal parameters of the L directional antennas as the transmitting antenna, namely a seventh average value. Then, L directional antennas with the largest seventh downlink signal parameter are obtained, and an average value of the seventh downlink signal parameters of the L directional antennas, that is, an eighth average value, is calculated.

And if the eighth average value is larger than a fourth preset multiple of the seventh average value, the terminal determines the first L directional antennas as the transmitting antennas of the terminal after sequencing according to the seventh downlink signal parameters. If the eighth average value is less than or equal to the fourth preset multiple of the seventh average value, the terminal does not need to determine the transmitting antenna again.

In a second aspect, an embodiment of the present application provides an antenna selection apparatus, where the apparatus has N directional antennas, and the N directional antennas are placed in a loop, and the apparatus further includes: a processing unit and a communication unit; the processing unit is used for acquiring a first downlink signal parameter of each directional antenna of the N directional antennas through the communication unit, wherein the first downlink signal parameter comprises downlink signal strength or downlink signal quality; and the processing unit is further used for determining M directional antennas from the N directional antennas as receiving antennas of the device and determining L directional antennas from the M directional antennas as transmitting antennas of the device according to the first downlink signal parameters of each directional antenna.

Wherein N is more than or equal to 2, N is more than or equal to M and more than or equal to L, and L, M, N is a positive integer.

In one possible design, the processing unit is further configured to divide the N directional antennas into P groups, where each group includes M directional antennas.

In one possible design, the processing unit is further configured to obtain an average value of the first downlink signal parameter of each of the P groups according to the first downlink signal parameter of each directional antenna; the processing unit is further configured to select M directional antennas included in a first packet of the P packets as receiving antennas of the apparatus, where the first packet is a packet of the P packets in which an average value of a first downlink signal parameter is the largest; and the processing unit is further configured to sort the first group of M directional antennas according to a descending order of the first downlink signal parameter, and select the first L directional antennas of the first group of M directional antennas as transmitting antennas of the apparatus.

In a possible design, the processing unit is further configured to use a first preset time period as a first period, obtain, through the communication unit, a second downlink signal parameter of each directional antenna in a first group in the first period again, and further obtain an average value of the second downlink signal parameters of the first group, where the second downlink signal parameter includes downlink signal strength or downlink signal quality; the processing unit is further configured to, if a decrease amount of the average value of the second downlink signal parameter of the first packet relative to the average value of the first downlink signal parameter of the first packet is greater than a first threshold, obtain, by the communication unit, a third downlink signal parameter of each of the N directional antennas in the first period again, so that the apparatus determines, again according to the third downlink signal parameter of each directional antenna, new M directional antennas as receiving antennas of the apparatus, and determines, again from the new M directional antennas, new L directional antennas as transmitting antennas of the apparatus; wherein the third downlink signal parameter includes downlink signal strength or downlink signal quality.

In a possible design, the processing unit is further configured to use a second preset time period as a second period, and obtain, by the communication unit, a fourth downlink signal parameter of each directional antenna of the N directional antennas in the second period again, so as to obtain an average value of the fourth downlink signal parameters of each of the P groups, where the fourth downlink signal parameter includes downlink signal strength or downlink signal quality; the processing unit is further configured to select M directional antennas included in a second packet of the P packets in a second period as receiving antennas of the apparatus, where the second packet is a packet of the P packets in which an average value of a fourth downlink signal parameter is the largest; and the processing unit is further configured to sort the M directional antennas grouped in the second group according to a sequence of the fourth downlink signal parameter from high to low, and select the first L directional antennas of the M directional antennas grouped in the second group in the second period as transmitting antennas of the apparatus.

In one possible design, the processing unit is further configured to determine that an average value of the fourth downlink signal parameter of the second packet is greater than a first preset multiple of an average value of the fourth downlink signal parameter of the first packet.

In one possible design, the processing unit is further configured to determine that M directional antennas included in the first packet are receive antennas of the apparatus; the processing unit is further configured to obtain a first average value, where the first average value is an average value of fourth downlink signal parameters of the L directional antennas in the first group; the processing unit is further configured to sequence the M directional antennas of the first group in a descending order of the fourth downlink signal parameter to obtain a second average value, where the second average value is an average value of the fourth downlink signal parameter of the first L directional antennas of the M directional antennas of the first group; and the processing unit is further configured to, if the second average value is greater than a second preset multiple of the first average value, re-determine, from high to low, the first L directional antennas of the M directional antennas of the first group as transmitting antennas of the apparatus according to the fourth downlink signal parameter.

In one possible design, the processing unit is further configured to sort the N directional antennas from high to low according to the first downlink signal parameter of each directional antenna, select the first M directional antennas of the N directional antennas as receiving antennas of the apparatus, and select the first L directional antennas of the M directional antennas as transmitting antennas of the apparatus.

In one possible design, the processing unit is further configured to obtain a third average value, where the third average value is an average value of the first downlink signal parameters of the M directional antennas; the processing unit is further configured to obtain, by using a third preset time period as a third period, a fifth downlink signal parameter and a fourth average value of the fifth downlink signal parameters of the M directional antennas in the third period again through the communication unit, where the fourth average value is an average value of the fifth downlink signal parameters of the M directional antennas, and the fifth downlink signal parameter includes downlink signal strength or downlink signal quality; the processing unit is further configured to, if a decrease amount of the fourth average value relative to the third average value is greater than a second threshold, re-obtain, by the communication unit, a sixth downlink signal parameter of each of the N directional antennas, so that the apparatus re-determines, according to the sixth downlink signal parameter of each of the N directional antennas, new M directional antennas as receiving antennas of the apparatus, and re-determines, from the new M directional antennas, new L directional antennas as transmitting antennas of the apparatus; the sixth downlink signal parameter includes downlink signal strength or downlink signal quality.

In a possible design, the processing unit is further configured to obtain, by using a fourth preset time period as a fourth period, a seventh downlink signal parameter of each of the N directional antennas in the fourth period again through the communication unit; and the processing unit is further configured to sort the N directional antennas from high to low according to the seventh downlink signal parameter of each directional antenna, reselect the first M directional antennas of the N directional antennas sorted this time as receiving antennas of the device, and reselect the first L directional antennas of the M directional antennas sorted this time as transmitting antennas of the device.

In one possible design, the processing unit is further configured to obtain a fifth average value and a sixth average value, where the fifth average value is an average value of the first downlink signal parameters of the M directional antennas determined according to the first downlink signal parameter; the sixth average value is the average value of the seventh downlink signal parameters of the first M directional antennas of the N directional antennas, which is determined according to the seventh downlink signal parameters; and the processing unit is further used for determining that the sixth average value is larger than a third preset multiple of the fifth average value.

In one possible design, the processing unit is further configured to determine M directional antennas determined according to the first downlink signal parameter as receiving antennas of the apparatus; the processing unit is further configured to obtain a seventh average value, where the seventh average value is an average value of seventh downlink signal parameters of the L directional antennas determined according to the first downlink signal parameter; the processing unit is further configured to sort the M directional antennas determined according to the first downlink signal parameter according to a sequence of the seventh downlink signal parameter from high to low, and obtain an eighth average value, where the eighth average value is an average value of the seventh downlink signal parameter of the first L directional antennas of the M directional antennas after the sorting; and the processing unit is further configured to re-determine, if the eighth average value is greater than a fourth preset multiple of the seventh average value, that the first L directional antennas of the M directional antennas after the ranking are the transmitting antennas of the apparatus.

In a third aspect, an embodiment of the present application provides an antenna selection terminal, where the terminal has N directional antennas, and the N directional antennas are placed in a loop, and the terminal further includes: a processor and a transceiver; the processor is used for acquiring a first downlink signal parameter of each directional antenna of the N directional antennas through the transceiver, wherein the first downlink signal parameter comprises downlink signal strength or downlink signal quality; and the processor is further used for determining M directional antennas from the N directional antennas as receiving antennas of the terminal and determining L directional antennas from the M directional antennas as transmitting antennas of the terminal according to the first downlink signal parameters of each directional antenna.

In one possible design, the processor may be further configured to divide the N directional antennas into P groups, where each group includes M directional antennas.

In one possible design, the processor is further configured to obtain an average value of the first downlink signal parameter of each of the P groups according to the first downlink signal parameter of each directional antenna; the processor is further configured to select M directional antennas included in a first packet of the P packets as receiving antennas of the terminal, where the first packet is a packet of the P packets in which an average value of a first downlink signal parameter is the largest; and the processor is further used for sequencing the M directional antennas of the first group according to the descending order of the first descending signal parameter, and selecting the first L directional antennas of the M directional antennas of the first group as the transmitting antennas of the terminal.

In one possible design, the processor is further configured to use a first preset time period as a first period, obtain, by the transceiver, a second downlink signal parameter of each directional antenna in a first group in the first period again, and further obtain an average value of the second downlink signal parameters of the first group, where the second downlink signal parameter includes downlink signal strength or downlink signal quality; the processor is further configured to obtain, by the transceiver again, a third downlink signal parameter of each of the N directional antennas in the first period if a decrease amount of the average value of the second downlink signal parameter of the first group with respect to the average value of the first downlink signal parameter of the first group is greater than a first threshold, so that the terminal determines, again according to the third downlink signal parameter of each directional antenna, new M directional antennas as receiving antennas of the terminal, and determines, again from the new M directional antennas, new L directional antennas as transmitting antennas of the terminal; wherein the third downlink signal parameter includes downlink signal strength or downlink signal quality.

In one possible design, the processor is further configured to use a second preset time period as a second period, and obtain, by the transceiver, a fourth downlink signal parameter of each directional antenna of the N directional antennas in the second period again, so as to obtain an average value of the fourth downlink signal parameter of each of the P groups, where the fourth downlink signal parameter includes downlink signal strength or downlink signal quality; the processor is further configured to select M directional antennas included in a second packet of the P packets in a second period as receiving antennas of the terminal, where the second packet is a packet of the P packets in which an average value of a fourth downlink signal parameter is the largest; the processor is further configured to sort the M directional antennas of the second group according to a sequence from high to low of the fourth downlink signal parameter, and select the first L directional antennas of the M directional antennas of the second group in the second period as transmitting antennas of the terminal.

In one possible design, the processor is further configured to determine that an average value of the fourth downlink signal parameter of the second packet is greater than a first preset multiple of an average value of the fourth downlink signal parameter of the first packet.

In one possible design, the processor is further configured to determine that M directional antennas included in the first packet are receive antennas of the terminal; the processor is further configured to obtain a first average value, where the first average value is an average value of fourth downlink signal parameters of the L directional antennas in the first group; the processor is further configured to sequence the first group of M directional antennas according to a descending order of the fourth downlink signal parameter to obtain a second average value, where the second average value is an average value of the fourth downlink signal parameter of the first L directional antennas of the first group of M directional antennas; and the processor is further configured to, if the second average value is greater than a second preset multiple of the first average value, re-determine, from high to low, the first L directional antennas of the M directional antennas of the first group as transmitting antennas of the terminal according to the fourth downlink signal parameter.

In one possible design, the processor is further configured to sort the N directional antennas from high to low according to the first downlink signal parameter of each directional antenna, select the first M directional antennas of the N directional antennas as receiving antennas of the terminal, and select the first L directional antennas of the M directional antennas as transmitting antennas of the terminal.

In one possible design, the processor is further configured to obtain a third average value, where the third average value is an average value of the first downlink signal parameters of the M directional antennas; the processor is further configured to obtain, by using a third preset time period as a third period, a fifth downlink signal parameter and a fourth average value of the fifth downlink signal parameters of the M directional antennas in the third period again through the transceiver, where the fourth average value is an average value of the fifth downlink signal parameters of the M directional antennas, and the fifth downlink signal parameter includes downlink signal strength or downlink signal quality; the processor is further configured to obtain, again through the transceiver, a sixth downlink signal parameter of each of the N directional antennas if a decrease amount of the fourth average value relative to the third average value is greater than a second threshold value, so that the terminal determines, again according to the sixth downlink signal parameter of each directional antenna, new M directional antennas as receiving antennas of the terminal, and determines, again from the new M directional antennas, new L directional antennas as transmitting antennas of the terminal; the sixth downlink signal parameter includes downlink signal strength or downlink signal quality.

In a possible design, the processor is further configured to obtain, by using a fourth preset time period as a fourth period, a seventh downlink signal parameter of each of the N directional antennas in the fourth period again through the transceiver; the processor is further configured to sort the N directional antennas from high to low according to the seventh downlink signal parameter of each directional antenna, reselect the first M directional antennas of the N directional antennas sorted this time as receiving antennas of the terminal, and reselect the first L directional antennas of the M directional antennas sorted this time as transmitting antennas of the terminal.

In one possible design, the processor is further configured to obtain a fifth average value and a sixth average value, where the fifth average value is an average value of the first downlink signal parameters of the M directional antennas determined according to the first downlink signal parameter; the sixth average value is the average value of the seventh downlink signal parameters of the first M directional antennas of the N directional antennas, which is determined according to the seventh downlink signal parameters; the processor is further configured to determine that the sixth average is greater than a third preset multiple of the fifth average.

In one possible design, the processor is further configured to determine M directional antennas determined according to the first downlink signal parameter as receiving antennas of the terminal; the processor is further configured to obtain a seventh average value, where the seventh average value is an average value of seventh downlink signal parameters of the L directional antennas determined according to the first downlink signal parameter; the processor is further configured to sort the M directional antennas determined according to the first downlink signal parameter according to a sequence of the seventh downlink signal parameter from high to low, and obtain an eighth average value, where the eighth average value is an average value of the seventh downlink signal parameter of the first L directional antennas of the M directional antennas after the sorting; and the processor is further configured to re-determine the first L directional antennas of the M directional antennas after the current sorting as transmitting antennas of the terminal if the eighth average value is greater than a fourth preset multiple of the seventh average value.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein instructions, which, when executed on a computer, cause the computer to perform the method of any of the first aspects described above.

In a fifth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first aspects described above.

In a sixth aspect, the present application provides a chip system comprising a processor for enabling a data transmission apparatus to implement the functions referred to in the above aspects, e.g. to generate or process data and/or information referred to in the above methods. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the data transmission device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Drawings

Fig. 1a is a schematic diagram of a radiation range of a terminal provided in the prior art;

fig. 1b is a schematic diagram of a radiation range of another terminal provided by the prior art;

fig. 2 is a schematic diagram illustrating a radiation range of a terminal according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 4 is a schematic position diagram of an antenna according to an embodiment of the present application;

fig. 5 is a schematic position diagram of another antenna provided in the embodiment of the present application;

fig. 6 is a flowchart of a method for antenna selection according to an embodiment of the present application;

fig. 7 is a schematic grouping diagram of an antenna according to an embodiment of the present application;

fig. 8 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 9 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 10 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 11 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 12 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 13 is a flowchart of another method for antenna selection according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an antenna selection apparatus according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a terminal for selecting another antenna according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application.

In an existing wireless communication network, a terminal 101 and a base station 102 are typically included. If the terminal 101 employs a directional antenna, and the directional direction of the directional antenna points to the base station 102, the radiation range of the directional antenna is as shown in fig. 1a, strong electromagnetic waves are radiated in the directional direction, the antenna gain is large, and the electromagnetic waves in other directions are weak or even none. If the terminal 101 employs an omnidirectional antenna, the radiation range of the omnidirectional antenna is as shown in fig. 1b, and electromagnetic waves having the same intensity are radiated in the direction around the terminal 101, but the radiation distance is short, and the antenna gain is small. Therefore, if the terminal adopts the method provided by the embodiment of the present application, the radiation range of the terminal antenna can be as shown in fig. 2, which can ensure the directivity of the terminal antenna and improve the antenna gain in each direction.

Fig. 3 is a schematic structural diagram of a terminal in an embodiment of the present application, which can be applied to the above network. The terminal may be a wireless Customer Premises Equipment (CPE), a wireless internet access device, or the like. In the embodiment of the present application, the terminal 300 may include a processing module 301, a communication module 302, a storage module 303, and an antenna module 304.

The processing module 301 is used to control hardware devices and application software of each part of the network device 300. In this embodiment, the processing module 31 may be configured to, for example, obtain downlink signal parameters of each directional antenna through the antenna module 304, calculate an average value of the downlink signal parameters of the directional antennas in each group, sort the directional antennas according to a sequence of the downlink signal parameters from high to low, determine M directional antennas from the N directional antennas as receiving antennas of the terminal, determine L directional antennas from the M directional antennas as transmitting antennas of the terminal, and so on.

The communication module 302 is configured to receive instructions and data sent by other devices using communication manners such as Wireless Fidelity (WiFi), Long Term Evolution (LTE), and 5G, and may also send instructions and data to other devices. In this embodiment, the communication module 302 may be configured to receive a route establishment request and service data sent by other network devices, and also be configured to send the route establishment request and service data to other network devices.

The storage module 303 is used to store software programs, store data, run software, and the like of the network device 300. In this embodiment, the storage module 303 may be configured to store, for example, downlink signal parameters of each directional antenna, information of antennas in a packet, and the like.

The antenna module 304 includes N directional antennas, and the N directional antennas are placed in a loop. Wherein the directional direction of each directional antenna is arranged perpendicular to the tangential direction of the loop and directed to the outside of the loop, as shown in fig. 4. Optionally, in order to improve the diversity gain of the terminal, the spacing between the N directional antennas may be increased, as shown in fig. 5, the N directional antennas may also be divided into multiple layers, and the antennas of each layer are annularly disposed on a horizontal plane, wherein the directional direction of each directional antenna is set to be perpendicular to the tangential direction of the loop and directed to the outside of the loop. It should be noted that fig. 4 and fig. 5 only show the case where 8 positioning antennas are provided, that is, N is 8, but the number of directional antennas, the number of tiers, and specific placement positions are not limited in the embodiments of the present application.

In the embodiments of the present application, specific functions of the respective modules are described in the following embodiments.

As shown in fig. 6, an antenna selection method provided in the embodiment of the present application may be applied to the terminal, and the method specifically includes:

101. the terminal acquires a first downlink signal parameter of each directional antenna.

The first downlink signal parameter includes downlink signal strength or downlink signal quality. Specifically, the downlink Signal strength may be characterized by Reference Signal Receiving Power (RSRP), and the downlink Signal quality may be characterized by Signal to Interference plus Noise Ratio (SINR). The stronger the downlink signal strength is, or the better the downlink signal quality is, the better the transceiving performance of the antenna is.

Specifically, after the terminal is powered on, the terminal identifies the cell by using a cell search process and obtains downlink synchronization, and then the terminal can read cell broadcast information and reside and use various services provided by a network. In the process of cell search, a terminal detects synchronous channels or cell pilot signals of a cell on each directional antenna respectively to obtain channel estimation values and interference information on each directional antenna, then downlink signal strength of each directional antenna is obtained according to the channel estimation values on each directional antenna, and downlink signal quality on each directional antenna is obtained according to the channel estimation values and the interference information on each directional antenna.

102. And the terminal determines M directional antennas as receiving antennas of the terminal from the N directional antennas according to the first downlink signal parameters of each directional antenna, and determines L directional antennas as transmitting antennas of the terminal from the M directional antennas.

Wherein, the numbers of the receiving antenna and the transmitting antenna are respectively determined according to the capability of a baseband chip of the terminal. Determining that the number of receiving antennas which can be supported by a baseband chip of the terminal is M, and the number of transmitting antennas which can be supported by the baseband chip is L. The baseband chip is used for synthesizing a baseband signal to be transmitted or decoding a received baseband signal. Specifically, when transmitting, the audio signal is compiled into a baseband code for transmission; upon reception, the received baseband code is interpreted as an audio signal. Meanwhile, the system is also responsible for compiling address information (mobile phone numbers, website addresses), text information (short message texts and website texts) and picture information.

In one possible implementation manner, the N directional antennas are sorted from high to low according to the first downlink signal parameter, M directional antennas with the largest first downlink signal parameter are selected from the N directional antennas as the receiving antennas of the terminal, and then L directional antennas with the largest first downlink signal parameter are selected from the M directional antennas as the transmitting antennas of the terminal. Illustratively, as shown in fig. 4 or fig. 5, the terminal includes 8 positioning antennas, and the baseband chip of the terminal supports 4 receiving antennas and 2 transmitting antennas. The terminal detects the pilot signals of the cell on the 8 antennas to obtain the signal strength and/or signal quality in the 8 positioning antennas. Assume that the first downlink signal parameters in the 8 positioning antennas are ordered from high to low as: antenna 1> antenna 2> antenna 3> antenna 4> antenna 5> antenna 6> antenna 7> antenna 8, the terminal determines that antenna 1, antenna 2, antenna 3 and antenna 4 are receiving antennas and antenna 1 and antenna 2 are transmitting antennas.

In another possible implementation manner, considering that there are many cases in which the terminal needs to select M directional antennas from N directional antennas as antenna combinations of the receiving antennas of the terminal, and for such many combination cases, the specific implementation of the terminal is very complicated, for example: the number of switches required is also large, and the more switches, the greater the amount of attenuation of the signal and the greater the amount of processing. Therefore, in order to simplify the complexity of the terminal in selecting the antennas and reduce the combination situation, in the embodiment of the present application, the N directional antennas may also be grouped and selected in units of groups. The grouping method may be that M adjacent directional antennas are grouped into one group, the directional antennas between the groups may or may not overlap, and the N directional antennas are divided into P groups. After grouping, the terminal averages the first downlink signal parameters of the M directional antennas in each group to obtain the average value of the first downlink signal parameters of each group. Then, determining the packet with the largest average value of the downlink signal parameters in each packet, namely a first packet, and taking the M directional antennas in the first packet as a terminal receiving antenna group. And sequencing the M directional antennas in the first group according to the sequence of the first downlink parameters from high to low, and selecting the first L directional antennas of the M directional antennas in the first group as the transmitting antennas of the terminal.

Illustratively, as shown in fig. 7, the terminal includes 8 positioning antennas, and the baseband chip of the terminal supports 4 receiving antennas and 2 transmitting antennas. Then, the 8 directional antennas of the terminal can be divided into 3 groups: group 1 includes antenna 1-antenna 4; group 2 includes antenna 3-antenna 6; packet 3 includes antennas 6-8 as well as antenna 1. There is an overlap of directional antennas between packets, e.g., antenna 3 and antenna 4 are included in both packet 1 and packet 2; both packet 2 and packet 3 include an antenna 6; both packet 3 and packet 1 include antenna 1.

Assume that the relation of the mean values of the first downlink signal parameters of these 3 packets is: packet 3> packet 2> packet 1, the terminal determines 4 positioning antennas (antenna 6, antenna 7, antenna 8 and antenna 1) in packet 3 as receiving antennas and determines 2 positioning antennas with the highest signal strength and/or signal quality from packet 3 as transmitting antennas.

The method for selecting the antenna is applied to a terminal which comprises N directional antennas and the N directional antennas are annularly arranged, according to the downlink signal parameter of each directional antenna, M directional antennas are determined to be receiving antennas of the terminal, and L directional antennas are determined to be transmitting antennas of the terminal. Compared with the prior art, the terminal in the prior art uses the directional antenna to obtain the antenna gain, but if the surrounding environment changes, the communication quality of the terminal is reduced, and the direction of the antenna needs to be manually adjusted. Or the omnidirectional antenna is used for acquiring a signal radiation range of 360 degrees so as to adapt to the change of the surrounding environment, the direction of the antenna does not need to be manually adjusted, but the antenna gain of the omnidirectional antenna is small, and the receiving and transmitting performance of the terminal is also influenced. According to the method and the device, the N directional antennas are placed in a ring shape, so that the terminal can obtain a signal radiation range of 360 degrees, the M directional antennas with the highest first downlink signal parameters are determined to be receiving antennas of the terminal from the N directional antennas according to the first downlink signal parameters, the L directional antennas with the highest first downlink signal parameters are determined to be transmitting antennas of the terminal from the M directional antennas, and therefore antenna gain of the terminal is improved.

In addition, in this application embodiment, every directional antenna's orientation direction sets up to the tangential direction of perpendicular to annular, and point to the annular outside can, need not strictly set up the orientation direction to point to the basic station, the technical degree of difficulty when having reduced directional antenna installation has saved the human cost. In addition, in the embodiment of the application, the directional antenna with the highest first downlink signal parameter is automatically determined from the N directional antennas to serve as the terminal receiving antenna, so that the change of the surrounding environment can be adapted, manual adjustment of the antenna is not needed, and the labor cost is also saved.

After the terminal accesses the wireless network, the receiving antenna and the sending antenna which are determined when the terminal is started can be continuously adopted for communication, and the receiving antenna and the sending antenna of the terminal can be re-determined according to the change of the downlink signal parameters. The following describes the antenna selection method in each case.

Firstly, N directional antennas of a terminal are grouped.

Considering the situation that the signal strength or quality on the originally determined M receiving antennas may be degraded along with the change of the surrounding environment after the terminal accesses the network, the terminal needs to determine whether the receiving antennas and the transmitting antennas need to be determined. Thus, as shown in fig. 8, an embodiment of the present application further provides an antenna selection method, which after step 102, specifically includes:

201. after the first preset time period, the terminal acquires second downlink signal parameters of the M directional antennas in the first group, and further acquires an average value of the second downlink signal parameters of the first group.

The second downlink signal parameter includes downlink signal strength or downlink signal quality. The average value of the second downlink signal parameters of the first group is the average value of the second downlink signal parameters of the M directional antennas included in the first group.

Specifically, according to step 102, after the terminal is powered on, the terminal determines M directional antennas in the first group as receiving antennas of the terminal. Then, after accessing the network, the terminal detects the cell pilot signal on the M directional antennas in real time or according to a certain period, that is, a first period, so as to obtain a second downlink signal parameter on each antenna of the M directional antennas and an average value of the second downlink signal parameters of the M directional antennas.

202. The terminal judges whether the average value of the second downlink signal parameter of the first group is larger than a first threshold value or not compared with the drop quantity of the average value of the first downlink signal parameter of the first group. If yes, go to step 203. If not, go to step 205.

If the average value of the second downlink signal parameter of the first packet is decreased by more than the first threshold compared with the average value of the first downlink signal parameter of the first packet, which indicates that the signal strength or quality on the M directional antennas in the first packet is generally deteriorated and the deterioration reaches a certain degree, and the communication quality of the terminal may be affected, the terminal needs to re-determine the receiving antenna and the transmitting antenna.

Further, in order to increase the robustness of the system and avoid a short drop in the signal strength or quality on the M directional antennas in the first group, the terminal re-determines the occurrence of the receiving antenna and the transmitting antenna. When detecting that the average value of the second downlink signal parameters of the M directional antennas in the first group exceeds the first threshold value continuously for multiple times within a certain time period compared with the decrease amount of the average value of the first downlink signal parameters, the terminal considers that the signal strength or quality of the M directional antennas in the first group is deteriorated, and the terminal needs to re-determine the receiving antennas and the transmitting antennas.

If the average value of the second downlink signal parameter of the first packet is decreased by an amount smaller than or equal to the first threshold compared with the average value of the first downlink signal parameter of the first packet, it indicates that the signal strength or quality on the M directional antennas of the first packet is not degraded overall, or is only slightly degraded, and the communication quality of the terminal is not greatly affected. Therefore, it is not necessary to re-determine the receiving antenna and the transmitting antenna of the terminal.

203. And the terminal acquires third downlink signal parameters on N directional antennas of the terminal.

Wherein the third downlink signal parameter includes downlink signal strength or downlink signal quality.

Specifically, the terminal detects cell pilot signals on all the N directional antennas, and obtains third downlink signal parameters on the N directional antennas.

204. And the terminal determines the receiving antenna and the transmitting antenna of the terminal again according to the third downlink signal parameter.

For a specific implementation, refer to step 102, which is not repeated herein.

205. The terminal determines to continue using the previously determined receive and transmit antennas.

Therefore, when the terminal determines that the signal strength or quality of the M receiving antennas of the first packet is reduced to a certain degree before entering the network, the terminal can re-determine the directional antennas with the best signal strength or quality as the receiving antennas and the transmitting antennas. Therefore, the communication quality of the terminal can be prevented from being reduced due to the fact that the signal strength or the quality of the originally determined receiving antenna and the originally determined transmitting antenna is poor.

Further, it is considered that, after the terminal accesses the network, although the terminal originally determines that the signal strength or quality of the M directional antennas in the first group is not degraded, the signal strength or quality of the directional antennas in other groups of the terminal may become better, so that the communication quality on the terminal is not the best. Thus, as shown in fig. 9, an embodiment of the present application further provides an antenna selection method, which after step 102, specifically includes:

301. and the terminal obtains the fourth downlink signal parameter of each directional antenna on the N directional antennas after a second preset time period and the average value of the fourth downlink signal parameters of each group.

Wherein the fourth downlink signal parameter includes downlink signal strength or downlink signal quality. The average value of the fourth downlink signal parameter of each group is the average value of the second downlink signal parameters of the M directional antennas included in each group.

Specifically, the terminal detects cell pilot signals on the N directional antennas according to a certain period, that is, a second period, so as to observe whether the signal strength or quality on each directional antenna on the terminal is good or not.

302. And the terminal determines the M directional antennas in the second grouping as new receiving antennas again according to the average value of the fourth downlink signal parameters of each grouping, and determines the L directional antennas as new transmitting antennas from the M directional antennas in the second grouping.

The second packet is the packet with the largest average value of the fourth downlink signal parameter in the P packets.

Specifically, the terminal re-determines the M directional antennas in the second packet as new receiving antennas of the terminal. And then, the terminal sorts the M directional antennas in the second packet according to the sequence of the fourth downlink signal parameter from high to low, and the first L directional antennas are obtained and used as the transmitting antennas of the terminal. Therefore, the terminal updates the receiving antenna and the transmitting antenna, which is beneficial to improving the receiving and transmitting performance of the terminal and improving the conversation quality.

Further, in order to increase the robustness of the system and avoid the situation that the signal strength or quality on the directional antennas of other groups is slightly better, the terminal re-determines the situations of the receiving antenna and the transmitting antenna, as shown in fig. 10, an embodiment of the present application further provides a method for selecting an antenna, which specifically includes, before step 302:

401. if the average value of the fourth downlink signal parameter of the second group is greater than the first preset multiple of the average value of the fourth downlink signal parameter of the first group, step 302 is executed. Otherwise, step 402 is performed.

Specifically, if the average value of the fourth downlink signal parameter of the second group is greater than a first preset multiple of the average value of the fourth downlink signal parameter of the first group, for example: 1.2 times, indicating that the signal strength or quality on the directional antenna of the second packet is generally better and to some extent better than the M directional antennas in the first packet as receiving antennas. Then, the terminal needs to re-determine the receiving antenna and the transmitting antenna.

If the average value of the fourth downlink signal parameter of the second group is smaller than or equal to a first preset multiple of the average value of the fourth downlink signal parameter of the first group, indicating that the signal strength or quality on the directional antennas of the second group is not better overall and is not better to a certain extent relative to the M directional antennas as the receiving antennas in the first group, the terminal does not need to re-determine the receiving antennas. It should be noted that there may be a change in signal strength or quality on the M directional antennas inside the second packet, and therefore, a further determination is made as to whether the transmit antennas need to be re-determined.

402. And the terminal acquires the first average value and the second average value according to the fourth downlink signal parameter.

Specifically, the terminal calculates an average value of fourth downlink signal parameters of L directional antennas serving as receiving antennas in the first group, that is, the first average value. Then, the terminal sorts the M directional antennas in the first group according to the sequence of the fourth downlink signal parameter from high to low, obtains L directional antennas with the largest fourth downlink signal parameter in the first group, and calculates the average value of the fourth downlink signal parameters of the L directional antennas, that is, the second average value.

403. And if the second average value is larger than a second preset multiple of the first average value, the terminal determines the L directional antennas with the maximum fourth downlink signal parameter in the first group as new transmitting antennas of the terminal.

Specifically, if the second average value is greater than a second preset multiple, for example, 1.2 times, of the first average value, it indicates that the signal strength or quality inside the M directional antennas in the second group has changed greatly, and the signal strength or quality of other antennas is obviously improved except for the L directional antennas originally used as receiving antennas. Therefore, the terminal needs to re-determine the receiving antenna of the terminal, which is beneficial to improving the transmitting performance of the terminal and improving the communication quality of the terminal. Otherwise, the terminal does not need to re-determine the transmitting antenna.

Therefore, when the terminal is in network access and the signal strength or quality of the M receiving antennas determined before is reduced to a certain degree, the terminal can re-determine the directional antenna with the best signal strength or quality as the receiving antenna and the transmitting antenna. Therefore, the communication quality of the terminal can be prevented from being reduced due to the fact that the signal strength or the quality of the originally determined receiving antenna and the originally determined transmitting antenna is poor.

Secondly, N directional antennas of the terminal are not grouped

Considering the situation that the signal strength or quality on the originally determined M receiving antennas may be degraded along with the change of the surrounding environment after the terminal accesses the network, the terminal needs to determine whether the receiving antennas and the transmitting antennas need to be determined. Thus, as shown in fig. 11, an embodiment of the present application further provides an antenna selection method, which after step 102, specifically includes:

501. the terminal determines an average value of the first downlink signal parameters of the M directional antennas as the receiving antennas, i.e. a third average value.

502. And after a third preset time period, the terminal acquires fifth downlink signal parameters and a fourth average value of the M directional antennas.

The fifth downlink signal parameter includes downlink signal strength or downlink signal quality, and the fourth average value is an average value of the fifth downlink signal parameters of the M directional antennas.

503. The terminal determines whether the fourth average value is greater than a second threshold value compared to the third average value. If yes, go to step 504. If not, go to step 506.

If the drop of the fourth average value compared with the third average value is larger than the second threshold, which indicates that the signal strength or quality on the M directional antennas as the receiving antennas is generally degraded and degraded to a certain extent, and the communication quality of the terminal may be affected, the terminal needs to re-determine the receiving antennas and the transmitting antennas.

Further, in order to increase the robustness of the system and avoid a short drop in the signal strength or quality on the M directional antennas as the receiving antennas, the terminal re-determines the receiving antennas and the transmitting antennas. The terminal may consider that the signal strength or quality on the M directional antennas is degraded only when it detects that the decrease amount of the fourth average value compared to the third average value continuously exceeds the second threshold value for multiple times within a certain time period, and the terminal needs to re-determine the receiving antenna and the transmitting antenna.

If the amount of decrease of the fourth average value compared with the third average value is smaller than or equal to the second threshold, it indicates that the signal strength or quality on the M directional antennas as the receiving antennas is not degraded overall, or is degraded only slightly, and the communication quality of the terminal is not greatly affected. Therefore, it is not necessary to re-determine the receiving antenna and the transmitting antenna of the terminal.

504. And the terminal acquires sixth downlink signal parameters on N directional antennas of the terminal.

The sixth downlink signal parameter includes downlink signal strength or downlink signal quality.

505. And the terminal determines the receiving antenna and the transmitting antenna of the terminal again according to the sixth downlink signal parameter.

For a specific implementation, refer to step 102, which is not repeated herein.

506. The terminal determines to continue using the previously determined receive and transmit antennas.

Further, after the terminal accesses the network, although the terminal originally determines that the signal strength or quality of the M directional antennas is not degraded, the signal strength or quality of other directional antennas of the terminal may become better, so that the communication quality on the terminal is not the best. Thus, as shown in fig. 12, an embodiment of the present application further provides an antenna selection method, which after step 102, specifically includes:

601. and the terminal obtains a seventh downlink signal parameter of each directional antenna on the N directional antennas after a fourth preset time period.

Wherein the seventh downlink signal parameter includes downlink signal strength or downlink signal quality.

Specifically, the terminal detects cell pilot signals on N directional antennas according to a certain period, that is, a fourth period, so as to observe whether the signal strength or quality on each directional antenna on the terminal is good or not.

602. And the terminal re-determines the receiving antenna and the transmitting antenna according to the seventh downlink signal parameter of each directional antenna.

Specifically, the terminal performs high-to-low sequencing on the N directional antennas according to the seventh downlink signal parameter, and re-determines the first M directional antennas in the N directional antennas after the sequencing to be receiving antennas and the first L directional antennas to be transmitting antennas. Therefore, the terminal updates the receiving antenna and the transmitting antenna, which is beneficial to improving the receiving and transmitting performance of the terminal and improving the conversation quality.

Further, in order to increase the robustness of the system and avoid the situation that the signal strength or quality on other directional antennas is slightly better, the terminal re-determines the receiving antenna and the transmitting antenna, as shown in fig. 13, an embodiment of the present invention further provides a method for selecting an antenna, before step 602, specifically including:

701. and the terminal acquires a fifth average value and a sixth average value according to the seventh downlink signal parameters of the N directional antennas.

The fifth average value is an average value of the seventh downlink signal parameters of the M directional antennas serving as the receiving antennas at this time. And the terminal selects M directional antennas with the largest seventh downlink signal parameter from the N directional antennas, and determines the average value of the seventh downlink signal parameters of the M directional antennas as a sixth average value.

702. If the sixth average value is greater than the third predetermined multiple of the fifth average value, step 602 is performed. Otherwise, step 703 is performed.

Specifically, if the sixth average value is greater than a third preset multiple of the fifth average value, for example: 1.2 times, indicating that the signal strength or quality on other directional antennas, except the M directional antenna as the receiving antenna, generally gets better and to some extent. Then, the terminal needs to re-determine the receiving antenna and the transmitting antenna.

If the sixth average value is less than or equal to the third preset multiple of the fifth average value, which indicates the signal strength or quality on the other directional antennas, the overall performance is not good and the performance is not good to a certain extent relative to the M directional antennas as receiving antennas, and then the terminal does not need to re-determine the receiving antennas. It should be noted that there may be a change in signal strength or quality between the M directional antennas as receiving antennas, and therefore, it is necessary to further determine whether to re-determine the transmitting antenna.

703. And the terminal acquires a seventh average value and an eighth average value according to the seventh downlink signal parameter.

Specifically, the terminal calculates an average value of seventh downlink signal parameters of the L directional antennas serving as the receiving antennas, that is, the seventh average value. Then, the terminal sorts the M directional antennas as receiving antennas according to the sequence of the seventh downlink signal parameter from high to low, obtains L directional antennas with the largest seventh downlink signal parameter, and calculates an average value of the seventh downlink signal parameters of the L directional antennas, that is, an eighth average value.

704. And if the eighth average value is larger than a fourth preset multiple of the seventh average value, the terminal determines that the L directional antennas with the largest seventh downlink signal parameter are new transmitting antennas of the terminal.

Specifically, if the eighth average value is larger than the fourth preset multiple, for example, 1.2 times, of the seventh average value, it indicates that the signal strength or quality inside the M directional antennas as the receiving antennas has changed greatly, that is, the signal strength or quality of other antennas is obviously improved except for the L directional antennas as the receiving antennas. Therefore, the terminal needs to re-determine the transmitting antenna of the terminal, which is beneficial to improving the transmitting performance of the terminal and improving the communication quality of the terminal. Otherwise, the terminal does not need to re-determine the transmit antenna.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that each network element, for example, a base station, a user equipment, etc., contains corresponding hardware structures and/or software modules for performing each function in order to implement the above functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal and the like may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 14 shows a possible structural diagram of the terminal involved in the above embodiment, and the terminal 1400 includes: a processing unit 1401, a storage unit 1402, a communication unit 1403 and an antenna unit 1404. The processing unit 1401 is configured to support the terminal to execute the

processes

101 and 102 in fig. 6, the process 201 in fig. 8 and 205, the process 301 in fig. 9 and 302, the process 401 in fig. 10 and 403, the process 501 in fig. 11 and 506, the process 601 in fig. 12 and the process 701 in fig. 13 and 704. The storage unit 1402 is used to support the terminal to store corresponding program codes and data. An antenna unit 1404 is used to support communication between the terminal and the base station. A communication unit 1403 is used to support communication of the terminal with other network entities. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In case of an integrated unit, the processing unit 1401 may be the processing module 301 in fig. 3, the storage unit 1402 may be the storage module 303 in fig. 3, the communication unit 1403 may be the communication module 302 in fig. 3, and the antenna unit 1404 may be the antenna module 304 in fig. 3.

The Processing module 301 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 302 may be a transceiver, a transceiving circuit or a communication interface, etc. The storage module 303 may be a memory.

When the processing module 301 is a processor, the communication module 302 is a transceiver, and the storage module 303 is a memory, the base station according to the embodiment of the present application may be the base station shown in fig. 1 b.

Referring to fig. 15, the terminal 1500 includes: a processor 1501, a transceiver 1502, a memory 1503, and a bus 1504. Wherein, the transceiver 1502, the processor 1501 and the memory 1503 are connected to each other by a bus 1504; the bus 1503 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. 15, but this is not intended to represent only one bus or type of bus.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

The present application provides a chip system comprising a processor for enabling a data transmission apparatus to carry out the functions referred to in the above aspects, e.g. to generate or process data and/or information referred to in the above methods. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the data transmission device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. The antenna selection method is applied to a terminal, wherein the terminal is provided with N directional antennas, the N directional antennas are arranged in a ring shape, and the directional directions of the N directional antennas are set to be perpendicular to the tangential direction of the ring shape and point to the outer side of the ring shape; the method comprises the following steps:

the terminal does not divide N directional antennas into a plurality of groups, or divides the N directional antennas into P groups, wherein each group comprises M directional antennas;

the terminal acquires a first downlink signal parameter of each directional antenna of the N directional antennas, wherein the first downlink signal parameter comprises downlink signal strength or downlink signal quality; the downlink signal strength is represented by the signal receiving power, and the downlink signal quality is represented by the ratio of the available signal to the interference plus noise;

when the terminal divides the N directional antennas into P groups, the terminal obtains the average value of the first downlink signal parameter of each group in the P groups according to the first downlink signal parameter of each directional antenna;

the terminal selects M directional antennas included in a first group of the P groups as receiving antennas of the terminal, and the first group is a group with the largest average value of the first downlink signal parameters in the P groups;

the terminal sorts the M directional antennas of the first group according to the sequence of the first downlink signal parameters from high to low, and selects the first L directional antennas of the M directional antennas of the first group as transmitting antennas of the terminal;

wherein N is more than or equal to 2, N is more than or equal to M and more than or equal to L, and L, M, N is a positive integer;

after the terminal accesses the network, the terminal can re-determine the receiving antenna and the transmitting antenna according to the downlink signal strength or the downlink signal quality of each directional antenna.

2. The method of claim 1, further comprising:

with a first preset time period as a first period, the terminal reacquires a second downlink signal parameter of each directional antenna in the first group in the first period, and further acquires an average value of the second downlink signal parameters of the first group, wherein the second downlink signal parameters include downlink signal strength or downlink signal quality;

if the drop amount of the average value of the second downlink signal parameter of the first packet relative to the average value of the first downlink signal parameter of the first packet is greater than a first threshold, the terminal acquires a third downlink signal parameter of each of the N directional antennas in the first period again, so that the terminal determines new M directional antennas as receiving antennas of the terminal again according to the third downlink signal parameter of each directional antenna, and determines new L directional antennas as transmitting antennas of the terminal again from the new M directional antennas;

wherein the third downlink signal parameter includes the downlink signal strength or the downlink signal quality.

3. The method of claim 2, further comprising:

with a second preset time period as a second period, the terminal reacquires a fourth downlink signal parameter of each directional antenna of the N directional antennas in the second period, and further acquires an average value of the fourth downlink signal parameter of each of the P groups, where the fourth downlink signal parameter includes the downlink signal strength or the downlink signal quality;

the terminal selects M directional antennas included in a second group of the P groups in the second period as receiving antennas of the terminal, and the second group is a group with the maximum average value of the fourth downlink signal parameters in the P groups;

and the terminal sorts the M directional antennas of the second group according to the sequence of the fourth downlink signal parameters from high to low, and selects the first L directional antennas of the M directional antennas of the second group in the second period as transmitting antennas of the terminal.

4. The method of claim 3, wherein before the terminal selects the M directional antennas included in the second packet of the P packets in the second period as the receiving antennas of the terminal, the method further comprises:

the terminal determines that the average value of the fourth downlink signal parameter of the second packet is greater than a first preset multiple of the average value of the fourth downlink signal parameter of the first packet.

5. The method of claim 4, wherein if the terminal determines that the average value of the fourth downlink signal parameter of the second packet is less than or equal to the first preset multiple of the average value of the fourth downlink signal parameter of the first packet, the method further comprises:

the terminal determines that the M directional antennas included in the first group are receiving antennas of the terminal;

the terminal acquires a first average value, wherein the first average value is an average value of the fourth downlink signal parameters of the L directional antennas in the first group;

the terminal sorts the M directional antennas of the first group according to the sequence of the fourth downlink signal parameters from high to low to obtain a second average value, wherein the second average value is the average value of the fourth downlink signal parameters of the first L directional antennas of the M directional antennas of the first group;

and if the second average value is greater than a second preset multiple of the first average value, the terminal determines the first L directional antennas of the M directional antennas of the first group as the transmitting antennas of the terminal again according to the sequence of the fourth downlink signal parameter from high to low.

6. The method of claim 1, wherein the terminal does not divide the N directional antennas into multiple groups;

and the terminal sorts the N directional antennas from high to low according to the first downlink signal parameter of each directional antenna, selects the first M directional antennas of the N directional antennas as receiving antennas of the terminal, and selects the first L directional antennas of the M directional antennas as transmitting antennas of the terminal.

7. The method of claim 6, further comprising:

the terminal obtains a third average value, wherein the third average value is an average value of the first downlink signal parameters of the M directional antennas;

with a third preset time period as a third period, the terminal reacquires fifth downlink signal parameters and a fourth average value of the fifth downlink signal parameters of the M directional antennas in the third period, where the fourth average value is an average value of the fifth downlink signal parameters of the M directional antennas, and the fifth downlink signal parameters include the downlink signal strength or the downlink signal quality;

if the descending amount of the fourth average value relative to the third average value is greater than a second threshold value, the terminal acquires a sixth downlink signal parameter of each directional antenna of the N directional antennas again, so that the terminal determines new M directional antennas as receiving antennas of the terminal again according to the sixth downlink signal parameter of each directional antenna, and determines new L directional antennas as transmitting antennas of the terminal again from the new M directional antennas;

wherein the sixth downlink signal parameter includes the downlink signal strength or the downlink signal quality.

8. The method of claim 7, further comprising:

with a fourth preset time period as a fourth period, the terminal reacquires a seventh downlink signal parameter of each directional antenna of the N directional antennas in the fourth period;

and the terminal sequences the N directional antennas from high to low according to the seventh downlink signal parameter of each directional antenna, reselects the first M directional antennas in the N directional antennas after the sequencing as receiving antennas of the terminal, and reselects the first L directional antennas in the M directional antennas after the sequencing as transmitting antennas of the terminal.

9. The method of claim 8, wherein before reselecting the first M directional antennas of the N directional antennas after the ranking as receiving antennas of the terminal, the method further comprises:

the terminal acquires a fifth average value and a sixth average value, wherein the fifth average value is the average value of the first downlink signal parameters of the M directional antennas determined according to the first downlink signal parameters; the sixth average value is an average value of the seventh downlink signal parameters of the first M directional antennas of the N directional antennas, which is determined according to the seventh downlink signal parameters;

and the terminal determines that the sixth average value is larger than a third preset multiple of the fifth average value.

10. The method of claim 9, wherein if the terminal determines that the sixth average value is less than or equal to a third preset multiple of the fifth average value, the method further comprises:

the terminal determines the M directional antennas determined according to the first downlink signal parameters as receiving antennas of the terminal;

the terminal acquires a seventh average value, wherein the seventh average value is the average value of the seventh downlink signal parameters of the L directional antennas determined according to the first downlink signal parameters;

the terminal sorts the M directional antennas determined according to the first downlink signal parameter according to the sequence of the seventh downlink signal parameter from high to low, and obtains an eighth average value, where the eighth average value is the average value of the seventh downlink signal parameter of the first L directional antennas of the M directional antennas after the sorting;

and if the eighth average value is greater than a fourth preset multiple of the seventh average value, the terminal re-determines the first L directional antennas of the M directional antennas after the sequencing as the transmitting antennas of the terminal.

11. The device for selecting the antenna is characterized by comprising N directional antennas, wherein the N directional antennas are arranged in a ring shape, and the directional directions of the N directional antennas are perpendicular to the tangential direction of the ring shape and point to the outer side of the ring shape; the N directional antennas may be divided into P groups, where each group includes M directional antennas; or, the N directional antennas are not divided into a plurality of groups; the device further comprises: a processing unit and a communication unit;

the processing unit is configured to obtain, through the communication unit, a first downlink signal parameter of each directional antenna of the N directional antennas, where the first downlink signal parameter includes downlink signal strength or downlink signal quality; the downlink signal strength is represented by the signal receiving power, and the downlink signal quality is represented by the ratio of the available signal to the interference plus noise;

the processing unit is further configured to, when the N directional antennas are divided into P groups, obtain an average value of the first downlink signal parameter of each of the P groups according to the first downlink signal parameter of each of the directional antennas;

the processing unit is further configured to select M directional antennas included in a first packet of the P packets as receiving antennas of the apparatus, where the first packet is a packet of the P packets in which an average value of the first downlink signal parameter is the largest;

the processing unit is further configured to sort the first group of M directional antennas according to a sequence of the first downlink signal parameter from high to low, and select first L directional antennas of the first group of M directional antennas as transmitting antennas of the apparatus;

the processing unit is further configured to re-determine the receiving antenna and the transmitting antenna according to the downlink signal strength or the downlink signal quality of each directional antenna.

12. The apparatus according to claim 11, wherein the processing unit is further configured to obtain, by using a first preset time period as a first cycle, second downlink signal parameters of each directional antenna in the first group in the first cycle again through the communication unit, and further obtain an average value of the second downlink signal parameters of the first group, where the second downlink signal parameters include the downlink signal strength or the downlink signal quality;

the processing unit is further configured to, if a decrease amount of the average value of the second downlink signal parameter of the first packet relative to the average value of the first downlink signal parameter of the first packet is greater than a first threshold, re-obtain, by the communication unit, a third downlink signal parameter of each of the N directional antennas in the first period, so that the apparatus re-determines, according to the third downlink signal parameter of each directional antenna, new M directional antennas as receiving antennas of the apparatus, and re-determines, from the new M directional antennas, new L directional antennas as transmitting antennas of the apparatus;

13. The apparatus of claim 12, wherein the processing unit is further configured to obtain, by the communication unit, a fourth downlink signal parameter of each of the N directional antennas in a second preset time period as a second period, and further obtain an average value of the fourth downlink signal parameter of each of the P packets, where the fourth downlink signal parameter includes the downlink signal strength or the downlink signal quality;

the processing unit is further configured to select M directional antennas included in a second packet of the P packets in the second period as receiving antennas of the apparatus, where the second packet is a packet of the P packets in which an average value of the fourth downlink signal parameter is the largest;

the processing unit is further configured to sort the M directional antennas of the second packet according to a sequence from high to low of the fourth downlink signal parameter, and select the first L directional antennas of the M directional antennas of the second packet in the second period as transmitting antennas of the apparatus.

14. The apparatus of claim 13, wherein the processing unit is further configured to determine that an average value of the fourth downlink signal parameter of the second packet is greater than a first preset multiple of an average value of the fourth downlink signal parameter of the first packet.

15. The apparatus of claim 14, wherein the processing unit is further configured to determine that the M directional antennas included in the first packet are receive antennas of the apparatus;

the processing unit is further configured to obtain a first average value, where the first average value is an average value of the fourth downlink signal parameters of the L directional antennas in the first group;

the processing unit is further configured to sort the M directional antennas of the first group in a descending order of the fourth downlink signal parameter to obtain a second average value, where the second average value is an average value of the fourth downlink signal parameter of the first L directional antennas of the M directional antennas of the first group;

the processing unit is further configured to, if the second average value is greater than a second preset multiple of the first average value, re-determine, according to a sequence from high to low of the fourth downlink signal parameter, that the first L directional antennas of the M directional antennas of the first group are transmitting antennas of the apparatus.

16. The apparatus of claim 11, wherein the processing unit is further configured to, when the N directional antennas are not divided into a plurality of groups, sort the N directional antennas from high to low according to the first downlink signal parameter of each directional antenna, select first M directional antennas of the N directional antennas as receiving antennas of the apparatus, and select first L directional antennas of the M directional antennas as transmitting antennas of the apparatus.

17. The apparatus according to claim 16, wherein the processing unit is further configured to obtain a third average value, where the third average value is an average value of the first downlink signal parameters of the M directional antennas;

the processing unit is further configured to use a third preset time period as a third period, and obtain, by the communication unit again, fifth downlink signal parameters and a fourth average value of the fifth downlink signal parameters of the M directional antennas in the third period, where the fourth average value is an average value of the fifth downlink signal parameters of the M directional antennas, and the fifth downlink signal parameters include the downlink signal strength or the downlink signal quality;

the processing unit is further configured to obtain, again through the communication unit, a sixth downlink signal parameter of each of the N directional antennas if a decrease amount of the fourth average value relative to the third average value is greater than a second threshold, so that the apparatus determines, again according to the sixth downlink signal parameter of each of the N directional antennas, new M directional antennas as receiving antennas of the apparatus, and determines, again from among the new M directional antennas, new L directional antennas as transmitting antennas of the apparatus;

18. The apparatus according to claim 17, wherein the processing unit is further configured to obtain, by the communication unit again, a seventh downlink signal parameter of each of the N directional antennas in a fourth period, where the fourth preset time period is the fourth period;

the processing unit is further configured to sort the N directional antennas from high to low according to the seventh downlink signal parameter of each directional antenna, reselect, as receiving antennas of the device, first M directional antennas of the N directional antennas sorted this time, and reselect, as transmitting antennas of the device, first L directional antennas of the M directional antennas sorted this time.

19. The apparatus of claim 18, wherein the processing unit is further configured to obtain a fifth average value and a sixth average value, wherein the fifth average value is an average value of the first downlink signal parameters of the M directional antennas determined according to the first downlink signal parameter; the sixth average value is an average value of the seventh downlink signal parameters of the first M directional antennas of the N directional antennas, which is determined according to the seventh downlink signal parameters;

the processing unit is further configured to determine that the sixth average is greater than a third preset multiple of the fifth average.

20. The apparatus of claim 19, wherein the processing unit is further configured to determine the M directional antennas determined according to the first downlink signal parameter as receiving antennas of the apparatus;

the processing unit is further configured to obtain a seventh average value, where the seventh average value is an average value of the seventh downlink signal parameters of the L directional antennas determined according to the first downlink signal parameter;

the processing unit is further configured to sort the M directional antennas determined according to the first downlink signal parameter according to a sequence of the seventh downlink signal parameter from high to low, and obtain an eighth average value, where the eighth average value is an average value of the seventh downlink signal parameter of the first L directional antennas of the M directional antennas after the sorting;

the processing unit is further configured to re-determine, if the eighth average value is greater than a fourth preset multiple of the seventh average value, that the first L directional antennas of the M directional antennas after the current sorting are the transmitting antennas of the device.

21. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 10.