WO2017071206A1 - 一种天线切换方法及终端 - Google Patents

一种天线切换方法及终端 Download PDF

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Publication number
WO2017071206A1
WO2017071206A1 PCT/CN2016/084077 CN2016084077W WO2017071206A1 WO 2017071206 A1 WO2017071206 A1 WO 2017071206A1 CN 2016084077 W CN2016084077 W CN 2016084077W WO 2017071206 A1 WO2017071206 A1 WO 2017071206A1
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WIPO (PCT)
Prior art keywords
antenna
signal
signal strength
terminal
receives
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Ceased
Application number
PCT/CN2016/084077
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English (en)
French (fr)
Inventor
刘龙海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Publication of WO2017071206A1 publication Critical patent/WO2017071206A1/zh
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0825—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with main and with auxiliary or diversity antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an antenna switching method and a terminal.
  • a smartphone generally includes at least two antennas disposed at the upper and lower ends of the smart phone, and the upper antenna is used to receive and transmit high-frequency signals, such as signals of the B1 and B2 bands of Long Term Evolution (LTE); The antenna is used to receive and transmit low frequency signals, such as the Global System for Mobile Communications (GSM) 900M band.
  • GSM Global System for Mobile Communications
  • the signal of the antenna When the user holds the smart phone, if the position of the antenna is held, the signal of the antenna will be shielded to a certain extent, causing the signal of the antenna to drop sharply, which affects the normal communication of the smart phone.
  • the embodiment of the invention discloses an antenna switching method and a terminal, and the terminal can still maintain normal communication when the user holds the terminal and causes a sharp drop of the signal.
  • an embodiment of the present invention provides an antenna switching method, where the method includes:
  • the terminal measures a signal strength when the first antenna receives the signal and a signal strength when the second antenna receives the signal, wherein the first antenna and the second antenna are disposed at different positions on the terminal, and the first antenna a main set antenna, and the second antenna is a diversity antenna;
  • the terminal switches the first antenna to a diversity antenna, and switches the second antenna to a primary antenna.
  • the signal strength of the terminal when the first antenna receives the signal and the signal strength when the second antenna receives the signal include:
  • the terminal measures a signal strength when the first antenna receives a signal in a preset time period
  • the terminal measures the signal strength when the second antenna receives the signal.
  • the frequency range received by the first antenna and the first The frequency range received by the two antennas includes both high frequency and low frequency.
  • the terminal switches the first antenna to a diversity antenna, and the The second antenna switching to the main set antenna includes:
  • the terminal swaps the circuit connected to the first antenna and the circuit of the second antenna through a double-pole double-throw switch.
  • an embodiment of the present invention provides a terminal, where the terminal includes:
  • a measuring unit configured to measure a signal strength when the first antenna receives the signal and a signal strength when the second antenna receives the signal, wherein the first antenna and the second antenna are disposed at different positions on the terminal, and
  • the first antenna is a main set antenna, and the second antenna is a diversity antenna;
  • a determining unit configured to determine, according to a signal strength when the first antenna receives a signal and a signal strength when the second antenna receives a signal, whether the switching condition is met;
  • a switching unit configured to: when the determining unit determines that the switching condition is met, the first day The line is switched to a diversity antenna, and the second antenna is switched to a main set antenna.
  • the measuring unit includes:
  • a first measurement subunit configured to measure a signal strength when the first antenna receives a signal during a preset time period
  • a determining subunit configured to determine whether a difference between a signal strength measured at an end time point of the preset time period and a signal strength measured at a starting time point of the preset time period reaches a first threshold
  • a second measuring subunit configured to measure a signal strength when the second antenna receives the signal when the determining result of the determining subunit is YES.
  • the determining unit is specifically configured to determine a signal when the first antenna receives a signal Whether the strength is less than the second threshold, and whether the signal strength when the second antenna receives the signal is higher than the signal strength when the first antenna receives the signal by a third threshold, and if the determination result is yes, the Switch conditions.
  • the frequency range received by the first antenna and the first The frequency range received by the two antennas includes both high frequency and low frequency.
  • the switching unit is specifically configured to use the double-pole double-throw switch
  • the circuit connected to the antenna and the circuit of the second antenna are swapped.
  • the first antenna and the second antenna disposed at different positions of the terminal are respectively configured as a primary antenna and a diversity antenna, and if the signal of the first antenna as the primary antenna is weak, it will be used as a diversity.
  • the second antenna of the antenna is configured as a main set antenna, and the first antenna is configured as a diversity antenna, so that the antenna with better signal is always the main antenna in the first antenna and the second antenna, and the normal communication of the terminal is ensured.
  • FIG. 1 is a schematic flowchart of an antenna switching method according to an embodiment of the present invention.
  • FIG. 1A is a schematic structural diagram of a terminal antenna according to an embodiment of the present invention.
  • FIG. 1B is a schematic structural diagram of a control circuit according to an embodiment of the present invention.
  • FIG. 1C is a schematic structural diagram of still another control circuit according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 2A is a schematic structural diagram of a measuring unit according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of still another terminal according to an embodiment of the present invention.
  • the terminal described in the embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device (such as a smart watch (such as iWatch, etc.), a smart bracelet, and a meter. Stepper, etc.) or other communication module that can set the antenna.
  • MID mobile internet device
  • a wearable device such as a smart watch (such as iWatch, etc.)
  • a smart bracelet such as iWatch, etc.
  • a meter. Stepper, etc. or other communication module that can set the antenna.
  • FIG. 1 is a schematic flowchart diagram of an antenna switching method according to an embodiment of the present invention, where the method includes but is not limited to the following steps.
  • Step S101 The terminal measures a signal strength when the first antenna receives the signal and a signal strength when the second antenna receives the signal, where the first antenna and the second antenna are disposed at different positions on the terminal, and the The first antenna is a main set antenna, and the second antenna is a diversity antenna.
  • the terminal is provided with at least two antennas, and the at least two antennas include a first antenna and a second antenna, which are respectively disposed at different positions on the terminal; for example, referring to FIG. 1A, the first in FIG. 1A
  • the antenna 111 and the second antenna 112 are respectively disposed at the upper end and the lower end of the terminal (such as a mobile phone).
  • the first antenna 111 and the second antenna 112 are enclosed in the terminal, and the outer casing of the terminal is generally not visible if the terminal is not opened.
  • the terminal may further include other antennas than the first antenna and the second antenna, and how the other antennas operate specifically is not limited herein.
  • the terminal uses a mechanism in which the main set antenna and the diversity antenna operate together to receive and transmit signals, that is, receive and transmit signals through the main set antenna, and simultaneously receive signals through the diversity antenna.
  • the first antenna and the second antenna correspond to the main set antenna and the diversity antenna, and which antenna corresponds to the main set antenna, and which antenna corresponds to the diversity antenna, which is not limited herein, because in the embodiment of the present invention
  • the terminal determines which antenna corresponds to the main set antenna and which antenna corresponds to the diversity antenna according to actual needs.
  • the terminal sets the first antenna corresponding main set antenna and the second antenna corresponding diversity antenna as needed.
  • the measured quantity includes at least one of Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ).
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the measurement of the signal strength when the terminal receives the signal by the first antenna and the signal strength when the second antenna receives the signal is performed separately, that is, the signal strength corresponding to the first antenna and the first The signal strength corresponding to the two antennas; in addition, the measurement of the signal strength when the terminal receives the signal by the first antenna and the signal strength when the second antenna receives the signal may be performed simultaneously or in a preset order, and the preferred solution is Both are done at the same time.
  • the signal strength when the terminal measures the signal received by the first antenna and the signal strength when the second antenna receives the signal includes: the terminal is measured in a preset time period. a signal strength when the first antenna receives a signal; the terminal determines whether a difference between a signal strength measured at an end time point of the preset time period and a signal strength measured at a start time point of the preset time period is The first threshold is reached; if it is reached, the terminal measures the signal strength when the second antenna receives the signal.
  • the terminal first measures the signal strength of the received signal of the main set antenna (the main set antenna is the first antenna in step S101), and does not receive the signal to the diversity antenna (the diversity antenna is the second antenna in step S101).
  • the signal strength of the time is measured, but the terminal records the signal strength of the main set antenna when receiving the signal, and analyzes the change of the signal strength within a preset time period, when the signal strength decreases during the preset time period. The amplitude is large. If the first threshold is exceeded, the signal strength when the diversity antenna receives the signal is measured, which can reduce the measurement power consumption.
  • the terminal receives and transmits a signal through the main set antenna, and the diversity antenna does not receive or transmit the signal, and when the signal strength when the main set antenna receives the signal is less than the first threshold, The signal is received by the diversity antenna and the signal strength when the diversity antenna receives the signal is measured, which further reduces the measurement power consumption.
  • the first antenna may receive (or transmit) a high frequency (1800 MHz to 2400 MHz) signal (such as LTE B1 and B2 band signals) and a low frequency (800 MHz to 900 MHz) signal (such as a GSM900 signal).
  • the second antenna can also receive (or transmit) the high frequency signal and the low frequency signal, so that the first antenna and the second antenna can receive (or transmit) the high frequency signal and the low frequency signal, specifically for the first antenna and the second antenna.
  • the physical structure (such as length, width, shape, thickness, etc.), circuit parameters, or other quantities are set to achieve.
  • Step S102 The terminal determines whether the switching condition is met according to the signal strength when the first antenna receives the signal and the signal strength when the second antenna receives the signal.
  • the measured signal strength of the first antenna when receiving the signal is the first signal strength
  • the measured signal strength of the second antenna when receiving the signal is the second signal strength
  • the terminal is based on the first
  • the signal strength and the second signal strength are used to determine whether the switching condition is satisfied. For example, if the first antenna is a diversity antenna and the second antenna is a diversity antenna, the switching condition is to switch the first antenna to a diversity antenna, and switch the second antenna to Set the conditions of the antenna.
  • determining, by the terminal, whether the signal strength is received when the first antenna receives the signal and the signal strength when the second antenna receives the signal, determining whether the handover condition is met includes: determining the Whether the signal strength when an antenna receives a signal is less than a second threshold, and whether the signal strength when the second antenna receives the signal is higher than a signal strength when the first antenna receives the signal by a third threshold.
  • the second threshold and the third threshold are both according to actual needs, according to the preset threshold, if the first signal strength (ie, the signal strength of the current main set antenna) is weaker than the second threshold, and the second signal When the strength (ie, the signal strength of the current diversity antenna) is higher than the first signal strength by a third threshold, it indicates that the above switching condition is satisfied, that is, the current set antenna with weak current signal strength is switched to the diversity antenna, and the signal strength is compared. The condition that a good diversity antenna switches to the main set antenna.
  • determining, by the terminal according to the signal strength when the first antenna receives the signal and the signal strength when the second antenna receives the signal, determining whether the handover condition is met includes: determining, by the first antenna, Whether the signal strength at the time of the signal is less than a second threshold, and whether the signal strength when the second antenna receives the signal is higher than a fourth threshold.
  • the second threshold and the fourth threshold are both based on a preset threshold according to actual needs. If the first signal strength (ie, the signal strength of the current main set antenna) is weaker than the second threshold, and the second signal strength (ie, the signal strength of the current diversity antenna) is higher than the fourth threshold, it indicates that the above switching is satisfied.
  • the condition is that the main set antenna with weak current signal strength is switched to the diversity antenna, and the diversity antenna with better signal strength is switched to the condition of the main set antenna.
  • the schemes of the terminals may be different, but the first signal is based on the first signal without exception. The strength and the second signal strength are used for judgment, and the other schemes are not described here.
  • TDSCDMA Time Division-Synchronous Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile
  • WCDMA Wideband Code Division Multiple Access
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • the thresholds (such as the first threshold, the second threshold, the third threshold, and the like) described in the embodiments of the present invention may be further determined by using a terminal system; for example, for a terminal with a CDMA system, The first threshold may be -110 db, for the terminal of the GSM system, the above The first threshold may be -80db.
  • Step S103 If yes, the terminal switches the first antenna to a diversity antenna, and switches the second antenna to a main set antenna.
  • the terminal switches the role of the first antenna from the primary antenna to the diversity antenna, and switches the role of the second antenna from the diversity antenna to the primary antenna.
  • the terminal switching the first antenna to a diversity antenna, and switching the second antenna to a main set antenna includes: the terminal is configured by a double-pole double-throw switch The circuit of one antenna connection and the circuit of the second antenna are swapped.
  • FIG. 1B is a schematic structural diagram of a control circuit according to an embodiment of the present invention.
  • 151 is a first antenna
  • 152 is a second antenna
  • 153 is a main antenna interface, 154.
  • the diversity antenna interface, 155 is a signal processing circuit, and 156 is a double-pole double-throw switch; wherein, the antenna electrically connected to the main set antenna interface 153 is a main set antenna, and the antenna electrically connected to the diversity antenna interface 154 is a diversity antenna, Which of the antenna 151 and the second antenna 152 is connected to the main antenna interface phase 153, and which antenna is connected to the diversity antenna interface 154 can be controlled by the double pole double throw switch 156, that is, as described above
  • the circuit connected to the first antenna 151 and the circuit of the second antenna 152 are swapped.
  • the connection of the circuit of FIG. 1B after switching by the double-pole double-throw switch 156 is as shown in FIG. 1C. It should be noted that the switching of the main pole antenna by the double pole double throw switch 156 may be specifically controlled by a modem in the terminal, wherein the modem may be specifically controlled by a program code.
  • the first antenna and the second antenna disposed at different positions of the terminal are respectively configured as a main set antenna and a diversity antenna, and if the signal of the first antenna as the main set antenna is weak,
  • the second antenna which is a diversity antenna, is configured as a main set antenna, and the first antenna is configured as a diversity antenna, so that the antenna with good signal is always the main antenna in the first antenna and the second antenna, and the normal communication of the terminal is ensured.
  • FIG. 2 is a schematic structural diagram of a terminal 20 according to an embodiment of the present invention.
  • the terminal 20 may include a measuring unit 201, a determining unit 202, and a switching unit 203, where each single
  • the detailed description of the yuan is as follows.
  • the measuring unit 201 is configured to measure a signal strength when the first antenna receives the signal and a signal strength when the second antenna receives the signal, wherein the first antenna and the second antenna are disposed at different positions on the terminal 20, and The first antenna is a main set antenna, and the second antenna is a diversity antenna;
  • the determining unit 202 is configured to determine whether the switching condition is met according to the signal strength when the first antenna receives the signal and the signal strength when the second antenna receives the signal;
  • the switching unit 203 is configured to switch the first antenna to a diversity antenna and the second antenna to a primary antenna when the determining unit 202 determines that the handover condition is satisfied.
  • the measuring unit 201 may also be the structure shown in FIG. 2A.
  • the measuring unit 201 includes a first measuring subunit 2011, a determining subunit 2012, and a second measuring subunit 2013. , wherein the detailed description of each subunit is as follows.
  • the first measurement subunit 2011 is configured to measure a signal strength when the first antenna receives a signal in a preset time period
  • the determining subunit 2012 is configured to determine whether a difference between a signal strength measured at an end time point of the preset time period and a signal strength measured at a starting time point of the preset time period reaches a first threshold;
  • the second measurement subunit 2013 is configured to measure the signal strength when the second antenna receives the signal when the determination result of the determination subunit 2012 is YES.
  • the determining unit 202 is specifically configured to determine whether the signal strength when the first antenna receives the signal is less than a second threshold, and determine whether the signal strength of the second antenna when receiving the signal is greater than The signal strength when the first antenna receives the signal is higher than the third threshold, and if the determination result is yes, the switching condition is satisfied.
  • the switching unit 203 is specifically configured to swap the circuit of the first antenna and the circuit of the second antenna by a double-pole double-throw switch.
  • each unit may also correspond to the corresponding description of the method embodiment shown in FIG. 1 .
  • the first antenna and the second antenna disposed at different positions of the terminal 20 are respectively configured as a main set antenna and a diversity antenna, and if the signal of the first antenna as the main set antenna is weak,
  • the second antenna, which is a diversity antenna, is configured as a primary antenna, and the first antenna is configured as a
  • the antenna is set such that the antenna with better signal is always the main antenna in the first antenna and the second antenna, and the normal communication of the terminal 20 is ensured.
  • FIG. 3 is a schematic structural diagram of still another terminal 30 according to an embodiment of the present invention.
  • the terminal 30 may include: at least one memory 301, a baseband chip 302, a radio frequency module 303, a peripheral system 304, a sensor 305, and a communication.
  • the memory 301 is used to store an operating system, a network communication program, a user interface program, a control program, and the like;
  • the baseband chip 302 includes at least one processor 3021, such as a digital signal processing (DSP) chip, a clock module 3022, and a power supply.
  • DSP digital signal processing
  • the management module 3023; the peripheral system 304 includes a camera controller 3042, an audio controller 3043, a touch display controller 3044, and a sensor management module 3045, and correspondingly, a camera 3047, an audio circuit 3048, and a touch display screen 3049; further,
  • the sensor 305 may include a light sensor, a displacement sensor, an acceleration sensor, a fingerprint sensor, etc. In general, the sensor 305 may be increased or decreased according to actual needs; the memory 301 may be a high speed RAM memory or a non-volatile memory (non-volatile memory). ), for example at least one disk storage.
  • the memory 305 can optionally also be at least one storage device located remotely from the aforementioned processor 3021.
  • the processor 3021 can be used to call a control program stored in the memory 301 to perform the following operations:
  • the first antenna and the second antenna are disposed at different positions on the terminal 30, and the first antenna a main set antenna, and the second antenna is a diversity antenna;
  • the first antenna is switched to a diversity antenna, and the second antenna is switched to a main set antenna.
  • measuring the signal strength when the first antenna receives the signal and the signal strength when the second antenna receives the signal include:
  • the signal strength when the second antenna receives the signal is measured.
  • determining whether the handover condition is met according to the signal strength when the first antenna receives the signal and the signal strength when the second antenna receives the signal includes:
  • the frequency range received by the first antenna and the frequency range received by the second antenna both include high frequency and low frequency.
  • switching the first antenna to a diversity antenna and switching the second antenna to a primary antenna includes:
  • the circuit of the first antenna connection and the circuit of the second antenna are swapped by a double pole double throw switch.
  • the first antenna and the second antenna disposed at different positions of the terminal are respectively configured as a primary antenna and a diversity antenna, and if the signal of the first antenna as the primary antenna is weak
  • the second antenna which is a diversity antenna, is configured as a main set antenna
  • the first antenna is configured as a diversity antenna, so that the first antenna and the second antenna are always the antennas with better signals as the main set antenna, thereby ensuring the terminal. Normal communication.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种天线切换方法及终端，该方法包括：终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，第一天线和第二天线设置在终端上不同位置，且第一天线为主集天线，第二天线为分集天线；终端根据第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；若满足，则终端将第一天线切换为分集天线，以及将第二天线切换为主集天线。采用本发明，可以在用户手握终端导致信号急剧下降时，终端依然能够保持正常通信。

Description

一种天线切换方法及终端
本申请要求于2015年10月31日提交中国专利局，申请号为201510737285.1、发明名称为“一种天线切换方法及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种天线切换方法及终端。
背景技术
近年来，智能手机的发展较为迅猛，人们可以通智能手机来拍照、在线听歌、视频聊天、上网、打电话等，可以说智能手机的快速发展极大地提升了人们的生活品质。智能手机一般包含至少两根天线，分别布局在智能手机上端和下端，上端的天线用来接收和发射高频信号，如长期演进(Long Term Evolution，LTE)的B1和B2频段的信号；下端的天线用来接收和发射低频信号，如全球移动通讯系统(Global System for Mobile Communications，GSM)900M频段的信号。
用户在手握智能手机时，如果握持了某根天线所在的部位，那么该天线的信号就会在一定程度上受到屏蔽，致使该天线的信号急剧下降，影响了智能手机的正常通信。
发明内容
本发明实施例公开了一种天线切换方法及终端，在用户手握终端导致信号急剧下降时，终端依然能够保持正常通信。
第一方面，本发明实施例提供了一种天线切换方法，该方法包括：
终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
若满足，则所述终端将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
结合第一方面，在第一方面的第一种可能的实现方式中，所述终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度包括：
所述终端在预设时间段测量第一天线接收信号时的信号强度；
所述终端判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；
若到达，则所述终端测量第二天线接收信号时的信号强度。
结合第一方面，或者第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件包括：
判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
结合第一方面，或者第一方面的第一种可能的实现方式，在第一方面的第三种可能的实现方式中，在接收信号时，所述第一天线接收的频率范围和所述第二天线接收的频率范围均包括高频和低频。
结合第一方面，或者第一方面的第一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述终端将所述第一天线切换为分集天线，并将所述第二天线切换为主集天线包括：
所述终端通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
第二方面，本发明实施例提供一种终端，该终端包括：
测量单元，用于测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
判断单元，用于根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
切换单元，用于在所述判断单元判断出满足切换条件时，将所述第一天 线切换为分集天线，以及将所述第二天线切换为主集天线。
结合第二方面，在第二方面的第一种可能的实现方式种，所述测量单元包括：
第一测量子单元，用于在预设时间段测量第一天线接收信号时的信号强度；
判断子单元，用于判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；
第二测量子单元，用于在所述判断子单元的判断结果为是时，测量第二天线接收信号时的信号强度。
结合第二方面，或者第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述判断单元具体用于判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
结合第二方面，或者第二方面的第一种可能的实现方式，在第二方面的第三种可能的实现方式中，在接收信号时，所述第一天线接收的频率范围和所述第二天线接收的频率范围均包括高频和低频。
结合第二方面，或者第二方面的第一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述切换单元具体用于通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
通过实施本发明实施例，将设置于终端不同位置处的第一天线和第二天线分别配置为主集天线和分集天线，如果作为主集天线的第一天线的信号较弱，则将作为分集天线的第二天线配置为主集天线，并将第一天线配置为分集天线，使得第一天线和第二天线中始终是信号较好的天线作为主集天线，保证了终端的正常通通信。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种天线切换方法的流程示意图；
图1A是本发明实施例提供的一种终端天线的结构示意图；
图1B是本发明实施例提供的一种控制电路的结构示意图；
图1C是本发明实施例提供的又一种控制电路的结构示意图；
图2是本发明实施例提供的一种终端的结构示意图；
图2A是本发明实施例提供的一种测量单元的结构示意图；
图3是本发明实施例提供的又一种终端的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。另外，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
本发明实施例所描述的终端可以是手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(MID，mobile internet device)、可穿戴设备(例如智能手表(如iWatch等)、智能手环、计步器等)或其他可设置天线的通信模块。
请参见图1，图1是本发明实施例提供的一种天线切换方法的流程示意图，该方法包括但不限于如下步骤。
步骤S101：终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线。
具体地，终端上设置有至少两根天线，该至少两根天线包括第一天线和第二天线，分别设置在终端上的不同位置；举例来说，请参照图1A，在图1A中第一天线111和第二天线112为分别设置在终端(如手机)的上端和下端，一般情况下，该第一天线111和第二天线112封在终端内，如果不打开终端的外壳一般看不到该第一天线111和第二天线112。进一步地，终端上还可以包括除第一天线和第二天线以外的其他天线，该其他天线具体如何运作此处不作限制。
进一步地，终端采用主集天线和分集天线共同运行的机制来接收和发射信号，即通过主集天线接收和发射信号，同时通过分集天线接收信号。在本发明实施例中，上述第一天线和第二天线对应该主集天线和分集天线，具体哪根天线对应主集天线，哪根天线对应分集天线此处不作限制，因为在本发明实施例中，终端会根据实际需要来确定哪根天线对应主集天线，哪根天线对应分集天线。在执行步骤S101时，终端根据需要设置了第一天线对应主集天线，以及第二天线对应分集天线。
进一步地，在测量信号强度的过程中，测量的量包括参考信号接收功率(Reference Signal Received Power，RSRP)和参考信号接收质量(Reference Signal Received Quality，RSRQ)中至少一项。需要说明的是，终端对第一天线接收信号时的信号强度和第二天线接收信号时的信号强度的测量是分开进行的，也即是说，最终能够得到第一天线对应的信号强度和第二天线对应的信号强度；另外，终端对第一天线接收信号时的信号强度和第二天线接收信号时的信号强度的测量可以同步进行也可以按照预先设定的顺序来进行，优选的方案为两者同时进行。
再进一步地，在一种可选的方案中，所述终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度包括：所述终端在预设时间段测量 第一天线接收信号时的信号强度；所述终端判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；若到达，则所述终端测量第二天线接收信号时的信号强度。
具体地，终端先对主集天线(在步骤S101中主集天线为第一天线)的接收信号时的信号强度进行测量，而不对分集天线(在步骤S101中分集天线为第二天线)接收信号时的信号强度进行测量，但是终端会对主集天线接收信号时的信号强度进行实时的记录，并且分析信号强度在预设时间段内的变化情况，当在该预设时间段内信号强度下降幅度较大，如超过第一阈值时，再测量分集天线接收信号时的信号强度，这样可以降低测量功耗。
在又一种可选的方案中，终端通过主集天线接收和发射信号，而分集天线则不接收也不发射信号，待判断出主集天线接收信号时的信号强度小于第一阈值时，才通过分集天线接收信号，并测量分集天线接收信号时的信号强度，这样进一步地降低了测量功耗。
需要说明的是，上述第一天线可以接收(或发送)高频(1800MHz～2400MHz)信号(如LTE的B1、B2波段的信号)和低频(800MHz～900MHz)信号(如GSM900的信号)，上述第二天线同样也可以接收(或发送)高频信号和低频信号，要使第一天线和第二天线能够接收(或发送)高频信号和低频信号，可以具体对第一天线和第二天线的物理结构(如长度、宽度、形状、粗细程度等)、电路参数、或者其他的量进行设置来实现。
步骤S102：所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件。
具体地，为了描述方便，令测量到的第一天线接收信号时的信号强度为第一信号强度，令测量到的第二天线接收信号时的信号强度为第二信号强度，终端基于该第一信号强度和第二信号强度来判断是否满足切换条件。举例来说，如果在进行判断时，第一天线为主集天线，第二天线为分集天线，那么该切换条件为将该第一天线切换为分集天线的，并将该第二天线切换为主集天线的条件。
在一种可选的方案中，所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件包括：判断所述第 一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值。
具体地，该第二阈值和第三阈值均为根据实际需要预先根据设定的阈值，如果第一信号强度(即当前的主集天线的信号强度)弱到小于第二阈值，并且第二信号强度(即当前的分集天线的信号强度)比第一信号强度高出第三阈值时，则表明满足上述切换条件，即将当前信号强度较弱的主集天线切换为分集天线，并将信号强度较好的分集天线切换为主集天线的条件。
在又一种可选的方案中，所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件包括：判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否高于第四阈值。
具体地，该第二阈值和第四阈值均为根据实际需要预先根据设定的阈值。如果第一信号强度(即当前的主集天线的信号强度)弱到小于第二阈值，并且第二信号强度(即当前的分集天线的信号强度)高于第四阈值时，则表明满足上述切换条件，即将当前信号强度较弱的主集天线切换为分集天线，并将信号强度较好的分集天线切换为主集天线的条件。
需要说明的是，上述列举出了一些可选的用来判断是否满足切换条件的方案，在实际应用中，终端的制式不同则方案也有可能不同，但是毫无例外地都是基于上述第一信号强度和第二信号强度来进行判断，此处不再对其他方案一一描述。
进一步地，终端可能的制式包括时分同步的码分多址(Time Division-Synchronous Code Division Multiple Access，TDSCDMA)、码分多址(Code Division Multiple Access，CDMA)、全球移动通信系统(Global System for Mobile Communication，GSM)、宽带码分多址(Wideband CodeDivision MultipleAccess，WCDMA)、频分双工(Frequency Division Duplexing，FDD)、时分双工(Time Division Duplexing，TDD)等。
再进一步地，本发明实施例中描述的阈值(如第一阈值、第二阈值、第三阈值等)都是还可以进一步结合终端的制式来确定；举例来说，对于制式为CDMA的终端，上述第一阈值可能为-110db，对于制式为GSM的终端，上述 第一阈值可能为-80db。
步骤S103：若满足，则所述终端将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
具体地，如果判断出满足切换条件，则终端将上述第一天线的角色从主集天线切换到分集天线，将上述第二天线的角色从分集天线切换到主集天线。
在一种可选的方案中，所述终端将所述第一天线切换为分集天线，并将所述第二天线切换为主集天线包括：所述终端通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
具体地，请参见图1B，图1B是本发明实施例提供的一种控制电路的结构示意图，在图1B中，151为第一天线、152为第二天线、153为主集天线接口、154为分集天线接口、155为信号处理电路、156为双刀双掷开关；其中，与主集天线接口153电连接的天线为主集天线，与分集天线接口154电连接的天线为分集天线，第一天线151和第二天线152中具体哪根天线与主集天线接口相153连接，哪根天线与分集天线接口154连接可以通过双刀双掷开关156来控制，即上述所说的将所述第一天线151连接的电路和所述第二天线152的电路对换。图1B中的电路通过双刀双掷开关156切换完后的连接方式如图1C所示。需要说明的是，上述双刀双掷开关156对主集天线的切换可以具体受终端中的调制解调器(modem)来控制，其中，调制解调器可以具体通过程序代码来控制。
在图1所描述的方法中，将设置于终端不同位置处的第一天线和第二天线分别配置为主集天线和分集天线，如果作为主集天线的第一天线的信号较弱，则将作为分集天线的第二天线配置为主集天线，并将第一天线配置为分集天线，使得第一天线和第二天线中始终是信号较好的天线作为主集天线，保证了终端的正常通通信。
上述详细阐述了本发明实施例的方法，为了便于更好地实施本发明实施例的上述方案，相应地，下面提供了本发明实施例的装置。
请参见图2，图2是本发明实施例提供的一种终端20的结构示意图，该终端20可以包括测量单元201、判断单元202和切换单元203，其中，各个单 元的详细描述如下。
测量单元201用于测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端20上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
判断单元202用于根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
切换单元203用于在所述判断单元202判断出满足切换条件时，将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
在一种可选的方案中，上述测量单元201还可以为图2A所示的结构，在图2A中，测量单元201包括第一测量子单元2011、判断子单元2012和第二测量子单元2013，其中，各个子单元的详细描述如下。
第一测量子单元2011用于在预设时间段测量第一天线接收信号时的信号强度；
判断子单元2012用于判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；
第二测量子单元2013用于在所述判断子单元2012的判断结果为是时，测量第二天线接收信号时的信号强度。
在又一种可选的方案中，判断单元202具体用于判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
在又一种可选的方案中，所述切换单元203具体用于通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
需要说明的是，在本发明实施例中，各个单元的具体实现还可以对应参照图1所示的方法实施例的相应描述。
在图2所描述的终端20中，将设置于终端20不同位置处的第一天线和第二天线分别配置为主集天线和分集天线，如果作为主集天线的第一天线的信号较弱，则将作为分集天线的第二天线配置为主集天线，并将第一天线配置为分 集天线，使得第一天线和第二天线中始终是信号较好的天线作为主集天线，保证了终端20的正常通通信。
请参照图3，图3是本发明实施例提供的又一种终端30的结构示意图，该终端30可以包括：至少一个存储器301、基带芯片302、射频模块303、外围系统304、传感器305和通信总线306。其中，存储器301用于存储操作系统、网络通信程序、用户接口程序、控制程序等；基带芯片302包括至少一个处理器3021，例如数字信号处理(Digital Signal Processing，DSP)芯片，时钟模块3022和电源管理模块3023；外围系统304包括摄像头控制器3042、音频控制器3043、触摸显示屏控制器3044和传感器管理模块3045，相应地，还包括摄像头3047、音频电路3048和触摸显示屏3049；进一步地，传感器305可以包括光线传感器、位移传感器、加速度传感器、指纹传感器等，总而言之，传感器305可以视实际需要来增加或者减少；存储器301可以是高速RAM存储器，也可以是非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器305可选的还可以是至少一个位于远离前述处理器3021的存储装置。
在图3所示的终端30中，处理器3021可以用于调用存储器301中存储的控制程序来执行以下操作：
测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端30上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
若满足，则将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
可选的，测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度包括：
在预设时间段测量第一天线接收信号时的信号强度；
判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间 段的起始时间点测量的信号强度的差值是否达到第一阈值；
若到达，则测量第二天线接收信号时的信号强度。
可选的，根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件包括：
判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
可选的，在接收信号时，所述第一天线接收的频率范围和所述第二天线接收的频率范围均包括高频和低频。
可选的，将所述第一天线切换为分集天线，并将所述第二天线切换为主集天线包括：
通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
综上所述，通过实施本发明实施例，将设置于终端不同位置处的第一天线和第二天线分别配置为主集天线和分集天线，如果作为主集天线的第一天线的信号较弱，则将作为分集天线的第二天线配置为主集天线，并将第一天线配置为分集天线，使得第一天线和第二天线中始终是信号较好的天线作为主集天线，保证了终端的正常通通信。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (10)

  1. 一种天线切换方法，其特征在于，包括：
    终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
    所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
    若满足，则所述终端将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
  2. 根据权利要求1所述的方法，其特征在于，所述终端测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度包括：
    所述终端在预设时间段测量第一天线接收信号时的信号强度；
    所述终端判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；
    若到达，则所述终端测量第二天线接收信号时的信号强度。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件包括：
    判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
  4. 根据权利要求1或2所述的方法，其特征在于，在接收信号时，所述第一天线接收的频率范围和所述第二天线接收的频率范围均包括高频和低频。
  5. 根据权利要求1或2所述的方法，其特征在于，所述终端将所述第一天线切换为分集天线，并将所述第二天线切换为主集天线包括：
    所述终端通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
  6. 一种终端，其特征在于，包括：
    测量单元，用于测量第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，其中，所述第一天线和所述第二天线设置在所述终端上不同位置，且所述第一天线为主集天线，所述第二天线为分集天线；
    判断单元，用于根据所述第一天线接收信号时的信号强度和第二天线接收信号时的信号强度，判断是否满足切换条件；
    切换单元，用于在所述判断单元判断出满足切换条件时，将所述第一天线切换为分集天线，以及将所述第二天线切换为主集天线。
  7. 根据权利要求6所述的终端，其特征在于，所述测量单元包括：
    第一测量子单元，用于在预设时间段测量第一天线接收信号时的信号强度；
    判断子单元，用于判断在所述预设时间段的结束时间点测量的信号强度与在所述预设时间段的起始时间点测量的信号强度的差值是否达到第一阈值；
    第二测量子单元，用于在所述判断子单元的判断结果为是时，测量第二天线接收信号时的信号强度。
  8. 根据权利要求6或7所述的终端，其特征在于，所述判断单元具体用于判断所述第一天线接收信号时的信号强度是否小于第二阈值，以及判断所述第二天线接收信号时的信号强度是否比所述第一天线接收信号时的信号强度高出第三阈值，若判断结果都为是，则满足所述切换条件。
  9. 根据权利要求6或7所述的终端，其特征在于，在接收信号时，所述第一天线接收的频率范围和所述第二天线接收的频率范围均包括高频和低频。
  10. 根据权利要求6或7所述的终端，其特征在于，所述切换单元具体用于通过双刀双掷开关将所述第一天线连接的电路和所述第二天线的电路对换。
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