WO2017166353A1 - 一种载波聚合电路实现方法、实现系统及移动终端 - Google Patents

一种载波聚合电路实现方法、实现系统及移动终端 Download PDF

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Publication number
WO2017166353A1
WO2017166353A1 PCT/CN2016/080604 CN2016080604W WO2017166353A1 WO 2017166353 A1 WO2017166353 A1 WO 2017166353A1 CN 2016080604 W CN2016080604 W CN 2016080604W WO 2017166353 A1 WO2017166353 A1 WO 2017166353A1
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Prior art keywords
band signal
external
signal
frequency band
antenna
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PCT/CN2016/080604
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English (en)
French (fr)
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王伟
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017166353A1 publication Critical patent/WO2017166353A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets

Definitions

  • the present invention relates to the field of carrier aggregation technologies, and in particular, to a carrier aggregation circuit implementation method, implementation system, and mobile terminal.
  • CA Carrier Aggregation
  • the present invention provides a carrier aggregation circuit implementation method, implementation system, and mobile terminal, so as to implement FDD-LTE B1+B3 inter-band CA without using four duplexers or increasing the number of antennas.
  • the present invention provides a carrier aggregation circuit implementation system, which is applied to a mobile terminal, and the system includes:
  • a first antenna configured to receive an external B1 frequency band signal, and output the external B1 frequency band signal to the processor
  • the WIFI antenna is configured to receive an external signal including an external B3 band signal or an external WIFI signal, and output the external signal to the identification circuit;
  • the identification circuit is configured to identify whether the external signal is a B3 frequency band signal, and if yes, output the identified B3 frequency band signal to the processor;
  • the processor is configured to acquire and utilize the external B1 frequency band signal output by the first antenna and the identified B3 frequency band signal output by the identification circuit to implement B1+B3 inter-band CA of FDD-LTE .
  • the first antenna is further configured to receive an external B39 frequency band signal and an external B41 frequency band signal, and output the external B39 frequency band signal and the external B41 frequency band signal to the processor.
  • the first antenna and the WIFI antenna are both a main set antenna
  • the first antenna is specifically configured to receive, by the primary set, the external B1 frequency band signal, the external B39 frequency band signal, and the external B41 frequency band signal;
  • the WIFI antenna is specifically configured to receive the external B3 frequency band signal by a primary set
  • the system also includes:
  • a diversity antenna configured to receive the B1 frequency band signal, the B3 frequency band signal, the B39 frequency band signal, and the B41 frequency band signal, and separately receive the received B1 frequency band signal, the B3 frequency band signal, The B39 band signal and the B41 band signal are output to the processor.
  • the identifying circuit is further configured to: when the external signal is recognized as a WIFI signal, output the identified WIFI signal to a corresponding WLAN receiving port.
  • the identification circuit is specifically a first frequency divider, and the first frequency divider is configured to identify whether the external signal is the B3 frequency band signal according to a frequency band range of the B3 frequency band signal.
  • the method further comprises:
  • a radio frequency filter disposed between the first frequency divider and the processor, configured to filter out signals from the first frequency divider other than the B3 frequency band signal, and The processor outputs the filtered signal.
  • the first antenna is further configured to transmit an internal B1 frequency band signal; the WIFI antenna is further configured to transmit an internal B3 frequency band signal.
  • the present invention also provides a mobile terminal comprising a processor and a memory, wherein the memory stores a set of program codes, and the processor is configured to call program code stored in the memory for performing the following operations:
  • the processor further performs:
  • the first antenna and the WIFI antenna are both a main set antenna
  • the processor also executes:
  • the B1 band signal, the B3 band signal, the B39 band signal, and the B41 band signal are received by diversity through a diversity antenna.
  • the processor further performs:
  • the identification circuit When the identification circuit recognizes that the external signal is a WIFI signal, the identified WIFI signal is output to a corresponding WLAN receiving port.
  • the identification circuit is specifically a first frequency divider, and the processor identifies, by the first frequency divider, whether the external signal is the B3 frequency band signal according to a frequency band range of the B3 frequency band signal.
  • processor further executes:
  • the processor further performs: transmitting an internal B1 frequency band signal by using the first antenna; and transmitting an internal B3 frequency band signal by using the WIFI antenna.
  • the first antenna receives the external B1 frequency band signal, and outputs the external B1 frequency band signal to the processor;
  • the WIFI antenna receives an external signal including an external B3 band signal or an external WIFI signal, and outputs the external signal to the identification circuit;
  • the identification circuit identifies whether the external signal is a B3 band signal, and if so, outputs the identified B3 band signal to the processor;
  • the processor acquires and utilizes the external B1 frequency band signal output by the first antenna and the identified B3 frequency band signal output by the identification circuit to implement B1+B3 inter-band CA of FDD-LTE.
  • the method further comprises:
  • the first antenna receives an external B39 frequency band signal and an external B41 frequency band signal, and outputs the external B39 frequency band signal and the external B41 frequency band signal to the processor.
  • the carrier aggregation circuit implementation system includes a first antenna, a WIFI antenna, an identification circuit, and a processor.
  • the first antenna receives an external B1 frequency band signal, and outputs the external B1 frequency band to the processor.
  • a signal the WIFI antenna receives an external signal including an external B3 band signal or an external WIFI signal, and outputs the external signal to the identification circuit;
  • the identification circuit identifies whether the external signal is a B3 band signal, and if so,
  • the processor outputs the identified B3 frequency band signal; the processor acquires and utilizes the external B1 frequency band signal output by the first antenna and the identified B3 frequency band signal output by the identification circuit to implement FDD- B1+B3 inter-band CA for LTE.
  • the mobile terminal In the actual application, the mobile terminal must have a WIFI antenna and another antenna for transmitting and receiving non-WIFI signals. Therefore, in the present invention, the FDD-LTE B3 band signal and the WIFI signal are coexistent.
  • the WIFI antenna enables the B1 band signal and the B3 band signal to be transmitted to the corresponding receiving port on the total transceiver through different antennas without using the four-worker or increasing the number of antennas, thereby realizing China Telecom and China Unicom.
  • FDD-LTE B1+B3 inter-band CA FDD-LTE B1+B3 inter-band CA.
  • FIG. 1 is a schematic structural block diagram of a carrier aggregation circuit implementation system according to an embodiment of the present disclosure
  • FIG. 2 is a structural block diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of another application scenario according to an embodiment of the present disclosure.
  • FIG. 4 is a structural diagram of still another application scenario according to an embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a method for implementing a carrier aggregation circuit according to an embodiment of the present invention
  • FIG. 6 is a structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the core of the present invention is to provide a carrier aggregation circuit implementation method, implementation system and mobile terminal to implement FDD-LTE B1+B3 inter-band CA without using four quadrants or increasing the number of antennas.
  • Carrier aggregation for wider bandwidth is the most efficient way to increase throughput.
  • Operators have vigorously developed carrier aggregation technology to improve network transmission speed.
  • CAT4 download rate supporting LTE is 150Mbps
  • carrier aggregation 2*20MHZ CAT6 can make The download rate can be up to 300Mbps.
  • Carrier aggregation frequency selection and antenna channel planning analysis for TDD-LTE and FDD-LTE China Mobile's CA requires support for continuous 2 carrier aggregation in Band39, Band40, Band41 bands and support for 2-carrier aggregation between Band39 and Band41 bands; China Telecom and China Unicom's CA require terminals to support Band1+Band3 inter-band CA and B3 in-band continuous 2-carrier aggregation.
  • WIFI dual-band 2.4G and 5.8G frequency and bandwidth are abbreviated as B39, and the other is the same. See the table below for details:
  • the FDD-LTE BAND3 (abbreviated as B3) uplink 1710MHz-1785MHz and the downlink 1805MHz-1880MHz frequency belong to the intermediate frequency band, and the WIFI frequency band is 2402MHz-2482MHz and 5725MHz-5850MHz, belonging to the high frequency band frequency.
  • the frequency interval between FDD-LTE B3 and WIFI 2.4G and 5.8G is (2402-1880) 522MHZ, which can realize FDD-LTE B3 frequency band through RF device crossover. Physical separation from the 2.4G and 5.8G bands of WIFI. Further, the isolation can be further increased by the RF filter, thereby realizing the coexistence of B3 and WIFI of FDD-LTE.
  • B1 and B3 and WIFI are different antenna connections, so that B1 and B3 can be simultaneously passed through different antennas to the port of the transceiver (total transceiver) to realize the FDD-LTE B1+B3 band between China Telecom and China Unicom. CA.
  • FIG. 1 is a block diagram showing a structure of a carrier aggregation circuit implementation system according to an embodiment of the present disclosure.
  • the system is applied to a mobile terminal, which may specifically include a first antenna 100, a WIFI antenna 101, and an identification circuit 102. And a processor 103, wherein:
  • the first antenna is configured to receive an external B1 frequency band signal, and output an external B1 frequency band signal to the processor 103;
  • the WIFI antenna is configured to receive an external signal including an external B3 frequency band signal or an external WIFI signal, and output the external signal to the identification circuit; a circuit for identifying whether the external signal is a B3 band signal, and if so, outputting the identified B3 band signal to the processor 103;
  • the processor 103 is configured to acquire and utilize the external B1 band signal and the identification circuit output by the first antenna
  • the output of the identified B3 band signal realizes B1+B3 inter-band CA of FDD-LTE.
  • the processor 103 may acquire the signal received by each antenna through the total transceiver Transceiver or transmit the signal to be transmitted by the Transceiver to each antenna.
  • the total transceiver has a receiving port and a transmitting port that receive and transmit each signal.
  • the focus of the present invention is to transmit signals of the external B1 frequency band signal and the external B3 frequency band signal to the processor 103.
  • the processor 103 to implement FDD-LTE B1+B3 inter-band CA and other processes, reference may be made to the prior art. The invention is not described here. Based on this, the following description of the present invention mainly describes the process of transmitting each signal to the corresponding port of the total transceiver.
  • the first antenna 100 when receiving the external B1 frequency band signal from the network side, the first antenna 100 outputs the external B1 frequency band signal to the B1 receiving port (RX B1) of the Transceiver, and the Transceiver forwards the external B1 frequency band signal to the processor 103.
  • RX B1 B1 receiving port
  • Other signals are similar.
  • the WIFI antenna 101 receives an external signal including an external B3 band signal or an external WIFI signal, and outputs the received external signal to the identification circuit.
  • the WIFI antenna 101 since the Bluetooth signal band is 2400-2483.5MHz, in practice, Bluetooth and WIFI share an antenna. Therefore, the WIFI antenna 101 here is not an antenna of the WIFI signal in a strict sense. It is an antenna that can work in the 2.4G WIFI band.
  • the external signal that the WIFI antenna 101 can receive, in addition to the external B3 band signal and the external WIFI signal may also be a signal in a 2.4G WIFI band such as a Bluetooth signal.
  • the identification circuit 102 receives the external signal transmitted by the WIFI antenna 101, and identifies whether the external signal is a B3 frequency band signal, and if so, outputs the identified B3 frequency band signal to the total transmission and reception.
  • the B3 receiving port RX B3.
  • the identification circuit 102 outputs the identified WIFI signal to the corresponding WLAN receiving port.
  • system of the present invention may further include a radio frequency filter disposed between the identification circuit 102 and the processor 103 for filtering out signals other than the B3 band signal among the signals from the identification circuit 102, and to the processor 103.
  • the filtered signal is output.
  • all signals received by the first antenna 100 and the WIFI antenna 101 including the external B1 frequency band signal, the external B3 frequency band signal and the external WIFI signal, are transmitted to the corresponding receiving port of the Transceiver, and then Transceiver takes over the subsequent processing.
  • the process in turn, achieves the inter-band polymerization of B1+B3.
  • This process and implementation process can refer to the prior art, and the present invention will not be described in detail herein. Other signals in this paper are similar.
  • the first antenna 100 can also be used to transmit an internal B1 band signal from the B1 transmission port (TX B1); the WIFI antenna 101 can also be used to transmit from the B3 transmission port (TX B3).
  • the internal B3 band signal can also be used to transmit an internal B1 band signal from the B1 transmission port (TX B1); the WIFI antenna 101 can also be used to transmit from the B3 transmission port (TX B3).
  • the identification circuit 102 may specifically be a first frequency divider (DIP1), and the first frequency divider DIP1 identifies whether the external signal is a B3 frequency band signal according to a frequency band range of the B3 frequency band signal.
  • DIP1 first frequency divider
  • the first antenna (ANT1) 100 is responsible for transmitting and receiving signals of the B1 band
  • the WIFI antenna 101 (ANT2) 101 is responsible for transmitting and receiving signals of the B3 band and the WIFI signal.
  • the corresponding power amplification is performed by PA1 and PA2, and is transmitted or received when Duplexer1 and Duplexer2 are distinguished, and B3 is implemented in the first frequency divider DIP1 when the WIFI antenna 101 (ANT2) 101 receives the signal.
  • Duplexer2 is a kind of RF filter, which further increases the isolation of the B3 band signal and the WIFI signal while distinguishing between transmission and reception, thereby ensuring the output from the Duplexer2 to
  • the signal of RX B3 is the B3 signal.
  • Other more specific content can refer to the prior art.
  • the external WIFI signal received by the WIFI antenna 101 may be a 2.4 GW IFI signal or a 5.8 GW IFI signal
  • the identification circuit 102 recognizes that the external signal is a WIFI signal
  • the recognized WIFI signal is output to the corresponding WLAN.
  • the receiving port further divides the 2.4 GWIFI signal and the 5.8 GW IFI signal by the second frequency divider (DIP2) 104, and outputs the differentiated 2.4 GW IFI signal and the 5.8 GW IFI signal to respective WLAN receiving ports.
  • DIP2 second frequency divider
  • the WIFI antenna 101 is shared by the F3-LTE B3 band signal and the WIFI signal.
  • the four-worker does not increase the number of antennas, so that the B1 band signal and the B3 band signal can be transmitted to the corresponding receiving port on the total transceiver through different antennas, thereby realizing the FDD-LTE B1+ of China Telecom and China Unicom. B3 with a CA.
  • the B1+B3 inter-band CA of the FDD-LTE is implemented based on the technical solution disclosed in the embodiment of the present invention.
  • the other embodiment of the present invention further provides the inter-band CA of the B39+B41 that implements the TDD-LTE.
  • the reference figure is used. 3 shows another application scenario structure diagram, wherein an ASM (antenna switch module) is an antenna switch module, and a Dual SAW is a filter module.
  • ASM antenna switch module
  • the first antenna 100 can also be used to receive the external B39 frequency band signal and the external B41 frequency band signal, and output the external B39 frequency band signal to the B39 receiving port (RX B39) of the total transceiver and the external B41.
  • the band signal is output to the B41 receiving port (RX B41) of the total transceiver.
  • the transmit signal of the B41 of the TDD-LTE passes through the PA3 and the filter modules Dual SAW1 and ASM to reach the first antenna ANT1, and the transmit signal of the B39 (ie, the internal B39 band signal) passes through the PA4. And the filters Filter and ASM reach the first antenna ANT1.
  • the FDD-LTE B1 transmit signal ie, the internal B1 band signal
  • the B3 transmit signal ie, the internal B3 band signal
  • the present invention in order to improve the reliability of the received signal under the multipath fading channel transmission, the present invention adopts the diversity receiving technology, and the diversity receiving technology is considered to be obviously effective and economical. Anti-fading technology.
  • FIG. 4 another application scenario structure diagram is shown. Specifically, first, the first antenna 100 and the WIFI antenna 101 are specifically used as a main set antenna. Further, the system of the present invention further includes a diversity antenna 105.
  • PRX B1 is the B1 main set receiving port
  • PRX B3 is the B3 main set receiving port
  • PRX B39 is similar to PRX B41
  • DRX B1 is the B1 diversity receiving port
  • DRX B3 is the B3 diversity receiving port
  • DRX B39 is similar to DRX B41.
  • the first antenna 100 is mainly responsible for receiving the external B1 frequency band signal, the external B39 frequency band signal, and the external B41 frequency band signal in the main set; the WIFI antenna 101 is specifically used for receiving the external B3 frequency in the main set. Segment signal.
  • ANT1 can be responsible for GSM CDMA WCDMA TD-SCDMA frequency band and LTE partial CA frequency band including LTE B1, B39 and B41 power transmission and main set reception.
  • ANT2 is responsible for the transmission and reception of BT and WIFI frequencies (including 2.4G and 5.8G), as well as the power transmission and main set reception of the F3-LTE carrier aggregation band B3 band.
  • the diversity antenna 105 is specifically responsible for diversity reception of all frequency bands of LTE, that is, diversity receiving B1 frequency band signals, B3 frequency band signals, B39 frequency band signals, and B41 frequency band signals, and separately receiving the received B1 frequency band signals, B3 frequency band signals, B39 frequency band signals, and The B41 band signals are output to respective receiving ports in the total transceiver.
  • ANT1 implements transmission and reception of B1, B39, and B41 of LTE
  • ANT2 implements transmission and reception of B3 of LTE, so that the radio frequency signal link can satisfy the signal of simultaneously realizing two carrier aggregation bands into Transceiver. That is, carrier aggregation of FDD-LTE B1+B3 and carrier aggregation of TDD-LTE B39+B41 are implemented.
  • the B1 of the main channel receiving channel reaches the Transceiver PRX B1 port through the antennas ANT1, ASM and Duplexer1, and the B3 of the main channel receiving channel reaches the Transceiver PRX B3 interface through the antennas ANT2 and DIP1 and Duplexer2.
  • the main channel receiving link can ensure that the Transceiver receives the two FDD-LTE signals of B1 and B3 of the carrier aggregation at the same time, thereby realizing the B1+B3 inter-band carrier aggregation of FDD-LTE required by China Telecom and China Unicom.
  • the transmit signal of B41 of TDD-LTE reaches the antenna ANT1 through PA3 and Dual SAW1 and ASM, and the transmitted signal of B39 passes through PA4 and filter Filter and ASM to reach antenna ANT1.
  • the B41 of the main channel receiving channel reaches the Transceiver PRX B41 port through the antennas ANT1, ASM and Dual SAW1.
  • the B39 of the main channel receiving channel reaches the Transceiver PRX B39 port through the antennas ANT1, ASM and Dual SAW1.
  • the main channel receiving link can ensure that Transceiver receives two TDD-LTE signals of B39 and B41 at the same time, so that China Mobile requires FDD-LTE carrier aggregation of B39 and B41.
  • the diversity receiving path of FDD-LTE carrier aggregation shares one antenna ANT3, B3 and B1 of FDD-LTE pass through antenna ANT3, the RF switch Switch selects one RF channel, and then passes through the receiving filter module Dual SAW2 of B1 and B3, and then The Transceiver DRX B3 and B1 ports can be respectively reached at the same time to realize the diversity link connection of the FDD-LTE carrier aggregation CAT6.
  • the diversity receiving path of carrier aggregation of TDD-LTE shares one antenna ANT3, and B39 and B41 of TDD-LTE pass through antenna ANT3, then select one RF channel through switch Switch, and then pass through the receiving filter module Dual SAW3 of B39 and B41. Then, the Transceiver DRX B39 and B41 ports can be respectively reached at the same time to realize the diversity connection of the TDD-LTE carrier aggregation CAT6.
  • the present invention achieves a system architecture and simultaneously realizes the CA band requirements of China Mobile China Telecom China Unicom three operators in China, and is compatible with CA circuits and non-CA circuits.
  • the circuit is simple and unified, and flexible to meet a variety of applications.
  • the present invention implements TDD-LTE and FDD-LTE by adopting a scheme of carrier aggregation frequency planning combined with a radio frequency circuit, implementing different characteristics of carrier aggregation for TDD-LTE and FDD-LTE, and adopting different architectures and different circuits.
  • Carrier aggregation CAT6 the carrier aggregation RF circuit of this scheme, the circuit is simpler, the cost is lower, the link insertion loss is smaller, and the performance is better.
  • the present invention implements a carrier aggregation scheme with respect to the four-worker, and significantly reduces the transmission power of the mobile phone in the CA state, thereby reducing the power consumption of the mobile phone and prolonging the standby time.
  • the present invention does not increase the antenna that specifically implements the carrier aggregation function, so that the number of antennas is not increased, and no additional switch chip is added, which is advantageous for the implementation of the metal back-shell mobile phone and low cost.
  • Carrier aggregation scheme Compared with the multi-antenna carrier aggregation scheme, the present invention does not increase the antenna that specifically implements the carrier aggregation function, so that the number of antennas is not increased, and no additional switch chip is added, which is advantageous for the implementation of the metal back-shell mobile phone and low cost.
  • the present invention maintains the CA state and the non-CA state of the mobile phone, the PA transmission power is constant, and the linearity of the PA is better.
  • the frequency band includes various CAT6DL 2CA combinations, such as B3+B7 in Europe; B3+B20; B7+B20; B4+B2 in North America; B4+B17; B4+B12; etc.; B1+B26 in Japan; B1+B8, etc. Wait.
  • the carrier aggregation circuit implementation system provided by the embodiment of the present invention is further provided by the embodiment of the present invention.
  • a method for implementing a carrier aggregation circuit is provided. Referring to FIG. 5, the method may specifically include the following steps:
  • Step S500 The first antenna receives the external B1 frequency band signal, and outputs an external B1 frequency band signal to the processor 103.
  • the first antenna 100 can also receive the external B39 frequency band signal and the external B41 frequency band signal, and output the external B39 frequency band signal and the external B41 frequency band signal to the processor 103.
  • Step S501 The WIFI antenna receives an external signal including an external B3 band signal or an external WIFI signal, and outputs the external signal to the identification circuit.
  • Step S502 The identification circuit identifies whether the external signal is a B3 band signal, and if so, outputs the identified B3 band signal to the processor 103.
  • Step S503 The processor 103 acquires and utilizes the external B1 frequency band signal output by the first antenna and the identified B3 frequency band signal output by the identification circuit to implement B1+B3 inter-band CA of FDD-LTE.
  • FIG. 6 is a structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 6 may include: at least one processor 61, such as a CPU, at least one communication bus 62 and a memory 63; and a communication bus 62. Used to implement connection communication between these components; the memory 63 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • a set of program codes is stored in the memory 63, and the processor 61 is configured to call the program code stored in the memory 63 for performing the following operations:
  • the processor 61 further performs:
  • the first antenna and the WIFI antenna are both a main set antenna
  • the processor 61 also performs:
  • the B1 band signal, the B3 band signal, the B39 band signal, and the B41 band signal are received by diversity through a diversity antenna.
  • the processor 61 further performs:
  • the identification circuit When the identification circuit recognizes that the external signal is a WIFI signal, the identified WIFI signal is output to a corresponding WLAN receiving port.
  • the identification circuit is specifically a first frequency divider, and the processor 61 identifies, by the first frequency divider, whether the external signal is the B3 frequency band signal according to a frequency band range of the B3 frequency band signal.
  • processor 61 further performs:
  • the processor 61 further performs: transmitting an internal B1 frequency band signal by using the first antenna; and transmitting an internal B3 frequency band signal by using the WIFI antenna.

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Abstract

本发明公开了一种载波聚合电路实现方法、实现系统及移动终端，其中，载波聚合电路实现系统包括：第一天线，用于接收外界B1频段信号，并向处理器输出外界B1频段信号；WIFI天线，用于接收包括外界B3频段信号或外界WIFI信号的外界信号，并将外界信号输出至识别电路；识别电路，用于识别外界信号是否为B3频段信号，如果是，则向处理器输出识别出的B3频段信号；处理器，用于获取并利用外界B1频段信号和识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。本发明通过让B3频段信号和WIFI信号共存WIFI天线，在既不使用四工器也不增加天线数量的前提下，实现了FDD-LTE的B1+B3带间CA。

Description

一种载波聚合电路实现方法、实现系统及移动终端
本申请要求于2016年3月31日提交中国专利局，申请号为201610204395.6、发明名称为“一种载波聚合电路实现方法、实现系统及移动终端”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
本发明涉及载波聚合技术领域，特别是涉及一种载波聚合电路实现方法、实现系统及移动终端。
背景技术
当今，随着数据业务的爆炸式增长，为了满足用户使用新型业务时的用户感知需求，移动运营商正在积极部署使用载波聚合(Carrier Aggregation，简称CA)技术的4G+网络(又称4.5G网络)，以通过尽可能最大限度地使用手中的频谱资源来为用户提供尽可能高的数据传输速率，进而保证较好的用户体验。其中，CA技术将多个载波结合在一起，这样每个用户都能得到更多的资源，从而获得更高的数据传输速率和更好的用户体验。聚合的载波越多，用户就能获得更多的资源，进而获得更高的性能。
目前，几乎所有的LTE(Long Term Evolution)领先运营商都在积极部署载波聚合，比如中国移动、中国电信和中国联通。对于均属于FDD-LTE中国联通和中国电信而言，其主要利用四工器来实现下行同时接收B1和B3两种信号，进而实现B1+B3带间CA。而四工器成本高，插损大，需要PA(Power Amplifier，功率放大器)输出更高的功率来补偿四工器带来的额外插损，而且手机的发射功率越大，ACLR(相邻频道泄漏比)越容易恶化，需要的电流更多，功耗相应变得更大。其中，B1(Band1)、B3(Band3)为FDD-LTE频段。
为了不使用四工器，人们在现有技术的基础上增加额外的天线来为B1频段信号和B3频段信号提供不同的天线，然而，这种方案以增加天线数量为代价，并不是最佳的解决方法。尤其是在目前全金属背盖手机的数量越来越多的情况下，增加手机天线个数难度比较大，这是因为全金属背盖不可能像塑料背盖那样，可以堆叠很多天线来实现不同功能的应用。
发明内容
有鉴于此，本发明提供了一种载波聚合电路实现方法、实现系统及移动终端，以在既不使用四工器也不增加天线数量的前提下实现FDD-LTE的B1+B3带间CA。
为解决上述技术问题，本发明提供一种载波聚合电路实现系统，应用于移动终端，该系统包括：
第一天线，用于接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
WIFI天线，用于接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
所述识别电路，用于识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
所述处理器，用于获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
优选地，所述第一天线还用于接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
优选地，所述第一天线和所述WIFI天线具体均为主集天线；
所述第一天线具体用于主集接收所述外界B1频段信号、所述外界B39频段信号和所述外界B41频段信号；
所述WIFI天线具体用于主集接收所述外界B3频段信号；
所述系统还包括：
分集天线，用于分集接收所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号，并分别将分集接收到的所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号向所述处理器输出。
优选地，所述识别电路还用于当识别出所述外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口。
优选地，所述识别电路具体为第一分频器，所述第一分频器用于根据所述B3频段信号的频段范围识别所述外界信号是否为所述B3频段信号。
优选地，还包括：
设置于所述第一分频器与所述处理器之间的射频滤波器，用于滤除来自所述第一分频器的信号中除所述B3频段信号之外的信号，并向所述处理器输出滤除后的信号。
优选地，所述第一天线还用于发射内部B1频段信号；所述WIFI天线还用于发射内部B3频段信号。
本发明还提供了一种移动终端，包括处理器和存储器，其中，所述存储器中存储一组程序代码，且所述处理器用于调用所述存储器中存储的程序代码，用于执行以下操作：
通过第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
通过WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
通过所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
可选地，所述处理器还执行：
通过所述第一天线接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
可选地，所述第一天线和所述WIFI天线具体均为主集天线；
所述处理器还执行：
通过所述第一天线主集接收所述外界B1频段信号、所述外界B39频段信号和所述外界B41频段信号；
通过所述WIFI天线主集接收所述外界B3频段信号；
通过分集天线，分集接收所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号。
可选地，所述处理器还执行：
通过所述识别电路当识别出所述外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口。
进一步地，所述识别电路具体为第一分频器，所述处理器通过所述第一分频器根据所述B3频段信号的频段范围识别所述外界信号是否为所述B3频段信号。
更进一步地，所述处理器还执行：
通过设置于所述第一分频器与所述处理器之间的射频滤波器，滤除来自所述第一分频器的信号中除所述B3频段信号之外的信号，并向所述处理器输出滤除后的信号。
可选地，所述处理器还执行：通过所述第一天线发射内部B1频段信号；通过所述WIFI天线发射内部B3频段信号。
第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
所述处理器获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
优选地，该方法还包括：
所述第一天线接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
以上本发明提供的技术方案中，载波聚合电路实现系统包括第一天线、WIFI天线、识别电路以及处理器，具体地，第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；所述处理器获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
由于在实际应用中移动终端必定会有WIFI天线和另一收发非WIFI信号的天线，因此，本发明中，通过让FDD-LTE的B3频段信号和WIFI信号共存 WIFI天线，在既不使用四工器也不增加天线数量的前提下，使得B1频段信号和B3频段信号能够通过不同天线传送到总收发器上相应的接收端口，进而实现了中国电信和中国联通的FDD-LTE的B1+B3带间CA。
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，还可以根据提供的附图获得其他的附图。
图1为本发明实施例提供的一种载波聚合电路实现系统的结构框图示意图；
图2为本发明实施例提供的一种应用场景结构框图；
图3为本发明实施例提供的另一种应用场景结构图；
图4为本发明实施例提供的再一种应用场景结构图；
图5为本发明实施例提供的一种载波聚合电路实现方法的流程图；
图6为本发明实施例提供的一种移动终端的结构图。
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。
本发明的核心是提供一种载波聚合电路实现方法、实现系统及移动终端，以在既不使用四工器也不增加天线数量的前提下实现FDD-LTE的B1+B3带间CA。
在实际应用中，为了满足数据业务的爆炸式增长及用户使用新型业务时的用户感知需求，移动宽带网络需要不断演进。载波聚合更宽的带宽是提升吞吐量的最有效方法。运营商大力发展载波聚合技术提高网络传输速度，目前支持LTE的CAT4下载速率为150Mbps，而载波聚合2*20MHZ的CAT6可以使得 下载速率最高可以达到300Mbps。
对上述TDD-LTE和FDD-LTE的载波聚合频率选择和天线通道的规划分析：中国移动的CA要求支持Band39、Band40、Band41频段内连续2载波聚合和支持Band39和Band41频段间2载波聚合；中国电信和中国联通的CA要求终端应必选支持Band1+Band3带间CA和B3带内连续2载波聚合。另外，WIFI双频的2.4G和5.8G频率和带宽。其中，Band39简称B39，其它同理。详见下表：
Figure PCTCN2016080604-appb-000001
对上表中的载波聚合频率和WIFI频率分析，可以发现FDD-LTE BAND3(简称B3)的上行链路1710MHz-1785MHz和下行1805MHz-1880MHz频率属于中间频段频率，而WIFI的频段为2402MHz-2482MHz和5725MHz-5850MHz，属于高频频段频率。
通过对射频频率和带宽的分析发现，FDD-LTE的B3同WIFI的2.4G和5.8G的频率间隔有(2402-1880)522MHZ，这样可以通过射频器件分频器，实现FDD-LTE的B3频段和WIFI的2.4G和5.8G频段的物理分离，进一步地，还可以通过射频滤波器进一步增加隔离度，从而实现FDD-LTE的B3和WIFI的共存。同时，B1同B3和WIFI是不同天线连接，这样可以同时实现B1和B3的通过不同天线通过到transceiver(总收发器)的端口，实现中国电信和中国联通的FDD-LTE的B1+B3带间CA。
同时，对于中国移动载波聚合TDD-LTE的B39+B41带间CA频率，TDD的Band39的上下行频率链路1880MHz-1920MHz，TDD的Band41的上下行频率链路2496MHz-2690MHz，这两个频率间隔比较大，采用B39和B41的滤波器模组Dual SAW，可以将同一个天线接收到的LTE B39和B41进行信号分离，这样TDD-LTE B39和B41的通过滤波器模组Dual SAW，分别到达不同射频通道，同时到达Transceiver的不同端口,从而实现中国移动载波聚合TDD-LTE的B39+B41带间CA。
为了使本技术领域的人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。
参考图1，图1示出了本发明实施例提供的一种载波聚合电路实现系统的结构框图示意图，该系统应用于移动终端，其具体可以包括第一天线100、WIFI天线101、识别电路102以及处理器103，其中：
第一天线用于接收外界B1频段信号，并向处理器103输出外界B1频段信号；WIFI天线用于接收包括外界B3频段信号或外界WIFI信号的外界信号，并将外界信号输出至识别电路；识别电路，用于识别外界信号是否为B3频段信号，如果是，则向处理器103输出识别出的B3频段信号；处理器103，用于获取并利用第一天线输出的外界B1频段信号和识别电路输出的识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
在具体实施过程中，处理器103可以通过总收发器Transceiver来获取各天线接收到的信号或者通过Transceiver将要发射的信号传输至各天线。总收发器具有接收和发送各信号的接收端口和发送端口。本发明的重点在于将外界B1频段信号和外界B3频段信号等信号传送至处理器103的过程，对于处理器103实现FDD-LTE的B1+B3带间CA等处理过程可以参考现有技术，本发明在此不做阐述。基于此，本发明以下内容主要描述各信号传输至总收发器相应端口的过程。
具体地，第一天线100在接收到来自网络侧的外界B1频段信号时，将外界B1频段信号输出至Transceiver的B1接收端口(RX B1)，由Transceiver将外界B1频段信号转发至处理器103，其它信号类似。
WIFI天线101接收包括外界B3频段信号或外界WIFI信号的外界信号，并将接收到的外界信号输出至识别电路。其实，从信号频段适用角度来考虑，由于蓝牙信号频段为2400-2483.5MHz，实际应用中通常是蓝牙和WIFI共享一个天线，因此，这里的WIFI天线101并不是严格意义上的WIFI信号的天线，而是能够工作在2.4G WIFI频段内的天线。换句话说，WIFI天线101能够接收的外界信号，除了外界B3频段信号、外界WIFI信号，还可以是蓝牙信号等2.4G WIFI频段内的信号。
识别电路102接收到WIFI天线101传输过来的外界信号，并识别该外界信号是否为B3频段信号，如果是，则将识别出的B3频段信号输出至总收发 器的B3接收端口(RX B3)。当然，可以理解的是，当识别出外界信号是WIFI信号时，识别电路102将识别出的WIFI信号输出至相应的WLAN接收端口。
进一步地，本发明系统还可以包括设置于识别电路102与处理器103之间的射频滤波器，用于滤除来自识别电路102的信号中除B3频段信号之外的信号，并向处理器103输出滤除后的信号。
本发明中，所有由第一天线100和WIFI天线101接收的信号，包括外界B1频段信号、外界B3频段信号和外界WIFI信号，均会传输至Transceiver相应的接收端口，然后由Transceiver接手后续的处理过程，进而实现B1+B3的带间聚合，这个处理和实现过程可以参考现有技术，本发明在此不做详细阐述。本文其它信号类似。
本发明中，从实际应用的角度出发，第一天线100还可以用于发射来自B1发送端口(TX B1)的内部B1频段信号；WIFI天线101还可以用于发射来自B3发送端口(TX B3)的内部B3频段信号。
具体地，同样参考图2示出的一种应用场景结构框图，其中，PA(Power Amplifier)：功率放大器，BT：Bluetooth，DUP(Duplexer)：双工器，DIP(Diplexer)：分频器。识别电路102具体可以为第一分频器(DIP1)，第一分频器DIP1根据B3频段信号的频段范围识别外界信号是否为B3频段信号。
第一天线(ANT1)100负责B1频段信号的收发，WIFI天线101(ANT2)101负责B3频段信号和WIFI信号的收发。在信号发射时，由PA1和PA2来进行相应的功率放大，由Duplexer1和Duplexer2来区分时发送还是接收，同时，在WIFI天线101(ANT2)101接收信号时，在第一分频器DIP1实现B3频段信号与WIFI信号的物理分离的基础上，Duplexer2作为射频滤波器的一种，其在区分发送还是接收的同时进一步增加了B3频段信号和WIFI信号的隔离度，以此保证了从Duplexer2输出至RX B3的信号即为B3信号。其它更具体内容可以参考现有技术。
另外，由于WIFI天线101接收到的外界WIFI信号可以是2.4GWIFI信号也可能是5.8GWIFI信号，因此，当识别电路102识别出外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口，进一步地，由第二分频器(DIP2)104区分2.4GWIFI信号和5.8GWIFI信号，并将区分出的2.4GWIFI信号和5.8GWIFI信号输出至各自相应的WLAN接收端口。
由于现实生活中的移动终端必定会有WIFI天线101和另一收发非WIFI信号的天线，因此，本发明中，通过让FDD-LTE的B3频段信号和WIFI信号共享WIFI天线101，在既不使用四工器也不增加天线数量的前提下，使得B1频段信号和B3频段信号能够通过不同天线传送到总收发器上相应的接收端口，进而实现了中国电信和中国联通的FDD-LTE的B1+B3带间CA。
基于上述本发明实施例所公开的技术方案实现了FDD-LTE的B1+B3带间CA，本发明另一实施例进一步提供实现TDD-LTE的B39+B41的带间CA，具体地，参考图3示出的另一种应用场景结构图，其中，ASM(antenna switch module)为天线开关模组，Dual SAW为滤波器模组。
在上述实施例的基础上，第一天线100还可以用于接收外界B39频段信号和外界B41频段信号，并将外界B39频段信号输出至总收发器的B39接收端口(RX B39)及将外界B41频段信号输出至总收发器的B41接收端口(RX B41)。
在实际应用中，TDD-LTE的B41的发射信号(即内部B41频段信号)经过PA3和滤波器模组Dual SAW1及ASM到达第一天线ANT1，B39的发射信号(即内部B39频段信号)通过PA4和滤波器Filter及ASM到达第一天线ANT1。同时，FDD-LTE的B1的发射信号(即内部B1频段信号)经过PA1和Duplexer1及ASM到达第一天线ANT1，B3的发射信号(即内部B3频段信号)通过PA2和Duplexer2及DIP1到达WIFI天线ANT2。
基于上述各实施例公开的技术方案，在本发明再一实施例中，为了提高多径衰落信道传输下接收信号的可靠性，本发明采用分集接收技术，分集接收技术被认为是明显有效而且经济的抗衰落技术。参考图4示出的再一种应用场景结构图，具体地，首先，将第一天线100和WIFI天线101具体均作为主集天线，再者，本发明系统还包括分集天线105。其中，PRX B1为B1主集接收端口，PRX B3为B3主集接收端口，PRX B39和PRX B41类似；DRX B1为B1分集接收端口，DRX B3为B3分集接收端口，DRX B39和DRX B41类似。
具体地，第一天线100具体主要负责主集接收外界B1频段信号、外界B39频段信号和外界B41频段信号；WIFI天线101具体用于主集接收外界B3频 段信号。在具体实施过程中，ANT1可以负责GSM CDMA WCDMA TD-SCDMA频段和LTE部分CA频段包含LTE B1、B39和B41的功率发射和主集接收。ANT2负责BT和WIFI频率(包括2.4G和5.8G)的发射和接收，以及FDD-LTE的载波聚合频段B3频段的功率发射和主集接收。
分集天线105专门负责LTE所有频段的分集接收，即分集接收B1频段信号、B3频段信号、B39频段信号和B41频段信号，并分别将分集接收到的B1频段信号、B3频段信号、B39频段信号和B41频段信号输出至总收发器中各自相应的接收端口。在射频链路方面，ANT1实现对LTE的B1、B39和B41的发射和接收，ANT2实现对LTE的B3的发射和接收，这样射频信号链路可以满足同时实现两个载波聚合频段的信号进入Transceiver，即实现FDD-LTE B1+B3的载波聚合和TDD-LTE B39+B41的载波聚合。
以下从三个方面针对图4所示的结构图进行详细说明：
(1)针对FDD-LTE的B1和B3的载波聚合CAT6的实现(中国电信和中国联通的要求B3和B1的FDD-LTE载波聚合)
从图4可以看出FDD-LTE的B1的发射信号经过PA1和Duplexer1及ASM到达天线ANT1，B3的发射信号通过PA2和Duplexer2及DIP1到达天线ANT2；
主路接收通道的B1通过天线ANT1、ASM和Duplexer1到达Transceiver PRX B1端口，同时主路接收通道的B3通过天线ANT2和DIP1以及Duplexer2到达Transceiver PRX B3接口。主路接收链路可保证Transceiver同时接收到载波聚合的B1和B3的两路FDD-LTE信号，从而实现中国电信和中国联通的要求FDD-LTE的B1+B3带间载波聚合。
(2)针对TDD-LTE的B39和B41的载波聚合CAT6的实现(中国移动要求B39和B41的FDD-LTE的载波聚合)
TDD-LTE的B41的发射信号经过PA3和Dual SAW1及ASM到达天线ANT1，B39的发射信号通过PA4和滤波器Filter及ASM，到达天线ANT1。
主路接收通道的B41通过天线ANT1、ASM和Dual SAW1到达Transceiver PRX B41端口。主路接收通道的B39通过天线ANT1、ASM和Dual SAW1到达Transceiver PRX B39端口。主路接收链路可保证Transceiver同时接收到B39和B41的两路TDD-LTE信号，从而实现中国移动要求B39和B41的FDD-LTE的载波聚合。
(3)分集接收路实现B1+B3和B39+B41的载波聚合CAT6的实现
FDD-LTE的载波聚合的分集接收路共用一个天线ANT3，FDD-LTE的B3和B1经过天线ANT3，射频开关Switch选择一个射频通道，然后再经过B1和B3的接收滤波器模组Dual SAW2，然后可以同时分别到达Transceiver DRX B3和B1口，实现FDD-LTE载波聚合CAT6的分集链路连接。
TDD-LTE的载波聚合的分集接收路共用一个天线ANT3，TDD-LTE的B39和B41经过天线ANT3，再经过开关Switch选择一个射频通道，然后再经过B39和B41的接收滤波器模组Dual SAW3，然后可以同时分别到达Transceiver DRX B39和B41口，实现TDD-LTE载波聚合CAT6的分集连接。
可见，本发明有以下有益效果：
(1)本发明做到一种系统架构同时实现中国区中国移动中国电信中国联通三家运营商CA频段要求，同时兼容CA电路和非CA电路。电路简单统一，灵活满足多种应用。
(2)本发明通过载波聚合频率规划结合射频电路的方案，针对TDD-LTE和FDD-LTE实现载波聚合的各自不同特点，采用不同架构和不同电路的方法，分别实现TDD-LTE和FDD-LTE的载波聚合CAT6，本方案的载波聚合射频电路，电路更简单，成本更低，链路插损更小，性能更优。
(3)本发明相对于四工器实现载波聚合方案，明显降低CA状态下手机发射功率，从而降低手机功耗，延长待机时间。
(4)本发明相对于多天线载波聚合方案，本方案不增加专门实现载波聚合功能的天线，使得天线数没有增加，并且不增加额外开关芯片，有利于金属后壳手机实现，并且实现低成本的载波聚合方案。
(5)本发明保持手机CA状态和非CA状态，PA发射功率不变，而且PA的线性更好。
需要特别说明的是，本发明不仅仅可以中国区CA方案，对海外欧洲北美日本都可以支持适用。频段包括各种CAT6DL 2CA组合，如欧洲的B3+B7；B3+B20；B7+B20；北美的B4+B2；B4+B17；B4+B12；等等；日本的B1+B26；B1+B8等等。
基于上述本发明实施例提供的载波聚合电路实现系统，本发明实施例还提 供了一种载波聚合电路实现方法，参考图5，该方法具体可以包括如下步骤：
步骤S500、第一天线接收外界B1频段信号，并向处理器103输出外界B1频段信号。
另外，本发明方法中，第一天线100还可以接收外界B39频段信号和外界B41频段信号，并向处理器103输出外界B39频段信号和外界B41频段信号。
步骤S501、WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将外界信号输出至识别电路。
步骤S502、识别电路识别外界信号是否为B3频段信号，如果是，则向处理器103输出识别出的B3频段信号。
步骤S503、处理器103获取并利用第一天线输出的外界B1频段信号和识别电路输出的识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
图6为本发明实施例提供的一种移动终端的结构图，如图所示，该移动终端6可以包括：至少一个处理器61，例如CPU，至少一个通信总线62以及存储器63；通信总线62用于实现这些组件之间的连接通信；存储器63可以是高速RAM存储器，也可以是非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器63中存储一组程序代码，且处理器61用于调用存储器63中存储的程序代码，用于执行以下操作：
通过第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
通过WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
通过所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
可选地，所述处理器61还执行：
通过所述第一天线接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
可选地，所述第一天线和所述WIFI天线具体均为主集天线；
所述处理器61还执行：
通过所述第一天线主集接收所述外界B1频段信号、所述外界B39频段信号和所述外界B41频段信号；
通过所述WIFI天线主集接收所述外界B3频段信号；
通过分集天线，分集接收所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号。
可选地，所述处理器61还执行：
通过所述识别电路当识别出所述外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口。
进一步地，所述识别电路具体为第一分频器，所述处理器61通过所述第一分频器根据所述B3频段信号的频段范围识别所述外界信号是否为所述B3频段信号。
更进一步地，所述处理器61还执行：
通过设置于所述第一分频器与所述处理器之间的射频滤波器，滤除来自所述第一分频器的信号中除所述B3频段信号之外的信号，并向所述处理器输出滤除后的信号。
可选地，所述处理器61还执行：通过所述第一天线发射内部B1频段信号；通过所述WIFI天线发射内部B3频段信号。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于方法和移动终端的实施例而言，由于其与系统实施例基本相似，所以描述得比较简单，相关之处参见方法实施例的部分说明即可。
以上对本发明所提供的一种载波聚合电路实现方法、实现系统及移动终端进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (16)

  1. 一种载波聚合电路实现系统，其特征在于，应用于移动终端，该系统包括：
    第一天线，用于接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
    WIFI天线，用于接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
    所述识别电路，用于识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
    所述处理器，用于获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
  2. 如权利要求1所述的系统，其特征在于，所述第一天线还用于接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
  3. 如权利要求2所述的系统，其特征在于，所述第一天线和所述WIFI天线具体均为主集天线；
    所述第一天线具体用于主集接收所述外界B1频段信号、所述外界B39频段信号和所述外界B41频段信号；
    所述WIFI天线具体用于主集接收所述外界B3频段信号；
    所述系统还包括：
    分集天线，用于分集接收所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号，并分别将分集接收到的所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号向所述处理器输出。
  4. 如权利要求1至3任意一项所述的系统，其特征在于，所述识别电路还用于当识别出所述外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口。
  5. 如权利要求4所述的系统，其特征在于，所述识别电路具体为第一分频器，所述第一分频器用于根据所述B3频段信号的频段范围识别所述外界信 号是否为所述B3频段信号。
  6. 如权利要求5所述的系统，其特征在于，还包括：
    设置于所述第一分频器与所述处理器之间的射频滤波器，用于滤除来自所述第一分频器的信号中除所述B3频段信号之外的信号，并向所述处理器输出滤除后的信号。
  7. 如权利要求4所述的系统，其特征在于，所述第一天线还用于发射内部B1频段信号；所述WIFI天线还用于发射内部B3频段信号。
  8. 一种移动终端，包括载波聚合电路实现系统，其特征在于，所述移动终端包括处理器和存储器，其中，所述存储器中存储一组程序代码，且所述处理器用于调用所述存储器中存储的程序代码，用于执行以下操作：
    通过第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
    通过WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
    通过所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
    获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
  9. 如权利要求8所述的移动终端，其特征在于，所述处理器还执行：
    通过所述第一天线接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
  10. 如权利要求9所述的移动终端，其特征在于，所述第一天线和所述WIFI天线具体均为主集天线；
    所述处理器还执行：
    通过所述第一天线主集接收所述外界B1频段信号、所述外界B39频段信号和所述外界B41频段信号；
    通过所述WIFI天线主集接收所述外界B3频段信号；
    通过分集天线，分集接收所述B1频段信号、所述B3频段信号、所述B39频段信号和所述B41频段信号。
  11. 如权利要求8至10任意一项所述的移动终端，其特征在于，所述处 理器还执行：
    通过所述识别电路当识别出所述外界信号是WIFI信号时，将识别出的WIFI信号输出至相应的WLAN接收端口。
  12. 如权利要求11所述的移动终端，其特征在于，所述识别电路具体为第一分频器，所述处理器通过所述第一分频器根据所述B3频段信号的频段范围识别所述外界信号是否为所述B3频段信号。
  13. 如权利要求12所述的移动终端，其特征在于，所述处理器还执行：
    通过设置于所述第一分频器与所述处理器之间的射频滤波器，滤除来自所述第一分频器的信号中除所述B3频段信号之外的信号，并向所述处理器输出滤除后的信号。
  14. 如权利要求11所述的移动终端，其特征在于，所述处理器还执行：通过所述第一天线发射内部B1频段信号；通过所述WIFI天线发射内部B3频段信号。
  15. 一种载波聚合电路实现方法，其特征在于，包括：
    第一天线接收外界B1频段信号，并向处理器输出所述外界B1频段信号；
    WIFI天线接收包括外界B3频段信号或外界WIFI信号的外界信号，并将所述外界信号输出至识别电路；
    所述识别电路识别所述外界信号是否为B3频段信号，如果是，则向所述处理器输出识别出的B3频段信号；
    所述处理器获取并利用所述第一天线输出的所述外界B1频段信号和所述识别电路输出的所述识别出的B3频段信号，实现FDD-LTE的B1+B3带间CA。
  16. 如权利要求15所述的方法，其特征在于，还包括：
    所述第一天线接收外界B39频段信号和外界B41频段信号，并向所述处理器输出所述外界B39频段信号和所述外界B41频段信号。
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