CN110324061B - Device and method for realizing separated self-adaptive carrier aggregation - Google Patents
Device and method for realizing separated self-adaptive carrier aggregation Download PDFInfo
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- CN110324061B CN110324061B CN201910543021.0A CN201910543021A CN110324061B CN 110324061 B CN110324061 B CN 110324061B CN 201910543021 A CN201910543021 A CN 201910543021A CN 110324061 B CN110324061 B CN 110324061B
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/18—Selecting a network or a communication service
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Abstract
The invention discloses a device and a method for realizing separated self-adaptive carrier aggregation, which comprises a main antenna unit, wherein the main antenna unit comprises a first antenna, a second antenna and a first integrated radio frequency transceiver, the second antenna is connected with a Band7 duplexer through a first single-pole four-throw switch, and the first antenna is separated into two paths of signals of low frequency and medium frequency through a first frequency divider; the low-frequency end of the first frequency divider is connected with a second single-pole five-throw switch, the medium-frequency end of the first frequency divider is connected with a first single-pole five-throw switch, the first single-pole five-throw switch is connected with a quadruplex, the second single-pole five-throw switch is connected with a Band20 duplexer, the quadruplex, the Band7 duplexer and the Band20 duplexer are connected with a linear power amplifier and a first integrated radio frequency transceiver, and the second single-pole five-throw switch and the first single-pole five-throw switch are connected with a non-linear power amplifier and the first integrated radio frequency transceiver. The invention realizes the network self-adaptive selection of the hardware circuit registration network.
Description
Technical Field
The invention relates to the technical field of carrier aggregation, in particular to a device and a method for realizing separated self-adaptive carrier aggregation.
Background
With the rapid progress of mobile communication from 2G, 3G, 4G to 5G, the demand for communication rates has increased endlessly, and has progressed from several tens of kbps to 1Gbps and even higher. The frequency bandwidth required by shannon formula is more and more calculated, but considering the frequency distribution of each country, the frequency resources which can be allocated to each operator are very limited, so the carrier aggregation technology comes up.
The shannon formula is expressed as follows:
C=W Log2 (1+S/N)
where C is the transmission speed, W is the channel bandwidth, and S/N is the signal-to-noise ratio of the signal transmitted in the channel.
Carrier Aggregation (CA) refers to a frequency band bandwidth conforming to LTE-a related technical specifications, such as 10M \20M \100MHz, formed by an LTE-a system using Aggregation of 2 or more Carrier units. In the existing network system (LTE), the maximum bandwidth of a single carrier is limited to 20MHz in the level of 4 (i.e., Cat4) of the supportable transmission rate, so that the maximum download speed in the cell User Experience (UE) is also limited to 150 Mbps. For dual carrier aggregation (2 CA), the maximum supportable bandwidth is 20MHz +20MHz, and the maximum theoretical speed (Downlink) is 300 Mbps.
In addition, according to the frequency spectrums of the two carriers, the carrier aggregation can be further divided into Intra-band carrier aggregation (Intra-band CA) and Inter-band carrier aggregation (Inter-band CA). The intra-band carrier aggregation specifically means that two subcarriers are distributed in the same frequency band, and may be divided into continuous (coherent) and non-continuous (non-coherent) according to the positions of the two subcarriers. Continuous intra-band carrier aggregation (intra-band connectivity) means that two subcarriers are close together, non-continuous intra-band carrier aggregation (intra-band connectivity) means that a certain frequency interval exists between the two subcarriers, and inter-band carrier aggregation means that the two subcarriers are distributed in different frequency bands, which is specifically shown in fig. 1.
The frequency spectrums adopted by different operators are different, which finally results in completely different carrier aggregation implementation modes, and the design requirements of the corresponding radio frequency front ends are also very different. Meanwhile, with the development of communication technologies, in order to fully apply spectrum resources, carrier aggregation is increasingly applied in the current LTE, 5G and future possible communication technologies. The current carrier aggregation basically acquires signals through a single antenna, but considering that the actual performance of the single antenna is difficult to guarantee, and the current carrier aggregation device cannot meet the acquisition requirements of different frequency bands with multiple specifications, the self-adaptive effect of the carrier aggregation is poor, and the requirements of different operators cannot be met, so that improvement is needed.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a device and a method for realizing the separated self-adaptive carrier aggregation, which have good self-adaptive effect and high stability and can meet the frequency band division requirements of the conventional operators at present.
In order to achieve the above object, the present invention employs a separate adaptive carrier aggregation implementation apparatus, which includes a main antenna unit, the main antenna unit includes a first antenna capable of obtaining different frequency band signal ranges, a second antenna, and a first integrated rf transceiver for multi-mode and multi-frequency, wherein,
the first antenna is used for receiving and transmitting radio frequency signals in a medium-low frequency range;
the second antenna is used for receiving and transmitting radio frequency signals in a high-frequency band range;
the second antenna is connected with a Band7 duplexer through a first single-pole four-throw switch, so that the process of transmitting uplink and downlink transmissions of a Band7 frequency Band on different frequencies is realized;
the first antenna is separated into two paths of signals of low frequency and medium frequency by a first frequency divider;
the low-frequency end divided by the first frequency divider is connected with a second single-pole five-throw switch, the medium-frequency end divided by the first frequency divider is connected with a first single-pole five-throw switch, the first single-pole five-throw switch is connected with a quadruplex used for receiving Band1 and Band3, the second single-pole five-throw switch is connected with a duplexer used for receiving a Band20, and the process that the transmission of an uplink and a downlink of a Band20 frequency Band is transmitted on different frequencies is realized;
the four-multiplexer, the Band7 duplexer and the Band20 duplexer are connected to a linear power amplifier, a first integrated radio frequency transceiver is connected with an input end of the linear power amplifier and used for selecting and switching according to a received frequency Band to realize the carrier aggregation of B1+ B3 and the transceiving process of the carrier aggregation of signals of a B20 frequency Band and a B7 frequency Band, a second single-pole five-throw switch and a first single-pole five-throw switch are further connected with a nonlinear power amplifier, the first integrated radio frequency transceiver is connected with the input end of the nonlinear power amplifier to realize the transmitting process of a GSM system, and the GSM receiving is the process of radiating through a first antenna of a corresponding frequency Band after being obtained from the first integrated radio frequency transceiver and amplified to 30 or 33dBm through the nonlinear power amplifier.
Further, in order to improve the aggregation effect and the aggregation adaptation range, the separate adaptive carrier aggregation implementation apparatus further includes a diversity antenna unit including a third antenna and a second integrated radio frequency transceiver, wherein,
the third antenna is used for receiving all radio frequency signals of high, medium and low frequencies;
the third antenna is connected with the second frequency divider through a second single-pole four-throw switch and is separated into two paths of signals of low frequency and medium and high frequency; meanwhile, signals at two ends are respectively connected with a B20 receiving filter and three receiving filters of Band1, Band3 and Band7, and the three receiving filters and the B20 receiving filter are both connected with a second integrated radio frequency transceiver, so that the receiving processes of selecting and switching according to the received frequency Band, and realizing carrier aggregation of B1+ B3+ B7 and carrier aggregation of a B20 frequency Band are realized.
Further, the frequency range of the medium and low frequency bands in the first antenna is 699-2170MHZ, and the frequency range of the high frequency band in the second antenna is 2300-2690 MHZ.
Further, the low frequencies in the first frequency divider are in the range of 1710MHz-2170MHz and 699MHz-960 MHz.
Further, the high and low frequencies of the second frequency divider are 1710-.
Further, the separate adaptive carrier aggregation implementation device can support the carrier aggregation process of 2CC, 3CC and 4CC related forms of Band1, Band3, Band7 and Band20 frequency bands.
The invention also discloses a method for realizing the separated self-adaptive carrier aggregation, which specifically comprises the following steps:
1) a network priority list is created in advance in a terminal and stored, and the priority order of the priority list is as follows: RPLMN networks, EPLMN/EHPLMN networks, HPLMN networks, UPLMN networks, OPLMN networks, VPLMN networks, and other PLMN networks;
2) entering a starting mode, and judging whether an RPLMN network exists or not; if yes, skipping to the step 3; if not, jumping to the step 9;
3) selecting a registered PLMN network and proceeding to step 4;
4) registering the PLMN network, and entering the step 5 after the registration is successful; otherwise, entering step 9;
5) indicating the selected PLMN network and proceeding to step 6;
6) the network is connected online, then a path is selected according to the requirement, if the received network is not permitted by the base station, the step 9 is entered; if the user reselects the network, entering step 7, and if the VPLMN network expires at the moment, entering step 8; if the network is disconnected or changed, go to step 13;
7) updating the selected network to a temporary repository of the priority list in real time; and entering step 9;
8) searching for a network with a higher priority than the VPLMN level; background searching and judging are carried out, and if a network with a priority higher than the level of the VPLMN is found at the moment, the step 9 is entered; if no network with higher priority than the VPLMN level is found, returning to the step 5;
9) the priority order in the list attempts to register with the PLMN network, with the first priority network in the priority list being selected and registered. If the registration is successful, returning to the step 5; if the registration fails, entering step 10;
10) judging whether a PLMN network exists in the priority list at the moment; if yes, entering step 11; if not, go to step 12;
11) selecting the next priority network after the registration failure in the priority list, and then entering the step 9;
12) searching whether other effective PLMN networks exist or not, if not, selecting the EPLMN network or the EHPLMN network when the RPLMN network does not exist, then entering a step 14, if so, selecting the effective first priority network in the priority list, and entering a step 5;
13) judging whether a valid and effective PLMN network still exists, if so, entering step 9; if not, entering step 14;
14) waiting for the network to be displayed; if the registered PLMN network is legal and effective, the network is connected online, and then step 5 is entered; if the PLMN network displayed and registered at the moment is different from the RPLMN network, selecting a first priority network in the priority list;
in the whole self-adaptive network registration process, the PLMN comprises all used frequencies of the network and the carrier aggregation form; meanwhile, in the network registration process, the terminal and the network have a mutual handshake protocol interaction process, and only the frequency band and carrier aggregation form supported by both the network and the terminal can be adopted in the actual communication process.
The device and the method for realizing the separated self-adaptive carrier aggregation have the following advantages that:
1. the wave aggregation network with various combination forms can be compatible, and great convenience is provided for design work;
2. partial integration is adopted, so that the performance of the system is ensured to a certain extent;
3. meanwhile, the network can realize the self-adaptive effect.
Drawings
Fig. 1 is a schematic structural connection diagram of a main antenna unit in a separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 2 is a schematic structural connection diagram of a diversity antenna unit in the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 3 is a schematic diagram illustrating the directions of main set antenna units in the transmission process of B1+ B3 by the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 4 is a schematic diagram illustrating the directions of diversity antenna units in the transmission process of B1+ B3 by the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 5 is a schematic diagram illustrating the directions of main set antenna units in the transmission process of B3+ B7 by the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 6 is a schematic diagram illustrating the directions of diversity antenna units in the transmission process of B3+ B7 by the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 7 is a schematic diagram illustrating the directions of main antenna units in a separate adaptive carrier aggregation implementation apparatus in the present embodiment 1 during transmission of B1+ B3+ B7+ B20;
fig. 8 is a schematic diagram illustrating the directions of diversity antenna units in the transmission process of B1+ B3+ B7+ B20 by the separate adaptive carrier aggregation implementation apparatus in this embodiment 1;
fig. 9 is a schematic flow chart of the upper half of a method for implementing the separated adaptive carrier aggregation in this embodiment 1;
fig. 10 is a schematic flow diagram of a lower half of the separated adaptive carrier aggregation implementation method in this embodiment 1.
In the figure: the antenna comprises a first integrated radio frequency transceiver 1, a linear power amplifier 2, a Band20 duplexer 3, a quadplexer 4, a Band7 duplexer 5, a nonlinear power amplifier 6, a first frequency divider 7, a first single-pole four-throw switch 8, a first single-pole five-throw switch 9, a second single-pole five-throw switch 10, a second antenna 11, a first antenna 12, a third antenna 13, a second single-pole four-throw switch 14, a second frequency divider 15, a B20 receiving filter 16, a third receiving filter 17, a second integrated radio frequency transceiver 18, a main antenna unit 19 and a diversity antenna unit 20.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1:
as shown in fig. 1-2, the apparatus for implementing separate adaptive carrier aggregation according to this embodiment includes a main antenna unit 19, where the main antenna unit 19 includes a first antenna 12 and a second antenna 11 that are pre-selected to be able to acquire signal ranges of different frequency bands, and a first integrated radio frequency transceiver 1 with multiple modes and multiple frequencies, where,
the first antenna 12 is configured to receive and transmit radio frequency signals in a medium-low frequency range;
the second antenna 11 is used for transceiving radio frequency signals in a high frequency band range;
the second antenna 11 is connected with the Band7 duplexer 5 through the first single-pole four-throw switch 8, so that the process of transmitting uplink and downlink transmissions of a Band7 frequency Band on different frequencies is realized;
the first antenna 12 is separated into two paths of signals of low frequency and medium frequency by a first frequency divider 7;
the low-frequency end divided by the first frequency divider 7 is connected with a second single-pole five-throw switch 10, the intermediate-frequency end divided by the first frequency divider 7 is connected with a first single-pole five-throw switch 9, the first single-pole five-throw switch 9 is connected with a quadruplex 4 which is used for receiving Band1 and Band3 and works simultaneously, the second single-pole five-throw switch 10 is connected with a duplexer 3 which is used for receiving a Band20 frequency Band, and the process that the transmission of an uplink and a downlink of the Band20 frequency Band are transmitted on different frequencies respectively is realized;
the TX ends of the quadruplex device 4, the Band7 duplexer 5 and the Band20 duplexer 3 are all connected to the linear power amplifier 2, the first integrated rf transceiver 1 is connected to the input end of the linear power amplifier 2 and is used for selecting and switching according to a received frequency Band to realize the transceiving process of carrier aggregation of B1+ B3 and carrier aggregation of signals of a B20 frequency Band and a B7 frequency Band, the second single-pole five-throw switch 10 and the first single-pole five-throw switch 9 are also connected to the nonlinear power amplifier 6, the first integrated rf transceiver 1 is connected to the input end of the nonlinear power amplifier 6 to realize the transmitting process of a GSM system, and GSM receiving is a process of acquiring from the first integrated rf transceiver 1, amplifying to 30 or 33dBm through the nonlinear power amplifier 6, and then radiating through the first antenna 12 of a corresponding frequency Band.
Further, in order to improve the aggregation effect and the aggregation adaptation range, the separate adaptive carrier aggregation implementation apparatus further includes a diversity antenna unit 20, where the diversity antenna unit 20 includes a third antenna 13 and a second integrated radio frequency transceiver 18, and wherein,
the third antenna 13 is used for receiving all radio frequency signals with high, medium and low frequencies;
the third antenna 13 is connected with a second frequency divider 15 through a second single-pole four-throw switch 14 and is separated into two paths of signals of low frequency and medium and high frequency; meanwhile, signals at two ends are respectively connected with a B20 receiving filter 16 and three receiving filters 17 of a Band1, a Band3 and a Band7, and the three receiving filters 17 and the B20 receiving filter 16 are both connected with a second integrated radio frequency transceiver 18, so that the carrier aggregation receiving process of B1+ B3+ B7 and the carrier aggregation receiving process of the B20 frequency Band are realized by selecting and switching according to the received frequency bands.
Further, the frequency range of the middle and low frequency bands in the first antenna 12 is 699-2170MHZ, and the frequency range of the high frequency band in the second antenna 11 is 2300-2690 MHZ.
Further, the low frequencies in the first frequency divider 7 are in the range of 1710MHz-2170MHz and 699MHz-960 MHz.
Further, the high and low frequencies of the second frequency divider 15 range from 1710-.
Further, the separate adaptive carrier aggregation implementation device can support the carrier aggregation process of 2CC, 3CC and 4CC related forms of Band1, Band3, Band7 and Band20 frequency bands.
The first integrated radio frequency transceiver 1 and the second integrated radio frequency transceiver 18 are a multi-mode multi-frequency high-integration radio frequency transceiver, and for the RX circuit, the RX circuit is used to directly demodulate a high-frequency radio frequency signal into a low-frequency IQ signal, and a direct down-conversion technology is adopted to support a 16QAM/64QAM demodulation mode, and support a device that can simultaneously process 2 or 3 or 4 channels of received signals and realize carrier aggregation;
the linear power amplifier 2 supports WCDMA, LTE multi-mode multi-band, and the three working frequency bands are 699MHz-960MHz (Low frequency band), 1710-. All ports are matched by 50 ohms, and an MIPI protocol is adopted, so that the linearity and the efficiency are optimized;
a Band20 duplexer 3 for realizing Band20 TX and RX frequency division duplex;
the quadplexer 4, which allows the two bands of Band1 and Band3 to be connected to the antenna at the same time, contains four filters and meets the strict cross isolation specification, and functions as follows:
1. b1+ B3 carrier aggregation is realized;
2. realizing Band1 and Band3 FDD duplexing;
a Band7 duplexer 5 for realizing Band7 TX and RX frequency division duplex;
the nonlinear power amplifier 6 is an integrated nonlinear power amplifier, for a GSM TX signal, a small signal 0dBm output from the wireless transceiver is amplified to 30 or 33dBm through the TXM integrated power amplifier, and then radiated out through an antenna;
the first frequency divider 7 comprises two Pass bands which are 699-960MHz and 1710-2170MHz respectively, a signal received by the first antenna is separated into two paths of MB/LB signals after passing through the device 7, and the signals are mutually independent and respectively flow to the device 1 driver for demodulation;
the first single-pole four-throw switch 8, the first single-pole five-throw switch 9 and the second single-pole five-throw switch 10 are single-pole four-throw and single-pole five-throw switches respectively, and other LTE frequency bands similar to B1, B3, B7 and B20 can be connected to related lines;
the second antenna 11 is a part of the main antenna unit 19, the working frequency band of the second antenna is 2300MHz-2690MHz, the gain of the second antenna is very low for signals in other frequency bands out of band, and the received out-of-band signals are very weak;
the first antenna 12 is another part of the main set antenna unit 19, the working frequency band of the first antenna is 699MHz-2170MHz, the gain of the first antenna is very low for signals in other frequency bands out of band, and the received out-of-band signals are very weak;
the third antenna 13 is a full-band diversity receiving antenna, and the working frequency band is 699MHz-2690 MHz;
second single-pole four-throw switch 14: the single-pole four-throw switch is used for connecting related frequency band signals to corresponding circuits through a GPIO protocol, and each RX circuit works independently;
the antenna comprises a first integrated radio frequency transceiver 1, a linear power amplifier 2, a Band20 duplexer 3, a quadplexer 4, a Band7 duplexer 5, a nonlinear power amplifier 6, a first frequency divider 7, a first single-pole four-throw switch 8, a first single-pole five-throw switch 9, a second single-pole five-throw switch 10, a second antenna 11, a first antenna 12, a third antenna 13, a second single-pole four-throw switch 14, a second frequency divider 15, a B20 receiving filter 16, a third receiving filter 17, a second integrated radio frequency transceiver 18, a main antenna unit 19 and a diversity antenna unit 20.
The second frequency divider 15 comprises two Pass bands which are 699-960MHz and 1710-2690MHz respectively, and the signal received by the third antenna is separated into two paths of MB/LB signals after passing through the device 15;
the B20 receiving filter 16 is a Band20 RX filter and filters out B20 out-of-Band signals;
the working frequency ranges of the three receiving filters 17 are 1805-1880MHz, 2110-2170MHz and 2620-2690MHz respectively, which correspond to the receiving frequency ranges of Band1, Band3 and Band7 respectively, so that the operations of B1, B3 and B7 are independent;
the separated self-adaptive carrier aggregation realizing device can support the carrier aggregation process of 2CC, 3CC and 4CC related forms of Band1, Band3, Band7 and Band20 frequency bands.
Band1 and Band3 are used as representatives of intermediate frequencies, B7 is used as a frequency Band frequently used by FDD high frequency, Band20 is used as a frequency Band widely used by a low frequency Band, and carrier aggregation of 2CA/3CA/4CA single antenna multi-combination forms is carried out.
The following parts only take the relevant carrier wave forms of B1+ B3, B3+ B7, B1+ B3+ B7+ B20 as examples to illustrate the signal flows:
as shown in fig. 3 and 4, for a 2CC network of B1+ B3, B1 is a PCC primary carrier, and B3 is an SCC secondary carrier, and during operation, the signal flow refers to the arrow moving manner shown in fig. 5 and 6.
At this time, since the band signal ranges of B1 are 1920-1980mhz tx and 2110-2170mhz rx, and the band signal ranges of B3 are 1710-1785mhz tx and 1805-1880mhz rx, which are both within the operating range of the first antenna 12, both the transmission signal and the reception signal in the main set antenna unit 19 are transmitted or received by the first antenna 12. When the first antenna 12 is used as a transmitting antenna, B1 is used as a main carrier, the first integrated radio frequency transceiver 1 up-converts a low frequency signal received from a baseband into a high frequency signal, amplifies the high frequency signal by the linear power amplifier 2, and transmits the high frequency signal to the first single-pole five-throw switch 9 through the quadplexer 4, the first single-pole five-throw switch 9 opens a channel, and transmits the signal to the first frequency divider 7 for signal synthesis, and then transmits the signal through the first antenna 12. Similarly, when the first antenna 12 receives signals, the first antenna 12 receives signals B1 and B3, divides the frequency of the signals by the first frequency divider 7, and sends the signals to the first single-pole five-throw switch 9, and after the first single-pole five-throw switch 9 is turned on to the switch that is communicated with the quadrupler 4, the signals are directly sent to the first integrated radio frequency transceiver 1 for modulation. Meanwhile, the working principle of the diversity antenna unit 20 is that the third antenna 13 only plays a role of receiving, and during working, after the third antenna 13 acquires signals, the second single-pole four-throw switch 14 is connected with the second frequency divider 15, and then the B1 and B3 RX signals are filtered by the three-receive filter 17 and then sent to the second integrated radio frequency transceiver 18 for demodulation.
As shown in fig. 5 and fig. 6, for a 2CC network of B3+ B7, B7 is a PCC primary carrier, and B3 is an SCC secondary carrier, and the signal flow refers to the arrow direction manner in fig. 7 and fig. 8. Since the band signal ranges of B3 are 1710-. During uplink transmission, the B7 is used as a main carrier, the first integrated radio frequency transceiver 1 up-converts a low-frequency signal received from a baseband into a high-frequency signal, the high-frequency signal is amplified by the linear power amplifier 2 and then transmitted to the first single-pole four-throw switch 8 through the Band7 duplexer 5, and the first single-pole five-throw switch 8 opens a corresponding channel and transmits the signal through the second antenna 11. During receiving, for the RX signal of B7, the second antenna 11 is used as a receiving antenna, and is connected to the Band7 duplexer 5 through the first single-pole four-throw, so as to directly generate the signal to the first integrated radio frequency transceiver 1 for modulation; for the RX signal of B3, the first antenna 12 is used as a receiving antenna, the first frequency divider 7 divides the frequency of the received signal and sends the divided signal to the first single-pole five-throw switch 9, and the first single-pole five-throw switch 9 is connected to the quadplexer 4 and directly sends the signal to the first integrated rf transceiver 1 for modulation. Meanwhile, the working principle of the diversity antenna unit 20 is that the third antenna 13 only plays a role of receiving, and during working, after the third antenna 13 acquires signals, the third antenna is connected with the second frequency divider 15 through the second single-pole four-throw switch 14, and then the B3 and B7 RX signals are filtered through the three-receive filter 17 and sent to the second integrated radio frequency transceiver 18 for demodulation.
As shown in fig. 7 and 8, for a 4CC network of B1+ B3+ B7+ B20, B7 is a PCC primary carrier, and B1/B3/B20 is an SCC secondary carrier, and the signal flow refers to the arrow direction in fig. 9 and 10. Since the band signal ranges of B1 are 1920-. During uplink transmission, the B7 is used as a main carrier, the first integrated radio frequency transceiver 1 up-converts a low-frequency signal received from a baseband into a high-frequency signal, the high-frequency signal is amplified by the linear power amplifier 2 and then sent to the first single-pole five-throw switch 8 through the B7 quadruplex 5, and the first single-pole five-throw switch 8 opens a corresponding channel and sends the signal out through the first antenna 11. During receiving, for an RX signal of B7, the first antenna 11 is used as a receiving antenna, connected to the Band7 duplexer 5 through the first single-pole four-throw 8, and directly sends the signal to the first integrated rf transceiver 1 for modulation; for RX signals of B1 and B3, the second antenna 12 is used as a receiving antenna, and after frequency division is performed on the signals by the first frequency divider 7, the signals are sent to the first single-pole five-throw switch 9, and after the first single-pole five-throw switch 9 is turned to the switch that is communicated with the quadrupler 4, the signals are directly sent to the first integrated radio frequency transceiver 1 for modulation. For the B20 RX signal, the first antenna 12 is used as a receiving antenna, and after the signal is divided by the first frequency divider 7, the signal is connected to the B20 duplexer 3 via the second single-pole five-throw 10, and the signal is directly sent to the first integrated rf transceiver 1 for modulation. Meanwhile, the working principle of the diversity antenna unit 20 is that the third antenna 13 only plays a role of receiving, and in operation, after the third antenna 13 acquires signals, the second single-pole four-throw switch 14 is connected with the second frequency divider 15, and then the B1, B3, B7 and B20 RX signals are filtered by the three-receive filter 17 and the B20 receive filter 16 and then sent to the second integrated radio frequency transceiver 18 for demodulation.
As shown in fig. 9 and 10, the present invention also discloses a method for implementing separate adaptive carrier aggregation, which specifically includes the following steps:
1) a network priority list is created in advance in a terminal and stored, and the priority order of the priority list is as follows: RPLMN networks, EPLMN/EHPLMN networks, HPLMN networks, UPLMN networks, OPLMN networks, VPLMN networks, and other PLMN networks;
2) entering a starting mode, and judging whether an RPLMN network exists or not; if yes, skipping to the step 3; if not, jumping to the step 9;
3) selecting a registered PLMN network and proceeding to step 4;
4) registering the PLMN network, and entering the step 5 after the registration is successful; otherwise, entering step 9;
5) indicating the selected PLMN network and proceeding to step 6;
6) the network is connected online, then a path is selected according to the requirement, if the received network is not permitted by the base station, the step 9 is entered; if the user reselects the network, entering step 7, and if the VPLMN network expires at the moment, entering step 8; if the network is disconnected or changed, go to step 13;
7) updating the selected network to a temporary repository of the priority list in real time; and entering step 9;
8) searching for a network with a higher priority than the VPLMN level; background searching and judging are carried out, and if a network with a priority higher than the level of the VPLMN is found at the moment, the step 9 is entered; if no network with higher priority than the VPLMN level is found, returning to the step 5;
9) trying to register PLMN networks according to the priority order in the list, preferentially selecting and registering the first priority network in the priority list, and returning to the step 5 if the registration is successful; if the registration fails, entering step 10;
10) judging whether a PLMN network exists in the priority list at the moment; if yes, entering step 11; if not, go to step 12;
11) selecting the next priority network after the registration failure in the priority list, and then entering the step 9;
12) searching whether other effective PLMN networks exist or not, if not, selecting the EPLMN network or the EHPLMN network when the RPLMN network does not exist, then entering a step 14, if so, selecting the effective first priority network in the priority list, and entering a step 5;
13) judging whether a valid and effective PLMN network still exists, if so, entering step 9; if not, entering step 14;
14) waiting for the network to be displayed; if the registered PLMN network is legal and effective, the network is connected online, and then step 5 is entered; if the PLMN network displayed and registered at the moment is different from the RPLMN network, selecting a first priority network in the priority list;
in the whole self-adaptive network registration process, the PLMN comprises all used frequencies of the network and the carrier aggregation form; for example, when the china unicom PLMN is 46001, the carrier aggregation form is B1+ B3, and meanwhile, in the network registration process, the terminal and the network have a mutual handshake protocol interaction process, and only the frequency band and the carrier aggregation form supported by both the network and the terminal are adopted in the actual communication process.
Claims (7)
1. A separated self-adaptive carrier aggregation realizing device is characterized in that: the antenna comprises a main antenna unit (19), wherein the main antenna unit (19) comprises a first antenna (12) and a second antenna (11) which are pre-selected to obtain signal ranges of different frequency bands, and a first integrated radio frequency transceiver (1) of multi-mode multi-frequency, wherein the first antenna (12) is used for transceiving radio frequency signals of a middle-low frequency band range; the second antenna (11) is used for transceiving radio frequency signals in a high frequency band range; the second antenna (11) is connected with a Band7 duplexer (5) through a first single-pole four-throw switch (8), so that the process of transmitting uplink and downlink transmissions of a Band7 frequency Band on different frequencies is realized; the first antenna (12) is separated into two paths of signals of low frequency and medium frequency by a first frequency divider (7); the low-frequency end of the first frequency divider (7) is connected with a second single-pole five-throw switch (10), the medium-frequency end of the first frequency divider (7) is connected with a first single-pole five-throw switch (9), the first single-pole five-throw switch (9) is connected with a quadruplex (4) which is used for receiving Band1 and Band3 and works simultaneously, the second single-pole five-throw switch (10) is connected with a duplexer (3) which is used for receiving a Band20, and the process that the transmission of an uplink and a downlink of a Band20 frequency Band is transmitted on different frequencies respectively is realized; TX ends of the quadruplex (4), the Band7 duplexer (5) and the Band20 duplexer (3) are all connected to a linear power amplifier (2), a first integrated radio frequency transceiver (1) is connected with an input end of the linear power amplifier (2), used for selecting and switching according to the received frequency band, realizing the transceiving process of the carrier aggregation of the B1+ B3 and the carrier aggregation of the signals of the B20 frequency band and the B7 frequency band, the second single-pole five-throw switch (10) and the first single-pole five-throw switch (9) are also connected with a nonlinear power amplifier (6), the first integrated radio frequency transceiver (1) is connected with the input end of the nonlinear power amplifier (6) to realize the transmitting process of a GSM system, GSM receiving is obtained from the first integrated radio frequency transceiver (1), the signal is amplified to 30 or 33dBm through a nonlinear power amplifier (6) and then radiated out through a first antenna (12) of a corresponding frequency band.
2. The apparatus according to claim 1, wherein: the separated type adaptive carrier aggregation realizing device further comprises a diversity antenna unit (20), wherein the diversity antenna unit (20) comprises a third antenna (13) and a second integrated radio frequency transceiver (18), and the third antenna (13) is used for receiving all radio frequency signals of high, middle and low frequencies; the third antenna (13) is connected with a second frequency divider (15) through a second single-pole four-throw switch (14) and is separated into low-frequency and medium-high frequency signals; meanwhile, signals at two ends are respectively connected with a B20 receiving filter (16) and three receiving filters (17) of a Band1, a Band3 and a Band7, and the three receiving filters (17) and the B20 receiving filter (16) are both connected with a second integrated radio frequency transceiver (18), so that the receiving processes of selecting and switching according to the received frequency bands, and realizing carrier aggregation of a B1+ B3+ B7 and carrier aggregation of a B20 frequency Band are realized.
3. The apparatus according to claim 1, wherein: the frequency range of the middle and low frequency bands in the first antenna (12) is 699-2170MHZ, and the frequency range of the high frequency band in the second antenna (11) is 2300-2690 MHZ.
4. The apparatus according to claim 3, wherein: the low frequencies in the first frequency divider (7) are within the range of 1710MHz-2170MHz and 699MHz-960 MHz.
5. The apparatus according to claim 2, wherein: the high and low frequencies of the second frequency divider (15) are in the ranges of 1710-2690MHz and 699-960 MHz.
6. The apparatus according to claim 2, wherein: the separated self-adaptive carrier aggregation realizing device can support the carrier aggregation process of 2CC, 3CC and 4CC related forms of Band1, Band3, Band7 and Band20 frequency bands.
7. A method for implementing separate adaptive carrier aggregation, which uses the apparatus for implementing separate adaptive carrier aggregation according to any one of claims 1 to 6, and comprises the following steps:
1) a network priority list is created in advance in a terminal and stored, and the priority order of the priority list is as follows: RPLMN
Networks, EPLMN/EHPLMN networks, HPLMN networks, UPLMN networks, OPLMN networks, VPLMN networks, and other PLMN networks;
2) entering a starting mode, and judging whether an RPLMN network exists or not; if yes, skipping to the step 3; if not, jumping to the step 9;
3) selecting a registered PLMN network and proceeding to step 4;
4) registering the PLMN network, and entering the step 5 after the registration is successful; otherwise, entering step 9;
5) indicating the selected PLMN network and proceeding to step 6;
6) the network is connected on line, then the path is selected according to the requirement, if the received network is not permitted by the base station, the step is entered
9; if the user reselects the network, entering step 7, and if the VPLMN network expires at the moment, entering step 8; if the network is disconnected or changed, go to step 13;
7) updating the selected network to a temporary repository of the priority list in real time; and entering step 9;
8) searching for a network with a higher priority than the VPLMN level; background searching and judging are carried out, and if a network with a priority higher than the level of the VPLMN is found at the moment, the step 9 is entered; if no network with higher priority than the VPLMN level is found, returning to the step 5;
9) the priority order in the list attempts registration with the PLMN network, prioritizing the first priority network in the priority list
And register, if register succeed, return to step 5; if the registration fails, entering step 10;
10) judging whether a PLMN network exists in the priority list at the moment; if yes, entering step 11; if not, go to step 12;
11) selecting the next priority network after the registration failure in the priority list, and then returning to the step 9;
12) searching whether other effective PLMN networks exist or not, if not, selecting the EPLMN network or the EHPLMN network when the RPLMN network does not exist, then entering a step 14, if so, selecting the effective first priority network in the priority list, and entering a step 5;
13) judging whether a valid and effective PLMN network still exists, if so, entering step 9; if not, entering step 14;
14) waiting for the network to be displayed; if the registered PLMN network is legal and effective, the network is connected online, and then step 5 is entered;
if the PLMN network displayed and registered at the moment is different from the RPLMN network, selecting a first priority network in the priority list;
in the whole self-adaptive network registration process, the PLMN comprises all used frequencies of the network and the carrier aggregation form; at the same time
In the network registration process, the terminal and the network have a mutual handshake protocol interaction process, and only the network and the terminal are connected
The supported frequency band and carrier aggregation forms are adopted in the actual communication process.
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| CN111092295B (en) * | 2019-12-16 | 2023-04-07 | 闻泰通讯股份有限公司 | Antenna, antenna adjusting method, terminal and storage medium |
| CN111342861B (en) * | 2019-12-17 | 2022-04-19 | 锐石创芯(重庆)科技有限公司 | Radio frequency front end device supporting LTE/NR dual connection and mobile terminal |
| CN111478709B (en) * | 2020-04-03 | 2021-11-16 | 惠州Tcl移动通信有限公司 | Carrier aggregation circuit and mobile terminal |
| CN111490813A (en) * | 2020-04-03 | 2020-08-04 | 惠州Tcl移动通信有限公司 | Antenna multiplexing radio frequency device and mobile terminal |
| CN111817733B (en) * | 2020-07-28 | 2022-04-22 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
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| CN113055145A (en) * | 2021-03-08 | 2021-06-29 | 西安兆格电子信息技术有限公司 | Design method for realizing multi-carrier aggregation |
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