CN105490714B - The multicarrier sending and receiving method of terminal, terminal - Google Patents

Abstract

The present invention provides a terminal and a multi-carrier transmission and reception method of the terminal, wherein the terminal includes: a multi-band antenna, which is provided with multiple antenna structures, and is used to transmit or receive signals corresponding to the antenna structures in the multi-carrier through the antenna structures Carriers, wherein different antenna structures correspond to different frequency bands; baseband chips are used to output baseband signals, and configure antenna structures corresponding to the frequency bands of each carrier according to the frequency bands of each carrier in the multi-carrier; radio frequency modules are used to The baseband signal is modulated onto the multi-carrier, and the multi-carrier is sent to the multi-band antenna, or the carrier received by the multi-band antenna is sent to the baseband chip. By adopting the above-mentioned solution provided by the present invention, the available space of the antenna is also taken into account while realizing the multi-band requirement of the terminal, and the path loss of the wireless link is also reduced due to the omission of a multiplexer.

Description

Terminal, terminal multi-carrier transmission and reception method

technical field

The present invention relates to the communication field, in particular to a terminal and a multi-carrier transmission and reception method of the terminal.

Background technique

With the advancement of wireless communication technology and the development of smart terminals, rich multimedia content can be delivered to users on the move, and the throughput requirements of mobile terminals are also increasing. In order to provide higher data rates for mobile users, the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) proposed the carrier Aggregation (Carrier Aggregation, CA for short) technology. Carrier aggregation technology can provide greater bandwidth for user equipment with corresponding capabilities, and increase the peak rate of UE.

However, while carrier aggregation expands bandwidth and improves spectrum utilization, it also brings problems of increased wireless link path loss and interference between carriers. The main source of the increase in wireless link path loss is the multiplexer (Diplexer) added on the radio frequency link of terminals that currently support carrier aggregation technology; while the suppression of interference between frequency bands during multi-carrier aggregation is affected by the current antenna technology ——In order to meet consumers' demands for small wireless devices, the space available for mobile terminal antennas is getting smaller and smaller, so it is impossible to take into account the requirements of multiple frequency bands and available space for antennas.

Contents of the invention

The present invention provides a terminal and a multi-carrier transmission and reception method of the terminal to at least solve the technical problems in the related art that the multi-frequency band requirement of the terminal and the available space requirement of the terminal antenna cannot be satisfied at the same time.

According to an embodiment of the present invention, a terminal is provided, including: a multi-band antenna, provided with multiple antenna structures, for sending or receiving a carrier corresponding to the antenna structure in the multi-carrier through the antenna structure, wherein , different antenna structures correspond to different frequency bands; the baseband chip is used to output baseband signals, and configures the antenna structure corresponding to the frequency band of each carrier in the multi-carrier according to the frequency band of each carrier; the radio frequency module, It is used to modulate the baseband signal onto the multi-carrier, and send the multi-carrier to the multi-band antenna, or send the carrier received by the multi-band antenna to the baseband chip.

Preferably, the above-mentioned terminal further includes: a tuning module, disposed between the radio frequency module and the multi-band antenna, for performing frequency tuning on the multi-carrier.

Preferably, there is one tuning module.

Preferably, the above-mentioned terminal further includes: an antenna switch, provided with a plurality of ports, and each port only allows input of a carrier corresponding to the port; one end of the antenna switch is connected to the radio frequency module, and the other end is connected to the Tuning module connection.

Preferably, there is one multi-band antenna.

Preferably, the antenna structure includes: a plurality of feeding points and/or short-circuit points, a matching network circuit corresponding to a carrier wave, and radiator wiring.

According to another embodiment of the present invention, a multi-carrier transmission method for a terminal is provided, including: acquiring the frequency band of each carrier in the multi-carrier to be transmitted by the terminal; An antenna structure corresponding to a frequency band, wherein the multiple antenna structures are set in a multi-band antenna of the terminal; and a carrier wave of a frequency band corresponding to the antenna structure is transmitted on the selected antenna structure.

Preferably, before transmitting the carrier in the frequency band corresponding to the antenna structure on the selected antenna structure, the method further includes: performing a transmission frequency tuning process on each carrier in the multi-carrier.

According to yet another embodiment of the present invention, a terminal multi-carrier receiving method is provided, including: receiving multi-carriers from the network side; for each carrier in the multi-carriers, selecting a frequency band corresponding to each carrier The corresponding antenna structure processes the baseband chip in the transmitting terminal for each carrier, wherein the antenna structure is set in the multi-band antenna of the terminal.

Preferably, before the baseband chip in the transmitting terminal of each carrier is processed, the method further includes: performing tuning processing of the receiving frequency on each carrier in the multi-carrier.

Through the present invention, the antenna structure corresponding to the frequency band in the multi-band antenna is used to realize the transmission or reception of multi-carriers, which solves the technical problems in the related art that cannot simultaneously meet the multi-band requirements of the terminal and the available space requirements of the terminal antenna. While realizing the multi-band requirement of the terminal, the available space of the antenna is also taken into consideration, and the path loss of the wireless link is also reduced due to the omission of the multiplexer.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1a is a structural block diagram of a terminal according to an embodiment of the present invention;

Fig. 1b is a schematic structural diagram of a terminal according to a preferred embodiment of the present invention;

FIG. 2 is a flowchart of a multi-carrier transmission method for a terminal according to an embodiment of the present invention;

FIG. 3 is a flowchart of a multi-carrier receiving method for a terminal according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a terminal supporting carrier aggregation according to a preferred embodiment of the present invention;

Fig. 5 is a flowchart of a multi-carrier transmission or reception method for a terminal according to a preferred embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

Fig. 1a is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in Figure 1a, the terminal includes:

The multi-band antenna 10 is provided with a plurality of antenna structures, and is used to transmit or receive carriers corresponding to the above-mentioned antenna structures in the multi-carrier through the above-mentioned antenna structures, wherein different above-mentioned antenna structures correspond to different frequency bands;

The baseband chip 20 is configured to output a baseband signal, and configure an antenna structure corresponding to the frequency band of each carrier in the above multi-carrier according to the frequency band of each carrier;

The radio frequency module 30 is configured to modulate the baseband signal onto the multi-carrier and send the multi-carrier to the multi-band antenna, or send the carrier received by the multi-band antenna to the baseband chip.

Using the terminal including the above-mentioned modules, since the antenna structure corresponding to the frequency band in the multi-band antenna is used to realize the transmission or reception of multi-carriers, it can solve the problem that the multi-band requirements of the terminal and the available space requirements of the terminal antenna cannot be met at the same time. Therefore, while realizing the multi-band requirements of the terminal, the available space of the antenna is also taken into account, and, since the multiplexer is omitted, the path loss of the wireless link is also reduced.

In a preferred implementation process, as shown in Figure 4, the radio frequency module may include the following hardware processing modules, but is not limited thereto:

The radio frequency chip module is used to transmit to the base station through multiple component carriers and receive wireless signals from the base station; that is, it mainly completes the modulation of the transmitted digital baseband signal to make it meet the radio frequency index required for transmission so as to facilitate transmission in space; at the same time The radio frequency signal received in space is demodulated to convert it into a digital baseband signal, and the baseband chip module completes relevant data operations.

RF front-end devices, mainly including filters, power amplifiers and duplexers, etc., complete the amplification and filtering of the transmitted signal, and transmit it from the antenna after passing through the antenna switch; complete the filtering of the signal received by the antenna, and then enter the RF chip module for demodulation.

In a preferred embodiment of this embodiment, as shown in FIG. 1b, the terminal may further include: a tuning module 40 (also referred to as an antenna tuning module), which is arranged between the radio frequency module 30 and the above-mentioned multi-band antenna 10 for Frequency tuning is performed on the above multi-carrier.

In a preferred embodiment, the number of the tuning module 40 is one, which can effectively ensure the available space for the terminal antenna.

In order to realize the support of multiple frequency bands, in this embodiment, as shown in Figure 1b, the terminal further includes: an antenna switch 50, which is provided with a plurality of ports, and each of the above-mentioned ports only allows the carrier input corresponding to the above-mentioned port; the above-mentioned antenna switch One end of 50 is connected to the radio frequency module, and the other end is connected to the tuning module.

In order to further ensure the available space inside the terminal, the number of the above-mentioned multi-band antenna 10 may also be set to one.

In a preferred embodiment of this embodiment, the above-mentioned antenna structure may include but not limited to: multiple feed points and/or short-circuit points, a matching network circuit corresponding to the carrier wave, and radiator wiring.

The embodiment of the present invention also provides a terminal multi-carrier transmission method, as shown in FIG. 2, the method includes:

Step S202, acquiring the frequency band of each carrier in the multi-carrier to be transmitted by the terminal;

Step S204, for each carrier, select an antenna structure corresponding to the above-mentioned frequency band from multiple antenna structures, wherein the above-mentioned multiple antenna structures are set in the multi-band antenna of the above-mentioned terminal;

Step S206, transmitting the carrier wave corresponding to the above-mentioned antenna structure on the above-mentioned selected antenna structure.

Before the carrier in the frequency band corresponding to the above-mentioned antenna structure is transmitted on the above-mentioned selected antenna structure, the frequency of occurrence of each carrier in the above-mentioned multi-carriers may be tuned.

The embodiment of the present invention also provides a multi-carrier receiving method for a terminal, as shown in FIG. 3 , the method includes:

Step S302, receiving multi-carriers from the network side;

Step S304, for each carrier in the above-mentioned multi-carrier, select an antenna structure corresponding to the frequency band of each of the above-mentioned carriers to process the baseband chip in the transmitting terminal of each of the above-mentioned carriers, wherein the above-mentioned antenna structure is set on the multiple carriers of the above-mentioned terminal in the band antenna.

In a preferred embodiment, before the baseband chip in the transmitting terminal of each of the above-mentioned carriers is processed, it is also necessary to perform tuning processing on the receiving frequency of each of the above-mentioned multi-carriers.

In order to better understand the above embodiments, the following describes in detail in conjunction with preferred embodiments.

The embodiment of the present invention proposes a terminal supporting carrier aggregation and its implementation method, which can reduce the path loss of the wireless link, and reduce the interference that may be caused by carrier aggregation by optimizing antenna performance, thereby improving the quality of the communication system.

The design idea of the following embodiments is to use the design of a tunable multi-band antenna to reduce the path loss of the wireless link by implementing the Diplexer function in the multi-band antenna, thereby reducing the power consumption of the terminal; More than one antenna parameter to optimize antenna performance to reduce carrier aggregation interference.

This embodiment also provides a terminal, as shown in FIG. 4 , including: a baseband chip 10, a power management chip 60, a radio frequency chip module 300, a radio frequency front-end device 302, an antenna switch 50, an antenna tuning module 40 and a multi-band antenna 10 Wait.

Among them, the baseband chip 10 is used to synthesize the baseband signal to be transmitted, or to decode the baseband signal received from the radio frequency module 30; at the same time, it is also responsible for controlling and managing the entire terminal, including timing control, digital system control, man-machine Interface management and control and radio frequency device control, etc.

The power management chip 60 is used to provide power for baseband chips, radio frequency chips, radio frequency front-end devices, antenna switches and antenna tuning modules.

The radio frequency chip module 300 is used to transmit to the base station through multiple component carriers, and to receive wireless signals from the base station; that is, to mainly complete the modulation of the transmitted digital baseband signal, so that it can meet the radio frequency index required for transmission so as to facilitate space transmission; At the same time, the radio frequency signal received in the space is demodulated to convert it into a digital baseband signal, and the baseband chip module completes the relevant data operations.

The RF front-end device 302 mainly includes filters, power amplifiers and duplexers, etc., completes the amplification and filtering of the transmitted signals, and transmits them from the antenna after passing through the antenna switch; completes the filtering of the signals received by the antenna, and then enters the radio frequency The chip module performs demodulation.

The antenna switch 50 and the antenna tuning module 40 (that is, the antenna adjustment system) are used to adjust the transmission line structure, the matching network, the antenna resonant element, the antenna ground, and the antenna feed, that is, to select the corresponding matching circuit, feed Electrical points and short-circuit points, etc., that is, the corresponding antenna structures for each frequency band where carrier aggregation is selected.

Here, the antenna tuning module 40 has multiple inputs and multiple outputs. The following uses the transmission link as an example to illustrate. In the transmission chain, multiple input terminals of the antenna tuning module correspond to multi-carrier outputs of the antenna switch, and multiple output terminals of the antenna tuning module correspond to multiple feeding points and short-circuit points of the multi-band antenna. When multiple carriers need to be aggregated (for example, the three-carrier aggregation of carrier 2, carrier 5, and carrier L), after the transmission signals of each carrier are output from the antenna switch to the antenna tuning module, the baseband chip controls the antenna tuning For the frequency of the carrier signal, select matching circuits, feed points, and short-circuit points suitable for carrier 2, carrier 5, and carrier L; then the transmitted signals of each carrier are sent to the antenna through the corresponding feed point, radiated to free space, and communicate with the base station system Wireless communication. For received signals, vice versa.

The multi-band antenna 10 includes multiple antenna feed points, multiple short-circuit points, and corresponding matching networks, in addition to the radiator wiring designed according to actual needs. When at least one conduction path is selected to be turned on from the tuning paths formed by multiple feed points and feed sources, the resonant frequency changes, and thus the working frequency band of the antenna changes. In addition to the basic dimensions of the antenna, in the antenna design, the distance of each feed point to other feed points and possible short-circuit points in the radiator, and the value belonging to the reactive circuit matching network between the feed point and the switch , and the distance from the ground plane to the radiator are variables. By using a multi-band antenna, the antenna functions like an antenna that supports different frequency bands.

Based on the above structural features, a workflow of the terminal is as follows:

On the transmission link, the RF chip module modulates the baseband signal output by the baseband chip to the high-frequency carrier signal, and outputs a low-power RF signal to the RF front-end device for filtering and amplification, and then reaches the antenna switch; through the antenna switch At this time, under the control of the baseband chip, each carrier signal is output to the antenna tuning module through the carrier 1, carrier 2...carrier L ports; at this time, the baseband chip controls the antenna tuning module to select the corresponding matching circuit according to the frequency of the transmitted signal , feed point and short-circuit point, etc.; then the transmitted signal is sent to the antenna through the feed point, radiates to free space, and communicates wirelessly with the base station system.

On the receiving link, the antenna sends the received downlink signal transmitted by the base station antenna to the antenna tuning module. At this time, the baseband chip synchronously obtains the received information of each frequency band; the baseband chip controls the The antenna tuning module selects the corresponding matching circuit, feed point and short-circuit point, etc., and then the signals of each frequency band enter the antenna switch through their respective appropriate tuning channels, and then send them to the duplexer, and reach the receiving end of the RF transceiver chip through the receiving link. The RF chip internally performs down-conversion, demodulates it into a baseband signal, and transmits it to the baseband chip for information processing.

It should be noted that under different working requirements, the antenna can choose a short-circuit point to connect to the ground through the tuning component, or choose to connect directly to the ground, or choose to use between two or more short-circuit points and the ground. . That is, according to the different environments in which the antenna works, determine the appropriate location of the antenna access feed point and the appropriate location and number of short-circuit points,

Compared with related technologies, only one antenna is still needed here, and multiplexers are not required. All frequency bands are supported by a multi-band antenna including multiple feed points and multiple short-circuit points, an antenna tuning module, and a switch, which does not increase the size of the antenna while eliminating the need for a multiplexer. In terms of performance, in the existing solutions using broadband antennas, when it is necessary to support carrier aggregation of multiple frequency bands, such as one intermediate frequency and one low frequency, the broadband antenna has poor out-of-band suppression of low-frequency transmission, and the harmonics just fall. When entering the mid-frequency band, the antenna cannot provide good rejection. However, when a multi-band antenna is used to support these two frequency bands, the IF part can independently improve the efficiency in the IF band and the out-of-band rejection, and the low-frequency part can also improve the efficiency in the low frequency band and the out-of-band rejection. , the improvement of in-band efficiency means the improvement of antenna performance, and the improvement of out-of-band suppression means the reduction of interference to other frequency bands, thereby reducing the interference of carrier aggregation and optimizing the performance of terminals during carrier aggregation.

Fig. 5 is a work flow diagram of schematic steps according to an embodiment of the present invention, as shown in Fig. 5, the specific implementation method is: when the terminal works in the carrier aggregation mode, the baseband chip first determines which frequency bands to use for carrier aggregation ; Then according to each frequency band of carrier aggregation, configure the antenna switch, antenna tuning module and select the corresponding matching circuit, feed point and short-circuit point, etc., that is, select the corresponding antenna structure of each frequency band; after the above configuration and selection are completed, it is completed Tuning the antenna structure corresponding to each frequency band, so that the corresponding antenna structure works in the desired working frequency band; and then, using the tuned antenna structure of each frequency band to transmit/receive signals.

In summary, the embodiments of the present invention achieve the following beneficial effects:

First of all, due to the use of multi-band antennas, the Diplexer on the radio frequency link can be omitted, which can significantly reduce the path loss of the wireless link and improve the radio frequency performance of the terminal; secondly, use the frequency tuning of the multi-band antenna to optimize the Antenna performance, thereby reducing interference during multi-carrier aggregation, thereby improving the quality of communication systems

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. a kind of terminal, which is characterized in that including：

Multiband antenna is provided with mutiple antennas structure, for pass through the antenna structure send or receive in multicarrier with institute State the corresponding carrier wave of antenna structure, wherein the different antenna structures correspond to different frequency ranges；

Baseband chip, for exporting baseband signal, and according to the frequency range configuration of each carrier wave in the multicarrier with it is described each The corresponding antenna structure of frequency range of carrier wave；

Radio-frequency module, for the multicarrier to the multicarrier, and to be sent to the modulates baseband signals described more Frequency-band antenna, alternatively, the carrier wave that the multiband antenna receives is sent to the baseband chip；

Wherein, the antenna structure includes：Multiple distributing points and/or short dot, matching network circuit corresponding with carrier wave and Radiator cabling.

2. terminal according to claim 1, which is characterized in that further include：

Tuner module is set between the radio-frequency module and the multiband antenna, for the multicarrier into line frequency Tuning.

3. terminal according to claim 2, which is characterized in that the tuner module is one.

4. terminal according to claim 2, which is characterized in that further include：Duplexer is provided with multiple ports, each The port only allows carrier wave corresponding with the port to input；Described duplexer one end is connect with the radio-frequency module, separately One end is connect with the tuner module.

5. terminal according to claim 1, which is characterized in that the multiband antenna is one.

6. a kind of multi-carrier transmission method of terminal, which is characterized in that including：

Obtain the frequency range of each carrier wave in terminal multicarrier to be sent；

For each carrier wave, antenna structure corresponding with the frequency range is selected from mutiple antennas structure, wherein the multiple day Cable architecture is set in the multiband antenna of the terminal；

The carrier wave with the antenna structure corresponding frequency band is sent on the antenna structure of selection.

7. according to the method described in claim 6, it is characterized in that, being sent and the antenna on the antenna structure of selection Before the carrier wave of structure corresponding frequency band, further include：

The tuning process of transmission frequency is carried out to each carrier wave in the multicarrier.

8. a kind of multicarrier receiving method of terminal, which is characterized in that including：

Receive the multicarrier from network side；

For each carrier wave in the multicarrier, select antenna structure corresponding with the frequency range of each carrier wave will be described every The baseband chip that a carrier wave is sent in terminal is handled, wherein the antenna structure is set to the multiband day of the terminal In line；

Wherein, the antenna structure includes：Multiple distributing points and/or short dot, matching network circuit corresponding with carrier wave and Radiator cabling.

9. according to the method described in claim 8, it is characterized in that, by each carrier wave send the baseband chip in terminal into Before row processing, further include：

The tuning process of receives frequency is carried out to each carrier wave in the multicarrier.