CN111278109B - Uplink signal sending method and mobile terminal - Google Patents
Uplink signal sending method and mobile terminal Download PDFInfo
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- CN111278109B CN111278109B CN201811471922.5A CN201811471922A CN111278109B CN 111278109 B CN111278109 B CN 111278109B CN 201811471922 A CN201811471922 A CN 201811471922A CN 111278109 B CN111278109 B CN 111278109B
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- radio frequency
- base station
- frequency band
- flag bit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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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
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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
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses a method for sending uplink signals, wherein a radio frequency circuit comprises two radio frequency chips, and the two radio frequency chips respectively work on two different frequency bands, and the method comprises the following steps: reporting capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station; and receiving a frequency band indication issued by the base station corresponding to the flag bit, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip. By applying the method and the device, the uplink sending frequency can be dynamically switched.
Description
Technical Field
The present application relates to communications technologies, and in particular, to a method and a mobile terminal for transmitting an uplink signal.
Background
The LTE prior art is divided into an FDD mode and a TDD mode, and both of the two modes require uplink and downlink transmission within corresponding uplink and downlink bandwidth ranges. However, in practical situations, there are many scattered frequency bands, there is no corresponding uplink or downlink, the bandwidth is also relatively narrow, and when the user has a relatively large uplink demand, how to utilize these scattered frequency bands realizes single downlink and multiple uplink transmission, reduces the user investment, and realizes the maximum utilization of frequency resources.
The 3GPP protocol proposes a technology of simultaneously utilizing multiple sub-bands (bands), specifically, a CA (Carrier Aggregation) technology is used, and the CA technology can aggregate 2 to 5 LTE component carriers (component carriers, CCs) together to virtualize a wide-band. The CA technology requires a multi-carrier technology, a main carrier and a plurality of auxiliary carriers are transmitted in parallel, uplink frequency cannot be transmitted singly, interference between bands of CA, bandwidth protection and other factors need to be considered, and if a frequency band with frequency multiplication interference cannot be coordinated for CA, the configuration limit is more.
But the CA technology is currently applied in the downstream direction. However, in some services, users have a large uplink demand, and it is desirable to provide multiple uplink frequency bands to dynamically switch uplink frequencies. However, the current prior art has not yet been able to address the above needs. Specifically, 1) the uplink frequency cannot be dynamically switched according to actual service requirements; 2) uplink different-frequency transmission, the current CA technology needs a main carrier and a plurality of auxiliary carriers to transmit in parallel, and uplink frequency transmission cannot be carried out singly; 3) the frequency bands which need to be considered for CA in different frequency bands are limited more, and not all the frequency bands can be used for CA.
Disclosure of Invention
The application provides a method for transmitting an uplink signal and a mobile terminal, which can dynamically switch an uplink transmission frequency.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a method for sending uplink signals comprises two radio frequency chips in a radio frequency circuit, wherein the two radio frequency chips respectively work on two different frequency bands, and the method comprises the following steps:
reporting capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station;
and receiving a frequency band indication issued by the base station corresponding to the flag bit, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
Preferably, the corresponding relationship between the service type and the flag bit and the corresponding relationship between the flag bit and the frequency band indication are preset.
Preferably, when the flag bit set by the terminal changes, the method further includes:
the terminal reports the changed zone bit to a base station;
and receiving a frequency band reconfiguration instruction issued by the base station, opening the indicated radio frequency chip according to the instruction of the base station, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
Preferably, the capability information is reported to the base station through an attach procedure at the terminal.
Preferably, the frequency band indication is carried in a reconfiguration message.
A mobile terminal, comprising: the radio frequency processing unit comprises two radio frequency chips, and the two radio frequency chips work on two different frequency bands respectively;
the baseband processing unit is used for performing baseband processing on the signal;
the frequency band information interface unit is used for reporting the capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station; the base station is also used for receiving the frequency band indication sent by the base station corresponding to the flag bit;
and the radio frequency processing unit is used for performing radio frequency processing on the signal, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
According to the technical scheme, the radio frequency circuit comprises two radio frequency chips, and the two radio frequency chips respectively work on two different frequency bands; when sending uplink signals, a terminal reports the capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station; and receiving a frequency band indication issued by the corresponding zone bit of the base station, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip. By the mode, the frequency band of the UE for sending the uplink signal can be dynamically switched according to the scheduling of the base station.
Drawings
FIG. 1 is a schematic diagram of a terminal RF circuit according to the present application;
fig. 2 is a schematic basic flow chart of an uplink signal transmission method in the present application;
fig. 3 is a schematic diagram of a basic structure of a user terminal in the present application.
Detailed Description
For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.
In the application, the hardware of the terminal is improved so that the signal transmission frequency band can be switched when the uplink signal is transmitted.
As shown in fig. 1, generally, the rf circuit of the terminal includes two rf switches, a power amplifier and an acoustic surface filter. In the present application, the rf switch includes two rf chips (RFICs) connected in parallel. When the uplink signal is transmitted, one of the radio frequency chips is turned on and the other radio frequency chip is turned off under the control of software, so that the transmission frequency band of the uplink signal is switched.
Based on the modified rf channel, fig. 2 is a basic flow diagram of the uplink signal transmitting method in the present application. As shown in fig. 2, the method includes:
And only for the terminal supporting the capacity of a plurality of uplink sub-bands, the base station schedules the terminal to different frequency bands for uplink signal transmission. The processing of reporting the multiple uplink sub-band capability information by the specific terminal can be performed in the attachment process of the terminal.
In general, different uplink signaling frequencies may be used for different traffic types. Specifically, the corresponding relationship between the service type and the flag bit and the corresponding relationship between the flag bit and the frequency band indication may be preset; and the terminal selects a corresponding zone bit to set according to the current service type, and sends the zone bit to the base station for the base station to schedule different sending frequency bands of the uplink signal.
And after receiving the zone bit reported by the terminal, the base station sends a corresponding frequency band indication to the terminal according to the corresponding relation between the zone bit and the frequency band indication so as to indicate the terminal to send uplink signals on the corresponding frequency band.
Specifically, the base station may send the frequency point used in the uplink to the UE through the reconfiguration message.
And the UE opens the corresponding radio frequency chip according to the frequency band indication of the base station and closes the other radio frequency chip so that the UE processes the uplink signal by using the opened radio frequency chip. Therefore, different RFICs can be switched to transmit uplink data on corresponding frequency bands.
The uplink signal transmission method in the present application is terminated.
A specific example is given below to explain the above-described uplink signal transmission method. Wherein the hardware modifications are still shown in fig. 1.
Suppose that the UE supports frequency band 0 transmission on RFIC0 and frequency band 1 transmission on RFIC1, where the frequency band 0 bandwidth is narrow and the frequency band 1 bandwidth is wide;
1) the voice service of the terminal is carried on the frequency band 0, at the moment, the RFIC1 is closed, and uplink data is transmitted on the RFIC 0;
2) when a terminal needs to carry out video service, reporting a service change flag bit to a base station, and indicating the UE uplink transmission frequency band to be switched to the frequency band 1 by the base station through a reconfiguration message;
3) the terminal receives an uplink frequency band emission instruction sent by the base station, closes the RFIC0, opens the RFIC1 and emits uplink data on the frequency band 1;
through the processing, the use rate of the whole frequency band is enlarged according to different services and different uplink frequencies, the services are switched seamlessly, and clients cannot sense the services; meanwhile, since the service is always carried out on a single carrier, the frequency interference limitation of the CA is avoided, and the frequency band resource of the user can be utilized to the maximum extent.
The foregoing is a specific implementation of the uplink signal sending method in the present application. The application also provides a mobile terminal which can be used for implementing the sending method. Fig. 3 is a schematic diagram of a basic structure of a mobile terminal in the present application. As shown in fig. 3, the mobile terminal includes: the device comprises a baseband processing unit, a radio frequency processing unit and a frequency band information interface unit. The radio frequency processing unit comprises two radio frequency chips, and the two radio frequency chips respectively work on two different frequency bands.
And the baseband processing unit is used for performing baseband processing on the signal. The frequency band information interface unit is used for reporting the capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to the base station; and the frequency band receiving module is also used for receiving the frequency band indication sent by the corresponding zone bit of the base station. And the radio frequency processing unit is used for performing radio frequency processing on the signal, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
By the uplink transmitting method and the mobile terminal, the dual RFICs are introduced, different RFICs are controlled by software to calculate different frequencies, one uplink frequency can be transmitted at the RFIC0, according to dynamic scheduling of the base station, when another uplink frequency needs to be transmitted, the RFIC1 is used for transmitting, the RFIC0 is turned off, and the effect of dynamically adjusting the uplink transmitting frequency is achieved. Laboratory and external field practical tests show that when 2 frequencies exist in single downlink and uplink, the terminal can transmit uplink frequency 0 at RFIC0 and transmit uplink frequency 1 at RFIC1, the effect is good, the configuration is very flexible, a plurality of scattered frequency bands of a user can be utilized to serve as services, and CA-free limiting conditions (interference, guard interval, guard bandwidth and the like) exist.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A method for sending uplink signals is characterized in that a radio frequency circuit comprises two radio frequency chips, and the two radio frequency chips respectively work on two different frequency bands, and the method comprises the following steps:
reporting capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station;
and receiving a frequency band indication issued by the base station corresponding to the flag bit, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
2. The method of claim 1, wherein the correspondence between the service type and the flag bit and the correspondence between the flag bit and the frequency band indication are preset.
3. The method of claim 1, wherein when the flag bit set by the terminal changes, the method further comprises:
the terminal reports the changed zone bit to a base station;
and receiving a frequency band reconfiguration instruction issued by the base station, opening the indicated radio frequency chip according to the instruction of the base station, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
4. The method of claim 1, wherein the capability information is reported to the base station through an attach procedure at a terminal.
5. The method of claim 1, wherein the band indication is carried in a reconfiguration message.
6. A mobile terminal, characterized in that the mobile terminal comprises: the radio frequency processing unit comprises two radio frequency chips, and the two radio frequency chips work on two different frequency bands respectively;
the baseband processing unit is used for performing baseband processing on the signal;
the frequency band information interface unit is used for reporting the capability information supporting a plurality of uplink sub-bands and a flag bit set according to the current service type to a base station; the base station is also used for receiving the frequency band indication sent by the base station corresponding to the flag bit;
and the radio frequency processing unit is used for performing radio frequency processing on the signal, opening the indicated radio frequency chip according to the frequency band indication, transmitting uplink data on the corresponding frequency band, and closing another radio frequency chip except the indicated radio frequency chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811471922.5A CN111278109B (en) | 2018-12-04 | 2018-12-04 | Uplink signal sending method and mobile terminal |
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| CN201811471922.5A CN111278109B (en) | 2018-12-04 | 2018-12-04 | Uplink signal sending method and mobile terminal |
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| CN111278109B true CN111278109B (en) | 2022-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114245431B (en) * | 2020-09-09 | 2023-11-07 | 中国电信股份有限公司 | Transmitter switching method and related equipment |
| CN115190591A (en) * | 2021-04-02 | 2022-10-14 | 中国电信股份有限公司 | Uplink data transmission method, device and system |
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