CN113938224B - Information transmission method, terminal and device - Google Patents
Information transmission method, terminal and device Download PDFInfo
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- CN113938224B CN113938224B CN202111099001.2A CN202111099001A CN113938224B CN 113938224 B CN113938224 B CN 113938224B CN 202111099001 A CN202111099001 A CN 202111099001A CN 113938224 B CN113938224 B CN 113938224B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses an information transmission method, a terminal and a device, wherein the method comprises the following steps: the terminal determines the downlink data transmission quality of each antenna under each first transmission parameter; the base station determines each first transmission parameter based on a first sounding reference signal SRS sent by each antenna in a first period with the same transmission power; after the downlink data transmission quality of a first antenna is lower than that of a second antenna, the terminal transmits a second SRS of each antenna based on each antenna in a second period, wherein the transmitting power of the first antenna is lower than that of the second antenna; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna; and the terminal performs uplink data transmission through the first antenna and performs downlink data transmission through each antenna according to each second transmission parameter distributed to each antenna by the base station.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to an information transmission method, a terminal, and an apparatus.
Background
With the continuous development of communication technology, electronic devices have become an indispensable part of people's daily life, and bring convenience to people's life, but when the antenna environment where electronic devices are located is poor, the communication quality is reduced and affects users 'normal communication, bringing inconvenience to users' life. The traditional antenna design scheme adopts one antenna more, and the double-antenna design gradually appears in recent years. In a dual-antenna electronic device, one antenna is used as a main antenna to transmit and receive signals, and the other auxiliary antenna is used as an auxiliary antenna to assist communication. When the signal of one antenna is poor, the antenna can be switched to the other antenna to communicate, but in some scenes, the antenna switching is often abnormal, so that the normal communication of a user is influenced. Especially in a 5G scene, four antennas are arranged on the terminal to transmit and receive multiple antennas. Therefore, how to efficiently transmit and receive signals by using each antenna becomes an important issue. In summary, a method for implementing that a terminal selects a suitable antenna during uplink and downlink data transmission is needed at present, so as to improve uplink and downlink throughput rate of the terminal.
Disclosure of Invention
The embodiment of the invention provides an information transmission method, a terminal and a device, which are used for realizing that the terminal selects a proper antenna during uplink and downlink data transmission, thereby improving the uplink and downlink throughput rate of the terminal.
In a first aspect, an embodiment of the present invention provides an information transmission method, including:
determining downlink data transmission quality of each antenna of the terminal under each first transmission parameter; the base station determines each first transmission parameter based on a first sounding reference signal SRS sent by each antenna in a first period with the same transmission power;
if the downlink data transmission quality of the first antenna is lower than that of the second antenna, determining a second SRS transmitted by each antenna in a second period, wherein the transmitting power of the first antenna for transmitting the second SRS is lower than that of the second antenna for transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna;
and according to each second transmission parameter distributed by the base station for each antenna, carrying out uplink data transmission through the first antenna and carrying out downlink data transmission through each antenna.
In the above technical solution, after the terminal transmits the first SRS with the same transmission power in the first period, the channel quality status of each antenna is determined based on the modulation and coding strategy (Modulationand Coding Scheme, MCS) level allocated to the terminal by the base station, so that the first antenna with the best uplink channel quality is selected as the transmitting antenna, but the downlink data transmission quality of the first antenna can be found to be lower than the downlink data transmission quality of the second antenna through the receiving situation of each antenna in the downlink, which means that the optimal antenna scheme is not adopted in the downlink direction, which may cause the decrease of the throughput rate of the downlink. In order to enable the base station to allocate more reasonable transmission parameters for the second antenna, when the terminal transmits the second SRS of each antenna again in the second period, the terminal reduces the transmission power of the first antenna so that the transmission power of the first antenna is lower than that of the second antenna, and therefore when the terminal determines the channel quality state of each antenna again based on the MCS level, the terminal selects the second antenna as the optimal receiving antenna. By the scheme, the terminal is transmitted by adopting the first antenna with the best uplink channel quality when transmitting data; when receiving data, more reasonable transmission parameters are allocated to the second antenna with the best downlink channel quality, so that the uplink and downlink throughput rate of the terminal is improved.
Optionally, the first antenna corresponding to the optimal transmission parameter in the first transmission parameters allocated to each antenna by the base station is determined to be the antenna for uplink data transmission.
In the above technical scheme, the base station determines the channel quality status according to the received SRS, and further allocates a first MCS level to the terminal. The terminal may determine a channel quality status of each antenna based on the first MCS level, thereby allocating each first transmission parameter to each antenna. The terminal determines the first antenna corresponding to the optimal transmission parameter in the first transmission parameters as the antenna for uplink data transmission, thereby improving the uplink data transmission of the terminal.
Optionally, before determining the downlink data transmission quality of each antenna of the terminal under each first transmission parameter, the method further includes:
transmitting a first SRS at a first transmission power through the antennas in the first period of time;
the determining the second SRS transmitted by each antenna in the second period includes:
determining the transmitting power of the first antenna as second transmitting power; the difference value between the second transmitting power and the first transmitting power is not smaller than a set threshold value;
transmitting a second SRS through each antenna in the second period, wherein each antenna except the first antenna transmits the second SRS according to the first transmission power; and the first antenna transmits a second SRS according to the second transmitting power.
In the above technical solution, after the downlink data transmission quality of the first antenna is lower than the downlink data transmission quality of the second antenna, in the first period, the transmitting power of each antenna is the first transmitting power, and in the second period, the transmitting power of the first antenna is reduced, and at this time, the transmitting power of the first antenna is the second transmitting power, and the transmitting power of the other antennas is still the first transmitting power.
Optionally, determining the transmission power of the first antenna as the second transmission power includes:
and determining the interference signal strength of the first antenna according to the downlink data transmission quality of the first antenna.
Determining a second transmitting power of the first antenna according to the interference signal intensity of the first antenna; the difference value between the transmitting power of the first antenna and the transmitting power of the second antenna is not smaller than the interference signal intensity of the first antenna.
In the above technical solution, the basis for the first antenna to reduce the transmission power is the interference signal strength of the first antenna, so that when the second SRS is transmitted, the base station can ensure that the second antenna is known to be the antenna with the optimal channel quality.
Optionally, before the first SRS is transmitted through the antennas at the first transmission power in the first period of time, the method further includes:
and determining the second antenna as a transmitting antenna based on an antenna switching diversity ASDIV mode.
In the technical scheme, the method can be compatible with the existing ASDIV mode, so that the method can be applied to terminals better.
Optionally, after uplink data transmission is performed through the first antenna and downlink data transmission is performed through each antenna according to each second transmission parameter allocated to each antenna by the base station, the method further includes:
and determining the downlink data transmission quality of each antenna under each second transmission parameter.
And after the downlink data transmission quality of the second antenna is higher than that of the first antenna, determining a third SRS transmitted based on each antenna in a third period, wherein the transmission power of the first antenna in the third SRS is lower than that of the second antenna in the third SRS.
In the above technical solution, when the downlink data transmission quality of the second antenna is higher than that of the first antenna, the transmission power of the first antenna is reduced and lower than that of the second antenna, so that in subsequent uplink and downlink data transmission, the terminal always performs uplink data transmission through the first antenna, and performs downlink data transmission through the second antenna as a second transmission parameter allocated by the optimal downlink antenna.
In a second aspect, an embodiment of the present invention further provides an information transmission apparatus, including:
and the acquisition unit is used for acquiring the downlink data transmission quality of each antenna of the terminal under each first transmission parameter, wherein each first transmission parameter is determined by the base station based on the first sounding reference signal SRS sent by each antenna with the same transmission power in a first period.
A processing unit, configured to determine, when downlink data transmission quality of a first antenna is lower than downlink data transmission quality of a second antenna, a second SRS transmitted by each antenna in a second period, where a transmission power of the first antenna when transmitting the second SRS is lower than a transmission power of the second antenna when transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna.
And the sending unit is used for carrying out uplink data transmission through the first antenna and carrying out downlink data transmission through the antennas according to the second transmission parameters distributed by the base station for the antennas.
In a third aspect, an embodiment of the present invention further provides a terminal, including a transceiver unit having a plurality of antennas and a processor.
The processor is configured to perform the method described in the various possible designs of the first aspect.
The receiving and transmitting unit is used for receiving and transmitting uplink and downlink data under the control of the processor.
In a fourth aspect, embodiments of the present invention also provide a computing device, including: a memory for storing a computer program; a processor for invoking a computer program stored in said memory, performing the method as described in the various possible designs of the first aspect according to the obtained program.
In a fifth aspect, embodiments of the present invention also provide a computer-readable non-volatile storage medium, including a computer-readable program, which when read and executed by a computer, causes the computer to perform the method as described in the various possible designs of the first aspect.
These and other implementations of the invention will be more readily understood from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a 4-antenna structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating comparison of antenna performance according to an embodiment of the present invention;
fig. 3 is a flow chart corresponding to an information transmission method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an overall execution flow of an information transmission method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an information transmission device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a diagram of a 4-antenna structure, where SPDT1 and SPDT2 are single pole double throw switches, SW1 is a three pole triple throw switch, n41_tx/RX is a main transmit/receive port, n41_tx is a transmit port, n41_rx is a receive port, n41_div and n41_pm are receive ports, and n41_dm is a receive module, according to the embodiment of the present invention, as shown in fig. 1. Ant1, ant2, ant3, ant4 are four antennas respectively, and a one-to-four-reception mode is realized through SPDT1, SPDT2 and SW 1.
Specifically, signal transmission on the four antennas may be implemented based on communication of the n41_tx transmit port with Ant1, ant2, ant3, ant4, respectively. When the N41_TX port is connected with the public end of the SPDT1, the SPDT1 switch is switched to the pin 2, and the transmitting path is connected with the Ant4, so that the signal transmission of the Ant4 is realized. When the SPDT1 switch is switched to the pin 1 and the IN3 of the SW1 switch is switched to the OUT1, the transmitting path is connected with the Ant1, so that the signal transmission of the Ant1 is realized. When IN3 of SW1 is cut to OUT2, the transmitting path is connected with Ant2, so that the signal transmission of Ant2 is realized. When IN3 of SW1 is cut to OUT3, OUT3 is connected with a pin 1 of SPDT2, a transmitting path is connected with Ant3, and signal transmission of Ant3 is achieved.
Because the time division mode is adopted for receiving and transmitting signals, when the signals are not transmitted, the signals can be simultaneously received through four antennas of Ant1, ant2, ant3 and Ant 4. During signal reception, the port of each antenna is fixed, that is, ant1 is connected to the n41_div receiving port by switching OUT1 to IN1, ant2 is connected to the n41_pm receiving port by switching OUT2 to IN2, ant3 is connected to the n41_dm receiving module by switching SPDT2 to pin 2, and Ant4 is received by switching SPDT1 switch to pin 2 to the n41_rx receiving port.
In the above-described four-antenna structure, the performance of each antenna is not exactly the same due to the environment in which it is located or the design and manufacture of itself, so when one antenna is required for signal transmission, it is obviously desirable to select one antenna with the best uplink signal quality for transmission. Meanwhile, although the four antennas receive signals simultaneously, the signal quality of the four antennas is also different, so that when the base station allocates respective transmission parameters for the four antennas, the current downlink signal quality of the four antennas needs to be considered. This requires feedback of channel state information between the terminal and the base station, thereby achieving optimal antenna selection.
Current common approaches include antenna diversity switching (Antenna Switching Diversity, ASDIV) methods. The ASDIV method judges the quality of the antenna environment according to the strength of the signal received by the mobile phone, and then performs antenna switching, so that the optimal antenna can be divided into the best downlink resources. But when there is self-interference or insufficient isolation between antennas at the terminal, this may result in a less than optimal transmit antenna.
Based on the above problems, the embodiment of the invention provides a method for respectively selecting proper antennas for uplink and downlink data transmission of a terminal, thereby improving uplink and downlink throughput rate of the terminal. As shown in fig. 3:
s301, determining downlink data transmission quality of each antenna of the terminal under each first transmission parameter; the first transmission parameters are determined by the base station based on the first sounding reference signal SRS transmitted by the antennas with the same transmission power in the first period.
S302, if the downlink data transmission quality of a first antenna is lower than that of a second antenna, determining a second SRS transmitted by each antenna in a second period, wherein the transmission power of the first antenna for transmitting the second SRS is lower than that of the second antenna for transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna.
S303, according to the second transmission parameters distributed by the base station for the antennas, uplink data transmission is carried out through the first antenna, and downlink data transmission is carried out through the antennas.
The channel quality state is determined by introducing a sounding reference signal (Sounding Reference Signal, SRS) in the embodiments of the present application. The terminal transmits SRS through each antenna by polling on each antenna, the base station estimates the channel quality of the uplink channel of each antenna according to the received SRS of each antenna, and then the base station allocates downlink resources to the downlink channel according to the channel condition of the uplink channel. Specifically, in time division duplex (Time Division Duplex, TDD) mode, the same frequency is used for both uplink and downlink, and the uplink and downlink channel conditions can be considered identical. Therefore, if the base station wants to acquire the downlink channel condition, the terminal can directly send the SRS to the base station by utilizing channel reciprocity, and the base station judges the channel environment according to the SRS so as to further allocate downlink resources.
When the terminal has self-interference or insufficient isolation between antennas, the channel quality of an uplink channel is not affected by the self-interference or insufficient isolation between antennas, so that an antenna with optimal uplink channel quality can be found through an SRS mode, and a base station can allocate reasonable transmission resources for the optimal antenna. However, when self-interference or insufficient isolation between antennas exists, the antenna with the optimal uplink channel quality may not have high channel quality of the downlink channel, i.e., the antenna is not the optimal antenna in the downlink direction. Therefore, by adopting the mode of the embodiment, the uplink optimal antenna and the downlink optimal antenna are respectively determined through at least two SRS processes.
The uplink optimal antenna determining process comprises the following steps: the first sounding reference signal SRS is determined by each antenna to transmit the same transmit power for a first period of time. If each antenna transmits the first SRS with a transmission power of 25db, the base station determines a first MCS level of the terminal based on the first SRS of each antenna and transmits the first MCS level to the terminal. The terminal can determine the uplink channel quality state of each antenna according to the first MCS level, and determine the first transmission parameters of each antenna based on the first MCS level. If the uplink channel quality state of the first antenna is better than that of the second antenna, the first transmission parameter of the first antenna is better than that of the second antenna, so that the first antenna is more effective in uplink data transmission.
The determining process of the downlink optimal antenna comprises the following steps: and after the terminal determines that the downlink data transmission quality of the first antenna is lower than the downlink data transmission quality of the second antenna based on the downlink data transmission quality of each antenna determined in the downlink data receiving process, polling each antenna again in a second period of time to send a second SRS. When the second SRS is transmitted, the transmitting power of the first antenna is reduced, for example, the SRS is transmitted at 20db, and the second antenna still transmits the SRS at 25 db; thereby, the base station determines a second MCS level of the terminal based on the second SRS of each antenna, and transmits the second MCS level to the terminal. The terminal can determine that the uplink channel quality of the second antenna is optimal according to the second MCS level, so that a better second transmission parameter is allocated to the second antenna, namely, the second transmission parameter of the second antenna is better than the second transmission parameter of the first antenna. Through this process, it can be determined that the second antenna is the antenna with the best downlink channel quality.
Taking the four-antenna structure of fig. 1 as an example, the channel quality of Ant1, ant2, ant3 and Ant4 on the transmitting path and the receiving path respectively is good and bad, as shown in fig. 2, the channel quality of Ant1 on the transmitting path is the best, and the signal quality of Ant2 on the receiving path is the best. If an ASDIV mode is adopted, the quality of the channel quality is judged only according to the strength of the received signal of the mobile phone, that is, the ASDIV only sees which antenna is the best in the antenna environment of the receiving path, so that the ASDIV can determine that Ant2 is the optimal antenna. But Ant2 is not as good as Ant1 in the antenna environment of the transmit path, ASDIV, which results in a transmit time slot that does not operate on an optimal antenna. If the SRS mode is adopted, the optimal uplink channel, namely Ant1, can be determined according to the SRS; however, due to the fact that the self-interference and other factors exist, the receiving performance is poor, and therefore the simple SRS mode can lead to the fact that the selected Ant1 is not the optimal downlink channel.
Thus, although both the above methods can determine which antenna is the optimal antenna and which antenna can allocate the best downlink resources, neither method considers how antennas should be switched when there is self-interference or insufficient isolation between antennas resulting in poor sensitivity of a terminal, not only to make the antennas operate on one optimal antenna in the uplink, but also to decide which antenna to allocate the best downlink resources in the downlink.
According to the embodiment of the application, the transmitting power of the first antenna is reduced in the second SRS, so that the second antenna is used as an optimal antenna when the downlink antenna is selected; and at the time of the first SRS, the first antenna is determined as the optimal uplink antenna.
In order to ensure that the base station can know that the second antenna is the antenna with the optimal channel quality when determining the second MCS based on the second SRS, it is required to ensure that the difference value between the transmission power of the second antenna and the transmission power of the first antenna is not less than a set threshold value when transmitting the second SRS; meanwhile, in order to ensure that the transmission parameters of the first antenna are not set too low, i.e. the base station cannot consider that the channel quality of the first antenna is poor, the set threshold needs to be set reasonably.
When each antenna transmits the second SRS, the transmit power of the first antenna may be determined in the following several ways.
Mode one, presume the reference difference; the reference difference may be set based on a difference in performance index between antennas, and if the difference in performance index between general antennas does not exceed 6db, the reference difference is set to 6db. Thus, the transmit power of the first antenna can be obtained by reducing the transmit power of the second antenna by 6db.
A second mode is that the terminal determines the interference signal intensity of the first antenna according to the downlink data transmission quality of the first antenna; determining a second transmitting power of the first antenna according to the interference signal intensity of the first antenna; the difference value between the transmitting power of the first antenna and the transmitting power of the second antenna is not smaller than the interference signal intensity of the first antenna.
Through the two implementation modes, the transmitting power of the first antenna can be set to a reasonable degree, so that the condition that the base station considers that the channel quality of the second antenna is optimal and the channel quality of the first antenna is not considered to be too poor can be met. In addition, for the antennas other than the first antenna and the second antenna among the antennas, the same transmission power as the second antenna may be maintained or appropriately adjusted according to their respective downlink data transmission qualities.
The embodiment of the application can also be implemented under the condition of combining ASDIV; that is, embodiments of the present application may be a default manner of using ASDIV, because the problem of self-interference or insufficient isolation does not necessarily exist, or does not always exist. Specifically, the terminal first determines, based on an ASDIV manner, that the second antenna is an optimal antenna, i.e., a transmitting antenna; then, a first SRS is sent by adopting an SRS mode; if the first antenna is determined to be the optimal antenna through the first SRS, the second SRS is continuously transmitted, that is, the steps in the embodiments of the present application are executed. If the second antenna is also determined to be the optimal antenna through the first SRS, the subsequent steps in the embodiments of the present application need not be employed.
Based on the fact that the SRS is periodically transmitted, the embodiment of the present application further includes, after uplink data transmission through the first antenna and downlink data transmission through each antenna:
the terminal determines the downlink data transmission quality of each antenna under each second transmission parameter;
and after the downlink data transmission quality of the second antenna is higher than that of the first antenna, the terminal transmits a third SRS of each antenna based on each antenna in a third period, wherein the transmitting power of the first antenna is lower than that of the second antenna.
After the second SRS, the terminal still continues to determine the downlink data transmission quality of each antenna, so as to ensure the throughput rate of downlink data transmission. If the second antenna is still the downlink optimal antenna, the method is performed with reference to the second SRS when the third SRS is transmitted in the third period.
Meanwhile, if the downlink data transmission quality of the second antenna is not the highest at this time, the embodiment of the present application may also perform the cyclic processing in the following manner.
The first mode is based on the ASDIV mode, and the antenna selection is performed again.
Mode two, based on the SRS scheme, the SRS is retransmitted with the same transmission power for each antenna.
Fig. 4 is a schematic overall execution flow chart of an information transmission method provided in the embodiment of the present application, where the flow chart implements a process, specifically as follows:
step 401, the second antenna is the optimal antenna in ASDIV mode, and the second antenna is determined as the transmitting antenna.
Because the ASDIV method only judges the quality of the antenna environment according to the strength of the received signal of the terminal, the second antenna is selected as the main transmitting and receiving antenna according to the strength of the received signal of the terminal. The terminal then controls the transmit path to connect with the second antenna, i.e., SPDT1 switch to pin 1 and IN3 of sw1 to OUT2.
Step 402, executing the SRS action for the first time, and determining whether the second antenna is an optimal antenna; if not, the process proceeds to step 403, and if yes, the process proceeds to step 404.
When the terminal performs the SRS process, the base station determines the channel environment according to the SRS transmitted by the terminal, and further allocates a first MCS level, so that downlink resources are allocated according to the first MCS level, and the terminal determines the uplink signal condition of each antenna according to the first MCS level allocated by the base station, so that the optimal antenna in the uplink direction can be determined.
Step 403, taking the optimal antenna determined by the first SRS, namely the first antenna, as a transmitting antenna; and receiving downlink signals of the antennas according to the first MCS level.
And judging according to the SRS action, namely when the SRS process judges that the second antenna is the optimal antenna in the uplink, the antenna switching is not needed, and the second antenna continues to serve as a main transmitting and receiving antenna. If not, then antenna switching is performed.
Step 404, continuing to take the second antenna as a transmitting antenna.
Step 405, determining whether the first antenna is an optimal antenna on the downlink; if yes, go to step 406, otherwise go to step 407.
Specifically, the strength of the antenna can be determined by itself according to the level of downlink reception of each antenna.
Step 406, continuing to pass through the first antenna as a transmitting antenna;
step 407, performing SRS actions for the second time, and performing SRS for the second time by reducing the transmission power of the SRS transmitted by the first antenna.
Step 408, the optimal antenna determined by the second SRS, namely the second antenna, is used as the optimal antenna for receiving the downlink signal.
When the terminal performs the SRS process, the base station determines the channel environment according to the SRS transmitted by the terminal, and further allocates a second MCS level, so that downlink resources are allocated according to the second MCS level, and the terminal determines the uplink signal condition of each antenna according to the second MCS level allocated by the base station, so as to determine the optimal antenna in the downlink direction.
Step 409, return to step 407, and loop.
The problem of poor sensitivity caused by self-interference or insufficient isolation between antennas of the first antenna causes poor receiving performance and can cause the reduction of the throughput rate of a downlink, so that when the second SRS is transmitted, the transmitting power of the first antenna is reduced, the transmitting power of the first antenna is made to be the second transmitting power, and the transmitting power of other antennas is unchanged and still is the first transmitting power; the base station thus determines a second MCS level of the terminal based on the second SRS for each antenna and transmits the second MCS level to the terminal. The terminal can determine that the uplink channel quality of the second antenna is optimal according to the second MCS level, through the process, the terminal can determine that the second antenna is the antenna with the optimal downlink channel quality, and then the base station allocates the best second transmission parameters for the second antenna. When each antenna transmits the third SRS in the third period, the terminal performs uplink data transmission through the first antenna, and the first antenna is further reduced in transmit power so that the second antenna is used as the optimal antenna to allocate the best second transmission parameter.
An embodiment of the present application provides a schematic structural diagram of an information transmission device, where the information transmission device may be used to execute the method flow illustrated in fig. 5, and as shown in fig. 5, the information transmission device 500 includes:
the acquiring unit 501 is configured to acquire downlink data transmission quality of each antenna of the terminal under each first transmission parameter, where each first transmission parameter is determined by the base station based on a first sounding reference signal SRS sent by each antenna with the same transmission power in a first period.
A processing unit 502, configured to determine, when downlink data transmission quality of a first antenna is lower than downlink data transmission quality of a second antenna, a second SRS transmitted by each antenna in a second period, where a transmission power of the first antenna when transmitting the second SRS is lower than a transmission power of the second antenna when transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna.
And the transmitting unit 503 is configured to perform uplink data transmission through the first antenna and perform downlink data transmission through the antennas according to the second transmission parameters allocated by the base station to the antennas.
An embodiment of the present application provides a schematic structural diagram of a terminal, where the terminal may be used to perform the method flow illustrated in fig. 6, and as shown in fig. 6, the terminal 600 includes:
the processor 601, which may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with an embodiment of the information transfer may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor.
And the transceiver 602 is configured to perform uplink and downlink data transmission and reception under the control of the processor.
Based on the same technical concept, the embodiment of the present application further provides a computing device, as shown in fig. 7, where the computing device 700 includes at least one processor 701, and a memory 702 connected to the at least one processor, and in the embodiment of the present application, a specific connection medium between the processor 701 and the memory 702 is not limited, and in fig. 7, the processor 701 and the memory 702 are connected by a bus, for example. The buses may be divided into address buses, data buses, control buses, etc.
In the embodiment of the present application, the memory 702 stores instructions executable by the at least one processor 701, and the at least one processor 701 can execute the steps included in the aforementioned emergency vehicle avoidance method by executing the instructions stored in the memory 702.
Where the processor 701 is a control center of a computing device, various interfaces and lines may be utilized to connect various portions of the computing device, implement data processing by executing or executing instructions stored in the memory 702 and invoking data stored in the memory 702. Alternatively, the processor 701 may include one or more processing units, and the processor 701 may integrate an application processor and a modem processor, wherein the application processor primarily processes an operating system, a user interface, an application program, and the like, and the modem processor primarily processes issuing instructions. It will be appreciated that the modem processor described above may not be integrated into the processor 701. In some embodiments, processor 701 and memory 702 may be implemented on the same chip, or they may be implemented separately on separate chips in some embodiments.
The memory 702 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 702 may include at least one type of storage medium, and may include, for example, flash Memory, hard disk, multimedia card, card Memory, random access Memory (Random Access Memory, RAM), static random access Memory (Static Random Access Memory, SRAM), programmable Read-Only Memory (Programmable Read Only Memory, PROM), read-Only Memory (ROM), charged erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory), magnetic Memory, magnetic disk, optical disk, and the like. Memory 702 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 702 in the embodiments of the present application may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.
Based on the same technical concept, the embodiments of the present application also provide a computer-readable storage medium storing a computer program executable by a computing device, which when run on the computing device, causes the computing device to perform the steps of the emergency vehicle avoidance method described above. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. The functional units in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and the equivalents thereof, the present application is intended to encompass such modifications and variations.
Claims (10)
1. An information transmission method, the method comprising:
determining downlink data transmission quality of each antenna of the terminal under each first transmission parameter; the base station determines each first transmission parameter based on a first sounding reference signal SRS sent by each antenna in a first period with the same transmission power;
if the downlink data transmission quality of the first antenna is lower than that of the second antenna, determining a second SRS transmitted by each antenna in a second period, wherein the transmitting power of the first antenna for transmitting the second SRS is lower than that of the second antenna for transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna;
and determining that each antenna performs downlink data transmission according to each second transmission parameter distributed to each antenna by the base station.
2. The method of claim 1, wherein determining the downlink data transmission quality for each antenna of the terminal at each first transmission parameter further comprises:
and determining the first antenna corresponding to the optimal transmission parameter in the first transmission parameters distributed by the base station for each antenna as the antenna for uplink data transmission.
3. The method of claim 1, wherein determining the downlink data transmission quality for each antenna of the terminal at each first transmission parameter further comprises:
transmitting a first SRS at a first transmission power through the antennas in the first period of time;
the determining the second SRS transmitted by each antenna in the second period includes:
determining the transmitting power of the first antenna as second transmitting power; the difference value between the second transmitting power and the first transmitting power is not smaller than a set threshold value;
transmitting a second SRS through each antenna in the second period, wherein each antenna except the first antenna transmits the second SRS according to the first transmission power; and the first antenna transmits a second SRS according to the second transmitting power.
4. The method of claim 3, wherein determining the transmit power of the first antenna as the second transmit power comprises:
determining the interference signal strength of the first antenna according to the downlink data transmission quality of the first antenna;
determining a second transmitting power of the first antenna according to the interference signal intensity of the first antenna; the difference value between the transmitting power of the first antenna and the transmitting power of the second antenna is not smaller than the interference signal intensity of the first antenna.
5. The method of claim 3, further comprising, prior to polling through the antennas for the first period of time to transmit a first SRS at a first transmit power:
and determining the second antenna as a transmitting antenna based on an antenna switching diversity ASDIV mode.
6. The method of claim 1, wherein after uplink data transmission through the first antenna and downlink data transmission through the antennas according to the second transmission parameters allocated by the base station to the antennas, further comprising:
determining the downlink data transmission quality of each antenna under each second transmission parameter;
and after the downlink data transmission quality of the second antenna is higher than that of the first antenna, determining a third SRS transmitted by each antenna in a third period, wherein the transmitting power of the first antenna in the third SRS is lower than that of the second antenna in the third SRS.
7. An information transmission apparatus, comprising:
an obtaining unit, configured to obtain downlink data transmission quality of each antenna of a terminal under each first transmission parameter, where each first transmission parameter is determined by a base station based on a first sounding reference signal SRS sent by each antenna with the same transmission power in a first period;
a processing unit, configured to determine, when downlink data transmission quality of a first antenna is lower than downlink data transmission quality of a second antenna, a second SRS transmitted by each antenna in a second period, where a transmission power of the first antenna when transmitting the second SRS is lower than a transmission power of the second antenna when transmitting the second SRS; the first transmission parameter of the first antenna is better than the first transmission parameter of the second antenna;
and the sending unit is used for determining the antennas to carry out downlink data transmission according to the second transmission parameters distributed by the base station for the antennas.
8. A terminal, comprising a transceiver unit having a plurality of antennas and a processor;
the processor for performing the method of any one of claims 1 to 6;
the receiving and transmitting unit is used for receiving and transmitting uplink and downlink data under the control of the processor.
9. A computer readable storage medium, characterized in that the storage medium stores a program which, when run on a computer, causes the computer to implement the method of any one of claims 1 to 6.
10. A computing device, comprising:
a memory for storing a computer program;
a processor for invoking a computer program stored in said memory, performing the method according to any of claims 1 to 6 in accordance with the obtained program.
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| CN202111099001.2A CN113938224B (en) | 2021-09-18 | 2021-09-18 | Information transmission method, terminal and device |
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| KR102697373B1 (en) * | 2019-04-03 | 2024-08-22 | 삼성전자주식회사 | Method for transmitting sounding reference signals and electronic device thereof |
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| CN107580123A (en) * | 2017-08-30 | 2018-01-12 | 努比亚技术有限公司 | Antenna handover trigger control method, communication terminal and computer-readable recording medium |
| WO2021047666A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Method for transmitting sounding reference signal, and related device and storage medium |
| CN112583504A (en) * | 2020-12-16 | 2021-03-30 | 维沃移动通信有限公司 | Antenna switching method and device |
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