CN111405594B - Information transmission method, terminal and storage medium - Google Patents
Information transmission method, terminal and storage medium Download PDFInfo
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- CN111405594B CN111405594B CN202010144947.5A CN202010144947A CN111405594B CN 111405594 B CN111405594 B CN 111405594B CN 202010144947 A CN202010144947 A CN 202010144947A CN 111405594 B CN111405594 B CN 111405594B
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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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- 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
Abstract
The embodiment of the invention discloses an information transmission method, a terminal and a storage medium, which comprise the steps of receiving first information in a current time slot, and carrying out interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast from a base station to a target terminal and a relay terminal; and receiving second information in the next time slot, and enhancing interference-removing first information by using the second information to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the relay terminal adjusts the first information.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method, a terminal, and a storage medium.
Background
With the continuous development of communication technology, the requirements of terminals on the transmission rate during information transmission are increasing.
In the prior art, when the simultaneous same-frequency full duplex transmission is performed, the base station directly transmits information to the target terminal, and when the quality of a receiving channel of the target terminal is poor, the base station needs to retransmit the information to the target terminal, so that the time when the information terminal receives the information is reduced, and the transmission rate when the information is transmitted is reduced.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present application are expected to provide an information transmission method, a terminal, and a storage medium, which can improve a transmission rate during information transmission.
The technical scheme of the application is realized as follows:
the embodiment of the application provides an information transmission method, which is applied to a target terminal, and comprises the following steps:
receiving first information in a current time slot, and performing interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast to the target terminal and the relay terminal by a base station;
and receiving second information in the next time slot, and enhancing the interference-removed first information by using the second information to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the relay terminal adjusts the first information.
In the above scheme, the performing interference removing processing on the first information to obtain interference removing first information includes:
receiving first interference information sent by the base station in the last time slot, and removing the first interference information from the first information to obtain interference information to be processed;
And determining second interference information generated by the current time slot, and removing the second interference information from the interference information to be processed to obtain the interference-removing first information.
In the above solution, the enhancing the interference-removed first information by using the second information includes:
the second information is added to the de-interference first information to enhance the de-interference first information.
The embodiment of the application also provides an information transmission method which is applied to the relay terminal, and the method comprises the following steps:
when the relay terminal receives first information in a current time slot, adjusting the power of the first information to obtain second information, wherein the first information is information multicast to a target terminal and the relay terminal by a base station;
and in the next time slot, sending the second information to a target terminal according to the first address information in the second information, wherein the first address information is the address information of the target terminal.
In the above scheme, the adjusting the power of the first information to obtain the second information includes:
the power of the first information is increased, and preprocessing information is obtained;
and removing interference information in the preprocessing information to obtain the second information.
In the above solution, the removing the interference information in the pre-processing information to obtain the second information includes:
receiving first interference information sent by the base station in the last time slot, and removing the first interference information from the preprocessing information to obtain first preprocessing information;
and determining second interference information generated by the current time slot, and removing the second interference information from the first preprocessing information to obtain the second information.
The embodiment of the application provides a target terminal, which comprises:
the interference elimination unit is used for receiving first information in the current time slot, and carrying out interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast to the target terminal and the relay terminal by the base station;
the receiving unit is configured to receive second information in a next time slot, and enhance the interference-removed first information by using the second information, so as to determine target information sent by the base station from the first information, where the second information is information sent to the target terminal after the relay terminal adjusts the first information.
The embodiment of the application provides a relay terminal, which comprises:
the adjustment unit is used for adjusting the power of the first information to obtain second information when the relay terminal receives the first information in the current time slot, wherein the first information is information of multicast from the base station to the target terminal and the relay terminal;
and the sending unit is used for sending the second information to the target terminal according to the first address information in the second information in the next time slot, wherein the first address information is the address information of the target terminal.
The embodiment of the application also provides a target terminal, which comprises:
the method comprises the steps of storing an information transmission program executable by a first processor, and executing the method applied to the target terminal through the first processor when the information transmission program is executed.
The embodiment of the application also provides a relay terminal, which comprises:
the second memory is in communication with the second processor through the second communication bus, the second memory stores a program for information transmission executable by the second processor, and the method applied to the relay terminal is executed through the second processor when the program for information transmission is executed.
An embodiment of the present application provides a storage medium having stored thereon a computer program for application to a target terminal, wherein the computer program when executed by a first processor implements the method described above for application to the target terminal.
An embodiment of the present application further provides a storage medium having a computer program stored thereon for application to a relay terminal, where the computer program when executed by a second processor implements the method described above for application to the relay terminal.
The embodiment of the application provides an information transmission method, a terminal and a storage medium, wherein the information transmission method comprises the following steps: receiving first information in a current time slot, and carrying out interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast from a base station to a target terminal and a relay terminal; and receiving second information in the next time slot, and enhancing interference-removing first information by using the second information to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the relay terminal adjusts the first information. By adopting the implementation scheme of the method, the target terminal enhances the first information after interference elimination by receiving the adjusted first information, namely the second information, forwarded by the relay terminal, so that the target terminal can determine the target information sent by the base station from the first information.
Drawings
Fig. 1 is a flowchart of a method for transmitting information according to an embodiment of the present application;
FIG. 2 is a flow chart of an exemplary information transmission method according to an embodiment of the present application;
FIG. 3 is a graph of an exemplary information transfer rate provided by an embodiment of the present application;
FIG. 4 is a graph illustrating exemplary channel differences versus transmission rates provided by embodiments of the present application;
fig. 5 is a flowchart of a second information transmission method according to an embodiment of the present application;
fig. 6 is a schematic diagram of a composition structure of a target terminal according to an embodiment of the present application;
fig. 7 is a schematic diagram of a second composition structure of a target terminal according to an embodiment of the present application;
fig. 8 is a schematic diagram of a composition structure of a relay terminal according to an embodiment of the present application;
fig. 9 is a schematic diagram of a second component structure of a relay terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.
Example 1
An embodiment of the present application provides an information transmission method, which is applied to a target terminal, and fig. 1 is a flowchart of an information transmission method provided by the embodiment of the present application, as shown in fig. 1, where the information transmission method may include:
S101, receiving first information in a current time slot, and carrying out interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast to a target terminal and a relay terminal by a base station.
The information transmission method provided by the embodiment of the application is suitable for the scene that the base station sends information to the target terminal.
In the embodiment of the application, the target terminal can be in a state of receiving information all the time, the target terminal can also receive the information in a preset time period, the target terminal can also receive the information in a time period constrained by the configuration information according to the configuration information, and the determination can be specifically performed according to the actual situation, and the embodiment of the application is not limited to the situation.
In the embodiment of the application, when the target terminal receives the first information in the current time slot, other interference information, such as the information sent to the target terminal by the base station in the previous time slot, some self-interference information generated by the target terminal in the next time slot, and the like, are possibly received at the same time, and when the interference information is mixed in the first information, the target terminal needs to perform interference elimination processing on the first information, so as to obtain interference elimination first information.
The first information is information multicast by the base station to the target terminal and the relay terminal.
It should be further noted that the first information may be digital information, the first information may also be analog information, and the first information may also be other information, which may be specifically determined according to the actual situation, which is not limited in the embodiment of the present application.
In the embodiment of the present application, the mode of performing interference removal processing on the first information by the target terminal may be filtering the first information to remove the interference information in the first information, or may be other modes of removing the interference information in the first information, which may be specifically determined according to the actual situation, and the embodiment of the present application is not limited to this.
In the embodiment of the application, when the base station needs to multicast the first information to the target terminal and the relay terminal, the base station adds the address information of the target terminal and/or the relay terminal in the first information, and sends the first information to the target terminal and the relay terminal respectively through the address information.
It should be noted that, the base station may send first information carrying first address information of the target terminal to the target terminal, send first information carrying first address information and second address information of the relay terminal to the relay terminal, and when the relay terminal receives the first information, the relay terminal may transmit the first information after power adjustment to the target terminal according to the first address information in the first information.
Before multicasting the first information to the target terminal and the relay terminal, the base station needs to determine the target terminal and the relay terminal from the plurality of terminals, wherein the base station determines the target terminal and the relay base station, and can determine the target terminal from the plurality of terminals for the base station, and then determine the relay terminal from the plurality of terminals except the target terminal.
It should be further noted that the number of the target terminals may be one or at least one, and specifically may be determined according to actual situations, which is not limited in the embodiment of the present application. The number of relay terminals may be one or at least one, and may specifically be determined according to actual situations, which is not limited in the embodiment of the present application.
It should be further noted that, the manner of determining the target terminal by the base station may be that the base station determines the target terminal randomly from a plurality of terminals, or may be that the base station uses a terminal with the worst channel quality among a plurality of terminals as the target terminal, or the base station may determine the target terminal from a plurality of terminals by other manners, which may be specifically determined according to the actual situation, which is not limited by the embodiment of the present application.
The method for determining the relay terminal by the base station from the plurality of terminals except the target terminal may be that the base station determines the terminal with the highest channel quality from the plurality of terminals except the target terminal, and uses the terminal with the highest channel quality as the relay terminal, or that the base station randomly selects one terminal from the plurality of terminals except the target terminal, and uses the randomly selected terminal as the relay terminal, or that the base station may determine the relay terminal from the plurality of terminals except the target terminal by other methods, specifically, may determine the relay terminal according to the actual situation, which is not limited by the embodiment of the present application.
In the embodiment of the application, each of the plurality of terminals comprises a transmitting antenna and a receiving antenna, i.e. each terminal can utilize the transmitting antenna to transmit signals and can also utilize the receiving antenna to receive signals.
In the embodiment of the application, when a plurality of terminals are two, namely two terminals, when the base station needs to multicast the first information to the two terminals, the two terminals can communicate in a simultaneous same-frequency full duplex communication mode, so that the information transmission rate of each of the two terminals is improved, namely the channel capacity of each of the two terminals is improved.
It should be noted that, the channel capacity characterizes the transmission capability of the channel, and the information transmission rate characterizes the transmission capability of the channel, so that the information transmission rate, that is, the channel capacity, is improved.
When the second terminal receives the first information, the second terminal adjusts the first information to obtain second information, and forwards the second information to the first terminal, so that the first terminal can directly obtain the first information without interference, and can also receive the adjusted first information, namely the second information, through the relay terminal, and the second information is utilized to enhance the first information without interference so as to obtain target information sent by the base station.
In the embodiment of the present application, a target terminal performs interference removal processing on first information to obtain interference-removed first information, which specifically includes: and receiving first interference information sent by the base station in the last time slot, and removing the first interference information from the first interference information to obtain interference information to be processed.
The first interference information is information that the target terminal receives the base station transmission in the last time slot.
In the embodiment of the present application, the manner of removing the first interference information in the first information by the target terminal may be a manner of removing the first interference information in the first information by using channel filtering, may be a manner of removing the first interference information in the first information by using digital self-interference cancellation, may also be other manners of removing the interference, and may specifically be determined according to the actual situation, which is not limited in the embodiment of the present application.
In the embodiment of the application, after the target terminal removes the first interference information from the first information to obtain the interference information to be processed, the target terminal determines the second interference information generated by the current time slot, and removes the second interference information from the interference information to be processed to obtain the interference-removed first information.
It should be noted that, the second interference information is interference information generated by the target terminal in the current time slot.
It should be noted that, the manner in which the target terminal determines the second interference information generated by the current timeslot may be that the target terminal compares the interference information generated by the current timeslot with the first information, uses the information in the first information that is the same as the interference information generated by the current timeslot as the second interference information, and the target terminal may also compare the timeslot information phase of the information generated by the current timeslot with the first information phase of the first information, uses the information in the first information that corresponds to the first information phase that is the same as the timeslot information phase as the second interference information, and may also determine the second interference information by other manners, which may be specifically determined according to the actual situation.
In the embodiment of the application, the mode of eliminating the second interference information from the interference information to be processed by the target terminal can be the mode of eliminating the second interference information in the interference information to be processed by the target terminal by utilizing the channel filtering, can also be the mode of eliminating the second interference information in the interference information to be processed by utilizing the digital self-interference elimination, can also be the mode of eliminating the interference, and can be specifically determined according to the actual situation.
S102, receiving second information in the next time slot, and enhancing interference-removing first information by using the second information to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the relay terminal adjusts the first information.
In the embodiment of the application, when the target terminal receives the second information, the target terminal adds the second information into the interference-removing first information to enhance the interference-removing first information, and when the target terminal fails to receive the first information from the base station or the first information received by the target terminal from the base station is incomplete, the target terminal can acquire the adjusted first information, namely the second information, sent by the base station from the relay terminal, and can supplement the first information completely by utilizing the second information without the base station to send the target information to the target terminal again, thereby improving the information transmission rate of the target terminal.
The second information is information that the relay terminal adjusts the first information and then transmits the adjusted first information to the target terminal.
The number of terminals receiving the multicast information of the base station is two, and the two terminals communicate through a simultaneous common-frequency full duplex communication mode, as shown in fig. 2, the base station sends first information to the first terminal and the second terminal respectively in a multicast mode in a last time slot, when the first terminal receives the first information, the first terminal performs interference elimination processing on the first information to obtain interference elimination first information, after the first terminal increases the power of the interference elimination first information, the first terminal transmits the interference elimination first information after the power increase to the second terminal in a current time slot, meanwhile, the first terminal receives the first information after the power adjustment sent by the second terminal in the current time slot, the first information after the power adjustment is the information obtained after the second terminal receives the first information sent by the base station in the last time slot, when the second terminal obtains the first information after the power adjustment, the second terminal sends the first information after the power adjustment to the first terminal, and simultaneously, the second terminal sends the interference elimination first information after the power adjustment to the first terminal receives the first information after the power adjustment.
In the embodiment of the application, the first terminal receives the first information sent by the base station and the first information forwarded by the base station through the second terminal, and the second terminal receives the first information sent by the base station and the first information forwarded by the base station through the first terminal to obtain a data transmission table shown in the table (1).
Table (1) transmission data table of base station when transmitting information to first terminal and second terminal at each time slot
In table 1, S is a transmitted signal, R is a received signal, and C is a signal after interference cancellation. T in Table 1 1 (i) For the signal sent by the first terminal, t 2 (i) R for the signal sent by the second terminal 1 (i) R for the signal received by the first terminal 2 (i) For the signal received by the second terminal, y 1 (i) Signal after interference cancellation for the received signal by the first terminal, y 2 (i) The signal after interference cancellation for the second terminal to the received signal,for signals transmitted by the base station, ">Is the power coefficient of the signal x (i), h d1 For the channel gain between the base station and the first terminal, h d2 For the channel gain between the base station and the second terminal, h 12 For the channel gain between the first terminal and the second terminal, h 21 For the channel gain between the second terminal and the first terminal,/for the second terminal>For the self-interference factor of the first terminal, +. >Self-drying for a second terminalDisturbance factor, z 1 (i) For white noise received by the first terminal, z 2 (i) White noise received for the second terminal, +.>For y in the first terminal 1 (i) Power coefficient of>For y in the second terminal 2 (i) The range of the power coefficient of i is 1.
According to the derivation in Table 1, the general formula involved in self-interference and noiseCan be represented by formula (1)
Wherein, the liquid crystal display device comprises a liquid crystal display device,is a self-interference signal->For the self-interference cancellation factor of the second terminal, < > for>Is a self-interference cancellation factor for the first terminal.
The power of the residual self-interference and noise can be expressed by the formula (2)
Under the limitation of the transmission power,has astringency.
To verifyThe convergence of the first information can be calculated by using two decoding modes of forward decoding and backward decoding, and the transmission rate when the base station multicasts the first information to the target terminal.
Wherein forward decoding is to decode the first information from the first time slot until, at the ith time slot, the x (i) information transmitted by the ith time slot base station is decoded, i.e., for the first terminal, the first terminal has decoded the signal transmitted from the first time slot to the i-1 th time slot base station at the ith time slot, i.e., the x (i-1) signal can be ignored at the ith time slot. In addition, in the (i+1) th time slot, the first terminal eliminates the self-interference of the received information and obtains the information y j The (i+1) signal x (i+1) is included in the (i+1), and the first terminal directly regards the x (i+1) signal as a noise signal. When the first terminal is used as a target terminal, the first information sent by the base station and the first information forwarded by the second terminal are continuously received by adopting a plurality of pairs of receiving antennas in MIMO, the formula (3) can be obtained through formula derivation and forward decoding of the table 1, and the first terminal can decode to obtain first information x (i) by using the formula (3); when the second terminal is used as a target terminal, the first information sent by the base station and the first information forwarded by the first terminal are continuously received by adopting multiple pairs of receiving antennas in MIMO, the formula (4) can be obtained through formula derivation and forward decoding of the table 1, and the second terminal can also decode to obtain the first information x (i) by using the formula (4).
Wherein, the liquid crystal display device comprises a liquid crystal display device,
to verifyThe target terminal may also calculate a transmission rate of the base station when multicasting the first information to the target terminal using a backward decoding method.
Wherein the backward decoding is to store the received signal first, i.e. the first terminal stores r j (1)...r j (N) the second terminal saves r j (1)...r j (N) after saving, the first terminal performs inverse decoding from the nth time slot to the first time slot, i.e., from the N-1 th time slot to the i+1th time slot, and the first terminal has already decoded the signals from the base station and from the second terminal. In the (i+1) th time slot, the first terminal eliminates self-interference to the received information to obtain information y j The decoded signal x (i+1) is contained in (i+1), i.e., in the i+1th slot, the x (i+1) signal can be ignored. In the (i+1) th time slot, the first terminal eliminates the self-interference of the received information to obtain information y j (i) Including the undecoded information x (i-1), the first terminal directly treats the x (i + 1) signal as a noise signal. When the first terminal is used as a target terminal, the first information sent by the base station and the first information forwarded by the second terminal are continuously received by adopting a plurality of pairs of receiving antennas in MIMO, the formula (5) can be obtained through formula derivation and backward decoding of the table 1, and the first terminal can decode to obtain first information x (i) by using the formula (5); when the second terminal is used as a target terminal, the first information sent by the base station and the first information forwarded by the first terminal are continuously received by adopting multiple pairs of receiving antennas in MIMO, the formula (6) can be obtained through formula derivation and backward decoding of the table 1, and the second terminal can also obtain the first information x (i) through decoding by using the formula (6).
Wherein, the liquid crystal display device comprises a liquid crystal display device,
according to the two decoding modes of forward decoding and backward decoding, the transmission rate R of the base station when transmitting the first information to the target terminal can be obtained to meet the formula (7).
Wherein for forward decoding Q j The expression of (2) is shown in formula (8):
for backward decoding Q j The expression of (2) is shown in formula (9):
wherein a in the formula (8) and the formula (9) is a power coefficient.
The optimal transmission rate when the base station transmits information to the target terminal can be obtained through the formula (10).
In order to compare the transmission rate of the base station transmitting the first information to the first terminal and/or the second terminal in the present application with the transmission rate of the base station directly transmitting the first information to the target terminal in the prior art, the channel gain h between the base station and the first terminal can be set d1 Channel gain h between base station and second terminal of 0.2 d2 Channel gain h from first terminal to second terminal of 0.4 12 And channel gain h from second terminal to first terminal 21 Are all 5, the base station transmits signal pairsSignal to noise ratio p of white noise s /N 0 Can be 0-30dB, and the signal-to-noise ratio P of the first terminal transmitting signal to white noise 1 /N 0 Can be 0dB, and the signal-to-noise ratio P of the second terminal transmitting signal to white noise 2 /N 0 And may be 10dB, the self-interference cancellation factor of the first terminal and the second terminal are both-30 dB, and the resulting transmission rate is shown in fig. 3.
In fig. 3, a first curve of the four transmission rate curves is a rate curve obtained after backward decoding; the second curve is a rate curve obtained after forward decoding; the third curve is a rate curve when the base station directly transmits the first information to the target terminal in the prior art; the fourth curve is a rate curve when the base station transmits the first information to the first terminal and/or the second terminal in the present application. All four curves have a growing trend along with the increase of the signal-to-noise ratio of the base station transmitting signal to white noise, namely the higher the signal-to-noise ratio of the base station transmitting signal to white noise is, the larger the transmission rate between the base station and the first terminal and/or the second terminal is. When the signal-to-noise ratio is in the range of 0-20dB, the first curve and the second curve are overlapped, and when the signal-to-noise ratio is in the range of 20-30dB, the first curve is faster than the second curve along with the increase of the signal-to-noise ratio. When the signal-to-noise ratio is in the range of 0-17dB, the transmission rate of the fourth curve increases faster than the transmission rate of the third curve as the signal-to-noise ratio increases, and when the signal-to-noise ratio is 17dB, the transmission rate of the fourth curve is the same as the transmission rate of the third curve, and when the signal-to-noise ratio is in the range of 17-30dB, the transmission rate of the third curve increases faster than the transmission rate of the fourth curve as the signal-to-noise ratio increases, and the transmission rate of the third curve increases faster than the transmission rate of the fourth curve. When the signal-to-noise ratio is in the range of 0-30dB, the transmission rate of the first curve and the transmission rate of the second curve are higher than those of the third curve and the fourth curve along with the increase of the signal-to-noise ratio.
If the signal-to-noise ratio of the transmitting power of the base station to white noise is p s /N 0 20dB, the signal to white noise ratio P of the first terminal transmitting signal 1 /N 0 May be 0dB, the second terminal transmits a signal to white noise signalNoise ratio P 2 /N 0 May be 10dB, the channel gain h between the base station and the first terminal d1 And channel gain h between base station and second terminal d2 Difference Δh= |h d2 -h d1 The I can be 0.1-4.6, and the gain effect of the transmission rate is delta R= |R-R M I, wherein R M For the transmission rate when the base station directly transmits the first information to the target terminal in the prior art, the influence of the channel difference between the first terminal and/or the second terminal on the transmission rate can be obtained as shown in fig. 4.
In fig. 4, the first of the two curves is the effect curve of the channel difference on the transmission rate at the time of forward decoding, and the second is the effect curve of the channel difference on the transmission rate at the time of backward decoding. The gain effects of the two curves all show a growing trend along with the increase of the channel gap, wherein the gain of the backward decoding is larger than the gain of the forward decoding, the gain effects are obvious, when the channel difference is in the range of 0-2, the gain effects of the two curves grow rapidly along with the increase of the channel gap, and when the channel difference is in the range of 2-4.5, the gain effects of the two curves tend to be gentle along with the increase of the channel gap, and the increasing speed is reduced.
The four transmission rate curves all have a growing trend along with the increase of the signal-to-noise ratio of the base station transmitting signal to white noise, namely the higher the signal-to-noise ratio of the base station transmitting signal to white noise is, the larger the transmission rate between the base station and the first terminal and/or the second terminal is.
It can be understood that the target terminal enhances the first information after interference removal by receiving the adjusted first information, namely the second information, forwarded by the relay terminal, so that the target terminal can determine the target information sent by the base station from the first information.
Example two
The embodiment of the application also provides an information transmission method, which is applied to a relay terminal, and fig. 5 is a flowchart of a second information transmission method provided by the embodiment of the application, as shown in fig. 5, the information transmission method may include:
And S201, when the relay terminal receives the first information in the current time slot, adjusting the power of the first information to obtain the second information, wherein the first information is information multicast to the target terminal and the relay terminal by the base station.
The information transmission method provided by the embodiment of the application is suitable for a scene that the base station transmits information to the target terminal by using the relay terminal.
In the embodiment of the application, the relay terminal can be in a state of receiving information all the time, the relay terminal can also receive information in a preset time period, the relay terminal can also receive information in a time period constrained by the configuration information according to the configuration information, and the information can be determined specifically according to actual conditions, and the embodiment of the application is not limited to the information.
The first information is information multicast by the base station to the target terminal and the relay terminal.
It should be further noted that the first information may be digital information, the first information may also be analog information, and the first information may also be other information, which may be specifically determined according to the actual situation, which is not limited in the embodiment of the present application.
In the embodiment of the application, when the base station needs to multicast the first information to the target terminal and the relay terminal, the base station adds the address information of the target terminal and/or the relay terminal in the first information, and sends the first information to the target terminal and the relay terminal respectively through the address information.
It should be noted that, the base station may send first information carrying first address information of the target terminal to the target terminal, send first information carrying first address information and second address information of the relay terminal to the relay terminal, and when the relay terminal receives the first information, the relay terminal may transmit the first information after power adjustment to the target terminal according to the first address information in the first information.
Before multicasting the first information to the target terminal and the relay terminal, the base station needs to determine the target terminal and the relay terminal from the plurality of terminals, wherein the base station determines the target terminal and the relay base station, and can determine the target terminal from the plurality of terminals for the base station, and then determine the relay terminal from the plurality of terminals except the target terminal.
It should be further noted that the number of the target terminals may be one or at least one, and specifically may be determined according to actual situations, which is not limited in the embodiment of the present application. The number of relay terminals may be one or at least one, and may specifically be determined according to actual situations, which is not limited in the embodiment of the present application.
It should be further noted that, the manner of determining the target terminal by the base station may be that the base station determines the target terminal randomly from a plurality of terminals, or may be that the base station uses a terminal with the worst channel quality among a plurality of terminals as the target terminal, or the base station may determine the target terminal from a plurality of terminals by other manners, which may be specifically determined according to the actual situation, which is not limited by the embodiment of the present application.
The method for determining the relay terminal by the base station from the plurality of terminals except the target terminal may be that the base station determines the terminal with the highest channel quality from the plurality of terminals except the target terminal, and uses the terminal with the highest channel quality as the relay terminal, or that the base station randomly selects one terminal from the plurality of terminals except the target terminal, and uses the randomly selected terminal as the relay terminal, or that the base station may determine the relay terminal from the plurality of terminals except the target terminal by other methods, specifically, may determine the relay terminal according to the actual situation, which is not limited by the embodiment of the present application.
In the embodiment of the application, each of the plurality of terminals comprises a transmitting antenna and a receiving antenna, i.e. each terminal can utilize the transmitting antenna to transmit signals and can also utilize the receiving antenna to receive signals.
In the embodiment of the application, when a plurality of terminals are two, namely two terminals, when the base station needs to multicast the first information to the two terminals, the two terminals can communicate in a simultaneous same-frequency full duplex communication mode so as to improve the information transmission rate of each terminal of the two terminals.
When the second terminal receives the first information, the second terminal adjusts the first information to obtain second information, and forwards the second information to the first terminal, so that the first terminal can directly obtain the first information without interference, and can also receive the adjusted first information, namely the second information, through the relay terminal, and the second information is utilized to enhance the first information without interference so as to obtain target information sent by the base station.
In the embodiment of the present application, the process of the relay terminal adjusting the power of the first information to obtain the second information may be: and the relay terminal increases the power of the first information to obtain the preprocessing information.
The relay terminal adjusts the power of the first information, specifically, the relay terminal increases the power of the first information.
In the embodiment of the present application, the manner in which the relay terminal increases the power of the first information may increase the voltage of the first signal for the relay terminal, may increase the number of transmitting antennas for transmitting the first information for the relay terminal, may increase the power of the first information by increasing the power of the internal power amplifier circuit for the relay terminal, may also increase the power of the information by other manners, and may specifically be determined according to the actual situation.
In the embodiment of the application, after the relay terminal increases the power of the first information to obtain the preprocessing information, the relay terminal can remove the interference information in the preprocessing information to obtain the second information.
In the embodiment of the application, when the relay terminal receives the first information in the current time slot, other interference information, such as the information sent to the relay terminal by the base station in the previous time slot, some self-interference information generated by the relay terminal in the next time slot, and the like, can be received at the same time, and when the interference information is mixed in the first information, the relay terminal needs to perform interference elimination processing on the first information, so as to obtain interference elimination first information.
In the embodiment of the present application, the manner of removing the interference information in the pre-processing information by the relay terminal may be filtering the pre-processing information, removing the interference information in the pre-processing information, or may be other manners of removing the interference information in the pre-processing information, which may be specifically determined according to the actual situation, and the embodiment of the present application is not limited to this.
It should be noted that the interference information includes information that the relay terminal receives the base station transmitted in a time slot previous to the previous time slot, and interference information generated by the relay terminal in the current time slot.
In the embodiment of the present application, the process of removing the interference information in the pre-processing information by the relay terminal to obtain the second information may be: and the relay terminal receives the first interference information sent by the base station in the last time slot, and eliminates the first interference information from the preprocessing information to obtain the first preprocessing information.
The first interference information is information that the relay terminal receives the base station transmission in the last time slot.
In the embodiment of the application, the second interference information in the to-be-processed interference information can be removed by the target terminal in a channel filtering manner, the second interference information in the to-be-processed interference information can be removed by a digital self-interference elimination manner, and other interference removing manners can be also used, and the method and the device can be specifically determined according to actual conditions, and the embodiment of the application is not limited to the method and the device.
In the embodiment of the application, after the relay terminal removes the first interference information from the preprocessing information to obtain the first preprocessing information, the relay terminal determines the second interference information generated by the current time slot and removes the second interference information from the first preprocessing information to obtain the second information.
The second interference information is interference information generated by the relay terminal in the current time slot.
The method of determining the second interference information generated by the current time slot by the relay terminal may be that the relay terminal compares the information generated by the current time slot with the first preprocessing information, uses the information identical to the information generated by the current time slot in the first preprocessing information as the second interference information, and the relay terminal may also compare the time slot information phase of the information generated by the current time slot with the first phase of the first preprocessing information, and uses the information corresponding to the first phase identical to the time slot information phase in the first preprocessing information as the second interference information.
In the embodiment of the application, the manner of eliminating the second interference information in the first preprocessing information by the relay terminal can be the manner of eliminating the first interference information in the preprocessing information by utilizing the channel filtering, can also be the manner of eliminating the second interference information in the first preprocessing information by utilizing the digital self-interference elimination, can also be the manner of eliminating the other interference, and can be specifically determined according to the actual situation.
S202, in the next time slot, second information is sent to the target terminal according to first address information in the second information, wherein the first address information is the address information of the target terminal.
In the embodiment of the present application, the first information includes first address information, that is, the second information obtained after the relay terminal adjusts the power of the first information also includes the first address information.
The first address information is address information of the target terminal.
It can be understood that when the relay terminal receives the first information multicast by the base station, the relay terminal sends the first information, namely the second information, after power adjustment to the target terminal, and when the target terminal does not receive the target information sent by the base station, the target terminal can also receive the first information through the relay terminal, and obtain the target information through the second information sent by the relay terminal and the first information received by the target base station, so that the target terminal does not need to be retransmitted by the base station, the transmission rate of the target terminal when the target terminal transmits the information is improved, and the channel capacity of the target terminal is improved.
Example III
Based on the inventive concept together with the embodiments, the embodiments of the present application provide a target terminal 1, corresponding to an information transmission method applied in the target terminal; fig. 6 is a schematic diagram of a composition structure of a target terminal according to an embodiment of the present application, where the target terminal 1 may include:
the interference elimination unit 11 is configured to receive first information in a current time slot, and perform interference elimination processing on the first information to obtain interference elimination first information, where the first information is information multicast by a base station to the target terminal and a relay terminal;
and the receiving unit 12 is configured to receive second information in a next previous time slot, and enhance the interference-removed first information by using the second information, so as to determine target information sent by the base station from the first information, where the second information is information sent to the target terminal after the relay terminal adjusts the first information.
In some embodiments of the present application, the interference removing unit 11 is specifically configured to receive, in a last time slot, first interference information sent by the base station, and reject the first interference information from the first information, so as to obtain interference information to be processed; and determining second interference information generated by the current time slot, and removing the second interference information from the interference information to be processed to obtain the interference-removing first information.
In some embodiments of the present application, the target terminal further includes an adding unit 13, where the adding unit 13 is configured to add the second information to the interference-removed first information, so as to enhance the interference-removed first information.
It should be noted that, in practical applications, the interference cancellation unit 11, the receiving unit 12, and the adding unit 13 may be implemented by the first processor 14 on the target terminal 1, specifically, a CPU (Central Processing Unit ), an MPU (microprocessor), a DSP (Digital Signal Processing, digital signal processor), a field programmable gate array (FPGA, fieldProgrammable gateway array), or the like; the above-described data storage may be implemented by the first memory 15 on the target terminal 1.
The embodiment of the present application further provides a target terminal 1, as shown in fig. 7, where the target terminal 1 includes: a first processor 14, a first memory 15, and a first communication bus 16, the first memory 15 being in communication with the first processor 14 through the first communication bus 16, the first memory 15 storing a program executable by the first processor 14, the program, when executed, performing the information transmission method as described above through the first processor 14.
In practical applications, the first Memory 15 may be a volatile Memory (RAM), such as a Random-Access Memory (RAM); or a nonvolatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD) or a Solid State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the first processor 14.
An embodiment of the present invention provides a computer-readable storage medium having thereon a computer program which, when executed by the first processor 14, implements the information transmission method applied in a target terminal as described above.
It can be understood that the target terminal enhances the first information after interference removal by receiving the adjusted first information, namely the second information, forwarded by the relay terminal, so that the target terminal can determine the target information sent by the base station from the first information.
Example IV
Based on the same inventive concept as the second embodiment, the embodiment of the present application provides a relay terminal 2, corresponding to an information transmission method applied to the relay terminal; fig. 8 is a schematic diagram of a composition structure of a relay terminal according to an embodiment of the present application, where the relay terminal 2 may include:
an adjusting unit 21, configured to adjust, when the relay terminal receives first information in a current time slot, power of the first information to obtain second information, where the first information is information multicast by a base station to a target terminal and the relay terminal;
and a sending unit 22, configured to send, in a next time slot, the second information to a target terminal according to first address information in the second information, where the first address information is address information of the target terminal.
In some embodiments of the present application, the adjusting unit 21 is specifically configured to increase the power of the first information to obtain the preprocessed information; and removing interference information in the preprocessing information to obtain the second information.
In some embodiments of the present application, the adjusting unit 21 is specifically configured to receive, in a previous time slot, first interference information sent by the base station, and reject the first interference information from the pre-processing information, so as to obtain first pre-processing information; and determining second interference information generated by the current time slot, and removing the second interference information from the first preprocessing information to obtain the second information.
It should be noted that, in practical applications, the adjusting unit 21 and the transmitting unit 22 may be implemented by the second processor 23 on the relay terminal 2, specifically, a CPU (Central Processing Unit ), an MPU (Microprocessor Unit, microprocessor), a DSP (Digital Signal Processing, digital signal processor), a field programmable gate array (FPGA, field Programmable GateArray), or the like; the above data storage may be implemented by the second memory 24 on the relay terminal 2.
The embodiment of the present invention further provides a relay terminal 2, as shown in fig. 9, where the relay terminal 2 includes: a second processor 23, a second memory 24, and a second communication bus 25, the second memory 24 being in communication with the second processor 23 via the second communication bus 25, the second memory 24 storing a program executable by the second processor 23, the program, when executed, performing the information transmission method described above by the second processor 23.
In practical applications, the second Memory 24 may be a volatile Memory (RAM), such as a Random-Access Memory (RAM); or a nonvolatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD) or a Solid State Drive (SSD); or a combination of memories of the above kind and providing instructions and data to the second processor 23.
An embodiment of the present invention provides a computer-readable storage medium having thereon a computer program which, when executed by the second processor 23, implements the information transmission method applied to the relay terminal as described above.
It can be understood that when the relay terminal receives the first information multicast by the base station, the relay terminal sends the first information, namely the second information, after power adjustment to the target terminal, and when the target terminal does not receive the target information sent by the base station, the target terminal can also receive the first information through the relay terminal, and obtain the target information through the second information sent by the relay terminal and the first information received by the target base station, so that the target terminal does not need to be retransmitted by the base station, the transmission rate of the target terminal when the target terminal transmits the information is improved, and the channel capacity of the target terminal is improved.
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, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is 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.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. An information transmission method, applied to a target terminal, comprising:
receiving first information in a current time slot, and performing interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast to the target terminal and the relay terminal by a base station;
and receiving second information in the next time slot, adding the second information into the interference-free first information to strengthen the interference-free first information so as to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the power of the first information is improved by the relay terminal to obtain preprocessing information and interference information in the preprocessing information is removed.
2. The method of claim 1, wherein the performing the interference cancellation process on the first information to obtain interference cancelled first information comprises:
receiving first interference information sent by the base station in the last time slot, and removing the first interference information from the first information to obtain interference information to be processed;
and determining second interference information generated by the current time slot, and removing the second interference information from the interference information to be processed to obtain the interference-removing first information.
3. An information transmission method, applied to a relay terminal, comprising:
when the relay terminal receives the first information in the current slot,
the power of the first information is increased, and preprocessing information is obtained;
removing interference information in the preprocessing information to obtain second information; the first information is information multicast to a target terminal and the relay terminal by the base station;
in the next time slot, sending the second information to the target terminal according to the first address information in the second information, wherein the first address information is the address information of the target terminal; the target terminal adds the second information into the interference-free first information, and the interference-free first information is enhanced to determine target information sent by the base station from the first information; the first interference information is obtained by performing interference elimination processing on the first information received in the current time slot by the target terminal.
4. The method of claim 3, wherein the removing the interference information from the pre-processed information to obtain the second information comprises:
receiving first interference information sent by the base station in the last time slot, and removing the first interference information from the preprocessing information to obtain first preprocessing information;
and determining second interference information generated by the current time slot, and removing the second interference information from the first preprocessing information to obtain the second information.
5. A target terminal, the target terminal comprising:
the interference elimination unit is used for receiving first information in the current time slot, and carrying out interference elimination processing on the first information to obtain interference elimination first information, wherein the first information is information multicast to the target terminal and the relay terminal by the base station;
and the receiving unit is used for receiving second information in the next time slot, adding the second information into the interference-free first information to strengthen the interference-free first information so as to determine target information sent by the base station from the first information, wherein the second information is information sent to the target terminal after the power of the first information is improved by the relay terminal to obtain preprocessing information, and removing interference information in the preprocessing information.
6. A relay terminal, the relay terminal comprising:
the adjusting unit is used for increasing the power of the first information when the relay terminal receives the first information in the current time slot to obtain preprocessing information; removing interference information in the preprocessing information to obtain second information; the first information is information multicast to a target terminal and the relay terminal by the base station;
a sending unit, configured to send, in a next time slot, the second information to the target terminal according to first address information in the second information, where the first address information is address information of the target terminal; the target terminal adds the second information into the interference-free first information, and the interference-free first information is enhanced to determine target information sent by the base station from the first information; the first interference information is obtained by performing interference elimination processing on the first information received in the current time slot by the target terminal.
7. A target terminal, the target terminal comprising:
a first memory, a first processor and a first communication bus, the first memory being in communication with the first processor via the first communication bus, the first memory storing a program for information transfer executable by the first processor, the program for information transfer, when executed, performing the method of claim 1 or 2 by the first processor.
8. A relay terminal, the relay terminal comprising:
a second memory, a second processor, and a second communication bus, the second memory being in communication with the second processor through the second communication bus, the second memory storing a program for information transfer executable by the second processor, the program for information transfer, when executed, performing the method of claim 3 or 4 by the second processor.
9. A storage medium having stored thereon a computer program for application to a target terminal, characterized in that the computer program, when executed by a first processor, implements the method of claim 1 or 2.
10. A storage medium having stored thereon a computer program for use in a relay terminal, characterized in that the computer program, when executed by a second processor, implements the method of claim 3 or 4.
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| CN102082632A (en) * | 2010-12-28 | 2011-06-01 | 西南交通大学 | Multi-user multi-relay downlink transmission method in multi-input multi-output cellular communication system |
| CN106233639B (en) * | 2015-02-05 | 2019-10-25 | 华为技术有限公司 | Data transmission method and device |
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| KR101530201B1 (en) * | 2009-03-03 | 2015-06-19 | 삼성전자주식회사 | Signal transmission method and system for transmitting signal by using interference control method and/or transmission power control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082632A (en) * | 2010-12-28 | 2011-06-01 | 西南交通大学 | Multi-user multi-relay downlink transmission method in multi-input multi-output cellular communication system |
| CN106233639B (en) * | 2015-02-05 | 2019-10-25 | 华为技术有限公司 | Data transmission method and device |
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