CN108243453A - Downlink data transmission method and device - Google Patents
Downlink data transmission method and device Download PDFInfo
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- CN108243453A CN108243453A CN201611201937.0A CN201611201937A CN108243453A CN 108243453 A CN108243453 A CN 108243453A CN 201611201937 A CN201611201937 A CN 201611201937A CN 108243453 A CN108243453 A CN 108243453A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention discloses a kind of downlink data transmission method and devices, are related to wireless communication field.This method includes:The descending control signaling of base station is received, obtains the reference modulation system for user;Detect actual modulated mode of the base station for the transmitting signal of user;According to modulation system and actual modulated mode is referred to, judgement user is scheduled as NOMA transmission modes or OMA transmission modes;The signal received according to judgement result treatment user.Method and apparatus proposed by the present invention realize the dynamic self-adapting switching of NOMA and OMA, without increasing new descending control signaling, reduce control signaling expense.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of downlink data transmission method and device.
Background technology
In the 5G epoch, user's transmission rate requirements are constantly promoted, and industry is promoted to start to explore further promotion spectrum efficiency
New Wireless Technologies.Wherein, technology is in theory by NOMA (Non-Orthogonal Multiple Access, non-orthogonal multiple)
Capacity circle of uplink and downlink channel can be reached, therefore receive the great attention of domestic and international industrial circle;Moreover, the place of terminal and base station
Reason ability is increasingly enhanced the extensive use for also promoting NOMA in 5G.
It is orthogonal that NOMA technologies obtain the standard of multi-user data by deleting interference signal in receiving terminal.Therefore, to obtain
The gain of NOMA is obtained, user first must know whether to exist the interference for dispatching user altogether, then decide whether to carry out interference use
The demodulation at family is deleted, and finally could correctly decode the useful signal of itself.However, the prior art uses the side of dynamic signaling
Formula informs user's above- mentioned information, needs frequently to increase new descending control signaling, causes control signaling expense very big.
Invention content
The inventor of invention has found above-mentioned problems of the prior art, and therefore at least one in described problem
A problem proposes a kind of new technical solution.
It is an object of the present invention to provide a kind of downlink data transmission technical solutions, can reduce control signaling expense.
According to the first aspect of the invention, a kind of downlink data transmission method is provided, including:Receive the downlink control of base station
Signaling processed obtains the reference modulation system for user;Detect practical tune of the base station for the transmitting signal of the user
Mode processed;Modulation system and the actual modulated mode are referred to according to described, judges that the user is scheduled as NOMA transmission sides
Formula or OMA (Orthogonal Multiple Access, orthogonal multiple access) transmission mode;It is used according to judgement result treatment
The signal that family receives.
Optionally, this method further includes:End receive base station send semi-static RRC (Radio Resource Control,
Wireless heterogeneous networks) signaling, obtain the instruction that user enters NOMA patterns.
Optionally, it is described to refer to modulation system and the actual modulated mode according to described, judge that the user is scheduled
Include for NOMA transmission modes or OMA transmission modes:If described identical with the actual modulated mode with reference to modulation system,
Then judge that the user is scheduled as OMA transmission modes in current subframe and current resource block;Otherwise, it is determined that the user exists
NOMA transmission modes are scheduled as in current subframe and current resource block.
Optionally, the signal that the user according to judgement result treatment receives includes:If the judgement result
OMA transmission modes are scheduled as the user, then directly decode the signal that the user receives;If the judgement result
NOMA transmission modes are scheduled as the user, then first demodulate and delete the signal that the base station is sent to remote subscriber, so
The signal that the user receives is decoded afterwards.
Optionally, the terminal of the remote subscriber using the base station be sent to the signal of the user as interference at
Reason, and the remote subscriber is received by QPSK (Quadrature Phase Shift Keyin, quadrature phase shift keying) mode
To signal be demodulated.
Optionally, the reference modulation system for the user includes:It is described to refer to modulation methods according to channel condition
Formula uses QPSK, 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) or 64QAM modulation methods
Formula.
Optionally, the base station includes the actual modulated mode of the transmitting signal of the user:If the user
OMA transmission modes are scheduled as, then the actual modulated mode is identical with the reference modulation system;If the user is adjusted
It spends for NOMA transmission modes, then the base station sends the synthesis planisphere of the user and remote subscriber.
Optionally, the base station sends the user and the synthesis planisphere of the remote subscriber includes:If the ginseng
Modulation system is examined as QPSK, then the actual modulated mode corresponds to 16QAM;If the reference modulation system is 16QAM tune
Mode processed, then the actual modulated mode correspond to 64QAM;If the reference modulation system is 64QAM modulation systems, institute
It states actual modulated mode and corresponds to 256QAM.
According to another aspect of the present invention, a kind of downlink data transmission device is provided, including:Modulation system obtains single
Member for detecting the descending control signaling of base station, obtains the reference modulation system for user, and detect the base station for institute
State the actual modulated mode of the transmitting signal of user;Transmission mode identifying unit, for according to the modulation system acquiring unit
What is obtained is described with reference to modulation system and the actual modulated mode, judges that the user is scheduled as NOMA transmission modes still
OMA transmission modes;Receipt signal processing unit, for handling the use according to the judging result of the transmission mode identifying unit
The signal that family receives.
Optionally, which further includes:Semi-static signaling receiving unit, for receiving the semi-static of the base station transmission
RRC signaling obtains the instruction that the user enters NOMA patterns.
Optionally, the transmission mode identifying unit includes:Modulation system contrast subunit, for according to the modulation methods
The acquisition of formula acquiring unit is as a result, whether comparison is described identical with reference to modulation system and the actual modulated mode;Transmission mode
Determination subelement, if the comparing result for the modulation system contrast subunit is identical, it is determined that the user is working as
OMA transmission modes are scheduled as in preceding subframe and current resource block;Otherwise, it determines the user is in current subframe and Current resource
NOMA transmission modes are scheduled as in block.
Optionally, the receipt signal processing unit includes:NOMA signal processing subelements, if for the transmission side
The judgement result of formula identifying unit is scheduled as NOMA transmission modes for the user in current subframe and current resource block, then
The signal that the base station is sent to remote subscriber is first demodulated and deleted, then decodes the signal that the user receives;OMA signals
Subelement is handled, if the judgement result for the transmission mode identifying unit is provided for the user in current subframe and currently
OMA transmission modes are scheduled as in source block, then directly decode the signal that the user receives.
Optionally, which further includes:Remote subscriber signal processing unit, for the base station to be sent to the user
Signal handled as interference, and the signal received by quadrature phase shift keying QPSK modes to the remote subscriber carries out
Demodulation.
According to another aspect of the invention, a kind of downlink data transmission device is also provided, including:Memory;And coupling
To the processor of the memory, the processor is configured as, based on the instruction being stored in the memory devices, performing
Downlink data transmission method as described above.
An advantage of the present invention is that terminal is by obtaining for the reference modulation system of user and base station for user
The actual modulated mode of transmitting signal judge which kind of transmission mode user is scheduled as, realize the dynamic of NOMA and OMA
Adaptive switching, without increasing new descending control signaling, so as to reduce control signaling expense.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to solve together with the description
Release the principle of the present invention.
With reference to attached drawing, according to following detailed description, the present invention can be more clearly understood, wherein:
Fig. 1 shows the schematic diagram of an application scenarios of downlink data transmission method according to the present invention.
Fig. 2 shows the flow charts of one embodiment of downlink data transmission method according to the present invention.
Fig. 3 shows the flow chart of another embodiment of downlink data transmission method according to the present invention.
Fig. 4 shows the flow chart of another embodiment of downlink data transmission method according to the present invention.
Fig. 5 shows the structure chart of one embodiment of downlink data transmission device according to the present invention.
Fig. 6 shows the structure chart of another embodiment of downlink data transmission device according to the present invention.
Fig. 7 shows the structure chart of another embodiment of downlink data transmission device according to the present invention.
Fig. 8 shows the structure chart of the further embodiment of downlink data transmission device according to the present invention.
Fig. 9 shows the structure chart of the further embodiment of downlink data transmission device according to the present invention.
Figure 10 shows the structure chart of one embodiment of downlink data transmission device according to the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that:Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Simultaneously, it should be appreciated that for ease of description, the size of the various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that:Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need to that it is further discussed.
Fig. 1 shows the schematic diagram of an application scenarios of downlink data transmission method according to the present invention.
As shown in Figure 1, base station 103 provides service for the user 101 in cell and remote subscriber 102 simultaneously.Wherein, blank
Frequency resource block represent in the frequency resource block in the burst that user 101 is scheduled as OMA transmission modes, i.e. base station
It only scheduled user 101;It indicates in the frequency resource block of the frequency resource block expression of oblique line in the burst, 101 quilt of user
NOMA transmission modes are scheduling to, i.e. base station 103 scheduled user 101 and remote subscriber 102 on same time-frequency null resource.If with
Family 101 is scheduled as NOMA transmission modes, then must know whether to exist the interference for dispatching user altogether, then decide whether to carry out
The demodulation of user is interfered to delete, and then could correctly decode the useful signal of itself.
Fig. 2 shows the flow charts of one embodiment of downlink data transmission method according to the present invention.
As shown in Fig. 2, step 201, receives the descending control signaling of base station, obtains the reference modulation system for user.
For example, according to the channel condition of user, QPSK, 16QAM or 64QAM may be used with reference to modulation system.
Step 202, detection base station is for the actual modulated mode of the transmitting signal of user.For example, terminal can be by blind
It seizes and takes actual modulated mode of the base station for the transmitting signal of user.
In one embodiment, if user is scheduled as OMA transmission modes, actual modulated mode is with described with reference to tune
Mode processed is identical;If user is scheduled as NOMA transmission modes, base station sends the synthesis planisphere of user and remote subscriber,
I.e. if being QPSK with reference to modulation system, actual modulated mode corresponds to 16QAM;If it is 16QAM tune with reference to modulation system
Mode processed, then actual modulated mode correspond to 64QAM;If with reference to modulation system be 64QAM modulation systems, actual modulated side
Formula corresponds to 256QAM.
Step 203, according to modulation system and actual modulated mode is referred to, judgement user is scheduled as NOMA transmission modes also
It is OMA transmission modes.
Step 204, the signal received according to judgement result treatment user.
In one embodiment, before step 201 is carried out, terminal receives the semi-static RRC signaling that base station is sent, and obtains
User enters the instruction of NOMA patterns.
In above-described embodiment, terminal can be determined that user is scheduled by comparison with reference to modulation system and actual modulated mode
For which kind of transmission mode, without increasing any new descending control signaling;And terminal is informed in base station using semi-static RRC signaling
Into NOMA patterns, without the dynamic control signaling of physical layer, so as to reduce signaling overheads.
Fig. 3 shows the flow chart of another embodiment of downlink data transmission method according to the present invention.
As shown in figure 3, step 301, terminal receives the semi-static RRC signaling that base station is sent, and obtains user and enters NOMA moulds
The instruction of formula.
Step 302, the descending control signaling of base station is received, obtains the reference modulation system for user.
Step 303, detection base station is for the actual modulated mode of the transmitting signal of user.
Step 304, judge whether identical with reference to modulation system and actual modulated mode.If identical, judge that user exists
OMA transmission mode (steps 305) are scheduled as in current subframe and current resource block;If it is different, then judgement user is current
NOMA transmission mode (steps 306) are scheduled as in subframe and current resource block.
Step 307, the signal received according to judgement result treatment user.
In one embodiment, user is in NOMA or OMA transmission modes, and base station is sent to by remote subscriber
The signal of user is handled as interference, and the signal that oneself is received is demodulated by QPSK modes, i.e., for distal end
For user, in which kind of transmission mode, its signal processing flow is constant, without defining new signaling and receiver.
In above-described embodiment, method proposed by the present invention is according to the similarities and differences with reference to modulation system and actual modulated mode come real
The adaptive switching at runtime of existing NOMA/OMA, without increasing any new descending control signaling, reduces signaling overheads.
Fig. 4 shows the flow chart of another embodiment of downlink data transmission method according to the present invention.
As shown in figure 4, step 401, terminal receives the semi-static RRC signaling that base station is sent, and obtains user and enters NOMA moulds
The instruction of formula.
Step 402, the descending control signaling of base station is received, obtains the reference modulation system for user.
Step 403, detection base station is for the actual modulated mode of the transmitting signal of user.
Step 404, judge whether identical with reference to modulation system and actual modulated mode.If identical, judge that user exists
OMA transmission mode (steps 405) are scheduled as in current subframe and current resource block;If it is different, then judgement user is current
NOMA transmission mode (steps 406) are scheduled as in subframe and current resource block.
Step 407, if user is scheduled as OMA transmission modes, the signal that user receives directly is decoded.
Step 408, it if user is scheduled as NOMA transmission modes, first demodulates and deletes base station and be sent to remote subscriber
Signal, then decode the signal that receives of user.
In one embodiment, since user is scheduled as NOMA transmission modes, so base station is sent to user and distal end
There is superposition on power domain in the signal of user.The channel condition of remote subscriber is poor, therefore base station is sent to remote subscriber
The power of signal is higher than the power for being sent to the signal of user.Therefore user must demodulate, decode and reconstruct base station transmission first
It to the signal of remote subscriber, is then deleted, base station is finally decoded under the conditions of preferable Signal to Interference plus Noise Ratio is sent to user's
Signal.
In above-described embodiment, method proposed by the present invention is by obtaining base station to the reference modulation system of user and practical tune
Mode processed realizes the adaptive switching at runtime of NOMA/OMA, and the signal received is handled according to transmission mode, without increasing
Any new descending control signaling, reduces signaling overheads.
Fig. 5 shows the structure chart of one embodiment of downlink data transmission device according to the present invention.
As shown in figure 5, the device includes:Modulation system acquiring unit 51, transmission mode identifying unit 52 and reception signal
Processing unit 53.
The descending control signaling that modulation system acquiring unit 52 detects base station obtains the reference modulation system for being directed to user, example
Such as, according to the channel condition of user, base station may use QPSK, 16QAM or 64QAM to be used as with reference to modulation system;And detect base
The actual modulated mode stood for the transmitting signal of user, for example, when user is dispatched in base station using single user is orthogonal, actual modulated
Mode is with reference to modulation system, and when dispatching user using multi-user is nonopiate, then base station sends the synthesis planisphere of multi-user;
The reference modulation system and actual modulated mode that transmission mode identifying unit 53 is obtained according to modulation system acquiring unit 52, judgement
User is scheduled as NOMA transmission modes or OMA transmission modes in current subframe and current resource block;Receive signal processing
The signal that unit 54 is received according to the judging result of transmission mode identifying unit processing user.
In one embodiment, which further includes:Semi-static signaling receiving unit 60.
As shown in fig. 6, semi-static signaling receiving unit 60 receives the semi-static RRC signaling that base station is sent, obtain user into
Enter the instruction of NOMA patterns.
In above-described embodiment, device proposed by the present invention is by the comparison of transmission mode identifying unit with reference to modulation system and reality
Which kind of transmission mode border modulation system, judgement user are scheduled as, without increasing any new descending control signaling;And pass through
Semi-static signaling receiving unit receives semi-static RRC signaling to know that terminal enters NOMA patterns, the dynamic control without physical layer
Signaling processed, so as to reduce signaling overheads.
Fig. 7 shows the structure chart of another embodiment of downlink data transmission device according to the present invention.
As shown in fig. 7, the device includes:Semi-static signaling receiving unit 60, modulation system acquiring unit 51, transmission mode
Identifying unit 72 and receipt signal processing unit 53.Wherein, transmission mode identifying unit 72 includes:Modulation system contrast subunit
721 and transmission mode determination subelement 722.Wherein, semi-static signaling receiving unit 60, modulation system acquiring unit 51 and reception
The function of signal processing unit 53 is referred to the corresponding description of above-described embodiment, no longer describes herein for brevity.
Modulation system contrast subunit 721 is according to the acquisition of modulation system acquiring unit 51 as a result, comparison refers to modulation methods
Whether formula and actual modulated mode are identical;If the comparing result of modulation system contrast subunit 721 is identical, transmission mode
Determination subelement 722 determines that user is scheduled as OMA transmission modes in current subframe and current resource block;Otherwise, it determines with
Family is scheduled as NOMA transmission modes in current subframe and current resource block.
In above-described embodiment, device proposed by the present invention is according to the similarities and differences with reference to modulation system and actual modulated mode come real
The adaptive switching at runtime of existing NOMA/OMA, without increasing any new descending control signaling, reduces signaling overheads.
Fig. 8 shows the structure chart of the further embodiment of downlink data transmission device according to the present invention.
As shown in figure 8, the device includes:Semi-static signaling receiving unit 60, modulation system acquiring unit 51, transmission mode
Identifying unit 72 and receipt signal processing unit 83.Wherein, transmission mode identifying unit 72 includes:Modulation system contrast subunit
721 and transmission mode determination subelement 722;Receipt signal processing unit 83 includes:NOMA signal processings subelement 831, OMA letters
Number processing subelement 832.Wherein, semi-static signaling receiving unit 60, modulation system acquiring unit 51, modulation system comparison are single
The function of member 721 and transmission mode determination subelement 722 is referred to the corresponding description of above-described embodiment, for brevity herein
No longer describe.
If the judgement result of the transmission mode identifying unit 72 quilt in current subframe and current resource block for user
NOMA transmission modes are scheduling to, then NOMA signal processings subelement 831 first demodulates and delete the letter that base station is sent to remote subscriber
Number, the signal that receives of user is then decoded, for example, base station is using the near-far interference between each user, in transmitting terminal by each user
Signal carry out power domain superposition, and the power of user is less than remote subscriber, therefore can be deleted by serial interference in receiving terminal
The signal of division different user first demodulates, decodes and reconstruct the signal of remote subscriber, is then deleted, so compared with
The signal of user is decoded under the conditions of good Signal to Interference plus Noise Ratio;If the judgement result of transmission mode identifying unit 72 is user current
OMA transmission modes are scheduled as in subframe and current resource block, then OMA signal processings subelement 832 directly decodes user's reception
The signal arrived.
In one embodiment, which further includes remote subscriber signal processing unit 94.
Although as shown in figure 9, there are the signal interference that base station is transferred to near-end user in the reception signal of remote subscriber,
It is that the power that base station is transferred to near-end user signal is less than the signal power that base station is transferred to remote subscriber, and distal end will not be used
Family processing receives signal and apparent performance is brought to influence, and therefore, base station is sent to proximal end by remote subscriber signal processing unit 94
The signal of user is handled as interference, and the signal that remote subscriber receives is carried out by quadrature phase shift keying QPSK modes
Demodulation.
In above-described embodiment, device proposed by the present invention is by obtaining base station to the reference modulation system of user and practical tune
Mode processed realizes the adaptive switching at runtime of NOMA/OMA, and the signal received is handled according to transmission mode, without increasing
Any new descending control signaling, reduces signaling overheads.
Figure 10 shows the structure chart of one embodiment of downlink data transmission device according to the present invention.
As shown in Figure 10, the device 100 of the embodiment includes:Memory 110 and the processing for being coupled to the memory 110
Device 120, processor 120 are configured as the instruction based on storage in the memory 110, perform any one embodiment in the present invention
In downlink data transmission method.
Wherein, memory 110 is such as can include system storage, fixed non-volatile memory medium.System stores
Device is such as being stored with operating system, application program, Boot loader (Boot Loader), database and other programs.
Those skilled in the art should be understood that the embodiment of the present invention can be provided as method, system or computer journey
Sequence product.Therefore, in terms of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware
The form of embodiment.Moreover, the calculating for wherein including computer usable program code in one or more can be used in the present invention
Machine can use the meter implemented on non-transient storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of calculation machine program product.
So far, downlink data transmission method and device according to the present invention is described in detail.In order to avoid masking originally
The design of invention does not describe some details known in the field.Those skilled in the art as described above, completely may be used
To understand how to implement technical solution disclosed herein.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for the method
Merely to illustrate, the step of method of the invention, is not limited to sequence described in detail above, special unless otherwise
It does not mentionlet alone bright.In addition, in some embodiments, the present invention can be also embodied as recording program in the recording medium, these programs
Including being used to implement machine readable instructions according to the method for the present invention.Thus, the present invention also covering stores to perform basis
The recording medium of the program of the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (14)
1. a kind of downlink data transmission method, which is characterized in that including:
The descending control signaling of base station is received, obtains the reference modulation system for user;
Detect actual modulated mode of the base station for the transmitting signal of the user;
Modulation system and the actual modulated mode are referred to according to described, judges that the user is scheduled as non-orthogonal multiple NOMA
Transmission mode or orthogonal multiple access OMA transmission modes;
The signal received according to user described in judgement result treatment.
2. it according to the method described in claim 1, it is characterized in that, further includes:Terminal receives the semi-static of the base station transmission
Radio resource control RRC signaling obtains the instruction that the user enters NOMA patterns.
3. according to the method described in claim 1, it is characterized in that, described adjust according to described with reference to modulation system with the reality
Mode processed judges that the user is scheduled as NOMA transmission modes or orthogonal multiple access OMA transmission modes include:
If described identical with the actual modulated mode with reference to modulation system, judge the user in current subframe and current
OMA transmission modes are scheduled as in resource block;
Otherwise, it is determined that the user is scheduled as NOMA transmission modes in current subframe and current resource block.
4. according to the method described in claim 3, it is characterized in that, what the user according to judgement result treatment received
Signal includes:
If the judgement result is scheduled as OMA transmission modes for the user, directly decode what the user received
Signal;
If the judgement result is scheduled as NOMA transmission modes for the user, first demodulates and delete the base station transmission
To the signal of remote subscriber, the signal that the user receives then is decoded.
5. it according to the method described in claim 4, it is characterized in that, further includes:The terminal of the remote subscriber is by the base station
The signal for being sent to the user is handled, and the remote subscriber is connect by quadrature phase shift keying QPSK modes as interference
The signal received is demodulated.
6. according to claim 1-5 any one of them methods, which is characterized in that the reference modulation methods for the user
Formula includes:
It is described to use QPSK, 16 quadrature amplitude modulation QAM or 64QAM modulation systems with reference to modulation system according to channel condition.
7. according to the method described in claim 6, it is characterized in that, the base station for the user transmitting signal reality
Modulation system includes:
If the user is scheduled as OMA transmission modes, the actual modulated mode is identical with the reference modulation system;
If the user is scheduled as NOMA transmission modes, the base station sends the synthesis star of the user and remote subscriber
Seat figure.
8. the method according to the description of claim 7 is characterized in that the base station sends the user and the remote subscriber
Synthesis planisphere includes:
If the reference modulation system is QPSK, the actual modulated mode corresponds to 16QAM;
If the reference modulation system is 16QAM modulation systems, the actual modulated mode corresponds to 64QAM;
If the reference modulation system is 64QAM modulation systems, the actual modulated mode corresponds to 256QAM.
9. a kind of downlink data transmission device, which is characterized in that including:
Modulation system acquiring unit for detecting the descending control signaling of base station, obtains the reference modulation system for user, and
Detect actual modulated mode of the base station for the transmitting signal of the user;
Transmission mode identifying unit, it is described with reference to modulation system and described for being obtained according to the modulation system acquiring unit
Actual modulated mode judges that the user is scheduled as NOMA transmission modes or OMA transmission modes;
Receipt signal processing unit receives for handling the user according to the judging result of the transmission mode identifying unit
Signal.
10. device according to claim 9, which is characterized in that further include:Semi-static signaling receiving unit, for receiving
The semi-static RRC signaling that base station is sent obtains the instruction that user enters NOMA patterns.
11. device according to claim 9, which is characterized in that the transmission mode identifying unit includes:
Modulation system contrast subunit, for the acquisition according to the modulation system acquiring unit as a result, comparison is described with reference to tune
Whether mode processed and the actual modulated mode are identical;
Transmission mode determination subelement, if the comparing result for the modulation system contrast subunit is identical, it is determined that
The user is scheduled as OMA transmission modes in current subframe and current resource block;Otherwise, it determines the user is in current son
NOMA transmission modes are scheduled as in frame and current resource block.
12. according to the devices described in claim 11, which is characterized in that the receipt signal processing unit includes:
NOMA signal processing subelements, if for the transmission mode identifying unit judgement result for the user current
NOMA transmission modes are scheduled as in subframe and current resource block, then first demodulates and deletes the base station and be sent to remote subscriber
Then signal decodes the signal that the user receives;
OMA signal processing subelements, if for the transmission mode identifying unit judgement result for the user current
OMA transmission modes are scheduled as in subframe and current resource block, then directly decode the signal that the user receives.
13. according to the device described in claim any one of 9-12, which is characterized in that further include:
Remote subscriber signal processing unit, the signal for the base station to be sent to the user are handled as interference,
And it is demodulated by the signal that quadrature phase shift keying QPSK modes receive the remote subscriber.
14. a kind of downlink data transmission device, which is characterized in that including:
Memory;And
The processor of the memory is coupled to, the processor is configured as based on the finger being stored in the memory devices
It enables, performs such as downlink data transmission method described in any item of the claim 1 to 8.
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WO2020029247A1 (en) * | 2018-08-10 | 2020-02-13 | Zte Corporation | Multiple access transmission configurations |
CN111417203A (en) * | 2019-01-07 | 2020-07-14 | 中国移动通信有限公司研究院 | Method, terminal and network equipment for determining uplink data transmission |
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