WO2016134525A1 - 信息传输方法、装置以及通信系统 - Google Patents

信息传输方法、装置以及通信系统 Download PDF

Info

Publication number
WO2016134525A1
WO2016134525A1 PCT/CN2015/073361 CN2015073361W WO2016134525A1 WO 2016134525 A1 WO2016134525 A1 WO 2016134525A1 CN 2015073361 W CN2015073361 W CN 2015073361W WO 2016134525 A1 WO2016134525 A1 WO 2016134525A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
resource
signal
bit information
power
Prior art date
Application number
PCT/CN2015/073361
Other languages
English (en)
French (fr)
Inventor
张健
王昕�
Original Assignee
富士通株式会社
张健
王昕�
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社, 张健, 王昕� filed Critical 富士通株式会社
Priority to PCT/CN2015/073361 priority Critical patent/WO2016134525A1/zh
Publication of WO2016134525A1 publication Critical patent/WO2016134525A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information transmission method, apparatus, and communication system for a non-orthogonal multiple access (NOMA) system.
  • NOMA non-orthogonal multiple access
  • Non-orthogonal multiple access is one of the key technologies of 5G communication systems. Its emergence is mainly to meet the higher capacity requirements of 5G and to support more terminal connections. The non-orthogonal theoretical basis lies in the non-orthogonal multiple access approach, which has been shown to achieve a larger capacity domain than orthogonal multiple access.
  • the power domain is non-orthogonal, and its representative technology, NOMA, has been included in the discussion of LTE-A Release 13.
  • NOMA technology is derived from the superposition code theory.
  • the transmitting end multiplexes the user equipment in the power domain and transmits the superimposed signal, and the power domain superposition causes the receiving end to recover the data by using SIC (Successive Interference Cancel).
  • SIC Successessive Interference Cancel
  • FIG. 1 is a schematic diagram of a NOMA transceiving signal model. Since the channel of the user equipment 2 is poor, it cannot demodulate the data s 1 of the user equipment 1 , so that s 1 is treated as interference, and s 2 is directly demodulated. Since the channel of the user equipment 1 is better, it can demodulate the data s 2 of the user equipment 2, so the s 2 is demodulated first, and then the serial interference is deleted.
  • the interference deletion process can be expressed as Under ideal conditions, the interference of s 2 can be completely removed, so that the demodulation of s 1 is completely unaffected by s 2 interference.
  • Embodiments of the present invention provide an information transmission method, apparatus, and communication system.
  • a resource element (RE, Resource Element) is used to carry a signal with higher power and power detection is performed at the receiving end, and the bit position of the resource particle can carry additional bit information to achieve the purpose of increasing throughput.
  • RE Resource Element
  • an information transmission method configured in a non-orthogonal multiple access Into the system, the information transmission method includes:
  • an information transmission apparatus which is applied to a non-orthogonal multiple access system, and the information transmission apparatus includes:
  • a first power distribution unit that allocates a signal higher than a signal on a second resource particle of the plurality of resource particles for a signal transmitted on a first one of the plurality of resource particles
  • a first resource mapping unit determining, according to first bit information in the information to be transmitted, a location of the first resource particle in the plurality of resource particles, and mapping a signal transmitted on the first resource particle to a location On the first resource particle;
  • a second power allocation unit that modulates and allocates power to the second bit information and the third bit information in the information to be transmitted;
  • a second resource mapping unit that superimposes and maps the modulated symbols onto the second resource particles
  • a signal sending unit configured to send, by the receiving end, a signal on the plurality of resource particles to a receiving end, so that the receiving end obtains, according to a location of the first resource particle where the detected higher power signal is located in the plurality of resource particles Decoding the first bit information, and obtaining the second bit information and the third bit information according to the signal on the second resource particle.
  • an information transmission method which is applied to a non-orthogonal multiple access system, and the information transmission method includes:
  • Detecting the power of the signal on the plurality of resource particles obtaining a location of the first resource particle where the higher power signal is located and a location of the second resource particle where the lower power signal is located;
  • an information transmission apparatus for a non-orthogonal multiple access system, where the information transmission apparatus includes:
  • a signal receiving unit receiving a signal on a plurality of resource particles sent by the transmitting end
  • the power detecting unit detects the power of the signal on the plurality of resource particles, and obtains a location of the first resource particle where the higher power signal is located and a location of the second resource particle where the lower power signal is located;
  • the information obtaining unit obtains first bit information according to the position of the first resource particle in the plurality of resource particles, and obtains second bit information and third bit information according to the signal on the second resource particle.
  • a communication system comprising:
  • the signal transmitted on the first resource particle of the plurality of resource particles is allocated with a higher power than the signal of the second resource particle of the plurality of resource particles; according to the first bit information in the information to be transmitted Determining a location of the first resource particle in the plurality of resource particles, and mapping a signal transmitted on the first resource particle to the first resource particle;
  • the two bits of information and the third bit of information are modulated and distributed; the modulated symbols are superimposed and mapped onto the second resource particles; and the signals on the plurality of resource particles are transmitted;
  • Receiving receiving, by the receiving end, a signal sent by the sending end, detecting power of a signal on the plurality of resource particles, obtaining a location of a first resource particle where the higher power signal is located, and a second resource where the lower power signal is located a position of the particle; obtaining first bit information according to a position of the first resource particle in the plurality of resource particles, and obtaining second bit information and third bit information according to the signal on the second resource particle.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to execute an information transmission method as described above in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an information transmission method as described above in a base station.
  • a computer readable program wherein when the program is executed in a user device, the program causes a computer to execute an information transmission method as described above in the user device.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute an information transmission method as described above in a user equipment.
  • the beneficial effects of the embodiments of the present invention are that, at the transmitting end, some resource particles carry a signal with higher power according to the bit information, and power detection is performed at the receiving end and obtained according to the position of the resource particles in the plurality of resource particles according to the higher power signal.
  • the bit information thus, it is possible to carry additional bit information through the resource particle position to achieve the purpose of increasing throughput.
  • FIG. 1 is a schematic diagram of a NOMA transceiving signal model
  • FIG. 2 is a schematic diagram of an information transmission method according to an embodiment of the present invention.
  • FIG. 3 is another schematic diagram of an information transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of RS power and data symbol power in a NOMA signal model
  • FIG. 5 is a schematic diagram of a logical structure of a transmitting end according to an embodiment of the present invention.
  • FIG. 6 is a diagram showing an example of mapping a source bit decision reference signal according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a constellation of a high power reference signal and a low power data signal according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a logical structure of a receiving end according to an embodiment of the present invention.
  • FIG. 9 is another schematic diagram of an information transmission method according to an embodiment of the present invention.
  • FIG. 10 is a diagram showing an example of source bit determining data symbol mapping according to an embodiment of the present invention.
  • FIG. 11 is another schematic diagram of an information transmission method according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of an information transmission apparatus according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a transmitting end according to an embodiment of the present invention.
  • FIG. 14 is another schematic diagram of an information transmission apparatus according to an embodiment of the present invention.
  • Figure 15 is a schematic diagram of a communication system in accordance with an embodiment of the present invention.
  • the embodiment of the invention provides an information transmission method, which is applied to a NOMA system.
  • the embodiment of the present invention will be described from the side of the transmitting end.
  • FIG. 2 is a schematic diagram of an information transmission method according to an embodiment of the present invention. As shown in FIG. 2, the information transmission method includes:
  • Step 201 The transmitting end allocates a signal higher than a signal on a second resource particle of the plurality of resource particles for a signal transmitted on a first resource particle of the plurality of resource particles;
  • Step 202 Determine, according to first bit information in the information to be transmitted, a location of the first resource particle in the multiple resource particles, and map a signal transmitted on the first resource particle to the first On the resource particle;
  • Step 203 Modulate and allocate power of first bit information and second bit information in the information to be transmitted;
  • Step 204 superimposing and mapping the modulated symbols onto the second resource particle
  • Step 205 Send the signal on the multiple resource particles to the receiving end, so that the receiving end obtains the location of the first resource particle where the detected high power signal is located in the multiple resource particles. First bit information, and obtaining the second bit information and the third bit information according to a signal on the second resource particle.
  • the sending end may be a base station, and the receiving end may be a user equipment.
  • the invention is not limited to this, For example, it is also possible to perform NOMA communication between two user equipments or perform NOMA communication between two base stations; specific equipment can be determined according to actual scenarios.
  • the transmitting end may separately perform channel coding and rate matching, and then separately perform modulation; after the modulated signals are separately allocated for power, and then Perform constellation superposition to form superposition information; then perform physical resource mapping.
  • the signal on a part of the resource particles (for example, one of the four REs) of the plurality of resource particles may be allocated higher than other resource particles according to the first bit information (for example, other ones of the four REs)
  • the power of the signal on 3 RE That is, the position of the RE with higher power in each group of REs can be determined based on the first bit information.
  • the power P1 may be allocated to the first RE of the four REs, where P1 is greater than the power P2 of the second, third, and fourth REs of the four REs. Therefore, the receiving end can perform power detection.
  • the first bit information can be obtained as “00. ".
  • the location of the first resource particle in the group of resource particles may be determined according to the first bit information, and the remaining positions in the group of resource particles are the location of the second resource particle.
  • the modulated symbols modulated for the second bit information and the third bit information may be mapped onto the second resource particle.
  • the resource particles are divided into the first resource particle and the second resource particle.
  • the present invention is not limited thereto.
  • the resource particles may be classified into two or more types according to the power.
  • the positions of two or more types of resource particles are respectively detected according to the magnitude of the power.
  • the signal transmitted on the first resource particle is a reference signal (RS), and the receiving end may perform channel estimation according to the reference signal.
  • RS reference signal
  • FIG. 3 is another schematic diagram of an information transmission method according to an embodiment of the present invention. As shown in FIG. 3, the information transmission method includes:
  • step 300 the transmitting end sends power information to the receiving end.
  • step 301 the reference signal is assigned a higher power than the signal on the second resource particle.
  • Step 302 Determine, according to the first bit information, a location of the first resource particle in each group of resource particles, and The reference signal is mapped onto the first resource particle.
  • Step 303 The transmitting end modulates the second bit information and the third bit information and allocates power.
  • Step 304 superimposing the modulated symbols to form superposition information.
  • Step 305 mapping the overlay information onto the second resource particle.
  • Step 306 Send the signals on the plurality of resource particles to the receiving end.
  • step 307 the receiving end detects the power of the signal.
  • Step 308 obtaining the location of the first resource particle where the higher power signal is located and the location of the second resource particle where the lower power signal is located.
  • Step 309 Obtain first bit information according to locations of the first resource particles in the plurality of resource particles.
  • Step 310 Obtain a reference signal according to a signal on the first resource particle.
  • Step 311 Perform channel estimation according to the reference signal.
  • Step 312 Obtain second bit information and third bit information according to signals on the second resource particle.
  • the RS position may be determined by the source bit, which may change as the source bit changes, rather than being fixed, thereby enabling additional source bit information to be carried through the RS position.
  • channel estimation performance is improved by assigning higher power to the RS symbols, so that residual interference in the NOMA serial interference deletion process can be reduced.
  • FIG. 4 is a schematic diagram of RS power and data symbol power in a NOMA signal model. As shown in FIG. 4, the power of the RE where the RS is located in the current NOMA system is the same as the power of other REs. In practical systems, due to channel estimation errors, even if the s 2 demodulation is correct, there will still be residual interference terms. Where ⁇ h 1 represents the h 1 channel estimation error.
  • the reference signal is allocated with higher power, it is advantageous to improve channel estimation accuracy, thereby reducing residual interference in the serial interference cancellation process at the receiving end.
  • FIG. 5 is a schematic diagram of a logical structure of a transmitting end according to an embodiment of the present invention.
  • the source bit 1 (second bit information) and the source bit 2 (third bit information) are independently channel-coded and modulated, and then form a NOMA superimposed constellation, wherein the power allocation module is responsible for NOMA power allocation.
  • the power distribution module also assigns a higher power than the data symbols to the reference signal.
  • the power allocation result needs to notify the receiving end in advance by signaling, so that the receiving end correctly performs channel estimation and data demodulation.
  • the source bit 3 (first bit information) is used to control the RE mapping of the reference signal, that is, the location of the reference signal is determined. RE location.
  • FIG. 6 is a diagram showing an example of a source bit decision reference signal map according to an embodiment of the present invention, showing a partial RE (in the case of 8 REs) at the time of one transmission.
  • a partial RE in the case of 8 REs
  • FIG. 6 it is assumed that every 4 REs are a group, and each group contains one reference signal, and the reference signal can occupy any RE position in the group, and the specific position is determined by 2 bits in the source bit 3.
  • the reference signal will occupy the first and third RE positions of the two sets of REs, respectively. Since the reference signal has a higher power than the data symbol, the receiving end can determine the reference signal position by detecting the power level, and can also obtain 2 bits carried by the reference signal position, thereby recovering the source bit 3.
  • FIG. 7 is a schematic diagram of a constellation of a high power reference signal and a low power data signal according to an embodiment of the present invention.
  • FIG. 7 takes the QPSK modulation mode as the source bit 1 and the source bit 2 as an example, and gives a constellation indication of the reference signal and the data symbol.
  • the inner circle hollow circle represents the NOMA superimposed constellation, including the superposed 16 NOMA constellation points
  • the outer circle solid circle represents the reference signal constellation (the reference signals in the LTE standard all use the QPSK constellation). Since the reference signal is assigned a higher power and the reference signal is in the QPSK modulation mode, each constellation point of the reference signal has a larger modulus value than the NOMA constellation point, thereby facilitating power detection at the receiving end.
  • FIG. 8 is a schematic diagram of a logical structure of a receiving end according to an embodiment of the present invention. As shown in FIG. 8, the receiving end can detect the power in each group of REs, take out the symbol at the high power RE as a reference signal, use it as a channel estimation, and recover the source bit 3 according to the position information of the reference signal.
  • the receiving end performs demapping on the RE position where the reference signal is removed, extracts the data symbol, and then demodulates and decodes the source bit 2, then deletes the influence of the source bit 2, and continues to demodulate and decode the source bit. 1.
  • the signal on the second resource particle is a data symbol
  • the receiving end can obtain more information according to the data symbol.
  • the data symbol may be used to transmit superposition information formed by the first bit information and the second bit information, or superposition information formed by the fourth bit information and the fifth bit information.
  • FIG. 9 is another schematic diagram of an information transmission method according to an embodiment of the present invention. As shown in FIG. 9, the information transmission method includes:
  • step 900 the transmitting end sends power information to the receiving end.
  • step 901 the transmitting end modulates the fourth bit information and the fifth bit information and allocates power.
  • Step 902 superimposing the modulated symbols modulated by the fourth bit information and the fifth bit information to form first superimposed information.
  • Step 903 Determine, according to the first bit information, a location of the first resource particle in each group of resource particles, and map the first overlay information to the first resource particle; wherein, the power of the signal on the first resource particle is higher than the second The power of the signal on the resource particle.
  • step 904 the transmitting end modulates the second bit information and the third bit information and allocates power.
  • Step 905 superimposing the modulated symbols modulated by the second bit information and the third bit information to form second superimposed information.
  • Step 906 mapping the second overlay information onto the second resource particle.
  • Step 907 Send a signal on the plurality of resource particles to the receiving end.
  • step 908 the receiving end detects the power of the signal.
  • Step 909 obtaining a location of the first resource particle where the higher power signal is located and a location of the second resource particle where the lower power signal is located.
  • Step 910 Obtain first bit information according to locations of the first resource particles in the plurality of resource particles.
  • Step 911 obtaining second bit information and third bit information according to signals on the second resource particle.
  • Step 912 Obtain fourth bit information and fifth bit information according to signals on the first resource particle.
  • FIGS. 3 and 9 are only illustrative of the embodiments of the present invention, but the invention is not limited thereto. For example, you can change the order between the steps according to the actual situation, or increase or decrease one or several steps according to the actual situation. Furthermore, Figures 3 and 9 illustrate the case of transmission using a set of REs in which multiple sets of REs can be used for transmission.
  • FIG. 10 is a diagram showing an example of source bit determining data symbol mapping according to an embodiment of the present invention, showing a case of a partial RE (taking 8 REs as an example) at the time of one transmission.
  • every 4 REs are a group, and there are 3 REs in each group for transmitting data of the user equipment 1 and the user equipment 2 (that is, the second bit information and the third bit information are performed in the NOMA manner.
  • Power domain multiplexing 1 RE is used to transmit user equipment 3, user equipment
  • the data of the standby 4 ie, the fourth bit information and the fifth bit information are subjected to power domain multiplexing in the NOMA manner).
  • the RE position occupied by the user equipments 3 and 4 is determined by 2-bit source information (ie, first bit information), and varies between groups and groups according to different source bits.
  • the user equipment 3, 4 first detects the high power position (so that the bit sequence "0010" can be recovered), and then recovers the self data at the high power position (the user equipment 4 directly demodulates the information itself, the user equipment 3 first Demodulate the information of the user equipment 4, and then demodulate the information after the interference is deleted).
  • the user equipments 1 and 2 also detect the high-power position first, and then restore the self-data at the position where the high-power RE is removed (the user equipment 2 directly demodulates the information of the user, and the user equipment 1 demodulates the information of the user equipment 2 to perform interference cancellation. Then demodulate the information itself).
  • bit sequence "0010" (ie the first bit information) since it can be demodulated by all user equipments, it can be used as a common data transmission; it can also be regarded as data of the user equipment 2 or the user equipment 4; As one independent data, another user (such as user equipment 5) is supported for transmission.
  • the high-power location RE it can be used to support different user equipments for data transmission (such as user equipment 3, user equipment 4), and can still be used to transmit data of user equipment 1, user equipment 2; the invention is not limited this.
  • the transmitting end may send, to the receiving end, power information allocated for the second bit information, the third bit information, and the signal on the first resource particle.
  • the plurality of resource particles are N
  • the first bit information includes log 2 (N) bits; however, the present invention is not limited thereto, and multiple groups may be transmitted during actual transmission.
  • each group can be transmitted, each group includes N REs, that is, M*N REs can be used in total, wherein each group can additionally carry log 2 (N) bits, and the M group can additionally carry Mlog 2 (N) in total. Bits.
  • the transmitting end carries a signal with a higher power according to the bit information, and performs power detection at the receiving end and obtains the bit information according to the position of the resource particle where the higher power signal is located in the plurality of resource particles. Therefore, it is possible to carry additional bit information through the resource particle position to achieve the purpose of increasing throughput.
  • the signal on the resource particles with higher power can be the reference signal; since the reference signal is allocated higher power, it is beneficial to improve the channel estimation accuracy, thereby reducing the residual interference in the subsequent serial interference deletion process.
  • the signal on the higher power resource particle may be a data symbol; thereby enabling further carrying of bit information.
  • the embodiment of the invention provides an information transmission method, which is applied to a NOMA system.
  • the embodiment of the present invention is described from the receiving end side, and the same content as that of Embodiment 1 will not be described again.
  • FIG. 11 is a schematic diagram of an information transmission method according to an embodiment of the present invention. As shown in FIG. 11, the information transmission method includes:
  • Step 1101 Receive a signal on multiple resource particles sent by the sending end.
  • Step 1102 Detecting the power of the signal on the plurality of resource particles, and obtaining a location of the first resource particle where the higher power signal is located and a location of the second resource particle where the lower power signal is located;
  • Step 1103 Obtain first bit information according to a position of the first resource particle in the multiple resource particles, and obtain second bit information and third bit information according to the signal on the second resource particle.
  • the receiving end obtains a reference signal according to a signal on the first resource particle, and performs channel estimation according to the reference signal.
  • the receiving end obtains data symbols based on signals on the first resource particle.
  • the data symbol is used to transmit superposition information formed by the second bit information and the third bit information, or superposition information formed by fourth bit information and fifth bit information.
  • the receiving end may further receive power information that is sent by the sending end for the second bit information, the third bit information, and the signal on the first resource particle.
  • the plurality of resource particles form a group, each group includes N resource particles; for each group of resource particles, the first bit information includes log 2 (N) bits.
  • multiple sets of REs can be used for transmission.
  • the transmitting end carries a signal with a higher power according to the bit information, and performs power detection at the receiving end and obtains the bit information according to the position of the resource particle where the higher power signal is located in the plurality of resource particles. Therefore, it is possible to carry additional bit information through the resource particle position to achieve the purpose of increasing throughput.
  • the signal on the resource particles with higher power can be the reference signal; since the reference signal is allocated higher power, it is beneficial to improve the channel estimation accuracy, thereby reducing the residual interference in the subsequent serial interference deletion process.
  • the signal on the higher power resource particle may be a data symbol; thereby enabling further carrying of bit information.
  • Embodiments of the present invention provide an information transmission apparatus, which is applied to a non-orthogonal multiple access system.
  • the embodiment of the present invention corresponds to the information transmission method of Embodiment 1, and the same content is not described again.
  • FIG. 12 is a schematic diagram of an information transmission apparatus according to an embodiment of the present invention.
  • the information transmission apparatus 1200 is configured at a transmitting end. As shown in FIG. 12, the information transmission device 1200 includes:
  • the first power distribution unit 1201 allocates a signal higher than a signal on a second one of the plurality of resource particles for a signal transmitted on the first resource particle of the plurality of resource particles;
  • the first resource mapping unit 1202 determines, according to the first bit information in the information to be transmitted, a location of the first resource particle in the multiple resource particles, and maps a signal transmitted on the first resource particle to On the first resource particle;
  • the second power distribution unit 1203 modulates and allocates power of the second bit information and the third bit information in the information to be transmitted;
  • the second resource mapping unit 1204 superimposes and maps the modulated symbols onto the second resource particles
  • the signal sending unit 1205 sends the signal on the plurality of resource particles to the receiving end, so that the receiving end obtains the position of the first resource particle where the detected high power signal is located in the plurality of resource particles.
  • a reference signal is transmitted on the first resource particle such that the receiving end performs channel estimation based on the reference signal.
  • the data symbols are transmitted on the first resource particle.
  • the data symbol is used to transmit superposition information formed by the second bit information and the third bit information, or superposition information formed by fourth bit information and fifth bit information.
  • the information transmission device 1200 may further include:
  • the power information transmitting unit 1206 transmits power information allocated for the second bit information, the third bit information, and the signal on the first resource particle to the receiving end.
  • the first bit information includes log 2 (N) bits; multiple groups of REs may be used for transmission.
  • the embodiment further provides a transmitting end configured with the information transmission device 1200 as described above.
  • FIG. 13 is a schematic diagram of a configuration of a transmitting end according to an embodiment of the present invention.
  • the transmitting end 1300 can include a central processing unit (CPU) 200 and a memory 210; the memory 210 is coupled to the central processing unit 200.
  • the memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200.
  • the transmitting end 1300 can implement the information transmission method as described in Embodiment 1.
  • the central processing unit 200 can be configured to implement the functions of the information transmission device 1200; that is, the central processing unit 200 can be configured to perform control such that signals transmitted over the first of the plurality of resource particles are distributed higher than the a power of a signal on a second one of the plurality of resource particles; determining, according to the first bit information in the information to be transmitted, a location of the first resource particle in the plurality of resource particles, and A signal transmitted on a resource particle is mapped onto the first resource particle; second bit information and third bit information in the information to be transmitted are modulated and power is allocated; and the modulated symbol is superimposed and mapped to the second resource And transmitting signals on the plurality of resource particles to the receiving end.
  • the transmitting end 1300 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the transmitting end 1300 does not have to include all the components shown in FIG. 13; in addition, the transmitting end 1300 may further include components not shown in FIG. 13, and reference may be made to the prior art.
  • the transmitting end carries a signal with a higher power according to the bit information, and performs power detection at the receiving end and obtains the bit information according to the position of the resource particle where the higher power signal is located in the plurality of resource particles. Therefore, it is possible to carry additional bit information through the resource particle position to achieve the purpose of increasing throughput.
  • the signal on the resource particles with higher power can be the reference signal; since the reference signal is allocated higher power, it is beneficial to improve the channel estimation accuracy, thereby reducing the residual interference in the subsequent serial interference deletion process.
  • the signal on the higher power resource particle may be a data symbol; thereby enabling further carrying of bit information.
  • Embodiments of the present invention provide an information transmission apparatus, which is applied to a non-orthogonal multiple access system.
  • the embodiment of the present invention corresponds to the information transmission method of Embodiment 2, and the same content is not described again.
  • FIG. 14 is a schematic diagram of an information transmission apparatus according to an embodiment of the present invention, where the information transmission apparatus 1400 is configured Receiving end. As shown in FIG. 14, the information transmission device 1400 includes:
  • the signal receiving unit 1401 receives a signal on a plurality of resource particles sent by the transmitting end;
  • the power detecting unit 1402 detects the power of the signal on the plurality of resource particles, and obtains a location of the first resource particle where the higher power signal is located and a location of the second resource particle where the lower power signal is located;
  • the information obtaining unit 1403 obtains first bit information according to the position of the first resource particle in the plurality of resource particles, and obtains second bit information and third bit information according to the signal on the second resource particle.
  • the information obtaining unit 1403 may be further configured to: obtain a reference signal according to the signal on the first resource particle.
  • the information transmission device 1400 may further include: a channel estimation unit that performs channel estimation according to the reference signal.
  • the information obtaining unit 1403 may be further configured to: obtain data symbols according to signals on the first resource particles.
  • the data symbol is used to transmit superposition information formed by the second bit information and the third bit information, or superposition information formed by fourth bit information and fifth bit information.
  • the information transmission device 1400 may further include:
  • the power information receiving unit 1403 receives the power information allocated by the transmitting end for the second bit information, the third bit information, and the signal on the first resource particle.
  • the first bit information includes log 2 (N) bits; multiple groups of REs may be used for transmission.
  • the embodiment further provides a receiving end configured with the information transmission device 1400 as described above.
  • the configuration of the receiving end can be referred to FIG.
  • the transmitting end carries a signal with a higher power according to the bit information, and performs power detection at the receiving end and obtains the bit information according to the position of the resource particle where the higher power signal is located in the plurality of resource particles. Therefore, it is possible to carry additional bit information through the resource particle position to achieve the purpose of increasing throughput.
  • the signal on the resource particles with higher power can be the reference signal; since the reference signal is allocated higher power, it is beneficial to improve the channel estimation accuracy, thereby reducing the residual interference in the subsequent serial interference deletion process.
  • the signal on the higher power resource particle may be a data symbol; thereby enabling further carrying of bit information.
  • Figure 15 is a schematic diagram of a communication system according to an embodiment of the present invention, as shown in Figure 15, the communication system 1500 includes: a transmitting end 1501 and a receiving end 1502;
  • the transmitting end 1501 allocates a signal higher than a signal on a second resource particle of the plurality of resource particles for a signal transmitted on a first resource particle of the plurality of resource particles; according to the first information to be transmitted.
  • Bit information determines a location of the first resource particle in the plurality of resource particles, and maps a signal transmitted on the first resource particle to the first resource particle; a second of the information to be transmitted.
  • the bit information and the third bit information are modulated and allocated power; the modulated symbols are superimposed and mapped onto the second resource particle; and the signals on the plurality of resource particles are transmitted;
  • the receiving end 1502 receives the signal sent by the sending end 1501, detects the power of the signal on the plurality of resource particles, and obtains the position of the first resource particle where the higher power signal is located and the second position where the lower power signal is located. a location of the resource particle; obtaining first bit information according to a location of the first resource particle in the plurality of resource particles, and obtaining second bit information and third bit information according to the signal on the second resource particle.
  • a reference signal is transmitted on the first resource particle; the receiving end 1502 performs channel estimation based on the reference signal.
  • data symbols are transmitted on the first resource particle; the data symbols are used to transmit superposition information formed by the second bit information and the third bit information, or by fourth bit Superimposed information formed by information and fifth bit information.
  • the transmitting end 1501 may be a base station, and the receiving end 1502 may be a user equipment; however, the present invention is not limited thereto.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute the information transmission method according to Embodiment 1 in the base station when the program is executed in a base station.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the information transmission method according to Embodiment 1 in a base station.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to execute the information transmission method according to Embodiment 2 in the user equipment.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer is The reading program causes the computer to execute the information transmission method as described in Embodiment 2 above in the user equipment.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种NOMA的信息传输方法、装置以及通信系统。该信息传输方法包括：发送端为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；将已调制符号叠加并映射到所述第二资源粒子上；以及将所述多个资源粒子上的信号发送给接收端。通过本发明实施例，能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。

Description

信息传输方法、装置以及通信系统 技术领域
本发明涉及通信技术领域，特别涉及一种非正交多址接入(NOMA，Non Orthogonal Multiple Access)系统的信息传输方法、装置以及通信系统。
背景技术
非正交多址接入是5G通信系统的关键技术之一，其出现主要是为了满足5G更高的容量需求以及支持更多的终端连接数目。非正交的理论基础在于非正交多址方式，其已被证明能够实现比正交多址更大的容量域。
非正交方式之一是功率域非正交，其代表性技术NOMA目前已经被纳入LTE-A Release 13讨论范围。NOMA技术源于叠加码理论，发送端在功率域复用用户设备，发送叠加信号，而功率域叠加使得接收端必须使用串行干扰删除(SIC，Successive Interference Cancel)恢复数据。
以NOMA下行传输为例，图1是NOMA收发信号模型的一示意图。由于用户设备2的信道较差，其不能解调用户设备1的数据s1，因此将s1当作干扰，直接对s2进行解调。由于用户设备1的信道较好，其能够解调用户设备2的数据s2，因此先解调s2，然后进行串行干扰删除，干扰删除过程可表示为
Figure PCTCN2015073361-appb-000001
理想条件下能够完全删除s2的干扰，从而使得对s1的解调完全不受s2干扰的影响。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
本发明实施例提供一种信息传输方法、装置以及通信系统。在发送端利用部分资源粒子(RE，Resource Element)携带功率较高的信号并在接收端进行功率检测，能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
根据本发明实施例的第一个方面，提供一种信息传输方法，配置于非正交多址接 入系统，所述信息传输方法包括：
为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；
根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；
对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；
将已调制符号叠加并映射到所述第二资源粒子上；
将所述多个资源粒子上的信号发送给接收端；使得所述接收端根据检测到的功率较高信号所在的第一资源粒子在所述多个资源粒子中的位置获得所述第一比特信息，并根据所述第二资源粒子上的信号获得所述第二比特信息和所述第三比特信息。
根据本发明实施例的第二个方面，提供一种信息传输装置，应用于非正交多址接入系统，所述信息传输装置包括：
第一功率分配单元，为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；
第一资源映射单元，根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；
第二功率分配单元，对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；
第二资源映射单元，将已调制符号叠加并映射到所述第二资源粒子上；
信号发送单元，将所述多个资源粒子上的信号发送给接收端；使得所述接收端根据检测到的功率较高信号所在的第一资源粒子在所述多个资源粒子中的位置获得所述第一比特信息，并根据所述第二资源粒子上的信号获得所述第二比特信息和所述第三比特信息。
根据本发明实施例的第三个方面，提供一种信息传输方法，应用于非正交多址接入系统，所述信息传输方法包括：
接收发送端发送的多个资源粒子上的信号；
对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；
根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
根据本发明实施例的第四个方面，提供一种信息传输装置，应用于非正交多址接入系统，所述信息传输装置包括：
信号接收单元，接收发送端发送的多个资源粒子上的信号；
功率检测单元，对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；
信息获得单元，根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
根据本发明实施例的第五个方面，提供一种通信系统，所述通信系统包括：
发送端，为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；将已调制符号叠加并映射到所述第二资源粒子上；以及发送所述多个资源粒子上的信号；
接收端，接收所述发送端发送的信号；对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行如上所述的信息传输方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行如上所述的信息传输方法。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得计算机在所述用户设备中执行如上所述的信息传输方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在用户设备中执行如上所述的信息传输方法。
本发明实施例的有益效果在于，在发送端根据比特信息使部分资源粒子携带功率较高的信号，在接收端进行功率检测并根据功率较高信号所在资源粒子在多个资源粒子中的位置获得该比特信息；由此能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘制的，而只是为了示出本发明的原理。为了便于示出和描述本发明的一些部分，附图中对应部分可能被放大或缩小。
在本发明的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是NOMA收发信号模型的一示意图；
图2是本发明实施例的信息传输方法的一示意图；
图3是本发明实施例的信息传输方法的另一示意图；
图4是NOMA信号模型中RS功率和数据符号功率的一示意图；
图5是本发明实施例的发送端的一逻辑结构示意图；
图6是本发明实施例的信源比特决定参考信号映射的一示例图；
图7是本发明实施例的高功率参考信号和低功率数据信号的星座的一示意图；
图8是本发明实施例的接收端的一逻辑结构示意图；
图9是本发明实施例的信息传输方法的另一示意图；
图10是本发明实施例的信源比特决定数据符号映射的一示例图；
图11是本发明实施例的信息传输方法的另一示意图；
图12是本发明实施例的信息传输装置的一示意图；
图13是本发明实施例的发送端的一构成示意图；
图14是本发明实施例的信息传输装置的另一示意图；
图15是本发明实施例的通信系统的一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
实施例1
本发明实施例提供一种信息传输方法，应用于NOMA系统。本发明实施例从发送端一侧进行说明。
图2是本发明实施例的信息传输方法的一示意图，如图2所示，所述信息传输方法包括：
步骤201，发送端为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；
步骤202，根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；
步骤203，对待传输信息中的第一比特信息和第二比特信息进行调制并分配功率；
步骤204，将已调制符号叠加并映射到所述第二资源粒子上；
步骤205，将所述多个资源粒子上的信号发送给接收端；使得所述接收端根据检测到的功率较高信号所在的第一资源粒子在所述多个资源粒子中的位置获得所述第一比特信息，并根据所述第二资源粒子上的信号获得所述第二比特信息和所述第三比特信息。
在本实施例中，发送端可以是基站，接收端可以是用户设备。但本发明不限于此， 例如也可以在两个用户设备之间进行NOMA通信，或者在两个基站之间进行NOMA通信；可以根据实际场景确定具体的设备。
在本实施例中，对于待传输信息中的第二比特信息和第三比特信息，发送端可以分别进行信道编码和速率匹配，然后分别进行调制；将调制之后的信号分别进行功率分配后，再进行星座叠加形成叠加信息；然后进行物理资源映射。上述步骤203和204的具体内容，可以参考NOMA的相关技术。
在本实施例中，可以根据第一比特信息为多个资源粒子中的部分资源粒子(例如4个RE中的1个RE)上的信号分配高于其他资源粒子(例如4个RE中的其他3个RE)上的信号的功率。即，可以根据第一比特信息确定功率较高的RE在每组RE中的位置。
例如，第一比特信息为“00”，则可以为4个RE中的第1个RE分配功率P1，其中P1大于该4个RE中第2、3、4个RE的功率P2。由此，接收端可以进行功率检测，在检测到该4个RE中的第1个RE的功率P1大于第2、3、4个RE的功率P2时，可以获得该第一比特信息为“00”。
在本实施例中，可以在步骤202中，根据第一比特信息确定第一资源粒子在该组资源粒子的位置，该组资源粒子中其余的位置即为第二资源粒子的位置。然后在步骤204中，可以将对第二比特信息和第三比特信息进行调制后的已调制符号映射到第二资源粒子上。
由此，能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。值得注意的是，以上以资源粒子分为第一资源粒子和第二资源粒子两类为例进行了说明，但本发明不限于此，例如还可以将资源粒子按照功率的大小分为两类以上，在接收端根据功率的大小分别检测出两类以上资源粒子的位置。
在一个实施方式中，在第一资源粒子上传输的信号为参考信号(RS，Reference Signal)，接收端可以根据所述参考信号进行信道估计。
图3是本发明实施例的信息传输方法的另一示意图，如图3所示，所述信息传输方法包括：
步骤300，发送端将功率信息发送给接收端。
步骤301，为参考信号分配高于第二资源粒子上信号的功率。
步骤302，根据第一比特信息确定第一资源粒子在每组资源粒子中的位置，并将 参考信号映射到第一资源粒子上。
步骤303，发送端对第二比特信息和第三比特信息进行调制并分配功率。
步骤304，将已调制符号叠加形成叠加信息。
步骤305，将叠加信息映射到第二资源粒子上。
步骤306，将所述多个资源粒子上的信号发送给接收端。
步骤307，接收端对信号的功率进行检测。
步骤308，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置。
步骤309，根据第一资源粒子在所述多个资源粒子中的位置获得第一比特信息。
步骤310，根据第一资源粒子上的信号获得参考信号。
步骤311，根据所述参考信号进行信道估计。
步骤312，根据第二资源粒子上的信号获得第二比特信息和第三比特信息。
在本实施方式中，RS位置可以由信源比特确定，该位置会随着信源比特的变化而变化，而不是固定不变的，从而能够通过RS位置携带额外的信源比特信息。此外，通过分配给RS符号更高的功率来提高信道估计性能，从而可以减小NOMA串行干扰删除过程中的残余干扰。
图4是NOMA信号模型中RS功率和数据符号功率的一示意图。如图4所示，目前的NOMA系统中RS所在的RE的功率与其他RE的功率相同。在实际系统中，由于信道估计误差，即使对s2解调正确，仍会存在残余干扰项
Figure PCTCN2015073361-appb-000002
其中Δh1表示h1信道估计误差。
而在本实施方式中，由于参考信号被分配了更高的功率，有利于提高信道估计准确性，从而可以减小接收端串行干扰删除过程中的残余干扰。
图5是本发明实施例的发送端的一逻辑结构示意图。如图5所示，其中信源比特1(第二比特信息)、信源比特2(第三比特信息)独立进行信道编码及调制，然后形成NOMA叠加星座，其中功率分配模块负责NOMA功率分配。
同时该功率分配模块也为参考信号分配高于数据符号的功率。功率分配结果需要以信令方式事先通知接收端，以便收接端正确执行信道估计和数据解调。如图5所示，信源比特3(第一比特信息)用于控制参考信号的RE映射，即决定参考信号所在的 RE位置。
图6是本发明实施例的信源比特决定参考信号映射的一示例图，示出了一次传输时的部分RE(以8个RE为例)的情况。如图6所示，假设每4个RE为一组，每组包含一个参考信号，该参考信号可以占据组内任一RE位置，具体位置由信源比特3中的2个比特决定。
例如，信源比特3为“0010”比特序列，则参考信号将分别占据两组RE的第一和第三个RE位置。由于参考信号具有比数据符号更高的功率，接收端可以通过对功率水平的检测来确定参考信号位置，同时也可以获得由参考信号位置所携带的2个比特，进而恢复出信源比特3。
图7是本发明实施例的高功率参考信号和低功率数据信号的星座的一示意图。图7以信源比特1、信源比特2均采用QPSK调制方式为例，给出了参考信号与数据符号的星座示意。
如图7所示，内圈空心圆表示NOMA叠加星座，包含叠加后的16个NOMA星座点，外圈实心圆表示参考信号星座(LTE标准中参考信号均使用QPSK星座)。由于参考信号被分配了更高功率，并且参考信号为QPSK调制方式，参考信号的每个星座点都具有比NOMA星座点更大的模值，从而有利于接收端进行功率检测。
图8是本发明实施例的接收端的一逻辑结构示意图。如图8所示，接收端可以在每组RE范围内对功率进行检测，取出高功率RE处的符号作为参考信号，用作信道估计，同时根据参考信号的位置信息恢复出信源比特3。
由于参考信号被分配了更高功率，有利于提高信道估计准确性，从而可以减小后面串行干扰删除过程中的残余干扰。接收端在除去参考信号的RE位置上进行解映射，抽取出数据符号，之后先解调并译码信源比特2，然后删除掉信源比特2的影响，继续解调并译码信源比特1。
在另一个实施方式中，第二资源粒子上的信号为数据符号，接收端可以根据该数据符号获得更多的信息。其中，所述数据符号可以用于传输由第一比特信息和第二比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
图9是本发明实施例的信息传输方法的另一示意图，如图9所示，所述信息传输方法包括：
步骤900，发送端将功率信息发送给接收端。
步骤901，发送端对第四比特信息和第五比特信息进行调制并分配功率。
步骤902，将对所述第四比特信息和所述第五比特信息进行调制后的已调制符号进行叠加形成第一叠加信息。
步骤903，根据第一比特信息确定第一资源粒子在每组资源粒子中的位置，并将第一叠加信息映射到第一资源粒子上；其中，第一资源粒子上信号的功率高于第二资源粒子上信号的功率。
步骤904，发送端对第二比特信息和第三比特信息进行调制并分配功率。
步骤905，将对所述第二比特信息和所述第三比特信息进行调制后的已调制符号叠加形成第二叠加信息。
步骤906，将第二叠加信息映射到第二资源粒子上。
步骤907，将所述多个资源粒子上的信号发送给接收端。
步骤908，接收端对信号的功率进行检测。
步骤909，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置。
步骤910，根据第一资源粒子在所述多个资源粒子中的位置获得第一比特信息。
步骤911，根据第二资源粒子上的信号获得第二比特信息和第三比特信息。
步骤912，根据第一资源粒子上的信号获得第四比特信息和第五比特信息。
理论分析而言，对于数据符号传输，在加性白高斯信道条件下，等功率分配是实现香农容量的最优方式，对于衰落信道，达到容量的最优功率分配是时间域或频率域注水。实际系统中，由于使用有限星座点，往往只能达到对理论容量的一种逼近，因此本实施方式考虑使用额外维度进一步携带比特信息。
值得注意的是，图3和图9仅示意性地对本发明实施例进行了说明，但本发明不限于此。例如，还可以根据实际情况变更各步骤之间的顺序，或者根据实际情况增加或减少其中的一个或几个步骤。此外，图3和图9示出了使用一组RE进行传输的情况，在实际传输中可以使用多组RE进行传输。
图10是本发明实施例的信源比特决定数据符号映射的一示例图，示出了一次传输时的部分RE(以8个RE为例)的情况。如图10所示，假设每4个RE为一组，每组内有3个RE用于传输用户设备1、用户设备2的数据(即第二比特信息和第三比特信息，以NOMA方式进行功率域复用)；1个RE用于传输用户设备3、用户设 备4的数据(即第四比特信息和第五比特信息，以NOMA方式进行功率域复用)。
其中，用户设备3、4所占RE位置由2比特信源信息(即第一比特信息)确定，在组与组之间随信源比特不同而发生变化。对于接收端，用户设备3、4首先检测高功率位置(从而能够恢复比特序列“0010…”)，然后在高功率位置对自身数据进行恢复(用户设备4直接解调自身信息，用户设备3先解调用户设备4信息，进行干扰删除之后再解调自身信息)。
用户设备1、2同样先检测高功率位置，然后在除去高功率RE的位置上对自身数据进行恢复(用户设备2直接解调自身信息，用户设备1先解调用户设备2信息，进行干扰删除之后再解调自身信息)。
对于比特序列“0010…”(即第一比特信息)，由于其能够被所有用户设备解调，可以用作公共数据传输；也可以看做是用户设备2或用户设备4的数据；另外也可以作为一路独立数据，支持另外一个用户(如用户设备5)传输。
此外，对于高功率位置RE，其可以用于支持不同用户设备进行数据传输(例如用户设备3、用户设备4)，也可以仍然用于传输用户设备1、用户设备2的数据；本发明不限于此。
在本实施例中，发送端可以将为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息发送给所述接收端。此外，对于每一组，所述多个资源粒子为N个，所述第一比特信息包括log2(N)个比特；但本发明不限于此，在实际传输时可以传输多组。
例如，可以传输M组，每组包括N个RE，即可以总共使用M*N个RE，其中每组可以额外携带log2(N)个比特，则M组可以总共额外携带Mlog2(N)个比特。
由上述实施例可知，在发送端根据比特信息使部分资源粒子携带功率较高的信号，在接收端进行功率检测并根据功率较高信号所在资源粒子在多个资源粒子中的位置获得该比特信息；由此能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
此外，功率较高的资源粒子上的信号可以为参考信号；由于参考信号被分配了更高功率，有利于提高信道估计准确性，从而可以减小后面串行干扰删除过程中的残余干扰。或者，功率较高的资源粒子上的信号可以为数据符号；由此能够进一步携带比特信息。
实施例2
本发明实施例提供一种信息传输方法，应用于NOMA系统。本发明实施例从接收端一侧进行说明，与实施例1相同的内容不再赘述。
图11是本发明实施例的信息传输方法的一示意图，如图11所示，所述信息传输方法包括：
步骤1101，接收发送端发送的多个资源粒子上的信号；
步骤1102，对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；
步骤1103，根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
在一个实施方式中，接收端根据所述第一资源粒子上的信号获得参考信号，并且根据所述参考信号进行信道估计。
在另一个实施方式中，接收端根据所述第一资源粒子上的信号获得数据符号。
其中，所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
在本实施例中，接收端还可以接收所述发送端发送的为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息。
在本实施例中，所述多个资源粒子形成一组，每组包括N个资源粒子；对于每一组资源粒子，所述第一比特信息包括log2(N)个比特。此外，可以使用多组RE进行传输。
由上述实施例可知，在发送端根据比特信息使部分资源粒子携带功率较高的信号，在接收端进行功率检测并根据功率较高信号所在资源粒子在多个资源粒子中的位置获得该比特信息；由此能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
此外，功率较高的资源粒子上的信号可以为参考信号；由于参考信号被分配了更高功率，有利于提高信道估计准确性，从而可以减小后面串行干扰删除过程中的残余干扰。或者，功率较高的资源粒子上的信号可以为数据符号；由此能够进一步携带比特信息。
实施例3
本发明实施例提供一种信息传输装置，应用于非正交多址接入系统。本发明实施例对应于实施例1的信息传输方法，相同的内容不再赘述。
图12是本发明实施例的信息传输装置的一示意图，该信息传输装置1200配置于发送端。如图12所示，所述信息传输装置1200包括：
第一功率分配单元1201，为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；
第一资源映射单元1202，根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；
第二功率分配单元1203，对待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；
第二资源映射单元1204，将已调制符号叠加并映射到所述第二资源粒子上；
信号发送单元1205，将所述多个资源粒子上的信号发送给接收端；使得所述接收端根据检测到的功率较高信号所在的第一资源粒子在所述多个资源粒子中的位置获得所述第一比特信息，并根据所述第二资源粒子上的信号获得所述第二比特信息和所述第三比特信息。
在一个实施方式中，在所述第一资源粒子上传输参考信号，使得所述接收端根据所述参考信号进行信道估计。
在另一个实施方式中，在所述第一资源粒子上传输数据符号。其中，所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
如图12所示，所述信息传输装置1200还可以包括：
功率信息发送单元1206，将为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息发送给所述接收端。
在本实施例中，每一组中资源粒子为N个，第一比特信息包括log2(N)个比特；可以使用多组RE进行传输。
本实施例还提供一种发送端，配置有如上所述的信息传输装置1200。
图13是本发明实施例的发送端的一构成示意图。如图13所示，发送端1300可以包括：中央处理器(CPU)200和存储器210；存储器210耦合到中央处理器200。其中该存储器210可存储各种数据；此外还存储信息处理的程序，并且在中央处理器200的控制下执行该程序。
其中，发送端1300可以实现如实施例1所述的信息传输方法。中央处理器200可以被配置为实现信息传输装置1200的功能；即中央处理器200可以被配置为进行如下控制：为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；对待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；将已调制符号叠加并映射到所述第二资源粒子上；以及将所述多个资源粒子上的信号发送给接收端。
此外，如图13所示，发送端1300还可以包括：收发机220和天线230等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，发送端1300也并不是必须要包括图13中所示的所有部件；此外，发送端1300还可以包括图13中没有示出的部件，可以参考现有技术。
由上述实施例可知，在发送端根据比特信息使部分资源粒子携带功率较高的信号，在接收端进行功率检测并根据功率较高信号所在资源粒子在多个资源粒子中的位置获得该比特信息；由此能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
此外，功率较高的资源粒子上的信号可以为参考信号；由于参考信号被分配了更高功率，有利于提高信道估计准确性，从而可以减小后面串行干扰删除过程中的残余干扰。或者，功率较高的资源粒子上的信号可以为数据符号；由此能够进一步携带比特信息。
实施例4
本发明实施例提供一种信息传输装置，应用于非正交多址接入系统。本发明实施例对应于实施例2的信息传输方法，相同的内容不再赘述。
图14是本发明实施例的信息传输装置的一示意图，该信息传输装置1400配置于 接收端。如图14所示，所述信息传输装置1400包括：
信号接收单元1401，接收发送端发送的多个资源粒子上的信号；
功率检测单元1402，对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；
信息获得单元1403，根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
在一个实施方式中，所述信息获得单元1403还可以用于：根据所述第一资源粒子上的信号获得参考信号。并且，所述信息传输装置1400还可以包括：信道估计单元，根据所述参考信号进行信道估计。
在另一个实施方式中，所述信息获得单元1403还可以用于：根据所述第一资源粒子上的信号获得数据符号。其中，所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
如图14所示，所述信息传输装置1400还可以包括：
功率信息接收单元1403，接收所述发送端发送的为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息。
在本实施例中，每组中多个资源粒子为N个，第一比特信息包括log2(N)个比特；可以使用多组RE进行传输。
本实施例还提供一种接收端，配置有如上所述的信息传输装置1400。其中，该接收端的构成可以参考图13。
由上述实施例可知，在发送端根据比特信息使部分资源粒子携带功率较高的信号，在接收端进行功率检测并根据功率较高信号所在资源粒子在多个资源粒子中的位置获得该比特信息；由此能够通过资源粒子位置携带额外的比特信息，达到增加吞吐量目的。
此外，功率较高的资源粒子上的信号可以为参考信号；由于参考信号被分配了更高功率，有利于提高信道估计准确性，从而可以减小后面串行干扰删除过程中的残余干扰。或者，功率较高的资源粒子上的信号可以为数据符号；由此能够进一步携带比特信息。
实施例5
本发明实施例还提供一种通信系统，与实施例1至4相同的内容不再赘述。图15是本发明实施例的通信系统的一示意图，如图15所示，所述通信系统1500包括：发送端1501和接收端1502；
其中，发送端1501为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；对待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；将已调制符号叠加并映射到所述第二资源粒子上；以及发送所述多个资源粒子上的信号；
接收端1502接收所述发送端1501发送的信号；对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
在一个实施方式中，在所述第一资源粒子上传输参考信号；所述接收端1502根据所述参考信号进行信道估计。
在另一个实施方式中，在所述第一资源粒子上传输数据符号；所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
在本实施例中，发送端1501可以为基站，接收端1502可以为用户设备；但本发明不限于此。
本发明实施例还提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行如上实施例1所述的信息传输方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行如上实施例1所述的信息传输方法。
本发明实施例还提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得计算机在所述用户设备中执行如上实施例2所述的信息传输方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可 读程序使得计算机在用户设备中执行如上实施例2所述的信息传输方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (16)

  1. 一种信息传输装置，配置于非正交多址接入系统，所述信息传输装置包括：
    第一功率分配单元，为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；
    第一资源映射单元，根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将所述第一资源粒子上传输的信号映射到所述第一资源粒子上；
    第二功率分配单元，对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；
    第二资源映射单元，将已调制符号叠加并映射到所述第二资源粒子上；
    信号发送单元，将所述多个资源粒子上的信号发送给接收端；使得所述接收端根据检测到的功率较高信号所在的第一资源粒子在所述多个资源粒子中的位置获得所述第一比特信息，并根据所述第二资源粒子上的信号获得所述第二比特信息和所述第三比特信息。
  2. 根据权利要求1所述的装置，其中，在所述多个资源粒子中的第一资源粒子上传输参考信号，使得所述接收端根据所述参考信号进行信道估计。
  3. 根据权利要求1所述的装置，其中，在所述多个资源粒子中的第一资源粒子上传输数据符号。
  4. 根据权利要求3所述的装置，其中，所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
  5. 根据权利要求1所述的装置，其中，所述装置还包括：
    功率信息发送单元，将为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息发送给所述接收端。
  6. 根据权利要求1所述的装置，其中，所述多个资源粒子为N个，所述第一比特信息包括log2(N)个比特。
  7. 一种信息传输装置，配置于非正交多址接入系统，所述信息传输装置包括：
    信号接收单元，接收发送端发送的多个资源粒子上的信号；
    功率检测单元，对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；
    信息获得单元，根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
  8. 根据权利要求7所述的装置，其中，所述信息获得单元还用于：根据所述第一资源粒子上的信号获得参考信号。
  9. 根据权利要求8所述的装置，其中，所述装置还包括：
    信道估计单元，根据所述参考信号进行信道估计。
  10. 根据权利要求7所述的装置，其中，所述信息获得单元还用于：根据所述第一资源粒子上的信号获得数据符号。
  11. 根据权利要求10所述的装置，其中，所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
  12. 根据权利要求7所述的装置，其中，所述装置还包括：
    功率信息接收单元，接收所述发送端发送的为所述第二比特信息、所述第三比特信息以及所述第一资源粒子上的信号分配的功率信息。
  13. 根据权利要求7所述的装置，其中，所述多个资源粒子为N个，所述第一比特信息包括log2(N)个比特。
  14. 一种通信系统，所述通信系统包括：
    发送端，为在多个资源粒子中的第一资源粒子上传输的信号分配高于所述多个资源粒子中的第二资源粒子上的信号的功率；根据待传输信息中的第一比特信息确定所述第一资源粒子在所述多个资源粒子中的位置，并将在所述第一资源粒子上传输的信号映射到所述第一资源粒子上；对所述待传输信息中的第二比特信息和第三比特信息进行调制并分配功率；将已调制符号叠加并映射到所述第二资源粒子上；以及发送所述多个资源粒子上的信号；
    接收端，接收所述发送端发送的信号；对所述多个资源粒子上的信号的功率进行检测，获得功率较高信号所在的第一资源粒子的位置以及功率较低信号所在的第二资源粒子的位置；根据所述第一资源粒子在所述多个资源粒子中的位置获得第一比特信息，并根据所述第二资源粒子上的信号获得第二比特信息和第三比特信息。
  15. 根据权利要求14所述的通信系统，其中，在所述多个资源粒子中的第一资源粒子上传输参考信号；所述接收端根据所述参考信号进行信道估计。
  16. 根据权利要求14所述的通信系统，其中，在所述多个资源粒子中的第一资源粒子上传输数据符号；所述数据符号用于传输由所述第二比特信息和所述第三比特信息形成的叠加信息，或者由第四比特信息和第五比特信息形成的叠加信息。
PCT/CN2015/073361 2015-02-27 2015-02-27 信息传输方法、装置以及通信系统 WO2016134525A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/073361 WO2016134525A1 (zh) 2015-02-27 2015-02-27 信息传输方法、装置以及通信系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/073361 WO2016134525A1 (zh) 2015-02-27 2015-02-27 信息传输方法、装置以及通信系统

Publications (1)

Publication Number Publication Date
WO2016134525A1 true WO2016134525A1 (zh) 2016-09-01

Family

ID=56787836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/073361 WO2016134525A1 (zh) 2015-02-27 2015-02-27 信息传输方法、装置以及通信系统

Country Status (1)

Country Link
WO (1) WO2016134525A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114696978A (zh) * 2020-12-31 2022-07-01 广州慧睿思通科技股份有限公司 一种上行数据处理系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415176A (zh) * 2009-04-28 2012-04-11 摩托罗拉移动公司 在无线通信系统中用信号通知特定类型的资源元素的方法
CN103369651A (zh) * 2012-03-29 2013-10-23 中兴通讯股份有限公司 一种长期演进系统中分配下行发射功率的方法及装置
CN104301073A (zh) * 2013-07-17 2015-01-21 上海朗帛通信技术有限公司 一种移动通信系统中的参考信号设置方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415176A (zh) * 2009-04-28 2012-04-11 摩托罗拉移动公司 在无线通信系统中用信号通知特定类型的资源元素的方法
CN103369651A (zh) * 2012-03-29 2013-10-23 中兴通讯股份有限公司 一种长期演进系统中分配下行发射功率的方法及装置
CN104301073A (zh) * 2013-07-17 2015-01-21 上海朗帛通信技术有限公司 一种移动通信系统中的参考信号设置方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS: "Further Consideration on RE Mapping for 4Tx PDSCH", 3GPP TSG RAN WG1 MEETING #50BIS RL-074190, 2 October 2007 (2007-10-02) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114696978A (zh) * 2020-12-31 2022-07-01 广州慧睿思通科技股份有限公司 一种上行数据处理系统

Similar Documents

Publication Publication Date Title
CN110380999B (zh) 概率非均匀调制的数据传输方法及装置
JP6692807B2 (ja) マルチユーザ情報伝送の重畳、復調方法及び装置
CN102648597B (zh) 用于多播块确认的方法和装置
WO2016161893A1 (zh) 一种数据传输、接收信号检测的方法和设备
US9401833B2 (en) Method and apparatus for transmitting/receiving signal in wireless communication system
WO2017041297A1 (zh) 信息传输装置、方法以及通信系统
BR112016012150A2 (pt) métodos para cancelamento de interferência a nível de palavra-chave com assistência de rede
US10404504B2 (en) Modulation method, demodulation method, and apparatus for multi-user information transmission
CN105703877B (zh) 叠加编码、解码方法、装置、发射机及接收机
WO2016029442A1 (zh) 一种数据传输方法和设备
WO2018130054A1 (zh) 一种数据接收、发送方法和接收、发送设备
CN106302299B (zh) 一种多用户接入方法及装置
US10432356B2 (en) Data transmitting or receiving method and device for dual TBs, transmitter and receiver
WO2016165095A1 (zh) 信息传输方法、装置以及通信系统
WO2018228498A1 (zh) 传输控制信息的方法、终端设备和网络设备
WO2016134525A1 (zh) 信息传输方法、装置以及通信系统
CN107370532B (zh) 通信系统中的通信方法、基站设备以及通信设备
US20150146559A1 (en) Transmission apparatus, reception apparatus, transmission method, and reception method
WO2016165588A1 (zh) 一种多用户信息处理方法及其装置
WO2016165098A1 (zh) 基于非正交多址技术的信息传输方法、装置和系统
WO2021176267A1 (en) Cell measurement based on physical broadcasting channel payload
WO2016070430A1 (zh) Dm-rs的资源配置方法、装置以及通信系统
WO2018171438A1 (zh) 在多天线通信系统中发射分集的方法及装置
WO2017194017A1 (zh) 信息调制方法及装置
CN108463957A (zh) 适用于非正交多址接入的信息传输方法、装置以及通信系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15882963

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15882963

Country of ref document: EP

Kind code of ref document: A1