WO2015070635A1 - 传输方法及装置 - Google Patents
传输方法及装置 Download PDFInfo
- Publication number
- WO2015070635A1 WO2015070635A1 PCT/CN2014/082694 CN2014082694W WO2015070635A1 WO 2015070635 A1 WO2015070635 A1 WO 2015070635A1 CN 2014082694 W CN2014082694 W CN 2014082694W WO 2015070635 A1 WO2015070635 A1 WO 2015070635A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- downlink
- uplink
- demodulation reference
- reference signal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1461—Suppression of signals in the return path, i.e. bidirectional control circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
- H04L27/26526—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Definitions
- the present invention relates to the field of wireless communications, and more particularly to a transmission method and apparatus.
- the existing LTE (Long Term Evolution) system supports Time Division Duplex (TDD) and Frequency Division Duplex (FDD), SC-FDMA for uplink, and OFDMA for downlink. Therefore, the carrier mapping modes of the uplink and downlink in the existing LTE system are different, and only one carrier mapping manner is used for communication on the same time-frequency resource.
- existing LTE technologies can introduce new communication technologies, such as wireless backhaul, full-duplex transceivers, and dynamic TDD systems. The above new communication technology requires that the uplink signal and the downlink signal coexist on the same time-frequency resource.
- the inventors have found that after the introduction of the new communication technology, there will be simultaneous uplink and downlink carrier mapping modes on the same time-frequency resource, that is, different carrier mapping modes will exist on the same time-frequency resource. Therefore, it is disadvantageous for the communication signal receiver to perform interference cancellation (IC).
- IC interference cancellation
- an object of embodiments of the present invention is to provide a transmission method and apparatus to solve the above problems.
- the embodiment of the present invention provides the following technical solution:
- a transmission method including: The receiving party receives the communication signal, where the communication signal includes an uplink signal and a downlink signal that are transmitted on the same time-frequency resource; the uplink signal and the downlink signal are in the same carrier mapping manner, and the uplink number corresponds to the first multiple access mode. And the downlink signal corresponds to the second multiple access mode; the receiver performs interference cancellation on the communication signal according to the first multiple access mode and the second multiple access mode.
- the same carrier mapping manner is a downlink carrier mapping manner
- the receiving the communication signal includes: receiving a communication signal at a frequency point corresponding to the downlink carrier mapping manner
- the same carrier mapping mode is an uplink carrier mapping mode
- the receiving the communication signal includes: receiving a communication signal at a frequency point corresponding to the uplink carrier mapping mode.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal;
- the downlink signal includes a downlink demodulation reference signal and a downlink data signal;
- the downlink signal is used, and the resource unit RE mapping mode of the downlink demodulation reference signal; in the received communication signal, the RE position of the uplink demodulation reference signal is the same as the RE position of the downlink demodulation reference signal; or
- the uplink signal and the downlink signal are used, and the RE demodulation reference signal is in the RE mapping mode.
- the RE position of the downlink demodulation reference signal is the same as the RE position of the uplink demodulation reference signal.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal;
- the downlink signal includes a downlink demodulation reference signal and a downlink data signal;
- the RE position of the uplink demodulation reference signal is different from the RE position of the downlink demodulation reference signal;
- the uplink signal is processed by downlink silence/low power, and the downlink signal is uplinked. Silent / low power processing.
- the interference deletion includes: performing a discrete Fourier transform on the communication signal, to obtain Mixing the received signal in the frequency domain; separating the uplink demodulation reference signal, the downlink demodulation reference signal, and the first data signal from the frequency domain mixed received signal, where the first data signal includes an uplink data signal and a downlink data signal number;
- the interference signal is an uplink data signal
- the first multiple address is a single carrier frequency division multiple access (SC-FDMA)
- the second multiple access is an orthogonal frequency division multiple access OFDMA;
- the demodulating the first data signal according to the modulation mode of the uplink signal, and obtaining the interference signal estimated value comprises: performing channel estimation according to the uplink demodulation reference signal, a first channel estimation value; performing channel equalization according to the uplink demodulation reference signal and the first data signal, to obtain a first equalization result;
- An uplink modulated signal estimated value; multiplying the uplink modulated signal estimated value by the first channel estimated value to obtain the interference signal estimated value; and performing demodulating the second data signal comprises: according to a downlink demodulation reference Performing channel estimation on the signal to obtain a second channel estimation value; performing channel equalization according to the downlink demodulation reference signal and the second data signal, to obtain a second equalization result;
- the interference signal is a downlink data signal
- the first multiple address is a single carrier frequency division multiple access (SC-FDMA)
- SC-FDMA single carrier frequency division multiple access
- Demodulating the second data signal includes: performing channel estimation according to the uplink demodulation reference signal to obtain a first channel estimation value; performing channel equalization according to the uplink demodulation reference signal and the second data signal, to obtain a first equalization Result
- Channel decoding is performed on the estimated value of the uplink modulated signal to obtain data bits.
- a transmission method including: an uplink signal sender sends an uplink signal, and the uplink signal and a downlink signal transmitted on the same time-frequency resource use the same carrier mapping manner.
- the uplink number corresponds to the first multiple access mode
- the downlink signal corresponds to the second multiple access mode.
- the method further includes: performing, by the uplink signal sender, continuous/non- Continuous spectrum shifting, so that the frequency of the uplink signal is moved to a frequency point corresponding to the downlink carrier mapping mode.
- the continuous/non-continuous spectrum shifting includes: moving a continuous spectrum of the uplink signal from the center point to the two sides by half The carrier width is obtained as a discontinuous spectrum; the center of the discontinuous spectrum is vacated by one subcarrier width.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal; and the downlink signal includes a downlink demodulation reference signal and a downlink data signal;
- the method further includes: performing, by the uplink signal sender, uplink RE mapping and downlink RE mapping.
- the RE position of the uplink demodulation reference signal is the same as the RE position of the downlink demodulation reference signal.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal
- the downlink signal includes a downlink demodulation reference signal and a downlink data signal
- the method further includes: performing, by the uplink signal sender, downlink silence/low power processing.
- the performing the uplink RE mapping to the downlink RE mapping process includes: transmitting an uplink solution on the RE transmitting the downlink demodulation reference signal And adjusting the reference signal, and the orthogonal sequence of the uplink demodulation reference signal is orthogonal to the orthogonal sequence code of the downlink demodulation reference signal.
- a transmission method including: sending, by a sender of a downlink signal, a downlink signal, where the downlink signal is uploaded with the same time-frequency resource The uplink signal is transmitted in the same carrier mapping manner, the uplink number corresponds to the first multiple access mode, and the downlink signal corresponds to the second multiple access mode.
- the method further includes: the sender of the downlink signal is discontinuous /Continuous spectrum shifting, so that the frequency of the downlink signal is moved to a frequency point corresponding to the uplink carrier mapping mode.
- the discontinuous/continuous spectrum shifting includes: moving the discontinuous spectrum of the downlink signal from the two sides to the central point by half The carrier width is obtained to obtain a continuous spectrum; the center of the discontinuous spectrum is vacated by one subcarrier width.
- the uplink signal includes an uplink demodulation reference signal and An uplink data signal;
- the downlink signal includes a downlink demodulation reference signal and a downlink data signal; when the uplink signal and the downlink signal are used, and the resource unit RE of the uplink demodulation reference signal is mapped, before the downlink signal is sent
- the method further includes: performing, by the sender of the downlink signal, downlink RE mapping to uplink RE mapping processing, so that the RE position of the downlink demodulation reference signal and the RE of the uplink demodulation reference signal are included in the communication signal received by the signal receiver The location is the same.
- the uplink signal includes an uplink demodulation reference signal and An uplink data signal;
- the downlink signal includes a downlink demodulation reference signal and a downlink data signal; when an RE position of the uplink demodulation reference signal is different from an RE position of the downlink demodulation reference signal, before transmitting the downlink signal,
- the method further includes: performing, by the sender of the downlink signal, uplink silence/low power processing.
- the downlink RE mapping to uplink RE mapping processing includes: transmitting a downlink solution on an RE that transmits the uplink demodulation reference signal And adjusting the reference signal, and the orthogonal sequence of the downlink demodulation reference signal is orthogonal to the orthogonal sequence code of the uplink demodulation reference signal.
- a transmission apparatus including: a receiving unit, configured to receive a communication signal, where the communication signal includes an uplink signal and a downlink signal transmitted on the same time-frequency resource; And the downlink signal is in the same carrier mapping manner; the uplink number corresponds to the first multiple access mode, the downlink signal corresponds to the second multiple access mode, and the interference deleting unit is configured to use the first multiple access mode and the The second multiple access mode performs interference cancellation on the communication signal.
- the receiving unit when the same carrier mapping mode is a downlink carrier mapping mode, the receiving unit is specifically configured to: in the downlink carrier mapping, in receiving the communication signal Receiving the communication signal at the frequency corresponding to the mode; or, when the same carrier mapping mode is the uplink carrier mapping mode, the receiving unit is specifically configured to: correspond to the uplink carrier mapping mode The communication signal is received at the frequency point.
- the interference deleting unit is specifically configured to: perform a discrete Fourier transform on the communication signal to obtain a frequency domain mixed received signal; An uplink demodulation reference signal, a downlink demodulation reference signal, and a first data signal are separated from the frequency domain mixed received signal, where the first data signal includes an uplink data signal and a downlink data signal;
- the first multiple address is single carrier frequency division multiple access (SC-FDMA), and the second multiple address is orthogonal frequency division Multiple access OFDMA; when the interference signal is an uplink data signal, the first data signal is demodulated according to a modulation mode of the uplink signal to obtain an interference signal estimation value, and the interference deletion unit is specifically used
- SC-FDMA single carrier frequency division multiple access
- OFDMA orthogonal frequency division Multiple access
- the interference deleting unit is specifically configured to: perform channel estimation according to the downlink demodulation reference signal, to obtain a second channel estimation value; and perform channel according to the downlink demodulation reference signal and the second data signal. Equilibrium, obtaining a second equilibrium result;
- the interference signal is a downlink data signal
- the first data signal is demodulated according to a modulation mode of the downlink signal to obtain an interference signal estimation value
- the interference deleting unit is specifically configured to: according to the downlink demodulation reference signal Performing channel estimation to obtain a second channel estimation value; performing channel equalization according to the downlink demodulation reference signal and the first data signal, to obtain a second equalization result;
- the interference deleting unit is specifically configured to: perform channel estimation according to the uplink demodulation reference signal to obtain a first channel estimation value; and perform channel according to the uplink demodulation reference signal and the second data signal. Equilibrium, obtaining the first equilibrium result;
- a transmission apparatus including: an uplink sending unit, configured to send an uplink signal, where the uplink signal and a downlink signal transmitted on the same time-frequency resource use the same carrier mapping manner, where The uplink number corresponds to the first multiple access mode, and the downlink signal corresponds to the second multiple access mode.
- the apparatus when the same carrier mapping mode is a downlink carrier mapping mode, the apparatus further includes: a continuous/non-contiguous spectrum shifting unit, configured to be used in the uplink Before the transmitting unit sends the uplink signal, the continuous/discontinuous frequency shift is performed to move the frequency of the uplink signal to the frequency point corresponding to the downlink carrier mapping mode.
- a continuous/non-contiguous spectrum shifting unit configured to be used in the uplink Before the transmitting unit sends the uplink signal, the continuous/discontinuous frequency shift is performed to move the frequency of the uplink signal to the frequency point corresponding to the downlink carrier mapping mode.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal; and the downlink signal includes a downlink demodulation reference a signal and a downlink data signal; when the uplink signal and the downlink signal are used, and the resource unit RE mapping mode of the downlink demodulation reference signal, the apparatus further includes an uplink RE mapping and a downlink RE mapping unit, where Before the uplink transmitting unit sends the uplink signal, the uplink RE mapping to the downlink RE mapping process is performed, so that the RE position of the uplink demodulation reference signal and the RE position of the downlink demodulation reference signal are the same in the communication signal received by the signal receiver.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal; and the downlink signal includes a downlink demodulation reference a signal and a downlink data signal; when the RE position of the uplink demodulation reference signal is different from the RE position of the downlink demodulation reference signal, the apparatus further includes a downlink silence/low power unit for the transmitting unit Perform downlink silence/low power processing before transmitting the uplink signal.
- a transmission apparatus including: a downlink sending unit, configured to send a downlink signal, where the downlink signal uses the same carrier mapping manner as an uplink signal transmitted on the same time-frequency resource
- the uplink number corresponds to the first multiple access mode
- the downlink signal corresponds to the second multiple access mode.
- the apparatus in a first possible implementation manner, when the same carrier mapping mode is an uplink carrier mapping mode, the apparatus further includes a discontinuous/continuous frequency shifting unit, configured to be used in the downlink Before transmitting the downlink signal, the transmitting unit performs discontinuous/continuous spectrum shifting, so that the frequency of the downlink signal is moved to a frequency point corresponding to the uplink carrier mapping mode.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal; and the downlink signal includes a downlink demodulation reference And a downlink data signal RE; Before the downlink transmitting unit sends the downlink signal, performing downlink RE mapping to uplink RE mapping processing, so that the RE position of the downlink demodulation reference signal and the RE position of the uplink demodulation reference signal are the same in the communication signal received by the signal receiver.
- the uplink signal includes an uplink demodulation reference signal and an uplink data signal; and the downlink signal includes a downlink demodulation reference a signal and a downlink data signal; when the RE position of the uplink demodulation reference signal is different from the RE position of the downlink demodulation reference signal, the apparatus further includes an uplink silence/low power unit, configured to send on the downlink The uplink silence/low power processing is performed before the unit sends the downlink signal.
- the uplink and downlink signals transmitted on the same time-frequency resource are the same.
- the carrier mapping mode can overcome the problem that the uplink and downlink signal carrier mapping modes of the same time-frequency resource are different after the introduction of the new technology, which is beneficial to the communication signal receiver to perform interference deletion.
- FIG. 2 is a flowchart of a transmission method according to an embodiment of the present invention
- FIG. 3 is a flowchart of interaction between an uplink signal and a downlink signal according to an embodiment of the present invention
- FIG. Another scenario in which the uplink signal and the downlink signal coexist in the embodiment is provided.
- FIG. 6 is still another scenario in which the uplink signal and the downlink signal coexist in the embodiment of the present invention
- FIG. 7 is a scenario in which the uplink signal and the downlink signal coexist according to the embodiment of the present invention
- FIG. 8 is a schematic diagram of shifting an uplink carrier mapping frequency into a downlink carrier mapping spectrum according to an embodiment of the present invention;
- FIG. 9 is a schematic diagram of the downlink carrier mapping frequency spectrum after moving to a downlink carrier mapping frequency according to an embodiment of the present invention
- FIG. 10 is a schematic diagram of moving a downlink carrier mapping frequency into an uplink carrier mapping frequency spectrum according to an embodiment of the present invention
- FIG. 11 is a schematic diagram of a RE mapping position of a downlink demodulation RS signal according to an embodiment of the present invention
- FIG. 13 is a schematic diagram of an uplink solution provided by an embodiment of the present invention
- FIG. 14 is a schematic diagram of another RE mapping position of a downlink demodulation RS signal according to an embodiment of the present invention
- FIG. 15 is a flowchart of interference deletion according to an embodiment of the present invention
- FIG. 16 is another flowchart of interference deletion according to an embodiment of the present invention
- FIG. 17 is still another flowchart of interference deletion according to an embodiment of the present invention
- FIG. 19 is a schematic diagram of another structure of a transmission apparatus according to an embodiment of the present invention
- FIG. 11 is a schematic diagram of a RE mapping position of a downlink demodulation RS signal according to an embodiment of the present invention
- FIG. 13 is a schematic diagram of an uplink solution provided by an embodiment of the present invention
- FIG. 14 is a schematic diagram of another RE mapping position
- FIG. 20 is a schematic diagram of another structure of a transmission apparatus according to an embodiment of the present invention.
- FIG. 22 is a schematic structural diagram of a transmission apparatus according to an embodiment of the present invention.
- FIG. 23 is a schematic structural diagram of an uplink signal generation unit according to an embodiment of the present invention.
- FIG. 25 is a schematic structural diagram of an IC unit according to an embodiment of the present invention;
- FIG. 26 is still another schematic structural diagram of a transmission apparatus according to an embodiment of the present invention.
- the LTE system transmits only uplink signals or downlink signals on the same time-frequency resource. See Figure 1 (the abscissa is the frequency domain coordinates, and the ordinate is the frequency domain amplitude).
- SC-FDMA Single Carrier- Frequency Division Multiplexing Access
- the sub-carriers are continuous in the spectrum
- the downlink is OFDM (Orthogonal Frequency Division Multiplexing Access), which is vacated in the frequency transmission center.
- One subcarrier is not used, and the vacant subcarrier is a DC carrier (DC carrier) component.
- the inventors have found that new communication technologies introduced to improve resource utilization and reduce costs have many requirements for coexistence of uplink signals and downlink signals on the same time-frequency resources, for example, wireless backhaul, full double New communication technologies such as transceivers and dynamic TDD systems.
- the uplink and downlink carrier mapping modes are not aligned and differ by half a subcarrier. Therefore, after coexisting the uplink and downlink signals on the same time-frequency resource, the misaligned carrier mapping manner is not conducive to Subsequent interference cancellation (IC) needs to be optimized.
- IC Subsequent interference cancellation
- an embodiment of the present invention provides a transmission method and apparatus.
- the execution body of the foregoing transmission method may be an uplink signal sender, a downlink signal sender, or a signal receiver. That is, the transmission device may be an uplink signal sender, a downlink signal sender, or a signal receiver.
- the execution entity is an uplink signal sender
- the corresponding transmission method may include at least the following steps: sending an uplink signal, where the uplink signal and the downlink signal transmitted on the same time-frequency resource use the same carrier mapping manner.
- the foregoing transmission method may include: transmitting a downlink signal, where the downlink signal uses the same carrier mapping manner as the uplink signal transmitted on the same time-frequency resource.
- the foregoing transmission method may at least include:
- the received communication signal includes an uplink signal and a downlink signal transmitted on the same time-frequency resource, and the uplink signal and the downlink signal are in the same carrier mapping manner.
- the uplink signal corresponds to the first multiple access mode
- the downlink signal corresponds to the second multiple access mode
- the uplink signal and the downlink signal received on the same time-frequency resource use the same carrier mapping manner, thereby facilitating interference cancellation by the signal receiver.
- This article will describe in detail how to perform interference removal.
- the uplink signal and the downlink signal transmitted on the same time-frequency resource in all the foregoing embodiments may use the same demodulation reference signal mapping manner, or may use different demodulation reference signals. The mapping method will be described in detail later in this article.
- the LPN Low Power Node
- the LPN receives the uplink signal sent by the UE and the downlink signal sent by the base station (eNB) on the same time-frequency resource.
- the LPN sends a downlink signal to the UE on the same time-frequency resource, and sends an uplink signal to the base station (eNB).
- eNB base station
- the base station receives the UE1/LPN1 downlink signal on the same time-frequency resource, and sends the downlink signal to UE2/LPN2.
- the fourth scenario as shown in Figure 7, in the dynamic TDD system, because the service requirements of different cells may be different, resulting in different uplink and downlink subframe ratios of adjacent cells, there are adjacent time-frequency resources, adjacent In the cell, UE1/LPN1 transmits an uplink signal to the first base station (eNB1), and the second base station (eNB2) transmits a downlink signal to UE2/LPN2.
- eNB1 first base station
- eNB2 the second base station
- the transmission method to be protected by the present invention will be described in detail below in different scenarios.
- the first scenario is introduced first. In the first scenario, still refer to FIG.
- the LPN is used as a signal receiver (the role of the LPN may be a relay or a base station), the UE acts as an uplink signal sender, and the eNB acts as a downlink signal sender.
- the first multiple access mode is SC-FDMA
- the second multiple access mode is OFDMA.
- the uplink and downlink signals transmitted on the same time-frequency resource can be used in the same carrier mapping manner. For example, the uplink and downlink signals transmitted on the same time-frequency resource are all used in the downlink carrier.
- the mapping mode, or both, uses the uplink carrier mapping method.
- the LPN determines which uplink and downlink signals are transmitted on the same time-frequency resource. Carrier mapping mode.
- the uplink and downlink signals transmitted on the same time-frequency resource are in the downlink carrier mapping mode, since the UE sends the uplink signal by using the above-mentioned line carrier mapping manner, the LPN needs to notify the UE to perform continuous/discontinuous before receiving the communication signal. Frequency moves.
- the transmission method corresponding to the signal receiver (LPN) may further include: notifying the UE (the uplink signal sender) of performing continuous/discontinuous spectrum shifting on the uplink signal.
- the UE before transmitting the uplink signal, the UE needs to perform continuous/discontinuous spectrum shifting (according to the notification of the signal receiver) to move the frequency of the uplink signal to the frequency corresponding to the downlink carrier mapping mode.
- the purpose of the above-mentioned continuous/non-continuous frequency shifting is to move the uplink carrier mapping spectrum into a downlink carrier mapping spectrum. Referring to FIG. 8, more specifically, it may include: Continuity of the uplink signal (on the time-frequency resource) The spectrum, moving half the subcarrier width from the center point to the sides, results in a discontinuous spectrum (see Figure 9).
- both the UE (uplink signal sender) and the eNB (downlink signal sender) transmit the uplink and downlink signals by using the downlink carrier mapping manner shown in FIG. 9, that is, on the same time-frequency resource.
- the same carrier mapping method is used for the uplink and downlink signals transmitted.
- the "receiving communication signal" performed by the LPN may specifically include: receiving the communication signal at a frequency point corresponding to the downlink carrier mapping mode.
- the eNB sends the downlink signal by default in the following carrier mapping manner. Therefore, before receiving the communication signal, the LPN needs to notify the eNB to perform the discontinuous signal. / Continuous spectrum shifting.
- the signal receiving party (LPN) corresponding transmission method may further include: notifying the eNB (downlink signal sender) to perform discontinuous/continuous frequency shifting on the downlink signal.
- the eNB before transmitting the downlink signal, the eNB needs to perform discontinuous/continuous frequency shifting on the downlink signal (in accordance with the notification of the signal receiver), so that the frequency of the downlink signal is moved to the frequency corresponding to the uplink carrier mapping mode. on.
- the method may include: moving a discontinuous spectrum of the downlink signal from the two sides to the center point by half a subcarrier width to obtain a continuous spectrum (see FIG. 11).
- both the UE (uplink signal sender) and the eNB (downlink signal sender) transmit uplink and downlink signals by using the uplink carrier mapping manner shown in FIG. 11, and thus can also be implemented at the same time frequency.
- the uplink and downlink signals transmitted on the resource use the same carrier mapping method.
- the "reception" performed by the LPN may specifically include: receiving at a frequency corresponding to the uplink carrier mapping mode.
- the uplink signal may include an uplink demodulation reference (RS) signal and an uplink data signal;
- the downlink signal may include a downlink demodulation reference (RS) signal and a downlink data signal.
- RS uplink demodulation reference
- RS downlink demodulation reference
- Figure 12 shows the RE mapping position of the downlink demodulated RS signal on one RB.
- the abscissa is a time slot
- the vertical sub-carrier is a sub-carrier.
- the PDSCH Physical Downlink Shared Channel
- the data of the DSCH (downlink shared channel), that is, the downlink data signal is transmitted; the DL UE - specific RS indicates that the downlink demodulation reference signal is transmitted on the RE.
- Even-numbered slots represent odd time slots:
- odd-numbered slots represent the number of time slots:.
- Figure 13 shows the RE mapping position of the upstream demodulated RS signal on one RB.
- UL DM - RS Demodulation Reference Signal
- the demodulation reference signals used for channel estimation in each channel are required to be orthogonal to each other, or Mutual interference is small. If the two demodulation reference signals are on the same RE, it is necessary to assign different orthogonal sequences to the two demodulation reference signals to ensure that the two code divisions are orthogonal; and if the two demodulation reference signals are on different REs They are naturally orthogonal.
- the downlink demodulation RS signal and the uplink demodulation RS signal are on different REs (that is, the RE mapping position of the downlink demodulation RS signal and the uplink demodulation RS signal).
- the RE mapping locations are staggered), so they are orthogonal.
- Introducing Xintong The signal technology, on the same time-frequency resource, after the uplink signal and the downlink signal coexist, the uplink demodulation RS signal will be interfered by the downlink data signal, and the downlink demodulation RS signal will also be interfered by the uplink data signal, thus causing the channel
- the estimation is not accurate, which directly affects the interference deletion and demodulation results, so it needs to be optimized.
- the same demodulation reference signal mapping mode can be used for the uplink and downlink signals transmitted on the same time-frequency resource.
- the RE mapping method of the uplink demodulation reference signal or the RE mapping method of the downlink demodulation reference signal is used.
- the LPN determines which demodulation reference signal RE mapping mode is used for the uplink and downlink signals transmitted on the same time-frequency resource.
- the uplink signal and the downlink signal are both in the RE mapping mode of the downlink demodulation reference signal, since the UE sends the uplink signal by using the RE mapping mode of the uplink demodulation reference signal by default, the LPN needs to notify before receiving the communication signal.
- the UE performs an uplink RE mapping to a downlink RE mapping process.
- the transmission method performed by the UE may further include: (according to the notification of the signal receiver) performing uplink RE mapping and downlink RE mapping processing, so that the communication signal received by the receiver is uplinked
- the RE position of the demodulation reference signal is the same as the RE position of the downlink demodulation reference signal.
- the foregoing uplink RE mapping to downlink RE mapping process includes: transmitting an uplink demodulation reference signal on a default transmission downlink demodulation reference signal RE (in LTE, both the base station and the UE know the default uplink demodulation reference) The RE mapping position of the signal and the RE mapping position of the default downlink demodulation reference signal).
- the uplink demodulation reference signal is further A new orthogonal sequence is used, and its (new) orthogonal sequence is orthogonal to the orthogonal sequence code of the downlink demodulation reference signal.
- the RE mapping position and the orthogonal sequence of the downlink RS demodulation signal of the eNB do not need to be adjusted or updated. In this way, the uplink and downlink signals can be transmitted according to the mapping manner of FIG.
- the base station uses the RE mapping mode of the downlink demodulation reference signal to transmit the downlink signal by default, so Before receiving the communication signal, the LPN also needs to notify the base station to perform downlink RE mapping to uplink RE mapping processing.
- the transmission method performed by the base station may further include: (according to the notification of the signal receiver) performing downlink RE mapping to uplink RE mapping processing, so that the communication signal received by the signal receiver is The RE position of the downlink demodulation reference signal is the same as the RE position of the uplink demodulation reference signal.
- the downlink RE mapping to the uplink RE mapping process includes: transmitting a downlink demodulation reference signal on the RE of the default uplink demodulation reference signal, and using the (new) orthogonal sequence of the downlink demodulation reference signal It is orthogonal to the orthogonal sequence code of the above uplink demodulation reference signal.
- the RE mapping position and the orthogonal sequence of the uplink RS demodulation signal of the UE do not need to be adjusted or updated. In this way, the uplink and downlink signals can be transmitted according to the mapping manner of FIG. It should be noted that both the base station and the UE store the orthogonal sequence set, so the new orthogonal sequence may be selected from the orthogonal sequence set.
- the RE position of the uplink demodulation reference signal is different from the RE position of the downlink demodulation reference signal in the communication signal received by the receiver. That is, the RE mapping position of the downlink demodulation RS signal is shifted from the RE mapping position of the uplink demodulation RS signal.
- the RE mapping position of the uplink demodulation RS signal and the RE mapping position of the downlink demodulation RS signal are originally shifted, so that the default RE mapping mode of the uplink demodulation RS signal can be maintained, and the downlink solution is The default RE mapping mode of the RS signal is unchanged. That is, the base station transmits the downlink signal and still uses the default RE mapping mode of the downlink demodulation reference signal, and the UE transmits the uplink signal and still uses the default RE mapping mode of the uplink demodulation reference signal.
- the RE mapping positions of the uplink and downlink demodulation RS signals can also be redistributed and staggered, which will not be described herein.
- the LPN can perform the following operations:
- Notifying the UE to perform downlink silence/low power processing notifying the base station to perform uplink silence/low power processing. That is, before sending the uplink signal, the UE also needs to perform downlink silence according to the notification of the LPN. Silent/low power processing.
- the base station needs to perform uplink silence/low power processing (according to the LPN notification) before transmitting the downlink signal.
- the uplink signal is processed by downlink static/low power, and the downlink signal is processed by uplink silence/low power.
- the downlink silence/low power processing described above may include: maintaining silence or low power transmission on the RE transmitting the downlink demodulation reference signal.
- the above uplink silence/low power processing may include: maintaining silence or low power transmission on the RE transmitting the uplink demodulation reference signal.
- FIG. 14 shows the mapping position of the downlink demodulation reference signal on the base station side of the present embodiment. It can be seen that the PDSCH (downlink data signal) is not transmitted at the RE position corresponding to the uplink demodulation RS signal, and remains silent.
- the uplink RE mapping to the downlink RE mapping processing, the downlink RE mapping to the uplink RE mapping processing, the downlink silence/low power processing, and the uplink silence/low power processing may be collectively referred to as RE mapping processing.
- Continuous/non-continuous frequency shifting and discontinuous/continuous spectrum shifting are collectively referred to as frequency shifting.
- the LPN may notify the UE or the eNB to perform RE mapping processing while notifying the UE or the eNB to perform spectrum shifting, or may also divide Two steps to notify.
- the RE mapping process may be performed while performing the frequency shifting, or the frequency shifting may be performed first. RE mapping processing, or performing RE mapping processing first, and then performing spectrum shifting.
- the adjustment of the carrier mapping mode and the demodulation reference signal mapping mode does not affect the modulation mode of the uplink and downlink signals, and the modulation mode of the uplink signal is still the default modulation mode. Similarly, the modulation of the downlink signal. The mode is still the default modulation method.
- the conventional IC processing is based on the premise that the received two signals are used in the same modulation mode, and the case where the receiving end simultaneously receives the uplink and downlink signals is not considered.
- the uplink and downlink signals will coexist on the same time-frequency resource, and the modulation modes and multiple access modes of the uplink and downlink signals may be different, which requires optimization of the IC.
- the foregoing interference deletion may include the following steps:
- DTF discrete Fourier transform
- the uplink demodulation reference signal, the downlink demodulation reference signal, and the first data signal including the uplink data signal and the downlink data signal are separated from the frequency domain mixed received signal.
- the signal receiver may separate the uplink demodulation reference signal, the downlink demodulation reference signal, and the first data signal including the uplink data signal and the downlink data signal according to the demodulation reference information of the uplink and downlink signals acquired in advance.
- the demodulation reference information includes the RE positions of the uplink and downlink demodulation reference signals. More specifically, the manner of separating the first data signal may include:
- the uplink signal transmitter and the downlink signal sender use the RE mapping mode of the uplink demodulation reference signal
- the RE positions of the uplink and downlink demodulation reference signals are the same.
- the RE mapping method of the downlink demodulation reference signal when separating the data, please refer to FIG. 12, and the signal at the position of the downlink demodulation reference signal RE is removed, and the first data can be separated.
- the received uplink and downlink demodulation RS signal is in the staggered manner, the signal at the position of the upper and lower demodulation reference signal RE is removed, and the first data can be separated.
- the uplink data signal may be an interference signal
- the downlink data signal may be a useful signal
- the downlink data signal may be an interference signal
- the uplink data signal may be a useful signal. More specifically, referring to FIG. 16, when the interference signal is an uplink data signal, and the useful signal is a downlink data signal, the foregoing step S23 may include:
- IDFT inverse discrete Fourier transform
- step S235 Multiply the uplink modulated signal estimated value by the first channel estimated value to obtain the interference signal estimated value.
- the interference cancellation when the interference signal is the uplink data signal and the useful signal is the downlink data signal may be referred to as the first interference deletion.
- the interference signal is a downlink data signal and the useful signal is an uplink data signal, refer to FIG. 17, and the foregoing step S23 may include:
- S234' Multiplying the downlink modulated signal estimated value by the second channel estimated value to obtain the interference signal estimated value.
- step S25 demodulating the second data signal
- step S25 may include:
- the interference cancellation performed when the interference signal is a downlink data signal and the useful signal is an uplink data signal may be referred to as a second interference deletion.
- the LPN uses MU-MIMO (Multi-User Multiple Input Multiple Output) technology to simultaneously transmit data to the UE and the eNB (the role of the LPN may be Relay or base station). Therefore, in this scenario, the LPN acts as both the upstream signal sender and the downstream signal sender. Due to multipath transmission and the like, the UE can receive the uplink signal in addition to the downlink signal. Similarly, the eNB can receive the downlink signal in addition to the uplink signal. That is, both the UE and the eNB are signal receivers.
- MU-MIMO Multi-User Multiple Input Multiple Output
- the first multiple access mode is also SC-FDMA
- the second multiple access mode is also OFDMA.
- the uplink and downlink signals transmitted on the same time-frequency resource can be used in the downlink carrier mapping mode or the uplink carrier mapping mode. Since the LPN is simultaneously used as the sender of the uplink and downlink signals, the LPN needs to perform continuous/discontinuous frequency shifting before transmitting the uplink signal, as in the downlink carrier mapping mode.
- the LPN needs to notify the eNB to receive at the frequency corresponding to the downlink carrier mapping mode.
- the "receiving communication signal" performed by the signal receiver may specifically include: (according to the notification of the LPN) receiving the communication signal at a frequency point corresponding to the downlink carrier mapping mode. If the uplink carrier mapping mode is used, the LPN needs to perform discontinuous/continuous frequency shifting before transmitting the downlink signal.
- the UE receives the downlink signal by default in the following line carrier mapping manner. Therefore, when the uplink carrier mapping mode is used, the LPN needs to notify the UE before receiving the downlink signal, and receives the frequency corresponding to the uplink carrier mapping mode.
- the "receiving communication signal" performed by the signal receiver may specifically include: (according to the notification of the LPN) receiving the communication signal at a frequency point corresponding to the uplink carrier mapping mode.
- the second scenario that needs to be optimized in the second scenario is the demodulation reference signal mapping.
- the uplink and downlink signals transmitted on the same time-frequency resource may be subjected to an RE mapping manner of an uplink demodulation reference signal or an RE mapping manner of a downlink demodulation reference signal.
- the transmission method performed by the LPN may further include: performing an uplink RE mapping to downlink RE mapping process.
- the transmission method performed by the LPN may further include: performing a downlink RE mapping to an uplink RE mapping process.
- the details of the uplink RE mapping and the downlink RE mapping processing, and the downlink RE mapping to the uplink RE mapping processing are described in the foregoing description, and are not described herein.
- the RE mapping position of the downlink demodulation RS signal may be kept offset from the RE mapping position of the uplink demodulation RS signal.
- the LPN needs to perform uplink silence/low power processing and downlink silence/low power processing before transmitting the uplink and downlink signals.
- the LPN may also notify the eNB to perform downlink silence/low power processing (maintaining silence or low power transmission on the RE of the UE transmitting the downlink demodulation reference signal), and notifying the UE to perform uplink silence/low power. Processing (maintaining silence or low power transmission on the RE of the eNB transmitting the uplink demodulation reference signal).
- downlink silence/low power processing maintaining silence or low power transmission on the RE of the eNB transmitting the uplink demodulation reference signal.
- the LPN simultaneously sends the uplink signal and the downlink signal.
- the LPN needs to notify the UE and the base station to demodulate the reference information (the RE position of the uplink and downlink demodulation reference signals) and the modulation modes of the uplink and downlink signals. So that the UE and the base station are used when the interference is deleted.
- the UE or the base station can determine the multiple access mode of the signal according to whether the received uplink signal or the downlink signal, and whether the IDFT is used.
- the interference signal is a downlink data signal
- the useful signal is an uplink data signal. Therefore, the foregoing second interference cancellation needs to be performed.
- the interference signal is an uplink data signal
- the useful signal is a downlink data signal. Therefore, the foregoing first interference deletion needs to be performed.
- the base station serves as a downlink signal sender, UE1 or LPN1 (UE1/LPN1) as an uplink signal sender, and at the same time, both the eNB and the UE2/LPN2 serve as signal receivers.
- the first multiple access mode is also SC-FDMA
- the second multiple access mode is also OFDMA.
- the uplink and downlink signals transmitted on the same time-frequency resource may use the downlink carrier mapping mode or the uplink carrier mapping mode.
- the eNB determines which carrier mapping mode is used for the uplink and downlink signals transmitted on the same time-frequency resource.
- the UE1/LPN1 When the downlink carrier mapping mode is used, the UE1/LPN1 sends the uplink by default. The signal, therefore, the eNB also needs to inform the UE1/LPN1 to perform continuous/discontinuous spectrum shifting before receiving the communication signal. For UE1/LPN1, before transmitting the uplink signal, it is necessary to perform continuous/discontinuous spectrum shift according to the notification. For the related content of the continuous/discontinuous spectrum shifting, refer to the foregoing description of this document, and no further details are provided here.
- the eNB that is the downlink signal sender needs to perform discontinuous/continuous frequency shifting on the downlink signal before transmitting the downlink signal.
- the UE2/LPN2 receives the downlink signal by default in the following line carrier mapping manner. Therefore, before transmitting the downlink signal, the eNB needs to notify the UE2/LPN2 to receive the signal at the frequency point corresponding to the uplink carrier mapping mode.
- the "receiving communication signal" performed by the UE2/LPN2 may specifically include: (according to the notification of the eNB) receiving the communication signal at a frequency point corresponding to the uplink carrier mapping mode. Similar to the foregoing two scenarios, the second scenario in which the third scenario needs to be optimized is the demodulation reference signal mapping manner.
- the uplink and downlink signals transmitted on the same time-frequency resource may be subjected to an RE mapping manner of an uplink demodulation reference signal or an RE mapping manner of a downlink demodulation reference signal.
- the UE/LPN1 sends the uplink demodulation reference signal by using the RE mapping mode of the uplink demodulation reference signal by default, before receiving the signal, the eNB also It is necessary to notify UE1/LPN1 to perform uplink RE mapping to downlink RE mapping processing. Therefore, before the downlink signal is transmitted, the transmission method performed by the UE1/LPN1 may further include: performing (downward RE mapping to uplink RE mapping processing according to the notification of the eNB).
- the eNB When the uplink signal and the downlink signal both use the RE mapping mode of the uplink demodulation reference signal, the eNB also needs to perform downlink RE mapping to uplink RE mapping processing.
- the specific content of the downlink RE mapping to the uplink RE mapping can be referred to the foregoing description herein, and details are not described herein.
- the RE mapping position of the downlink demodulation RS signal may be kept offset from the RE mapping position of the uplink demodulation RS signal.
- the eNB may also notify the UE1 LPN1 to perform downlink silence/low power processing (maintaining silence or low power transmission on the RE transmitting the downlink demodulation reference signal).
- the eNB performs uplink silence/low power processing (maintaining silence or low power transmission on the RE transmitting the uplink demodulation reference signal).
- the eNB may also notify UE2/LPN2 to perform uplink silence/low power processing as well.
- interference cancellation can also be optimized.
- both the eNB and the UE2/LPN2 need to perform signal demodulation. Therefore, the eNB also needs to notify the UE2/LPN2, demodulate the reference information (RE position of the uplink and downlink demodulation reference signals) and the modulation mode, so that the UE2 /LPN2 is used when interference is removed.
- the eNB or the UE2/LPN2 can determine the multiple access mode of the signal according to whether the received uplink signal or the downlink signal, and whether the IDFT is used. It should be noted that, for the eNB, the interference signal is a downlink data signal, and the useful signal is an uplink data signal. Therefore, the foregoing second interference cancellation needs to be performed. For UE2/LPN2, the interference signal is an uplink data signal, and the useful signal is a downlink data signal. Therefore, the foregoing first interference deletion needs to be performed.
- the related content of the first interference deletion and the second interference deletion may be referred to the foregoing description herein, and details are not described herein.
- the fourth scenario will be introduced below. Still referring to FIG. 7, in the fourth scenario, the first base station (eNB1), the second base station (eNB2), UE1/LPN1 (first UE/first LPN) under eNB1, and UE2/ under eNB2 are involved. LPN2 ((second UE/second LPN)). It should be noted that the first and second are only distinguishing. As can be seen from FIG. 7, the signal receiver includes UE2/LPN2 under eNB1 and eNB2, the downlink signal sender includes eNB2, and the uplink signal sender includes UE1/LPN1.
- eNB1 and eNB2 before transmitting or receiving a signal, eNB1 and eNB2 also need to negotiate to determine a carrier mapping manner and a demodulation reference signal mapping manner. Similar to the foregoing three scenarios, in order to optimize the carrier mapping, the uplink and downlink signals transmitted on the same time-frequency resource may be used in the downlink carrier mapping manner or the uplink carrier mapping manner.
- the UE1/LPN1 sends the uplink signal by default in the uplink carrier mapping mode. Therefore, before receiving the communication signal, the eNB1 needs to notify the UE1/LPN1 to uplink according to the carrier mapping manner determined through negotiation.
- the signal performs continuous/discontinuous frequency shifting.
- the "receiving communication signal" performed by the eNB1 may specifically include: receiving the communication signal at a frequency point corresponding to the downlink carrier mapping mode.
- the eNB2 needs to perform discontinuous/continuous spectrum shifting on the downlink signal according to the carrier mapping manner determined by negotiation before transmitting the downlink signal.
- the UE2/LPN2 receives the downlink signal by default in the following line carrier mapping manner. Therefore, before transmitting the downlink signal, the eNB2 needs to notify the UE2/LPN2 to receive the frequency corresponding to the uplink carrier mapping mode according to the carrier mapping manner determined by the negotiation. Communication signal.
- the "received communication signal" performed by the UE2/LPN2 may specifically include: (according to the notification of the eNB2) receiving the communication signal at a frequency point corresponding to the uplink carrier mapping mode.
- the second scenario in which the fourth scenario needs to be optimized is the demodulation reference signal mapping manner.
- the uplink and downlink signals transmitted on the same time-frequency resource may be subjected to an RE mapping manner of an uplink demodulation reference signal or an RE mapping manner of a downlink demodulation reference signal.
- the eNB1 Before receiving the signal, the eNB1 also needs to notify the UE1/LPN1 to perform the uplink RE mapping to the downlink RE mapping process according to the demodulation reference signal mapping manner determined through negotiation.
- the transmission method performed by the UE1/LPN1 may further include: performing uplink RE mapping to downlink RE mapping processing according to the notification of the eNB1.
- the eNB2 needs to perform the downlink RE mapping to the uplink RE mapping process according to the demodulation reference signal mapping manner determined by the negotiation.
- the RE mapping position of the downlink demodulation RS signal may be kept offset from the RE mapping position of the uplink demodulation RS signal.
- the eNB1 may also notify the UE1/LPN1 to perform downlink silence/low power processing according to the demodulation reference signal mapping manner determined by negotiation; and the eNB2 may perform uplink silence/low power processing according to the demodulation reference signal mapping manner determined by negotiation ( Keep silent or low power transmission on the RE transmitting the uplink demodulation reference signal).
- eNB2 may also notify UE2/LPN2 to also perform uplink silence/low power processing.
- interference cancellation can also be optimized. Since both eNB1 and UE2/LPN2 need to perform signal demodulation in this scenario, eNB2 needs to notify UE2/LPN2, demodulate reference information (RE position of uplink and downlink demodulation reference signals) and modulation mode for UE2/ LPN2 is used when interference is removed.
- the eNB1 or the UE2/LPN2 can determine the multiple access mode of the signal according to whether the received uplink signal or the downlink signal, and whether the IDFT is used. It should be noted that, for eNB1, the interference signal is a downlink data signal, and the useful signal is an uplink data signal. Therefore, the foregoing second interference cancellation needs to be performed. For UE2/LPN2, the interference signal is an uplink data signal, and the useful signal is a downlink data signal. Therefore, the foregoing first interference deletion needs to be performed. The content of the first interference deletion and the second interference deletion can be referred to See the foregoing description of this document, and will not be described here.
- the embodiment of the present invention further provides a transmission device.
- the transmission device 190 may include: a receiving unit 1 for receiving a communication signal.
- the communication signal includes an uplink signal and a downlink signal transmitted on the same time-frequency resource; and the uplink signal and the downlink signal use at least the same carrier mapping manner.
- the uplink number corresponds to the first multiple access mode
- the downlink signal corresponds to the second multiple access mode.
- the interference deletion unit (IC unit) 2 is configured to perform interference cancellation on the communication signal according to the first multiple access mode and the second multiple access mode.
- the transmission device 200 may include: an uplink sending unit 3, configured to send an uplink signal.
- the uplink signal and the downlink signal transmitted on the same time-frequency resource use at least the same carrier mapping manner.
- the transmission apparatus 300 may include: a downlink sending unit 4, configured to send a downlink signal, and the downlink signal is the same as the uplink signal transmitted on the same time-frequency resource. the way.
- the receiving unit 1 may be specifically configured to: receive the communication signal at a frequency point corresponding to the downlink carrier mapping mode.
- the transmission device 200 as an uplink signal sender may further include: a continuous/non-contiguous frequency shifting unit 5, configured to perform a continuous/discontinuous spectrum before the uplink transmitting unit 3 transmits the uplink signal. Move to shift the frequency of the uplink signal to the frequency corresponding to the downlink carrier mapping mode.
- the receiving unit 1 is specifically configured to: receive the communication signal at a frequency point corresponding to the uplink carrier mapping mode.
- the transmission device 300 as a downlink signal sender may further include:
- the discontinuous/continuous frequency shifting unit 6 is configured to perform discontinuous/continuous spectrum shifting before the downlink transmitting unit 4 transmits the downlink signal, so that the frequency of the downlink signal is moved to the frequency point corresponding to the uplink carrier mapping mode.
- the transmission device corresponding to the uplink signal side may further include a first notification unit, configured to notify the signal receiver before the signal receiver sends the uplink signal.
- the signal is received at a frequency point corresponding to the downlink carrier mapping mode.
- the signal receiver may further include a second notification unit for notifying the uplink signal sender to perform continuous/discontinuous frequency shifting before receiving the communication signal.
- the transmission device corresponding to the downlink signal sender may further include a third notification unit, configured to notify the signal receiver before the downlink signal is transmitted, at a frequency corresponding to the uplink carrier mapping mode. receive signal.
- the transmission device corresponding to the signal receiver may further include a fourth notification unit, configured to notify the downlink signal sender to perform the discontinuous/continuous frequency shift before transmitting the downlink signal.
- the signal receiver (eNB1) and the downlink signal sender (eNB2) may further include a negotiating unit for negotiating and determining a carrier mapping manner and a demodulation reference signal mapping manner.
- the above uplink signal and downlink signal can use the same demodulation reference signal mapping method.
- the uplink is used to perform uplink RE mapping and downlink RE mapping processing before the uplink transmitting unit transmits the uplink signal.
- the transmission device 300 corresponding to the downlink signal sender may further include a downlink RE mapping to uplink RE mapping unit, which is configured to send the downlink in the downlink sending unit. Before the signal, perform downlink RE mapping to uplink RE mapping Processing.
- the uplink signal and the downlink signal may also use different demodulation reference signal mapping modes. When different demodulation reference signal mapping modes are used (the RE mapping position of the downlink demodulation RS signal is offset from the RE mapping position of the uplink demodulation RS signal), the transmission device 200 corresponding to the uplink signal sender may further include downlink silence.
- the low power unit is configured to perform downlink silence/low power processing before the sending unit sends the uplink signal
- the transmission device 300 corresponding to the downlink signal sender may further include an uplink silence/low power unit, configured to send in the downlink sending unit. Perform uplink silence/low power processing before the downlink signal.
- the transmission device corresponding to the uplink signal sender may include an uplink signal generating unit. Referring to FIG.
- the uplink signal generating unit includes a continuous channel coding module, an uplink modulation module, a DTF module, and an IDFT module, and further includes/ a discontinuous frequency shifting module (for performing the aforementioned continuous/discontinuous spectrum shifting), a first RE mapping processing module (for performing uplink RE mapping to downlink RE mapping processing or downlink silence/low power processing), continuous/non- Continuous frequency shift module.
- the transmission device corresponding to the downlink signal sender may include a downlink signal generating unit.
- the downlink signal generating unit includes discontinuous/in addition to the conventional channel coding module, the downlink modulation module, and the IDFT module.
- the IC unit 2 may include:
- a DFT module configured to perform a discrete Fourier transform (DTF) on the communication signal to obtain a frequency domain mixed received signal (step S21); and a separation module, configured to separate the uplink demodulation reference signal and the downlink from the frequency domain mixed received signal a demodulation reference signal, and a first data signal including an uplink data signal and a downlink data signal (step S22); a first channel estimation module, configured to perform channel estimation according to the separated uplink demodulation reference signal, to obtain a first channel estimation a value H_a ⁇ (step S231), or performing channel estimation according to the downlink demodulation reference signal to obtain a channel estimation value H_b ⁇ of the interference signal (step S231'); a first channel equalization module, configured to perform channel equalization according to the separated uplink demodulation reference signal and the first data signal, to obtain a first equalization result (step S232), or according to the separated downlink demodulation reference signal and the first Data signal is channel equalized to obtain a second equalization result (step S232
- a first IDFT module configured to perform IDFT on the first equalization result (step S233); and a first demodulation module, configured to solve an uplink modulated signal value after the IDFT according to a modulation mode of the uplink signal Adjusting, obtaining an uplink modulated signal estimated value M_a ⁇ (step S234), or demodulating the second equalized result according to a modulation scheme of the downlink signal to obtain a downlink modulated signal estimated value M_b ⁇ (step S233'); multiplied a module, configured to multiply the uplink modulated signal estimated value by the first channel estimated value to obtain the interference signal estimated value (step S235), or multiply the downlink modulated signal estimated value by the second channel estimated value Obtaining the interference signal estimation value (step S234'); the subtracting module is configured to delete the interference signal estimated value from the first data signal, and obtain the second data signal (step S24); the second channel estimation module is configured to: Performing channel estimation according to the separated downlink demodulation reference signal to obtain a second channel estimation
- a second IDFT module configured to perform IDFT on the first equalization result (step S253,); a second demodulation module, configured to demodulate the second equalization result according to a modulation mode of the downlink signal, to obtain a downlink Demodulating the signal estimated value M_b ⁇ (step S253) or demodulating the first equalized result after the IDFT according to the modulation mode of the uplink signal to obtain an uplink demodulated signal estimated value M_a ⁇ (step S254, ); a second channel decoding module, configured to perform channel decoding on the input signal to obtain data bit 1 (Step S254), or data bit 2 (step S255).
- Figure 26 shows a hardware architecture of the above described transmission device, which may comprise: at least one processor 261, such as a CPU, at least one network interface 264 or other user interface 263, memory 265, at least one communication bus 262.
- Communication bus 262 is used to implement connection communication between these components.
- the transmission timing device 260 optionally includes a user interface 263, a keyboard or a pointing device, such as a trackball, a touchpad or a tactile display.
- Memory 265 may contain high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
- the memory 265 can optionally include at least one storage device located remotely from the aforementioned processor 261.
- memory 265 stores the following elements, executable modules or data structures, or a subset thereof, or their extension set:
- Operating system 2651 which contains various system programs for implementing various basic services and handling hardware-based tasks;
- Application module 2652 which contains various applications for implementing various application services.
- the application module 2652 When acting as a signal receiver, the application module 2652 includes, but is not limited to, the receiving unit 1 and the IC unit 2. For the specific implementation of each module in the application module 2652, refer to the corresponding module in the embodiment shown in FIG. 19, and details are not described herein.
- the processor 261 is used to:
- the interference cancellation is performed on the communication signal according to the first multiple access mode and the second multiple access mode.
- processor 261 can also perform other steps performed by the signal receiver described in the method section of this document, and the refinement of each step, which is not described herein.
- the application module 2652 includes but is not limited to the uplink transmitting unit 3.
- the processor 261 is configured to: transmit an uplink signal by calling a program or instruction stored in the memory 265.
- the uplink signal and the downlink signal transmitted on the same time-frequency resource use at least the same carrier mapping manner.
- the foregoing processor 261 can also perform other steps that can be performed by the uplink signal sender described in the method section of this disclosure, and the refinement of each step, which is not described herein.
- the application module 2652 includes but is not limited to the downlink transmitting unit 4.
- each module in the application module 2652 refer to the corresponding modules in the embodiment shown in FIG. 21 or FIG. 23, and details are not described herein.
- the processor 261 is configured to: send a downlink signal, and use the same carrier mapping manner as the uplink signal transmitted on the same time-frequency resource by using a program or an instruction stored in the memory 265.
- the foregoing processor 261 can also perform other steps that can be performed by the downlink signal sender described in the method section of this disclosure, and the refinement of each step, which is not described herein.
- the various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.
- the description is relatively simple, and the relevant parts can be referred to the method part for description.
- a computer device (which may be a personal computer, server, or network device, etc.) performs the methods of various embodiments of the present invention.
- a computer device which may be a personal computer, server, or network device, etc.) performs the methods of various embodiments of the present invention.
- the above description of the embodiments provided is to enable those skilled in the art to make or use the invention.
- Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14862632.8A EP3059917B1 (en) | 2013-11-12 | 2014-07-22 | Full-duplex transmission in a multi-carrier communication system |
| RU2016123048A RU2644559C2 (ru) | 2013-11-12 | 2014-07-22 | Устройство и способ передачи |
| US15/152,340 US10153851B2 (en) | 2013-11-12 | 2016-05-11 | Transmission method and apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561398.1A CN104639486B (zh) | 2013-11-12 | 2013-11-12 | 传输方法及装置 |
| CN201310561398.1 | 2013-11-12 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15/152,340 Continuation US10153851B2 (en) | 2013-11-12 | 2016-05-11 | Transmission method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015070635A1 true WO2015070635A1 (zh) | 2015-05-21 |
Family
ID=53056731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2014/082694 Ceased WO2015070635A1 (zh) | 2013-11-12 | 2014-07-22 | 传输方法及装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10153851B2 (zh) |
| EP (1) | EP3059917B1 (zh) |
| CN (1) | CN104639486B (zh) |
| RU (1) | RU2644559C2 (zh) |
| WO (1) | WO2015070635A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018024007A1 (zh) * | 2016-08-05 | 2018-02-08 | 华为技术有限公司 | 传输参考信号的方法、相关设备及通信系统 |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160048360A (ko) * | 2014-10-24 | 2016-05-04 | 삼성전자주식회사 | 이동 통신 시스템에서 간섭 측정에 기반한 신호 수신 방법 및 장치 |
| CN112242897B (zh) * | 2015-06-24 | 2022-02-18 | 中兴通讯股份有限公司 | 一种传输信号的方法和装置 |
| CN107370579B (zh) * | 2016-05-11 | 2024-03-01 | 北京华为数字技术有限公司 | 一种信息的发送方法、接收方法、用户设备及基站 |
| US10819388B2 (en) * | 2016-05-12 | 2020-10-27 | Sharp Kabushiki Kaisha | Transmission device, reception device, and communication method |
| CN107888255B (zh) * | 2016-09-30 | 2023-07-14 | 中兴通讯股份有限公司 | 上行参考信号的发送方法、装置及系统,基站和终端 |
| US10476642B2 (en) | 2016-09-30 | 2019-11-12 | Qualcomm Incorporated | Reference signal design |
| EP3536049A1 (en) * | 2016-11-02 | 2019-09-11 | IDAC Holdings, Inc. | Devices, systems and methods for power efficient beam management in wireless systems |
| US10530622B2 (en) | 2016-11-03 | 2020-01-07 | Huawei Technologies Co., Ltd. | Methods and apparatuses for transmitting and receiving uplink reference signals using non-orthogonal sequences |
| JP2020047962A (ja) * | 2017-01-06 | 2020-03-26 | 株式会社Nttドコモ | ユーザ装置及び基地局 |
| CN108289069B (zh) * | 2017-01-09 | 2020-10-16 | 电信科学技术研究院 | 一种参考信号的传输方法、发送端和接收端 |
| CN108366030B (zh) | 2017-01-26 | 2022-09-02 | 华为技术有限公司 | 一种发送载波信息的方法、基站及终端 |
| WO2018137574A1 (zh) * | 2017-01-26 | 2018-08-02 | 华为技术有限公司 | 一种发送载波信息的方法、基站及终端 |
| CN118214530A (zh) | 2017-09-08 | 2024-06-18 | 华为技术有限公司 | 基于序列的信号处理方法及装置 |
| CN110324129B (zh) * | 2018-03-30 | 2020-09-22 | 维沃移动通信有限公司 | 一种上行传输方法及终端 |
| MX2021001509A (es) | 2018-08-09 | 2021-06-23 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Método para la transmision de información, dispositivo terminal y dispositivo de red. |
| US12328273B2 (en) * | 2020-05-13 | 2025-06-10 | Qualcomm Incorporated | Code block-based resource mapping for transmissions with data-modulated demodulation reference signals |
| CN116032695A (zh) * | 2021-10-25 | 2023-04-28 | 华为技术有限公司 | 通信方法及装置 |
| US11736321B2 (en) * | 2022-01-24 | 2023-08-22 | Qualcomm Incorporated | Online spur detection and mitigation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001136A (zh) * | 2006-01-13 | 2007-07-18 | 北京三星通信技术研究有限公司 | 循环移位的子载波映射的设备和方法 |
| CN101350801A (zh) * | 2008-03-20 | 2009-01-21 | 中兴通讯股份有限公司 | 长循环前缀帧结构下行专用导频与物理资源块的映射方法 |
| US20110090854A1 (en) * | 2009-10-15 | 2011-04-21 | Qualcomm Incorporated | Downlink and uplink resource element mapping for carrier extension |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8170487B2 (en) * | 2006-02-03 | 2012-05-01 | Qualcomm, Incorporated | Baseband transmitter self-jamming and intermodulation cancellation device |
| US8798183B2 (en) * | 2007-08-13 | 2014-08-05 | Qualcomm Incorporated | Feedback and rate adaptation for MIMO transmission in a time division duplexed (TDD) communication system |
| CN103209415B (zh) | 2012-01-16 | 2017-08-04 | 华为技术有限公司 | 全双工干扰处理方法和装置 |
| CN103220723B (zh) * | 2012-01-18 | 2016-08-10 | 华为技术有限公司 | 无线通信方法及装置 |
| JP6208409B2 (ja) * | 2012-04-06 | 2017-10-04 | 株式会社Nttドコモ | ユーザ装置及び通信方法 |
| US9143984B2 (en) * | 2012-04-13 | 2015-09-22 | Intel Corporation | Mapping of enhanced physical downlink control channels in a wireless communication network |
| US9331827B2 (en) * | 2012-05-14 | 2016-05-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Enhanced receiver configuration adaptive to cyclic prefix configuration |
| US9294214B2 (en) * | 2013-08-05 | 2016-03-22 | Huawei Technologies Co., Ltd. | Coordinated multipoint (COMP) techniques for reducing downlink interference from uplink signals |
-
2013
- 2013-11-12 CN CN201310561398.1A patent/CN104639486B/zh active Active
-
2014
- 2014-07-22 RU RU2016123048A patent/RU2644559C2/ru active
- 2014-07-22 WO PCT/CN2014/082694 patent/WO2015070635A1/zh not_active Ceased
- 2014-07-22 EP EP14862632.8A patent/EP3059917B1/en active Active
-
2016
- 2016-05-11 US US15/152,340 patent/US10153851B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001136A (zh) * | 2006-01-13 | 2007-07-18 | 北京三星通信技术研究有限公司 | 循环移位的子载波映射的设备和方法 |
| CN101350801A (zh) * | 2008-03-20 | 2009-01-21 | 中兴通讯股份有限公司 | 长循环前缀帧结构下行专用导频与物理资源块的映射方法 |
| US20110090854A1 (en) * | 2009-10-15 | 2011-04-21 | Qualcomm Incorporated | Downlink and uplink resource element mapping for carrier extension |
Non-Patent Citations (1)
| Title |
|---|
| GAO, WENGANG: "Research on Channel Estimation of Long Term Evolution Uplink", CHINA OUTSTANDING MASTER'S DEGREE THESIS, 12 August 2010 (2010-08-12), XP008181295 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018024007A1 (zh) * | 2016-08-05 | 2018-02-08 | 华为技术有限公司 | 传输参考信号的方法、相关设备及通信系统 |
| US11159288B2 (en) | 2016-08-05 | 2021-10-26 | Huawei Technologies Co., Ltd. | Reference signal transmission mapping rule, related device, and communications system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3059917A1 (en) | 2016-08-24 |
| EP3059917A4 (en) | 2016-11-16 |
| CN104639486A (zh) | 2015-05-20 |
| RU2644559C2 (ru) | 2018-02-13 |
| RU2016123048A (ru) | 2017-12-19 |
| US20160254869A1 (en) | 2016-09-01 |
| EP3059917B1 (en) | 2018-09-19 |
| US10153851B2 (en) | 2018-12-11 |
| CN104639486B (zh) | 2018-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015070635A1 (zh) | 传输方法及装置 | |
| CN109152072B (zh) | 一种调度信息传输方法及装置 | |
| CN104125184B (zh) | 一种导频信号的传输方法及设备 | |
| WO2018127202A1 (zh) | 一种传输参考信号的方法以及设备 | |
| CN110830212B (zh) | 一种参考信号发送、接收方法及装置 | |
| WO2013091414A1 (zh) | 一种传输信息的方法、系统及设备 | |
| CN109391403B (zh) | 用于无线信号的发送和接收的方法和装置 | |
| CN107371243B (zh) | 一种资源确定方法、相关设备及系统 | |
| WO2013020491A1 (zh) | 一种导频信号发送方法和设备 | |
| WO2019029326A1 (zh) | 基于序列的信号处理方法及装置 | |
| CN114095140B (zh) | 信号处理方法和设备 | |
| TWI702872B (zh) | 多長zt dft-s-ofdm傳輸 | |
| WO2018126968A1 (zh) | 一种信号发送、接收方法及装置 | |
| WO2014139351A1 (zh) | 一种d2d发现信号的传输方法和设备 | |
| CN104685945A (zh) | 传输定时方法及装置 | |
| CN109451871B (zh) | 一种控制干扰的方法及装置 | |
| WO2018171700A1 (zh) | 数据传输方法、终端设备及接入网设备 | |
| CN104052704B (zh) | 数据发送和接收方法及设备 | |
| CN110166213A (zh) | 参考信号的发送及接收方法、基站、终端、存储介质、系统 | |
| WO2017031667A1 (zh) | 一种通信方法及装置 | |
| WO2017177443A1 (zh) | 上行数据发送接收方法、用户设备和接入网设备 | |
| WO2012142772A1 (zh) | 资源配置方法、响应信号发送方法、基站和用户设备 | |
| CN112543084B (zh) | 一种mbsfn子帧处理方法及装置和基站及用户终端 | |
| WO2026066747A1 (zh) | 通信方法以及通信装置 | |
| WO2025020200A1 (zh) | 一种通信方法、通信装置及计算机可读存储介质 |
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: 14862632 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| REEP | Request for entry into the european phase |
Ref document number: 2014862632 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2014862632 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2016123048 Country of ref document: RU Kind code of ref document: A |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112016010563 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 112016010563 Country of ref document: BR Kind code of ref document: A2 Effective date: 20160510 |