WO2017016325A1 - Procédé et appareil de notification et d'acquisition de puissance de pilote - Google Patents

Procédé et appareil de notification et d'acquisition de puissance de pilote Download PDF

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Publication number
WO2017016325A1
WO2017016325A1 PCT/CN2016/085160 CN2016085160W WO2017016325A1 WO 2017016325 A1 WO2017016325 A1 WO 2017016325A1 CN 2016085160 W CN2016085160 W CN 2016085160W WO 2017016325 A1 WO2017016325 A1 WO 2017016325A1
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WIPO (PCT)
Prior art keywords
dmrs
power
receiving end
configuration information
scrambling code
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PCT/CN2016/085160
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English (en)
Chinese (zh)
Inventor
张淑娟
陈艺戬
刘文豪
李儒岳
弓宇宏
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中兴通讯股份有限公司
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Publication of WO2017016325A1 publication Critical patent/WO2017016325A1/fr

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    • 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
    • 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 application relates to, but is not limited to, the field of communications, and in particular, to a pilot power notification, acquisition method and apparatus.
  • the number of antennas at the base station side is increasing, for example, in the full-dimension multiple input multiple output (FD-MIMO) and high frequency communication, the antenna at the base station end
  • the number increases from 8 to 16, 32, 64 or even more.
  • the number of antennas does not increase exponentially, and there are multiple antenna base stations.
  • Many legacy UEs with a small number of antennas can not fully utilize the performance advantages of the number of antennas on the base station side only by single-user multiple input multiple output (SU-MIMO) transmission.
  • SU-MIMO single-user multiple input multiple output
  • MU-MIMO Multiple Input Multiple Output
  • the base station does not completely eliminate the inter-user interference (MUI) through spatial diversity.
  • MUI inter-user interference
  • the MUI interference at the receiving end increases, and the channel estimation performance is greatly reduced.
  • LTE-Rel12 downlink supports 2-layer orthogonal and 2-layer pseudo-orthogonal MU-MIMO.
  • the channel estimation performance will become MU-MIMO. The main bottleneck of performance improvement.
  • DMRS Demodulation Reference Signal
  • the DMRS orthogonal port used for MU-MIMO transmission is still ⁇ 7, 8 ⁇ , only the pseudo-orthogonal extension is achieved by the scrambling code ID:n scid of the DMRS port, and the DMRS power needs to be adjusted as the total number of pairs is increased. , thereby improving channel estimation performance.
  • DMRS enhancement schemes for MU-MIMO as the total number of pairs is increased, the DMRS power can also be appropriately adjusted to improve channel estimation performance.
  • the CSI-RS is boosted.
  • the CSI-RS can be from the idle RE (Resource Element, The resource element) borrows power, and can also borrow power from a High-Speed Physical Downlink Shared Channel (HS-PDSCH) to improve the signal-to-noise ratio (Signal Interference Noise Ratio) during CSI-RS measurement.
  • HS-PDSCH High-Speed Physical Downlink Shared Channel
  • the accuracy of the channel estimation is improved, thereby improving the accuracy of the Precoding Matrix Indicator (PMI)/Channel Quality Indicator (CQI) obtained by the channel estimation, and the transmitting end utilizes
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indicator
  • the improvement of PMI/CQI performance effectively improves the precoding and scheduling rationality of the transmitting end, thereby improving the performance of the MIMO system.
  • the CSI-RS power notification in the related art is notified by higher layer signaling, and the optimal allocation between the non-CSI-RS signal power and the CSI-RS power in real time cannot be realized, thereby affecting system performance.
  • the DMRS power notification method does not well support the problem of advanced MU-MIMO, and the power notification of the CSI-RS cannot achieve the optimal allocation between the non-CSI-RS signal power and the CSI-RS power in real time.
  • the problem has not yet come up with an effective solution.
  • the embodiment of the present invention provides a pilot power notification and acquisition method and device, so as to at least solve the problem that the DMRS power notification method in the related art cannot support the advanced MU-MIMO well, and the power notification of the CSI-RS cannot be implemented in real time.
  • the problem of optimal allocation between non-CSI-RS signal power and CSI-RS power is achieved.
  • a pilot power notification method includes: a transmitting end acquires pilot scrambling code configuration information; and the transmitting end sends the pilot scrambling code configuration information to a receiving end, where The pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the pilot scrambling code configuration information includes demodulation reference signal (DMRS) scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate power between the DMRS and the physical downlink shared channel (PDSCH).
  • DMRS demodulation reference signal
  • PDSCH physical downlink shared channel
  • the pilot scrambling code configuration information includes channel state indication reference signal (CSI-RS) scrambling code configuration information, where the CSI-RS scrambling code configuration information is used to indicate between the CSI-RS and the PDSCH. Power relationship and / or power value of CSI-RS.
  • CSI-RS channel state indication reference signal
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate a power relationship between a CSI-RS and a PDSCH and/or a power value of a CSI-RS. .
  • the pilot scrambling code configuration information includes a DMRS port allocated by the receiving end and scrambling code configuration information corresponding to each DMRS port, where the scrambling code configuration information corresponding to each DMRS port is used to indicate DMRS and The power relationship between the PDSCHs and/or the power value of the DMRSs.
  • the method further includes: the sending end jointly coding the DMRS and the PDSCH power relationship or the power information of the DMRS and the information of at least one of the following: The scrambling code configuration information of the receiving end, the number of PDSCH layers at the receiving end, and the DMRS port indication information of the receiving end.
  • the method further includes:
  • the transmitting end establishes a first mapping relationship between the DMRS scrambling code configuration information and a power relationship between the DMRS and the PDSCH, or establishes a second mapping relationship between the DMRS scrambling code configuration information and the power value of the DMRS ;and / or,
  • the transmitting end establishes a fifth mapping relationship between the DMRS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establishes the DMRS scrambling code configuration information and the power value of the CSI-RS.
  • the sixth mapping relationship ;
  • Each of the first mapping relationship, the second mapping relationship, the third mapping relationship, the fourth mapping relationship, the fifth mapping relationship, and the sixth mapping relationship A condition that satisfies at least one of the following: each of the mapping relationships is a preset mapping relationship; each of the mapping relationships is a mapping relationship that is sent to the receiving end by high layer signaling; each of the mappings The partial mapping relationship in the relationship is a mapping relationship that is set in advance, and the mapping relationship other than the partial mapping relationship in each of the mapping relationships is a mapping relationship that is sent to the receiving end by higher layer signaling.
  • the pilot configuration information is a scrambling code DMRS scrambling code ID (Serambing identity) port: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a Transmission Time Interval (TTI) level. Or a Resource Block Group (RBG) level, or a Physical Resource Block (PRB); wherein the power relationship is a TTI level, which refers to the current transmission period.
  • TTI Transmission Time Interval
  • RBG Resource Block Group
  • PRB Physical Resource Block
  • the power relationship between the DMRS and the PDSCH of the receiving end on all the scheduling subbands is the same, or the DMRS power is the same; the power relationship is RBG level, and refers to each scheduling in the current transmission period.
  • the power relationship between the DMRS and the PDSCH of the receiving end is the same or different, or the DMRS power is the same or different; the power relationship is PRB level, and refers to the DMRS and the DMRS on each scheduling PRB in the current transmission period.
  • the power relationships between PDSCHs are the same or different, or the DMRS powers are the same or different.
  • a method for acquiring a pilot power comprising: receiving, by a receiving end, pilot scrambling code configuration information sent by a transmitting end, where the pilot scrambling code configuration information The pilot power is used to indicate the pilot end; the receiving end acquires the pilot power of the receiving end according to the pilot scrambling code configuration information.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end; the receiving end obtains a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end according to the DMRS scrambling code configuration information.
  • the pilot scrambling code configuration information includes CSI-RS scrambling code configuration information of the receiving end, where the CSI-RS scrambling code configuration information is used to indicate between the CSI-RS and the PDSCH of the receiving end. a power relationship and/or a power value of the CSI-RS of the receiving end; the receiving end obtains a power relationship and/or a relationship between the CSI-RS and the PDSCH of the receiving end according to the CSI-RS scrambling code configuration information. The power value of the CSI-RS at the receiving end.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between a CSI-RS and a PDSCH of the receiving end. And a power value of the CSI-RS of the receiving end; the receiving end obtains a power relationship between the CSI-RS and the PDSCH of the receiving end according to the DMRS scrambling code configuration information and/or a CSI-RS of the receiving end Power value.
  • the pilot scrambling code configuration information is scrambling code configuration information corresponding to each DMRS port of the receiving end, where the scrambling code configuration information corresponding to each DMRS port is used to indicate between the DMRS and the PDSCH. a power relationship and/or a power value of the DMRS of the receiving end; the receiving end obtains a power relationship between the DMRS and the PDSCH of the receiving end according to the scrambling code configuration information corresponding to the DMRS port, and/or the receiving end The power value of the DMRS.
  • the receiving by the receiving end, acquiring the pilot power of the receiving end according to the pilot scrambling code configuration information, where the receiving end passes the DMRS scrambling code configuration information of the receiving end and/or the port of the receiving end, Obtaining a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end.
  • the receiving end acquires the pilot power of the receiving end according to the pilot scrambling code configuration information, where the receiving end is configured according to the DMRS scrambling code configuration information of the receiving end, and the reference scrambling code configuration information and the DMRS and the a mapping relationship between the power relationships between the PDSCHs, the power relationship between the DMRS and the PDSCH and/or the DMRS power value; or the receiving end according to the DMRS scrambling code configuration information of the receiving end and the reference scrambling code
  • the mapping relationship between the configuration information and the DMRS power is obtained, and the power relationship between the DMRS and the PDSCH and/or the DMRS power value is obtained.
  • the receiving end acquiring, according to the DMRS scrambling code configuration information of the receiving end, the DMRS port of the receiving end, and the layer number information of the receiving end, A power relationship between the DMRS and the PDSCH and/or the DMRS power value.
  • the method further includes:
  • the receiving end establishes a first mapping relationship between the DMRS scrambling code configuration information and a power relationship between the DMRS and the PDSCH of the receiving end, or establishes the DMRS scrambling code configuration information and the second power value of the DMRS. Mapping relationship; and/or,
  • Each of the first mapping relationship, the second mapping relationship, the third mapping relationship, the fourth mapping relationship, the fifth mapping relationship, and the sixth mapping relationship A condition that satisfies at least one of the following: each of the mapping relationships is a preset mapping relationship; each of the mapping relationships is a mapping relationship that is sent to the receiving end by high layer signaling; each of the mappings The partial mapping relationship in the relationship is a preset mapping relationship, and the mapping relationship other than the partial mapping relationship in each mapping relationship is a mapping relationship that is sent to the receiving end by using high layer signaling; A mapping relationship is obtained by using a joint coding result of the power indication information of the receiving end and the at least one of the following information in a downlink control information (DCI) command: the pilot scrambling code configuration information, the number of PDSCH layers at the receiving end, and the The DMRS port of the receiving end.
  • DCI downlink control information
  • the pilot configuration information is a scrambling code DMRS scrambling code ID (Serambing identity) port: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a Transmission Time Interval (TTI) level. Or a Resource Block Group (RBG) level, or a Physical Resource Block (PRB); wherein the power relationship is a TTI level, which refers to the current transmission period.
  • TTI Transmission Time Interval
  • RBG Resource Block Group
  • PRB Physical Resource Block
  • the power relationship between the DMRS and the PDSCH of the receiving end on all the scheduling subbands is the same, or the DMRS power is the same; the power relationship is RBG level, and refers to each scheduling in the current transmission period.
  • the power relationship between the DMRS and the PDSCH of the receiving end is the same or different, or the DMRS power is the same or different; the power relationship is PRB level, and refers to the DMRS and the DMRS on each scheduling PRB in the current transmission period.
  • the power relationships between PDSCHs are the same or different, or the DMRS powers are the same or different.
  • a pilot power notification apparatus which is applied to a transmitting end, and includes: an acquiring module, configured to acquire pilot scrambling code configuration information; and a sending module configured to: The code configuration information is sent to the receiving end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and the PDSCH and/or a power value of the DMRS.
  • the pilot scrambling code configuration information includes CSI-RS scrambling code configuration information, where the CSI-RS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH and/or CSI- The power value of the RS.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate a power relationship between a CSI-RS and a PDSCH and/or a power value of a CSI-RS. .
  • the pilot scrambling code configuration information includes a DMRS port allocated by the receiving end and scrambling code configuration information corresponding to each DMRS port, where the scrambling code configuration information corresponding to each DMRS port is used to indicate DMRS and The power relationship between the PDSCHs and/or the power value of the DMRSs.
  • the apparatus when the pilot corresponding to the pilot power is a DMRS, the apparatus further includes: The code module is configured to jointly encode the DMRS and the PDSCH power relationship or the power value of the DMRS with at least one of the following: the scrambling code configuration information of the receiving end, the PDSCH layer of the receiving end, and the DMRS port of the receiving end. Instructions.
  • the device further includes:
  • a first establishing module configured to establish a first mapping relationship between the DMRS scrambling code configuration information and the DMRS and PDSCH power relationship, or establish a second mapping relationship between the DMRS scrambling code configuration information and the power value of the DMRS ;and / or,
  • a second establishing module configured to establish a third mapping relationship between the CSI-RS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establish the CSI-RS scrambling code configuration information and the The fourth mapping relationship of the power values of the CSI-RS; or
  • a third establishing module configured to establish a fifth mapping relationship between the DMRS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establish the DMRS scrambling code configuration information and the CSI-RS a sixth mapping relationship of power values;
  • Each of the first mapping relationship, the second mapping relationship, the third mapping relationship, the fourth mapping relationship, the fifth mapping relationship, and the sixth mapping relationship A condition that satisfies at least one of the following: each of the mapping relationships is a preset mapping relationship; each of the mapping relationships is a mapping relationship that is sent to the receiving end by high layer signaling; each of the mappings The partial mapping relationship in the relationship is a mapping relationship that is set in advance, and the mapping relationship other than the partial mapping relationship in each of the mapping relationships is a mapping relationship that is sent to the receiving end by higher layer signaling.
  • the pilot configuration information is a scrambling code DMRS scrambling code ID (Serambing identity) port: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a Transmission Time Interval (TTI) level. Or a Resource Block Group (RBG) level, or a Physical Resource Block (PRB); wherein the power relationship is a TTI level, which refers to the current transmission period.
  • TTI Transmission Time Interval
  • RBG Resource Block Group
  • PRB Physical Resource Block
  • the power relationship between the DMRS and the PDSCH of the receiving end on all the scheduling subbands is the same, or the DMRS power is the same; the power relationship is RBG level, and refers to each in the current transmission period.
  • the power relationship between the DMRS and the PDSCH of the receiving end is the same or different, or the DMRS power is the same or different; and the power relationship is a PRB level, which refers to the DMRS on each scheduling PRB in the current transmission period.
  • the power relationship with the PDSCH is the same or different, or the DMRS power is the same or different.
  • a pilot power acquiring apparatus is further provided, which is applied to a receiving end, where the apparatus includes: a receiving module, configured to receive pilot scrambling code configuration information sent by a transmitting end, where The pilot scrambling code configuration information is used to indicate the pilot power of the receiving end, and the acquiring module is configured to acquire the pilot power of the receiving end according to the pilot scrambling code configuration information.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end; the acquiring module is configured to obtain a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end according to the DMRS scrambling code configuration information.
  • the pilot scrambling code configuration information includes CSI-RS scrambling code configuration information of the receiving end, where the CSI-RS scrambling code configuration information is used to indicate between the CSI-RS and the PDSCH of the receiving end. a power relationship and/or a power value of the CSI-RS of the receiving end; the acquiring module is configured to obtain a power relationship between the CSI-RS and the PDSCH of the receiving end according to the CSI-RS scrambling code configuration information and/or Or the power value of the CSI-RS at the receiving end.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH of the receiving end. And/or a power value of the CSI-RS of the receiving end; the acquiring module is configured to obtain a power relationship between the CSI-RS and the PDSCH of the receiving end according to the DMRS scrambling code configuration information and/or the receiving end The power value of the CSI-RS.
  • the pilot scrambling code configuration information is scrambling code configuration information corresponding to each DMRS port of the receiving end, where the scrambling code configuration information corresponding to each DMRS port is used to indicate between the DMRS and the PDSCH.
  • the acquiring module is configured to obtain a power relationship between the DMRS and the PDSCH according to the scrambling code configuration information corresponding to the DMRS port, and/or the receiving end The power value of the DMRS.
  • the acquiring module is further configured to: use DMRS scrambling code configuration information of the receiving end And/or the port of the receiving end, the power relationship between the DMRS and the PDSCH of the receiving end and/or the power value of the DMRS of the receiving end is obtained.
  • the acquiring module is further configured to obtain, according to the mapping relationship between the DMRS scrambling code configuration information of the receiving end and the reference scrambling code configuration information and the power relationship between the DMRS and the PDSCH, to obtain the relationship between the DMRS and the PDSCH. a power relationship and/or the DMRS power value; or, according to the DMRS scrambling code configuration information of the receiving end and the mapping relationship between the reference scrambling code configuration information and the DMRS power, the power relationship between the DMRS and the PDSCH is obtained. / or the DMRS power value.
  • the acquiring module is further configured to acquire a power relationship between the DMRS and the PDSCH and/or the DMRS power value according to the DMRS scrambling code configuration information of the receiving end and the DMRS port information of the receiving end.
  • the acquiring module is further configured to acquire a power relationship between the DMRS and the PDSCH and/or the DMRS power value according to the DMRS scrambling code configuration information of the receiving end and the layer number information of the receiving end.
  • the acquiring module is further configured to acquire a power relationship between the DMRS and the PDSCH according to the DMRS scrambling code configuration information of the receiving end, the DMRS port of the receiving end, and the layer number information of the receiving end. Or the DMRS power value.
  • the device further includes:
  • a first establishing module configured to establish a first mapping relationship between the DMRS scrambling code configuration information and a power relationship between the DMRS and the PDSCH of the receiving end, or establish the DMRS scrambling code configuration information and the power value of the DMRS Second mapping relationship; and/or,
  • a second establishing module configured to establish a third mapping relationship between the CSI-RS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establish the CSI-RS scrambling code configuration information and the The fourth mapping relationship of the power values of the CSI-RS; or
  • a third establishing module configured to establish a fifth mapping relationship between the DMRS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establish the DMRS scrambling code configuration information and the CSI-RS a sixth mapping relationship of power values;
  • each of the mapping relationships is a preset mapping relationship;
  • Each of the mapping relationships is a mapping relationship that is sent to the receiving end by using the high-layer signaling;
  • the partial mapping relationship in each of the mapping relationships is a preset mapping relationship;
  • the mapping relationship other than the partial mapping relationship is a mapping relationship that is sent to the receiving end by using the high-layer signaling;
  • each of the mapping relationships passes the power indication information of the receiving end in the downlink control information (DCI) command and at least
  • DCI downlink control information
  • the pilot scrambling code configuration information is a scrambling code ID of the port of the DMRS: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a transmission time interval (TTI) level, or is an RBG level.
  • TTI transmission time interval
  • RBG transmission time interval
  • PRB level PRB level
  • the power relationship is one TTI level, that is, the power relationship between the DMRS and the PDSCH of the receiving end is the same on all the scheduling subbands in the current transmission period, or the DMRS power
  • the power relationship is the RBG level, which means that the power relationship between the DMRS and the PDSCH of the receiving end on each scheduling subband in the current transmission period is the same or different, or the DMRS power is the same or different
  • PRB level which means that the power relationship between the DMRS and the PDSCH on each scheduled PRB in the current transmission period is the same or different, or the DMRS power is the same or different.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.
  • the embodiment of the present invention uses the transmitting end to obtain the pilot scrambling code configuration information; the transmitting end sends the pilot scrambling code configuration information to the receiving end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the problem that the DMRS power notification method in the related art cannot well support the advanced MU-MIMO is solved, and the power notification of the CSI-RS cannot achieve the optimal allocation between the non-CSI-RS signal power and the CSI-RS power in real time.
  • the problem in turn, enables the transmitting end to dynamically adjust the pilot power and improve the flexibility of the configuration of the transmitting end.
  • FIG. 1 is a flowchart of a pilot power notification method according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing the structure of a pilot power notification apparatus according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram (1) of a pilot power notification apparatus according to an embodiment of the present invention.
  • FIG. 4 is a structural block diagram (2) of a pilot power notification apparatus according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for acquiring pilot power according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a pilot power acquiring apparatus according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram (1) of a pilot power acquiring apparatus according to an embodiment of the present invention.
  • FIG. 9 is a resource diagram corresponding to DMRS port 7 and port 9 in a general cyclic prefix (Normal CP) according to an embodiment of the present invention
  • FIG. 10 is a resource diagram corresponding to DMRS port 7 and port 8 when the CP is extended according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a pilot power notification method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step S102 The transmitting end acquires pilot scrambling code configuration information.
  • Step S104 The transmitting end sends the pilot scrambling code configuration information to the receiving end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the transmitting end sends the pilot scrambling code configuration information for indicating the pilot power of the receiving end to the receiving end, which solves the problem that the DMRS power notification method in the related art cannot well support the advanced MU-MIMO, and the CSI.
  • the power notification of the RS cannot achieve the problem of optimal allocation between the power of the non-CSI-RS signal and the power of the CSI-RS in real time, thereby enabling the transmitting end to dynamically adjust the pilot power and improve the flexibility of the configuration of the transmitting end.
  • the pilot scrambling code configuration information includes demodulation reference signal (DMRS) scrambling code configuration information
  • DMRS scrambling code configuration information is used to indicate the power between the DMRS and the physical downlink shared channel (PDSCH). The power value of the relationship and / or DMRS.
  • the pilot scrambling code configuration information includes channel state indication reference signal (CSI-RS) scrambling code configuration information
  • CSI-RS channel state indication reference signal
  • the CSI-RS scrambling code configuration information is used to indicate CSI-RS and Power relationship between PDSCH and/or power value of CSI-RS.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information
  • the DMRS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH and/or a power of the CSI-RS. value.
  • the pilot scrambling code configuration information includes a DMRS port allocated by the receiving end and scrambling code configuration information corresponding to each DMRS port, where the scrambling code configuration information corresponding to each DMRS port is used to indicate The power relationship between the DMRS and the PDSCH and/or the power value of the DMRS.
  • the transmitting end jointly encodes the DMRS and PDSCH power relationship or the DMRS power information with at least one of the following information: the scrambling code configuration of the receiving end Information, the number of PDSCH layers at the receiving end, and DMRS port indication information at the receiving end.
  • the transmitting end establishes a first mapping relationship between the DMRS scrambling code configuration information and a power relationship between the DMRS and the PDSCH of the receiving end, or establishes the DMRS scrambling code configuration information and the power value of the DMRS.
  • the second mapping relationship In another alternative embodiment, The transmitting end establishes a third mapping relationship between the CSI-RS scrambling code configuration information and the power relationship between the CSI-RS and the PDSCH of the receiving end, or establishes the CSI-RS scrambling code configuration information and the power value of the CSI-RS.
  • the fourth mapping relationship is another mapping relationship between the CSI-RS scrambling code configuration information and the power relationship between the CSI-RS and the PDSCH of the receiving end.
  • the transmitting end establishes a fifth mapping relationship between the DMRS scrambling code configuration information and the power relationship between the CSI-RS and the PDSCH of the receiving end, or establishes the DMRS scrambling code configuration information and the CSI- The sixth mapping relationship of the power values of the RS.
  • the first mapping relationship, the second mapping relationship, the third mapping relationship, the fourth mapping relationship, the fifth mapping relationship, and the sixth mapping relationship each satisfy at least one of the following conditions:
  • a mapping relationship is a preset mapping relationship; each mapping relationship is a mapping relationship that is sent to the receiving end through high-level signaling; a partial mapping relationship in each mapping relationship is a preset mapping relationship, and each mapping is A mapping relationship other than the partial mapping relationship in the relationship is a mapping relationship that is sent to the receiving end through high layer signaling.
  • the pilot scrambling code configuration information is a scrambling code ID of the port of the DMRS: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a transmission period transmission time interval (TTI) level, or Resource Block Group (RBG) level, or physical resource block (PRB) level; where the power relationship is a TTI level, refers to the DMRS and PDSCH of the receiving end on all the scheduling subbands in the current transmission period.
  • TTI transmission time interval
  • RBG Resource Block Group
  • PRB physical resource block
  • the power relationship is PRB level, which means that the power relationship between the DMRS and the PDSCH of the receiving end on each scheduling PRB in the current transmission period is the same or different, or the receiving end
  • the DMRS power is the same or different.
  • the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, or by hardware, but in many cases, the former is more Good implementation.
  • the technical solution of the present application which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). ), including a number of instructions to make a terminal device (can be a mobile phone, computer, service)
  • the server, or network device, etc. performs the methods described in various embodiments of the present application.
  • a pilot power notification device is further provided, which is used to implement the foregoing embodiments and optional implementations, and details are not described herein.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the apparatus includes: an obtaining module 22 configured to acquire pilot scrambling code configuration information; and a sending module 24 And transmitting, to the receiving end, the pilot scrambling code configuration information, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the pilot scrambling code configuration information includes demodulation reference signal (DMRS) scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and a physical downlink shared channel (PDSCH) and/or The power value of the DMRS.
  • DMRS demodulation reference signal
  • the pilot scrambling code configuration information includes channel state indication reference signal (CSI-RS) scrambling code configuration information, where the CSI-RS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH. And/or the power value of the CSI-RS.
  • CSI-RS channel state indication reference signal
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information, where the DMRS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH and/or a power value of the CSI-RS.
  • the pilot scrambling code configuration information includes a DMRS port allocated by the receiving end and scrambling code configuration information corresponding to each DMRS port, where the scrambling code configuration information corresponding to each DMRS port is used to indicate the DMRS and the PDSCH.
  • the power relationship between and / or the power value of the DMRS is used to indicate the DMRS and the PDSCH.
  • FIG. 3 is a structural block diagram (1) of a pilot power notification apparatus according to an embodiment of the present invention.
  • the apparatus further includes: an encoding module 32, which is configured.
  • the information indicating the DMRS and the PDSCH power relationship of the receiving end or the power value of the DMRS is jointly coded with the following information: the scrambling code configuration information of the receiving end, the number of PDSCH layers at the receiving end, and the DMRS port indication information of the receiving end.
  • the apparatus further includes: a first establishing module 42, configured to establish a first mapping relationship between DMRS scrambling code configuration information and a DMRS and PDSCH power relationship of the receiving end, or establish the DMRS scrambling code configuration information and the DMRS a second mapping relationship of the power values; and/or, the second establishing module 44 is configured to establish a third mapping relationship between the CSI-RS scrambling code configuration information and the power relationship between the CSI-RS and the PDSCH of the receiving end, or establish The fourth mapping relationship between the CSI-RS scrambling code configuration information and the power value of the CSI-RS; or the third establishing module 46 is configured to establish the DMRS scrambling code configuration information and the CSI-RS and the PDSCH of the receiving end a fifth mapping relationship of the power relationship, or a sixth mapping relationship between the DMRS scrambling code configuration information and the
  • FIG. 5 is a flowchart of a method for acquiring a pilot power according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step S502 The receiving end receives the pilot scrambling code configuration information sent by the sending end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end;
  • Step S504 the receiving end acquires pilot power of the receiving end according to the pilot scrambling code configuration information.
  • the receiving end receives the pilot scrambling code configuration information for indicating the pilot power from the transmitting end, and solves the problem that the DMRS power notification method in the related art cannot well support the advanced MU-MIMO, and the CSI-RS The power notification cannot achieve the problem of optimal allocation between the non-CSI-RS signal power and the CSI-RS power in real time, thereby enabling the transmitting end to dynamically select the pilot power and improve the flexibility of the configuration of the transmitting end.
  • the pilot scrambling code configuration information is DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and the PDSCH of the receiving end and/or the receiving The power value of the DMRS of the terminal; the receiving end obtains the power relationship between the DMRS and the PDSCH of the receiving end and/or the power value of the DMRS of the receiving end according to the DMRS scrambling code configuration information.
  • the pilot scrambling code configuration information is CSI-RS scrambling code configuration information of the receiving end, where the CSI-RS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH of the receiving end. And/or a power value of the CSI-RS of the receiving end; the receiving end obtains a power relationship between the CSI-RS and the PDSCH of the receiving end according to the CSI-RS scrambling code configuration information and/or a power value of the CSI-RS of the receiving end .
  • the pilot scrambling code configuration information is DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information indicates a power relationship between the CSI-RS and the PDSCH of the receiving end and/or a receiving end
  • the power value of the CSI-RS is obtained by the receiving end according to the DMRS scrambling code configuration information, and the power relationship between the CSI-RS and the PDSCH of the receiving end and/or the power value of the CSI-RS of the receiving end.
  • the pilot scrambling code configuration information is scrambling code configuration information corresponding to each DMRS port of the receiving end, where the scrambling code configuration information corresponding to each DMRS port is used to indicate the receiving end DMRS and the PDSCH.
  • the power relationship between the power relationship and/or the DMRS of the receiving end, the receiving end acquires the power relationship between the receiving end DMRS and the PDSCH and/or the power value of the DMRS of the receiving end according to the scrambling code configuration information corresponding to the DMRS port.
  • the receiving end obtains the power relationship between the DMRS and the PDSCH of the receiving end and/or the power value of the DMRS of the receiving end by using the DMRS scrambling code configuration information of the receiving end and/or the port of the receiving end.
  • the receiving end receives the pilot scrambling code configuration information sent by the transmitting end.
  • the receiving end is configured according to the DMRS scrambling code configuration information of the receiving end, and the reference scrambling code configuration information, and the DMRS and the PDSCH.
  • the mapping relationship between the power relationships is obtained, and the power relationship between the DMRS and the PDSCH and/or the DMRS power value is obtained; or the receiving end is configured according to the DMRS scrambling code configuration information of the receiving end and the mapping between the reference scrambling code configuration information and the DMRS power. Relationship, the power relationship between the DMRS and the PDSCH and/or the DMRS power value is obtained.
  • the receiving end receives the pilot scrambling code configuration information sent by the transmitting end.
  • the receiving end acquires the DMRS according to the DMRS scrambling code configuration information of the receiving end and the DMRS port information of the receiving end. Power relationship between PDSCH and/or the DMRS power value.
  • the receiving end receives the pilot scrambling code configuration information sent by the transmitting end, In an optional embodiment, the receiving end acquires a power relationship between the DMRS and the PDSCH and/or the DMRS power value according to the DMRS scrambling code configuration information of the receiving end and the layer number information of the receiving end.
  • the receiving end receives the pilot scrambling code configuration information sent by the transmitting end.
  • the receiving end is configured according to the DMRS scrambling code configuration information of the receiving end, the DMRS port of the receiving end, and the layer of the receiving end. Number information, obtaining a power relationship between the DMRS and the PDSCH and/or a DMRS power value.
  • the receiving end establishes a first mapping relationship between the DMRS scrambling code configuration information and a power relationship between the DMRS and the PDSCH of the receiving end, or establishes the DMRS scrambling code configuration information and the power value of the DMRS. a second mapping relationship; and/or, the receiving end establishes a third mapping relationship between the CSI-RS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establishes the CSI-RS scrambling code configuration information.
  • each mapping relationship is a preset mapping relationship; each mapping relationship is a mapping relationship that is sent to the receiving end by using high layer signaling; each mapping relationship The partial mapping relationship in the mapping relationship is a preset mapping relationship, and the mapping relationship other than the partial mapping relationship in each mapping relationship is a mapping relationship that is sent to the receiving end through the high layer signaling; each mapping relationship is controlled by the downlink.
  • the pilot scrambling code configuration information is a scrambling code ID of the port of the DMRS: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a transmission period transmission time interval (TTI) level, or Resource Block Group (RBG) level, or physical resource block (PRB) level; where the power relationship is a TTI level, refers to all scheduling in the current transmission period
  • TTI transmission time interval
  • RBG Resource Block Group
  • PRB physical resource block
  • the power relationship between the DMRS and the PDSCH is the same or different, or the DMRS power of the receiving end is the same or different; the power relationship is the PRB level, which refers to the DMRS and the PDSCH between the receiving end of each scheduling PRB in the current transmission period.
  • the power relationships are the same or different, or the DMRS power at the receiving end is the same or different.
  • the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, or by hardware, but in many cases, the former is more Good implementation.
  • the technical solution of the present application which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM).
  • the instructions include a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present application.
  • a pilot power acquisition device is also provided in the embodiment, which is used to implement the foregoing embodiments and optional implementations, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural block diagram of a pilot power acquiring apparatus according to an embodiment of the present invention, which is applied to a receiving end.
  • the apparatus includes: a receiving module 62, configured to receive pilot scrambling code configuration information sent by a transmitting end.
  • the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end, and the obtaining module 64 is configured to acquire the pilot power according to the pilot scrambling code configuration information.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the DMRS and the PDSCH of the receiving end and/or a DMRS of the receiving end.
  • the power value, the obtaining module 64 is configured to obtain a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end according to the DMRS scrambling code configuration information.
  • the pilot scrambling code configuration information is CSI-RS scrambling code configuration information of the receiving end, where the CSI-RS scrambling code configuration information indicates a power off relationship between the CSI-RS and the PDSCH of the receiving end.
  • the power value of the CSI-RS of the receiving end, and the acquiring module 64 is configured to obtain a power relationship between the CSI-RS and the PDSCH of the receiving end according to the CSI-RS scrambling code configuration information and/or the receiving end The power value of the CSI-RS.
  • the pilot scrambling code configuration information includes DMRS scrambling code configuration information of the receiving end, where the DMRS scrambling code configuration information is used to indicate a power relationship between the CSI-RS and the PDSCH of the receiving end and/or the receiving end
  • the obtaining module 64 is configured to obtain a power relationship between the CSI-RS and the PDSCH of the receiving end and/or a power value of the CSI-RS of the receiving end according to the DMRS scrambling code configuration information.
  • the pilot scrambling code configuration information is scrambling code configuration information corresponding to each DMRS port of the receiving end, where the scrambling code configuration information corresponding to each DMRS port is used to indicate a power relationship between the DMRS and the PDSCH.
  • the obtaining module 64 is configured to obtain a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end according to the scrambling code configuration information corresponding to the DMRS port.
  • the obtaining module 64 is further configured to obtain a power relationship between the DMRS and the PDSCH of the receiving end and/or a power value of the DMRS of the receiving end by using the DMRS scrambling code configuration information of the receiving end and/or the port of the receiving end.
  • the obtaining module 64 is further configured to obtain a power relationship between the DMRS and the PDSCH according to the DMRS scrambling code configuration information of the receiving end, and the mapping relationship between the scrambling code configuration information and the power relationship between the DMRS and the PDSCH. Or DMRS power value; or, according to the DMRS scrambling code configuration information of the receiving end and the mapping relationship between the reference scrambling code configuration information and the DMRS power, the power relationship between the DMRS and the PDSCH and/or the DMRS power value is obtained.
  • the obtaining module 64 is further configured to obtain a power relationship between the DMRS and the PDSCH and/or the DMRS power value according to the DMRS scrambling code configuration information of the receiving end and the DMRS port information of the receiving end.
  • the obtaining module 64 is further configured to obtain a power relationship between the DMRS and the PDSCH and/or the DMRS power value according to the DMRS scrambling code configuration information of the receiving end and the layer number information of the receiving end.
  • the obtaining module 64 is further configured to obtain the DMRS and the PDSCH according to the DMRS scrambling code configuration information of the receiving end, the DMRS port of the receiving end, and the layer number information of the receiving end.
  • FIG. 7 is a structural block diagram (1) of a pilot power acquiring apparatus according to an embodiment of the present invention.
  • the apparatus further includes: a first establishing module 72, configured to establish the DMRS scrambling code configuration information and the receiving a first mapping relationship between the power relationship between the DMRS and the PDSCH, or a second mapping relationship between the DMRS scrambling code configuration information and the power value of the DMRS; and/or the second establishing module 74 is configured to establish the CSI a third mapping relationship between the power relationship between the CSI-RS and the PDSCH, or a fourth mapping relationship between the CSI-RS scrambling code configuration information and the power value of the CSI-RS; or
  • the third establishing module 76 is configured to establish a fifth mapping relationship between the DMRS scrambling code configuration information and a power relationship between the CSI-RS and the PDSCH, or establish the DMRS scrambling code configuration information and the power value of the CSI-RS.
  • each of the first mapping relationship, the second mapping relationship, the third mapping relationship, the fourth mapping relationship, the fifth mapping relationship, and the sixth mapping relationship meet at least the following One condition: every The mapping relationship is a preset mapping relationship; each of the mapping relationships is a mapping relationship that is sent to the receiving end by using the high layer signaling; the partial mapping relationship in each mapping relationship is a preset mapping relationship, where each The mapping relationship other than the partial mapping relationship in the mapping relationship is a mapping relationship that is sent to the receiving end by the high layer signaling; each of the mapping relationships passes the power indication information of the receiving end in the DCI command and at least one of the following The joint coding result of the information is obtained by: receiving pilot scrambling code configuration information, the number of PDSCH layers at the receiving end, and the DMRS port information of the receiving end.
  • the pilot scrambling code configuration information is a scrambling code ID of the port of the DMRS: n scid information.
  • the power relationship between the receiving end DMRS and the receiving end PDSCH belongs to a transmission time interval (TTI) level, an RBG level, or a PRB level.
  • TTI transmission time interval
  • the power relationship is RBG level, which means that the power relationship between the DMRS and the PDSCH of the receiving end in each scheduling subband in the current transmission period is the same or different, or the DMRS power of the receiving end is the same or different; the power relationship is
  • the PRB level refers to the DMRS of the receiving end on each scheduled PRB in the current transmission period.
  • the power relationships between PDSCHs are the same or different, or the DMRS powers are the same or different.
  • modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are respectively located in multiple processes. In the device.
  • the embodiment of the invention further provides a computer readable storage medium.
  • the computer readable storage medium may be configured to store program code for performing the following steps:
  • Step S1 The transmitting end acquires pilot scrambling code configuration information.
  • step S2 the transmitting end sends the pilot scrambling code configuration information to the receiving end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end.
  • the computer readable storage medium is further arranged to store program code for performing the steps of:
  • Step S3 The receiving end receives the pilot scrambling code configuration information sent by the sending end, where the pilot scrambling code configuration information is used to indicate the pilot power of the receiving end;
  • step S4 the receiving end acquires the pilot power of the receiving end according to the pilot scrambling code configuration information.
  • the computer readable storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), and a mobile device.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor performs the above steps S1 and S2 according to the program code stored in the computer readable storage medium.
  • the processor performs the above steps S3 and S4 according to the program code stored in the computer readable storage medium.
  • FIG. 8 is a MU-MIMO communication model according to an embodiment of the present invention.
  • the base station side eNB
  • the base station side has multiple transmit antennas, which simultaneously transmit PDSCH signals to UE1, UE2, UE3, and UE4 on the same time-frequency resource.
  • Each user receives the target signal and also receives the base station side
  • the signals of other users cause interference, unless the base station side completely eliminates the MUI by beamforming at this time (multi-user interference in the cell.
  • the UE that simultaneously transmits signals to multiple users on the same time-frequency resource on the same time-frequency resource is called MU ( Multi-User), such as UE1, UE2, UE3, and UE4 in Figure 1, but in practice, due to limited feedback and feedback delay, the MUI cannot be completely eliminated, so that as the total number of MUs increases, the MU users Interference seriously affects channel estimation performance, which affects MU system performance.
  • MU Multi-User
  • FIG. 9 is a resource diagram corresponding to DMRS port 7 and port 9 in a general cyclic prefix (Normal CP) according to an embodiment of the present invention, where port ⁇ 7, 8, 11, 13 ⁇ is a first port group, and ports in the port group
  • the reference signal occupies the same RE resource, and different ports are distinguished by different orthogonal codes.
  • the port like ⁇ 9, 10, 12, 14 ⁇ is the second port group, and the reference signals of the ports in the port group occupy the same RE resources. Different ports are distinguished by different orthogonal codes. As shown in FIG. 9, it is the resource occupancy of the reference signal in a DMRS ⁇ 7 ⁇ 14 ⁇ port on a physical resource block pair.
  • FIG. 10 is a resource diagram corresponding to DMRS port 7 and port 8 when the CP is extended according to an embodiment of the present invention.
  • the sending end notifies the receiving end of its DMRS power by the following two steps;
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Step 1 The transmitting end notifies the receiving end of the mapping relationship between the n scid of the DMRS port of the receiving end and its DMRS power.
  • P_List mapping relationship and the value of n scid as shown in a table.
  • the sender constructs Table 1 through the higher layer signaling P_List and the fixed P0 value.
  • the transmitting end and the receiving end have predetermined fixed values for P0 and P1 in Table 1. If there is no high-level signaling notification, the fixed table 1 is used; if there is a high-level signaling notification P_List, the P0, P1 in the table 1 is updated to the corresponding P0, P1 in the P_List of the higher layer notification.
  • Step 2 The transmitting end notifies n scid in the DCI command, and further indicates the foregoing DMRS power of the receiving end.
  • n scid in Table 1 the number of layers of the receiving end itself, and the DMRS port of the receiving end are jointly encoded, and the joint encoding table is as shown in Table 2.
  • the above-mentioned n scid is also used for initializing when the DMRS random sequence is generated at the receiving end. .
  • the DMRS power notification of the receiving end in the second step is that the transmitting end notifies the power difference only by the n scid and the table 1 established in the first step.
  • the sending end obtains the n scid according to the DMRS power of the receiving end, and obtains the result value corresponding to the joint encoding of the three in the DCI command according to the n scid , the number of layers of the receiving end, and the DMRS port of the receiving end.
  • the sending end divides the items in the table 2 into two sets, and the set one is established by n scid in the second table and the first step.
  • Table 1 informs the receiving end of the DMRS power;
  • Set 2 informs the receiving end of the DMRS power by the number of layers in Table 2. Among them, the item marked with n scid in Table 2 belongs to the set one, and the item with no n scid in the second table belongs to the set two.
  • the number of layers in the set two is less than or equal to 2, and the DMRS power of the receiving end is CdB; the number of layers is greater than 2, and the DMRS power of the receiving end is DdB, when the power indicates the power of the receiving end DMRS port and the PDSCH layer corresponding to the DMRS port.
  • Table 1 Mapping of n scid and DMRS power
  • Table 2 A scrambling code, layer number, port joint coding table
  • n scid 0, and the scrambling code is n scid .
  • n scid 0,1 only two values, corresponding to P_List only two values
  • P_List only two values
  • the transmitting end notifies the receiving end of its DMRS power relationship by the following two steps.
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Step 1 The sender notifies the receiver of the n scid of its DMRS port and its DMRS power.
  • P_List mapping relationship and the value of n scid as shown in a table.
  • the sender constructs Table 1 through the higher layer signaling P_List and the fixed P0 value.
  • the transmitting end and the receiving end have predetermined fixed values for P0 and P1 in Table 1. If there is no high-level signaling notification, the fixed table 1 is used; if there is a high-level signaling notification P_List, the P0, P1 in the table 1 is updated to the corresponding P0, P1 in the P_List of the higher layer notification.
  • Step 2 The sender notifies n scid in the DCI command, and establishes the above-mentioned n scid in the table 1, the number of layers of the receiving end itself, and the DMRS port of the receiving end itself in the table 1.
  • the above n scid also continues to be used for initialization when the DMRS random sequence is generated at the receiving end.
  • step 2 the DMRS power notification of the receiving end is used.
  • the transmitting end notifies the power difference only by using n scid and the table 1 established in step 1.
  • the sending end obtains the n scid according to the DMRS power of the receiving end, and obtains the result value corresponding to the joint encoding of the three in the DCI command according to the n scid , the number of layers of the receiving end, and the DMRS port of the receiving end.
  • the sending end divides the items in the table three or four into two sets, and the set one passes the n scid and the three or four in the table.
  • the table 1 established in step 1 notifies the DMRS power of the receiving end; the set 2 notifies the DMRS power of the receiving end by the number of layers in the table three or four.
  • the item labeled n scid in Table 2 belongs to the set one, and the item not marked with n scid in the third or fourth form belongs to the set two.
  • the number of layers in the set two is less than or equal to 2, and the DMRS power of the receiving end is CdB; the number of layers is greater than 2, and the DMRS power of the receiving end is DdB, when the power indicates the power of the receiving end DMRS port and the PDSCH layer corresponding to the DMRS port.
  • Table 3 A scrambling code, layer number, port joint coding table
  • Table 4 A scrambling code, layer number, port joint coding table
  • n scid 0, and the scrambling code is n scid .
  • n scid 0,1 only two values, corresponding to P_List only two values
  • P_List only two values
  • the transmitting end and the receiving end fix the mapping relationship between the n scid and the receiving end DMRS power, as shown in Table 5.
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • the n scid notified in the DCI command is used to find a fixed mapping relationship between the n scid and the receiving end DMRS power, and notify the receiving end of its DMRS power.
  • Table 5 Mapping of n scid and DMRS power
  • the sender combines the n scid of the receiving DMRS port, the number of layers of the receiving end, and the DMRS port of the receiving end, as shown in Table 2.
  • An embodiment of the present embodiment is that the transmitting end notifies the receiving end of the DMRS power only by using the n scid , wherein the sending end searches the table 5 according to the DMRS power of the receiving end to obtain an n scid according to the n scid , the number of layers of the receiving end, and the receiving end.
  • the DMRS port lookup table 2 obtains the result value corresponding to the joint coding of the three in the DCI command.
  • the old receiving end before Rel-12 still determines the power relationship between the DMRS and the PDSCH according to the number of layers, and the new receiving end of the Rel-13 obtains its DMRS power according to n scid and Table 5.
  • the sending end divides the items in the second table into two sets, and the set one uses the n scid in the table two to find the DMRS power of the receiving end by the table five;
  • the number of layers in Table 2 informs the DMRS power of the receiving end.
  • the items marked with n scid in Table 2 belong to the set one, and the items not marked with n scid in the second table belong to the set two.
  • the number of layers in the set two is less than or equal to 2, and the DMRS power of the receiving end is CdB; the number of layers is greater than 2, and the DMRS power of the receiving end is DdB, when the power indicates the power of the receiving end DMRS port and the PDSCH layer corresponding to the DMRS port.
  • n scid 0,1 only two values, corresponding to P_List only two values
  • present application is not an alternative embodiment of the range of possible values for n scid limits.
  • the transmitting end jointly encodes the n scid of the receiving end DMRS port, the number of layers of the receiving end, the DMRS port of the receiving end, and the DMRS power of the receiving end in the DCI command.
  • a joint coding table as shown in Table 6 can be created.
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Table 6 A scrambling code, layer number, port, power joint coding table
  • n scid 0, and the scrambling code is n scid .
  • A, B, C, and D are notified by higher layer signaling, where the P value represents the DMRS power of the receiving end;
  • the transmitting end jointly encodes the n scid of the receiving end DMRS port, the number of layers of the receiving end, the DMRS port of the receiving end, and the DMRS power of the receiving end in the DCI command.
  • a joint coding table as shown in Table 7 can be created.
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Table 7 A scrambling code, layer number, port, power joint coding table
  • n scid 0, and the scrambling code is n scid .
  • A, B, C, and D are notified by higher layer signaling, where the P value represents the DMRS power of the receiving end;
  • a user is allowed to pair different MU users and different MU total layers on each scheduling subband within one transmission period TTI, and the power relationship between the DMRS and the PDSCH is allowed at this time. It is different on each scheduling subband, and it is necessary to inform the power relationship between the DMRS and the PDSCH of each subband.
  • the power relationship between the DMRS and the PDSCH is allowed to be different on each scheduling RB. Power relationship between DMRS and PDSCH of each RB.
  • the receiving end obtains its DMRS power by the following three steps:
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Step 1 The receiving end constructs a mapping table of n scid and its DMRS power in a certain manner, as shown in Table 8.
  • Step 2 The receiving end obtains n scid through the DCI command, according to Table 2, or Table 3, or Table 4;
  • Step 3 The receiving end obtains the DMRS power by searching Table 8 according to the n scid obtained in step 2.
  • Table 8 Mapping of n scid and DMRS power
  • the receiving end constructs a mapping relationship between n scid and DMRS power shown in Table 8 through high layer signaling.
  • the receiving end fixes the mapping relationship between n scid and DMRS power shown in Table 8.
  • the receiving end pre-fixes the mapping relationship between n scid and DMRS power shown in Table 8. If there is a high-level signaling notification E, F value, the receiving end updates E, F in Table 8. value.
  • the receiving end fixes the E value in Table 8 and obtains the F value through high layer signaling.
  • the receiving end obtains its DMRS power by the following three steps:
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • Step 1 The receiving end constructs a mapping table of n scid and its DMRS power in a certain manner, as shown in Table 8, wherein the configuration of Table 8 is as described in Embodiment 7;
  • Step two the receiving end the DCI, to give n-scid receiving end DMRS port, several layers of the receiving end, a set of scid corresponding to joint coding DMRS ports of the three results of the receiving end n, such as in accordance with Form 2 or Form 3, or Form
  • the item labeled n scid belongs to the set one, and the item without the labeled n scid belongs to the set two.
  • Step 2 Obtain its DMRS power. If joint coding obtained in step two belong to the set n scid a result, by jointly encoding result of eight n scid lookup table, to obtain its power DMRS; if obtained in step two jointly encoded result belongs to set two, according to the result of the joint coding
  • the number of receiving end layers obtains its DMRS power, optionally the number of layers is less than or equal to 2, and the DMRS power of the receiving end is CdB; optionally, the number of layers is greater than 2, and the DMRS power of the receiving end is DdB.
  • the receiving end directly obtains the DMRS of the receiving end by using the n scid of the receiving end DMRS port, the number of layers of the receiving end, the DMRS port of the receiving end, and the DMRS power of the receiving end in the DCI command.
  • the power is as shown in Table 6 or Table 7, where ⁇ A, B, C, D ⁇ is fixed, or obtained through high-level signaling, or partially fixed, and partially obtained through high-level signaling.
  • an embodiment of this embodiment represents a difference between a power of a DMRS port of the receiving end and a power of a PDSCH layer corresponding to the port;
  • the DMRS power represents a difference between the power of the DMRS port of the receiving end and the power of the PDSCH of the receiving end;
  • the third embodiment of the present embodiment represents the power value of the DMRS port of the receiving end.
  • the transmitting end notifies the receiving end of its CSI-RS power by the following two steps.
  • an embodiment of this embodiment represents a difference between a power of a CSI-RS of the receiving end and a power of a PDSCH of the receiving end;
  • Another embodiment of this embodiment represents the power value of the CSI-RS at the receiving end.
  • Step 1 The sender notifies the receiver of its CSI-RS The mapping relationship with its CSI-RS power.
  • an implementation manner of this embodiment is that the transmitting end and the receiving end will have all possible
  • Table 9 The mapping relationship of the collection is shown in Table 9.
  • the transmitting end constructs the table IX by the high layer signaling P_List and the fixed P 0 -P M-1 values.
  • the sending end may send the P_List to the receiving end, or may not send, and the transmitting end allocates to the receiving end when not transmitting. It belongs to the set 0 to the set M-1.
  • the transmitting end and the receiving end have predetermined fixed values for P 0 , P 1 , ... P N-1 in the table 9. If there is no high-level signaling, use this fixed table IX; if there is a high-level signaling notification P_List, update P 0 , P 1 , ... P N-1 in Table 9 to the corresponding P in the P_List of the higher layer notification. 0 , P 1 ,...P N-1 .
  • Step 2 The transmitting end notifies through high layer signaling or To serve the cell ID, the CSI-RS power of the receiving end is further indicated.
  • Form 9 Mapping and CSI-RS power mapping
  • the CSI-RS may be an aperiodic CSI-RS. Dynamic notification.
  • the transmitting end notifies the receiving end of its CSI-RS power by the following two steps.
  • an embodiment of this embodiment represents a difference between the power of the CSI-RS at the receiving end and the power of the PDSCH at the receiving end.
  • Another embodiment of this embodiment represents the power value of the CSI-RS at the receiving end.
  • Step 1 The transmitting end notifies the receiving end of the mapping relationship between the n scid corresponding to the DMRS and its CSI-RS power.
  • the transmitting end constructs the table ten through the high layer signaling P_List and the fixed P 0 value.
  • the transmitting end may send the P_List to the receiving end, or may not send.
  • the transmitting end and the receiving end have predetermined fixed values for P 0 and P 1 in the table ten. If there is no higher layer signaling, this fixed table ten is used; if there is a high layer signaling P_List, P 0 , P 1 in Table 10 is updated to the corresponding P 0 , P 1 in the P_List of the higher layer notification.
  • Step 2 The transmitting end notifies n scid in the DCI command, thereby indicating the CSI-RS power.
  • any one of the forms ⁇ 2 to 4, 6 to 7 ⁇ is established, and the above n scid in the table ten, the number of layers of the receiving end, and the DMRS port of the receiving end are jointly coded, and the above n scid further continues. It is used for initialization when the receiving end DMRS random sequence is generated.
  • Table 10 Mapping of n scid and CSI-RS power
  • the CSI-RS may select an aperiodic CSI-RS.
  • the receiving end acquires the CSI-RS power by the following three steps.
  • an embodiment of this embodiment represents a difference between the power of the CSI-RS at the receiving end and the power of the PDSCH at the receiving end.
  • Another embodiment of this embodiment represents the power value of the CSI-RS at the receiving end.
  • Step 1 The receiving end constructs its CSI-RS correspondingly in a certain way. A table of mapping relationship with its CSI-RS power, as shown in Table 9. Further, the receiving end pre-fixes all The set of values is divided.
  • Step 2 The receiving end obtains through high layer signaling. or Is the cell ID.
  • Step 3 The receiving end obtains according to step 2 get The associated set gets its CSI-RS power by looking up Table 9.
  • the receiving end is configured by the high layer signaling configuration table IX.
  • the receiving end is fixed in the form shown in FIG.
  • the mapping relationship between the set and the CSI-RS power is fixed in the form shown in FIG.
  • the receiving end is fixed in advance as shown in Table IX.
  • the mapping relationship between the set and the CSI-RS power if there is a high layer signaling to inform P 0 , P 1 , ... P N-1 values, the receiving end updates the P 0 , P 1 , ... P N-1 values in Table 9.
  • the receiving end fixes the P 0 to P M-1 values in the table IX, and obtains the P M , . . . P N-1 values through the high layer signaling.
  • the CSI-RS may select an aperiodic CSI-RS, Dynamic notification.
  • the receiving end acquires CSI-RS power by the following three steps:
  • Step 1 The receiving end constructs a mapping relationship table between the n scid corresponding to the receiving end DMRS and the CSI-RS power of the receiving end in a certain manner, as shown in Table 10.
  • the CSI-RS power is a power difference between the power of the CSI-RS at the receiving end and the power of the PDSCH at the receiving end, and another implementation of this embodiment.
  • the mode is the absolute value of the CSI-RS power of the receiving end, that is, the power value of the CSI-RS of the receiving end.
  • Step 2 The sender obtains n scid in the DCI command.
  • the above n scid is obtained by the joint coding information of n scid and other information in the DCI command, as shown in any of the tables ⁇ 2 to 4, 6 to 7 ⁇ .
  • Step 3 The receiving end obtains its CSI-RS power by searching Table 10 according to the n scid obtained in step 2.
  • the receiving end constructs a mapping relationship between the n scid and the CSI-RS power shown in Table 10 through the high layer signaling.
  • the receiving end fixes the mapping relationship between the n scid and the CSI-RS power shown in Table 10.
  • the receiving end pre-fixes the mapping relationship between the n scid and the CSI-RS power shown in Table 10, if there is a high-level signaling notification P 0 , P 1 value
  • the receiving end updates the P 0 , P 1 values in Table 10.
  • the receiving end fixes the P 0 value in the table ten, and obtains the P 1 value through the high layer signaling.
  • the CSI-RS may be an aperiodic CSI-RS.
  • the embodiment of the present invention dynamically notifies the CSI-RS power by using the scrambling code configuration information of the CSI-RS or the scrambling code configuration information of the DMRS, and can achieve the non-CSI-RS signal power and the CSI-RS power in real time.
  • Optimal allocation between. Therefore, the channel estimation performance can be improved by improving the power of the DMRS reference signal, thereby improving the performance of the MU-MIMO system.
  • modules or steps of the present application can be implemented by a general-purpose computing device, which can be centralized on a single computing device or distributed over a network of multiple computing devices. They may be implemented by program code executable by the computing device such that they may be stored in the storage device for execution by the computing device and, in some cases, may be performed in a different order than that illustrated herein. Or the steps described, either separately as individual integrated circuit modules, or as a plurality of modules or steps in a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.
  • the embodiment of the present application provides a pilot power notification method, an acquisition method, and a device, which solve the problem that the DMRS power notification method in the related art cannot support the advanced MU-MIMO well, and the power notification of the CSI-RS cannot be achieved in real time.
  • the problem of optimal allocation between the non-CSI-RS signal power and the power of the CSI-RS enables the transmitting end to dynamically adjust the pilot power and improve the flexibility of the configuration of the transmitting end.

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

Abstract

L'invention concerne un procédé de notification de puissance de pilote comprenant les étapes suivantes: une extrémité émettrice acquiert des informations de configuration d'un code embrouillé pilote; l'extrémité émettrice envoie les informations de configuration du code embrouillé pilote à une extrémité réceptrice, et les informations de configuration du code embrouillé pilote sont utilisées pour indiquer la puissance de pilote de l'extrémité réceptrice. Le procédé ci-dessus résout les problèmes rencontrés dans l'état antérieur de la technique, où un procédé de notification de puissance DMRS ne peut pas prendre en charge correctement un MU-MIMO avancé, et où la notification de puissance de CSI-RS ne peut pas réaliser la répartition optimale entre une puissance de signaux hors CSI-RS et une puissance de CSI-RS en temps réel, et permet en outre à l'extrémité émettrice de régler dynamiquement la puissance de pilote pour améliorer la souplesse de la configuration de l'extrémité émettrice.
PCT/CN2016/085160 2015-07-28 2016-06-07 Procédé et appareil de notification et d'acquisition de puissance de pilote WO2017016325A1 (fr)

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CN111294170B (zh) * 2018-12-07 2021-09-14 华为技术有限公司 通信方法、装置及设备
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CN104247359A (zh) * 2012-04-04 2014-12-24 三星电子株式会社 用于支持无线通信系统的高阶多用户多入多出操作的装置及方法
CN104349491A (zh) * 2013-08-08 2015-02-11 中兴通讯股份有限公司 一种物理下行共享信道传输的方法、系统和网络侧设备

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CN104247359A (zh) * 2012-04-04 2014-12-24 三星电子株式会社 用于支持无线通信系统的高阶多用户多入多出操作的装置及方法
US20140204919A1 (en) * 2013-01-24 2014-07-24 Qualcomm Incorporated Multiple power control and timing advance loops during wireless communication
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