CN108111207B - Information transmission method and device - Google Patents
Information transmission method and device Download PDFInfo
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- CN108111207B CN108111207B CN201711103777.0A CN201711103777A CN108111207B CN 108111207 B CN108111207 B CN 108111207B CN 201711103777 A CN201711103777 A CN 201711103777A CN 108111207 B CN108111207 B CN 108111207B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- 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
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- 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
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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Abstract
The invention provides an information transmission method and device, and belongs to the technical field of communication. The method comprises the following steps: determining K sets of reference demodulation pilot signals associated with the target information; determining the sending resources of K groups of reference demodulation pilot signals; and sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals. The corresponding transmission signal when the information is transmitted is not determined by the receiving weight and the coding weight, but the information transmission is realized by the reference demodulation pilot signal used for channel measurement and/or information demodulation, so that the change information of the reference weight and the coding weight is avoided being additionally informed when the receiving weight and the coding weight are changed, the signaling overhead is saved, and the flexibility is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.
Background
In a wireless communication system, a transmitting end and a receiving end generally adopt multiple antennas for transmitting and receiving to obtain a higher rate. The principle of the multi-antenna technology is that a plurality of characteristics of channels are utilized to form multi-layer transmission matched with the characteristics of the channels, the radiation direction of signals is very targeted, the system performance can be effectively improved, the obvious performance improvement can be obtained on the basis of not increasing the bandwidth and the power, the multi-antenna technology is a very promising technology and is widely applied to the current system. When transmitting with multiple antennas, the signal radiation direction is generally concentrated by precoding, and the number of precoded layers may be greater than or equal to 1. The reference demodulation for multiple antennas can be much more complex relative to common single antenna transmission techniques. In the traditional single-antenna transmission, only the data and the reference demodulation pilot frequency need to be ensured to be relatively adjacent to each other at the time-frequency position on the same antenna. For multi-antenna transmission, the pilot frequency and data are subjected to a precoding process, and the precoding of the reference demodulation pilot frequency and the precoding of the data need to be ensured to be consistent through a physical channel. If the precoding is different, the receiving end can accurately know the linear relation between the logical channel (precoding and physical channel) traversed by the reference demodulation pilot and the logical channel traversed by the data. This notification, which typically requires downlink control signaling, limits flexibility and incurs a large control signaling overhead.
In the early LTE system, Reference demodulation is performed based on CRs (cell specific Reference resource), for example, transmission mode 2 (diversity transmission mode), transmission mode 3 (open-loop spatial multiplexing mode), transmission mode 4 (closed-loop spatial multiplexing mode), transmission mode 5 (single-layer closed-loop precoding mode), transmission mode 6 (multi-user spatial multiplexing mode), etc. are all based on CR for Reference demodulation, such demodulation pilots are designed according to the dimension of a physical channel, the number of ports is generally equal to the number of transmit antennas, and the maximum can be supported to 4 ports; such reference demodulation pilots are not precoded per se, but need to be precoded during data transmission, so that using such demodulation pilots to support MIMO transmission requires signaling of downlink precoding W each time data is sent. Assuming that the CRS experiences a physical channel H, the data experiences H × W, and the CRS cannot be directly used for data reference demodulation. Since this approach would entail significant control overhead to inform W and the precoding needs to be selected from the codebook, it is very inflexible to use the same precoding at full bandwidth for control overhead. This design idea was abandoned in later LTE evolution releases, and a new DMRS (Demodulation Reference Signal) was introduced. The new DMRS design idea is to adopt precoding identical to data, so that the DMRS can change overhead along with the change of the number of layers, and the specific precoding does not need to be notified by using extra signaling and is consistent with the data. What kind of precoding is used is transparent to the terminal, and the number of ports seen by the terminal is generally small, which is much more flexible than the previous method. The patterns of the CRS and DMRS may be shown in fig. 1.
In the related art, downlink precoding used by DMRS-based MIMO transmission in an LTE system has the characteristic of transparency, and for terminal demodulation, only a DMRS port defined on a transmission layer needs to be received and estimated, and the demodulation can be directly used for demodulation, so that a logical channel H W through which pilot frequency and data pass is measured, and the fact that what precoding W is used on a physical channel H, the DMRS and the data is not needed to be known. In this way, the standard complexity is greatly simplified, and the processing of the terminal is simple. It should be noted, however, that the above-mentioned features all build on a basic assumption, namely, transmission/baseband reception using baseband digital precoding. As the number of antennas increases, pure baseband precoding may bring a huge cost, and thus the mixed use of rf precoding and data precoding techniques is a future trend. For a multi-day transceiver system using mixed baseband and rf precoding, the mathematical model can be expressed as:
y＝WBBWRFHFRFFBB+n
in the above model formula, y is the received wireless signal, and the dimensionality is the number Nr of the receiving units RXU; n is interference and noise, and the dimensionality is also the number Nr of receiving units RXU (Receiver Unit); wBBThe dimension of the baseband receiving weight of the receiving end is related to the number Nr of the receiving units RXU and the layer number of data; wRFThe dimensionality of the radio frequency receiving weight of a receiving end is related to the number Nr of receiving units RXU and the number of antenna elements in a receiving antenna group; fBBThe dimension of the baseband precoding weight of the sending end is related to the number Nt of sending units TXU (Transmitter Unit) and the number of data layers; HF (high frequency)RFThe dimension of the radio frequency precoding weight of the sending end is related to the number Nt of receiving units TXU and the number of antenna elements in the sending antenna group.
Due to HFRFAnd FBBMay all result in an optimum WRF，WBBThus, there is a need for additional notification HFRFAnd FBBThe notification may need to be based on a preset codebook, and the design of the codebook, the overhead of the notification signaling, and the reduction of flexibility all bring very obvious limitations to the application of the MIMO technology.
It follows that for a simpler baseband/digital precoding system, the receive and transmit radio frequency weights WRFAnd HFRFAre all preset fixed values (the weight values in the phased array antenna are used for determining the radiation direction of the antenna), soSo as to be relatively simple to analyze; the standardization in the communication system mainly focuses on how to obtain more accurate FBBI.e., WBBCan be designed by the receiving end, generally because of WBBEach time domain symbol can be flexibly and dynamically changed, and for a receiving end, a logical channel (a channel obtained by multiplying a physical channel and a precoding matrix, here, W) is often estimated according to the symbolRFHFRFFBB) The optimal baseband receiving weight is calculated, and then the weight is used for receiving to obtain good performance. Since no matter what data precoding F is used by the transmitting endBBSince the same precoding F is also used for the DMRS pilotsBBTherefore, a logical channel can always be reflected on the demodulation pilot DMRS, so that transmitting the radio frequency/baseband precoding can be transparent to the terminal without informing the terminal.
However, after introducing radio precoding, as radio precoding/receiving weights are generally implemented by phase shifters on radio, a fixed value needs to be set before receiving signals in each time unit, and the radio receiving weights are simultaneously for DMRS pilot and data signals. Compared with the baseband receiving processing process, the difference between the baseband receiving weight and the baseband receiving weight is that the received signal can be firstly cached, and then the signal is processed after the channel estimation is finished, while the implementation cost of the radio frequency precoding is low, and the signal on each antenna array can not be cached and then the signal can not be processed, so that a new problem can occur, namely, the receiving end can not determine the optimal WRF after knowing, and the system containing the variable radio frequency precoding can not have the transparency and the flexibility of precoding selection like the baseband precoding.
HFRFAnd FBBMay all result in an optimum WRF,WBBSo that there is a need for further additional notification HFRFAnd FBBThe notification may need to be based on a preset codebook, and the design of the codebook, the overhead of the notification signaling, and the reduction of flexibility all bring very obvious limitations to the application of the MIMO technology.
Disclosure of Invention
In order to solve the above problems, the present invention provides an information transmission method and apparatus that overcomes or at least partially solves the above problems.
According to a first aspect of the present invention, there is provided an information transmission method, the method comprising:
determining K groups of reference demodulation pilot signals associated with target information, wherein the reference demodulation pilot signals are used for channel measurement and/or information demodulation, and the target information is information to be transmitted;
determining the sending resources of K groups of reference demodulation pilot signals;
and sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals.
According to a second aspect of the present invention, there is provided an information transmission apparatus comprising:
the device comprises a first determining module, a second determining module and a transmitting module, wherein the first determining module is used for determining K groups of reference demodulation pilot signals associated with target information, the reference demodulation pilot signals are used for channel measurement and/or information demodulation, and the target information is information to be transmitted;
a second determining module, configured to determine transmission resources of K sets of reference demodulation pilot signals;
the first sending module is used for sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention as claimed.
Drawings
Fig. 1 is a signal diagram of a CRS and a DMRS according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a multi-day transmitting and receiving system with mixed baseband and rf precoding according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Downlink precoding used by MIMO transmission based on DMRS in the existing LTE system has the characteristic of being very transparent, for terminal demodulation, only a DMRS port defined on a transmission layer needs to be received and estimated, and the downlink precoding can be directly used for demodulation to measure a logical channel H W through which pilot frequency and data pass, and the physical channel H, the DMRS and the data do not need to know what precoding W is used, so that the mode greatly simplifies the standard complexity, and the terminal processing is very simple. However, it should be noted that the above mentioned features are based on a basic assumption that baseband digital precoding is used for transmission/baseband reception. Pure baseband precoding may bring significant cost as the number of antennas increases, and thus the mixed use of rf precoding and data precoding techniques is a trend in the future. A multi-day transmit receive system framework using mixed pre-coding of baseband and radio frequencies is shown in fig. 2.
For a multi-day transmitting and receiving system using mixed pre-coding of baseband and radio frequency, the mathematical model can be expressed as follows:
y＝WBBWRFHFRFFBB+n
in the above model formula, y is the received wireless signal, and the dimensionality is the number Nr of the receiving units RXU; n is interference and noise, and the dimensionality is also the number Nr of receiving units RXU (Receiver Unit); wBBThe dimension of the baseband receiving weight of the receiving end is related to the number Nr of the receiving units RXU and the layer number of data; wRFIs the RF receiving weight, dimension and of the receiving endThe number Nr of the receiving units RXU is related to the number of antenna elements in the receiving antenna group; fBBThe dimension of the baseband precoding weight of the sending end is related to the number Nt of sending units TXU (Transmitter Unit) and the number of data layers; HF (high frequency)RFThe dimension of the radio frequency precoding weight of the sending end is related to the number Nt of receiving units TXU and the number of antenna elements in the sending antenna group.
Due to HFRFAnd FBBMay all result in an optimum WRF，WBBThus, there is a need for additional notification HFRFAnd FBBThe notification may need to be based on a preset codebook, and the design of the codebook, the overhead of the notification signaling, and the reduction of flexibility all bring very obvious limitations to the application of the MIMO technology.
It follows that for a simpler baseband/digital precoding system, the receive and transmit radio frequency weights WRFAnd HFRFThe antenna radiation direction is determined by the weight value in the phased array antenna, so that the antenna radiation direction is simple to analyze; the standardization in the communication system mainly focuses on how to obtain more accurate FBBI.e., WBBCan be designed by the receiving end, generally because of WBBEach time domain symbol can be flexibly and dynamically changed, and for a receiving end, a logical channel (a channel obtained by multiplying a physical channel and a precoding matrix, here, W) is often estimated according to the symbolRFHFRFFBB) The optimal baseband receiving weight is calculated, and then the weight is used for receiving to obtain good performance. Since no matter what data precoding F is used by the transmitting endBBSince the same precoding F is also used for the DMRS pilotsBBTherefore, a logical channel can always be reflected on the demodulation pilot DMRS, so that transmitting the radio frequency/baseband precoding can be transparent to the terminal without informing the terminal.
However, after introducing radio precoding, as radio precoding/receiving weights are generally implemented by phase shifters on radio, a fixed value needs to be set before receiving signals in each time unit, and the radio receiving weights are simultaneously for DMRS pilot and data signals. Compared with the baseband receiving processing process, the difference between the baseband receiving weight and the baseband receiving weight is that the received signal can be firstly cached, and then the signal is processed after the channel estimation is finished, while the implementation cost of the radio frequency precoding is low, and the signal on each antenna array can not be cached and then the signal can not be processed, so that a new problem can occur, namely, the receiving end can not determine the optimal WRF after knowing, and the system containing the variable radio frequency precoding can not have the transparency and the flexibility of precoding selection like the baseband precoding.
HFRFAnd FBBMay all result in an optimum WRF,WBBSo that there is a need for further additional notification HFRFAnd FBBThe notification may need to be based on a preset codebook, and the design of the codebook, the overhead of the notification signaling, and the reduction of flexibility all bring very obvious limitations to the application of the MIMO technology. In view of the problems in the current system, the present invention provides an information transmission method, which can be applied to a transmitting end. Referring to fig. 3, the method includes: 301. determining K sets of reference demodulation pilot signals associated with the target information; 302. determining the sending resources of K groups of reference demodulation pilot signals; 303. and sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals.
The reference demodulation pilot signal is used for channel measurement and/or information demodulation, and the target information is information to be transmitted.
The method provided by the embodiment of the invention determines K groups of reference demodulation pilot signals associated with target information. And determining the transmission resources of the K groups of reference demodulation pilot signals. And sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals. The corresponding transmission signal when the information is transmitted is not determined by the receiving weight and the coding weight, but the information transmission is realized by the reference demodulation pilot signal used for channel measurement and/or information demodulation, so that the change information of the reference weight and the coding weight is avoided being additionally informed when the receiving weight and the coding weight are changed, the signaling overhead is saved, and the flexibility is improved.
As an optional embodiment, when K >1, K groups of reference demodulation pilot frequency correspond to X sending antenna ports and/or sending sectors, and K is larger than or equal to X;
or K groups of reference demodulation pilot frequency correspond to Y receiving antennas and/or sector groups, and K is more than or equal to Y;
or, the K groups of reference demodulation pilots correspond to Z receiving antennas and/or sectors, and simultaneously correspond to Z transmitting antenna ports and/or sector combinations;
or K groups of reference demodulation pilot frequencies correspond to A transmission layers, and K is larger than or equal to A;
or K groups of reference demodulation pilot frequency correspond to B information blocks, and K is larger than or equal to B.
Wherein A, B, X, Y, Z is a natural number of K or less.
As an alternative embodiment, the target information is any one of the following information, including data information, control information, one or more information blocks.
As an optional embodiment, the transmission resource includes N1 to Nk basic resources, where the basic resource is at least one of the following resources, and the following resources include a time domain symbol resource, a sequence resource, and a frequency domain resource. Wherein N1 and N2 … Nk are natural numbers.
As an alternative embodiment, the reference demodulation pilot signals in the same group correspond to the same transmit antenna port and/or sector; or, the reference demodulation pilot signals in the same group correspond to the same receiving antenna port and/or receiving sector; or, the reference demodulation pilot signals within the same group correspond to the same layer; alternatively, the reference demodulation pilot signals within the same group correspond to the same information block.
As an alternative embodiment, the method further comprises:
and sending the value information of K and the value information from N1 to NK to the receiving end based on the signaling or the leader sequence.
As an optional embodiment, the value information of K is determined by one or more of the following information, where the following information includes the number of transmission layers, the number of receiving antenna ports, the number of receiving sectors, the number of transmitting antenna ports, the number of transmitting sectors, the number of information blocks, a preamble sequence, an operating frequency band, an operating bandwidth, the number of subcarriers, a pilot time domain symbol length, and feedback CSI information.
As an optional embodiment, the values of N1 to NK are determined by one or more of the following information, including information transmission mode, demodulation pilot time domain symbol length/subcarrier spacing, value information of K, allocated demodulation pilot and/or time domain resources for transmitting information, time domain symbol length for information transmission, and subcarrier spacing for information transmission.
As an alternative embodiment, the method further comprises:
and configuring receiving indication information for the target information and the K groups of reference demodulation pilot signals so that a receiving end determines the receiving indication information based on the signaling or the leader sequence, wherein the receiving indication information comprises range indication information of a receiving weight, and/or receiving port group indication information, and/or receiving port sector group indication information.
As an alternative embodiment, the transmission basic parameters of at least two groups of demodulation pilots in the K groups of demodulation pilots are configured separately, and the transmission basic parameters include one or more of the following: a time domain symbol length; the number of subcarriers; a subcarrier spacing;
as an optional embodiment, the sending end configures the relationship between K sets of reference demodulation pilot signals and the transmission layer; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the receiving antenna port; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the receiving sector; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the sending antenna port; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the sending sector; and/or the sending end configures the relation between the K groups of reference demodulation pilot frequency and the transmission information block.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
Based on the content of the above embodiments, the embodiments of the present invention provide an information transmission method. Referring to fig. 4, the method is applied to a receiving end, and the method includes: 401. determining configuration information of K groups of reference demodulation pilot signals, wherein the configuration information at least comprises time domain sending symbols; 402. and receiving K groups of reference demodulation pilot signals and target information sent by a sending end based on the configuration information.
In the method provided by the embodiment of the invention, the configuration information of the K groups of reference demodulation pilot signals is determined, and the configuration information at least comprises time domain sending symbols. And receiving K groups of reference demodulation pilot signals and target information sent by a sending end based on the configuration information. The corresponding transmission signal when the information is transmitted is not determined by the receiving weight and the coding weight, but the information transmission is realized by the reference demodulation pilot signal used for channel measurement and/or information demodulation, so that the change information of the reference weight and the coding weight is avoided being additionally informed when the receiving weight and the coding weight are changed, the signaling overhead is saved, and the flexibility is improved.
As an optional embodiment, when K >1, K groups of reference demodulation pilot frequency correspond to X sending antenna ports and/or sending sectors, and K is larger than or equal to X;
or K groups of reference demodulation pilot frequency correspond to Y receiving antennas and/or sector groups, and K is more than or equal to Y;
or, the K groups of reference demodulation pilots correspond to Z receiving antennas and/or sectors, and simultaneously correspond to Z transmitting antenna ports and/or sector combinations;
or K groups of reference demodulation pilot frequencies correspond to A transmission layers, and K is larger than or equal to A;
or K groups of reference demodulation pilot frequency correspond to B information blocks, and K is larger than or equal to B.
Wherein A, B, X, Y, Z is a natural number of K or less.
As an alternative embodiment, the target information is any one of the following information, including data information, control information, one or more information blocks.
As an optional embodiment, the transmission resource includes N1 to Nk basic resources, where the basic resource is at least one of the following resources, and the following resources include a time domain symbol resource, a sequence resource, and a frequency domain resource. Wherein N1 and N2 … Nk are natural numbers.
As an alternative embodiment, the reference demodulation pilot signals in the same group correspond to the same transmit antenna port and/or sector; or, the reference demodulation pilot signals in the same group correspond to the same receiving antenna port and/or receiving sector; or, the reference demodulation pilot signals within the same group correspond to the same layer; alternatively, the reference demodulation pilot signals within the same group correspond to the same information block.
As an alternative embodiment, the method further comprises:
and receiving the value information of K and the value information from N1 to NK sent by the sending end.
As an optional embodiment, the value information of K is determined by one or more of the following information, where the following information includes the number of transmission layers, the number of receiving antenna ports, the number of receiving sectors, the number of transmitting antenna ports, the number of transmitting sectors, the number of information blocks, a preamble sequence, an operating frequency band, an operating bandwidth, the number of subcarriers, a pilot time domain symbol length, and feedback CSI information.
As an optional embodiment, the values of N1 to NK are determined by one or more of the following information, including information transmission mode, demodulation pilot time domain symbol length/subcarrier spacing, value information of K, allocated demodulation pilot and/or time domain resources for transmitting information, time domain symbol length for information transmission, and subcarrier spacing for information transmission.
As an alternative embodiment, the method further comprises:
and determining receiving indication information based on the signaling or the leader sequence, wherein the receiving indication information comprises range indication information of a receiving weight, and/or receiving port group indication information, and/or receiving port sector group indication information.
As an alternative embodiment, the transmission basic parameters of at least two groups of demodulation pilots in the K groups of demodulation pilots are configured separately, and the transmission basic parameters include one or more of the following: a time domain symbol length; the number of subcarriers; a subcarrier spacing;
as an optional embodiment, the sending end configures the relationship between K sets of reference demodulation pilot signals and the transmission layer; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the receiving antenna port; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the receiving sector; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the sending antenna port; and/or the sending end configures the relation between K groups of reference demodulation pilot frequencies and the sending sector; and/or the sending end configures the relation between the K groups of reference demodulation pilot frequency and the transmission information block.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
An embodiment of the present invention provides an information transmission apparatus, which is configured to execute the information transmission method provided in the embodiment corresponding to fig. 3 or fig. 4. Referring to fig. 5, the apparatus includes:
the device comprises a first determining module, a second determining module and a transmitting module, wherein the first determining module is used for determining K groups of reference demodulation pilot signals associated with target information, the reference demodulation pilot signals are used for channel measurement and/or information demodulation, and the target information is information to be transmitted;
a second determining module, configured to determine transmission resources of K sets of reference demodulation pilot signals;
the first sending module is used for sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals.
As an optional embodiment, when K >1, K groups of reference demodulation pilot frequency correspond to X sending antenna ports and/or sending sectors, and K is larger than or equal to X;
or K groups of reference demodulation pilot frequency correspond to Y receiving antennas and/or sector groups, and K is more than or equal to Y;
or, the K groups of reference demodulation pilots correspond to Z receiving antennas and/or sectors, and simultaneously correspond to Z transmitting antenna ports and/or sector combinations;
or K groups of reference demodulation pilot frequencies correspond to A transmission layers, and K is larger than or equal to A;
or K groups of reference demodulation pilot frequency correspond to B information blocks, and K is larger than or equal to B.
As an alternative embodiment, the target information is any one of the following information, including data information, control information, one or more information blocks.
As an optional embodiment, the transmission resource includes N1 to Nk basic resources, where the basic resource is at least one of the following resources, and the following resources include a time domain symbol resource, a sequence resource, and a frequency domain resource.
As an alternative embodiment, the reference demodulation pilot signals in the same group correspond to the same transmit antenna port and/or sector; or, the reference demodulation pilot signals in the same group correspond to the same receiving antenna port and/or receiving sector; or, the reference demodulation pilot signals within the same group correspond to the same layer; alternatively, the reference demodulation pilot signals within the same group correspond to the same information block.
As an alternative embodiment, the apparatus further comprises:
and the second sending module is used for sending the value information of the K and the value information from the N1 to the NK to the receiving end based on the signaling or the leader sequence.
As an optional embodiment, the value information of K is determined by one or more of the following information, where the following information includes the number of transmission layers, the number of receiving antenna ports, the number of receiving sectors, the number of transmitting antenna ports, the number of transmitting sectors, the number of information blocks, a preamble sequence, an operating frequency band, an operating bandwidth, the number of subcarriers, a pilot time domain symbol length, and feedback CSI information.
As an optional embodiment, the values of N1 to NK are determined by one or more of the following information, including information transmission mode, demodulation pilot time domain symbol length/subcarrier spacing, value information of K, allocated demodulation pilot and/or time domain resources for transmitting information, time domain symbol length for information transmission, and subcarrier spacing for information transmission.
As an alternative embodiment, the apparatus further comprises:
and the configuration module is used for configuring receiving indication information for the target information and the K groups of reference demodulation pilot signals so that a receiving end determines the receiving indication information based on the signaling or the leader sequence, wherein the receiving indication information comprises range indication information of a receiving weight, and/or receiving port group indication information, and/or receiving port sector group indication information.
The device provided by the embodiment of the invention determines K groups of reference demodulation pilot signals associated with target information. And determining the transmission resources of the K groups of reference demodulation pilot signals. And sending target information and K groups of reference demodulation pilot signals to the receiving end based on the sending resources, so that the receiving end receives the K groups of reference demodulation pilot signals and the target information based on the configuration information of the K groups of reference demodulation pilot signals. The corresponding transmission signal when the information is transmitted is not determined by the receiving weight and the coding weight, but the information transmission is realized by the reference demodulation pilot signal used for channel measurement and/or information demodulation, so that the change information of the reference weight and the coding weight is avoided being additionally informed when the receiving weight and the coding weight are changed, the signaling overhead is saved, and the flexibility is improved.
Finally, the method of the present application is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103777.0A CN108111207B (en) | 2017-11-10 | 2017-11-10 | Information transmission method and device |
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