CN111147206A - Resource allocation and information sending and receiving method, device and storage medium - Google Patents

Resource allocation and information sending and receiving method, device and storage medium Download PDF

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CN111147206A
CN111147206A CN201811302959.5A CN201811302959A CN111147206A CN 111147206 A CN111147206 A CN 111147206A CN 201811302959 A CN201811302959 A CN 201811302959A CN 111147206 A CN111147206 A CN 111147206A
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pseudo
random sequence
initial value
sequence initial
dmrs
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CN111147206B (en
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李岩
王飞
侯雪颖
金婧
王启星
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Ltd Research Institute
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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
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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 signaling, i.e. of overhead other than pilot signals

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Abstract

The invention discloses a resource allocation and information sending and receiving method, a device and a storage medium, which are used for reducing the peak-to-average ratio of a demodulation reference signal. The resource allocation method comprises the following steps: and determining a pseudo-random sequence initial value of the DMRS, wherein the pseudo-random sequence initial values of the DMRSs transmitted by different CDM groups are different. The information sending method comprises the following steps: and sending pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS to a terminal. The information configuration method comprises the following steps: when multi-user multi-input multi-output MU MIMO pairing is carried out, if a plurality of paired terminals belong to different types, whether different pseudo-random sequence initial values are adopted by a first type terminal and a second type terminal is judged; and if so, determining that DMRS ports from different Code Division Multiplexing (CDM) groups are configured for the first type terminal and the second type terminal. An information receiving method, comprising: and receiving pseudo-random sequence initial value configuration indication information of a demodulation reference signal DMRS sent by a network side.

Description

Resource allocation and information sending and receiving method, device and storage medium
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to an information sending and receiving method, an information sending and receiving apparatus, and a storage medium.
Background
The positions of DMRS sequences of Configuration Type1 in a current Rel-15NR (New Radio, New air interface) mapped to time-frequency resources are shown in fig. 1, where fig. 1 shows time domain 1 symbols, and frequency domain 12 REs (resource elements), that is, Port0 (Port 0) and Port1 are located on 1 RE for transmission, Port2 and Port3 are located on 1 RE for transmission, and Port0/Port1 and Port2/Port3 are in comb-like stagger in the frequency domain. The position of the DMRS sequence of Configuration Type2 in the current Rel-15NR mapped to time-frequency resources is shown in fig. 2.
As can be seen from fig. 1 and 2, when DMRS (Demodulation Reference Signal) ports of different CDM (Code Division Multiplexing) groups (groups) are selected, 2-3 identical DMRS sequences appear in the frequency domain, for example, port0 and port2 are selected, which results in 2 r (0) s appearing in the frequency domain. The current sequence design makes the same sequence appear in the frequency domain, which in turn results in a higher PAPR (Peak to Average power ratio). Especially, when the number of streams RANK is greater than 2, more than 2 ports are selected to transmit the DMRS, so that the same sequence appears in the frequency domain, which results in a high PAPR.
Disclosure of Invention
The embodiment of the invention provides a resource allocation and information sending and receiving method, a device and a storage medium, which are used for reducing the peak-to-average ratio of a demodulation reference signal.
In a first aspect, a resource configuration method is provided, including:
and determining a pseudo-random sequence initial value of the DMRS of the demodulation reference signal, wherein the pseudo-random sequence initial values of the DMRSs transmitted by different Code Division Multiplexing (CDM) groups are different.
Optionally, determining a pseudo-random sequence initial value of the DMRS specifically includes:
to is directed atDMRS transmitted by different CDM groups and using different scrambling code indicators nSCIDThe number determines a pseudo-random sequence initial value of the DMRS.
Optionally, n is in pseudo random sequence initial values of DMRSs transmitted by different CDM groupsSCIDNumber 0 or 1 or 2.
Optionally, an index K is added to a calculation formula of a pseudo random sequence initial value of DMRS, where K denotes a CDM group index.
Optionally, the pseudo-random sequence initial value of the transmission DMRS is determined according to the following method:
Figure BDA0001852855930000021
wherein:
Figure BDA0001852855930000022
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure BDA0001852855930000023
indicates the slot number within one subframe;
l represents an OFDM symbol;
Figure BDA0001852855930000024
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
Optionally, K is determined according to the following formula:
Figure BDA0001852855930000025
wherein: DMRS port denotes DMRS port number; or
K is determined according to the following formula:
Figure BDA0001852855930000026
optionally, the corresponding relationship between the DMRS port number and the index K is: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or
The corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
In a second aspect, an information sending method is provided, including:
and sending pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS to a terminal.
Optionally, the sending, to the terminal, pseudo random sequence initial value configuration indication information of the DMRS specifically includes:
and sending the pseudo-random sequence initial value configuration indication information of the DMRS to the terminal by utilizing Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as that adopted by the second type terminal.
Optionally, when the ports configured by the first type terminal and the second type terminal do not belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used to configure, for the first type terminal, a pseudo-random sequence initial value different from that adopted by the second type terminal.
In a third aspect, another information sending method is provided, including:
and transmitting configuration indication information of an index K in the pseudo-random sequence initial value of the demodulation reference signal DMRS to the terminal, wherein K represents a CDM group index.
Optionally, the sending, to the terminal, configuration indication information of an index K in the pseudo random sequence initial value of the DMRS specifically includes:
and transmitting the configuration indication information of the index K to the terminal by utilizing Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling.
Optionally, the configuration indication information of the index K is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same code division multiplexing, CDM, group, the index K in the calculation formula of the pseudo-random sequence initial value is configured as 0.
In a fourth aspect, an information configuration method implemented by a terminal side is provided, including:
when MU MIMO pairing is carried out, if a plurality of paired terminals belong to different types, whether a first type terminal and a second type terminal adopt different pseudo-random sequence initial values is judged;
and if so, determining that DMRS ports from different Code Division Multiplexing (CDM) groups are configured for the first type terminal and the second type terminal.
In a fifth aspect, an information receiving method is provided, including:
and receiving pseudo-random sequence initial value configuration indication information of a demodulation reference signal DMRS sent by a network side.
Optionally, the receiving of the indication information for configuring the pseudo random sequence initial value of the demodulation reference signal DMRS sent by the network side specifically includes:
and receiving the indication information of the configuration of the pseudo-random sequence initial value of the DMRS sent by the network side by utilizing the radio resource control RRC signaling or the downlink control information DCI signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal with the same pseudo-random sequence initial value.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired do not belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring different pseudo-random sequence initial values for the first type terminal and the second type terminal.
In a sixth aspect, an apparatus for configuring resources is provided, including:
the device comprises a first determination unit and a second determination unit, wherein the first determination unit is used for determining the initial value of the pseudo-random sequence of the DMRS for transmitting the demodulation reference signal DMRS, and the initial value of the pseudo-random sequence of the DMRS transmitted by different code division multiplexing CDM groups is different.
Optionally, the first determining unit is configured to utilize different scrambling code indicators n for DMRSs transmitted by different CDM groups respectivelySCIDThe number determines a pseudo-random sequence initial value of the DMRS.
Optionally, n is in pseudo random sequence initial values of DMRSs transmitted by different CDM groupsSCIDNumber 0 or 1 or 2.
Optionally, an index K is added to a calculation formula of a pseudo random sequence initial value of DMRS, where K denotes a CDM group index.
Optionally, the resource configuration method further includes:
a second determining unit, configured to determine a pseudo-random sequence initial value of the DMRS according to the following method:
Figure BDA0001852855930000051
wherein:
Figure BDA0001852855930000052
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure BDA0001852855930000053
is shown inA slot number within a subframe;
l represents an OFDM symbol;
Figure BDA0001852855930000054
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
Optionally, the resource configuration method further includes:
a third determining unit for determining K according to the following formula:
Figure BDA0001852855930000055
wherein: dmrport denotes DMRS port number; or K is determined according to the following formula:
Figure BDA0001852855930000056
optionally, the corresponding relationship between the DMRS port number and the index K is: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or the corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
A seventh aspect provides an information transmitting apparatus, including:
and a transmitting unit configured to transmit the pseudo random sequence initial value configuration indication information of the DMRS to the terminal.
Optionally, the sending unit is specifically configured to send, to the terminal, pseudo random sequence initial value configuration indication information of the DMRS by using radio resource control RRC signaling or downlink control information DCI signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as that adopted by the second type terminal.
Optionally, when the ports configured by the first type terminal and the second type terminal do not belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used to configure, for the first type terminal, a pseudo-random sequence initial value different from that adopted by the second type terminal.
An eighth aspect provides an information transmitting apparatus comprising:
and a transmitting unit, configured to transmit configuration indication information of an index K in a calculation formula of a pseudo random sequence initial value of a demodulation reference signal DMRS to the terminal, where K represents a CDM group index.
Optionally, the sending unit is configured to send the configuration indication information of the index K to the terminal by using a radio resource control RRC signaling or a downlink control information DCI signaling.
Optionally, the configuration indication information of the index K is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same code division multiplexing, CDM, group, the index K in the calculation formula of the pseudo-random sequence initial value is configured as 0.
In a ninth aspect, there is provided an information configuring apparatus comprising:
the judging unit is used for judging whether the first type terminal and the second type terminal adopt different pseudo-random sequence initial values or not if the plurality of paired terminals belong to different types during MU MIMO pairing;
and a determining unit, configured to determine that DMRS ports from different code division multiplexing, CDM, groups are configured for the first type terminal and the second type terminal when the determination result of the determining unit is yes.
A tenth aspect provides an information receiving apparatus comprising:
and the receiving unit is used for receiving the pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS sent by the network side.
Optionally, the receiving unit is configured to receive pseudo random sequence initial value configuration indication information of the DMRS, which is sent by a network side through radio resource control RRC signaling or downlink control information DCI signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal with the same pseudo-random sequence initial value.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired do not belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring different pseudo-random sequence initial values for the first type terminal and the second type terminal.
In an eleventh aspect, there is provided a communication apparatus comprising: a processor, a memory, and a transceiver; the memory stores computer programs, and the processor is used for reading the programs in the memory and executing the steps of any resource allocation or information sending and receiving method.
In a twelfth aspect, a computer storage medium is provided, where the computer storage medium stores computer-executable instructions for causing the computer to perform the steps of any one of the resource allocation methods or the information sending and receiving methods.
In the resource allocation and information sending and receiving method, device and storage medium provided by the embodiment of the invention, when the network side allocates the pseudo random sequence initial values of the DMRS for the terminal, the pseudo random sequence initial values of the DMRS transmitted by different CDM groups are different, and the terminal is notified by the pseudo random sequence initial value allocation indication information, so that the same sequence in the frequency domain can be avoided, and the peak-to-average ratio is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram illustrating a position of a time-frequency resource mapped by a DMRS sequence of Configuration Type1 in the prior art;
fig. 2 is a schematic diagram illustrating a position of a time-frequency resource mapped by a DMRS sequence of Configuration Type2 in the prior art;
fig. 3 is a schematic diagram of a location of a first DMRS sequence mapped to a time-frequency resource according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a location where a second DMRS sequence is mapped to a time-frequency resource according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating different initial values of pseudo-random sequences configured for different CDM groups according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating an implementation flow of an information configuration method according to an embodiment of the present invention;
fig. 7 is a schematic view of an interaction flow between a base station and a terminal according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
In order to avoid the occurrence of identical sequences in frequency domains and reduce peak-to-average power ratio, embodiments of the present invention provide a resource allocation method, an information transmission and reception method, an apparatus, and a storage medium.
First, some terms related to the embodiments of the present invention are explained to facilitate understanding by those skilled in the art.
Furthermore, the terms "first," "second," and the like in the description and in the claims, and in the drawings, in the embodiments of the invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein.
Reference herein to "a plurality or a number" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
In order to solve the problem that the same DMRS sequence appears in the continuous time domain, the embodiment of the present invention provides two improvement methods for a REL-16 terminal, where the improvement method 1 is to change a generation formula of the DMRS sequence, and specifically includes the following steps:
if the precoding is not convertible, generating a DMRS sequence according to the following formula:
Figure BDA0001852855930000091
Figure BDA0001852855930000092
k′＝0,1
Figure BDA0001852855930000093
n＝0,1,…
j＝0,1,…,v-1
if transition precoding is enabled, a DMRS sequence may be generated according to the following formula:
Figure BDA0001852855930000094
k＝4n+2k′+Δ
k′＝0,1
Figure BDA0001852855930000095
n＝0,1,…
wherein, wf(k′)，wt(l'), the Δ values are shown in table 1 and table 2, where table 1 is the parameter values corresponding to Configuration type1, and table 2 is the parameter values corresponding to Configuration type 2. w is af(k') defines a Frequency-Domain-Orthogonal Cover Code (FD-OCC) for DMRS, k representing a Frequency-Domain position. w is at(l') defines a Time Domain-Orthogonal cover code (TD-OCC) for DMRS, l represents a Time Domain position. Δ defines a Code Division multiplexing Group (CDM Group).
TABLE 1
Figure BDA0001852855930000101
TABLE 2
Figure BDA0001852855930000102
The method 1 is improved so that the DMRS sequence r (k) is determined by the frequency domain position, as shown in fig. 3, and such a configuration makes the frequency domain not have the same sequence, thereby solving the problem of high PAPR.
In the improved method 2, different pseudo-random sequence initial values are configured for different CDM groups (CDM groups), that is, when the base station determines the pseudo-random sequence initial values of the DMRS, different pseudo-random sequence initial values are configured for the DMRS sequences transmitted by different CDM groups. For example, the initial value of the pseudo-random sequence of CDM Group0 (including port0 (port 0) and port1 (port 1)) is r (2n + k '), and the initial value of the pseudo-random sequence of CDMGroup1 is r ' (2n + k ', as shown in fig. 4), so that the frequency domain is guaranteed not to have the same sequence, and the problem of high PAPR can be solved.
In a specific implementation, the base station may determine the pseudo-random sequence initial value of the DMRS according to any one of the following manners:
first embodiment, DMRSs transmitted for different CDM groups are respectively transmitted using different nSCIDThe (scrambling code indicator) number determines the pseudo-random sequence initial value of the DMRS. In specific implementation, n in pseudo random sequence initial values of DMRSs transmitted by different CDM groupsSCIDNumber 0 or 1 or 2. For example, it is determined that SCID number in the pseudo random sequence initial value of the DMRS transmitted by CDM group0 is 0, SCID number in the pseudo random sequence initial value of the DMRS transmitted by CDM group1 is 1, and SCID number in the pseudo random sequence initial value of the DMRS transmitted by CDM group 2 is 2; and/or determining that the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group0 is 1, the SCID (scrambling code indicator) number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group1 is 0, and the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group 2 is 2; and/or determining that the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group0 is 2, the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group1 is 1, and the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group 2 is 0; and/or configuring that the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group0 is 2, the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group1 is 0, and the SCID number in the pseudo-random sequence initial value of the DMRS transmitted by the CDM group 2 is 1.
The second embodiment is to add an index K to a calculation formula of an initial value of a pseudo random sequence of the DMRS, where K represents a CDM group index.
In specific implementation, the pseudo-random sequence initial value of the DMRS may be determined according to the following method:
Figure BDA0001852855930000111
wherein:
cinitrepresenting a pseudo-random sequence initial value;
Figure BDA0001852855930000112
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure BDA0001852855930000113
indicates the slot number within one subframe;
l represents an OFDM symbol;
Figure BDA0001852855930000121
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
Specifically, K may be determined according to the following formula:
Figure BDA0001852855930000122
wherein: DMRS port denotes the DMRS port number, mod 6 denotes the remainder divided by 6,
Figure BDA0001852855930000123
indicating a rounding down.
Alternatively, K is determined according to the following formula:
Figure BDA0001852855930000124
mod 6 denotes the division by 6 to get the remainder,
Figure BDA0001852855930000125
indicating rounding up.
Specifically, the corresponding relationship between the DMRS port number and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or
The corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
However, in the two improved methods, when the UE (User Equipment) of REL-15 and the UE of REL-16 are paired in MU-MIMO (Multi-User Multiple-Input Multiple-Output), DMRS sequences of the two versions of UEs are different, so that the channel cannot be estimated.
In view of this, for an MU-MIMO application scenario, an embodiment of the present invention further provides an information sending method, where when a base station performs MU MIMO pairing, if a plurality of paired terminals belong to different types, for example, one terminal belongs to Rel-15 version and one terminal belongs to Rel-16 version, the base station sends pseudo random sequence initial value configuration indication information of a DMRS to the terminals. When the ports configured by the first type terminal and the second type terminal belong to the same CDM (code division multiplexing) group, the pseudo-random sequence initial value configuration indication information is used for indicating that the first type terminal and the second type terminal adopt the same pseudo-random sequence initial value. When the ports configured by the first type terminal and the second type terminal do not belong to the same CDM group, the pseudo-random sequence initial value configuration indication information is used for configuring different pseudo-random sequence initial values for the first type terminal and the second type terminal.
In a specific implementation, the base station may send the pseudo random sequence initial value configuration indication information of the DMRS to the terminal by using RRC (radio resource control) signaling or DCI (downlink control information) signaling.
For example, of the two paired terminals, port0 for the Rel-16 version and port1 for the Rel-15 version, where port0 belongs to CDM 0 and port1 also belongs to port0, that is, the ports of the two paired terminals transmitting DMRS belong to the same CDM group, the UE of the base station that can configure Rel-16 and the UE of Rel-15 may use the same pseudo-random sequence initial value through RRC signaling or DCI signaling.
For another example, of the two paired terminals, port2 for the terminal of Rel-16, and port0 for the terminal of Rel-15, that is, the ports of the two paired terminals transmitting DMRS do not belong to the same CDM group, where port2 belongs to CDM 1 and port1 belongs to port0, that is, the ports of the two paired terminals transmitting DMRS do not belong to the same CDM group, the base station may configure the terminal of Rel-16 and the terminal of Rel-15 to use different pseudo-random sequence initial values through RRC signaling or DCI signaling, as shown in fig. 5.
In specific implementation, an embodiment of the present invention provides an information sending method, including the following steps: and transmitting configuration indication information of an index K in the pseudo random sequence initial value of the DMRS to the terminal, wherein the K represents a CDM group index.
In one embodiment, the configuration indication information of the index K in the pseudo random sequence initial value of the DMRS may be transmitted to the terminal using RRC signaling or DCI signaling.
In specific implementation, the configuration indication information of the index K in the initial value of the pseudorandom sequence is sent when multiple paired terminals belong to different types during MU MIMO pairing. Specifically, when the ports configured by the first type terminal and the second type terminal belong to the same CDM group, the index K in the pseudo random sequence initial value is configured as 0.
In another embodiment, the present invention further provides an information configuring method, as shown in fig. 6, which may include the following steps:
s61, when MU MIMO pairing is carried out, if a plurality of paired terminals belong to different types, whether different pseudo-random sequence initial values are adopted by the first type terminal and the second type terminal is judged.
And S62, when the judgment result is yes, determining that the first type terminal and the second type terminal are configured with DMRS ports from different CDM groups.
In this embodiment, when the base station determines that the paired terminals belong to different types and adopt different pseudo-random sequence initial values, it is determined that the ports from different CDM groups are configured for the paired terminals to transmit DMRS.
Correspondingly, the embodiment of the invention also provides an information receiving method implemented by the terminal side, and the terminal receives the indication information of the pseudo random sequence initial value configuration of the DMRS sent by the network side.
Specifically, the pseudo-random sequence initial value configuration indication information of the DMRS transmitted by the network side using RRC signaling or DCI signaling may be received.
In specific implementation, the configuration indication information of the initial value of the pseudorandom sequence is sent when a plurality of paired terminals belong to different types during MU MIMO pairing.
The pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal which are paired belong to the same CDM group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal to adopt the same pseudo-random sequence initial value. Or, the pseudo random sequence initial value configuration indication information is sent when the ports configured for the first type terminal and the second type terminal which are paired do not belong to the same CDM group, and the pseudo random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal with different pseudo random sequence initial values.
For better understanding of the embodiment of the present invention, the following describes an implementation process of the embodiment of the present invention with reference to an interaction flow between a base station and a terminal, as shown in fig. 7, which may include the following steps:
and S71, the base station determines the initial value of the pseudo-random sequence of the DMRS.
In particular implementation, to reduce PAPR, the base station may determine different initial values of the pseudo-random sequence for different CDM groups transmitting DMRS.
S72, when MU MIMO pairing is carried out, if the paired terminals belong to different types, the base station sends the pseudo-random sequence initial value configuration indication information of DMRS to the terminals.
In this step, for an MU MIMO application scenario, when a base station performs MU MIMO pairing, if paired terminals belong to different types, for example, one paired terminal belongs to a Rel-16 version terminal and one paired terminal belongs to a Rel-15 version terminal, under such a situation, the base station needs to determine whether ports of the paired terminals transmitting DMRS belong to the same CDM group, and if so, the base station instructs the Rel-16 version terminal to fallback to the port using the same pseudorandom sequence initial value as the Rel-15 version terminal through the pseudorandom sequence initial value configuration indication information, and if the paired terminals transmitting DMRS do not belong to the same CDM group, the base station instructs the Rel-16 version terminal and the Rel-15 version terminal to use different pseudorandom sequence initial values through the pseudorandom sequence initial value configuration indication information.
That is, when the ports configured by the first type terminal and the second type terminal belong to the same CDM group, the pseudo random sequence initial value configuration indication information is used to configure the first type terminal with the same pseudo random sequence initial value as that adopted by the second type terminal, and when the ports configured by the first type terminal and the second type terminal do not belong to the same CDM group, the pseudo random sequence initial value configuration indication information is used to configure the first type terminal with the different pseudo random sequence initial value as that adopted by the second type terminal.
In specific implementation, the base station may send the pseudo-random sequence initial value configuration indication information to the terminal by using RRC signaling or DCI signaling.
Based on the same inventive concept, the embodiment of the present invention further provides a resource configuration device, an information sending and receiving device, and an information configuration device, and because the principle of solving the problem of the above devices is similar to that of the resource configuration method, the information sending and receiving method, and the information configuration method, the implementation of the above devices can refer to the implementation of the method, and repeated details are not repeated.
An embodiment of the present invention provides a resource allocation apparatus, including:
the device comprises a first determination unit and a second determination unit, wherein the first determination unit is used for determining the initial value of the pseudo-random sequence of the DMRS for transmitting the demodulation reference signal DMRS, and the initial value of the pseudo-random sequence of the DMRS transmitted by different code division multiplexing CDM groups is different.
Optionally, the first determining unit is configured to utilize different scrambling code indicators n for DMRSs transmitted by different CDM groups respectivelySCIDThe number determines the initial value of the pseudo-random sequence for each CDM group.
Optionally, n is in pseudo random sequence initial values of DMRSs transmitted by different CDM groupsSCIDNumber 0 or 1 or 2.
Optionally, an index K is added to a calculation formula of a pseudo random sequence initial value of DMRS, where K denotes a CDM group index.
Optionally, the resource configuration method further includes:
a second determining unit, configured to determine a pseudo-random sequence initial value corresponding to each CDM group for transmitting the DMRS according to the following method:
Figure BDA0001852855930000161
wherein:
Figure BDA0001852855930000162
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure BDA0001852855930000163
indicates the slot number within one subframe;
l represents an OFDM symbol;
Figure BDA0001852855930000164
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
Optionally, the resource configuration method further includes:
a third determining unit for determining K according to the following formula:
Figure BDA0001852855930000165
wherein: dmrport denotes DMRS port number; or K is determined according to the following formula:
Figure BDA0001852855930000166
optionally, the corresponding relationship between the DMRS port number and the index K is: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or the corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
An embodiment of the present invention provides an information sending apparatus, including:
and a transmitting unit configured to transmit the pseudo random sequence initial value configuration indication information of the DMRS to the terminal.
Optionally, the sending unit is specifically configured to send, to the terminal, pseudo random sequence initial value configuration indication information of the DMRS by using radio resource control RRC signaling or downlink control information DCI signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as that adopted by the second type terminal.
Optionally, when the ports configured by the first type terminal and the second type terminal do not belong to the same code division multiplexing, CDM, group, the pseudo-random sequence initial value configuration indication information is used to configure, for the first type terminal, a pseudo-random sequence initial value different from that adopted by the second type terminal.
An embodiment of the present invention provides an information sending apparatus, including:
and a transmitting unit, configured to transmit configuration indication information of an index K in a calculation formula of a pseudo random sequence initial value of a demodulation reference signal DMRS to the terminal, where K represents a CDM group index.
Optionally, the sending unit is configured to send the configuration indication information of the index K to the terminal by using a radio resource control RRC signaling or a downlink control information DCI signaling.
Optionally, the configuration indication information of the index K is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, when the ports configured by the first type terminal and the second type terminal belong to the same CDM group, the index K in the pseudo random sequence initial value is configured as 0.
An embodiment of the present invention provides an information configuration apparatus, including:
the judging unit is used for judging whether the first type terminal and the second type terminal adopt different pseudo-random sequence initial values or not if the plurality of paired terminals belong to different types during MU MIMO pairing;
and a determining unit, configured to determine that DMRS ports from different code division multiplexing, CDM, groups are configured for the first type terminal and the second type terminal when the determination result of the determining unit is yes.
An embodiment of the present invention provides an information receiving apparatus, including:
and the receiving unit is used for receiving the pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS sent by the network side.
Optionally, the receiving unit is configured to receive pseudo random sequence initial value configuration indication information of the DMRS, which is sent by a network side through radio resource control RRC signaling or downlink control information DCI signaling.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multi-user multiple-input multiple-output (MUMIMO) pairing.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal with the same pseudo-random sequence initial value.
Optionally, the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired do not belong to the same code division multiplexing, CDM, group, and the pseudo-random sequence initial value configuration indication information is used for configuring different pseudo-random sequence initial values for the first type terminal and the second type terminal.
For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same or in multiple pieces of software or hardware in practicing the invention.
Based on the same technical concept, the embodiment of the present application further provides a communication device, which can implement the method in the foregoing embodiment.
Referring to fig. 8, a schematic structural diagram of a communication device according to an embodiment of the present invention is shown in fig. 8, where the communication device may include: a processor 801, a memory 802, a transceiver 803, and a bus interface.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations. The transceiver 803 is used for receiving and transmitting data under the control of the processor 801.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 802, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.
The processes disclosed in the embodiments of the present invention can be applied to the processor 801 or implemented by the processor 801. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 801. The processor 801 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the BWP switching method based on the downlink control signaling disclosed in the embodiments of the present invention may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802, and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 801 is configured to read a program in a memory and execute any step of any one of the methods described above.
Based on the same technical concept, the embodiment of the application also provides a computer storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform any of the steps of any of the methods described above.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (46)

1. A method for resource allocation, comprising:
and determining a pseudo-random sequence initial value of the DMRS of the demodulation reference signal, wherein the pseudo-random sequence initial values of the DMRSs transmitted by different Code Division Multiplexing (CDM) groups are different.
2. The method of claim 1, wherein determining the pseudo-random sequence initial value of the DMRS specifically comprises:
utilizing different scrambling code indicators n for DMRS transmitted by different CDM groupsSCIDThe number determines a pseudo-random sequence initial value of the DMRS.
3. The method of claim 2, wherein n is a pseudo-random sequence initial value of DMRSs transmitted with different CDM groupsSCIDNumber 0 or 1 or 2.
4. The method of claim 1, wherein an index K is added in a calculation formula of a pseudo random sequence initial value of DMRS, wherein K denotes a CDM group index.
5. The method of claim 4, wherein the pseudo-random sequence initial value of the DMRS is determined according to the following method:
Figure FDA0001852855920000011
Figure FDA0001852855920000012
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure FDA0001852855920000013
indicates the slot number within one subframe;
l represents an OFDM symbol;
Figure FDA0001852855920000014
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
6. A method according to claim 4 or 5, wherein K is determined according to the following formula:
Figure FDA0001852855920000015
wherein: DMRS port denotes DMRS port number; or
K is determined according to the following formula:
Figure FDA0001852855920000016
7. the method according to claim 4 or 5, wherein the corresponding relation of the DMRS port number and the index K is: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or
The corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
8. An information transmission method, comprising:
and sending pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS to a terminal.
9. The method of claim 8, wherein transmitting pseudo-random sequence initial value configuration indication information for the DMRS to the terminal specifically comprises:
and sending the pseudo-random sequence initial value configuration indication information of the DMRS to the terminal by utilizing Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling.
10. The method according to claim 8 or 9, wherein the pseudo-random sequence initial value configuration indication information is transmitted when a plurality of paired terminals belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
11. The method of claim 10, wherein the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as that used by the second type terminal when ports configured by the first type terminal and the second type terminal belong to the same Code Division Multiplexing (CDM) group.
12. The method of claim 10, wherein when ports configured by a first type terminal and a second type terminal do not belong to the same Code Division Multiplexing (CDM) group, the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with a different pseudo-random sequence initial value than the second type terminal.
13. An information transmission method, comprising:
and transmitting configuration indication information of an index K in a calculation formula of a pseudo random sequence initial value of a demodulation reference signal DMRS to the terminal, wherein K represents a CDM group index.
14. The method of claim 13, wherein transmitting configuration indication information of an index K in a calculation formula of pseudo-random sequence initial values of DMRS to the terminal specifically includes:
and transmitting the configuration indication information of the index K to the terminal by utilizing Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling.
15. The method according to claim 13 or 14, wherein the configuration indication information of the index K is transmitted when a plurality of paired terminals belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
16. The method of claim 15, wherein when the ports configured by the first type terminal and the second type terminal belong to the same Code Division Multiplexing (CDM) group, an index K in a calculation formula of the pseudo random sequence initial value is configured as 0.
17. An information configuration method, comprising:
when multi-user multi-input multi-output MU MIMO pairing is carried out, if a plurality of paired terminals belong to different types, whether different pseudo-random sequence initial values are adopted by a first type terminal and a second type terminal is judged;
and if so, determining that DMRS ports from different Code Division Multiplexing (CDM) groups are configured for the first type terminal and the second type terminal.
18. An information receiving method, comprising:
and receiving pseudo-random sequence initial value configuration indication information of a demodulation reference signal DMRS sent by a network side.
19. The method according to claim 18, wherein receiving pseudo-random sequence initial value configuration indication information of a demodulation reference signal DMRS transmitted by a network side specifically includes:
and receiving the indication information of the configuration of the pseudo-random sequence initial value of the DMRS sent by the network side by utilizing the radio resource control RRC signaling or the downlink control information DCI signaling.
20. The method according to claim 18 or 19, wherein the pseudo-random sequence initial value configuration indication information is transmitted when a plurality of paired terminals belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
21. The method of claim 20, wherein the pseudo-random sequence initial value configuration indication information is sent when ports configured for paired first and second type terminals belong to the same Code Division Multiplexing (CDM) group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as the second type terminal.
22. The method of claim 20, wherein the pseudo-random sequence initial value configuration indication information is sent when ports configured for a first type terminal and a second type terminal that are paired do not belong to the same Code Division Multiplexing (CDM) group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal and the second type terminal with different pseudo-random sequence initial values.
23. A resource allocation apparatus, comprising:
the device comprises a first determination unit and a second determination unit, wherein the first determination unit is used for determining the initial value of the pseudo-random sequence of the DMRS for transmitting the demodulation reference signal DMRS, and the initial value of the pseudo-random sequence of the DMRS transmitted by different code division multiplexing CDM groups is different.
24. The apparatus of claim 23,
the first determination unit is configured to utilize different scrambling code indicators n for DMRSs transmitted by different CDM groupsSCIDThe number determines a pseudo-random sequence initial value of the DMRS.
25. The apparatus of claim 24, wherein n is a pseudo-random sequence initial value of DMRSs transmitted by different CDM groupsSCIDNumber 0 or 1 or 2.
26. The apparatus of claim 23, wherein an index K is added in a calculation formula of a pseudo random sequence initial value of DMRS, wherein K denotes a CDM group index.
27. The apparatus of claim 26, further comprising:
a second determining unit, configured to determine a pseudo-random sequence initial value of the DMRS according to the following method:
Figure FDA0001852855920000041
Figure FDA0001852855920000042
represents an orthogonal frequency division multiplexing, OFDM, symbol within one slot;
Figure FDA0001852855920000043
indicates the slot number within one subframe;
l represents an OFDM symbol;
Figure FDA0001852855920000044
a scrambling code number representing a radio resource control, RRC, configuration;
nSCIDand a scrambling code indicator for indicating the configuration of the downlink control information DCI.
28. The apparatus of claim 26 or 27, further comprising:
a third determining unit for determining K according to the following formula:
Figure FDA0001852855920000051
wherein: DMRS port denotes DMRS port number; or K is determined according to the following formula:
Figure FDA0001852855920000052
29. the apparatus of claim 26 or 27, wherein the corresponding relationship of DMRS port number to index K is: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 0,0,1,1,2,2, respectively; or the corresponding relation between the DMRS port and the index K is as follows: DMRS port numbers 0,1,2,3,4,5,6,7,8,9,10,11 correspond to index K values of 1,1,2,2,3,3, respectively.
30. An information transmission apparatus, comprising:
and a transmitting unit configured to transmit the pseudo random sequence initial value configuration indication information of the DMRS to the terminal.
31. The apparatus of claim 30,
the sending unit is specifically configured to send the pseudo random sequence initial value configuration indication information of the DMRS to the terminal by using a radio resource control RRC signaling or a downlink control information DCI signaling.
32. The apparatus according to claim 30 or 31, wherein the pseudo-random sequence initial value configuration indication information is transmitted when a plurality of paired terminals belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
33. The apparatus of claim 32, wherein the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as that used by the second type terminal when ports configured by the first type terminal and the second type terminal belong to the same Code Division Multiplexing (CDM) group.
34. The apparatus of claim 32, wherein the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with a different pseudo-random sequence initial value than the second type terminal when ports configured by the first type terminal and the second type terminal do not belong to the same Code Division Multiplexing (CDM) group.
35. An information transmission apparatus, comprising:
and a transmitting unit, configured to transmit configuration indication information of an index K in a calculation formula of a pseudo random sequence initial value of a demodulation reference signal DMRS to the terminal, where K represents a CDM group index.
36. The apparatus of claim 35,
the sending unit is configured to send the configuration indication information of the index K to the terminal by using a radio resource control RRC signaling or a downlink control information DCI signaling.
37. The apparatus of claim 35 or 36, wherein the configuration indication information of the index K is sent when multiple terminals paired belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
38. The apparatus of claim 37, wherein when the ports configured by the first type terminal and the second type terminal belong to the same Code Division Multiplexing (CDM) group, an index K in a calculation formula of the pseudo random sequence initial value is configured to be 0.
39. An information configuring apparatus, comprising:
the judging unit is used for judging whether the first type terminal and the second type terminal adopt different pseudo-random sequence initial values or not if the plurality of paired terminals belong to different types during MU MIMO pairing;
and a determining unit, configured to determine that DMRS ports from different code division multiplexing, CDM, groups are configured for the first type terminal and the second type terminal when the determination result of the determining unit is yes.
40. An information receiving apparatus, comprising:
and the receiving unit is used for receiving the pseudo-random sequence initial value configuration indication information of the demodulation reference signal DMRS sent by the network side.
41. The apparatus of claim 40,
the receiving unit is used for receiving the indication information of the pseudo random sequence initial value configuration of the DMRS sent by the network side by using the radio resource control RRC signaling or the downlink control information DCI signaling.
42. The apparatus of claim 41, wherein the pseudo-random sequence initial value configuration indication information is sent when multiple terminals paired belong to different types when performing multiuser multiple-input multiple-output (MU MIMO) pairing.
43. The apparatus of claim 42, wherein the pseudo-random sequence initial value configuration indication information is sent when ports configured for paired first and second type terminals belong to the same Code Division Multiplexing (CDM) group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with the same pseudo-random sequence initial value as the second type terminal.
44. The apparatus of claim 42, wherein the pseudo-random sequence initial value configuration indication information is sent when ports configured for paired first and second type terminals do not belong to the same Code Division Multiplexing (CDM) group, and the pseudo-random sequence initial value configuration indication information is used for configuring the first type terminal with different pseudo-random sequence initial values than the second type terminal.
45. A communications apparatus, comprising: a processor, a memory, and a transceiver; wherein the memory stores a computer program, and the processor is configured to read the program stored in the memory and execute the method according to any one of claims 1 to 22.
46. A computer storage medium having computer-executable instructions stored thereon for causing a computer to perform the method of any one of claims 1-22.
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