CN111614448B - Demodulation reference signal transmission method, terminal equipment and network side equipment - Google Patents

Demodulation reference signal transmission method, terminal equipment and network side equipment Download PDF

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CN111614448B
CN111614448B CN201910343928.2A CN201910343928A CN111614448B CN 111614448 B CN111614448 B CN 111614448B CN 201910343928 A CN201910343928 A CN 201910343928A CN 111614448 B CN111614448 B CN 111614448B
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identifier
target
pucch
dmrs
identification
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CN111614448A (en
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孙晓东
孙鹏
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Vivo Mobile Communication Co Ltd
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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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a demodulation reference signal transmission method, terminal equipment and network side equipment, wherein the method comprises the following steps: determining a target identifier according to a first identifier, wherein the first identifier comprises an identifier related to DMRS (demodulation reference signal) generation of a Physical Uplink Control Channel (PUCCH); generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers; and transmitting the target PUCCH DMRS to network side equipment. By the demodulation reference signal transmission method provided by the invention, multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be realized, further multiplexing transmission of the PUCCH can be realized, and the transmission capacity of the PUCCH format 4 is increased.

Description

Demodulation reference signal transmission method, terminal equipment and network side equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a demodulation reference signal transmission method, a terminal device, and a network side device.
Background
In a New Radio (NR), a Physical Uplink Control Channel (PUCCH) format 4 does not support multi-PUCCH multiplexing transmission in some scenarios. For example, when PUCCH format 4 is modulated by pi/2 Binary Phase Shift Keying (BPSK), if a PUCCH Demodulation Reference Signal (DMRS) uses a low Peak-to-Average Power Ratio sequence (e.g., zadoff-Chu sequence), the Peak-to-Average Power Ratio (PAPR) of PUCCH DMRS to PUCCH data is increased, resulting in reduced PUCCH DMRS Demodulation performance and an impact on uplink coverage, so that when PUCCH format 4 is modulated by pi/2 BPSK, single antenna port transmission is maximally supported, PUCCH multiplexing transmission is not supported, and transmission capacity is low.
As can be seen, in the prior art, the PUCCH format 4 does not support multi-PUCCH multiplexing transmission in some scenarios, and the transmission capacity is low.
Disclosure of Invention
The embodiment of the invention provides a demodulation reference signal transmission method, terminal equipment and network side equipment, and aims to solve the problems that in some scenes in the prior art, a PUCCH format 4 does not support PUCCH multiplexing transmission and the transmission capacity is low.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a demodulation reference signal transmission method, which is applied to a terminal device, and the method includes:
determining a target identifier according to a first identifier, wherein the first identifier comprises an identifier related to DMRS (demodulation reference signal) generation of a Physical Uplink Control Channel (PUCCH);
generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers;
and transmitting the target PUCCH DMRS to network side equipment.
In a second aspect, an embodiment of the present invention further provides a demodulation reference signal transmission method, which is applied to a network side device, and the method includes:
receiving a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) from a terminal device, wherein the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to PUCCH DMRS generation, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
and demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identifier.
In a third aspect, an embodiment of the present invention further provides a terminal device. The terminal device includes:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining a target identifier according to a first identifier, and the first identifier comprises an identifier related to DMRS (demodulation reference signal) generation of a Physical Uplink Control Channel (PUCCH);
the generating module is used for generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers;
and the transmission module is used for transmitting the target PUCCH DMRS to network side equipment.
In a fourth aspect, an embodiment of the present invention further provides a network side device. The network side device includes:
the terminal equipment comprises a receiving module and a transmitting module, wherein the receiving module is used for receiving a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) from the terminal equipment, the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to PUCCH DMRS generation, and different PUCCH DMRS transmitted on the same time-frequency resource are generated based on different target identifiers;
and the demodulation module is used for demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identifier.
In a fifth aspect, an embodiment of the present invention further provides a terminal device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the demodulation reference signal transmission method provided in the first aspect.
In a sixth aspect, an embodiment of the present invention further provides a network-side device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the demodulation reference signal transmission method provided in the second aspect.
In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the demodulation reference signal transmission method provided in the first aspect, or implements the steps of the demodulation reference signal transmission method provided in the second aspect.
In the embodiment of the invention, a target identifier is determined according to a first identifier, wherein the first identifier comprises an identifier related to DMRS (demodulation reference signal) of a Physical Uplink Control Channel (PUCCH); generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers; and transmitting the target PUCCH DMRS to network side equipment. Due to the fact that different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers, multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be achieved, multiplexing transmission of the PUCCH can be achieved, and the transmission capacity of the PUCCH format 4 is increased.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;
fig. 2 is a flowchart of a demodulation reference signal transmission method according to an embodiment of the present invention;
fig. 3 is a flowchart of a demodulation reference signal transmission method according to another embodiment of the present invention;
fig. 4 is a structural diagram of a terminal device provided in an embodiment of the present invention;
fig. 5 is a structural diagram of a network side device according to an embodiment of the present invention;
fig. 6 is a block diagram of a terminal device according to still another embodiment of the present invention;
fig. 7 is a block diagram of a network device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present application 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 embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B and/or C, means that 7 cases are included that include a alone, B alone, C alone, and both a and B, B and C, a and C, and a, B, and C.
Referring to fig. 1, fig. 1 is a structural diagram of a network system to which the embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal Device 11 and a network-side Device 12, where the terminal Device 11 may be a user-side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that a specific type of the terminal Device 11 is not limited in the embodiment of the present invention. The network side device 12 may be a base station, for example: macro station, LTE eNB, 5G NR NB, gNB, etc.; the network side device 12 may also be a small station, such as a Low Power Node (LPN) pico, femto, or the network side device 12 may be an Access Point (AP); the base station may also be a network node composed of a Central Unit (CU) together with a plurality of TRPs that it manages and controls. It should be noted that, in the embodiment of the present invention, the specific type of the network-side device 12 is not limited.
In this embodiment of the present invention, the network side device 12 may configure the terminal device 11 with a PUCCH DMRS generation related identifier (i.e., a first identifier), for example, configure the PUCCH DMRS generation related frequency hopping identifier and an orthogonal sequence identifier through high-level signaling.
After receiving the first identifier, the terminal device 11 may determine a new identifier (i.e., a target identifier) based on the first identifier, for example, taking the sum of the frequency hopping identifier and the orthogonal sequence identifier as the target identifier, or taking the sum of the cyclic shift identifiers corresponding to the frequency hopping identifier and the orthogonal sequence identifier as the target identifier. And further generates a target PUCCH DMRS based on the target identifier, and transmits the target PUCCH DMRS to the network side device 12.
Optionally, terminal device 11 may determine the target identifier according to the first identifier when the PUCCH DMRS is modulated by pi/2 BPSK or 8phase Shift keying (8 phase Shift key, 8 psk).
The network-side device 12 may also determine a target identifier based on the identifier related to the PUCCH DMRS configured for the terminal device 11, and generate the PUCCH DMRS based on the determined target identifier, so that the network-side device 12 may demodulate based on the PUCCH DMRS generated by the network-side device 12 and the target PUCCH DMRS received from the terminal device 11. The target identifier determined by the network side device 12 is the same as the target identifier determined by the terminal device 11.
Optionally, the determination manner of the target identifier may be predefined by a protocol, or the determination manner of the target identifier may be configured by the network side, so that it is ensured that the target identifier determined by the network side device 12 is the same as the target identifier determined by the terminal device 11.
In an embodiment, the network side device 12 may configure the first identifiers for at least two terminal devices 11, so that each terminal device 11 may determine the target identifier based on the corresponding first identifier, where the target identifiers determined by different terminal devices 11 are different, and the PUCCH DMRSs generated based on different target identifiers may be transmitted on the same time-frequency resource, thereby implementing multiplexing transmission of multiple PUCCHs.
In another embodiment, the network side device 12 may configure at least two first identifiers for one terminal device 11, so that the terminal device 11 may determine target identifiers based on different first identifiers, respectively, where the target identifiers determined by different first identifiers are different, and PUCCH DMRSs generated based on different target identifiers may be transmitted on the same time-frequency resource, thereby implementing multiplexing transmission of multiple PUCCHs.
The embodiment of the invention provides a demodulation reference signal transmission method which is applied to terminal equipment. Referring to fig. 2, fig. 2 is a flowchart of a demodulation reference signal transmission method according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:
step 201, determining a target identifier according to a first identifier, wherein the first identifier comprises an identifier related to DMRS (demodulation reference signal) of a Physical Uplink Control Channel (PUCCH).
In this embodiment, the first identifier may include an identifier related to PUCCH DMRS generation.
Optionally, the first identifier may include, but is not limited to, at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
In practical application, the network side device may configure the terminal device with a frequency hopping identifier and an orthogonal sequence identifier related to PUCCH DMRS generation through a high-level signaling. Optionally, under the condition that the network side device does not configure a frequency hopping identifier for the terminal device, the frequency hopping identifier may be a physical layer cell identifier; in the case that the network side device does not configure the orthogonal sequence identifier for the terminal device, the orthogonal sequence identifier may be a default value, for example, 0.
The determination mode of the target identifier can be predefined by a protocol, and can also be configured by the network side, so that the target identifier determined by the network side equipment is ensured to be the same as the target identifier determined by the terminal equipment.
For example, under the condition that the hopping identifiers used for different PUCCH transmissions are the same and the orthogonal sequence identifiers or cyclic shift identifiers used for different PUCCH transmissions are different, the terminal device may determine the target identifier according to the hopping identifier, for example, a sum of the hopping identifier and i is used as the target identifier, where a value of i corresponds to a sequence number of the PUCCH, for example, a value of i corresponding to a first PUCCH is 1, a value of i corresponding to a second PUCCH is 2, and so on; the terminal device may also determine the target identifier according to the orthogonal sequence identifier or the cyclic shift identifier, for example, using the orthogonal sequence identifier or the cyclic shift identifier as the target identifier; the terminal device may also determine a target identifier according to the frequency hopping identifier and the orthogonal sequence identifier, for example, a sum of the frequency hopping identifier and the orthogonal sequence identifier is used as the target identifier; the terminal device may also determine a target identifier according to the frequency hopping identifier and the cyclic shift identifier, for example, a sum of the frequency hopping identifier and the cyclic shift identifier is used as the target identifier.
And 202, generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers.
In this embodiment, the sequence number may be determined according to the target identifier, the PUCCH DMRS sequence may be selected based on the sequence number, and the selected PUCCH DMRS sequence may be modulated to obtain the target PUCCH DMRS.
Specifically, under the condition that the network side device configures at least two first identifiers for the terminal device, the terminal device may determine the target identifiers based on different first identifiers, respectively, where the target identifiers determined by different first identifiers are different, and may further generate the PUCCH DMRSs based on different target identifiers, respectively, so that different PUCCH DMRSs transmitted on the same time-frequency resource may be implemented.
And step 203, transmitting the target PUCCH DMRS to network side equipment.
In the embodiment of the invention, a target identifier is determined according to a first identifier, wherein the first identifier comprises an identifier related to DMRS (demodulation reference signal) generation of a Physical Uplink Control Channel (PUCCH); generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers; and transmitting the target PUCCH DMRS to network side equipment. Due to the fact that different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers, multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be achieved, interference among the PUCCH DMRSs is avoided, multiplexing transmission of the PUCCH can be achieved, and transmission capacity of the PUCCH format 4 is increased.
Optionally, in this embodiment, the above steps 201 to 203 may be performed under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, so that not only the capacity of the PUCCH format 4 when being modulated by pi/2 BPSK or 8PSK may be increased, but also system resources may be saved.
Optionally, the step 202, that is, the generating the PUCCH DMRS according to the target identifier, may include:
determining a sequence number according to the target identifier;
selecting a PUCCH DMRS sequence according to the sequence number;
and modulating the PUCCH DMRS sequence to obtain the target PUCCH DMRS.
For example, the PUCCH DMRS may be generated based on the following formula:
Figure BDA0002041647270000071
wherein the content of the first and second substances,
Figure BDA0002041647270000072
represents symbols after modulation of a PUCCH DMRS sequence,
Figure BDA0002041647270000073
represents a PUCCH DMRS sequence; m is a group of ZC Representing a PUCCH DMRS sequence length; α represents a cyclic shift; delta denotes the comb flag; u represents a sequence number; v denotes intra-sequence number.
Wherein u = (f) gh +f ss ) mod30, mod represents the remainder operator.
Optionally, the generating the PUCCH DMRS specifically may include the following three cases:
case one, when PUCCH does not employ sequence hopping and group hopping, f gh 、f ss And v may take the following values:
f gh ＝0
f ss ＝n ID mod30
v＝0
wherein n is ID Representing the target mark; f. of gh Representing a group hopping identity; f. of ss Indicating a sequence hopping identity.
Case two, when PUCCH employs group hopping, f gh 、f ss And v may take the following values:
Figure BDA0002041647270000081
f ss ＝n ID mod30
v＝0
wherein, the first and the second end of the pipe are connected with each other,
Figure BDA0002041647270000087
Figure BDA0002041647270000086
represents a lower rounded symbol;
Figure BDA0002041647270000082
indicating a frame number identification within the radio frame; n is hop Indicating the hopping identity within the time slot.
Case three, when the PUCCH employs sequence hopping, f gh 、f ss And v may take the following values:
f gh ＝0
f ss ＝n ID mod30
Figure BDA0002041647270000083
wherein the content of the first and second substances,
Figure BDA0002041647270000088
Figure BDA0002041647270000084
indicating a frame number identification within the radio frame; n is a radical of an alkyl radical hop Indicating the frequency hopping identity within the time slot.
In the actual situation,
Figure BDA0002041647270000085
typically divided into k sequences numbered 0 to k-1, for example k may be 30. After the sequence number u is obtained through calculation, a PUCCH DMRS sequence may be selected from the 30 sequences based on the sequence number u, so that the PUCCH DMRS sequence may be modulated to obtain a target PUCCH DMRS. For example, the pucchmrss sequence may be modulated by sampling pi/2 BPSK or 8PSK to obtain a target PUCCH DMRS.
Optionally, when the PUCCH is modulated by pi/2 BPSK or 8PSK, the value α may be 0, and the value δ may be 0.
Optionally, the target identifier may include one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Represents the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
In this embodiment, the target identifier may be a sum of a first product and a second product, where the first product is a product of the frequency hopping identifier and an m-th power of 2, and the second product is a product of the orthogonal sequence identifier and an n-th power of 2. The target flag may be a sum of the first product and a third product, where the third product is a product of the cyclic shift flag and an nth power of 2.
In the embodiment, the target identifier is determined based on the frequency hopping identifier and the orthogonal sequence identifier, or the target identifier is determined based on the frequency hopping identifier and the cyclic shift identifier, so that the cross-correlation between PUCCH DMRSs determined based on different target identifiers can be reduced, and the mutual interference between PUCCH DMRSs can be reduced.
Optionally, m may be 0 or 1, and n may be 0.
In this embodiment, the target identifier is a sum of a frequency hopping identifier and an orthogonal sequence identifier, or the target identifier is a sum of a frequency hopping identifier and a cyclic shift identifier, or the target identifier is a sum of twice the frequency hopping identifier and the orthogonal sequence identifier, or the target identifier is a sum of twice the frequency hopping identifier and the cyclic shift identifier, so that cross-correlation between different PUCCH DMRSs determined based on different target identifiers can be further reduced, and mutual interference between PUCCH DMRSs is reduced.
Optionally, when different PUCCH DMRSs are transmitted on the same time-frequency resource, the hopping identifiers used for transmission of the different PUCCH DMRSs are the same, and the orthogonal sequence identifiers or cyclic shift identifiers used for transmission of the different PUCCH DMRSs are different.
In the embodiment, for a terminal device, under the condition that different PUCCH DMRSs are transmitted on the same time-frequency resource, frequency hopping identifiers used for different PUCCH DMRS transmission are the same, orthogonal sequence identifiers used for different PUCCH DMRS transmission are different or cyclic shift identifiers used for different PUCCH DMRS transmission are different, so that different PUCCH DMRSs transmitted on the same time-frequency resource can be conveniently distinguished.
Optionally, under the condition that the PUCCH DMRS is modulated by pi/2 binary phase shift keying BPSK or 8PSK, the cyclic shift value corresponding to the orthogonal sequence identifier may be 0;
or alternatively
And under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the cyclic shift identifier can be 0.
In this embodiment, when the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the orthogonal sequence identifier may be 0, or the cyclic shift value corresponding to the cyclic shift identifier may be 0. For example, in a case where the target PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the value α may be 0. This can reduce the effect of cyclic shift on DMRS autocorrelation characteristics, cross-correlation characteristics, PAPR characteristics, and demodulation performance.
The embodiment of the invention provides a demodulation reference signal transmission method which is applied to network side equipment. Referring to fig. 3, fig. 3 is a flowchart of a demodulation reference signal transmission method according to an embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:
step 301, receiving a target PUCCH DMRS from a terminal device, wherein the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to the PUCCH DMRS, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers.
In this embodiment, the first identifier may include an identifier related to PUCCH DMRS generation.
Optionally, the first identifier may include, but is not limited to, at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
In addition, the relevant content of the target PUCCH DMRS in this embodiment may refer to the relevant description of the target PUCCH DMRS in the above embodiment, and is not repeated here to avoid repetition.
And step 302, demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identification.
In this embodiment, the network side device may also determine a target identifier based on the first identifier, and generate the PUCCH DMRS based on the target identifier, and then the network side device may demodulate based on the PUCCH DMRS generated by the network side device and the target PUCCH DMRS received from the terminal device, and a specific demodulation manner is not limited in this embodiment.
It should be noted that the determination method of the target identifier may be predefined by a protocol, and may also be configured by the network side, so that it may be ensured that the target identifier determined by the network side device is the same as the target identifier determined by the terminal device.
For example, under the conditions that the hopping identifiers used for different PUCCH transmissions are the same and the orthogonal sequence identifiers or cyclic shift identifiers used for different PUCCH transmissions are different, the network side device may determine the target identifier according to the hopping identifier, for example, a sum of the hopping identifier and i is used as the target identifier, where a value of i corresponds to a sequence number of the PUCCH, and if a value of i corresponding to the first PUCCH is 1, a value of i corresponding to the second PUCCH is 2, and so on; the network side device may also determine the target identifier according to the orthogonal sequence identifier or the cyclic shift identifier, for example, using the orthogonal sequence identifier or the cyclic shift identifier as the target identifier; the network side device may also determine a target identifier according to the frequency hopping identifier and the orthogonal sequence identifier, for example, a sum of the frequency hopping identifier and the orthogonal sequence identifier is used as the target identifier; the network side device may also determine a target identifier according to the frequency hopping identifier and the cyclic shift identifier, for example, taking the sum of the frequency hopping identifier and the cyclic shift identifier as the target identifier.
In the embodiment of the invention, a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) is received from terminal equipment, wherein the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to the PUCCH DMRS, different PUCCH DMRS transmitted on the same time-frequency resource are generated based on different target identifiers, and demodulation is carried out according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identifier, so that multiplexing transmission of different PUCCH DMRS on the same time-frequency resource can be realized, interference among the PUCCH DMRS is avoided, and further, the transmission capacity of PUCCH format 4 can be increased.
Optionally, in this embodiment, the above steps 301 to 302 may be performed under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, so that not only the capacity of the PUCCH format 4 in transmission modulated by pi/2 BPSK or 8PSK may be increased, but also system resources may be saved.
Optionally, for a terminal device, under the condition that different PUCCH DMRSs are transmitted on the same time-frequency resource, the frequency hopping identifiers used for transmission of different PUCCH DMRSs are the same, and the orthogonal sequence identifiers or cyclic shift identifiers used for transmission of different PUCCH DMRSs are different.
Optionally, the first identifier includes at least one of: the system comprises a frequency hopping identifier, an orthogonal sequence identifier and a cyclic shift identifier corresponding to the orthogonal sequence identifier.
Optionally, the target identifier includes one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Representing the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
In this embodiment, the target identifier may be a sum of a first product and a second product, where the first product is a product of the frequency hopping identifier and an m-th power of 2, and the second product is a product of the orthogonal sequence identifier and an n-th power of 2. The target flag may be a sum of the first product and a third product, where the third product is a product of the cyclic shift flag and an nth power of 2.
According to the embodiment, the target identifier is determined based on the frequency hopping identifier and the orthogonal sequence identifier, or the target identifier is determined based on the frequency hopping identifier and the cyclic shift identifier, so that the cross correlation between PUCCH DMRSs determined based on different target identifiers can be reduced, and the mutual interference between the PUCCH DMRSs can be reduced.
Optionally, m is 0 or 1, and n is 0.
In this embodiment, the target identifier is a sum of a frequency hopping identifier and an orthogonal sequence identifier, or the target identifier is a sum of a frequency hopping identifier and a cyclic shift identifier, or the target identifier is a sum of two times of a frequency hopping identifier and an orthogonal sequence identifier, or the target identifier is a sum of two times of a frequency hopping identifier and a cyclic shift identifier, so that cross-correlation between different PUCCH DMRSs determined based on different target identifiers can be further reduced, and mutual interference between PUCCH DMRSs can be reduced.
The following description of embodiments of the invention refers to the accompanying drawings in which:
example one:
when PUCCH format 4 adopts pi/2 BPSK transmission, UE1 receives frequency hopping identification configured by network side through high-level signaling
Figure BDA0002041647270000121
And orthogonal sequence identification
Figure BDA0002041647270000122
And generate
Figure BDA0002041647270000123
When PUCCH does not employ sequence hopping and group hopping transmission, f gh ＝0，f ss ＝n ID mod30, then:
u＝(f gh +f ss )mod 30＝(0+1mod30)mod30＝1
the PUCCH DMRS of UE1 is generated through pi/2 BPSK modulation based on the computer-generated sequence with sequence number 1 (i.e., the PUCCH DMRS sequence described above). The computer-generated sequence corresponding to each sequence number may be as shown in table 1.
TABLE 1 computer-generated sequence of length 12
Figure BDA0002041647270000124
Figure BDA0002041647270000131
Similarly, UE2 receives the frequency hopping identifier configured by the network side through the high-level signaling
Figure BDA0002041647270000132
And orthogonal sequence identification
Figure BDA0002041647270000133
And generate
Figure BDA0002041647270000134
The PUCCH DMRS for UE2 is generated through pi/2 BPSK modulation based on the computer-generated sequence with sequence number 2.
UE3 receives frequency hopping identification configured by network side through high-level signaling
Figure BDA0002041647270000135
And orthogonal sequence identification
Figure BDA0002041647270000136
And generating a third target identification
Figure BDA0002041647270000137
The PUCCH DMRS for UE3 is generated through pi/2 BPSK modulation based on the computer generated sequence with sequence number 3.
UE4 receives frequency hopping identification configured by network side through high-level signaling
Figure BDA0002041647270000138
And orthogonal sequence identification
Figure BDA0002041647270000139
And generate
Figure BDA00020416472700001310
The PUCCH DMRS for UE4 is generated through pi/2 BPSK modulation based on the computer generated sequence number 4.
Based on the PUCCH DMRS generation mode, the lower cross-correlation performance among the PUCCH DMRS of the UE1, the UE2, the UE3 and the UE4 can be ensured, the mutual interference among the PUCCH DMRS is avoided, and the multiplexing transmission of the PUCCH on the same time-frequency resource is realized.
Example two:
when PUCCH format 4 adopts pi/2 BPSK transmission, UE receives frequency hopping identification configured by network side through high-level signaling
Figure BDA00020416472700001311
And orthogonal sequence identification
Figure BDA00020416472700001312
Orthogonal sequence identification
Figure BDA00020416472700001313
Corresponding cyclic shift identification
Figure BDA00020416472700001314
Generating
Figure BDA00020416472700001315
When the PUCCH adopts group frequency hopping transmission and the PUCCH does not adopt intra-slot frequency hopping transmission for the 0 th slot, f gh The values of (a) are as follows:
Figure BDA00020416472700001316
wherein c (n) = (x) 1 (n+N C )+x 2 (n+N C ))mod2；
x 1 (n+31)＝(x 1 (n+3)+x 1 (n))mod2；
x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2；
x 1 (0)＝1，x 1 (n)＝0，n＝1，2，...，30；
Figure BDA0002041647270000141
N c ＝1600。
Correspondingly, the sequence number u takes the following values:
u＝(f gh +f ss )mod 30＝(17+4mod 30)mod 30＝21。
the PUCCH DMRS is generated through pi/2 BPSK modulation based on the computer-generated sequence with sequence number 21 (i.e., the PUCCH DMRS sequence described above).
According to the embodiment of the invention, a new scrambling code identifier is generated by multiplexing the existing high-level signaling scrambling code identifier, and the corresponding PUCCH DMRS sequence with lower cross correlation is selected based on the new scrambling code identifier, so that multiplexing transmission of different PUCCH DMRS on the same time-frequency resource can be realized, interference among the PUCCH DMRS is avoided, and further, the capacity of transmission in the PUCCH format 4 adopting pi/2 BPSK modulation can be increased.
Referring to fig. 4, fig. 4 is a structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 4, the terminal device 400 includes:
a determining module 401, configured to determine a target identifier according to a first identifier, where the first identifier includes an identifier related to DMRS generation of a physical uplink control channel, PUCCH;
a generating module 402, configured to generate a target PUCCH DMRS according to the target identifier, where different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
a transmission module 403, configured to transmit the target PUCCH DMRS to a network side device.
Optionally, the first identifier includes at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
Optionally, the target identifier includes one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Representing the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
Optionally, m is 0 or 1, and n is 0.
Optionally, when different PUCCH DMRSs are transmitted on the same time-frequency resource, the hopping identifiers used for transmission of the different PUCCH DMRSs are the same, and the orthogonal sequence identifiers or cyclic shift identifiers used for transmission of the different PUCCH DMRSs are different.
Optionally, under the condition that the PUCCH DMRS is modulated by pi/2 binary phase shift keying BPSK or 8PSK, the cyclic shift value corresponding to the orthogonal sequence identifier is 0;
or alternatively
And under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the cyclic shift identifier is 0.
Optionally, the generating module is specifically configured to:
determining a sequence number according to the target identifier;
selecting a PUCCH DMRS sequence according to the sequence number;
and modulating the PUCCH DMRS sequence to obtain the target PUCCH DMRS.
The terminal device 400 provided in the embodiment of the present invention can implement each process implemented by the terminal device in the foregoing method embodiments, and for avoiding repetition, details are not described here again.
The terminal device 400 of the embodiment of the present invention includes a determining module 401, configured to determine a target identifier according to a first identifier, where the first identifier includes an identifier related to DMRS generation of a physical uplink control channel PUCCH; a generating module 402, configured to generate a target PUCCH DMRS according to the target identifier, where different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers; a transmitting module 403, configured to transmit the target PUCCH DMRS to a network side device. Due to the fact that different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers, multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be achieved, interference among the PUCCH DMRSs is avoided, multiplexing transmission of the PUCCH can be achieved, and transmission capacity of the PUCCH format 4 is increased.
Referring to fig. 5, fig. 5 is a structural diagram of a network side device according to an embodiment of the present invention. As shown in fig. 5, the network side device 500 includes:
a receiving module 501, configured to receive a target physical uplink control channel, PUCCH, demodulation reference signal, DMRS, from a terminal device, where the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier includes an identifier related to PUCCH DMRS generation, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
a demodulation module 502, configured to demodulate according to the target PUCCH DMRS and a PUCCH DMRS generated by the network side device based on the target identifier.
Optionally, the first identifier includes at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
Optionally, the target identifier includes one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Representing the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
Optionally, m is 0 or 1, and n is 0.
The network side device 500 provided in the embodiment of the present invention can implement each process implemented by the network side device in the foregoing method embodiments, and is not described here again to avoid repetition.
The network side device 500 of the embodiment of the present invention includes a receiving module 501, configured to receive a DMRS for a target Physical Uplink Control Channel (PUCCH) from a terminal device, where the DMRS for the target PUCCH is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier includes an identifier related to the DMRS for the PUCCH, and different DMRSs for PUCCH transmitted on a same time-frequency resource are generated based on different target identifiers; a demodulation module 502, configured to demodulate according to the target PUCCH DMRS and a PUCCH DMRS generated by the network side device based on the target identifier. And multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be realized, interference among the PUCCH DMRSs is avoided, and the transmission capacity of the PUCCH format 4 can be further increased.
Fig. 6 is a structural diagram of another terminal device according to an embodiment of the present invention. Referring to fig. 6, the terminal device 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 6 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 610 is configured to determine a target identifier according to a first identifier, where the first identifier includes an identifier related to DMRS generation of a Physical Uplink Control Channel (PUCCH); generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
the radio frequency unit 601 is configured to transmit the target PUCCH DMRS to a network side device.
In the embodiment of the invention, different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers, so that multiplexing transmission of different PUCCH DMRSs on the same time-frequency resource can be realized, interference among the PUCCH DMRSs is avoided, and the transmission capacity of the PUCCH format 4 can be increased.
Optionally, the first identifier includes at least one of: the system comprises a frequency hopping identifier, an orthogonal sequence identifier and a cyclic shift identifier corresponding to the orthogonal sequence identifier.
Optionally, the target identifier includes one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Represents the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
Optionally, m is 0 or 1, and n is 0.
Optionally, when different PUCCH DMRSs are transmitted on the same time-frequency resource, the hopping identifiers used for transmission of the different PUCCH DMRSs are the same, and the orthogonal sequence identifiers or cyclic shift identifiers used for transmission of the different PUCCH DMRSs are different.
Optionally, when the PUCCH DMRS is modulated by pi/2 binary phase shift keying BPSK or 8PSK, the cyclic shift value corresponding to the orthogonal sequence identifier is 0;
or
And under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the cyclic shift identifier is 0.
Optionally, the processor 610 is further configured to:
determining a sequence number according to the target identifier;
selecting a PUCCH DMRS sequence according to the sequence number;
and modulating the PUCCH DMRS sequence to obtain the target PUCCH DMRS.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. Generally, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.
The terminal device provides the user with wireless broadband internet access through the network module 602, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 can also provide audio output related to a specific function performed by the terminal apparatus 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.
The terminal device 600 further comprises at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the luminance of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the terminal apparatus 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation thereon or nearby, the touch operation can be transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 can provide a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 6, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the terminal device, and this is not limited here.
The interface unit 608 is an interface for connecting an external device to the terminal apparatus 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 600 or may be used to transmit data between the terminal apparatus 600 and an external device.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 610 is a control center of the terminal device, connects various parts of the entire terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 609 and calling data stored in the memory 609, thereby performing overall monitoring of the terminal device. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The terminal device 600 may further include a power supply 611 (e.g., a battery) for supplying power to various components, and preferably, the power supply 611 may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.
In addition, the terminal device 600 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides a terminal device, including a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program is executed by the processor 610 to implement each process of the foregoing embodiment of the method for transmitting a demodulation reference signal, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
Referring to fig. 7, fig. 7 is a block diagram of a network side device according to another embodiment of the present invention. As shown in fig. 7, the network side device 700 includes: a processor 701, a memory 702, a bus interface 703 and a transceiver 704, wherein the processor 701, the memory 702 and the transceiver 704 are all connected to the bus interface 703.
In this embodiment of the present invention, the network side device 700 further includes: a computer program stored on the memory 702 and executable on the processor 701.
In this embodiment of the present invention, the transceiver 704 is configured to:
receiving a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) from a terminal device, wherein the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to PUCCH DMRS generation, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
and demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identifier.
Optionally, the first identifier includes at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
Optionally, the target identifier includes one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein N is ID1 Represents the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
Optionally, m is 0 or 1, and n is 0.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the foregoing embodiment of the demodulation reference signal transmission method, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (25)

1. A demodulation reference signal transmission method is applied to terminal equipment and is characterized by comprising the following steps:
determining a target identifier according to a first identifier, wherein the first identifier comprises an identifier related to DMRS generation of a Physical Uplink Control Channel (PUCCH);
generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
and transmitting the target PUCCH DMRS to network side equipment.
2. The method of claim 1, wherein the first identifier comprises at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
3. The method of claim 2, wherein the target identification comprises one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein N is ID1 Represents the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
4. The method of claim 3, wherein m is 0 or 1 and n is 0.
5. The method of claim 2, wherein frequency hopping identities for different PUCCH DMRS transmissions are the same and orthogonal sequence identities or cyclic shift identities for different PUCCH DMRS transmissions are different when the different PUCCH DMRS transmissions are transmitted on the same time frequency resource.
6. The method according to claim 2, wherein the cyclic shift value corresponding to the orthogonal sequence identifier is 0 in case that the PUCCH DMRS is modulated by pi/2 Binary Phase Shift Keying (BPSK) or 8 PSK;
or alternatively
And under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the cyclic shift identifier is 0.
7. The method of claim 1, wherein the generating the PUCCH DMRS according to the target identity comprises:
determining a sequence number according to the target identifier;
selecting a PUCCH DMRS sequence according to the sequence number;
and modulating the PUCCH DMRS sequence to obtain the target PUCCH DMRS.
8. A demodulation reference signal transmission method is applied to network side equipment, and is characterized by comprising the following steps:
receiving a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) from a terminal device, wherein the target PUCCH DMRS is generated based on a target identifier, the target identifier is determined based on a first identifier, the first identifier comprises an identifier related to PUCCH DMRS generation, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifiers;
and demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identifier.
9. The method of claim 8, wherein the first identifier comprises at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
10. The method of claim 9, wherein the target identification comprises one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein, N ID1 Represents the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
11. The method of claim 10, wherein m is 0 or 1 and n is 0.
12. A terminal device, comprising:
the device comprises a determining module and a judging module, wherein the determining module is used for determining a target identifier according to a first identifier, and the first identifier comprises an identifier related to DMRS (demodulation reference signal) of a Physical Uplink Control Channel (PUCCH);
the generating module is used for generating a target PUCCH DMRS according to the target identifier, wherein different PUCCH DMRSs transmitted on the same time-frequency resource are generated on the basis of different target identifiers;
and the transmission module is used for transmitting the target PUCCH DMRS to network side equipment.
13. The terminal device of claim 12, wherein the first identifier comprises at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
14. The terminal device of claim 13, wherein the target identifier comprises one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein N is ID1 Representing the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
15. The terminal device of claim 14, wherein m is 0 or 1 and n is 0.
16. The terminal device of claim 13, wherein in case of transmitting different PUCCHs on the same time-frequency resource, the hopping identities used for different PUCCH transmissions are the same, and the orthogonal sequence identities or cyclic shift identities used for different PUCCH transmissions are different.
17. The terminal device of claim 13, wherein, in case that the PUCCH DMRS is modulated by pi/2 binary phase shift keying BPSK or 8PSK, the cyclic shift corresponding to the orthogonal sequence identifier takes a value of 0;
or
And under the condition that the PUCCH DMRS is modulated by pi/2 BPSK or 8PSK, the cyclic shift value corresponding to the cyclic shift identifier is 0.
18. The terminal device of claim 12, wherein the generating module is specifically configured to:
determining a sequence number according to the target identifier;
selecting a PUCCH DMRS sequence according to the sequence number;
and modulating the PUCCH DMRS sequence to obtain the target PUCCH DMRS.
19. A network-side device, comprising:
the terminal equipment comprises a receiving module, a demodulation reference signal generating module and a demodulation reference signal generating module, wherein the receiving module is used for receiving a target Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) from terminal equipment, the target PUCCH DMRS is generated based on a target identification, the target identification is determined based on a first identification, the first identification comprises an identification related to PUCCH DMRS generation, and different PUCCH DMRSs transmitted on the same time-frequency resource are generated based on different target identifications;
and the demodulation module is used for demodulating according to the target PUCCH DMRS and the PUCCH DMRS generated by the network side equipment based on the target identification.
20. The network-side device of claim 19, wherein the first identifier comprises at least one of: the system comprises a frequency hopping identification, an orthogonal sequence identification and a cyclic shift identification corresponding to the orthogonal sequence identification.
21. The network-side device of claim 20, wherein the target identifier comprises one of:
N ID1 *2 m +N ID2 *2 n ；
N ID1 *2 m +N ID3 *2 n ；
wherein N is ID1 Representing the frequency hopping identity, N ID2 Represents the orthogonal sequence identity, N ID3 And m and n are natural numbers.
22. The network-side device of claim 21, wherein m is 0 or 1, and n is 0.
23. A terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the demodulation reference signal transmission method according to any one of claims 1 to 7.
24. A network-side device, comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the demodulation reference signal transmission method according to any one of claims 8 to 11.
25. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the steps of the demodulation reference signal transmission method according to any one of claims 1 to 7, or implements the steps of the demodulation reference signal transmission method according to any one of claims 8 to 11.
CN201910343928.2A 2019-04-26 2019-04-26 Demodulation reference signal transmission method, terminal equipment and network side equipment Active CN111614448B (en)

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