CN109495229B

CN109495229B - Method and apparatus for generating and receiving pilot signal

Info

Publication number: CN109495229B
Application number: CN201711149096.8A
Authority: CN
Inventors: 王磊; 陈雁; 徐修强; 张蕾; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-09-11
Filing date: 2017-11-17
Publication date: 2022-03-08
Anticipated expiration: 2037-11-17
Also published as: CN109495229A

Abstract

The application provides a method for generating a pilot signal, which comprises the following steps: the terminal equipment acquires the correlation identification and the port number; the terminal equipment determines a pilot frequency sequence according to the correlation identifier; the terminal equipment generates a pilot signal according to the pilot sequence and the port number. The correlation identifier is used to indicate a manner of determining a pilot sequence by the terminal device, where the manner of determining the pilot sequence is, for example, a manner of determining a pilot sequence related to a time slot, and the manner of determining the pilot sequence may also be a manner of determining a pilot sequence unrelated to a time slot, so as to meet the requirements of different application scenarios on the correlation of pilot signals. The method of the pilot signal provided by the application can be applied to authorization-based transmission (including the existing authorization-based transmission and the authorization-based transmission in a 5G mobile communication system) and also can be applied to authorization-free transmission in the 5G mobile communication system, so that the scheme provided by the application also has better backward compatibility.

Description

Method and apparatus for generating and receiving pilot signal

The present application claims priority from the application filed on 11/09/2017 by the chinese patent office under the application number 201710814504.0 entitled "method and apparatus for generating and receiving pilot signals", which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to the field of communications, and in particular, to a method and apparatus for generating and receiving a pilot signal in the field of wireless communications.

Background

The grant free transmission is the fifth generation (the 5)^thgeneration, 5G) in a mobile communication system, in the authorization-free transmission, a terminal device can directly send data without waiting for resource scheduling information of a network device, thereby reducing the time delay of uplink transmission.

In the unlicensed transmission, in order to improve reliability, the terminal device may repeat transmission of the same transmission block multiple times, and the network device determines, according to the pilot signal, that the received data is data transmitted for the second time, so as to perform combining and decoding. In addition, the network device also determines which terminal device sent the received data according to the pilot signal.

Therefore, in the unlicensed transmission, the amount of pilot signals required by the communication system is much larger than that in the licensed based transmission, so that the pilot signals generated by the method for generating pilot signals in the licensed based transmission cannot meet the requirement of correlation of the unlicensed transmission on the pilot signals.

Disclosure of Invention

The application provides a method and a device for generating and receiving pilot signals, which can meet the requirements of authorization-free transmission and authorization-based transmission on the pilot signals.

In a first aspect, a method for generating a pilot signal is provided, including: the terminal equipment acquires the correlation identification and the port number; the terminal equipment determines a pilot frequency sequence according to the correlation identifier; the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

The correlation identifier is used to instruct the terminal device to determine the pilot sequence, where the pilot sequence is determined, for example, by a method related to a time slot, or by a method unrelated to a time slot, so as to meet the requirement of different application scenarios on the correlation of pilot signals. The method for pilot frequency signals provided by the application can be applied to authorization-based transmission (including the existing authorization-based transmission and the authorization-based transmission in a 5G mobile communication system) and also can be applied to authorization-free transmission in the 5G mobile communication system, so that the scheme provided by the embodiment of the application also has better backward compatibility.

Optionally, the determining, by the terminal device, the pilot sequence according to the correlation identifier includes: when the value of the correlation identifier is equal to a preset value, the terminal equipment determines a pilot frequency sequence according to at least one parameter of the identifier of the cell to which the terminal equipment belongs, the identifier of the terminal equipment and a scrambling identifier and the time slot number; or, when the value of the correlation identifier is not equal to the preset value, the terminal device determines the pilot sequence according to the correlation identifier and at least one parameter of the identifier of the cell to which the terminal device belongs, the identifier of the terminal device and the scrambling identifier.

Due to the limited number of orthogonal pilot sequences, the number of terminal devices communicating simultaneously with the network device is limited. To increase the number of terminal devices that can communicate simultaneously with the network device, different terminal devices may employ non-orthogonal pilot sequences. In order to reduce interference between terminal devices caused by non-orthogonal pilot sequences, it is necessary to reduce correlation between non-orthogonal pilot sequences as much as possible. In the prior art, the slot number is one of the parameters for generating the pilot sequence, and the generated pilot sequence is hopped with the slot number. If the generation mode in the prior art is used, it cannot be guaranteed that the plurality of terminal devices use the non-orthogonal pilot sequences to have low correlation, so that the time slot numbers are avoided being used as parameters for generating the pilot sequences when the pilot sequences are generated, and the pilot sequences used by the plurality of terminal devices can be guaranteed to have low correlation.

Optionally, the determining, by the terminal device, the pilot sequence according to the correlation identifier includes: when the value of the correlation identifier is equal to a preset value, the terminal equipment determines a pilot frequency sequence according to at least one parameter of the identifier of the cell to which the terminal equipment belongs, the identifier of the terminal equipment and a scrambling identifier and the time slot number; or, when the value of the correlation identifier is not equal to the preset value, the terminal device determines the pilot sequence according to at least one parameter of the identifier of the cell to which the terminal device belongs, the identifier of the terminal device and the scrambling identifier.

Optionally, before the terminal device determines the pilot sequence according to the correlation identifier, the method further includes: the terminal device receives a Radio Resource Control (RRC) message including configuration information of the scrambling identity.

Compared with the prior art, the embodiment of the present invention reduces signaling overhead by using a method in which an RRC message and Downlink Control Information (DCI) jointly indicate a scrambling identifier used by a terminal device.

Optionally, the RRC message includes a plurality of scrambling identities, the method further includes: the terminal equipment receives DCI, wherein the DCI comprises an index of a scrambling identifier, and the index of the scrambling identifier is used for indicating a scrambling identifier used for determining a pilot frequency sequence in a plurality of scrambling identifiers.

In this embodiment, the terminal device determines the pilot sequence according to the scrambling identifier specified by the network device and generates the pilot signal, and the correlation between the generated pilot sequence and the pilot sequences generated by other terminal devices can be further reduced.

Optionally, the terminal device may further use the cyclic shift value as a parameter for determining the pilot sequence when determining the pilot sequence.

Multiple pilot sequences can be generated by performing cyclic shift processing on one pilot sequence, so that the requirement of the unlicensed transmission on pilot signals can be met.

Optionally, before the terminal device determines the pilot sequence according to the value of the cyclic shift and the correlation identifier, the method further includes: a terminal device receives an RRC message or DCI or a Media Access Control (MAC) Control Element (CE) including an index of a cyclic shift value.

Optionally, the obtaining, by the terminal device, the correlation identifier and the port number includes: the terminal equipment acquires the correlation identification and the port number according to the received RRC message; or the terminal equipment acquires the correlation identifier according to the received RRC message, and the terminal equipment acquires the port number according to the received DCI; or the terminal equipment acquires the correlation identifier and the port number according to the received DCI.

In a second aspect, a method for receiving a pilot signal is provided, including: the network equipment sends a correlation identification and a port number to the terminal equipment, wherein the correlation identification and the port number are used for generating a pilot signal; the network device receives a pilot signal from the terminal device.

Optionally, preset values are preset in the network device and the terminal device,

when the value of the correlation identifier is equal to a preset value, the correlation identifier is used for indicating the terminal equipment to form a pilot signal according to a first mode; or, when the value of the correlation identifier is not equal to the preset value, the correlation identifier is used for instructing the terminal device to generate the pilot signal according to the second mode.

The first mode is, for example, a pilot signal generation mode based on a slot number, in which the slot number is one of parameters for generating a pilot signal. The second mode is, for example, a pilot signal generation method independent of a slot number, in which the slot number is not a parameter for generating a pilot signal. When the terminal device transmits data based on the authorization mode, the communication system has less demand for the pilot signal, and the network device can instruct the terminal device to generate the pilot signal according to the method for generating the pilot signal in the first mode; when the terminal device transmits data in the authorization-free transmission mode, the communication system has more demand for the pilot signal, and the network device can instruct the terminal device to generate the pilot signal according to the method for generating the pilot signal in the second mode, so that the method for generating the pilot signal by the terminal device can be determined according to the current transmission mode of the terminal device.

Optionally, the sending, by the network device, the correlation identifier and the port number to the terminal device includes: the network equipment sends an RRC message to the terminal equipment, wherein the RRC message comprises the correlation identification and the port number; or the network device sends an RRC message to the terminal device, wherein the RRC message comprises the information of the correlation identifier, and the network device sends DCI to the terminal device, wherein the DCI comprises the port number.

The embodiment provides a plurality of methods for sending the correlation identifier and the port number, and can improve the flexibility and the reliability of the terminal equipment for obtaining the correlation identifier and the port number.

In a third aspect, an apparatus for generating a pilot signal is provided, where the apparatus may implement the functions performed by the terminal device in the method according to the first aspect, where the functions may be implemented by hardware, or may be implemented by hardware and corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform corresponding functions in the method according to the first aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In a fourth aspect, an apparatus for receiving a pilot signal is provided, where the apparatus can implement the functions performed by the network device in the method according to the second aspect, and the functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform the corresponding functions in the method according to the second aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In a fifth aspect, a network system is provided, which includes the apparatus for generating a pilot signal according to the third aspect and the apparatus for receiving the pilot signal according to the fourth aspect.

A sixth aspect provides a computer readable storage medium having stored therein computer program code which, when executed by a processing unit or processor, causes a terminal device to perform the method of the first aspect.

In a seventh aspect, a computer-readable storage medium is provided, in which computer program code is stored, which, when executed by a processing unit or processor, causes a network device to perform the method of the second aspect.

In an eighth aspect, a communication chip is provided, in which instructions are stored, which, when run on a terminal device, cause the communication chip to perform the method of the first aspect described above.

In a ninth aspect, there is provided a communication chip having instructions stored therein which, when run on a network device, cause the communication chip to perform the method of the second aspect described above.

In a tenth aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of the terminal device, causes the terminal device to perform the method of the first aspect described above.

In an eleventh aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of the network device, causes the network device to perform the method of the second aspect described above.

In a twelfth aspect, a method of generating a pilot signal is provided, including: the method comprises the steps that the terminal equipment receives RRC message or DCI or MAC CE, the DCI or MAC CE comprises a port number, and the RRC message further comprises at least one of a scrambling identifier, an identifier of a cell to which the terminal equipment belongs and an identifier of the terminal equipment; the terminal equipment determines a pilot frequency sequence according to at least one identifier of the scrambling identifier, the identifier of the cell to which the terminal equipment belongs and the identifier of the terminal equipment; the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

The method for generating the pilot signal does not need to generate the pilot signal according to the time slot number, and the pilot signal does not hop along with time, so that the correlation among the pilot signals generated by different terminal equipment is reduced. When the method is applied to a scene that pilot signals sent by a plurality of terminal devices are not completely orthogonal, the interference among the plurality of terminal devices can be reduced.

Optionally, the RRC message includes configuration information of the value of the cyclic shift.

In a thirteenth aspect, a method of receiving a pilot signal is provided, including: the method comprises the steps that network equipment sends RRC message or DCI or MAC CE, the RRC message or DCI or MAC CE comprises a port number, the RRC message further comprises at least one of a scrambling identifier, an identifier of a cell to which the terminal equipment belongs and an identifier of the terminal equipment, and the port number and at least one of the scrambling identifier, the identifier of the cell to which the terminal equipment belongs and the identifier of the terminal equipment are used for generating a pilot signal; the network device receives the pilot signal.

Optionally, the RRC message further includes configuration information of a cyclic shift value used to generate the pilot signal.

A fourteenth aspect provides an apparatus for generating a pilot signal, which may implement the functions performed by the terminal device in the method according to the twelfth aspect, where the functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform the corresponding functions in the method according to the twelfth aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In a fifteenth aspect, an apparatus for receiving a pilot signal is provided, where the apparatus can implement the functions performed by the network device in the method according to the thirteenth aspect, and the functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform corresponding functions in the method according to the thirteenth aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In a sixteenth aspect, a network system is provided, which includes the apparatus for generating a pilot signal in the fourteenth aspect and the apparatus for receiving the pilot signal in the fifteenth aspect.

A seventeenth aspect provides a computer-readable storage medium having stored therein computer program code, which, when executed by a processing unit or processor, causes a terminal device to perform the method of the twelfth aspect.

In an eighteenth aspect, a computer-readable storage medium is provided, having stored therein computer program code, which, when executed by a processing unit or processor, causes a network device to perform the method of the thirteenth aspect.

Nineteenth aspect, a communication chip is provided, having instructions stored therein, which, when run on a terminal device, cause the communication chip to perform the method of the twelfth aspect described above.

A twentieth aspect provides a communication chip having instructions stored therein, which when run on a network device, cause the communication chip to perform the method of the thirteenth aspect.

In a twenty-first aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of the terminal device, causes the terminal device to perform the method of the twelfth aspect described above.

In a twenty-second aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of a network device, causes the network device to perform the method of the thirteenth aspect described above.

In a twenty-third aspect, a method of generating a pilot signal is provided, comprising: the terminal equipment receives RRC message or DCI or MAC CE, wherein the RRC message or the DCI or the MAC CE comprises a port number and a plurality of scrambling identifications; the terminal equipment determines a pilot frequency sequence according to the time slot number and the scrambling identifier corresponding to the time slot number in the plurality of scrambling identifiers; the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

In the scheme provided in this embodiment, the scrambling identifier is associated with a timeslot number, the scrambling identifiers associated with different timeslot numbers may be different or the same (whether the scrambling identifiers are the same is specifically specified by a standard or determined by a network device), and when determining the pilot sequence of a specific timeslot, only the scrambling identifier associated with (corresponding to) the timeslot number of the timeslot can be used. The scrambling mark has the function of offsetting the negative influence of the change of the time slot number on the correlation of the pilot signal, so that even if the time slot number changes, the correlation of the pilot signal generated according to the time slot number and the correlation mark corresponding to the time slot number still meets the transmission requirement. Optionally, the terminal device may further use the cyclic shift value as a parameter for determining the pilot sequence when determining the pilot sequence.

In a twenty-fourth aspect, a method of receiving a pilot signal is provided, comprising: the method comprises the steps that network equipment sends RRC message or DCI or MAC CE, the RRC message or the DCI or the MAC CE comprises a port number and a plurality of scrambling identifications, the scrambling identifications correspond to a plurality of time slot numbers in a one-to-one mode, and the port number, the scrambling identifications and the time slot numbers are used for generating pilot signals; the network device receives the pilot signal.

In the scheme provided in this embodiment, the scrambling identifier is associated with a timeslot number, the scrambling identifiers associated with different timeslot numbers may be different or the same (whether the scrambling identifiers are the same or not is determined by the network device), and when determining the pilot sequence of a specific timeslot, only the scrambling identifier associated with (corresponding to) the timeslot number of the timeslot can be used. The scrambling mark has the function of offsetting the negative influence of the change of the time slot number on the correlation of the pilot signal, so that even if the time slot number changes, the correlation of the pilot signal generated according to the time slot number and the correlation mark corresponding to the time slot number still meets the transmission requirement.

A twenty-fifth aspect provides an apparatus for generating a pilot signal, which may implement the functions performed by the terminal device in the method according to the twenty-third aspect, where the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform the corresponding functions in the method according to the twenty-third aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

A twenty-sixth aspect provides an apparatus for receiving a pilot signal, where the apparatus can implement the functions performed by the network device in the method related to the twenty-fourth aspect, and the functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver, and the processor is configured to support the apparatus to perform the corresponding functions in the method according to the twenty-fourth aspect. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In a twenty-seventh aspect, there is provided a network system comprising the apparatus for generating a pilot signal according to the twenty-third aspect and the apparatus for receiving the pilot signal according to the twenty-fourth aspect.

A twenty-eighth aspect provides a computer-readable storage medium having stored therein computer program code which, when executed by a processing unit or processor, causes a terminal device to perform the method of the twenty-third aspect.

A twenty-ninth aspect provides a computer-readable storage medium having stored therein computer program code, which, when executed by a processing unit or processor, causes a network device to perform the method of the twenty-fourth aspect.

A thirty-first aspect provides a communication chip having instructions stored therein, which when run on a terminal device, cause the communication chip to perform the method of the twenty-first aspect.

In a thirty-first aspect, a communication chip is provided, in which instructions are stored, which, when run on a network device, cause the communication chip to perform the method of the twenty-fourth aspect described above.

In a thirty-second aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of a terminal device, causes the terminal device to perform the method of the twenty-third aspect described above.

In a thirty-third aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit or transceiver and a processing unit or processor of a network device, causes the network device to perform the method of the twenty-fourth aspect described above.

Drawings

FIG. 1 is a schematic diagram of a communication system suitable for use with the present application;

fig. 2 is a schematic diagram of a method for generating a pilot signal according to the present application.

Fig. 3 is a schematic diagram of a method for receiving a pilot signal according to the present application;

FIG. 4 is a schematic diagram of another method for generating pilot signals provided herein;

fig. 5 is a schematic diagram of another method for receiving pilot signals provided herein;

fig. 6 is a schematic diagram of another method for generating a pilot signal provided herein;

fig. 7 is a schematic diagram of still another method for receiving pilot signals provided by the present application;

FIG. 8 is a schematic diagram of a possible terminal device provided in the present application;

FIG. 9 is a schematic diagram of another possible terminal device provided herein;

FIG. 10 is a schematic diagram of one possible network device provided herein;

FIG. 11 is a schematic diagram of another possible network device provided herein;

FIG. 12 is a schematic diagram of yet another possible terminal device provided by the present application;

FIG. 13 is a schematic diagram of yet another possible terminal device provided by the present application;

FIG. 14 is a schematic diagram of yet another possible network device provided herein;

FIG. 15 is a schematic diagram of yet another possible network device provided herein;

FIG. 16 is a schematic diagram of yet another possible terminal device provided herein;

FIG. 17 is a schematic diagram of yet another possible terminal device provided by the present application;

FIG. 18 is a schematic diagram of yet another possible network device provided herein;

fig. 19 is a schematic diagram of yet another possible network device provided by the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

Fig. 1 shows a communication system to which the present application is applicable. The communication system comprises a network device and a terminal device, wherein the network device and the terminal device communicate through a wireless network, when the terminal device sends information, a wireless communication module of the terminal device can acquire information bits to be sent to the network device through a channel, and the information bits are generated by a processing module of the terminal device, received from other devices or stored in a storage module of the terminal device.

In this application, a terminal device may be referred to as an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. An access terminal may be a cellular telephone, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a user device in a 5G mobile communication system.

The network device may be a Base Transceiver Station (BTS) in a Code Division Multiple Access (CDMA) system, a base station (node B, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved node B (eNB) in a Long Term Evolution (LTE) system, or a base station (gNB) in a 5G communication system, where the base station is merely an example, and the network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.

The above-described communication system to which the present application is applied is merely an example, and the communication system to which the present application is applied is not limited thereto, and for example, the number of network devices and terminal devices included in the communication system may also be other numbers.

Fig. 2 is a schematic diagram of a method for generating a pilot signal according to the present application. The method 200 comprises:

s201, the terminal device obtains the correlation identification and the port number.

S202, the terminal equipment determines a pilot frequency sequence according to the correlation identification.

S203, the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

As can be seen from the above, the correlation indicator is information for indicating the way in which the terminal device determines the pilot sequence, and therefore, any information indicating the way in which the terminal device determines the pilot sequence may be referred to as the correlation indicator, and the information indicating the way in which the terminal device determines the pilot sequence may also have other names.

The correlation flag may be used as a parameter for calculating an initial value of the pilot sequence, in addition to instructing the terminal device to determine the pilot sequence, and the purpose of the correlation flag is to reduce the correlation between multiple non-orthogonal pilot sequences.

The network device generates the correlation identifier in an online manner, i.e., a real-time calculation manner, or an offline manner, i.e., a pre-calculation and storage manner.

For example, for a specific bandwidth configuration, the network device has already scheduled one or more non-orthogonal pilot sequences, when the network device needs to schedule a new non-orthogonal pilot sequence, different values are tried in the value set of the correlation identifier, a new sequence is calculated according to the values, the correlation between the new sequence and the original sequence (the one or more scheduled non-orthogonal pilot sequences) is calculated, a sequence with the lowest correlation is selected as a new pilot sequence, and the correlation identifier corresponding to the new pilot sequence is sent to the terminal device. The sending of the correlation identifier corresponding to the new pilot sequence to the terminal device is, for example, sending a value or a sequence number of the correlation identifier to the terminal device.

After determining the determination mode of the pilot sequence according to the correlation identifier, the terminal device first calculates an initial value (c _ init) of the pilot sequence, then calculates the pilot sequence according to the initial value, and finally generates a corresponding pilot signal according to the port number and the pilot sequence. The method for calculating the initial value of the pilot sequence by the terminal device will be described in the following embodiments, and the method for calculating the pilot sequence by the terminal device according to the initial value of the pilot sequence and the method for generating the pilot signal according to the port number and the pilot sequence may refer to corresponding methods in the prior art, and for brevity, no further description is given here.

In a possible implementation manner, the terminal device pre-stores a preset value, and determines the pilot sequence according to the correlation identifier by the terminal device, including:

s204, when the value of the correlation identifier is equal to the preset value, the terminal equipment determines a pilot frequency sequence according to at least one parameter of the identifier of the cell to which the terminal equipment belongs, the identifier of the terminal equipment and the scrambling identifier and the time slot number. Alternatively, the first and second electrodes may be,

s205, when the value of the correlation identifier is not equal to the preset value, the terminal device determines the pilot sequence according to the correlation identifier and at least one parameter of the identifier of the cell to which the terminal device belongs, the identifier of the terminal device and the scrambling identifier.

In a possible implementation manner, when the correlation identifier is not equal to the preset value, the terminal device may also determine the pilot sequence without using the correlation identifier, that is, S205 may be replaced with S206.

S206, when the value of the correlation mark is not equal to the preset value, the terminal device determines the pilot frequency sequence according to at least one parameter of the mark of the cell to which the terminal device belongs, the mark of the terminal device and the scrambling mark.

The preset value may be a value specified by a communication protocol, or may be a value configured by the network device to the terminal device, and hereinafter, the preset value is denoted by X.

When the value of the correlation flag is equal to X (let X be 1), the terminal device may calculate the initial value of the pilot sequence according to one of formulas (1) to (3).

c _ init ═ floor (timeslot number/2) +1 ═ 2 × cell id +1 × (2 × cell id + 2) ×^p+ scramble identification index (1)

c _ init ═ (floor (slot number/2) +1) × (2 × scrambling mark +1) × 2^p+ scramble identification index (2)

c _ init ═ (floor (slot number/2) +1) × (2 × terminal id +1) × 2^p+ scramble identification index (3)

In the above formula, floor represents a rounding-down operation, 2^pRepresents the power p of 2, p is an integer and 1. ltoreq. p.ltoreq.31. For example, p can take on values of 5, 16, etc.

The timeslot number is a serial number of a current transmission timeslot in a whole radio frame, a cell identifier is an identifier of a cell to which the terminal device belongs, and a terminal identifier is an identifier of the terminal device, where the terminal identifier may be generated according to a cell radio network temporary identifier (C-RNTI), or may be generated according to the C-RNTI and the cell identifier.

For the scrambling identity, the network device may directly configure the value of the scrambling identity through RRC signaling, and the network device may also indicate the scrambling identity by: the terminal device and the network device are both pre-stored with a scrambling identifier (scrambling ID) table, the scrambling identifier table comprises a plurality of scrambling identifiers, and the network device calculates an initial value of a pilot sequence by using one or more scrambling identifiers in the scrambling identifier table through DCI or MAC CE indication.

When a scrambling identifier is assigned for the generation of a pilot sequence of the terminal device from the configured plurality of scrambling identifiers, the scrambling identifier index may be a serial number of the assigned scrambling identifier in the plurality of scrambling identifiers. For example, when two scrambling identifiers are configured for generation of a certain pilot sequence of the terminal device through an RRC message, the terminal device may obtain, through DCI or MAC CE, a sequence number used for determining the scrambling identifier of the pilot sequence, where the sequence number of the scrambling identifier may be 0 or 1, and the terminal device determines the scrambling identifier used for determining the pilot sequence according to the sequence number. When two or more scrambling identifiers are configured for generating a certain pilot sequence of the terminal device through an RRC message, but the system does not support other signaling to inform the terminal device which scrambling identifier to select for determining the pilot sequence, the scrambling identifier index is a default value, for example, 0. When only one scrambling identifier is configured for generating a certain pilot sequence of the terminal device through RRC message, the scrambling identifier index is a default value, for example, 0. In addition, if the current communication scenario does not support the use of DCI or MAC CE to transmit pilot parameters (including scrambling identifier), or when the network device does not configure the terminal device with the scrambling identifier, the scrambling identifier index is a default value, for example, 0.

Hereinafter, unless otherwise specified, floor and 2^pTime slot number, cell identifier and terminal markThe meanings of the identifier, the scrambling identifier and the scrambling identifier index are the same as those of the corresponding parameters in the above formula.

When the value of the correlation flag is not equal to X, the terminal device may calculate the initial value of the pilot sequence according to one of equations (4) to (12).

c _ init ═ (correlation identifier +1) × (2 × cell identifier +1) × 2^p+ scramble identification index (4)

c _ init ═ (2 × cell id +1) × 2^p+ correlation identification + scrambling identification index (5)

c _ init ═ (2 × cell id +1) × 2^p+ scramble identification index (6)

c _ init ═ (correlation identifier +1) × (2 × terminal identifier +1) × 2^p+ scramble identification index (7)

c _ init ═ (2 × terminal id +1) × 2^p+ correlation identification + scrambling identification index (8)

c _ init ═ (2 × terminal id +1) × 2^p+ scramble identification index (9)

c _ init ═ (correlation flag +1) × (2 × scrambling flag +1) × 2^p+ scramble identification index (10)

c _ init ═ (2 × scrambling mark +1) × 2^p+ correlation identification + scrambling identification index (11)

c _ init ═ (2 × scrambling mark +1) × 2^p+ scramble identification index (12)

The terminal equipment can calculate the pilot sequence after calculating the initial value of the pilot sequence, and generates a pilot signal according to the pilot sequence and the port number.

It should be understood that in the present application, "when …" means that the terminal device or the network device performs the corresponding processing under certain objective conditions, and is not limited to time, and does not require the terminal device or the network device to have a certain judgment action when implementing the corresponding function, and does not mean that there are other limitations.

In a possible implementation manner, the determining, by the terminal device, the pilot sequence according to the correlation identifier includes:

the terminal equipment determines a pilot frequency sequence according to the identification of the cell to which the terminal equipment belongs, at least one parameter of the identification of the terminal equipment and the scrambling identification and the correlation identification. For example, the pilot sequence is determined according to any one of equations (4), (5), (7), (8), (10), and (11).

In another embodiment of the present application, the initial value of the pilot sequence may be further obtained by at least one of the following calculation:

the first method is as follows:

c _ init ═ (correlation identifier + slot number +1) × (2 × cell identifier +1) × 2^p+ scramble identification index (15).

The second method comprises the following steps:

c _ init ═ (correlation identifier + slot number +1) × (2 × terminal identifier +1) × 2^p+ scramble identification index (16).

The third method comprises the following steps:

c _ init ═ (correlation flag + slot number +1) × (2 × scrambling flag +1) × 2^p+ scramble identification index (17).

The method is as follows:

c _ init ═ (correlation identifier +1) ((2 × Y +1) × 2)^p+ a scrambling identification index (18),

the fifth mode is as follows:

when the correlation flag takes a value of 0,

c_init＝(2*Y+1)*2^p+ a scrambling identification index (19),

when the correlation flag takes on the value 1

c _ init ═ time slot number +1 ═ 2 × (Y +1) × 2^p+ a scrambling identification index (20),

the variable Y may be a cell identifier, a terminal identifier, or a scrambling identifier.

The method six:

c _ init ═ (correlation mark: (14 × (slot number +1) + number of symbol) +1) × (2 × Y +1) × 2^p+ scramble identification index (21).

The method is as follows:

when the correlation flag takes a value of 0,

c_init＝(2*Y+1)*2^p+ a scrambling identity index (22);

when the correlation flag takes on the value 1

c _ init ═ 14 × No. (slot number +1) + No. of symbol +1 × No. (2 × Y +1) × 2^p+ scramble identification index (23).

In the above manner, Y may be a cell identifier, a terminal identifier, or a scrambling identifier, and the sequence number of the symbol is the sequence number of the symbol where the current pilot frequency is located.

In an embodiment, when any one of equations (15) to (18) and (21) is used to calculate the initial value of the pilot sequence, the value of the correlation indicator may be 0 or 1.

In an embodiment, when X is 1 in the foregoing embodiment and the correlation indicator takes a value of 0, the initial values of the pilot sequences calculated according to equations (6), (9) and (12) are respectively the same as the initial values of the resulting pilot sequences calculated according to equations (15), (16) and (17).

In an embodiment, when the value of the correlation identifier is 1:

the formula (15) is specifically c _ init ═ (timeslot number +1) × (2 × cell id +1) × 2^p+ scramble identification index;

the formula (16) is specifically c _ init ═ (timeslot number +1) × (2 × terminal id +1) × 2^p+ scramble identification index;

the formula (17) is specifically c _ init ═ (slot number +1) × (2 × scrambling identifier +1) × 2^p+ scramble identification index.

In a possible implementation manner, before the terminal device determines the pilot sequence according to the correlation identifier, the method 200 further includes:

s207, the terminal equipment receives the RRC message, and the RRC message comprises the configuration information of the scrambling identifier.

The configuration information may be a specific value of the scrambling identifier, or may be an index of the scrambling identifier, where when the configuration information is the index of the scrambling identifier, the terminal device and the network device both store a scrambling identifier table, and the index of the scrambling identifier is used to indicate which scrambling identifier in the scrambling identifier table is used by the terminal device to calculate the initial value of the pilot sequence.

Compared with the prior art, the method for indicating the scrambling identifier used by the terminal equipment through the RRC message and the DCI together reduces signaling overhead.

In one possible implementation, the RRC message includes configuration information of a plurality of scrambling identifiers, and the method 200 further includes:

s208, the terminal equipment receives the DCI, wherein the DCI comprises the index of the scrambling identifier, and the index of the scrambling identifier is used for indicating the scrambling identifier used for determining the pilot frequency sequence in the plurality of scrambling identifiers.

In a possible implementation manner, when determining the pilot sequence, the terminal device uses a scrambling identifier associated with a time slot in which the pilot signal is located as a parameter for determining the pilot sequence.

In the scheme provided in this embodiment, the scrambling identifier is associated with a timeslot number, the scrambling identifiers associated with different timeslot numbers may be different or the same (whether the scrambling identifiers are the same is specifically specified by a standard or determined by a network device), and when determining the pilot sequence of a specific timeslot, only the scrambling identifier associated with (corresponding to) the timeslot number of the timeslot can be used. The scrambling mark has the function of offsetting the negative influence of the change of the time slot number on the correlation of the pilot signal, so that even if the time slot number changes, the correlation of the pilot signal generated according to the time slot number and the correlation mark corresponding to the time slot number still meets the transmission requirement.

In one possible implementation, the terminal device determines the pilot sequence by using a cyclic shift value as a parameter for determining the pilot sequence. And the terminal equipment performs cyclic shift on the initial value of the pilot sequence calculated according to any one of the formulas (1) to (12) and (15) to (23) according to the cyclic shift value to obtain a target pilot sequence, namely the pilot sequence for generating the pilot signal.

In a possible implementation manner, before the terminal device determines the pilot sequence according to the value of the cyclic shift and the correlation identifier, the method 200 further includes:

s209, the terminal device receives an RRC message, or DCI, or MAC CE, where the RRC message, the DCI, or the MAC CE includes an index of a cyclic shift value.

An example of determining the pilot sequence based on the cyclic shift value is given below.

The terminal device determines a cyclic shift value for performing cyclic shift processing according to an index of a cyclic shift value in a received RRC message or DCI or MAC CE, where the terminal device and the network device both store a cyclic shift value set including a plurality of cyclic shift values, and the index of the cyclic shift value indicates which cyclic shift value in the cyclic shift value set is used for performing cyclic shift processing.

When the cyclic shift value found according to the cyclic shift value index is alpha, performing the following processing on x (n):

y(n)＝exp(j*α*n)*x(n)。

where y (n) denotes a pilot sequence obtained by cyclic shift processing, exp denotes an exponential function with a natural constant e as a base, and j denotes an imaginary unit, that is, j ═ sqrt (-1).

In a possible implementation manner, the acquiring, by the terminal device, the correlation identifier and the port number includes:

s210, the terminal equipment acquires the correlation identification and the port number according to the received RRC message. Alternatively, the first and second electrodes may be,

s211, the terminal equipment acquires the correlation identification according to the received RRC message.

S212, the terminal equipment acquires the port number according to the received DCI. Alternatively, the first and second electrodes may be,

s213, the terminal equipment acquires the correlation identifier and the port number according to the received DCI.

The method for generating the pilot signal provided by the present application is described above from the perspective of the terminal device, and the method for receiving the pilot signal provided by the present application is described in detail below from the perspective of the network device.

Fig. 3 is a schematic diagram of a method for receiving a pilot signal according to the present application. The method 300 includes:

s301, the network device sends the correlation identification and the port number to the terminal device, and the correlation identification and the port number are used for generating a pilot signal.

S302, the network device receives a pilot signal from the terminal device.

The relevance identifier may be a value selected from a particular set of values. For example, the value set a corresponds to the authorization-free transmission, the value set B corresponds to the authorization-based transmission, when the terminal device is in the authorization-free transmission mode, the network device may select a value from the value set a as the correlation identifier to send to the terminal device, and when the terminal device is in the authorization-based transmission mode, the network device may select a value from the value set B as the correlation identifier to send to the terminal device.

The pilot signal may be generated according to a port number and a pilot sequence, and the pilot sequence may be calculated according to a pilot parameter (for example, a scrambling identifier), it should be noted that the correlation identifier described in S301 is used to generate the pilot signal, and does not represent that the correlation identifier is necessarily the pilot parameter for calculating the pilot sequence, and the correlation identifier may also be used as an indication information to participate in the process of calculating the pilot sequence.

As is clear to the skilled person: in the method 300, the network device may be identical to the network device in the method 200, and the correlation identifier and the method for determining the pilot sequence according to the correlation identifier may be identical to the correlation identifier and the method for determining the pilot sequence according to the correlation identifier in the method 200, which are not described herein again for brevity.

In one possible implementation manner, the network device and the terminal device have preset values stored in advance,

when the value of the correlation identifier is equal to a preset value, the correlation identifier is used for indicating the terminal equipment to generate a pilot signal according to a first mode; or, when the value of the correlation identifier is not equal to the preset value, the correlation identifier is used for instructing the terminal device to generate the pilot signal according to the second mode.

In a possible implementation manner, the sending, by the network device, the correlation identifier and the port number to the terminal device includes:

s303, the network device sends an RRC message to the terminal device, where the RRC message includes the correlation identifier and the port number. Alternatively, the first and second electrodes may be,

s304, the network equipment sends RRC information to the terminal equipment, wherein the RRC information comprises the information of the correlation identification; s305, the network device sends DCI to the terminal device, where the DCI includes a port number.

The foregoing describes a method for generating a pilot signal based on a correlation identifier by a terminal device, and a method for receiving a pilot signal based on a correlation identifier by a network device, which may be applied in scenarios where unlicensed transmission and licensed-based transmission coexist, however, in some scenarios, only the requirement of unlicensed transmission may exist, and therefore, the significance of the correlation identifier in these scenarios is not great, and the correlation identifier may be omitted when designing a scheme for generating a pilot signal to reduce the complexity of the scheme.

Fig. 4 illustrates another method for generating pilot signals provided herein. The method 400 includes:

s401, the terminal device receives an RRC message, or DCI, or MAC CE, where the RRC message, or DCI, or MAC CE includes a port number, and the RRC message further includes at least one of a scrambling identifier, an identifier of a cell to which the terminal device belongs, and an identifier of the terminal device.

S402, the terminal equipment determines the pilot frequency sequence according to at least one of the scrambling identification, the identification of the cell to which the terminal equipment belongs and the identification of the terminal equipment.

S403, the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

An example of generating a pilot signal is given below.

The terminal equipment firstly calculates the initial value of the pilot frequency sequence according to the scrambling identifier, and the calculation formula is shown as formula (13).

c _ init ═ (2 × scrambling mark +1) × 2¹⁶ (13)

Then, a pilot sequence is calculated according to the initial value, and a pilot signal is generated according to the port number.

Two other embodiments can be obtained by replacing the scrambling identifier in the formula (13) with a cell identifier or a terminal identifier.

In one possible implementation, the terminal device determines the pilot sequence by using a cyclic shift value as a parameter for determining the pilot sequence.

In one possible implementation, the RRC message includes configuration information of the cyclic shift value.

The configuration information may be a specific cyclic shift value or an index of the cyclic shift value.

The method for acquiring the cyclic shift value and the method for performing the cyclic shift processing on the pilot sequence by the terminal device in the method 400 may refer to the related description in the method 200, and for brevity, no further description is given here.

Fig. 5 illustrates another method for receiving pilot signals provided herein. The method 500 includes:

s501, the network device sends an RRC message, a DCI, or a MAC CE, where the RRC message, the DCI, or the MAC CE includes a port number, the RRC message, the DCI, or the MAC CE further includes at least one of a scrambling identifier, an identifier of a cell to which the terminal device belongs, and an identifier of the terminal device, and the port number and the at least one of the scrambling identifier, the identifier of the cell to which the terminal device belongs, and the identifier of the terminal device are used to generate a pilot signal.

S502, the network device receives the pilot signal.

The pilot signal may be generated based on the port number and a pilot sequence, which may be calculated based on a pilot parameter (e.g., a scrambling identity, an identity of a cell to which the terminal device belongs, or an identity of the terminal device). For a specific calculation method, reference may be made to the method for calculating the pilot sequence in the method 400, and details are not described herein for brevity.

In one possible implementation, the RRC message further includes configuration information of a cyclic shift value used to generate the pilot signal.

The method for using the cyclic shift value in the method 500 can refer to the description of the cyclic shift process in the method 200, and for brevity, the description is not repeated herein.

Fig. 6 illustrates another method for generating a pilot signal provided by the present application. The method 600 comprises:

s601, the terminal device receives an RRC message or DCI or MAC CE, wherein the RRC message or DCI or MAC CE comprises a port number and a plurality of scrambling identifications.

S602, the terminal equipment determines a pilot frequency sequence according to the time slot number and the scrambling identifier corresponding to the time slot number in the plurality of scrambling identifiers.

S603, the terminal equipment generates a pilot signal according to the pilot sequence and the port number.

In the scheme provided in this embodiment, the scrambling identifier is associated with a timeslot number, and the scrambling identifiers associated with different timeslot numbers may be different or the same (whether the scrambling identifiers are the same or not is specifically specified by a standard or determined by a network device), and when determining the pilot sequence of a specific timeslot, only the scrambling identifier associated with (corresponding to) the timeslot number of the timeslot can be used, and the scrambling identifier functions to counteract the negative influence of the change of the timeslot number on the correlation of the pilot signal, so that even if the timeslot number changes, the correlation of the pilot signal generated according to the timeslot number and the correlation identifier corresponding to the timeslot number still meets the transmission requirement.

An example of generating a pilot signal is given below.

The terminal equipment firstly calculates the initial value of the pilot frequency sequence according to the scrambling identifier, and the calculation formula is shown as formula (14).

c _ init ═ (floor (slot number/2) +1) × (2 × scrambling mark +1) × 2^p+ scramble identification index (14)

In equation (14), the scrambling flag is a scrambling flag corresponding to the slot number among the plurality of scrambling flags configured in S601.

In one possible implementation, the RRC message includes configuration information of the value of the cyclic shift.

The method for acquiring the cyclic shift value and the method for performing the cyclic shift processing on the pilot sequence by the terminal device in the method 600 may refer to the related description in the method 200, and for brevity, no further description is given here.

Fig. 7 illustrates another method for receiving a pilot signal provided by the present application. The method 700 includes:

s701, the network device sends an RRC message, a DCI or an MAC CE, wherein the RRC message, the DCI or the MAC CE comprises a port number and a plurality of scrambling identifications, the scrambling identifications are in one-to-one correspondence with a plurality of time slot numbers, and the port number, the scrambling identifications and the time slot numbers are used for generating pilot signals.

S702, the network device receives the pilot signal.

The method for using the cyclic shift value in the method 700 can refer to the description of the cyclic shift process in the method 200, and for brevity, will not be described again.

In one embodiment, the terminal device may need to generate a plurality of pilot signals, which may be used to transmit a plurality of codewords in a time slot, with each codeword being transmitted using a different pilot signal; the multiple pilot signals may also be transmitted in different time slots, with different pilot signals being used by the terminal device depending on the type of time slot, e.g., the time slot used for initial transmission or the time slot used for retransmission. The method for generating multiple pilot signals by the terminal device is the same as the method in the foregoing embodiment, but multiple sets of parameters for generating the multiple pilot signals may be obtained in the same RRC message or DCI or MAC CE, where each set of parameters corresponds to the generation of one pilot signal. Examples of the methods of generating pilot signals and receiving pilot signals provided herein are described above in detail. It is understood that the terminal device and the network device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The present application may perform the division of the functional units for the terminal device and the network device according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the units in the present application is schematic, and is only one division of logic functions, and there may be another division manner in actual implementation.

In the case of an integrated unit, fig. 8 shows a possible structural diagram of the terminal device involved in the above-described embodiment. The terminal apparatus 800 includes: a processing unit 802 and a communication unit 803. Processing unit 802 is configured to control and manage actions of terminal device 800, e.g., processing unit 802 is configured to enable terminal device 800 to perform the various steps of fig. 2 and/or other processes for the techniques described herein. The communication unit 803 is used to support communication between the terminal device 800 and other communication devices, for example, to transmit a pilot signal generated by the processing unit 802 to a network device. The terminal device 800 may further include a storage unit 801 for storing program codes and data of the terminal device 800.

For example, the processing unit 802 acquires the correlation identification and the port number through the communication unit 803. The processing unit 802 is further configured to: determining a pilot frequency sequence according to the correlation identifier; and generating a pilot signal according to the pilot sequence and the port number.

The processing unit 802 may be a processor or a controller, such as a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a transceiver, a transceiving circuit, or the like. The storage unit 801 may be a memory.

When the processing unit 802 is a processor, the communication unit 803 is a transceiver, and the storage unit 801 is a memory, the terminal device according to the present application may be the terminal device shown in fig. 9.

Referring to fig. 9, the terminal apparatus 900 includes: a processor 902, a transceiver 903, a memory 901. The transceiver 903, the processor 902, and the memory 901 may communicate with each other via internal connection paths to transfer control and/or data signals.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the apparatuses and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The terminal device 800 and the terminal device 900 provided by the present application can meet the requirements of different transmission modes on the correlation of the pilot signals, and can be applied to both the authorization-based transmission (including the existing authorization-based transmission and the authorization-based transmission in the 5G mobile communication system) and the authorization-free transmission in the 5G mobile communication system, therefore, the terminal device 800 and the terminal device 900 have better backward compatibility.

In the case of an integrated unit, fig. 10 shows a schematic diagram of a possible structure of the network device involved in the above-described embodiment. The network device 1000 includes: a processing unit 1002 and a communication unit 1003. Processing unit 1002 is configured to control and manage the actions of network device 1000, e.g., processing unit 1002 is configured to enable network device 1000 to perform the various steps of fig. 3 and/or other processes for the techniques described herein. The communication unit 1003 is used to support communication between the network device 1000 and other communication devices, for example, to receive a pilot signal transmitted by a terminal device. The network device 1000 may further include a storage unit 1001 for storing program codes and data of the network device 1000.

For example, the communication unit 1003 performs: sending a correlation identification and a port number, wherein the correlation identification and the port number are used for generating a pilot signal; a pilot signal is received from a terminal device.

The processing unit 1002 performs: a correlation identifier and port are determined for the terminal device.

The processing unit 1002 may be a processor or controller, which may be, for example, a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 1003 may be a transceiver, a transmitting and receiving circuit, or the like. The storage unit 1001 may be a memory.

When the processing unit 1002 is a processor, the communication unit 1003 is a transceiver, and the storage unit 1001 is a memory, the network device according to the present application may be the network device shown in fig. 11.

Referring to fig. 11, the network device 1100 includes: a processor 1102, a transceiver 1103, a memory 1101. The transceiver 1103, the processor 1102 and the memory 1101 may communicate with each other via internal communication paths to transfer control and/or data signals.

The network device 1000 and the network device 1100 provided by the present application can meet the requirements of different transmission modes on the correlation of pilot signals, and can be applied to both grant-based transmission (including existing grant-based transmission and grant-based transmission in a 5G mobile communication system) and unlicensed transmission in the 5G mobile communication system, so that the network device 1000 and the network device 1100 have better backward compatibility.

In the case of an integrated unit, fig. 12 shows a schematic diagram of a possible structure of the terminal device involved in the above-described embodiment. The terminal apparatus 1200 includes: a processing unit 1202 and a communication unit 1203. Processing unit 1202 is configured to control and manage actions of terminal device 1200, e.g., processing unit 1202 is configured to enable terminal device 1200 to perform the various steps of fig. 4 and/or other processes for the techniques described herein. The communication unit 1203 is used to support communication between the terminal device 1200 and other communication devices, for example, to transmit the pilot signal generated by the processing unit 1202 to a network device. The terminal device 1200 may further include a storage unit 1201 for storing program codes and data of the terminal device 1200.

For example, the communication unit 1203 performs: and receiving an RRC message or DCI or MAC CE, wherein the RRC message or DCI or MAC CE comprises a port number, and the RRC message further comprises at least one of a scrambling identifier, an identifier of a cell to which the terminal equipment belongs and an identifier of the terminal equipment.

The processing unit 1202 is further configured to perform: determining a pilot frequency sequence according to one of the scrambling identifier, the identifier of the cell to which the terminal equipment belongs and the identifier of the terminal equipment; and generating a pilot signal according to the pilot sequence and the port number.

The processing unit 1202 may be a processor or controller, which may be, for example, a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 1203 may be a transceiver, a transceiving circuit, or the like. The storage unit 1201 may be a memory.

When the processing unit 1202 is a processor, the communication unit 1203 is a transceiver, and the storage unit 1201 is a memory, the terminal device according to the present application may be the terminal device shown in fig. 13.

Referring to fig. 13, the terminal apparatus 1300 includes: processor 1302, transceiver 1303, memory 1301. The transceiver 1303, the processor 1302, and the memory 1301 may communicate with each other via internal connection paths to transmit control and/or data signals.

According to the terminal device 1200 and the terminal device 1300 provided by the application, the pilot signal does not need to be generated according to the time slot number, and the pilot signal does not hop along with the time, so that the correlation among the pilot signals generated by different terminal devices is reduced. When terminal apparatus 1200 or terminal apparatus 1300 is applied to a scenario in which pilot signals transmitted by a plurality of terminal apparatuses are not completely orthogonal to each other, interference between the plurality of terminal apparatuses can be reduced.

In the case of an integrated unit, fig. 14 shows a schematic diagram of a possible structure of the network device involved in the above-described embodiment. The network device 1400 includes: a processing unit 1402 and a communication unit 1403. Processing unit 1402 is used to control and manage the actions of network device 1400, e.g., processing unit 1402 is used to support network device 1400 in performing the various steps of fig. 5 and/or other processes for the techniques described herein. A communication unit 1403 is used for supporting communication of the network device 1400 with other communication devices, for example, receiving pilot signals transmitted by terminal devices. The network device 1400 may also include a storage unit 1401 for storing program codes and data of the network device 1400.

For example, the communication unit 1403 performs: sending an RRC message, wherein the RRC message comprises a port number, the RRC message further comprises at least one of a scrambling identifier, an identifier of a cell to which the terminal equipment belongs and an identifier of the terminal equipment, and the port number and one identifier of the scrambling identifier, the identifier of the cell to which the terminal equipment belongs and the identifier of the terminal equipment are used for generating a pilot signal; a pilot signal is received from a terminal device.

The processing unit 1402 is configured to perform: at least one of a scrambling identity, an identity of a cell to which the terminal device belongs, and an identity of the terminal device is determined for the terminal device.

Processing unit 1402 may be a processor or controller, and may be, for example, a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 1403 may be a transceiver, a transceiver circuit, or the like. The storage unit 1401 may be a memory.

When the processing unit 1402 is a processor, the communication unit 1403 is a transceiver, and the storage unit 1401 is a memory, the network device according to the present application may be the network device shown in fig. 15.

Referring to fig. 15, the network device 1500 includes: a processor 1502, a transceiver 1503, and a memory 1501. The transceiver 1503, the processor 1502 and the memory 1501 may communicate with each other via an internal connection path to transmit control and/or data signals.

In the network device 1400 and the network device 1500 provided by the present application, the received pilot signal does not hop with time, so that the correlation between pilot signals generated by different terminal devices is reduced. When the network device 1400 or the network device 1500 is applied to a scenario where pilot signals transmitted by a plurality of terminal devices are not completely orthogonal, interference between the plurality of terminal devices may be reduced.

In the case of an integrated unit, fig. 16 shows a schematic diagram of a possible structure of the terminal device involved in the above-described embodiment. The terminal device 1600 includes: a processing unit 1602 and a communication unit 1603. Processing unit 1602 is configured to control and manage the actions of terminal device 1600, e.g., processing unit 1602 is configured to enable terminal device 1600 to perform the various steps of fig. 6 and/or other processes for the techniques described herein. Communication unit 1603 is used to support communication between terminal device 1600 and other communication devices, for example, to send pilot signals generated by processing unit 1602 to network devices. The terminal device 1600 may also include a storage unit 1601 for storing program codes and data of the terminal device 1600.

For example, the communication unit 1603 is to perform: receiving an RRC message or a DCI or a MAC CE, wherein the RRC message or the DCI or the MAC CE comprises a port number and a plurality of scrambling identifications.

The processing unit 1602 is configured to perform: determining a pilot frequency sequence according to the time slot number and a scrambling identifier corresponding to the time slot number in the plurality of scrambling identifiers; and generating a pilot signal according to the pilot sequence and the port number.

The processing unit 1602 may be a processor or controller, and may be, for example, a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 1603 may be a transceiver, a transceiving circuit, and the like. The storage unit 1601 may be a memory.

When the processing unit 1602 is a processor, the communication unit 1603 is a transceiver, and the storage unit 1601 is a memory, the terminal device related to the present application may be the terminal device shown in fig. 17.

Referring to fig. 17, the terminal apparatus 1700 includes: a processor 1702, a transceiver 1703, a memory 1701. The transceiver 1703, the processor 1702, and the memory 1701 may communicate with each other via internal connections to carry control and/or data signals.

According to the terminal device 1600 and the terminal device 1700 provided by the present application, the pilot signal is generated according to the time slot number and the scrambling identifier corresponding to the time slot number, the scrambling identifier is used for counteracting the negative effect of the change of the time slot number on the correlation of the pilot signal, even if the time slot number changes, the correlation of the pilot signal generated according to the time slot number and the correlation identifier corresponding to the time slot number still meets the transmission requirement, and when the terminal device 1600 or the terminal device 1700 is applied to a scenario where the pilot signals sent by a plurality of terminal devices are not completely orthogonal, the interference between the plurality of terminal devices can be reduced.

Fig. 18 shows a schematic diagram of a possible structure of the network device involved in the above-described embodiment, in the case of an integrated unit. The network device 1800 includes: a processing unit 1802, and a communication unit 1803. The processing unit 1802 is configured to control and manage actions of the network device 1800, for example, the processing unit 1802 is configured to support the network device 1800 for performing the various steps of fig. 7 and/or other processes for the techniques described herein. The communication unit 1803 is configured to support communication between the network device 1800 and other communication devices, for example, to receive a pilot signal transmitted by a terminal device. The network device 1800 may also include a storage unit 1801 for storing program codes and data for the network device 1800.

For example, the communication unit 1803 is configured to perform:

sending an RRC message or DCI or MAC CE to a terminal device, wherein the RRC message or DCI or MAC CE comprises a port number and a plurality of scrambling identifications, the scrambling identifications are in one-to-one correspondence with a plurality of time slot numbers, and the port number, the scrambling identifications and the time slot numbers are used for generating pilot signals; the pilot signal is received from the terminal device.

The processing unit 1802 may be a processor or controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 1803 may be a transceiver, a transceiving circuit, or the like. The storage unit 1801 may be a memory.

When the processing unit 1802 is a processor, the communication unit 1803 is a transceiver, and the storage unit 1801 is a memory, the network device according to the present application may be the network device shown in fig. 19.

Referring to fig. 19, the network device 1900 includes: a processor 1902, a transceiver 1903, and a memory 1901. The transceiver 1903, the processor 1902, and the memory 1901 may communicate with each other via internal communication paths to transfer control and/or data signals.

The network device 1800 and the network device 1900 provided by the application configure a plurality of scrambling identifiers for the terminal device, the scrambling identifiers correspond to a plurality of time slot numbers one by one, so that the terminal device generates the pilot signals according to the time slot numbers and the scrambling identifiers corresponding to the time slot numbers, the scrambling identifiers are used for offsetting negative effects of the change of the time slot numbers on the correlation of the pilot signals, even if the time slot numbers change, the correlation of the pilot signals generated according to the time slot numbers and the correlation identifiers corresponding to the time slot numbers still meets the transmission requirements, and when the network device 1800 or the network device 1900 is applied to a scene that the pilot signals sent by the plurality of terminal devices are not completely orthogonal, the interference among the plurality of terminal devices can be reduced.

It should be understood that the above-described transceiver may include a transmitter and a receiver. The transceiver may further include an antenna, and the number of antennas may be one or more. The memory may be a separate device or may be integrated into the processor.

The above-mentioned devices or parts of the devices may be implemented by being integrated into a chip, such as a baseband chip. The chip integrates a core and an input/output interface, etc., which can implement the functions of the communication unit in fig. 8, 10, 12, 14, 16, and 18, just that the signal at the input/output port is a baseband signal. The core may implement the processing functionality of the processing unit in fig. 8, 10, 12, 14, 16, and 18. The functions of the kernel and the input/output interface can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

The network devices or terminal devices in the apparatus and method embodiments completely correspond to each other, and corresponding steps are performed by corresponding modules, for example, a sending module method or a transmitter performs the steps sent in the method embodiment, a receiving module or a receiver performs the steps received in the method embodiment, and other steps except sending and receiving may be performed by a processing module or a processor. The functions of the specific modules can be referred to corresponding method embodiments, and are not described in detail.

In the embodiments of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not limit the implementation processes of the present application.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a terminal device. Of course, the processor and the storage medium may reside as discrete components in the terminal device and the network device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Versatile Disk (DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), etc.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method of generating a pilot signal, comprising:

the terminal equipment acquires the correlation identification and the port number;

the terminal equipment determines a pilot frequency sequence according to the correlation identifier;

the terminal equipment generates a pilot signal according to the pilot sequence and the port number;

the terminal equipment determines a pilot frequency sequence according to the correlation identifier, and the method comprises the following steps:

when the value of the correlation identifier is equal to a preset value, the terminal equipment determines the pilot frequency sequence according to at least one parameter of the identifier of the cell to which the terminal equipment belongs, the identifier of the terminal equipment and a scrambling identifier and a time slot number; alternatively, the first and second electrodes may be,

and when the value of the correlation identifier is not equal to a preset value, the terminal equipment determines the pilot frequency sequence according to at least one parameter of the identifier of the cell to which the terminal equipment belongs, the identifier of the terminal equipment and the scrambling identifier.

2. The method of claim 1, wherein before the terminal device determines the pilot sequence according to the correlation identifier, the method further comprises:

and the terminal equipment receives a Radio Resource Control (RRC) message, wherein the RRC message comprises the configuration information of the scrambling identifier.

3. The method of claim 2, wherein the RRC message includes configuration information for a plurality of scrambling identifiers, and wherein the method further comprises:

the terminal equipment receives downlink control information DCI, wherein the DCI comprises an index of a scrambling identifier, and the index of the scrambling identifier is used for indicating the scrambling identifier used for determining a pilot frequency sequence in the plurality of scrambling identifiers.

4. A method according to claim 2 or 3, characterized in that when determining said pilot sequence, the terminal device uses the scrambling identity associated with the time slot in which said pilot signal is located as a parameter for determining said pilot sequence.

5. Method according to any of claims 1 to 4, characterized in that the terminal device also uses a cyclic shift value as a parameter for determining the pilot sequence when determining the pilot sequence.

6. The method of claim 5, wherein before the terminal device determines the pilot sequence according to the correlation identifier, the method further comprises:

the terminal equipment receives an RRC message or downlink control information DCI or a Medium Access Control (MAC) Control Element (CE), wherein the RRC message or the DCI or the MAC CE comprises an index of the cyclic shift value.

7. The method according to any one of claims 1 to 6, wherein the terminal device obtains the correlation identifier and the port number, and comprises:

the terminal equipment acquires the correlation identification and the port number according to the received RRC message; alternatively, the first and second electrodes may be,

the terminal equipment acquires the correlation identification according to the received RRC message, and acquires the port number according to the received DCI; or

And the terminal equipment acquires the correlation identification and the port number according to the received DCI.

8. A method for receiving a pilot signal, comprising:

the method comprises the steps that network equipment sends a correlation identification and a port number to terminal equipment, wherein the correlation identification and the port number are used for generating pilot signals;

the network device receiving the pilot signal from the terminal device;

when the value of the correlation identifier is equal to a preset value, the correlation identifier is used for indicating the terminal equipment to generate a pilot signal according to a first mode; alternatively, the first and second electrodes may be,

and when the value of the correlation identifier is not equal to a preset value, the correlation identifier is used for indicating the terminal equipment to generate a pilot signal according to a second mode.

9. The method of claim 8, wherein the network device sends the correlation identifier and the port number to the terminal device, and wherein the method comprises:

the network equipment sends a Radio Resource Control (RRC) message to the terminal equipment, wherein the RRC message comprises the correlation identification and the port number; alternatively, the first and second electrodes may be,

the network equipment sends RRC information to the terminal equipment, wherein the RRC information comprises the correlation identification; and the network equipment sends Downlink Control Information (DCI) to the terminal equipment, wherein the DCI comprises the port number.

10. An apparatus for generating a pilot signal, comprising a processing unit configured to:

acquiring a correlation identifier and a port number;

determining a pilot frequency sequence according to the correlation identifier;

generating a pilot signal according to the pilot sequence and the port number;

the processing unit is specifically configured to:

when the value of the correlation identifier is equal to a preset value, determining the pilot frequency sequence according to at least one parameter of the identifier of the cell to which the device belongs, the identifier of the device and a scrambling identifier and a time slot number; alternatively, the first and second electrodes may be,

and when the value of the correlation identifier is not equal to a preset value, determining the pilot sequence according to at least one parameter of the identifier of the cell to which the device belongs, the identifier of the device and a scrambling identifier.

11. The apparatus according to claim 10, wherein the apparatus further comprises a communication unit, and the processing unit is specifically configured to:

receiving, by the communication unit, a radio resource control, RRC, message including configuration information of the scrambling identity.

12. The apparatus of claim 11, wherein the RRC message comprises configuration information for a plurality of scrambling identifiers, and wherein the processing unit is further configured to:

receiving, by the communication unit, downlink control information DCI, where the DCI includes an index of a scrambling identifier, and the index of the scrambling identifier is used to indicate a scrambling identifier used to determine a pilot sequence in the multiple scrambling identifiers.

13. The apparatus according to claim 11 or 12, wherein the processing unit is further configured to: and when the pilot sequence is determined, taking the scrambling identifier associated with the time slot in which the pilot signal is positioned as a parameter for determining the pilot sequence.

14. The apparatus according to any one of claims 10 to 13, wherein the processing unit is specifically configured to: the cyclic shift value is also used as a parameter in determining the pilot sequence when determining the pilot sequence.

15. The apparatus according to claim 14, wherein the apparatus further comprises a communication unit, and the processing unit is specifically configured to:

receiving, by the communication unit, an RRC message or downlink control information DCI or a medium access control MAC control element CE, where the RRC message or the DCI or the MAC CE includes an index of the cyclic shift value.

16. The apparatus according to any one of claims 10 to 15, wherein the apparatus further comprises a communication unit, and the processing unit is specifically configured to:

acquiring the correlation identifier and the port number according to the RRC message received by the communication unit; alternatively, the first and second electrodes may be,

acquiring the correlation identifier according to the RRC message received by the communication unit, and acquiring the port number according to the DCI received by the communication unit; alternatively, the first and second electrodes may be,

and acquiring the correlation identification and the port number according to the received DCI.

17. An apparatus for receiving a pilot signal, comprising a communication unit and a processing unit, wherein the processing unit is configured to control the communication unit to perform:

sending a correlation identification and a port number to a terminal device, wherein the correlation identification and the port number are used for generating a pilot signal;

receiving the pilot signal from the terminal device;

18. The apparatus according to claim 17, wherein the communication unit is specifically configured to:

sending a Radio Resource Control (RRC) message to the terminal device, wherein the RRC message comprises the correlation identifier and the port number; alternatively, the first and second electrodes may be,

sending an RRC message to the terminal equipment, wherein the RRC message comprises the correlation identifier; and sending Downlink Control Information (DCI) to the terminal equipment, wherein the DCI comprises the port number.