CN110958202B

CN110958202B - Reference signal scrambling method and device

Info

Publication number: CN110958202B
Application number: CN201811126385.0A
Authority: CN
Inventors: 孙晓东; 孙鹏; 刘昊
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2022-04-01
Anticipated expiration: 2038-09-26
Also published as: CN110958202A

Abstract

The embodiment of the invention discloses a reference signal scrambling method and equipment, relates to the technical field of communication, and aims to solve the problem of unbalanced transmission power of an antenna port. The method is applied to UE or network side equipment, and comprises the following steps: determining a scrambling mode for scrambling M reference signals, wherein each reference signal is respectively transmitted through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; for each reference signal, scrambling one reference signal by a target scrambling factor in the scrambling mode, wherein the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port transmitting the one reference signal belongs. The method can be applied to a scene that the UE or the network side equipment sends the reference signal.

Description

Reference signal scrambling method and device

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a reference signal scrambling method and device.

Background

In a New Radio (NR) system, a reference signal sequence may be generated from a pseudo-random sequence. The Reference Signal sequence may include a Demodulation Reference Signal (DMRS) sequence and a Channel State Information-Reference Signal (CSI-RS) sequence.

At present, in antenna ports that transmit the same type of reference signals, because the pseudorandom sequences corresponding to the antenna ports of different identifications are the same, the reference signal sequences corresponding to the antenna ports of different identifications are the same. For example, taking the type of the reference signal as DMRS type 1 as an example, if DMRS 1 employs antenna port 0 for transmission and DMRS 2 employs antenna port 4 for transmission, the pseudo-random sequences corresponding to antenna port 0 for transmitting DMRS 1 and antenna port 4 for transmitting DMRS 2 are the same, that is, the reference signal sequences corresponding to antenna port 0 for transmitting DMRS 1 and antenna port 4 for transmitting DMRS 2 are also the same.

However, when the two same reference signal sequences are precoded, when the precoding matrix adopted is an orthogonal precoding matrix, the numerical value corresponding to each symbol after precoding one reference signal sequence in the two same reference signal sequences is 0, that is, the transmission power corresponding to the antenna port that transmits the one reference signal sequence is 0, so that the transmission power of the antenna port is unbalanced.

Disclosure of Invention

The embodiment of the invention provides a reference signal scrambling method and a device, which are used for solving the problem of unbalanced transmission power of an antenna port.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a reference signal scrambling method, where the method is applied to a UE or a network side device, and includes: determining a scrambling mode for scrambling M reference signals, wherein each reference signal is respectively transmitted through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; for each reference signal, scrambling one reference signal by a target scrambling factor in the scrambling mode, wherein the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port transmitting the one reference signal belongs.

In a second aspect, an embodiment of the present invention provides an apparatus, which is a UE or a network side apparatus, and includes a determining unit and a scrambling unit. A determining unit, configured to determine a scrambling mode for scrambling M reference signals, where each reference signal is sent through at least one antenna port in different antenna port sets, where the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; and a scrambling unit, configured to scramble, for each reference signal, one reference signal according to a target scrambling factor by using the scrambling method determined by the determining unit, where the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port that transmits the one reference signal belongs.

In a third aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the reference signal scrambling method in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a network-side device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the reference signal scrambling method in the first aspect.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the reference signal scrambling method in the first aspect are implemented.

In the embodiment of the present invention, a scrambling manner for scrambling M reference signals may be determined (each reference signal is sent through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2); for each reference signal, the scrambling scheme is adopted, and one reference signal is scrambled according to a target scrambling factor (the target scrambling factor is a scrambling factor corresponding to the antenna port set to which the antenna port transmitting the one reference signal belongs). By the scheme, the target device can scramble the reference signal transmitted through at least one antenna port in different antenna port sets according to different scrambling factors corresponding to different antenna port sets, so that after the scrambled reference signals are precoded, the reference signal sequence corresponding to each reference signal in the reference signals may not be all 0, that is, the transmission power corresponding to the antenna port transmitting each reference signal sequence may not be 0, thereby balancing the transmission power among the antenna ports and improving the throughput of the communication system.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a reference signal scrambling method according to an embodiment of the present invention;

fig. 3 is a second schematic diagram of a reference signal scrambling method according to an embodiment of the present invention;

fig. 4 is a third schematic diagram illustrating a reference signal scrambling method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an antenna port mapping method according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of an apparatus according to an embodiment of the present invention;

FIG. 8 is a hardware diagram of an apparatus according to an embodiment of the present invention;

fig. 9 is a second hardware schematic diagram of an apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.

The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first antenna port set and the second antenna port set, etc. are used to distinguish different antenna port sets, rather than to describe a particular order of antenna port sets.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of reference signals means two or more reference signals.

The following explains some concepts and/or terms involved in the reference signal scrambling method and apparatus provided in the embodiments of the present invention.

DMRS type 1: refers to a DMRS type based on Interleaved Frequency Division Multiplexing (IFDM). For one DMRS symbol, the DMRS type 1 may support 4 orthogonal ports at most; for two adjacent DMRS symbols, this DMRS type 1 may support up to 8 orthogonal ports.

DMRS type 2: refers to a Frequency Domain-Orthogonal coding (FD-OCC) based DMRS type. For one DMRS symbol, the DMRS type 2 can support 6 orthogonal ports at most; for two adjacent DMRS symbols, this DMRS type 2 can support up to 12 orthogonal ports.

The embodiment of the invention provides a reference signal scrambling method and a device, which can determine a scrambling mode for scrambling M reference signals (each reference signal is respectively sent through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2); for each reference signal, the scrambling scheme is adopted, and one reference signal is scrambled according to a target scrambling factor (the target scrambling factor is a scrambling factor corresponding to the antenna port set to which the antenna port transmitting the one reference signal belongs). By the scheme, the target device can scramble the reference signal transmitted through at least one antenna port in different antenna port sets according to different scrambling factors corresponding to different antenna port sets, so that after the scrambled reference signals are precoded, the reference signal sequence corresponding to each reference signal in the reference signals may not be all 0, that is, the transmission power corresponding to the antenna port transmitting each reference signal sequence may not be 0, thereby balancing the transmission power among the antenna ports and improving the throughput of the communication system.

The reference signal scrambling method and device provided by the embodiment of the invention can be applied to various communication systems, such as a 5G communication system (NR system), a future evolution system or a plurality of communication fusion systems and the like. In particular, the method can be applied to a scenario where the UE and the network side device transmit the reference signal based on any one of these communication systems.

Fig. 1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system may include a UE 01 and a network side device 02. The UE 01 and the network side device 02 may establish a connection and perform communication.

The target device in the embodiment of the present invention may be UE 01 in the communication system shown in fig. 1, or may be network side device 02 in the communication system shown in fig. 1. When the target device is UE 01, UE 01 may interact with network side device 02; when the target device is the network side device 02, the network side device 02 may interact with the UE 01. For example, when the target device is UE 01, UE 01 may send the scrambled reference signal to the network side device 02; when the target device is the network side device 02, the network side device 02 may send the scrambled reference signal to the UE 01.

In an embodiment of the present invention, a UE is a device that provides voice and/or data connectivity to a user, a handheld device with wired/wireless connectivity, or other processing device connected to a wireless modem. A UE may communicate with one or more core Network devices via a Radio Access Network (RAN). The UE may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, or a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, that exchanges speech and/or data with the RAN, such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and so on. A UE may also be referred to as a User Agent (User Agent) or a terminal device, etc.

In the embodiment of the present invention, the network side device may be a base station. A base station is a device deployed in a RAN for providing wireless communication functions for UEs. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices having a base station function may be different, for example, in a 5G system, it may be referred to as a 5G base station (gNB); in a fourth Generation wireless communication (4-Generation, 4G) system, such as a Long Term Evolution (LTE) system, it may be referred to as an evolved NodeB (eNB); in a third generation mobile communication (3G) system, it may be referred to as a base station (Node B). As communication technology evolves, the name "base station" may change.

Based on the communication system shown in fig. 1, as shown in fig. 2, an embodiment of the present invention provides a reference signal scrambling method. The reference signal scrambling method may be applied to a target device, and the target device may specifically be a UE or a network side device. The reference signal scrambling method may include

steps

201 and 202 described below.

Step 201, the target device determines a scrambling mode for scrambling the M reference signals.

Each reference signal may be transmitted through at least one antenna port in different antenna port sets, and the different antenna port sets may correspond to different scrambling factors. M is an integer greater than or equal to 2.

It should be noted that, in the case that the target device shown in fig. 2 is a UE, the UE may be UE 01 in the communication system shown in fig. 1; in the case where the target device shown in fig. 2 is a network side device, the network side device may be the network side device 02 in the communication system shown in fig. 1.

Optionally, in the embodiment of the present invention, the reference signal may be a DMRS, may also be a CSI-RS, and may also be another possible reference signal. The method can be determined according to actual use requirements, and the embodiment of the invention is not particularly limited.

Optionally, in this embodiment of the present invention, the reference signal sequences corresponding to the M reference signals may be the same.

Further, the reference signal sequences corresponding to the M reference signals may be the same type of reference signal sequence. It is understood that in this case, the reference signal sequences corresponding to the M reference signals may be the same.

The relationship among the reference signals, the antenna port sets to which the reference signals belong, and the scrambling factors corresponding to the antenna port sets to which the reference signals belong will be exemplarily illustrated below by the following (1) to (9), respectively:

(1) and if the two reference signals are a first DMRS and a second DMRS respectively, and the type of the first DMRS and the type of the second DMRS are both DMRS types 1, the first DMRS corresponds to a first antenna port set, and the second DMRS corresponds to a second antenna port set.

The first set of antenna ports may be {0, 1, 2, 3} and the second set of antenna ports may be {4, 5, 6, 7 }. And the scrambling factor corresponding to the first antenna port set is

(or

) The scrambling factor corresponding to the second antenna port set is

(or

)。

For example, the first DMRS may be transmitted using antenna port 1 of the first set of antenna ports, and the second DMRS may be transmitted using antenna port 4 of the second set of antenna ports. Alternatively, the first DMRS may be transmitted using antenna port 0 and antenna port 1 of the first set of antenna ports, and the second DMRS may be transmitted using antenna port 4 and antenna port 5 of the second set of antenna ports.

(2) And if the two reference signals are respectively a third DMRS and a fourth DMRS, and the type of the third DMRS and the type of the fourth DMRS are both DMRS type 2, the third DMRS corresponds to a third antenna port set, and the fourth DMRS corresponds to a fourth antenna port set.

Wherein, the third antenna port set may be {0, 1, 2, 3, 4, 5}, and the fourth antenna port set may be {6, 7, 8, 9, 10, 11 }. And the scrambling factor corresponding to the third antenna port set is

(or

) The scrambling factor corresponding to the fourth antenna port set is

(or

)。

(3) If the two reference signals are a first CSI-RS and a second CSI-RS respectively, the total number of antenna ports included in the antenna port sets to which the first CSI-RS and the second CSI-RS belong is 8, and a Code Division Multiplex (CDM) type corresponding to the first CSI-RS and the second CSI-RS is CDM4, the first CSI-RS corresponds to a fifth antenna port set, and the second CSI-RS corresponds to a sixth antenna port set.

Wherein, the fifth antenna port set may be {0, 1, 4, 5} and the sixth antenna port set may be {2, 3, 6, 7 }. And the scrambling factor corresponding to the fifth antenna port set is

(or

) Sixth antennaThe port set corresponds to a scrambling factor of

(or

)。

(4) If the two reference signals are respectively a third CSI-RS and a fourth CSI-RS, the total number of antenna ports included in the antenna port sets to which the third CSI-RS and the fourth CSI-RS belong is 12, and the CDM type corresponding to the third CSI-RS and the fourth CSI-RS is CDM4, the third CSI-RS corresponds to a seventh antenna port set, and the fourth CSI-RS corresponds to an eighth antenna port set.

Wherein, the seventh antenna port set may be {0, 1, 4, 5, 8, 9}, and the eighth antenna port set may be {2, 3, 6, 7, 10, 11 }. And, the seventh antenna port set corresponds to a scrambling factor of

(or

) The eighth antenna port set corresponds to a scrambling factor of

(or

)。

(5) If the two reference signals are respectively a fifth CSI-RS and a sixth CSI-RS, the total number of antenna ports included in the antenna port sets to which the fifth CSI-RS and the sixth CSI-RS belong is 16, and the CDM type corresponding to the fifth CSI-RS and the sixth CSI-RS is CDM4, the fifth CSI-RS corresponds to a ninth antenna port set, and the sixth CSI-RS corresponds to a tenth antenna port set.

Wherein, the ninth antenna port set may be {0, 1, 4, 5, 8, 9, 12, 13}, and the tenth antenna port set may be {2, 3, 6, 7, 10, 11, 14, 15 }. And, the ninth antennaThe port set corresponds to a scrambling factor of

(or

) The tenth antenna port set corresponds to a scrambling factor of

(or

)。

(6) If the two reference signals are respectively a seventh CSI-RS and an eighth CSI-RS, the total number of antenna ports included in the antenna port sets to which the seventh CSI-RS and the eighth CSI-RS belong is 24, and the CDM type corresponding to the seventh CSI-RS and the eighth CSI-RS is CDM4, the seventh CSI-RS corresponds to an eleventh antenna port set, and the eighth CSI-RS corresponds to a twelfth antenna port set.

Wherein, the eleventh set of antenna ports may be {0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21}, and the twelfth set of antenna ports may be {2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23 }. And, the eleventh antenna port set corresponds to a scrambling factor of

(or

) The twelfth antenna port set corresponds to a scrambling factor of

(or

)。

(7) If the two reference signals are respectively a ninth CSI-RS and a tenth CSI-RS, the total number of antenna ports included in the antenna port sets to which the ninth CSI-RS and the second CSI-RS belong is 24, and the CDM type corresponding to the tenth CSI-RS and the second CSI-RS is CDM8, the ninth CSI-RS corresponds to a thirteenth antenna port set, and the tenth CSI-RS corresponds to a fourteenth antenna port set.

Wherein, the thirteenth set of antenna ports may be {0, 1, 2, 3, 8, 9, 10, 11, 16, 17, 18, 19}, and the fourteenth set of antenna ports may be {4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23 }. And, the thirteenth antenna port set corresponds to a scrambling factor of

(or

) The set of fourteenth antenna ports corresponds to a scrambling factor of

(or

)。

(8) If the two reference signals are an eleventh CSI-RS and a twelfth CSI-RS respectively, the total number of antenna ports included in the antenna port sets of the eleventh CSI-RS and the twelfth CSI-RS is 32, and the CDM type corresponding to the eleventh CSI-RS and the twelfth is CDM4, the eleventh CSI-RS corresponds to a fifteenth antenna port set, and the twelfth CSI-RS corresponds to a sixteenth antenna port set.

Wherein, the fifteenth antenna port set may be {0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29}, and the sixteenth antenna port set may be {2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31 }. And, the fifteenth antenna port set corresponds to a scrambling factor of

(or

) The sixteenth antenna port set corresponds to a scrambling factor of

(or

)。

(9) And if the two reference signals are a thirteenth CSI-RS and a fourteenth CSI-RS respectively, the total number of antenna ports included in the antenna port sets to which the thirteenth CSI-RS and the fourteenth CSI-RS belong is 32, and the CDM type corresponding to the thirteenth CSI-RS and the fourteenth CSI-RS is CDM8, the thirteenth CSI-RS corresponds to a seventeenth antenna port set, and the fourteenth CSI-RS corresponds to an eighteenth antenna port set.

Wherein, the seventeenth set of antenna ports may be {0, 1, 2, 3, 8, 9, 10, 11, 16, 17, 18, 19, 24, 25, 26, 27}, and the eighteenth set of antenna ports may be {4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23, 28, 29, 30, 31 }. And, the seventeenth antenna port set corresponds to a scrambling factor of

(or

) The eighteenth antenna port set corresponds to a scrambling factor of

(or

)。

It can be understood that, in the embodiment of the present invention, scrambling of CSI-RS transmitted through at least one antenna port in different antenna port sets can be achieved by setting a corresponding scrambling factor for an antenna port set to which the CSI-RS belongs.

Optionally, in this embodiment of the present invention, the scrambling method for scrambling M reference signals may include any one of the following: the method includes multiplying a time domain scrambling sequence corresponding to one reference signal by a target scrambling factor, multiplying a reference signal sequence corresponding to one reference signal by the target scrambling factor, and multiplying a resource mapping symbol corresponding to one reference signal by the target scrambling factor.

It should be noted that, the above three scrambling methods are specifically described in example 1, example 2, and example 3 in the following embodiments, and are not described herein again.

Optionally, in the embodiment of the present invention, in a case that the target device is a network side device, a scrambling manner for scrambling the M reference signals may be predefined; in the case that the target device is a UE, the scrambling manner for scrambling the M reference signals may be predefined or configured for the UE by the network side device.

For each reference signal, the target device scrambles one reference signal by the target scrambling factor using the scrambling scheme, step 202.

The target scrambling factor may be a scrambling factor corresponding to an antenna port set to which an antenna port of the target device transmits a reference signal belongs.

In this embodiment of the present invention, for each of the M reference signals, the target device may respectively scramble by using the methods described in step 201 and step 202, so as to scramble the M reference signals. In the following, an exemplary description is given by taking one reference signal (for example, referred to as a target reference signal) of the M reference signals as an example.

The target device scrambles the target reference signal according to the scrambling factor corresponding to the antenna port set to which the antenna port transmitting the target reference signal belongs (i.e. the target scrambling factor) by using the scrambling method determined in step 201.

Optionally, the target scrambling factor may be

Wherein j is a plurality, i is more than or equal to 1 and less than or equal to M, and i is an integer.

Illustratively, when M is 2, the purpose is toThe scrambling factors corresponding to the antenna port sets to which the antenna ports of the target device transmitting the two reference signals belong may be respectively

And

for example, when M is 3, the scrambling factors corresponding to the antenna port sets to which the antenna ports of the target device transmitting the two reference signals belong may be respectively

And

for example, when M is 4, the scrambling factors corresponding to the antenna port sets to which the antenna ports of the target device transmitting the two reference signals belong may be respectively

And

it should be noted that the embodiment of the present invention is directed to θ_iThe value of (b) is not limited, and can be determined according to actual use requirements. E.g. theta₁＝0，θ₂0.25, i.e.

Illustratively, the types of two reference signals (e.g., a first DMRS and a second DMRS) are DMRS type 1, the first DMRS is transmitted through an antenna port 1 in a set of {0, 1, 2, 3} of a first antenna port, the second DMRS is transmitted through an antenna port 4 in a set of {4, 5, 6, 7} of a second antenna port, and the first antenna port set corresponds to a scrambling factor of

And the second set of antenna ports corresponds to a scrambling factor of

The illustration is for example:

if the scrambling of the first and second DMRSs is scrambled in a manner of "multiplying a time domain scrambling sequence corresponding to one reference signal by a target scrambling factor", the target device may multiply the time domain scrambling sequence corresponding to the first DMRS by the scrambling factor

Multiplying and multiplying the time domain scrambling sequence corresponding to the second DMRS with the scrambling factor

Multiplication.

If the scrambling of the first and second DMRSs is scrambled in a manner of "multiplying a reference signal sequence corresponding to one reference signal by a target scrambling factor", the target device may combine the reference signal sequence corresponding to the first DMRS with the scrambling factor

Multiplying the reference signal sequence corresponding to the second DMRS by the scrambling factor

Multiplication.

If scrambling of the first and second DMRSs is performed in a manner of 'multiplying a resource mapping symbol corresponding to one reference signal by a target scrambling factor', the target device may multiply the resource mapping symbol corresponding to the first DMRS by the scrambling factor

Multiplying and multiplying the resource mapping symbol corresponding to the second DMRS with the scrambling factor

Multiplication.

Optionally, in the embodiment of the present invention, time-frequency resources occupied by antenna ports corresponding to the M reference signals are the same, time domain scrambling sequences corresponding to the M reference signals are orthogonal, and frequency domain scrambling sequences corresponding to the M reference signals are orthogonal.

Optionally, in this embodiment of the present invention, after scrambling the reference signal according to the target scrambling factor, the reference signal scrambling method provided in this embodiment of the present invention may further include: and precoding the scrambled M reference signals by adopting a precoding codebook. It is to be understood that after the scrambled reference signals are precoded, the reference signal sequence corresponding to each reference signal in the reference signals may not be all 0.

The embodiment of the invention provides a reference signal scrambling method, and because target equipment can scramble reference signals sent by at least one antenna port in different antenna port sets respectively according to different scrambling factors corresponding to different antenna port sets, after precoding a plurality of scrambled reference signals, reference signal sequences corresponding to each reference signal in the plurality of reference signals can not be all 0, namely the sending power corresponding to the antenna port sending each reference signal sequence can not be 0, so that the sending power among the antenna ports can be balanced, and the throughput of a communication system can be improved.

Optionally, with reference to fig. 2, as shown in fig. 3, in a case that the target device is a UE, before step 201, the method for scrambling a reference signal according to the embodiment of the present invention may further include step 203 described below. Accordingly, after step 202, the reference signal scrambling method provided by the embodiment of the present invention may further include step 204 described below.

Step 203, the network side device sends instruction information (hereinafter referred to as first instruction information) to the UE.

Correspondingly, the UE receives the first indication information from the network side equipment.

The first indication information may be used to indicate at least one information group. Each information group may be used to indicate M antenna ports, respectively. The M antenna ports may be used for the UE to transmit M reference signals, and the M antenna ports respectively belong to different antenna port sets.

Further, the step 203 may specifically include: and the network side equipment sends downlink control information DCI to the UE. Accordingly, the UE may receive DCI from the network-side device. The DCI comprises first indication information.

Optionally, in this embodiment of the present invention, the M antenna ports may be DMRS antenna ports corresponding to the UE when transmitting a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH).

Optionally, in this embodiment of the present invention, the one information group may include at least one of the following information: the method comprises the steps of antenna port domain value, the number of DMRS CDM groups without data, DMRS antenna port identification and the maximum symbol number of the preposed DMRS.

For example, in the case that the type of the DMRS is DMRS type 1, codeword 0 is in an activated state, and codeword 1 is in a deactivated state, the corresponding DMRS antenna port mapping table may be as shown in table 1 below.

TABLE 1

Referring to table 1, in case of an antenna port domain value of X1, the DMRS CDM group number without data is 1, and the port identification of the DMRS antenna port is: 0 and 5; in the case of an antenna port domain value of X2, the number of DMRS CDM groups without data is 1, and the port identification of the DMRS antenna port is: 1 and 4; in the case of an antenna port domain value of X3, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 0 and 5; in the case of an antenna port domain value of X4, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 1 and 4; in the case of an antenna port domain value of X5, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 2 and 7; in the case of an antenna port domain value of X6, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 3 and 6.

For example, in the case that the type of the DMRS is DMRS type 2, codeword 0 is in an activated state, and codeword 1 is in a deactivated state, the corresponding DMRS antenna port mapping table may be as shown in table 2 below.

TABLE 2

Referring to table 2, in case of an antenna port domain value of X1, the DMRS CDM group number without data is 1, and the port identification of the DMRS antenna port is: 0 and 7; in the case of an antenna port domain value of X2, the number of DMRS CDM groups without data is 1, and the port identification of the DMRS antenna port is: 1 and 6; in the case of an antenna port domain value of X3, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 0 and 7; in the case of an antenna port domain value of X4, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 1 and 6; in the case of an antenna port domain value of X5, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 2 and 9; in the case of an antenna port domain value of X6, the number of DMRS CDM groups without data is 2, and the port identification of the DMRS antenna port is: 3 and 8; in the case of an antenna port domain value of X7, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 0 and 7; in the case of an antenna port domain value of X8, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 1 and 6; in the case of an antenna port domain value of X9, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 2 and 9; in the case of an antenna port domain value of X10, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 3 and 8; in the case of an antenna port domain value of X11, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 4 and 11; in the case of an antenna port domain value of X12, the number of DMRS CDM groups without data is 3, and the port identification of the DMRS antenna port is: 5 and 10.

Step 204, the UE sends the scrambled M reference signals through M antenna ports according to the first indication information.

Illustratively, taking the above table 1 as an example, if the information group indicated by the first indication information is an information group corresponding to an antenna port domain value of X1, the antenna ports indicated by the information group are antenna port 0 and antenna port 5. As such, the UE may transmit one reference signal through antenna port 0 and another reference signal through antenna port 0 according to the first indication information. Wherein, the antenna port 0 is one antenna port in the first antenna port set {0, 1, 2, 3}, and the antenna port 5 is one antenna port in the second antenna port set {4, 5, 6, 7 }.

In the reference signal scrambling method provided by the embodiment of the present invention, the network side device sends the indication information to the UE, so that the UE can respectively send the scrambled reference signals at different antenna ports corresponding to different antenna port sets.

Optionally, with reference to fig. 2, as shown in fig. 4, in a case that the target device is a network-side device, after step 201, the reference signal scrambling method provided in the embodiment of the present invention further includes step 205 described below. Correspondingly, after step 202, the reference signal scrambling method provided by the embodiment of the invention may further include step 206 and step 207.

Step 205, the network side device sends the second indication information to the UE.

Correspondingly, the UE receives the second indication information from the network side device.

The second indication information may be used to indicate a scrambling mode in which the network side device scrambles the M reference signals.

It should be noted that fig. 4 exemplarily illustrates that the network side device first performs step 205 and then performs step 202. It is understood that, in actual implementation, step 202 may be executed first, and then step 205 may be executed; step 202 and step 205 may also be performed simultaneously. The method can be determined according to actual use requirements, and the embodiment of the invention is not particularly limited.

Step 206, the network side device sends the scrambled M reference signals through the M antenna ports.

Correspondingly, the UE receives the scrambled M reference signals from the network side device.

And step 207, the UE descrambles the scrambled M reference signals according to the second indication information.

In the reference signal scrambling method provided by the embodiment of the present invention, when the target device is a network side device, the network side device sends the second indication information to the UE, so that the UE can know the scrambling mode of the reference signal scrambling. In this way, the UE may descramble the scrambled reference signal according to the scrambling method indicated by the second indication information.

In order to more clearly illustrate the three scrambling manners in step 201 and step 202 of the above-described embodiment of the present invention, the following examples will be illustrated by example 1, example 2, and example 3, respectively:

examples 1, 1,

Taking the type of the reference signal as DMRS type 1 as an example, a scrambling manner of "multiplying a time domain scrambling sequence corresponding to one reference signal by a target scrambling factor" will be exemplarily described. Table 3 is a corresponding relationship between an antenna port for transmitting a reference signal of DMRS type 1 and a time domain scrambling sequence provided in the prior art, and table 4 is a corresponding relationship between an antenna port for transmitting a reference signal of DMRS type 1 and a time domain scrambling sequence provided in an embodiment of the present invention. Wherein, p is used for identifying an antenna port, l' is used for representing a starting identifier of a DMRS time domain occupation position, and w_t(l') is used to represent the time-domain scrambling sequence.

TABLE 3

As shown in table 3, assuming that the first antenna port set is {0, 1, 2, 3}, and the second antenna port set is {4, 5, 6, 7}, when l' is 0, the time-domain scrambling sequence corresponding to each antenna port in the first antenna port is 1, and the time-domain scrambling sequence corresponding to each antenna port in the second antenna port is 1; when l' is 1, the first dayThe time domain scrambling sequence corresponding to each antenna port in the line port is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port is-1. Multiplying a time domain scrambling sequence corresponding to each antenna port in the first antenna port set by a scrambling factor

(θ₁0) and multiplying the time domain scrambling sequence corresponding to each antenna port in the second set of antenna ports by the scrambling factor

(θ₂0.25), the correspondence of the antenna ports to the time-domain scrambling sequences can be obtained as shown in table 4.

TABLE 4

As shown in table 4, when l' is 0, the time domain scrambling sequence corresponding to each antenna port in the first antenna port set is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port set is + j; when l' is 1, the time domain scrambling sequence corresponding to each antenna port in the first antenna port is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port set is-j.

Taking the type of the reference signal as DMRS type 2 as an example, an exemplary scrambling method of "multiplying a time domain scrambling sequence corresponding to one reference signal by a target scrambling factor" will be described. Table 5 is a corresponding relationship between another antenna port for transmitting a reference signal of DMRS type 2 and a time-domain scrambling sequence provided in the prior art, and table 6 is a corresponding relationship between another antenna port for transmitting a reference signal of DMRS type 2 and a time-domain scrambling sequence provided in an embodiment of the present invention. Wherein, p is used for identifying an antenna port, l' is used for representing a starting identifier of a DMRS time domain occupation position, and w_t(l') is used to represent the time-domain scrambling sequence.

TABLE 5

As shown in table 5, assuming that the first antenna port set is {0, 1, 2, 3, 4, 5}, and the second antenna port set is {6, 7, 8, 9, 10, 11}, when l' is 0, the time-domain scrambling sequence corresponding to each antenna port in the first antenna port set is 1, and the time-domain scrambling sequence corresponding to each antenna port in the second antenna port set is 1; when l' is 1, the time domain scrambling sequence corresponding to each antenna port in the first antenna port set is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port set is-1. Multiplying a time domain scrambling sequence corresponding to each antenna port in the first antenna port set by a scrambling factor

(θ₂0.25), the correspondence of the antenna ports to the time-domain scrambling sequences can be obtained as shown in table 6.

TABLE 6

As shown in table 6, when l' is 0, the time domain scrambling sequence corresponding to each antenna port in the first antenna port set is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port set is + j; when l' is 1, the time domain scrambling sequence corresponding to each antenna port in the first antenna port set is 1, and the time domain scrambling sequence corresponding to each antenna port in the second antenna port set is-j.

Examples 2,

Taking the type of the reference signal as DMRS type 1 as an example, a scrambling method of "multiplying a reference signal sequence corresponding to one reference signal by a target scrambling factor" is exemplarily described.

In a communication system, the conventional reference signal sequence r (m) is generated in a manner that:

wherein c (, denotes a pseudo-random sequence, and m is a positive integer.

Assuming that the first set of antenna ports is {0, 1, 2, 3} and the second set of antenna ports is {4, 5, 6, 7}, then r (m) is multiplied by the scrambling factor

(θ₁0), a reference signal sequence corresponding to the first antenna port set may be obtained (i.e., formula one):

and, multiplying r (m) by a scrambling factor

(θ₂0.25), a reference signal sequence corresponding to the second antenna port set may be obtained (i.e., formula two):

wherein n is a positive integer.

It should be noted that, in the above embodiment, the type of the reference signal is DMRS type 1 as an example. It can be understood that, for the case that the type of the reference signal is DMRS type 2, if the first antenna port set is {0, 1, 2, 3, 4, 5} and the second antenna port set is {6, 7, 8, 9, 10, 11}, the reference signal sequence corresponding to the first antenna port set may be obtained according to the first formula, and the reference signal sequence corresponding to the second antenna port set may be obtained according to the second formula. Reference may be made to the description of the foregoing embodiments, which are not repeated herein.

Examples 3,

Exemplarily, a scrambling method of "multiplying a resource mapping symbol corresponding to a reference signal by a target scrambling factor" is exemplified by taking the reference signal as a DMRS.

Existing DMRS resource mapping symbols in a communication system

The generation method comprises the following steps:

wherein, beta^DMRSFor representing a power scaling factor; k' is used for representing a starting identifier of the DMRS frequency domain occupied position; l' is used for representing a starting identifier of the DMRS time domain occupied position; w is a_f(k') for representing a frequency domain scrambling sequence; w is a_t(l') for representing a time-domain scrambling sequence; r (, is used to denote DMRS sequences.

In will

Multiplication by a scrambling factor

(θ₁0) and

(θ₂0.25), equation three can be obtained:

wherein p is the identifier of the antenna port, and p is a positive integer. p is a radical of₀Is a predetermined value, and p₀Is a positive integer.

In case that the type of the reference signal is DMRS type 1, p₀That is, the scrambling factor for the antenna port set {0, 1, 2, 3} is 1, and the scrambling factor for the antenna port set {4, 5, 6, 7} is j. In case that the type of the reference signal is DMRS type 2, p₀When the scrambling factor is equal to 6, that is, the scrambling factor for the antenna port set {0, 1, 2, 3, 4, 5} is 1, and the scrambling factor for the antenna port set {6, 7, 8, 9, 10, 11} is j.

Exemplarily, a scrambling method of "multiplying a resource mapping symbol corresponding to one reference signal by a target scrambling factor" is exemplified by a CSI-RS with 8 ports as a reference signal.

Existing CSI-RS resource mapping symbols in a communication system

The generation method comprises the following steps:

wherein, beta_CSI-RSFor representing a power scaling factor; k' is used for representing a starting identifier of the CSI-RS frequency domain occupied position; l' is used for representing a starting identifier of a CSI-RS time domain occupation position; w is a_f(k') for representing a frequency domain scrambling sequence; w is a_t(l') for representing a time-domain scrambling sequence; r (, x) is used to represent the CSI-RS sequence.

In will

Multiplication by a scrambling factor

(θ₁0) and

(θ₂0.25), equation four can be obtained:

in the case that the reference signal is the CSI-RS of 8 ports, the scrambling factor for the port set {0, 1, 4, 5} is j, and the scrambling factor for the port set {2, 3, 4, 5} is 1.

The reference signal scrambling method provided by the embodiment of the invention can scramble the reference signal by any one of the three scrambling modes, so that the imbalance of the transmission power among antenna ports can be avoided, and the throughput of a communication system can be improved.

Based on the communication system shown in fig. 1, as shown in fig. 5, an embodiment of the present invention further provides an antenna port mapping method. The antenna port mapping method may include steps 501-503 described below.

Step 501, the network side device sends first indication information to the UE.

Wherein, the indication information (i.e. the first indication information) may be used to indicate at least one information group. Each information group may be used to indicate M antenna ports, respectively. The M antenna ports are used for the UE to transmit M reference signals. The M antenna ports belong to different antenna port sets, respectively.

Optionally, the network side device may send downlink control information DCI to the UE, where the DCI may include the first indication information. That is, the UE may receive the first indication information from the network side device through the DCI.

For the description of step 501, reference may be made to the related description of step 203 in the foregoing embodiment, and details are not repeated here.

Step 502, the UE determines M antenna ports according to the first indication information.

Step 503, the UE sends M reference signals through M antenna ports.

Accordingly, the network side device receives M reference signals from the UE.

For the description of step 503, reference may be made to the description related to step 204 in the foregoing embodiment, and details are not described here.

Optionally, in this embodiment of the present invention, the M reference signals may be scrambled reference signals.

According to the antenna port mapping method provided by the embodiment of the invention, the network side equipment can enable the UE to respectively send the reference signals at different antenna ports corresponding to different antenna port sets by sending the indication information to the UE.

As shown in fig. 6, an embodiment of the invention provides an apparatus 600. The apparatus 600 may be a UE or a network side apparatus, and the apparatus 600 may include: a determining unit 601 and a scrambling unit 602. The determining unit 601 is configured to determine a scrambling manner for scrambling M reference signals, where each reference signal is sent through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; a scrambling unit 602, configured to scramble, for each reference signal, one reference signal according to a target scrambling factor by using the scrambling scheme determined by the determining unit 601, where the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port that transmits one reference signal belongs.

Optionally, in this embodiment of the present invention, the scrambling method may include any one of the following: the method includes multiplying a time domain scrambling sequence corresponding to one reference signal by a target scrambling factor, multiplying a reference signal sequence corresponding to one reference signal by the target scrambling factor, and multiplying a resource mapping symbol corresponding to one reference signal by the target scrambling factor.

Optionally, in the embodiment of the present invention, the target scrambling factor may beTo be provided with

Optionally, in this embodiment of the present invention, when M is 2, scrambling factors corresponding to antenna port sets to which antenna ports that transmit two reference signals belong are respectively equal to

And

wherein, theta₁＝0，θ₂＝0.25。

Optionally, in this embodiment of the present invention, the two reference signals are a first demodulation reference signal DMRS and a second DMRS, the type of the first DMRS and the type of the second DMRS are both DMRS types 1, the first DMRS corresponds to the first antenna port set, and the second DMRS corresponds to the second antenna port set. Wherein the first antenna port set is {0, 1, 2, 3}, and the second antenna port set is {4, 5, 6, 7 }.

Optionally, in this embodiment of the present invention, the two reference signals are a third demodulation reference signal DMRS and a fourth DMRS, the type of the third DMRS and the type of the fourth DMRS are both DMRS types 2, the third DMRS corresponds to a third antenna port set, and the fourth DMRS corresponds to a fourth antenna port set. Wherein the third antenna port set is {0, 1, 2, 3, 4, 5}, and the fourth antenna port set is {6, 7, 8, 9, 10, 11 }.

Optionally, with reference to fig. 6, as shown in fig. 7, the apparatus is a UE. The apparatus may further comprise a receiving unit 603 and a transmitting unit 604. A receiving unit 603, configured to receive indication information from a network side device, where the indication information is used to indicate at least one information group, each information group is used to indicate M antenna ports, the M antenna ports are used for a UE to send M reference signals, and the M antenna ports belong to different antenna port sets respectively; a sending unit 604, configured to send, according to the indication information received by the receiving unit 603, the M reference signals scrambled by the scrambling unit 602 through the M antenna ports.

Optionally, in this embodiment of the present invention, the receiving unit 603 may be specifically configured to receive a DCI from a network side device, where the DCI includes indication information.

The device provided by the embodiment of the present invention can implement the process shown in the above method embodiment, and is not described herein again to avoid repetition.

Embodiments of the present invention provide an apparatus, where the apparatus may scramble reference signals sent through at least one antenna port in different antenna port sets according to different scrambling factors corresponding to different antenna port sets, so that after the apparatus precodes a plurality of scrambled reference signals, a reference signal sequence corresponding to each reference signal in the plurality of reference signals may not be all 0, that is, transmission power corresponding to an antenna port that sends each reference signal sequence may not be 0, so that the apparatus may balance transmission power between the antenna ports, and may improve throughput of a communication system.

Fig. 8 is a schematic hardware configuration diagram of an apparatus for implementing various embodiments of the present invention. The device may be a terminal device 800, the terminal device 800 including but not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, and a power supply 811. Those skilled in the art will appreciate that the configuration of terminal device 800 shown in fig. 8 is not intended to be limiting, and terminal device 800 may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal device 800 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal device, a wearable device, a pedometer, and the like.

It should be noted that the terminal device shown in fig. 8 may be a UE in the communication system shown in fig. 1.

The processor 810 determines a scrambling mode for scrambling M reference signals, where each reference signal is sent through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; and for each reference signal, scrambling one reference signal by adopting the scrambling mode according to a target scrambling factor, wherein the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port for transmitting one reference signal belongs.

Embodiments of the present invention provide a terminal device, where the terminal device may scramble reference signals sent through at least one antenna port in different antenna port sets according to different scrambling factors corresponding to different antenna port sets, so that after the terminal device precodes a plurality of scrambled reference signals, a reference signal sequence corresponding to each reference signal in the plurality of reference signals may not be all 0, that is, transmission power corresponding to an antenna port that sends each reference signal sequence may not be 0, so that the device may balance transmission power between the antenna ports, and may improve throughput of a communication system.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 801 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 810; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 801 can also communicate with a network and other devices through a wireless communication system.

The terminal device 800 provides the user with wireless broadband internet access through the network module 802, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 803 may convert audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output related to a specific function performed by the terminal apparatus 800 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.

The input unit 804 is used for receiving an audio or video signal. The input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics processor 8041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted via the radio frequency unit 801 or the network module 802. The microphone 8042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 801 in case of a phone call mode.

The terminal device 800 also includes at least one sensor 805, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 8061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 8061 and/or the backlight when the terminal device 800 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 805 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 806 is used to display information input by the user or information provided to the user. The Display unit 806 may include a Display panel 8061, and the Display panel 8061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 807 is operable to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal apparatus 800. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 8071 (e.g., operations by a user on or near the touch panel 8071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 8071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 810, receives a command from the processor 810, and executes the command. In addition, the touch panel 8071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 8071 can be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation on or near the touch panel 8071, the touch operation is transmitted to the processor 810 to determine the type of the touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of the touch event. Although in fig. 8, the touch panel 8071 and the display panel 8061 are two independent components to implement the input and output functions of the terminal apparatus 800, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the terminal apparatus 800, and this is not limited herein.

The interface unit 808 is an interface for connecting an external device to the terminal apparatus 800. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 800 or may be used to transmit data between the terminal apparatus 800 and an external device.

The memory 809 may be used to store software programs as well as various data. The memory 809 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 809 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 810 is a control center of the terminal device 800, connects various parts of the entire terminal device 800 by various interfaces and lines, and performs various functions of the terminal device 800 and processes data by running or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby monitoring the terminal device 800 as a whole. Processor 810 may include one or more processing units; optionally, the processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.

Terminal device 800 may also include a power supply 811 (e.g., a battery) for powering the various components, and optionally, power supply 811 may be logically coupled to processor 810 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the terminal device 800 includes some functional modules that are not shown, and are not described in detail here.

Fig. 9 is a schematic diagram of a hardware structure of a device for implementing the embodiment of the present invention. The device may specifically be a network side device 900, where the network side device 900 includes: a processor 901, a transceiver 902, a memory 903, a user interface 904, and a bus interface 905.

It should be noted that the network side device shown in fig. 9 may be a network side device in the communication system shown in fig. 1.

The processor 901 is configured to determine a scrambling mode for scrambling M reference signals, where each reference signal is sent through at least one antenna port in different antenna port sets, where the different antenna port sets correspond to different scrambling factors, and M is an integer greater than or equal to 2; and for each reference signal, scrambling one reference signal by the scrambling mode according to a target scrambling factor, wherein the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port transmitting one reference signal belongs.

In the network-side device provided in the embodiment of the present invention, because the network-side device can scramble the reference signal sent through at least one antenna port in different antenna port sets according to different scrambling factors corresponding to different antenna port sets, after the network-side device precodes the scrambled reference signals, the reference signal sequence corresponding to each reference signal in the reference signals may not be all 0, that is, the transmission power corresponding to the antenna port that sends each reference signal sequence may not be 0, so that the network-side device can balance the transmission power between the antenna ports, and can improve the throughput of the communication system.

In embodiments of the invention, in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further in connection with embodiments of the present invention. Bus interface 905 provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different UEs, the user interface 904 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.

In addition, the network side device 800 further includes some functional modules that are not shown, and are not described herein again.

Optionally, an embodiment of the present invention further provides a UE, including a processor 810 as shown in fig. 8, a memory 809, and a computer program stored in the memory 809 and capable of running on the processor 810, where the computer program is executed by the processor 810 to implement the processes of the foregoing method embodiments, and can achieve the same technical effects, and details are not described here to avoid repetition.

Optionally, an embodiment of the present invention further provides a network-side device, which includes a processor 901 as shown in fig. 9, a memory 903, and a computer program that is stored in the memory 903 and is executable on the processor 901, and when the computer program is executed by the processor 110, the computer program implements the processes of the foregoing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. Examples of the computer-readable storage medium include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.

It should be noted that, in the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method of the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A reference signal scrambling method is applied to target equipment, wherein the target equipment is User Equipment (UE) or network side equipment, and the method comprises the following steps:

determining a scrambling mode for scrambling M reference signals, wherein each reference signal is respectively transmitted through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, the reference signal sequences corresponding to the M reference signals are the same, and M is an integer greater than or equal to 2;

and for each reference signal, scrambling one reference signal by adopting the scrambling mode according to a target scrambling factor, wherein the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port for transmitting the reference signal belongs.

2. The method of claim 1, wherein the scrambling means comprises any of: multiplying a time domain scrambling sequence corresponding to the one reference signal by the target scrambling factor, multiplying a reference signal sequence corresponding to the one reference signal by the target scrambling factor, and multiplying a resource mapping symbol corresponding to the one reference signal by the target scrambling factor.

3. The method of claim 1, wherein the target scrambling factor is

4. The method of claim 2, wherein when M-2, the antenna ports transmitting two reference signals belong toScrambling factors corresponding to the antenna port sets are respectively

And

wherein, theta₁＝0，θ₂＝0.25。

5. The method of claim 4, wherein the two reference signals are first and second demodulation reference signals (DMRS) and wherein the first and second DMRS are both of DMRS type 1, wherein the first DMRS corresponds to a first set of antenna ports and the second DMRS corresponds to a second set of antenna ports;

wherein the first antenna port set is {0, 1, 2, 3}, and the second antenna port set is {4, 5, 6, 7 }.

6. The method of claim 4, wherein the two reference signals are a third demodulation reference signal (DMRS) and a fourth DMRS, respectively, wherein the third DMRS is of a DMRS type 2 and the fourth DMRS is of a DMRS type 2, wherein the third DMRS corresponds to a third set of antenna ports and the fourth DMRS corresponds to a fourth set of antenna ports;

wherein the third antenna port set is {0, 1, 2, 3, 4, 5}, and the fourth antenna port set is {6, 7, 8, 9, 10, 11 }.

7. The method of claim 1, wherein the antenna ports corresponding to the M reference signals occupy the same time-frequency resources, wherein the time-domain scrambling sequences corresponding to the M reference signals are orthogonal, and wherein the frequency-domain scrambling sequences corresponding to the M reference signals are orthogonal.

8. The method according to any of claims 1 to 7, wherein the target device is the UE; the method further comprises the following steps:

receiving indication information from the network side device, where the indication information is used to indicate at least one information group, each information group is used to indicate M antenna ports, the M antenna ports are used for the UE to send the M reference signals, and the M antenna ports belong to different antenna port sets respectively;

and sending the scrambled M reference signals through the M antenna ports according to the indication information.

9. The method according to claim 8, wherein the receiving indication information from the network-side device comprises:

and receiving Downlink Control Information (DCI) from the network side equipment, wherein the DCI comprises the indication information.

10. An apparatus, which is a User Equipment (UE) or a network side apparatus, and is characterized in that the apparatus comprises: a determination unit and a scrambling unit;

the determining unit is configured to determine a scrambling mode for scrambling M reference signals, where each reference signal is sent through at least one antenna port in different antenna port sets, the different antenna port sets correspond to different scrambling factors, reference signal sequences corresponding to the M reference signals are the same, and M is an integer greater than or equal to 2;

the scrambling unit is configured to scramble, for each reference signal, one reference signal according to a target scrambling factor by using the scrambling mode determined by the determining unit, where the target scrambling factor is a scrambling factor corresponding to an antenna port set to which an antenna port that transmits the one reference signal belongs.

11. The apparatus of claim 10, wherein the scrambling means comprises any of: multiplying a time domain scrambling sequence corresponding to the one reference signal by the target scrambling factor, multiplying a reference signal sequence corresponding to the one reference signal by the target scrambling factor, and multiplying a resource mapping symbol corresponding to the one reference signal by the target scrambling factor.

12. The apparatus of claim 10, wherein the target scrambling factor is

13. The apparatus according to claim 12, wherein when M is 2, the scrambling factors corresponding to the antenna port sets to which the antenna ports transmitting the two reference signals belong are respectively

And

wherein, theta₁＝0，θ₂＝0.25。

14. The apparatus of claim 13, wherein the two reference signals are first and second demodulation reference signals (DMRS) and, respectively, wherein the first and second DMRS are both of DMRS type 1, wherein the first DMRS corresponds to a first set of antenna ports, and wherein the second DMRS corresponds to a second set of antenna ports;

15. The apparatus of claim 13, wherein the two reference signals are a third demodulation reference signal (DMRS) and a fourth DMRS, respectively, wherein the third DMRS is of a DMRS type 2 and the fourth DMRS is of a DMRS type 2, wherein the third DMRS corresponds to a third set of antenna ports and the fourth DMRS corresponds to a fourth set of antenna ports;

16. The apparatus of claim 10, wherein the antenna ports corresponding to the M reference signals occupy the same time-frequency resources, and wherein the time-domain scrambling sequences corresponding to the M reference signals are orthogonal and the frequency-domain scrambling sequences corresponding to the M reference signals are orthogonal.

17. The apparatus according to any of claims 10 to 16, wherein the apparatus is the UE; the device further comprises a receiving unit and a transmitting unit;

the receiving unit is configured to receive indication information from the network side device, where the indication information is used to indicate at least one information group, each information group is used to indicate M antenna ports, the M antenna ports are used for the UE to send the M reference signals, and the M antenna ports belong to different antenna port sets respectively;

the sending unit is configured to send, according to the indication information received by the receiving unit, the M reference signals scrambled by the scrambling unit through the M antenna ports.

18. The apparatus of claim 17,

the receiving unit is specifically configured to receive downlink control information DCI from the network side device, where the DCI includes the indication information.

19. A user equipment, UE, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the reference signal scrambling method according to any of claims 1 to 9.

20. A network-side device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the reference signal scrambling method according to any one of claims 1 to 7.

21. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the reference signal scrambling method according to any one of claims 1 to 9.