WO2017092535A1

WO2017092535A1 - Transmission method and device for reference signal sequence

Info

Publication number: WO2017092535A1
Application number: PCT/CN2016/104093
Authority: WO
Inventors: 栗忠峰; 李华; 朱有团
Original assignee: 华为技术有限公司
Priority date: 2015-12-02
Filing date: 2016-10-31
Publication date: 2017-06-08
Also published as: CN106817210A; CN106817210B

Abstract

Provided is a transmission method and device for reference signal sequence. The method comprises: a user equipment receiving configuration information sent a base station, wherein the configuration information is used for indicating a first basic sequence group allocated for the user equipment by the base station, the configuration information is generated by the base station based on a division method for a basic sequence group in a communication system where the base station is located, the basic sequence group in the communication system is divided into a plurality of basic sequence sets by means of the division method, each of the basic sequence sets contains at least one basic sequence group, at least one basic sequence set of the plurality of basic sequence sets contains at least two basic sequence groups, and a first basic sequence set to which the first basic sequence group belongs is one of the plurality of basic sequence sets; the user equipment determining the first basic sequence group according to the configuration information; And the user equipment generating a reference signal according to the first basic sequence group, and sending same to the base station.

Description

Reference signal sequence transmission method and device

The present application claims priority to Chinese Patent Application No. 20151087251, filed on Dec. 2, 2015, the entire disclosure of which is incorporated herein by reference. in.

Technical field

Embodiments of the present application relate to the field of communications, and more particularly, to a method and apparatus for transmitting a reference signal sequence.

Background technique

With the popularity of smart terminals, users need larger uplink transmission rates, and base stations need higher spectrum utilization. Multi-User Multiple-Input Multiple-Output (MU-MIMO) can support multiple User Equipments (UEs) to transmit data to the base station using the same time-frequency resources, or one UE can also It can improve the uplink transmission rate and improve the spectrum efficiency by supporting more layers on the same time-frequency resource.

In the current LTE system, each cell supports a maximum of 4 MIMO uplink MIMO, and the uplink capacity is small.

Summary of the invention

An embodiment of the present application provides a method and a device for transmitting a reference signal sequence, so that each cell can be configured with more base sequence groups and supports MIMO of more streams, thereby enabling different UEs in the cell to adopt different base sequences. Group, increase uplink capacity and improve spectrum efficiency.

In a first aspect, a method for transmitting a reference signal sequence is provided. The method includes: receiving, by a user equipment, configuration information sent by a base station, where the configuration information is used to indicate a first base sequence group allocated by the base station to the user equipment, where The configuration information is generated by the base station according to a division manner of a base sequence group in the communication system where the base station is located, and the division manner divides the base sequence group in the communication system into a plurality of base sequence sets, and each of the base sequences The set includes at least one base sequence group, and at least one of the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is the plurality of bases One of the sequence sets; the user equipment determines the first base sequence group according to the configuration information; the user equipment generates a reference signal according to the first base sequence group, and sends the reference signal to the base station.

With reference to the first aspect, in a first possible implementation, the first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, and the dividing manner is a network side device pair managing the base station. a partitioning manner of the base sequence group of the communication system, the configuration information includes a set number and a serial number within the set, the set number is used to indicate a number of the first base sequence set, and the serial number in the set is used to represent the first base a sequence number of the sequence group in the first base sequence set; the user equipment determines the first base sequence group according to the configuration information, where the user equipment determines, according to the set number and the sequence number in the set, the first base sequence group .

With reference to the first aspect, in a second possible implementation manner, the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a total number of sets and a sequence number in the set. The sequence number in the set is used to indicate the sequence number of the first base sequence group in the first base sequence set, and the base sequence group included in each of the base sequence sets of the plurality of base sequence sets divided according to the division manner The number of the plurality of base sequence sets is equal to the total number of the set; the user equipment determines the first base sequence group according to the configuration information, where the user equipment is shifted according to the set of the user equipment. a mode, a set hop corresponding to the current time slot in which the user equipment sends the reference signal, and a total number of the set to determine the first base sequence set; the user equipment determines the first base sequence according to the first base sequence set and the set internal sequence number group.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the user equipment is configured according to the set shift mode of the user equipment, and the current time slot corresponding to the current time slot of the user equipment that sends the reference signal. The total number of hops and the set determines that the first set of base sequences is represented by the following formula:

i=(f _ch (n _s )+f _cs )mod M,

Where i denotes the set number of the first base sequence set in the plurality of base sequence sets, M denotes the total number of sets, n _s denotes the current time slot, and f _cs denotes a set shift mode of the user equipment, by a cell identifier ID of the serving cell to which the user equipment belongs, a parameter of the high layer signaling configuration of the serving cell to which the user equipment belongs, and a total number M of the set, or a parameter configured by the high layer signaling of the serving cell to which the user equipment belongs, and the parameter The total number of sets M is determined, f _ch (n _s ) represents the set hop corresponding to the current time slot n _s , and is 0 when the set hop is off, and is the value when the set hop is enabled.

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , the initialization value of each frame is determined by the cell ID of the serving cell to which the user equipment belongs, and the higher layer signaling of the serving cell to which the user equipment belongs. The configured parameters and the total number of the sets M are determined or determined by the parameters of the high layer signaling configuration of the serving cell to which the user equipment belongs and the total number M of the sets.

With reference to the first aspect, in a fourth possible implementation, the first base sequence set is used The base device is configured to send a base sequence set corresponding to a current time slot of the reference signal, where the configuration information includes a set of base sequence groups and a sequence number within the set, where the sequence number is used to indicate that the first base sequence group is at the first base a sequence number in the sequence set, each base sequence set of the plurality of base sequence sets divided according to the partitioning manner, the number of base sequence groups included in the set is equal to the number of base sequence groups in the set; the user equipment determines the The first base sequence group is specifically implemented as follows: the user equipment determines the first according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the number of base sequence groups in the set. a base sequence set; the user equipment determines the first base sequence group according to the first base sequence set and the set inner sequence number.

With reference to the fourth possible implementation manner of the foregoing aspect, in a fifth possible implementation manner, the user equipment is configured according to the set shift mode of the user equipment, and the current time slot corresponding to the current time slot of the user equipment that sends the reference signal The number of hops and the number of base sequence groups in the set determines that the first base sequence set is represented by the following formula:

i=(f _ch (n _s )+f _cs )mod(floor(M ₀ /g)),

Where i denotes the set number of the first base sequence set in the plurality of base sequence sets, g denotes the number of base sequence groups in the set, n _s denotes the current time slot, and M ₀ denotes a communication system in which the base station is located The number of base sequence groups, f _cs represents the set shift mode of the user equipment, the cell identifier ID of the serving cell to which the user equipment belongs, the parameters of the high layer signaling configuration of the serving cell to which the user equipment belongs, and the set The number of the inner base sequence group g is determined, or is determined by the parameter of the high layer signaling configuration of the serving cell to which the user equipment belongs and the number of base sequence groups g in the set, and f _ch (n _s ) represents the current time slot n _s Set hop, when the set hop is off, the value is 0. When the set hop is enabled, the value is

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , the initialization value of each frame is determined by the cell ID of the serving cell to which the user equipment belongs, and the higher layer signaling of the serving cell to which the user equipment belongs. The configured parameters and the number of base sequence groups g in the set are determined or determined by the parameters of the high layer signaling configuration of the serving cell to which the user equipment belongs and the number of base sequence groups g in the set.

With reference to the first aspect or any of the foregoing possible implementation manners, in a sixth possible implementation manner, the specific configuration is: the configuration information is sent by using RRC signaling and/or DCI.

In a second aspect, a method for transmitting a reference signal sequence is provided, the method includes: the base station transmitting, to the user equipment, configuration information, where the configuration information is used to indicate a first base sequence group allocated by the base station to the user equipment, where The configuration information is generated by the base station according to a division manner of a base sequence group in the communication system where the base station is located, where the division manner divides the base sequence group in the communication system where the base station is located into a plurality of base sequence sets, each The set of base sequences comprises at least one base sequence set, And at least one of the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the multiple base sequence sets; the base station receives the user The device generates a reference signal according to the first base sequence group.

With reference to the second aspect, in a first possible implementation manner, the first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, where the division manner is to manage the base station. a division manner of the base sequence group of the communication system by the network side device, where the configuration information includes a set number and a serial number within the set, where the set number is used to indicate the number of the first base sequence set, and the serial number in the set is used to represent The sequence number of the first base sequence group in the first base sequence set, the set number and the sequence number in the set are used by the user equipment to determine the first base sequence group according to the set number and the set internal sequence number.

With reference to the second aspect, in a second possible implementation, the first base sequence set is a base sequence set corresponding to the current time slot of the user equipment that sends the reference signal, and the configuration information includes the total number of sets. And a sequence number in the set, where the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the base sequence sets included in the plurality of base sequence sets divided according to the division manner includes The number of the basic sequence groups is equal, and the total number of the plurality of base sequence sets is equal to the total number of the sets, and the total number of the sets and the sequence number in the set are used for the user equipment according to the set shift mode of the user equipment, the user equipment The first base sequence group is determined by a set hop corresponding to the current time slot in which the reference signal is transmitted and the total number of the sets.

With reference to the second aspect, in a third possible implementation, the first base sequence set is a base sequence set corresponding to the current time slot of the user equipment that sends the reference signal, where the configuration information includes the set. a number of base sequence groups and a sequence number within the set, wherein the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the plurality of base sequence sets divided according to the division manner The sequence set includes a number of base sequence groups equal to the number of base sequence groups in the set, the number of base sequence groups in the set and the sequence number in the set are used by the user equipment according to the set shift mode of the user equipment, and the user equipment is transmitting The first base sequence group is determined by the set hop corresponding to the current time slot of the reference signal and the number of base sequence groups in the set.

With reference to the second aspect or any of the foregoing possible implementation manners, in a fourth possible implementation manner, the specific configuration is: the configuration information is sent by using RRC signaling and/or DCI.

In a third aspect, a method for transmitting a reference signal sequence is proposed. The method includes: the network side device divides a base sequence group of a communication system into a plurality of base sequence sets according to a division manner, and each of the base sequence sets The number of base sequence groups included is not less than one, and the plurality of base sequence sets At least one of the base sequence sets includes at least two base sequence groups; the network side device sends the division result of the division mode to the base station under the network side device, so that the base station sends the configuration to the user equipment according to the division manner. The information is such that the user equipment transmits the reference signal based on the base sequence group indicated by the configuration information.

In a fourth aspect, a method for transmitting a reference signal sequence is provided. The method includes: receiving, by a user equipment, configuration information sent by a base station, where the configuration information is used to indicate that the base station allocates a first base sequence for the user equipment, and allocates Each base sequence group of the serving cell of the user equipment is extended to a base sequence group containing g base sequences, g is not less than ceil (S/Q), and Q is the maximum number of MIMO streams that a base sequence can support. The value S is the number of MIMO streams that the serving cell of the user equipment needs to support, S>Q, the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system, and the user equipment The number of resource blocks RB of the uplink bandwidth is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), and Z is greater than a minimum prime number equal to M ₀ *g+1, where M ₀ represents the number of base sequence groups in the communication system in which the base station is located; the user equipment determines the first base sequence according to the configuration information; The base sequence generates a reference signal and sends it to the base .

With reference to the fourth aspect, in a first possible implementation, the first base sequence group is a base sequence group corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a group serial number, the group The internal sequence number is used to indicate the sequence number of the first base sequence in the first base sequence group; the user equipment determines the first base sequence according to the configuration information, which is specifically implemented by: the user equipment is shifted according to the sequence of the user equipment And determining, by the user equipment, the first base sequence group in the group hop corresponding to the current time slot; the user equipment determines the first base sequence in the first base sequence group according to the group internal sequence number.

With reference to the fourth aspect, in a second possible implementation manner, the user equipment determines, according to the sequence shift mode of the user equipment, the group hop corresponding to the user equipment in the current time slot, using the following formula Indicates:

u=(f _gh (n _s )+f _ss )mod M ₀ ,

Where u denotes the group number of the first base sequence group, n _s denotes the current time slot, f _ss denotes the sequence shift mode of the user equipment, the cell identity ID of the serving cell to which the user equipment belongs, and the user equipment The parameter of the high-level signaling configuration of the serving cell to be determined is determined by the parameter of the high-level signaling configuration of the serving cell to which the user equipment belongs, and f _gh (n _s ) represents the group corresponding to the current time slot n _{s of the} transmitting reference signal. Jump, when the group hop is off, the value is 0. When the group hop is enabled, the value is

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , and the initialization value of each frame is configured by the cell ID of the serving cell to which the user equipment belongs and the higher layer signaling of the serving cell to which the user equipment belongs. The parameter is determined or determined by parameters of a high layer signaling configuration of the serving cell to which the user equipment belongs.

With reference to the fourth aspect or any of the foregoing possible implementation manners, in a third possible implementation manner, the specific configuration is: the configuration information is sent by using RRC signaling or DCI.

In a fifth aspect, a method for transmitting a reference signal sequence is provided. The method includes: the base station transmitting configuration information to the user equipment, where the configuration information is used to indicate that the base station allocates a first base sequence for the user equipment, and allocates the Each base sequence group of the serving cell of the user equipment is extended to a base sequence group containing g base sequences, g is not less than ceil (S/Q), and Q is a maximum value of MIMO streams that a base sequence can support. S is the number of MIMO streams that the serving cell of the user equipment needs to support, S>Q, the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system, and the user equipment The number of resource blocks RB of the uplink bandwidth is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), and Z is greater than or equal to The minimum prime number of M ₀ *g+1, where M ₀ represents the number of base sequence groups in the communication system in which the base station is located; and the base station receives the reference signal generated by the user equipment according to the first base sequence.

With reference to the fifth aspect, in a first possible implementation manner, the first base sequence group is a base sequence group corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes The serial number of the group is used to indicate the sequence number of the first base sequence in the first base sequence group, and the user equipment can be according to the sequence shift mode of the user equipment, and the user equipment is in the group corresponding to the current time slot. The jump determines the first base sequence set.

With reference to the fifth aspect or any of the foregoing possible implementation manners, in a second possible implementation manner, the specific configuration is: the configuration information is sent by using RRC signaling or DCI.

In a sixth aspect, a user equipment is provided for performing the method of the first aspect or the possible implementation of any of the aspects of the first aspect.

In particular, the user equipment may comprise means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a seventh aspect, a base station is provided for performing the method of any of the possible implementations of the second aspect or the second aspect.

In particular, the base station may comprise means for performing the method of any of the possible implementations of the second aspect or the second aspect.

In an eighth aspect, a network side device is provided for performing the third aspect or the third aspect A method in a possible implementation.

Specifically, the network side device may include a unit for performing the method in any of the possible implementations of the third aspect or the third aspect.

In a ninth aspect, a user equipment is provided for performing the method of the fourth aspect or a possible implementation of any of the aspects of the fourth aspect.

In particular, the user equipment may comprise means for performing the method of any of the possible implementations of the fourth aspect or the fourth aspect.

According to a tenth aspect, a base station is provided for performing the method in any of the possible implementations of the fifth aspect or the fifth aspect.

In particular, the base station may comprise means for performing the method of any of the possible implementations of the fifth or fifth aspect.

In an eleventh aspect, a user equipment is provided, comprising a memory and a processor for storing instructions for executing instructions stored in the memory, and performing execution of instructions stored in the memory such that the processor A method in a possible implementation of the first aspect or any aspect of the first aspect.

According to a twelfth aspect, a base station is provided, comprising: a memory for storing instructions for executing instructions stored in the memory, and a processor for causing the processor to execute The method of any of the second aspect or any of the possible implementations of the second aspect.

A thirteenth aspect, a network side device is provided, comprising a memory and a processor for storing instructions for executing instructions stored in the memory, and performing execution of the instructions stored in the memory such that the processing The method of any of the possible implementations of the third aspect or the third aspect is performed.

In a fourteenth aspect, a user equipment is provided, comprising a memory and a processor for storing instructions for executing instructions stored in the memory, and performing execution of instructions stored in the memory such that the processor A method in a possible implementation of the fourth aspect or any aspect of the fourth aspect.

In a fifteenth aspect, a base station is provided, comprising: a memory for storing instructions for executing instructions stored in the memory, and a processor for causing the processor to execute A method in any of the possible implementations of the fifth aspect or the fifth aspect.

In a sixteenth aspect, a computer readable storage medium storing one or more programs, the one or more programs comprising instructions that are executed by a portable electronic device including a plurality of applications The portable electronic device can be caused to perform the method of the first aspect or the possible implementation of any of the aspects of the first aspect.

In a seventeenth aspect, a computer readable storage medium storing one or more programs, the one or more programs comprising instructions that are executed by a portable electronic device including a plurality of applications The portable electronic device can be caused to perform the method of any of the possible implementations of the second aspect or the second aspect.

In a eighteenth aspect, a computer readable storage medium storing one or more programs, the one or more programs comprising instructions that are executed by a portable electronic device including a plurality of applications The portable electronic device can be caused to perform the method of any of the possible implementations of the third aspect or the third aspect.

In a nineteenth aspect, a computer readable storage medium storing one or more programs, the one or more programs comprising instructions that are executed by a portable electronic device including a plurality of applications The portable electronic device can be caused to perform the method of the fourth aspect or the possible implementation of any of the aspects of the fourth aspect.

In a twentieth aspect, a computer readable storage medium storing one or more programs, the one or more programs comprising instructions that are executed by a portable electronic device including a plurality of applications The portable electronic device can be caused to perform the method of any of the possible implementations of the fifth aspect or the fifth aspect.

In the embodiment of the present application, after receiving the configuration information sent by the base station based on the divided base sequence set, the user equipment determines, according to the base sequence group indicated by the configuration information, a base sequence group used by the user equipment to send the reference signal, so that each cell More base sequence groups are allocated to support more stream MIMO, so that different UEs in the cell can adopt different base sequence groups, increase uplink capacity, and improve spectrum efficiency.

DRAWINGS

1 is a schematic diagram of a base sequence grouping of LTE.

2 is a schematic diagram of a transmission method of a reference signal sequence in an embodiment of the present application.

FIG. 3 is an interaction flowchart of reference signal sequence transmission in the embodiment of the present application.

FIG. 4 is a schematic diagram of root sequence group division in the embodiment of the present application.

FIG. 5 is another flow chart of the interaction of the reference signal sequence transmission in the embodiment of the present application.

FIG. 6 is a schematic diagram of another transmission method of a reference signal sequence in an embodiment of the present application.

FIG. 7 is a schematic diagram of still another transmission method of a reference signal sequence in the embodiment of the present application.

FIG. 8 is still another flow chart of interaction of reference signal sequence transmission in the embodiment of the present application.

FIG. 9 is still another flow chart of interaction of reference signal sequence transmission in the embodiment of the present application.

FIG. 10 is a schematic diagram of another base sequence grouping according to an embodiment of the present application.

FIG. 11 is a schematic diagram of still another base sequence grouping according to an embodiment of the present application.

FIG. 12 is a schematic diagram of still another base sequence grouping according to an embodiment of the present application.

FIG. 13 is a schematic diagram of still another transmission method of a reference signal sequence in the embodiment of the present application.

FIG. 14 is a schematic structural diagram of a physical device according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In order to facilitate the understanding of the embodiments of the present application, several elements introduced in the description of the embodiments of the present application are first introduced herein.

The function ceil(x): represents the smallest integer greater than x. For example, ceil(7.3)=8, ceil(3.9)=4, and ceil(4)=4.

The function floor(x): represents the largest integer less than x. For example, floor(7.3)=7, floor(3.9)=7, floor(4)=4.

The function round(x): represents the nearest integer to x. For example, round(7.3)=7, round(3.9)=4, round(4)=4, round(4.5)=5.

ZC sequence: Fully referred to as a Zadoff-Chu sequence, orthogonal sequences can be generated by cyclic shifting.

Root sequence: In LTE, the ZC sequence is generally used as the root sequence. In order to maximize the number of indexes, the length of the root sequence is generally taken as a prime number. For example, assuming that the length of the root sequence is 31, a positive integer that is 31-symmetric and less than 31 shares (31-1)=30, that is, when the length of the root sequence is 31, the number of indexes is 30.

Base sequence: The root sequence is extended by a loop to obtain a base sequence. The length of the base sequence is the sequence length of the reference signal required by the user equipment, typically an integer multiple of 12. For example, the length of the root sequence For example, by copying the five elements preceding the root sequence to the back, it is expanded into a base sequence of length 36 (i.e., 3 RB).

Base sequence group: One base sequence group may include one or more base sequences. For example, in the 30-group base sequence group of LTE, if the base sequence length is less than or equal to 60 (ie, 5 RB), each base sequence group includes 1 base sequence; if the base sequence length is greater than or equal to 72 (ie, 6 RB), each The base sequence set includes 2 base sequences.

Base sequence set: In the embodiment of the present application, a base sequence group of a communication system may be divided, and a plurality of base sequence groups grouped together form a set, which is called a base sequence set. One or more base sequence groups may be included in a base sequence set. In the embodiment of the present application, the number of base sequence groups in the base sequence set is usually greater than 1.

The technical solution of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access ( WCDMA (Wideband Code Division Multiple Access), General Packet Radio Service (GPRS), Long Term Evolution (LTE), and the like.

A user equipment (UE), which may also be called a mobile terminal, a mobile user equipment, or the like, may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or in-vehicle mobile device, The wireless access network exchanges languages and/or data.

The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The present application is not limited, but for convenience of description, the following embodiments are described by taking an eNB as an example.

1 is a schematic diagram of a base sequence grouping of LTE. In the LTE protocol, a ZC (Zadoff-Chu) sequence is used to generate an uplink reference signal, including a Physical Uplink Shared Channel (PUSCH) Demodulation Reference Signal (DRS), and a physical uplink control channel ( Physical Uplink Control Channel (PUCCH) DRS and Sounding Reference Signal (SRS). The ZC sequence is cyclically shifted to generate an orthogonal reference signal. As shown in Figure 1, the base sequence

Contains 30 groups, group number u∈{0,1,...,29}, when 1≤m≤5, each group contains only one base sequence, ie the serial number v=0 in the group;

At the time, each group contains 2 base sequences, that is, the group number v=0,1. m is the length of the base sequence in RB,

Indicates the maximum number of RBs for uplink transmission.

2 is a schematic diagram of a transmission method of a reference signal sequence in an embodiment of the present application. The method of Figure 2 is performed by a user equipment.

201. The user equipment receives the configuration information sent by the base station, where the configuration information is used to indicate the first base sequence group allocated by the base station to the user equipment.

The configuration information is generated by the base station according to a division manner of a base sequence group in the communication system where the base station is located, and the division manner divides the base sequence group in the communication system into a plurality of base sequence sets, each The base sequence set includes at least one base sequence group, and the at least one base sequence set in the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence group belongs to the first base sequence set One of the base sequence sets.

It should be understood that, in the embodiment of the present application, the number of multiple-input multiple-output (MIMO) streams that the first base sequence set to which the first base sequence group of the user equipment belongs can be no less than the service of the user equipment. The number of MIMO streams that the cell needs to support.

Optionally, the dividing manner is that the network side device that manages the base station is notified to the base station after dividing the base sequence group. It should be understood that, in this embodiment of the present application, the network side device may be a centralized base station in a centralized base station communication system, or a base station controller, or a Radio Network Controller (RNC), and the like. After dividing the base sequence group in the communication system, the network side device may notify the base station under the jurisdiction of the network side device by broadcasting or other predefined manner.

For example, the network side device divides one of the 30 base sequence groups of LTE into: {0, 1}; {2, 3}; {4, 5}; {6, 7, 8}; {9, 10 , 11}; {12,13,14};{15,16,17};{18,19,20,21};{22,23,24,25};{26,27,28,29}, The number in the set is the group number of the base sequence group of LTE. The network side device may number these sets to form a base sequence set table: 0: {0, 1}; 1: {2, 3}; 2: {4, 5}; 3: {6, 7, 8 };4:{9,10,11};5:{12,13,14};6:{15,16,17};7:{18,19,20,21};8:{22,23 , 24, 25}; 9: {26, 27, 28, 29}, and broadcast the base sequence set table to each base station under the jurisdiction of the network side device.

Alternatively, the division manner may be pre-agreed. Specifically, the division manner may be specified by a protocol, or pre-agreed by a base station and a user equipment. For example, the protocol may stipulate that the base sequence group in the communication system is divided into two base sequence groups according to each base sequence, or The base sequence is divided into three base sequence groups for division, or four base sequence groups are grouped for each base sequence, and so on. One value of the number of base sequence groups included in each base sequence set corresponds to a division mode.

202. The user equipment determines the first base sequence group according to the configuration information.

203. The user equipment generates a reference signal according to the first base sequence group, and sends the reference signal to the base station.

In addition, in the embodiment of the present application, by allocating more base sequence groups in each cell, it is also possible to support the UE to adopt different base sequence groups in different frequency bands in the same time slot under large bandwidth conditions, thereby reducing peak average power. Peak to Average Power Ratio (PAPR).

Optionally, as an embodiment, the first base sequence set is a base sequence set allocated by the base station to the serving cell to which the user equipment belongs, and the dividing manner is a base sequence of the network side device that manages the base station to the communication system. a partitioning manner of the group, the configuration information includes a set number and a serial number within the set, the set number is used to indicate a number of the first base sequence set, and the serial number in the set is used to indicate that the first base sequence group is at the first The sequence number in the base sequence set is as follows: Step 202 is specifically implemented by: the user equipment determining the first base sequence group according to the set number and the sequence number in the set.

It should be understood that, in the embodiment of the present application, after the network side device divides the base sequence group of the communication system into a plurality of base sequence sets and notifies the base station, the base station may allocate a base sequence for each cell managed by the base station. A set, each cell corresponds to a set of base sequences. At this time, the maximum number of MIMO streams that each base sequence set can support is not less than the number of MIMO streams that the cell corresponding to the base sequence set needs to support.

For example, if the number of MIMO streams that the cell needs to support is 16, the number of MIMO streams that the corresponding base sequence set of the cell can support should be no less than 16.

Optionally, in another embodiment, the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a total number of sets and a sequence number within the set, and the sequence number in the set a sequence number indicating the first base sequence group in the first base sequence set, and each base sequence set of the plurality of base sequence sets divided according to the division manner includes the same number of base sequence groups, and the number of base sequence groups is equal to The total number of sets of multiple base sequences is equal to the total number of sets; step 202 Specifically, the user equipment determines, according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the total number of the set; the user equipment according to the The first set of base sequences and the sequence number within the set determine the first set of base sequences.

It should be understood that, in the embodiment of the present application, the number of MIMO streams that a base sequence set can support is not less than the number of MIMO streams that the serving cell of the user equipment needs to support. Further, in step 202, the user equipment determines, according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the total number of the set, the first base sequence set is represented by the following formula:

i=(f _ch (n _s )+f _cs )mod M,

The value of the set shift mode f _cs can be referred to the value of the sequence shift mode in the prior art. For example, for PUSCH, if the upper layer is not configured

Or the PUSCH transmission is for the random access authorization, or the PUSCH is the TB retransmission in the contention of the random access, and may be configured according to the cell ID of the serving cell to which the user equipment belongs and the high layer signaling of the serving cell to which the user equipment belongs. The parameter and the total number of the sets M to determine the set shift mode of the PUSCH, the set shift mode of the PUSCH

Where Δ _cs ∈{0,1,...,M-1} is configured by higher layer signaling,

Indicates a cell ID of the serving cell of the user equipment; otherwise, the set shift mode of the PUSCH and the set shift mode of the PUSCH may be determined according to parameters configured by the high layer signaling of the serving cell to which the user equipment belongs and the total number M of the set.

among them

Configured by high-level signaling, refer to 5.5.1.5 of LTE36.211. Alternatively, for the SRS, the set shift mode of the SRS and the set shift mode of the SRS may be determined according to parameters of the high layer signaling configuration of the serving cell to which the user equipment belongs and the total number M of the set.

among them

Configured by high-level signaling, refer to 5.5.1.5 of LTE36.211.

Or alternatively, as another embodiment, the first base sequence set is the user equipment Sending a base sequence set corresponding to a current time slot of the reference signal, where the configuration information includes a set of base sequence groups and a sequence number within the set, where the sequence number is used to indicate that the first base sequence group is in the first base sequence set a sequence number, the number of base sequence groups included in each base sequence set of the plurality of base sequence sets divided according to the division manner is equal to the number of base sequence groups in the set; step 202 is specifically implemented as: the user equipment is according to the user The set shift mode of the device, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the number of base sequence groups in the set determine the first base sequence set; the user equipment according to the first base sequence set and the The sequence number within the set determines the first base sequence group. Similarly, in the embodiment of the present application, the number of MIMO streams that a base sequence set can support is not less than the number of MIMO streams that need to be supported in the serving cell of the user equipment.

Further, in step 202, the user equipment determines, according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the number of base sequence groups in the set to determine the first base sequence set. The following formula indicates:

i=(f _ch (n _s )+f _cs )mod(floor(M ₀ /g)),

Similar to the scheme in which the configuration information includes the total number of sets and the sequence number in the set. For the PUSCH, if the upper layer is not configured.

Or the PUSCH transmission is for the random access authorization, or the PUSCH is the TB retransmission in the contention of the random access, and may be configured according to the cell ID of the serving cell to which the user equipment belongs and the high layer signaling of the serving cell to which the user equipment belongs. The parameter and the number of base sequence groups g in the set determine the set shift mode of the PUSCH. Taking LTE as an example, the value of M ₀ is 30, and the PUSCH set shift mode

Where Δ _cs ∈ {0,1,...,(floor(30/g))-1}, configured by higher layer signaling,

Indicates a cell ID of the serving cell of the user equipment; otherwise, the set shift mode of the PUSCH, the set of the PUSCH may be determined according to the parameter of the high layer signaling configuration of the serving cell to which the user equipment belongs and the number of base sequence groups g in the set. Shift mode

among them

Configured by high-level signaling, refer to 5.5.1.5 of LTE36.211. Alternatively, for the SRS, the set shift mode of the SRS and the set shift mode of the SRS may be determined according to parameters of the high layer signaling configuration of the serving cell to which the user equipment belongs and the number of base sequence groups g in the set.

among them

Configured by high-level signaling, refer to 5.5.1.5 of LTE36.211.

After the user equipment determines the base sequence group according to the manner of the above embodiment, the sequence hop can also be determined by referring to the prior art method.

An algorithm for determining sequence hopping is as follows:

When the sequence hops, all base sequence groups of one cell hop at the same time. Since a cell has multiple base sequence groups, when supporting sequence hopping, multiple base sequence groups use the same mode to hop. only at

When there is a sequence jump. when

When, v=0. when

When there is

The value of the pseudo-random sequence c(n _s ) can be referred to 7.2 of LTE 36.211. For the PUSCH, the initial value of the pseudo-random sequence may be determined by the cell ID of the serving cell to which the user equipment belongs, the parameter configured by the higher layer signaling of the serving cell to which the user equipment belongs, and the total number M of the set, the initial value of the pseudo-random sequence.

Where Δ _cs ∈{0,1,...,M-1} is configured by higher layer signaling,

a cell ID indicating a serving cell of the user equipment,

For high-level signaling configuration, refer to 5.5.1.5 of LTE 36.211. For SRS, the initial value of the pseudo-random sequence can be determined by the parameters configured by the high-level signaling of the serving cell to which the user equipment belongs and the total number M of the set, pseudo-random. Sequence initial value

among them

Configured by higher layer signaling, refer to 5.5.1.5 of LTE 36.211, Δ _cs ∈ {0, 1, ..., M-1} is configured by higher layer signaling. Of course, if the number of base sequence groups g in the set is included in the configuration parameter, the total number M of the above sets may be replaced by floor (30/g).

Then, according to the sequence hop, the UE may select the base sequence corresponding to the sequence hop in the base sequence group corresponding to the current time slot, and generate a reference signal based on the base sequence, and send the reference signal to the base station.

A specific implementation of obtaining a reference signal from a base sequence can be referred to the prior art. For ease of understanding, one way to generate a reference signal is as follows:

among them,

Indicates the length of the reference signal sequence, where m is the number of RBs occupied by the frequency domain of the cell,

Indicates the maximum number of RBs for uplink transmission. Reference sequence

Obtained after the cyclic shift.

Optionally, the configuration information is sent by using Radio Resource Control (RRC) signaling and/or Downlink Control Information (DCI). For example, the configuration information includes a set number and an intra-sequence number. The base station may send the set number and the intra-sequence number through RRC signaling, or the base station may send the set number through RRC signaling, and send the sequence number through the DCI, or The collection number and the serial number within the collection are sent through the DCI, and the like. Of course, it should be understood that the possibility of using other signaling is not excluded.

301. The base station sends configuration information to the UE.

In the embodiment of the present application, the base station and the UE may pre-arrange that the base sequence component of the communication system is configured into a plurality of base sequence sets, and each base sequence set includes the same number of base sequence groups. The number of base sequence groups included in each base sequence set has many values, for example, 2, 3, 4, etc., and each value corresponds to a division manner of the base sequence group. Of course, it should be understood that the number of base sequence groups included in each base sequence set does not take a value of 1, because if the value is 1, it is equivalent to the prior art packet.

When transmitting the configuration information to the UE, the base station needs to select an appropriate division manner according to the number of MIMO streams that the serving cell needs to support, and send configuration information to the UE according to the division manner, where the configuration information is used to indicate that the base station is the UE. The assigned base sequence group.

FIG. 4 is a schematic diagram of a base sequence group division according to an embodiment of the present application. The division mode corresponds to 8-stream MIMO (2 base sequence groups per base sequence set) and 12-stream MIMO (each base sequence set) 3 base sequence groups), and 16-stream MIMO (4 base sequence groups per base sequence set). The specific division result is shown in Table 1, where i denotes the divided set number, j denotes the serial number of the divided base sequence group in the set, and u denotes the base sequence group number before division.

Table 1, base sequence group division table

i＝0～29i=0～29	j＝0,1j=0,1	j＝0,1,2j=0,1,2	j＝0,1,2,3j=0,1,2,3
00	u＝0,1u=0,1	u＝0,1,2u=0,1,2	u＝0,1,2,3u=0,1,2,3
11	u＝2,3u=2,3	u＝3,4,5u=3,4,5	u＝4,5,6,7u=4,5,6,7
22	u＝4,5u=4,5	u＝6,7,8u=6,7,8	u＝8,9,10,11u=8,9,10,11
33	u＝6,7u=6,7	u＝9,10,11u=9,10,11	u＝12,13,14,15u=12,13,14,15
44	u＝8,9u=8,9	u＝12,13,14u=12,13,14	u＝16,17,18,19u=16,17,18,19
55	u＝10,11u=10,11	u＝15,16,17u=15,16,17	u＝20,21,22,23u=20,21,22,23
66	u＝12,13u=12,13	u＝18,19,20u=18,19,20	u＝24,25,26,27u=24,25,26,27
77	u＝14,15u=14,15	u＝21,22,23u=21,22,23	NANA
88	u＝16,17u=16,17	u＝24,25,26u=24,25,26	NANA
99	u＝18,19u=18,19	u＝27,28,29u=27,28,29	NANA
1010	u＝20,21u=20,21	NANA	NANA
1111	u＝22,23u=22,23	NANA	NANA
1212	u＝24,25u=24,25	NANA	NANA
1313	u＝26,27u=26,27	NANA	NANA
1414	u＝28,29u=28,29	NANA	NANA

In the embodiment of the present application, if the number of base sequence groups of the communication system is M ₀ , the number of MIMO streams that the serving cell in which the UE is located needs to be S, and the number of MIMO streams that each base sequence group can support is Q, corresponding to Each base sequence set in the partitioning method needs to contain g base sequence groups, which can be divided into M base sequence sets, then g and M can be expressed by the following formula:

g=ceil(S/Q); M=floor(M ₀ /g).

Take the 30 base sequence groups of LTE as an example.

For example, if the number of MIMO streams that the serving cell in the UE needs to support is 8, and the number of MIMO streams Q that each base sequence group can support is 4, each base sequence set in the corresponding partitioning mode needs to include ceil (8/4). ) = 2 base sequence groups, which can be divided into floor(30/2)=15 base sequence sets.

For another example, if the number of MIMO streams that the serving cell in the UE needs to support is 12, and the number of MIMO streams Q that each base sequence group can support is 4, each base sequence set in the corresponding partitioning mode needs to include ceil (12/). 4) = 3 base sequence groups, which can be divided into floor(30/3)=10 base sequence sets.

For example, if the number of MIMO streams that the serving cell in the UE needs to support is 16, and the number of MIMO streams Q that each base sequence group can support is 4, each base sequence set in the corresponding partitioning mode needs to include ceil (16/). 4) = 4 base sequence groups, which can be divided into floor(30/4)=7 base sequence sets.

A specific implementation manner, the configuration information sent by the base station to the UE may include a total number of sets and a serial number within the set. The total number of sets indicates the total number of base sequence sets divided in the partition mode, and can be used to notify the UE of the base sequence group. The sequence number is used to indicate the sequence number of the base sequence group allocated to the UE in the associated base sequence set. .

Corresponding to 8-stream MIMO, the intra-set sequence number is 0 or 1; corresponding to 12-stream MIMO, the intra-set sequence number is 0, 1, or 2; corresponding to 16-stream MIMO, the intra-set sequence number is 0, 1, 2, or 3.

For example, the base station may send configuration information (7, 3), wherein the total number of sets is 7, and the sequence number in the set is 3, indicating that the base sequence is divided into 7 base sequence sets, and each base sequence set is 4 base sequence groups, and is allocated to the UE. The sequence number of the base sequence group in the associated base sequence set is 3, that is, the base sequence group that the UE may use is (3, 7, 11, 15, 19, 23, 27).

The base station can simultaneously transmit the total number of sets and the serial numbers in the set, or send them separately. For example, the base station may send the total number of sets and the serial number in the set to the UE through RRC signaling; or, the base station may send the total number of sets to the UE through RRC signaling, send the serial number in the set to the UE through the DCI, and the like.

In another specific implementation manner, the configuration information sent by the base station to the UE may include the number of the inner base sequence group and the inner serial number in the set. The number of the set of base sequence groups in the set indicates the number of base sequence groups included in each base sequence set divided by the partition mode, and can be used to notify the UE to divide the base sequence group; the sequence number in the set is used to indicate the allocation to the UE. The sequence number of the base sequence group in the set of base sequences to which it belongs.

For example, the base station may send configuration information (4, 3), wherein the number of base sequence groups in the set is 4, and the sequence number in the set is 3, indicating that the base sequence group is divided into 4 base sequence groups for each base sequence, and is divided into 7 bases. The sequence set, the base sequence group assigned to the UE has a sequence number of 3 in the associated base sequence set, and so on.

Similarly, the base station can simultaneously transmit the number of base sequence groups in the set and the sequence numbers in the set, or send them separately. For example, the base station may send the number of the intra-base sequence group and the intra-sequence number to the UE through the RRC signaling; or the base station may send the number of the intra-base sequence group to the UE through the RRC signaling, and send the intra-sequence number to the UE through the DCI, etc. Wait.

302. The UE determines a base sequence group of the UE.

The UE can determine the base sequence group used by the UE based on the configuration information sent by the base station.

If the configuration information sent by the base station is the total number of the set and the sequence number in the set, the UE determines the base sequence set corresponding to the current time slot according to the set shift mode of the UE, the set hop corresponding to the current time slot of the UE transmitting the reference signal, and the total number of the set. And determining, according to the base sequence set corresponding to the current time slot and the sequence number in the set, the base sequence group corresponding to the current time slot. Specifically, the UE may determine a base sequence set corresponding to the current time slot according to the following formula:

i=(f _ch (n _s )+f _cs )mod M,

Where i denotes the set number of the first base sequence set in the plurality of base sequence sets, M denotes the total number of sets, n _s denotes the current time slot, and f _cs denotes a set shift mode of the UE, by the UE The cell ID of the serving cell to which the UE belongs, the parameter of the high layer signaling configuration of the serving cell to which the UE belongs, and the total number M of the set are determined, or the parameters of the high layer signaling configuration of the serving cell to which the UE belongs and the total number M of the set are determined. , f _ch (n _s ) indicates the set hop corresponding to the current time slot n _s , and the value is 0 when the set hop is off, and is the value when the set hop is enabled.

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , and the initialization value of each frame is configured by the cell identity ID of the serving cell to which the UE belongs and the higher layer signaling of the serving cell to which the UE belongs. The parameter and the total number M of the sets are determined or determined by the parameters of the high layer signaling configuration of the serving cell to which the UE belongs and the total number M of the sets.

Or, if the configuration information sent by the base station is the number of base sequence groups in the set and the sequence number in the set, the UE according to the set shift mode of the UE, the set hop corresponding to the current time slot in which the UE transmits the reference signal, and the base sequence group in the set The number determines a base sequence set corresponding to the current time slot, and then determines a base sequence group corresponding to the current time slot according to the base sequence set corresponding to the current time slot and the sequence number in the set. Specifically, the UE may determine a base sequence set corresponding to the current time slot according to the following formula:

i=(f _ch (n _s )+f _cs )mod(floor(M ₀ /g)),

Where i denotes the set number of the first base sequence set in the plurality of base sequence sets, g denotes the number of base sequence groups in the set, n _s denotes the current time slot, and M ₀ denotes a communication system in which the base station is located The number of base sequence groups, f _cs represents the set shift mode of the UE, the cell identifier ID of the serving cell to which the UE belongs, the parameters of the high layer signaling configuration of the serving cell to which the UE belongs, and the base sequence of the set The group number g is determined, or is determined by the parameter of the high layer signaling configuration of the serving cell to which the UE belongs and the number of base sequence groups g in the set, and f _ch (n _s ) represents the set hop corresponding to the current time slot n _s when When the set hop is off, the value is 0. When the set hop is enabled, the value is

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , and the initialization value of each frame is configured by the cell identity ID of the serving cell to which the UE belongs and the higher layer signaling of the serving cell to which the UE belongs. The parameter and the number of base sequence groups g in the set are determined or determined by the parameters of the high layer signaling configuration of the serving cell to which the UE belongs and the number of base sequence groups g in the set.

In the embodiment of the present application, the definition of the pseudo-random sequence and the method for obtaining the initial value, the set shift mode, and the like may be referred to the embodiment shown in FIG. 2, and details are not described herein again.

After determining the set number, the UE may determine the base sequence group corresponding to the current time slot according to the set number and the sequence number in the set. Specifically, after determining, by the foregoing manner, the base sequence set corresponding to the current time slot, the UE may determine, in the base sequence set of the current time slot, that the base sequence group corresponding to the sequence number in the set is the base sequence group corresponding to the current time slot.

For example, if the configuration information sent by the base station is (7, 3), and the UE determines that the set number of the base sequence set of the current time slot is 2 (ie, the base sequence set {8, 9, 10, 11}), the UE may further determine the current The group number of the base sequence group corresponding to the time slot is 10.

303. The UE generates a reference signal according to the base sequence group.

A specific implementation of the UE generating a reference signal according to a base sequence group may refer to the prior art. For ease of understanding, a way to generate a reference signal based on a base sequence group is described below.

First, the UE may determine a sequence hop of the base sequence corresponding to the current time slot according to the length of the reference signal sequence.

When the sequence hops, all base sequence groups of one cell hop at the same time. The base sequence sets corresponding to the cells may be different in different time slots. However, there are multiple base sequence groups in the base sequence set corresponding to each cell, and when the sequence jump is supported, the multiple base sequence groups use the same mode to jump. only at

When there is a sequence jump. when

When, v=0. when

When there is

Where Δ _cs ∈{0,1,...,M-1} is configured by higher layer signaling,

a cell ID indicating a serving cell of the user equipment,

among them

Configured by higher layer signaling, refer to 5.5.1.5 of LTE 36.211, Δ _cs ∈ {0, 1, ..., M-1} is configured by higher layer signaling. Then, the UE may determine the base sequence corresponding to the current time slot in the determined base sequence group according to the sequence hop.

In the LTE protocol, a ZC sequence is used to generate an uplink reference signal, including a DRS of a PUSCH, a DRS of a PUCCH, and an SRS. The ZC sequence is cyclically shifted to generate an orthogonal reference signal. Assuming that the root sequence corresponding to the base sequence is a ZC sequence, the base sequence index q of the root sequence of the ZC sequence can be expressed by the following formula:

Wherein, u=(i-1)*S+t, t represents the sequence number in the set of the base sequence to which the base sequence group to which the base sequence corresponding to the current time slot belongs, and S represents that each base sequence set includes Number of base sequence groups,

Indicates the length of the ZC sequence to satisfy

The largest prime number,

Indicates the length of the base sequence.

It should be understood that the number of base sequence indices is affected by the sequence length.

Constraint, that is, the number is not more than

The number of prime numbers, therefore, choose

When it is prime, you can get the maximum number of base sequence indexes, and the base sequence will have

Base sequence index. E.g,

A value of 7, there will be {1, 2, 3, 4, 5, 6} 6 values and 7 as a prime number, which can be used as an index of the base sequence.

The expression x _q (m) of the z-order ZC sequence satisfies the following formula:

Base sequence of the current slot n _s

It can be expressed by the following formula:

among them,

Look up the table function for the reference signal sequence,

The values can be referred to Tables 5.5.1.2-1 and 5.5.1.2-2 of LTE 36.211.

Indicates the length of the ZC sequence used by the reference signal, which is less than

The largest prime number.

A method for generating a reference signal based on a base sequence is as follows:

among them,

Indicates the maximum number of RBs for uplink transmission. Reference sequence

Obtained after the cyclic shift.

304. The UE sends a reference signal to the base station.

After the UE generates the reference signal, the reference signal can be sent to the base station.

So far, the base station and the UE implement the entire flow of the UE transmitting the uplink reference signal.

In the embodiment of the present application, the base station sends configuration information to the UE according to a predetermined division manner of a basic sequence group, so that more base sequence groups are allocated in each cell to support MIMO of more streams, thereby being able to support the cell. Different UEs use different base sequence groups to increase uplink capacity and improve spectrum efficiency.

In addition, in the embodiment of the present application, by allocating more base sequence groups in each cell, it is also possible to support UEs in the cell to adopt different base sequence groups in different frequency bands in the same time slot under large bandwidth conditions, thereby reducing PAPR. . For example, in the PUCCH channel, if the high and low frequency parts of the PUCCH channel are mapped in the same time slot, at this time, different base sequence groups can be employed at high and low frequencies to avoid higher PAPR. For another example, in the PUSCH channel, when the system uses a molecular band to implement large-bandwidth transmission, different base sequence groups are used by different sub-bands, PAPR can also be reduced, and the like.

FIG. 5 is an interaction flowchart of the transmission of the reference signal sequence in the embodiment of the present application. In the embodiment of the present application, the network side device that administers the base station is a base station controller. Of course, it should be understood that the base station controller in the embodiment of the present application may also be replaced with a device such as a centralized base station or an RNC, and the like, which is not limited herein.

501. The base station controller groups all base sequence components into a plurality of base sequence sets.

Taking LTE as an example, in the embodiment of the present application, the base station controller may divide the 30 base sequence groups of the LTE into multiple base sequence sets, each base sequence set includes at least one base sequence group, and the multiple base sequences At least one set of base sequences in the set comprises at least 2 sets of base sequences.

It should be understood that the number of base sequence groups included in each base sequence set in the plurality of base sequence sets may be the same or different. In the embodiment of the present application, the number of base sequence groups included in each base sequence set in the plurality of base sequence sets is different, that is, the number of base sequence groups in the plurality of base sequence sets is different, instead of It is said that the number of base sequences of any two base sequence sets is different.

Optionally, the division of the base sequence group is pre-agreed (eg, as specified by the protocol) or determined by the base station controller.

For convenience of description, it may be assumed that a specific example of the base sequence set of the base station controller is as follows: {0, 1}; {2, 3}; {4, 5}; {6, 7, 8}; 9,10,11};{12,13,14};{15,16,17};{18,19,20,21};{22,23,24,25};{26,27,28, 29}. The sequence number in the set is used to indicate the sequence number of the base sequence group in the 30 group base sequence group of LTE.

502. The base station controller broadcasts a base sequence group division result to the base station.

After the base station controller completes the division of the base sequence group, the division result broadcast can be broadcasted to the base station. The base station under the controller.

The base station controller can broadcast the partitioning result in a variety of ways.

For example, the base station controller may use a base sequence set table to represent the result of the base sequence group partitioning, and then broadcast the base sequence set table to the base station under the jurisdiction. The base sequence set table may include a correspondence between a set number of the base sequence set and a base sequence set, and a base sequence group included in each base sequence set. Taking the base sequence set table of step 501 as an example, the base station controller may number the base sequence set to form a base sequence set table: 0: {0, 1}; 1: {2, 3}; 2: {4 , 5}; 3: {6,7,8}; 4:{9,10,11};5:{12,13,14};6:{15,16,17};7:{18,19 , 20, 21}; 8: {22, 23, 24, 25}; 9: {26, 27, 28, 29}, and broadcast the base sequence set table.

For another example, the base station controller may broadcast the algorithm of the base sequence group division to the base station under the jurisdiction, the base station derives the result of the base sequence group division according to the algorithm, and the like.

Of course, there may be other implementations, and the embodiments of the present application are not limited herein.

503. The base station allocates a base sequence set.

After receiving the division result sent by the base station controller that is in charge of the base station, the base station may allocate an appropriate base sequence set to each cell according to the number of MIMO streams that each cell that the base station is required to support, so that each cell corresponds to The maximum number of MIMO streams that the base sequence set can support is not less than the number of MIMO streams that the corresponding cell needs to support.

For example, if the base station jurisdictions the cell A, the cell B, and the cell C, and the number of MIMO streams to be supported is 7, 12, and 15, respectively, the base sequence group required for the base sequence set of the cell A, the cell B, and the cell C is required. The numbers are Ceil (7/4), Ceil (12/4), and Ceil (15/4), that is, 2, 3, and 4 base sequence group sets are required respectively.

504. The base station sends configuration information to the UE.

The base station may send configuration information to the UE to indicate the base sequence group allocated by the base station to the user equipment. In the embodiment of the present application, the configuration information sent by the base station to the UE may include a set number and a serial number within the set. The set number is used to indicate a base sequence set allocated by the base station to the serving cell where the UE is located, and the sequence sequence number is used to indicate a base sequence group allocated to the UE in the base sequence set.

For example, the base station allocates the base sequence group with the sequence number 19 in the LTE to the UE, and takes the base sequence set table shown in step 502 as an example. The configuration information sent by the base station is (7, 2), that is, the set number is 7, within the set. The serial number is 2.

505. The UE determines a base sequence group of the UE.

The UE can determine the base sequence group allocated to the UE according to the set number and the sequence number within the set.

For example, the UE learns that the set number is 7 from the configuration information, and the sequence number is 2 in the set, and the base sequence group, that is, the base sequence group with the group number 19 in the 30 base sequence groups of the LTE, can be obtained.

506. The UE generates a reference signal according to the base sequence group.

In the embodiment of the present application, since the number of base sequence groups of the base sequence set corresponding to each cell is not completely equal, there is no set hop.

When the sequence hops, all base sequence groups of one cell hop at the same time. only at

When there is a sequence jump. when

When, v=0. when

When v=c(n _s ), the sequence hop v and the current time slot n _s can be expressed by the following formula:

Where Δ _cs ∈{0,1,...,M-1} is configured by higher layer signaling,

a cell ID indicating a serving cell of the user equipment,

among them

Configured by higher layer signaling, refer to 5.5.1.5 of LTE 36.211, Δ _cs ∈ {0, 1, ..., M-1} is configured by higher layer signaling.

The UE may determine the base sequence corresponding to the time slot according to the determined root sequence group and the sequence hop, and then generate a reference signal according to the determined base sequence. For the specific implementation, refer to the related content in step 304, where the embodiment of the present application is No longer.

For the specific implementation of step 506, reference may be made to step 303 of FIG. 3, and details are not described herein again.

507. The UE sends a reference signal to the base station.

In the embodiment of the present application, the base station sends configuration information to the UE according to a division manner of a base sequence group of the base station controller that is in charge of the base station, so that more base sequence groups are allocated in each cell, and the maximum number of streams can be supported at most. The MIMO can support different UEs in the cell to adopt different base sequence groups, increase uplink capacity, and improve spectrum efficiency.

FIG. 6 is a schematic diagram of another transmission method of a reference signal sequence in an embodiment of the present application. The method of Figure 6 is performed by a base station.

601. The base station sends configuration information to the user equipment, where the configuration information is used to indicate the first base sequence group allocated by the base station to the user equipment.

The configuration information is generated by the base station according to a division manner of a base sequence group in the communication system where the base station is located, where the division manner divides the base sequence group in the communication system where the base station is located into multiple base sequence sets. Each base sequence set includes at least one base sequence group, and at least one base sequence set of the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence group to which the first base sequence group belongs is One of the plurality of base sequence sets.

602. The base station receives a reference signal generated by the user equipment according to the first base sequence group.

In the embodiment of the present application, after the base station sends the configuration information to the user equipment based on the divided base sequence set, the user equipment determines, according to the base sequence group indicated by the configuration information, a base sequence group used for transmitting the reference signal, so that each base station Allocating more base sequence groups to support more stream MIMO, so that different UEs in the cell can adopt different base sequence groups, increase uplink capacity, improve spectrum efficiency, or can support UEs in different time slots. The frequency bands use different base sequence groups to reduce PAPR under large bandwidth conditions.

Optionally, as an embodiment, the first base sequence set is a base sequence set allocated by the base station to the serving cell to which the user equipment belongs, and the division manner is a base sequence of the network side device that manages the base station to the communication system. A division manner of the group, the configuration information includes a collection number and a serial number within the set, the collection number is used to represent the number of the first base sequence set, and the serial number in the set is used for the table The sequence number of the first base sequence group in the first base sequence set is shown, and the set number and the sequence number are used by the user equipment to determine the first base sequence group according to the set number and the set internal sequence number.

It should be understood that, in this embodiment of the present application, the base station may allocate a base sequence set for each cell that is controlled by the base station, and each cell corresponds to a base sequence set. At this time, the maximum number of MIMO streams that each base sequence set can support is not less than the number of MIMO streams that the cell corresponding to the base sequence set needs to support.

Or alternatively, as another embodiment, the first base sequence set is a base sequence set corresponding to a current time slot of the user equipment that sends the reference signal, where the configuration information includes a total number of sets and a sequence number within the set, and the set The internal sequence number is used to indicate the sequence number of the first base sequence group in the first base sequence set, and each base sequence set of the plurality of base sequence sets divided according to the division manner includes the same number of base sequence groups. And the total number of the plurality of base sequence sets is equal to the total number of the set, the total number of the set and the sequence number in the set are used by the user equipment according to the set shift mode of the user equipment, and the current time slot of the user equipment is sending the reference signal. The corresponding set hop and the total number of the sets determine the first base sequence group.

It should be understood that, in the embodiment of the present application, the number of MIMO streams that a base sequence set can support is not less than the number of MIMO streams that the serving cell of the user equipment needs to support.

Or, optionally, as a further embodiment, the first base sequence set is a base sequence set corresponding to a current time slot of the user equipment that sends the reference signal, where the configuration information includes the number of base sequence groups in the set and the set a sequence number, the sequence number in the set is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each base sequence set of the plurality of base sequence sets divided according to the division manner includes a base sequence group The number is equal to the number of base sequence groups in the set, and the number of base sequence groups in the set and the sequence number in the set are used by the user equipment according to the set shift mode of the user equipment, and the current time slot of the user equipment that sends the reference signal. The set of base hops and the number of base sequence groups in the set determine the first set of base sequences.

Optionally, the configuration information is sent through RRC signaling or DCI. For example, the configuration information includes a set number and an intra-sequence number. The base station may send the set number and the intra-sequence number through RRC signaling, or the base station may send the set number through RRC signaling, and send the sequence number through the DCI, or The collection number and the serial number within the collection are sent through the DCI, and the like. Of course, it should be understood that the possibility of using other signaling is not excluded. The specific implementation of the embodiment of the present application can refer to the figure. The embodiment shown in FIG. 3 and the method performed by the base station in the embodiment shown in FIG. 5 are not described herein again.

FIG. 7 is a schematic diagram of still another transmission method of a reference signal sequence in the embodiment of the present application. The method of Figure 7 is performed by a network side device.

701. The network side device divides the base sequence group of the communication system into multiple base sequence sets according to a division manner, and each base sequence set includes a base sequence group number of not less than one, and the multiple bases At least one of the set of base sequences in the set of sequences comprises at least two sets of base sequences.

702. The network side device sends the division result of the division mode to the base station that is controlled by the network side device, so that the base station sends configuration information to the user equipment according to the division manner, so that the user equipment is based on the base indicated by the configuration information. The sequence group sends a reference signal.

In the embodiment of the present application, the network side device re-divides the base sequence group into multiple base sequence sets, so that more base sequence groups are allocated in each cell, so that different UEs in the cell can support different base sequence groups. Increase uplink capacity and improve spectrum efficiency.

In addition, in the embodiment of the present application, by allocating more base sequence groups in each cell, it is also possible to support UEs in the cell to adopt different base sequence groups in different frequency bands in the same time slot under large bandwidth conditions, thereby reducing PAPR. .

For a specific implementation of the embodiment of the present application, reference may be made to the method performed by the base station controller in the embodiment shown in FIG. 5, which is not repeatedly described herein.

FIG. 8 is a schematic diagram of still another transmission method of a reference signal sequence in the embodiment of the present application. The method of Figure 8 is performed by a user equipment.

801. The user equipment receives the configuration information sent by the base station, where the configuration information is used to indicate the first base sequence that the base station allocates for the user equipment.

Each base sequence group of the serving cell allocated to the user equipment is expanded into a base sequence group including g base sequences, g is not less than ceil (S/Q), and Q is a MIMO stream supported by a base sequence. The maximum value of the number, S is the number of MIMO streams that the serving cell of the user equipment needs to support, S>Q, and the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system. The number of RBs of the uplink bandwidth of the user equipment is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), Z For the smallest prime number greater than or equal to M ₀ *g+1, M ₀ represents the number of base sequence groups in the communication system in which the base station is located. Taking LTE as an example, the value of Q may be a divisor of 12, that is, 1, 2, 3, 4, 6, and 12, and the value of M ₀ is 30.

It should be understood that, in this embodiment of the present application, the base station may be configured according to the number of MIMO streams that the cell needs to support. A base sequence group containing different base sequence numbers is configured for different cells. For example, the cells A, B, and C under the control of the base station need to support 8-stream MIMO, 12-stream MIMO, and 16-stream MIMO, respectively, and the base sequence groups allocated by the base station for the cells A, B, and C are respectively expanded to include 2 and 3 , a base sequence group of 4 base sequences, and the like.

Optionally, the configuration information is sent through RRC signaling or DCI. Of course, it should be understood that the possibility of using other signaling is not excluded.

802. The user equipment determines the first base sequence according to the configuration information.

803. The user equipment generates a reference signal according to the first base sequence, and sends the reference signal to the base station.

In the embodiment of the present application, after the uplink bandwidth of the user equipment is greater than a predetermined threshold, after receiving the configuration information sent by the base station based on the extended base sequence group, the user equipment determines, according to the configuration information, a base sequence used by the user equipment to send the reference signal. Therefore, more base sequences are allocated in each cell to support MIMO of more streams, so that different UEs in the cell can support different base sequences, increase uplink capacity, and improve spectrum efficiency.

In addition, in the embodiment of the present application, by allocating more base sequences in each cell, it is also possible to support UEs in the cell to adopt different base sequences in different frequency bands in the same time slot, thereby reducing PAPR.

Optionally, the first base sequence group is a base sequence group corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a group sequence number, where the sequence number is used to indicate that the first base sequence is The sequence number in the first base sequence group is determined by: the user equipment determining the first base sequence group according to the sequence shift mode of the user equipment, and the group hop corresponding to the user equipment in the current time slot; The user equipment determines the first base sequence in the first base sequence group according to the intra-group sequence number.

Further, in step 802, the user equipment determines that the first base sequence group is represented by the following formula according to the sequence shift mode of the user equipment and the group hop corresponding to the current time slot of the user equipment:

u=(f _gh (n _s )+f _ss )mod M ₀ ,

Where u denotes the group number of the first base sequence group, n _s denotes the current time slot, f _ss denotes the sequence shift mode of the UE, the cell identity ID of the serving cell to which the UE belongs, and the service to which the UE belongs The parameter of the high-level signaling configuration of the cell is determined, or is determined by the parameter of the high-level signaling configuration of the serving cell to which the UE belongs, and f _gh (n _s ) represents the group hop corresponding to the current time slot n _{s of the} transmitting reference signal, when the group The value is 0 when the hop is off, and is the value when the hop is enabled.

c(n _s ) represents the value of the pseudo-random sequence in the current time slot n _s , and the initialization value of each frame is configured by the cell ID of the serving cell to which the UE belongs and the high-level signaling configuration parameter of the serving cell to which the UE belongs. Determined, or determined by parameters of a higher layer signaling configuration of a serving cell to which the UE belongs.

Hereinafter, the method of the embodiment of the present application will be further described in conjunction with specific embodiments.

FIG. 9 is an interaction flowchart of reference signal sequence transmission in the embodiment of the present application.

901. The base station sends configuration information to the UE.

In the embodiment of the present application, the base station and the UE may pre-arrange that when the number of resource blocks RB of the uplink bandwidth of the UE is greater than or equal to a predetermined threshold L, the base sequence group of the communication system in which the UE is located is extended, so that each base after the extension is extended. The maximum number of MIMO streams that the sequence group can support is not less than the number of MIMO streams that the serving cell of the UE needs to support.

It may be assumed that the number of MIMO streams that the serving cell of the UE needs to support is S, and Q is the maximum value of the number of MIMO streams that can be supported by one base sequence, and then the number of base sequences included in each base sequence group after expansion is not less than ceil ( S/Q), that is, the minimum value of g is ceil(S/Q), L satisfies the following condition: L is a multiple of 2, 3 or 5, and L is an integer not less than ceil((Z)/12) Z is the smallest prime number greater than or equal to M ₀ *g+1, and M ₀ represents the number of base sequence groups in the communication system in which the base station is located. Taking LTE as an example, the value of Q may be a divisor of 12, that is, 1, 2, 3, 4, 6, and 12, and the value of M ₀ is 30.

It should be understood that when the value of the number of resource blocks occupied by the uplink bandwidth of the serving cell of the UE is less than the predetermined threshold L, the number of base sequences of the base sequence group corresponding to the cell is 1; The base sequence group is extended. In order to enable the cell to support multiple streams of MIMO, the base station may adopt the method performed by the base station in the embodiment shown in FIG. 3, FIG. 5, and FIG. 6, and the corresponding UE side adopts FIG. 2, FIG. 3, and FIG. The method performed by the user equipment in the embodiment is not described herein again.

According to the number of MIMO streams that the serving cell of the UE needs to support, the number of base sequences in the extended base sequence group can be determined, and all base sequence groups are extended.

In the 8-stream MIMO scenario, Q is 4, then M ₀ *ceil(S/Q)+1=30*(8/4)+1=61, and the minimum prime number greater than or equal to 61 is 61, that is, Z. =61,ceil((Z)/12)=ceil((61)/12)=6, which is a multiple of 2 and 3. At this time, L takes a value of 6. 10 is a schematic diagram of another base sequence grouping of the present application. As shown in FIG. 10, in the 8-stream MIMO scenario, when 1≤m≤5, each base sequence group only needs one root sequence, and the intra-group number v=0; when m≥6, each base sequence group Contains 2 base sequences, the serial number v=0,1.

In a 12-stream MIMO scenario, Q has a value of 4, then M ₀ *ceil(S/Q)+1=30*(12/4)+1=91, and the minimum prime number greater than or equal to 91 is 97, that is, Z. =97,ceil((Z)/12)= ceil((97)/12)=9, which is a multiple of 3. At this time, L is 9. 11 is a schematic diagram of still another base sequence grouping of the present application. As shown in FIG. 11, in the scenario of 12-stream MIMO, when 1≤m≤8, only one root sequence is needed for each base sequence group, and the sequence number v=0 in the group; when m≥6, each base sequence group Two base sequences are included, and the intra-group number is v=0,1. Taking 12-stream MIMO as an example, when m≥9, each base sequence group contains three base sequences, and the intra-group numbers are v=0, 1, and 2.

In a 16-stream MIMO scenario, if Q is 4, then M ₀ *ceil(S/Q)+1=30*(16/4)+1=121, and the minimum prime number greater than or equal to 121 is 127, that is, Z. =127,ceil((Z)/12)=ceil((127)/12)=11, greater than or equal to 11, and the minimum of multiples of 2, 3 or 5 is 12, in which case L is 12 . 12 is a schematic diagram of still another base sequence grouping of the present application. As shown in FIG. 12, in the scenario of 12-stream MIMO, when 1≤m≤11, only one root sequence is needed for each base sequence group, and the sequence number v=0 in the group; when m≥12, each base sequence group The group contains 4 base sequences with the serial number v=0, 1, 2, 3.

In addition, it should be understood that, in the embodiment of the present application, the base station may configure a base sequence group including different base sequence numbers for different cells according to the number of MIMO streams that the cell needs to support. For example, the cells A, B, and C under the control of the base station need to support 8-stream MIMO, 12-stream MIMO, and 16-stream MIMO, respectively, and the base sequence groups allocated by the base station for the cells A, B, and C are respectively expanded to include 2 and 3 , a base sequence group of 4 base sequences, and the like.

Based on the extended base sequence group, the base station may send configuration information to the UE, where the configuration information includes a sequence number in the group, and the sequence number in the group is used to indicate the sequence number of the base sequence of the user equipment in the associated base sequence group.

902. The UE determines a base sequence group and a base sequence of the UE.

After receiving the configuration information sent by the base station, the UE may determine the base sequence group to which the base sequence of the current time slot belongs according to the sequence shift mode of the UE, and the group hop corresponding to the current time slot of the UE transmitting the reference signal, and further the base sequence group. Determine the base sequence corresponding to the sequence number in the group.

The UE determines the base sequence group to which the base sequence of the current time slot belongs according to the sequence shift mode of the UE and the group hop corresponding to the current time slot in which the UE transmits the reference signal, which can be expressed by the following formula:

u=(f _gh (n _s )+f _ss )mod M ₀ ,

After determining the group number of the base sequence group to which the base sequence of the current slot n _s belongs, the UE may determine the root sequence index of the base sequence of the current slot n _s , and the root sequence index q may be a function of u, v, and sequence length. . An exemplary function is as follows:

The z-order ZC sequence expression is as follows:

The base sequence expression is as follows:

903. The UE generates a reference signal according to the base sequence.

In the LTE protocol, a ZC sequence is used to generate an uplink reference signal, including a DRS of a PUSCH, a DRS of a PUCCH, and an SRS. The ZC sequence is cyclically shifted to generate an orthogonal reference signal.

among them,

Indicates the maximum number of RBs for uplink transmission. Reference sequence

Obtained after the cyclic shift.

904. The UE sends a reference signal to the base station.

In this embodiment, the base station sends configuration information to the user equipment based on the extended base sequence group, so that the user equipment determines the base sequence transmission reference signal according to the configuration information, so that more base sequences are allocated in each cell to support more. The MIMO of the number of streams can support different UEs in the cell to adopt different base sequences, increase uplink capacity, and improve spectrum efficiency.

In addition, in the embodiment of the present application, by allocating more base sequences in each cell, It is sufficient to support UEs in a cell to adopt different base sequences in different frequency bands in the same time slot, thereby reducing PAPR.

FIG. 13 is a schematic diagram of a transmission method of a reference signal sequence in an embodiment of the present application. The method of Figure 13 is performed by a base station.

1301. The base station sends configuration information to the user equipment, where the configuration information is used to indicate a first base sequence that the base station allocates for the user equipment.

Each base sequence group of the serving cell allocated to the user equipment is expanded into a base sequence group including g base sequences, g is not less than ceil (S/Q), and Q is a MIMO stream supported by a base sequence. The maximum value of the number, S is the number of MIMO streams that the serving cell of the user equipment needs to support, S>Q, and the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system. The number of RBs of the uplink bandwidth of the user equipment is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), Z For the smallest prime number greater than or equal to M ₀ *g+1, M ₀ represents the number of base sequence groups in the communication system in which the base station is located.

It should be understood that, in the embodiment of the present application, the base station may configure a base sequence group including different base sequence numbers for different cells according to the number of MIMO streams that the cell needs to support. For example, the cells A, B, and C under the control of the base station need to support 8-stream MIMO, 12-stream MIMO, and 16-stream MIMO, respectively, and the base sequence groups allocated by the base station for the cells A, B, and C are respectively expanded to include 2 and 3 , a base sequence group of 4 base sequences, and the like.

1302. The base station receives a reference signal generated by the user equipment according to the first base sequence.

In the embodiment of the present application, after the uplink bandwidth of the user equipment is greater than the predetermined threshold, the base station sends the configuration information to the user equipment based on the extended base sequence group, so that the user equipment determines, according to the configuration information, the base used by the user equipment to send the reference signal. The sequence is such that more base sequences are allocated in each cell to support MIMO of more streams, thereby enabling different UEs in the cell to adopt different base sequences, increasing uplink capacity, and improving spectrum efficiency.

Optionally, in an embodiment, the first base sequence group is a base sequence group corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a sequence number in the group, and the sequence number in the group is used. The user equipment is configured to determine the first base sequence according to the sequence shift mode of the user equipment, the group hop corresponding to the user equipment in the current time slot, and the sequence number of the first base sequence in the first base sequence group. group.

For a specific implementation of the embodiment of the present application, reference may be made to the method performed by the base station in the embodiment shown in FIG. 9 , which is not repeatedly described herein.

The embodiment of the present application further provides a user equipment 1 for performing the method of the embodiment shown in FIG. 2 and implementing the functions of the UE in the embodiments shown in FIG. 3 and FIG. 5.

In particular, the user equipment 1 can implement a corresponding method by means of a functional module, which can comprise means for performing the method of the embodiment shown in FIG. 2. For example, the user equipment 1 may include a receiving unit, a determining unit, a generating unit, and a sending unit, where

a receiving unit, configured to receive configuration information sent by the base station, where the configuration information is used to indicate a first base sequence group allocated by the base station to the user equipment 1, where the configuration information is a base in the communication system where the base station is located based on the base station Generating a partitioning manner of the sequence group, the dividing manner dividing the base sequence group in the communication system into a plurality of base sequence sets, each base sequence set including at least one base sequence group, and the multiple base sequence sets At least one base sequence set includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the plurality of base sequence sets.

a determining unit, configured to determine the first base sequence group according to the configuration information.

And a generating unit, configured to generate a reference signal according to the first base sequence group.

And a sending unit, configured to send the reference signal to the base station.

The embodiment of the present application further provides a base station 1 for performing the method of the embodiment shown in FIG. 6 and implementing the functions of the base station in the embodiments shown in FIG. 3 and FIG. 5.

In particular, the base station 1 can implement a corresponding method by means of a functional module, which can comprise means for performing the method of the embodiment shown in Fig. 6. For example, the base station 1 may include a transmitting unit and a receiving unit, where

a sending unit, configured to send, to the user equipment, configuration information, where the configuration information is used to indicate a first base sequence group allocated by the base station 1 to the user equipment, where the configuration information is a base station 1 based on a base station in the communication system where the base station 1 is located a partitioning manner of the sequence group, where the partitioning manner divides the base sequence group in the communication system where the base station 1 is located into a plurality of base sequence sets, each base sequence set includes at least one base sequence group, and the multiple The at least one base sequence set in the base sequence set includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the plurality of base sequence sets.

And a receiving unit, configured to receive a reference signal generated by the user equipment according to the first base sequence group.

The embodiment of the present application further provides a network side device 1 for performing the method of the embodiment shown in FIG. 7 and implementing the functions of the base station controller in the embodiment shown in FIG. 5.

Specifically, the network side device 1 can implement a corresponding method by a functional module, and the network side device 1 can include a unit for performing the method of the embodiment shown in FIG. For example, the network side device 1 may include a dividing unit and a transmitting unit, where

a dividing unit, configured to divide a base sequence group of a communication system into a plurality of base sequence sets according to a division manner, each base sequence set includes a base sequence group number of not less than one, and the plurality of bases At least one of the set of base sequences in the set of sequences comprises at least two sets of base sequences.

a sending unit, configured to send the splitting result of the splitting mode to a base station that is controlled by the network side device, so that the base station sends configuration information to the user equipment according to the dividing manner, so that the user equipment is based on the base sequence indicated by the configuration information. The group sends a reference signal.

The embodiment of the present application further provides a user equipment 2 for performing the method of the embodiment shown in FIG. 8 and implementing the functions of the UE in the embodiment shown in FIG.

In particular, the user equipment 2 may implement a corresponding method by means of a functional module, which may comprise means for performing the method of the embodiment shown in FIG. For example, the user equipment 2 may include a receiving unit, a determining unit, a generating unit, and a sending unit, where

The receiving unit is configured to receive configuration information sent by the base station, where the configuration information is used to indicate the first base sequence allocated by the base station to the user equipment 2.

Each base sequence group of the serving cell allocated to the user equipment is expanded into a base sequence group including g base sequences, g is not less than ceil (S/Q), and Q is a MIMO stream supported by a base sequence. The maximum value of the number, S is the number of MIMO streams that the serving cell of the user equipment 2 needs to support, S>Q, and the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system, and The number of resource blocks RB of the uplink bandwidth of the user equipment 2 is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), Z is the smallest prime number greater than or equal to M ₀ *g+1, and M ₀ represents the number of base sequence groups in the communication system in which the base station is located.

a determining unit, configured to determine the first base sequence according to the configuration information.

And a generating unit, configured to generate a reference signal according to the first base sequence.

The embodiment of the present application further provides a base station 2 for performing the method of the embodiment shown in FIG. And the function of the base station in the embodiment shown in FIG. 8 is implemented.

In particular, base station 2 may implement a corresponding method by means of a functional module, and base station 2 may comprise means for performing the method of the embodiment shown in FIG. For example, the base station 2 may include a transmitting unit and a receiving unit, where

And a sending unit, configured to send, to the user equipment, configuration information, where the configuration information is used to indicate a first base sequence that the base station 2 allocates for the user equipment.

Each base sequence group of the serving cell allocated to the user equipment is expanded into a base sequence group including g base sequences, g is not less than ceil (S/Q), and Q is a MIMO stream supported by a base sequence. The maximum value of the number, S is the number of MIMO streams that the serving cell of the user equipment needs to support, S>Q, the first base sequence group to which the first base sequence belongs is one of the extended base sequence groups of the communication system, and The number of resource blocks RB of the uplink bandwidth of the user equipment is greater than or equal to a predetermined threshold L, and L satisfies the following condition: L is a multiple of 2, 3, or 5, and L is an integer not less than ceil ((Z)/12), Z is the smallest prime number greater than or equal to M ₀ *g+1, and M ₀ represents the number of base sequence groups in the communication system in which the base station 2 is located.

The receiving unit 1802 is configured to receive a reference signal generated by the user equipment according to the first base sequence.

The user equipment 3 is also proposed in the embodiment of the present application. A schematic diagram of a physical device structure of the user equipment 3, as shown in FIG. 14, includes a processor 1402, a memory 1403, a transmitter 1401, and a receiver 1404.

Receiver 1404, transmitter 1401, processor 1402, and memory 1403 are interconnected by a bus 1406 system. The bus 1406 can be an ISA bus, a PCI bus, or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 14, but it does not mean that there is only one bus or one type of bus. In a particular application, transmitter 1401 and receiver 1404 can be coupled to antenna 1405.

The memory 1403 is configured to store a program. In particular, the program can include program code, the program code including computer operating instructions. The memory 1403 can include read only memory and random access memory and provides instructions and data to the processor 1402. The memory 1403 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.

The processor 1402 executes a program stored in the memory 1403.

Specifically, in the user equipment 3, the processor 1402 can be used to perform the embodiment shown in FIG. 2. The method and the functions of the UE in the embodiment shown in FIG. 3 and FIG. 5 are implemented.

Processor 1402 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1402 or an instruction in a form of software. The processor 1402 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP Processor, etc.), or a digital signal processor (DSP), an application specific integrated circuit. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1403, and the processor 1402 reads the information in the memory 1403 and completes the steps of the above method in combination with the hardware thereof.

The embodiment of the present application further provides a base station 3, and a schematic diagram of a physical device structure thereof is shown in FIG. 14. The physical unit included in the application is similar to the user equipment 3, and details are not described herein.

Specifically, in the base station 3, the processor 1402 can be used to perform the method of the embodiment shown in FIG. 6, and implement the functions of the base station in the embodiment shown in FIG. 3 and FIG.

The embodiment of the present application further provides a network side device 2, and a schematic diagram of a physical device structure thereof is shown in FIG. 14. The physical unit included in the application is similar to the user equipment 3, and details are not described herein.

Specifically, in the network side device 2, the processor 1402 is configured to perform the method of the embodiment shown in FIG. 7, and implement the functions of the base station controller in the embodiment shown in FIG.

The embodiment of the present application further provides a user equipment 4, and a schematic diagram of a physical device structure thereof is shown in FIG. 14. The physical unit included in the application is similar to the user equipment 3, and details are not described herein.

Specifically, in the user equipment 4, the processor 1402 is configured to perform the method of the embodiment shown in FIG. 8 and implement the functions of the UE in the embodiment shown in FIG.

The embodiment of the present application further provides a base station 4, and a schematic diagram of a physical device structure thereof is shown in FIG. 14. The physical unit included in the application is similar to the user equipment 3, and details are not described herein.

Specifically, in the base station 4, the processor 1402 is configured to perform the method of the embodiment shown in FIG. 13 and implement the functions of the base station in the embodiment shown in FIG.

The embodiment of the present application also proposes a computer readable medium 1 storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.

The embodiment of the present application also proposes a computer readable medium 2 storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.

The embodiment of the present application also proposes a computer readable medium 3 storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.

The embodiment of the present application also proposes a computer readable medium 4 storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.

The embodiment of the present application also proposes a computer readable medium 5 storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Professionals can use different parties for each specific application The described functionality is implemented, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

This functionality, if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method of various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It is covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of protection of the claims.

Claims

A method for transmitting a reference signal sequence, comprising:

The user equipment receives the configuration information sent by the base station, where the configuration information is used to indicate the first base sequence group allocated by the base station to the user equipment, where the configuration information is that the base station is based on the communication system where the base station is located. Generating a partitioning manner in a base sequence group, the partitioning manner dividing a base sequence group in the communication system into a plurality of base sequence sets, each of the base sequence sets comprising at least one base sequence group, and At least one of the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the plurality of base sequence sets;

Determining, by the user equipment, the first base sequence group according to the configuration information;

The user equipment generates a reference signal according to the first base sequence group and sends the reference signal to the base station.
The method of claim 1 wherein

The first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, and the dividing manner is to manage one of a base sequence group of the network system of the base station to the communication system. And the configuration information includes a set number and a serial number in the set, where the set number is used to represent the number of the first base sequence set, and the serial number in the set is used to indicate that the first base sequence group is in the a sequence number in the first base sequence set;

Determining, by the user equipment, the first base sequence group according to the configuration information includes:

The user equipment determines the first base sequence group according to the set number and the in-set sequence number.
The method of claim 1 wherein

The first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a total number of sets and a serial number within the set, and the serial number in the set is used to indicate the first a sequence number of a base sequence group in the first base sequence set, and each of the base sequence sets of the plurality of base sequence sets divided according to the division manner includes an equal number of base sequence groups, and The total number of sets of the plurality of base sequences is equal to the total number of the sets;

Determining, by the user equipment, the first base sequence group according to the configuration information includes:

Determining, by the user equipment, the first base sequence set according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the total number of the set. Combined

The user equipment determines the first base sequence group according to the first base sequence set and the set inner sequence number.
The method of claim 1 wherein

The first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a set of base sequence groups and a sequence number within the set, where the sequence number is used for a sequence number indicating the first base sequence group in the first base sequence set, and each of the base sequence sets of the plurality of base sequence sets divided according to the division manner includes a base sequence group number equal to The number of sets of base sequences in the set;

Determining, by the user equipment, the first base sequence group according to the configuration information includes:

Determining, by the user equipment, the first base sequence set according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the set of the base sequence group;

The user equipment determines the first base sequence group according to the first base sequence set and the set inner sequence number.
The method according to any one of claims 1 to 4, wherein the configuration information is transmitted by radio resource control RRC signaling and/or downlink control information DCI.
A method for transmitting a reference signal sequence, comprising:

The base station sends the configuration information to the user equipment, where the configuration information is used to indicate the first base sequence group allocated by the base station to the user equipment, where the configuration information is that the base station is based on the communication system where the base station is located. Generating a partitioning manner of the base sequence group, the partitioning manner dividing the base sequence group in the communication system in which the base station is located into a plurality of base sequence sets, each of the base sequence sets including at least one base sequence And the at least one of the plurality of base sequence sets includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is the plurality of base sequence sets One;

The base station receives the reference signal generated by the user equipment according to the first base sequence group.
The method according to claim 6, wherein the first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, and the dividing manner is a network for managing the base station. a method for dividing a base sequence group of the communication system by the side device, where the configuration information includes a set number and a sequence number, the set number is used to indicate a number of the first base sequence set, and the set is within the set a serial number for indicating that the first base sequence group is at the first base a sequence number in the sequence set, the set number and the sequence number in the set are used by the user equipment to determine the first base sequence group according to the set number and the in-set sequence number.
The method according to claim 6, wherein the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a total number of sets and a set. a sequence number, where the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the base sequences of the plurality of base sequence sets divided according to the division manner The set includes the same number of base sequence groups, and the total number of the plurality of base sequence sets is equal to the total number of the sets, and the total number of the sets and the serial number in the set are used by the user equipment according to the user equipment. The set shift mode, the set hop corresponding to the current time slot of the user equipment transmitting the reference signal, and the total number of the sets determine the first base sequence group.
The method according to claim 6, wherein the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a set base sequence group. a number and a sequence number within the set, wherein the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the plurality of base sequence sets divided according to the division manner The base sequence set includes a base sequence group number equal to the set inner base sequence group number, the set inner base sequence group number and the set inner sequence number are used by the user equipment according to the collection of the user equipment The bit pattern, the set hop of the user equipment corresponding to the current time slot in which the reference signal is transmitted, and the number of base sequence groups in the set determine the first base sequence group.
The method according to any one of claims 6 to 9, wherein the configuration information is transmitted by radio resource control RRC signaling and/or downlink control information DCI.
A method for transmitting a reference signal sequence, comprising:

The network side device divides the base sequence group of the communication system into a plurality of base sequence sets according to a division manner, and each of the base sequence sets includes a base sequence group number of not less than one, and the plurality of At least one of the set of base sequences in the set of base sequences comprises at least two sets of base sequences;

Transmitting, by the network side device, the division result of the division manner to a base station that is controlled by the network side device, so that the base station sends configuration information to the user equipment according to the division manner, so that the user equipment is based on the configuration. The base sequence group indicated by the information transmits a reference signal.
A user equipment, comprising:

a receiving unit, configured to receive configuration information sent by the base station, where the configuration information is used to indicate a first base sequence group allocated by the base station to the user equipment, where the configuration information is that the base station is located based on the base station a division of a base sequence group in a communication system, the And dividing the base sequence group in the communication system into a plurality of base sequence sets, each of the base sequence sets comprising at least one base sequence group, and at least one of the plurality of base sequence sets The sequence set includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the plurality of base sequence sets;

a determining unit, configured to determine the first base sequence group according to the configuration information;

Generating unit, configured to generate a reference signal according to the first base sequence group;

And a sending unit, configured to send the reference signal to the base station.
User equipment according to claim 12, characterized in that

The first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, and the dividing manner is to manage one of a base sequence group of the network system of the base station to the communication system. And the configuration information includes a set number and a serial number in the set, where the set number is used to represent the number of the first base sequence set, and the serial number in the set is used to indicate that the first base sequence group is in the a sequence number in the first base sequence set;

The determining unit is specifically configured to: determine the first base sequence group according to the set number and the in-set sequence number.
A user equipment according to claim 12, wherein

The first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a total number of sets and a serial number within the set, and the serial number in the set is used to indicate the first a sequence number of a base sequence group in the first base sequence set, and each of the base sequence sets of the plurality of base sequence sets divided according to the division manner includes an equal number of base sequence groups, and The total number of sets of the plurality of base sequences is equal to the total number of the sets;

The determining unit is specifically configured to: determine, according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the total number of the set; The first base sequence set and the in-set sequence number determine the first base sequence set.
A user equipment according to claim 12, wherein

The first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, where the configuration information includes a set of base sequence groups and a sequence number within the set, where the sequence number is used for a sequence number indicating the first base sequence group in the first base sequence set, and each of the base sequence sets of the plurality of base sequence sets divided according to the division manner includes a base sequence group number equal to The number of sets of base sequences in the set;

The determining unit is specifically configured to: determine, according to the set shift mode of the user equipment, the set hop corresponding to the current time slot of the user equipment that sends the reference signal, and the number of the set of base sequence groups in the set, the first base a sequence set; determining the first base sequence group according to the first base sequence set and the set inner sequence number.
The user equipment according to any one of claims 12 to 15, wherein the configuration information is sent by radio resource control RRC signaling and/or downlink control information DCI.
A base station, comprising:

a sending unit, configured to send, to the user equipment, the configuration information, where the configuration information is used to indicate the first base sequence group allocated by the base station to the user equipment, where the configuration information is that the base station is located based on the base station Generating a partitioning manner of a base sequence group in a communication system, the partitioning manner dividing a base sequence group in a communication system in which the base station is located into a plurality of base sequence sets, each of the base sequence sets including at least a base sequence group, and at least one of the base sequence sets includes at least two base sequence groups, and the first base sequence set to which the first base sequence group belongs is one of the plurality of base sequence sets;

And a receiving unit, configured to receive a reference signal generated by the user equipment according to the first base sequence group.
The base station according to claim 17, wherein the first base sequence set is a base sequence set allocated by the base station to a serving cell to which the user equipment belongs, and the dividing manner is a network for managing the base station. a method for dividing a base sequence group of the communication system by the side device, where the configuration information includes a set number and a sequence number, the set number is used to indicate a number of the first base sequence set, and the set is within the set The sequence number is used to indicate the sequence number of the first base sequence group in the first base sequence set, and the set number and the sequence number are used by the user equipment according to the set number and the sequence number in the set. The first set of base sequences is determined.
The base station according to claim 17, wherein the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a total number of sets and a set. a sequence number, where the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the base sequences of the plurality of base sequence sets divided according to the division manner The set includes the same number of base sequence groups, and the total number of the plurality of base sequence sets is equal to the total number of the sets, and the total number of the sets and the serial number in the set are used by the user equipment according to the user equipment. The set shift mode, the set hop corresponding to the current time slot of the user equipment transmitting the reference signal, and the total number of the sets determine the first base sequence group.
The base station according to claim 17, wherein the first base sequence set is a base sequence set corresponding to a current time slot in which the user equipment sends a reference signal, and the configuration information includes a set of base sequence groups. a number and a sequence number within the set, wherein the sequence number is used to indicate a sequence number of the first base sequence group in the first base sequence set, and each of the plurality of base sequence sets divided according to the division manner The base sequence set includes a base sequence group number equal to the set inner base sequence group number, the set inner base sequence group number and the set inner sequence number are used by the user equipment according to the collection of the user equipment The bit pattern, the set hop of the user equipment corresponding to the current time slot in which the reference signal is transmitted, and the number of base sequence groups in the set determine the first base sequence group.
The base station according to any one of claims 17 to 20, wherein the configuration information is transmitted by radio resource control RRC signaling and/or downlink control information DCI.
A network side device, comprising:

a dividing unit, configured to divide a base sequence group of the communication system into a plurality of base sequence sets according to a division manner, each of the base sequence sets includes a base sequence group number of not less than one, and the At least one of the plurality of base sequence sets comprises at least two base sequence sets;

a sending unit, configured to send the splitting result of the splitting mode to a base station that is controlled by the network side device, so that the base station sends configuration information to the user equipment according to the dividing manner, so that the user equipment is based on the configuration The base sequence group indicated by the information transmits a reference signal.