WO2021208109A1

WO2021208109A1 - Communication method and apparatus

Info

Publication number: WO2021208109A1
Application number: PCT/CN2020/085468
Authority: WO
Inventors: 曲秉玉; 位祎; 李雪茹; 龚名新
Original assignee: 华为技术有限公司
Priority date: 2020-04-18
Filing date: 2020-04-18
Publication date: 2021-10-21
Also published as: WO2021208390A1; CN115428378A

Abstract

The present application provides a communication method and apparatus. The method may comprise that: a terminal device obtains a signal sequence, wherein a group identification u for determining a basic sequence of the signal sequence may be determined according to the product of a first portion f₁ and a second portion f₂, the first portion f₁ being related to a time domain position where a signal is located, and the second portion f₂ being related to an identification n_ID of the signal sequence; and the terminal device can generate the signal according to the signal sequence and send the generated signal to a network device. In the present application, the group identification of the basic sequence can be subjected to non-linear processing, for example, the group identification of the basic sequence may be determined according to the product of two portions. Compared with an additive operation, the operation mode enables intra-cell and inter-cell interference to achieve a better randomization effect so that channel estimation precision can be improved by means of channel estimation time domain filtering, and is simpler and more feasible.

Description

Communication method and device

Technical field

This application relates to the field of communication, and more specifically, to a communication method and device.

Background technique

In systems such as long term evolution (LTE) and new radio (NR), uplink reference signals, such as uplink demodulation reference signal (DMRS) and uplink sounding reference signal (SRS) ) And the sequence of the random access preamble signal are all generated according to the base sequence (base sequence). The base sequence may be generated according to a ZC (Zadoff-Chu) sequence. For example, the base sequence may be the ZC sequence itself, or the base sequence may be a sequence generated by the ZC sequence through cyclic expansion or interception.

Usually the same base sequence is used in the same cell, and different base sequences are used in different cells. However, when the number of terminal devices in a cell is large, such as when the system is overloaded, in order to avoid the problem of outdated mobile user channel state information caused by the long configuration period of SRS, multiple configurations may be configured in the same cell. A base sequence, that is, terminal devices in the same cell may use SRS sequences generated from different base sequences.

This may cause some problems. For example, the interference between SRS sequences in a cell increases, and the channel estimation accuracy of stationary users decreases; for another example, the inter-cell SRS interference increases, which causes the channel estimation accuracy of cell edge users to decrease.

In order to randomize the interference between SRS sequences within and between cells, the terminal equipment can be made to use different base sequences to generate SRS sequences in different SRS measurement periods, so that any one of two users who use different base sequences to generate SRS sequences can be generated. The inter-interference can vary randomly in each SRS measurement period. Can use sequence group hopping (group hopping) to achieve the above purpose.

Following the sequence group hopping method in the existing standard, the sequence group identifier is randomly generated according to a random sequence with the identifier of the reference signal sequence as the initial value. The relationship between the sequence group identifier and the reference signal sequence identifier is irregular, and the value of the sequence group identifier cannot be controlled according to the value of the reference signal sequence identifier. Therefore, when the sequence group hopping is turned on, it may cause very serious intra-cell interference and inter-cell interference. The randomization effect of intra-cell interference and inter-cell interference is poor, and channel estimation is inaccurate.

Summary of the invention

The present application provides a communication method and device. By designing a group identifier for generating a base sequence of a signal sequence, interference within and between cells can achieve better randomization effects, so that time domain filtering can be achieved through channel estimation To improve the accuracy of channel estimation.

In the first aspect, a communication method is provided. The method may be executed by a terminal device, or may also be executed by a chip or circuit configured in the terminal device, which is not limited in this application.

The method may include: acquiring a first sequence; generating a first signal according to the first sequence; sending the first signal to the network device; wherein the first sequence is determined by the first base sequence, and the first group of the first base sequence The identifier u is determined based on the product of the first part f ₁ and the second part f _2. The first part f _{1 is} related to the time domain position where the first signal is located, and the second part f _{2 is} related to the identification n _{ID of the} first sequence. A group of identifiers u belong to the first group of identifiers, and the first group of identifiers includes X group identifiers, and X is an integer greater than 1.

Optionally, the first signal may be a reference signal, or the first signal may also be a control signal, or the first signal may also be a synchronization signal, and the first signal may also be other sequence-based signals. The specific form of the first signal is not limited by the embodiment itself.

Based on the above technical solution, by designing a formula for generating the group identity (ID) of the base sequence of the signal sequence (such as the first sequence), the group identification of the base sequence and the signal sequence (such as the reference signal sequence (RS) The relationship between the identification of sequence)) and the position in the time domain. For example, the group identification of the base sequence can be processed through non-linearization. For example, the group identification of the base sequence can be determined based on the product of two parts, of which one part is related to the time domain position where the signal is located, and the other is related to the identification of the signal sequence. Compared with the addition operation, this operation method makes the intra-cell and inter-cell interference can achieve a better randomization effect, so that the channel estimation accuracy can be improved through the channel estimation time-domain filtering, and it is simpler than the addition operation Easy.

With reference to the first aspect, in some implementations of the first aspect, before acquiring the first sequence, the method further includes: receiving indication information from the network device, where the indication information is used to indicate the identifier n _ID .

With reference to the first aspect, in some implementations of the first aspect, the first group identifier u of the first base sequence is determined according to the product of the first part f ₁ and the second part f ₂ , specifically including that u satisfies the following formula:

u=(f ₁ *f ₂ )mod X, or u=(f ₁ *f ₂ )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.

Based on the above technical solution, by _{performing remainder processing on f 1} *f ₂ and X, the calculated value of f ₁ *f ₂ is between [0, X-1]. It should be understood that the embodiment of the present application does not limit the remainder operation.

With reference to the first aspect, in some implementations of the first aspect, the first part f _{1 is} related to the time domain position where the first signal is located, and specifically includes: the first part f ₁ and: time domain position, identification n _ID , and X Related.

With reference to the first aspect, in some implementations of the first aspect, the first part f _{1 is} related to: time domain position, identification n _ID , and X, including:

The first part f ₁ and: time domain position sum

Related,

in,

Indicates rounding down.

With reference to the first aspect, in some implementation manners of the first aspect, the time domain position where the first signal is located includes:

And l, where,

Represents the time slot number in the system frame, and l represents the position of the symbol sending the first signal in the current time slot.

Based on the above technical solution, the first part f _{1 is} related to the time domain position where the first signal is located. Therefore, the interference between terminal devices can be randomized without increasing the inter-cell and intra-cell interference, thereby enabling channel estimation Time domain filtering to improve the accuracy of channel estimation.

With reference to the first aspect, in some implementations of the first aspect, the first part f _{1 is} related to the time domain position where the first signal is located, and specifically includes that the first part f ₁ satisfies the following formula:

in,

Among them, Z is an integer greater than 1 or equal to 1; c(i) is a pseudo-random sequence, and the initial seed of c(i) is

Means round down,

Represents the number of symbols in a time slot; mod represents the remainder operation.

With reference to the first aspect, in some implementations of the first aspect, the second part f _{2 is} related to the identification n _{ID of the} first sequence, and specifically includes: the second part f _{2 is} related to the identification n _ID and X.

For example, when the sequence group jump is turned on, the first group identifier u of the first base sequence is determined according to the product of the first part f ₁ and the second part f ₂ .

For example, when the sequence group jump is closed,

Based on the above technical solution, the signal sequence group hopping method can be designed to randomize the interference between terminal devices without increasing the interference within and between cells, so that the channel can be improved by channel estimation time domain filtering. Estimated accuracy.

With reference to the first aspect, in some implementations of the first aspect, the second part f _{2 is} related to: the identifier n _ID and X, specifically including: the second part f _{2 is} related to n _ID mod X, where mod represents the remainder Operation.

Binding a first aspect, certain implementations of the first aspect, the second portion associated with f ₂ n _ID modX, f ₂ comprises a second portion satisfy the following _{_{formula: f 2 = n ID mod X}} + 1.

Based on the above technical solution, by controlling n _ID , the final calculation result, that is, the group identification, can be controlled more flexibly.

In the second aspect, a communication method is provided. The method may be executed by a network device, or may also be executed by a chip or circuit configured in the network device, which is not limited in this application.

The method may include: receiving a first signal from a first terminal device; determining a first sequence, and processing the first signal according to the first sequence; wherein the first sequence is determined by the first base sequence, and the first base sequence The first group of identifier u is determined based on the product of the first part f ₁ and the second part f _2. The first part f _{1 is} related to the time domain position where the first signal is located, and the second part f _{2 is} related to the first sequence of identifier n _{ID is} related, the first group identifier u belongs to the first group identifier set, the first group identifier set includes X group identifiers, and X is an integer greater than 1.

With reference to the second aspect, in some implementations of the second aspect, before receiving the signal from the first terminal device, the method further includes: sending indication information to the first terminal device, where the indication information is used to indicate the identifier n _ID .

Binding a second aspect, certain implementations of the second aspect, the first group identifier of the first base sequence u is determined according to a product of a first portion and a second portion f ₁ f _2, in particular comprising a u satisfies the following formula:

u=(f ₁ *f ₂ )mod X, or u=(f ₁ *f ₂ )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.

With reference to the second aspect, in some implementations of the second aspect, the first part f _{1 is} related to the time domain position where the first signal is located, and specifically includes: the first part f ₁ and: time domain position, identification n _ID , and X Related.

With reference to the second aspect, in some implementations of the second aspect, the first part f _{1 is} related to: time domain position, identification n _ID , and X, including:

The first part f ₁ and: time domain position sum

Related,

in,

Indicates rounding down.

With reference to the second aspect, in some implementations of the second aspect, the time domain position includes:

And l, where,

Represents the time slot number in the system frame; l represents the position of the symbol sending the first signal in the current time slot.

With reference to the second aspect, in some implementations of the second aspect, the first part f _{1 is} related to the time domain position where the first signal is located, and specifically includes that the first part f ₁ satisfies the following formula:

in,

Means round down,

With reference to the second aspect, in some implementations of the second aspect, the second part f _{2 is} related to the identification n _{ID of the} first sequence, specifically including: the second part f _{2 is} related to the identification n _ID and X.

With reference to the second aspect, in some implementations of the second aspect, the second part f _{2 is} related to: the identifier n _ID and X, specifically including: the second part f _{2 is} related to n _ID mod X, where mod represents the remainder Operation.

Binding a second aspect, certain implementations of the second aspect, the second portion associated with f ₂ n _ID modX, f ₂ comprises a second portion satisfy the following _{_{formula: f 2 = n ID mod X}} + 1.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: indicating the first identification n _ID to one or more second terminal devices, and the one or more second terminal devices use the first base sequence to generate In the first sequence, one or more second terminal devices are located in the same cell as the first terminal device.

Based on the above technical solution, the network equipment can configure the same signal sequence identifier n _ID for the terminal equipment that uses the same base sequence to generate the signal sequence in the cell, and the network equipment can configure different configurations for the terminal equipment that uses different base sequences to generate the signal sequence in the cell. The signal sequence identification n _ID .

With reference to the second aspect, in some implementations of the second aspect, the method further includes: indicating the second n _ID to one or more third terminal devices, and the one or more third terminal devices use the second base sequence to generate the first n ID In a sequence, one or more third terminal devices are located in the same cell as the first terminal device, and the first base sequence is different from the second base sequence.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: indicating X'different identifiers of the first sequence to the terminal devices in the A cells, and the A cells include the location where the first terminal device is located. A cell, where A is an integer greater than 2 or equal to 2, and X'is an integer greater than 2 or equal to 2, and less than X or equal to X.

Based on the above technical solution, the network equipment can be multiple cells (for example, denoted as A cells), such as multiple cells with greater interference, and configure multiple different signal sequence identifiers (that is, the identifier of the first sequence). Terminal devices in each cell can use different signal sequence identifiers, so that strong inter-cell interference can be avoided as much as possible.

In a third aspect, a communication device is provided, and the communication device is configured to execute the method provided in the above-mentioned first aspect. Specifically, the communication device may include a module for executing the method provided in the first aspect.

In a fourth aspect, a communication device is provided, and the communication device is configured to execute the method provided in the second aspect. Specifically, the communication device may include a module for executing the method provided in the second aspect.

In a fifth aspect, a communication device is provided, including a processor. The processor is coupled with the memory and can be used to execute instructions in the memory to implement the method in any one of the possible implementation manners of the first aspect in the first aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, the processor is coupled with the communication interface, and the communication interface is used to input and/or output information. The information includes at least one of instructions and data.

In an implementation manner, the communication device is a terminal device. When the communication device is a terminal device, the aforementioned communication interface may be a transceiver or an input/output interface.

In another implementation manner, the communication device is a chip or a chip system. When the communication device is a chip or a chip system, the communication interface may be an input/output interface, which may be an input/output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor can also be embodied as a processing circuit or a logic circuit.

In another implementation manner, the communication device is a chip or a chip system configured in a terminal device.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In a sixth aspect, a communication device is provided, including a processor. The processor is coupled with the memory, and can be used to execute instructions in the memory to implement the foregoing second aspect and the method in any one of the possible implementation manners of the second aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, the processor is coupled with the communication interface, and the communication interface is used to input and/or output information. The information includes at least one of instructions and data.

In an implementation manner, the communication device is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication device is a chip or a chip system. When the communication device is a chip or a chip system, the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system. The processor can also be embodied as a processing circuit or a logic circuit.

In another implementation manner, the communication device is a chip or a chip system configured in a network device.

In a seventh aspect, there is provided a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a communication device, the communication device enables the communication device to implement the first aspect and the method in any possible implementation manner of the first aspect.

In an eighth aspect, a computer-readable storage medium is provided with a computer program stored thereon. When the computer program is executed by a communication device, the communication device enables the communication device to implement the second aspect and the method in any possible implementation manner of the second aspect .

In a ninth aspect, a computer program product containing instructions is provided, which when executed by a computer causes the computer to implement the method provided in the first aspect.

In a tenth aspect, a computer program product containing instructions is provided, when the instructions are executed by a computer, the computer realizes the method provided in the second aspect.

In an eleventh aspect, a communication system is provided, including the aforementioned network equipment and terminal equipment.

Description of the drawings

Fig. 1 is a schematic diagram of a communication system suitable for an embodiment of the present application;

Figures 2 and 3 show schematic diagrams of introducing multiple SRS base sequences in a cell;

Fig. 4 is a schematic diagram of a communication method provided according to an embodiment of the present application;

Fig. 5 is a schematic diagram of a communication method applicable to an embodiment of the present application;

Fig. 6 is a schematic diagram of a communication device provided according to an embodiment of the present application;

Fig. 7 is a schematic diagram of a communication device provided according to another embodiment of the present application;

FIG. 8 is a schematic diagram of a terminal device applicable to an embodiment of the present application;

Fig. 9 is a schematic diagram of a network device suitable for an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency Frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), etc.

In order to facilitate the understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first described in detail with reference to FIG. 1.

FIG. 1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application. As shown in FIG. 1, the communication system 100 may include at least one network device, such as the network device 111 shown in FIG. 1, and the communication system 100 may also include at least one terminal device, such as the terminal device 121 to the terminal shown in FIG. Equipment 123. Both network equipment and terminal equipment can be equipped with multiple antennas, and the network equipment and terminal equipment can communicate using multiple antenna technology.

Among them, when a network device communicates with a terminal device, the network device may manage one or more cells, and there may be an integer number of terminal devices in a cell. Optionally, the network device 111 and the terminal device 121 to the terminal device 123 form a single-cell communication system. Without loss of generality, the cell is denoted as cell #1. The network device 111 may be a network device in the cell #1, or in other words, the network device 111 may serve a terminal device (for example, the terminal device 121) in the cell #1.

It should be noted that a cell can be understood as an area covered by a wireless signal of a network device.

It should be understood that the above-mentioned FIG. 1 is only an exemplary illustration, and the application is not limited thereto. For example, the communication system 100 may include a greater number of network devices or a greater number of terminal devices, or the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiments of this application do not limit this. For another example, the communication system 100 may also include other network entities such as a network controller, a mobility management entity, and the embodiment of the present application is not limited thereto.

It should also be understood that the network device in the communication system 100 may be any device with a wireless transceiver function. The equipment includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC) , Base Transceiver Station (BTS), Home Node B (HNB), Home evolved NodeB (HeNB), BaseBand Unit (BBU), Wireless Fidelity, WIFI) system access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP), network node in vehicle network communication (such as roadside station, vehicle equipment, etc.) ) Or the transmission and reception point (TRP), etc., it can also be 5G, such as NR, the gNB in the system, or the transmission point (TRP or TP), one or a group of base stations in the 5G system ( Including multiple antenna panels) The antenna panel may also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU).

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU for short). The CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions. The DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU+AAU. It can be understood that the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.

It should also be understood that the terminal equipment in the communication system 100 may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, User terminal, terminal, wireless communication device, user agent, or user device. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( The wireless terminal in transportation safety, the wireless terminal in the smart city, the wireless terminal in the smart home, and so on. The embodiments of this application do not limit the application scenarios.

To facilitate the understanding of several terms involved in this application, a brief introduction is made.

1. Base sequence (base sequence) and ZC (Zadoff-Chu) sequence

The sequences of uplink reference signals (such as demodulation reference signal (DMRS) and sounding reference signal (SRS)) are all generated according to the base sequence. For example, if the base sequence of length M is r(m), the sequence generated by the base sequence can be:

A·exp(jαm)r(m)

Among them, m=0,1,2,...,M-1, M is an integer greater than 1, A is a complex number, α is a real number determined by a time-domain cyclic shift (also referred to as a cyclic shift value in this article), j It is an imaginary unit, exp represents an exponential function with e as the base.

Exemplarily, the base sequence may be a sequence generated from the ZC sequence. For example, the base sequence may be the ZC sequence itself, or the base sequence may also be a sequence generated by cyclic shift expansion or interception of the ZC sequence. For example, a ZC sequence of length N is denoted as z _q (n), and z _q (n) can be expressed in the following form:

Among them, N is an integer greater than 1, and N represents the length of the ZC sequence. q is the root of the ZC sequence (also called root index or root index), a natural number that is relatively prime to N, and 0<q<N.

In this article, you can use

Represents the reference sequence generated from the base sequence. Among them, q indicates that the root of the ZC sequence generating the base sequence is q. α represents the value determined according to the time domain cyclic shift, which is also called the cyclic shift value.

After obtaining the reference signal sequence, the terminal device can map the reference signal sequence of length M to M subcarriers in a certain order according to the subcarrier index, such as from small to large or from large to small, to generate the reference signal, and Send to the network device.

2. Uplink reference signal

The uplink reference signal is a reference signal (reference signal, RS) sent by a terminal device. The uplink reference signal may include, but is not limited to, for example, SRS, DMRS of the uplink control channel, discrete fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform Downlink physical uplink shared channel (PUSCH) DMRS, phase tracking reference signal, etc.

The uplink reference signal can be used to obtain uplink channel state information, and the channel state information can be used for demodulation and detection of uplink data. In a time division duplex (TDD) system, using channel disparity, the uplink reference signal can also be used to obtain downlink channel state information. Taking SRS as an example, the network device can obtain downlink channel state information by measuring the SRS sequence sent by the terminal device. The channel state information can be used to determine precoding, modulation and coding schemes, etc. during downlink data transmission. It can be seen that obtaining accurate channel state information based on the uplink reference signal is very important for the efficiency of uplink data transmission or downlink data transmission.

In the following, the SRS sequence is taken as an example for description. The design principles of other uplink reference signals are similar, and will not be repeated.

An SRS sequence can be generated from a base sequence. For example, the SRS sequence s(m) of length M can be generated from the base sequence r(m) by the following formula.

s(m)=A·exp(jαm)r(m)

For the meaning of each parameter, you can refer to the above description.

For the same base sequence, using different cyclic shift values α, different SRS sequences can be obtained. When α ₁ and α ₂ satisfy: α ₁ mod2π≠α ₂ mod 2π, the sequence obtained from the base sequence r(m) and α ₁ and the sequence obtained from the base sequence r(m) and α ₂ are mutually positive. Cross, that is, the cross-correlation coefficient is zero.

Among them, the correlation coefficient of the sequence x1(m) and x2(m) of length M is defined as:

Among them, m=0,1...M-1.

Since the cross-correlation is 0, the SRS sequences obtained based on the same base sequence and different cyclic shift values α can be allocated to different users, and these users can send these based on the same base sequence on the same time-frequency resource. For the SRS sequences generated by the cyclic shift, when the delay spread of the user's channel is less than the time length corresponding to the cyclic shift difference, these SRS sequences will not cause interference between users.

For different base sequences, the interference between SRS sequences obtained by using the same or different cyclic shift values α is not zero. That is to say, SRS sequences obtained based on the same or different cyclic shift values of different base sequences are allocated to different users, and these users can send these SRS generated based on the cyclic shift of different base sequences on the same time-frequency resource. Sequence, these SRS sequences may cause inter-user interference.

In the 3rd generation partnership project (the 3rd generation partnership project, 3GPP) standard, the length M of a variety of SRS sequences is given, and the length of the SRS sequence greater than or equal to 72 is selected (that is, the value of each M), respectively 60 base sequences are defined. For an SRS sequence of length M, a maximum prime number less than or equal to M can be determined, such as N _ZC , as the length of the ZC sequence that generates the SRS sequence. Further, these 60 base sequences can be generated from ZC sequences with the same length and different roots. Further, the 60 base sequences are divided into 30 sequence groups, and the base sequences of different sequence groups can be allocated to different cells. The formula for determining the root index q currently defined by 3GPP is:

Among them, v=0 or 1, u=0,1,...,29. u is the group serial number, representing 30 groups, and each group has two root serial numbers, which are determined by v. u and v are configured for terminal equipment by sending configuration information through network equipment.

Take M=72 as an example, the ZC sequence with length 71 is generated for 30 groups of base sequences, and the roots of 30 ZC sequences under the condition of u=0,1,...,29 and v=0 can be calculated from the above formula. , And the roots of 30 ZC sequences when u=0,1,...,29 and v=1. The relationship between the root q of these 60 ZC sequences and the group number u of the base sequence can be shown in Table 1 below Show.

Table 1

It can be found from Table 1 that for the same SRS length M, the base sequence of different group identifiers corresponds to the value of the root index of the ZC sequence, that is, the group identifier of the base sequence corresponds to the value of the root index of the ZC sequence For example, the group identifier of a base sequence can correspond to the values of the root indicators of two ZC sequences.

The sequence group identifier u of the SRS sequence currently specified by 3GPP is defined by the following formula 1:

When the sequence group jump is off,

When the sequence group jump is turned on,

Among them, c(i) is a pseudo-random sequence, and its initial seed is

Variables unique to terminal devices, that is, each terminal device has a

Different terminal equipment

It can be the same or different.

The pseudo-random sequence c(i) in the existing standard is generated in the following formula 2:

c(n)=(x ₁ (n+N _C )+x ₂ (n+N _C ))mod2

x ₁ (n+31)=(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)=(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

Formula 2

Among them, N _C =1600; x ₁ (0)=1, x ₁ (n)=0, n=1, 2,...,30; x ₂ (n), n=0,1,2,. .., 30 is the binary expression _{of c init, namely}

In this application, mod means remainder operation.

Usually the same base sequence is used in the same cell, and different base sequences are used in different cells. However, when the number of terminal devices in a cell is large, such as when the system is overloaded, in order to avoid the problem of outdated mobile user channel state information caused by the long configuration period of SRS, multiple configurations may be configured in the same cell. A base sequence, that is, terminal devices in the same cell may use SRS sequences generated from different base sequences. In other words, users in the same cell can be configured with appropriate

Value so that the terminal equipment in the same cell corresponds to two possible values of the sequence group identifier.

For example, when the sequence group hopping is turned off, the terminal equipment in the same cell

Value satisfies

or

Then, the cell terminal device uses the calculation formula of the sequence group identifier u defined in the existing standard, that is, the above formula 1, and the possible value of u calculated is a or b. At this time, there are two base sequences in the cell.

This may lead to: 1) the interference between SRS sequences in the cell increases, and the channel estimation accuracy of stationary users decreases; 2) the inter-cell SRS interference increases, which leads to the decrease of the channel estimation accuracy of cell edge users.

Follow the existing standard sequence group jump method. When the sequence group hopping is turned on, the sequence group identifier u can be determined according to the following formula 3:

in,

It is the time slot number in the system frame.

Is the position number of the start symbol of the SRS resource in the time slot,

Is the number of symbols in a slot, and l _offset ε{0,1,...,5} is the number of symbols counted forward from the end of the slot.

It is the symbol position of the SRS symbol in the SRS resource.

c(i) is a pseudo-random sequence, and its initial seed is

Variables unique to terminal devices, that is, each terminal device has a

Different terminal equipment

It can be the same or different. The method of generating the pseudo-random sequence c(i) in the existing standard is Equation 2 above.

Based on the existing method, when the sequence group hopping is turned on, it may cause very serious intra-cell SRS interference.

Since multiple SRS base sequences are introduced in the same cell, users who use different SRS base sequences in the same cell need to configure different values of sequence group identifier u, that is to say, they need to configure different values.

The value of. For example, a set of users using the same base sequence in the same cell may be referred to as a user group. For example, when two SRS base sequences are introduced in a cell, users in the cell are divided into two user groups. Users belonging to the same user group use the same SRS base sequence to generate SRS sequences, and users belonging to different groups use different The SRS base sequence generates the SRS sequence. When the sequence group hopping is turned on, since c(i) is a random sequence, it may cause users of different user groups in the same cell to get the same sequence group identifier u, that is, users of different user groups in the same cell The user uses the same base sequence to generate the SRS sequence, which will cause very serious intra-cell SRS interference. As shown in Figure 2, assuming that the users in the same user group

The same, the cell contains two user groups, the first user group

Both are 2, the users in the second user group

The value of is 4, so in the second SRS transmission, it may happen that users in the two user groups use the same base sequence.

Similarly, when the sequence group hopping is turned on, it may increase the interference between neighboring cells.

When sequence group hopping is turned on, it may cause users in two adjacent cells to use the same u, which increases interference between adjacent cells. As shown in Figure 3, for example, suppose that users in the same user group

The same, the cell contains two user groups, the first user group in cell one

Both are 5, the user's in the second user group of cell one

Both are 6, the users in the first user group in cell two

Both are 7, the user's in the second user group of cell two

Both are 8, so the base sequence used by the users in the two cells will be the same during the fifth and eighth SRS transmissions.

Therefore, using the existing method, the sequence group identifier u is based on

Randomly generated for a random sequence of initial values, u and

There is no rule to find the relationship between, and it cannot be based on

To control the value of u so as to avoid

The values of u corresponding to different terminal devices are the same. Therefore, when the sequence group hopping is turned on, it may cause very serious intra-cell interference and inter-cell interference. The randomization effect of intra-cell interference and inter-cell interference is poor, and the channel estimation result is inaccurate.

In view of this, the embodiments of the present application propose a method that can randomize the interference between the terminal devices that generate reference signals based on different base sequences between cells and within the cell, so that the interference within and between cells can achieve better Randomization effect, which can improve channel estimation accuracy through channel estimation time domain filtering.

The various embodiments provided in this application will be described in detail below with reference to the accompanying drawings.

FIG. 4 is a schematic interaction diagram of a communication method 400 provided by an embodiment of the present application. The method 400 may include the following steps.

410: The terminal device obtains the first sequence.

As shown in Figure 4, a possible design, the first sequence can be determined by the first base sequence, and the first group identifier u of the first base sequence is determined based on the product of the first part f ₁ and the second part f ₂ , Where the first part f _{1 is} related to the time domain position where the first signal is located, and the second part f _{2 is} related to the identification of the first sequence.

In the embodiment of the present application, the group identity (ID) of the base sequence of the signal sequence (such as the first sequence) is designed to establish the group identity (ID) of the base sequence and the signal sequence (such as the reference signal sequence) (RS sequence)) and the relationship between the time domain position. For example, the group identification of the base sequence can be determined based on the product of two parts, where one part is related to the time domain position where the signal is located, and the other is related to the identification of the signal sequence. Compared with the addition operation, this operation method makes the intra-cell and inter-cell interference can achieve a better randomization effect, so that the channel estimation accuracy can be improved through the channel estimation time-domain filtering, and it is simpler than the addition operation Easy.

It should be understood that the embodiment of the present application does not limit _{the operation between the first part f 1} and the second part f _{2 to} be a product operation. For example, obtaining the group identifier (such as the first group identifier) may be obtained by _{performing non-linear processing on f 1} and/or f ₂ , such as a power operation.

The first sequence can represent a signal sequence or a sequence of signals. The embodiment of the present application does not limit the specific form of the signal (for example, the first signal). Taking the first signal as an example, the first signal may be a reference signal, or the first signal may also be a control signal, or the first signal may also be a synchronization signal, or the first signal may also be another sequence-based signal. The signal is not limited.

For ease of understanding, the following mainly uses a signal as a reference signal as an example for exemplification.

It should be understood that the embodiment of the present application does not limit how to obtain the reference signal sequence.

In a possible implementation manner, the terminal device obtains the reference signal sequence, which may be calculated by the terminal device through a formula. For example, the terminal device generates a reference signal sequence according to the first base sequence and a predefined rule. In another possible implementation manner, the terminal device obtains the reference signal sequence, or the terminal device obtains the pre-generated reference signal sequence by looking up the table. In this regard, the embodiment of the present application does not limit this.

Optionally, the reference signal sequence is determined by the first base sequence. It can be understood that the reference signal sequence may be generated from the first base sequence, or the reference signal sequence may be obtained by looking up the table according to the first base sequence. . In this regard, the embodiment of this application does not limit it.

For example, the SRS sequence s(m) of length M can be generated from the base sequence r(m) by the following formula.

s(m)=A·exp(jαm)r(m)

For the meaning of each parameter, you can refer to the above description.

420. The terminal device generates a first signal according to the first sequence.

Taking a reference signal as an example, the terminal device generates a reference signal according to the reference signal sequence.

Regarding generating the reference signal according to the reference signal sequence, those skilled in the art should understand its meaning. Generating the reference signal according to the reference signal sequence means that the reference signal sequence is mapped to a reference signal resource (such as a time-frequency resource or a transmission resource for transmitting the reference signal), and then the reference signal is sent through the reference signal resource.

430. The terminal device sends the first signal to the network device.

Taking a reference signal as an example, the terminal device generates a reference signal according to the reference signal sequence, and the terminal device sends the reference signal to the network device.

The specific form of the reference signal is not limited in the embodiment of the present application. For example, the reference signal may be SRS. For another example, the reference signal may also be a reference signal used for channel estimation. There is no restriction on this.

In the following, the group identifier is denoted as u, and the reference signal sequence is described in detail.

In a possible implementation, the group identifier u satisfies formula 4.

u=(f ₁ *f ₂ )mod(Y)-1

Formula 4

In the embodiment of the present application, Y can be any value greater than X, for example, Y=X+1, which is not limited. mod represents the remainder operation. It should be understood that the embodiments of the present application do not limit the remainder operation. For any operation, as long as f ₁ *f ₂ is processed, the calculated value of f ₁ *f ₂ is [0, X-1]. The mod operation is taken as an example description below.

Where, X represents the number of group identifiers in the first group identifier set, X is an integer greater than 1, and u belongs to the first group identifier set. For example, X=30. It should be understood that the first set of identifiers is only a name, and does not limit the protection scope of the embodiments of the present application. For example, the first set of identifiers may also be referred to as a sequence group. Regarding the length of the first set of identifiers (that is, the value of X) or the acquisition method, the embodiment of the present application does not limit it. For example, the lengths of the base sequences in the first group of identification sets are the same. Taking Table 1 as an example, for example, when u∈{0,1,2,...,29}, X=30 and Y=31.

In another possible implementation manner, the group identifier u satisfies formula 5.

u=(f ₁ *f ₂ )mod X

Formula 5

It should be understood that the above formula 4 and formula 5 are only an example, and any modification of formula 4 or formula 5 falls within the protection scope of the embodiments of the present application.

f _{1 is} related to the time domain position where the reference signal is located, and f _{2 is} related to the identification of the reference signal sequence. For example, assuming that f _{2 is} different and f _{1 is the} same, for example, different terminal devices can be designed to have different reference signal sequence identifiers. Then it can be seen from formula 4 or formula 5 that different terminal devices correspond to different u. Therefore, through the embodiments of this application, it is possible to control the value of u by controlling the identifier of the reference signal sequence, so that the identifier of the reference signal sequence is different. The terminal equipment u of is different, so that the situation as shown in Fig. 2 or Fig. 3 can be avoided, and intra-cell interference and inter-cell interference can be reduced.

Optionally, the identifier n _{ID of the} reference signal sequence can be expressed as:

n _ID =X·n+offset,offsetε{0,1,2,...,(X-1)}.

For example, X=30, n _ID =30n+offset, offsetε{0,1,2,...,29}.

Wherein, n is an integer greater than 0 or equal to 0.

In the embodiment of the present application, n _ID may be used to represent the identification of the reference signal sequence. It should be understood that n _ID is only for distinguishing different parameters, and it does not limit the protection scope of the embodiments of the present application. For example, for SRS, the identification of the SRS sequence can also be used

Express.

It should be understood that in actual communication, it may only provide a formula that the group identifier u satisfies, and does not strictly divide the first part and the second part (f ₁ and f ₂ ). Exemplarily, the formula satisfied by the group identifier u includes: the time domain position where the reference signal is located and the identifier of the reference signal sequence. Specifically, for example, the formula that the group identifier u satisfies: the operation between the time domain position of the reference signal and the identifier of the reference signal sequence is a multiplication operation.

It should also be understood that, in the embodiments of this application, the representation of parameters is only an example. For example, u represents the group identifier of the base sequence. The representations used to represent the same parameter in future protocols fall into the embodiments of this application. protected range.

The following describes possible forms of _{f 1} and f _2.

1. Regarding the possible forms _{of f 1.}

Optionally, f _{1 is} related to: the time domain position where the reference signal is located, the identification of the reference signal sequence, and X.

For example, f ₁ and: the time domain position of the reference signal and

Related. in,

Indicates rounding down. It should be understood that the embodiment of the present application does not strictly limit the rounding method.

Exemplarily, the time domain position where the reference signal is located may include, but is not limited to, for example

And l, where,

Represents the time slot number in the system frame, and l represents the position of the symbol for sending the reference signal in the current time slot.

In a possible implementation, f ₁ can be expressed as formula 6.

When group hopping is enabled:

For example, when the sequence group jump is closed,

Among them, Z is an integer greater than or equal to 1.

Among them, c(i) is a pseudo-random sequence, and the initial seed of c(i) is

n _ID represents the identification of the reference signal sequence,

Means round down,

Regarding the generation method of the pseudo-random sequence c(i), it can be generated by the method in the existing standard, for example, formula 2 can be referred to.

It should be understood that in the future protocol, when the method for generating the pseudo-random sequence c(i) (ie formula 2) is adjusted, the method for generating the adjusted pseudo-random sequence c(i) is also applicable to the embodiments of the present application. .

For example, n _ID =X·n+offset,offsetε{0,1,2,...,(X-1)}.

For example, X=30, n _ID =30n+offset, offsetε{0,1,2,...,29}.

in,

Represents the time slot number in the system frame. μ represents the subcarrier interval index, f represents the frame, and s represents the time slot.

Among them, l represents the position of the symbol for sending the reference signal in the current time slot. For example, l represents the lth symbol in a slot.

For example,

The position in the current time slot of the symbol for transmitting the reference signal. in,

Represents the number of symbols in a slot.

Or, for example, l=l ₀ +l'. Among them, l ₀ is the position number of the start symbol of the reference signal resource in the time slot where it is located,

l _offset is the number of symbols counted forward from the end of the time slot, l _offset ∈{0,1,...,5}, and l _{offset is} greater than or equal to

l _offset can be configured by high-level parameters, for example, l _offset can be configured by the start position (startPosition) field in the high-level parameter resource mapping (resourceMapping).

It should be understood that the above formula 6 is only an example, and any modification of this formula falls within the protection scope of the embodiments of the present application.

2. Regarding the possible forms _{of f 2.}

Optionally, f _{2 is} related to: the identifier of the reference signal sequence and X.

For example, f _{2 is} related to n _ID modX.

In a possible implementation, f ₂ can be expressed as Equation 7.

f ₂ = n _ID mod X+1

Formula 7

For example, n _ID =X·n+offset,offsetε{0,1,2,...,(X-1)}. For example, X=30, n _ID =30n+offset, offsetε{0,1,2,...,29}.

It should be understood that the above formula 7 is only an example, and any modification of this formula falls within the protection scope of the embodiments of the present application.

It should also be understood that the above formula 6 and formula 7 only list _{possible forms of f 1} and f ₂ by way of example, and the embodiment of the present application is not limited thereto. As long as f _{1 is} at least related to the time domain position of the reference signal, or f _{1 is} at least related to the time domain position of the reference signal, the identification of the reference signal sequence, and X; or, as long as f _{2 is} at least related to the reference signal sequence It is related to the identification of, or f _{2 is} at least related to the identification of the reference signal sequence and X, both of which are applicable to the embodiments of the present application.

Through the embodiments of the present application, it is possible to control _{any parameter in the first part f 1} or the second part f ₂ to flexibly control the final operation result, that is, the group identification. Therefore, the value of the group identifier of the base sequence can be controlled by controlling the identifier of the reference signal sequence. For example, for different terminal devices, different reference signal sequence identifiers can be designed, so that the corresponding group identifiers of the base sequence are also different. In addition, the other part of the group identifier used to generate the base sequence is related to the time domain position where the reference signal is located, so that the interference between the terminal devices can be randomized without increasing the interference within and between cells, thereby Channel estimation time domain filtering can be used to improve channel estimation accuracy.

Optionally, in a possible design, the group identifier u satisfies formula 8.

When the sequence group jump is turned on,

For example, when the sequence group jump is closed,

Illustratively, the initial seed of c(i) is

For example, n _ID =X·n+offset,offsetε{0,1,2,...,(X-1)}.

For example, X=30, n _ID =30n+offset, offsetε{0,1,2,...,29}.

Regarding the meaning of each parameter, you can refer to the above description, which will not be repeated here.

It should be understood that the above formula 8 is only an example, and any modification of this formula falls within the protection scope of the embodiments of the present application.

It should also be understood that, in actual communication, the formula that the group identifier u satisfies, for example, may exist in a form similar to formula 8; or, it may also exist in a form similar to formula 4 or formula 5, and define f ₁ and f ₂ form.

In the embodiments of the present application, the reference signal sequence group hopping method can be designed to randomize the interference between terminal devices without increasing the interference within and between cells, so that the channel estimation time domain filtering can be used. To improve the accuracy of channel estimation.

_{Optionally, the value of n ID} can be used to avoid different u corresponding to different terminal devices.

One possibility is an implementation method, which can design that n _{IDs of} different terminal devices correspond to the same n but different offsets.

Take two terminal devices as an example. If the n _{IDs of} two terminal devices correspond to the same n but different offsets, it can be seen from Equation 8, that in all symbols,

Are the same, (n _ID mod X+1) is not the same, so it can be guaranteed that the u used by the two terminal devices are not the same. Therefore, in the embodiment of the present application, _{the value of n ID} can be used to avoid the same u corresponding to different terminal devices.

In addition, the n _{IDs of} different terminal devices are designed to correspond to the same n but different offsets. As time changes, the difference of u used by different terminal devices is also constantly changing, which can achieve the benefit of interference randomization. Taking formula 4 or formula 5 as an example, f ₁ and f ₂ are multiplication operations, or, taking formula 8 as an example,

And (n _ID mod X+1) is a multiplication operation. Therefore, as time changes, the difference of u used by different terminal devices is also constantly changing. In the following, taking the reference signal as the SRS as an example, an exemplary explanation is made to illustrate the change of the difference of u, which can achieve the advantage of interference randomization.

Since the number of base sequences is increased in the cell, more users can send SRS on the same time-frequency resource, so that the SRS configuration period can be shortened. As the SRS period is shortened, the degree of channel change in consecutive SRS measurement periods becomes smaller, so channel estimation time domain filtering can be used. In other words, several adjacent SRS channel estimation results can be weighted and averaged to improve the accuracy of channel estimation. In order to achieve this goal, interference randomization can be introduced to make the channel estimation errors of several adjacent times different.

For example, in a certain time unit, the roots q ₁ and q ₂ of the two base sequences in cell A are determined by the sequence group identifiers u ₁ and u ₂ _{respectively, and the roots q 3} and q 3 of the two base sequences in cell B are determined by sequence group identifiers u 1 and u 2 respectively. q ₄ is determined by sequence group identifiers u ₃ and u ₄ respectively. Suppose there are four terminal devices in the cell, denoted as UE1, UE2, UE3, UE4, and UE1 uses the base sequence _{rooted as q 1}

For channel estimation, UE2 uses the base sequence _{rooted at q 2}

For channel estimation, UE3 uses the base sequence _{rooted at q 3}

For channel estimation, UE4 uses the base sequence _{rooted at q 4}

Perform channel estimation. Assume that four UEs have flat channels on the M subcarriers of the SRS sequence and are respectively h ₁ , h ₂ , h ₃ and h ₄ . On the kth subcarrier of the M subcarriers occupied by the SRS sequence, the signal y(k) received by the network device is:

In order to estimate the channel h _{1 of} UE1, the network device may perform related operations on the received signal and the SRS sequence used by the UE1:

in,

It is the interference caused by UE2 to UE1's channel estimation, that is, the intra-cell channel estimation interference.

with

They are the interference caused by UE3 and UE4 to the channel estimation of UE1, that is, the inter-cell channel estimation interference. In the case that the channel remains basically unchanged in several consecutive SRS measurement periods and the interference of UE2, UE3, and UE4 to UE1 in these SRS measurement periods is very random, the estimated channel obtained from these SRS measurement periods can be timed. Domain filtering to obtain more accurate channel estimation results.

From the interference of UE2, UE3, and UE4 to UE1, it can be seen that the interference value between the SRS sequences of two terminal devices is determined by the difference between the roots of the two base sequences.

Therefore, in the embodiment of the present application, by designing that the n _{IDs of} different terminal devices correspond to the same n but different offsets, not only can it be ensured that different terminal devices use different u, thereby reducing intra-cell and inter-cell interference, but also different terminals The difference of u used by the device is also constantly changing, so that interference randomization can also be achieved.

For ease of understanding, as an example, the following uses a signal as a reference signal to introduce a specific embodiment in conjunction with FIG. 5. FIG. 5 is a schematic interaction diagram of a communication method 500 applicable to an embodiment of the present application. It should be understood that the method 500 and the method 400 may be used in combination, or may be used alone, which is not limited. For example, before step 410, the method 500 may be executed first to obtain the base sequence (such as the first base sequence). The method 500 may include the following steps.

510. The network device sends instruction information to the terminal device, where the instruction information is used to indicate the reference signal sequence identifier. Correspondingly, the terminal device receives the instruction information.

The network device can configure the value of the _{reference signal sequence identifier n ID} for the terminal device through the instruction information.

520. The terminal device obtains the sequence group identifier of the base sequence according to the reference signal sequence identifier.

For example, the terminal device may obtain the sequence group identifier of the base sequence according to the value of the reference signal sequence identifier and the time domain position of the reference signal.

For example, the terminal device obtains the sequence group identifier of the base sequence according to the value of the reference signal sequence identifier, the number of the time slot for sending the reference signal in the system frame, and the number of the symbol for sending the reference signal in the time slot.

Exemplarily, the terminal device identifies _{the value of the reference signal sequence ID n ID} , and the number of the time slot for sending the reference signal in the system frame

And the number l of the symbol for sending the reference signal in the time slot, and based on formula 8, the sequence group identifier u of the base sequence is obtained.

For the sequence group identifier u of the base sequence, reference may be made to the description in the method 400.

Optionally, the network equipment is the terminal equipment in the cell that uses the same base sequence to generate the reference signal sequence, and is configured with the same reference signal sequence identifier n _ID . The network equipment is the terminal equipment in the cell that uses different base sequences to generate the reference signal sequence, and the configuration is different The reference signal sequence identifier of n _ID .

For example, when two SRS base sequences are introduced in a cell, the terminal equipment in the cell can be divided into two terminal equipment groups, such as the first terminal equipment group and the second terminal equipment group, which belong to the same terminal equipment group. The terminal devices of the use the same SRS base sequence to generate the SRS sequence, and the terminal devices belonging to different terminal device groups use different SRS base sequences to generate the SRS sequence. Then, the network device may, for example, n _ID of the first terminal device group in the terminal device is a terminal device 2 are in the first group of terminal devices assigned the same n _ID,; a second network device may be a terminal device group in the terminal devices assigned the same n _ID, e.g., n _ID of the second terminal apparatus are set in the terminal apparatus 4, n _{_ID} n _ID different from the first terminal device group the terminal device and the second terminal device in the terminal device group.

It should be understood that grouping terminal devices, such as terminal devices that use the same base sequence to generate reference signal sequences in a cell, is called a terminal device group, which is only convenient for description. In actual communication or in standards, it is not limited. There is a concept of a terminal device group.

It should also be understood that the _{value of n ID} described above is only an exemplary description, and limits the protection scope of the embodiments of the present application.

_{Optionally, the network device configures X'different reference signal sequence identifiers n ID} for terminal devices using X'different base sequences in one or more cells, X'is a positive integer less than X or equal to X, and X The number of different reference signal sequence identifiers n _ID satisfies formula 9, and n _{ID_offset is} different. _{For example, the network device configures X'different reference signal sequence identifiers n ID} for terminal devices using X'different base sequences in N cells with greater interference, X'is a positive integer less than X or equal to X, and X'different reference signal sequence identifiers n _ID satisfy formula 9, and n _{ID_offset are} different.

n _ID ＝X·n+n _{ID_offset}

Formula 9

Among them, n is a non-negative integer, that is, n is an integer greater than or equal to zero. n _{ID_offset} ∈{0,1,2,...,X-1}.

For example, X=4, and cell one and cell two are two cells with greater interference. The terminal equipment in cell one uses two different base sequences, and the terminal equipment in cell two uses two different base sequences. That is to say, cell one and cell two respectively contain two terminal equipment groups, and the terminal equipment groups belonging to the same cell can be referred to as a terminal equipment group set. Among them, the terminal devices in each terminal device group use the same base sequence. _{Then, the network device can configure n ID} =0, n _ID =1, n _ID =1, and n _ID =3 for the terminal device using the four base sequences, which satisfies the condition of n=0 in formula 9. For example, the network device configures n _ID =0 and n _ID =1 for the two terminal device groups in cell one, and the network device configures n _ID = 2 and n _ID = 3 for the two terminal device groups in cell one, respectively.

It should be understood that multiple terminal device groups are referred to as a terminal device group set. For example, multiple terminal device groups in a cell are referred to as a terminal device group set for convenience of description. In actual communication or in standards, The concept of a collection of terminal equipment groups is not limited.

Based on this method, when the sequence group hopping is turned on, the base sequence used by the reference signal sent by any terminal device can be randomized, so as to randomize any number of terminals belonging to the same terminal device group set but belonging to different terminal device groups Interference between different terminal devices. In addition, it can also be ensured that any two terminal devices that belong to the same terminal device group set but belong to different terminal device groups use different base sequences, thereby avoiding strong intra-cell or inter-cell interference.

It should be understood that, in some of the above embodiments, the signal is used as the reference signal and the sequence is the reference signal sequence as an example for exemplifying description, but this does not limit the application. Any signal (such as a control signal or a synchronization signal or other signals based on Sequence of signals) are all applicable to the embodiments of this application. In other words, the above-mentioned solution regarding reference signals can be applied to any signal.

It should also be understood that, in some of the foregoing embodiments, the reference signal is used as an SRS example for description, but this does not limit the application, and any reference signal is applicable to the embodiments of the application.

It should also be understood that, in some of the foregoing embodiments, the upstream reference signal is taken as an example for exemplification, but this does not limit the application. Any signal, including but not limited to: downlink reference signal, vehicle-to-vehicle (V2V) signal, device-to-device (D2D) signal, etc., are applicable In the examples of this application. This application is not restricted.

For example, the first signal may also be a downlink reference signal. Correspondingly, the terminal device in the above embodiment can also be replaced with a network device (the terminal device in Figure 4 is replaced with a network device), and the network device can also be replaced with a terminal device (the network device in Figure 4 is replaced with a terminal device) For the content of the downlink signal, please refer to the above description of the uplink reference signal, which will not be repeated here.

Based on the above technical solution, it is possible to randomize the interference between the terminal devices that generate signals (such as reference signals) based on different base sequences between cells and within the cells, so that, under the premise of not causing strong intra-cell interference and inter-cell interference: Alleviate the problem of decreased accuracy of stationary user channel estimation due to the introduction of non-orthogonal sequences in the cell; alleviate the problem of increased inter-cell interference due to sequence expansion.

The various embodiments described in this document may be independent solutions, or may be combined according to internal logic, and these solutions fall within the protection scope of the present application. For example, the method 400 and the method 500 can be used in combination, or the method 400 and the method 500 can also be used separately. For example, in the method 500, the network device uses the same base sequence to generate a signal sequence (such as a reference signal sequence) in a cell, configures the same signal sequence identifier (such as a reference signal sequence identifier) n _ID , and the network device uses different A terminal device that generates a signal sequence (such as a reference signal sequence) based on a base sequence is configured with different signal sequence identifiers (such as a reference signal sequence identifier) n _ID . This solution can be used alone or in combination with the method 400. For another example, in method 500, the network device configures X'different signal sequence identifiers (such as reference signal sequence identifiers) n _ID for terminal devices that use X'different base sequences in N cells with greater interference, where X'is less than X or a positive integer equal to X, and X'different signal sequence identifiers (such as reference signal sequence identifiers) n _ID satisfy Formula 9. This solution can be used alone or in combination with the method 400.

It can be understood that, in the foregoing method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by It can be implemented by components (such as chips or circuits) of network devices.

Above, the method provided by the embodiment of the present application has been described in detail with reference to FIGS. 4 to 5. Hereinafter, the communication device provided by the embodiment of the present application will be described in detail with reference to FIG. 6 to FIG. 9. It should be understood that the description of the device embodiment and the description of the method embodiment correspond to each other. Therefore, for the content that is not described in detail, please refer to the above method embodiment. For the sake of brevity, it will not be repeated here.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. It can be understood that each network element, such as a transmitting end device or a receiving end device, includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions. Those skilled in the art should be aware that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules according to the foregoing method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. middle. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation. The following is an example of dividing each function module corresponding to each function.

Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application. The communication device 600 includes a transceiver unit 610 and a processing unit 620. The transceiver unit 610 can implement corresponding communication functions, and the processing unit 620 is used for data processing. The transceiving unit 610 may also be referred to as a communication interface or a communication unit.

Optionally, the communication device 600 may further include a storage unit, the storage unit may be used to store instructions and/or data, and the processing unit 620 may read the instructions and/or data in the storage unit, so that the communication device implements the aforementioned method. Examples.

The communication device 600 can be used to perform the actions performed by the terminal device in the above method embodiment. At this time, the communication device 600 can be a terminal device or a component configurable in the terminal device, and the transceiver unit 610 is used to perform the above method. In the embodiment, the processing unit 620 is configured to perform the processing-related operations on the terminal device side in the above method embodiment for the operations related to receiving and sending on the terminal device side.

Alternatively, the communication device 600 may be used to perform the actions performed by the network device in the above method embodiment. In this case, the communication device 600 may be a network device or a component configurable in the network device, and the transceiver unit 610 is used to perform the above The processing unit 620 is configured to perform the processing-related operations on the network device side in the above method embodiments for the operations related to receiving and sending on the network device side in the method embodiments.

As a design, the communication device 600 is used to perform the actions performed by the terminal device in the embodiment shown in FIG. 4, and the processing unit 620 is used to obtain the first sequence; the processing unit 620 is also used to , Generate a first signal; the transceiver unit 610, configured to: send a first signal to the network device; wherein, the first sequence is determined by the first base sequence, the first group identifier u of the first base sequence is based on the first part f ₁ and the second part f ₂ are determined by the product, the first part f _{1 is} related to the time domain position where the first signal is located, the second part f _{2 is} related to the identification n _{ID of the} first sequence, and the first group of identification u belongs to the first A group identification set, the first group identification set includes X group identifications, and X is an integer greater than 1.

As an example, the transceiver unit 610 is further configured to: receive instruction information from the network device, where the instruction information is used to indicate the identifier n _ID .

As another example, the first group identifier u of the first base sequence is determined according to the product of the first part f ₁ and the second part f ₂ , and specifically includes that u satisfies the following formula:

u=(f ₁ *f ₂ )mod X, or u=(f ₁ *f ₂ )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.

As another example, the first part f _{1 is} related to the time domain location where the first signal is located, and specifically includes: the first part f _{1 is} related to the time domain location, the identification n _ID , and X.

As another example, the first part f _{1 is} related to: time domain position, identification n _ID , and X, and includes:

The first part f ₁ and: time domain position sum

Related,

in,

Indicates rounding down.

As another example, the time domain location where the first signal is located includes:

And l, where,

As another example, the first part f _{1 is} related to the time domain position where the first signal is located, and specifically includes that the first part f ₁ satisfies the following formula:

in,

Means round down,

As another example, the second part f _{2 is} related to the identification n _{ID of the} first sequence, and specifically includes: the second part f _{2 is} related to the identification n _ID and X.

As another example, the second part f _{2 is} related to the identification n _ID and X, and specifically includes: the second part f _{2 is} related to n _ID mod X, where mod represents a remainder operation.

As another example, the second part f _{2 is} related to n _ID modX, and specifically includes that the second part f ₂ satisfies the following formula:

f ₂ = n _ID mod X+1.

The communication device 600 may implement the steps or processes performed by the terminal device in the method 400 and the method 500 according to the embodiments of the present application. The communication device 600 may include methods for executing the method 400 in FIG. 4 and the method 500 in FIG. The unit of the method performed by the terminal device. In addition, each unit in the communication device 600 and other operations and/or functions described above are used to implement the corresponding processes of the method 400 in FIG. 4 and the method 500 in FIG. 5, respectively.

Wherein, when the communication device 600 is used to execute the method 400 in FIG. 4, the transceiving unit 610 can be used to execute step 420 in the method 400, and the processing unit 620 can be used to execute step 410 in the method 400.

When the communication device 600 is used to execute the method 500 in FIG. 5, the transceiving unit 610 can be used to execute step 510 in the method 500, and the processing unit 620 can be used to execute step 520 in the method 500.

It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.

As another design, the communication device 600 is configured to perform the actions performed by the network device in the embodiment shown in FIG. 4, the transceiver unit 610 is configured to receive the first signal from the terminal device; the processing unit 620 is configured to determine The first sequence is to process the first signal according to the first sequence; where the first sequence is determined by the first base sequence, and the first group identifier u of the first base sequence is based on the first part f ₁ and the second part f Determined by the product of ₂ _{, the first part f 1 is} related to the time domain position where the first signal is located, and the second part f _{2 is} related to the identification n _{ID of the} first sequence. The first set of identification u belongs to the first set of identifications. The group identifier set includes X group identifiers, and X is an integer greater than 1.

As an example, the transceiver unit 610 is further configured to send instruction information to the terminal device, where the instruction information is used to indicate the identifier n _ID .

u=(f ₁ *f ₂ )mod X, or u=(f ₁ *f ₂ )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.

The first part f ₁ and: time domain position sum

Related,

in,

Indicates rounding down.

And l, where,

in,

Means round down,

f ₂ = n _ID mod X+1.

The communication device 600 may implement the steps or processes executed by the network device in the method 400 and the method 500 according to the embodiments of the present application. The communication device 600 may include methods for executing the method 400 in FIG. 4 and the method 500 in FIG. 5 The unit of the method performed by the network device. In addition, each unit in the communication device 600 and other operations and/or functions described above are used to implement the corresponding processes of the method 400 in FIG. 4 and the method 500 in FIG. 5, respectively.

Wherein, when the communication device 600 is used to execute the method 400 in FIG. 4, the transceiver unit 610 may be used to execute step 420 in the method 400.

When the communication device 600 is used to execute the method 500 in FIG. 5, the transceiving unit 610 may be used to execute step 510 in the method 500.

The processing unit 620 in the above embodiment may be implemented by at least one processor or processor-related circuit. The transceiving unit 610 may be implemented by a transceiver or a transceiver-related circuit. The transceiving unit 610 may also be referred to as a communication unit or a communication interface. The storage unit may be realized by at least one memory.

As shown in FIG. 7, an embodiment of the present application also provides a communication device 700. The communication device 700 includes a processor 710, which is coupled to a memory 720, the memory 720 is used to store computer programs or instructions and/or data, and the processor 710 is used to execute computer programs or instructions and/or data stored in the memory 720. The method in the above method embodiment is caused to be executed.

Optionally, the communication device 700 includes one or more processors 710.

Optionally, as shown in FIG. 7, the communication device 700 may further include a memory 720.

Optionally, the memory 720 included in the communication device 700 may be one or more.

Optionally, the memory 720 may be integrated with the processor 710 or provided separately.

Optionally, as shown in FIG. 7, the communication device 700 may further include a transceiver 730, and the transceiver 730 is used for receiving and/or transmitting signals. For example, the processor 710 is configured to control the transceiver 730 to receive and/or send signals.

As a solution, the communication device 700 is used to implement the operations performed by the terminal device in the above method embodiments.

For example, the processor 710 is used to implement the processing-related operations performed by the terminal device in the above method embodiment, and the transceiver 730 is used to implement the transceiving-related operations performed by the terminal device in the above method embodiment.

As another solution, the communication device 700 is used to implement the operations performed by the network device in the above method embodiments.

For example, the processor 710 is used to implement the processing-related operations performed by the network device in the above method embodiment, and the transceiver 730 is used to implement the transceiving-related operations performed by the network device in the above method embodiment.

The embodiment of the present application also provides a communication device 800, and the communication device 800 may be a terminal device or a chip. The communication device 800 may be used to perform operations performed by the terminal device in the foregoing method embodiments.

When the communication device 800 is a terminal device, FIG. 8 shows a simplified schematic diagram of the structure of the terminal device. As shown in Figure 8, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 8. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device.

As shown in FIG. 8, the terminal device includes a transceiving unit 810 and a processing unit 820. The transceiver unit 810 may also be referred to as a transceiver, a transceiver, a transceiver, or the like. The processing unit 820 may also be referred to as a processor, a processing board, a processing module, a processing device, and so on.

Optionally, the device for implementing the receiving function in the transceiving unit 810 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 810 can be regarded as the sending unit, that is, the transceiving unit 810 includes a receiving unit and a sending unit. The transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

For example, in an implementation manner, the processing unit 820 is configured to perform processing actions on the terminal device side in FIG. 4. For example, the processing unit 820 is used to perform the processing steps in step 410 in FIG. 4; the transceiving unit 810 is used to perform the transceiving operations in step 420 in FIG.

For another example, in an implementation manner, the processing unit 820 is configured to perform the processing steps in step 520 in FIG. 5; the transceiving unit 810 is configured to perform the transceiver operations in step 510 in FIG. 5.

It should be understood that FIG. 8 is only an example and not a limitation, and the foregoing terminal device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 8.

When the communication device 800 is a chip, the chip includes a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input/output circuit or a communication interface; the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip.

The embodiment of the present application also provides a communication device 900, and the communication device 900 may be a network device or a chip. The communication device 900 can be used to perform operations performed by a network device in the foregoing method embodiments.

When the communication device 900 is a network device, for example, it is a base station. Figure 9 shows a simplified schematic diagram of the base station structure. The base station includes part 910 and part 920. The 910 part is mainly used for the transmission and reception of radio frequency signals and the conversion between radio frequency signals and baseband signals; the 920 part is mainly used for baseband processing and control of the base station. The part 910 can generally be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver. The part 920 is usually the control center of the base station, and may generally be referred to as a processing unit, which is used to control the base station to perform the processing operations on the network device side in the foregoing method embodiments.

The transceiver unit of part 910 may also be called a transceiver or a transceiver, etc., which includes an antenna and a radio frequency circuit, and the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device for implementing the receiving function in part 910 can be regarded as the receiving unit, and the device for implementing the sending function as the sending unit, that is, the part 910 includes the receiving unit and the sending unit. The receiving unit may also be called a receiver, a receiver, or a receiving circuit, and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.

Part 920 may include one or more single boards, and each single board may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If there are multiple boards, each board can be interconnected to enhance processing capabilities. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processing at the same time. Device.

For example, in an implementation manner, the transceiving unit of part 910 is used to perform the steps related to transceiving and receiving performed by the network device in the embodiment shown in FIG. 4; the part 920 is used to perform the steps performed by the network device in the embodiment shown in FIG. 4 The processing related steps.

For example, in another implementation manner, the transceiving unit of part 910 is used to perform the steps related to transceiving performed by the network device in the embodiment shown in FIG. 5; Steps related to the processing performed.

It should be understood that FIG. 9 is only an example and not a limitation, and the foregoing network device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 9.

When the communication device 900 is a chip, the chip includes a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input/output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.

The embodiment of the present application also provides a computer-readable storage medium on which is stored computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the foregoing method embodiment.

For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.

The embodiments of the present application also provide a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.

An embodiment of the present application also provides a communication system, which includes the network device and the terminal device in the above embodiment.

Those skilled in the art can clearly understand that for the convenience and conciseness of description, the explanations and beneficial effects of related content in any communication device provided above can be referred to the corresponding method embodiments provided above, and will not be omitted here. Go into details.

In the embodiments of the present application, the terminal device or the network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. Among them, the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system at the operating system layer can be any one or more computer operating systems that implement business processing through processes, such as Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems. The application layer can include applications such as browsers, address books, word processing software, and instant messaging software.

The embodiment of this application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of this application, as long as it can run a program that records the code of the method provided in the embodiment of this application, according to the method provided in the embodiment of this application. Just communicate. For example, the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

Various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" used herein can encompass a computer program accessible from any computer-readable device, carrier, or medium.

The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. Usable media (or computer-readable media) can include, but are not limited to: magnetic media or magnetic storage devices (for example, floppy disks, hard disks (such as mobile hard disks), magnetic tapes), optical media (for example, optical disks, compact discs). , CD), digital versatile disc (DVD, etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.) ), or semiconductor media (such as solid state disks (SSD), U disks, read-only memory (ROM), random access memory (RAM), etc.) that can store programs The medium of the code.

The various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

It should be understood that the processor mentioned in the embodiments of this application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM). For example, RAM can be used as an external cache. As an example and not a limitation, RAM may include the following various forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM) , Double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct RAM Bus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated in the processor.

It should also be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the above-mentioned units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement the solution provided in this application.

In addition, the functional units in the various embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.

When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. For example, the computer can be a personal computer, a server, or a network device. Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center. Regarding the computer-readable storage medium, reference may be made to the above description.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, All should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims and specification.

Claims

A method of communication, characterized in that it includes:

Get the first sequence;

Generating a first signal according to the first sequence;

Sending the first signal to a network device;

Wherein, the first sequence is determined by a first base sequence, and the first group identifier u of the first base sequence is determined according to the product of the first part f 1 and the second part f 2 , and the first part f 1 is related to the time domain position where the first signal is located, the second part f 2 is related to the identifier n ID of the first sequence, the first group identifier u belongs to the first group identifier set, and the first A set of IDs includes X group IDs, and X is an integer greater than 1.
The method according to claim 1, wherein before said acquiring the first sequence, the method further comprises:

Receiving instruction information from the network device, where the instruction information is used to indicate the identifier n ID .
The method of claim 1 or claim 2, wherein a first group identifier of the first base sequence u is determined by the product of the first portion and the second portion f 1 f 2, in particular comprising the u satisfies The following formula:

u=(f 1 *f 2 )mod X, or u=(f 1 *f 2 )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.
The method according to any one of claims 1 to 3, wherein the first part f 1 is related to a time domain position where the first signal is located, and specifically includes:

The first part f 1 is related to: the time domain position, the identifier n ID , and X.
The method according to claim 4, wherein the first part f 1 is related to: the time domain position, the identifier n ID , and X, and includes:

The first part f 1 and: the time domain position and
Related,

in,
Indicates rounding down.
The method according to any one of claims 1 to 5, wherein the time domain position where the first signal is located comprises:
And l, where,
Represents the time slot number in the system frame, and l represents the position of the symbol sending the first signal in the current time slot.
The method according to claim 6, wherein the first part f 1 is related to the time domain position where the first signal is located, and specifically includes that the first part f 1 satisfies the following formula:

in,

Among them, Z is an integer greater than 1 or equal to 1; c(i) is a pseudo-random sequence, and the initial seed of c(i) is

Means round down,
Represents the number of symbols in a time slot; mod represents the remainder operation.
The method according to any one of claims 1 to 7, wherein the second part f 2 is related to the identification n ID of the first sequence, and specifically includes:

The second part f 2 is related to the identifier n ID and X.
The method according to claim 8, wherein the second part f 2 is related to the identifier n ID and X, and specifically includes:

The second part f 2 is related to n ID mod X, where mod represents a remainder operation.
The method according to claim 9, wherein the second part f 2 is related to n ID mod X, and specifically includes that the second part f 2 satisfies the following formula:

f 2 = n ID mod X+1.
A method of communication, characterized in that it comprises:

Receiving the first signal from the terminal device;

Determine a first sequence, and process the first signal according to the first sequence;

Wherein, the first sequence is determined by a first base sequence, and the first group identifier u of the first base sequence is determined according to the product of the first part f 1 and the second part f 2 , and the first part f 1 is related to the time domain position where the first signal is located, the second part f 2 is related to the identifier n ID of the first sequence, the first group identifier u belongs to the first group identifier set, and the first A set of IDs includes X group IDs, and X is an integer greater than 1.
The method according to claim 11, wherein before the receiving the first signal from the terminal device, the method further comprises:

Send instruction information to the terminal device, where the instruction information is used to indicate the identifier n ID .
A method according to claim 11 or claim 12, wherein a first group identifier of the first base sequence u is determined by the product of the first portion and the second portion f 1 f 2, in particular comprising the u satisfies The following formula:

u=(f 1 *f 2 )mod X, or u=(f 1 *f 2 )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.
The method according to any one of claims 11 to 13, wherein the first part f 1 is related to a time domain position where the first signal is located, and specifically includes:

The first part f 1 is related to: the time domain position, the identifier n ID , and X.
The method according to claim 14, wherein the first part f 1 is related to: the time domain position, the identifier n ID , and X, and includes:

The first part f 1 and: the time domain position and
Related,

in,
Indicates rounding down.
The method according to any one of claims 11 to 15, wherein the time domain position comprises:
And l, where,
Represents the time slot number in the system frame; 1 represents the position of the symbol sending the first signal in the current time slot.
The method according to claim 16, wherein the first part f 1 is related to the time domain position where the first signal is located, and specifically includes that the first part f 1 satisfies the following formula:

in,

Among them, Z is an integer greater than 1 or equal to 1; c(i) is a pseudo-random sequence, and the initial seed of c(i) is

Means round down,
Represents the number of symbols in a time slot; mod represents the remainder operation.
The method according to any one of claims 11 to 17, wherein the second part f 2 is related to the identifier n ID of the first sequence, and specifically includes:

The second part f 2 is related to the identifier n ID and X.
The method according to claim 18, wherein the second part f 2 is related to the identifier n ID and X, and specifically includes:

The second part f 2 is related to n ID mod X, where mod represents a remainder operation.
The method according to claim 19, wherein the second part f 2 is related to n ID mod X, and specifically includes that the second part f 2 satisfies the following formula:

f 2 = n ID mod X+1.
A communication device, characterized in that it comprises:

A processing unit for obtaining the first sequence;

The processing unit is further configured to generate a first signal according to the first sequence;

A transceiver unit, configured to send the first signal to a network device;

Wherein, the first sequence is determined by a first base sequence, and the first group identifier u of the first base sequence is determined according to the product of the first part f 1 and the second part f 2 , and the first part f 1 is related to the time domain position where the first signal is located, the second part f 2 is related to the identifier n ID of the first sequence, the first group identifier u belongs to the first group identifier set, and the first A set of IDs includes X group IDs, and X is an integer greater than 1.
The device according to claim 21, wherein the transceiver unit is further configured to:

Receiving instruction information from the network device, where the instruction information is used to indicate the identifier n ID .
A communication device, characterized in that it comprises:

The transceiver unit is used to receive the first signal from the terminal device;

A processing unit, configured to determine a first sequence, and process the first signal according to the first sequence;

Wherein, the first sequence is determined by a first base sequence, and the first group identifier u of the first base sequence is determined according to the product of the first part f 1 and the second part f 2 , and the first part f 1 is related to the time domain position where the first signal is located, the second part f 2 is related to the identifier n ID of the first sequence, the first group identifier u belongs to the first group identifier set, and the first A set of IDs includes X group IDs, and X is an integer greater than 1.
The device according to claim 23, wherein the transceiver unit is further configured to:

Send instruction information to the terminal device, where the instruction information is used to indicate the identifier n ID .
The apparatus of one of claims 21 to 24 claims, characterized in that a first group identifier of the first base sequence u is determined by the product of the first portion and the second portion f 1 f 2, in particular comprising The u satisfies the following formula:

u=(f 1 *f 2 )mod X, or u=(f 1 *f 2 )mod(Y)-1

Among them, mod represents the remainder operation, Y=X+1.
The apparatus according to any one of claims 21 to 24, wherein the first part f 1 is related to a time domain position where the first signal is located, and specifically includes:

The first part f 1 is related to: the time domain position, the identifier n ID , and X.
The apparatus according to claim 26, wherein the first part f 1 is related to: the time domain position, the identifier n ID , and X, and includes:

The first part f 1 and: the time domain position and
Related,

in,
Indicates rounding down.
The apparatus according to any one of claims 21 to 27, wherein the time domain position where the first signal is located comprises:
And l, where,
Represents the time slot number in the system frame, and l represents the position of the symbol sending the first signal in the current time slot.
The apparatus according to claim 28, wherein the first part f 1 is related to the time domain position where the first signal is located, and specifically includes that the first part f 1 satisfies the following formula:

in,

Among them, Z is an integer greater than 1 or equal to 1; c(i) is a pseudo-random sequence, and the initial seed of c(i) is

Means round down,
Represents the number of symbols in a time slot; mod represents the remainder operation.
The device according to any one of claims 21 to 29, wherein the second part f 2 is related to the identification n ID of the first sequence, and specifically includes:

The second part f 2 is related to the identifier n ID and X.
The device according to claim 30, wherein the second part f 2 is related to the identifier n ID and X, and specifically includes:

The second part f 2 is related to n ID mod X, where mod represents a remainder operation.
The apparatus according to claim 31, wherein the second part f 2 is related to n ID mod X, and specifically includes that the second part f 2 satisfies the following formula:

f 2 = n ID mod X+1.
An apparatus, characterized by comprising: one or more processors, the one or more processors are coupled with a memory, and the one or more processors are configured to execute the one described in any one of claims 1 to 20 Methods.
A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a computer, the computer realizes any one of claims 1 to 20 The method described.
A computer program product, the computer program product contains instructions, characterized in that, when the instructions are run on a computer, the computer realizes the method according to any one of claims 1 to 20.
A chip, characterized by comprising: one or more processors, used to call and execute instructions stored in the memory from the memory, so that the method according to any one of claims 1 to 20 is executed .