CN108347323A

CN108347323A - A kind of RS generates, method of reseptance and terminal, base station

Info

Publication number: CN108347323A
Application number: CN201710061322.0A
Authority: CN
Inventors: 梁津垚; 纪刘榴; 李元杰; 秦熠; 吴宁; 李新县
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2018-07-31
Anticipated expiration: 2037-01-25
Also published as: CN108347323B; WO2018137688A1

Abstract

This application discloses a kind of RS generations, method of reseptance and terminal, base stations, terminal can determine reference signal sequence initialization value according to the first parameter set, and according to reference signal sequence initialization value, generate RS sequences, include time domain in the first parameter set used in the embodiment of the present application, and the symbol numbers that the time quantum is included are less than the symbol numbers that a slot is included.RS sequences provided by the embodiments of the present application can be adapted for the communication system in 5G or future.

Description

RS generating and receiving method, terminal and base station

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to an RS generating and receiving method, a terminal, and a base station.

Background

In Long Term Evolution (LTE) communication, a basic unit of scheduling is a slot (i.e., one slot), where the slot is defined as: . The Reference Signal (RS) is generated by using RS equations defined by the LTE protocol, for example, Channel State information Reference Signal (CSI-RS), Demodulation Reference Signal (DMRS), Cell Reference Signal (CRS), and frequency hopping of uplink RS, and these RS generation equations all use slot numbers as one of parameters.

Currently, mobile communication has been developed to 5G (e.g., New Radio (NR)), in which a scheduled time unit is no longer a slot, but other time units, such as a mini-slot, where one mini-slot contains a smaller number of symbols than the slot, one slot may be divided into multiple mini-slots, and multiple mini-slots may share one RS.

If the existing generation formula of the RS in LTE is directly applied to 5G, the following problems will occur: the RS sequences within one slot are identical, which affects interference randomization.

In summary, currently, there is no method for generating RS sequences in 5G communication.

Disclosure of Invention

The application provides an RS generating and receiving method, a terminal and a base station, which are used for providing an RS sequence generating mode suitable for a 5G communication system.

In a first aspect, the present application provides a method for RS generation, where the method includes:

a terminal determines a reference signal sequence initialization value according to a first parameter set, wherein the first parameter set comprises the number of a time unit, and the number of symbols contained in the time unit is less than the number of symbols contained in one slot;

and the terminal generates an RS sequence according to the reference signal sequence initialization value.

In the embodiment of the present application, the terminal may determine a reference signal sequence initialization value according to a first parameter set, and generate an RS sequence according to the reference signal sequence initialization value, and in particular, may be applied to generation of a CSI-RS sequence, generation of a CRS sequence, generation of a DMRS sequence, and generation of other RS sequences, where parameters included in the first parameter set may refer to parameters used in a corresponding RS sequence generation formula currently existing, for example, for generation of a CSI-RS sequence, a first parameter set used may refer to a parameter set in a formula used in generation of a CSI-RS sequence in LTE, but different from a parameter set used in generation of a CSI-RS sequence in LTE, the first parameter set used in the embodiment of the present application includes a time number, and the number of symbols included in the time unit is less than the number of symbols included in one slot, however, the time unit used when the CSI-RS sequence is generated in LTE is the slot itself, and because the time unit does not use the slot any more but uses a time unit with a number of symbols smaller than the number of symbols contained in the slot in a 5G communication or future 5G and later communication systems, in order to adapt to a communication system, the RS sequence can be correctly generated.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the number of the time unit is determined according to a number of one time unit that includes an RS time domain position, or is determined according to numbers of at least two time units that share the same RS time domain position.

In a communication system, one RS time domain position may be exclusively occupied by one time unit or shared by multiple time units, and when each time unit independently corresponds to one RS time domain position, the number of the time unit in the first parameter set in this embodiment is equal to the number of the time unit including the RS time domain position; when multiple time units (at least two) share one RS time domain position, then the time unit number in the first parameter set can be determined from the multiple time unit numbers.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the number of the time unit according to at least two time unit numbers sharing a same RS time domain position, includes: the number of the time unit is equal to the smallest time unit number of the at least two time unit numbers, or the number of the time unit is equal to the largest time unit number of the at least two time unit numbers.

When there are multiple time units sharing the same RS time domain position, there are many options for determining the time unit number in the first parameter set, for example, a mini-slot is used to represent the time unit in the embodiment of the present application, to represent the number of the time unit in the first parameter set in the embodiment of the present application, and then n is used_sMin (mini-slot #), where mini-slot # represents a set of numbers of all time units sharing the same RS time domain position, or n_sMax (mini-slot #), or n_sMin (mini-slot # odd +1, mini-slot # even), or n_sMax (mini-slot # odd +1, mini-slot # even), or n_sMin (mini-slot # odd, mini-slot # even +1), or n_sMax (mini-slot # odd +1, mini-slot # even +1), or may also be n_sMin (mini-slot # odd-1, mini-slot # even), or n_sMax (mini-slot # odd-1, mini-slot # even), where mini-slot # odd represents the odd-numbered set of time cells, mini-slot # odd +1 represents adding 1 to the odd-numbered each time cell in the odd-numbered set of time cells, and similarly, mini-slot # even represents the even-numbered set of time cells, and mini-slot # even +1 represents adding 1 to the even-numbered each time cell in the even-numbered set of time cells, for example, by n_sGiven the time units currently sharing the same RS time domain position, time unit 0, time unit 1, time unit 2, and time unit 3, then min-slot # odd is {1, 3}, and min-slot # even is {0, 2}, so that n is the equation min (min-slot # odd +1, min-slot # even)_sMin (2, 4, 0, 2) ═ 0, the calculation manner is similar for other formulas, which is not described herein again, and in the embodiment of the present application, the calculation manners for multiple time units according to the time domain position sharing the same RS time domain position are not described herein againThe method for obtaining the event unit number in the first parameter set by numbering is not limited to the above several manners, which are only examples, and any method that can obtain the time unit number in the first parameter set according to the numbers of a plurality of time units sharing the same RS time domain position can be used in the embodiments of the present application.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the terminal receives signaling from a base station, where the signaling includes a number n used for indicating the time unit_sThe information of (1).

Thus, the terminal directly receives the signaling sent by the base station, where the signaling includes a time unit number in a first parameter set used by the terminal, where the signaling may be Radio Resource Control (RRC) signaling configuration or Downlink Control Information (DCI) signaling configuration. For example, the signaling carries a parameter rsgenerartastlotnumber and a specific value corresponding to the parameter, where the value is used to indicate a number of a time unit, for example, a value range of the value is any integer from 0 to 59, 59 is an example, and indicates slot numbers 0 to 19 (in a radio frame) in LTE, if one slot includes 3 time units, there are 60 time units in total, and if the base station indicates a specific number through the signaling, for example, indicates that rsgenerartastlotnumber is 20, then the time unit number in the first parameter set is 20. Therefore, after the base station issues the signaling, the terminal knows n used by RS generation on a certain mini-slot_sWhat is the value of (a).

With reference to the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the terminal receives a signaling from a base station, where the signaling includes information indicating at least two time unit numbers sharing a same RS time domain position.

Thus, the terminal can know which time units share the same RS time domain position according to the received signaling, and further determine the number of the time unit in the first parameter set according to the numbers of the time units, for example, the number of the time unit, for example, (0, 1, 2, 3), is carried in the signaling sent by the base station to the terminal, and then the terminal obtains the number 0, 1, 2, 3 of the time unit from the signaling after receiving the signaling, and then obtains the parameter value of the number of the time unit in the first parameter set through operation.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the first parameter set further includes a number of time units sharing an RS sequence in one or more slots.

In a second aspect, an embodiment of the present application provides a terminal, where the terminal includes a processor configured to:

determining a reference signal sequence initialization value according to a first parameter set, wherein the first parameter set comprises the number of a time unit, and the number of symbols contained in the time unit is less than the number of symbols contained in one slot;

and generating an RS sequence according to the reference signal sequence initialization value.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the number of the time unit is determined according to a number of one time unit that includes an RS time domain position, or is determined according to numbers of at least two time units that share the same RS time domain position.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the determining, by the number of the time unit according to at least two time unit numbers sharing the same RS time domain position includes:

the number of the time unit is equal to the smallest time unit number of the at least two time unit numbers, or the number of the time unit is equal to the largest time unit number of the at least two time unit numbers.

With reference to the second aspect, in a third possible implementation manner of the second aspect, the terminal further includes a transceiver, configured to: receiving signaling from a base station, the signaling including information indicating a number of the time unit.

With reference to the first possible implementation manner of the second aspect or the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the terminal further includes a transceiver configured to: receiving signaling from a base station, the signaling including information indicating at least two time unit numbers sharing a same RS time domain position.

With reference to the second aspect, in a fifth possible implementation manner of the second aspect, the first parameter set further includes the number of time units sharing an RS sequence in one or more slots.

In one possible design, the terminal provided in this application may include a module for performing the corresponding terminal station behavior in the method design of the first aspect. The modules may be software and/or hardware.

In a third aspect, an embodiment of the present application provides a method for receiving a reference signal RS, where the method includes:

a terminal receives a signaling from a base station, wherein the signaling is used for indicating RS time domain positions used by one or at least two time units, and the number of symbols of the time units is less than that of symbols of one slot;

and the terminal receives the RS from the base station according to the signaling.

In this way, the terminal can receive signaling from the base station, so that the specific symbol position of the mapped RS is known according to the signaling, and receive the RS from the obtained symbol position. Thereby achieving correct reception of the RS from the base station.

Alternatively, the protocol may predefine symbol positions of the RS for multiple time units exclusively or sharing the same RS time domain position, so that the terminal may receive the RS from the symbol positions predefined by the protocol.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the signaling is used to indicate RS time domain positions used by one or at least two time units, and includes:

the signaling comprises information of a symbol K, or comprises information of a time unit L and information of a symbol P on the time unit L;

the information of the symbol K is information of a symbol corresponding to an RS time domain position shared by N continuous or discontinuous time units, the time unit L is the L-th time unit in the N continuous or discontinuous time units sharing the same RS time domain position, the symbol P is the P-th symbol in the L-th time unit, K is an integer, N is a positive integer, L is a positive integer not greater than N, and P is the number of symbols not greater than the time units.

In one possible design, consecutive or non-consecutive N time units may share an RS sequence. N may have its value predefined in the protocol, or the signaling sent by the base station to the terminal may contain information of N, such as a value indicating N.

In one possible design, the terminal may obtain channel information to be measured according to the received RS sequence and the locally generated RS sequence.

In a fourth aspect, an embodiment of the present application provides a terminal, including a processor, configured to receive a signaling from a base station, where the signaling is used to indicate RS time domain positions used by one or at least two time units, and the number of symbols of a time unit is less than that of symbols of one slot;

a transceiver for receiving an RS from the base station according to the signaling.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the signaling is used to indicate RS time domain positions used by one or at least two time units, and includes: the signaling comprises information of a symbol K, or comprises information of a time unit L and information of a symbol P on the time unit L;

In one possible design, the terminal provided in this application may include a module for performing the corresponding terminal station behavior in the method design of the third aspect. The modules may be software and/or hardware.

In a fifth aspect, an embodiment of the present application provides a method for sending a reference signal RS, where the method includes:

a base station determines a reference signal sequence initialization value according to a first parameter set, wherein the first parameter set comprises time unit numbers, and the number of symbols contained in a time unit is less than that of symbols contained in a slot;

and the base station generates an RS sequence according to the reference signal sequence initialization value.

In one possible design, after the base station generates the RS sequence, a reference signal is generated according to the RS sequence, for example, the reference signal sequence is subjected to mapping and other operations to generate a reference signal, and the generated reference signal is sent to the terminal.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the number of the time unit is determined according to a number of one time unit that includes an RS time domain position, or is determined according to numbers of at least two time units that share the same RS time domain position.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the determining, by the number of the time unit according to at least two time unit numbers sharing the same RS time domain position includes:

With reference to the fifth aspect, in a third possible implementation manner of the fifth aspect, the first parameter set further includes the number of time units sharing an RS sequence in one or more slots.

In a sixth aspect, an embodiment of the present application provides a base station, including:

a processor, configured to determine a reference signal sequence initialization value according to a first parameter set, where the first parameter set includes a time unit number, and a number of symbols included in the time unit is less than a number of symbols included in one slot;

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the number of the time unit is determined according to a number of one time unit that includes an RS time domain position, or is determined according to numbers of at least two time units that share the same RS time domain position.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the determining, by the number of the time unit according to at least two time unit numbers sharing the same RS time domain position includes:

With reference to the sixth aspect, in a third possible implementation manner of the sixth aspect, the first parameter set further includes the number of time units sharing an RS sequence in one or more slots.

In one possible design, the terminal provided in the present application may include a module for performing the behavior correspondence of the terminal station in the method design of the fifth aspect. The modules may be software and/or hardware.

In a seventh aspect, an embodiment of the present application provides a method for generating a reference signal RS, where the method includes:

the first equipment determines a reference signal sequence initialization value according to a second parameter set, wherein the second parameter set comprises a first parameter, the first parameter is a parameter related to the number of a time unit, and the number of the time unit is related to the type of the time unit; or, the second parameter set includes a second parameter and a third parameter, the second parameter is a parameter related to the type of the time unit, and the third parameter is a parameter related to the number of the time unit; the number of symbols contained in one time unit is one or more, and the number of symbols contained in different types of time units is different;

and the first equipment generates an RS sequence according to the reference signal sequence initialization value.

In this embodiment, the first device may determine a reference signal sequence initialization value according to a second parameter set, and generate an RS sequence according to the reference signal sequence initialization value, where the second parameter set includes a first parameter, or includes a second parameter and a third parameter, where the first parameter is a parameter related to the number of a time unit, the second parameter is a parameter related to the type of the time unit, and the third parameter is a parameter related to the number of the time unit, so that the RS sequence may be obtained based on the number of the time unit or based on the type of the time unit and the number of the time unit.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the number of the time unit is related to a type of the time unit, and the method includes:

and the first equipment determines the number of the time unit according to the type of the time unit.

The type of the time unit is determined according to the number of symbols included in the time unit, for example, if the time unit includes 7 symbols or 14 symbols, the time unit including 7 symbols is of one type, and the time unit including 14 symbols is of one type.

With reference to the first possible implementation manner of the seventh aspect, in a second possible implementation manner of the seventh aspect, the determining, by the first device, a number of the time unit according to a type of the time unit includes:

the first equipment determines the number of the time unit according to the number of the reference time unit corresponding to the time unit;

the type of the reference time unit is a time unit type configured by signaling or predefined, and the reference time unit is a time unit corresponding to the type of the reference time unit.

The reference time unit is a time unit including a specific number of symbols, for example, a time unit including 7 symbols is used as a reference time.

With reference to the second possible implementation manner of the seventh aspect, in a third possible implementation manner of the seventh aspect, determining the number of the time unit according to the number of the reference time unit corresponding to the time unit includes:

the number of the time unit is the Q-th number of a reference time unit corresponding to the time unit;

q is a positive integer, and Q is configured or predefined on the network side.

With reference to the second possible implementation manner of the seventh aspect, in a fourth possible implementation manner of the seventh aspect, determining the number of the time unit according to the number of the reference time unit corresponding to the time unit includes:

the time unit corresponds to one or more sub-units, each sub-unit corresponds to a reference time unit, and each sub-unit has the number of the corresponding reference time unit.

In this way, a time unit can be divided into a plurality of sub-units according to a reference unit, each sub-unit comprises the same number of symbols as that of a reference time unit, and thus a time unit can correspond to a plurality of numbers, each number representing the number of a sub-unit of the time unit.

With reference to the seventh aspect, in a fifth possible implementation manner of the seventh aspect, the third parameter is a parameter related to a number of a time unit, and includes:

the third parameter is the number of the time unit, the number of the time unit is sequentially numbered by natural numbers, or,

the third parameter is determined according to the number of the time unit, the number of symbols corresponding to the type of the time unit and the number of symbols corresponding to the type of a reference time unit, the number of the time unit is determined according to the number of symbols corresponding to the type of the time unit and a number interval, the number interval is determined according to the type of the time unit and the type of the reference time unit, and the type of the reference time unit is configured or predefined by a network side;

the second parameter is a parameter related to the type of the time unit, and includes:

and the first equipment determines the second parameter according to the type of the time unit.

With reference to the seventh aspect or any one of the first possible implementation manner to the fifth possible implementation manner of the seventh aspect, in a sixth possible implementation manner of the seventh aspect, the first device is a network side device, a terminal, or a relay.

In an eighth aspect, an embodiment of the present application provides an apparatus, which may be a terminal or a base station, including:

a processor, configured to determine a reference signal sequence initialization value according to a second parameter set, where the second parameter set includes a first parameter, the first parameter is a parameter related to a number of a time unit, and the number of the time unit is related to a type of the time unit; or, the second parameter set includes a second parameter and a third parameter, the second parameter is a parameter related to the type of the time unit, and the third parameter is a parameter related to the number of the time unit; the number of symbols contained in one time unit is one or more, and the number of symbols contained in different types of time units is different;

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the processor is specifically configured to:

the number of the time unit is determined according to the type of the time unit.

With reference to the first possible implementation manner of the eighth aspect, in a second possible implementation manner of the eighth aspect, the processor is specifically configured to:

determining the number of the time unit according to the number of the reference time unit corresponding to the time unit;

With reference to the second possible implementation manner of the eighth aspect, in a third possible implementation manner of the eighth aspect, determining the number of the time unit according to the number of the reference time unit corresponding to the time unit includes:

q is a positive integer, and Q is configured or predefined on the network side.

With reference to the second possible implementation manner of the eighth aspect, in a fourth possible implementation manner of the eighth aspect, the determining, according to the number of the reference time unit corresponding to the time unit, the number of the time unit includes:

With reference to the eighth aspect, in a fifth possible implementation manner of the eighth aspect, the third parameter is a parameter related to the number of time units, and includes:

the processor is specifically configured to: and determining the second parameter according to the type of the time unit.

With reference to the eighth aspect or any one of the first possible implementation manner to the fifth possible implementation manner of the eighth aspect, in a sixth possible implementation manner of the eighth aspect, the device is a network side device, a terminal, or a relay.

In a possible design, the first device provided in this application may include a module configured to perform a corresponding terminal station behavior in the method design of the seventh aspect. The modules may be software and/or hardware.

In a ninth aspect, an embodiment of the present application provides a method for generating a reference signal RS, where the method includes:

the first equipment determines a reference signal sequence initialization value according to the type of a time unit, wherein the type of different time units comprises different numbers of symbols, and the number of symbols in each time unit is one or more;

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the determining, by the first device, a reference signal sequence initialization value according to a type of a time unit includes:

the first equipment determines the number of the time unit according to the type of the time unit;

the first equipment determines a reference signal sequence initialization value according to the number of the time unit; or, the first device determines the reference signal sequence initialization value according to the type of the time unit and the number of the time unit.

With reference to the first possible implementation manner of the ninth aspect, in a second possible implementation manner of the ninth aspect, the determining, by the first device, a number of the time unit according to the type of the time unit includes:

and the first equipment determines the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit.

With reference to the first possible implementation manner of the ninth aspect, in a third possible implementation manner of the ninth aspect, the determining, by the first device, the number of the time unit according to the type of the time unit includes:

the first equipment determines the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit and the number interval;

the number interval is determined by the first device according to the number of symbols corresponding to the type of the time unit and the number of symbols corresponding to the type of a reference time unit, and the type of the reference time unit is configured or predefined on the base station side.

With reference to the second possible implementation manner or the third possible implementation manner of the ninth aspect, in a fourth possible implementation manner of the ninth aspect, the determining, by the first device, a reference signal sequence initialization value according to the type of the time unit and the number of the time unit includes:

the first device determines a third parameter according to the number of the time unit, or the first device determines the third parameter according to the number of the time unit, the number of symbols corresponding to the type of the time unit and the number of symbols corresponding to the type of a reference time unit, wherein the first parameter is a parameter related to the number of the time unit, and the type of the reference time unit is configured or predefined at the base station side;

the first equipment determines a second parameter according to the type of the time unit;

and the first equipment determines a reference signal sequence initialization value according to the second parameter and the third parameter.

With reference to the first possible implementation manner of the ninth aspect, in a fifth possible implementation manner of the ninth aspect, the determining, by the first device, the number of the time unit according to the type of the time unit includes:

the first equipment determines the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit and the number of the symbols corresponding to the type of the reference time unit;

wherein the type of the reference time unit is configured or predefined on the base station side.

With reference to the fifth possible implementation manner of the ninth aspect, in a sixth possible implementation manner of the ninth aspect, the time unit corresponds to one or more sub-units, each sub-unit corresponds to one reference time unit, and each sub-unit has a number of the corresponding reference time unit.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the ninth aspect, in a seventh possible implementation manner of the ninth aspect, the determining, by the first device, a reference signal sequence initialization value according to a number of a time unit includes:

the first equipment determines a first parameter according to the number of a time unit, wherein the first parameter is a parameter related to the number of the time unit;

and the first equipment determines a reference signal sequence initialization value according to the first parameter.

With reference to the ninth aspect or the first possible implementation manner to the seventh possible implementation manner of the ninth aspect, in an eighth possible implementation manner of the ninth aspect, the first device is a base station, a terminal, or a relay.

In a tenth aspect, an embodiment of the present application provides an apparatus, which may be a terminal or a base station or a relay, including:

the processor is used for determining a reference signal sequence initialization value according to the type of the time unit, wherein the types of different time units contain different symbol numbers, and the symbol number contained in the time unit is one or more; and generating an RS sequence according to the reference signal sequence initialization value.

With reference to the tenth aspect, in a first possible implementation manner of the tenth aspect, the processor is specifically configured to:

determining the number of the time unit according to the type of the time unit;

determining a reference signal sequence initialization value according to the number of the time unit; or, the first device determines the reference signal sequence initialization value according to the type of the time unit and the number of the time unit.

With reference to the first possible implementation manner of the tenth aspect, in a second possible implementation manner of the tenth aspect, the processor is specifically configured to: and determining the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit.

With reference to the first possible implementation manner of the tenth aspect, in a third possible implementation manner of the tenth aspect, the processor is specifically configured to: determining the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit and the number interval;

With reference to the second possible implementation manner or the third possible implementation manner of the tenth aspect, in a fourth possible implementation manner of the tenth aspect, the processor is specifically configured to:

determining a third parameter according to the number of the time unit, or determining the third parameter by the first device according to the number of the time unit, the number of symbols corresponding to the type of the time unit, and the number of symbols corresponding to the type of a reference time unit, where the first parameter is a parameter related to the number of the time unit, and the type of the reference time unit is configured or predefined at the base station side;

determining a second parameter according to the type of the time unit;

and determining a reference signal sequence initialization value according to the second parameter and the third parameter.

With reference to the first possible implementation manner of the tenth aspect, in a fifth possible implementation manner of the tenth aspect, the processor is specifically configured to: determining the number of the time unit in a wireless frame according to the number of the symbols corresponding to the type of the time unit and the number of the symbols corresponding to the type of the reference time unit;

With reference to the fifth possible implementation manner of the tenth aspect, in a sixth possible implementation manner of the tenth aspect, the time unit corresponds to one or more sub-units, each sub-unit corresponds to one reference time unit, and each sub-unit has a number of the corresponding reference time unit.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the tenth aspect, in a seventh possible implementation manner of the tenth aspect, the processor is specifically configured to: determining a first parameter according to the number of the time unit, wherein the first parameter is a parameter related to the number of the time unit;

and determining a reference signal sequence initialization value according to the first parameter.

With reference to the tenth aspect or with reference to the first possible implementation manner to the seventh possible implementation manner of the tenth aspect, in an eighth possible implementation manner of the tenth aspect, the device is a base station or a terminal or a relay.

In one possible design, the apparatus provided in this application may include a module configured to perform the method of the above ninth aspect, wherein the terminal station behavior corresponds to that of the method of the above ninth aspect. The modules may be software and/or hardware.

In an eleventh aspect, the present application provides a computer storage medium for storing computer software instructions for a base station, a terminal, or a device provided in the above aspects, which contains a program designed to execute the above aspects.

In a twelfth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

Fig. 1 is a flowchart of an RS generation method provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a mini-slot provided herein;

fig. 3 is a flowchart of an RS generation method provided in the embodiment of the present application;

fig. 4 is a flowchart of a receiving method of an RS according to an embodiment of the present application;

fig. 5 is a flowchart of an RS generation method provided in an embodiment of the present application;

fig. 6 is a slot numbering scheme according to the first embodiment of the present disclosure;

fig. 7 is a slot numbering scheme according to a second embodiment of the present disclosure;

fig. 8 is a third slot numbering scheme provided in the embodiment of the present application;

fig. 9 is a fourth slot numbering manner provided in the embodiment of the present application;

fig. 10 is a schematic diagram of frequency domain resource numbering provided in an embodiment of the present application;

fig. 11 is a schematic diagram of a base station according to an embodiment of the present application;

fig. 12 is a schematic diagram of a terminal provided in an embodiment of the present application;

fig. 13 is a schematic view of an apparatus according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

The embodiment of the present application may be applied to a 5G (fifth generation mobile communication system) system, such as an access network adopting a New radio access technology (New RAT); communication systems such as CRAN (Cloud Radio access network ) or may also be used for future communication systems of 5G or more. Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device providing voice and/or data connectivity to a User, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like.

2) A base station, also called a Radio Access Network (RAN) device, is a device for accessing a terminal to a wireless Network, and includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Homeevolved Node B, or Home Node B, HNB), BaseBand Unit (BBU), Base Station (g NodeB, gNB), transmission point (TRP), Transmission Point (TP). In addition, a Wifi Access Point (AP) or the like may also be included.

In a 4G (fourth generation mobile communication system) communication system, RS sequences are generated according to slot numbers, and for example, a generation formula of a reference signal for indicating downlink channel state information, for example, a downlink channel state information reference signal (CSI-RS), is as follows:

wherein,for reference signal sequence values, i.e. RS sequences, n_sIs the slot number of the radio frame, m is the Resource Block (RB) number mapped by the reference signal, l is the symbol number,is the maximum Resource Block (RB) number of downlink, c () is the reference signal initialization function (e.g. pseudo random number generation function or non-pseudo random number generation function, etc.) defined by the protocol, c-_initIs the initialization value of the c () function, called the reference signal initialization value, and:

wherein, n'_sFor reference in relation to the slot number, it is calculated from the slot number, and, in particular,

wherein, for frame structure type 3 (secondary cell using normal cyclic prefix in licensed-assisted access (LAA)), n'_sUsing the above values, noThe following values are used.

And, N_CPIdentified for a Cyclic Prefix (CP),the default value is a cell Identification (ID) for a value configured by a base station through high-layer signaling.

As can be seen from the above equation, c_initIs according to n_sI.e. slot numbered, such that the RS sequenceAlso derived from the slot number, but in 5G, for a time unit, the slot is not used any more, but a time unit containing a symbol number less than the slot is used, specifically referred to as a mini-slot, for example, one mini-slot contains 2, 4, etc. symbols, and one slot contains 7 or 14 symbols, so that the number of symbols contained in the mini-slot is less than that of the slot, and only one type of mini-slot may be contained in one radio frame, or a mixture of multiple types of mini-slots.

For another example, a reference signal for indicating a downlink cell, for example, a downlink-specific reference signal (CRS), is generated by the following formula:

wherein, for frame structure type 3 (secondary cell using normal cyclic prefix in licensed-assisted access (LAA)), n'_sThe above values are used, otherwise the following values are used.

Wherein,for reference signal sequence values, i.e. RS sequences, n_sIs the slot number of the radio frame, m is the Resource Block (RB) number mapped by the reference signal, l is the symbol number,for the number of downlink RBs, c () is a protocol-defined reference signal initialization function (e.g., pseudo-random number generation function or non-pseudo-random number generation function, etc.), c_initFor the initialization value of the c () function, called reference signal initialization value, N_CPIn order to identify the CP,representing the cell identity.

As can be seen from the above equation, c_initIs according to n_sI.e. slot numbered, such that the RS sequenceAlso according to slot numbers.

For another example, a generation formula of a reference signal for downlink demodulation, for example, a downlink demodulation reference signal (DMRS), is as follows:

for port number 5:

wherein,for reference signal sequence values, i.e. RS sequences, n_sIs the slot number of the wireless frame, m is mapped by the reference signal, l is the symbol number,a bandwidth corresponding to an RB block determined according to downlink shared physical channel (PDSCH) transmission, c () is a protocol-defined reference signal initialization function (e.g., a pseudo-random number generation function or a non-pseudo-random number generation function), c +_initFor the initialization value of the c () function, called the reference signal initialization value,is a cell identity.

For a port number of 7, 8.. v +6, (where v is the number of layers for signal transmission), the RS sequence r (m) is determined by the following equation:

and,

the maximum number of RBs in the downlink. The generator of the pseudo-random sequence c (i) is composed of c_initAnd (5) initializing. Wherein n is_SCIDIs identified as scrambling. When a higher layer configures or uses DCI formats 1A, 2B, 2C,for configured DMRS identificationIf not, then,is a cell identity.

As can be seen from the above equation, c_initIs according to n_sI.e. slot numbered, such that the RS sequenceAlso according to slot numbers. Specifically, in the calculation formula of the reference signal initialization value of the DMRS, the slot number is divided by 2 and rounded down, so as to generate the same RS sequence on the adjacent slots, so that the RSs on the adjacent slots maintain orthogonality by using Orthogonal Cover Code (OCC).

For another example, the uplink RS sequence is generated based on a ZC sequence (Zadoff-Chu sequence) that is not dependent on slot number in the LTE protocol. However, when the uplink RS generated based on the ZC sequence is subjected to frequency hopping or mapping, the frequency hopping or mapping is related to the slot number, and the following formula is generated:

u＝(f_gh(n_s)+f_ss)mod30，

wherein u represents a sequence group number, f_gh(n_s) Representing a group hopping pattern, f_ssRepresenting a sequence shift pattern.

And,

wherein c () represents a pseudorandom sequence, i is an integer value from 0 to 7, gh represents a group hopping (n)_sIndicating the slot number.

In summary, it can be seen that the RS generation formula in the prior art adopts an RS formula defined in the LTE protocol, and the slot number is one of the parameters, regardless of the downlink CSI-RS generation formula, the DMRS generation formula, the CRS generation formula, and the like, or the uplink sequence mapping.

With the development of communication technology, slots are divided into smaller time units in 5G communication at present, which are collectively called mini-slots in the embodiment of the present application, and since the mini-slots are units smaller than the slots, if the above formulas for generating RSs are directly used without being modified, RS sequences corresponding to multiple mini-slots located in the same slot will be the same, thereby affecting randomization of interference.

To this end, an RS generation method is provided for the embodiment of the present application, and as shown in fig. 1, the method is executed by a terminal side, and specifically includes:

step 101, the terminal determines a reference signal sequence initialization value according to a first parameter set, where the first parameter set includes a number of a time unit, and the number of symbols included in the time unit is less than the number of symbols included in one slot.

And 102, the terminal generates an RS sequence according to the reference signal sequence initialization value.

For convenience of understanding, the following description is made with reference to specific examples, and taking the CSI-RS generation formula as an example, the first reference set includesn_RNTIAnd also includes the numbering of time units, which in the embodiments of the present application are still presentThen n_sIt means that for the generation formula of other RS sequences, the first parameter set is the set of other parameters accordingly, but the first parameter set used contains the parameter of the time unit number no matter what formula generates RS.

Therefore, in the application embodiment, taking the CSI-RS generation formula as an example, to obtain an RS sequence, it is still necessary to calculate and obtain a parameter value in the first parameter set, and then obtain an initialization value of the reference signal sequence, but the difference from the prior art is that the method for obtaining the used parameter is changed, for example, taking the parameter of the number of the time unit as an example, and the method for obtaining the parameter is no longer to use the number of the slot as the parameter n_sThe value of (2) is obtained from the number of the time cell.

For convenience of explanation, a mini-slot will be used in the embodiment of the present application to represent a time unit to which the embodiment of the present application is applied.

Wherein, the reference signal sequence initialization value is c appearing in the above formula in a specific implementation manner_initOf course, c_initThe calculation of the sum is not limited to the above forms, others are related to c_initAre also included within the scope of the present application.

How to determine the number of time cells in the first parameter set, i.e., how to determine n in each RS sequence generation formula, is described below with reference to the drawings_sThe value is obtained.

When each mini-slot occupies one RS time domain position, then n_sThe value of (1) is the number of a mini-slot. The number of the mini-slot may be notified to the terminal by the base station through a signaling manner, for example, a parameter including the number of the mini-slot is carried in the signaling, the signaling carries a parameter rsgenerartslotnumber and a specific value corresponding to the parameter, the value is used to represent the number of the time unit, for example, the value range of the value is any integer from 0 to 59, 59 is an example, the value represents the number of the slot from 0 to 19 (in a radio frame) in LTE, and if a slot includes 3 slots, the number of the slot is 0 to 19 (in a radio frame)The inter-cell has 60 time cells (mini-slots) in total, and if the base station indicates a specific number through signaling, for example, indicates rsgenerartastlotnumber as 20, the time cell number in the first parameter set is 20, that is, n is n_s＝20。

When a plurality of mini-slots share the same RS time domain position, which mini-slots share one RS time domain position can be indicated in a protocol predefined mode, so that the terminal can calculate n according to the serial numbers of the plurality of mini-slots sharing the same RS time domain position_sTaking the value of (A); or the serial numbers of a plurality of mini-slots sharing one RS time domain position are issued to the terminal by the base station through commands, so that the terminal calculates and obtains n according to the received serial numbers of the plurality of mini-slots_sThe value of (a).

The signaling may be Radio Resource Control (RRC), Downlink Control Information (DCI), MAC Control element (MAC CE) signaling, or other signaling, which is not limited in this embodiment.

As shown in fig. 2, a schematic diagram of a possible time unit (mini-slot) provided in this embodiment is shown, where each mini-slot includes 4 symbols, and mini-slot #0 and mini-slot #1 share one RS time domain position, and mini-slot #2 and mini-slot #3 share one RS time domain position, then when a terminal generates an RS sequence, this parameter of the number of the time unit used by the terminal may be determined according to the number of the time unit sharing the RS time domain position, and the number of the time unit sharing the same RS time domain position may be predefined by a protocol or issued by a base station through signaling, for example, mini-slot #0 and mini-slot #1 share one RS time domain position, then mini-slot #0 and mini-slot #1 may be predefined by a signaling or a protocol, when the mini-slot #0 and the mini-slot #1 are obtained from the received signaling by the terminal, after the signaling is obtained, the mini-slot #0 and the mini-slot #1 are obtained from the signaling, and the parameter (namely n) of the number of the time unit in the first parameter set is further obtained through operation_s)。

The specific calculation methods are various, and the embodiment of the present application is not limited, and may be n, for example_sMin (mini-slot #), where mini-slot # represents a set of numbers of all time units sharing the same RS time domain position, or n_sMax (mini-slot #), or n_sMin (mini-slot # odd +1, mini-slot # even), or n_sMax (mini-slot # odd +1, mini-slot # even), or n_sMin (mini-slot # odd, mini-slot # even +1), or n_sMax (mini-slot # odd +1, mini-slot # even +1), or may also be n_sMin (mini-slot # odd-1, mini-slot # even), or n_sMax (mini-slot # odd-1, mini-slot # even), where mini-slot # odd represents the odd-numbered set of time cells, mini-slot # odd +1 represents adding 1 to the odd-numbered each time cell in the odd-numbered set of time cells, and likewise, mini-slot # even represents the even-numbered set of time cells, and mini-slot # even +1 represents adding 1 to the even-numbered each time cell in the even-numbered set of time cells, for example, by n_sGiven the time units currently sharing the same RS time domain position, time unit 0, time unit 1, time unit 2, and time unit 3, then min-slot # odd is {1, 3}, and min-slot # even is {0, 2}, so that n is the equation min (min-slot # odd +1, min-slot # even)_sMin (2, 4, 0, 2) ═ 0, the calculation manner is similar for other formulas, and details are not repeated here, and the method for obtaining the event unit number in the first parameter set according to the numbers of the multiple time units sharing the same RS time domain position in the embodiment of the present application is not limited to the above several manners, which is just described as an example, and any method that can obtain the event unit number in the first parameter set according to the numbers of the multiple time units sharing the same RS time domain position can be used in the embodiment of the present application.

In a possible design, in order to make the RSs on adjacent slots use Orthogonal Cover Codes (OCCs) uniformly, considering the existing protocol, when calculating the RS sequence, the used formula also performs corresponding processing on the number parameter of the time unit, for example, dividing the number of the time unit by 2 and then rounding down, thereby ensuring that two adjacent slots can generate the same RS sequence.

Taking the DMRS generation formula of the existing protocol as an example, it can be seen that the calculation formula for the parameter signal sequence initialization value is:

wherein, for n_sA division by 2 and rounding down is performed.

In order to continue the use of the OCC, the embodiment of the present application may appropriately modify the above formula according to the specific situation that the mini-slot shares the RS time domain position.

For example, taking the sharing situation shown in fig. 2 as an example, in order that the RS of one symbol shared by the mini-slots #0 and #1 in fig. 2 is the same as the RS of one symbol shared by the mini-slots #2 and #3, the above-mentioned RS for the downlink DMRS calculation formula can be usedIs modified intoSimilarly, if the length of each mini-slot shown in FIG. 2 is reduced to 2 symbols, i.e. 8 mini-slots share 2-symbol RS, the formula can be modified

Therefore, when the reference information sequence initialization value is generated in the DMRS generation formula, the DMRS generation formula can be used for generating the reference information sequence initialization valueIs modified intoWhere M is equal to the number of time units within one or more slots that share the RS sequence, i.e., M is related to numerology (the number used to indicate the mini-slot). The numerology includes the length of the mini-slot. The premise of the scheme is that the design idea of DMRS in LTE is adopted (RS on adjacent slots are consistent and OCC is used)

Examples are: indicating 4 symbols mini-slot (e.g., indicating the number of symbols of the mini-slot through signaling, or determining the number of symbols of the mini-slot through numerology), the terminal and the base station may correspond to M-4 and generate a consistent DMRS for UE demodulation.

Indicating numerology as 2 symbols mini-slot, the terminal and base station may correspond to M-8. That is, the value of M is related to the number of symbols contained in the mini-slot.

Thus, in the above example, the first parameter set includes not only the number of time units, but also the number of time units sharing the RS sequence in one or more time slots, i.e., the value of M. Specifically, M is equal to the number of time units that share the RS sequence. When a plurality of slots share the RS sequence, the plurality of slots may be a plurality of consecutive slots or a plurality of discontinuous slots. For example, the consecutive time slots may be two consecutive time slots, and the non-consecutive time slots may be non-consecutive time slots. The RS sequence can also be shared by a plurality of discontinuous slots, for example, slots 1 and 3 share the RS sequence located on slot 1.

Another scheme for DMRS design is to not use OCC, so there is no need for RS agreement of adjacent slots. The calculation formula of the CSI-RS can be used for reference, namely n_s' and n_sThe linear relationship, i.e., the calculation formula of DMRS, can be represented by:

instead, it is changed into

Wherein,virtual cell ID, n, configured for a base station_SCIDScrambling IDs used by different users when multiple users are made in a cell can only be configured to be 0 and 1,

the above embodiments are described only by taking DMRS generation as an example, and the embodiments of the present invention are also applicable to generation of other RS sequences that require OCC or do not use OCC, and are not limited thereto.

While the terminal side has been described above as generating an RS sequence, the base station side may generate an RS sequence using the same method, and the following description is given below.

Referring to fig. 3, a schematic diagram of an RS generation method provided in the embodiment of the present application is shown, where an execution subject of the method is a base station, and the method includes:

step 301, the base station determines a reference signal sequence initialization value according to a first parameter set, where the first parameter set includes a time unit number, and the number of symbols included in the time unit is less than the number of symbols included in one slot;

and step 302, the base station generates an RS sequence according to the reference signal sequence initialization value.

Further, the number of the time unit is determined according to the number of one time unit containing the RS time domain position, or according to the numbers of at least two time units sharing the same RS time domain position.

Further, the determining of the number of the time unit according to at least two time unit numbers sharing the same RS time domain position includes:

Further, the first parameter set further includes the number of time units sharing the RS sequence in one or more slots.

As can be seen from the above steps, the method for generating the RS sequence at the base station side is the same as that at the terminal side, and is not described herein again, and the description may specifically refer to the method for generating the RS sequence at the terminal side.

After generating the RS sequence, the base station generates a reference signal according to the RS sequence, generates a reference signal through operations such as mapping for the reference signal sequence, and transmits the generated reference signal to the terminal. The terminal can obtain the channel information to be measured according to the received RS sequence and the RS sequence generated locally.

Therefore, for the terminal side, a method for receiving a reference signal RS is also included, as shown in fig. 4, including:

step 401, the terminal receives a signaling from the base station, where the signaling is used to indicate RS time domain positions used by one or at least two time units, and the number of symbols of the time unit is less than the number of symbols of one slot.

And step 402, the terminal receives the RS from the base station according to the signaling.

For example, the signaling may include information of a symbol K, where the information of the symbol K is information of a symbol corresponding to an RS time domain position shared by N continuous or discontinuous time units, and in one possible design, the N continuous or discontinuous time units may share an RS sequence. N may have its value predefined in the protocol, or the signaling sent by the base station to the terminal may contain information of N, such as a value indicating N.

For example, the signaling includes a value of K, and the terminal side knows the numbers of multiple time units sharing the same RS time domain position by protocol predefining or signaling by the base station, for example, the numbers are mini-slot #0, mini-slot #1, mini-slot #2, and mini-slot #3, and the value of K is 10 (as an example), then the terminal starts from the first symbol in mini-slot #0, mini-slot #1, mini-slot #2, and mini-slot #3, and the 10 th symbol position from the beginning is the symbol position where the base station maps the RS sequence, so the terminal can receive the RS sequence at the base station side from this position.

For another example, for the signaling sent by the base station, the signaling may also include information of a time unit L and information of a symbol P on the time unit L; the time unit L is the L-th time unit in continuous or discontinuous N time units sharing the same RS time domain position, the symbol P is the P-th symbol in the L-th time unit, K is an integer, N is a positive integer, L is a positive integer not greater than N, and P is the number of symbols not greater than the time unit.

For example, if the value of the indication L in the signaling is 2 and the value of P is 4, it indicates that the 4 th symbol position of the 2 nd time unit in the N time units (e.g., mini-slot #0, mini-slot #1, mini-slot #2, and mini-slot #3) sharing the same RS time domain position is the symbol position of the base station mapping RS sequence, so that the terminal receives the RS sequence at the base station side from the position. Wherein, again, N may have its value predefined in the protocol, or the signaling sent by the base station to the terminal may include information of N, such as a value indicating N.

In a possible design method, a signaling can also be issued for each mini-slot individually to indicate the RS time domain location information applicable to the mini-slot.

The signaling may be in the form of RRC, DCI, or MAC CE.

In one possible design, after receiving the RS sequence at the base station side, the terminal may obtain channel information to be measured according to the received RS sequence and the locally generated RS sequence.

That is, in this embodiment of the present application, the terminal side and the base station side generate RS sequences in the same way, and the base station further maps the generated RS sequences to a certain symbol position and sends the symbol position to the terminal, and the terminal finds the symbol position and receives the RS sequence at the base station side, and further obtains channel information to be measured according to the received RS sequence at the base station side and the locally generated RS sequence.

Alternatively, in the embodiments of the present application, symbol positions of RSs may be received by multiple time units that are predefined by the protocol and exclusively or share the same RS time domain position, so that the terminal may receive RSs from the symbol positions predefined by the protocol.

In the above embodiments, the terminal may determine the reference signal sequence initialization value according to the first parameter set, and generate the RS sequence according to the reference signal sequence initialization value, and in particular, may be applied to the generation of the CSI-RS sequence, the generation of the CRS sequence, the generation of the DMRS sequence, and the generation of other RS sequences, where the parameters included in the first parameter set may refer to the parameters used in the corresponding RS sequence generation formula currently existing, for example, for the generation of the CSI-RS sequence, the first parameter set used may refer to the parameter set in the formula used in generating the CSI-RS sequence in LTE, but different from the parameter set used in generating the CSI-RS sequence in LTE, the first parameter set used in the embodiment of the present application includes a time number, and the number of symbols included in the time unit is less than the number of symbols included in one slot, however, the time unit used when the CSI-RS sequence is generated in LTE is the slot itself, and because the time unit does not use the slot any more but uses a time unit with a number of symbols smaller than the number of symbols contained in the slot in a 5G communication or future 5G and later communication systems, in order to adapt to a communication system, the RS sequence can be correctly generated.

As shown in fig. 5, an embodiment of the present application further provides a method for generating a reference signal RS, where an execution subject of the method is a network side device (e.g., a base station), or a relay, or a terminal, and the method includes:

step 501, the first device determines a reference signal sequence initialization value according to the second parameter set.

And 502, the first device generates an RS sequence according to the reference signal sequence initialization value.

The embodiment of the present application is still an improvement based on the formula for generating the RS sequence in the existing protocol, wherein the parameters related to the time unit in the second parameter set can be described in two cases.

Case one, the second parameter set includes the first parameter

The first parameter is a parameter related to the number of time units, which number is related to the type of the time unit. The number of symbols contained in one time unit is one or more, and the number of symbols contained in different types of time units is different.

It should be noted that, the definition of the time unit in the RS generating method shown in fig. 5 is different from the definition of the time unit in the RS generating method shown in fig. 1 and 3, the number of symbols included in the time unit is less than the number of symbols included in the slot, and in the RS generating method shown in fig. 5, the number of symbols included in the time unit may be equal to the number of symbols of the slot, may also be greater than the number of symbols of the slot, or may also be less than the number of symbols of the slot, for example, in one possible design, the slot includes 7 symbols or includes 14 symbols.

Therefore, the type of the time unit is determined according to the number of symbols included in the time unit, for example, if the time unit includes 7 symbols or 14 symbols, the time unit including 7 symbols is of one type, and the time unit including 14 symbols is of one type.

Taking the above CSI-RS generation formula as an example, since:

therefore, n'_sI.e. the first parameter in the second set of parameters of the embodiments of the present application, the parameter is determined according to the number of the time unit, and the number of the time unit is determined according to the type of the time unit.

Case two, the second parameter set contains the second parameter and the third parameter

The second parameter is a parameter related to the type of the time unit, and the third parameter is a parameter related to the number of the time unit.

Wherein the third parameter is similar to the first parameter in case one, and is a parameter related to the number of time units, i.e. n 'in the above formula'_s(of course, the above formula is merely exemplary and not limited to the above formula).

For ease of illustration, the second parameter may be N_slotIndicating, for example, that the type of time unit contains 7 symbols and contains 14 symbols, in one possible implementation,

In the present embodiment, since the corresponding RS sequences are generated in different manners for different time cell numbering schemes, the following first describes the time cell numbering scheme in the present embodiment.

For convenience of description, in the RS generation method shown in fig. 5, slots are taken as an example of time units, and the number of symbols included in one slot is 7 or 14. And, a slot including 7 symbols is referred to as a reference slot (or referred to as a reference time unit), and of course, a time unit including other symbol numbers may also be referred to as a reference slot, which is not limited in this embodiment of the present application. It is to be understood that the embodiments of the present invention may also be applied to time units other than slots, for example, a time unit including symbols with a number less than that of a slot, such as a mini-slot, which is not described herein again.

And the type of the reference time unit is a time unit type configured or predefined by a network side.

According to the embodiment of the application, the first equipment determines the number of the time unit according to the type of the time unit

slot numbering mode one

Referring to fig. 6, in the first slot numbering manner provided in the embodiment of the present application, the number of a slot in a radio frame is determined according to the number of symbols corresponding to the type of the slot, or the number of a slot in a radio frame is determined according to the number of symbols corresponding to the type of the slot and the sequence number of a subframe in which the slot is located.

That is, slots containing 7 symbols and slots containing 14 symbols are numbered sequentially, specifically, slots containing 7 symbols are numbered sequentially as 0, 1, 2, 3, 4, 5, … …, and slots containing 14 symbols are also numbered sequentially as 0, 1, 2, 3, 4, 5, … ….

For example, a radio frame has 10 subframes, each subframe includes 2 slots, and each slot includes the same symbols (e.g., 7 symbols or 14 symbols), the number of the 2 nd slot on the 5 th subframe may be obtained by sequentially numbering from front to back, and is 9 (starting from 0), or 2 nd slot of the 5 th subframe according to the slot, so that the number is the number of slots in the subframe + the number of slots in the subframe is 4 + 2+1 — 9. It is understood that the subframe and the radio frame may be referred to by other names, and the relationship between the subframe, the radio frame and the slot may also be referred to by other relationships, which are not described herein again.

slot number mode two

Referring to fig. 7, a second slot numbering manner provided in the embodiment of the present application is provided, where the numbering manner is to determine the number of a slot according to the number of symbols corresponding to the type of the slot and the number of symbols corresponding to the type of a reference slot; or determining the number of the slot according to the number of the symbols corresponding to the type of the slot, the number of the symbols corresponding to the type of the reference time unit and the serial number of the subframe where the slot is located; and the type of the reference slot is configured or predefined on the base station side.

Or may also be understood as: and determining the number of the time unit according to the number of the reference time unit corresponding to the time unit.

That is, the time units and the reference time units are numbered in a mixed manner, for example, for the time units containing 7 symbols, the time units containing 14 symbols are numbered in sequence, because the time units containing two sub-units are respectively corresponding to one reference time unit, the time units can be corresponding to two numbers, and when the time units containing 14 symbols are numbered specifically, one of the numbers can be selected as the number of the time unit, for example, the number of the Q (in this example, Q is 1 or Q is 2) of the reference time unit corresponding to the time unit is selected, as the number of the time unit, for example, the number of the 1 st number is selected as the number of the time unit, the other numbers can be selected as the number of the time unit, referring to FIG. 7, the numbers of the slots containing 7 symbols are respectively 0 and 1, and the number of the symbols of the reference slots is 7 for the slots containing 14 symbols, therefore, the slot containing 14 symbols includes two sub-units, and thus may correspond to two numbers, for example, 2 and 3, respectively, and the number of the slot (slot) may be 2 or 3, which is determined according to the actual situation.

slot number mode three

Referring to fig. 8, a third slot numbering manner provided in the embodiment of the present application is shown, where the slot numbering manner is to determine a slot number in a wireless frame according to a symbol number and a numbering interval corresponding to a type of the slot; or determining the number of the slot in the wireless frame according to the number of the symbols corresponding to the type of the slot, the serial number of the subframe where the slot is located and the number interval; the number interval is determined by the first device according to the number of symbols corresponding to the type of the slot and the number of symbols corresponding to the type of the reference slot, and the type of the reference time unit is configured or predefined at the base station side.

For example, for the case shown in fig. 8, the calculation formula of the number interval is:wherein N is_symbolFor the number of symbols contained in a slot,is the number of symbols contained in the reference slot. If the current slot contains 14 symbols and the reference slot contains 7 symbols, the number interval is 14/7-2. Thus, referring to fig. 8, slots containing 14 symbols are numbered in the order of 0, 2, … … as shown in fig. 8, while slots containing 7 symbols are actually numbered in the order of natural numbers because the corresponding numbering interval is 7/7-1.

slot number mode four

Referring to fig. 9, a fourth slot numbering manner provided in the embodiment of the present application is shown, where in the numbering manner, one slot may correspond to one or more time units, each sub-unit corresponds to one reference time unit, and each sub-unit has a number of the corresponding reference time unit, and specifically, the number of the slot is determined according to the number of symbols corresponding to the type of the slot; or determining the number of the slot according to the number of the symbols corresponding to the type of the slot and the sequence number of the subframe where the slot is located.

Referring to fig. 9, a reference slot is a slot including 7 symbols, and thus, for a slot including 14 symbols, since the slot corresponds to two reference slots, the slot includes two time units (2 and 3 shown in fig. 9), that is, each sub-unit (the number of symbols included in the reference slot is the same) corresponds to one number.

After the slots are numbered according to any of the above numbering manners, the reference signal sequence initialization value may be further determined according to the slots after the slots are numbered.

The following description is divided into two cases.

The first and second parameter sets comprise the first parameter

The first parameter is a parameter related to the number of the time unit, and taking the generation formula of the CSI-RS as an example, the first parameter is n'_sThat is, n 'is determined from the number of time units'_sAnd then according to the determined n'_sAnd other parameters in the second parameter set, determining the reference signal sequence initialization value.

The calculation method of the case one is applicable to the slot number two and the slot number four, and specifically, the generation formula of the reference signal sequence initialization value in the existing protocol may still be used, that is:

wherein, n'_sIs a first parameter, and the first parameter is based on a time sheetAnd the number of the element is determined, and the number of the time unit is determined according to the number mode two and the number mode four.

The above description is only given by taking the CSI-RS generation formula as an example, but the present invention is not limited to the CSI-RS generation formula, and can be applied to other RS sequence generation formulas.

Optionally, the third parameter is the number of the time unit, the number of the time unit is sequentially numbered by a natural number, or the third parameter is determined according to the number of the time unit, the number of symbols corresponding to the type of the time unit, and the number of symbols corresponding to the type of a reference time unit, the number of the time unit is determined according to the number of symbols corresponding to the type of the time unit, and a number interval, the number interval is determined according to the type of the time unit and the type of the reference time unit, and the type of the reference time unit is configured or predefined on the base station side.

The second parameter is determined according to the type of the time unit.

Wherein, when the third parameter is the number of the time unit, it corresponds to the above-mentioned number one, and accordingly, c in the generation formula of the CSI-RS can be expressed_initThe generation mode of the method is modified as follows:

wherein, n'_sIs a third parameter, and n'_sNumber equal to time unit, N_slotAs a second parameter, in terms of time units

Is determined.

When the third parameter is determined based on the number of time units, the number of symbols corresponding to the type of time unit and the number of symbols corresponding to the type of reference time unit, a possible design is that the third parameter n 'is determined using the following formula'_s：

Wherein,for the numbering interval, slot is the number of time units,

in a possible design, an embodiment of the present application further provides a method for calculating an initialization value of a reference signal sequence, taking CSI-RS as an example, where the CSI-RS is in a calculation formula in an existing protocol:

with different sequences in different CP cases. Similarly, when the system has slots of 7 and 14 symbols at the same time, it can be distinguished in a manner similar to N _ CP. For example, c can be_initThe calculation formula of (2) is modified as follows:

wherein,

as shown in fig. 10, for a frequency domain resource numbering diagram provided in the embodiment of the present application, taking CSI-RS as an example, for different subcarrier intervals (e.g., 15kHz and 30kHz), the Physical Resource Block (PRB) number of the frequency domain cannot be determined according to the scheme (fixed 15kHz) of the existing system, so that the mapping method of the pilot frequency cannot be determined.

In the embodiment of the present application, Sub6GHz is taken as an example, 15kHz is selected as reference numerology or reference subcarrier spacing, and a reference signal sequence is determined according to the maximum RB number (maximum system bandwidth) corresponding to 15kHz

For example, for 30kHz, the pilot values on the REs are determined according to the relationship of the current 30kHz and the reference numerology/subcarrier spacing, i.e., the relationship of 30kHz and 15kHz, as shown in fig. 10, the pilot values on the second RB for 30kHz and the third RB for 15kHz are the same.

A CSI-RS mapping method provided in LTE comprises the following steps:

wherein,the number of RBs of the maximum bandwidth is downstream,is the RB number of the system bandwidth, m' is the serial number of the reference signal sequence element in the system bandwidth, m is the serial number of the reference signal sequence element in the maximum downlink bandwidth, w_l"For the coefficients of the orthogonal cover code,is a signal mapped to the reference signal RE.

According to fig. 10, the mapping method may be:

wherein,for the maximum number of RBs in downlink corresponding to the reference subcarrier spacing,for the number of RBs corresponding to the scheduling bandwidth and under the interval of the reference subcarriers, m' is the serial number of the reference signal sequence element in the system bandwidth, m is the serial number of the reference signal sequence element in the maximum downlink bandwidth, w_l"For the coefficients of the orthogonal cover code,for signals mapped to reference signal RE, f is the subcarrier spacing of the current pilot, f_refIs a reference subcarrier spacing.

Of course, for other RS sequence generation formulas, similar methods can be used for modification, and are not described again.

The embodiment of the application supports pilot mapping during Frequency Division Multiplexing (FDM) of different sub-carriers, and ensures that sequences on different RBs are different.

According to the method of the embodiment of the application, the RBs in the system bandwidth with different subcarrier intervals can be numbered simultaneously, and the numbering is ensured not to be repeated.

All of the contents and embodiments of the present application are applicable to transmission or reception of downlink or uplink reference signals.

Based on the same inventive concept, the embodiment of the present application further provides a base station 1100, as shown in fig. 11, which is a schematic structural diagram of the base station 1100, and the base station 1100 can be applied to execute the methods shown in fig. 3 and fig. 5. The base station 1100 includes one or more Remote Radio Units (RRUs) 1101 and one or more baseband units (BBUs) 1102. The RRU1101 may be referred to as a transceiver unit, transceiver circuitry, or transceiver, etc., which may include at least one antenna 11011 and a radio unit 11012. The RRU1101 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending the signaling indication described in the above embodiment to user equipment (i.e., a terminal). The BBU1102 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU1101 and the BBU1102 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU1102 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the flow shown in fig. 3 and 5.

In an example, the BBU1102 may be formed by one or more boards, where the boards may collectively support a radio access network (e.g., an LTE network) of a single access system, and may also respectively support radio access networks of different access systems. The BBU1102 also includes a memory 11021 and a processor 11022. The memory 11021 is used to store necessary instructions and data. For example, the memory 11021 stores parameter sets (including a first parameter set and a second parameter set), generated RS sequences in the above-described embodiments. The processor 11022 is used for controlling the base station to perform necessary actions, for example, for controlling the actions of the base station as shown in fig. 3 and fig. 5. The memory 11021 and the processor 11022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Or multiple boards may share the same memory and processor. In addition, each single board is provided with necessary circuits.

Based on the same inventive concept, an embodiment of the present application further provides a user equipment UE1200, as shown in fig. 12, which is a schematic structural diagram of the user equipment UE. For ease of illustration, fig. 12 shows only the main components of the user equipment. As shown in fig. 12, the user equipment 1200 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly configured to process the communication protocol and the communication data, control the entire UE, execute a software program, and process data of the software program, for example, to support the UE to perform the actions described in the section of fig. 1, 4, and 5. The memory is mainly used for storing software programs and data, for example, the codebook described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. For example, the method may be used to execute part 402 in fig. 4, and receive a signaling indication and/or a reference signal sent by a base station, which may refer to the description in the relevant part above. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to user equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 12 shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole user equipment, execute a software program, and process data of the software program. The processor in fig. 12 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the user equipment may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capability, and various components of the user equipment may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

Exemplarily, in the embodiment of the present invention, the antenna and the control circuit having the transceiving function may be regarded as the transceiving unit 1201 of the UE1200, and the processor having the processing function may be regarded as the processing unit 1202 of the UE 1200. As shown in fig. 12, the UE1200 includes a transceiving unit 1201 and a processing unit 1202. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiving unit 1201 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 1201 may be regarded as a transmitting unit, that is, the transceiving unit 1201 includes a receiving unit and a transmitting unit, the receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and the transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Based on the same inventive concept, an apparatus, which may be a base station or a UE, is also provided in the embodiments of the present application, as shown in fig. 13, and the apparatus at least includes a processor 1301 and a memory 1302, further may include a transceiver 1303, and further may include a bus 1304.

The processor 1301, the memory 1302 and the transceiver 1303 are all connected by a bus 1304;

the memory 1302 is used for storing computer execution instructions;

the processor 1301 is configured to execute the computer executable instructions stored by the memory 1302;

when the apparatus 1300 is a base station, the processor 1301 executes the computer-executable instructions stored in the memory 1302, so that the apparatus 1300 executes the steps executed by the base station in the content request method provided by the embodiment of the present application, or the base station deploys the functional units corresponding to the steps.

When the apparatus 1300 is a terminal, the processor 1301 executes the computer-executable instruction stored in the memory 1302, so that the apparatus 1300 executes the steps executed by the terminal in the content request method provided by the embodiment of the present application, or the terminal deploys the functional units corresponding to the steps.

A processor 1301, which may include different types of processors 1301, or the same type of processors 1301; processor 1301 can be any of the following: a Central Processing Unit (CPU), an ARM processor, a Field Programmable Gate Array (FPGA), a special processor, and other devices with computing and Processing capabilities. In an alternative embodiment, the processor 1301 may also be integrated as a many-core processor.

Memory 1302 may be any one or any combination of the following: a Random Access Memory (RAM), a Read Only Memory (ROM), a non-volatile memory (NVM), a Solid State Drive (SSD), a mechanical hard disk, a magnetic disk, and a whole array of magnetic disks.

The transceiver 1303 is used for the apparatus 1300 to perform data interaction with other devices; for example, if the apparatus 1300 is a base station, the base station may perform the methods described in fig. 3 and 5; the base station performs data interaction with the terminal through the transceiver 1303; if the apparatus 1300 is a terminal, the terminal may perform the methods described in fig. 1, 4, and 5; the terminal performs data interaction with the base station through the transceiver 1303; the transceiver 1303 may be any one or any combination of the following: a network interface (e.g., an ethernet interface), a wireless network card, etc. having a network access function.

The bus 1304 may include an address bus, a data bus, a control bus, etc., which is represented by a thick line in FIG. 13 for ease of illustration. Bus 1304 may be any one or any combination of the following: an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture, EISA) bus, and other devices for wired data transmission.

The embodiment of the application provides a computer readable storage medium, wherein a computer execution instruction is stored in the computer readable storage medium; the processor of the base station or the terminal executes the computer execution instruction, so that the base station or the terminal executes the steps executed by the base station or the terminal in the above method provided by the embodiment of the present application, or the base station or the terminal deploys the functional units corresponding to the steps.

Embodiments of the present application provide a computer program product comprising computer executable instructions stored in a computer readable storage medium. The processor of the base station or the terminal may read the computer-executable instructions from the computer-readable storage medium; the processor executes the computer-executable instructions, so that the base station or the terminal executes the steps executed by the base station or the terminal in the above method provided by the embodiment of the application, or the functional units corresponding to the steps are deployed on behalf of the base station or the terminal.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in embodiments of the present invention may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

The various illustrative logical units and circuits described in connection with the embodiments disclosed herein may be implemented or operated through the design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be located in a UE. In the alternative, the processor and the storage medium may reside in different components in the UE.

In one or more exemplary designs, the functions described above in connection with the embodiments of the invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic computer, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. Such discs (disk) and disks (disc) include compact disks, laser disks, optical disks, DVDs, floppy disks and blu-ray disks where disks usually reproduce data magnetically, while disks usually reproduce data optically with lasers. Combinations of the above may also be included in the computer-readable medium.

The foregoing description of the invention is provided to enable any person skilled in the art to make or use the invention, and any modifications based on the disclosed content should be considered obvious to those skilled in the art, and the general principles defined by the present invention may be applied to other variations without departing from the spirit or scope of the invention. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles of the invention and novel features disclosed.

Claims

1. A method for generating a Reference Signal (RS), the method comprising:

2. The method of claim 1, wherein the number of the time unit is determined according to a number of one time unit containing the RS time domain position, or according to numbers of at least two time units sharing the same RS time domain position.

3. The method of claim 2, wherein the determining the number of the time unit according to at least two time unit numbers sharing the same RS time domain position comprises:

4. The method of claim 1, further comprising the terminal receiving signaling from a base station, wherein the signaling comprises information indicating a number of the time unit.

5. The method according to claim 2 or 3, wherein the terminal receives signaling from the base station, and the signaling comprises information indicating at least two time unit numbers sharing the same RS time domain position.

6. The method of claim 1, wherein the first set of parameters further comprises a number of time units sharing an RS sequence in one or more time slots.

7. A method for receiving a reference signal RS, the method comprising:

8. The method of claim 7, wherein the signaling is used for indicating RS time domain positions used by one or at least two time units, and comprises:

9. A method for generating a Reference Signal (RS), the method comprising:

10. The method of claim 9, wherein the number of the time unit is determined according to a number of one time unit containing the RS time domain position, or according to numbers of at least two time units sharing the same RS time domain position.

11. The method of claim 10, wherein the determining the number of the time unit according to at least two time unit numbers sharing the same RS time domain position comprises:

12. The method of claim 9, wherein the first set of parameters further comprises a number of time units sharing an RS sequence in one or more time slots.

13. A method for generating a Reference Signal (RS), the method comprising:

the first equipment determines a reference signal sequence initialization value according to a second parameter set, wherein the second parameter set comprises a first parameter, the first parameter is a parameter related to the number of a time unit, and the number of the time unit is related to the type of the time unit; or, the second parameter set includes a second parameter and a third parameter, the second parameter is a parameter related to the type of the time unit, and the third parameter is a parameter related to the number of the time unit; the number of symbols contained in one time unit is one or more, and the number of symbols contained in one time unit is different according to different types of time units;

14. The method of claim 13, wherein the number of the time unit is related to the type of the time unit, and wherein the method comprises:

15. The method of claim 14, wherein the first device determines the number of time units according to the type of time units, comprising:

the type of the reference time unit is a signaling configuration or a predefined time unit type.

16. The method of claim 15, wherein determining the number of the time unit according to the number of the reference time unit corresponding to the time unit comprises:

q is a positive integer, and Q is configured or predefined on the network side.

17. The method of claim 15, wherein determining the number of the time unit according to the number of the reference time unit corresponding to the time unit comprises:

18. The method of claim 13, wherein the third parameter is a parameter associated with a number of time units, and wherein the third parameter comprises:

19. The method according to any one of claims 13 to 18, wherein the first device is a network side device or a terminal or a relay.

20. An apparatus, comprising a processor and a memory:

the processor is configured to execute the instructions in the memory to cause the apparatus to perform the steps of the method of any one of claims 1-8 or 13-18.

21. An apparatus, comprising a processor and a memory:

the processor is configured to execute the instructions in the memory to cause the apparatus to perform the steps of the method of any of claims 9-12 or 13-18.