WO2022170473A1

WO2022170473A1 - Methods, devices, and systems for configuring random access channel occasion allocation

Info

Publication number: WO2022170473A1
Application number: PCT/CN2021/076233
Authority: WO
Inventors: Juan Liu; Li Tian
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2022-08-18
Anticipated expiration: 2023-08-09
Also published as: CN116889076A

Abstract

The present disclosure describes methods, systems and devices for configuring a random access channel (RACH) occasion allocation. One method includes configuring, by a base station or a user equipment (UE), a physical random access channel (PRACH) occasion allocation by mapping, by the base station or the UE, a position pattern including Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, and a maximum number of reference slots in the specific time duration being 40*P. P is a positive integer. The position pattern includes a position set of {X 1, X 2,..., X Q } with Q positions, Q being an integer between 1 and 40*P, inclusive. Each member of the position set is an integer between 0 and 40*P-1, inclusive; and when i < j, X i < X j, wherein i and j are integers between 1 and Q, inclusive.

Description

METHODS, DEVICES, AND SYSTEMS FOR CONFIGURING RANDOM ACCESS CHANNEL OCCASION ALLOCATION

TECHNICAL FIELD

The present disclosure is directed generally to wireless communications. Particularly, the present disclosure relates to methods, devices, and systems for configuring a random access channel (RACH) occasion allocation.

BACKGROUND

Wireless communication technologies are moving the world toward an increasingly connected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user equipment and wireless access network nodes (including but not limited to base stations) . A new generation network is expected to provide high speed, low latency and ultra-reliable communication capabilities and fulfill the requirements from different industries and users.

For the 5th Generation mobile communication technology, a base station and/or a user equipment need to configure signal resource for a physical random access channel (PRACH) . There are several issues/problems with the existing system for configuring signal resources for PRACH. For example, some of the issues/problems are associated with new subcarrier spacing (SCS) for a channel bandwidth being wider in high carrier frequency. Another of the issues/problems is, if the new subcarrier spacing is introduced, how a user equipment (or a base station) can confirm a slot number or a subframe number of PRACH slot (s) in a specific subcarrier spacing.

The present disclosure describes various embodiment for configuring a random access channel (RACH) occasion allocation, addressing at least some of issues/problems associated with the existing system to improve the performance of the wireless communication.

SUMMARY

This document relates to methods, systems, and devices for wireless communication, and more specifically, for configuring a random access channel (RACH) occasion allocation.

In one embodiment, the present disclosure describes a method for wireless communication. The method includes configuring, by a base station, a physical random access channel (PRACH) occasion allocation by: mapping, by the base station, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein: P is a positive integer, and the position pattern comprises a position set of {X1, X2, ..., XQ } with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, Xi < Xj, wherein i and j are integers between 1 and Q, inclusive.

In another embodiment, the present disclosure describes a method for wireless communication. The method includes configuring, by a user equipment (UE) , a physical random access channel (PRACH) occasion allocation by: mapping, by the UE, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein: P is a positive integer, and the position pattern comprises a position set of {X1, X2, ..., XQ } with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, Xi < Xj, wherein i and j are integers between 1 and Q, inclusive.

In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory. When the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods.

In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory. When the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods.

In some other embodiments, a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the above methods.

The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an example of a wireless communication system include one wireless network node and one or more user equipment.

FIG. 2 shows an example of a network node.

FIG. 3 shows an example of a user equipment.

FIG. 4 shows a flow diagram of a method for wireless communication.

FIG. 5 shows a flow diagram of a method for wireless communication.

DETAILED DESCRIPTION

The present disclosure will now be described in detail hereinafter with reference to the accompanied drawings, which form a part of the present disclosure, and which show, by way of illustration, specific examples of embodiments. Please note that the present disclosure may, however, be embodied in a variety of different forms and, therefore, the covered or claimed subject matter is intended to be construed as not being limited to any of the embodiments to be set forth below.

Throughout the specification and claims, terms may have nuanced meanings suggested or implied in context beyond an explicitly stated meaning. Likewise, the phrase “in one embodiment” or “in some embodiments” as used herein does not necessarily refer to the same embodiment and the phrase “in another embodiment” or “in other embodiments” as used herein does not necessarily refer to a different embodiment. The phrase “in one implementation” or “in some implementations” as used herein does not necessarily refer to the same implementation and the phrase “in another implementation” or “in other implementations” as used herein does not necessarily refer to a different implementation. It is intended, for example, that claimed subject matter includes combinations of exemplary embodiments or implementations in whole or in part.

In general, terminology may be understood at least in part from usage in context. For example, terms, such as “and” , “or” , or “and/or, ” as used herein may include a variety of meanings that may depend at least in part upon the context in which such terms are used. Typically, “or” if used to associate a list, such as A, B or C, is intended to mean A, B, and C, here used in the inclusive sense, as well as A, B or C, here used in the exclusive sense. In addition, the term “one or more” or “at least one” as used herein, depending at least in part upon context, may be used to describe any feature, structure, or characteristic in a singular sense or may be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as “a” , “an” , or “the” , again, may be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context. In addition, the term “based on” or “determined by” may be understood as not necessarily intended to convey an exclusive set of factors and may, instead, allow for existence of additional factors not necessarily expressly described, again, depending at least in part on context.

The present disclosure describes methods and devices for configuring a random access channel (RACH) occasion allocation.

New generation (NG) mobile communication system are moving the world toward an increasingly connected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user equipment and wireless access network nodes (including but not limited to wireless base stations) . A new generation network is expected to provide high speed, low latency and ultra-reliable communication capabilities and fulfill the requirements from different industries and users.

The present disclosure describes various embodiments for transmitting initial access information to a user equipment. FIG. 1 shows a wireless communication system 100 including a wireless network node 118 and one or more user equipment (UE) 110. The wireless network node may include a network base station, which may be a nodeB (NB, e.g., a gNB) in a mobile telecommunications context. Each of the UE may wirelessly communicate with the wireless network node via one or more radio channels 115. For example, a first UE 110 may wirelessly communicate with a wireless network node 118 via a channel including a plurality of radio channels during a certain period of time. The network base station 118 may configure PRACH transmission parameters to the UE 110. The UE 110 may receive physical random access channel (PRACH) transmission parameters (for example but not limited to, PRACH preamble format, time resources, and frequency resources for PRACH transmission) .

For the 5th Generation mobile communication technology, a base station and/or a user equipment need to configure signal resource for a physical random access channel (PRACH) . There are several issues/problems with the existing system for configuring signal resources for PRACH. For example, some of the issues/problems are associated with new subcarrier spacing (SCS) for a channel bandwidth being wider in high carrier frequency. Another of the issues/problems is how a user equipment (or a base station) can map one or more slot number or one or more subframe number of PRACH slot (s) in a specific subcarrier spacing. Another of the issues/problems is how a user equipment (or a base station) can confirm or configure a slot number or a subframe number of PRACH slot (s) in a specific subcarrier spacing. The present disclosure may address at least some of issues/problems associated with the existing system to improve the performance of the wireless communication.

For 5G NR, in of a first frequency range (FR1) , there may be a parameter specifying one or more subframe number to insure that the UE can confirm the one or more subframe number of PRACH occasion in time domain. In a frequency range (FR2) , there may be a parameter specifying one or more slot number to insure that the UE can confirm the one or more slot number of PRACH occasion in time domain. When a new PRACH subcarrier spacing is introduced, the rule for configuring/mapping the one or more subframe number or the one or more slot number for PRACH may be described in the present disclosure.

In various embodiments, a parameter may be used to specify one or more subframe number. For example, in a random access configuration for FR1 and unpaired spectrum, for one PRACH configuration index, there may be one or more subframe number in a frame. The one or more subframe number may be one or more integer between 0 and 9, inclusive.

In various embodiments, a parameter may be used to specify one or more slot number. For example, in a random access configuration for FR2 and unpaired spectrum, for one PRACH configuration index, there may be one or more slot number. The one or more slot number corresponding to slots in a frame for 60 kHz subcarrier spacing. The one or more slot number may be one or more integer between 0 and 39, inclusive.

In various embodiments, one or more new PRACH subcarrier spacing maybe introduced, a parameter may be used to insure that the UE and/or base station confirm one or more slot number or subframe number of PRACH slot (s) in a specific subcarrier spacing. For example, the parameter may be a pattern parameter for a position pattern comprising Q positions in a specific time duration. In one implementation, the carrier frequency in the various embodiment may be any part or all of the frequency range of a first frequency range (FR1) and/or a second frequency range (FR2) . In another implementation, the carrier frequency in the various embodiment may be a third frequency range (FR3) , for example but not limited, a higher frequency band above FR2, e.g. 52.6 GHz ～ 71 GHz.

FIG. 2 shows an example of electronic device 200 to implement a network base station. The example electronic device 200 may include radio transmitting/receiving (Tx/Rx) circuitry 208 to transmit/receive communication with UEs and/or other base stations. The electronic device 200 may also include network interface circuitry 209 to communicate the base station with other base stations and/or a core network, e.g., optical or wireline interconnects, Ethernet, and/or other data transmission mediums/protocols. The electronic device 200 may optionally include an input/output (I/O) interface 206 to communicate with an operator or the like.

The electronic device 200 may also include system circuitry 204. System circuitry 204 may include processor (s) 221 and/or memory 222. Memory 222 may include an operating system 224, instructions 226, and parameters 228. Instructions 226 may be configured for the one or more of the processors 221 to perform the functions of the network node. The parameters 228 may include parameters to support execution of the instructions 226. For example, parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and/or other parameters.

FIG. 3 shows an example of an electronic device to implement a terminal device 300 (for example, user equipment (UE) ) . The UE 300 may be a mobile device, for example, a smart phone or a mobile communication module disposed in a vehicle. The UE 300 may include communication interfaces 302, a system circuitry 304, an input/output interfaces (I/O) 306, a display circuitry 308, and a storage 309. The display circuitry may include a user interface 310. The system circuitry 304 may include any combination of hardware, software, firmware, or other logic/circuitry. The system circuitry 304 may be implemented, for example, with one or more systems on a chip (SoC) , application specific integrated circuits (ASIC) , discrete analog and digital circuits, and other circuitry. The system circuitry 304 may be a part of the implementation of any desired functionality in the UE 300. In that regard, the system circuitry 304 may include logic that facilitates, as examples, decoding and playing music and video, e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user inputs; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections for, as one example, internet connectivity; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the inputs/output (I/O) interfaces 306 may include a graphical user interface, touch sensitive display, haptic feedback or other haptic output, voice or facial recognition inputs, buttons, switches, speakers and other user interface elements. Additional examples of the I/O interfaces 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headset and microphone input /output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors) , and other types of inputs.

Referring to FIG. 3, the communication interfaces 302 may include a Radio Frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 which handles transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceivers may be wireless transceivers that include modulation /demodulation circuitry, digital to analog converters (DACs) , shaping tables, analog to digital converters (ADCs) , filters, waveform shapers, filters, pre-amplifiers, power amplifiers and/or other logic for transmitting and receiving through one or more antennas, or (for some devices) through a physical (e.g., wireline) medium. The transmitted and received signals may adhere to any of a diverse array of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM) , frequency channels, bit rates, and encodings. As one specific example, the communication interfaces 302 may include transceivers that support transmission and reception under the 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS) , High Speed Packet Access (HSPA) +, 4G /Long Term Evolution (LTE) , and 5G standards. The techniques described below, however, are applicable to other wireless communications technologies whether arising from the 3rd Generation Partnership Project (3GPP) , GSM Association, 3GPP2, IEEE, or other partnerships or standards bodies.

Referring to FIG. 3, the system circuitry 304 may include one or more processors 321 and memories 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to carry out desired functionality for the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G or other data that the UE 300 will send, or has received, through the communication interfaces 302. In various implementations, a system power for the UE 300 may be supplied by a power storage device, such as a battery or a transformer.

The present disclosure describes several below embodiments, which may be implemented, partly or totally, on the network base station and/or the user equipment described above in FIGS. 2-3.

Referring to FIG. 4, the present disclosure describes embodiments of a method 400 for configuring, by a base station, a physical random access channel (PRACH) occasion allocation. The method 400 may include step 410: mapping, by the base station, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein P is a positive integer, and the position pattern comprises a position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.

Referring to FIG. 5, the present disclosure describes embodiments of a method 500 for configuring, by a user equipment (UE) , a physical random access channel (PRACH) occasion allocation. The method 500 may include step 510: mapping, by the UE, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein P is a positive integer, and the position pattern comprises a position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.

In one implementation, the position pattern comprising Q positions is mapped based on at least one of following: a PRACH subcarrier spacing (SCS) , the specific SCS of the reference slot, the specific time duration, and the maximum number of reference slots in the specific time duration.

In another implementation, the PRACH SCS comprises at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*N kHz, wherein N is a positive integer; and the specific SCS of the reference slot comprises at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*M kHz, wherein M is a positive integer.

In another implementation, the specific time duration comprises at least one of the following: 10000 microsecond, 5000 microsecond, 2500 microsecond, 1250 microsecond, 625 microsecond, 312.5 microsecond, or 156.25/L microsecond, wherein L is a positive integer; a subframe duration, a frame, or ten times of a slot duration of a single slot for a SCS being at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*N kHz, wherein N is a positive integer.

In another implementation, the position pattern comprising Q positions is configured by at least one of the following: a parameter configuration table of a physical layer; or a high-layer signaling.

For one example but not limited to, Q may be 1. The position pattern comprises the position set of {X ₁} , X ₁ being an integer between 0 and 40*P -1, inclusive. When P=1, the position set may be, for example but not limited to, {0} , {5} , {23} , or {39} ; when P=2, the position set may be, for example but not limited to, {0} , {5} , {34} , {53} , or {79} ; and when P=3, the position set may be, for example but not limited to, {0} , {5} , {34} , {53} , {87} , or {119} .

For another example but not limited to, Q may be 2. The position pattern comprises the position set of {X ₁, X ₂} , wherein X ₁ and X ₂ are integers between 0 and 40*P -1, inclusive, and X ₁ < X ₂.

For another example but not limited to, Q may be 3. The position pattern comprises the position set of {X ₁, X ₂, X ₃} , wherein: X ₁, X ₂, and X ₃ are integers between 0 and 40*P -1, inclusive, X ₁ < X ₂, and X ₂ < X ₃.

For another example but not limited to, Q may be 10. The position pattern comprises the position set of {X ₁, X ₂, X ₃, X ₄, X ₅, X ₆, X ₇, X ₈, X ₉, X ₁₀} . Any one of the X ₁, X ₂, X ₃, X ₄, X ₅, X ₆, X ₇, X ₈, X ₉, and X ₁₀ is different from the any other value, and all of X ₁, X ₂, X ₃, X ₄, X ₅, X ₆, X ₇, X ₈, X ₉, and X ₁₀ are integers selecting from 0 to 40*P -1, inclusive. For example but not limited to, when P=2, the position set may include {3, 6, 15, 19, 24, 29, 40, 47, 54, 77} .

As one exemplary example for various embodiments, a PRACH SCS is M Hz, and a SCS of reference (PRACH) slot is P Hz, wherein M ≥ P.

A specific time duration is N millisecond (ms) . In some implementations, the specific time duration may refer to as the special time duration.

A max number reference (PRACH) slot (s) which the PRACH occasion allocated in that special time duration is Z, numbered in increasing order from 0 to Z-1, so the reference (PRACH) slot allocation in the specific time duration as following. The reference (PRACH) slot (s) position (s) corresponding values which are not greater than Z includes at least Q position (s) in the specific time duration, wherein 1 ≤ Q ≤ Z.

The present disclosure describes various embodiments, which may be used in paired or unpaired spectrum.

This reference (PRACH) slot (s) position may be given in the parameter configuration table of the physical layer, or given through high-layer signaling, which may be transmitted from a UE to a base station or be transmitted from a base station to a UE. This pattern parameter may be independent of other parameters.

The slot number set or subframe number may be made up of the following combination of numbers or a single number, and the meaning of the number is showed as following.

‘0’ refers to the first position in the specific time duration.

‘1’ refers to the second position in the specific time duration.

‘2’ refers to the third position in the specific time duration.

‘3’ refers to the fourth position in the specific time duration.

‘4’ refers to the fifth position in the specific time duration.

‘5’ refers to the sixth position in the specific time duration.

‘6’ refers to the seventh position in the specific time duration.

‘7’ refers to the eighth position in the specific time duration.

‘8’ refers to the ninth position in the specific time duration.

‘9’ refers to the tenth position in the specific time duration.

‘10’ refers to the eleventh position in the specific time duration.

‘11’ refers to the twelfth position in the specific time duration.

‘12’ refers to the thirteenth position in the specific time duration.

‘13’ refers to the fourteenth position in the specific time duration.

‘14’ refers to the fifteenth position in the specific time duration.

‘15’ refers to the sixteenth position in the specific time duration.

‘16’ refers to the seventeenth position in the specific time duration.

‘17’ refers to the eighteenth position in the specific time duration.

‘18’ refers to the nineteenth position in the specific time duration.

‘19’ refers to the twentieth position in the specific time duration.

‘20’ refers to the twenty-first position in the specific time duration.

‘21’ refers to the twenty-second position in the specific time duration.

‘22’ refers to the twenty-third position in the specific time duration.

‘23’ refers to the twenty-fourth position in the specific time duration.

‘24’ refers to the twenty-fifth position in the specific time duration.

‘25’ refers to the twenty-sixth position in the specific time duration.

‘26’ refers to the twenty-seventh position in the specific time duration.

‘27’ refers to the twenty-eighth position in the specific time duration.

‘28’ refers to the twenty-ninth position in the specific time duration.

‘29’ refers to the thirtieth position in the specific time duration.

‘30’ refers to the thirty-first position in the specific time duration.

‘31’ refers to the thirty-second position in the specific time duration.

‘32’ refers to the thirty-third position in the specific time duration.

‘33’ refers to the thirty-fourth position in the specific time duration.

‘34’ refers to the thirty-fifth position in the specific time duration.

‘35’ refers to the thirty-sixth position in the specific time duration.

‘36’ refers to the thirty-seventh position in the specific time duration.

‘37’ refers to the thirty-eighth position in the specific time duration.

‘38’ refers to the thirty-ninth position in the specific time duration.

‘39’ refers to the fortieth position in the specific time duration.

‘40’ refers to the forty-first position in the specific time duration.

‘41’ refers to the forty-second position in the specific time duration.

‘42’ refers to the forty-third position in the specific time duration.

‘43’ refers to the forty-fourth position in the specific time duration.

‘44’ refers to the forty-fifth position in the specific time duration.

‘45’ refers to the forty-sixth position in the specific time duration.

‘46’ refers to the forty-seventh position in the specific time duration.

‘47’ refers to the forty-eighth position in the specific time duration.

‘48’ refers to the forty-ninth position in the specific time duration.

‘49’ refers to the fiftieth position in the specific time duration.

‘50’ refers to the fifty-first position in the specific time duration.

‘51’ refers to the fifty-second position in the specific time duration.

‘52’ refers to the fifty-third position in the specific time duration.

‘53’ refers to the fifty-fourth position in the specific time duration.

‘54’ refers to the fifty-fifth position in the specific time duration.

‘55’ refers to the fifty-sixth position in the specific time duration.

‘56’ refers to the fifty-seventh position in the specific time duration.

‘57’ refers to the fifty-eighth position in the specific time duration.

‘58’ refers to the fifty-ninth position in the specific time duration.

‘59’ refers to the sixtieth position in the specific time duration.

‘60’ refers to the sixty-first position in the specific time duration.

‘61’ refers to the sixty-second position in the specific time duration.

‘62’ refers to the sixty-third position in the specific time duration.

‘63’ refers to the sixty-fourth position in the specific time duration.

‘62’ refers to the sixty-third position in the specific time duration.

‘63’ refers to the sixty-fourth position in the specific time duration.

‘64’ refers to the sixty-fifth position in the specific time duration.

‘65’ refers to the sixty-sixth position in the specific time duration.

‘66’ refers to the sixty-seventh position in the specific time duration.

‘67’ refers to the sixty-eighth position in the specific time duration.

‘68’ refers to the sixty-ninth position in the specific time duration.

‘69’ refers to the seventieth position in the specific time duration.

‘70’ refers to the seventy-first position in the specific time duration.

‘71’ refers to the seventy-second position in the specific time duration.

‘72’ refers to the seventy-third position in the specific time duration.

‘73’ refers to the seventy-fourth position in the specific time duration.

‘72’ refers to the seventy-third position in the specific time duration.

‘73’ refers to the seventy-fourth position in the specific time duration.

‘74’ refers to the seventy-fifth position in the specific time duration.

‘75’ refers to the seventy-sixth position in the specific time duration.

‘76’ refers to the seventy-seventh position in the specific time duration.

‘77’ refers to the seventy-eighth position in the specific time duration.

‘78’ refers to the seventy-ninth position in the specific time duration.

‘79’ refers to the eightieth position in the specific time duration.

The list may go on; and similarly, ‘639’ refers to the six hundred and forty position in the specific time duration. The unit of the position may be the reference (PRACH) slot (s) ;

In various embodiments, the specific SCS of the reference slot is 60 kHz, and the maximum number of reference slots in the specific time duration is 40. In one implementation, the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 40, inclusive, each member of the position set being an integer between 0 and 39, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *4, {A} *4 + 1, {A} *4 + 2, or {A} *4 + 3. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

As one exemplary example for various embodiments, a reference (PRACH) slot may include 60 kHz. There may be 40 reference (PRACH) slots in a specific time duration, and the specific time duration is a frame.

There may be total 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, or 40 reference (PRACH) slot in the specific time duration.

The position pattern may be any one or any combination of one or more of the following cases.

Case 1: at least first position is included, which means at least {0} in slot number set in the specific time duration.

Case 2: at least second position is included, which means at least {1} in slot number set in the specific time duration.

Case 3: at least third position is included, which means at least {2} in slot number set in the specific time duration.

Case 4: at least fourth position is included, which means at least {3} in slot number set in the specific time duration.

Case 5: at least fifth position is included, which means at least {4} in slot number set in the specific time duration.

The list of cases may go on; and similarly, Case 40: at least forty position is included, which means at least {39} in slot number set in the specific time duration.

Case 41, the slot number set in the specific time duration may include at least one of: {A} *4, or {A} *4+1; or {A} *4+2; or {A} *4+3; or a union of any one or more of the above four sets. In one implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

In various embodiments, the specific SCS of the reference slot is 120 kHz, and the maximum number of reference slots in the specific time duration is 80. In one implementation, the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 80, inclusive, each member of the position set being an integer between 0 and 79, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *8, {A} *8 + 1, {A} *8 + 2, {A} *8 + 3, {A} *8 + 4, {A} *8 + 5, {A} *8 + 6, or {A} *8 + 7. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *2, or {A} *2 + 1. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

In the present disclosure, {1, 3, 5, 7, …, 35, 37, 39} may refer to a position set including all odd integers between 1 and 39, inclusive. {0, 1, 2, 3, …, 37, 38, 39} may refer to a position set including all integers between 0 and 39, inclusive. {3, 5, 7, 9, …21, 23, 25} may refer to a position set including all odd integers between 3 and 25, inclusive.

As one exemplary example for various embodiments, a reference (PRACH) slot may include 120 kHz. There may be 80 reference (PRACH) slots in a specific time duration, and the specific time duration is a frame.

There may be total 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, or 80 reference (PRACH) slot in the specific time duration.

The list of cases may go on; and similarly, Case 80: at least eightieth position is included, which means at least {79} in slot number set in the specific time duration.

Case 81, the slot number set in the specific time duration may include at least one of: {A} *8, {A} *8 + 1, {A} *8 + 2, {A} *8 + 3, {A} *8 + 4, {A} *8 + 5, {A} *8 + 6, {A} *8 + 7, or a union of any one or more of the above eight sets. In one implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

Case 82, the slot number set in the specific time duration may include at least one of: {A} *2, {A} *2 + 1, or a union of any one or more of the above two sets. In one implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

In various embodiments, the specific SCS of the reference slot is 240 kHz, and the maximum number of reference slots in the specific time duration is 160. In one implementation, the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 160, inclusive, each member of the position set being an integer between 0 and 159, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 + 6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, or {A} *16 + 15. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *4, {A} *4 + 1, {A} *4 + 2, or {A} *4 + 3. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

As one exemplary example for various embodiments, a reference (PRACH) slot may include 240 kHz. There may be 160 reference (PRACH) slots in a specific time duration, and the specific time duration is a frame.

There may be total 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, or 160 reference (PRACH) slot (s) in the specific time duration.

The list of cases may go on; and similarly, Case 160: at least one hundred and sixtieth position is included, which means at least {159} in slot number set in the specific time duration.

Case 161, the slot number set in the specific time duration may include at least one of: {A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 + 6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, {A} *16 + 15, or a union of any one or more of the above sixteen sets. In one implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

Case 162, the slot number set in the specific time duration may include at least one of: {A} *4, {A} *4 + 1, {A} *4 + 2, {A} *4 + 3, or a union of any one or more of the above four sets. In one implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

In various embodiments, the specific SCS of the reference slot is 480 kHz, and the maximum number of reference slots in the specific time duration is 320. In one implementation, the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 320, inclusive, each member of the position set being an integer between 0 and 319, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *32, {A} *32 + 1, {A} *32 + 2, {A} *32 + 3, {A} *32 + 4, {A} *32 + 5, {A} *32 + 6, {A} *32 + 7, {A} *32 + 8, {A} *32 + 9, {A} *32 + 10, {A} *32 + 11, {A} *32 + 12, {A} *32 + 13, {A} *32 + 14, {A} *32 + 15, {A} *32 + 16, {A} *32 + 17, {A} *32 + 18, {A} *32 + 19, {A} *32 + 20, {A} *32 + 21, {A} *32 + 22, {A} *32 + 23, {A} *32 + 24, {A} *32 + 25, {A} *32 + 26, {A} *32 + 27, {A} *32 + 28, {A} *32 + 29, {A} *32 + 30, or {A} *32 + 31. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *8, {A} *8 + 1, {A} *8 + 2, {A} *8 + 3, {A} *8 + 4, {A} *8 + 5, {A} *8 + 6, or {A} *8 + 7. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

As one exemplary example for various embodiments, a reference (PRACH) slot may include 480 kHz. There may be 320 reference (PRACH) slots in a specific time duration, and the specific time duration is a frame.

There may be total 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, or 320 reference (PRACH) slot (s) in the specific time duration.

The list of cases may go on; and similarly, Case 320: at least three hundred and twentieth position is included, which means at least {319} in slot number set in the specific time duration.

Case 321, the slot number set in the specific time duration may include at least one of: {A} *32, {A} *32 + 1, {A} *32 + 2, {A} *32 + 3, {A} *32 + 4, {A} *32 + 5, {A} *32 + 6, {A} *32 + 7, {A} *32 + 8, {A} *32 + 9, {A} *32 + 10, {A} *32 + 11, {A} *32 + 12, {A} *32 + 13, {A} *32 + 14, {A} *32 + 15, {A} *32 + 16, {A} *32 + 17, {A} *32 + 18, {A} *32 + 19, {A} *32 + 20, {A} *32 + 21, {A} *32 + 22, {A} *32 + 23, {A} *32 + 24, {A} *32 + 25, {A} *32 + 26, {A} *32 + 27, {A} *32 + 28, {A} *32 + 29, {A} *32 + 30, {A} *32 + 31, or a union of any one or more of the above thirty-two sets. In one implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

Case 322, the slot number set in the specific time duration may include at least one of: {A} *8, {A} *8 + 1, {A} *8 + 2, {A} *8 + 3, {A} *8 + 4, {A} *8 + 5, {A} *8 + 6, {A} *8 + 7, or a union of any one or more of the above eight sets. In one implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

In various embodiments, the specific SCS of the reference slot is 960 kHz, and the maximum number of reference slots in the specific time duration is 640. In one implementation, the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q } with Q positions, Q being an integer between 1 and 640, inclusive, each member of the position set being an integer between 0 and 639, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *64, {A} *64 + 1, {A} *64 + 2, {A} *64 + 3, {A} *64 + 4, {A} *64 + 5, {A} *64 + 6, {A} *64 + 7, {A} *64 + 8, {A} *64 + 9, {A} *64 + 10, {A} *64 + 11, {A} *64 + 12, {A} *64 + 13, {A} *64 + 14, {A} *64 + 15, {A} *64 + 16, {A} *64 + 17, {A} *64 + 18, {A} *64 + 19, {A} *64 + 20, {A} *64 + 21, {A} *64 + 22, {A} *64 + 23, {A} *64 + 24, {A} *64 + 25, {A} *64 + 26, {A} *64 + 27, {A} *64 + 28, {A} *64 + 29, {A} *64 + 30, {A} *64 + 31, {A} *64 + 32, {A} *64 + 33, {A} *64 + 34, {A} *64 + 35, {A} *64 + 36, {A} *64 + 37, {A} *64 + 38, {A} *64 + 39, {A} *64 + 40, {A} *64 + 41, {A} *64 + 42, {A} *64 + 43, {A} *64 + 44, {A} *64 + 45, {A} *64 + 46, {A} *64 + 47, {A} *64 + 48, {A} *64 + 49, {A} *64 + 50, {A} *64 + 51, {A} *64 + 52, {A} *64 + 53, {A} *64 + 54, {A} *64 + 55, {A} *64 + 56, {A} *64 + 57, {A} *64 + 58, {A} *64 + 59, {A} *64 + 60, {A} *64 + 61, {A} *64 + 62, or {A} *64 + 63. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

In another implementation, the position pattern comprises the position set comprising at least one of the following: {A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 + 6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, or {A} *16 + 15. In another implementation, the position pattern comprises the position set comprising a combination of any one or more of above position set. In another implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

As one exemplary example for various embodiments, a reference (PRACH) slot may include 960 kHz. There may be 640 reference (PRACH) slots in a specific time duration, and the specific time duration is a frame.

There may be total 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 44 6, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591, 592, 593, 594, 595, 596, 597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, or 640 reference (PRACH) slot (s) in the specific time duration.

The list of cases may go on; and similarly, Case 640: at least six hundred and fortieth position is included, which means at least {639} in slot number set in the specific time duration.

Case 641, the slot number set in the specific time duration may include at least one of: {A} *64, {A} *64 + 1, {A} *64 + 2, {A} *64 + 3, {A} *64 + 4, {A} *64 + 5, {A} *64 + 6, {A} *64 + 7, {A} *64 + 8, {A} *64 + 9, {A} *64 + 10, {A} *64 + 11, {A} *64 + 12, {A} *64 + 13, {A} *64 + 14, {A} *64 + 15, {A} *64 + 16, {A} *64 + 17, {A} *64 + 18, {A} *64 + 19, {A} *64 + 20, {A} *64 + 21, {A} *64 + 22, {A} *64 + 23, {A} *64 + 24, {A} *64 + 25, {A} *64 + 26, {A} *64 + 27, {A} *64 + 28, {A} *64 + 29, {A} *64 + 30, {A} *64 + 31, {A} *64 + 32, {A} *64 + 33, {A} *64 + 34, {A} *64 + 35, {A} *64 + 36, {A} *64 + 37, {A} *64 + 38, {A} *64 + 39, {A} *64 + 40, {A} *64 + 41, {A} *64 + 42, {A} *64 + 43, {A} *64 + 44, {A} *64 + 45, {A} *64 + 46, {A} *64 + 47, {A} *64 + 48, {A} *64 + 49, {A} *64 + 50, {A} *64 + 51, {A} *64 + 52, {A} *64 + 53, {A} *64 + 54, {A} *64 + 55, {A} *64 + 56, {A} *64 + 57, {A} *64 + 58, {A} *64 + 59, {A} *64 + 60, {A} *64 + 61, {A} *64 + 62, {A} *64 + 63, or a union of any one or more of the above sixty four sets. In one implementation, {A} may include at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .

Case 642, the slot number set in the specific time duration may include at least one of: {A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 + 6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, {A} *16 + 15, or a union of any one or more of the above sixteen sets. In one implementation, {A} may include at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .

The present disclosure describes methods, apparatus, and computer-readable medium for wireless communication. The present disclosure addressed the issues with configuring a random access channel (RACH) occasion allocation. The methods, devices, and computer-readable medium described in the present disclosure may facilitate the performance of wireless transmission between a user equipment and a base station, thus improving efficiency and overall performance. The methods, devices, and computer-readable medium described in the present disclosure may improves the overall efficiency of the wireless communication systems.

Reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that may be realized with the present solution should be or are included in any single implementation thereof. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussions of the features and advantages, and similar language, throughout the specification may, but do not necessarily, refer to the same embodiment.

Furthermore, the described features, advantages and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. One of ordinary skill in the relevant art will recognize, in light of the description herein, that the present solution can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

A method for wireless communication, comprising:

configuring, by a base station, a physical random access channel (PRACH) occasion allocation by:

mapping, by the base station, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein:

P is a positive integer, and

the position pattern comprises a position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
A method for wireless communication, comprising:

configuring, by a user equipment (UE) , a physical random access channel (PRACH) occasion allocation by:

mapping, by the UE, a position pattern comprising Q positions in a specific time duration, a specific subcarrier spacing (SCS) of a reference slot being 60*P kHz, a maximum number of reference slots in the specific time duration being 40*P, wherein:

P is a positive integer, and

the position pattern comprises a position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 40*P, inclusive, each member of the position set being an integer between 0 and 40*P -1, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
The method according to any of claims 1-2, wherein:

the position pattern comprising Q positions is mapped based on at least one of following:

a PRACH subcarrier spacing (SCS) ,

the specific SCS of the reference slot,

the specific time duration, and

the maximum number of reference slots in the specific time duration.
The method according to claim 3, wherein:

the PRACH SCS comprises at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*N kHz, wherein N is a positive integer; and

the specific SCS of the reference slot comprises at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*M kHz, wherein M is a positive integer.
The method according to claim 3, wherein:

the specific time duration comprises at least one of the following:

10000 microsecond, 5000 microsecond, 2500 microsecond, 1250 microsecond, 625 microsecond, 312.5 microsecond, or 156.25/L microsecond, wherein L is a positive integer;

a subframe duration;

a frame; or

ten times of a slot duration of a single slot for a SCS being at least one of the following: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960*N kHz, wherein N is a positive integer.
The method according to claim 3, wherein:

the position pattern comprising Q positions is configured by at least one of the following:

a parameter configuration table of a physical layer; or

a high-layer signaling.
The method according to claim 3, wherein:

Q is 1; and

the position pattern comprises the position set of {X ₁} , X ₁ being an integer between 0 and 40*P -1, inclusive.
The method according to claim 3, wherein:

Q is 2; and

the position pattern comprises the position set of {X ₁, X ₂} , wherein X ₁ and X ₂ are integers between 0 and 40*P -1, inclusive, and X ₁ < X ₂.
The method according to claim 3, wherein:

Q is 3; and

the position pattern comprises the position set of {X ₁, X ₂, X ₃} , wherein:

X ₁, X ₂, and X ₃ are integers between 0 and 40*P -1, inclusive,

X ₁ < X ₂, and

X ₂ < X ₃.
The method according to claim 3, wherein:

the specific SCS of the reference slot is 60 kHz;

the maximum number of reference slots in the specific time duration is 40; and

the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 40, inclusive, each member of the position set being an integer between 0 and 39, inclusive, and X _i < X _j for i < j, wherein i and j are integers between 1 and Q, inclusive.
The method according to claim 10, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *4,

{A} *4 + 1,

{A} *4 + 2, or

{A} *4 + 3, wherein {A} comprises at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .
The method according to claim 3, wherein:

the specific SCS of the reference slot is 120 kHz;

the maximum number of reference slots in the specific time duration is 80; and

the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 80, inclusive, each member of the position set being an integer between 0 and 79, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
The method according to claim 12, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *8,

{A} *8 + 1,

{A} *8 + 2,

{A} *8 + 3,

{A} *8 + 4,

{A} *8 + 5,

{A} *8 + 6, or

{A} *8 + 7, wherein {A} comprises at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .
The method according to claim 12, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *2, or

{A} *2 + 1, wherein {A} comprises at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .
The method according to claim 3, wherein:

the specific SCS of the reference slot is 240 kHz;

the maximum number of reference slots in the specific time duration is 160; and

the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 160, inclusive, each member of the position set being an integer between 0 and 159, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
The method according to claim 15, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 +6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, or {A} *16 + 15, wherein {A} comprises at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .
The method according to claim 15, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *4,

{A} *4 + 1,

{A} *4 + 2, or

{A} *4 + 3, wherein {A} comprises at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .
The method according to claim 3, wherein:

the specific SCS of the reference slot is 480 kHz;

the maximum number of reference slots in the specific time duration is 320; and

the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 320, inclusive, each member of the position set being an integer between 0 and 319, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
The method according to claim 18, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *32, {A} *32 + 1, {A} *32 + 2, {A} *32 + 3, {A} *32 + 4, {A} *32 + 5, {A} *32 +6, {A} *32 + 7, {A} *32 + 8, {A} *32 + 9, {A} *32 + 10, {A} *32 + 11, {A} *32 + 12, {A} *32 + 13, {A} *32 + 14, {A} *32 + 15, {A} *32 + 16, {A} *32 + 17, {A} *32 + 18, {A} *32 + 19, {A} *32 + 20, {A} *32 + 21, {A} *32 + 22, {A} *32 + 23, {A} *32 + 24, {A} *32 + 25, {A} *32 + 26, {A} *32 + 27, {A} *32 + 28, {A} *32 + 29, {A} *32 + 30, or {A} *32 + 31, wherein {A} comprises at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .
The method according to claim 18, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *8,

{A} *8 + 1,

{A} *8 + 2,

{A} *8 + 3,

{A} *8 + 4,

{A} *8 + 5,

{A} *8 + 6, or

{A} *8 + 7, wherein {A} comprises at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .
The method according to claim 3, wherein:

the specific SCS of the reference slot is 960 kHz;

the maximum number of reference slots in the specific time duration is 640; and

the position pattern comprises the position set of {X ₁, X ₂, ..., X _Q} with Q positions, Q being an integer between 1 and 640, inclusive, each member of the position set being an integer between 0 and 639, inclusive, and when i < j, X _i < X _j, wherein i and j are integers between 1 and Q, inclusive.
The method according to claim 21, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *64, {A} *64 + 1, {A} *64 + 2, {A} *64 + 3, {A} *64 + 4, {A} *64 + 5, {A} *64 +6, {A} *64 + 7, {A} *64 + 8, {A} *64 + 9, {A} *64 + 10, {A} *64 + 11, {A} *64 + 12, {A} *64 + 13, {A} *64 + 14, {A} *64 + 15, {A} *64 + 16, {A} *64 + 17, {A} *64 + 18, {A} *64 + 19, {A} *64 + 20, {A} *64 + 21, {A} *64 + 22, {A} *64 + 23, {A} *64 + 24, {A} *64 + 25, {A} *64 + 26, {A} *64 + 27, {A} *64 + 28, {A} *64 + 29, {A} *64 + 30, {A} *64 + 31, {A} *64 + 32, {A} *64 + 33, {A} *64 + 34, {A} *64 + 35, {A} *64 + 36, {A} *64 + 37, {A} *64 + 38, {A} *64 + 39, {A} *64 + 40, {A} *64 + 41, {A} *64 + 42, {A} *64 + 43, {A} *64 + 44, {A} *64 + 45, {A} *64 + 46, {A} *64 + 47, {A} *64 + 48, {A} *64 + 49, {A} *64 + 50, {A} *64 + 51, {A} *64 + 52, {A} *64 + 53, {A} *64 + 54, {A} *64 + 55, {A} *64 + 56, {A} *64 + 57, {A} *64 + 58, {A} *64 + 59, {A} *64 + 60, {A} *64 + 61, {A} *64 + 62, or {A} *64 + 63, wherein {A} comprises at least one of the following: {0} , {1} , {2} , {3} , {4} , {5} , {6} , {7} , {8} , {9} , {1, 6} , {4, 9} , {3, 8} , {2, 7} , {8, 9} , {4, 8, 9} , {3, 4, 9} , {3, 4, 8, 9} , {6, 7, 8, 9} , {1, 4, 6, 9} , {1, 3, 5, 7, 9} , {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , {2, 3, 4, 7, 8, 9} , {7, 9} , {1, 4, 7} , {2, 5, 8} , {3, 6, 9} , {0, 2, 4, 6, 8} , or {2, 6, 9} .
The method according to claim 21, wherein:

the position pattern comprises the position set comprising at least one of the following:

{A} *16, {A} *16 + 1, {A} *16 + 2, {A} *16 + 3, {A} *16 + 4, {A} *16 + 5, {A} *16 +6, {A} *16 + 7, {A} *16 + 8, {A} *16 + 9, {A} *16 + 10, {A} *16 + 11, {A} *16 + 12, {A} *16 + 13, {A} *16 + 14, or {A} *16 + 15, wherein {A} comprises at least one of the following: {4, 9, 14, 19, 24, 29, 34, 39} , {3, 7, 11, 15, 19, 23, 27, 31, 35, 39} , {9, 19, 29, 39} , {7, 15, 23, 31, 39} , {19, 39} , {24, 29, 34, 39} , {3, 5, 7, 9, 11, 13} , {23, 27, 31, 35, 39} , {13, 14, 15, 29, 30, 31, 37, 38, 39} , {1, 3, 5, 7, …, 35, 37, 39} , {0, 1, 2, 3, …, 37, 38, 39} , {3, 5, 7} , {9, 11, 13} , {17, 19, 37, 39} , {9, 11, 13, 15, 17, 19} , or {3, 5, 7, 9, …21, 23, 25} .
A wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement a method recited in any of claims 1 to 23.
A computer program product comprising a computer-readable program medium code stored thereupon, the computer-readable program medium code, when executed by a processor, causing the processor to implement a method recited in any of claims 1 to 23.