Methods, devices, and systems for configuring transmission sequence
By configuring a transmission sequence that accounts for muted resources on PUSCH, the method optimizes resource utilization and enhances wireless communication efficiency and performance.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ZTE CORP
- Filing Date
- 2024-11-07
- Publication Date
- 2026-05-15
AI Technical Summary
Existing wireless communication systems face reduced transmission efficiency due to muted resources on physical uplink shared channels (PUSCH), leading to inefficiencies in mapping modulation symbols and phase tracking reference signals (PTRS) when handling muting resources.
Configuring a transmission sequence that includes determining modulation symbols and PTRS based on scheduling information, performing discrete Fourier transform (DFT) operations, and mapping these signals while avoiding muted resources, thereby optimizing resource utilization.
Enhances transmission efficiency and performance by effectively utilizing available resources and improving wireless communication speed and reliability.
Smart Images

Figure CN2024130376_15052026_PF_FP_ABST
Abstract
Description
METHODS, DEVICES, AND SYSTEMS FOR CONFIGURING TRANSMISSION SEQUENCETECHNICAL FIELD
[0001] The present disclosure is directed generally to wireless communications. Particularly, the present disclosure relates to methods, devices, and systems for configuring a transmission sequence.BACKGROUND
[0002] 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.
[0003] In some wireless communication systems, some resources of a transmission channel, for example, a physical uplink shared channel (PUSCH) , may be muted, wherein nothing is scheduled to be transmitted on these resources. Some method of handling these muting resources may lead to reduced transmission efficiency: that a number of modulation symbols that can be mapped to the PUSCH resource is reduced. There are some issues / problems associated with how to configure a transmission sequence for improving transmission efficiency with respect to muting resources. For example, how to apply the muting resource to the PUSCH; and / or when phase tracking reference signal (PTRS) is transmitted together with the PUSCH, how to map the PTRS to the PUSCH resource with muting resource, and / or how to process the PTRS mapped to the PUSCH resource with muting resource.
[0004] The present disclosure describes various embodiments for configuring a transmission sequence, addressing at least one of the issues / problems discussed in the present disclosure, increasing efficiency of utilizing transmission resources, increasing performance of wireless communication, and / or improving the field of telecommunication.SUMMARY
[0005] This document relates to methods, systems, and devices for wireless communication, and more specifically, for configuring a transmission sequence. The various embodiments in the present disclosure may be beneficial to enhance efficiency of utilizing transmission resources, increase the overall transmission efficiency and speed, and / or boost performance of the wireless communication.
[0006] In one embodiment, the present disclosure describes a method for wireless communication, performed by a wireless communication device. The method includes receiving, by a user equipment (UE) from a base station, information for scheduling a physical uplink shared channel (PUSCH) ; determinizing, by the UE based on the information for scheduling the PUSCH, a sequence for transmitting in the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; and transmitting, by the UE, the sequence in the PUSCH to the base station.
[0007] In one embodiment, the present disclosure describes another method for wireless communication, performed by a wireless communication node. The method includes sending, by a base station to a user equipment (UE) , information for scheduling a physical uplink shared channel (PUSCH) , so that the UE is configured to determine a sequence for transmitting in the PUSCH based on the information for scheduling the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; and receiving, by the base station, the sequence in the PUSCH from the UE.
[0008] In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and at least one processing circuitry in communication with the memory. When the at least one processing circuitry executes the instructions, the at least one processing circuitry is configured to carry out any of the methods above and / or in the present disclosure.
[0009] In some other embodiments, a device for wireless communication may include a memory storing instructions and at least one processing circuitry in communication with the memory. When the at least one processing circuitry executes the instructions, the at least one processing circuitry is configured to carry out any of the methods above and / or in the present disclosure.
[0010] In some other embodiments, a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the methods above and / or in the present disclosure. The computer-readable medium may be a non-transitory computer-readable medium.
[0011] In some other embodiments, a computer program product comprising a computer-readable program medium code stored thereupon, the computer-readable program medium code, when executed by at least one processor, causing the at least one processor to implement any of the methods above and / or in the present disclosure. The computer program product may be a non-transitory computer program product. The computer-readable program medium code may be a non-transitory computer-readable program medium code.
[0012] 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
[0013] FIG. 1 shows an example of a wireless communication system include one wireless network node and one or more user equipment.
[0014] FIG. 2 shows an example of a network node.
[0015] FIG. 3 shows an example of a user equipment.
[0016] FIG. 4A shows a flow diagram of a method for wireless communication.
[0017] FIG. 4B shows a flow diagram of another method for wireless communication.
[0018] FIG. 5 shows a schematic diagram of an embodiment in the present disclosure.DETAILED DESCRIPTION
[0019] 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.
[0020] 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.
[0021] 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.
[0022] The present disclosure describes methods and devices for configuring a transmission sequence.
[0023] The 5th Generation mobile communication technology (5G) or further 6th Generation mobile communication technology (6G) face more and more demands. Based on the current development trend, 5G systems are developing supports on features of enhanced mobile broadband (eMBB) , ultra-reliable low-latency communication (URLLC) , and massive machine-type communication (mMTC) . 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.
[0024] In some wireless communication systems, some resources of a transmission channel, for example, a physical uplink shared channel (PUSCH) , may be muted, wherein nothing is scheduled to be transmitted on these resources. Some method of handling these muting resources may lead to reduced transmission efficiency: that a number of modulation symbols that can be mapped to the PUSCH resource is reduced. There are some issues / problems associated with how to configure a transmission sequence for improving transmission efficiency with respect to muting resources. For example, how to apply the muting resource to the PUSCH; and / or when phase tracking reference signal (PTRS) is transmitted together with the PUSCH, how to map the PTRS to the PUSCH resource with muting resource, and / or how to process the PTRS mapped to the PUSCH resource with muting resource.
[0025] FIG. 1 shows a wireless communication system 100 including a wireless network node (or a wireless communication node) 118 and one or more user equipment (UE) (or a wireless communication device or terminal) 110. The wireless network node may include a network base station, which may be a nodeB (NB, e.g., a gNB, eNB, or xNB) 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 downlink / uplink communication. 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 send high layer signaling to the UE 110. The high layer signaling may include configuration information for communication between the UE and the base station. In one implementation, the high layer signaling may include a radio resource control (RRC) message.
[0026] In some embodiments, a network node (e.g., a base station) may schedule at least one channel for a UE. For example, the network may transmit the scheduling information to the UE. The scheduling information may schedule at least one channel for the UE. The network may receive the at least one channel from the UE. From the UE perspective, the UE may receive the scheduling information from the network. The UE may transmit the at least one channel to the network. The scheduling information may include at least one of downlink control information (DCI) , medium access control (MAC) control element (CE) , or RRC signaling. The channel may include at least one of physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) . In this disclosure, the PUSCH may be used as a non-limiting example to describe some of the embodiments and / or implementations. These embodiments and / or implementation may be applied to PUCCH by replacing PUSCH with PUCCH.
[0027] In addition or alternatively, the scheduling information may schedule at least one PDSCH for the UE. The network may transmit the at least one PDSCH to the UE. From the UE perspective, the UE may receive the at least one PDSCH from the network. The embodiments and / or implementations that are described in the present disclosure may be applied to PDSCH by replacing PUSCH with PDSCH.
[0028] In some implementations, the PUSCH processing may include at least transform precoding. The network may configure that whether the transform precoding is enabled for the UE. In the event that the transform precoding may be enabled, the UE may perform transform precoding for the PUSCH or for the modulation symbols (also called complex-valued symbols) . The modulation symbol may include the modulation symbol of the PUSCH or the modulation symbol of the information carried by the PUSCH. The discrete Fourier transform (DFT) operation may be performed for the modulation symbols. The DFT size (e.g., the number of samples or points in the DFT operation) may be the number of the sub-carriers of the PUSCH. In the frequency domain, one sub-carrier may also be referred to as one resource element (RE) . To illustrate as a non-limiting example, assuming that the modulation symbols (e.g., the modulation symbols before DFT operation) may include x (0) , x (1) , x (2) , x (3) , …, x (N-1) , the DFT operation may be where y(0) , y (1) , y (2) , y (3) , …, y (N-1) are the output complex-valued symbols of the DFT operation, e is the natural constant, j is the imaginary unit, N is the DFT size.
[0029] In some implementations, the network may configure the phase tracking reference signal (PTRS) for the UE. The PTRS may be on (or transmitted on) the one or more OFDM symbols of the PUSCH. The UE may transmit the PTRS and / or the PUSCH to the network. In the frequency domain, the PTRS may be mapped to the one or more REs of the PUSCH.
[0030] In some implementations, the network may configure transmission muting (e.g., UL muting) for the UE. The network may configure a muting resource (or unavailable resource, which is represented by muting resource in this disclosure) for the UE. The muting resource may be included in the PUSCH resource. In the time domain, the muting resource may include one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols. In the frequency domain, the muting resource may include one or more resource elements (REs) , or resource blocks (RBs) . The time domain resource and / or the frequency domain resource of the muting resource may be configured by the network or specified by the protocol. The muting resource is not the available resource for PUSCH transmission. When the UE map the modulation symbols (or complex-valued symbols) or the reference signal (e.g., PTRS) to the PUSCH resource, the muting resource may be skipped. That is to say, the UE may map the modulation symbols (or complex-valued symbols) or the reference signal (e.g., PTRS) to the PUSCH resource excluding the muting resource.
[0031] In some implementations, the DFT size may be the number of available RE of the PUSCH. The available resource (e.g., RE) of the PUSCH may be the PUSCH resource (e.g., RE) excluding the muting resource (e.g., RE) . In addition or alternatively, the available resource (e.g., RE) of the PUSCH may be the resource that can be used for PUSCH transmission or used for mapping modulation symbols (or complex-valued symbols) or the reference signal (e.g., PTRS) . Therefore, the number of available REs of the PUSCH may be the number of RE of the PUSCH minus the number of the muting REs. In some implementations, there may be no muting resource in one OFDM symbol. All the PUSCH resources may be available. The number of the muting REs may be zero. The number of available REs of the PUSCH may be the number of REs of the PUSCH. The DFT size may be determined OFDM symbol by OFDM symbol. For an OFDM symbol, the DFT size may be the number of the available REs of the PUSCH in this OFDM symbol. For different OFDM symbols, the DFT size may be different.
[0032] In some implementations, the network may configure at least one first UL sub-band for the UE. In the frequency domain, the first UL sub-band may include one or more RBs or REs. The first UL sub-band (e.g., the frequency resource of the first UL sub-band) may be configured by the network or specified by the protocol. In addition or alternatively, the first UL sub-band may be the intersection between a second UL sub-band and an active UL bandwidth part (BWP) in the frequency domain. The second UL sub-band may be a cell-specific UL sub-band. The second UL sub-band may be configured by the network or specified by the protocol. The network may configure one or more BWPs for the UE. At a time, only one BWP may be active, and the active BWP may be indicated by DCI or RRC signaling. Only the resource within the first UL sub-band may be used for PUSCH transmission. The PUSCH resource may overlap with the first UL sub-band partially or fully in the frequency domain. The overlapped resource (e.g., the PUSCH resource within the first UL sub-band) may be able to be used for PUSCH transmission. In this disclosure, the PUSCH resource may include the PUSCH resource within the first UL sub-band. In addition or alternatively, the OFDM symbol may include a sub-band full duplex (SBFD) symbol or a non-SBFD symbol. The SBFD symbol or non-SBFD symbol may be configured by the network. When the PUSCH is within or on the SBFD symbol (s) , the PUSCH resource (e.g., the PUSCH resource used for determining the number of PTRS group, the number of samples per PTRS group, the number of modulation symbols, the number of samples of the PTRS in the first sequence, or the position of the PTRS) may be the PUSCH resource within the first UL sub-band. When the PUSCH is within or on the non-SBFD symbol (s) , the PUSCH resource (e.g., the PUSCH resource used for determining the number of PTRS group, the number of samples per PTRS group, the number of modulation symbols, the number of samples of the PTRS in the first sequence, or the position of the PTRS) may be configured (or indicated) by the network, e.g., the configured (or indicated) resource. In other words, the PUSCH resource may be the PUSCH resource within the first UL sub-band, if any, and the PUSCH resource outside the first UL sub-band, if any. For example, the first UL sub-band may include 50 RBs, starting from RB 30 to RB 79. The PUSCH resource configure by the network may include 25 RBs starting RB 60 to RB 84. For the PUSCH resource, only 20 RBs (e.g., starting RB 60 to RB 79) may be within the first UL sub-band and 5 RBs (e.g., starting RB 80 to RB 84) may not be within the first UL sub-band. When the PUSCH is within or on the SBFD symbol (s) , the PUSCH resource may include 20 RBs in the following embodiments. When the PUSCH is within or on the non-SBFD symbol (s) , the PUSCH resource may include 25 RBs in the following embodiments.
[0033] In some embodiments, there may be one or more modulation symbols for the PUSCH. The one or more modulation symbols may be obtained by performing modulation. The one or more modulation symbols may be divided into one or more set. Each set may correspond to one OFDM symbol. Each set may include one or more modulation symbols. The number of modulation symbols in the set may depend on at least one of the frequency resource of the PUSCH, the available frequency resource of the PUSCH, or the number of sample of the PTRS. For example, the number of the modulation symbols in the set may depend on at least one of the number of the REs of the PUSCH, the number of the available REs of the PUSCH, or the number of samples of the PTRS in the OFDM corresponding to this set. In some implementations, the number of modulation symbols in the set may be the number of available REs of the PUSCH minus the number the samples of the PTRS. In some implementations, the number of modulation symbols in the set may be the number of REs of the PUSCH minus the number the samples of the PTRS.
[0034] 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.
[0035] 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 124 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.
[0036] 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.
[0037] 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) , 5G standards, 6G, and / or any further generation 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.
[0038] 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, 6G, or other data that the UE 300 may 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.
[0039] The present disclosure describes various embodiment for configuring a transmission sequence, which may be implemented, partly or totally, by the network base station and / or the user equipment described above in FIGs. 2-3. The various embodiments in the present disclosure may enable efficient wireless transmission in the telecommunication system, which may increase the resource utilization efficiency and / or boost wireless communication performance.
[0040] Referring to FIG. 4A, the present disclosure describes various embodiments of a method 400 for wireless communication. The method 400 may be performed by a wireless communication device (e.g., a user equipment) . The method 400 may include a portion or all of the following: step 410, receiving, by a user equipment (UE) from a base station, information for scheduling a physical uplink shared channel (PUSCH) ; step 420, determinizing, by the UE based on the information for scheduling the PUSCH, a sequence for transmitting in the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; and / or step 430, transmitting, by the UE, the sequence in the PUSCH to the base station.
[0041] Referring to FIG. 4B, the present disclosure describes various embodiments of a method 450 for wireless communication. The method 450 may be performed by a wireless communication node (e.g., a base station or a radio access network (RAN) ) . The method 450 may include a portion or all of the following: step 460, sending, by a base station to a user equipment (UE) , information for scheduling a physical uplink shared channel (PUSCH) , so that the UE is configured to determine a sequence for transmitting in the PUSCH based on the information for scheduling the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; and / or step 470, receiving, by the base station, the sequence in the PUSCH from the UE.
[0042] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the PUSCH comprises a muting resource comprising at least one symbol in a time domain and at least one resource element (RE) in the frequency domain; the at least one modulation symbol comprises a number of modulation symbols; the at least one PTRS comprises a number of PTRS samples; and / or the modulation symbols and the PTRS samples are concatenated to form the sequence based on a position of each PTRS sample in the PTRS samples. In the present disclosure, PTRS samples may be referred as samples of PTRS.
[0043] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, before transmitting the sequence, the UE performs a discrete Fourier transform (DFT) operation on the sequence to obtain a DFT-ed sequence; and / or the UE transmits the DFT-ed sequence to the base station. In some implementations, the DFT-ed sequence is a processed sequence after a DFT operation is perform on it.
[0044] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the number of the PTRS samples in the sequence or a position of each PTRS sample in the sequence are determined based on at least one of the following: a number of PTRS groups, a number of PTRS samples per PTRS group, a frequency resource of the PUSCH, an available frequency resource of the PUSCH, and / or a factor.
[0045] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, when an orthogonal frequency-division multiplexing (OFDM) symbol in the PUSCH includes muting resource, the available frequency resource of the PUSCH is determined as the frequency resource of the PUSCH excluding the muting resource.
[0046] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, when an OFDM symbol in the PUSCH does not include muting resource, the available frequency resource of the PUSCH is determined as all the frequency resource of the PUSCH.
[0047] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the factor is determined as a ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH over all available OFDM symbols in the PUSCH.
[0048] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the factor is determined as a ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH in each available OFDM symbol in the PUSCH,
[0049] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, when an OFDM symbol in the PUSCH includes muting resource, the factor is larger than one; and / or when an OFDM symbol in the PUSCH does not include muting resource, the factor is equal to one.
[0050] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the position of each PTRS sample in the sequence is determined based on at least one of the following: the number of PTRS groups, the number of PTRS samples per PTRS group, and / or the frequency resource of the PUSCH.
[0051] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the position of each PTRS sample in the sequence is determined based on at least one of the following: the number of PTRS groups, the number of PTRS samples per PTRS group, and / or the available frequency resource of the PUSCH.
[0052] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the position of each PTRS sample in the sequence is determined based on at least one of the following: the number of PTRS groups, the number of PTRS samples per PTRS group, the frequency resource of the PUSCH, and / or the factor.
[0053] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the frequency resource of the PUSCH comprises a number of resource elements (REs) of the PUSCH.
[0054] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the position of each PTRS sample in the sequence is determined based on at least one of the following: the number of PTRS groups, the number of PTRS samples per PTRS group, the frequency resource of the PUSCH, and / or the available frequency resource of the PUSCH.
[0055] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the position of each PTRS sample in the sequence is determined according to V mol N, wherein: V is a set of values that are determined based on the number of PTRS groups, the number of PTRS samples per PTRS group, and the frequency resource of the PUSCH, N is a number of REs in the available frequency resource of the PUSCH, and mol is a modulo operator for obtaining a remainder of a division.
[0056] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, in case any determined position of a corresponding PTRS sample exceeding a size of the DFT operation or a number of REs in the available frequency resource of the PUSCH, the corresponding PTRS sample is dropped from being included in the sequence.
[0057] In some implementations, optionally or additional to any one or any combinations of one or more implementations or embodiments in the present disclosure, the number of the PTRS samples in the sequence is determined according to one of the following: a product of the number of the PTRS groups and the number of PTRS samples per PTRS group; and / or a subtraction result of the product of the number of the PTRS groups and the number of PTRS samples per PTRS group minus a number of all dropped PTRS samples.
[0058] The present disclosure describes various exemplary embodiments and / or implementations for configuring a transmission sequence in a wireless communication system, and the exemplary embodiments merely serve as examples and do not pose limitations. Any steps and / or operations in one same embodiment / implementation or more than one different embodiments / implementation in the present disclosure may be combined or arranged in any amount or order, as desired. Two or more of the steps and / or operations may be performed in parallel. Embodiments and implementations in the disclosure may be used separately or combined in any order. Further, each of the methods (or embodiments) may be implemented by processing circuitry (e.g., one or more processors or one or more integrated circuits) .
[0059] In some implementations, the transform precoding may be enabled. The PTRS (or the PTRS sequence, or PTRS modulation sequence, or PTRS sample where each can be represented by PTRS in this disclosure) may be inserted to the one or more modulation symbols (e.g., one or more modulation symbols in one set) . In addition or alternatively, the PTRS and the one or more modulation symbols (e.g., one or more modulation symbols in one set) may be concatenated. A first sequence may be obtained by inserting PTRS or concatenating the PTRS and the modulation symbols. The first sequence may include one or more elements. One element may include the PTRS, or modulation symbol. The PTRS may be put on the specific position of the first sequence. The DFT operation may be performed for the first sequence. In some implementations, the number of samples of the PTRS, or PTRS position may be determined based on at least one of the number of PTRS groups, the number of samples per PTRS group, the frequency resource of the PUSCH, the available frequency resource of the PUSCH, or a first factor. For example, the number of samples of the PTRS, or PTRS position may be determined based on at least one of the number of PTRS groups, the number of samples per PTRS group, the number of the RE of the PUSCH, the number of the available frequency resource of the PUSCH, or a first factor.
[0060] In some implementations, the position in the first sequence may be expressed by the element index of the first sequence. The element index may also be referred to as index for short. For example, the first sequence including M elements may include z0, z1, z2, z3, …, zM-1, where 0, 1, 2, …, M-1 may be the element index. The PTRS may have the index 0 and it means that the PTRS is the first element (e.g., z0) in the first sequence. The PTRS may have the index 1 and it means that the PTRS is the second element (e.g., z1) in the first sequence, and so on. The PTRS position may be the corresponding element index.
[0061] In some implementations, the first factor may be the ratio of the PUSCH resource (e.g., the number of the resource (e.g., REs or RBs) of the PUSCH) to the available PUSCH resource (e.g., the number of available resource (e.g., REs or RBs) of the PUSCH) . In addition or alternatively, the first factor may be the ratio of PUSCH resource (e.g., the number of the resource (e.g., REs or RBs) of the PUSCH) to the available resource (e.g., the number of available resource (e.g., REs or RBs) of the PUSCH) in one OFDM symbol. The available resource may be the PUSCH resource in the OFDM symbol excluding the muting resource. In some implementations, the first factor may be determined on the level of individual OFDM symbol, i.e., one OFDM symbol by one OFDM symbol. For different OFDM symbols, the corresponding first factor may be different. If there is no muting resource, all the PUSCH resources may be available. The first factor may be 1. Assuming half of the PUSCH resource is muting resource, the first factor may be 2 (obtained by ) . Assuming one third of the PUSCH resource is muting resource, the first factor may be 3 (obtained by ) . In some implementations, the first factor may be determined for the PUSCH. There may be only one first factor value for the PUSCH. If there may be at least one muting RE in the PUSCH, the first factor may be the ratio of the PUSCH resource to the available resource.
[0062] In some implementations, the number of PTRS groups, or the number of samples (or referred as PTRS samples) per PTRS group may be configured by the network or depend on the frequency resource of the PUSCH (e.g., the number of the RBs or REs of the PUSCH) or the available frequency resource of the PUSCH (e.g., the number of available RBs or REs of the PUSCH) . To illustrate as a non-limiting example, the relationship between the number of PTRS groups or the number of samples per PTRS group and the number of RBs of the PUSCH is shown in Table 1. NRB is the number of RB of the PUSCH. If the number of RBs of the PUSCH is greater than or equal to NRB0 and less than NRB1, the number of PTRS groups may be 2 and the number of samples per PTRS may be 2 for PUSCH. The value of NRB0, NRB1, NRB2, NRB3, and NRB4 may be configured by the network. In some implementations, NRB is the number of available RBs of the PUSCH. If the number of available RBs of the PUSCH is greater than or equal to NRB0 and less than NRB1, the number of PTRS groups may be 2 and the number of samples per PTRS may be 2 for PUSCH.
[0063] Table 1: Number of PTRS groups and number of samples per PTRS group
[0064] In some implementations, the number of samples of the PTRS, or the PTRS position in the first sequence, the number of modulation symbols in the first sequence may be determined according to any one or any combination of the following non-limiting exemplary embodiments.
[0065] In some implementations, the PTRS may be mapped to the OFDM symbol. In some implementations, there may be no muting resource in the OFDM symbol. The number of samples of the PTRS may be determined by the number of PTRS group and the number of samples per PTRS group. For example, the number of samples of PTRS may be the number of PTRS groups times the number of samples per PTRS group.
[0066] For one exemplary embodiment (first embodiment) , the position of the PTRS in the first sequence may be determined by the number of PTRS groups, the number of samples per PTRS group, and the number of REs of PUSCH. To illustrate as a non-limiting example, the index of the PTRS in the first sequence may be determined based on the equations in Table 2. In the equations, NPUSCH is the number of REs of the PUSCH. In some implementations, in case that the position of the PTRS exceeds the number of REs of the PUSCH excluding the muting RE (e.g., the index of the PTRS in the first sequence is equal to or greater than the number of available REs of the PUSCH) , the PTRS may be dropped. The dropped PTRS may not be counted in the number of samples of the PTRS. The number of samples of the PTRS may be determined by at least one of the number of PTRS groups, the number of samples per PTRS group, or the number of the dropped PTRS samples. For example, the number of samples of the PTRS may be the product of the number of PTRS group and the number of samples per PTRS group minus the number of the dropped PTRS samples. If no PTRS is dropped, the number of the dropped PTRS may be 0. The number of modulation symbols in the first sequence may be the number of available frequency resource (e.g., the number of the available REs) minus the number of samples of the PTRS.
[0067] Table 2: Index of PTRS samples in the sequence
[0068] FIG. 5 shows a non-limiting example of the PUSCH resource with muting resource. The PUSCH resource may include 8 RBs in the frequency domain. In the frequency domain, each RB may include 12 REs, which are denoted by RE 0-11, respectively. The PUSCH may have 96 (=12*8) REs in the frequency domain. The PUSCH may include 7 OFDM symbols in the time domain, which are denoted by OFDM symbol 0-6, respectively. In the time domain, the muting resource may include OFDM symbol 0 and OFDM symbol 4. In the frequency domain, the muting resource may include the odd REs (e.g., the RE with the odd index) . The available resource may include the even REs (e.g., the RE with the even index) . Therefore, in each of the OFDM symbol 0 and OFDM symbol 4, the muting resource may include 48 REs and the available resource may include 48 REs. In the other OFDM symbols except for the DMRS symbol, there is no muting resource and the available resource may include 96 REs.
[0069] In some implementations, the PUSCH may have 96 REs in the frequency domain. Therefore, NPUSCH=96. The PTRS may be in each of the OFDM symbols. In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be where s=1, 3 and k=0, 1. Therefore, the index of the PTRS is 23 (based on s=1, and k=0) , 24 (based on s=1, k=1) , 71 (based on s=3, and k=0) , and 72 (based on s=3, and k=1) . In OFDM symbol 0 or OFDM symbol 4, the available resource may include 48 REs. The PTRS index in the first sequence (e.g., 71, 72) may be greater than the number of available RE. The two PTRS may be dropped. The number of the PTRS in the OFDM symbol 0, or 4 may be 2 (obtained by 2*2-2) . Therefore, there are 2 PTRS in the OFDM symbol 0 or OFDM symbol 4 and the corresponding index in the first sequence is 23 and 24. In OFDM symbol 0 and OFDM symbol 4, the number of the modulation symbols may be 46 (obtained by 48-2) .
[0070] Similarly, in the OFDM symbol 1, 3, 5, or 6, the index of the PTRS in the first sequence may include 23, 24, 71, and 72. In these OFDM symbols, the available resource may include 96 REs. All the PTRS index may not exceed the number of the available resource. No PTRS is dropped. Therefore, there may be 4 (obtained by 2*2-0) PTRS in these OFDM symbols and the corresponding index may include 23, 24, 71 and 72. In each of these OFDM symbols, the number of modulation symbols may be 92 (obtained by 96-4) .
[0071] In some implementations, the PUSCH may include 460 modulation symbols, denoted by m0, m1, m2, …, m459, respectively. These modulation symbols may be divided into 6 sets, denoted by the set 0-5, respectively. Each set may correspond to one OFDM symbol. Set 0-5 may correspond to OFDM symbol 0, 1, 3, 4, 5, and 6, respectively. There are 20 PTRS, denoted by p0,p1, p2, …, p19, respectively. In the OFDM symbol 0, the number of modulation symbols is 46. The modulation symbols m0, m1, m2, …, m45 may be selected for set 0. There are two PTRS. The PTRS p0, p1 may be selected for set 0. The selected modulation symbols and the PTRS may be concatenated to form the first sequence of set 0. According to the position (e.g., the index) of the PTRS, the first sequence may be m0, m1, …, m22, p0, p1, m23, …, m45. The DFT operation may be performed for the first sequence. The DFT size may be 48. Similarly, in the OFDM symbol 1, the number of modulation symbols is 92. The modulation symbols m46, m47, m48, …, m137 may be selected for set 1. There are 4 PTRS. The PTRS p2, p3, p4, p5 may be selected for set 1. The selected modulation symbols and the PTRS may be concatenated to form the first sequence of set 1. According to the position (e.g., the index) of the PTRS, the first sequence may be m46, m47, …, m68, p2, p3, m69, …, m114, p4, p5, m115, …, m137. The DFT operation may be performed for the first sequence. The DFT size may be 96. Similarly, the first sequence of the set 2 may be m138, m139, …, m160, p6, p7, m161, …, m206, p8, p9, m207, …, m229. The first sequence of the set 3 may be m230, m231, …, m252, p10, p11, m253, …, m275. The first sequence of the set 4 may be m276, m277, …, m298, p12, p13, m299, …, m344, p14, p15, m345, …, m367. The first sequence of the set 5 may be m368, m369, …, m390, p16, p17, m391, …, m436, p18, p19, m437, …, m459. The DFT size for the set 2-5 are 96, 48, 96, and 96 respectively.
[0072] In some implementations, in case that the number of PTRS groups is 2 and the number of samples per PTRS group is 4, the index of the PTRS may be sNPUSCH+k where Therefore, the index of the PTRS may include 0 (based on s=0, and k=0) , 1 (based on s=0, and k=1) , 2 (based on s=0, and k=2) , and 3 (based on s=0, and k=3) , 92 (based on s=1, and k=-4) , 93 (based on s=1, and k=-3) , 94 (based on s=1, and k=-2) , and 95 (based on s=1, and k=-1) . Similarly, in each of OFDM symbol 0 and 4, there may be 4 (obtained by 2*4-4) PTRS and the corresponding index in the first sequence may be 0, 1, 2 and 3, respectively, and the modulation symbols may be 44 (obtained by 48-4) since the last 4 PTRS may be dropped. In each of OFDM symbol 1, 3, 5 and 6, there may be 8 (obtained by 2*4-0) PTRS and the corresponding index may include 0, 1, 2, 3, 92, 93, 94 and 95, respectively, and the modulation symbols may be 88 (obtained by 96-8) since no PTRS is dropped.
[0073] For another exemplary embodiment (second embodiment) , in some implementations, the position of the PTRS in the first sequence may be determined by the number of PTRS groups, the number of samples per PTRS group, the number of available REs of PUSCH. The position of the PTRS in the first sequence may be determined by the equation in Table 2 with replacing the number of REs of the PUSCH with the number of available RE of the PUSCH. That is to say, in the equations in Table 2, NPUSCH is the number of available REs of the PUSCH. In case that there may be no muting resource in the OFDM symbol, all the REs of the PUSCH may be available RE. That is to say, the number of available REs of the PUSCH may be equal to the number of the REs of the PUSCH. In case that there may be muting resource in the OFDM symbol, the available REs of the PUSCH may be the REs of the PUSCH excluding the muting RE. In some implementation, if there is at least one muting RE within the PUSCH resource, the available REs of the PUSCH may be the REs of the PUSCH excluding the muting RE. The number of samples of the PTRS may be determined by the number of PTRS groups and the number of samples per PTRS group. For example, the number of samples of PTRS may be the number of PTRS groups times the number of samples per PTRS group.
[0074] In some implementations, referring to FIG. 5, in the OFDM symbol 0 or 4, the number of available RE is 48. In OFDM symbol 1, 3, 5, or 6, the number of available RE is 96. In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be where s=1, 3 and k=0, 1. In OFDM symbol 0 or 4, NPUSCH=48. The index of the PTRS is 11 (based on s=1, and k=0) , 12 (based on s=1, k=1) , 35 (based on s=3, and k=0) , and 36 (based on s=3, and k=1) . There are 4 PTRS in OFDM symbol 0 or 4.Accordingly, the number of modulation symbols may be 44 (obtained by 48-4) . In OFDM symbol 1, 3, 5, or 6, NPUSCH=96. The index of the PTRS is 23 (based on s=1, and k=0) , 24 (based on s=1, k=1) , 71 (based on s=3, and k=0) , and 72 (based on s=3, and k=1) ) . There are 4 PTRS in OFDM symbol 1, 3, 5 or 6. Accordingly, the number of modulation symbols may be 92 (obtained by 96-4) .
[0075] In some implementations, the PUSCH may include 456 modulation symbols, denoted by m0, m1, m2, …, m455, respectively. These modulation symbols may be divided into 6 sets, denoted by the set 0-5, respectively. Each set may correspond to one OFDM symbol. Set 0-5 may correspond to OFDM symbol 0, 1, 3, 4, 5, and 6, respectively. There are 24 PTRS, denoted by p0,p1, p2, …, p23, respectively. In the OFDM symbol 0, the number of modulation symbols is 44. The modulation symbols m0, m1, m2, …, m43 may be selected for set 0. There are 4 PTRS. The PTRS p0, p1, p2, p3 may be selected for set 0. The selected modulation symbols and the PTRS may be concatenated to form the first sequence of set 0. According to the position (e.g., the index) of the PTRS, the first sequence may be m0, m1, …, m10, p0, p1, m11, …, m32, p2, p3, m33, …, m43. The DFT operation may be performed for the first sequence. The DFT size may be 48. Similarly, the first sequence may be m44, m45, …, m66, p4, p5, m67, …, m112, p6, p7, m113, …, m135. The DFT operation may be performed for the first sequence. The DFT size may be 96. Similarly, the first sequence of the set 2 may be m136, m137, …, m158, p8, p9, m159, …, m204, p10, p11, m205, …, m227. The first sequence of the set 3 may be
[0076] m228, m229, …, m238, p12, p13, m239, …, m260, p14, p15, m261, …, m271. The first sequence of the set 4 may be m272, m273, …, m294, p16, p17, m295, …, m340, p18, p19, m341, …, m363. The first sequence of the set 5 may be m364, m365, …, m386, p20, p21, m387, …, m432, p22, p23, m433, …, m455. The DFT size for the set 1-5 are 96, 96, 48, 96, and 96 respectively.
[0077] In some implementations, in case that the number of PTRS groups is 2 and the number of samples per PTRS group is 4, the index of the PTRS may be sNPUSCH+k where Similarly, In OFDM symbol 0 or 4, the index of the PTRS may include 0 (based on s=0, and k=0) , 1 (based on s=0, and k=1) , 2 (based on s=0, and k=2) , and 3 (based on s=0, and k=3) , 44 (based on s=1, and k=-4) , 45 (based on s=1, and k=-3) , 46 (based on s=1, and k=-2) , and 47 (based on s=1, and k=-1) . There are 8 PTRS in OFDM symbol 0 or 4. Accordingly, the number of modulation symbols may be 44 (obtained by 48-8) . In OFDM symbol 1, 3, 5, or 6, the index of the PTRS may include 0 (based on s=0, and k=0) , 1 (based on s=0, and k=1) , 2 (based on s=0, and k=2) , and 3 (based on s=0, and k=3) , 92 (based on s=1, and k=-4) , 93 (based on s=1, and k=-3) , 94 (based on s=1, and k=-2) , and 95 (based on s=1, and k=-1) . There are 8 PTRS in OFDM symbol 1, 3, 5 or 6. Accordingly, the modulation symbols may be 88 (96-8) .
[0078] For another exemplary embodiment (third embodiment) , the position of the PTRS in the first sequence may be determined by the number of PTRS groups, the number of samples per PTRS group, the number of REs of PUSCH, and the first factor. To illustrate as a non-limiting example, the index of the PTRS in the first sequence may be determined by the equations in Table 3. In the equations, NPUSCH is the number of REs of the PUSCH, F is the first factor. It is understood that the index of the PTRS in the first sequence may be determined by the transformation of the equations in Table 3. For example, one of the transformations of the equations may be s*Fs*NPUSCH+k, s*Fs*NPUSCH / 4+n+k and respectively. Fs may the ratio of the available resource of the PUSCH (e.g., the number of the available REs of the PUSCH) to the resource of the PUSCH (e.g., the number of the RE of the PUSCH) . The same results may be obtained by the equations in Table 3 and its corresponding transformations.
[0079] Table 3: Index of PTRS samples in the sequence
[0080] In some implementations, referring to FIG. 5, in the OFDM symbol 0 or 4, the number of available REs is 48. The first factor may be 2 (obtained by 96 / 48) . In OFDM symbol 1, 3, 5, or 6, the number of available RE is 96. The first factor may be 1 (obtained by 96 / 96) . The PUSCH may include 96 REs. Therefore, NPUSCH=96. In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be where s=1, 3 and k=0, 1. In OFDM symbol 0 or 4, the index of the PTRS may include 11 (based on s=1, and k=0) , 12 (based on s=1, k=1) , 35 (based on s=3, and k=0) , and 36 (based on s=3, and k=1) . There are 4 PTRS in OFDM symbol 0 or 4. Accordingly, the number of modulation symbols may be 44 (obtained by 48-4) . In OFDM symbol 1, 3, 5, or 6, The index of the PTRS is 23 (based on s=1, and k=0) , 24 (based on s=1, k=1) , 71 (based on s=3, and k=0) , and 72 (based on s=3, and k=1) . There are 4 PTRS in OFDM symbol 1, 3, 5 or 6. Accordingly, the number of modulation symbols may be 92 (obtained by 96-4) .
[0081] For another exemplary embodiment (fourth embodiment) , the position of the PTRS in the first sequence may be determined by at least one of the number of PTRS groups, the number of samples per PTRS group, the number of REs of PUSCH, or the number of available RE of the PUSCH. The position of the PTRS in the first sequence may be determined by performing modulo operation of a first value to the number of available REs of PUSCH, wherein the first value is the position of the PTRS that is determined by the number of the PTRS groups, the number of the samples per PTRS group and the frequency resource of the PUSCH. To illustrate as a non-limiting example, the index of the PTRS in the first sequence is determined based on the equations shown in Table 4. In the equations, NPUSCH is the number of REs of the PUSCH, NPUSCH, avai is the number of available REs of the PUSCH. If the more than one PTRS have the same position (e.g., index) in the first sequence, only the first or the last PTRS may be insert to the first sequence. The more than one PTRS except the first or the last PTRS may be dropped. The determination of the number of the samples of the PTRS may be the same as that in the first embodiment.
[0082] Table 4: Index of PTRS samples in the sequence
[0083] In some implementations, referring to FIG. 5, the PUSCH may include 96 REs. Therefore, NPUSCH=96. In the OFDM symbol 0 or 4, the number of available REs is 48. NPUSCH, avai=48. In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be where s=1, 3 and k=0, 1. In case s=1, and k=0, the index of the PTRS may be 23. In case s=1, and k=1, the index of the PTRS may be 24. In case s=3, and k=0, the index of the PTRS may be 23. It may be the same as the first one. Therefore, this PTRS may be dropped. In case s=3, and k=1, the index of the PTRS may be 24. It may be the same as the second one. Therefore, this PTRS may be dropped. In total, there are two PTRS and the corresponding index may be 23 and 24, respectively. Accordingly, there are 46 (obtained by 48-2) modulation symbols in OFDM symbol 0 or 4. In OFDM symbol 1, 3, 5, or 6, the number of available RE is 96. NPUSCH, avai=96. The index of the PTRS may include 23 (based on s=1, and k=0) , 24 (based on s=1, k=1) , 71 (based on s=3, and k=0) , and 72 (based on s=3, and k=1) . There may be 4 PTRS in OFDM symbol 1, 3, 5, or 6. Accordingly, there are 92 (obtained by 96-4) modulation symbols in OFDM symbol 0 or 4.
[0084] For another exemplary embodiment (fifth embodiment) , the number of PTRS groups may be scaled. The number of PTRS groups may be scaled based on at least the available resource of the PUSCH. In addition or alternatively, the number of the PTRS groups may be scaled by the first factor, e.g., where may be the number of PTRS groups after scaling, F may be the first factor, Ngroup may be the number of the PTRS groups before scaling (e.g., obtained in the above implementations) . With the above any embodiment, one or more PTRS groups may be obtained. The first or last of the one or more PTRS group may be selected. The position of the PTRS in the first sequence may include the selected PTRS group.
[0085] In some implementations, referring to FIG. 5, in the OFDM symbol 0 or 4, the number of available REs is 48. The first factor may be 2 (obtained by 96 / 48) . In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be 23, 24, 71, and 72 based on one of the above embodiments. The first PTRS group may include index 23 and 24. The second PTRS group may include the index 71 and 72. After scaling, the number of the PTRS group may be 1 (obtained by 2 / 2) . The first PTRS group may be selected. Therefore, the PTRS may include the index 23 and 24. In OFDM symbol 0 and OFDM symbol 4, the number of the modulation symbols may be 46 (obtained by 48-2) .
[0086] For another exemplary embodiment (sixth embodiment) , the number of samples per PTRS group may be scaled. The number of samples per PTRS group may be scaled based on at least the available resource of the PUSCH. In addition or alternatively, the number of the samples per PTRS group may be scaled by the first factor, e.g., where may be the number of samples per PTRS group after scaling, F may be the first factor, Nsamplemay be the number of the samples per PTRS group before scaling (e.g., obtained in the above implementations) . With the above any embodiment, one or more samples within each PTRS group may be obtained. The first or last of the one or more samples within each PTRS may be selected. The position of the PTRS in the first sequence may include the selected samples within all the PTRS groups.
[0087] In some implementations, referring to FIG. 5, in the OFDM symbol 0 or 4, the number of available REs is 48. The first factor may be 2 (obtained by 96 / 48) . In case that the number of PTRS groups is 2 and the number of samples per PTRS group is 2, the index of the PTRS may be 11, 12, 35, and 36 based on one of the above embodiments. The first PTRS group may include index 11 and 12. The second PTRS group may include the index 35 and 36. After scaling, the number of samples per PTRS group may be 1 (obtained by 2 / 2) . The first sample within PTRS group may be selected. In the first PTRS group, the first sample may have the index 11. In the second PTRS group, the first sample may have the index 35. Therefore, the PTRS may include the index 11 and 35. In OFDM symbol 0 and OFDM symbol 4, the number of the modulation symbols may be 46 (obtained by 48-2) .
[0088] In some implementations, the different methods may be applied to the different OFDM symbols. For example, the first embodiment may be applied to OFDM symbol without muting resource; and the second, third, or fourth embodiment may be applied to the OFDM symbol with muting resource.
[0089] In some implementations, by implementing the above embodiments, the position of the PTRS may not exceed the DFT size so that the DFT operation can be performed for the first sequence including PTRS and modulation symbols. The PUSCH can be processed accordingly and transmitted between the UE and the network.
[0090] In some embodiments, the network may configure one or more transmission and reception point (TRP) for the UE. Each TRP may perform transmission with the UE. The network may configure one or more control resource sets (CORESETs) . Each CORESET may be configured with a CORESET index. One TRP may be associated with a control resource set (CORESET) . For example, the first TRP may be associated with the first CORESET or the CORESET with the first CORESET index. A second TRP may be associated with a second CORESET or the CORESET with the second CORESET index, and so on. It is understood that one TRP may be associated with more than one CORESET, and vice versa.
[0091] In some embodiments, the network may configure one or more muting resources. In addition or alternatively, the network may configure or schedule one or more PUSCHs. The one or more PUSCH may include at least one of a first type of PUSCH, or a second type of PUSCH, and so on. One muting resource may be associated with at least one type of the PUSCH. One muting resource may be applied to at least one type of the PUSCH or the associated PUSCH. For example, the network may configure a first muting resource for or being associated with a first type of PUSCH. The network may configure a second muting resource for or being associated with a second type of PUSCH. The first muting resource may be applied to the PUSCH transmission with the first type. When the UE maps the modulation symbols of the PUSCH to the PUSCH resource with the first type, the first muting resource may be skipped and / or the second muting resource may not be skipped. For the first type of PUSCH transmission, the UE may map the modulation symbols of the PUSCH to the PUSCH resource excluding the first muting resource. Similarly, when the UE maps the modulation symbols of the PUSCH to the second type of the PUSCH resource, the second muting resource may be skipped and / or the first muting resource may not be skipped. For the second type of PUSCH transmission, the UE may map the modulation symbols of the PUSCH to the PUSCH resource excluding the second muting resource.
[0092] In some implementations, the first type of the PUSCH may include the PUSCH associated with the first TRP. The second type of the PUSCH may include the PUSCH associated with the second TRP. In some implementations, the network may configure one or more configured grant (CG) PUSCH for the UE. The first type of the PUSCH may include at least a first CG PUSCH. The second type of the PUSCH may include at least a second CG PUSCH. In some implementations, the first type of the PUSCH may include at least the CG PUSCH. The second type of the PUSCH may include the PUSCH scheduled by the DCI.
[0093] In some implementations, the scheduling information may schedule one or more PUSCH repetitions. Each PUSCH repetition may be associated with a TRP or may have a spatial information or quasi co-location (QCL) information. For example, the first one or more PUSCH repetitions or the even PUSCH repetitions (e.g., the first PUSCH repetition, the third PUSCH repetition, the fifth PUSCH repetition) may be associated with the first TRP or have a first spatial information or a first QCL information. The second one or more PUSCH repetitions or the odd PUSCH repetitions (e.g., the second PUSCH repetition, the fourth PUSCH repetition, the sixth PUSCH repetition) may be associated with the second TRP or have a second spatial information or a second QCL information, and so on. In some implementations, the first type of the PUSCH may include the first one or more PUSCH repetitions or the even PUSCH repetitions. The second type of the PUSCH may include the second one or more PUSCH repetitions or the odd PUSCH repetitions.
[0094] In some implementations, the UL muting may be applied to the PUSCH that is overlapping or within a frequency range. The frequency range may include one or more REs or RBs. The frequency range may be configured by the network or specified by the protocol. If the PUSCH overlaps with the frequency range partly or fully in the frequency domain, or the PUSCH is within the frequency in the frequency domain, the UL muting may be applied to the PUSCH. If the PUSCH does not overlap with the frequency range in the frequency domain, or the PUSCH is not within the frequency range, the UL muting may not be applied to the PUSCH. It means that all the PUSCH resources may be available. The UE may map the modulation symbols or the PTRS to all the PUSCH resource. In some implementations, the UL muting may be applied to the first one or more PUSCH repetition or the even PUSCH repetitions. The UL muting may not be applied to the second one or more PUSCH repetition or the odd PUSCH repetitions.
[0095] In some embodiments, the UE can determine how to apply the UL muting to the PUSCH, e.g., which PUSCH the UL muting may be applied to. This is to ensure that the performance of the PUSCH reception at the network side since the network and the UE have the same understanding.
[0096] The present disclosure describes methods, apparatus, and computer-readable medium for configuring a transmission sequence. The present disclosure addressed the issues with configuring a transmission sequence in a wireless communication system. The methods, devices, and computer-readable medium described in the present disclosure may facilitate the performance of wireless transmission, 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.
[0097] In various embodiments, a UE receives the scheduling information from the network, and the scheduling information schedules at least one of the PUSCH, the UE transmits the PUSCH to the network. In some implementations, the PUSCH resource may include the muting resource. In some implementations, the PTRS and the modulation symbols of the data is concatenated to form the first sequence. In some implementations, the DFT operation is performed for the first sequence.
[0098] In some implementations, the number of the samples of the PTRS or the position of PTRS in the first sequence may be determined based on at least one of the number of the PTRS groups, the number of the samples per PTRS group, the frequency resource of the PUSCH, the available frequency resource of the PUSCH, a first factor.
[0099] In some implementations, the first factor is the ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH, or the ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH in one OFDM symbol.
[0100] In some implementations, the position of PTRS in the first sequence may be determined based on at least one of the number of the PTRS groups, the number of the samples per PTRS group, or the available frequency resource of the PUSCH, wherein, in other implementations, the available frequency resource of the PUSCH may be the frequency resource of the PUSCH excluding the muting resource if there is muting resource in one OFDM symbol; and / or the available frequency resource of the PUSCH may be the all the frequency resource of the PUSCH if there is no muting resource in one OFDM symbol.
[0101] In some implementations, the position of the PTRS in the first sequence may be determined by the number of PTRS groups, the number of samples per PTRS group, the number of RE of PUSCH, and the first factor, wherein, in other implementations, the first factor may be 1 if there is no muting resource in one OFDM symbol.
[0102] In some implementations, the position of PTRS in the first sequence may be determined by performing modulo operation of a first value to the number of available RE of PUSCH, wherein, in other implementations, the first value is the position of the PTRS that is determined by the number of the PTRS groups, the number of the samples per PTRS group, the frequency resource of the PUSCH.
[0103] In some implementations, in case that the position of the PTRS determined by the number of the PTRS groups, the number of the samples per PTRS group, the frequency resource of the PUSCH exceeds the size of the DFT operation or the number of the available RE of the PUSCH, the PTRS is dropped, wherein, in other implementations, the dropped PTRS is not counted in the number of samples of the PTRS
[0104] In some implementations, the number of samples of the PTRS is the product of the number of the PTRS groups and the number of samples per PTRS group, or the product of the number of the PTRS groups and the number of samples per PTRS group minus the number of dropped PTRS.
[0105] In some other embodiments, a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out a portion or all of the above methods. The computer-readable medium may be referred as non-transitory computer-readable media (CRM) that stores data for extended periods such as a flash drive or compact disk (CD) , or for short periods in the presence of power such as a memory device or random access memory (RAM) . In some embodiments, computer-readable instructions may be included in a software, which is embodied in one or more tangible, non-transitory, computer-readable media. Such non-transitory computer-readable media can be media associated with user-accessible mass storage as well as certain short-duration storage that are of non-transitory nature, such as internal mass storage or ROM. The software implementing various embodiments of the present disclosure can be stored in such devices and executed by a processor (or processing circuitry) . A computer-readable medium can include one or more memory devices or chips, according to particular needs. The software can cause the processor (including CPU, GPU, FPGA, and the like) to execute particular processes or particular parts of particular processes described herein, including defining data structures stored in RAM and modifying such data structures according to the processes defined by the software. In various embodiments in the present disclosure, the term “processor” may mean one processor that performs the defined functions, steps, or operations or a plurality of processors that collectively perform defined functions, steps, or operations, such that the execution of the individual defined functions may be divided amongst such plurality of processors.
[0106] 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.
[0107] Furthermore, the described features, advantages and characteristics of the present solution may be combined in any suitable manner in one or more embodiments, for non-limiting examples, a portion from one or more embodiment may be combined with another portion of other 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
1.A method for wireless communication, comprising:receiving, by a user equipment (UE) from a base station, information for scheduling a physical uplink shared channel (PUSCH) ;determinizing, by the UE based on the information for scheduling the PUSCH, a sequence for transmitting in the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; andtransmitting, by the UE, the sequence in the PUSCH to the base station.2.A method for wireless communication, comprising:sending, by a base station to a user equipment (UE) , information for scheduling a physical uplink shared channel (PUSCH) , so that the UE is configured to determine a sequence for transmitting in the PUSCH based on the information for scheduling the PUSCH, wherein the sequence comprises at least one modulation symbol and at least one phase tracking reference signaling (PTRS) ; andreceiving, by the base station, the sequence in the PUSCH from the UE.3.The method according to any of claims 1 to 2, wherein:the PUSCH comprises a muting resource comprising at least one symbol in a time domain and at least one resource element (RE) in the frequency domain;the at least one modulation symbol comprises a number of modulation symbols;the at least one PTRS comprises a number of PTRS samples; orthe modulation symbols and the PTRS samples are concatenated to form the sequence based on a position of each PTRS sample in the PTRS samples.4.The method according to any of claims 1 to 3, wherein:before transmitting the sequence, the UE performs a discrete Fourier transform (DFT) operation on the sequence to obtain a DFT-ed sequence; andthe UE transmits the DFT-ed sequence to the base station.5.The method according to any one of claims 1 to 4, wherein:the number of the PTRS samples in the sequence or a position of each PTRS sample in the sequence are determined based on at least one of the following:a number of PTRS groups,a number of PTRS samples per PTRS group,a frequency resource of the PUSCH,an available frequency resource of the PUSCH, ora factor.6.The method according to claim 5, wherein:when an orthogonal frequency-division multiplexing (OFDM) symbol in the PUSCH includes muting resource, the available frequency resource of the PUSCH is determined as the frequency resource of the PUSCH excluding the muting resource.7.The method according to claim 5, wherein:when an OFDM symbol in the PUSCH does not include muting resource, the available frequency resource of the PUSCH is determined as all the frequency resource of the PUSCH.8.The method according to claim 5, wherein:the factor is determined as a ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH over all available OFDM symbols in the PUSCH.9.The method according to claim 5, wherein:the factor is determined as a ratio of the frequency resource of the PUSCH to the available frequency resource of the PUSCH in each available OFDM symbol in the PUSCH.10.The method according to claim 9, wherein:when an OFDM symbol in the PUSCH includes muting resource, the factor is larger than one; andwhen an OFDM symbol in the PUSCH does not include muting resource, the factor is equal to one.11.The method according to any of claims 5-10, wherein:the position of each PTRS sample in the sequence is determined based on at least one of the following:the number of PTRS groups,the number of PTRS samples per PTRS group, orthe frequency resource of the PUSCH.12.The method according to any of claims 5-10, wherein:the position of each PTRS sample in the sequence is determined based on at least one of the following:the number of PTRS groups,the number of PTRS samples per PTRS group, orthe available frequency resource of the PUSCH.13.The method according to any of claims 5-10, wherein:the position of each PTRS sample in the sequence is determined based on at least one of the following:the number of PTRS groups,the number of PTRS samples per PTRS group,the frequency resource of the PUSCH, orthe factor.14.The method according to any of claims 11-13, wherein:the frequency resource of the PUSCH comprises a number of resource elements (REs) of the PUSCH.15.The method according to any of claims 5-10, wherein:the position of each PTRS sample in the sequence is determined based on at least one of the following:the number of PTRS groups,the number of PTRS samples per PTRS group,the frequency resource of the PUSCH, orthe available frequency resource of the PUSCH.16.The method according to claim 14, wherein:the position of each PTRS sample in the sequence is determined according to V mol N, wherein:V is a set of values that are determined based on the number of PTRS groups, the number of PTRS samples per PTRS group, and the frequency resource of the PUSCH,N is a number of REs in the available frequency resource of the PUSCH, andmol is a modulo operator for obtaining a remainder of a division.17.The method according to any one of claims 5-16, wherein:in case any determined position of a corresponding PTRS sample exceeding a size of the DFT operation or a number of REs in the available frequency resource of the PUSCH, the corresponding PTRS sample is dropped from being included in the sequence.18.The method according to claim 10, wherein:the number of the PTRS samples in the sequence is determined according to one of the following:a product of the number of the PTRS groups and the number of PTRS samples per PTRS group; ora subtraction result of the product of the number of the PTRS groups and the number of PTRS samples per PTRS group minus a number of all dropped PTRS samples.19.A wireless communications apparatus comprising at least one processor and a memory, wherein the at least one processor is configured to read code from the memory and implement a method recited in any one of claims 1 to 18.20.A computer-readable medium comprising instructions which, when executed by a computer, causing the computer to carry out the method recited in any one of claims 1 to 18.