Prioritization based on uplink transmission parameters
By receiving and processing uplink transmission parameters, determining the priority order of the logical channel, the problem of not being able to effectively handle multiple logical channels in the prior art is solved, and the efficiency and effectiveness of resource allocation are achieved.
Patent Information
- Application Number
- CN202211003495.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2017-04-25
- Filing Date
- 2018-04-25
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2038-04-25
AI Technical Summary
When processing multiple logical channels, existing wireless communication networks cannot effectively consider the differences in different parameter sets and transmission time interval lengths, resulting in the inability to meet the transmission requirements of each service.
The uplink transmission parameters are received through the receiver, including parameter sets and transmission time interval lengths, and the processor determines the priority order of multiple logical channels based on these parameters and logical channels, and assigns resources according to the priority order.
It realizes determining the priority order of the logical channel based on the uplink transmission parameters, ensuring the efficiency and effectiveness of resource allocation, and meeting the transmission requirements of different services.
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Figure CN115348681B_ABST
Abstract
Description
[0001] This application is a divisional application of the Chinese invention patent application "Device and method for determining priority order based on uplink transmission parameters" with PCT application number PCT / US2018 / 029297, international application date April 25, 2018, and Chinese application number 201880027473.7, which entered the Chinese national phase on October 25, 2019. Technical Field
[0002] The subject matter disclosed herein relates generally to wireless communications, and more particularly to determining a priority order based on uplink transmission parameters. Background Art
[0003] The following abbreviations are defined herein, at least some of which are referenced in the following description: 3rd Generation Partnership Project (“3GPP”), acknowledgement (“ACK”), binary phase shift keying (“BPSK”), clear channel assessment (“CCA”), cyclic prefix (“CP”), channel state information (“CSI”), common search space (“CSS”), discrete Fourier transform spread (“DFTS”), downlink control information (“DCI”), downlink (“DL”), downlink pilot time slot (“DwPTS”), enhanced clear channel assessment (“eCCA”), enhanced mobile broadband (“eMBB”), evolved Node B (“eNB”), European Telecommunications Standards Institute (“ETSI”), ”), Frame-based Equipment (“FBE”), Frequency Division Duplex (“FDD”), Frequency Division Multiple Access (“FDMA”), Guard Period (“GP”), Hybrid Automatic Repeat Request (“HARQ”), Internet of Things (“IoT”), License Assisted Access (“LAA”), Load-based Equipment (“LBE”), Listen Before Talk (“LBT”), Long Term Evolution (“LTE”), Medium Access Control (“MAC”), Multiple Access (“MA”), Modulation and Coding Scheme (“MCS”), Machine Type Communication (“MTC”), Massive MTC (“mMTC”), Multiple Input Multiple Output (“MIMO”), Multi-User Shared Access (“MUSA”), Narrowband (“NB”), Negative Acknowledgement (“NACK”), ”) or (“NAK”), Next Generation Node B (“gNB”), Non-Orthogonal Multiple Access (“NOMA”), Orthogonal Frequency Division Multiplexing (“OFDM”), Primary Cell (“PCell”), Physical Broadcast Channel (“PBCH”), Physical Downlink Control Channel (“PDCCH”), Physical Downlink Shared Channel (“PDSCH”), Pattern Division Multiple Access (“PDMA”), Physical Hybrid ARQ Indicator Channel (“PHICH”), Physical Random Access Channel (“PRACH”), Physical Resource Block (“PRB”), Physical Uplink Control Channel (“PUCCH”), Physical Uplink Shared Channel (“PUSCH”), Quality of Service (“QoS”), Orthogonal Phase Shift Keying (“ QPSK”), Radio Resource Control (“RRC”), Random Access Procedure (“RACH”), Random Access Response (“RAR”), Reference Signal (“RS”), Resource Spread Multiple Access (“RSMA”), Round Trip Time (“RTT”), Reception (“RX”), Sparse Code Multiple Access (“SCMA”), Scheduling Request (“SR”), Single Carrier Frequency Division Multiple Access (“SC-FDMA”), Secondary Cell (“SCell”), Shared Channel (“SCH”), Signal to Interference-plus-Noise Ratio (“SINR”), System Information Block (“SIB”), Transport Block (“TB”), Transport Block Size (“TBS”), Time Division Duplex (“TDD”), Time Division Multiplexing (“TDM”),Transmission Time Interval ("TTI"), Transmission ("TX"), Uplink Control Information ("UCI"), User Entity / Equipment (Mobile Terminal) ("UE"), Uplink ("UL"), Universal Mobile Telecommunications System ("UMTS"), Uplink Pilot Time Slot ("UpPTS"), Ultra Reliability and Low Latency Communications ("URLLC"), and Worldwide Interoperability for Microwave Access ("WiMAX"). As used herein, "HARQ-ACK" may uniformly represent a positive acknowledgement ("ACK") and a negative acknowledgement ("NAK"). ACK means that the TB is received correctly, and NAK means that the TB is received in error.
[0004] In certain wireless communication networks, high carrier frequencies (e.g., >6 GHz), such as millimeter waves, may be used. In various configurations, different OFDM parameter sets (e.g., subcarrier spacing (“SCS”), CP length) may be used in a single architecture to support various requirements for different services (e.g., eMBB, URLLC, mMTC). Certain configurations have different requirements in terms of data rates, latency, and coverage. For example, eMBB may support peak data rates (e.g., 20 Gbps for downlink and 10 Gbps for uplink) and user experienced data rates at three times the level found in other configurations. On the other hand, URLLC may have requirements for ultra-low latency (e.g., 0.5 ms each for UL and DL for user plane latency) and high reliability (e.g., 1×10 -5 ) have certain requirements. In addition, mMTC may have high connection density, large coverage in harsh environments, and extremely long life batteries for low-cost devices. Therefore, an OFDM parameter set (e.g., subcarrier spacing, OFDM symbol duration, CP duration, number of symbols per scheduling interval, etc.) that is suitable for one configuration may not be suitable for another. For example, a low-latency service may use a shorter symbol duration (and therefore a larger subcarrier spacing) and / or fewer symbols per scheduling interval (e.g., TTI) than an mMTC configuration. In addition, a deployment configuration with a large channel delay spread may use a longer CP duration than a configuration with a short delay spread. The subcarrier spacing can be optimized in various configurations to maintain similar CP overhead.
[0005] In some configurations, the UE may be configured with multiple parameter sets at the same time. The logical channel prioritization ("LCP") process may not be convenient for using multiple parameter sets at the same time. In various configurations, the LCP process may be performed as defined in TS36.321 Section 5.4.3.1, the contents of which are incorporated herein by reference in their entirety. In some configurations, each logical channel is assigned a priority (e.g., a logical channel priority). In addition, a priority bit rate ("PBR") may be defined for each logical channel. In some configurations, PBR provides support for each logical channel, including a low priority non-guaranteed bit rate ("GBR") bearer, to have a minimum bit rate to avoid potential starvation. Each bearer may obtain sufficient resources to implement PRBs. In various configurations, the LCP process may be a two-step process. In the first step, logical channels may be served (in descending priority order starting with the highest priority logical channel) until their configured PBR (implemented with the aid of a token bucket model). In the second step of the LCP procedure, if any uplink resources are reserved (after the PBR of the LCH is met in the first step), all logical channels are served in strictly decreasing priority order (regardless of the bucket value) until the data or UL grant for that logical channel is exhausted.
[0006] Since the LCP procedure does not consider the different allowed parameter sets and / or TTI lengths (only the logical channel priority / PBR of the logical channels), the configuration may not meet the corresponding transmission requirements. Summary of the invention
[0007] An apparatus for determining a priority order based on uplink transmission parameters is disclosed. Methods and systems also perform the functions of the apparatus. In one embodiment, the apparatus includes a receiver that receives an uplink grant corresponding to an uplink transmission parameter including a parameter set (numerology) and an indication of a transmission time interval length. In various embodiments, the apparatus includes a processor that determines a priority order of multiple logical channels based on the uplink transmission parameters and the logical channel priorities of the multiple logical channels. In some embodiments, the processor assigns resources to a logical channel in the multiple logical channels based on the priority order.
[0008] In one embodiment, the parameter set includes a subcarrier spacing, an orthogonal frequency division multiplexing symbol duration, a cyclic prefix duration, or some combination thereof. In yet another embodiment, the processor determines a priority order of multiple logical channels based on uplink transmission parameters and logical channel priorities of the multiple logical channels in the following manner: in response to the parameter set parameters of each logical channel in the set of logical channels including the parameter set and the maximum transmission time interval length of each logical channel in the set of logical channels being less than or equal to the transmission time interval length, selecting a set of logical channels in the multiple logical channels; and sorting the logical channels in the set of logical channels according to the logical channel priority of each logical channel in the set of logical channels. In certain embodiments, sorting the logical channels in the set of logical channels includes sorting the logical channels in the set of logical channels in descending priority order. In various embodiments, the parameter set parameters include one or more parameter sets. In some embodiments, the logical channels in the set of logical channels take precedence over the media access control control element.
[0009] In some embodiments, the indication of the parameter set comprises an index corresponding to the parameter set.In one embodiment, each logical channel of the plurality of logical channels is configured with a set of parameter sets and a maximum transmission time interval length allowed by the respective logical channel.
[0010] In some embodiments, each of the plurality of logical channels is configured with a maximum parameter set and a maximum transmission time interval length allowed by the respective logical channel. In various embodiments, the processor determines a priority order of the plurality of logical channels based on the uplink transmission parameters and the logical channel priorities of the plurality of logical channels by: selecting a set of logical channels in the plurality of logical channels in response to the maximum parameter set of each logical channel in the set of logical channels being less than or equal to the parameter set and the maximum transmission time interval length of each logical channel in the set of logical channels being less than or equal to the transmission time interval length; and ordering the logical channels in the set of logical channels according to the logical channel priority of each logical channel in the set of logical channels. In some embodiments, the processor selects a scheduling request resource for transmission, and the scheduling request resource corresponds to the parameter set requested for uplink transmission.
[0011] In one embodiment, the processor selects a scheduling request resource based on a first parameter set of a set of parameter sets configured for a logical channel in a plurality of logical channels for which a buffer status report is triggered due to data becoming available for transmission. In certain embodiments, the receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on a number of logical channels in a plurality of logical channels configured with parameter sets corresponding to respective uplink grants in the plurality of uplink grants. In various embodiments, the receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on a predefined parameter set priority order. In one embodiment, the receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on a predefined order, a signaled order, or some combination thereof.
[0012] In one embodiment, a method for determining a priority order based on an uplink transmission parameter includes receiving an uplink grant corresponding to an uplink transmission parameter, the uplink transmission parameter including a parameter set and an indication of a transmission time interval length. In various embodiments, the method includes determining a priority order of a plurality of logical channels based on the uplink transmission parameter and logical channel priorities of the plurality of logical channels. In some embodiments, the method includes assigning resources to a logical channel of the plurality of logical channels based on the priority order. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] A more particular description of the embodiments briefly described above will be presented by reference to specific embodiments illustrated in the accompanying drawings. Understanding that these drawings depict only some embodiments and are therefore not to be considered limiting of scope, the embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:
[0014] Figure 1 is a schematic block diagram illustrating one embodiment of a wireless communication system for determining a priority order based on uplink transmission parameters;
[0015] Figure 2 is a schematic block diagram illustrating one embodiment of an apparatus that may be used to determine a priority order based on uplink transmission parameters;
[0016] Figure 3 is a schematic block diagram illustrating one embodiment of an apparatus that may be used to send uplink transmission parameters;
[0017] Figure 4 is a schematic flow chart illustrating one embodiment of a method for determining a priority order based on uplink transmission parameters;
[0018] Figure 5is a schematic flow chart illustrating another embodiment of a method for determining a priority order based on uplink transmission parameters;
[0019] Figure 6 is a schematic flow chart illustrating yet another embodiment of a method for determining a priority order based on uplink transmission parameters;
[0020] Figure 7 is a schematic flow chart illustrating yet another embodiment of a method for determining a priority order based on uplink transmission parameters;
[0021] Figure 8 is a schematic flow chart illustrating yet another embodiment of a method for determining a priority order based on uplink transmission parameters; and
[0022] Fig. 9 is a schematic flow chart illustrating one embodiment of a method for determining a priority order based on uplink transmission parameters. DETAILED DESCRIPTION
[0023] As will be appreciated by those skilled in the art, aspects of the embodiments may be embodied as systems, devices, methods or program products. Therefore, the embodiments may take the form of a complete hardware embodiment, a complete software embodiment (including firmware, resident software, microcode, etc.) or a combination of software and hardware aspects, which may generally be referred to herein as "circuit", "module" or "system". In addition, the embodiments may take the form of a program product embodied in one or more computer-readable storage devices stored in machine-readable code, computer-readable code and / or program code, hereinafter referred to as code. The storage device may be tangible, non-temporary and / or non-transmitting. The storage device may not embody a signal. In a certain embodiment, the storage device only employs a signal for accessing the code.
[0024] Certain functional units described in this specification may be labeled as modules in order to more specifically emphasize their implementation independence. For example, a module may be implemented as a hardware circuit including a custom very large scale integration ("VLSI") circuit or gate array, an off-the-shelf semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in a programmable hardware device such as a field programmable gate array, a programmable array logic, a programmable logic device, or the like.
[0025] Modules can also be implemented in code and / or software to be executed by various types of processors. The identified code modules can, for example, include one or more physical or logical blocks of executable code, which can, for example, be organized as objects, processes, or functions. However, the executable files of the identified modules do not need to be physically located together, but can include different instructions stored in different locations, which, when logically connected together, include the modules and achieve the described purpose of the modules.
[0026] In fact, a code module can be a single instruction or many instructions, and can even be distributed in several different code segments, among different programs and across several memory devices. Similarly, in this article, operating data can be identified and illustrated in a module, and can be embodied in any suitable form and organized in a data structure of any suitable type. Operating data can be collected as a single data set, or can be distributed in different locations, including being distributed on different computer-readable storage devices. When a module or part of a module is implemented in software, the software portion is stored on one or more computer-readable storage devices.
[0027] Any combination of one or more computer readable media may be utilized. The computer readable medium may be a computer readable storage medium. The computer readable storage medium may be a storage device storing code. The storage device may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical or semiconductor system, apparatus or device, or any suitable combination of the foregoing.
[0028] More specific examples of storage devices (a non-exhaustive list) would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory ("RAM"), a read-only memory ("ROM"), an erasable programmable read-only memory ("EPROM" or flash memory), a portable compact disk read-only memory ("CD-ROM"), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer-readable storage medium may be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device.
[0029] The code for performing the operations of the embodiments may be any number of lines and may be written in any combination of one or more programming languages including object-oriented programming languages such as Python, Ruby, Java, Smalltalk, C++, and the like, and traditional procedural programming languages such as the "C" programming language, and / or machine languages such as assembly languages. The code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer may be connected to the user's computer via any type of network, including a local area network ("LAN") or a wide area network ("WAN"), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).
[0030] References to "one embodiment", "embodiment" or similar language throughout this specification are intended to mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in at least one embodiment. Therefore, unless otherwise expressly stated, the phrases "in one embodiment", "in an embodiment" and similar language appearing throughout the specification may, but not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments". Unless otherwise expressly stated, the terms "include", "comprising", "having" and their variations mean "including but not limited to". Unless otherwise expressly stated, the enumerated list of items does not imply that any or all items are mutually exclusive. Unless otherwise expressly stated, the terms "a", "an" and "the" also refer to "one or more".
[0031] In addition, the features, structures or characteristics of the described embodiments may be combined in any suitable manner. In the following description, many specific details are provided, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide a thorough understanding of the embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific details, or using other methods, components, materials, etc. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid obscuring some aspects of the embodiments.
[0032] The various aspects of the embodiments are described below with reference to the schematic flow charts and / or schematic block diagrams of the methods, devices, systems and program products according to the embodiments. It will be understood that each block of the schematic flow charts and / or schematic block diagrams and the combination of blocks in the schematic flow charts and / or schematic block diagrams can be implemented by code. The code can be provided to a processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine, so that instructions executed by the processor of the computer or other programmable data processing device create a device for implementing the functions / operations specified in one or more blocks of the schematic flow charts and / or schematic block diagrams.
[0033] The code may also be stored in a storage device that is capable of instructing a computer, other programmable data processing apparatus, or other device to operate in a specific manner so that the instructions stored in the storage device produce an article of manufacture including instructions that implement the functions / operations specified in one or more blocks of the schematic flowchart and / or schematic block diagram.
[0034] The code may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operational steps are performed on the computer, other programmable apparatus, or other device to produce a computer-implemented process, so that the code executed on the computer or other programmable apparatus provides a process for implementing the functions / operations specified in one or more blocks of the flowchart and / or block diagram.
[0035] The schematic flow charts and / or schematic block diagrams in the accompanying drawings illustrate the possible implementation architectures, functions and operations of the devices, systems, methods and program products according to various embodiments. In this regard, each block in the schematic flow charts and / or schematic block diagrams may represent a module, a fragment or a portion of a code, which includes one or more executable instructions of the code for implementing the specified logical function.
[0036] It should also be noted that in some alternative implementations, the functions annotated in the blocks may not occur in the order annotated in the drawings. For example, two blocks shown in succession may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order, depending on the functions involved. Other steps and methods are contemplated that are equivalent in function, logic, or effect to one or more blocks or portions thereof of the illustrated drawings.
[0037] Although various arrow types and line types can be adopted in flow charts and / or block diagrams, it should be understood that they do not limit the scope of the corresponding embodiments. In fact, some arrows or other connectors can only be used to indicate the logical flow of the depicted embodiment. For example, an arrow can indicate the waiting or monitoring period of the unspecified duration between the enumeration steps of the depicted embodiment. It will also be noted that each block of the block diagram and / or flow chart and the combination of the blocks in the block diagram and / or flow chart can be realized by a system based on dedicated hardware that performs a specific function or operation, or a combination of dedicated hardware and code.
[0038] The description of an element in each figure may refer to an element of the previous figure. The same numerals refer to the same elements in all figures, including alternative embodiments of the same elements.
[0039] Figure 1 An embodiment of a wireless communication system 100 for determining a priority order based on uplink transmission parameters is depicted. In one embodiment, the wireless communication system 100 includes a remote unit 102 and a base unit 104. Although Figure 1 Although a particular number of remote units 102 and base units 104 are depicted in FIG. 1 , those skilled in the art will recognize that any number of remote units 102 and base units 104 may be included in the wireless communication system 100 .
[0040] In one embodiment, the remote unit 102 may include a computing device such as a desktop computer, a laptop computer, a personal digital assistant ("PDA"), a tablet computer, a smart phone, a smart TV (e.g., a TV connected to the Internet), a set-top box, a game console, a security system (including a security camera), a vehicle-mounted computer, a network device (e.g., a router, a switch, a modem), etc. In some embodiments, the remote unit 102 includes a wearable device such as a smart watch, a fitness band, an optical head-mounted display, etc. In addition, the remote unit 102 may be referred to as a user unit, a mobile device, a mobile station, a user, a terminal, a mobile terminal, a fixed terminal, a user station, a UE, a user terminal, a device, or other terms used in the art. The remote unit 102 may communicate directly with one or more base units 104 via UL communication signals.
[0041] The base units 104 may be distributed over a geographic area. In some embodiments, the base units 104 may also be referred to as access points, access terminals, bases, base stations, node-Bs, eNBs, gNBs, home node-Bs, relay nodes, devices, or any other terminology used in the art. The base units 104 are typically part of a radio access network that includes one or more controllers that are communicatively coupled to one or more corresponding base units 104. The radio access network is typically communicatively coupled to one or more core networks, which may be coupled to other networks, such as the Internet and a public switched telephone network, and the like. These and other elements of the radio access network and the core network are not illustrated, but those of ordinary skill in the art are generally familiar with the above elements.
[0042] In one embodiment, the wireless communication system 100 complies with the LTE of the 3GPP protocol, wherein the base unit 104 transmits on the DL using an OFDM modulation scheme, and the remote unit 102 transmits on the UL using an SC-FDMA scheme or an OFDM scheme. However, more generally, the wireless communication system 100 may implement some other open or proprietary communication protocols, such as WiMAX, etc. The present disclosure is not intended to be limited to the implementation of any particular wireless communication system architecture or protocol.
[0043] The base unit 104 may serve multiple remote units 102 within a service area, such as a cell or a cell sector, via wireless communication links. The base unit 104 transmits DL communication signals in the time, frequency, and / or spatial domains to serve the remote units 102. In one embodiment, the base unit 104 may transmit an uplink grant corresponding to uplink transmission parameters to the remote units 102.
[0044] In another embodiment, the remote unit 102 may receive an uplink grant corresponding to an uplink transmission parameter, the uplink transmission parameter including an indication of a parameter set and a transmission time interval length. The remote unit 102 may determine a priority order of a plurality of logical channels based on the uplink transmission parameter and the logical channel priorities of the plurality of logical channels. In certain embodiments, the remote unit 102 may assign resources to a logical channel in the plurality of logical channels based on the priority order. Therefore, the remote unit 102 may be used to determine the priority order based on the uplink transmission parameter.
[0045] Figure 2An embodiment of an apparatus 200 that can be used to determine a priority order based on uplink transmission parameters is depicted. Apparatus 200 includes an embodiment of remote unit 102. In addition, remote unit 102 may include processor 202, memory 204, input device 206, display 208, transmitter 210, and receiver 212. In some embodiments, input device 206 and display 208 are combined into a single device, such as a touch screen. In some embodiments, remote unit 102 may not include any input device 206 and / or display 208. In various embodiments, remote unit 102 may include one or more of processor 202, memory 204, transmitter 210, and receiver 212, and may not include input device 206 and / or display 208.
[0046] In one embodiment, the processor 202 may include any known controller capable of executing computer-readable instructions and / or capable of performing logical operations. For example, the processor 202 may be a microcontroller, a microprocessor, a central processing unit ("CPU"), a graphics processing unit ("GPU"), an auxiliary processing unit, a field programmable gate array ("FPGA"), or a similar programmable controller. In some embodiments, the processor 202 executes instructions stored in the memory 204 to perform the methods and routines described herein. In various embodiments, the processor 202 determines a priority order of multiple logical channels based on uplink transmission parameters and logical channel priorities of the multiple logical channels. In certain embodiments, the processor 202 assigns resources to logical channels in the multiple logical channels based on the priority order. The processor 202 is communicatively coupled to the memory 204, the input device 206, the display 208, the transmitter 210, and the receiver 212.
[0047] In one embodiment, memory 204 is a computer-readable storage medium. In some embodiments, memory 204 includes volatile computer storage media. For example, memory 204 may include RAM, including dynamic RAM ("DRAM"), synchronous dynamic RAM ("SDRAM"), and / or static RAM ("SRAM"). In some embodiments, memory 204 includes non-volatile computer storage media. For example, memory 204 may include a hard drive, flash memory, or any other suitable non-volatile computer storage device. In some embodiments, memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, memory 204 stores data related to priority order. In some embodiments, memory 204 also stores program code and related data, such as an operating system or other controller algorithm operating on remote unit 102.
[0048] In one embodiment, input device 206 may include any known computer input device, including a touchpad, buttons, keyboard, stylus, microphone, etc. In some embodiments, input device 206 may be integrated with display 208, for example, as a touch screen or similar touch-sensitive display. In some embodiments, input device 206 includes a touch screen so that text can be entered using a virtual keyboard displayed on the touch screen and / or by handwriting on the touch screen. In some embodiments, input device 206 includes two or more different devices such as a keyboard and a touchpad.
[0049] In one embodiment, display 208 may include any known electronically controllable display or display device. Display 208 may be designed to output visual, auditory and / or tactile signals. In some embodiments, display 208 includes an electronic display capable of outputting visual data to a user. For example, display 208 may include, but is not limited to, an LCD display, an LED display, an OLED display, a projector, or a similar display device capable of outputting images, text, etc. to a user. As another non-limiting example, display 208 may include a wearable display such as a smart watch, smart glasses, a head-up display, etc. In addition, display 208 may be a component of a smart phone, a personal digital assistant, a television, a desktop computer, a notebook (laptop) computer, a personal computer, a vehicle dashboard, etc.
[0050] In some embodiments, the display 208 includes one or more speakers for generating sounds. For example, the display 208 can generate an audible alarm or notification (e.g., a beep or chime). In some embodiments, the display 208 includes one or more tactile devices for generating vibration, motion, or other tactile feedback. In some embodiments, all or part of the display 208 can be integrated with the input device 206. For example, the input device 206 and the display 208 can form a touch screen or similar touch-sensitive display. In other embodiments, the display 208 can be located near the input device 206.
[0051] The transmitter 210 is used to provide UL communication signals to the base unit 104, and the receiver 212 is used to receive DL communication signals from the base unit 104. In some embodiments, the receiver 212 receives an uplink grant corresponding to uplink transmission parameters including a parameter set and an indication of the length of a transmission time interval. Although only one transmitter 210 and one receiver 212 are shown, the remote unit 102 can have any suitable number of transmitters 210 and receivers 212. The transmitter 210 and the receiver 212 can be any suitable type of transmitter and receiver. In one embodiment, the transmitter 210 and the receiver 212 can be part of a transceiver.
[0052] Figure 3 One embodiment of an apparatus 300 that may be used to send uplink transmission parameters is depicted. The apparatus 300 includes one embodiment of the base unit 104. In addition, the base unit 104 may include a processor 302, a memory 304, an input device 306, a display 308, a transmitter 310, and a receiver 312. It is understood that the processor 302, the memory 304, the input device 306, the display 308, the transmitter 310, and the receiver 312 may be substantially similar to the processor 202, the memory 204, the input device 206, the display 208, the transmitter 210, and the receiver 212 of the remote unit 102, respectively.
[0053] In various embodiments, the transmitter 310 is used to send an uplink grant corresponding to uplink transmission parameters including an indication of a parameter set and a transmission time interval length. Although only one transmitter 310 and one receiver 312 are shown, the base unit 104 may have any suitable number of transmitters 310 and receivers 312. The transmitter 310 and receiver 312 may be any suitable type of transmitter and receiver. In one embodiment, the transmitter 310 and receiver 312 may be part of a transceiver.
[0054] Figure 4 is a schematic flow chart illustrating one embodiment of a method 400 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 400 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 400 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0055] In some embodiments, in addition to the logical channel priority, each parameter set (e.g., subcarrier spacing, OFDM symbol duration, CP duration, number of symbols per scheduling interval, etc.) and / or TTI configured as an allowed parameter set and / or TTI for a logical channel may be associated with a priority. During the LCP process, the UE and / or MAC may consider both the parameter set priority and the logical channel priority to determine the order in which the logical channels are served. In some embodiments, the logical channel is configured to be transmitted using multiple parameter sets and / or TTIs, and the configured allowed parameter sets have a specific priority order that the UE can follow during the LCP process. Specifically, the logical channel may include a preferred / main parameter set / TTI (e.g., uplink transmission parameters) and an auxiliary parameter set / TTI (e.g., uplink transmission parameters). In various embodiments, there is a preferred / main parameter set / TTI associated with each logical channel. The preferred / main parameter set / TTI may be a parameter set that is most suitable for the transmission of data for a specific logical channel according to the service / QoS requirements. In some embodiments, there may be one or more auxiliary parameter sets / TTIs associated with each logical channel.
[0056] In some embodiments, the preferred / primary parameter set / TTI may have the highest priority among the allowed parameter sets. In various embodiments, the priority of the secondary parameter sets may be in the order of configuration (e.g., the secondary parameter set of the first configuration has the second highest priority, the secondary parameter set of the second configuration has the third highest priority, etc.). In certain embodiments, the UE may comply with the priority of the parameter sets associated with the logical channels during the LCP process (e.g., a logical channel having a parameter set configured as an indication of the preferred / primary parameter set in the UL grant may take precedence over a logical channel having a parameter set configured only as an indication of the secondary parameter set / TTI). Therefore, the data of the logical channel may be sent with the most suitable parameter set scheme in order to comply with the requirements of the parameter set configuration.
[0057] Turning to the method 400, the method 400 includes receiving 402 an UL grant for parameter set / TTI X. The method 400 also includes determining 404 a set of logical channels having data available for transmission, which have parameter set / TTI X as a configured parameter set / TTI. The method 400 further determines a priority order among logical channels of the set of logical channels determined above based on the parameter set / TTI priority and the logical channel priority. Specifically, the method 400 includes determining 406 logical channels of the set of logical channels having parameter set / TTI X as a preferred / primary parameter set / TTI. The method 400 determines 408 whether there are multiple logical channels having parameter set / TTI X as a preferred / primary parameter set / TTI. In response to determining 408 that there is only one logical channel having parameter set / TTI X as a preferred / primary parameter set / TTI, the method 400 assigns 410 the one logical channel having parameter set / TTI X as a preferred / primary parameter set / TTI as the highest priority. In response to determining 408 that there are multiple logical channels with parameter set / TTI X as a preferred / primary parameter set / TTI, the method 400 sorts 412 the multiple logical channels according to the configured logical channel priorities (e.g., in descending order of priority). In addition, the method 400 sorts 414 the logical channels with parameter set / TTI X as a secondary parameter set / TTI according to the secondary rank and the logical channel priority. For example, the method 400 sorts 414 the logical channels with X as a secondary parameter set / TTI by setting the logical channel with the indicated parameter set / TTI X as a first secondary parameter set / TTI to a higher priority than the logical channel with the indicated parameter set / TTI X as a second secondary parameter set / TTI, and so on. Then, for the logical channels with the multiple first or second secondary parameter sets having the indicated parameter set / TTI X, the channels are prioritized based on the logical channel priority. The method 400 assigns 416 resources to the respective logical channels that are part of the set of logical channels that take into account the calculated priority order of the logical channels using the LCP procedure.
[0058] The following is an example of the above method 400. In this example, the UE has three logical channels LCH#1, LCH#2, and LCH#3, as shown in Table 1. LCH#1 has parameter set 1 as its primary parameter set and parameter set 3 as its first secondary parameter set. In addition, LCH#2 has parameter set 2 as its primary parameter set, parameter set 1 as its first secondary parameter set, and parameter set 3 as its second secondary parameter set. In addition, LCH#3 has parameter set 3 as its primary parameter set and parameter set 1 as its first secondary parameter set. As shown, LCH#2 has the highest priority, with a logical channel priority of 1, and LCH#1 has the second highest priority, with a logical channel priority of 2, and LCH#3 has the third highest priority (e.g., the lowest priority), with a logical channel priority of 3. In an embodiment in which an UL grant is received for parameter set 1, data of LCH#1 can be prioritized over data of LCH#2 and LCH#3, regardless of the configured logical channel priorities, because parameter set 1 is only the primary parameter set for LCH#1.
[0059] Table 1
[0060] LCH#1 (priority 2) LCH#2 (priority 1) LCH#3 (priority 3) Main parameter set = 1 Main parameter set = 2 Main parameter set = 3 Auxiliary parameter set = 3 Auxiliary parameter set = 1 Auxiliary parameter set = 1 Auxiliary parameter set = 3
[0061] For another example, using the information from Table 1, for a UL grant for parameter set 1, the logical channel priority order is: LCH#1, LCH#2, LCH#3. This is because LCH#1 is the only logical channel with parameter set 1 as the primary parameter set, and both LCH#2 and LCH#3 have parameter set 1 as the first secondary parameter set, and LCH#2 has a higher priority (e.g., 1) than LCH#3 (e.g., 3). As yet another example, for a UL grant for parameter set 3, the logical channel priority order is: LCH#3, LCH#1, LCH#2. This is because LCH#3 is the only logical channel with parameter set 3 as the primary parameter set, LCH#1 is the only logical channel with parameter set 3 as the first secondary parameter set, and LCH#2 is the only logical channel with parameter set 3 as the second secondary parameter set.
[0062] Figure 5 is a schematic flow chart illustrating another embodiment of a method 500 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 500 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 500 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0063] In one embodiment, the network (e.g., gNB) configures a preferred / primary parameter set and a maximum TTI length for each logical channel. The primary / preferred parameter set is the parameter set that is most suitable for the transmission of the data of the logical channel in order to meet the QoS requirements (e.g., delay and reliability). The maximum TTI length value allows the logical channel to use all TTI lengths (regardless of the parameter set) unless the TTI length cannot meet the delay requirements of the logical channel. Therefore, any parameter set can be used to send the data of the logical channel as long as the TTI length is equal to or less than the configured maximum TTI length. It should be noted that the TTI length, which is a schedulable time unit from the MAC perspective, depends not only on the parameter set used (e.g., subcarrier spacing "SCS"), but also on the number of OFDM symbols used. In some embodiments, the TTI length can be reduced by keeping the same parameter set (or SCS) but reducing the number of OFDM symbols per TTI (e.g., using only two symbols per TTI), or by keeping the same number of OFDM symbols but scaling the SCS (e.g., reducing the symbol length).
[0064] In certain embodiments, reducing OFDM symbol length by SCS scaling may have certain benefits over and above reducing the number of OFDM symbols (e.g., for the same SCS). For example, smaller symbol lengths by SCS scaling may be a useful tool to enable fast pipeline processing of UL and DL channels (e.g., further tightening processing timelines and HARQ RTT by scaling the short TTI length of the SCS (i.e., reducing symbol duration).
[0065] Thus, in some embodiments, the MAC layer is aware of the parameter set and TTI length used for uplink transmissions. Based on the parameter set and TTI length, a mapping of logical channels to resources (e.g., an LCP process) is performed as indicated by the physical layer ("PHY") to the MAC when an uplink grant is received. The MAC entity prioritizes the following logical channels for which the preferred / primary parameter set configured is the same as the indicated parameter set used for uplink transmissions. This prioritization ensures that data for these logical channels is always sent using the most appropriate parameter set configuration in order to comply with the requirements of the parameter set configuration for which it is configured. If there are available remaining resources, logical channels for which the maximum TTI length configured is equal to or greater than the indicated TTI length are considered for transmission.
[0066] Turning to method 500, method 500 includes receiving 502 an UL grant for parameter set X and TTI length Y, i.e., uplink transmission according to the received uplink grant uses parameter set X and TTI length Y. Method 500 also includes: determining 504 a set of logical channels, which have parameter set X as a preferred / primary parameter set. Method 500 further determines a priority order among logical channels of the above-determined set of logical channels based on logical channel priorities. Specifically, method 500 determines 506 whether there are multiple logical channels with parameter set X as a preferred / primary parameter set. In response to determining 506 that there is only one logical channel with parameter set X as a preferred / primary parameter set, method 500 assigns 508 the one logical channel with parameter set X as a preferred / primary parameter set as the highest priority. In response to determining 506 that there are multiple logical channels with parameter set X as a preferred / primary parameter set, method 500 sorts 510 the multiple logical channels according to the configured logical channel priorities (e.g., in descending order of priority). In addition, the method 500 sorts 512 the logical channels with a maximum TTI length greater than or equal to Y according to the logical channel priority (if there are remaining resources). The method 500 assigns 514 resources to the respective logical channels based on the calculated priority order of the logical channels using the LCP process. In some embodiments, the LCP process is performed as defined in TS36.321 section 5.4.3.1 (e.g., using a token bucket, using a two-step process, etc.). In various embodiments, the method 500 first assigns 510 resources to the logical channels with parameter set X as the preferred / primary parameter set based on the calculated priority order 508 using the LCP process, and then assigns the remaining resources (if any) to the logical channels with a maximum TTI length greater than or equal to Y based on the calculated priority order 512.
[0067] The following is an example of the above method 500. In this example, the UE has four logical channels LCH#1, LCH#2, LCH#3, and LCH#4, as shown in Table 2. LCH#1 has parameter set 1 as its main parameter set, and 1 ms as its maximum TTI. In addition, LCH#2 has parameter set 2 as its main parameter set, and 0.5 ms as its maximum TTI. In addition, LCH#3 has parameter set 3 as its main parameter set, and 1 ms as its maximum TTI. In addition, LCH#4 has parameter set 1 as its main parameter set, and 1 ms as its maximum TTI. As shown, LCH#2 has the highest priority, and its logical channel priority is 1, LCH#1 has the second highest priority, and its logical channel priority is 2, LCH#3 has the third highest priority, and its logical channel priority is 3, and LCH#4 has the fourth highest priority (e.g., the lowest priority), and its logical channel priority is 4.
[0068] Table 2
[0069] LCH#1(Priority 2) LCH#2 (priority 1) LCH#3 (priority 3) LCH#4 (priority 4) Main parameter set = 1 Main parameter set = 2 Main parameter set = 3 Main parameter set = 1 Maximum TTI = 1ms Maximum TTI = 0.5 ms Maximum TTI = 1ms Maximum TTI = 1ms
[0070] For one example, using the information from Table 2, for a UL grant for parameter set 1 and a TTI length of 1 ms, the logical channel priority order is: LCH#1, LCH#4, LCH#3. This is because both LCH#1 and LCH#4 have parameter set 1 as the primary parameter set, and LCH#1 precedes LCH#4 because LCH#1 has a channel priority of 2, which is higher than the channel priority of 4 of LCH#4, and LCH#3 is the only remaining channel with a maximum TTI length greater than or equal to 1 ms. As yet another example, for a UL grant for parameter set 2 and a TTI length of 0.5 ms, the logical channel priority order is: LCH#2, LCH#1, LCH#3, LCH#4. This is because LCH#2 is the only logical channel with parameter set 2 as the primary parameter set, and all LCH#1, LCH#3, and LCH#4 have a maximum TTI length greater than or equal to 0.5 ms, and then LCH#1, LCH#3, and LCH#4 are sorted based on their channel priorities. As another example, for a UL grant for parameter set 1 and a TTI length of 0.5 ms, the logical channel priority order is: LCH#1, LCH#4, LCH#2, LCH#3. This is because both LCH#1 and LCH#4 have parameter set 1 as the primary parameter set, and LCH#1 precedes LCH#4 because LCH#1 has a channel priority of 2, which is higher than the channel priority of LCH#4, and both LCH#2 and LCH#3 have a maximum TTI length greater than or equal to 0.5 ms, and then LCH#2 and LCH#3 are sorted based on their channel priorities. As another example, for a UL grant for parameter set 3 and a TTI length of 1 ms, the logical channel priority order is: LCH#3, LCH#1, LCH#4. This is because LCH#3 is the only logical channel with parameter set 3 as the primary parameter set, and both LCH#1 and LCH#4 have a maximum TTI length greater than or equal to 1 ms, and LCH#1 and LCH#4 are ordered based on their channel priority.
[0071] Figure 6 is a schematic flow chart illustrating yet another embodiment of a method 600 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 600 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 600 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0072] In various embodiments, the network (e.g., gNB) configures a preferred / primary TTI length and a maximum TTI length for each logical channel. The primary / preferred TTI length may be the TTI length that is most suitable for the transmission of data for a particular logical channel in order to meet QoS requirements like latency. The maximum TTI length value allows the logical channel to use all TTI lengths (regardless of the parameter set) unless the TTI length cannot meet the latency requirements of the channel. Therefore, any TTI / parameter set may be used to send data for a logical channel as long as the TTI length is equal to or less than the configured maximum TTI length. In some embodiments, the MAC only needs to know the TTI length used for uplink transmissions when performing the mapping of logical channels to resources (e.g., LCP process). In various embodiments, the only restriction that restricts some logical channels to certain resources corresponds to latency requirements, which may be equivalent to TTI length from the MAC point of view, regardless of TTI lengths from different parameter sets (e.g., SCS scaling), or different numbers of OFDM symbols for one parameter set. Therefore, in some embodiments, the parameter set may be transparent to the MAC. In some embodiments, the MAC prioritizes logical channels for which the configured preferred / primary TTI is the same as the indicated TTI length for uplink transmissions. If there are available remaining resources, logical channels for which the configured maximum TTI length is equal to or greater than the indicated TTI length are considered for transmission.
[0073] Turning to method 600, method 600 includes receiving 602 a UL grant for a TTI length X. Method 600 also includes determining 604 a set of logical channels having a TTI length X as a preferred / primary TTI length as indicated in the UL grant. Method 600 further determines a priority order among logical channels of the set of logical channels determined above based on the logical channel priorities. Specifically, method 600 determines 606 whether there are multiple logical channels having a TTI length X as a preferred / primary TTI length. In response to determining 606 that there is only one logical channel having a TTI length X as a preferred / primary TTI length, method 600 assigns 608 the one logical channel having a TTI length X as a preferred / primary TTI length as the highest priority. In response to determining 606 that there are multiple logical channels having a TTI length X as a preferred / primary TTI length, method 600 sorts 610 the multiple logical channels according to the configured logical channel priorities (e.g., in descending order of priority). In addition, the method 600 sorts 612 the logical channels with a maximum TTI length greater than or equal to X according to the logical channel priority (if there are remaining resources). The method 600 assigns 614 resources to the respective logical channels based on the calculated priority order of the logical channels using the LCP process. In some embodiments, the method 600 first assigns 610 resources to the logical channels with a TTI length X as the preferred / primary TTI length based on the calculated priority order 608 using the LCP process, and then assigns the remaining resources (if any) to the logical channels with a maximum TTI length greater than or equal to X based on the calculated priority order 612.
[0074] Figure 7 is a schematic flow chart illustrating yet another embodiment of a method 700 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 700 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 700 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0075] In the above about Figure 4 , 5In the embodiments described in and 6, only a subset of logical channels are considered for the LCP process (e.g., there are logical channel restrictions for the LCP process). For example, during the mapping of logical channels to resources (e.g., during the LCP process), only those logical channels with a configured primary / secondary parameter set / TTI or a maximum TTI that matches the UL grant are considered. In some embodiments, all logical channels may be considered for LCP (e.g., there may be no restrictions on the mapping of logical channels to resources). In such an embodiment, each logical channel may be configured with a parameter set / TTI. This configuration is the most suitable parameter set / TTI for transmission. During the LCP process, the MAC entity prioritizes those logical channels that have the same configured parameter set / TTI as the parameter set / TTI used for uplink transmission. For configurations in which there are multiple logical channels with a configured parameter set / TTI that is the same as the indicated parameter set / TTI, the logical channels are served in descending order of priority (e.g., according to the logical channel priority). For the remaining resources (if any), all other logical channels are considered (e.g., in descending order of logical channel priority).
[0076] Turning to method 700, method 700 includes receiving 702 a UL grant for parameter set / TTI length X. Method 700 also includes determining 704 a set of logical channels having parameter set / TTI length X as the configured parameter set / TTI length. Method 700 further determines a priority order among logical channels of the set of logical channels determined above based on the logical channel priority. Specifically, method 700 determines 706 whether there are multiple logical channels having parameter set / TTI length X as the configured parameter set / TTI length. In response to determining 706 that there is only one logical channel having parameter set / TTI length X as the configured parameter set / TTI length, method 700 assigns 708 the one logical channel having parameter set / TTI length X as the configured parameter set / TTI length as the highest priority. In response to determining 706 that there are a plurality of logical channels having parameter set / TTI length X as the configured parameter set / TTI length, the method 700 sorts the plurality of logical channels according to the configured logical channel priorities (e.g., in descending order of priority) 710. If remaining resources are available, the method 700 assigns 712 resources to the various logical channels based on the calculated priority order of the logical channels using an LCP procedure, and assigns resources to any remaining logical channels according to the configured logical channel priorities (e.g., in descending order of priority).
[0077] Certain embodiments described herein relate to prioritization / restriction of data radio bearers ("DRBs") of corresponding dedicated traffic channels ("DTCH"), respectively. In various embodiments, the local channel-to-resource restrictions described herein may not be applied to specific logical channels (e.g., signaling radio bearers). For example, in certain embodiments, the remote unit 102 may be enabled to send measurement reports regarding any parameter set / TTI. In some embodiments, certain logical channels may be configured to which no parameter set / TTI restrictions are applied. Specifically, in certain embodiments, the network (e.g., gNB) may configure a logical channel to be mapped to any parameter set / TTI length. In some embodiments, a specific codepoint may be defined within an RRC configuration (e.g., an RRC configuration that configures a preferred / primary parameter set / TTI) indicating that the logical channel treats any parameter set / TTI as its preferred / primary parameter set / TTI.
[0078] In some embodiments, MAC control elements may take precedence over data from logical channels. In various embodiments, certain logical channels may take precedence over MAC control elements. For example, data from very low-delay-tolerant logical channels may take precedence over MAC control elements. In some embodiments, data from some logical channels may take precedence over MAC control elements. For example, for parameter sets (e.g., short symbol lengths) used for URLLC communications, data from logical channels may take precedence over MAC control elements. In one embodiment, data from a logical channel having a parameter set / TTI length (as indicated by the PHY to the MAC) used for uplink transmission configured as a preferred / primary parameter set / TTI may take precedence over a MAC control element, and data from other logical channels may not take precedence over a MAC control element.
[0079] In some embodiments, there are two types of scheduling modes: dynamic resource scheduling mode and unlicensed scheduling mode. In some embodiments, the dynamic resource scheduling mode is characterized in that the remote unit 102 will not autonomously perform uplink transmissions, but will follow the corresponding uplink scheduling assignments provided by the network (e.g., base unit 104, gNB). However, in some cases, uplink transmissions may be significantly delayed because the remote unit 102 must first request and then receive a suitable uplink grant before performing uplink transmissions. On the other hand, the unlicensed scheduling mode can allow the remote unit 102 to immediately perform uplink transmissions in some cases without having to request or receive corresponding resource allocations from the network, thereby significantly reducing delays. In various embodiments, the unlicensed scheduling mode can be used only for certain logical channels (e.g., URLLC). In some embodiments, the network configures whether to allow logical channels to use the unlicensed scheduling mode. In some embodiments, the relative priority order defined in TS36.321 section 5.4.3.1 considered by the MAC during logical channel prioritization can be different depending on the scheduling mode. Specifically, data from a logical channel using the unlicensed scheduling mode can take precedence over a MAC control element. In some embodiments, if the remote unit 102 performs uplink transmissions according to a grant-exempt resource allocation, the MAC may use different relative priorities than in a configuration where uplink resources are allocated (eg, dynamically) via a UL grant.
[0080] In some embodiments, there may be a configured mapping between MAC control elements and parameter sets / TTIs. In various embodiments, the network may benefit from receiving the MAC control elements as quickly as possible (e.g., for uplink scheduling, it may be important to keep the reporting delays for buffer status reports ("BSRs") and power headroom reports ("PHRs") short). In some embodiments, the remote unit 102 is scheduled for simultaneous transmission of multiple transport blocks (e.g., in carrier aggregation). Therefore, in such embodiments, the remote unit 102 may map the MAC control elements to transport blocks using the minimum TTI length and HARQ RTT, respectively. This may ensure that the MAC control elements are received with the shortest delay so that the base unit 104 can use the information carried in the MAC control elements as quickly as possible.
[0081] In one embodiment, a mapping between a MAC control element and an allowed parameter set / TTI may be performed. This mapping may be configured by network signaling or hard-coded in a specification. Therefore, the remote unit 102 may use this configuration during the LCP process (e.g., when generating a transport block). In various embodiments, the mapping configuration enables the network to prohibit the remote unit 102 from mapping certain MAC control elements to a specific parameter set / TTI (e.g., a MAC control element may not be mapped to a parameter set for a delay-critical service such as URLLC). In one embodiment, a mapping between a MAC control element and a scheduling mode may be performed. This mapping may be configured by network signaling or hard-coded in a specification. Therefore, the remote unit 102 may use this configuration during the LCP process (e.g., when generating a transport block). In various embodiments, the mapping configuration enables the network to prohibit the remote unit 102 from mapping certain MAC control elements uplink transmissions using a specific scheduling mode (e.g., a MAC control element may not be mapped to a transmission block using a license-free scheduling mode, such as a URLLC transmission using a license-free scheduling mode).
[0082] In some embodiments, the MAC control element may be configured so that no parameter set / TTI restriction applies. For example, the network may configure the MAC control element to be mapped to any parameter set / TTI length. In certain embodiments, a specific code point may be defined within the RRC configuration (e.g., an RRC configuration that configures a preferred / primary parameter set / TTI) that indicates that the logical channel identifier identifying the MAC control element considers any parameter set / TTI as its preferred / primary parameter set / TTI. In various embodiments, the specification or elsewhere may indicate that the MAC control element may be sent using any parameter set / TTI.
[0083] In some embodiments, the RRC inactive state indicates a power optimization state, in which the remote unit 102 is allowed to send a certain amount of data (e.g., small data) without switching to the RRC connected state. In some embodiments, in the RRC inactive state, when the remote unit 102 performs LCP / UL data transmission, there may be no restriction of logical channels to parameter sets / TTIs. In such embodiments, each logical channel can use all TTI lengths of any parameter set. In some embodiments, when the remote unit 102 is directed to the inactive state by the network and (later) intends to send on the uplink, the network may not know the radio conditions of the remote unit and may not know the buffer state of the remote unit 102 (e.g., the network does not know that the remote unit 102 intends to send those data). In such an embodiment, the base unit 104 may not be able to assign resources for a specific parameter set / TTI suitable for the data that the remote unit 102 intends to send. Moreover, in some embodiments, the remote unit 102 can send uplink data in a contention-based manner (e.g., without receiving an uplink grant in advance), and limiting the mapping of LCH to parameter sets / TTIs may not have much benefit. In various embodiments, upon being directed into the inactive mode, the MAC in the remote unit 102 may disable all previously configured restrictions (eg, mapping of logical channels to parameter sets / TTIs).
[0084] In some embodiments, the PBR value may depend on whether the parameter set / TTI length used for uplink transmission is considered as the primary / preferred parameter set / TTI of the logical channel. In an embodiment where the parameter set / TTI used for uplink transmission is the preferred / primary parameter set / TTI of the logical channel, data transmission of this logical channel may be maximized (e.g., the MAC may allocate resources for all data from the logical channel before the PBR of the logical channel whose parameter set is not the preferred / primary parameter set / TTI is met). Table 3 is used to illustrate various examples of these embodiments.
[0085] Table 3
[0086] LCH#1(Priority 2) LCH#2 (priority 1) LCH#3 (priority 3) Main parameter set = 1 Main parameter set = 2 Main parameter set = 3 Auxiliary parameter set = 3 Auxiliary parameter set = 1 Auxiliary parameter set = 1 Auxiliary parameter set = 3
[0087] In one example, as with respect to Figure 4As described, the priority order of logical channels for UL grants using parameter set 1 can be: LCH#1, LCH#2, LCH#3. In some embodiments, the MAC can allocate all data available for transmission from LCH#1 before allocating any (remaining) resources to LCH#2, LCH#3. Behavior in this regard can be achieved by limiting the PBR of LCH#1 to be indicated as infinity (for example, the MAC can allocate resources for all data available for transmission on the logical channel before satisfying the PBR of lower priority logical channels). In some embodiments, this behavior can be achieved when the LCP process is first performed for all logical channels having the indicated parameter set (in the UL grant) as the primary / preferred parameter set, and then the LCP process is performed for all logical channels having the indicated parameter set as the secondary parameter set.
[0088] Figure 8 is a schematic flow chart illustrating yet another embodiment of a method 800 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 800 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 800 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0089] The method 800 may include receiving 802 an uplink grant corresponding to an uplink transmission parameter (e.g., a parameter set, a TTI length, etc.). The method 800 may also include determining 804 a priority order of the plurality of logical channels based on an uplink transmission parameter priority corresponding to the uplink transmission parameter and a logical channel priority of the plurality of logical channels. The method 800 may include assigning 806 a resource to a logical channel of the plurality of logical channels based on the priority order.
[0090] In one embodiment, the uplink transmission parameter includes an indication of a parameter set. In another embodiment, the parameter set includes a subcarrier spacing, an orthogonal frequency division multiplexing symbol duration, a cyclic prefix duration, a number of symbols per scheduling interval, or some combination thereof. In certain embodiments, the uplink transmission parameter includes an indication of a transmission time interval. In various embodiments, each of the plurality of logical channels includes a primary uplink transmission parameter and one or more secondary uplink transmission parameters. In some embodiments, the primary uplink transmission parameter has a first priority, each of the one or more secondary uplink transmission parameters has a respective priority from a set of one or more second priorities, the first priority is greater than each priority in the set of one or more second priorities, and each priority in the set of one or more priorities is sorted relative to other priorities in the set of one or more priorities.
[0091] In some embodiments, the primary uplink transmission parameter and the one or more secondary uplink transmission parameters each include a parameter set, a transmission time interval length, or some combination thereof. In one embodiment, the processor determines a priority order of the multiple logical channels based on an uplink transmission parameter priority corresponding to the uplink transmission parameter and a logical channel priority of the multiple logical channels by: selecting a first set of logical channels from the multiple logical channels in response to the primary uplink transmission parameter of the logical channel of the first set of logical channels matching the uplink transmission parameter, and sorting the logical channels in the first set of logical channels according to the logical channel priority of each logical channel in the first set of logical channels; and for each of the one or more secondary uplink transmission parameters, selecting a second set of logical channels from the multiple logical channels in response to the respective secondary uplink transmission parameter of the logical channel of the second set of logical channels matching the uplink transmission parameter, and sorting the logical channels in the second set of logical channels according to the logical channel priority of each logical channel in the second set of logical channels.
[0092] In some embodiments, ordering the logical channels in the first set of logical channels includes ordering the logical channels in the first set of logical channels in descending order of priority, and ordering the logical channels in the second set of logical channels includes ordering the logical channels in the second set of logical channels in descending order of priority. In various embodiments, the uplink transmission parameter priority includes a first priority corresponding to the first uplink transmission parameter and a second priority corresponding to the second uplink transmission parameter. In some embodiments, the first uplink transmission parameter includes a master parameter set, and the second uplink transmission parameter includes a maximum transmission time interval length.
[0093] In one embodiment, the first uplink transmission parameter includes a primary transmission time interval length, and the second uplink transmission parameter includes a maximum transmission time interval length. In some embodiments, the uplink transmission parameter priority is ignored during operation in the inactive mode. In various embodiments, the processor determines the priority order of multiple logical channels based on the uplink transmission parameter priority corresponding to the uplink transmission parameter and the logical channel priority of the multiple logical channels in the following manner: in response to the primary uplink transmission parameter of the logical channel in the first set of logical channels matching the uplink transmission parameter, selecting a first set of logical channels in the multiple logical channels, and sorting the logical channels in the first set of logical channels according to the logical channel priority of each logical channel in the first set of logical channels; and in response to the secondary uplink transmission parameter of the logical channel in the second set of logical channels matching the uplink transmission parameter, selecting a second set of logical channels in the multiple logical channels, and sorting the logical channels in the second set of logical channels according to the logical channel priority of each logical channel in the second set of logical channels.
[0094] In one embodiment, the logical channels in the first set of logical channels take precedence over the media access control control element. In some embodiments, ordering the logical channels in the first set of logical channels comprises ordering the logical channels in the first set of logical channels in descending order of priority, and ordering the logical channels in the second set of logical channels comprises ordering the logical channels in the second set of logical channels in descending order of priority. In various embodiments, each logical channel in the plurality of logical channels comprises a primary uplink transmission parameter. In some embodiments, the primary uplink transmission parameter comprises a parameter set, a transmission time interval length, or some combination thereof. In one embodiment, the processor determines a priority order of multiple logical channels based on uplink transmission parameter priorities corresponding to the uplink transmission parameters and logical channel priorities of the multiple logical channels in the following manner: in response to a primary uplink transmission parameter of a logical channel in a first set of logical channels matching the uplink transmission parameter, selecting a first set of logical channels from multiple logical channels, and sorting the logical channels in the first set of logical channels according to the logical channel priority of each logical channel in the first set of logical channels; and in response to a primary uplink transmission parameter of a logical channel in a second set of logical channels not matching the uplink transmission parameter, selecting a second set of logical channels from multiple logical channels, and sorting the logical channels in the second set of logical channels according to the logical channel priority of each logical channel in the second set of logical channels.
[0095] In one embodiment, ordering the logical channels in the first set of logical channels includes ordering the logical channels in the first set of logical channels in descending order of priority, and ordering the logical channels in the second set of logical channels includes ordering the logical channels in the second set of logical channels in descending order of priority. In some embodiments, the logical channels in the plurality of logical channels include a primary uplink transmission parameter indicating that the logical channel treats any parameter set or any transmission time interval length as a primary uplink transmission parameter. In some embodiments, the logical channels in the plurality of logical channels include a primary uplink transmission parameter that takes precedence over a media access control control element. In various embodiments, the processor associates the uplink transmission parameter with the media access control control element. In one embodiment, the media access control control element includes a primary uplink transmission parameter indicating that the media access control control element treats any parameter set or any transmission time interval length as a primary uplink transmission parameter. In some embodiments, the processor determines a priority bit rate based on the uplink transmission parameter priority.
[0096] In various embodiments, such as in Fig. 9In one such embodiment, the priority order can be determined based on multiple uplink transmission parameters. In one such embodiment, the basic unit 104 can configure a preferred / main parameter set or a set of allowed parameter sets and a maximum TTI length for each logical channel. In some embodiments, the main / preferred parameter set is a parameter set that is most suitable for the transmission of data of the logical channel to meet QoS requirements (e.g., reliability). In some embodiments, if a set of parameter sets is configured for the LCH, the "allowed" parameter set can refer to a parameter set that is suitable for the transmission of data of the logical channel to meet QoS requirements (e.g., reliability). In various embodiments, unless the TTI length cannot meet the delay requirements of the logical channel, the maximum TTI length value enables the logical channel to use all TTI lengths. In one embodiment, the data of the logical channel can be sent as long as the TTI length is equal to or less than the configured maximum TTI length. In some embodiments, the TTI length, which can refer to a schedulable time unit from the perspective of the MAC, can depend not only on the parameter set used (e.g., subcarrier spacing "SCS"), but also on the number of OFDM symbols used. In some embodiments, the MAC layer knows the parameter set and TTI length used for uplink transmission. In such an embodiment, based on the parameter set and TTI length, a mapping of logical channels to resources (e.g., an LCP process) may be performed as indicated to the MAC by the physical layer ("PHY") upon receipt of an uplink grant. In various embodiments, in response to receiving an uplink grant, the MAC entity considers only those logical channels that have a configured (e.g., allowed) parameter set and maximum TTI that matches the UL grant during the mapping of logical channels to resources (e.g., during the LCP process). In such an embodiment, this may facilitate reliability and latency requirements of the logical channels to be met. In some embodiments, the order in which the LCHs considered for service are based on configured logical channel priorities.
[0097] In various embodiments, the base unit 104 may configure a set of allowed parameter sets and a maximum TTI length for each configured "allowed" parameter set of a logical channel. In such an embodiment, the "allowed" parameter set may define a parameter set suitable for the transmission of data of the logical channel to meet QoS requirements (e.g., reliability). In some embodiments, the maximum TTI length value enables the logical channel to use all TTI lengths unless the TTI length cannot meet the delay requirements of the logical channel. In some embodiments, the data of the logical channel may be sent as long as the TTI length is equal to or less than the configured maximum TTI length. Because different parameter sets may have different OFDM symbol lengths and also have different HARQ RTTs, the maximum TTI length may depend on the parameter set used. In various embodiments, the MAC layer may know the parameter set and TTI length used for uplink transmission. Based on the parameter set and TTI length, as indicated by the PHY to the MAC when an uplink grant is received, a mapping of logical channels to resources (e.g., an LCP process) may be performed. In some embodiments, in response to receiving an uplink grant, the MAC entity may only consider logical channels with a configured (e.g., allowed) parameter set and corresponding maximum TTI length that matches the UL grant during logical channel to resource mapping (e.g., during an LCP procedure). This may facilitate reliability and latency requirements of the logical channels to be met. In one embodiment, the order in which the LCHs considered for servicing may be based on configured logical channel priorities.
[0098] In some embodiments, the same TTI may be generated by different parameter sets. In certain embodiments, if only TTI length is considered during LCP (e.g., logical channel restrictions), the TB may contain data for an LCH using a parameter set that is not suitable for transmission in response to power control settings / parameters with parameter sets specific to the parameter set (e.g., P0, α). In various embodiments, because UL grants for short TTI lengths can be used for eMBB (e.g., according to the power control settings of eMBB), the MAC can multiplex URLLC data on the TB (because the TTI length matches), even if the parameter set is not suitable for URLLC (e.g., the reliability requirements of URLLC may not be met). Therefore, in some embodiments, parameter sets and TTI lengths may be considered for the LCP process.
[0099] In various embodiments, the parameter set used for uplink transmission can be indicated to the MAC layer by an index (e.g., the PHY does not indicate a complete set of parameters associated with the parameter set such as SCS, CP length). In such an embodiment, the index can refer to a list describing the parameter set used and its parameters (e.g., subcarrier spacing, CP length, etc.). In certain embodiments, the parameter sets in the list can be sorted according to reliability requirements (e.g., block error rate "BLER"). For example, the parameter set referenced by index 1 can meet the most stringent reliability requirements (e.g., the lowest BLER). In some embodiments, the basic unit 104 can configure the maximum parameter set and maximum TTI length for each logical channel. In various embodiments, the MAC layer can know the parameter set (e.g., index) and TTI length used for uplink transmission. Based on the parameter set and TTI length, as indicated by the PHY to the MAC when an uplink grant is received, a mapping of logical channels to resources (e.g., LCP process) can be performed. In some embodiments, in response to receiving an uplink grant, the MAC may consider only those logical channels that have a configured maximum parameter set and maximum TTI that match the UL grant during the mapping of logical channels to resources (e.g., during the LCP process). In various embodiments, only those logical channels are "allowed" for LCP for which the configured maximum parameter set value is greater than or equal to the parameter set index value indicated to the MAC, and for which the configured maximum TTI length is greater than or equal to the TTI length indicated to the MAC. In such embodiments, this can facilitate meeting reliability and latency requirements for logical channels. In one embodiment, the order in which the LCHs considered for service are based on the configured logical channel priorities.
[0100] In some embodiments, each LCH may be configured with a set of "allowed" parameter sets and optionally also with a maximum TTI length. In various embodiments, multiple SR resources may be independently configured (e.g., SR resources may be configured per parameter set). In certain embodiments, having multiple independent SR resources may be used to convey additional information within a scheduling request. For example, based on the SR resources used by the remote unit 102, the base unit 104 may determine the parameter set requested by the remote unit 102 for the corresponding UL transmission. In some embodiments, for the case where the LCH is configured with more than one parameter set, the remote unit 102 may select the SR resource corresponding to the first configured parameter set (e.g., the highest priority parameter set). In various embodiments, if data arrival over the LCH triggers a BSR and the remote unit 102 does not have UL resources for the transmission of the BSR, the remote unit 102 may select an SR resource according to the first parameter set (e.g., the highest priority parameter set) configured for this LCH. In some embodiments, the remote unit 102 may select the nearest SR resource from the configured SR resources corresponding to the configured resources.
[0101] In certain embodiments, in response to a MAC entity being requested to send multiple MAC protocol data units ("PDUs") in one TTI, the order in which grants are processed may be determined by the remote unit 102 implementation. In other embodiments that support multiple parameter sets and corresponding logical channel restrictions, the behavior of the remote unit 102 (e.g., the order in which TBs are generated) may be predefined. In such embodiments, depending on the order in which the remote unit 102 processes UL grants in the event that multiple UL grants have been received simultaneously, the contents of the corresponding TBs may be different.
[0102] For example, there may be two LCHs, as listed in Table 4.
[0103] Table 4
[0104] LCH#1 (priority 1) LCH#2 (priority 2) "Main" parameter set = parameter set 1 "Main" parameter set = parameter set 1 "Auxiliary" parameter set = parameter set 2 Maximum TTI = 0.5 ms Maximum TTI = 1ms
[0105] In various embodiments, the remote unit 102 may receive two UL grants simultaneously. In such an embodiment, the first UL grant may indicate parameter set 1 and TTI=0.5 ms, and the second UL grant may indicate parameter set 2 and TTI=0.5 ms. In such an embodiment, the content of the TB may be that the remote unit 102 processes the second UL grant followed by the first UL grant. Therefore, the first TB may use parameter set 2 of LCH#1 (e.g., the size of the first TB fits the amount of data of LCH#1), and the second TB may use parameter set 1 of LCH#2 (e.g., the size of the second TB fits the amount of data of LCH#2). In addition, in such an embodiment, the content of the TB may be that the remote unit 102 processes the first UL grant followed by the second UL grant. Therefore, the first TB may use parameter set 1 of LCH#1 and LCH#2 (e.g., the size of the first TB does not fit the amount of data of LCH#1), and the second TB may use parameter set 2 of LCH#1 plus padding (e.g., the size of the second TB is too large for the amount of data of LCH#1).
[0106] In some embodiments, the processing order may result in poor efficiency (eg, sending padding for TB2). Therefore, due to logical channel limitations, the processing order may be different.
[0107] In some embodiments, it may be beneficial for the base unit 104 to be aware of the behavior of the remote unit 102 and the contents of the TB (e.g., the base unit 104 may update its buffer status information based on the predicted behavior of the remote unit 102). In various embodiments, rules may be defined that specify the behavior of the remote unit 102 (e.g., the order in which the remote unit 102 processes UL grants). In one embodiment, the remote unit 102 may process the first UL grant that considers the least number of logical channels (e.g., the first processed UL grant for parameter set 2 in the above example). In some embodiments, the remote unit 102 may determine the order according to some predefined parameter set priority order. In various embodiments, the component carrier order may be predefined or signaled to the remote unit 102.
[0108] Fig. 9 is a schematic flow chart illustrating one embodiment of a method 900 for determining a priority order based on uplink transmission parameters. In some embodiments, the method 900 is performed by an apparatus such as the remote unit 102. In certain embodiments, the method 900 may be performed by a processor executing program code, such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc.
[0109] The method 900 may include receiving 902 an uplink grant corresponding to an uplink transmission parameter including a parameter set and an indication of a transmission time interval length. The method 900 may also include determining 904 a priority order of the plurality of logical channels based on the uplink transmission parameter and the logical channel priorities of the plurality of logical channels. The method 900 may include assigning 906 resources to a logical channel of the plurality of logical channels based on the priority order.
[0110] In one embodiment, the parameter set includes a subcarrier spacing, an orthogonal frequency division multiplexing symbol duration, a cyclic prefix duration, or some combination thereof. In yet another embodiment, the method 900 includes determining a priority order of a plurality of logical channels based on an uplink transmission parameter and a logical channel priority of the plurality of logical channels by: selecting a set of logical channels from the plurality of logical channels in response to a parameter set parameter for each logical channel in the set of logical channels including a parameter set and a maximum transmission time interval length for each logical channel in the set of logical channels being less than or equal to a transmission time interval; and sorting the logical channels in the set of logical channels according to the logical channel priority of each logical channel in the set of logical channels. In certain embodiments, sorting the logical channels in the set of logical channels includes sorting the logical channels in the set of logical channels in descending priority order. In various embodiments, the parameter set parameter includes one or more parameter sets. In some embodiments, the logical channels in the set of logical channels take precedence over the media access control control element.
[0111] In some embodiments, the indication of the parameter set comprises an index corresponding to the parameter set.In one embodiment, each logical channel of the plurality of logical channels is configured with a set of parameter sets and a maximum transmission time interval length allowed by the respective logical channel.
[0112] In some embodiments, each of the plurality of logical channels is configured with a maximum parameter set and a maximum transmission time interval length allowed by the respective logical channel. In various embodiments, the method 900 includes determining a priority order of the plurality of logical channels based on uplink transmission parameters and logical channel priorities of the plurality of logical channels by: selecting a set of logical channels in the plurality of logical channels in response to a maximum parameter set of each logical channel in the set of logical channels being less than or equal to the parameter set and a maximum transmission time interval length of each logical channel in the set of logical channels being less than or equal to the transmission time interval length; and ordering the logical channels in the set of logical channels according to the logical channel priority of each logical channel in the set of logical channels. In some embodiments, the method 900 includes selecting a scheduling request resource for transmission, and the scheduling request resource corresponds to a parameter set requested for uplink transmission.
[0113] In one embodiment, the method 900 includes selecting a scheduling request resource based on a first parameter set of a set of parameter sets configured for a logical channel in a plurality of logical channels for which a buffer status report is triggered due to data becoming available for transmission. In certain embodiments, the method 900 includes receiving a plurality of uplink grants and determining an order for processing the plurality of uplink grants based on a number of logical channels in a plurality of logical channels configured with parameter sets corresponding to respective uplink grants in the plurality of uplink grants. In various embodiments, the method 900 includes receiving a plurality of uplink grants and determining an order for processing the plurality of uplink grants based on a predefined parameter set priority order. In one embodiment, the method 900 includes receiving a plurality of uplink grants and determining an order for processing the plurality of uplink grants based on a predefined order, a signaled order, or some combination thereof.
[0114] Embodiments may be practiced in other specific forms. The described embodiments should be considered in all respects as merely illustrative and not restrictive. Therefore, the scope of the present invention is indicated by the appended claims rather than the preceding description. All changes within the meaning and equivalent range of the claims are included within their scope.
Claims
1. A device comprising: A processor, the processor: indicating an uplink transmission parameter to a media access control layer, wherein the uplink transmission parameter corresponds to an uplink grant, the uplink transmission parameter comprises a parameter set and an indication of an uplink transmission duration, and the parameter set comprises a subcarrier spacing; and The resources allocated by the uplink grant are assigned to the logical channels based on the uplink transmission parameters and the logical channel priorities of the multiple logical channels through the media access control layer, wherein each of the multiple logical channels is configured with a set of parameter sets allowed by the respective logical channel, a maximum uplink transmission duration, and information indicating whether data of the respective logical channel is allowed to be sent on the configured grant.
2. The device according to claim 1, wherein: The parameter set includes an OFDM symbol duration, a cyclic prefix duration, or some combination thereof.
3. The device according to claim 1, wherein: The processor assigns, based on the uplink transmission parameters and the logical channel priorities of the plurality of logical channels, resources allocated by the uplink grant to the logical channels in the following manner: selecting a set of logical channels from the plurality of logical channels in response to a parameter set parameter of each logical channel from the set of logical channels including the parameter set and a maximum uplink transmission duration of each logical channel from the set of logical channels being greater than or equal to the uplink transmission duration; as well as Resources are assigned to logical channels in the set of logical channels based on a logical channel priority of each logical channel in the set of logical channels.
4. The device according to claim 3, wherein: The processor assigns logical channels in the set of logical channels by sorting the logical channels in the set of logical channels in descending priority order.
5. The device according to claim 3, wherein: The parameter set parameters include one or more parameter sets.
6. The device according to claim 3, wherein: A logical channel in the set of logical channels takes precedence over a medium access control control element.
7. The device according to claim 1, wherein: A logical channel in the set of logical channels having information indicating that data of the logical channel is allowed to be sent on the configured grant takes precedence over a medium access control control element for uplink transmission corresponding to the configured grant.
8. The device according to claim 1, wherein: The indication of the parameter set includes an index corresponding to the parameter set.
9. The device according to claim 1, wherein: Each logical channel of the plurality of logical channels is configured with a maximum set of parameters allowed by the respective logical channel and the maximum uplink transmission duration.
10. The device according to claim 1, wherein: The processor assigns, based on the uplink transmission parameters and the logical channel priorities of the plurality of logical channels, resources allocated by the uplink grant to the logical channels in the following manner: selecting a set of logical channels in the plurality of logical channels in response to a maximum parameter set for each logical channel in the set of logical channels being less than or equal to the parameter set and a maximum uplink transmission duration for each logical channel in the set of logical channels being greater than or equal to the uplink transmission duration; as well as Resources are assigned to logical channels in the set of logical channels based on a logical channel priority of each logical channel in the set of logical channels.
11. The device according to claim 1, wherein: The processor selects a scheduling request resource for transmission, and the scheduling request resource corresponds to a parameter set requested for uplink transmission.
12. The device according to claim 11, wherein The processor selects the scheduling request resource according to a first parameter set of a set of parameter sets for configuration of a logical channel among a plurality of logical channels for which a buffer status report is triggered due to data becoming available for transmission.
13. The device according to claim 1, wherein: The receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on the number of logical channels of the plurality of logical channels configured with parameter sets corresponding to respective uplink grants of the plurality of uplink grants.
14. The device according to claim 1, wherein: The receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on a predefined parameter set priority order.
15. The device according to claim 1, wherein: The receiver receives a plurality of uplink grants and determines an order for processing the plurality of uplink grants based on a predefined order, a signaled order, or some combination thereof.
16. The device according to claim 1, wherein A medium access control control element is transmittable on the uplink grant for any parameter set and any uplink transmission duration.
17. A method comprising: indicating uplink transmission parameters to a medium access control layer, wherein the uplink transmission parameters correspond to an uplink grant, the uplink transmission parameters include a parameter set and an indication of an uplink transmission duration, and the parameter set includes a subcarrier spacing; and The resources allocated by the uplink grant are assigned to the logical channels based on the uplink transmission parameters and the logical channel priorities of the multiple logical channels through the media access control layer, wherein each of the multiple logical channels is configured with a set of parameter sets allowed by the respective logical channel, a maximum uplink transmission duration, and information indicating whether data of the respective logical channel is allowed to be sent on the configured grant.
18. The method according to claim 17, wherein: The parameter set includes an OFDM symbol duration, a cyclic prefix duration, or some combination thereof.
19. The method according to claim 17, wherein: Based on the uplink transmission parameters and the logical channel priorities of the plurality of logical channels, assigning the resources allocated by the uplink grant to the logical channels comprises: selecting a set of logical channels from among the plurality of logical channels in response to a parameter set parameter of each logical channel from among the set of logical channels including the parameter set and a maximum uplink transmission duration of each logical channel from among the set of logical channels being greater than or equal to the uplink transmission duration; and Resources are assigned to logical channels in the set of logical channels based on a logical channel priority of each logical channel in the set of logical channels.
20. The method according to claim 19, wherein: Assigning the resource to a logical channel in the set of logical channels includes sorting the logical channels in the set of logical channels in descending priority order.
21. The method according to claim 19, wherein: The parameter set parameters include one or more parameter sets.
22. The method according to claim 19, wherein: A logical channel in the set of logical channels takes precedence over a medium access control control element.
23. The method according to claim 17, wherein: A logical channel in the set of logical channels having information indicating that data of the logical channel is allowed to be sent on the configured grant takes precedence over a medium access control control element for uplink transmission corresponding to the configured grant.
24. The method of claim 17, wherein: The indication of the parameter set includes an index corresponding to the parameter set.
25. The method of claim 17, wherein: Each logical channel of the plurality of logical channels is configured with a maximum set of parameters allowed by the respective logical channel and the maximum uplink transmission duration.
26. The method of claim 17, wherein: Based on the uplink transmission parameters and the logical channel priorities of the plurality of logical channels, assigning the resources allocated by the uplink grant to the logical channels comprises: selecting a set of logical channels from among the plurality of logical channels in response to a maximum parameter set for each logical channel from among the set of logical channels being less than or equal to the parameter set and a maximum uplink transmission duration for each logical channel from among the set of logical channels being greater than or equal to the uplink transmission duration; and Resources are assigned to logical channels in the set of logical channels based on a logical channel priority of each logical channel in the set of logical channels.
27. The method of claim 17, further comprising: Scheduling request resources are selected for transmission, wherein the scheduling request resources correspond to a parameter set requested for uplink transmission.
28. The method according to claim 27, wherein: Selecting the scheduling request resource comprises selecting the scheduling request resource according to a first set of parameters of a set of configured parameter sets for a logical channel of a plurality of logical channels for which a buffer status report is triggered due to data becoming available for transmission.
29. The method of claim 17, further comprising: A plurality of uplink grants are received, and an order for processing the plurality of uplink grants is determined based on a number of logical channels of the plurality of logical channels configured with parameter sets corresponding to respective ones of the plurality of uplink grants.
30. The method of claim 17, further comprising: A plurality of uplink grants are received, and an order for processing the plurality of uplink grants is determined based on a predefined parameter set priority order.
31. The method of claim 17, further comprising: A plurality of uplink grants are received, and an order for processing the plurality of uplink grants is determined based on a predefined order, a signaled order, or some combination thereof.
32. The method of claim 17, wherein: A medium access control control element is transmittable on the uplink grant for any parameter set and any uplink transmission duration.
Citation Information
Patent Citations
Determining a priority order based on uplink transmission parameters
CN110574325A