CN116235615A - Configurable uplink transmission in a wireless communication system - Google Patents

Abstract

A method of transmitting data from a user equipment in a cellular communication system, a fixed period of transmission resources being configured without boundaries that would not identify HARQ IDs across hybrid automatic repeat request.

Description

Configurable uplink transmission in a wireless communication system

Technical Field

The present disclosure relates to configurable uplink communications in a wireless communication system, and in particular to a generic semi-static resource allocation scheme.

Background

Wireless communication systems, such as third generation (3G) mobile telephone standards and technologies, are well known. Such 3G standards and technologies were developed by the third generation partnership project (3 GPP) (RTM). Third generation wireless communications are commonly used to support macrocell mobile telephone communications. Communication systems and networks have evolved to broadband and mobile systems.

In a cellular wireless communication system, user Equipment (UE) is connected to a Radio Access Network (RAN) through a wireless link. The RAN includes a set of base stations that provide radio links to UEs in a cell covered by the base stations, and also provides an interface to a Core Network (CN) for overall network control. Notably, the RAN and CN each perform a respective function related to the overall network. For convenience, the term cellular network is used to refer to a combination of RAN and CN, it being understood that the term is used to refer to the corresponding system for performing the disclosed functions.

The third generation partnership project has developed a so-called Long Term Evolution (LTE) system, i.e. an evolved universal mobile telecommunications system area radio access network (E-UTRAN) for mobile access networks, wherein one or more macro cells are supported by base stations called enodebs or enbs (evolved nodebs). Recently, LTE is further evolving towards 5G or New Radio (NR) systems, where one or more cells are supported by base stations called gnbs. NR recommends the use of Orthogonal Frequency Division Multiplexing (OFDM) physical transport formats.

The NR protocol is intended to provide the option of operating in the unlicensed radio frequency range (referred to as NR-U). While operating in the unlicensed radio frequency band, the gNB and UE must compete with other devices for physical medium/resource access while operating in the unlicensed radio frequency band. For example, wi-Fi (RTM), NR-U, and LAA may use the same physical resources.

The trend in wireless communication is to provide lower latency and higher reliability services. For example, NR is intended to support ultra-reliable and low-latency communications (URLLC), while large-scale machine type communications (mctc) is intended to provide low latency and high reliability for small data packets (typically 32 bytes in size), with a user plane latency of 1ms, reliability of 99.99999%, and a packet loss rate of 10 for the physical layer ^-5 Or 10 ^-6 。

The mctc service aims to support a large number of devices over a long lifecycle through an energy efficient communication channel, where data transmission with each device is occasional and infrequent. For example, one unit may need to support thousands of devices.

The following disclosure relates to various improvements to cellular wireless communication systems.

Disclosure of Invention

This abstract presents the concepts of the disclosure in a simplified form as will be further described in the detailed description that follows. This abstract is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

The present disclosure provides a method of transmitting data from a user equipment, UE, in a cellular communication system, the method comprising the steps of: configuring authorized transmission resources for transmissions from a UE, wherein the configured authorized transmission resources comprise a plurality of transmission resources at a plurality of times, each transmission resource having a fixed period and no boundary that does not identify HARQ IDs across hybrid automatic repeat request, and transmitting data using the configured authorized transmission resources.

Wherein each time instance contains the same frequency resource.

Wherein the frequency resources at each instant of time vary according to a predefined frequency hopping pattern.

Wherein the frequency hopping pattern is defined by a frequency offset value between each time instant.

Wherein the configuring step includes enabling a frequency hopping mode.

Wherein the initial transmission of the data is started when the first available time after the data is ready for transmission.

Wherein, after the initial transmission, the data is continuously transmitted in a set of consecutive times in accordance with a configured number of repeated transmissions.

Wherein the HARQ process ID and/or redundancy version RV for transmission is selected according to a higher layer configuration.

Wherein each transmission includes an associated transmission parameter as part of the UCI message.

The present disclosure also provides a user equipment configured to perform the foregoing method.

Drawings

Further details, aspects and embodiments of the invention will be described, by way of example only, with reference to the accompanying drawings. The components in the figures are for ease of illustration and are not necessarily drawn to scale. For ease of understanding, like components are given like reference numerals throughout the various figures.

Fig. 1 shows a schematic diagram of selected elements of a cellular communication network.

Fig. 2-7 illustrate time slots configured for use in the cellular communication network of fig. 1.

Detailed Description

Those skilled in the art will recognize and appreciate that the specific details of the examples described are merely illustrative of some embodiments and that the teachings set forth herein are applicable in a variety of alternative settings.

Fig. 1 shows a schematic diagram of three base stations (e.g., enbs or gnbs, depending on the particular cellular standard and terminology) that make up a cellular network. Typically, each base station is deployed by one cellular network operator to provide geographic coverage for UEs in the area. The base stations form a Radio Area Network (RAN). Each base station provides wireless network coverage for UEs in its area or cell. The base stations are interconnected through an X2 interface and connected with a core network through an S1 interface. To illustrate key features of a cellular network, only basic details are shown here. For Side Link (SL) communication between UEs via a PC5 interface. The interface and component names associated with fig. 1 are for example only, and different systems operating on the same principles may use different nomenclature.

Each base station contains hardware and software that implements RAN functionality, including communications with the core network and other base stations, control and data signaling between the core network and UEs, and UEs associated with each base station remain in wireless communication. The core network includes hardware and software that implements network functions such as overall network management and control, and routing of calls and data.

The 3GPP technical standard 38.802 defines the URLLC service requirement and defines reliability as the probability of success R for transmitting X characters in L seconds, where L is the time required to transfer a small data packet from the ingress point of a radio protocol layer 2/3SDU to the egress point of the radio protocol layer 2/3SDU of the radio at a certain channel quality Q. The range of impact delays L includes transmission delays, processing delays, retransmission delays (if any) and queuing/scheduling delays, including scheduling requests and grant reception (if any). Any system that attempts to achieve reliability goals should also take into account spectral efficiency.

In an attempt to meet URLLC requirements, four aspects need to be considered. The first aspect relates to the use of larger subcarrier spacing (SCS). The LTE standard defines a sub-carrier spacing of 15KHz, resulting in a sub-frame of 1 millisecond, while NR allows the use of sub-carrier spacing up to 240KHz, which results in extremely short symbol and slot timing. Since scheduling decisions are typically made in units of time slots, the network becomes very sensitive to Uplink (UL) and Downlink (DL) traffic demands of users and the response time to accommodate Uplink and Downlink traffic can be very short compared to LTE and LTE-Advanced.

The second aspect relates to micro-slot based transmission, which 3GPP has agreed to make in UL and DL directions. The UE may therefore be arranged to transmit at small intervals, as small as 1 symbol.

A third aspect relates to periodicity of control information sent from the network to the UE. In LTE and LTE-Advanced, control information is located only at the beginning of a 1 millisecond-sized subframe, while NR allows for various configurations and periods of resources carrying control information in the downlink. Such resources carrying control information are referred to as control source groups CORESET (COntrol REsource SET). This allows the NR network to send control information at a specific sub-slot granularity, the slots can be made shorter due to the larger sub-carrier spacing.

A fourth aspect relates to standardized transmission of a configured grant CG (CG) UL, allowing a UE to transmit data in the UL direction without having to make an explicit scheduling request each time before transmission. Since the granted UL transmission is a standard mode of UL communication (also called dynamic grant, DG), where a scheduling request (Scheduling Request, SR) is sent in the UL direction when the UE needs data sent in the UL direction. The base station replies with a grant of UL grant and allocates resources and parameters for UL transmission. After decoding the UL grant, the UE transmits UL data according to the scheduling and control information received in the UL grant.

Configuration Grant UL transmissions, also known as Grant-Free (GF), allow the gNB to configure a set of resources for one or more users. This configuration allows the UE to transmit its UL data on the configured periodic resources without sending a scheduling request and waiting to schedule in the UL direction after passing the UL grant. High priority UEs, such as URLLC UEs with priority traffic or enhanced mobile broadband (eMBB) UEs, may be configured using such configuration grant UL transmissions.

Support for multiple CG configurations actively provided by a given UE has been standardized to accommodate rapid transmission of data packets, although these data packets arrive randomly from higher layers. Multiple configurations are simultaneously deactivated or released by Downlink Control Information (DCI) transmitted by the PDCCH to include signaling overhead.

Multiple PUCCH transmissions within a single slot allow for faster handshaking and retransmission opportunities, thus achieving higher QoS requirements.

In URLLC, a given transmission (original transmission or repetition) is associated with an interval, so this parameter is implicitly determined on both UE and gNB.

The transmission of the configuration grant uplink control information CG-UCI (CG Uplink Control Information) is standardized. Each CG-UCI contains a hybrid automatic repeat request (Hybrid Automatic Repeat request, HARQ) Identity (ID), RV, NDI, and channel access priority. CG-UCI is multiplexed with each CG-PUSCH transmission.

In CG transmission, the UE may configure RRC parameter repK to set up the repeated transmission K times. For any K repeated RV sequences, the repeated transmissions will terminate upon triggering by the first initiator in the following condition: the repeated transmissions have been made K times, or the last transmission instant (transmission occasion) is encountered during K repeated transmissions in period P, or when the starting symbols of the repeated transmissions overlap each other, wherein the starting symbols of the repeated transmissions are transmitted on PUSCH having the same HARQ process under DCI format 0_0, 0_1 or 0_2 schedule.

Due to the channel uncertainty of the unlicensed spectrum, the HARQ feedback sent by the gNB in response to the UL transmission is transmitted over the Physical Downlink Control Channel (PDCCH) as downlink feedback information (Downlink feedback information, DFI). If the UE receives a DFI flag of DCI format 0_1 set to "1" and the UE detects ACK information for the HARQ process of the corresponding Transport Block (TB) in this DCI, the UE will terminate the repeated transmission of this Transport block over PUSCH. If the UE receives ACK information of a given HARQ process in the CG-DFI transmitted through the PDCCH at the end of symbol i, to stop a transport block having the same HARQ process on the given serving cell and repeatedly transmitted through the PUSCH after the symbol i, if the interval between the end of the PDCCH and the start of symbol j at the PUSCH is equal to or greater than N2 symbols, the UE stops repeatedly transmitting the TB through the PUSCH from the start of symbol j at this time, where the N2 value may be determined according to the UE processing capability. The UE shall assume that there is a DFI when configuring CG, where the DFI contains a 1-bit flag to distinguish between DCI and DFI, UL/DL flag, HARQ bitmap, TPC commands for activating/deactivating CG transmission. The RRC parameter configures a minimum duration D from the end of the PUSCH symbol to the DFI start symbol carrying the PUSCH feedback.

Described herein is a generic and highly flexible configuration-authorized uplink transmission scheme. In this scheme, a transmission resource refers to a transmission resource having a given period and reused on the same frequency resource. The transmission parameters (e.g., HARQ process ID or redundancy version (Redundance version, RV)) are independent of the periodicity of any resource.

When the UE is to perform multiple repeated transmissions, the transmission is repeated periodically after the original transmission, thereby achieving a given transmission reliability within the required delay budget without increasing the overhead of multiple already configured grant configurations. The UE may begin transmitting data packets in the first resource after the minimum processing time required to process the data packets.

The apparatus, systems, and methods described herein may be used to transport traffic for data flows according to a plurality of different QoS requirements. Thus, the configured generic resources allow for efficient processing of various data streams with minimal control overhead. This also improves spectral efficiency. This provides a unified approach to licensed and unlicensed spectrum. In addition, frequency hopping can be introduced for periodic resources, and high reliability can be realized by utilizing frequency diversity.

The transmission of data packets by CG scheme based on standard URLLC is shown in fig. 2, the time-frequency resources in each period P being represented by a dashed rectangle. Each period P is mapped to a HARQ ID by deterministic known mapping, so the HARQ ID of the TB is determined by the HARQ ID of the period P in which the TB is transmitted. This puts a serious limitation on PUSCH repeated transmissions.

To avoid the gNB from being confused by the HARQ ID between repeated transmissions, one TB would have to cross CG cycle boundaries to prevent random packet arrival times from requiring significant configuration and resulting in significant signaling overhead. For high reliability traffic, which may require 8 or even 16 repetitions, the current standard may require a large number of CG configurations, resulting in a large amount of configuration and signaling overhead being required for activating and deactivating such configurations.

The number of repetitions of the transmission may be insufficient for proper decoding, as the data packet may not reach the physical layer for transmission aligned with the periodic boundaries of the configured grant transmission. Fig. 2 illustrates configuring time-frequency resources accessible by a UE, wherein the dashed box represents the time-frequency resources. As shown in fig. 2, the first packet arrives from the physical layer for a time sufficient for 4 repeated transmissions depending on its configuration. On the other hand, the second data packet and the third data packet can be transmitted only 3 times and 2 times repeatedly, respectively. As shown in fig. 2, the UE can perform 3 repeated transmissions for the second data packet. When the third packet arrives, 2 repeated transmissions may be performed during the current time period. This may not provide target reliability for the transmission and degrade the quality of service. Although not shown in fig. 2, the UE may decide not to transmit the third packet during the arrival, but rather store it in the buffer and perform 4 repeated transmissions in the next period. While this appears to provide good reliability, a disadvantage of this waiting is that it adds delay, even if the packet is successfully decoded, the packet may become useless in the destination terminal due to the delay.

If the UE waits for a complete 4 retransmissions for a subsequent CG period, there is a risk of violating the delay budget, although decoding may eventually succeed.

When transmission resources configured for CG transmissions are not available, e.g., due to the shared nature of unlicensed spectrum, a subset of the available resources may not be fully utilized due to the TB being restricted to within the period boundaries. This also requires multiple CG configurations to perform the appropriate number of repeated transmissions, wasting resources.

The grant NR-U is configured with CG-UCI to avoid confusion between UEs and base stations due to channel uncertainties. In the supported grant URLLC CG, control parameters need to be explicitly indicated to the licensed operator in order to be able to identify transmission parameters such as HARQ ID and RV.

The configuration authorization scheme described herein provides a flexible framework that allows accommodating multiple data streams with different retransmission requirements.

In the configuration grant scheme shown in fig. 3, the time-frequency resources are represented by dotted rectangles in each period P. The period is independent of the transport block but is associated with a repetition of resources. The UE sets 4 times of repeated transmission according to the UL CG configuration, starts to perform the first transmission at the first available time after the minimum processing time after the data packet reaches the physical layer, and performs the transmission in the subsequent resources according to the configured repeated times. Crossing the cycle boundary means that the UE does not need to buffer the packet before it arrives as in the conventional scheme to wait for the next appropriate interval, and the explicit indication by CG-UCI allows the base station to avoid confusion about the HARQ process of the transmission and other relevant transmission parameters.

The HARQ ID has no fixed mapping relation associated with the resource period P. The UE needs to determine the HARQ ID of a TB when it is ready to transmit and this HARQ ID is used for all repeated transmissions of the TB at different times. For example, the UE is configured to make 4 repetition transmissions and determine the HARQ ID at the start of the transmission, and then use it for 4 repetitions in 4 different periods. The HARQ ID is multiplexed to the gNB through CG UCI every time it is repeatedly transmitted through PUSCH so that the gNB can appropriately combine for TB decoding. In addition to the HARQ ID, CG-UCI contains RV and new data indicator (New data indicator, NDI) corresponding to repeated transmission of each PUSCH. Therefore, transmission parameters such as HARQ ID and RV are not associated with a period, but are selected according to a higher layer configuration, and are always transmitted and multiplexed through PUSCH being used for transmission.

The conventional configured authorization scheme adaptively handles unexpected packet arrivals by having multiple configurations (e.g., 4 CG configurations are shown in fig. 4). These configurations have staggered start times and the UE will select the configuration that is closest to the packet arrival time and has a sufficient number of repetitions. The UE can repeat transmission 4 times for each of the three data packets shown in fig. 4 by selecting a different configuration for each data packet. Due to the large number of repetitions, more CG configurations may be required, resulting in greater control overhead and configuration delays.

The scheme of the embodiment of the present application is not limited in this way, but rather allows packets of URLLC traffic to have random arrival times. The UE starts transmitting the data packet at the closest interval after processing by the physical layer (PHY), and then repeatedly transmits the data packet using the subsequent available resources according to the set number of repetitions configured. Fig. 5 shows a schematic diagram of the same repeated transmission behavior of the same data packet transmitted by the method shown in fig. 4 by the gNB according to the scheme proposed in the present application, where the scheme proposed in the present application can process the arrival time of three arbitrary data packets with only a single configuration. The UE starts transmitting the data packet at the first available time and continues repeating the transmission in the subsequent resources until the configured number of repetitions is met. This minimizes delay without affecting the reliability of such transmissions. Furthermore, the configuration is very simple with minimal overhead.

The apparatus, systems, and methods described herein may have two configuration modes: the CG type 1 and CG type 2 transmission configurations described in the standard are complied with. The type 1 CG transmission configuration uses RRC configuration, while the type 2 CG transmission configuration requires control of transmission activation and deactivation in DCI-based dynamic signaling. The apparatus, systems, and methods described herein can overcome the problems caused by random packet arrival by setting multiple (delayed) CG configurations, thereby providing improved QoS and reducing signaling overhead.

A single resource configuration may accommodate different traffic with different numbers of retransmissions and may have a particular period on a particular single time-frequency resource. Fig. 6 shows that the UE needs two different configurations for two different repetition numbers corresponding to different QoS, and the two different repetition numbers may be set to two CG configurations, respectively, by applying the current method provided in the present application. Fig. 6 shows that Config1 with 2 retransmission times is provided and Config2 with 4 retransmission times is provided. Using multiple configurations may consume more resources. For higher QoS requirements, however, both configurations shown in fig. 6 may also require multiple interleaving configurations to handle random packet arrival and/or channel uncertainty.

Fig. 7 shows another embodiment of the present application. The method and the device utilize the corresponding relation between periodicity and single transmission resource, so that two service types can be processed by single configuration. The base station may require multiple repeat transmissions and associated RV patterns to be set as part of the CG configuration for dual flow configurations that occur due to the need to handle both services. Another way to achieve this is to configure a common CG periodic resource and make that resource available in two different PUSCH configurations with different transmission parameters (e.g. repetition times).

The base station may miss UE transmissions at a given CG time instant and thus use standardized DL feedback to correspond to handling UL CG transmissions. The apparatus, systems, and methods described herein may employ downlink feedback for licensed transmission with a generic configuration, even for licensed operators. To maintain flexibility, a generic CG configuration may include activating or deactivating related DL feedback. A more flexible solution is provided herein where the gNB can activate feedback as necessary depending on the particular traffic QoS, the nature of the communication medium and the cell dynamics.

For the universal CG scheme provided in the present application, the basic resource configuration may define a period between any two consecutive resources that is maintained at a set level, and the frequency resource hops from one resource to a subsequent resource. The frequency offset value that the UE uses to hop from one frequency resource to the next may be defined in the CG configuration and such a hopping CG transmission will be further frequency diverse to improve reliability. Multiple frequency hopping patterns can be defined to achieve higher frequency diversity. The frequency hopping indication at the time of activation may be part of the CG configuration. The CG configuration also provides the necessary parameters to calculate the offset of the frequency resource to change its position from one cycle to the next.

Although not shown in detail, any of the devices forming part of the network may comprise at least a processor, a storage unit and a communication interface, wherein the processor, the storage unit and the communication interface are configured to perform the methods of any aspect of the invention. Further options and selections are described below.

The signal processing functions of embodiments of the present invention, particularly the gNB and the UE, may be achieved using computer systems or architectures known to those skilled in the relevant art. The computer system may be a desktop, laptop or notebook computer, handheld computing device (PDA, cell phone, palmtop, etc.), server, client, or any other type of general purpose computing device that may be used as desired for a given application or environment. The computer system may include one or more processors, which may be implemented using a general-purpose or special-purpose processing engine, such as a microprocessor, microcontroller, or other control module.

The computer system may also include a main memory, such as a Random Access Memory (RAM) or other dynamic memory, for storing information and instructions that may be executed by the processor. The main memory may also be used for storing temporary variables or other intermediate information during execution of instructions to be executed by the processor. The computer system may also include a Read Only Memory (ROM) or other static storage device for storing static information and instructions for the processor.

The computer system may also include an information storage system, which may include a media drive and a removable storage interface. The media drive may include a drive or other mechanism to secure or support a removable storage medium, such as a hard disk drive, a floppy disk drive, a magnetic tape drive, an optical disk drive, a Compact Disk (CD) or Digital Video Drive (DVD) (RTM) read or write drive (including a writeable or erasable drive), or other removable or fixed media drive. Storage media may include, for example, hard disk, floppy disk, magnetic tape, optical disk, CD or DVD, or other fixed or removable medium that is read by and written to by a media drive. The storage medium may include a computer-readable storage medium having stored therein specific computer software or data.

In alternative embodiments, the information storage system may include other similar components for allowing computer programs or other instructions or data to be loaded into the computer system. Such components may include, for example, removable storage units and interfaces such as program cartridge and cartridge interfaces, removable memory (e.g., flash memory or other removable memory modules) and memory slots, and other removable storage units and interfaces that allow software and data to be transferred from the removable storage units to the computer system.

The computer system may also include a communication interface. Such a communication interface may be used to allow software and data to be transferred between a computer system and an external device. Examples of communication interfaces may include modems, network interfaces (e.g., ethernet or other NIC cards), communication ports (e.g., universal Serial Bus (USB) ports), PCMCIA slots and cards, etc. Software and data transferred via the communications interface are in the form of signals which may be electronic, electromagnetic and optical or other signals capable of being received by the communications interface medium.

In this document, the terms "computer program product," "computer-readable medium," and the like may be used to generally refer to tangible media, such as memory, memory devices, or storage units. These and other forms of computer-readable media may store one or more instructions for use by a processor, including a computer system, to cause the processor to perform specified operations. Such instructions are often referred to as "computer program code" (which may be grouped in the form of computer programs or other groupings). When executed, the computer system is capable of performing the functions of embodiments of the present invention. Note that the code may directly cause the processor to perform the specified operations, be compiled to do so, and/or be combined with other software, hardware, and/or firmware elements (e.g., libraries for performing standard functions) to do so.

The non-transitory computer readable medium may include at least one of: hard disks, CD-ROMs, optical storage devices, magnetic storage devices, read-only memory, programmable read-only memory, erasable programmable read-only memory, EPROM, electrically erasable programmable read-only memory, and flash memory. In embodiments where the components are implemented using software, the software may be stored in a computer readable medium and loaded into a computer system using, for example, a removable storage drive. The control module (in this example, software instructions or executable computer program code) when executed by a processor in a computer system causes the processor to perform the functions of the invention as described herein.

Furthermore, the inventive concept may be applied to any circuit for performing signal processing functions within a network component. It is further contemplated that, for example, a semiconductor manufacturer may employ the inventive concepts in the design of a stand-alone device, such as a microcontroller of a Digital Signal Processor (DSP), or an Application Specific Integrated Circuit (ASIC) and/or any other subsystem element.

For clarity, the above description describes embodiments of the invention with reference to a single processing logic. However, the inventive concept may equally be implemented by a number of different functional units and processors to provide signal processing functionality. Thus, references to specific functional units are only to be seen as references to suitable means for providing the described functionality rather than indicative of a strict logical or physical structure or organization.

Aspects of the invention may be implemented in any suitable form including hardware, software, firmware or any combination of these. The invention may be implemented at least in part as computer software running on one or more data processors and/or digital signal processors or configurable module components such as FPGA devices.

Thus, the components and assemblies of embodiments of the invention can be physically, functionally and logically implemented in any suitable way. Indeed the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units. Although the present invention has been described in connection with some embodiments, it is not intended to be limited to the specific form set forth herein. Rather, the scope of the invention is limited only by the appended claims. Furthermore, although features appear to be described in connection with particular embodiments, those skilled in the art will recognize that various features of the described embodiments can be combined in accordance with the invention. In the claims, the term "comprising" does not exclude the presence of other elements or steps.

Furthermore, although individually listed, a plurality of means, elements or method steps may be implemented by e.g. a single unit or processor. Furthermore, although individual features may be included in different claims, these may possibly be advantageously combined, and the inclusion in different claims does not imply that a combination of features is not feasible and/or advantageous. Furthermore, the inclusion of a feature in one claim category does not imply a limitation to this category but rather indicates that the feature is equally applicable to other claim categories as appropriate.

Furthermore, the order of features in the claims does not imply any specific order in which the features must be worked and in particular the order of individual steps in a method claim does not imply that the steps must be performed in this order. Rather, the steps may be performed in any suitable order. Furthermore, singular references do not exclude a plurality. Thus, references to "a," "an," "the first," "the second," etc. do not exclude a plurality.

Although the present invention has been described in connection with some embodiments, it is not intended to be limited to the specific form set forth herein. Rather, the scope of the invention is limited only by the appended claims. Furthermore, although features appear to be described in connection with particular embodiments, those skilled in the art will recognize that various features of the described embodiments can be combined in accordance with the invention. In the claims, the term "comprising" or "comprises" does not exclude the presence of other elements.

Claims (11)

1. A method of transmitting data from a user equipment, UE, in a cellular communication system, the method comprising the steps of:

configuring authorized transmission resources for transmissions from a UE, wherein the configured authorized transmission resources comprise a plurality of transmission resources at a plurality of times, each transmission resource having a fixed period and no boundary that would not identify a HARQ ID across a hybrid automatic repeat request; a kind of electronic device with high-pressure air-conditioning system

And authorizing transmission resources to transmit data by utilizing the configuration.

2. The method of claim 1, wherein each time instant comprises the same frequency resource.

3. The method of claim 1, wherein the frequency resources at each instant of time vary according to a predefined frequency hopping pattern.

4. A method according to claim 3, characterized in that the frequency hopping pattern is defined by a frequency offset value between each time instant.

5. The method of claim 3 or 4, wherein the configuring step comprises enabling a frequency hopping mode.

6. The method of any of claims 1-5, wherein the initial transmission of the data is initiated when a first available time after the data is ready for transmission.

7. The method of claim 6, wherein the data is continuously transmitted in a set of consecutive time instants following the initial transmission in accordance with a configured number of repeated transmissions.

8. The method according to any of the claims 1-7, characterized in that the HARQID and/or redundancy version RV for transmission is selected according to a higher layer configuration.

9. The method of any of claims 1-8, wherein each transmission includes an associated transmission parameter as part of a UCI message.

10. The method according to claim 9, characterized in that the transmission parameters comprise the HARQ process ID and/or redundancy version RV.

11. A user equipment configured to perform the method of any of claims 1 to 10.

Images