Nominal repetition of data transmitted over unlicensed spectrum

Abstract

Some aspects of the present disclosure relate to an apparatus and method for implementing nominal repetitions of data transmitted over an unlicensed spectrum. One or more nominal repetitions of data are to be transmitted by a user equipment (UE) over an unlicensed spectrum for both uplink transmission and downlink transmission. The one or more nominal repetitions of the data are segmented into multiple actual repetitions of a portion of the data. The UE identifies an isolated symbol in an actual repetition of the multiple actual repetitions of the portion of the data, and determines a fill symbol to replace the isolated symbol in the actual repetition. In addition, the UE transmits the multiple actual repetitions including the fill symbol to replace the isolated symbol to a base station over the unlicensed spectrum.

Description

Background Art Technical Field

[0001] The described aspects generally relate to nominal repetition of data transmitted over unlicensed spectrum in wireless communications.

[0002] Related fields

[0003] The 3rd Generation Partnership Project (3GPP) is currently in the process of fully standardizing the New Radio (NR), Radio Access Technology (RAT) for the fifth generation (5G) system. 5G wireless communication systems and services can be classified into three categories: Ultra-Reliable Low Latency Communications (URLLC), Massive Machine Type Communications (mMTC), and Enhanced Mobile Broadband (eMBB). The design of URLLC is extremely challenging because URLLC adapts to emerging applications with strict latency and reliability requirements. To improve reliability, more resources are used for signaling and retransmission, such as nominal repeated transmission of data. In addition, to address the rapid growth in wireless data traffic demand, the wireless industry has turned its attention to unlicensed spectrum as a way to aggregate additional spectrum bands and increase the capacity of future cellular systems. New Radio-based access to unlicensed spectrum (NR-U) has many issues to be resolved, such as supporting URLLC in unlicensed spectrum. Summary of the invention

[0004] Some aspects of the present disclosure relate to apparatus and methods for implementing nominal repetition of transmitting data over unlicensed spectrum in wireless communications (e.g., wireless communications systems based on the Third Generation Partnership Project (3GPP) Release 15 (Rel-15), Release 16 (Rel-16), Release 17 (Rel-17), or higher). For example, systems and methods are provided to implement a design for nominal repetition of transmitting data to provide ultra-reliable low-latency communication (URLLC) services in New Radio (NR)-based access (NR-U) to unlicensed spectrum in a time division duplex (TDD) system.

[0005] In some examples, the unlicensed spectrum is shared among multiple UEs, and each UE performs a listen-before-talk (LBT) procedure to access the unlicensed spectrum. In some examples, the unlicensed spectrum is an independent new radio (NR) unlicensed spectrum supporting shared ultra-reliable low latency communication (URLLC) with synchronized frame-based equipment (FBE) in a controlled environment.

[0006] In some examples, a time slot includes a plurality of symbols, wherein each symbol of the time slot has a direction defined as an UL symbol for uplink (UL) transmission, a DL symbol for downlink (DL) transmission, or a flexible symbol for UL transmission or DL ​​transmission. The direction of the symbol in the time slot is defined by a subframe indicator (SFI) or by an invalid symbol pattern. An isolated symbol within a time slot is determined by a boundary of the time slot or a switching point of a DL transmission symbol immediately adjacent to the SFI defined within the time slot. In some examples, the SFI has a semi-static configuration or a dynamic configuration. Similarly, an invalid symbol pattern is a semi-static configuration or a semi-static configuration indicated by dynamic signaling, wherein symbols from a bitmap of an invalid symbol pattern marked with "1" are defined as symbols that cannot be used for UL transmission.

[0007] Some aspects of the present disclosure relate to a user equipment (UE). The UE includes: a transceiver configured to communicate with a base station via a wireless network; and a processor communicatively coupled to the transceiver. The processor uses the transceiver and receives downlink information including an UL transmission configuration from the base station. The UE also transmits data to the base station via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and DL transmission. In addition, the processor generates multiple actual repetitions of a portion of the data to be transmitted via the unlicensed spectrum. The multiple actual repetitions of the portion of the data form one or more nominal repetitions of the data, wherein the one or more nominal repetitions of the data are determined at least in part based on the UL transmission configuration received from the base station. The UL transmission configuration may include a nominal repetition configuration. The one or more nominal repetitions of the data are segmented into the multiple actual repetitions, wherein one actual repetition carries a portion of the data. The processor also identifies an isolated symbol of the actual repetition in the multiple actual repetitions. Thereafter, the processor determines a fill symbol to replace the isolated symbol of the actual repetition, and uses the transceiver to transmit the multiple actual repetitions including the fill symbol to replace the isolated symbol to the base station via the unlicensed spectrum.

[0008] In some examples, the UL transmission configuration is based at least in part on radio resource control (RRC) signaling, at least in part on activation of downlink control information (DCI), or at least in part on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE. In addition, the transmission of the one or more nominal repetitions of data from the UE is a physical uplink shared channel (PUSCH) repetition type B transmission of data. The actual repetition may be a PUSCH repetition type B transmission in a time division duplex (TDD) NR communication system. In some examples, a PUSCH repetition type B transmission in a time division duplex (TDD) NR communication system is used as an example of an actual repetition.

[0009] In some examples, the fill symbol may be selected from: the last symbol of the previous actual repetition of data before the actual repetition, the first symbol of the next actual repetition of data after the actual repetition, a cyclic prefix symbol, or a symbol determined by the UE. In addition, the fill symbol may be transmitted at the same frequency position as the frequency position for the last symbol of the previous actual repetition or the frequency position for the first symbol of the next actual repetition. In addition, the fill symbol is transmitted with the same transmission power as the transmission power for the last symbol of the previous actual repetition or the transmission power for the first symbol of the next actual repetition.

[0010] Some aspects of the present disclosure relate to a method. The method includes transmitting data to a base station via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and DL transmission. The method also includes generating multiple actual repetitions of a portion of the data to be transmitted via the unlicensed spectrum, wherein the multiple actual repetitions of the portion of the data form one or more nominal repetitions of the data. In addition, the method includes identifying isolated symbols of actual repetitions in the multiple actual repetitions, and determining fill symbols to replace the isolated symbols of the actual repetitions. Thereafter, the method includes transmitting the multiple actual repetitions including the fill symbols to replace the isolated symbols from the UE to the base station via the unlicensed spectrum.

[0011] Some aspects of the present disclosure relate to a non-transitory computer-readable medium storing instructions. When these instructions are executed by a processor of a UE, these instructions cause the processor to perform operations, which include: receiving a downlink message including an uplink (UL) transmission configuration by the UE and from a base station to transmit one or more nominal repetitions of data from the UE to the UL. These operations also include: transmitting data to the base station by the UE via an unlicensed spectrum. The unlicensed spectrum is used for both UL transmission and DL transmission. These operations also include generating multiple actual repetitions of a portion of the data to be transmitted via the unlicensed spectrum, wherein the multiple actual repetitions of the portion of the data form the one or more nominal repetitions of the data. In addition, these operations include identifying isolated symbols of actual repetitions in the multiple actual repetitions, and determining fill symbols that replace the isolated symbols of the actual repetitions. Thereafter, the operation includes transmitting the multiple actual repetitions including fill symbols that replace the isolated symbols to the base station by the UE via the unlicensed spectrum.

[0012] Some aspects of the present disclosure relate to a base station. The base station includes a transceiver configured to communicate with a UE via a wireless network and a processor communicatively coupled to the transceiver. The processor uses the transceiver and transmits a downlink message including an UL transmission configuration to the UE. For the UE, the UL transmission configuration transmits one or more nominal repetitions of data from the UE to the UL via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and DL transmission. The processor also receives an uplink message from the UE including actual repetitions containing fill symbols. The one or more nominal repetitions of the data are segmented into multiple actual repetitions, and the fill symbols are replacements for isolated symbols of the actual repetitions in the multiple actual repetitions.

[0013] The present invention is provided for the purpose of illustrating some aspects only, so as to provide an understanding of the subject matter described herein. Therefore, the above-mentioned features are only examples and should not be understood as narrowing the scope or essence of the subject matter in the present disclosure. Other features, aspects and advantages of the present disclosure will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0015] Figure 1 An example wireless system implementing a nominally repeated design for transmitting data over an unlicensed spectrum in accordance with some aspects of the present disclosure is shown.

[0016] Figure 2 Examples of nominal repetitions, actual repetitions, and isolated symbols are shown in accordance with some aspects of the present disclosure.

[0017] Figure 3 Examples of filler symbols replacing actual repeated orphan symbols are shown in accordance with some aspects of the present disclosure.

[0018] Figure 4 An example method for a system (eg, user equipment (UE)) supporting a designed mechanism for implementing nominal repetitions for transmitting data over unlicensed spectrum, in accordance with some aspects of the present disclosure, is shown.

[0019] Figure 5 An exemplary method for a system (eg, a base station) supporting a designed mechanism for implementing nominal repetitions for transmitting data over unlicensed spectrum is shown in accordance with some aspects of the present disclosure.

[0020] Figure 6A block diagram of an example system of electronic devices implementing a nominally repetitive design for transmitting data over an unlicensed spectrum in accordance with some aspects of the present disclosure is shown.

[0021] Figure 7 is an exemplary computer system for implementing some aspects or portions of the disclosure provided herein.

[0022] The present disclosure is described with reference to the accompanying drawings. In the drawings, generally, the same reference numerals indicate the same or functionally similar elements. Also, generally, the leftmost digit of a reference numeral identifies the drawing in which the reference numeral first appears. DETAILED DESCRIPTION

[0023] In a wireless communication system, a user equipment (UE) communicates with a base station (e.g., an evolved Node B (eNB), a next generation Node B (gNB), or other base stations) via a communication spectrum. In order to address the rapid growth in wireless data traffic demand in the coming years, the wireless industry has turned its attention to unlicensed spectrum as a way to aggregate additional spectrum bands and increase the capacity of future cellular systems. Unlicensed spectrum with global availability includes the 2.4 GHz, 5 GHz, and 60 GHz bands. Unlicensed spectrum can be used for uplink (UL) transmissions and downlink (DL) transmissions. In addition, the unlicensed spectrum can be shared between multiple UEs, and each UE performs a listen-before-talk (LBT) process to access the unlicensed spectrum.

[0024] The 3rd Generation Partnership Project (3GPP) is currently in the process of fully standardizing New Radio (NR), Radio Access Technology (RAT) for fifth generation (5G) systems, including Ultra Reliable Low Latency Communications (URLLC), Massive Machine Type Communications (mMTC), and Enhanced Mobile Broadband (eMBB). To address the stringent latency and reliability requirements of URLLC, more resources are used for signaling and retransmissions, e.g., nominally repeated transmissions of data. New Radio-based access to unlicensed spectrum (NR-U) has many issues to be addressed, such as supporting URLLC in unlicensed spectrum.

[0025] The technology for implementing URLLC service may include a small data payload (e.g., 32 bytes) with short delay. In addition, a mini-slot transmission time interval is used instead of a whole slot, so the data of the URLLC service can be transmitted immediately without waiting for the slot boundary. A mini-slot is a part of a slot and is the smallest scheduling unit in a wireless communication system.

[0026] A slot includes a plurality of symbols, wherein each symbol of the slot has a direction defined as an uplink (UL) symbol for an UL transmission, a downlink (DL) symbol for a DL transmission, or a flexible symbol for an UL transmission or a DL transmission. The direction of the symbol of the slot may be defined by a subframe indicator (SFI). In some examples, the SFI has a semi-static configuration or a dynamic configuration.

[0027] In some examples, one or more nominal repetitions of data are transmitted over unlicensed spectrum to improve reliability, for example, for URLLC services. The nominal repetition of transmitted data is the retransmission of the same data that has already been transmitted. In some examples, the nominal repetition of data is sent before receiving feedback or a request (e.g., a hybrid automatic repeat request (HARQ)) from a base station. When the size of the data is greater than one symbol, the nominal repetition of the data may be segmented into multiple actual repetitions by a slot boundary, a switching point within a slot immediately adjacent to a DL transmission symbol defined by an SFI, a so-called invalid symbol pattern, or by dynamic signaling optionally associated with an invalid symbol pattern indicating a reserved uplink symbol. In some examples, the actual repetition may be a single symbol, which may be referred to as an isolated symbol, while the nominal transmission containing the actual transmission is more than one symbol.

[0028] In some current systems, isolated symbols may be dropped or omitted in UL transmissions. Figure 2 Further discussed, isolated symbols are contained in actual repetitions with only one symbol. Discarding isolated symbols of actual repetitions may not cause problems in licensed spectrum. However, discarding isolated symbols of actual repetitions may be problematic in unlicensed spectrum or shared spectrum. Unlicensed spectrum or shared spectrum may be shared by multiple nodes including UEs and base stations operating in the networks of the same operator or different operators. When the first UE discards isolated symbols of actual repetitions, a gap in the time slot is created between originally continuous transmissions. If a second node (which may be a UE, a base station, or a node from other technologies, such as a WiFi station sharing an unlicensed spectrum) is performing an LBT process, the second node may incorrectly assume that the channel is available and start its transmission. Transmissions from the second UE at or shortly after the gap created by the discarded isolated symbol may cause a conflict with the transmission of the first UE that is resumed after the gap.

[0029] Some aspects of the present disclosure provide an improved solution for transmitting isolated symbols in actual repetitions. In detail, an apparatus and method for implementing nominal repetitions for transmitting data over an unlicensed spectrum are presented. Instead of discarding isolated symbols, filler symbols are included in the actual repetitions to eliminate potential gaps in the time slots. Therefore, a second UE listening to the shared unlicensed spectrum will not assume that the channel is available for transmission. Therefore, there is no collision between the first UE and the second UE at the isolated symbol.

[0030] In some examples, the fill symbol is selected from: the last symbol of the previous actual repetition of data before the actual repetition, the first symbol of the next actual repetition of data after the actual repetition, a cyclic prefix symbol, or a symbol determined by the UE. In addition, the fill symbol is transmitted at the same frequency position as the frequency position used for the last symbol of the previous actual repetition or the frequency position used for the first symbol of the next actual repetition. In addition, the fill symbol is transmitted with the same transmission power as the transmission power used for the last symbol of the previous actual repetition or the transmission power used for the first symbol of the next actual repetition.

[0031] In some examples, the unlicensed spectrum radio system is an independent NR unlicensed spectrum radio system that supports shared URLLC with synchronized frame-based equipment (FBE) in a controlled environment. In addition, other unlicensed spectrum radio systems from different operators may operate in the same geographic area, and some of them may also operate with NR systems with FBE-based sharing. Unlicensed spectrum radio networks from different operators may have different timing settings, such as in terms of the start time of a fixed frame period and the duration of a fixed frame period. In some other examples, the unlicensed spectrum may be an NR unlicensed spectrum that supports URLLC in an uncontrolled environment. Even if the techniques described herein are for, for example, unlicensed spectrum, these techniques may also be applicable to any other spectrum performed by multiple network nodes (e.g., UE, base station) operated by the same or different network operators.

[0032] Although some examples of content of nominal repetitions for transmitting data over unlicensed spectrum are provided above, aspects of the present disclosure are not limited to these examples, and nominal repetitions for transmitting data over unlicensed spectrum may include fewer, more, or other parameters, instructions, and / or information.

[0033] Figure 1 An exemplary wireless system 100 implementing a nominally repeated design for transmitting data over an unlicensed spectrum according to some aspects of the present disclosure is shown. The wireless system 100 is provided for illustration purposes only and is not intended to limit the disclosed aspects. The system 100 may include, but is not limited to, a network node (referred to herein as a base station) 101 and an electronic device (referred to hereinafter as a UE), such as UE 105 and UE 106.

[0034] According to some aspects, base station 101 may include a node configured to operate based on a variety of wireless communication technologies, such as but not limited to technologies based on 3GPP standards. For example, base station 101 may include a node configured to operate using Rel-16, Rel-17 or later versions, and may support URLLC services and applications. Base station 101 may be a fixed station and may also be referred to as a base transceiver system (BTS), access point (AP), access node (AN), transmission / reception point (TRP), evolved node B (eNB), next generation node B (gNB) or some other equivalent terms.

[0035] According to some aspects, UE 105 or UE 106 may include an electronic device configured to operate based on a variety of wireless communication technologies. These technologies may include, but are not limited to, technologies based on 3GPP standards. For example, UE 105 or UE 106 may include an electronic device configured to operate using Rel-16, Rel-17 or later versions, and may support URLLC services and applications. UE 105 or UE 106 may include, but are not limited to: wireless communication devices, smart phones, laptops, desktop computers, tablet computers, personal assistants, monitors, televisions, wearable devices, Internet of Things (IoT), communication devices of vehicles, mobile stations, subscriber stations, remote terminals, wireless terminals, user equipment, etc.

[0036] According to some aspects, UE 105 may include a transceiver configured to wirelessly communicate with base station 101 and a processor communicatively coupled to the transceiver, such as Figure 6 and Figure 7 UE 105 may be connected to base station 101 using one or more communication links (e.g., downlink 103 and uplink 107) and may communicate with the base station. Similarly, UE 106 may include a transceiver configured to wirelessly communicate with base station 101 and a processor communicatively coupled to the transceiver, such as Figure 6 and Figure 7 UE 106 may be connected to base station 101 and may communicate with the base station using one or more communication links (eg, downlink 113 and uplink 117).

[0037] According to some aspects, the downlink 103 and uplink 107 of UE 105 and the downlink 113 and uplink 117 of UE 106 may share the same unlicensed spectrum for both UL transmission and DL transmission. UE 105 and UE 106 perform a listen-before-talk (LBT) procedure before accessing the shared unlicensed spectrum to avoid conflicts with other UEs occupying the shared unlicensed spectrum. In some examples, the unlicensed spectrum is an independent NR unlicensed spectrum supporting shared URLLC with synchronization-based frame-based equipment (FBE) in a controlled environment 110. In the following, a functional description for UE 105 is provided as an example, and UE 106 may perform the same or similar functions.

[0038] According to some aspects, the base station 101 may use the UL transmission configuration 104 to configure the UE 105 to transmit one or more nominal repetitions of data from the UE to the base station 101. The UE 105 receives a downlink message 102 including the UL transmission configuration 104 from the base station 101. In some examples, the UL transmission configuration 104 is based at least in part on radio resource control (RRC) signaling, at least in part on activation of downlink control information (DCI), or at least in part on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE. In some examples, the UL transmission configuration 104 can be a type 1 configured grant, and only RRC signaling is used to configure the time domain resource allocation for the UE 105. In addition, the UL transmission configuration 104 can be a type 2 configured grant, and RRC signaling is used together with DCI activation to configure the time domain resource allocation for the UE 105. In addition, the RRC signaling together with the MAC CE signaling can be used to configure the time domain resource allocation for the UE 105. Additionally and optionally, RRC signaling together with MAC CE signaling and dynamic signaling from DCI activation may be used to configure time domain resource allocation for UE 105 .

[0039] According to some aspects, based on the UL transmission configuration 104, the UE 105 may transmit data 121 to the base station 101. In some examples, in a time division duplex (TDD) NR communication system, the UE 105 may transmit the data 121 to the base station 101 via an unlicensed spectrum. To improve the reliability of the transmission, the data 121 may be transmitted a plurality of times nominally repeatedly. In some examples, a nominal repetition 123 of the data 121 is generated and sent before receiving feedback or a request (e.g., a hybrid automatic repeat request (HARQ)) from the base station 101. The nominal repetition 123 of the data 121 may be segmented into a plurality of actual repetitions, such as an actual repetition 125 and an actual repetition 127. These actual repetitions are transmitted to the UL in different time slots.

[0040] Figure 21 shows examples of nominal repetitions, actual repetitions, and isolated symbols according to some aspects of the present disclosure. According to some aspects, for data 121, UE 105 generates one or more nominal repetitions to be transmitted over unlicensed spectrum, e.g. Figure 2 Shown are nominal repetition 207 and nominal repetition 209. The one or more nominal repetitions are segmented into multiple actual transmissions.

[0041] like Figure 2 As shown, time slot 201 or time slot 203 includes 14 symbols, where each symbol of the time slot has a direction defined as a UL symbol for uplink (UL) transmission, a DL symbol for downlink (DL) transmission, or a flexible symbol for UL transmission or DL ​​transmission. The direction (UL or DL ​​or flexible) of the symbol of the time slot is defined by SFI 205. In some examples, the SFI may have a semi-static configuration or a dynamic configuration. The SFI 205 shown is a semi-static SFI. According to SFI205, for time slot 201 or time slot 203, symbol 0 to symbol 2 are DL symbols, symbol 3 to symbol 10 are flexible symbols, and symbol 11 to symbol 13 are UL symbols.

[0042] In some examples, data 121 has 6 symbols, which have been transmitted before time slot 201. According to UL transmission configuration 104, two additional nominal repetitions of data 121 (e.g., nominal repetition 207 and nominal repetition 209) are scheduled for transmission to base station 101. Nominal repetition 207 is transmitted by actual repetition 211 during symbol 7 to symbol 12 of time slot 201, which is a UL symbol or a flexible symbol. Actual repetition 211 has the last symbol 221. Nominal repetition 209 is scheduled for transmission in consecutive time slots, and the nominal repetition should occupy symbol 13 of time slot 201 to symbol 4 of time slot 203. However, SFI 205 indicates that symbols 0 to 2 of time slot 203 are DL symbols and are not available for UL transmission. Therefore, symbols 0 to 2 of time slot 203 segment nominal repetition 209 into two actual repetitions, namely actual repetition 213 and actual repetition 215, which are not adjacent and separated by DL symbols 0-2. The actual repetition 213 contains only one symbol 223 to be transmitted at symbol 13 of the time slot 201. The actual repetition 215 contains 2 symbols of the nominal repetition 209, which has the first symbol 225.

[0043] Therefore, nominal repetition 207 and nominal repetition 209 are segmented into three actual repetitions, namely actual repetition 211, actual repetition 213, and actual repetition 215. Actual repetition 211 is the previous actual repetition of data 121 before actual repetition 213, and actual repetition 215 is the next actual repetition of data 121 after actual repetition 213.

[0044] According to some aspects, the UE 105 also identifies or determines isolated symbols that are actually repeated. Figure 2 As shown in more detail in FIG. 2 , the actual repetition 213 has only one symbol 223 that occupies only one symbol, which is determined by the boundary of the time slot 201. In contrast, the actual repetitions 211 and 215 each have multiple symbols. Additionally and optionally, the actual repetition 213 is determined by the switching point of the DL transmission symbol defined by the SFI 205 within the time slot, which is symbol 13 because it is adjacent to the DL symbol 0 of the time slot 203. Therefore, symbol 223 is an isolated symbol of the actual repetition 213. Therefore, in this article, the isolated symbol is contained in an actual repetition of the size of one symbol, wherein the actual repetition is part of the nominal repetition when the nominal repetition is segmented into multiple actual repetitions. The transmission of the nominal repetition of data is to resend the same data that has been transmitted for various purposes, such as to improve reliability. In some examples, the isolated symbol 223 can be a single symbol to be transmitted in a PUSCH repetition type B transmission according to the nominal repetition configuration, or a single UL symbol to be omitted from the transmission in a PUSCH repetition type B transmission. In some examples, the orphan symbol 223 is determined by an invalid symbol pattern. The invalid symbol pattern may be a semi-static configuration or a semi-static configuration indicated by dynamic signaling, and symbols from the bitmap of the invalid symbol pattern marked with "1" are defined as symbols that cannot be used for UL transmission.

[0045] Conventionally, isolated symbols 223 may be discarded or omitted in UL transmissions. However, discarding isolated symbols that are actually repeated may be problematic in unlicensed spectrum or shared spectrum. When UE 105 discards isolated symbols 223, a gap is created in time slot 201. A second node (e.g., UE 106) may be performing an LBT procedure and may incorrectly assume that the channel is available and begin its transmission. Transmissions at and after symbol 13 of time slot 201, which the discarded isolated symbol 223 from UE 106 assumes to occupy, may cause a collision with transmissions from UE 105 that resume after the gap.

[0046] According to some aspects, the UE 105 also determines filler symbols 333 to replace isolated symbols 223 of the actual repetition 213, such as Figure 3 As shown in more detail in FIG. Figure 3 Only shown Figure 2 Part of the details. Figure 3 , the filling symbol 333 may be the same symbol as the last symbol 221 of the previous actual repetition 211 before the actual repetition 213 of the data 121, or the first symbol 225 of the next actual repetition 215 after the actual repetition 213 of the data 121. In addition, the filling symbol 333 is generated at the same time position as the time position of the isolated symbol 223.

[0047] In some examples, when the last symbol 221 of the previous actual repetition 211 before the actual repetition 213 is also an isolated symbol, the padding symbol 333 may be based on the last symbol of the most recent PUSCH repetition type B transmission that has more than one symbol before the PUSCH repetition type B transmission. Similarly, when the first symbol 225 of the next actual repetition 215 after the actual repetition 213 is also an isolated symbol, the padding symbol 333 may be based on the first symbol of the earliest PUSCH repetition type B transmission that has more than one symbol after the PUSCH repetition type B transmission. In some examples, the padding symbol 333 may be a cyclic prefix symbol, or a symbol determined by the UE 105.

[0048] In addition, the padding symbol 333 may be transmitted at the same frequency position as the last symbol 221 of the previous actual repetition 211, the last symbol of the most recent PUSCH repetition type B transmission, the first symbol 225 of the next actual repetition 215, or the first symbol of the earliest PUSCH repetition type B transmission. In addition, the padding symbol 333 may be transmitted at the same transmission power as the repetition power of the last symbol 221 of the previous actual repetition 211, the last symbol of the most recent PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission, or the first symbol 225 of the next actual repetition 215.

[0049] Thereafter, UE 105 transmits the plurality of actual repetitions, e.g., actual repetition 211, actual repetition 213 including fill symbol 333 instead of isolated symbol 223, and actual repetition 215, to base station 101 through the unlicensed spectrum. Actual repetition 211, actual repetition 213, and actual repetition 215 together are equivalent to the transmission of nominal repetition 207 and nominal repetition 209. The transmission of the one or more nominal repetitions (e.g., nominal repetition 207 and nominal repetition 209) of data 121 is a physical uplink shared channel (PUSCH) repetition type B transmission of data.

[0050] Figure 4 An exemplary method 400 for a system (eg, a UE) supporting a mechanism for implementing a nominal repetition of a design for transmitting data over an unlicensed spectrum is shown in accordance with some aspects of the present disclosure. For convenience and not limitation, reference may be made to Figures 1 to 3 , Figure 6 and Figure 7 Description of the elements Figure 4 Method 400 may represent an electronic device (e.g., Figure 1The method 400 may also include: Figure 6 System 600 and / or Figure 7 The method 400 is performed by a computer system 700. However, the method 400 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and these operations may not be performed in the same manner as described above. Figure 4 The same sequence as shown is performed.

[0051] At 402, the UE receives a downlink message from a base station including an UL transmission configuration to transmit one or more nominal repetitions of data from the UE to the UL. For example, the UE 105 receives a downlink message 102 from the base station 101 including an UL transmission configuration 104 to transmit one or more nominal repetitions of data from the UE 105 to the UL, such as for Figure 1 described. In some examples, the UL transmission may be a PUSCH repetition type B transmission. The UL transmission configuration may be based at least in part on radio resource control (RRC) signaling, at least in part on activation of downlink control information (DCI), or at least in part on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE. When the UL transmission configuration is a type 1 configured grant, only RRC signaling is used to configure time domain resource allocation for the UE. Additionally and optionally, when the UL transmission configuration is a type 2 configured grant, RRC signaling is used together with DCI activation to configure time domain resource allocation for the UE. Similarly, RRC signaling together with MAC CE signaling may be used to configure time domain resource allocation for the UE, or RRC signaling together with MAC CE signaling and dynamic signaling from DCI activation may be used to configure time domain resource allocation for the UE.

[0052] At 404, the UE transmits data to the base station via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and DL transmission. For example, UE 105 transmits data 121 to base station 101 via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and DL transmission, as described for Figure 1 described.

[0053] At 406, the UE determines, based at least in part on the UL transmission configuration received from the base station, that the symbol is an isolated symbol of an actual repetition. The actual repetition is among a plurality of actual repetitions that form the one or more nominal repetitions configured by the UL transmission configuration. For example, Figure 2As shown, based on the UL transmission configuration 104 received from the base station 101, the UE 105 determines that the symbol 223 is an isolated symbol of the actual repetition 213. The actual repetition 213 is among a plurality of actual repetitions (e.g., actual repetition 211, actual repetition 213, and actual repetition 215) that form the nominal repetition 207 and the nominal repetition 209. The isolated symbol is included in an actual repetition of the size of one symbol, wherein when the nominal repetition is segmented into a plurality of actual repetitions, the actual repetition is a part of the nominal repetition. The transmission of the nominal repetition of data is to resend the same data that has already been transmitted for various purposes, such as to improve reliability. For example, the UE 105 identifies the isolated symbol 223 of the actual repetition 213, such as for Figure 2 described.

[0054] At 408, the UE determines a fill symbol to replace the determined isolated symbol in the actual repetition. For example, the UE 105 determines a fill symbol 333 to replace the isolated symbol 223 of the actual repetition 213, such as for Figure 3 described.

[0055] At 410, the UE transmits to the base station via the unlicensed spectrum an actual repetition of a fill symbol replacing an isolated symbol. For example, the UE 105 transmits to the base station 101 via the unlicensed spectrum an actual repetition 213 of a fill symbol 333 replacing an isolated symbol 223, as for Figure 1 The actual repetition 213 includes the filling symbol 333 instead of the isolated symbol 223.

[0056] Figure 5 An exemplary method 500 for a system (e.g., a base station) supporting a mechanism for implementing a nominal repetition of a design for transmitting data over an unlicensed spectrum is shown in accordance with some aspects of the present disclosure. For convenience and not limitation, reference may be made to Figures 1 to 3 , Figure 6 and Figure 7 Description of the elements Figure 5 Method 500 may represent an electronic device (e.g., Figure 1 The method 500 may also be performed by: Figure 6 System 600 and / or Figure 7 The method 500 is performed by a computer system 700. However, the method 500 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and these operations may not be performed in the same manner as described above. Figure 5 The same sequence as shown is performed.

[0057] At 502, the base station uses a transceiver and transmits a downlink message including an UL transmission configuration to the UE to transmit one or more nominal repetitions of data from the UE to the UL via an unlicensed spectrum for both UL transmission and DL transmission. For example, the base station 101 uses a transceiver and transmits a downlink message 102 including an UL transmission configuration 104 to the UE 105. The UL transmission configuration 104 is for the UE 105 to transmit nominal repetitions 207 and nominal repetitions 209 to the UL, as for Figure 1 to Figure 2 described.

[0058] At 504, the base station uses a transceiver to receive actual repetitions including filler symbols from the UE. The one or more nominal repetitions are segmented into multiple actual transmissions, for example, the filler symbols are replacements for isolated symbols of the actual repetitions of the multiple actual transmissions. For example, as for Figures 1 to 3 As described, base station 101 receives actual repetition 213 including padding symbol 333 from UE 105. Nominal repetition 207 and nominal repetition 209 are segmented into multiple actual transmissions, such as actual repetition 211, actual repetition 213, and actual repetition 215. Padding symbol 333 is a replacement for isolated symbol 223 of actual repetition 213.

[0059] Figure 6 A block diagram of an exemplary system 600 of an electronic device implementing a nominally repeated design for transmitting data over an unlicensed spectrum according to some aspects of the present disclosure is shown. System 600 can be any electronic device of system 100 (e.g., base station 101, UE 105). System 600 includes a processor 610, one or more transceivers 620, a communication infrastructure 640, a memory 650, an operating system 652, an application 654, and one or more antennas 660. The illustrated system is provided as an exemplary portion of system 600, and system 600 may include other circuits and subsystems. Moreover, although the system of system 600 is shown as a separate component, aspects of the present disclosure may include any combination of these components, fewer components, or more components.

[0060] The memory 650 may include random access memory (RAM) and / or cache, and may include control logic components (e.g., computer software) and / or data. The memory 650 may include other storage devices or memories, such as, but not limited to, a hard drive and / or a removable storage device / unit. According to some examples, an operating system 652 may be stored in the memory 650. The operating system 652 may manage data transmission from the memory 650 and / or one or more applications 654 to the processor 610 and / or one or more transceivers 620. In some examples, the operating system 652 supports one or more network protocol stacks (e.g., an Internet protocol stack and a cellular protocol stack, etc.) that may include several logical layers. At the corresponding layer of the protocol stack, the operating system 652 includes control mechanisms and data structures to perform functions associated with the layer.

[0061] According to some examples, applications 654 may be stored in memory 650. Applications 654 may include applications used by wireless system 600 and / or a user of wireless system 600 (e.g., user applications). Applications in applications 654 may include applications such as, but not limited to, Siri. TM , FaceTime TM , broadcast streaming, video streaming, remote control and / or other user applications.

[0062] The system 600 may also include a communication infrastructure 640. The communication infrastructure 640 provides, for example, communication between the processor 610, one or more transceivers 620, and the memory 650. In some implementations, the communication infrastructure 640 may be a bus. The processor 610, together with instructions stored in the memory 650, executes to enable the system 600 to implement the mechanism for transmitting nominal repetitions of data over unlicensed spectrum, as described herein with respect to Figures 1 to 3 The system 100 is shown.

[0063] One or more transceivers 620 transmit and receive communication signals that support a mechanism for nominal repetition of data transmitted over an unlicensed spectrum. According to some aspects, one or more transceivers 620 may be coupled to an antenna 660. Antenna 660 may include one or more antennas that may be the same or different types. One or more transceivers 620 allow the system 600 to communicate with other devices that may be wired and / or wireless. In some examples, one or more transceivers 620 may include circuits / devices such as processors, controllers, radio components, sockets, plugs, buffers, etc. for connecting to a network and communicating on the network. According to some examples, one or more transceivers 620 include one or more circuits that connect to and communicate on a wired and / or wireless network.

[0064] According to some aspects of the present disclosure, the one or more transceivers 620 may include a cellular subsystem, a WLAN subsystem, and / or a Bluetooth subsystem. TM Subsystems, each including its own radio transceiver and protocol, as will be understood by those skilled in the art based on the discussion provided herein. In some implementations, one or more transceivers 620 may include more or fewer systems for communicating with other devices.

[0065] In some examples, transceiver(s) 620 may include one or more circuits, including a WLAN transceiver, to enable connection and communication via a WLAN network, such as, but not limited to, a network based on the standards described in IEEE 802.11.

[0066] Additionally or alternatively, the one or more transceivers 620 may include one or more circuits (including Bluetooth TM transceiver) to implement Bluetooth-based TM Protocol, Bluetooth TM Low power protocol, or Bluetooth TM For example, one or more transceivers 620 may include Bluetooth TM Transceiver.

[0067] Additionally, the one or more transceivers 620 may include one or more circuits (including cellular transceivers) for connecting to and communicating on a cellular network. Cellular networks may include, but are not limited to, 3G / 4G / 5G networks such as Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), etc. For example, the one or more transceivers 220 may be configured to operate in accordance with one or more of Rel-15, Rel-16, Rel-17, or later versions of the 3GPP standard.

[0068] According to some aspects of the present disclosure, the processor 610 alone or in combination with computer instructions stored in the memory 650 and / or one or more transceivers 620 implements the methods and mechanisms discussed in the present disclosure. For example, the processor 610 alone or in combination with computer instructions stored in the memory 650 and / or one or more transceivers 620 implements a mechanism for nominal repetition of data transmitted over an unlicensed spectrum. According to some aspects of the present disclosure, the processor 610 alone or in combination with computer instructions stored in the memory 650 and / or one or more transceivers 620 may transmit data from a base station (e.g., Figure 1A base station 101 of the present invention receives a downlink message 102 including a UL transmission configuration 104 to transmit one or more nominal repetitions of data from a UE 105 to the UL. The processor 610 may transmit the data 121 to the base station 101 via the unlicensed spectrum. In addition, the processor 610 may generate one or more nominal repetitions of the data to be transmitted via the unlicensed spectrum, for example, the nominal repetition 207 and the nominal repetition 209. The nominal repetition 207 and the nominal repetition 209 are segmented into a plurality of actual repetitions, for example, the actual repetition 211, the actual repetition 213, and the actual repetition 215. The processor 610 may identify an isolated symbol 223 of the actual repetition 213, and determine a fill symbol 333 to replace the isolated symbol 223 of the actual repetition 203. The processor 610 may also transmit the actual repetition 211, the actual repetition 215, and the actual repetition 213 including the fill symbol 333 instead of the isolated symbol 223 to the base station 101 via the unlicensed spectrum.

[0069] For example, one or more computer systems such as Figure 7 The computer system 700 shown is used to implement various aspects. The computer system 700 can be any well-known computer capable of performing the functions described herein, such as Figure 1 Device 101, 105 or Figure 6 The computer system 700 includes one or more processors (also referred to as central processing units or CPUs), such as a processor 704. The processor 704 is connected to a communication infrastructure 706 (e.g., a bus). The computer system 700 also includes a user input / output device 703, such as a monitor, keyboard, pointing device, etc., which communicates with the communication infrastructure 706 through a user input / output interface 702. The computer system 700 also includes a main memory or primary storage 708, such as a random access memory (RAM). The main memory 708 may include one or more levels of cache. The main memory 708 has control logic components (e.g., computer software) and / or data stored therein.

[0070] The computer system 700 may also include one or more secondary storage devices or memories 710. The secondary storage 710 may include, for example, a hard disk drive 712 and / or a removable storage device or drive 714. The removable storage drive 714 may be a floppy disk drive, a tape drive, an optical drive, an optical storage device, a tape backup device, and / or any other storage device / drive.

[0071] The removable storage drive 714 may interact with a removable storage unit 718. The removable storage unit 718 includes a computer usable or readable storage device having computer software (control logic) and / or data stored thereon. The removable storage unit 718 may be a floppy disk, a magnetic tape, a compact disk, a DVD, an optical storage disk, and / or any other computer data storage device. The removable storage drive 714 reads from and / or writes to the removable storage unit 718 in a well-known manner.

[0072] According to some aspects, the secondary memory 710 may include other devices, tools, or other methods for allowing the computer system 700 to access computer programs and / or other instructions and / or data. Such devices, tools, or other methods may include, for example, a removable storage unit 722 and an interface 720. Examples of removable storage units 722 and interfaces 720 may include a program cartridge and cartridge interface (such as found in video game devices), a removable memory chip (such as an EPROM or PROM) and an associated socket, a memory stick and USB port, a memory card and an associated memory card slot, and / or any other removable storage unit and associated interface.

[0073] In some examples, the main memory 708, the removable storage unit 718, and the removable storage unit 722 may store instructions that, when executed by the processor 704, cause the processor 704 to perform operations for a UE (e.g., UE 105) or a base station (e.g., base station 101). In some examples, the operations include: receiving a downlink message including an UL transmission configuration from the base station 101 to transmit one or more nominal repetitions of data from the UE 105 to the UL; transmitting data to the base station via an unlicensed spectrum for both UL transmission and DL transmission; generating the one or more nominal repetitions of data to be transmitted via the unlicensed spectrum. The one or more nominal repetitions of the data are segmented into a plurality of actual repetitions. The operations also include: identifying isolated symbols of the actual repetitions of the generated nominal repetitions of the data; determining fill symbols to replace the isolated symbols of the actual repetitions; and transmitting the plurality of actual repetitions including fill symbols instead of isolated symbols to the base station via the unlicensed spectrum.

[0074] The computer system 700 may also include a communication or network interface 724. The communication interface 724 enables the computer system 700 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference numeral 728). For example, the communication interface 724 may allow the computer system 700 to communicate with the remote device 728 via a communication path 726, which may be wired and / or wireless and may include any combination of a LAN, a WAN, the Internet, etc. Control logic components and / or data may be transmitted to and from the computer system 700 via the communication path 726.

[0075] The operations in the foregoing aspects can be implemented in various configurations and architectures. Thus, some or all of the operations in the foregoing aspects may be performed in hardware, software, or in both hardware and software. In some aspects, a tangible, non-transient device or article includes a tangible, non-transient computer-usable or readable medium on which a control logic component (software) is stored, also referred to herein as a computer program product or program storage device. This includes, but is not limited to, a computer system 700, a main memory 708, an auxiliary memory 710, and removable storage units 718 and 722, as well as tangible articles embodying any combination of the foregoing. Such control logic components, when executed by one or more data processing devices (such as computer system 700), cause such data processing devices to operate as described herein.

[0076] Based on the teachings contained in this disclosure, it will be apparent to those skilled in the relevant art how to use the Figure 7 The various aspects of the present disclosure may be made and used with data processing devices, computer systems, and / or computer architectures other than those shown. In particular, the various aspects may operate with software, hardware, and / or operating system implementations other than those described herein.

[0077] It should be understood that the Detailed Description section, rather than the Summary and Abstract sections, is intended to be used to interpret the claims. The Summary and Abstract sections may set forth one or more but not all exemplary aspects of the present disclosure as contemplated by the inventors, and thus are not intended to limit the present disclosure or the appended claims in any way.

[0078] Although the present disclosure has been described herein with reference to exemplary aspects of exemplary fields and applications, it should be understood that the present disclosure is not limited thereto. Other aspects and modifications are possible and are within the scope and essence of the present disclosure. For example, and without limiting the generality of this paragraph, the various aspects are not limited to the software, hardware, firmware and / or entities shown in the figures and / or described herein. In addition, the various aspects (whether or not explicitly described herein) have significant practicality for fields and applications outside the examples described herein.

[0079] Various aspects have been described herein by means of functional building blocks that illustrate specific implementations of specific functions and relationships thereof. For ease of description, the boundaries of these functional building blocks have been arbitrarily defined herein. As long as the specified functions and relationships (or their equivalents) are properly performed, alternative boundaries may be defined. In addition, alternative aspects may perform functional blocks, steps, operations, methods, etc., in an order different from that described herein.

[0080] References herein to "one embodiment," "an embodiment," "an exemplary embodiment," or similar phrases indicate that the described embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the relevant art to incorporate such feature, structure, or characteristic into other aspects, whether or not explicitly mentioned or described herein.

[0081] The breadth and scope of the present disclosure should not be limited by any of the above-described exemplary aspects, but should be defined only in accordance with the following claims and their equivalents.

[0082] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0083] For one or more embodiments or examples, at least one of the components shown in one or more of the foregoing figures may be configured to perform one or more operations, techniques, processes and / or methods described in the following example section. For example, circuits associated with the UE, base station, network element, etc. described above in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples shown in the example section below.

[0084] Example

[0085] Embodiment 1 includes a user equipment (UE) comprising: a transceiver configured to wirelessly communicate with a base station; and a processor communicatively coupled to the transceiver and configured to: determine, at least in part based on a nominal repetition configuration received from the base station, that a symbol is an isolated symbol in a physical uplink shared channel (PUSCH) repetition type B transmission in a time division duplex (TDD) new radio (NR) communication system; determine a fill symbol to replace the determined isolated symbol in the PUSCH repetition type B transmission; and generate the PUSCH repetition type B transmission including the fill symbol.

[0086] Embodiment 2 includes a UE according to embodiment 1 and / or some other embodiment herein, wherein the nominal repetition configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

[0087] Embodiment 2 includes the UE according to embodiment 1 and / or some other embodiment of the present invention, wherein generating the PUSCH repetition type B transmission including the fill symbol is generating the PUSCH repetition type B transmission including the fill symbol at the same time position as the time position of the isolated symbol.

[0088] Embodiment 4 includes a UE according to embodiment 1 and / or some other embodiment of the present invention, wherein the processor is further configured to determine the padding symbol based on the last symbol of the most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE.

[0089] Embodiment 5 comprises the UE according to embodiment 4 and / or some other embodiment of the present invention, wherein the fill symbol is transmitted at the same frequency position as the frequency position of the last symbol used for the most recent PUSCH repetition type B transmission or the frequency position of the first symbol used for the earliest PUSCH repetition type B transmission.

[0090] Embodiment 6 includes a UE according to embodiment 4 and / or some other embodiment of the present invention, wherein the fill symbol is transmitted with the same transmission power as the transmission power of the last symbol used for the most recent PUSCH repetition type B transmission or the transmission power of the first symbol used for the earliest PUSCH repetition type B transmission.

[0091] Embodiment 7 includes a UE according to embodiment 1 and / or some other embodiment of the present invention, wherein determining that the symbol is the isolated symbol is determining that the symbol is a single symbol to be transmitted in the PUSCH repetition type B transmission according to the nominal repetition configuration, or a single UL symbol to be omitted from the transmission in the PUSCH repetition type B transmission.

[0092] Embodiment 8 includes a UE according to embodiment 1 and / or some other embodiment herein, wherein the isolated symbol is determined by a boundary of a time slot or a switching point within the time slot immediately adjacent to a downlink (DL) transmission defined by a subframe indicator (SFI) or by an invalid symbol pattern.

[0093] Embodiment 9 includes a UE according to embodiment 8 and / or some other embodiment herein, wherein the SFI is semi-statically configured or dynamically configured, and wherein the symbol of the time slot is defined as a UL symbol for UL transmission, a DL symbol for DL ​​transmission, or a flexible symbol for UL transmission or DL ​​transmission.

[0094] Embodiment 10 includes a UE according to embodiment 8 and / or some other embodiment of the present invention, wherein the invalid symbol pattern is a semi-static configuration or a semi-static configuration indicated by dynamic signaling, and wherein symbols from the bitmap of the invalid symbol pattern marked with "1" are defined as symbols that cannot be used for UL transmission.

[0095] Embodiment 11 includes a UE according to embodiment 1 and / or some other embodiment of the present invention, wherein the processor is further configured to transmit the PUSCH repetition type B transmission in an unlicensed spectrum, and wherein the unlicensed spectrum is an independent NR unlicensed spectrum supporting shared ultra-reliable low latency communication (URLLC) with synchronized frame-based equipment (FBE) in a controlled environment.

[0096] Embodiment 12 includes a method for a user equipment (UE), comprising: transmitting data to a base station via an unlicensed spectrum in a time division duplex (TDD) new radio (NR) communication system, wherein the unlicensed spectrum is used for both uplink (UL) transmission and downlink (DL) transmission; determining, based at least in part on a UL transmission configuration received from the base station, that a symbol is an isolated symbol in a physical uplink shared channel (PUSCH) repetition type B transmission; determining a fill symbol to replace the determined isolated symbol in the PUSCH repetition type B transmission; and generating the PUSCH repetition type B transmission including the fill symbol.

[0097] Embodiment 13 includes a method according to embodiment 12 or some other embodiment of the present invention, wherein the fill symbol is selected from: the last symbol of the most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE.

[0098] Embodiment 14 includes a method according to embodiment 13 and / or some other embodiment herein, wherein the fill symbol is transmitted at a frequency position that is the same as the frequency position of the last symbol used for the most recent PUSCH repetition type B transmission or the frequency position of the first symbol used for the earliest PUSCH repetition type B transmission.

[0099] Embodiment 15 includes a method according to embodiment 13 and / or some other embodiment herein, wherein the UL transmission configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

[0100] Embodiment 16 includes a method according to claim 15 and / or some other embodiment herein, wherein the UL transmission configuration is a type 1 configured authorization, and only the RRC signaling is used to configure the time domain resource allocation for the UE; wherein the UL transmission configuration is a type 2 configured authorization, and the RRC signaling is used together with the DCI activation to configure the time domain resource allocation for the UE; wherein the RRC signaling is used together with the MAC CE signaling to configure the time domain resource allocation for the UE; or wherein the RRC signaling is used together with the MAC CE signaling and dynamic signaling from the DCI activation to configure the time domain resource allocation for the UE.

[0101] Embodiment 17 includes a non-transitory computer-readable medium storing instructions, which, when executed by a processor of a user equipment (UE), causes the processor to perform operations, the operations including: receiving, by the UE and from a base station, a downlink message including an uplink (UL) transmission configuration to transmit one or more nominal repetitions from the UE to the UL; transmitting data by the UE to the base station via an unlicensed spectrum; determining, at least in part based on the UL transmission configuration received from the base station, that a symbol is an isolated symbol that is an actual repetition; determining a fill symbol to replace the determined isolated symbol in the actual repetition, wherein the actual repetition is among a plurality of actual repetitions that form the one or more nominal repetitions configured by the UL transmission configuration; and transmitting the actual repetition including the fill symbol that replaces the isolated symbol via the unlicensed spectrum and to the base station.

[0102] Embodiment 18 includes the non-transitory computer readable medium of claim 17 and / or some other embodiment herein, wherein the actual repeated transmission from the UE is a physical uplink shared channel (PUSCH) repetition type B transmission.

[0103] Embodiment 19 comprises a non-transitory computer-readable medium according to claim 17 and / or some other embodiment herein, wherein the isolated symbol is determined by a boundary of the time slot or a switching point within the time slot immediately adjacent to a DL transmission defined by a subframe indicator (SFI) or by an invalid symbol pattern.

[0104] Embodiment 20 comprises a non-transitory computer-readable medium according to claim 17 and / or some other embodiment herein, wherein the unlicensed spectrum is an independent New Radio (NR) unlicensed spectrum supporting shared ultra-reliable low latency communications (URLLC) with synchronized frame-based equipment (FBE) in a controlled environment.

[0105] Embodiment 21 includes a base station comprising: a transceiver configured to communicate with a user equipment (UE); and a processor communicatively coupled to the transceiver and configured to: use the transceiver and transmit to the UE a downlink message including an uplink (UL) transmission configuration to transmit one or more nominal repetitions from the UE to the UL via an unlicensed spectrum in a time division duplex (TDD) new radio (NR) communication system; and use the transceiver and receive from the UE a physical uplink shared channel (PUSCH) repetition type B transmission including a fill symbol, wherein the fill symbol is a replacement for an isolated symbol of the PUSCH repetition type B transmission, and the PUSCH repetition type B transmission is among a plurality of PUSCH repetition type B transmissions forming the one or more nominal repetitions configured by the UL transmission configuration.

[0106] Embodiment 22 includes a base station according to embodiment 21 and / or some other embodiment herein, wherein the UL transmission configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

[0107] Embodiment 23 includes a base station according to embodiment 21 or some other embodiment of the present invention, wherein the fill symbol is selected from: the last symbol of the most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE; wherein the fill symbol is transmitted at the same frequency position as the frequency position of the last symbol used for the most recent PUSCH repetition type B transmission or the frequency position of the first symbol used for the earliest PUSCH repetition type B transmission; and wherein the fill symbol is transmitted with the same transmission power as the transmission power of the last symbol used for the most recent PUSCH repetition type B transmission or the transmission power of the first symbol used for the earliest PUSCH repetition type B transmission.

[0108] Embodiment 24 includes a user equipment (UE) comprising: a transceiver configured to wirelessly communicate with a base station; and a processor communicatively coupled to the transceiver and configured to: determine that a symbol is an isolated symbol of an actual repetition based at least in part on an uplink (UL) transmission configuration from the base station; determine a fill symbol to replace the determined isolated symbol in the actual repetition; and generate the actual repetition including the fill symbol.

[0109] Embodiment 25 includes a UE according to embodiment 24 and / or some other embodiment herein, wherein the UL transmission configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

[0110] Embodiment 26 includes a UE according to embodiment 24 and / or some other embodiment herein, wherein the actual repeated transmission from the UE is a physical uplink shared channel (PUSCH) repetition type B transmission in a time division duplex (TDD) new radio (NR) communication system.

Claims

1. A user equipment (UE), comprising: a transceiver configured to wirelessly communicate with a base station; and a processor communicatively coupled to the transceiver and configured to: determining, based at least in part on a nominal repetition configuration received from the base station, that a single symbol is an orphan symbol in a physical uplink shared channel (PUSCH) repetition type B transmission in a time division duplex (TDD) new radio (NR) communication system, wherein the orphan symbol is contained in a first actual repetition of a size of one symbol, the one symbol being an uplink symbol or a flexible symbol, and the first actual repetition is a portion of a nominal repetition, the nominal repetition being segmented into a plurality of actual repetitions, the plurality of actual repetitions including the first actual repetition having the orphan symbol, and a second actual repetition having a plurality of consecutive symbols, the second actual repetition being separated from the first actual repetition by one or more downlink symbols, the one or more downlink symbols being defined by a subframe indicator (SFI) or an invalid symbol pattern; determining a filler symbol to replace the determined isolated symbol in the PUSCH repetition type B transmission; and The PUSCH repetition type B transmission including the padding symbols is generated.

2. The UE of claim 1, wherein the nominal repetition configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

3. The UE according to claim 1, wherein generating the PUSCH repetition type B transmission including the padding symbol is generating the PUSCH repetition type B transmission including the padding symbol at the same time position as the time position of the isolated symbol.

4. The UE according to claim 1, wherein the processor is further configured to determine the padding symbol based on the last symbol of the most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE.

5. The UE of claim 4, wherein the padding symbol is transmitted at the same frequency position as the frequency position of the last symbol for the most recent PUSCH repetition type B transmission or the frequency position of the first symbol for the earliest PUSCH repetition type B transmission.

6. The UE of claim 4, wherein the padding symbol is transmitted at the same transmission power as the transmission power of the last symbol for the most recent PUSCH repetition type B transmission or the transmission power of the first symbol for the earliest PUSCH repetition type B transmission.

7. The UE of claim 1, wherein determining that the symbol is the isolated symbol is determining that the symbol is a single symbol to be transmitted in the PUSCH repetition type B transmission according to the nominal repetition configuration, or a single UL symbol to be omitted from transmission in the PUSCH repetition type B transmission.

8. The UE of claim 1, wherein the isolated symbol is determined by a boundary of a time slot or a switching point within the time slot immediately following a downlink (DL) transmission defined by a subframe indicator (SFI) or by an invalid symbol pattern.

9. The UE according to claim 8, wherein the SFI is semi-statically configured or dynamically configured, and wherein the symbol of the time slot is defined as a UL symbol for UL transmission, a DL symbol for DL ​​transmission, or a flexible symbol for UL transmission or DL ​​transmission.

10. The UE according to claim 8, wherein the invalid symbol pattern is a semi-static configuration or a semi-static configuration indicated by dynamic signaling, and wherein symbols from the bitmap of the invalid symbol pattern marked with "1" are defined as symbols that cannot be used for UL transmission.

11. The UE of claim 1, wherein the processor is further configured to transmit, via the transceiver, to the base station, the PUSCH repetition type B transmission including the padding symbol.

12. A method for a user equipment (UE), comprising: transmitting data to a base station via an unlicensed spectrum in a time division duplex (TDD) new radio (NR) communication system, wherein the unlicensed spectrum is used for both uplink (UL) transmission and downlink (DL) transmission; determining, based at least in part on an UL transmission configuration received from the base station, that a single symbol is an orphan symbol in a physical uplink shared channel (PUSCH) repetition type B transmission, wherein the orphan symbol is contained in a first actual repetition of a size of one symbol, the one symbol being an uplink symbol or a flexible symbol, and the first actual repetition is a portion of a nominal repetition, the nominal repetition being segmented into a plurality of actual repetitions, the plurality of actual repetitions including the first actual repetition having the orphan symbol, and a second actual repetition having a plurality of consecutive symbols, the second actual repetition being separated from the first actual repetition by one or more downlink symbols, the one or more downlink symbols being defined by a subframe indicator (SFI) or an invalid symbol pattern; determining a filler symbol to replace the determined isolated symbol in the PUSCH repetition type B transmission; and The PUSCH repetition type B transmission including the padding symbols is generated.

13. A method according to claim 12, wherein the fill symbol is selected from: the last symbol of the most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, the first symbol of the earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE.

14. The method of claim 13, wherein the padding symbol is transmitted at the same frequency position as the frequency position of the last symbol for the most recent PUSCH repetition type B transmission or the frequency position of the first symbol for the earliest PUSCH repetition type B transmission.

15. The method of claim 13, wherein the UL transmission configuration is configured based at least in part on radio resource control (RRC) signaling, at least in part on activation of downlink control information (DCI), or at least in part on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

16. The method of claim 15, wherein the UL transmission configuration is a Type 1 configured grant, and only the RRC signaling is used to configure the time domain resource allocation for the UE; wherein the UL transmission configuration is a type 2 configured grant, and the RRC signaling is used together with the DCI activation to configure the time domain resource allocation for the UE; wherein the RRC signaling is used together with the MAC CE signaling to configure the time domain resource allocation for the UE; or The RRC signaling is used together with the MAC CE signaling and the dynamic signaling from the DCI activation to configure the time domain resource allocation for the UE.

17. A non-transitory computer-readable medium storing instructions that, when executed by a processor of a user equipment (UE), cause the processor to perform operations comprising: receiving, by the UE and from a base station, a downlink message including an uplink (UL) transmission configuration to transmit one or more nominal repetitions from the UE to the UL; transmitting data by the UE to the base station via an unlicensed spectrum, wherein the unlicensed spectrum is used for both UL transmission and downlink (DL) transmission; determining, based at least in part on the UL transmission configuration received from the base station, that a single symbol is an isolated symbol, wherein the isolated symbol is contained in a first actual repetition of a size of one symbol, the one symbol being an uplink symbol or a flexible symbol, and the first actual repetition is a portion of a nominal repetition, the nominal repetition being segmented into a plurality of actual repetitions, the plurality of actual repetitions including the first actual repetition having the isolated symbol, and a second actual repetition having a plurality of consecutive symbols, the second actual repetition being separated from the first actual repetition by one or more downlink symbols, the one or more downlink symbols being defined by a subframe indicator (SFI) or an invalid symbol pattern; determining a fill symbol to replace the determined isolated symbol in the actual repetition; and The actual repetitions including the filler symbols replacing the orphan symbols are transmitted over the unlicensed spectrum to the base station.

18. The non-transitory computer-readable medium of claim 17, wherein the actual repeated transmission from the UE is a physical uplink shared channel (PUSCH) repetition type B transmission.

19. The non-transitory computer readable medium of claim 17, wherein the orphan symbol is determined by a boundary of the time slot or a switching point within the time slot immediately following a DL transmission defined by a subframe indicator (SFI) or by an invalid symbol pattern.

20. The non-transitory computer-readable medium of claim 17, wherein the unlicensed spectrum is an independent New Radio (NR) unlicensed spectrum supporting shared Ultra-Reliable Low Latency Communications (URLLC) with synchronized frame-based equipment (FBE) in a controlled environment.

21. A base station, comprising: a transceiver configured to communicate with a user equipment (UE); and a processor communicatively coupled to the transceiver and configured to: using the transceiver and transmitting to the UE a downlink message including an uplink (UL) transmission configuration to transmit one or more nominal repetitions from the UE to the UL over an unlicensed spectrum in a time division duplex (TDD) New Radio (NR) communication system; as well as Using the transceiver and receiving a physical uplink shared channel (PUSCH) repetition type B transmission including a fill symbol from the UE, wherein the fill symbol is a replacement for an isolated symbol of the PUSCH repetition type B transmission, and the PUSCH repetition type B transmission is among multiple PUSCH repetition type B transmissions that form the one or more nominal repetitions configured by the UL transmission configuration, wherein the isolated symbol is a single symbol, and the isolated symbol is contained in a first actual repetition of the size of one symbol, the one symbol is an uplink symbol or a flexible symbol, and the first actual repetition is a part of the nominal repetition, the nominal repetition is segmented into multiple actual repetitions, the multiple actual repetitions include the first actual repetition with the isolated symbol, and a second actual repetition with multiple consecutive symbols, the second actual repetition is separated from the first actual repetition by one or more downlink symbols, and the one or more downlink symbols are defined by a subframe indicator (SFI) or an invalid symbol pattern.

22. The base station of claim 21, wherein the UL transmission configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

23. The base station of claim 21, wherein the filler symbol is selected from: a last symbol of a most recent PUSCH repetition type B transmission having more than one symbol before the PUSCH repetition type B transmission, a first symbol of an earliest PUSCH repetition type B transmission having more than one symbol after the PUSCH repetition type B transmission, a cyclic prefix symbol, or a symbol determined by the UE; wherein the padding symbol is transmitted at the same frequency position as the last symbol for the most recent PUSCH repetition type B transmission or the first symbol for the earliest PUSCH repetition type B transmission; and wherein the padding symbol is transmitted at the same transmission power as the transmission power of the last symbol for the most recent PUSCH repetition type B transmission or the transmission power of the first symbol for the earliest PUSCH repetition type B transmission.

24. A user equipment (UE), comprising: a transceiver configured to wirelessly communicate with a base station; and a processor communicatively coupled to the transceiver and configured to: determining, based at least in part on an uplink (UL) transmission configuration from the base station, that a single symbol is an orphan symbol, wherein the orphan symbol is contained in a first actual repetition of a size of one symbol, the one symbol being an uplink symbol or a flexible symbol, and the first actual repetition is a portion of a nominal repetition, the nominal repetition being segmented into a plurality of actual repetitions, the plurality of actual repetitions including the first actual repetition having the orphan symbol, and a second actual repetition having a plurality of consecutive symbols, the second actual repetition being separated from the first actual repetition by one or more downlink symbols, the one or more downlink symbols being defined by a subframe indicator (SFI) or an invalid symbol pattern; determining a fill symbol to replace the determined isolated symbol in the actual repetition; and The actual repetition including the fill symbol is generated.

25. The UE of claim 24, wherein the UL transmission configuration is configured at least in part based on radio resource control (RRC) signaling, at least in part based on activation of downlink control information (DCI), or at least in part based on medium access control (MAC) control element (MAC CE) signaling to configure time domain resource allocation for the UE.

26. The UE of claim 24, wherein the actual repetition is also transmitted from the UE to the base station as a physical uplink shared channel (PUSCH) repetition type B transmission in a time division duplex (TDD) new radio (NR) communication system.

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