CN116056223A

CN116056223A - Method and apparatus for supporting multiple services in a wireless communication system

Info

Publication number: CN116056223A
Application number: CN202211723100.8A
Authority: CN
Inventors: 南映瀚; T.D.诺夫兰; B.L.恩格; S.拉马克里什纳; 郭力; 张建中
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2016-01-13
Filing date: 2017-01-13
Publication date: 2023-05-02
Also published as: WO2017123045A1

Abstract

The present disclosure relates to communication methods and systems for converging fifth generation communication systems for supporting high data rates beyond fourth generation systems with technologies for the internet of things. The present disclosure provides a method performed by a user equipment in a wireless communication system. The method comprises the following steps: receiving configuration information of a bandwidth from a base station, the configuration information including information on frequency resources of the bandwidth and information on a second subcarrier spacing of the bandwidth; and transmitting or receiving a signal based on the configuration information; receiving an access signal including a synchronization signal and a broadcast signal for a main information block from a base station based on a default subcarrier spacing; and obtaining information about a first subcarrier spacing for receiving the configuration information based on the access signal.

Description

Method and apparatus for supporting multiple services in a wireless communication system

The present application is a divisional application of application title "method and apparatus for supporting multiple services in a wireless communication system" of application title 201780013692.5, day 2017, month 1, and 13.

Technical Field

The present application relates generally to wireless communication systems. More particularly, the present disclosure relates to multiple services in a wireless system.

Background

In order to meet the demand for increased wireless data services from the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Thus, the 5G or pre-5G communication system is also referred to as a 'super 4G network' or a 'LTE-after-system'. A 5G communication system is considered to be implemented in a higher frequency band (mmWave), for example, a 60GHz band, to achieve a higher data rate. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, massive antenna techniques are discussed in 5G communication systems. In addition, in the 5G communication system, development of system network improvement is being conducted based on advanced small cells, cloud Radio Access Networks (RANs), ultra dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multipoint (CoMP), receiving-end interference cancellation, and the like. In 5G systems, hybrid FSK and QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) have been developed as Advanced Code Modulation (ACM), and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and Sparse Code Multiple Access (SCMA) as advanced access technologies.

The internet, as a human-centric connected network for human generation and consumption of information, is now evolving into the internet of things (IoT) in which distributed entities such as items exchange and process information without human intervention. Internet of everything (IoE) has emerged as a combination of IoT technology and big data processing technology through a connection with a cloud server. With the need for technology elements such as "sensing technology", "wired/wireless communication and network infrastructure", "service interface technology" and "security technology" for IoT implementations, sensor networks, machine-to-machine (M2M) communications, machine Type Communications (MTC), etc. have recently been investigated. Such IoT environments may provide intelligent internet technology services that create new value to human life by collecting and analyzing data generated among connected items. IoT may be applied in a variety of fields including smart homes, smart buildings, smart cities, smart cars or interconnected cars, smart grids, healthcare, smart instrumentation, and advanced medical services through aggregation and combination between existing Information Technology (IT) and various industrial applications.

In keeping with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, techniques such as sensor networks, MTC, and M2M communication may be implemented through beamforming, MIMO, and array antennas. Applications of the cloud Radio Access Network (RAN) as the big data processing technology described above may also be considered as an example of aggregation between 5G technology and IoT technology.

The initial commercialization of fifth generation (5G) mobile communications is expected to be around 2020, which in recent years has taken increasing power from the industry and academia with worldwide technological activity regarding various candidate technologies. Candidate drivers for 5G mobile communications include massive antenna technology ranging from traditional cellular bands up to high frequencies to provide beamforming gain and support increased capacity, flexible adaptation to new waveforms (e.g., new Radio Access Technology (RAT)) with various services/applications of different needs, new multiple access schemes supporting massive connections, and the like. The International Telecommunications Union (ITU) has classified usage scenarios for 2020 and later International Mobile Telecommunications (IMT) into 3 main groups, such as enhanced mobile broadband, large-scale Machine Type Communication (MTC), and ultra-reliable and low-latency communications. In addition, ITCs have specified target requirements such as peak data rates of 20 gigabits per second (Gb/s), data rates of 100 megabits per second (Mb/s) of user experience, spectral efficiency improvement of 3X, support for mobility up to 500 kilometers per hour (kilometers per hour), 1 millisecond (ms) delay, connection density of 106 devices per km2, network energy efficiency improvement of 100X, and regional traffic capacity of 10Mb/s/m 2. While not all of the requirements need be met at the same time, the design of 5G networks should provide flexibility to support various applications that meet some of the above requirements based on usage.

The above information is presented as background information only to aid in the understanding of the present disclosure. No determination is made as to whether any of the above is applicable as prior art with respect to the present disclosure, and no assertion is made.

Disclosure of Invention

Technical proposal

According to various embodiments in the present disclosure, a method performed by a User Equipment (UE) in a wireless communication system. The method comprises the following steps: receiving configuration information of a bandwidth from a base station BS, the configuration information including information on frequency resources of the bandwidth and information on a second subcarrier spacing of the bandwidth; and transmitting or receiving a signal based on the configuration information; receiving an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) from the BS based on a default subcarrier spacing; and obtaining information about a first subcarrier spacing for receiving the configuration information based on the access signal.

According to various embodiments in the present disclosure, a user equipment UE in a wireless communication system includes: a transceiver configured to receive configuration information of a bandwidth from a base station BS, the configuration information including information on frequency resources of the bandwidth and information on a second subcarrier spacing of the bandwidth, and to transmit or receive a signal based on the configuration information, to receive an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) from the BS based on a default subcarrier spacing; and a processor operatively coupled with the transceiver, the processor configured to obtain information about a first subcarrier spacing for receiving the configuration information based on the access signal.

According to various embodiments in the present disclosure, a base station BS in a wireless communication system includes: a transceiver configured to transmit configuration information of a bandwidth to a user equipment UE, the configuration information including information on a frequency resource of the bandwidth and information on a second subcarrier spacing of the bandwidth, and to transmit or receive a signal based on the configuration information, and to transmit an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) to the UE based on a default subcarrier spacing; and a processor operatively coupled with the transceiver, the processor configured to provide information regarding a first subcarrier spacing for transmitting the configuration information based on the access signal.

According to various embodiments in the present disclosure, a method performed by a base station BS in a wireless communication system includes: transmitting configuration information of a bandwidth to a user equipment UE, the configuration information including information on frequency resources of the bandwidth and information on a second subcarrier spacing of the bandwidth, and transmitting or receiving a signal based on the configuration information, transmitting an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) to the UE based on a default subcarrier spacing, and providing information on a first subcarrier spacing for transmitting the configuration information based on the access signal.

According to various embodiments in the present disclosure, an apparatus of a terminal in a wireless communication system includes at least one transceiver and at least one processor. The at least one transceiver is configured to transmit a random access signal generated at a first subcarrier spacing to a Base Station (BS) and to receive control signaling providing a resource configuration including a second subcarrier spacing. The at least one processor is configured to perform communication using the resource configuration.

According to various embodiments in the present disclosure, an apparatus of a base station in a wireless communication system includes at least one processor and at least one transceiver. The at least one processor is configured to set a resource configuration to perform the communication. The at least one transceiver is configured to receive a random access signal generated at a first subcarrier spacing from a terminal and to transmit control signaling providing a resource configuration including a second subcarrier spacing.

According to various embodiments in the present disclosure, a method for operating a terminal in a wireless communication system includes: the method includes transmitting a random access signal generated at a first subcarrier spacing to a Base Station (BS), receiving control signaling providing a resource configuration including a second subcarrier spacing, and performing communication by using the resource configuration.

According to various embodiments in the present disclosure, a method for operating a base station in a wireless communication system includes: setting a resource configuration to perform communication, receiving a random access signal to be generated at a first subcarrier spacing from a terminal, and transmitting control signaling providing the resource configuration including a second subcarrier spacing.

Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.

Drawings

For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numbers indicate like parts:

fig. 1 illustrates an example wireless network according to an embodiment of this disclosure;

fig. 2 illustrates an example eNB according to an embodiment of the disclosure;

fig. 3 illustrates an example UE in accordance with an embodiment of the present disclosure;

fig. 4A illustrates a high-level diagram of an orthogonal frequency division multiple access transmit path according to an embodiment of the present disclosure;

fig. 4B illustrates a high-level diagram of an orthogonal frequency division multiple access receive path according to an embodiment of the present disclosure;

fig. 5 illustrates a network slice according to an embodiment of the present disclosure;

fig. 6 illustrates an example of a frame structure of a network for supporting two segments according to an embodiment of the present disclosure;

Fig. 7 illustrates an Orthogonal Frequency Division Multiplexing (OFDM) signal for a network supporting two segments according to an embodiment of the present disclosure;

fig. 8 illustrates an example of a frame structure of a network for supporting a plurality of services according to an embodiment of the present disclosure;

fig. 9 illustrates another example of a frame structure of a network for supporting a plurality of services according to an embodiment of the present disclosure;

fig. 10 illustrates an example of a self-contained frame structure according to an embodiment of the present disclosure;

FIG. 11A illustrates an example of a self-contained frame structure with 2 fragments in accordance with an embodiment of the present disclosure;

FIG. 11B illustrates an example of a self-contained frame structure with a single fragment in accordance with an embodiment of the present disclosure;

FIG. 11C illustrates another example of a self-contained frame structure with 2 fragments in accordance with an embodiment of the present disclosure;

fig. 12A illustrates an example of frame/subframe/TTI composition according to an embodiment of the disclosure;

fig. 12B illustrates another example of frame/subframe/TTI composition according to an embodiment of the disclosure;

fig. 13 illustrates an example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure;

fig. 14 illustrates another example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure;

Fig. 15 illustrates yet another example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure;

fig. 16 illustrates an example of User Equipment (UE) operation in accordance with an embodiment of the present disclosure;

fig. 17 illustrates an example of a frame structure for a super-reliable and low-delay (URLL) fragment according to an embodiment of the present disclosure;

FIG. 18 illustrates an example of a frame structure for enhancing mobile broadband (eMBB) fragments in accordance with an embodiment of the present disclosure;

fig. 19 illustrates an example of multi-Radio Access Technology (RAT) operation in accordance with an embodiment of the present disclosure;

fig. 20 illustrates an example of default OFDM numerology in Frequency Division Multiplexing (FDM) according to an embodiment of the disclosure;

fig. 21 illustrates subcarrier indexes of a first synchronization signal according to an embodiment of the present disclosure;

fig. 22 illustrates subcarrier indexes of a second synchronization signal according to an embodiment of the present disclosure;

FIG. 23 illustrates an example of default numerology on subbands according to an embodiment of the present disclosure;

FIG. 24 illustrates an example of numerology on subbands in accordance with embodiments of the present disclosure;

fig. 25A illustrates an example of time-frequency resources for initial access according to an embodiment of the present disclosure;

fig. 25B illustrates another example of time-frequency resources for initial access according to an embodiment of the present disclosure;

Fig. 25C illustrates an example of time-frequency resources for a Physical Downlink Channel (PDCH) and a synchronization signal for initial access in accordance with an embodiment of the present disclosure;

FIG. 26A illustrates an example of a resource index according to an embodiment of the present disclosure;

FIG. 26B illustrates another example of a resource index according to an embodiment of the present disclosure; and

fig. 27 illustrates Reference Signal (RS) mapping in subframe aggregation according to an embodiment of the present disclosure.

Detailed Description

Figures 1 through 27, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.

The following documents are included in the present disclosure by reference herein as if fully set forth herein: 3GPP TR 22.891v1.2.0, "Study on New Service and Markets Technology Enablers"

Before proceeding with the following detailed description, it may be beneficial to set forth definitions of certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," and derivatives thereof, encompass both direct and indirect communication. The terms "comprising" and "including" and derivatives thereof are intended to be inclusive. The term "or" is inclusive, meaning and/or. The phrase "associated with," and derivatives thereof, means included, interconnected with, contained within, connected to, or otherwise connected to, coupled to, communicable with, cooperable with, interweaved with, juxtaposed with, proximate to, joined to, or otherwise joined with, having, a property of, having a relationship with, or having a relationship with, and the like. The term "controller" refers to any device, system, or portion thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. At least one of the phrases ". When used with a listed item means that different combinations of one or more of the listed items may be used, and that only one item in the list may be required. For example, "at least one of A, B and C" includes any combination of the following: A. b, C, A and B, A and C, B and C, and a and B and C.

Furthermore, the various functions described below may be implemented or supported by one or more computer programs, each formed of computer readable program code and embodied in a computer readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase "computer readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer readable medium" includes any type of medium capable of being accessed by a computer, such as Read Only Memory (ROM), random Access Memory (RAM), a hard disk drive, a Compact Disc (CD), a Digital Video Disc (DVD), or any other type of memory. "non-volatile" computer-readable media exclude wired, wireless, optical, or other communication links that carry transitory electrical signals or other signals. Non-transitory computer readable media include media in which data can be permanently stored and media in which data can be stored and subsequently rewritten, such as rewritable optical disks or erasable memory devices.

Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

Fig. 1 through 4B below describe various embodiments implemented in a wireless communication system and through the use of Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. The description of fig. 1-3 is not intended to imply physical or architectural limitations with respect to the manner in which different embodiments may be implemented. The various embodiments of the present disclosure may be implemented in any suitably arranged communication system.

Fig. 1 illustrates an example wireless network according to an embodiment of this disclosure. The embodiment of the wireless network shown in fig. 1 100 is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of this disclosure.

As shown in fig. 1 100, the wireless network includes an eNB 101, an eNB 102, and an eNB 103. The eNB 101 communicates with the eNB 102 and the eNB 103. The eNB 101 is also in communication with at least one network 130, such as the internet, a proprietary Internet Protocol (IP) network, or other data network.

The eNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipment (UEs) within a coverage area 120 of the eNB 102. The first plurality of UEs includes UE 111 that may be located in a Small Business (SB), UE 112 that may be located in a business (E), UE 113 that may be located in a WiFi Hotspot (HS), UE 114 that may be located in a first residence (R), UE 115 that may be located in a second residence (R), and UE116 that may be a mobile device (M), such as a cellular telephone, wireless laptop, wireless PDA, etc. The eNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within the coverage area 125 of the eNB 103. The second plurality of UEs includes UE 115 and UE116. In some embodiments, one or more of the eNBs 101-103 may communicate with each other and with UEs 111-116 using 5G, LTE, LTE-A, wiMAX, wiFi or other wireless communication techniques.

Depending on the network category, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a Transmission Point (TP), a transceiver point (TRP), an enhanced base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a WiFi Access Point (AP), or other wireless enabled device. The base station may provide wireless access according to one or more wireless communication protocols, e.g., 5G 3GPP new radio interface/access (NR), long Term Evolution (LTE), LTE-advanced (LTE-A), high Speed Packet Access (HSPA) Wi-Fi 802.11a/b/g/n/ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to the network infrastructure components that provide wireless access to remote terminals. Furthermore, the term "user equipment" or "UE" may refer to any component such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "reception point" or "user equipment", depending on the type of network. For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless equipment that wirelessly accesses the BS, whether the UE is a mobile device (such as a mobile phone or a smart phone) or a stationary device (such as a desktop computer or a vending machine) as is commonly known.

The dashed lines illustrate the approximate extent of

coverage areas

120 and 125, with

coverage areas

120 and 125 being shown approximately circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with enbs, such as

coverage areas

120 and 125, may have other shapes including irregular shapes depending on the configuration of the eNB and the variations in radio environment associated with natural and artificial obstructions.

As described in more detail below, one or more of UEs 111-116 include circuitry, procedures, or a combination thereof for efficient CSI (channel state information) reporting on PUCCH (physical uplink control channel) in an advanced wireless communication system. In certain embodiments, one or more of the enbs 101-103 comprise circuitry, procedures, or a combination thereof for receiving efficient CSI reports on PUCCH in an advanced wireless communication system.

Although fig. 1 100 illustrates one example of a wireless network, various changes may be made to fig. 1 100. For example, a wireless network may include any number of enbs and any number of UEs in any suitable arrangement. Further, the eNB101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130. Similarly, each eNB 102-103 can communicate directly with the network 130 and provide the UE with direct wireless broadband access to the network 130. In addition,

enbs

101, 102 and/or 103 may provide access to other or additional external networks, such as external telephone networks or other types of data networks.

Fig. 2 200 illustrates an example eNB 102 according to an embodiment of the disclosure. The embodiment of eNB 102 illustrated in fig. 2 200 is for illustration only, and

enbs

101 and 103 of fig. 1 100 may have the same or similar configuration. However, enbs have a variety of configurations, and fig. 2 200 does not limit the scope of the present disclosure to any particular implementation of an eNB.

As shown in fig. 2 200, eNB 102 includes multiple antennas 205a-205n, multiple RF transceivers 210a-210n, transmit (TX) processing circuitry 215, and Receive (RX) processing circuitry 220. The eNB 102 also includes a controller/processor 225, a memory 230, and a backhaul or network interface 235.

RF transceivers 210a-210n receive incoming RF signals from antennas 205a-205n, such as signals transmitted by UEs in network 100. The RF transceivers 210a-210n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signal is sent to RX processing circuit 220, and the RX processing circuit 220 generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. The RX processing circuit 220 sends the processed baseband signals to a controller/processor 225 for further processing.

In some embodiments, the RF transceivers 210a-201n are also capable of receiving random access signals generated at a first subcarrier spacing from a User Equipment (UE) and transmitting downlink control signaling including a Physical (PHY) resource configuration including a second subcarrier spacing.

In some embodiments, the RF transceivers 210a-201n are also capable of transmitting a PHY resource configuration (the sub-band containing downlink synchronization signals) in a sub-band located at the center of the system bandwidth, and performing at least one of uplink reception or downlink transmission according to the PHY resource configuration.

In some embodiments, the RF transceivers 210a-201n are also capable of transmitting downlink control signaling that includes a plurality of PHY resource configurations, each PHY resource configuration containing a subcarrier spacing value.

TX processing circuitry 215 receives analog or digital data (e.g., voice data, network data, email, or interactive video game data) from controller/processor 225. TX processing circuitry 215 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 210a-210n receive the outgoing processed baseband or IF signals from TX processing circuitry 215 and up-convert the baseband or IF signals to RF signals for transmission via antennas 205a-205 n.

The controller/processor 225 may include one or more processors or other processing devices that control the overall operation of the eNB 102. For example, controller/processor 225 may control the reception of forward channel signals and the transmission of reverse channel signals by RF transceivers 210a-210n, RX processing circuitry 220, and TX processing circuitry 215 in accordance with well-known principles. The controller/processor 225 may also support additional functions, such as more advanced wireless communication functions. For example, the controller/processor 225 may support beamforming or directional routing operations in which the transmitted signals from the multiple antennas 205a-205n are weighted differently to effectively steer the transmitted signals in a desired direction. Any of a variety of other functions may be supported in eNB 102 by controller/processor 225.

In some embodiments, controller/processor 225 includes at least one microprocessor or microcontroller. As described in more detail below, eNB102 may include circuitry, programs, or a combination thereof for processing of CSI reports on PUCCH. For example, the controller/processor 225 may be configured to execute one or more instructions stored in the memory 230 that are configured to cause the controller/processor to process feedback components such as vector quantization of channel coefficients.

The controller/processor 225 is also capable of executing programs and other processes residing in memory 230, such as an OS. The controller/processor 225 may move data into the memory 230 or out of the memory 230 as needed by performing processing.

The controller/processor 225 is also coupled to a backhaul or network interface 235. The backhaul or network interface 235 allows the eNB102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 235 may support communication via one or more any suitable wired or wireless connections. For example, when eNB102 is implemented as part of a cellular communication system (e.g., supporting 5G, LTE or LTE-a), interface 235 may allow eNB102 to communicate with other enbs via a wired or wireless backhaul connection. When the eNB102 is implemented as an access point, the interface 235 may allow the eNB102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the internet). Interface 235 includes any suitable structure that supports communication via a wired or wireless connection, such as an ethernet or RF transceiver.

In some embodiments, the controller/processor 225 is also capable of setting a PHY resource configuration for at least one of uplink reception or downlink transmission.

In such an embodiment, the PHY resource configuration includes a plurality of configurations including a subcarrier spacing value to be used for a subband for at least one of uplink reception or downlink transmission and information for the subband. In such embodiments, the PHY resource configuration further includes information indicating the presence of a blank gap on the boundary of a consecutive slot over which the UE is scheduled to receive the plurality of transport blocks. In such an embodiment, the PHY resource configuration further includes information that generates a reference signal scrambling sequence. In such embodiments, the PHY resource configuration includes resources corresponding to at least one of ultra-reliable and low-latency (URLL) configuration information, enhanced mobile broadband (eMBB) configuration information, or large-scale machine type communication (mctc) configuration information.

Memory 230 is coupled to controller/processor 225. A portion of memory 230 may include RAM and another portion of memory 230 may include flash memory 230 or other ROM.

Although fig. 2 200 illustrates one example of eNB 102, various changes may be made to fig. 2 200. For example, eNB 102 may include any number of each component shown in fig. 2 200. As a particular example, an access point may include multiple interfaces 235 and the controller/processor 225 may support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of TX processing circuitry 215 and a single instance of RX processing circuitry 220, eNB 102 may include multiple instances of each (e.g., one for each RF transceiver). Furthermore, the various components in fig. 2 200 may be combined, further subdivided or omitted, and additional components may be added according to particular needs.

Fig. 3 300 illustrates an example UE116 according to an embodiment of this disclosure. The embodiment of UE116 illustrated in fig. 3 300 is for illustration only and UEs 111-115 of fig. 1 100 may have the same or similar configuration. However, the UE has a variety of configurations, and fig. 3 300 does not limit the scope of the present disclosure to any particular implementation of the UE.

As shown in fig. 3 300, UE116 includes an antenna 305, a Radio Frequency (RF) transceiver 310, TX processing circuitry 315, a microphone 320, and Receive (RX) processing circuitry 325.UE 116 also includes speaker 330, processor 340, input/output (I/O) Interface (IF) 345, touch screen 350, display 355, and memory 360. Memory 360 includes an Operating System (OS) 361 and one or more applications 362.

RF transceiver 310 receives incoming RF signals from antenna 305 that are transmitted by enbs of network 100. The RF transceiver 310 down-converts the incoming RF signal to generate an Intermediate Frequency (IF) or baseband signal. The IF or baseband signal is sent to an RX processing circuit 325, which RX processing circuit 325 generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. RX processing circuit 325 sends the processed baseband signals to speaker 330 (e.g., for voice data) or to processor 340 for further processing (e.g., for web-browsing data).

In some embodiments, the RF transceiver 310 is capable of transmitting random access signals generated at a first subcarrier spacing to a Base Station (BS) and receiving downlink control signaling including a Physical (PHY) resource configuration including a second subcarrier spacing.

In some embodiments, the RF transceiver 310 is capable of receiving the PHY resource configuration in a sub-band located on a center of the system bandwidth, the sub-band including the downlink synchronization signal, and performing at least one of uplink transmission or downlink reception according to the PHY resource configuration.

In some embodiments, RF transceiver 310 is capable of receiving downlink control signaling that includes a plurality of PHY resource configurations, each PHY resource configuration containing a subcarrier spacing value.

TX processing circuitry 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (e.g., network data, email, or interactive video game data) from processor 340. TX processing circuitry 315 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceiver 310 receives the outgoing processed baseband or IF signal from TX processing circuitry 315 and up-converts the baseband or IF signal to an RF signal that is transmitted via antenna 305.

Processor 340 may include one or more processors or other processing devices and execute OS 361 stored in memory 360 to control the overall operation of UE 116. For example, processor 340 may control the reception of forward channel signals and the transmission of reverse channel signals by RF transceiver 310, RX processing circuit 325, and TX processing circuit 315 in accordance with well-known principles. In some embodiments, processor 340 includes at least one microprocessor or microcontroller.

Processor 340 is also capable of executing other processes and programs resident in memory 360, such as processes for CSI reporting on the PUCCH. The main processor 340 may move data into the memory 360 or out of the memory 360 as needed by performing processing. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from an eNB or operator. The processor 340 is also coupled to an I/O interface 345, which I/O interface 345 provides the UE 116 with the ability to connect to other devices, such as laptop computers and handheld computers. I/O interface 345 is the communication path between these accessories and processor 340.

In some embodiments, the processor 340 is also capable of setting a PHY resource configuration for at least one of uplink transmission or downlink reception. In such an embodiment, the PHY resource configuration includes a plurality of configurations including a subcarrier spacing value to be used for a subband for at least one of uplink transmission or downlink reception and information for the subband. The information for the sub-band may indicate at least one of a bandwidth of the sub-band or the number of sub-carriers included in the sub-band. In such embodiments, the PHY resource configuration further includes information indicating the presence of a blank gap on the boundary of a consecutive slot over which the UE is scheduled to receive the plurality of transport blocks. In such an embodiment, the PHY resource configuration further includes information that generates a reference signal scrambling sequence. In such embodiments, the PHY resource configuration includes resources corresponding to at least one of ultra-reliable and low-latency (URLL) configuration information, enhanced mobile broadband (eMBB) configuration information, or large-scale machine type communication (mctc) configuration information.

Processor 340 is also coupled to touch screen 350 and display 355. An operator of UE 116 may use touch screen 350 to input data into UE 116. Display 355 may be a liquid crystal display, light emitting diode display, or other display capable of presenting text and/or at least limited graphics, such as from a website.

A memory 360 is coupled to the processor 340. Portions of memory 360 may include Random Access Memory (RAM) and another portion of memory 360 may include flash memory or other Read Only Memory (ROM).

Although fig. 3 300 illustrates one example of UE 116, various changes may be made to fig. 3 300. For example, the various components in fig. 3 300 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs. As a particular example, the processor 340 may be divided into multiple processors, such as one or more Central Processing Units (CPUs) and one or more Graphics Processing Units (GPUs). Further, while fig. 3 300 illustrates the UE 116 configured as a mobile phone or smart phone, the UE may be configured as a mobile or stationary device of other types.

Fig. 4a400 is a high-level diagram of transmit path circuitry. For example, transmit path circuitry may be used for Orthogonal Frequency Division Multiple Access (OFDMA) communications. Fig. 4b 450 is a high-level diagram of receive path circuitry. For example, the receive path circuitry may be used for Orthogonal Frequency Division Multiple Access (OFDMA) communications. In fig. 4a400 and 4b 450, for downlink communications, transmit path circuitry may be implemented in a base station (eNB) 102 or relay station and receive path circuitry may be implemented in a user equipment (e.g., user equipment 116 of fig. 1 100). In other examples, for uplink communications, receive path circuitry 450 may be implemented in a base station (e.g., eNB 102 of fig. 1) or relay station, and transmit path circuitry may be implemented in a user equipment (e.g., user equipment 116 of fig. 1) 100.

The transmit path circuitry includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an Inverse Fast Fourier Transform (IFFT) block 415 of size N, a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. The receive path circuitry 450 includes a Down Converter (DC) 455, a remove cyclic prefix block 460, a serial-to-parallel (S-to-P) block 465, a size N Fast Fourier Transform (FFT) block 470, a parallel-to-serial (P-to-S) block 475, and a channel decode and demodulate block 480.

At least some of the components in fig. 4a400 and 4b 450 may be implemented in software, while other components may be implemented by configurable hardware or a mixture of software and configurable hardware. In particular, it is noted that the FFT blocks and IFFT blocks described in this disclosure document may be implemented as configurable software algorithms, wherein the value of size N may be modified depending on the implementation.

Furthermore, while the present disclosure relates to embodiments implementing a fast fourier transform and an inverse fast fourier transform, this is by way of illustration only and should not be construed to limit the scope of the present disclosure. It will be appreciated that in alternative embodiments of the present disclosure, the fast fourier transform function and the inverse fast fourier transform function may be readily replaced by a Discrete Fourier Transform (DFT) function and an Inverse Discrete Fourier Transform (IDFT) function, respectively. It will be appreciated that for DFT and IDFT functions, the value of the N variable may be any integer (i.e., 1,4,3,4, etc.), while for FFT and IFFT functions, the value of the N variable may be any integer that is a power of two (i.e., 1,2,4,8, 16, etc.).

In transmit path circuitry 400, a channel coding and modulation block 405 receives a set of information bits, applies coding (e.g., LDPC coding) and modulation (e.g., quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) input bits to produce a sequence of frequency domain modulation symbols. Serial-to-parallel block 410 converts (i.e., demultiplexes) the serial modulated symbols into parallel data to produce N parallel symbol streams, where N is the IFFT/FFT size used in BS 102 and UE 116. The size N IFFT block 415 then performs an IFFT operation on the N parallel symbol streams to produce a time domain output signal. Parallel-to-serial block 420 converts (i.e., multiplexes) the parallel time-domain output symbols from size N IFFT block 415 to produce a serial time-domain signal. The cyclic prefix block 425 is added and then the cyclic prefix is inserted into the time domain signal. Finally, up-converter 430 modulates (i.e., up-converts) the output of add cyclic prefix block 425 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before being converted to RF frequency.

The transmitted RF signals arrive at the UE 116 after passing through the wireless channel and perform operations at the eNB 102 that are the inverse of those. The down converter 455 down converts the received signal to baseband frequency and the remove cyclic prefix block 460 removes the cyclic prefix to produce a serial time domain baseband signal. Serial-to-parallel block 465 converts the time-domain baseband signal to a parallel time-domain signal. The size N FFT block 470 then performs an FFT algorithm to produce N parallel frequency domain signals. Parallel-to-serial block 475 converts the parallel frequency-domain signal into a sequence of modulated data symbols. Channel decode and demodulate block 480 demodulates and then decodes the modulated symbols to recover the original input data stream.

each of the enbs 101-103 may implement a transmit path similar to the transmission to the user equipment 111-116 in the downlink and may implement a receive path similar to the reception from the user equipment 111-116 in the uplink. Similarly, each of the user equipments 111-116 may implement a transmit path corresponding to the architecture for transmissions to the enbs 101-103 in the uplink and may implement a receive path corresponding to the architecture for reception from the enbs 101-103 in the downlink.

Various embodiments of the present disclosure provide high performance scalability with respect to the number and geometry of transmit antennas, and flexible CSI feedback (e.g., reporting) framework and structure for LTE enhancements when FD-MIMO with large two-dimensional antenna arrays is supported. To achieve high performance, more accurate CSI for MIMO channels is required at enbs, particularly for FDD scenarios. In this case, embodiments of the present disclosure recognize that it may be necessary to replace the previous LTE (e.g., rel.12) precoding framework (PMI-based feedback). In the present disclosure, the attribute of FD-MIMO is considered for the present disclosure. For example, the use of closely spaced large 2D antenna arrays is primarily directed to high beamforming gain rather than spatial multiplexing with a relatively small angular spread (angular spread) for each UE. Thus, compression or dimension reduction of channel feedback according to a fixed set of basis functions and vectors can be achieved. In another example, updated channel feedback parameters (e.g., channel angle spreads) may be obtained with low mobility using UE-specific higher layer signaling. In addition, CSI reporting (feedback) may also be performed cumulatively.

Another embodiment of the present disclosure incorporates CSI reporting methods and processes with reduced PMI feedback. The lower rate PMI report belongs to the long term DL channel statistics and represents the selection of a set of precoding vectors recommended by the UE to the eNB. The disclosure also includes a DL transmission scheme in which the eNB transmits data to the UE via a plurality of beamforming vectors when using an open loop diversity scheme. Thus, the use of long-term precoding ensures that open-loop transmit diversity is applied across only a limited number of ports (instead of all ports available for FD-MIMO, e.g., 64). This avoids having to support an excessively high dimension for open loop transmit diversity, reduces CSI feedback overhead and improves robustness when CSI measurement quality is unreliable.

The 5G communication system usage has been identified and described. Those use cases can be roughly classified into three different groups according to the type of service. The first group is a group for a first service requiring a high data transmission rate. The first service is referred to as eMBB (enhanced mobile broadband). The first service may be used for technologies requiring high average spectral efficiency. For example, the first service may be used for conventional mobile communications, virtual reality technology, and the like. In other words, the first service is determined to be performed with high-order/second requirements, less stringent delays, and reliability requirements.

The second group is a group for a second service requiring high reliability and low delay. The second service indicates URLL (ultra reliable and low latency). The second service may be used for technologies with relatively high requirements for reliability, delay and throughput. For example, the second service may be used to control the faulty network, remote operation, and communication processing required in the autonomous vehicle. In other words, the second service is determined with less stringent bit/second requirements.

The third group is a group for a third service requiring a large-scale connection with the terminal. The third service indicates large-scale machine type communication (mctc). The third service requires a high random access capacity and low power consumption to allow connection with a large-scale terminal. The number of devices may be determined to be as many as 100,000 to 1,000,000 per square kilometer, but reliability/throughput/delay requirements may be less stringent for the third service. The scenario may also relate to power factor requirements, where battery consumption should be minimized as much as possible.

In LTE technology, the time gap X may include one or more of DL transmission portions, guard, UL transmission portions, and combinations thereof, whether they are dynamically and/or semi-statically indicated. Further, in one example, the DL transmission portion of time slot X includes downlink control information and/or downlink data transmissions and/or reference signals. In another example, the UL transmission portion of time slot X includes uplink control information and/or uplink data transmissions and/or reference signals. In addition, the use of DL and UL does not preclude other deployment scenarios, e.g., side links, backhaul, relay. In some embodiments of the invention, "subframe" refers to another name of "time slot X" or vice versa. These different services are supported for a 5G network called network slicing.

In some embodiments, "subframe" and "slot" may be used interchangeably. In some embodiments, a "subframe" refers to a Transmission Time Interval (TTI) that may include a set of "slots" for data transmission/reception by a UE.

In some embodiments, parameters, functions, operations, and information related to the physical layer will be referred to as "PHY" for convenience of explanation. For example, an optimization operation at the physical layer may be referred to as "PHY optimization".

Fig. 5 500 illustrates a network slice according to an embodiment of the present disclosure. The embodiment of network slice shown in fig. 5 500 is for illustration only. One or more components illustrated in fig. 5 500 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments are used without departing from the scope of this disclosure. As shown in fig. 5 500, the network slice includes an operator's network 510, a plurality of RANs 520, a plurality of enbs 530a, 530b, a plurality of small cell base stations 535a, 335 b, a urll segment 540a, a smart watch 545a, a car 545b, a truck 545c, a smart lawn 545d, a power supply 555a, a temperature 555b, an emtc segment 550a, an embb segment 560a, a smart phone (e.g., a cellular phone) 565a, a laptop 565b, and a tablet 565c (e.g., a tablet PC).

The operator's network 510 includes a plurality of radio access networks 520-RANs associated with network devices, e.g., enbs 530a and 530b, small cell base stations (femto/pico enbs or Wi-Fi access points) 535a and 535b, etc. The operator's network 510 may support various services depending on the segment concept. In one example, four

segments

540a, 550b, and 560a are supported by the network. The URLL fragment 540a serves UEs requiring URLL services, e.g., car 545b, truck 545c, smart watch 545a, smart glasses 545d, etc. Two

mMTC segments

550a and 550b serve UEs requiring mMTC services, such as power meter and temperature control (e.g., 555 b), and one eMBB segment 560a serves, such as cellular phone 565a, laptop 565b, tablet 565c, requiring an eMBB.

Briefly, network slicing is a method of coping with various different quality of service (QoS) at the network level. In order to efficiently support these various QoS, fragment-specific PHY optimization may also be required. The devices 545a/b/c/d, 555a/b are examples 565a/b/c of different types of User Equipment (UE). The different types of User Equipment (UE) shown in fig. 5 500 need not be associated with a particular slice type. For example, cellular telephone 565a, laptop 565b, and tablet 565c are associated with eMBB segment 560a, but are for illustration only and these devices may be associated with any type of slice.

In some embodiments, one device is configured with more than one segment. In one embodiment, the UE (e.g., 565 a/b/c) is associated with two segments, URLL segment 540a and eMBB segment 560 a. This may be useful to support online gaming applications in which graphical information is sent through the eMBB fragments 560a and information about user interactions is exchanged through the URLL fragments 540 a.

In the current LTE standard, no fragment-level PHY is available and fragments unknowingly use most of the PHY functions. UEs are typically configured with a single set of PHY parameters (including Transmission Time Interval (TTI) length, OFDM symbol length, subcarrier spacing, etc.), which is likely to prevent the network (1) from quickly adapting to dynamically changing QoS; and (2) simultaneously supporting various QoS.

In some embodiments, respective PHY designs are disclosed that address different QoS in a network slice concept. Note that "fragment" is a term introduced merely for convenience, indicating logical entities associated with common features, e.g., numerology, upper layers including media access control/radio resource control (MAC/RRC), and shared UL/DL time-frequency resources. Alternative names for "fragments" include virtual cells, supercells, cells, etc.

Fig. 6 600 illustrates an example of a frame structure of a network for supporting two segments according to an embodiment of the present disclosure. The embodiment of an OFDM signal for a network supporting two segments shown in fig. 6 600 is for illustration only. One or more components illustrated in fig. 6 600 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 6 600, a frame structure for a network supporting two segments 600 includes a first segment 610 and a second segment 650. In addition, the first segment 610 includes data (frame/subframe/TTI) gaps 630a, control (CTRL)

gaps

620a, 660a, and 660b, data frames/subframes/TTI (data gaps) 2 670a, 670b for the segment. Similarly, the second segment 650 includes Control (CTRL) 620b, data frame/subframe/TTI for segment 1 630b, control (CTRL) 660c, and data frame/subframe/TTI for segment 2 630 c.

In some embodiments, for signals related to two segments, e.g., UE configured in a higher layer (e.g., RRC) to send/receive two segments, e.g.,

segments

1 and 2, where segment 1 is an eMBB segment 560a and segment 2 is a URLL segment 540a. In some embodiments, the PHY signals associated with the two segments are multiplexed by the network as Frequency Division Multiplexing (FDM), as shown in 610. In one such embodiment, the two BW (bandwidths) corresponding to the two segments are subbands of the serving cell BW. In some embodiments, the two BW's corresponding to the two segments are two separate serving cell BW's. In this case, the protection BW may exist between two BW corresponding to two fragments. In some embodiments, the PHY signals associated with the two segments are multiplexed by the network in the service BW as Time Division Multiplexing (TDM), as shown in 650.

In some alternative embodiments, the PHY signals associated with the two segments are multiplexed by the network as Code Division Multiplexing (CDM). In such an embodiment, a first code is assigned to the PHY signal for the first segment and a second code is assigned to the PHY signal for the second segment. In some embodiments, the PHY signals associated with both segments are SDM. In such an embodiment, the first precoder is applied to the PHY signal for the first segment and the second precoder is applied to the PHY signal for the second segment. In some embodiments, a first set of TPs transmits/receives PHY signals for a first segment and a second set of TPs transmits/receives PHY signals for a second segment. In some embodiments, PHY control and data transmission/reception for those UEs are configured with fragments that occur within the time-frequency resources allocated for the configured fragments.

In some embodiments, subframes equivalent to (or may be equivalent to) Transmission Time Slots (TTIs) include control time-frequency resources and data time-frequency resources. In such an embodiment, the sub-frame of segment 1 includes a control gap 620a (or 620 b) and a data gap 630a (or 630 b). The control signaling in 620a (620 b) indicates PHY data scheduling information in the time-frequency pool of 630a (or 630 b) to those UEs configured with segment 1.

In some embodiments, the subframes of segment 2 include control gap 660a (or 660b or 660 c) and data gap 670a (or 670b or 670 c). Control signaling in 660a (or 660b or 660 c) may indicate to those UEs configured with segment 2 PHY data scheduling information in the time-frequency pool of 670a (or 670b or 670 c). In some embodiments, the subframe length (or TTI length) may be segment-specifically configured. In one example, a first TTI length is configured for a first segment and a second TTI length is configured for a second segment. In such an embodiment, the first segment corresponds to segment 1 (eMBB segment 160 a) and the second segment corresponds to segment 2 (URLL segment 140 a) and the subframe length of the first segment is twice (m=2) the subframe length of the second segment (overall, integer multiples). In this case, URLL segment 540a may satisfy the delay constraint (delay becomes half with half the subframe length), and eMBB segment 560a may satisfy the spectral efficiency requirement (corresponding control overhead becomes half with twice the subframe length). The integer relationship of subframe lengths may help the network more efficiently FDM partition segments.

The specific integer (m) value may be explicitly or implicitly signaled to the UE or to a segment (or virtual cell) of the UE. In one example, the value of m is indicated by a one-bit field transmitted, for example, in broadcast or unicast signaling. In another example, state 0 means m=1 and state 1 means m=2. In yet another example, state 0 means m=1 and state 1 means m=4. In yet another example, state 0 means m=2 and state 1 means m=4. In yet another example, the value of m is indicated by a two-bit field transmitted, for example, in broadcast or unicast signaling. In one example, state 00 means m=1, and state 01 means m=2; state 10 means m=4; and state 11 is reserved.

In some embodiments, the subframe length is described in terms of OFDM symbols. In one example, the subframe length of the eMBB fragment (fragment 1) 540a is 70 (=14×5 or alternatively 56=14×4) OFDM symbols, and the subframe length of the URLL fragment (fragment 2) is 14 OFDM symbols.

In some embodiments, the length of the control gap (e.g., 620a/b,660 a/b/c) may be configured segment-specifically. In such an embodiment, the length of control gap 620a of the eMBB fragment (fragment 1) 560a is longer than the length of control gap 660b of the URLL fragment (fragment 2) 540 a. The control gap of 660a/b may be dynamically adjusted to account for different numbers of served UEs in the data frames 260 a/b.

In some embodiments, similar to the PDCCH gap, the control gap (620 a/b,660 a/b/c) corresponds to a PHY DL control gap. In some embodiments, regions 630a/b and 670a/b/c correspond to sequences of subframes that contain only data (i.e., no PHY control is embedded in 630a/b and 670 a/b). In these cases, control regions 620a/b and 660a/b/c may correspond to respective numbers of OFDM symbols.

In some embodiments, each of 630a/b and 670a/b/c corresponds to a single self-contained subframe 610/615 for DL data transmission, with uplink control signaling (a/N) 640a/b multiplexed at the end of the subframe 610/615.

Fig. 7 illustrates an Orthogonal Frequency Division Multiplexing (OFDM) signal for a network supporting two segments according to an embodiment of the present disclosure. The embodiment of an OFDM signal for a network supporting two segments shown in fig. 7 700 is for illustration only. One or more components illustrated in fig. 7 700 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 7 700, the OFDM signal for a network supporting two segments 700 includes a plurality of

BW

710, 750, OFDM symbols (duration) 720, 760, cp 720a, a plurality of

IFFTs

720b, 760a, 760b, subcarrier partitioning for segment 1 730, subcarrier partitioning option 1 for segment 2 770a, and subcarrier partitioning option 2 for segment 2 770 b.

Fig. 7 illustrates an OFDM symbol structure for two bands BW1 710 and BW2 750 in order to facilitate network FDM partitioning supporting two segments, in accordance with certain embodiments of the present invention.

In some embodiments, the PHY signals of the first segment reside within BW1 710 and the PHY signals of the second segment reside within BW2 750. In one such embodiment, the first segment corresponds to the eMBB segment 560a and the second segment corresponds to the URLL segment 540a. Between the two

BW partitions

710 and 750, there may be a protection BW 790. When the protection BW 790 is configured for the UE, the UE is not expected to transmit/receive on the protection BW 790. The reject/translate band of the BW specific filter may be located at BW corresponding to 790.

In some embodiments, the UE is configured to receive two fragments; and is also configured with the same set of numerical parameters for both BW710 and 750. In some embodiments, the UE is configured to receive two fragments; and are also configured with two different sets of numerical parameters for the two BW710 and 750. In such an embodiment, the digital parameters include at least one of CP length, subcarrier spacing, OFDM symbol length, FFT size, and the like.

Numerology refers to how the units of resources (i.e., time, frequency) used in a transmission (i.e., unicast transmission) are configured. For example, LTE systems use a single numerology with 15kHz as the subcarrier spacing in unicast transmissions. In this disclosure, various numerology will be described for supporting a wide frequency range (i.e., similar to 1-100 GHz) and various service schemes such as eMBB, URLL, and mctc.

In some embodiments, two separate bandpass digital filters are applied for the two BW's. In some embodiments, a high pass digital filter is applied to the first BW710 and a low pass digital filter is applied to the second BW 750. In such an embodiment, the guard BW 790 is employed such that there is little interference from the two BW710 and 750, e.g., reject/transition bands are located in the BW 790. Further, multiple subcarriers may be semi-statically configured higher layers for protecting BW 790.

In some embodiments, the OFDM symbol duration includes a Cyclic Prefix (CP) duration and a duration of an IFFT for the NFFT symbol. Then, the OFDM symbol duration is determined as the sum of the two durations for CP and IFFT. In some embodiments, OFDM symbol duration 720 for BW1 710 is configured to be greater than (or an integer (n) times) twice OFDM symbol duration 760 of BW2 750. This is useful when supporting a wider coverage of the eMBB fragment 560a for operation in BW1 710 than the URLL fragment 540a for operation in BW2 350.

Similar to the integer m according to certain embodiments of the present disclosure, a particular integer (n) value may explicitly or implicitly signal a UE or a segment (or virtual cell) of a UE. In some embodiments, n is equal to m, and a single signaling configures these values. In some embodiments, n and m are configured separately. In some embodiments, a UE configured to receive two fragments receives a first service (fragment) from a first TP and a second service (fragment) from a second TP. In such an embodiment, the first and second TPs correspond to eNB 530a and small cell 530c, respectively.

In some embodiments, the first and second TPs correspond to the first eNB530 a and the second eNB530b, respectively. Other combinations of network devices are possible to support this mode of operation.

In some embodiments, CP length 720a configured for BW1710 is longer than CP length 720a configured for BW 2750. Note that the longer CP length of 720a may cover a wider geographic area than the shorter CP length of 720 a.

In some embodiments, CP length 720a for BW1710 is the same as CP length 720a for BW2 750. If OFDM symbol length 720 is twice the subframe length 760a/b, then the CP overhead of BW1710 is half the CP length of BW2750, and therefore BW1710 is more efficient than segment 2 760 (OFDM symbol duration). In some embodiments, the subcarrier spacing is configured separately for BW1710 and BW2 750. In such an embodiment, the subcarrier spacing is configured in such a way that subcarrier spacing 770a of BW2750 is twice as wide (generally, an integer (k) times) as subcarrier spacing 730 of BW1 710.

The subcarrier spacing may refer to a frequency gap between allocated subcarriers. With subcarrier spacing, OFDM communication systems enable data transmission while maintaining orthogonality among subcarriers. For example, in the LTE standard, the subcarrier spacing is fixed at 15kHz.

Similar to integers m and n according to certain embodiments of the present disclosure, particular integer (k) values may be explicitly or implicitly signaled to a UE or a segment (or virtual cell) of a UE. In some embodiments, n, m, and k are all the same, and a single signal configures these values. In some embodiments, n, m, and k are all configured separately. In some embodiments, the subcarrier spacing values are configured in such a way that subcarrier spacing 770b of BW2 750 is the same as subcarrier spacing 730 of BW1 710.

Fig. 8 800 illustrates an example of a frame structure of a network for supporting multiple services according to an embodiment of the present disclosure. The embodiment of the frame structure of the network for supporting a plurality of services shown in fig. 8 800 is for illustration only. One or more components illustrated in fig. 8 800 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 8 800, a frame structure of a network for supporting a plurality of services 800 includes a plurality of cells (e.g., fragments, services) 810a, 810b, 810c and a plurality of cells (e.g., fragments, services) 810d, 820a, 820b, 820c, 820d, 830a, 830b, 830c, 830d, 830e, and 830f.

The number of segments configured in the network may change instantaneously. During the duration of T1, X MHz BW corresponds to a single serving cell (denoted as cell 1) or a single segment (denoted as segment 0) 810a, 810c. During the duration of T2 followed by T1, in one alternative embodiment, the two segments/services/

UEs

820a, 820b are frequency division multiplexed in BW, and in another alternative embodiment, the two segments/services/

UEs

820c, 820d are time division multiplexed. During the duration of T3 followed by T2, the X MHz BW again operates as a single serving cell or single segment 810b, 810d. During the duration of T4 followed by T3, in one alternative embodiment, three segments/services/UEs (830 a, 830b and 830 c) are frequency division multiplexed in BW.

In some embodiments, segment/service/UE 1 830d is time division multiplexed with segments/service/

UEs

2 and 3 830e, 830f, and segments/service/

UEs

2 and 3 830e, 830f are frequency division multiplexed. The frame structure provides flexibility to deploy the network in a time-varying manner to cope with time-varying settings of traffic types. In such an embodiment, the number of fragments configured in the BW of the network varies with time. In one embodiment, the BW of X MHz includes

cells

810a, 810b, 810c, 810d in the time slots of T1 and T3. The same BW is partitioned into BW for two

segments

820a and 820b in time slot T2 and three BW for three

segments

830a, 830b, and 830c in time slot T4.

In some embodiments, the control signaling transmitted in the cell 1 810a, 810b, 810c, 810d includes information about the identity of the segment and the time-frequency resources for the segment located in the next gap. In some embodiments, the network is configured and operates according to a common duration (i.e., t1=t3) for cell-based operation. In some embodiments, the network configures and operates according to a common duration (i.e., t2=t4) for segment-based operation, regardless of the number of segments configured.

In some embodiments, the cell-based

operations

810a, 810b, 810c, 810d may also correspond to operations for a segment, which may be referred to as an anchor segment (anchor slice), namely segment 0. In some embodiments, the network is configured and operated with periodically recurring cell (or anchor segment) based operation durations (time-frequency regions). In other words, cell-based

operations

810a, 810b, 810c, 810d and their previous and future reoccurrences occur with a constant period P (in OFDM symbols, or alternatively in subframes/slots).

In some embodiments, the cell-based

operating regions

810a, 810b, 810c, 810d include synchronization signals and primary broadcast signals (including necessary broadcast information).

In some embodiments, the synchronization signal and primary broadcast signal are transmitted in a contiguous subset of X MHz during the occurrence of cell-based

operations

810a, 810b, 810c, 810d (e.g., segment-common PHY channels). In such an embodiment, the synchronization signal and the primary broadcast signal are transmitted in the center sub-band of X MHz. In such an embodiment, an additional broadcast signal is transmitted in the center sub-band of X MHz to indicate the segment BW allocation in the subsequent time slot.

In some embodiments, the cell-based

operation regions

810a, 810b, 810c, 810d also include a set of UL resources that may be used for UL random access for UL synchronization. In some embodiments, anchor segments are used for control signaling transmission/reception and non-anchor segments are used for data transmission/reception. In FDD systems, UL and DL anchor segments are configured in the same duration, i.e., T1 and T3 (810 a, 810b, 810c, 810 d).

In a TDD system, the time domain resources on which the UL anchor segment is configured are a positive offset different from the time domain resources on which the DL anchor segment is configured. In one example, if a DL anchor is configured at subframe n, then a UL anchor is configured at subframe n+k, where k=1, 2, 3, 4. The offset number (k) may be configured explicitly in the DCI transmitted in the DL anchor fragment or implicitly through Random Access Channel (RACH) configuration.

In some embodiments, the UE is semi-statically configured with one or more fragments (or virtual cells) at a higher layer. The UE is further configured to track time-frequency resources of each configured segment. In such an embodiment (fragment common control signaling), the UE is configured to receive and process control information transmitted in the cell-based operation region 810a for obtaining information on time-frequency resources of each configured fragment. Alternatively, in another such embodiment (fragment-specific control signaling), the UE is configured to receive and process control information transmitted in the cell-based operation region 810a for obtaining information on time-frequency resources of each configured fragment.

In some embodiments, if the UE is configured with N fragments, the UE is configured to process N control signaling, where n=1, 2. The N control signaling may be transmitted on Nx Physical Downlink Control Channels (PDCCHs) whose Cyclic Redundancy Check (CRC) is scrambled with a segment-specific Identifier (ID). For example, a CRC for a first control signaling of a first segment is scrambled with a first ID, and a CRC for a second control signaling of a second segment is scrambled with a second ID, and so on.

The segment-common or segment-specific may be UE-specific or cell-specific signaling. In case the UE performs signaling specifically, one or more CRCs of one or more xpdcchs are scrambled with the UE-ID (and one or more fragment-specific IDs or fragment-common IDs).

In some embodiments, the control information includes at least one of the following parameters: the duration of the next segment-specific frame, i.e., T2; the number of fragments configured in T2; a time/frequency partition indication for each configured segment; and a digital parameter for each (or alternatively, a single) configured segment. The code block to RE mapping method (i.e., time-first or frequency-first mapping according to fig. 13 1300, 14 1400, or 15 1500) for each configured segment.

Fig. 9 illustrates another example of a frame structure of a network for supporting multiple services according to an embodiment of the present disclosure. The embodiment of the frame structure of the network for supporting multiple services shown in fig. 9 900 is for illustration only. One or more components illustrated in fig. 9 900 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 9 900, the frame structure of a network for supporting multiple services includes BW1, BW2950, control (CTRL) 905, 920, 960a, 960b, cell 905b, data frame/subframe/TTI 930 for segment 1, data frame/subframe/TTI 970a, 970b for segment 2.

In some embodiments, full BW is used for cell 1 during a first duration corresponding to cell-based (or anchor-segment) control 905a and data frame/subframe/TTI 905b for cell 1. In some embodiments, during a first duration corresponding to 905a and 905b, control signaling is transmitted to indicate to the UE a segment-specific time-frequency allocation supporting two segments in two

BW

910 and 950.

Fig. 101000 illustrates an example of a self-contained frame structure according to an embodiment of the present disclosure. The embodiment of the self-contained frame structure shown in fig. 101000 is for illustration only. One or more components illustrated in fig. 101000 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 10 1000, the self-contained frame structure includes a plurality of

subframes

1001, 1002. In addition, the

subframes

1001 and 1002 include a plurality of subframes 1015a, 1015b,m SB1 1005a,SB2 1005b,UL ctrl 1040b, a plurality of DL data 1020a, 1020b, and guard bands (G) 1030a, 1030b. Subframe 1015a refers to the portion of

subframes

1001 and 1002 corresponding to SB1 1005a, and subframe 1015b refers to the portion of

subframes

1001 and 1002 corresponding to SB2 1005 b.

In some embodiments, SB1 1005a is configured for the first fragment (fragment 1); and SB2 1005b is configured to be used for the second fragment (fragment 2). For SB1 1005a, subframe 1005 includes DL data 1020a, a guard gap (1030 a), and UL control (1040 a). For SB2, in an alternative embodiment, subframe 1005 includes DL data 1020b, guard gap (1030 b), and UL control (1040 b). For SB2, in an alternative embodiment, subframe 1015b includes DL data 1020c and 1020d, a white space (1050), a guard gap (1030 b), and UL control (1040 b). In some embodiments, the DL data durations 1020a, 1020b may further include a DL PHY control duration 620a/660a followed by a DL PHY data duration 630a/670 a. The

guard slots

1030a, 1030b are provided to give the UE enough time to decode DL data to generate a/N, and also apply timing advance to transmit a/N carried in UL control slots (1040 a, 1040 b).

In some embodiments, as shown in 1001 of fig. 10 1000, the length of DL data durations 1020a, 1020b may be configured segment-specifically. In particular, the length of DL data durations 1020a, 1020b may be configured differently depending on the application (and fragment) of the configuration.

In one such embodiment, the UE is assigned two fragments, an eMBB fragment 560a and a URLL fragment 540a. The PHY signal corresponding to the eMBB fragment 560a is transmitted/received in SB2 1005b and the PHY signal corresponding to the ull fragment 540a is transmitted/received in SB1 1005 a. For SB1 1005a for URLL fragment 540a, a shorter DL data duration is configured, and for SB2 1005b for eMBB fragment 560a, a longer DL data duration is configured. With longer DL data duration, the spectral efficiency for the eMBB fragment 560a is improved due to the fewer overhead ratios. With shorter DL data duration, the delay of the URLL fragment 540a is reduced.

For eNB operation, multiplexing of UL reception and DL transmission in the same time resource should be avoided, as it introduces large interference to UL reception at the LNA (low noise amplifier), which is caused by the DL signal transmitted at high power, would make UL decoding practically infeasible. The blank space 1050 illustrated in 1002 is useful for preventing this condition from occurring. Without the gap 1050, ul control 1040a and DL data 1020b collide in time, causing the problem.

In some embodiments, the eNB configures its controller such that the blank gap 1050 aligns with the UL control gap 1040a, as shown in fig. 10 1000.

In some embodiments, the location of the gap 1050 is indicated in control signaling to the serving UE receiving DL data on SB2 1005 b. In this case the UE knows the white space 1050 and the UE should assume that DL modulation symbols are mapped only to those DL data regions of 1020c and 1020d (e.g., regions excluding the white space 1050 among the allocated regions). In other words, the UE should apply a rate matching around the blank gap 1050 for DL data reception.

In some embodiments, the location of the white space 1050 is predefined or configured by higher layers for a subframe, but the presence of the white space is indicated in control signaling. Control signaling indicating the location or presence of a blank gap may be transmitted in a dynamic control channel that may be transmitted per subframe 1015 b. The dynamic control channel may be a dedicated control channel signaling DL allocations to UEs or a common control channel for a group or all of the serving UEs.

In some alternative embodiments, the eNB applies lower rate channel coding to cope with data puncturing due to the white space. In this case, the UE does not know the blank gap 1050 and the UE assumes that DL modulation symbols are mapped onto the DL data region of 1020 b. The RE mapping methods illustrated in 1300 and 1500 may be applied when the methods are used.

Fig. 11a1100A illustrates an example of a self-contained frame structure with 2 fragments according to an embodiment of the present disclosure. The embodiment of the self-contained frame structure with 2 fragments shown in fig. 11a1100A is for illustration only. One or more components illustrated in fig. 11a1100A may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 11a1100A, a self-contained frame structure 1100A with 2 fragments includes a frame 1105A and a bandwidth (B) MHz 1110A. In fig. 11a1100a, the X (horizontal) axis represents time, and the Y (vertical) axis represents frequency. "SF" refers to a subframe within a frame; "DL" means downlink transmission (eNodeB to UE), "UL" means uplink transmission (UE to eNodeB), "SRS" means uplink pilot sequence transmitted by UE, "a/N" means acknowledgement-negative acknowledgement feedback from UE regarding reception success or failure of downlink packets transmitted on downlink Subframes (SF), "PDCCH (physical downlink control channel)" means control channel, "PDSCH (physical downlink shared channel)" means data channel, "CRS (common reference signal or cell specific reference signal)" means a set of pilot reference samples known to all UEs for demodulation control channel, "UERS" means a set of pilot reference samples for demodulation of UE specific PDSCH.

In some embodiments, a time gap between DL and UL SF, UL and DL SF, or between DL SF and subsequent DL SF is achieved.

As shown in fig. 11a1100A, the total bandwidth of B MHz is allocated among K UEs so that each UE can be allocated up to 2 service fragments. It will be appreciated that 2 service fragments are exemplary. PDCCH0 is a common control channel interpreted by all UEs; in an embodiment, it may indicate the number of fragments and the fragment boundaries. The location of PDCCH0 is known to all UEs. If the content of PDCCH0 indicates the presence of 2 segments, as in this example, the locations of segment-specific control channels PDCCH1 (for segment # 1) and PDCCH2 (for segment # 2) will be known to the UE; PDCCH1 and PDCCH2 are located inside resource allocations corresponding to the respective segments. Common Reference Signal (CRS) pilots are used to demodulate PDCCH0, PDCCH1 and PDCCH2.

In some embodiments, the frame of segment 1 includes a PDCCH1 region followed by an N1 DL SF, the N1 DL SF being followed by a single UL SF including SRS and acknowledgement-negative acknowledgement feedback for packets sent in the DL portion of the frame. In another embodiment of the present invention, the UL SF including the SRS may exist after the DL SF including only PDCCH1 or after some other DL SF other than DL SF #n1. PDCCH1 indicates DL resources allocated to a set of UEs within segment 1 for the entirety of the frame. All UEs allocated DL resources in the frame send back acknowledgement-negative acknowledgement feedback in the UL SF at the end of the frame. A set of UEs that may be larger than the set of UEs allocated resources in the frame transmit SRS in the UL SF at the end of the frame or in another UL SF in the frame. In some embodiments, SRS transmission occurs before a/N transmission.

Segment 2 is divided in time into sets of SFs starting from DL SFs starting from segment control channel PDCCH2 and ending by UL SFs. For each set of such SFs, the control channel PDCCH2 indicates DL SFs allocated to the set of UEs. The set of UEs sends acknowledgement-negative acknowledgement feedback in the UL SF at the end of the set of SFs. A set of UEs that may be larger than the set of UEs allocated resources in the frame transmit SRS in the UL SF at the end of the frame or in another UL SF in the frame. In one embodiment, the SRS transmission occurs prior to the A/N transmission.

Fig. 11b 1100b illustrates an example of a self-contained frame structure with a single fragment according to an embodiment of the present disclosure. The embodiment of the self-contained frame structure with a single fragment shown in fig. 11b 1100b is for illustration only. One or more components illustrated in fig. 11b 1100b may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 11B 1100B, a self-contained frame structure with a single slice includes a frame 1105B and a bandwidth (B) MHz 1110B.

Fig. 11c 1100c illustrates another example of a self-contained frame structure with 2 fragments according to an embodiment of the present disclosure. The embodiment of the self-contained frame structure with 2 fragments shown in fig. 11c 1100c is for illustration only. One or more components illustrated in fig. 11c 1100c may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 11C 1100C, a self-contained frame structure 1100C with a single slice includes a frame 1105C and a bandwidth (B) MHz 1110C. In some embodiments, frame structures having only segment 1 and segment 2 operations are shown in fig. 11b 1100b and fig. 11c 1100 c.

Fig. 12a1200A illustrates an example of frame/subframe/TTI composition according to an embodiment of the disclosure. The embodiment of the frame/subframe/TTI combination shown in fig. 12a1200A is for illustration only. One or more components illustrated in fig. 12a1200A may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 12a1200A, the frame/subframe/TTI combination includes a plurality of slots (slot 0, slot 1, slot n-1) 1220A, 1220b, 1220c, a plurality of RSs 1230A, and a plurality of data 1240A.

In some embodiments, a subframe or frame or TTI 1200A (corresponding to DL data regions 1020A, 1020 b) includes a number n of slots (1220A, 1220b, 1220 c). Each slot includes a plurality of reference signal OFDM (RS OFDM) symbols 1230a followed by a plurality of data OFDM symbols 1240 a. This particular allocation method may be beneficial for the UE to obtain channel estimates prior to data demodulation.

In some embodiments, the UE may assume that the same precoder is applied across the entire subframe 1210 to RS 1230a for channel estimation purposes. In this embodiment, the UE may interpolate the channel estimate across slots to get a better quality channel estimate. In some embodiments, the UE may assume that the precoder applies to the RSa 1230a per slot 1220a, 1220b, 1220 c. In such embodiments, the UE may not interpolate the channel estimate across slots to get a better quality channel estimate.

In some embodiments, whether the UE can assume that the same precoder is applied across the entire subframe 1210 may be fragment-specific; in one such embodiment, the information may be conveyed by control signaling. In one such embodiment, control signaling is sent dynamically per subframe, and the UE assumes that changes are based on subframes (based on network scheduling decisions).

In some embodiments, whether the UE can apply the same precoder across the entire subframe 1210 for a segment hypothesis is determined depending on the subframe duration and/or the frequency location of the segment; in one such embodiment, the information may be conveyed by control signaling.

Fig. 12b 1200b illustrates another example of frame/subframe/TTI composition according to an embodiment of the disclosure. The embodiment of the frame/subframe/TTI combination shown in fig. 12b 1200b is for illustration only. One or more of the components illustrated in fig. 12b 1200b may be implemented in dedicated circuitry configured to perform the functions described, or one or more components may be implemented by one or more processors that execute instructions to perform the functions described. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 12B 1200B, the frame/subframe/TTI composition includes frequency locations 1210B, 1240B (e.g., frequency subbands, subbands), a subframe 1220B for segment a, and a plurality of subframes 1230B, 1250B (entire subframes) for segment B.

In some embodiments, segment a is configured with a subframe duration and frequency location 1210b; and segment B is configured with a subframe duration 1230B and frequency positions 1210B and 1240B. Segment a and segment B are spatially multiplexed on frequency subband 1210B; and only segment B operates on frequency subband 1240B. In one such embodiment, when a UE is configured to receive on segment a on sub-band 1210b on which two segments are spatially multiplexed, the UE assumes that the same precoder is applied across the entire sub-frame 1220b (e.g., slot).

In one such embodiment, when the UE is configured to receive on segment B on sub-band 1210B on which two segments are spatially multiplexed, the UE should not assume that the same precoder is applied across the entire sub-frame 1230B; alternatively, the UE may assume that the same precoder is applied across a duration corresponding to the subframe duration of segment a. In this case, the subframe duration of segment a may be equivalent to the slot duration. This per-slot precoder adaptation for segment B may help fit certain classes of MU-MIMO precoders, e.g., SLNR (signal to leakage and noise ratio) precoders or ZF (zero forcing) precoders.

In one such embodiment, when the UE is configured to receive on segment B on a sub-band 1240B (e.g., frequency location) on which only one segment is present, the UE may assume that the same precoder is applied across the entire sub-frame 1250B. In such an embodiment, the UE configured with segment B is informed of a precoding granularity assumption for each subband for demodulation, wherein the assumption is per subband or per subframe; and informs the UE configured with segment a of precoding granularity assumption applied per subframe precoding for demodulation.

In some embodiments, the UE may not assume that the same precoder is applied across the entire subframe/TTI for a segment corresponding to eMMB or having a large subframe duration; while for segments corresponding to URLLs or having short subframe/TTI duration, the UE may assume that the same precoder is applied across the entire subframe/

TTI

1210 or 1005a, 1005 b. This is because the network can perform multi-user precoding on segments of different subframe/TTI durations over the same time-frequency resources.

In some embodiments, the UE may assume that the same precoder is applied throughout the entire subframe/TTI 1210 is signaled by the network (regardless of the configured segment). The signaling may be provided by higher layer signaling or by dynamic control signaling. With dynamic control signaling per subframe/TTI, the UE assumption may change based on subframe/TTI (based on network scheduling decisions).

The time domain precoding granularity may be configured separately for the signal DMRS port and the interfering DMRS port. The DCI of the scheduled PDSCH may include explicit information of a signal DMRS port (port number) on which the UE needs to demodulate the PDSCH. The interfering DMRS ports (DMRS ports other than those configured for signaling) may be implicitly or explicitly obtained by the UE. What is assumed for signal and interference DMRS ports for the precoding granularity in the time domain may be further indicated to the UE by a field in the DCI (or an information element in RRC signaling or on a medium access control layer control element (MAC CE)).

Table 1 illustrates an example structure of an indication field (or information element) indicating precoding granularity of a signal and interference demodulation reference signal (DMRS) port. When the state is '0', the UE should assume that the precoding granularity is per slot for both the signal and interfering DMRS ports. When the states are '1', '2', and '3', the precoding granularity is interpreted according to the states of the fields of the entries of the table.

TABLE 1

Table 2 illustrates another example structure of an indication field (or information element) indicating precoding granularity of a signal and interference demodulation reference signal (DMRS) port. When the state is '0', the UE should assume that the precoding granularity is per subframe for both the signal and interfering DMRS ports. When the states are '1', '2', and '3', the precoding granularity is interpreted according to the states of the fields of the entries of the table. When the precoding granularity is "across multiple subframes (e.g., slots)", the UE should also be indicated an identification of the subframes/slots for which the UE can assume the same precoding. In one method, those subframes/slots correspond to S consecutive subframes/slots for which one or more PDSCH is scheduled for the UE by the DCI; the integer s=1, 2, 3. In another approach, the time domain precoding granularity is configured by a subframe/slot period P and a subframe/slot offset O. The UE may assume that the same precoding is applied across PDSCH scheduled within subframe/slot { pk+o+n }, where n=0, 1,., P-1 for a given integer k.

TABLE 2

In some embodiments, multiple Transport Blocks (TBs) are encoded and mapped to a data region of subframe/frame 1200. Each transport block may be partitioned into multiple code blocks that are separately encoded by a channel encoder (e.g., a 3GPP Turbo encoder, an LDPC encoder, a Reed-muller encoder, a convolutional encoder, etc.).

In some embodiments, one (SIMO) or two (MIMO) transmissions/code blocks are encoded and mapped in each slot of subframe/TTI 1210. In this case, when the subframe/TTI includes n slots, n or 2n transmission/code blocks are mapped in the subframe/TTI. In one embodiment, each transmission/code block generates an a/N, and the UE is configured to feed back N or 2N a/N bits after decoding the transmission/code block. In an alternative embodiment, one a/N is generated for all the transport/code blocks, and the decoding result across all the transport/code blocks is logically anded.

In some embodiments, each slot maps an integer number of code blocks, but the total number of transport blocks in each subframe/TTI 1210 is 1 (e.g., in the case of SIMO transmissions) or 2 (e.g., in the case of MIMO transmissions).

Fig. 13 1300 illustrates an example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure. The embodiment of the resource element mapping of the data modulation symbols shown in fig. 13 1300 is for illustration only. One or more components illustrated in fig. 13 1300 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 13 1300, the resource element map of the data modulation symbol includes slot 0 1310a, slot 1 1310b, a plurality of RE map areas 1320a, 1320b, 1320c, and a data resource element 1330.

In some embodiments, the transport block includes a plurality of code blocks. In some embodiments, a slot includes L OFDM symbols; and the subframe includes T OFDM symbols. In some embodiments, the UE is configured to receive a transport block comprising a plurality of code blocks in a subframe/TTI on K subcarriers.

In some embodiments, modulation symbols corresponding to a first Code Block (CB) of the transport block are sequentially mapped onto subcarrier 0 to a symbol comprising a slot (1310 a,1310b) Data resource element 1330 corresponding to OFDM symbol 0,..and L-1, and then mapped on subcarrier 1, etc. As shown in 1320a, where c ₀ 、c ₁ 、...、c _NCB Is the symbol of the modulation symbol stream for the first code block. Once the modulation symbols corresponding to the first code block are fully mapped, the modulation symbols corresponding to the second code block of the transport block are sequentially mapped in the next available resource according to the "time-first mapping". This is illustrated in 1320b, where d ₀ 、d ₁ 、...、d _NCB Is the symbol of the modulation symbol stream for the second code block. Once slot 0 1310a is filled with modulation symbols according to this approach, slot 1 1310b is mapped with modulation symbols according to the time-first mapping. 1320c illustrates a modulation symbol stream { e } of the third code block ₀ 、e ₁ 、...、e _NCB Mapping of.

In some embodiments, the UE may still robustly decode the transport block even if the OFDM symbol is erased. This mapping method may be useful for an eMBB to cope with occasional OFDM symbol puncturing of an eMBB transport block, e.g. for multiplexing URLLs with an eMBB, especially when an eMBB UE does not need very strict delay requirements and has sufficient buffering.

Fig. 14 1400 illustrates another example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure. The embodiment of the resource element mapping of the data modulation symbols shown in fig. 14 1400 is for illustration only. One or more components illustrated in fig. 14 1400 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 14 1400, the resource element map of the data modulation symbol includes slot 0 1410a, RE map area 1420, and data resource element 1430.

In some embodiments, the modulation symbol { c } corresponding to the first code block ₀ 、c ₁ 、...、c _NCB Sequentially mapped on OFDM symbol 0 to RE1430 corresponding to subcarrier 0,..once, K-1 including the allocated BW And then mapped on OFDM symbol 2, etc. As shown in 1420. Once the modulation symbols corresponding to the first code block are fully mapped, the modulation symbols corresponding to the second code block of the transport block are sequentially mapped in the next available resource according to the "frequency-first mapping" described herein.

In some embodiments, the UE need not buffer most of the received signal. The transport blocks are sequentially decoded in time, and once the decoding of the transport blocks is completed, the received signals corresponding to the transport blocks can be discarded. In such an embodiment, less decoding delay occurs and thus a more suitable URLL type application is achieved.

Fig. 15 1500 illustrates yet another example of resource element mapping of data modulation symbols in accordance with an embodiment of the present disclosure. The embodiment of the resource element mapping of the data modulation symbols 1500 shown in fig. 15 1500 is for illustration only. One or more components illustrated in fig. 15 1500 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 15 1500, the resource element map of the data modulation symbol 1500 includes a slot 01510a, a plurality of RE mapping regions 1520a, 1520b, and a data resource element 1530 (e.g., RE).

In some embodiments, the modulation symbol { c } corresponding to the first code block ₀ 、c ₁ 、...、c _NCB Sequentially mapped to REs 1530 corresponding to OFDM symbol 0,..and T-1, including subframe (1510), on subcarrier 0, and then mapped on subcarrier 1, etc. As shown in fig. 15 1500, once the modulation symbols corresponding to the first code block are fully mapped, the modulation symbols corresponding to the second code block of the transport block are sequentially mapped in the next available resource according to the "time-first mapping" described herein. This is illustrated in 1520 b.

In some embodiments, the RE mapping method is fragment-specific configured, wherein control signaling conveying the RE mapping method is sent in a cell-based operation (or anchor fragment) region 810a or 810 b. In one such embodiment, the eNB configures a time-first mapping (1300 or 1500) for the eMBB fragments 560a and a frequency-first mapping (e.g., fig. 14 1400) for the URLL fragments 540 a.

Note that some PHY functions must be fragment-common, and that some other PHY functions may be made fragment-specific. In some embodiments, NW (network) planning is segment specific; that is, different sets of serving cells/sites are configured/utilized for different segments. In some embodiments, a first UE configured with a first segment may transmit/receive on PHY channels corresponding to a first set of serving cells/sites; and a second UE configured with a second segment may transmit/receive on PHY channels corresponding to a second set of serving cells/sites. In such an embodiment, the network includes

network nodes

530a, 530b, 535a, and 535b (e.g., enbs). The first set of serving cells/sites for the first segment corresponds to 530a and 530b; and the second set of serving cells/sites for the second segment corresponds to 535a and 535b.

In some embodiments, the UE is configured to transmit/receive on a single segment. In such an embodiment, the fragment specific transmission/reception occurs within the configured serving cell of the UE. Note that if carrier aggregation is configured for the UE, the number of configured serving cells may be greater than 1. In some embodiments, the UE is configured to transmit/receive on multiple segments.

Fig. 161600 illustrates an example of User Equipment (UE) operations according to embodiments of the present disclosure as may be performed by a UE. The embodiment of the UE operation shown in fig. 161600 is for illustration only. One or more components illustrated in fig. 161600 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

In some embodiments, the ue is first configured with fragments in a higher layer at step 1610. In one such embodiment, the UE is configured with a "default" fragment without network intervention (i.e., the UE is manufactured to reside (camp) in a factory setting). In another such embodiment, the segments that have been configured by the NW in the previous communication are reconfigured to "default" segments at step 1610.

In some embodiments, default segment configuration is implicit at step 1610, in which case the UE is configured to camp on the cell-based operation duration/

region

810a, 810b, 810c, 810d. Following the "default" fragment configuration at step 1610, the ue is further configured to synchronize with a network node (or set of network nodes co-located like) at step 1620. For this synchronization operation, the network provides a Synchronization Signal (SS), which may be partitioned into a primary SS (PSS) and a Secondary SS (SSs). The SS (or PSS/SSs) is scrambled with a scrambling sequence that scrambles the identity nID,1 initialization.

Following the synchronization operation at step 1620, the ue is further configured to receive system information at step 1630. The system information may be transmitted via broadcast signaling. The system information may be transmitted as two ways via broadcast signaling. As a first approach, the UE may receive system information called a Master Information Block (MIB) on a master broadcast channel (PBCH) on which demodulation is aided by a first reference signal (represented by RS 1). As a second approach, the UE may receive system information called a System Information Block (SIB). The SIBs are scheduled on a physical downlink signal (PHY signal) and the demodulation thereof is also aided by a first reference signal represented by RS1, a Physical Downlink Channel (PDCH). These PHY signals, PBCH, PDCH and RS1 are scrambled with their respective scrambling sequences initialized by nID, 1.

In some embodiments, the PDCH includes a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), and the like. Following the broadcast signaling operation at step 1630, the ue is further configured to perform UL initial access (or random access procedure) at step 1640. Following the UL initial access at step 1640, the UE with one or more fragments may be further configured in a higher layer for subsequent operations at step 1650. Higher layer signaling is UE specific and may be transmitted in a Random Access Response (RAR). In some embodiments, the segment configuration at step 1650 is omitted when the UE is configured to operate with the default segment configured at step 1610.

Following the segment configuration at step 1650 or UL initial access at step 1640, the UE is further configured to receive the segment specific PHY resource configuration at step 1660 on a PDCH demodulation facilitated by a second reference signal RS 2. These PHY signals PDCH and RS2 are scrambled with their respective scrambling sequences initialized by the scrambling identifiers nID, 2.

Following the PHY resource configuration at step 1660, the UE is further configured to transmit and receive at fragment-specific PHY resources at step 1670 on an S-PDCH (fragment-specific PDCH), demodulation of which is facilitated by a third reference signal (RS 3). These PHY signals, S-PDCH and RS2 are scrambled with their respective scrambling sequences initialized by scrambling identifiers nID, 3. In some embodiments, the broadcast signaling at step 1620 and the fragment-specific PHY resource configuration at step 1660 are transmitted in a subband located at the center of the system BW, where the center subband also includes the DL synchronization signal of step 1620. The UE configured with the fragments is configured to decode the fragment specific information including the fragment specific PHY time-frequency resources during the steps of 1640 and 1660, and transmit and receive in the configured fragment specific PHY time-frequency resources.

In some embodiments, all 3 scrambling identifications, i.e., nID,1, nID,2 and nID,3 are the same. In one such embodiment, the common scrambling ID corresponds to a physical cell ID. In some embodiments, nID,1 and nID,2 are the same and equal to the physical cell ID; and nID,3 are fragment specific IDs. In some embodiments, nID,1 is equal to the physical cell ID; and nID,2 and nID,3 are the same and equal to the fragment specific ID. In some embodiments, the UE is configured to blindly check the physical cell ID (which is equal to nID,1 in one such embodiment) during DL synchronization of step 1620.

In some embodiments, one or more fragment-specific IDs corresponding to fragments of the one or more NW configurations are indicated by the fragment-specific PHY resource configuration at step 1660. In some embodiments, one or more segment specific IDs corresponding to the segments of the one or more NW configurations are indicated by broadcast signaling at step 1630. In some embodiments, the fragment-specific ID is a virtual cell ID, the value of which is selected from a set of physical cell IDs. In some embodiments, RS1 and RS2 are a first type of RS and RS3 is a second type of RS. In some embodiments, RS1, RS2, and RS3 are the same type of RS.

In some embodiments (fragment common access), each UE configured with fragments is further configured by RRC (or higher layer signaling) to identify the time/frequency resources and digital parameters of the fragment-specific PHY channel corresponding to the configured fragment. In such an embodiment, higher layer signaling is conveyed in the segment

common PHY channels

810a, 810b, 810c, and 810 d. In the initial access, the UE is configured to utilize a segment common synchronization procedure and a system information acquisition procedure in a segment common PHY channel in step 1620. In such an embodiment, the segment common synchronization procedure at step 1620 may be a serving cell-based procedure, in which case the synchronization channel sequence is scrambled with a scrambling sequence initialized with a physical cell ID; and the system information acquisition process using the broadcast signal at step 1630 is based on the cell-specific reference signal and the primary broadcast signal (and scrambling initialization is dependent on the physical cell ID).

In some alternative embodiments (fragment specific access), each UE configured with fragments is further configured to first detect fragment specific "signature" signals to identify the time/frequency resources and digital parameters of one fragment specific PHY channel. In the initial access, the UE is configured to utilize a segment-specific synchronization procedure and a system information acquisition procedure in a segment-specific PHY channel. Once the UE identifies the time/frequency resources and the digital parameters of one segment-specific PHY channel, the UE is further configured to decode segment-specific broadcast information including information identifying the time/frequency resources and the digital parameters of other segment-specific PHY channels.

In some embodiments, the UE receives multiple services (fragments) from a single TP (i.e., eNB 530a or WiFi or small cell/femto/pico eNB 530 c). In such an embodiment, the UE uses a common PHY signal for receiving multiple services (fragments). For example, signals provided for basic coverage and synchronization may generally be used for receiving/transmitting data corresponding to multiple segments by a UE (when a single network node provides multiple services). Such signals may include a synchronization signal, a main broadcast signal, and a corresponding Reference Signal (RS). Other RRC configurations and corresponding RSs may be fragment specific. In such an embodiment, the UE is configured with multiple "fragments" transmitted in a single serving cell. Some parameters including the main information block are generally applicable to those multiple fragments; other parameters may be configured specifically per segment UE. Note that "fragment" is a term entered merely for convenience in referring to such an entity; "fragments" may be named differently, e.g., virtual cells, supercells, cells, etc.

Fig. 17 1700 illustrates an example of a frame structure for a super-reliable and low-delay (URLL) fragment in accordance with an embodiment of the present disclosure. The embodiment of the frame structure for URLL segments shown in fig. 17 1700 is for illustration only. One or more components illustrated in fig. 17 1700 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 17 1700, the frame structure for the URLL fragment includes a plurality of subframes (e.g., subframe durations) 1701, 1702, dl control 1710a, self-contained

subframes

1710, 1720, 1730, 1740, 1750, guard band 1710c, and control 1710d.

The delay requirement in PHY for URLL segment 540a may be 1 millisecond. To meet this delay requirement, the self-contained subframe duration (including DL control, data, and UL control) should not exceed 1 millisecond. Furthermore, the UE or eNB may sometimes need to wait for a valid subframe boundary and thus the subframe duration needs to be even much less than 1 millisecond.

In some embodiments, the

subframe durations

1701 and 1702 on the URLL segment 540a are constants less than or equal to 0.5 milliseconds. With this frame structure, the maximum queuing delay for small packets of a UE or eNB is 0.5 milliseconds and data transmission may occur during subsequent subframe durations. Thus, the resulting PHY delay is less than or equal to 1 millisecond.

In some embodiments, the

subframe durations

1730, 1740, and 1750 on the URLL segment 540a are variables less than or equal to 0.5 milliseconds, which may depend on the size of the data packets transmitted in the subframes. In this frame structure, the subframe boundary may be anywhere. When the system does not have any data transmission, there may also be a blank duration 1760.

In these embodiments, the self-contained subframes may include DL control 1710a including scheduling information for DL/UL data 1710b, guard period 1710c, and UL/DL control 1710d that may include a/N for DL/UL data 1710 b.

Fig. 18 1800 illustrates an example of a frame structure for enhancing a mobile broadband (eMBB) fragment according to an embodiment of the disclosure. The embodiment of the frame structure for the eMBB fragment 1800 shown in fig. 18 1800 is for illustration only. One or more components illustrated in fig. 18 1800 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 18 1800, the frame structure for the eMBB fragments includes a plurality of

subframes

1801, 1802, dl controls 1810, 1850,

guard bands

1830, 1870, controls 1840, 1880, and a plurality of data 1860a, 1860b, 1860c for the first, second, and third UEs.

In some embodiments, self-contained subframe 1801 includes DL control 1810, DL/UL data 1820a,1820b, 1820c, guard 1830, and UL/DL control 1840. The DL control 1810 may schedule DL/UL data 1820a,1820b/c for UEs multiplexed in an FDM manner. In some embodiments, self-contained subframes 1802 include DL control 1850, DL/UL data 1860a, 1860b, 1860c, guard 1870, and UL/DL control 1880.DL control 1850 may schedule DL/UL data 1860a, 1860b, 1860c for UEs multiplexed in a TDM manner. In such embodiments, DL control 1810/1850 may schedule DL/UL data for multiple UEs according to FDM or any combination of TDM. In such an embodiment, UL/DL control 1840/1880 includes an a/N corresponding to the decoding result of UL/DL data of a plurality of UEs. The a/ns of multiple UEs may be multiplexed according to any combination of TDM, FDM, or CDM.

In some embodiments, the DL/UL data 1860a, 1860b, 1860c for multiple UEs is multiplexed in a TDM manner using the frame structure of 1802. Then, UL/DL control 1840/1880 is also time division multiplexed to solve the case of decoding data of the third UE at the last time. In some embodiments, multiple Radio Access Technologies (RATs) coexist in one or more frequency spectrum bands. In one such embodiment, LTE, wi-Fi, and new RATs are used by one or more operators on licensed or unlicensed spectrum. In another such embodiment, the multiple RATs are configured and used by the network as different technology-specific fragments over one or more spectrum bands.

Fig. 19 1900 illustrates an example of multi-Radio Access Technology (RAT) operation in accordance with an embodiment of the present disclosure. The embodiment of multi-RAT operation shown in fig. 19 1900 is for illustration only. One or more components illustrated in fig. 19 1900 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 19 1900, the multi-RAT operation 1900 includes an LTE-compliant segment 1901, a multi-RAT segment 1902, and a new RAT-compliant segment 1903. Further, LTE-compatible fragment perspective 1901 includes a plurality of LTE-compatible fields and a plurality of null fields 1920. The multi-RAT fragment perspective 1902 includes a new RAT field 1930. The new RAT compatible fragment perspective includes a null field 1940.

As shown in fig. 19 1900, a configuration of multi-RAT segments on two carriers f1 and f2 is illustrated in accordance with some embodiments of the invention. In fig. 19 1900, f1' represents the BW of the binding of f1+f2. In fig. 19 1900, "fragment" may be interpreted as "subframe", "frame" or "UE". Multiple LTE-compatible fragments 1910 are configured on f1 and f2, while a single larger bandwidth new RAT fragment (new RAT fragment 1930) is configured on f 1'.

In some embodiments, the multi-RAT frames (fragments) 1902 may be viewed differently by different types of UEs. In one such embodiment, an LTE-capable UE interprets the multi-RAT frame 1902 as an LTE-compatible fragment 1901. In some embodiments, a UE supporting only the new RAT interprets the multi-RAT frame 1902 as a new RAT-compatible fragment 1903.

In some embodiments, LTE UEs configured on multi-RAT frame 1902 may be configured to continuously detect 1910 the presence of CRS in an LTE-compatible region. When CRS is not present in the "null" region 1920, the UE may skip reception and assume that no control/data signal or channel is assumed to be present in the null field 1920.

In some embodiments, an advanced UE configured on the multi-RAT frame 1902 may be configured to receive signals from both the LTE-compatible region 1910 and the new RAT region 1930. In some embodiments, an advanced UE configured on the multi-RAT frame 1902 may be configured to receive signals from a new RAT region 1930. In addition, the advanced UE may treat the LTE-compatible region 1902 as a "null" region 1940. In one embodiment, the advanced UE detects the new RAT region 1930 by detecting a "signature" signal that is different from the LTE CRS.

In some embodiments, the UE is configured with an LTE compatible fragment 1910 as an "anchor" fragment. In some embodiments, the UE is configured with a new RAT fragment 1930 as an anchor fragment. In some embodiments, the UE is configured with anchor segments for each of the LTE-compatible segment 1910 and the new RAT segment 1930. In such an embodiment, the "anchor" segment provides system information for configuration and operation on other segments, and may also be used as a "fallback" segment if connections to other segments are lost or during idle mode periods.

License Assisted Access (LAA) is one example of an LTE compatible technology that can coexist with other RATs on the same carrier because it operates in a frame structure consisting of dynamic DL/UL bursts of subframes compliant with the Listen Before Talk (LBT) protocol.

In some embodiments, each multi-RAT segment 1902 utilizes an LBT protocol or other distributed spectrum sharing protocol (e.g., based on carrier sense multiple access with collision avoidance (CSMA/CA)) in order to independently and dynamically access spectrum and coexist with other multi-RAT segments. This may be beneficial to support forward compatibility because the introduction of new PHY segments of different RATs may be achieved without requiring backward compatibility of other segments, or introducing additional configuration signaling that may not be available to older devices.

In some embodiments, the multi-RAT fragment 1902 is configured and scheduled by one or more network entities (e.g., enbs or multi-RAT controllers). The ratio of time/frequency resources configured (e.g., TDM/FDM mode) and used by each segment may be determined based on service requirements (e.g., eMBB or URLL), traffic associated with each segment, or coverage requirements, and exchanged across network entities of one or more operators. This may be beneficial to support efficient multiplexing of fragments.

In some embodiments, the different segments are frequency division multiplexed, with guard bands present to avoid time overlapping DL/UL subframes. In particular, the new RAT fragment 1930 operates over a larger bandwidth (f 1') than any of the LTE-compatible PHY fragments (f 1 and f 2) 1910. In this case, coordination between the configurations of the different segments is beneficial in avoiding unnecessarily large "empty" periods. In such embodiments, the TDM/FDM mode is established between multi-RAT segments, which includes certain fixed or semi-statically configured resources for each segment and/or period, where the resources are flexibly allocated between segments of different RATs.

In some embodiments, the availability of one or more multi-RAT segments is indicated by broadcast information; or alternatively, preconfigured for a given UE based on device performance or service profile. In one such embodiment, the UE requests configuration with one or more multi-RAT fragments upon initial connection to an anchor fragment or upon initiation of one or more services associated with the fragment. In such an embodiment, where different segments are associated with multiple operators, an operator identity (e.g., public Land Mobile Network (PLMN)) may also be indicated as part of the segment configuration signaling process.

5G supports a wide variety of spectrum and a wide variety of services and devices. The air interface of 5G needs to support scalable OFDM numerology to meet various deployment scenarios. Examples of OFDM numerology include at least one of subcarrier spacing, a length of a Cyclic Prefix (CP), or a number of OFDM symbols in one SF. In this disclosure, a corresponding PHY design is disclosed that addresses multiple OFDM numerologies.

A wireless system may allow for more than one OFDM numerology for different types of transmissions. Depending on the configured OFDM numerology, the UE procedure may be configured accordingly. In a wireless system, one eNB may form a plurality of Total Radiated Powers (TRPs) as a group, referred to as a TRP group (TRPG). Each TRPG may have a TRPG ID. Within TRPG there is no Radio Resource Control (RRC) signaling required for mobility and there is some RRC reconfiguration for inter TRPG mobility.

In some embodiments, the OFDM digital configuration may include at least some of the following: subcarrier spacing for OFDM; the length of the OFDM symbol and the length of the Cyclic Prefix (CP); bandwidth for initial access signal transmission; and the number of OFDM symbols in one subframe, the length of one subframe.

In some embodiments, default OFDM numerology IS configured for initial access signal (IS) transmission. In such embodiments, the UE is configured to detect the initial access signal using default OFDM numerology. One example of default numerology is where the subcarrier spacing is 15kHz (and/or the bandwidth is 1.4 MHz).

In some embodiments, the default OFDM numerology is the minimum subcarrier spacing (and/or maximum OFDM symbol length) supported by the system on a particular carrier frequency. In some embodiments, the default OFDM numerology is a specific numerology that may generally be applied to UEs accessing all carrier bands known to both eNB and UEs.

In some embodiments, default OFDM numerology is determined as a function of integers determined by carrier frequency. In such an embodiment, the UE utilizes one or more carrier frequencies to derive default OFDM numerology, as shown in table 3. The carrier frequencies in table 3 correspond to representative carrier frequencies around the numbers shown in the entries. For example, 2GHz in the table entry means a carrier frequency around 2GHz, e.g., 2.1GHz, 1.9GHz, etc.

TABLE 3 Table 3

In some embodiments, the subcarrier spacing (and/or bandwidth) is scaled accordingly in accordance with the typical available bandwidth in the corresponding carrier frequency. In some embodiments, the UE configures default numerology in a higher layer.

In some embodiments, the UE is configured in a time-frequency resource (e.g., periodically recurring subframes) in which default OFDM numerology is used. In one example, the UE detects an initial access signal including a synchronization signal and/or a broadcast signal, etc. In this example, the UE may identify an OFDM index and/or a number of subframes (or an index of time slot X) and timing from certain initial access signals. In another example, the UE may be configured to externally use default digital time-frequency resources in addition to the alternative OFDM numerology. In yet another example, the UE performs rate matching with xPDSCH/xPUSCH around the initial access signal resource. In yet another example, the UE measures a measurement RS for RRM measurement during an initial access procedure. In such an embodiment, one or more of the following may be mapped onto time-frequency resources in which default numerology is used: an initial access signal; an xPDSCH transmitting a configuration (which may be broadcast signaling or UE-specific signaling) instead of OFDM numerology; xPCCH/xPUSCH; and a measurement RS for RRM measurement.

Fig. 20 2000 illustrates an example of default OFDM numerology in Frequency Division Multiplexing (FDM) according to embodiments of the disclosure. The embodiment of default OFDM numerology in FDM shown in fig. 20 2000 is for illustration only. One or more components illustrated in fig. 20 2000 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 20 2000, default OFDM numerology in Frequency Division Multiplexing (FDM) includes alternative OFDM numerology 2001 and default OFDM numerology 2002. Default OFDM numerology 2002 includes OFDM symbol length 2021 and subcarrier spacing 2022. The alternative OFDM numerology 2001 includes OFDM symbol length 2011 and subcarrier spacing 2012.

In some embodiments, the replacement OFDM numerology signals on the initial access signal or other broadcast channel transmitted using the default OFDM numerology. In the example of FDM, default OFDM numerology and alternate OFDM numerology in the same time slot are shown in fig. 20 2000.

As shown in fig. 20 2000, the alternative OFDM numerology 2001 has an OFDM symbol length 2011 and a subcarrier spacing 2012, and the default OFDM numerology 2002 has an OFDM symbol length 2021 and a subcarrier spacing 2022. In fig. 20 2000, the subcarrier spacing 2022 of the OFDM numerology 2002 is half the subcarrier spacing 2012 of the OFDM numerology 2001. And OFDM symbol length 2021 of OFDM numerology 2002 is twice OFDM symbol length 2011 of OFDM numerology 2001.

In some embodiments, default numerology is used for initial access signals sent in subbands in a time slot and alternate numerology is used for other subbands in the same time slot as shown in fig. 20 2000. The guard band may be interposed between a sub-band of an initial access signal using default OFDM numerology and a sub-band of other signals using other OFDM numerology. The size of the guard band may be configured by an upper layer through an RRC message.

The substitute OFDM numerology may be the same as or different from the default OFDM numerology for initial access signal transmission. In some embodiments, the UE is configured to receive signals digitally generated by default in the sub-band on which the initial access signal is mapped. On the other hand, when the UE is configured with alternative numerology, the UE is further configured to receive signals that are outside of the sub-band in place of the numerology.

In some embodiments, a new ID (e.g., TRPG ID, ultra cell ID, or cell ID) defined in a Physical Cell ID (PCID) or NR is inferred from the detected synchronization signal. In this disclosure, this ID is referred to as ID X.

In some embodiments, the substitute OFDM numerology is indicated by an implicit or explicit signaling scheme during the initial access procedure. In one example, the substitute OFDM numerology is implicitly indicated by the value of ID X. For this purpose, ID X is partitioned into several groups. Each group corresponds to an alternative OFDM numerology configuration. The UE is configured to first decode ID X from the initial access signal and then derive an alternative OFDM numerology configuration depending on which group ID X belongs to. In another example of joint coding encoded with ID X. In this example, both the alternative OFDM numerology information (which may be several bits of information, e.g., 1 or 2 bits) and ID X are inferred from the sequence ID of the original access signal. In yet another example on xPBCH, a few bits with respect to MIB. In this example, two bits on xPBCH for MIB indicate a value that replaces OFDM numerology configuration. Bit value 00 indicates value #1 for replacement OFDM numerology, bit value 01 indicates value #2 for replacement OFDM numerology, bit value 10 indicates value #3 for replacement OFDM numerology, and bit value 11 indicates value #4 for replacement OFDM numerology.

In yet another example of implicit indication of time-frequency resource locations by a particular initial access signal, the UE may detect the particular initial access signal to determine alternative OFDM numerology. In such an example, the first synchronization signal is mapped on a first subcarrier index (which may be, for example, the center subcarrier of the NR carrier) and is used to obtain synchronization around the subcarrier corresponding to the first subcarrier index. The second synchronization signal should be set on a second subcarrier index that is an offset different from the first subcarrier index, and the offset value may be selected from one of 4 candidate values, for example. One example is that the subcarrier index of the second synchronization signal is given by an equation, e.g., ki = kc + Δki, where i e {0,1,2,3} corresponds to a particular alternative numerology.

Fig. 212100 illustrates subcarrier indexes of a first synchronization signal according to an embodiment of the present disclosure. The embodiment of the subcarrier index of the first synchronization signal shown in fig. 212100 is for illustration only. One or more components illustrated in fig. 212100 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 21 2100, the subcarrier index of the first synchronization signal includes a plurality of frequency positions (subcarrier positions). The first synchronization signal is mapped on a subcarrier mapping corresponding to frequency location 2111. The second synchronization signal has four

frequency positions

2121, 2122, 2123 and 2124 corresponding to four different subcarrier offset values Δki. 2121. Each subcarrier location of 2122, 2123 and 2124 corresponds to an alternate OFDM numerology index. The UE is configured to detect the second synchronization signal and then identify a substitute OFDM numerology based on the subcarrier index of the second synchronization signal.

Fig. 222200 illustrates subcarrier indexes of the second synchronization signal according to an embodiment of the present disclosure. The embodiment of the subcarrier index of the second synchronization signal shown in fig. 222200 is for illustration only. One or more components illustrated in fig. 222200 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 222200, the subcarrier index of the second synchronization signal includes a plurality of time-

frequency resource locations

2211, 2221, 2222, 2223, 2224. In one example, the first synchronization signal is mapped on a first time-frequency resource and is used to obtain synchronization of the NR carrier. The second synchronization map is mapped to a second time-frequency mapping pattern. The pattern may be selected from one of, for example, 4 time-frequency patterns, and each pattern index corresponds to a particular alternate OFDM numerology.

As shown in fig. 22 2200, one example is that the subcarrier index of the second synchronization signal on OFDM symbol 1 is given by an equation, e.g., ki (1) =kc+Δki (1), where i e {0,1,2,3} corresponds to a particular alternative numerology. As shown in fig. 22 2200, the first synchronization signal is mapped on the time-frequency resource 2211. The second synchronization signal has four selectable time-

frequency resource locations

2221, 2222, 2223, and 2224. 2221. Each time-

frequency pattern

2222, 2223, and 2224 corresponds to a particular alternate OFDM numerology. The UE is configured to detect the second synchronization signal and then to replace OFDM numerology according to a time-frequency mapping mode identification of the second synchronization signal.

In some embodiments of several bits in an xSIB, the 2 bits in the xSIB transmitted on the physical channel are generated according to default OFDM numerology. In such an embodiment, the 2-bit value indicates alternative OFDM numerology.

In some embodiments, the one-bit information about whether the alternate OFDM numerology is the same as the default OFDM numerology is indicated by ID X or a sequence ID on the initial access signal or xPBCH. If the value of the bit indicates that the substitute OFDM numerology is different from the default OFDM numerology, the UE is configured to further decode 2 bits in the xPBCH (if the sequence ID is for a one bit indication) or the xSIB (if the PBCH carries a one bit information) sent with the default OFDM numerology, and the 2 bits indicate the substitute OFDM numerology. In some embodiments, the alternative numerology is UE-specifically configured via RRC signaling.

Fig. 23 2300 illustrates an example of default numerology on subbands in accordance with embodiments of the present disclosure. The embodiment of default numerology on subbands shown in fig. 23 2300 is for illustration only. One or more components illustrated in fig. 23 2300 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 23 2300, the default numerology on the subbands includes frequency resources 2305 for initial access signals and time resources 2310 for initial access signals.

In some embodiments, the UE is configured to receive certain broadcast and/or multicast transmissions using alternative OFDM numerology, e.g., xPDCCH and/or xPDSCH carrying information to be received by a group of UEs including the UE. The UE may be configured to use alternative OFDM numerology to transmit uplink access signals, e.g., xPRACH signals.

In some embodiments, the frame structure is designed for transmission of an initial access signal with a default OFDM digital configuration. The time slot in which the initial access signal is mapped is referred to as an initial access time slot (which may be a unit or subframe of time slot X). Wherein the time-frequency resources mapping the initial access signal utilize a default OFDM numerology configuration and one UE is configured to use the default OFDM numerology to detect the initial access signal. The time gap in which the initial access signal is not mapped is called a normal time gap. Alternative numerology is used in the normal time slots.

The time-frequency resources on which the default numerology is used may be explicitly or implicitly configured to the UE. In some embodiments, default numerology is used in at least those subbands on which the initial access signal is mapped across all time slots unless explicitly configured otherwise. As shown in fig. 23 2300, an initial access signal is transmitted in a period P in subframes (time slots) n and n+p of a Subband (SB) K. In this case, the UE may assume that default numerology is used in the SB K in all subframes unless otherwise configured.

Fig. 242400 illustrates an example of numerology on subbands in accordance with embodiments of the present disclosure. The embodiment of numerology on subbands shown in fig. 242400 is for illustration only. The embodiment of numerology for subbands shown in fig. 242400 is for illustration only. One or more components illustrated in fig. 242400 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 242400, numerology on subbands includes a time gap 2410 with an initial access signal and a time gap 2420 without an initial access signal. In some embodiments, default numerology is used in at least these time slots (system BW across configured NR carriers) over which the initial access signal is mapped, as shown in figure 24 2400.

In some embodiments, the plurality of time slots are configured with an initial access signal, and the other time slots are not configured with an initial access signal. As shown in fig. 24 2400, time slots n1, n2 (in some embodiments = n + P), (e.g., 2410) are configured with an initial access signal, and other time slots are not configured with an initial access signal 2420. In the time gap 2410 with the initial access signal, the UE is configured to detect the initial access signal using default numerology. In time gap 2420 where there is no initial access signal, the UE may be configured to receive/transmit signals using alternative numerology.

In some embodiments, in an initial access time slot, wherein the time-frequency resources of the initial access signal (including synchronization signal, xPBCH for MIB, ePBCH for SIB, etc.) are generated with a default OFDM numerology configuration, and the UE is configured to detect the initial access signal using the default OFDM numerology. In some embodiments, the initial access signal is mapped across all OFDM symbols in an initial access time slot. In some embodiments, the time frequency resources in the initial access time slot that are not used by the initial access signal may be used to transmit other signals, such as xPDCCH and xPDSCH.

Fig. 25a2500A illustrates an example of time-frequency resources for initial access according to an embodiment of the present disclosure. The embodiment of time-frequency resources for initial access shown in fig. 25a2500A is for illustration only. One or more components illustrated in fig. 25a2500A can be implemented in dedicated circuitry configured to perform the functions, or one or more components can be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 25a2500A, the time-frequency resources for initial access 2500A include non-initial access resources/signals 2510 and initial access resources/signals 2520. In some embodiments, all time-frequency resources in the initial access time slot (subframe) are structured with default OFDM numerology (so-called OFDM numerology a), as shown in fig. 25a2500 a. In fig. 25a2500a, all time-frequency resources and signals in an initial access subframe are constructed with OFDM numerology a, (non-initial access resources/signals 2510 and initial access resources/signals 2520). In this case, the UE is configured to detect the initial access signal according to the default OFDM numerology. The time-frequency resources 2510 in which the initial access signal is not mapped may be used for transmission of other signals, e.g., xPDCCH and xPDSCH.

Fig. 25b 2500b illustrates another example of time-frequency resources for initial access according to an embodiment of the present disclosure. The embodiment of time-frequency resources for initial access shown in fig. 25b 2500b is for illustration only. One or more components illustrated in fig. 25b 2500b can be implemented in dedicated circuitry configured to perform the functions, or one or more components can be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

As shown in fig. 25B 2500B, the time-frequency resources for initial access include resource elements 2540 and guard bands 2530 constructed in OFDM numerology B. In some embodiments, the subband signals in the initial access time slots (subframes) used to generate the initial access signals are constructed using default OFDM numerology, and the signals mapped outside the subbands may be constructed using alternate OFDM numerology (so-called OFDM numerology B), as shown in fig. 25B 2500B.

If the system bandwidth is larger than the subband size of the original access signal, other subbands may be used for transmission of other signals, e.g., xPDCCH and xPDSCH, and with alternative OFDM numerology. Guard band 2530 may be inserted between a sub-band of an initial access signal using default OFDM numerology and a sub-band for other signals using other OFDM numerology. The size of the guard band may be configured by an upper layer through an RRC message.

Fig. 25c 2500c illustrates example time-frequency resources for a physical downlink channel and a synchronization signal for initial access according to an embodiment of the present disclosure. The embodiment of time-frequency resources for a physical downlink channel shown in fig. 25c 2500c is for illustration only. One or more components illustrated in fig. 25c 2500c can be implemented in dedicated circuitry configured to perform the functions, or one or more components can be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure.

In some embodiments, to enable simultaneous reception of an initial access signal using default OFDM numerology and other signals using another OFDM numerology in an initial access subframe, a UE is configured to be capable of processing two different OFDM numerologies simultaneously.

In some embodiments, the time gap for transmitting the initial access signal is shorter than the entire duration of the initial access time gap, as shown in fig. 25c 2500 c. The initial access signal is transmitted in a subband in several consecutive OFDM symbols (in terms of default OFDM numerology) of an initial access time slot (subframe). All other time-frequency resources may be used for transmission with another OFDM numerology, e.g., other signals that replace OFDM numerology, e.g., xPDCCH and xPDSCH. The guard band 2530 is inserted only on OFDM symbols in which the initial access signal is transmitted.

Signaling may be introduced so that the UE may identify the set and/or number of time-frequency resources available for data and control information reception/transmission and OFDM numerology used in the initial access time slot (subframe); the UE is then configured for rate matching of the data/control signal transmissions in the access time slots (subframes) accordingly. In some embodiments, signaling that facilitates reception/transmission by one UE (or OFDM numerology that lets one UE know the region of the initial access signal and the time-frequency resources available) may be transmitted according to the following example scheme: on a System Information Block (SIB); on a Master Information Block (MIB) on xPBCH; encoding information jointly with other information, e.g., physical cell ID, number of OFDM symbols, initial access signal sequence; via RRC message; and via dynamic Downlink Control Information (DCI) signaling over xPDCH. In one example of dynamic DCI signaling, instead of DCI transmitted in OFDM numerology, the DCI indicates OFDM numerology for xPDSCH scheduled by one DCI.

In some embodiments, the UE may be configured with one or more alternative OFDM numerology configurations. The configuration may be signaled by an upper layer, for example, through an RRC message. The configuration may be UE-specific. The configuration may depend on UE performance or UE category and type. One example is that one UE is configured with different numerologies for PCell and SCell in case of carrier aggregation. In some embodiments, one digital configuration is for delay tolerant services and another digital configuration is for delay sensitive services.

In some embodiments, several bits in the RRC message explicitly indicate to one UE the value of the secondary OFDM digital configuration. The secondary OFDM digital configuration may be configured for one class of service and/or one component carrier. In some embodiments, the secondary OFDM numerology for one data transmission scheduled by the xPDCCH is indicated by several bits in the dynamic DCI signaling on the xPDCCH instead of OFDM numerology. In some embodiments, several bits in dynamic DCI signaling on xPDCCH indicate secondary OFDM numerology that should be used within a specific period. In some embodiments, the alternative and secondary numerology are configured for signal transmission other than the initial access signal, e.g., for transmission of xPDCCH, xPDSCH and x physical uplink shared channel (xPUSCH).

In some embodiments, each element in the resource grid for antenna port p is referred to as a resource element and is uniquely identified by an index pair (k, l) in a slot (time gap), where,

and->

Index in the frequency domain and in the time domain, respectively. The resource element (k, l) on the antenna port p corresponds to the complex value +.>

In some embodiments, the resource grid is defined for each configured OFDM numerology. In one example, an antenna port _p The resource elements (k, l) and corresponding resource grids are defined for default numerology. In another example, the resource elements (k ', l ') and corresponding resource grids on the antenna port p ' are defined for alternative numerology.

When the subcarrier spacing of the alternative numerology is a multiple of the subcarrier spacing of the default numerology (a=1, 2, 4, 8, …, 1/2, 1/4, 1/8, …), the ranges of indices (k, l) and (k ', l') are determined according to the default numerology,

and->

In one example, alternative numerology is defined by +.>

And->

And (5) determining. In another example, substitute numerology is defined by +.>

And

and (5) determining.

In such an example, the indexes from the two resource grids identify k, k+1, on the resource grid with the default numerology, k+α -1 corresponds to in the resource grid with the alternate numerology

In such an example, l in the resource grid with default numerology corresponds to l' =αl, αl+1,..alpha.l+α -1 in the resource grid with alternate numerology.

In some embodiments, the index from both resource grids identifies that k in the resource grid with the default numerology corresponds to k' =αk, αk+1, αk+α -1 in the resource grid with the alternate numerology. In such an embodiment, l in the resource grid with default numerology corresponds to l in the resource grid with alternate numerology

Fig. 26a2600A illustrates an example of a resource index according to an embodiment of the present disclosure. The embodiment of the resource index shown in fig. 26a2600a is for illustration only. One or more components illustrated in fig. 26a2600a may be implemented in dedicated circuitry configured to perform the functions described, or one or more components may be implemented by one or more processors that execute instructions to perform the functions described. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 26a2600A, the resource index includes a frequency (e.g., subcarrier) 2605A and a time (e.g., OFDM symbol) 2610A.

Fig. 26b 2600b illustrates another example of a resource index according to an embodiment of the present disclosure. The embodiment of the resource index shown in fig. 26b 2600b is for illustration only. One or more components illustrated in fig. 26b 2600b may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 26B 2600B, the resource index includes a frequency (e.g., subcarrier) 2605B and a time (e.g., OFDM symbol) 2610B.

Fig. 26a2600A and 26b 2600b illustrate resource indexes of two resource grids corresponding to default and alternative numerology according to the embodiment. In fig. 26A2600a and fig. 26B 2600b, α=1, 2, 4, 8, & gt (i.e., α Σ1). In particular, fig. 26a2600a illustrates the case where the default numerology has narrower subcarrier spacing than the alternate numerology. Similarly, fig. 26b 2600b illustrates the case where the default numerology has wider subcarrier spacing than the alternate numerology. In these figures 26a2600a and 26b 2600b, the shaded boxes correspond to resource elements in the resource grid for the default numerology and the white boxes correspond to resource elements in the resource grid for the alternate numerology.

The UE obtains the resource element index (k, l) from an initial access signal (e.g., synchronization channel) on the resource grid using default numerology. When the UE is also configured with alternative numerology, the UE obtains a time-frequency resource index (k ', l').

In some embodiments, in the case of subframe/slot aggregation (i.e., TTI spans more than one time slot X), the DMRS is mapped on a subset of subframes/slots (or time slots) in the PDSCH subframe/slot aggregation (aggregation of multiple time slots X) comprising multiple subframes/slots. For example, DMRS is mapped only in the first subframe/slot of the aggregation (time slot X).

Fig. 27 2700 illustrates Reference Signal (RS) mapping in subframe/slot aggregation in accordance with an embodiment of the present disclosure. The embodiment of RS mapping in the subframe shown in fig. 27 2700 is for illustration only. One or more components illustrated in fig. 27 2700 may be implemented in dedicated circuitry configured to perform the functions, or one or more components may be implemented by one or more processors that execute instructions to perform the functions. Other embodiments may be used without departing from the scope of this disclosure. As shown in fig. 27 2700, the RS map in subframe aggregation includes DL control 2701, multiple DL eMBB data 2710, gap1 2720, ul control 2730, and DMRS 2740.

As shown in fig. 27 2700, a frame structure in which DMRS is mapped only in one subframe/slot (time slot X) of an aggregation is illustrated. The UE is configured with an aggregation comprising N consecutive SFs/slots. The value of N is > =1. One example is for an eMBB service, a frame structure comprising a plurality of subframes/slots increases transmission efficiency with less overhead.

As shown in fig. 27 2700, SF/slot n includes DL Ctrl 2701 and DL data 2710. SF/slot n+N-1 includes DL data 2710, GAP1 2720 for DL and UL transmissions, and UL Ctrl 2730. SF/time slots n+1 through n+N-2 include DL data 2710. In some embodiments, DMRS 2740 for DL data transmission is mapped only in SF n. The transmission of DMRS 2740 may be configured by DL Ctrl 2701. The transmission of DMRS 2740 may be configured by an upper layer through some RRC messages. Mapping DMRS in SF/slot n in the subframe/slot aggregation enables decoding of DL data 2710 to begin as soon as possible. In some embodiments, DMRS 2740 maps in any one or any some of SF N-n+n-1.

The signaling may be designed such that the UE may identify the mapping of DMRS 2740 in case of subframe/slot (time slot) aggregation. The 1-bit signaling for the configuration of DMRS mapping is given in table 4.

TABLE 4 Table 4

DMRS mapping configuration	DMRS mapping method
		State 0	Mapping DMRS in all time slots (time slots)
State 1	Only at the first timeMapping DMRS in inter-slot (time slot)

An example of 2-bit signaling for configuration of DMRS mapping is given in table 5.

TABLE 5

In some embodiments, bn=1 indicates that DMRS is mapped in time slot n and bn=0 indicates that DMRS is not mapped in time slot n. In some embodiments, the bitmap is signaled separately in higher layers. In some embodiments, when DMRS is not mapped in time slot x, the corresponding DMRS RE is used for xPDSCH mapping.

In some embodiments, DMRS mapping information may be transmitted. In one example, DMRS mapping information may be transmitted via RRC signaling to inform the UE of a method of mapping DMRS in case of subframe/slot aggregation. In one example, the DMRS mapping information may be transmitted on System Information (SIB). In yet another example, DMRS mapping information may be transmitted in DL Ctrl via dynamic DCI signaling. In such an example, the information may include which one or more subframes/slots the DMRS maps to. In yet another example, the configuration of the DMRS mapping is UE-specific. The UE may derive the DMRS map based on certain information of the UE, e.g., UE id. In yet another example, the configuration of the DMRS mapping is service specific. The UE may derive the DMRS map based on the type of scheduled service. In yet another example, the configuration of the DMRS mapping is allocation specific. The UE may derive the DMRS map based on information of the scheduled allocation, e.g., the number of OFDM symbols of one allocation.

While the present disclosure has been described in terms of exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. The disclosure is intended to embrace such alterations and modifications that fall within the scope of the appended claims.

The methods described in the claims and/or specification according to various embodiments may be implemented in hardware, software, or a combination of hardware and software.

In a software implementation, a computer readable storage medium for storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium may be configured for execution by one or more processors within the electronic device. The at least one program may comprise instructions that cause an electronic device to perform a method according to various embodiments of the present disclosure as defined by the appended claims and/or disclosed herein.

Programs (software modules or software) may be stored in non-volatile memory, including random access memory and flash memory, read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), magnetic disk storage, compact disk-ROM (CD-ROM), digital Versatile Disks (DVD), or other types of optical storage or magnetic cassettes. Alternatively, any combination of some or all of the above may form a memory in which the program is stored. In addition, a plurality of such memories may be included in the electronic device.

In addition, the program may be stored in an attachable storage device that can access the electronic device through a communication network, such as the internet, an intranet, a Local Area Network (LAN), a Wide LAN (WLAN), and a Storage Area Network (SAN), or a combination thereof. Such a storage device may access an electronic device executing embodiments of the present disclosure via an external port. In addition, a separate storage device on the communication network may access the device performing the embodiments of the present disclosure.

In the above-described embodiments of the present disclosure, the components included in the present disclosure are expressed in singular or plural numbers according to the described embodiments. However, singular or plural forms are selected for convenience of description suitable for the present case, and various embodiments of the present disclosure are not limited to a single element or a plurality of elements thereof. In addition, any of the plurality of elements represented in the description may be configured as a single element or a single element in the description may be configured as a plurality of elements.

Although embodiments have been described in the detailed description of the present disclosure, the present disclosure may be modified in various forms without departing from the scope of the disclosure. Accordingly, the scope of the present disclosure should not be defined as limited to the embodiments, but should be defined by the appended claims and equivalents thereof.

Claims

1. A method performed by a User Equipment (UE) in a wireless communication system, the method comprising:

receiving configuration information of a bandwidth from a base station BS, the configuration information including:

information about frequency resources of bandwidth

Information about a second subcarrier spacing of the bandwidth; and

transmitting or receiving a signal based on the configuration information;

receiving an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) from the BS based on a default subcarrier spacing; and

information about a first subcarrier spacing for receiving the configuration information is obtained based on the access signal.

2. The method of claim 1, wherein the configuration information further comprises a length of a Cyclic Prefix (CP).

3. The method of claim 1, further comprising:

receiving a demodulation reference signal for a broadcast signal from a BS, the demodulation reference signal being scrambled with a Physical Cell Identity (PCID),

wherein the configuration information is received based on Radio Resource Control (RRC) signaling.

4. The method of claim 1, wherein the default subcarrier spacing is determined based on a frequency range.

5. The method of claim 1, further comprising:

an uplink access signal is transmitted to the BS based on a subcarrier spacing configured by a System Information Block (SIB).

6. The method of claim 1, wherein receiving the configuration information comprises:

when no access signal is received, configuration information about the resource is obtained.

7. A user equipment, UE, in a wireless communication system, the UE comprising:

a transceiver configured to receive the signal from the antenna,

information about frequency resources of bandwidth

Information about second subcarrier spacing of bandwidth

A signal is transmitted or received based on the configuration information,

a processor is operatively coupled with the transceiver, the processor configured to obtain information regarding a first subcarrier spacing for receiving the configuration information based on the access signal.

8. The UE of claim 7, wherein the configuration information further includes a length of a Cyclic Prefix (CP).

9. The UE of claim 7, wherein the transceiver is further configured to:

10. The UE of claim 7, wherein a default subcarrier spacing is determined based on a frequency range.

11. The UE of claim 7, wherein the transceiver is further configured to:

12. The UE of claim 7, wherein the processor is further configured to:

13. A base station, BS, in a wireless communication system, the BS comprising:

a transceiver configured to receive the signal from the antenna,

transmitting configuration information of bandwidth to User Equipment (UE), wherein the configuration information comprises:

information about frequency resources of bandwidth

Information about second subcarrier spacing of bandwidth

A signal is transmitted or received based on the configuration information,

transmitting an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) to the UE based on the default subcarrier spacing; and

a processor is operatively coupled with the transceiver, the processor configured to provide information regarding a first subcarrier spacing for transmitting the configuration information based on the access signal.

14. The BS of claim 13, wherein the configuration information further includes a length of a Cyclic Prefix (CP).

15. The BS of claim 13, wherein the transceiver is further configured to:

transmitting a demodulation reference signal for a broadcast signal to a UE, the demodulation reference signal scrambled with a Physical Cell Identity (PCID),

wherein the configuration information is sent based on Radio Resource Control (RRC) signaling.

16. The BS of claim 13, wherein the default subcarrier spacing is determined based on a frequency range.

17. The BS of claim 13, wherein the transceiver is further configured to:

an uplink access signal is received from a UE based on a subcarrier spacing configured by a System Information Block (SIB).

18. A method performed by a base station, BS, in a wireless communication system, the method comprising:

information about frequency resources of bandwidth

Information about second subcarrier spacing of bandwidth

A signal is transmitted or received based on the configuration information,

transmitting an access signal including a synchronization signal and a broadcast signal for a Master Information Block (MIB) to the UE based on the default subcarrier spacing, an

Information on a first subcarrier spacing for transmitting the configuration information is provided based on the access signal.