Modulation and Coding Scheme (MCS) that varies by link configuration

Abstract

Certain aspects of the present disclosure provide techniques for modulation and coding schemes (MCS) that vary depending on link configuration. A method that may be performed by a user equipment (UE) includes: receiving control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determining one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on the configuration of the communication link; and communicating via the communication link according to the one or more MCS parameters.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Application No. 16 / 905,493, filed on June 18, 2020, which claims priority to and the benefit of U.S. Provisional Application No. 62 / 864,316, filed on June 20, 2019, both of which are hereby assigned to the assignee of this application and are hereby expressly incorporated herein by reference as if fully set forth below and for all applicable purposes.

[0003] background

[0004] Public domain

[0005] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for configuring a modulation and coding scheme (MCS).

[0006] Related technical description

[0007] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access systems include Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name just a few.

[0008] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. New radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is an enhancement set of the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0009] However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

[0010] Overview

[0011] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes.Without limiting the scope of the disclosure as expressed by the following claims, some features will now be discussed briefly.

[0012] Certain aspects provide a method for wireless communication. The method generally includes: receiving control information indicating a modulation and coding scheme (MCS) index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determining one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and communicating via the communication link according to the one or more MCS parameters.

[0013] Certain aspects provide a method for wireless communication. The method generally includes: determining one or more MCS parameters to be used for a communication link; selecting an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; generating control information including the MCS index; and transmitting the control information to a user equipment (UE).

[0014] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes a memory, and one or more processors coupled to the memory, the one or more processors and the memory configured to: receive control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determine one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and communicate via the communication link based on the one or more MCS parameters.

[0015] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes a memory, and one or more processors coupled to the memory, the one or more processors and the memory being configured to: determine one or more MCS parameters to be used for a communication link; select an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; generate control information including the MCS index; and transmit the control information to a UE.

[0016] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: means for receiving control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; means for determining one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and means for communicating via the communication link based on the one or more MCS parameters.

[0017] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: means for determining one or more MCS parameters to be used for a communication link; means for selecting an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and means for generating control information including the MCS index and transmitting the control information to a UE.

[0018] Certain aspects provide a computer-readable medium having instructions stored thereon that cause an apparatus to: receive control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determine one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and communicate via the communication link based on the one or more MCS parameters.

[0019] Certain aspects provide a computer-readable medium having instructions stored thereon that cause an apparatus to: determine one or more MCS parameters to be used for a communication link; select an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; generate control information including the MCS index; and transmit the control information to a UE.

[0020] To achieve the foregoing and related ends, one or more aspects include features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are only indicative of several of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to understand in detail the manner in which the above-stated features of the present disclosure are used, a more particular description of the content briefly summarized above may be made with reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects.

[0023] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0024] Figure 2 is a flow diagram illustrating example operations for wireless communications by a user equipment (UE), in accordance with certain aspects of the present disclosure.

[0025] Figure 3 is a flow diagram illustrating example operations for wireless communications by a base station (BS), in accordance with certain aspects of the present disclosure.

[0026] Figure 4A and 4B Various tables indicating a mapping of MCS indices to MCS parameters for corresponding communication link configurations are illustrated in accordance with certain aspects of the present disclosure.

[0027] Figure 5A and 5B Illustrated is a table that maps MCS indices to MCS parameters for different link configurations in accordance with certain aspects of the present disclosure.

[0028] Figure 6 Illustrated are communications devices that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.

[0029] Figure 7 Illustrated are communications devices that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.

[0030] Figure 8 is a block diagram conceptually illustrating designs of an example BS and UE in accordance with certain aspects of the present disclosure.

[0031] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized in other aspects without specific recitation.

[0032] Detailed Description

[0033] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for configuring a modulation and coding scheme (MCS) in a manner that varies depending on the link configuration, as described in more detail herein. For example, an MCS index may refer to different MCS parameters to be used for a communication link depending on the configuration associated with the communication link. For example, a UE may interpret an MCS index from a BS in different ways depending on the configuration of the communication link (e.g., carrier frequency, parameter design, waveform type) to determine the MCS parameter to be used for the communication link. That is, the mapping of the MCS index to the MCS parameter may be different depending on the link configuration. Different mappings of the MCS index may be indicated by separate tables for different link configurations, or by one or more baseline tables, as described in more detail herein. For example, different tables for link configurations may be derived from one or more baseline tables based on predetermined rules specified in the standard. The implementation of MCS that varies depending on the link configuration as described herein allows the spectral efficiency of the communication link to increase monotonically with the increase of the MCS index value.

[0034] The following description provides an example of traffic burst perception in a communication system, but does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of the present disclosure. Various examples may appropriately omit, replace, or add various procedures or components. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted, or combined. Moreover, the features described with reference to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionalities, or structures and functionalities as supplements to the various aspects of the present disclosure set forth herein or in addition. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of the claims. The wording "exemplary" is used herein to mean "used as an example, instance, or explanation". Any aspect described as "exemplary" herein need not be interpreted as being superior to or superior to other aspects.

[0035] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, subcarrier, frequency channel, frequency modulation, subband, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, a 5G NR RAT network may be deployed.

[0036] Figure 1An example wireless communication network 100 is illustrated in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network).

[0037] like Figure 1 As illustrated in , the wireless communication network 100 may include several base stations (BSs) 110a-z (each also individually referred to herein as BS 110 or collectively referred to as BS 110) and other network entities. BS 110 may provide communication coverage for a particular geographic area (sometimes referred to as a "cell"), which may be stationary or mobile depending on the location of mobile BS 110. In some examples, BS 110 may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless communication network 100 via various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1 In the example shown in , BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. The BS may support one or more cells. BS 110 communicates with user equipment (UE) 120a-y (each also individually referred to herein as UE 120 or collectively referred to as UE 120) in the wireless communication network 100. UE 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.

[0038] According to certain aspects, BS 110 and UE 120 may be configured to select a modulation and coding scheme (MCS) that varies depending on the link configuration. Figure 1 As shown in , BS 110a includes an MCS manager. The MCS manager may be configured to: determine one or more MCS parameters to be used for a communication link; select an MCS index corresponding to the one or more MCS parameters, the mapping of the MCS index to the one or more MCS parameters depending on the configuration of the communication link; generate control information including the MCS index; and transmit the control information to UE 120. In some examples, the mapping of the MCS index to the one or more MCS parameters may be indicated by different MCS tables depending on the configuration of the communication link. Figure 1As shown in , UE 120a includes an MCS manager. The MCS manager may be configured to: receive control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determine one or more MCS parameters corresponding to the MCS index, the mapping of the MCS index to the one or more MCS parameters depending on the configuration of the communication link; and communicate via the communication link according to the one or more MCS parameters.

[0039] The wireless communication network 100 may also include a relay station (e.g., relay station 110r) (also referred to as a relay, etc.) that receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or that relays transmissions between UEs 120 to facilitate communication between the devices.

[0040] A network controller 130 may couple to a set of BSs 110 and provide coordination and control for the BSs 110. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (eg, directly or indirectly) via a wireless or wired backhaul.

[0041] Example Modulation and Coding Scheme (MCS) varies depending on link configuration

[0042] The 3rd Generation Partnership Project (3GPP) may support new deployment scenarios and use cases for spectrum above 52.6 GHz. In new spectrum involving higher carrier frequencies, several waveforms and methodologies may be considered for communication links. These may include enabling scalable parameter design, and flexible spectrum and bandwidth operations. For example, the target frequency range between 52.6 GHz and 114.25 GHz may enable several potential bands, carrier frequencies, and subcarrier spacings.

[0043] In some cases, determining modulation and coding scheme (MCS) parameters (such as modulation order and target code rate) may not take into account link configuration, such as orthogonal frequency division multiplexing (OFDM) frame parameter design (e.g., subcarrier spacing) and component carrier frequency. In the case of implementing a scalable link configuration, since the carrier frequency is modified, the communication link performance (e.g., spectral efficiency) may not increase monotonically with the increase of the MCS index.

[0044] Certain aspects of the present disclosure generally relate to link-configuration-specific MCS. For example, depending on the configuration of the communication link (e.g., carrier frequency, parameter design, waveform type), the MCS index may be interpreted in different ways to determine the MCS parameters to be used for the communication link. That is, the mapping of the MCS index to the MCS parameters may be different depending on the link configuration. The different mappings of the MCS index may be indicated by separate tables for different link configurations, or by one or more baseline tables. For example, different tables for link configurations may be derived from one or more baseline tables based on predetermined rules specified in the standard. The implementation of link-configuration-specific MCS as described herein allows the spectral efficiency of the communication link to increase monotonically with increasing MCS index values.

[0045] Figure 2 2 is a flow diagram illustrating example operations 200 for wireless communications, in accordance with certain aspects of the present disclosure. Operations 200 may be performed, for example, by a user equipment (UE), such as UE 120a in wireless communication network 100, for example.

[0046] Operation 200 may be implemented as a processor on one or more processors (e.g., Figure 8 In addition, signal transmission and reception by the UE in operation 200 may be performed by one or more antennas (e.g., Figure 8 In some aspects, signal transmission and / or reception by the UE may be achieved by obtaining and / or outputting signals via a bus interface of one or more processors (eg, controller / processor 880).

[0047] Operations 200 may begin at block 202 with the UE receiving control information (e.g., downlink control information (DCI)) indicating an MCS index corresponding to one or more MCS parameters to be used for a communication link, and determining, at block 204, one or more MCS parameters corresponding to the MCS index. In certain aspects, the mapping of the MCS index to the one or more MCS parameters may depend on a configuration of the communication link. The mapping may depend on a waveform type associated with the communication link, a parameter design associated with the communication link, and / or a carrier (e.g., a particular frequency band) to be used for communication. The parameter design may correspond to at least one of a frame structure, duration, or subcarrier spacing associated with the communication link. Examples of waveform types may include OFDM, discrete Fourier transform (DFT) spread OFDM, or a single carrier (SC) waveform, to name a few examples.

[0048] In one example, the mapping of the MCS index to one or more MCS parameters may be indicated by different MCS tables depending on the configuration of the communication link. As another example, the mapping of the MCS index to one or more MCS parameters is indicated by a table (e.g., a baseline table). The table may indicate different mappings of the MCS index to one or more MCS parameters depending on the configuration of the communication link. For example, different rows of the table may correspond to different MCS indexes depending on the configuration of the communication link. As another example, certain MCS indexes (e.g., rows) of the baseline table may be considered disabled (e.g., not applicable) depending on the link configuration, as described in more detail herein. In block 206, the UE may communicate via the communication link based on the one or more MCS parameters.

[0049] Figure 3 3 is a flow diagram illustrating example operations 300 for wireless communication in accordance with certain aspects of the present disclosure. Operations 300 may be performed, for example, by a network entity such as a BS (e.g., BS 110a in wireless communication network 100). Operations 300 may be operations performed by a BS that are complementary to operations 200 performed by a UE.

[0050] Operation 300 may be implemented as a processor on one or more processors (e.g., Figure 8 In addition, signal transmission and reception by the BS in operation 300 may be performed by one or more antennas (e.g., Figure 8 In some aspects, signal transmission and / or reception by the BS may be achieved by obtaining and / or outputting signals via a bus interface of one or more processors (eg, controller / processor 840).

[0051] Operations 300 may begin at block 302 with the network entity determining one or more MCS parameters to be used for a communication link and selecting an MCS index corresponding to the one or more MCS parameters at block 304. In certain aspects, the mapping of the MCS index to the one or more MCS parameters may depend on the configuration of the communication link. At block 306, the network entity may generate control information (e.g., DCI) including the MCS index and transmit the control information to the UE at block 308.

[0052] As described herein, the mapping of an MCS index to one or more MCS parameters may be indicated by different MCS tables depending on the configuration of the communication link. In other words, multiple MCS tables may be provided in the specification that vary by carrier, SCS, and / or waveform, such as with respect to Figure 4A and 4B Described in more detail.

[0053] Figure 4A and 4BVarious tables 402, 404 are illustrated that indicate mappings of MCS indices to MCS parameters for respective communication link configurations in accordance with certain aspects of the present disclosure. For example, table 402 indicates an MCS index (I MCS )(For example, I MCS 0-9) to MCS parameters (such as modulation order Q m The table 404 indicates the mapping of I specific to the second link configuration. MCS (For example, I MCS 0-7) to MCS parameters (such as modulation order 0 m 7, and spectral efficiency (SE'0-SE'7). In some cases, one or more MCS parameters (e.g., MO0-MO9, TCR0-TCR9, MO'0-MO'7, or TCR'0-TCR'7) in each modulation order or target code rate column of tables 402, 404 may indicate the same value. For example, MO0-MO5 may all indicate a modulation order of 2. Each link configuration may correspond to a link parameter, such as a specific frequency band associated with a communication link, a parameter design of the communication link (e.g., a frame format, duration, or subcarrier spacing (SCS)), or a waveform type, or any combination thereof.

[0054] In certain aspects, the mapping of MCS indices to one or more MCS parameters may be indicated by a baseline table. For example, the baseline table may be interpreted differently depending on the link configuration. That is, the table may indicate different mappings of MCS indices to one or more MCS parameters depending on the link configuration. As an example, different rows of the table may correspond to different MCS indices depending on the configuration of the communication link.

[0055] Figure 5A and 5B Tables 502, 504 are illustrated that map MCS indices to MCS parameters for different link configurations in accordance with certain aspects of the present disclosure. As illustrated, the MCS parameters may correspond to different MCS indices depending on the link configuration. For example, Figure 5A As illustrated in , the MCS parameters MO3, TCR3, and SE3 are mapped to MCS index 1 for the first link configuration (configuration #1), and are mapped to MCS index 2 for the second link configuration (configuration #2). In other words, certain rows of table 502 are disabled (e.g., not applicable) depending on the link configuration (e.g., carrier frequency, SCS, and / or waveform). As another example, the mapping of MCS parameters to MCS indexes may be swapped for different configurations. For example, Figure 5BAs illustrated in , the mapping of MCS index 2 and MCS index 4 may be swapped for the first and second configurations in an attempt to achieve a spectral efficiency that increases monotonically with respect to the MCS index.

[0056] In certain aspects, the UE may determine a configuration to be used to determine the MCS of the data channel based on the corresponding control channel of the data channel. In some aspects, the UE may determine the configuration to be used based on certain rules at the UE. In some aspects, the UE may receive an indication of the configuration to be used from the BS. For example, the indication of the configuration may be received via control signaling, radio resource control (RRC) signaling, or a media access control (MCS) control element (CE).

[0057] Figure 6 The description may include a method configured to perform operations for the techniques disclosed herein (such as Figure 2 6. The communication device 600 includes a processing system 602 coupled to a transceiver 608. The transceiver 608 is configured to transmit and receive signals (such as the various signals described herein) for the communication device 600 via an antenna 610. The processing system 602 may be configured to perform processing functions for the communication device 600, including processing signals received and / or to be transmitted by the communication device 600.

[0058] The processing system 602 includes a processor 604 coupled to a computer-readable medium / memory 612 via a bus 606. In some aspects, the computer-readable medium / memory 612 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 604, cause the processor 604 to perform Figure 2 , or other operations for performing the various techniques discussed herein. In some aspects, the computer-readable medium / memory 612 stores code 614 for receiving control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; code 616 for determining one or more MCS parameters corresponding to the MCS index; and code 618 for communicating via the communication link based on the one or more MCS parameters. In some aspects, the processor 604 has circuitry configured to implement the code stored in the computer-readable medium / memory 612. The processor 604 includes circuitry 620 for receiving control information indicating an MCS index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; circuitry 622 for determining one or more MCS parameters corresponding to the MCS index; and circuitry 624 for communicating via the communication link based on the one or more MCS parameters.

[0059] Figure 7 The description may include a method configured to perform operations for the techniques disclosed herein (such as Figure 3 700 includes various components (e.g., corresponding to means-plus-function components) of the communication device 700 and the operations illustrated in the foregoing. The communication device 700 includes a processing system 702 coupled to a transceiver 708. The transceiver 708 is configured to transmit and receive signals (such as various signals as described herein) for the communication device 700 via an antenna 710. The processing system 702 may be configured to perform processing functions for the communication device 700, including processing signals received and / or to be transmitted by the communication device 700.

[0060] The processing system 702 includes a processor 704 coupled to a computer-readable medium / memory 712 via a bus 706. In some aspects, the computer-readable medium / memory 712 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 704, cause the processor 704 to perform Figure 3 , or other operations for performing the various techniques discussed herein. In some aspects, the computer-readable medium / memory 712 stores code 714 for determining one or more MCS parameters to be used for a communication link; code 716 for selecting an MCS index corresponding to the one or more MCS parameters; code 718 for generating control information including the MCS index; and code 720 for transmitting the control information to the UE. In some aspects, the processor 704 has a circuit system configured to implement the code stored in the computer-readable medium / memory 712. The processor 704 includes a circuit system 722 for determining one or more MCS parameters to be used for a communication link; a circuit system 724 for selecting an MCS index corresponding to the one or more MCS parameters; a code 726 for generating control information including the MCS index; and a code 728 for transmitting the control information to the UE.

[0061] The techniques described herein may be used for various wireless communication technologies, such as NR (e.g., 5GNR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network may implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network may implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks can implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0062] The techniques described herein may be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations.

[0063] In 3GPP, the term "cell" may refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and BS, next-generation Node B (gNB or g B Node), access point (AP), distributed unit (DU), carrier, or transmission reception point (TRP) may be used interchangeably. The BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several thousand meters) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a residence, etc.). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS.

[0064] UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biometric sensor / device, wearable device (such as smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), transportation component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, or any other suitable device configured to communicate via wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide connectivity for or to a network (e.g., a wide area network (such as the Internet) or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0065] Figure 81 and 120a (eg, in the example embodiment of the present invention) that can be used to implement various aspects of the present disclosure. Figure 1 Example components of the wireless communication network 100).

[0066] At BS 110a, a transmit processor 820 may receive data from a data source 812 and control information from a controller / processor 840. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a PDCCH, a group common PDCCH (GC PDCCH), etc. The data may be for a PDSCH, etc. The processor 820 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The transmit processor 820 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 830 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide output symbol streams to modulators (MODs) 832a-832t. Each modulator 832 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 832a-832t may be transmitted via antennas 834a-834t, respectively.

[0067] At UE 120a, antennas 852a-852r may receive downlink signals from BS 110a and may provide received signals to demodulators (DEMODs) 854a-854r in the transceiver, respectively. Each demodulator 854 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 856 may obtain received symbols from all demodulators 854a-854r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 858 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to a data sink 860, and provide decoded control information to a controller / processor 880.

[0068] On the uplink, at the UE 120a, a transmit processor 864 may receive and process data from a data source 862 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 880 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 864 may also generate reference symbols for reference signals (e.g., a sounding reference signal (SRS)). The symbols from the transmit processor 864 may be precoded by a TX MIMO processor 866, if applicable, further processed by a demodulator in a transceiver 854a-854r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the BS 110a, the uplink signal from the UE 120a may be received by the antenna 834, processed by the modulator 832, detected by the MIMO detector 836, if applicable, and further processed by the receive processor 838 to obtain decoded data and control information sent by the UE 120a. The receive processor 838 may provide decoded data to a data sink 839 and decoded control information to a controller / processor 840 .

[0069] Memories 842 and 882 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 844 may schedule UEs for data transmission on the downlink and / or uplink.

[0070] The controller / processor 880 and / or other processors and modules at the UE 120a may perform or direct the execution of processes for the techniques described herein. Figure 8 As shown in FIG. 1 , in accordance with various aspects described herein, the controller / processor 840 of BS 110a has an MCS manager that can be configured to configure the MCS in a manner that varies depending on the link configuration. Figure 8 As shown in , according to various aspects described herein, the controller / processor 880 of UE 120a has an MCS manager that can be configured to configure the MCS in a manner that varies depending on the link configuration. Although shown as being at the controller / processor, other components of UE 120a and BS 110a can also be used to perform the operations described herein.

[0071] Example aspects

[0072] In a first aspect, a method for wireless communication by a user equipment (UE) comprises: receiving control information indicating a modulation and coding scheme (MCS) index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determining one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and communicating via the communication link according to the one or more MCS parameters.

[0073] In a second aspect, in combination with the first aspect, a mapping of an MCS index to one or more MCS parameters is indicated by different MCS tables depending on the configuration of the communication link.

[0074] In a third aspect, in combination with the second aspect, each of the MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

[0075] In a fourth aspect, in combination with one or more of the first to third aspects, a mapping of an MCS index to one or more MCS parameters is indicated by a table, and different rows of the table correspond to different MCS indices depending on a configuration of the communication link.

[0076] In a fifth aspect, in combination with one or more of the first to fourth aspects, a mapping of an MCS index to one or more MCS parameters is indicated by a table indicating different mappings of the MCS index to the one or more MCS parameters depending on a configuration of the communication link.

[0077] In a sixth aspect, in combination with one or more of the first to fifth aspects, the configuration of the communication link includes at least one of: a waveform type associated with the communication link, a parameter design associated with the communication link, or a carrier frequency to be used for communication.

[0078] In a seventh aspect, in combination with the sixth aspect, the parameter design associated with the communication link corresponds to at least one of a frame structure, duration, or subcarrier spacing associated with the communication link.

[0079] In an eighth aspect, in combination with one or more of the first to seventh aspects, the one or more MCS parameters include at least one of a modulation order, a target code rate, or a spectrum efficiency.

[0080] In a ninth aspect, a method for wireless communication by a network entity comprises: determining one or more modulation and coding scheme (MCS) parameters to be used for a communication link; selecting an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; generating control information including the MCS index; and transmitting the control information to a user equipment (UE).

[0081] In a tenth aspect, in combination with the ninth aspect, mapping of an MCS index to one or more MCS parameters is indicated by different MCS tables depending on the configuration of the communication link.

[0082] In an eleventh aspect, in combination with the tenth aspect, each of the MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

[0083] In a twelfth aspect, in combination with one or more of the ninth to eleventh aspects, a mapping of an MCS index to one or more MCS parameters is indicated by a table, and wherein different rows of the table correspond to different MCS indices depending on a configuration of the communication link.

[0084] In the thirteenth aspect, in combination with one or more of the ninth to twelfth aspects, the mapping of the MCS index to one or more MCS parameters is indicated by a table, which indicates different mappings of the MCS index to the one or more MCS parameters depending on the configuration of the communication link.

[0085] In a fourteenth aspect, in combination with one or more of aspects nine to thirteen, the configuration of the communication link comprises at least one of: a waveform type associated with the communication link, a parameter design associated with the communication link, or a carrier frequency to be used for communication.

[0086] In a fifteenth aspect, in combination with the fourteenth aspect, the parameter design associated with the communication link corresponds to at least one of a frame structure, duration, or subcarrier spacing associated with the communication link.

[0087] In the sixteenth aspect, in combination with one or more of the ninth to fifteenth aspects, the one or more MCS parameters include at least one of a modulation order, a target code rate, or a spectrum efficiency.

[0088] In a seventeenth aspect, an apparatus for wireless communication by a user equipment (UE) comprises: a memory; and one or more processors coupled to the memory, the one or more processors and the memory being configured to: receive control information indicating a modulation and coding scheme (MCS) index, the MCS index corresponding to one or more MCS parameters to be used for a communication link; determine one or more MCS parameters corresponding to the MCS index, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; and communicate via the communication link according to the one or more MCS parameters.

[0089] In an eighteenth aspect, in combination with the seventeenth aspect, mapping of an MCS index to one or more MCS parameters is indicated by different MCS tables depending on the configuration of the communication link.

[0090] In a nineteenth aspect, in combination with the eighteenth aspect, each of the MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

[0091] In the twentieth aspect, in combination with one or more of the seventeenth to nineteenth aspects, a mapping of an MCS index to one or more MCS parameters is indicated by a table, and wherein different rows of the table correspond to different MCS indices depending on a configuration of the communication link.

[0092] In the twenty-first aspect, in combination with one or more of aspects seventeen to twentieth, the mapping of the MCS index to one or more MCS parameters is indicated by a table, which indicates different mappings of the MCS index to the one or more MCS parameters depending on the configuration of the communication link.

[0093] In a twenty-second aspect, in combination with one or more of aspects seventeen to twenty-first, the configuration of the communication link includes at least one of: a waveform type associated with the communication link, a parameter design associated with the communication link, or a carrier frequency to be used for communication.

[0094] In a twenty-third aspect, in combination with the twenty-second aspect, a parameter design associated with the communication link corresponds to at least one of a frame structure, duration, or subcarrier spacing associated with the communication link.

[0095] In a twenty-fourth aspect, an apparatus for wireless communication by a network entity comprises: a memory; and one or more processors coupled to the memory, the one or more processors and the memory being configured to: determine one or more modulation and coding scheme (MCS) parameters to be used for a communication link; select an MCS index corresponding to the one or more MCS parameters, wherein a mapping of the MCS index to the one or more MCS parameters depends on a configuration of the communication link; generate control information including the MCS index; and transmit the control information to a user equipment (UE).

[0096] In a twenty-fifth aspect, in combination with the twenty-fourth aspect, mapping of an MCS index to one or more MCS parameters is indicated by different MCS tables depending on the configuration of the communication link.

[0097] In a twenty-sixth aspect, in combination with one or more of aspects twenty-four to twenty-fifth, each of the MCS tables comprises a plurality of MCS indexes, wherein the spectral efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

[0098] In the twenty-seventh aspect, in combination with one or more of aspects twenty-four to twenty-six, the mapping of the MCS index to one or more MCS parameters is indicated by a table, and wherein different rows of the table correspond to different MCS indices depending on the configuration of the communication link.

[0099] In aspect 28, in combination with one or more of aspects 24 to 27, a mapping of an MCS index to one or more MCS parameters is indicated by a table indicating different mappings of the MCS index to the one or more MCS parameters depending on a configuration of the communication link.

[0100] In a twenty-ninth aspect, in combination with one or more of aspects twenty-four to twenty-eight, the configuration of the communication link includes at least one of: a waveform type associated with the communication link, a parameter design associated with the communication link, or a carrier frequency to be used for communication.

[0101] In a thirtieth aspect, in combination with the twenty-ninth aspect, the parameter design associated with the communication link corresponds to at least one of a frame structure, duration, or subcarrier spacing associated with the communication link.

[0102] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also often referred to as frequency modulation, frequency bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain for OFDM and in the time domain for SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of subcarriers can be 15kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal fast Fourier transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth may also be divided into subbands. For example, a subband may cover 1.08 MHz (e.g., 6 RBs), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively. In LTE, the basic transmission time interval (TTI) or packet duration is a 1 ms subframe.

[0103] NR can utilize OFDM with CP on the uplink and downlink and includes support for half-duplex operation using TDD. In NR, a subframe is still 1ms, but the basic TTI is called a time slot. A subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16...time slots), depending on the subcarrier spacing. NR RB is 12 consecutive frequency subcarriers. NR can support a base subcarrier spacing of 15KHz, and other subcarrier spacings can be defined relative to the base subcarrier spacing, such as 30kHz, 60kHz, 120kHz, 240kHz, etc. The symbol and time slot lengths scale with the subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, the MIMO configuration in the DL can support up to 8 transmit antennas (multi-layer DL transmission with up to 8 streams) and up to 2 streams per UE. In some examples, multi-layer transmission of up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported using up to 8 serving cells.

[0104] In some examples, access to the air interface may be scheduled. A scheduling entity (e.g., BS) allocates resources for communication between some or all devices and equipment within its service area or cell. A scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, subordinate entities utilize resources allocated by the scheduling entity. A base station is not the only entity that can be used as a scheduling entity. In some examples, a UE may be used as a scheduling entity, and resources for one or more subordinate entities (e.g., one or more other UEs) may be scheduled, and other UEs may use resources scheduled by the UE for wireless communications. In some examples, a UE may act as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In a mesh network example, UEs may communicate directly with each other in addition to communicating with a scheduling entity.

[0105] In some examples, two or more subordinate entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh networks, and / or various other suitable applications. Generally, a sidelink signal may refer to a signal that is communicated from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some examples, the sidelink signal may be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum).

[0106] Each method disclosed herein includes one or more steps or actions for implementing the method. These method steps and / or actions can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be changed without departing from the scope of the claims.

[0107] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0108] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Also, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0109] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be easily understood by those skilled in the art, and the universal principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the various aspects shown herein, but should be granted the full scope consistent with the language of the claims, wherein the singular reference to the element is not intended to mean "there is and only one" (unless specifically stated) but "one or more". Unless otherwise specifically stated, the term "some / some" refers to one or more. The elements of the various aspects described throughout this disclosure are all structural and functional equivalents currently or hereafter known to those of ordinary skill in the art and are expressly incorporated herein by reference, and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be donated to the public, regardless of whether such disclosure is explicitly recorded in the claims. Any element of the claim should not be interpreted under the provisions of 35 U.S.C. § 112 (f), unless the element is explicitly stated using the phrase "device for..." or in the case of a method claim, the element is stated using the phrase "step for...".

[0110] The various operations of the methods described above may be performed by any suitable device capable of performing the corresponding functions. These devices may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs), or processors. Generally, where there are operations illustrated in the accompanying drawings, these operations may have corresponding paired device-plus-function components with similar numbers.

[0111] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0112] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user terminal 120 (see Figure 1 ), a user interface (e.g., a keypad, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art and will not be described further. The processor may be implemented with one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuit systems capable of executing software. Those skilled in the art will recognize how to best implement the functionality described with respect to the processing system, depending on the specific application and the overall design constraints imposed on the overall system.

[0113] If implemented in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Software should be broadly interpreted to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, which include any media that facilitate the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. As an example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon that is separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or additionally, a machine-readable medium or any part thereof may be integrated into a processor, such as a cache and / or a general register file, which may be the case. As an example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. Machine-readable media may be implemented in a computer program product.

[0114] A software module may include a single instruction, or many instructions, and may be distributed over several different code segments, distributed between different programs, and distributed across multiple storage media. A computer-readable medium may include several software modules. These software modules include instructions that cause a processing system to perform various functions when executed by an apparatus such as a processor. These software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. As an example, when a triggering event occurs, a software module may be loaded into a RAM from a hard drive. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When describing the functionality of a software module as described below, it will be understood that such functionality is implemented by the processor when the processor executes instructions from the software module.

[0115] Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared (IR), radio, and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Disks, where disks often reproduce data magnetically, and discs reproduce data optically with lasers. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Additionally, for other aspects, computer-readable media may include transient computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0116] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having stored (and / or encoded) thereon instructions that can be executed by one or more processors to perform the operations described herein, such as instructions for performing the operations described herein.

[0117] In addition, it should be appreciated that modules and / or other appropriate means for performing the methods and techniques described herein may be downloaded and / or otherwise obtained by a user terminal and / or base station where applicable. For example, such a device can be coupled to a server to facilitate the transfer of means for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage device (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.) so that once the storage device is coupled to or provided to a user terminal and / or base station, the device can obtain the various methods. In addition, any other suitable technology suitable for providing the methods and techniques described herein to a device may be utilized.

[0118] It will be understood that the claims are not limited to the precise configuration and components illustrated above. Various changes, substitutions and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a user equipment UE, comprising: receiving control information indicating a modulation and coding scheme (MCS) index corresponding to one or more MCS parameters to be used for a communication link; determining the one or more MCS parameters corresponding to the MCS index in one of different MCS tables defined for different configurations of the communication link, wherein the different configurations of the communication link include different waveform types associated with the communication link, wherein a mapping of the MCS index to the one or more MCS parameters is indicated by different MCS tables depending on the different configurations of the communication link, wherein one of the different MCS tables indicates a different mapping of the MCS index to the one or more MCS parameters depending on the different configurations of the communication link; and Communicating via the communication link is performed based on the one or more MCS parameters.

2. The method of claim 1, further comprising: An indication of a configuration among the different configurations is received via control signaling, radio resource control RRC signaling, or medium access control MAC-control element CE.

3. The method of claim 2, wherein: Each of the different MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

4. The method of claim 1, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table of the different MCS tables, and wherein different rows of the first MCS table correspond to different MCS indexes depending on a first configuration of the different configurations of the communication link.

5. The method of claim 1, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table among the different MCS tables, the first MCS table indicating a different mapping of the MCS index to the one or more MCS parameters depending on a first configuration among the different configurations of the communication link.

6. The method of claim 1, wherein: The different configurations of the communication link further include at least one of: a parameter design associated with the communication link, or a carrier frequency to be used for communication on the communication link, and wherein the parameter design associated with the communication link corresponds to at least one of a frame structure, a packet duration, or a subcarrier spacing associated with the communication link.

7. The method of claim 1, wherein: The one or more MCS parameters include at least one of a modulation order, a target code rate, or a spectrum efficiency.

8. A method for wireless communication by a network entity, comprising: determining one or more modulation and coding scheme (MCS) parameters to be used for the communication link; selecting an MCS index corresponding to the one or more MCS parameters in one of different MCS tables defined for different configurations of the communication link, wherein the different configurations of the communication link include different waveform types associated with the communication link, wherein a mapping of the MCS index to the one or more MCS parameters is indicated by different MCS tables depending on the different configurations of the communication link, wherein one of the different MCS tables indicates a different mapping of the MCS index to the one or more MCS parameters depending on the different configurations of the communication link; generating control information including the MCS index; and The control information is transmitted to a user equipment UE.

9. The method of claim 8, further comprising: An indication of a configuration among the different configurations is sent via control signaling, radio resource control RRC signaling, or medium access control MAC-control element CE.

10. The method of claim 9, wherein: Each of the different MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

11. The method of claim 8, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table of the different MCS tables, and wherein different rows of the first MCS table correspond to different MCS indexes depending on a first configuration of the different configurations of the communication link.

12. The method of claim 8, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table among the different MCS tables, the first MCS table indicating a different mapping of the MCS index to the one or more MCS parameters depending on a first configuration among the different configurations of the communication link.

13. The method of claim 8, wherein: The different configurations of the communication link further include at least one of: a parameter design associated with the communication link, or a carrier frequency to be used for communication on the communication link, and wherein the parameter design associated with the communication link corresponds to at least one of a frame structure, a packet duration, or a subcarrier spacing associated with the communication link.

14. The method of claim 8, wherein: The one or more MCS parameters include at least one of a modulation order, a target code rate, or a spectrum efficiency.

15. An apparatus for wireless communication by a user equipment UE, comprising: Memory; as well as one or more processors coupled to the memory, the one or more processors and the memory being configured to: receiving control information indicating a modulation and coding scheme (MCS) index corresponding to one or more MCS parameters to be used for a communication link; determining the one or more MCS parameters corresponding to the MCS index in one of different MCS tables defined for different configurations of the communication link, wherein the different configurations of the communication link include different waveform types associated with the communication link, wherein a mapping of the MCS index to the one or more MCS parameters is indicated by different MCS tables depending on the different configurations of the communication link, wherein one of the different MCS tables indicates a different mapping of the MCS index to the one or more MCS parameters depending on the different configurations of the communication link; and Communicating via the communication link is performed based on the one or more MCS parameters.

16. The device of claim 15, wherein: The one or more processors are further configured to receive an indication of a configuration of the different configurations via control signaling, radio resource control RRC signaling, or a medium access control MAC-control element CE.

17. The device of claim 16, wherein: Each of the different MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

18. The device of claim 15, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table of the different MCS tables, and wherein different rows of the first MCS table correspond to different MCS indexes depending on a first configuration of the different configurations of the communication link.

19. The device of claim 15, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table among the different MCS tables, the first MCS table indicating a different mapping of the MCS index to the one or more MCS parameters depending on a first configuration among the different configurations of the communication link.

20. The device of claim 15, wherein: The different configurations of the communication link further include at least one of: a parameter design associated with the communication link, or a carrier frequency to be used for communication on the communication link, and wherein the parameter design associated with the communication link corresponds to at least one of a frame structure, a packet duration, or a subcarrier spacing associated with the communication link.

21. An apparatus for wireless communication by a network entity, comprising: Memory; as well as one or more processors coupled to the memory, the one or more processors and the memory being configured to: determining one or more modulation and coding scheme (MCS) parameters to be used for the communication link; selecting an MCS index corresponding to the one or more MCS parameters in one of different MCS tables defined for different configurations of the communication link, wherein the different configurations of the communication link include different waveform types associated with the communication link, wherein a mapping of the MCS index to the one or more MCS parameters is indicated by different MCS tables depending on the different configurations of the communication link, wherein one of the different MCS tables indicates a different mapping of the MCS index to the one or more MCS parameters depending on the different configurations of the communication link; generating control information including the MCS index; and The control information is transmitted to a user equipment UE.

22. The device of claim 21, wherein: The one or more processors are further configured to send an indication of a configuration of the different configurations via control signaling, radio resource control RRC signaling, or a medium access control MAC-control element CE.

23. The device of claim 22, wherein: Each of the different MCS tables includes a plurality of MCS indexes, wherein the spectrum efficiency of the communication link increases monotonically as the values ​​of the plurality of MCS indexes increase.

24. The device of claim 21, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table of the different MCS tables, and wherein different rows of the first MCS table correspond to different MCS indexes depending on a first configuration of the different configurations of the communication link.

25. The apparatus of claim 21, wherein: The mapping of the MCS index to the one or more MCS parameters is further indicated by a first MCS table among the different MCS tables, the first MCS table indicating a different mapping of the MCS index to the one or more MCS parameters depending on a first configuration among the different configurations of the communication link.

26. The apparatus of claim 21, wherein: The different configurations of the communication link further include at least one of: a parameter design associated with the communication link, or a carrier frequency to be used for communication on the communication link, and wherein the parameter design associated with the communication link corresponds to at least one of a frame structure, a packet duration, or a subcarrier spacing associated with the communication link.

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