Patent Publication Number: US-2022225068-A1

Title: Wirelessly utilizable memory

Description:
PRIORITY INFORMATION 
     This application is a Continuation of U.S. application Ser. No. 16/988,971, filed Aug. 10, 2020, which is a Continuation of U.S. application Ser. No. 16/142,013, filed Sep. 26, 2018, which issued as U.S. Pat. No. 10,779,145 on Sep. 15, 2020, the contents of which are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates generally to semiconductor memory and methods, and more particularly, to apparatuses, systems, and methods for a wirelessly utilizable memory. 
     BACKGROUND 
     Memory resources are typically provided as internal, semiconductor, integrated circuits in computers or other electronic systems. There are many different types of memory, including volatile and non-volatile memory. Volatile memory can require power to maintain its data (e.g., host data, error data, etc.). Volatile memory can include random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), synchronous dynamic random access memory (SDRAM), and thyristor random access memory (TRAM), among other types. Non-volatile memory can provide persistent data by retaining stored data when not powered. Non-volatile memory can include NAND flash memory, NOR flash memory, and resistance variable memory, such as phase change random access memory (PCRAM) and resistive random access memory (RRAM), ferroelectric random access memory (FeRAM), and magnetoresistive random access memory (MRAM), such as spin torque transfer random access memory (STT RAM), among other types. 
     Electronic systems often include a number of processing resources (e.g., one or more processors), which may retrieve instructions from a suitable location and execute the instructions and/or store results of the executed instructions to a suitable location (e.g., the memory resources). A processor can include a number of functional units such as arithmetic logic unit (ALU) circuitry, floating point unit (FPU) circuitry, and a combinatorial logic block, for example, which can be used to execute instructions by performing logical operations such as AND, OR, NOT, NAND, NOR, and XOR, and invert (e.g., NOT) logical operations on data (e.g., one or more operands). For example, functional unit circuitry may be used to perform arithmetic operations such as addition, subtraction, multiplication, and division on operands via a number of operations. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram illustrating an example system including a wireless memory device in accordance with a number of embodiments of the present disclosure. 
         FIG. 2  is a diagram illustrating an example system including a wireless main memory in accordance with a number of embodiments of the present disclosure. 
         FIG. 3  is a schematic diagram illustrating an example network device including a processing resource, a transceiver resource, cache, and a read-only memory (ROM) in accordance with a number of embodiments of the present disclosure. 
         FIG. 4  is a schematic diagram illustrating an example apparatus including a transceiver resource, a controller, and a wirelessly utilizable memory resource in accordance with a number of embodiments of the present disclosure. 
         FIG. 5  is a diagram illustrating an example system including a number of network devices and a wireless main memory in accordance with a number of embodiments of the present disclosure. 
         FIG. 6  is a flow chart illustrating an example of a method for communication between wirelessly utilizable memory resource and remote processor in accordance with a number of embodiments of the present disclosure. 
         FIG. 7  is a flow chart illustrating an example of performing operations on a wirelessly utilizable memory resource in accordance with a number of embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure includes apparatuses, systems, and methods associated with a wirelessly utilizable memory. A device may include a processor that is wirelessly coupled to a memory array. The processor may execute instructions stored in, and wirelessly communicated from, the memory array. The processor may read data from or write data to the memory array via a wireless communication link (e.g., using resources of an ultra high frequency (UHF), super high frequency (SHF), or extremely high frequency (SHF), and/or tremendously high frequency (THF) band). In some examples, several devices may have a small amount of local memory (or no local memory) and may share a main memory array, and the various devices may communicate with one another via respective wireless communication links. Memory devices may include controllers, memory resources, and/or transceiver resources; they may be configured to use one or several communication protocols over licensed or shared frequency spectrum bands, directly (e.g., device-to-device) or indirectly (e.g., via a base station). 
     In a number of embodiments, an apparatus includes memory, a transceiver, and a controller coupled to the memory and the transceiver. The controller may be configured to communicate, via the transceiver resource, data stored in the memory via a communication link in an extremely high frequency (EHF) band. The apparatus may be configured to read data to and write data from a remote processor via the communication link in the EHF band. 
     A computing device may be utilized to perform various types of operations. To contribute to such performance, a faster processing resource and/or more memory resources may be combined on a particular computing device. However, a cost associated with the computing device implemented with the processing resource and/or the memory resources may outweigh benefits obtainable from utilizing the computing device, especially when a function the computing device is designed to perform is substantially simple, for example, as compared to a bandwidth at which the processing resource along with the corresponding memory resources may need to provide to perform the function. 
     As an example, consider a plant watering device that automatically waters plants when needed. In this example, the plant watering device may need a sensing module to detect, for example, a humidity of the plants, a communication module (e.g., transceiver resources), controlling module that controls water valves, a processing resource (e.g., Central Processing Unit (CPU)) that controls those modules, and/or memory resources to store data associated with those modules. The cost associated with the plant watering device may substantially outweigh the benefits from utilizing the plant watering device that performs comparatively simple functions, which would make utilization of such devices impractical. 
     Accordingly, embodiments of the present disclosure provide various benefits such as a reduced design complexity, less power, and/or reducing cost associated with network devices. Further, while maintaining the reduced design complexity and less power consumption, embodiments of the present disclosure can also provide competitive approaches for communicating among the network devices, in which network devices may communicate with each other as if other network devices were local (e.g., physically coupled) to each other. 
     A computing device can be a network device. As used herein, “network device” refers to a computing device that is configured to transmit and/or receive signals (e.g., data) and to process the received signals. For example, network devices may include data processing equipment such as a computer, cellular phone, Internet-of-Things (IoT), personal digital assistant, tablet devices, an access point (AP), and/or data transfer devices such as network switches, routers, controllers, although embodiments are not so limited. 
     The figures herein follow a numbering convention in which the first digit or digits of a reference number correspond to the figure number and the remaining digits identify an element or component in the figure. Similar elements or components between different figures may be identified by the use of similar digits. For example, 102 may reference element “ 02 ” in  FIG. 1 , and a similar element may be referenced as  302  in  FIG. 3 . 
       FIG. 1  is a diagram illustrating an example system  100  including a wireless memory device  104  in accordance with a number of embodiments of the present disclosure. The system  100  include a network device (e.g., network devices  102 ) and a wireless memory device  104 . As used herein, “a wireless memory device” refers to a memory device that can be wirelessly coupled to an entity utilizing the wireless memory device such that the wireless memory device is utilized by the entity via a wireless communication technology. 
     As illustrated in  FIG. 1 , the system  100  includes a plurality of network devices  102 . By way of example and not by way of limitation, at least a portion of the plurality of network devices  102  may be IoT enabled devices. As used herein, “IoT enabled devices” include physical devices, vehicles, home appliances, and other devices embedded with electronics, software, sensors, actuators, and/or network connectivity which enables such devices to connect to a network and/or exchange data. Examples of IoT enabled devices include wearable technologies, smart home devices, intelligent shopping systems, and monitoring devices, among other cyber-physical systems. In addition, the plurality of network devices  102  may include a processing resource to execute instruction such as instruction corresponding to an operating system to provide common services for applications running on the computing system. Although  FIG. 1  illustrated a plurality of network devices  102 , embodiments are not so limited. As an example, the system  100  may include an individual network device  102  that communicates with the wireless memory device  104 . 
     As shown in  FIG. 1 , at least one of the network devices  102 , or a processing resource thereof, may be wirelessly coupled to the wireless memory device  104  and may be configured to communicate with the wireless memory device  104  via a communication link  106 . In some embodiments, the communication link  106  may be a part of a device-to-device communication technology operable in an extremely high frequency (EHF) band. As used herein, the device-to-device communication refers to a wireless communication performed directly between a transmitting device and a receiving device, as compared to a wireless communication such as the cellular telecommunication (e.g., communication via a base station) and/or those communications, in which network devices communicate with each other by firstly going through an intermediate network device (e.g., base station and/or AP). In some embodiments. the device-to-device communication may rely on existing infrastructures (e.g., network entity such as a base station); therefore, can be an infrastructure mode. For example, as described herein, the device-to-device communication whose transmission timing is scheduled by a network entity such as a base station can be an infrastructure mode. In some embodiments, the receiving and transmitting devices may communicate in the absent of the existing infrastructures; therefore, can be an ad-hoc mode. As used herein, “an infrastructure mode” refers to an 802.11 networking framework in which devices communicate with each other by first going through an intermediary device such as an AP. As used herein, “ad-hoc mode” refers to an 802-11 networking framework in which devices communicate with each other without the use of intermediary devices such as an AP. The term “ad-hoc mode” can also be referred to as “peer-to-peer mode” or “independent Basic Service Set (IBSS).” 
     As used herein, the cellular telecommunication refers to a wireless communication performed indirectly between a transmitting device and a receiving device via a base station, as compared to those types of wireless communications including a device-to-device communication. Cellular telecommunications may be those that use resources of a frequency spectrum restricted or regulated by a governmental entity. License frequency spectrum resources may be scheduled for use or access by certain devices, and may be inaccessible to other devices. By contrast, resources of shared or unlicensed frequency spectrum may be open and available for use by many devices without the necessity of a governmental license. Allocating licensed and shared or unlicensed frequency resources may present different technical challenges. In the case of licensed frequency spectrum, resources may be controlled by a central entity, such as a base station or entity within a core network. While devices using resources of shared or unlicensed frequency spectrum may contend for access—e.g., one device may wait until a communication channel is clear or unused before transmitting on that channel. Sharing resources may allow for broader utilization at the expense of guaranteed access. 
     Techniques described herein may account for, or may use, both licensed and unlicensed frequency spectrum. In some communication schemes, device-to-device communication may occur on resources of a licensed frequency spectrum, and such communications may be scheduled by a network entity (e.g., a base station). Such schemes may include certain 3GPP-developed protocols, like Long-Term Evolution (LTE) or New Radio (NR). A communication link (e.g., communication link  106 ) between devices (e.g. user equipments (UEs)) in such schemes may be referred to as sidelink (e.g., device-to-device communication link), while a communication link from a base station to a device may be referred to as a downlink and a communication from a device to a base station may be referred to as an uplink. 
     In other schemes, device-to-device communication may occur on resources of unlicensed frequency spectrum, and devices may contend for access the communication channel or medium. Such schemes may include WiFi or MulteFire. Hybrid schemes, including licensed-assisted access (LAA) may also be employed. 
     As used herein, an EHF band refers to a band of radio frequencies in an electromagnetic spectrum ranging from 30 to 300 gigahertz (GHz) as designated by the International Telecommunication Union (ITU), and as described further herein. Ranges of radio frequencies as designated by the ITU can include extremely low frequency (ELF) band ranging from 3 to 30 Hz, super low frequency (SLF) band ranging from 30 Hz to 300 Hz, ultra low frequency (ULF) band ranging from 300 Hz to 3 kilohertz (kHz), very low frequency (VLF) band ranging from 3 to 30 kHz, low frequency (LF) band ranging from 30 kHz to 300 kHz, medium frequency (MF) band ranging from 300 kHz to 3 megahertz (MHz), high frequency (HF) band ranging from 3 MHz to 30 MHz, very high frequency (VHF) band ranging from 30 MHz to 300 MHz, ultra high frequency (UHF) band ranging from 300 MHz to 3 GHz, super high frequency (SHF) band ranging from 3 GHz to 30 GHz, extremely high frequency (EHF) band ranging from 30 GHz to 300 GHz, and tremendously high frequency (THF) band ranging from 0.3 to 3 terahertz (THz). 
     The communication  106  operable in the EHF band can include a fifth generation (5G) technology or later technology. 5G technology may be designed to utilize a higher frequency portion of the wireless spectrum, including an EHF band (e.g., ranging from 30 to 300 GHz as designated by the ITU). 5G may refer to protocols and specifications like New Radio (NR) developed by 3GPP. 
     A number of embodiments of the present disclosure can provide various benefits by utilizing a network communication that is operable in a number of frequency bands including a higher frequency portion (e.g., EHF) of the wireless spectrum, as compared to those network communication technologies that utilizes a lower frequency portion of the wireless spectrum only. As an example, the EHF bands of 5G technology may enable data to be transferred more rapidly than technologies (e.g., including previous generations of cellular telecommunication technologies) using lower frequency bands only. For example, a 5G network is estimated to have transfer speeds up to hundreds of times faster than a 4G network, which may enable data transfer rates in a range of tens of megabits per second (MB/s) to tens of GB/s for tens of thousands of users at a time (e.g., in a memory pool, as described herein) by providing a high bandwidth. For example, a 5G network provides faster transfer rates than the 802.11-based network such as WiFi that operate on unlicensed 2.4 GHz radio frequency band (e.g., Ultra High Frequency (UHF) band). Accordingly, a number of embodiments can enable the wireless memory device  104  to be used at a high transfer speed as if the wireless memory device  104  were wired to the network devices  102 . 
     A number of embodiments are not limited to a particular type of a wireless communication (e.g., communication  106 ). For example, the various types of communication technologies the network devices  102  and/or the wireless memory device  104  can utilize may include, for example, cellular telecommunication including different generations of broadband cellular telecommunication technologies, device-to-device to communication including Bluetooth, Zigbee, and/or 5G (e.g., device-to-device communication operable in an EHF band), and/or other wireless communication utilizing an intermediary device (e.g., WiFi utilizing an AP). 
     In a number of embodiments, the wireless memory device  104  may be utilized, by the network devices  102 , for various purposes. In some embodiments, the wireless memory device  104  can serve as a wireless main memory for the network devices  102 , which may improve practicability of the network devices  102 , for example, as IoT enabled devices, as described further herein (e.g., in connection with  FIG. 2 ). 
       FIG. 2  is a diagram illustrating an example system  200  for a wireless main memory  204  in accordance with a number of embodiments of the present disclosure. As shown in  FIG. 2 , the system  200  includes a network device  202  and a wireless main memory  204  of the network device  202 . The network device  202  and the wireless main memory  204  are analogous to one of the network devices  102  and the wireless memory device  104 , respectively, as described in connection with  FIG. 1 . The network device  204  is wirelessly coupled to the wireless main memory  204  via a communication technology. 
     The wireless main memory  204  can serve as a main memory for the network device  202 . As used herein, “a main memory” refers to memory that is directly accessible by a host. As an example, the main memory may store data that can be directly manipulated by a host processor. 
     The wireless main memory  204  may provide functions that would have been provided by an internal main memory (e.g., a main memory internal to a network device) while being external to the network device  202 . For example, those data and/or instructions that would have been communicated between a processing resource (e.g., processing resource  214 ) and the internal main memories may be communicated via a communication link  206 . As such, the network device  202  may not include, in addition to the wireless main memory  204 , a main memory internally (e.g., local main memory). As used herein, the terms “processing resource” and “processor” are used interchangeably herein and can have the same meaning, as appropriate to the context. For example, the term “remote processor” can indicate a processor in the network device  202  that can wirelessly communicate with the wireless main memory  204 . 
     Having a main memory (e.g., main memory  204 ) external to and wirelessly coupled to a network device (e.g., network device  202 ) can provide benefits such as reducing design complexity of the network device  202 , reducing power consumption for the network device  202 , and/or reducing cost associated with the network device  202 . For example, implementing a main memory within each of the network devices may cause an increase in a design complexity and a manufacturing cost, and/or a shortened battery life due to a power exhaustion by an internal main memory, which may prevent practical implementation of those network devices when the cost associated with the network devices outweighs benefits obtainable from utilizing the network devices. As such, a number of embodiments can offer a practical implementation of a system (e.g., system  200 ) by eliminating a need to have a main memory internal to the network device, which can reduce a cost associated with the network device. 
     The wireless main memory  204  can include a memory resource  208  and a controller  210 . The memory resource  208  may store data that can be directly accessible by the processing resource  214  via the communication link  206 . The memory resource  208  may include a number of volatile memory devices formed and/or operable as DRAM, among other types of volatile memory devices. However, embodiments are not so limited. For example, the memory resource  212  of  FIG. 2  may include a plurality of memory devices such as a number of volatile memory devices formed and/or operable as RAM, DRAM, SRAM, SDRAM, and/or TRAM, among other types of volatile memory devices. For example, the memory resource  212  of  FIG. 2  may include a number of non-volatile memory devices formed and/or operable as PCRAM, RRAM, FeRAM, MRAM, and/or STT RAM, phase change memory, 3DXPoint, and/or Flash memory devices, among other types of non-volatile memory devices. As used herein, the terms “memory resource” and “memory” are used interchangeably herein and can have the same meaning, as appropriate to the context. 
     The controller may be configured to, responsive to a command received from the processing resource  214 , corresponding data stored in the memory resource  208  with the processing resource  214  via the communication link  206  (e.g., a device-to-device communication that is operable in the EHF band). The command may be in the form of read and/or write commands, which may be referred to as load and store commands respectively. Further details associated with the memory resource  208  and the controller  210  are described in connection with  FIG. 4 . 
     As shown in  FIG. 2 , the processing resource  214  (e.g., CPU) may be wirelessly coupled to a memory resource such as the main memory  204  (e.g., via a communication link  206 ). The processing resource  214  may be configured to communicate with the memory resource  208  via various communication technologies such as a device-to-device communication technology that is operable in the EHF band (e.g., device-to-device communication using the 5G technology). However, embodiments are not limited to a particular communication technology via which the processing resource  214  can be configured to communicate. As an example, the communication technology that can be utilized by the processing resource  214  may include a device-to-device communication (e.g., 5G, Bluetooth, Zigbee, etc.), a cellular telecommunication (e.g., 0-5G), and/or other types of wireless network communications such as WiFi (e.g., 802.11-based network communication). 
     In addition to the EHF band, the communication technology of the communication link  206  can also be operable in other frequency bands such as the SHF band and the UHF band. As an example, the communication technology of the communication link  206  can operate in a frequency band below 2 GHz (e.g., low 5G frequencies) and/or in a frequency band between 2 GHz and 6 GHz (e.g., medium 5G frequencies) in addition to a frequency band above 6 GHz (e.g., high 5G frequencies). Further details of a number of frequency bands (e.g., below 6 GHz) in which the 5G technology can operate are defined in Release 15 of the Third Generation Partnership Project (3GPP) as New Radio (NR) Frequency Range  1  (FR 1 ), as shown in Table 1. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 5G operating bands for FR1 
               
            
           
           
               
               
               
               
            
               
                   
                 NR 
                 Frequency Band 
                 Duplex 
               
               
                   
                 Operating Band 
                 (MHz) 
                 Mode 
               
               
                   
                   
               
               
                   
                 n1 
                 1920-1980; 2110-2170 
                 FDD 
               
               
                   
                 n2 
                 1850-1910; 1930-1990 
                 FDD 
               
               
                   
                 n3 
                 1710-1785; 1805-1880 
                 FDD 
               
               
                   
                 n5 
                 824-849; 869-894 
                 FDD 
               
               
                   
                 n7 
                 2500-2570; 2620-2690 
                 FDD 
               
               
                   
                 n8 
                 880-915; 925-960 
                 FDD 
               
               
                   
                 n20 
                 791-821; 832-862 
                 FDD 
               
               
                   
                 n28 
                 703-748; 758-803 
                 FDD 
               
               
                   
                 n38 
                 2570-2620 
                 TDD 
               
               
                   
                 n41 
                 2496-2690 
                 TDD 
               
               
                   
                 n50 
                 1432-1517 
                 TDD 
               
               
                   
                 n51 
                 1427-1432 
                 TDD 
               
               
                   
                 n66 
                 1710-1780; 2110-2200 
                 FDD 
               
               
                   
                 n70 
                 1695-1710; 1995-2020 
                 FDD 
               
               
                   
                 n71 
                 617-652; 663-698 
                 FDD 
               
               
                   
                 n74 
                 1427-1470; 1475-1518 
                 FDD 
               
               
                   
                 n75 
                 1432-1517 
                 SDL 
               
               
                   
                 n76 
                 1427-1432 
                 SDL 
               
               
                   
                 n78 
                 3300-3800 
                 TDD 
               
               
                   
                 n77 
                 3300-4200 
                 TDD 
               
               
                   
                 n79 
                 4400-5000 
                 TDD 
               
               
                   
                 n80 
                 1710-1785 
                 SUL 
               
               
                   
                 n81 
                 880-915 
                 SUL 
               
               
                   
                 n82 
                 832-862 
                 SUL 
               
               
                   
                 n83 
                 703-748 
                 SUL 
               
               
                   
                 n84 
                 1920-1980 
                 SUL 
               
               
                   
                   
               
            
           
         
       
     
     Further, details of a number of frequency bands (e.g., above 6 GHz) in which the 5G technology can operate are defined in Release 15 of the 3GPP as NR Frequency Range  2  (FR 2 ), as shown in Table 2. 
     
       
         
           
               
             
               
                 TABLE 2 
               
             
            
               
                   
               
               
                 5G operating bands for FR2 
               
            
           
           
               
               
               
               
            
               
                   
                 NR 
                 FREQUENCY BAND 
                 Duplex 
               
               
                   
                 Operating Band 
                 (MHz) 
                 Mode 
               
               
                   
                   
               
               
                   
                 n257 
                 26500-29500 
                 TDD 
               
               
                   
                 n258 
                 24250-27500 
                 TDD 
               
               
                   
                 n260 
                 37000-40000 
                 TDD 
               
               
                   
                   
               
            
           
         
       
     
     In some embodiments, a number of frequency bands in which a communication technology (e.g., device-to-device communication and/or cellular telecommunication using 5G technology) utilized by the processing resource  214  may be operable can further include the THF band in addition to those frequency bands such as the SHF, UHF, and EHF bands. 
     As used herein, FDD stands for frequency division duplex, TDD stands for time division duplex, SUL stands for supplementary uplink, and SDL stands for supplementary downlink. FDD and TDD are each a particular type of a duplex communication system. As used herein, a duplex communication system refers to a point-to point system having two connected parties and/or devices that can communicate with one another in both directions. TDD refers to duplex communication links where uplink is separated from downlink by the allocation of different time slots in the same frequency band. FDD refers to a duplex communication system, in which a transmitter and receiver operate at different frequency bands. SUL/SDL refer to a point-to-point communication system having two connected parties and/or devices that can communicate with one another in a unilateral direction (e.g., either via an uplink or a downlink, but not both). 
     The communication technology of the communication link  206  may be selectively operable in one or more of low, medium, and/or high 5G frequency bands based on characteristics of, for example, the communication link  206 . As an example, the low 5G frequency may be utilized in some use cases (e.g., enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC), massive machine-type communications (mMTC)), in which extremely wide area needs to be covered by the 5G technology for the communication link  206 . As an example, the medium 5G frequency may be utilized in some use cases (e.g., eMBB, URLLC, mMTC), in which higher data rate than that of the low 5G frequencies is desired for the communication link  206 . As an example, the high 5G frequency may be utilized in some use cases (e.g., eMBB), in which extremely high data rate is desired for the communication link  206 . 
     As used herein, eMBB, URLLC, mMTC each refers to one of three categories of which the ITU has defined as services that the 5G technology can provide. As defined by the ITU, eMBB aims to meet the people&#39;s demand for an increasingly digital lifestyle and focuses on services that have high requirements for bandwidth, such as high definition (HD) videos, virtual reality (VR), and augmented reality (AR). As defined by the ITU, URLLC aims to meet expectations for the demanding digital industry and focuses on latency-sensitive services, such as assisted and automated driving, and remote management. As defined by the ITU, mMTC aims to meet demands for a further developed digital society and focuses on services that include high requirements for connection density, such as smart city and smart agriculture. 
     As used herein, a channel bandwidth refers to a frequency range occupied by data and/or instructions when being transmitted (e.g., by an individual carrier) over a particular frequency band. As an example, a channel bandwidth of 100 MHz may indicate a frequency range from 3700 MHZ to 3800 MHZ, which can be occupied by data and/or instructions when being transmitted over n77 frequency band, as shown in Table 1. As indicated in Release 15 of the 3GPP, a number of different channel bandwidth such as a channel bandwidth equal to or greater than 50 MHz (e.g., 50 MHz, 100 MHz, 200 MHz, and/or 400 Mhz) may be utilized for the 5G technology. 
       FIG. 3  is a schematic diagram illustrating an example network device  302  including a processing resource  314 , a transceiver resource  316 , a cache  312 , and a ROM  313  in accordance with a number of embodiments of the present disclosure. The example network device  302  may analogous to the network device  102  and  202  (e.g., IoT device). As described in connection with  FIG. 2 , the network device  302  may be wirelessly coupled to a main memory and utilize, without having an internal main memory, the wireless main memory as if the wireless main memory were local (e.g., physically coupled) to the network device  302 . 
     The network device  302  may include a cache  312 . The cache  312  may include memory (e.g., memory cells) arranged, for example, in a number of bank groups, banks, bank sections, subarrays, and/or rows of a number of memory devices. The cache may be SRAM, although embodiments are not so limited. The cache  312  stores copy of data stored in a wireless main memory. 
     The network device  302  may include a ROM  313  that stores instructions executable by the processing resource  314 . The ROM  313  may store a set of basic instructions directing the processing resource  314  for performing various functions. As an example, the set of basic instructions executed by the processing resource  314  may cause the processing resource  314  to utilize a transceiver resource  316  to communicate with a wireless main memory, retrieve data and/or a set of instructions from the wireless main memory, and/or execute the set of instructions retrieved from the wireless main memory, although embodiments are not so limited. 
     A processing resource  314  may be a CPU of the network device  302 . As a CPU of the network device  302 , the processing resource  314  may be configured to access and retrieve data and/or instructions stored in a wireless main memory (e.g., wireless memory device  104 ), execute the instructions retrieved from the wireless main memory, communicate data (e.g., data obtained as a result of the execution of the retrieved instructions) with the wireless main memory and/or other devices. As such, the network device  302  may not include a local main memory (e.g., main memory located internal to and/or wired to the processing resource  314 ). 
     In some embodiments, the processing resource  314  may be configured to enter periodically into different statuses. As an example, the processing resource  314  may be configured to enter periodically into a first status (e.g., active mode) to enable a wireless communication between the processing resource  314  and a wireless main memory (e.g., wireless memory device  104 ) during the first status. While not being in the periodic first status, the processing resource  314  may be configured to enter into a second status (e.g., sleep mode) such that the processing resource  314  and/or the network device  302  may consume less power than it would have consumed while being in the first status. For example, a nominal power consumption of the second status is lower than a nominal power consumption of the first status. Accordingly, the network device  302  such as the IoT enabled devices may provide a mechanism that prolong a battery life of the IoT enabled devices by reducing unnecessary power consumption. Ordinal numbers such as first and second and/or primary and secondary are used herein to assist in correlating and/or distinguishing between similar and/or selectably coupled components (e.g., portions of data, and/or data caches, etc.) and are not used to indicate a particular ordering and/or relationship between the components, unless the context clearly dictates otherwise (e.g., by using terms such as adjacent, etc.). 
     Although not shown in  FIG. 3 , the cache  312  and ROM  313  may be coupled to the processing resource  314 , for example, via a bus for communicating data between the cache  312  and/or ROM  313  and the processing resource  314 . For example, the processing resource  314  may request particular data values stored in the cache  312  and/or ROM  313  and the data values may be retrieved from the cache  312  and/or ROM  313  to the processing resource  314  via the bus. For example, the processing resource  314  may receive instructions retrieved from a wireless memory resource (not shown) and send those instructions to the cache  312  via the bus. 
     The processing resource  314  may be coupled to a transceiver resource  316  via bus  315 . The transceiver resource  316  may be configured to wirelessly share data with other devices, and the processing resource  314  may be configured to communicate with a wireless main memory via the transceiver resource  316 . As used herein, the terms “transceiver resource” and “transceiver” are used interchangeably herein and can have the same meaning, as appropriate to the context. 
     As used herein, a “transceiver” may be referred to as a device including both a transmitter and a receiver. In a number of embodiments, the transceiver resource  316  may be and/or include a number of radio frequency (RF) transceivers. The transmitter and receiver may, in a number of embodiments, be combined and/or share common circuitry. In a number of embodiments, no circuitry may be common between the transmitter and receiver and the device may be termed a transmitter-receiver. Other devices consistent with the present disclosure may include transponders, transverters, and/or repeaters, among similar devices. 
     As described in connection with  FIG. 1 , the network device  302  (e.g., processing resource  314 ) may be configured to communicate, via the transceiver resource  316 , with other devices via a communication that is operable in an EHF band. In a number of embodiments, a communication technology that can be utilized for communication  106  between the network devices  102  and the wireless memory device  104  may be a device-to-device communication using 5G technology. Stated differently, 5G cellular telecommunication may also be in a form of a device-to-device communication, in which data are communicated directly between a transmitting device and a receiving device. 
     Implementing 5G technology in a form of a device-to-device communication may provide various benefits such as reducing a design complexity of an apparatus (e.g., network devices  102  and/or wireless memory device  104 ) and/or providing a network communication via which network devices  102  and  202  may communicate with wireless main memory  104  and  204  as if the network devices  102  and  202  were local (e.g., physically coupled) to the wireless main memory  104  and  204 . As an example, consider network devices in previous approaches, in which the network devices utilize a device-to-device communication as well as a cellular telecommunication that routes data firstly through an intermediary device (e.g., base station, AP, etc.). The network devices in those previous approaches may include at least two different transceivers (e.g., each for the device-to-device communication and the cellular telecommunication) because each type of communication may utilize different network protocols that would further necessarily utilize unique transceivers. As such, the network devices implemented with different transceivers would increase a design (e.g., structural) complexity that may increase costs associated with the network devices. On the other hand, a number of embodiments of the present disclosure may reduce a design complexity of the network device  302  (e.g., network device) by eliminating a need of having different transceivers for different types of network communication technologies such as a device-to-device communication and a cellular telecommunication. Instead, the network device  302  can have an individual transceiver for different types of network communication technologies, which would reduce a structural complexity of the network device  302 ; thereby, reducing cost associated with the network device  302 . 
     In some examples, the transceiver resource  316  may be wirelessly couplable to a base station (e.g., base station  532  as illustrated in and described in connection with  FIG. 5 ). As used herein, “a base station” refers to a land station (e.g., including a telecommunication tower) in a mobile service (e.g., according to ITU Radio Regulations). The term may be used in the context of mobile telephony, wireless computer networking, and/or other wireless communications, as further described in connection with  FIG. 5 . 
       FIG. 4  is a schematic diagram illustrating an example apparatus  404  including a transceiver resource  426 , a controller  410 , and a wirelessly utilizable memory resource  408  in accordance with a number of embodiments of the present disclosure. The example apparatus  404  may be a more detailed example of the wireless memory device  104  and/or the wireless main memory  204  and may be utilizable by other devices such as the network devices  102 ,  202 , and  302 . For example, the wirelessly utilizable memory resource  408  may store data that may be directly accessible by the network devices  102 ,  202 , and  302 . 
     A memory resource  408  may include memory (e.g., memory cells) arranged, for example, in a number of bank groups, banks, bank sections, subarrays, and/or rows of a number of memory devices. The memory resource  408  may be DRAM. However, embodiments are not so limited. For example, the memory resource  212  of  FIG. 2  may include a plurality of memory devices such as a number of volatile memory devices formed and/or operable as RAM, DRAM, SRAM, SDRAM, and/or TRAM, among other types of volatile memory devices. For example, the memory resource  212  of  FIG. 2  may include a number of non-volatile memory devices formed and/or operable as PCRAM, RRAM, FeRAM, MRAM, and/or STT RAM, phase change memory, 3DXPoint, and/or Flash memory devices, among other types of non-volatile memory devices. 
     The memory resource  408  may be coupled to the controller  410  via a bus  423  for communicating data between the memory resource and the controller  410 . For example, the controller  410  may request particular data values stored in the memory resource  408  and the data values may be retrieved from the memory resource  408  to the controller  410  via the bus  423 . For example, the controller  410  may receive instructions retrieved from a wireless memory resource (not shown) and send those instructions to the memory resource  408  via the bus  423 . 
     The controller  410  can comprise control circuitry, in the form of hardware, firmware, or software, or any combination of the three. As an example, the controller  410  can comprise a state machine, a sequencer, and/or some other type of control circuitry, which may be implemented in the form of an application specific integrated circuit (ASIC) coupled to a printed circuit board. 
     In a number of embodiments, the controller  410  may be configured to communicate, via the transceiver resource  426 , data stored in the memory resource  408  via various communication technologies including a device-to-device communication technology that is operable at least in the EHF band, as described in connection with  FIG. 2 . The data stored in the memory resource may be directly accessible via the device-to-device communication such that the apparatus may be utilizable as a wireless main memory. The transceiver resource  426  may be and/or include a number of radio frequency (RF) transceivers. 
       FIG. 5  is a diagram illustrating an example system  530  including a number of network devices  502  and a wireless main memory  504  in accordance with a number of embodiments of the present disclosure. As illustrated in  FIG. 5 , the system  530  may, in a number of embodiments, include a plurality of elements. For example, the plurality of elements of the system  530  may be a number of network devices  502  (e.g., IoT enabled devices), a wireless main memory  504 , and/or base stations  532 - 1  and  532 - 2  (e.g., collectively referred to as base stations  532 ). Although  FIG. 5  describes an individual wireless main memory  504  and two base stations  532 , a number of memory devices and a number of base stations the system  530  can include are not limited to a particular amount. 
     Base stations  532 - 1  and  532 - 2  may be connected, via wired or wireless backhaul to a core network (e.g., via an Si interface) or with one another (e.g., via an X2 interface). A core network (not depicted) may be an evolved packet core. A core network may include one more serving gateways, packet data network gateways, mobility management entities, home subscription servers, switches, routers, or the like, coupled with one another via various interfaces to support user and control plane signaling. 
     In a number of embodiments, the number of network devices  502  may be IoT enabled devices, as described in connection with  FIG. 1 . For example, the IoT enabled devices can include physical devices, vehicles, home appliances, and other devices embedded with electronics, software, sensors, actuators, and/or network connectivity which enables such devices to connect to a network and/or exchange data. The number of network devices  502  and the wireless main memory  504  include various components, for example, including those described in connection with  FIGS. 2, 3 , and/or  4 . 
     As shown in  FIG. 5 , the system  530  can include a plurality of network devices  502  and a wireless main memory  504  coupled to at least a portion of the plurality of network devices  502  such that the wireless main memory is shareable among the portion of the plurality of network devices. The portion of the plurality network devices may be configured to communicate with the wireless main memory via a plurality of communication technologies, and at least one of the plurality of communication technologies may include a communication technology that is operable in a number of frequency bands including the EHF band as well as UHF, SHF, and/or THF bands. As described in connection with  FIG. 2 , the number of frequency bands may include those frequency bands illustrated in the Release 15 of the 3GPP, as described in connection with  FIG. 2 . 
     Various types of communication technologies (e.g., wireless network communication) may be employed within the system  530 . The types of communication technologies that can be employed within the system  530  can include a device-to-device communication (e.g., 5G, Bluetooth, Zigbee, etc.), a cellular telecommunication (e.g., 0-5G), and/or other types of wireless network communications such as WiFi (e.g., 802.11-based network communication). 
     In a number of embodiments, having a wireless main memory  504  within the system  530  that can be commonly shared among the number of network devices  502  can provide benefits such as reducing cost associated with establishing the system  530 . As an example, a system associated with utilizing IoT enabled devices may often include a substantial amount of IoT devices operating within the system. As such, having a main memory in each of the number of IoT devices may substantially increase a cost associated with each of the number of IoT devices, which would eventually increase a cost associated with establishing the system. On the other hand, in a number of embodiments, each of the number of IoT devices need not have an internal main memory because a wireless main memory can be commonly shared among the number of IoT devices, which would reduce a cost associated with each of the number of IoT devices. Accordingly, a number of embodiments can reduce cost associated with establishing the system  530 . 
     In an example illustrated in  FIG. 5 , the wireless main memory  504  is directly coupled to the network devices  502 - 1  and  502 - 3  such that the wireless main memory  504  communicates with the network devices  502 - 1  and  502 - 3  via a device-to-device communication. A device-to-device communication may utilize the 5G technology. As an example, the device-to-device communication utilizing the 5G technology may be operable in a number of frequency bands including the UHF, SHF, EHF, and/or THF bands, as described in connection with  FIG. 2 . However, embodiments are not so limited. For example, other device-to-device communication technologies may be employed within the system  530 . As an example, at least one of the network device  502 - 1  and/or  502 - 3  may communicate with the wireless main memory  504  via a different type of device-to-device communication such as a Bluetooth, Zigbee, and/or other types of device-to-device communications. 
     In an example described in  FIG. 5 , the network device  502 - 3  is further coupled to the base station  532 - 2 . The network device  502 - 3  may communicate with different network devices (e.g., network devices shown and/or not shown in  FIG. 5 ) via a cellular telecommunication that utilizes the base station  532 - 2  as an intermediary transceiver. 
     The term “base station” may be used in the context of mobile telephony, wireless computer networking, and/or other wireless communications. As an example, a base station (e.g., base station  532 - 1  and/or  532 - 2 ) may include a GPS receiver at a known position, while in wireless communications it may include a transceiver connecting a number of other devices to one another and/or to a wider area. As an example, in mobile telephony, a base station may provide a connection between mobile phones and the wider telephone network. As an example, in a computing network, a base station may include a transceiver acting as a router for compute components (e.g., memory resource  312  and processing resource  314 ) in a network, possibly connecting them to a WAN, WLAN, the Internet, and/or the cloud. For wireless networking, a base station may include a radio transceiver that may serve as a hub of a local wireless network. As an example, a base station also may be a gateway between a wired network and the wireless network. As an example, a base station may be a wireless communications station installed at a fixed location. 
     In a number of embodiments, the network device  502 - 3  may utilize the same transceiver (e.g., RF transceiver) for a device-to-device communication (e.g., 5G device-to-device communication) as well as a cellular telecommunication (e.g., 5G cellular telecommunication), as compared to those network devices that utilize separate transceivers for communicating with different types of network devices/entities. As an example, consider a network device that utilizes both a device-to-device communication and a cellular telecommunication (e.g., via a base station) in some approaches. In this example, the network device can include a plurality of transceiver resources (e.g., a plurality of RF transceivers) each specialized for different types of communications (e.g., device-to-device communication and cellular telecommunication) because the device-to-device communication and the cellular telecommunication utilize different network protocols, which would make it necessary to have different transceivers. In contrast, the network devices  502  (e.g., IoT enabled devices) and/or the wireless main memory  504  in accordance with a number of embodiments of the present disclosure need not have a plurality of transceiver resources as the same network protocol (e.g., network protocol for 5G technology) can be utilized for both device-to-device communication and cellular telecommunication. 
     Accordingly, the network devices  502  and/or the wireless main memory  504  in accordance with a number of embodiments of the present disclosure may include an individual transceiver (e.g., same transceiver) that can be utilized for both the device-to-device communication and the cellular telecommunication, which would provide benefits such as a reduced design complexity of the network devices  502 , and thereby reducing cost associated with manufacturing the network devices  502 . As an example, the wireless main memory  504  may utilize the same network protocol in communicating with the network device  502 - 2  (e.g., via a cellular telecommunication technology through the base station  532 - 1 ) as well as with the network devices  502 - 1  and/or  502 - 3  (e.g., via a device-to-device communication technology). 
     In a number of embodiments, various types of network protocols may be utilized for communicating data within the system  530  (e.g., among the network devices  502 , between the network devices  502  and the wireless memory device, between the network devices  502  and the base stations  532 , etc). The various types of network protocols may include the time-division multiple access (TDMA), code-division multiple access (CDMA), space-division multiple access (SDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), single-carrier (SC)-FDMA, and/or non-orthogonal multiple access (NOMA), although embodiments are not so limited. 
     In an example illustrated in  FIG. 5 , the wireless main memory  504  is indirectly coupled to the network devices  502 - 4 ,  502 - 5 , and  502 - 6 , which may utilize (e.g., share), via the network device  502 - 1 , the wireless main memory  504 . The network device  502 - 2  may be coupled to the wireless main memory  504  indirectly via a base station  532 - 1 . Accordingly, a communication technology utilized for a communication between the network device  502 - 2  and the base station  532 - 1  may be a cellular telecommunication technology (e.g., 5G cellular telecommunication) that is operable in a number of frequency bands including the EHF band. 
     The network devices  502 - 4 ,  502 - 5 , and  502 - 6  may be coupled to the wireless main memory  504  via the network device  502 - 1 . Accordingly, the system  530  may also include, for example, a multi-hop network, in which data are routed from a source node to a destination node via a number of intermediary nodes (e.g., intermediary devices such as the network device  502 - 1 ). As an example, the data may be retrieved from at least one of the network devices  502 - 4 ,  502 - 5 , and/or  502 - 6 , and may be transmitted, via a device-to-device communication, to the network device  502 - 1 , which may further route the retrieved data to the wireless main memory  504 . 
     In some embodiments, cellular telecommunication technologies (e.g., between the wireless memory device  504  and the network device  502 - 2 ) may be performed via (e.g., include) a NOMA. As used herein, the NOMA refers to a network protocol that separates signals according to a power domain. For example, signals may be received (e.g., from the user) in an intentionally-introduced mutual interference and can be separated from each other based on differences on their power levels. As such, the signals received and to be processed pursuant to the NOMA may be non-orthogonal in time, frequency, and/or code, as compared to those orthogonal multiple-access (OMA) schemes, in which different users are allocated according to orthogonal resources, either in time, frequency, and/or code domain. Accordingly, utilizing a non-orthogonal network protocols such as the NOMA may provide benefits such as reduced latencies associated with separating users based on factors other than power domain, which may enable massive Multiple Input Multiple Output (MIMO). 
       FIG. 6  is a flow chart illustrating an example of a method  640  for communication between wirelessly utilizable memory resource and remote processor in accordance with a number of embodiments of the present disclosure. Unless explicitly stated, elements of methods described herein are not constrained to a particular order or sequence. Additionally, a number of the method embodiments, or elements thereof, described herein may be performed at the same, or at substantially the same, point in time. 
     At block  642 , the method  640  may include communicating data with a remote processor via a communication link between a remote processor and memory. The remote processor and memory can be analogous to the processing resource  214  and  314 , and the memory resource  208  and  408 , respectively, as described herein. 
     In some embodiments, the communication link can be a device-to-device communication link in a number of frequency bands including a SHF band. Although embodiments are not so limited, the communication link may be within a shared frequency band. In this example, the method  640  may, in some embodiments, include contending an access to time and frequency resources within the shared frequency band. 
     The device-to-device communication link may utilize the 5G technology, as described herein. As an example, the device-to-device communication link utilizing the 5G technology may be operable in a number of frequency bands including the UHF, SHF, EHF, and/or THF bands, as described in connection with  FIG. 2 . However, embodiments are not so limited. For example, other device-to-device communication technologies can be employed. As an example, the device-to-device communication link can be of a different type of device-to-device communication technology such as a Bluetooth, Zigbee, and/or other types of device-to-device communication technologies. 
     At block  644 , the method  640  may include reading data to the remote processor. In some embodiments, reading the data to the remote processor may include retrieving, responsive to receiving a command from the remote processor, data stored in the memory, and transmitting, via the communication link in the EHF band, the retrieved data to the remote processor. At block  646 , the method  640  may include writing, to the memory, data received from the remote processor. 
       FIG. 7  is a flow chart illustrating an example of method  750  for performing operations on a wirelessly utilizable memory resource in accordance with a number of embodiments of the present disclosure. Unless explicitly stated, elements of methods described herein are not constrained to a particular order or sequence. Additionally, a number of the method embodiments, or elements thereof, described herein may be performed at the same, or at substantially the same, point in time. 
     At block  752 , the method  750  may include issuing, to a wireless memory, a command to perform a corresponding memory operation on the wireless memory. The wireless memory can be analogous to the memory resource  208  and  408 , respectively, as described herein. In some embodiments, the command can be issued from a remote processor (e.g., processing resource  214  and  314 ) that is coupled to the wireless memory via a communication link. 
     The command may be communicated to the wireless memory on a communication link in the EHF band. As described herein, a communication technology utilizing the communication link in the EHF band can include a 5G technology or later technology. 5G technology may be designed to utilize a higher frequency portion of the wireless spectrum, including an EHF band (e.g., ranging from 30 to 300 GHz as designated by the ITU). However, embodiments are not so limited. For example, the various types of communication technologies of the communication link may include cellular telecommunication including different generations of broadband cellular telecommunication technologies, device-to-device to communication including Bluetooth, Zigbee, and/or 5G (e.g., device-to-device communication operable in an EHF band), and/or other wireless communication utilizing an intermediary device (e.g., WiFi utilizing an AP). 
     At block  754 , the method  750  may include reading data from the wireless memory. In some embodiments, the wireless memory can be a wireless main memory. In this example, reading the data from the wireless memory as described at block  754  may further include retrieving a set of instructions stored in the wireless memory, and executing, by a processor coupled to the wireless main memory via the communication link, the retrieved set of instructions. In some embodiments, the method  750  may include storing, while the set of instructions are being executed by the processor, the retrieved set of instructions in a cache coupled to the processor. At block  756 , the method  750  may include writing data to the wireless memory. 
     As described herein, the remote processor can be in different statuses. For example, the method  750  may include (e.g., remote processor) entering periodically in to a first status to perform the corresponding memory operation on the wireless memory. The method  750  may further include (e.g., remote processor) entering into a second status when not in the first status. In some embodiments, a nominal power consumption of the second status can lower than a nominal power consumption of the first status. 
     In the above detailed description of the present disclosure, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration how one or more embodiments of the disclosure may be practiced. These embodiments are described in sufficient detail to enable those of ordinary skill in the art to practice the embodiments of this disclosure, and it is to be understood that other embodiments may be utilized and that process, electrical, and structural changes may be made without departing from the scope of the present disclosure. 
     It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting. As used herein, the singular forms “a”, “an”, and “the” include singular and plural referents, unless the context clearly dictates otherwise, as do “a number of”, “at least one”, and “one or more” (e.g., a number of memory arrays may refer to one or more memory arrays), whereas a “plurality of” is intended to refer to more than one of such things. Furthermore, the words “can” and “may” are used throughout this application in a permissive sense (i.e., having the potential to, being able to), not in a mandatory sense (i.e., must). The term “include,” and derivations thereof, means “including, but not limited to”. The terms “coupled” and “coupling” mean to be directly or indirectly connected physically for access to and/or for movement (transmission) of instructions (e.g., control signals, address signals, etc.) and data, as appropriate to the context. The terms “data” and “data values” are used interchangeably herein and may have the same meaning, as appropriate to the context (e.g., one or more data units or “bits”). 
     While example embodiments including various combinations and configurations of memory resources, processing resources, transceiver resources, memory devices, controllers, base stations, infrastructure, and switches, among other components for wirelessly utilizable memory devices have been illustrated and described herein, embodiments of the present disclosure are not limited to those combinations explicitly recited herein. Other combinations and configurations of the memory resources, processing resources, transceiver resources, memory devices, controllers, base stations, infrastructure, and switches for wirelessly utilizable memory devices between selected memory resources disclosed herein are expressly included within the scope of this disclosure. 
     Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art will appreciate that an arrangement calculated to achieve the same results may be substituted for the specific embodiments shown. This disclosure is intended to cover adaptations or variations of one or more embodiments of the present disclosure. It is to be understood that the above description has been made in an illustrative fashion, and not a restrictive one. Combination of the above embodiments, and other embodiments not specifically described herein will be apparent to those of skill in the art upon reviewing the above description. The scope of the one or more embodiments of the present disclosure includes other applications in which the above structures and processes are used. Therefore, the scope of one or more embodiments of the present disclosure should be determined with reference to the appended claims, along with the full range of equivalents to which such claims are entitled. 
     In the foregoing Detailed Description, some features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the disclosed embodiments of the present disclosure have to use more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separate embodiment.