WO2018085660A1

WO2018085660A1 - Enhancements for further evolved multimedia broadcast multicast service (fembms) cell acquisition subframes

Info

Publication number: WO2018085660A1
Application number: PCT/US2017/059939
Authority: WO
Inventors: Jeongho Jeon; Seunghee Han; Ralf Bendlin; Debdeep CHATTERJEE
Original assignee: Intel IP Corporation
Priority date: 2016-11-04
Filing date: 2017-11-03
Publication date: 2018-05-11
Also published as: WO2018085660A8

Abstract

Further evolved / enhanced MBMS (FeMBMS) subframes for cell acquisition can be configured, generated, or processed on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier. A cell acquisition subframe (CAS) subframe can be included frames of a transmission burst less frequently in frames configurations that are 100% MBMS subframes, including the CAS subframe, than less than 100% MBMS subframes. The CAS subframe can include a master information block MIB that can be provided with less than a total number of bits corresponding to the MIB, or with eight or less most significant bits (MSBs) of the MIB.

Description

ENHANCEMENTS FOR FURTHER EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE (FEMBMS) CELL ACQUISITION SUBFRAMES

REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Application Numbers 62/418,094 filed November 4, 2016, entitled "FEMBMS CELL ACQUISITION

SUBFRAMES", and the benefit of U.S. Provisional Application Numbers 62/421 ,847 filed November 14, 2016, entitled "POTENTIAL ENHANCEMENTS FOR FEMBMS CELL ACQUISITION SUBFRAMES", the contents of which are herein incorporated by reference in their entirety.

FIELD

[0002] The present disclosure relates to wireless technology, and more specifically to embodiments / aspects for the enhancement of further evolved Multimedia Broadcast Multicast Service (FeMBMS) cell acquisition subframes.

BACKGROUND

[0003] Wireless mobile communication technology uses various standards and protocols to transmit data between a node (e.g., a transmission station) and a wireless device (e.g., a mobile device), or a user equipment (UE). Some wireless devices communicate using orthogonal frequency-division multiple access (OFDMA) in a downlink (DL) transmission and single carrier frequency division multiple access (SC- FDMA) in an uplink (UL) transmission. Standards and protocols that use orthogonal frequency-division multiplexing (OFDM) for signal transmission include the third generation partnership project (3GPP) long term evolution (LTE), the Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard (e.g., 802.16e, 802.16m), which is commonly known to industry groups as WiMAX (Worldwide interoperability for Microwave Access), and the IEEE 802.1 1 standard, which is commonly known to industry groups as WiFi.

[0004] In 3GPP radio access network (RAN) LTE systems, the access node can be an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node Bs (also commonly denoted as evolved Node Bs, enhanced Node Bs, eNodeBs, or eNBs) with or without one or more Radio Network Controllers (RNCs), which can communicate with the UE. The DL transmission can be a communication from an access point / node or base station (e.g., a macro cell device, an eNodeB, an eNB, WiFi node, or other similar network device) to the UE, and the UL transmission can be a communication from the wireless network device to the node.

[0005] Evolved Multimedia Broadcast Multicast Service (eMBMS) provides an efficient way to deliver downloadable and streaming content to multiple users. Mobile video streaming is foreseen to generate a major volume of network data traffic in the future. Commercial deployments of eMBMS or "LTE Broadcast" are generating increasing interest. In order to meet the industry and operators' demand it is important to enhance eMBMS even further such as with further evolved MBMS (FeMBMS).

[0006] 3GPP is currently endeavoring to provide enhancements for television (TV) application support, whereby 3GPP networks can provide unicast and broadcast transport to support distribution of TV programs. It can support the three types of TV services - Free-to-air (FTA), Free-to-view (FTV), and Subscribed services. Each type of TV service has different requirements in order to meet regulatory obligations and public service and commercial broadcaster's requirements regarding content distribution.

[0007] Some LTE specifications support a downlink Orthogonal Frequency Division Multiplex (OFDM) mode using 7.5 kilohertz (kHz) subcarrier spacing and long cyclic prefix (CP) of 33.3 microseconds (με). However, there is no signaling defined indicating the use of this mode and hence it cannot be implemented. Even longer CP can be utilized to support Multimedia Broadcast multicast service Single Frequency Networks (MBSFNs) with higher spectral efficiency of 2 bps/Hz in areas with large inter-site distances (ISDs) (for example 15 km or larger inter-site distance), in particular in low frequency bands as in the 700 and 800 MHz bands and rural scenarios where indoor losses are smaller or for outdoor (rooftop) antennas as they are used for TV reception in many countries.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG. 1 is a block diagram illustrating an example user equipment (UE) useable in connection with various network component according to various aspects (embodiments) described herein.

[0009] FIG. 2 is a diagram illustrating example components of a device that can be employed in accordance with various aspects discussed herein.

[0010] FIG. 3 is a diagram illustrating example interfaces of baseband circuitry that can be employed in accordance with various aspects discussed herein. [0011] FIG. 4 is a block diagram illustrating a system employable at a UE that enables greater power efficiency for generating communications with one or more CAS subframes in MBMS subframe configurations according to various aspects /

embodiments described herein according to various aspects described herein.

[0012] FIG. 5 is a block diagram illustrating a system employable at a base station (BS) / evolved NodeB (eNB)/ new radio / next generation NodeB (gNB) that enables greater power efficiency for generating a communications with one or more CAS subframes in MBMS subframe configurations according to various aspects /

embodiments described herein, according to various aspects described herein.

[0013] FIG/ 6 illustrates transmission configuration / structures for less than 100 % MBMS configuration and 100 % MBMS configuration according to various aspects or embodiments described herein.

[0014] FIG. 7 illustrates a process flow of processing or generating transmission communications with one or more CAS subframes with a 1 00% MBMS configuration according to various aspects / embodiments described herein according to various aspects or embodiments described herein.

DETAILED DESCRIPTION

[0015] The present disclosure will now be described with reference to the attached drawing figures, wherein like reference numerals are used to refer to like elements throughout, and wherein the illustrated structures and devices are not necessarily drawn to scale. As utilized herein, terms "component," "system," "interface," and the like are intended to refer to a computer-related entity, hardware, software (e.g., in execution), and/or firmware. For example, a component can be a processor (e.g., a microprocessor, a controller, or other processing device), a process running on a processor, a controller, an object, an executable, a program, a storage device, a computer, a tablet PC and/or a user equipment (UE) (e.g., mobile / wireless phone, etc.) with a processing device. By way of illustration, an application running on a server and the server can also be a component. One or more components can reside within a process, and a component can be localized on one computer and/or distributed between two or more computers. A set of elements or a set of other components can be described herein, in which the term "set" can be interpreted as "one or more."

[0016] Further, these components can execute from various computer readable storage media having various data structures stored thereon such as with a module, for example. The components can communicate via local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network, such as, the Internet, a local area network, a wide area network, or similar network with other systems via the signal).

[0017] As another example, a component can be an apparatus with specific functionality provided by mechanical parts operated by electric or electronic circuitry, in which the electric or electronic circuitry can be operated by a software application or a firmware application executed by one or more processors. The one or more processors can be internal or external to the apparatus and can execute at least a part of the software or firmware application. As yet another example, a component can be an apparatus that provides specific functionality through electronic components without mechanical parts; the electronic components can include one or more processors therein to execute software and/or firmware that confer(s), at least in part, the functionality of the electronic components.

[0018] Use of the word exemplary is intended to present concepts in a concrete fashion. As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or clear from context, "X employs A or B" is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then "X employs A or B" is satisfied under any of the foregoing instances. In addition, the articles "a" and "an" as used in this application and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Furthermore, to the extent that the terms "including", "includes", "having", "has", "with", or variants thereof are used in either the detailed description and the claims, such terms are intended to be inclusive in a manner similar to the term

"comprising."

OVERVIEW

[0019] In consideration of the above, various aspects / embodiments are disclosed for generating and processing communications that enable user equipment (UE) to autonomously detect various multicast-broadcast single-frequency network (MBSFN) configurations within subframes of a transmission frame or burst. Various aspects / embodiments provide enhancements for the reception of the Cell Acquisition

Subframe (CAS) or CAS subframe. In particular, a CAS subframe can be generated / transmitted and received / processed in a DL transmission / DL transmission burst. This CAS subframe can enable a cell attach operation / LTE attach procedure, for example, especially with a TV channel / MBMS carrier / eMBMS carrier / FeMBMS carrier / the like in a single frequency network.

[0020] An single frequency network can be a broadcast network where several transmitters / eNBs / gNBs / base stations (e.g., MBMS base stations) or the like can simultaneously transmit or send a same signal over a same frequency channel. The CAS subframe can be provided, for example, over a DL transmission burst having one or more frames over the SFN. The CAS subframe can include the Master Information Block (MIB) carried by a physical broadcast channel (PBCH) / physical multicast channel (PMCH), which can further carry initialization data to be utilized by the UE for cell attach procedures.

[0021] In an aspect, the CAS subframe can be transmitted in a System Frame Number (SFN) modulo (mod) of X=Y, where X is any positive integer and Y is any positive integer equal to or smaller than X; expressed as, SFN mod X = Y. The SFN can be used for synchronization and timing reference, and enable identification of the DL frames / subframes where MIB or system information blocks (SIBs) can be contained in the transmission.

[0022] SFN indication in the MIB can be correspondingly adjusted according to the PBCH transmission periodicity and the MIB's refresh periodicity. If PBCH is transmitted every 20 ms and MIB is refreshed every 80 milliseconds (ms), then 7 or less Most Significant Bits (MSB) of SFN can be included in MIB rather than the total number of bits. For example, six bits can be includes to indicate the SFN in the MIB without more when the MBMS subframe configuration or MBSFN configuration comprises 1 00% MBMS subframes over a less than 100% MBMS subframe configuration.

[0023] A 100% MBMS subframe configuration can be one or more frames of a transmission or signal is without unicast data, or non-MBMS subframes. In other words, the 100% MBMS subframe configuration can be one or more frames with all MBMS subframes, including the CAS subframe, for example.

[0024] In an aspect, a UE can autonomously detect and distinguish the 100% and less than 100% MBSFN configurations via, for example. The UE can do this based on one or more communication parameters, such as a detected Primary Synchronization Signal (PSS) / Secondary Synchronization Signal (SSS) periodicity. In other aspects, a repetition mapping can be applied for PBCH in the CAS. Furthermore, duration extension can be applied for PBCH in CAS, as such the transmission can be provided with an extended cyclic prefix (CP). Additional aspects and details of the disclosure are further described below with reference to figures.

[0025] Embodiments described herein can be implemented into a system using any suitably configured hardware and/or software. FIG. 1 illustrates an architecture of a system 1 00 of a network in accordance with some embodiments for generating / enabling MBSFN communications according to various aspects / embodiments described herein. The system 100 is shown to include a user equipment (UE) 101 and a UE 102. The UEs 101 and 1 02 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks), but can also comprise any mobile or non-mobile computing device, such as Personal Data Assistants (PDAs), pagers, laptop computers, desktop computers, wireless handsets, or any computing device including a wireless communications interface.

[0026] In some embodiments, any of the UEs 101 and 102 can comprise an Internet of Things (loT) UE, which can comprise a network access layer designed for low-power loT applications utilizing short-lived UE connections, and can be distinguished from cellular UEs or wireless cell devices alone as low power network devices as eMTC or NB-loT UEs utilizing a low power network, for example, or MulteFire standards for communication. An loT UE can utilize technologies such as machine-to-machine (M2M) or machine-type communications (MTC) for exchanging data with an MTC server or device via a public land mobile network (PLMN), Proximity-Based Service (ProSe) or device-to-device (D2D) communication, sensor networks, or loT networks. The M2M or MTC exchange of data can be a machine-initiated exchange of data. An loT network describes interconnecting loT UEs, which can include uniquely identifiable embedded computing devices (within the Internet infrastructure), with short-lived connections. The loT UEs can execute background applications (e.g., keep-alive messages, status updates, etc.) to facilitate the connections of the loT network.

[0027] The UEs 101 and 102 can be configured to connect, e.g., communicatively couple, with a radio access network (RAN) 1 10— the RAN 1 10 can be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN), a NextGen RAN (NG RAN), or some other type of RAN. The UEs 101 and 102 utilize connections 103 and 104, respectively, each of which comprises a physical communications interface or layer (discussed in further detail below); in this example, the connections 103 and 104 are illustrated as an air interface to enable communicative coupling, and can be consistent with cellular communications protocols, such as a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth generation (5G) protocol, a New Radio (NR) protocol, and the like.

[0028] In this embodiment, the UEs 101 and 1 02 can further directly exchange communication data via a ProSe interface 105. The ProSe interface 105 can

alternatively be referred to as a sidelink interface comprising one or more logical channels, including but not limited to a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel (PSSCH), a Physical Sidelink Discovery Channel (PSDCH), and a Physical Sidelink Broadcast Channel (PSBCH).

[0029] The UE 102 is shown to be configured to access an access point (AP) 106 via connection 107. The connection 107 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.1 1 protocol, wherein the AP 106 would comprise a wireless fidelity (WiFi®) router. In this example, the AP 1 06 is shown to be connected to the Internet without connecting to the core network of the wireless system (described in further detail below).

[0030] The RAN 1 1 0 can include one or more access nodes that enable the connections 1 03 and 104. These access nodes (ANs) can be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), next Generation NodeBs (gNB), RAN nodes, and so forth, and can comprise ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell). The RAN 1 1 0 can include one or more RAN nodes for providing macrocells, e.g., macro RAN node 1 1 1 , and one or more RAN nodes for providing femtocells or picocells (e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells), e.g., low power (LP) RAN node 1 12.

[0031] Any of the RAN nodes 1 1 1 and 1 12 can terminate the air interface protocol and can be the first point of contact for the UEs 101 and 102. In some embodiments, any of the RAN nodes 1 1 1 and 1 12 can fulfill various logical functions for the RAN 1 1 0 including, but not limited to, radio network controller (RNC) functions such as radio bearer management, uplink and downlink dynamic radio resource management and data packet scheduling, and mobility management. [0032] In accordance with some embodiments, the UEs 101 and 102 can be configured to communicate using Orthogonal Frequency-Division Multiplexing (OFDM) communication signals with each other or with any of the RAN nodes 1 1 1 and 1 1 2 over a multicarrier communication channel in accordance various communication techniques, such as, but not limited to, an Orthogonal Frequency-Division Multiple Access (OFDMA) communication technique (e.g., for downlink communications) or a Single Carrier Frequency Division Multiple Access (SC-FDMA) communication technique (e.g., for uplink and ProSe or sidelink communications), although the scope of the embodiments is not limited in this respect. The OFDM signals can comprise a plurality of orthogonal subcarriers.

[0033] In some embodiments, a downlink resource grid can be used for downlink transmissions from any of the RAN nodes 1 1 1 and 1 12 to the UEs 101 and 1 02, while uplink transmissions can utilize similar techniques. The grid can be a time-frequency grid, called a resource grid or time-frequency resource grid, which is the physical resource in the downlink in each slot. Such a time-frequency plane representation is a common practice for OFDM systems, which makes it intuitive for radio resource allocation. Each column and each row of the resource grid corresponds to one OFDM symbol and one OFDM subcarrier, respectively. The duration of the resource grid in the time domain corresponds to one slot in a radio frame. The smallest time-frequency unit in a resource grid is denoted as a resource element. Each resource grid comprises a number of resource blocks, which describe the mapping of certain physical channels to resource elements. Each resource block comprises a collection of resource elements; in the frequency domain, this can represent the smallest quantity of resources that currently can be allocated. There are several different physical downlink channels that are conveyed using such resource blocks.

[0034] The physical downlink shared channel (PDSCH) can carry user data and higher-layer signaling to the UEs 101 and 102. The physical downlink control channel (PDCCH) can carry information about the transport format and resource allocations related to the PDSCH channel, among other things. It can also inform the UEs 101 and 102 about the transport format, resource allocation, and H-ARQ (Hybrid Automatic Repeat Request) information related to the uplink shared channel. Typically, downlink scheduling (assigning control and shared channel resource blocks to the UE 102 within a cell) can be performed at any of the RAN nodes 1 1 1 and 1 12 based on channel quality information fed back from any of the UEs 101 and 102. The downlink resource assignment information can be sent on the PDCCH used for (e.g., assigned to) each of the UEs 101 and 1 02.

[0035] The PDCCH can use control channel elements (CCEs) to convey the control information. Before being mapped to resource elements, the PDCCH complex-valued symbols can first be organized into quadruplets, which can then be permuted using a sub-block interleaver for rate matching. Each PDCCH can be transmitted using one or more of these CCEs, where each CCE can correspond to nine sets of four physical resource elements known as resource element groups (REGs). Four Quadrature Phase Shift Keying (QPSK) symbols can be mapped to each REG. The PDCCH can be transmitted using one or more CCEs, depending on the size of the downlink control information (DCI) and the channel condition. There can be four or more different PDCCH formats defined in LTE with different numbers of CCEs (e.g., aggregation level, L=1 , 2, 4, or 8).

[0036] Some embodiments can use concepts for resource allocation for control channel information that are an extension of the above-described concepts. For example, some embodiments can utilize an enhanced physical downlink control channel (EPDCCH) that uses PDSCH resources for control information transmission. The EPDCCH can be transmitted using one or more enhanced the control channel elements (ECCEs). Similar to above, each ECCE can correspond to nine sets of four physical resource elements known as an enhanced resource element groups (EREGs). An ECCE can have other numbers of EREGs in some situations.

[0037] The RAN 1 1 0 is shown to be communicatively coupled to a core network (CN) 1 20— via an S1 interface 1 1 3. In embodiments, the CN 120 can be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN. In this embodiment the S1 interface 1 13 can be split into two parts: the S1 -U interface 1 14, which carries traffic data between the RAN nodes 1 1 1 and 1 12 and the serving gateway (S-GW) 122, and the S1 -mobility management entity (MME) interface 1 15, which is a signaling interface between the RAN nodes 1 1 1 and 1 12 and MMEs 121 .

[0038] In this embodiment, the CN 1 20 comprises the MMEs 1 21 , the S-GW 122, the Packet Data Network (PDN) Gateway (P-GW) 123, and a home subscriber server (HSS) 124. The MMEs 121 can be similar in function to the control plane of legacy Serving General Packet Radio Service (GPRS) Support Nodes (SGSN). The MMEs 121 can manage mobility aspects in access such as gateway selection and tracking area list management. The HSS 124 can comprise a database for network users, including subscription-related information to support the network entities' handling of

communication sessions. The CN 120 can comprise one or several HSSs 124, depending on the number of mobile subscribers, on the capacity of the equipment, on the organization of the network, etc. For example, the HSS 124 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, etc.

[0039] The S-GW 122 can terminate the S1 interface 1 13 towards the RAN 1 1 0, and routes data packets between the RAN 1 10 and the CN 120. In addition, the S-GW 122 can be a local mobility anchor point for inter-RAN node handovers and also can provide an anchor for inter-3GPP mobility. Other responsibilities can include lawful intercept, charging, and some policy enforcement.

[0040] The P-GW 123 can terminate an SGi interface toward a PDN. The P-GW 123 can route data packets between the EPC network 123 and external networks such as a network including the application server 130 (alternatively referred to as application function (AF)) via an Internet Protocol (IP) interface 125. Generally, the application server 130 can be an element offering applications that use IP bearer resources with the core network (e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.). In this embodiment, the P-GW 123 is shown to be communicatively coupled to an application server 130 via an IP communications interface 125. The application server 130 can also be configured to support one or more communication services (e.g., Voice-over-Internet Protocol (VoIP) sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UEs 101 and 102 via the CN 120.

[0041] The P-GW 123 can further be a node for policy enforcement and charging data collection. Policy and Charging Enforcement Function (PCRF) 126 is the policy and charging control element of the CN 120. In a non-roaming scenario, there can be a single PCRF in the Home Public Land Mobile Network (HPLMN) associated with a UE's Internet Protocol Connectivity Access Network (IP-CAN) session. In a roaming scenario with local breakout of traffic, there can be two PCRFs associated with a UE's IP-CAN session: a Home PCRF (H-PCRF) within a HPLMN and a Visited PCRF (V-PCRF) within a Visited Public Land Mobile Network (VPLMN). The PCRF 126 can be communicatively coupled to the application server 130 via the P-GW 123. The application server 130 can signal the PCRF 1 26 to indicate a new service flow and select the appropriate Quality of Service (QoS) and charging parameters. The PCRF 126 can provision this rule into a Policy and Charging Enforcement Function (PCEF) (not shown) with the appropriate traffic flow template (TFT) and QoS class of identifier (QCI), which commences the QoS and charging as specified by the application server 130.

[0042] FIG. 2 illustrates example components of a device 200 in accordance with some embodiments. In some embodiments, the device 200 can include application circuitry 202, baseband circuitry 204, radio frequency (RF) circuitry 206, front-end module (FEM) circuitry 208, one or more antennas 21 0, and power management circuitry (PMC) 21 2 coupled together at least as shown. The components of the illustrated device 200 can be included in a gNB, eNB, UE, a RAN node or other network device incorporating one or more various aspects / embodiments herein. In some embodiments, the device 200 can include less elements (e.g., a RAN node could not utilize application circuitry 202, and instead include a processor/controller to process IP data received from an EPC). In some embodiments, the device 200 can include additional elements such as, for example, memory/storage, display, camera, sensor, or input/output (I/O) interface. In other embodiments, the components described below can be included in more than one device (e.g., said circuitries can be separately included in more than one device for Cloud-RAN (C-RAN) implementations).

[0043] The application circuitry 202 can include one or more application processors. For example, the application circuitry 202 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor(s) can include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.). The processors can be coupled with or can include memory/storage and can be configured to execute instructions stored in the memory/storage to enable various applications or operating systems to run on the device 200. In some embodiments, processors of application circuitry 202 can process IP data packets received from an EPC.

[0044] The baseband circuitry 204 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The baseband circuitry 204 can include one or more baseband processors or control logic to process baseband signals received from a receive signal path of the RF circuitry 206 and to generate baseband signals for a transmit signal path of the RF circuitry 206. Baseband processing circuity 204 can interface with the application circuitry 202 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 206. For example, in some embodiments, the baseband circuitry 204 can include a third generation (3G) baseband processor 204A, a fourth generation (4G) baseband processor 204B, a fifth generation (5G) baseband processor 204C, or other baseband processor(s) 204D for other existing generations, generations in development or to be developed in the future (e.g., second generation (2G), sixth generation (6G), etc.). The baseband circuitry 204 (e.g., one or more of baseband processors 204A-D) can handle various radio control functions that enable communication with one or more radio networks via the RF circuitry 206. In other embodiments, some or all of the functionality of baseband processors 204A-D can be included in modules stored in the memory 204G and executed via a Central Processing Unit (CPU) 204E. The radio control functions can include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc. In some embodiments, modulation/demodulation circuitry of the baseband circuitry 204 can include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality. In some embodiments,

encoding/decoding circuitry of the baseband circuitry 204 can include convolution, tail- biting convolution, turbo, Viterbi, or Low Density Parity Check (LDPC) encoder/decoder functionality. Embodiments of modulation/demodulation and encoder/decoder functionality are not limited to these examples and can include other suitable functionality in other embodiments.

[0045] In some embodiments, the baseband circuitry 204 can include one or more audio digital signal processor(s) (DSP) 204F. The audio DSP(s) 204F can be include elements for compression/decompression and echo cancellation and can include other suitable processing elements in other embodiments. Components of the baseband circuitry can be suitably combined in a single chip, a single chipset, or disposed on a same circuit board in some embodiments. In some embodiments, some or all of the constituent components of the baseband circuitry 204 and the application circuitry 202 can be implemented together such as, for example, on a system on a chip (SOC).

[0046] In some embodiments, the baseband circuitry 204 can provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry 204 can support communication with an evolved universal terrestrial radio access network (EUTRAN) or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN). Embodiments in which the baseband circuitry 204 is configured to support radio communications of more than one wireless protocol can be referred to as multi-mode baseband circuitry.

[0047] RF circuitry 206 can enable communication with wireless networks

using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry 206 can include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network. RF circuitry 206 can include a receive signal path which can include circuitry to down-convert RF signals received from the FEM circuitry 208 and provide baseband signals to the baseband circuitry 204. RF circuitry 206 can also include a transmit signal path which can include circuitry to up- convert baseband signals provided by the baseband circuitry 204 and provide RF output signals to the FEM circuitry 208 for transmission.

[0048] In some embodiments, the receive signal path of the RF circuitry 206 can include mixer circuitry 206a, amplifier circuitry 206b and filter circuitry 206c. In some embodiments, the transmit signal path of the RF circuitry 206 can include filter circuitry 206c and mixer circuitry 206a. RF circuitry 206 can also include synthesizer circuitry 206d for synthesizing a frequency for use by the mixer circuitry 206a of the receive signal path and the transmit signal path. In some embodiments, the mixer circuitry 206a of the receive signal path can be configured to down-convert RF signals received from the FEM circuitry 208 based on the synthesized frequency provided by synthesizer circuitry 206d. The amplifier circuitry 206b can be configured to amplify the down- converted signals and the filter circuitry 206c can be a low-pass filter (LPF) or bandpass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals. Output baseband signals can be provided to the baseband circuitry 204 for further processing. In some embodiments, the output baseband signals can be zero-frequency baseband signals, although this is not a requirement. In some embodiments, mixer circuitry 206a of the receive signal path can comprise passive mixers, although the scope of the embodiments is not limited in this respect.

[0049] In some embodiments, the mixer circuitry 206a of the transmit signal path can be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 206d to generate RF output signals for the FEM circuitry 208. The baseband signals can be provided by the baseband circuitry 204 and can be filtered by filter circuitry 206c. [0050] In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path can include two or more mixers and can be arranged for quadrature downconversion and upconversion, respectively. In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path can include two or more mixers and can be arranged for image rejection (e.g., Hartley image rejection). In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a can be arranged for direct downconversion and direct upconversion, respectively. In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path can be configured for super-heterodyne operation.

[0051] In some embodiments, the output baseband signals and the input baseband signals can be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternate embodiments, the output baseband signals and the input baseband signals can be digital baseband signals. In these alternate embodiments, the RF circuitry 206 can include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 204 can include a digital baseband interface to communicate with the RF circuitry 206.

[0052] In some dual-mode embodiments, a separate radio IC circuitry can be provided for processing signals for each spectrum, although the scope of the

embodiments is not limited in this respect.

[0053] In some embodiments, the synthesizer circuitry 206d can be a fractional-N synthesizer or a fractional N/N+1 synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers can be suitable. For example, synthesizer circuitry 206d can be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.

[0054] The synthesizer circuitry 206d can be configured to synthesize an output frequency for use by the mixer circuitry 206a of the RF circuitry 206 based on a frequency input and a divider control input. In some embodiments, the synthesizer circuitry 206d can be a fractional N/N+1 synthesizer.

[0055] In some embodiments, frequency input can be provided by a voltage controlled oscillator (VCO), although that is not a requirement. Divider control input can be provided by either the baseband circuitry 204 or the applications processor 202 depending on the desired output frequency. In some embodiments, a divider control input (e.g., N) can be determined from a look-up table based on a channel indicated by the applications processor 202.

[0056] Synthesizer circuitry 206d of the RF circuitry 206 can include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator. In some embodiments, the divider can be a dual modulus divider (DMD) and the phase accumulator can be a digital phase accumulator (DPA). In some embodiments, the DMD can be configured to divide the input signal by either N or N+1 (e.g., based on a carry out) to provide a fractional division ratio. In some example embodiments, the DLL can include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip- flop. In these embodiments, the delay elements can be configured to break a VCO period up into Nd equal packets of phase, where Nd is the number of delay elements in the delay line. In this way, the DLL provides negative feedback to help ensure that the total delay through the delay line is one VCO cycle.

[0057] In some embodiments, synthesizer circuitry 206d can be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency can be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency) and used in conjunction with quadrature generator and divider circuitry to generate multiple signals at the carrier frequency with multiple different phases with respect to each other. In some embodiments, the output frequency can be a LO frequency (fLO). In some embodiments, the RF circuitry 206 can include an IQ/polar converter.

[0058] FEM circuitry 208 can include a receive signal path which can include circuitry configured to operate on RF signals received from one or more antennas 210, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 206 for further processing. FEM circuitry 208 can also include a transmit signal path which can include circuitry configured to amplify signals for transmission provided by the RF circuitry 206 for transmission by one or more of the one or more antennas 21 0. In various embodiments, the amplification through the transmit or receive signal paths can be done solely in the RF circuitry 206, solely in the FEM 208, or in both the RF circuitry 206 and the FEM 208.

[0059] In some embodiments, the FEM circuitry 208 can include a TX/RX switch to switch between transmit mode and receive mode operation. The FEM circuitry can include a receive signal path and a transmit signal path. The receive signal path of the FEM circuitry can include an LNA to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 206). The transmit signal path of the FEM circuitry 208 can include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 206), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 21 0).

[0060] In some embodiments, the PMC 212 can manage power provided to the baseband circuitry 204. In particular, the PMC 21 2 can control power-source selection, voltage scaling, battery charging, or DC-to-DC conversion. The PMC 212 can often be included when the device 200 is capable of being powered by a battery, for example, when the device is included in a UE. The PMC 21 2 can increase the power conversion efficiency while providing desirable implementation size and heat dissipation

characteristics.

[0061] While FIG. 2 shows the PMC 212 coupled only with the baseband circuitry 204. However, in other embodiments, the PMC 2 12 can be additionally or alternatively coupled with, and perform similar power management operations for, other components such as, but not limited to, application circuitry 202, RF circuitry 206, or FEM 208.

[0062] In some embodiments, the PMC 212 can control, or otherwise be part of, various power saving mechanisms of the device 200. For example, if the device 200 is in an RRC_Connected state, where it is still connected to the RAN node as it expects to receive traffic shortly, then it can enter a state known as Discontinuous Reception Mode (DRX) after a period of inactivity. During this state, the device 200 can power down for brief intervals of time and thus save power.

[0063] If there is no data traffic activity for an extended period of time, then the device 200 can transition off to an RRCJdle state, where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc. The device 200 goes into a very low power state and it performs paging where again it periodically wakes up to listen to the network and then powers down again. The device 200 can not receive data in this state, in order to receive data, it must transition back to RRC_Connected state.

[0064] An additional power saving mode can allow a device to be unavailable to the network for periods longer than a paging interval (ranging from seconds to a few hours). During this time, the device is totally unreachable to the network and can power down completely. Any data sent during this time incurs a large delay and it is assumed the delay is acceptable. [0065] Processors of the application circuitry 202 and processors of the baseband circuitry 204 can be used to execute elements of one or more instances of a protocol stack. For example, processors of the baseband circuitry 204, alone or in combination, can be used execute Layer 3, Layer 2, or Layer 1 functionality, while processors of the application circuitry 204 can utilize data (e.g., packet data) received from these layers and further execute Layer 4 functionality (e.g., transmission communication protocol (TCP) and user datagram protocol (UDP) layers). As referred to herein, Layer 3 can comprise a radio resource control (RRC) layer, described in further detail below. As referred to herein, Layer 2 can comprise a medium access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer, described in further detail below. As referred to herein, Layer 1 can comprise a physical (PHY) layer of a UE/RAN node, described in further detail below.

[0066] FIG. 3 illustrates example interfaces of baseband circuitry in accordance with some embodiments. As discussed above, the baseband circuitry 204 of FIG. 2 can comprise processors 204A-204E and a memory 204G utilized by said processors. Each of the processors 204A-204E can include a memory interface, 304A-304E, respectively, to send/receive data to/from the memory 204G.

[0067] In addition, the memory 204G (as well as other memory components discussed herein, such as memory 430, memory 530 or the like) can comprise one or more machine-readable medium / media including instructions that, when performed by a machine or component herein cause the machine to perform acts of the method or of an apparatus or system for concurrent communication using multiple communication technologies according to embodiments and examples described herein. It is to be understood that aspects described herein can be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, functions can be stored on or transmitted over as one or more instructions or code on a computer- readable medium (e.g., the memory described herein or other storage device).

Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media or a computer readable storage device can be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or other tangible and/or non-transitory medium, that can be used to carry or store desired information or executable

instructions. Also, any connection can also be termed a computer-readable medium. For example, if 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 technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.

[0068] The baseband circuitry 204 can further include one or more interfaces to communicatively couple to other circuitries/devices, such as a memory interface 312 (e.g., an interface to send/receive data to/from memory external to the baseband circuitry 204), an application circuitry interface 314 (e.g., an interface to send/receive data to/from the application circuitry 202 of FIG. 2), an RF circuitry interface 316 (e.g., an interface to send/receive data to/from RF circuitry 206 of FIG. 2), a wireless hardware connectivity interface 31 8 (e.g., an interface to send/receive data to/from Near Field Communication (NFC) components, Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi® components, and other communication components), and a power management interface 320 (e.g., an interface to send/receive power or control signals to/from the PMC 212).

[0069] Referring to FIG. 4, illustrated is a block diagram of a system 400 employable at a user equipment (UE) that facilitates or enables greater power efficiency for generating a DRS communication in one or more DRS subframe configurations according to various aspects / embodiments described herein. System 400 can include one or more processors 410 (e.g., one or more baseband processors such as one or more of the baseband processors discussed in connection with FIG. 2 and/or FIG. 3) comprising processing circuitry and associated memory interface(s) (e.g., memory interface(s) discussed in connection with FIG. 3), transceiver circuitry 420 (e.g., comprising one or more of transmitter circuitry or receiver circuitry, which can employ common circuit elements, distinct circuit elements, or a combination thereof), and a memory 430 (which can comprise any of a variety of storage mediums and can store instructions and/or data associated with one or more of processor(s) 410 or transceiver circuitry 420). In various aspects, system 400 can be included within a user equipment (UE), for example, a MTC / loT UE. As described in greater detail below, system 400 can generate / process MBSFN communications in various configurations based on detection of one or more parameters (e.g., PSS / SSS periodicity or other criteria) of subframe configurations according to various aspects / embodiments described herein

[0070] In various aspects discussed herein, signals and/or messages can be generated and output for transmission, and/or transmitted messages can be received and processed. Depending on the type of signal or message generated, outputting for transmission (e.g., by processor(s) 410, processor(s) 510, etc.) can comprise one or more of the following: generating a set of associated bits that indicate the content of the signal or message, coding (e.g., which can include adding a cyclic redundancy check (CRC) and/or coding via one or more of turbo code, low density parity-check (LDPC) code, tailbiting convolution code (TBCC), etc.), scrambling (e.g., based on a scrambling seed), modulating (e.g., via one of binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), or some form of quadrature amplitude modulation (QAM), etc.), and/or resource mapping (e.g., to a scheduled set of resources, to a set of time and frequency resources granted for uplink transmission, etc.). Depending on the type of received signal or message, processing (e.g., by processor(s) 410, processor(s) 51 0, etc.) can comprise one or more of: identifying physical resources associated with the signal/message, detecting the signal/message, resource element group deinterleaving, demodulation, descrambling, and/or decoding.

[0071] Referring to FIG. 5, illustrated is a block diagram of a system 500 employable at a BS (Base Station), gNB, eNB or other network device / component that enables enhancements for a FeMBMS cell acquisition subframe (CAS). System 500 can include one or more processors 510 (e.g., one or more baseband processors such as one or more of the baseband processors discussed in connection with FIG. 2 and/or FIG. 3) comprising processing circuitry and associated memory interface(s) (e.g., memory interface(s) discussed in connection with FIG. 3), communication circuitry 520 (e.g., which can comprise circuitry for one or more wired (e.g., X2, etc.) connections and/or transceiver circuitry that can comprise one or more of transmitter circuitry (e.g., associated with one or more transmit chains) or receiver circuitry (e.g., associated with one or more receive chains), wherein the transmitter circuitry and receiver circuitry can employ common circuit elements, distinct circuit elements, or a combination thereof), and memory 530 (which can comprise any of a variety of storage mediums and can store instructions and/or data associated with one or more of processor(s) 510 or communication circuitry 520). In various aspects, system 500 can be included within an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (Evolved Node B, eNodeB, or eNB), next generation Node B (gNodeB or gNB) or other base station in a wireless communications network. In some aspects, the processor(s) 510,

communication circuitry 520, and the memory 530 can be included in a single device, while in other aspects, they can be included in different devices, such as part of a distributed architecture. As described in greater detail below, system 500 can facilitate / enable communications for MBSFN.

[0072] Current allocation of MBSFN subframes can be limited to subframes 1 , 2, 3, 6, 7, 8 as a subframe index number. There can be scenarios where a larger allocation is desirable. One such example can be the use of eMBMS deployed on a supplementary downlink (SDL) carrier, in order to avoid wasting uplink capacity on an FDD

uplink/downlink carrier pair. All eMBMS traffic could be concentrated on as few

SDL carriers as possible.

[0073] Legacy MBSFN subframes can have a unicast control region of 1 or 2 OFDM symbols. With eMBMS on an SDL and with almost all subframes allocated to eMBMS, there can be hardly any use for the control region. In conjunction with the longer OFDM symbol and cyclic prefix (CP) durations that can be utilized for MBSFN, a unicast control symbol can pose an even larger overhead.

[0074] The use case of a standalone eMBMS network can also present a new deployment scenario. In addition to the aspects discussed above, it can utilize self- contained signaling on an eMBMS-only cell / carrier.

[0075] Further enhancements for the reception of the CAS or CAS subframe can be utilized between the UE device 400, for example, one or more eNBs / gNBs in LTE, 5G, or other communication. The CAS subframe can be transmitted in System Frame Number (SFN) mod X = Y, where X is any positive integer and Y is any positive integer equal to or smaller than X. X can be a number of times that the CAS subframe is transmitted or repeated once at each of X frames, while Y can be the offset from the start of the frame.

[0076] An SFN indication in the Master Information Block (MIB) can be

correspondingly adjusted according to the PBCH transmission periodicity and a refresh periodicity / change periodicity of the MIB. This refresh / change periodicity can represent the frequency, duration or period by which the MIB can change, be updated or potentially refreshed or not from among transmission frames of a transmission burst, for example. If the PBCH is transmitted every 20 ms and MIB is refreshed every 80 milliseconds (ms), then 7 Most Significant Bits (MSBs) or less of the SFN can be included in the MIB.

[0077] In another example, if there are ten bits in total for the SFN of the MIB, then 3 Least Signification Bits (LSBs) could be not signaled in the transmission burst for the SFN of the MIB.

[0078] In other examples, a CAS subframe can be transmitted every 10 ms at subframe # 0. The PBCH can be transmitted in the CAS subframe at every 10 ms periodicity and change at every 40 ms. Thus, eight MSBs or less of the SFN or SFN indication can be signaled in the MIB as in the legacy.

[0079] In other cases, six MSBs of the SFN can be signaled in the MIB where the MIB is transmitted every 40 ms and refreshed / changed with a refresh periodicity / change periodicity at every 160 ms. As such, two or more LSBs could be not signaled out of the total number of bits for SFN signaling in the MIB.

[0080] Thus, these example aspects can save space and efficiency for single frequency network signaling on for MBMS transmissions on 1 00% MBMS configurations where all subframes are MBMS subframes without unicast date or non-MBMS subframes, including the CAS subframe in the 100% MBMS subframes.

[0081] FIG. 6 illustrates an example of DL transmission and associated periodicity for MBSFN configurations at DL transmission 600 without CAS and DL transmission 602 with CAS. While the DL transmission 602 can represent the system information acquisition delay for 100% MBSFN configuration case and the DL transmission 600 can represent the case of less than 1 00% MBSFN configurations, in which the DL transmission 602 delay for system information acquisition delay periodicity can be four times longer than the DL transmission 600. In other words, the system information acquisition delay for DL transmission 600 can be four times shorter than the DL transmission 602.

[0082] Each PBCH period can be a set of ten subframes of a frame, for example, in the DL transmissions 600, 602. For example, the frames can initiate with the CAS subframe located in the first subframe or at subframe # 0. The cyclic prefix (CP) of each transmission can be extended so as to provide a longer CP duration with a shorter spacing (e.g., 7.5 kHz) to further support MBSFNs from various eNBs. A longer CP duration can be helpful for the case of a multipath environment where there is multiple delayed symbol propagation over different transmitters for instance with extended CPs. As such, by having this longer CP more multipath signals can be combined with a larger delay profile than with shorter CPs. With a double CP duration more signals be combined falling within this delay length.

[0083] For these reasons, the shorter subcarrier spacing in this MBMS in LTE can be implemented with the aspects / embodiments described herein because of the so called single frequency network feature, which is referred to as the MBSFN. The reason it is called the MBSFN because different than the unicast data transmission for the MBMS multiple base stations can transmit the same data, at the same time, in the same frequency. So the signals transmitted from different base stations, for example, can be combined at the UE side. Then with the single frequency network there is basically no cell edge UE problem as the UE goes towards the edge of the cell and it can combine multiple signals from other base stations. Embodiments and aspects herein can provide this SFN network structures to provide more uniform TV service experience throughout a geographical area.

[0084] In a legacy MBMS, there is a limitation, for example, where in about 8 frames of a transmission burst consisting of ten subframes each, there is at most six subframes that can be assigned as MBSFN subframes. These MBSFN subframes can transmit the physical multicast channel (PMCH) that conveys the MBMS data. Then the rest of the four subframes are not allowed to be assigned as MBSFN subframe, which means that they are just normal LTE subframes, like for the unicast data transmission, or non- MBSFN subframes. This can be represented by the transmission 600, for example. Further, within this MBSFN subframe, in the beginning of the first subframe, one or more symbols can be assigned for the unicast control region such as the PBCH. The control information can be utilized for the other non-MBSFN subframes, and then within the MBSFN subframe the rest of the symbols, other than the unicast control region, can be used as the MBMS transmission for PMCH, for example.

[0085] In the 100% MBMS subframe configuration, for example, as in DL

transmission 602, there would be no non-MBSFN subframes because there is little use of the unicast control region within the MBSFN subframes for broadcast TV, for example. The network is then operable as a dedicated MBSFN carrier if the frame is configured with the 100%, and there is no unicast control region. In fact, the network (e.g., eNB / gNB) can remove this unicast control region entirely because it has no use at all and it also has a much shorter subcarrier spacing basically such that the one symbol duration can be equal to about 1 ms as the duration of one subframe. This can equate to a 14 times increase of the symbol duration for the FeMBMS feature, which can further extend the coverage and the spectrum or spectral efficiency in the DL transmission 602 with CAS as opposed to the DL transmission 600 transmitted without the CAS subframe.

[0086] In an aspect / embodiment, the DL transmission 600 or 602 can be PBCH / PMCH transmissions. In some cases, for less than 100% MBSFN configuration (e.g., transmission 600), the legacy synchronization and the system information acquisition procedures can be reused based on subframe #0 and #5. In other words, PBCH can be transmitted in the legacy way as with DL transmission 600, for example, PBCH transmission period of 10 ms and MIB refresh period of 40 ms. As depicted with DL transmission 602, for the case of 100% MBSFN subframe configuration, PBCH can be transmitted in CAS. As such, the PBCH transmission period can be 40 ms and MIB refresh period can be 160 ms.

[0087] In one example, the CAS periodicity can be maintained to be equal to the legacy PBCH transmission, the PBCH / PMCH acquisition delay and the UE complexity would likely not be impacted compared to the less than 100% MBSFN configuration.

[0088] In another embodiment, the CAS subframe can be transmitted in a single frequency network manner among various different eNBs / gNBs / base stations (e.g., 500) transmitting the eMBMS signal or transmission burst with multiple frames having multiple subframes each. A particular cell identifier (ID) can be reserved for this purpose by the eNB 500, for example. In order words, participating eNBs can then use the reserved cell ID commonly for CAS transmission, or MBMS transmission with CAS subframes, corresponding N_ID(2) for PSS, N_ID(1 ) for SSS, and Cell ID for one or more of: PDCCH, PDSCH, or PBCH transmissions. In this scenario, CAS may be transmitted with a single antenna port.

[0089] In other embodiments, a CAS subframe can be generated / transmitted, received / processed every 10 ms at subframe # 0. PBCH is transmitted in CAS, for example, every 10 ms and can change at every 40 ms. Thus, eight MSBs or less of the SFN can be signaled in MIB, and thus reduce the indication by a number of LSBs (e.g., two or more).

[0090] As stated above, the reception of the CAS or CAS subframe can be utilized between the UE device 400, for example, one or more eNBs / gNBs in LTE, 5G, or other communication. The CAS subframe can be transmitted according to the SFN mod X = Y, where X is any positive integer and Y is any positive integer equal to or smaller than X. X can be a number of times that the CAS subframe is transmitted or repeated once at each of X frames, while Y can be the offset from the start of the frame.

[0091] For example, X can be one and SFN mod X = zero, this means that the CAS subframe is repeated every one frame and offset from the start of the frame by zero, as represented in DL transmission 600 without a CAS subframe.

[0092] In another example, if Y is five and X is two, this means that every 20 ms (or second frame) at the fifth subframe within the frame the PBCH is being transmitted when carried by the CAS subframe for example. Thus, the expression SFN mod X = Y is general enough to cover any periodic configuration.

[0093] In other embodiments / examples, a CAS subframe can be transmitted every 20 ms at subframe # 0, for example, SFN mod 2=Y, where Y is 0 or 1 . Y can be hard coded in the specifications, and thus no need to be signaled. PBCH can be transmitted in CAS, for example, every 20 ms and can change at every 80 ms. Thus, 7 MSB of the SFN can be signaled in MIB.

[0094] Alternatively, or additionally, 6 MSB of the SFN can be signaled in MIB. The refresh periodicity / change periodicity of the MIB can be about 1 60 ms, while the PBCH period can be about 40 ms. As such, in the MIB if there is a total of ten bits, for example, to indicate the system frame number, but in DL transmission 602 this MIB is refreshed every 40 ms. In contrast, within this 40 ms in the legacy system of transmission 600 the repeated information is actually being transmitted at each subframe with the MIB at 4n, 4n+1 , 4n+2, 4n+3, but the transmission cannot indicate the subframe (or system frame number / SFN) within the MIB because the content within the MIB is identical over these four transmissions, as they are repeated. So for the MIB in the DL transmission 602, the eNB / gNB only transmits only 8 MSBs or less (e.g., six) of the MBSFN, and then two bits or more are not signaled. As such, only 8 MSBs or less are transmitted to indicate that it is 4n, 4n and 4n, where the 1 , 2, 3 is not indicated because we are transmitting the same information as we are in the set 4n as in any other following repeated transmissions.

[0095] Further, with the CAS subframes of the DL transmission burst 602 if the CAS subframe is generated / transmitted every four frames (e.g., every 40 ms) and then it is repeated over four times, this means that after 1 60 ms the MIB content can be refreshed / updated / changed. So during the CAS subframe transmission over the 160 ms, over four times repetition, the SFN number cannot be transmitted within. Thus, further reduction of the MIBs to indicate the SFN can be afforded for extra space. As such, in this example six MSBs of the SFN can be signaled in the MIB. Here, the frame number is zero, and repetition X is four, so that SFN mod X = zero. So the MIB can be transmitted every fourth frame and then it can change in every 16 frames. The CAS can be transmitted in subframe zero with a periodicity of 40 ms, for example.

[0096] When less than all of the SFN indication bits of the MIB are transmitted in the CAS subframes, as in DL transmission 602, for example, additional spacing can be allocated to transmission of MBMS. The CAS subframe can comprise PSS / SSS, PBCH, PDSCH, or PDCCH, and be transmitted from a single antenna port, for example, on a FEMBMS carrier. The MBMS data for broadcast data, for example, can use a different subcarrier spacing than the CAS subframe, and thus, cannot necessarily be multiplexed with PMCH. As such, if the reserved subframes like in the DL transmission 600 having the MIB are increased, this fundamentally means that broadcast operators cannot transmit as many TV channels as they may wish with an increased number of dedicated subframes being reserved. As such, in the transmission 602 the number of subframes for the CAS can be minimized for cost as one of the motivations /

advantages to the aspects embodiments herein.

[0097] In an aspect, before acquiring the system information, a UE (e.g., 400) may be ignorant about the MBSFN configuration, as to whether it is 100% or less than 100%, but can detect or determine this dynamically. Thus, the UE can assume two possible PBCH transmission periodicities, as in DL transmission 600 and 602, during the initial cell attachment. This can increase the UE complexity in terms of the number of hypothesis testing for detecting PBCH especially when the UE fails decoding with single shot (or clear channel assessment) and has to perform PBCH combining.

[0098] In one embodiment, a UE can autonomously detect and distinguish the 100% and less than 100% MBSFN configurations via / based on a detected PSS/SSS periodicity, or based on signaling parameters such as periodicity of the PSS / SSS, for example. This can be done in the standalone situation where the FeMBMS carrier or MBMS carrier is not a secondary cell as in the aspects / embodiments described above as an SDL carrier, for example, but is a primary carrier.

[0099] Alternatively or additionally, this can be signaled to the UE by Radio

Resource Control (RRC) signaling or other higher layer signaling. Where the FeMBS carrier is not a secondary cell, the UE can be configured by the dedicated RRC signaling through the Pcell that this is a FeMBMS carrier with the 100% configuration or not. [00100] In a first set of examples to the various aspects / embodiments herein, the below examples are envisioned further.

[00101 ] Example 1 may include a method comprising: autonomously detecting and distinguishing, by a UE, the 100% and less than 100% MBSFN configurations via, for example, detected PSS/SSS periodicity.

[00102] Example 2 may include the method of example 1 and/or some other examples herein, wherein the CAS subframe is transmitted in a single frequency network manner among the eNBs transmitting the eMBMS signal, wherein a particular cell ID is reserved for this purpose; and participating eNBs use the reserved cell ID commonly for CAS transmission, corresponding N_ID(2) for PSS, N_ID(1 ) for SSS, and Cell ID for PDCCH, PDSCH, PBCH transmission, and wherein the CAS is transmitted with single antenna port.

[00103] Example 3 may include the method of examples 1 -2 and/or some other examples herein, wherein the CAS subframe is transmitted every 1 0 ms at subframe #0; PBCH is transmitted in CAS, for example, every 10 ms and can change at every 40 ms, and 8 MSB of the SFN is signaled in MIB.

[00104] Example 4 may include the method of examples 1 -3 and/or some other examples herein, wherein the CAS subframe is transmitted every 20 ms at subframe #0, for example, SFN mod2=Y, where Y is 0 or 1 . Y can be hard coded in the spec and thus no need to be signaled; PBCH is transmitted in CAS, for example, every 20 ms and can change at every 80 ms, and 7 MSB of the SFN is signaled in MIB.

[00105] Example 5 may include the method of examples 1 -4 and/or some other examples herein, wherein, for extended CP, two times repetition mapping is applied for PBCH in CAS with additional symbols #2, #3 in slot 0 and #4, #5 in slot 1 .

[00106] Example 6 may include the method of examples 1 -5 and/or some other examples herein, wherein, for extended CP, PBCH in CAS is extended to 5 symbols by including either symbol 3 in slot 0, symbol 4 in slot 1 , or symbol 5 in slot 1 .

[00107] Example 7 may include the method of examples 1 -6 and/or some other examples herein, wherein, for extended CP, PBCH in CAS is extended to 6 symbols by including any 2 symbols from symbol 3 in slot 0, symbol 4 in slot 1 , and symbol 5 in slot 1 .

[00108] Example 8 may include the method of examples 1 -7 and/or some other examples herein, wherein, for extended CP, PBCH in CAS is extended to 7 symbol occupying symbol 3 in slot 0 and symbol 0-5 in slot 1 . [00109] Example 9 may include the method of examples 1 -8 and/or some other examples herein, wherein, for normal CP, two times repetition mapping is applied for PBCH in CAS.

[00110] Example 10 may include the method of examples 1 -9 and/or some other examples herein, wherein, for normal CP, PBCH symbol extension is applied.

[00111 ] Example 1 1 may include an apparatus comprising means to perform one or more elements of a method described in or related to any of examples 1 -10, or any other method or process described herein.

[00112] Example 12 may include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of a method described in or related to any of examples 1 -10, or any other method or process described herein.

[00113] Example 13 may include an apparatus comprising logic, modules, and/or circuitry to perform one or more elements of a method described in or related to any of examples 1 -1 0, or any other method or process described herein.

[00114] Example 14 may include a method, technique, or process as described in or related to any of examples 1 -10, or portions or parts thereof.

[00115] Example 15 may include an apparatus comprising: one or more processors and one or more computer readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform the method, techniques, or process as described in or related to any of examples 1 -10, or portions thereof.

[00116] Example 16 may include a method of communicating in a wireless network as shown and described herein.

[00117] Example 17 may include a system for providing wireless communication as shown and described herein.

[00118] Example 18 may include a device for providing wireless communication as shown and described herein.

[00119] While the methods described within this disclosure are illustrated in and described herein as a series of acts or events, it will be appreciated that the illustrated ordering of such acts or events are not to be interpreted in a limiting sense. For example, some acts can occur in different orders and/or concurrently with other acts or events apart from those illustrated and/or described herein. In addition, not all illustrated acts can be required to implement one or more aspects or embodiments of the description herein. Further, one or more of the acts depicted herein can be carried out in one or more separate acts and/or phases.

[00120] Referring to FIG. 7, illustrated is an example process flow 700 for transmitting / receiving / processing / generating DL transmissions with CAS subframes in various frames with an eNB / gNB or UE.

[00121 ] At 702, the process flow 700 can include processing / generating a cell acquisition subframe (CAS) subframe of a downlink (DL) transmission burst comprising a multibroadcast multicast service (MBMS) subframe configuration.

[00122] At 704, the process flow 700 can include processing / generating a master information block (MIB) in the CAS subframe.

[00123] In other embodiments, processing the CAS subframe can be based on a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X. The CAS subframe in a plurality of frames can have a periodicity of about 40 ms and the MIB have a refresh periodicity at about 160 ms, while be located at subframe # 0 of a frame. The CAS subframe of the DL transmission burst can include a PBCH, or the MIB can be provided by the PBCH in every CAS. The CAS subframe can be based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non- MBSFN) subframe.

[00124] As used herein, the term "circuitry" can refer to, be part of, or include an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and/or memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality. In some embodiments, the circuitry can be implemented in, or functions associated with the circuitry can be implemented by, one or more software or firmware modules. In some embodiments, circuitry can include logic, at least partially operable in hardware.

[00125] As it employed in the subject specification, the term "processor" can refer to substantially any computing processing unit or device including, but not limited to including, single-core processors; single-processors with software multithread execution capability; multi-core processors; multi-core processors with software multithread execution capability; multi-core processors with hardware multithread technology;

parallel platforms; and parallel platforms with distributed shared memory. Additionally, a processor can refer to an integrated circuit, an application specific integrated circuit, a digital signal processor, a field programmable gate array, a programmable logic controller, a complex programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions and/or processes described herein. Processors can exploit nano-scale architectures such as, but not limited to, molecular and quantum-dot based transistors, switches and gates, in order to optimize space usage or enhance performance of mobile devices. A processor can also be implemented as a combination of computing processing units.

[00126] In the subject specification, terms such as "store," "data store," data storage," "database," and substantially any other information storage component relevant to operation and functionality of a component and/or process, refer to "memory

components," or entities embodied in a "memory," or components including the memory. It is noted that the memory components described herein can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.

[00127] By way of illustration, and not limitation, nonvolatile memory, for example, can be included in a memory, non-volatile memory (see below), disk storage (see below), and memory storage (see below). Further, nonvolatile memory can be included in read only memory, programmable read only memory, electrically programmable read only memory, electrically erasable programmable read only memory, or flash memory.

Volatile memory can include random access memory, which acts as external cache memory. By way of illustration and not limitation, random access memory is available in many forms such as synchronous random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory, Synchlink dynamic random access memory, and direct Rambus random access memory. Additionally, the disclosed memory components of systems or methods herein are intended to include, without being limited to including, these and any other suitable types of memory.

[00128] Examples can include subject matter such as a method, means for performing acts or blocks of the method, at least one machine-readable medium including instructions that, when performed by a machine cause the machine to perform acts of the method or of an apparatus or system for concurrent communication using multiple communication technologies according to embodiments and examples described herein.

[00129] In a second set of examples to the various aspects / embodiments herein, the below examples are envisioned further.

[00130] Example 1 is an apparatus configured to be employed in a user equipment (UE) comprising: one or more processors configured to: process a multibroadcast multicast service (MBMS) subframe configuration of a downlink (DL) transmission burst comprising a cell acquisition subframe (CAS) subframe; and process a master information block (MIB) from the CAS subframe; a radio frequency (RF) interface configured to receive the DL transmission burst.

[00131 ] Example 2 includes the subject matter of Example 1 , wherein the DL transmission burst comprises the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00132] Example 3 includes the subject matter of any one of Examples 1 -2, including or omitting any elements as optional, wherein the DL transmission burst comprises the CAS subframe in subframe # 0 with a period of about 40 milliseconds (ms).

[00133] Example 4 includes the subject matter of any one of Examples 1 -3, including or omitting any elements as optional, wherein the DL transmission burst comprises the CAS subframe in a plurality of frames at a periodicity of about 40 ms, and wherein the CAS subframe comprises the MIB with a change periodicity, or a refresh periodicity, of about 160 ms.

[00134] Example 5 includes the subject matter of any one of Examples 1 -4, including or omitting any elements as optional, wherein the MIB comprises six most significant bits (MSB) of a system frame number (SFN), and the MIB is provided by a physical broadcast channel in the CAS subframe.

[00135] Example 6 includes the subject matter of any one of Examples 1 -5, including or omitting any elements as optional, wherein the radio frequency (RF) interface is further configured to provide the DL transmission burst on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier.

[00136] Example 7 includes the subject matter of any one of Examples 1 -6, including or omitting any elements as optional, wherein the CAS subframe includes at least one of: a primary synchronization signal (PSS) periodicity, a secondary synchronization signal (SSS), a cell specific reference signal (CRS), a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH).

[00137] Example 8 includes the subject matter of any one of Examples 1 -7, including or omitting any elements as optional, wherein the one or more processors are further configured to: determine an SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB.

[00138] Example 9 includes the subject matter of any one of Examples 1 -8, including or omitting any elements as optional, wherein the one or more processors are further configured to: process the CAS subframe of the DL transmission burst based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non-MBSFN) subframe.

[00139] Example 10 includes the subject matter of any one of Examples 1 -9, including or omitting any elements as optional, wherein the MBMS subframe

configuration comprises 100% MBMS subframes within a frame of the DL transmission burst.

[00140] Example 1 1 includes the subject matter of any one of Examples 1 -10, wherein the one or more processors are further configured to: determine whether the MBMS subframe configuration of the DL transmission burst comprises a 100% multicast-broadcast single frequency network (MBSFN) configuration or a less than 100% MBSFN configuration, based on at least one of: a PSS periodicity or a SSS periodicity of the DL transmission burst.

[00141 ] Example 12 includes the subject matter of any one of Examples 1 -7, including or omitting any elements as optional, wherein the one or more processors are further configured to: process an indication of whether the MBMS subframe configuration of the DL transmission burst comprises a 100% MBSFN configuration or a less than 1 00% MBSFN configuration via a Radio Resource Control (RRC) signal in a different carrier than a frame with the CAS subframe of the DL transmission burst on a FeMBMS carrier.

[00142] Example 13 is an apparatus configured to be employed in an evolved NodeB (eNB) or a next generation NodeB (gNB) comprising: one or more processors configured to: generate a downlink (DL) transmission with a multibroadcast multicast service (MBMS) subframe configuration comprising a frame with only MBMS subframes including a cell acquisition subframe (CAS) subframe; a radio frequency (RF) interface configured to send, to RF circuitry, data for the DL transmission.

[00143] The apparatus of claim 14, wherein the one or more processors are further configured to: generate the DL transmission by generating the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00144] Example 15 includes the subject matter of any one of Examples 1 3-14, including or omitting any elements as optional, wherein the one or more processors are further configured to: generate the DL transmission based on a periodicity of the CAS subframe comprising about 40 milliseconds (ms), the CAS subframe located at subframe # 0 of the frame, and an MIB of the CAS subframe having a refresh rate or update rate at about 1 60 ms.

[00145] Example 16 includes the subject matter of any one of Examples 1 3-15, including or omitting any elements as optional, wherein the one or more processors are further configured to: generate an SFN indication in a master information block (MIB) of the CAS subframe with 8 bits or less of a total number of bits forming the CAS subframe.

[00146] Example 17 includes the subject matter of any one of Examples 1 3-16, including or omitting any elements as optional, wherein the one or more processors are further configured to: adjust the SFN indication in the MIB based on a PBCH

transmission periodicity and a refresh periodicity of the MIB.

[00147] Example 18 includes the subject matter of any one of Examples 1 3-18, including or omitting any elements as optional, wherein the one or more processors are further configured to: generate a physical broadcast channel (PBCH) transmission with a PBCH transmission periodicity of about 20 ms, and refresh or change a MIB of the CAS subframe with a refresh periodicity of about 80 ms, with 7 most significant bits or less of the MIB indicating an SFN of the CAS subframe.

[00148] Example 19 includes the subject matter of any one of Examples 1 3-19, including or omitting any elements as optional, wherein the radio frequency (RF) interface is further configured to provide the DL transmission on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier, and the RF circuitry is configured to transmit the DL transmission with the CAS subframe on a single antenna port and simultaneously as one or more other base stations, one or more other eNBs, or one or more other gNBs on the SDL carrier or the FeMBMS carrier based on a reserved cell identifier (ID), corresponding to a N_ID(2) for a primary synchronization signal (PSS), N_ID(1 ) for a secondary synchronization signal, and a Cell ID for at least one of: a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), or a PBCH transmission.

[00149] Example 20 is a computer-readable storage medium storing executable instructions that, in response to execution, cause one or more processors of a user equipment (UE) to perform operations comprising: processing a cell acquisition subframe (CAS) subframe of a downlink (DL) transmission burst comprising a multibroadcast multicast service (MBMS) subframe configuration; deriving a master information block (MIB) from the CAS subframe; and acquiring communication parameters to communicate on a corresponding carrier of the DL transmission based on the MIB.

[00150] Example 21 includes the subject matter of Example 20, including or omitting any elements as optional, wherein the operations further comprise: processing the CAS subframe based on a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00151 ] Example 22 includes the subject matter of any one of Examples 20-21 , including or omitting any elements as optional, wherein the operations further comprise: processing the CAS subframe in a plurality of frames at a periodicity of about 40 ms and the MIB with a refresh periodicity at about 160 ms, and at subframe # 0.

[00152] Example 23 includes the subject matter of any one of Examples 20-22, including or omitting any elements as optional, wherein the operations further comprise: determining an SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB, wherein the MIB is carried on the PBCH.

[00153] Example 24 includes the subject matter of any one of Examples 20-23, including or omitting any elements as optional, wherein the operations further comprise: processing the CAS subframe of the DL transmission burst based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non-MBSFN) subframe.

[00154] Example 24 includes the subject matter of any one of Examples 20-23, including or omitting any elements as optional, wherein the operations further comprise: determining whether the subframe configuration of the DL transmission burst comprises a 100% MBSFN configuration or a less than 100% MBSFN configuration, based on at least one of: a PSS periodicity or a SSS periodicity of the DL transmission burst, wherein the 1 00% MBSFN configuration comprises all MBMS subframes, including the CAS subframe.

[00155] Example 26 is a computer-readable storage medium storing executable instructions that, in response to execution, cause one or more processors of an evolved NodeB (eNB) or a next generation NodeB (gNB) to perform operations comprising: generating a downlink (DL) transmission with a multibroadcast multicast service

(MBMS) subframe configuration comprising a frame with only MBMS subframes including a cell acquisition subframe (CAS) subframe; and transmitting the DL transmission.

[00156] Example 27 includes the subject matter of Example 26, including or omitting any elements as optional, wherein the operations further comprise: generating the DL transmission by generating the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00157] Example 28 includes the subject matter of any one of Examples 26-27, including or omitting any elements as optional, wherein the operations further comprise: generating the DL transmission based on a periodicity of the CAS subframe comprising about 40 milliseconds (ms), the CAS subframe located at subframe # 0 of the frame, and an MIB of the CAS subframe having a refresh rate or update rate at about 160 ms.

[00158] Example 29 includes the subject matter of Examples 26-29, including or omitting any elements as optional, wherein the operations further comprise: generating an SFN indication in a master information block (MIB) of the CAS subframe with 8 bits or less of a total number of bits forming the CAS subframe.

[00159] Example 30 includes the subject matter of any one of Examples 26-30, including or omitting any elements as optional, wherein the operations further comprise: adjusting the SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB.

[00160] Example 31 includes the subject matter of any one of Examples 26-30, including or omitting any elements as optional, wherein the operations further comprise: generating a physical broadcast channel (PBCH) transmission with a PBCH

transmission periodicity of about 20 ms, and refresh or change a MIB of the CAS subframe with a refresh periodicity of about 80 ms, with 7 most significant bits or less of the MIB indicating an SFN of the CAS subframe.

[00161 ] Example 32 includes the subject matter of any one of Examples 26-31 , including or omitting any elements as optional, wherein the radio frequency (RF) interface is further configured to provide the DL transmission on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier, and the RF circuitry is configured to transmit the DL transmission with the CAS subframe on a single antenna port and simultaneously as one or more other base stations, one or more other eNBs, or one or more other gNBs on the SDL carrier or the FeMBMS carrier based on a reserved cell identifier (ID), corresponding to a N_ID(2) for a primary synchronization signal (PSS), N_ID(1 ) for a secondary synchronization signal, and a Cell ID for at least one of: a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), or a PBCH transmission.

[00162] Example 33 is an apparatus of a user equipment (UE) comprising: means for processing a cell acquisition subframe (CAS) subframe of a downlink (DL) transmission burst comprising a multibroadcast multicast service (MBMS) subframe configuration; and means for deriving a master information block (MIB) from the CAS subframe; and means for acquiring communication parameters to communicate on a corresponding carrier of the DL transmission based on the MIB.

[00163] Example 34 includes the subject matter of Example 33, including or omitting any elements as optional, further comprising: means for processing the CAS subframe based on a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00164] Example 35 includes the subject matter of any one of Examples 33-34, including or omitting any elements as optional, further comprising: means for processing the CAS subframe in a plurality of frames at a periodicity of about 40 ms and the MIB with a refresh periodicity at about 1 60 ms, and at subframe # 0.

[00165] Example 36 includes the subject matter of Example 33-35, including or omitting any elements as optional, further comprising: means for determining an SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB, wherein the MIB is carried on the PBCH.

[00166] Example 37 includes the subject matter of Example 33-36, including or omitting any elements as optional, further comprising: means for processing the CAS subframe of the DL transmission burst based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non-MBSFN) subframe.

[00167] Example 38 includes the subject matter of Example 33-37, including or omitting any elements as optional, further comprising: means for determining whether the subframe configuration of the DL transmission burst comprises a 100% MBSFN configuration or a less than 100% MBSFN configuration, based on at least one of: a PSS periodicity or a SSS periodicity of the DL transmission burst, wherein the 1 00% MBSFN configuration comprises all MBMS subframes, including the CAS subframe.

[00168] Example 39 is an apparatus of an evolved NodeB (eNB) or a next generation NodeB (gNB) to perform operations comprising: means for generating a downlink (DL) transmission with a multibroadcast multicast service (MBMS) subframe configuration comprising a frame with only MBMS subframes including a cell acquisition subframe (CAS) subframe; and means for transmitting the DL transmission.

[00169] Example 40 includes the subject matter of Example 39, including or omitting any elements as optional, further comprising: means for generating the DL transmission by generating the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

[00170] Example 41 includes the subject matter of Example 39-40, including or omitting any elements as optional, further comprising: means for generating the DL transmission based on a periodicity of the CAS subframe comprising about 40 milliseconds (ms), the CAS subframe located at subframe # 0 of the frame, and an MIB of the CAS subframe having a refresh rate or update rate at about 160 ms.

[00171 ] Example 42 includes the subject matter of Example 39-41 , including or omitting any elements as optional, further comprising: means for generating an SFN indication in a master information block (MIB) of the CAS subframe with 8 bits or less of a total number of bits forming the CAS subframe.

[00172] Example 43 includes the subject matter of Example 39-42, including or omitting any elements as optional, further comprising: means for adjusting the SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB. [00173] Example 44 includes the subject matter of Example 39-43, including or omitting any elements as optional, further comprising: means for generating a physical broadcast channel (PBCH) transmission with a PBCH transmission periodicity of about 20 ms, and refresh or change a MIB of the CAS subframe with a refresh periodicity of about 80 ms, with 7 most significant bits or less of the MIB indicating an SFN of the CAS subframe.

[00174] Example 45 includes the subject matter of Example 39-44, including or omitting any elements as optional,, wherein the radio frequency (RF) interface is further configured to provide the DL transmission on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier, and the RF circuitry is configured to transmit the DL transmission with the CAS subframe on a single antenna port and simultaneously as one or more other base stations, one or more other eNBs, or one or more other gNBs on the SDL carrier or the FeMBMS carrier based on a reserved cell identifier (ID), corresponding to a N_ID(2) for a primary synchronization signal (PSS), N_ID(1 ) for a secondary synchronization signal, and a Cell ID for at least one of: a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), or a PBCH transmission.

[00175] It is to be understood that aspects described herein can be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media or a computer readable storage device can be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD- ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or other tangible and/or non-transitory medium, that can be used to carry or store desired information or executable instructions. Also, any connection is properly termed a computer-readable medium. For example, if 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 technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.

Combinations of the above should also be included within the scope of computer- readable media.

[00176] Various illustrative logics, logical blocks, modules, and circuits described in connection with aspects disclosed herein can be implemented or performed 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform functions described herein. A general-purpose processor can be a microprocessor, but, in the alternative, processor can be any conventional processor, controller, microcontroller, or state machine. A processor can 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. Additionally, at least one processor can comprise one or more modules operable to perform one or more of the s and/or actions described herein.

[00177] For a software implementation, techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform functions described herein. Software codes can be stored in memory units and executed by processors. Memory unit can be implemented within processor or external to processor, in which case memory unit can be communicatively coupled to processor through various means as is known in the art. Further, at least one processor can include one or more modules operable to perform functions described herein.

[00178] Techniques described herein can be used for various wireless communication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can implement a radio technology such as Universal Terrestrial Radio Access (UTRA), CDMA1800, etc. UTRA includes Wideband-CDMA (W-CDMA) and other variants of CDMA. Further, CDMA1800 covers IS-1800, IS-95 and IS-856 standards. A TDMA system can implement a radio technology such as Global System for Mobile

Communications (GSM). An OFDMA system can implement a radio technology such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.1 1 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.18, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS). 3GPP Long Term Evolution (LTE) is a release of UMTS that uses E-UTRA, which employs OFDMA on downlink and SC- FDMA on uplink. UTRA, E-UTRA, UMTS, LTE and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). Additionally, CDMA1800 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). Further, such wireless communication systems can additionally include peer-to-peer (e.g., mobile-to-mobile) ad hoc network systems often using unpaired unlicensed spectrums, 802. xx wireless LAN,

BLUETOOTH and any other short- or long- range, wireless communication techniques.

[00179] Single carrier frequency division multiple access (SC-FDMA), which utilizes single carrier modulation and frequency domain equalization is a technique that can be utilized with the disclosed aspects. SC-FDMA has similar performance and essentially a similar overall complexity as those of OFDMA system. SC-FDMA signal has lower peak-to-average power ratio (PAPR) because of its inherent single carrier structure. SC-FDMA can be utilized in uplink communications where lower PAPR can benefit a mobile terminal in terms of transmit power efficiency.

[00180] Moreover, various aspects or features described herein can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, key drive, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data. Additionally, a computer program product can include a computer readable medium having one or more instructions or codes operable to cause a computer to perform functions described herein.

[00181 ] Communications media embody computer-readable instructions, data structures, program modules or other structured or unstructured data in a data signal such as a modulated data signal, e.g., a carrier wave or other transport mechanism, and includes any information delivery or transport media. The term "modulated data signal" or signals refers to a signal that has one or more of its characteristics set or changed in such a manner as to encode information in one or more signals. By way of example, and not limitation, communication media include wired media, such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared and other wireless media.

[00182] Further, the actions of a method or algorithm described in connection with aspects disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or a combination thereof. A software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium can be coupled to processor, such that processor can read information from, and write information to, storage medium. In the alternative, storage medium can be integral to processor. Further, in some aspects, processor and storage medium can reside in an ASIC. Additionally, ASIC can reside in a user terminal. In the alternative, processor and storage medium can reside as discrete components in a user terminal. Additionally, in some aspects, the s and/or actions of a method or algorithm can reside as one or any combination or set of codes and/or instructions on a machine-readable medium and/or computer readable medium, which can be incorporated into a computer program product.

[00183] The above description of illustrated embodiments of the subject disclosure, including what is described in the Abstract, is not intended to be exhaustive or to limit the disclosed embodiments to the precise forms disclosed. While specific embodiments and examples are described herein for illustrative purposes, various modifications are possible that are considered within the scope of such embodiments and examples, as those skilled in the relevant art can recognize.

[00184] In this regard, while the disclosed subject matter has been described in connection with various embodiments and corresponding Figures, where applicable, it is to be understood that other similar embodiments can be used or modifications and additions can be made to the described embodiments for performing the same, similar, alternative, or substitute function of the disclosed subject matter without deviating therefrom. Therefore, the disclosed subject matter should not be limited to any single embodiment described herein, but rather should be construed in breadth and scope in accordance with the appended claims below.

[00185] In particular regard to the various functions performed by the above described components (assemblies, devices, circuits, systems, etc.), the terms (including a reference to a "means") used to describe such components are intended to correspond, unless otherwise indicated, to any component or structure which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the disclosure. In addition, while a particular feature can have been disclosed with respect to only one of several implementations, such feature can be combined with one or more other features of the other implementations as can be desired and advantageous for any given or particular application.

Claims

CLAIMS What is claimed is:

1 . An apparatus configured to be employed in a user equipment (UE) comprising: one or more processors configured to:

process a multibroadcast multicast service (MBMS) subframe configuration of a downlink (DL) transmission burst comprising a cell acquisition subframe (CAS) subframe; and

process a master information block (MIB) from the CAS subframe;

a radio frequency (RF) interface configured to receive the DL transmission burst.

2. The apparatus of claim 1 , wherein the DL transmission burst comprises the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

3. The apparatus of claim 2, wherein the DL transmission burst comprises the CAS subframe in subframe # 0 with a period of about 40 milliseconds (ms).

4. The apparatus of claim 2, wherein the DL transmission burst comprises the CAS subframe in a plurality of frames at a periodicity of about 40 ms, and wherein the CAS subframe comprises the MIB with a change periodicity, or a refresh periodicity, of about 160 ms.

5. The apparatus of claim 4, wherein the MIB comprises six most significant bits (MSB) of a system frame number (SFN), and the MIB is provided by a physical broadcast channel in the CAS subframe.

6. The apparatus of any one of claims 1 -5, wherein the radio frequency (RF) interface is further configured to provide the DL transmission burst on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier.

7. The apparatus of any one of claims 1 -6, wherein the CAS subframe includes at least one of: a primary synchronization signal (PSS) periodicity, a secondary synchronization signal (SSS), a cell specific reference signal (CRS), a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH).

8. The apparatus of any one of claims 1 -7, wherein the one or more processors are further configured to:

determine an SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB.

9. The apparatus of any one of claims 1 -8, wherein the one or more processors are further configured to:

process the CAS subframe of the DL transmission burst based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non-MBSFN) subframe.

10. The apparatus of any one of claims 1 -9, wherein the MBMS subframe

1 1 . The apparatus of any one of claims 1 -10, wherein the one or more processors are further configured to:

determine whether the MBMS subframe configuration of the DL transmission burst comprises a 100% multicast-broadcast single frequency network (MBSFN) configuration or a less than 100% MBSFN configuration, based on at least one of: a PSS periodicity or a SSS periodicity of the DL transmission burst.

12. The apparatus of any one of claims 1 -1 1 , wherein the one or more processors are further configured to:

process an indication of whether the MBMS subframe configuration of the DL transmission burst comprises a 1 00% MBSFN configuration or a less than 100%

MBSFN configuration via a Radio Resource Control (RRC) signal in a different carrier than a frame with the CAS subframe of the DL transmission burst on a FeMBMS carrier.

13. An apparatus configured to be employed in an evolved NodeB (eNB) or a next generation NodeB (gNB) comprising:

one or more processors configured to:

generate a downlink (DL) transmission with a multibroadcast multicast service (MBMS) subframe configuration comprising a frame with only MBMS subframes including a cell acquisition subframe (CAS) subframe;

a radio frequency (RF) interface configured to send, to RF circuitry, data for the DL transmission.

14. The apparatus of claim 13, wherein the one or more processors are further configured to:

generate the DL transmission by generating the CAS subframe in a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

15. The apparatus of any one of claims 13-14, wherein the one or more processors are further configured to:

generate the DL transmission based on a periodicity of the CAS subframe comprising about 40 milliseconds (ms), the CAS subframe located at subframe # 0 of the frame, and an MIB of the CAS subframe having a refresh rate or update rate at about 160 ms.

16. The apparatus of any one of claims 13-15, wherein the one or more processors are further configured to:

generate an SFN indication in a master information block (MIB) of the CAS subframe with 8 bits or less of a total number of bits forming the CAS subframe.

17. The apparatus of claim 16, wherein the one or more processors are further configured to:

adjust the SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB.

18. The apparatus of any one of claims 13-17, wherein the one or more processors are further configured to:

generate a physical broadcast channel (PBCH) transmission with a PBCH transmission periodicity of about 20 ms, and refresh or change a MIB of the CAS subframe with a refresh periodicity of about 80 ms, with 7 most significant bits or less of the MIB indicating an SFN of the CAS subframe.

19. The apparatus of any one of claims 13-18, wherein the radio frequency (RF) interface is further configured to provide the DL transmission on a supplementary downlink (SDL) carrier or a further evolved / enhanced MBMS (FeMBMS) carrier, and the RF circuitry is configured to transmit the DL transmission with the CAS subframe on a single antenna port and simultaneously as one or more other base stations, one or more other eNBs, or one or more other gNBs on the SDL carrier or the FeMBMS carrier based on a reserved cell identifier (ID), corresponding to a N_ID(2) for a primary synchronization signal (PSS), N_ID(1 ) for a secondary synchronization signal, and a Cell ID for at least one of: a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), or a PBCH transmission.

20. A computer-readable storage medium storing executable instructions that, in response to execution, cause one or more processors of a user equipment (UE) to perform operations comprising:

processing a cell acquisition subframe (CAS) subframe of a downlink (DL) transmission burst comprising a multibroadcast multicast service (MBMS) subframe configuration;

deriving a master information block (MIB) from the CAS subframe; and acquiring communication parameters to communicate on a corresponding carrier of the DL transmission based on the MIB.

21 . The computer readable medium of claim 20, wherein the operations further comprise:

processing the CAS subframe based on a System Frame Number (SFN) of modulo (mod) X equal to Y (SFN mod X = Y), wherein X comprises any positive integer and Y comprises any positive integer equal to or smaller than X.

22. The computer readable medium of any one of claims 20-21 , wherein the operations further comprise:

processing the CAS subframe in a plurality of frames at a periodicity of about 40 ms and the MIB with a refresh periodicity at about 1 60 ms, and at subframe # 0.

23. The computer readable medium of claim 20, wherein the operations further comprise:

determining an SFN indication in the MIB based on a PBCH transmission periodicity and a refresh periodicity of the MIB, wherein the MIB is carried on the PBCH.

24. The computer readable medium of any one of claims 20-23, wherein the operations further comprise:

processing the CAS subframe of the DL transmission burst based on a periodicity that is different from other subframes within a frame of the DL transmission burst, and less than another frame being received / processed that comprises a unicast datum or a non-multicast broadcast single frequency network (non-MBSFN) subframe.

25. The computer readable medium of any one of claims 20-24, wherein the operations further comprise:

determining whether the subframe configuration of the DL transmission burst comprises a 100% MBSFN configuration or a less than 100% MBSFN configuration, based on at least one of: a PSS periodicity or a SSS periodicity of the DL transmission burst, wherein the 100% MBSFN configuration comprises all MBMS subframes, including the CAS subframe.