WO2018031132A1 - Configuration d'informations d'état de canal pour systèmes de communication mobiles - Google Patents

Configuration d'informations d'état de canal pour systèmes de communication mobiles Download PDF

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Publication number
WO2018031132A1
WO2018031132A1 PCT/US2017/039676 US2017039676W WO2018031132A1 WO 2018031132 A1 WO2018031132 A1 WO 2018031132A1 US 2017039676 W US2017039676 W US 2017039676W WO 2018031132 A1 WO2018031132 A1 WO 2018031132A1
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WIPO (PCT)
Prior art keywords
csi
partition
bandwidth configuration
bandwidth
circuitry
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PCT/US2017/039676
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English (en)
Inventor
Gang Xiong
Alexei Davydov
Wenting CHANG
Hong He
Yuan Zhu
Original Assignee
Intel IP Corporation
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Publication date
Application filed by Intel IP Corporation filed Critical Intel IP Corporation
Priority to CN201780042555.4A priority Critical patent/CN109478967B/zh
Publication of WO2018031132A1 publication Critical patent/WO2018031132A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • Various embodiments generally may relate to the field of wireless
  • Wireless or mobile communication involves wireless communication between two or more devices.
  • the communication requires resources to transmit data from one device to another and/or to receive data at one device from another.
  • Wireless communication typically has limited resources in terms of time and frequency. The utilization of these limited resources can impact communication data rate, reliability, latency and the like. If resources are misconfigured, then interference can occur, thereby degrading communication, reliability and the like. Additionally, if resources are underutilized or wasted, the data rate may be unnecessarily low.
  • FIG. 1 illustrates a block diagram of an example wireless communications network environment for a network device (e.g., a UE or an eNB) according to various aspects or embodiments.
  • a network device e.g., a UE or an eNB
  • FIG. 2 illustrates another block diagram of an example of wireless communications network environment for a network device (e.g., a UE or an eNB) according to various aspects or embodiments.
  • a network device e.g., a UE or an eNB
  • FIG. 3 another block diagram of an example of wireless communications network environment for network device (e.g., a UE or an eNB) with various interfaces according to various aspects or embodiments.
  • FIG. 4 is a diagram illustrating example partitions for a framework 400 for mobile communications.
  • FIG. 5 is a diagram illustrating CSI-RS configurations that utilize an entire partition bandwidth in accordance with an embodiment.
  • FIG. 6 depicts example configurations for periodicity and subframe offset that can be used to limit the monitoring by a UE.
  • FIG. 7 is a diagram illustrating CSI-RS configurations that utilize cross partition scheduling in accordance with an embodiment.
  • FIG. 8 is a diagram illustrating an example of CSI-RS resource
  • mapping/configuration 800 for primary and secondary partitions within a system bandwidth For mapping/configuration 800 for primary and secondary partitions within a system bandwidth.
  • FIG. 9 is a diagram illustrating CSI-RSs for primary and secondary partitions.
  • FIG. 10 is a flow diagram illustrating a method of configuring CSI-RS transmissions in accordance with an embodiment.
  • ком ⁇ онент can be a processor, a process running on a processor, a controller, an object, an executable, a program, a storage device, and/or a computer with a processing device.
  • 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.”
  • 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).
  • 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).
  • a component can be an apparatus with specific
  • 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.
  • circuitry may 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.
  • ASIC Application Specific Integrated Circuit
  • the circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules.
  • circuitry may include logic, at least partially operable in hardware.
  • 5G will evolve based on 3GPP LTE-Advanced with additional potential new Radio Access Technologies (RATs) to enrich people lives with better, simple and seamless wireless connectivity solutions.
  • RATs Radio Access Technologies
  • a 5G Flexible Radio Access Technologies may define a unified framework for the support of diverse requirements, applications and services, multiple frequency bands, multiple
  • a cell for mobile communication can be formed using reference signals to acquire channel-state information.
  • the reference signals for LTE, include channel state information reference signals (CSI-RSs), which are demodulated to obtain the channel-state information.
  • CSI-RSs channel state information reference signals
  • a CSI-RS can be transmitted with different periods in a time domain, typically ranging from 5 mili-seconds (ms) to 80 ms. With a 5 ms period, the overhead for each CSI-RS is about 0.12 percent. Longer periods, such as 80 ms, have corresponding less overhead.
  • the CSI-RS is transmitted in every resource block in subframes in which CSI-RS is transmitted. This indicates that the CSI-RS transmission occupies the entire cell bandwidth or frequency range. Using the entire frequency bandwidth is referred to as wideband CSI-RS.
  • Partitions describe resource allocations in terms of time resources and frequency resources.
  • multiple partitions can be multiplexed within the same bandwidth using frequency division multiplexing (FDM), also referred to as using a FDM manner.
  • FDM frequency division multiplexing
  • using the FDM manner with wide-band CSI-RS could or would introduce interference to partitions, especially when partitions utilize different subcarrier spacing.
  • Various techniques and/or embodiments are provided that facilitate cell formation and/or CSI-RS utilization.
  • a node informs information for resource allocation for each partition to user equipment (UE) device as cell specific or UE specific.
  • UE user equipment
  • the CSI-RS bandwidth configuration can be determined using the partition resource allocation information.
  • applications/partitions can be configured by 5G master information block (MIB), 5G system information block (SIB) and/or high layer signaling. Then, a bandwidth of CSI- RS transmissions can be associated with an assigned bandwidth for a corresponding application/partition.
  • MIB 5G master information block
  • SIB 5G system information block
  • high layer signaling a bandwidth of CSI- RS transmissions can be associated with an assigned bandwidth for a corresponding application/partition.
  • FIG. 1 illustrates an architecture of a system 100 of a network in accordance with some embodiments.
  • 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.
  • PDAs Personal Data Assistants
  • pagers pagers
  • laptop computers desktop computers
  • wireless handsets wireless handsets
  • 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.
  • 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.
  • M2M or MTC exchange of data can be a machine-initiated exchange of data.
  • 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.
  • 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.
  • UMTS Evolved Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Mobile Telecommunications System
  • NG RAN NextGen 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.
  • GSM Global System for Mobile Communications
  • CDMA code-division multiple access
  • PTT Push-to-Talk
  • POC PTT over Cellular
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • 5G fifth generation
  • NR New Radio
  • the UEs 101 and 1 02 can further directly exchange communication data via a ProSe interface 105.
  • the ProSe interface 105 can be any suitable ProSe interface 105.
  • 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).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • 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.
  • WiFi® wireless fidelity
  • 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).
  • 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).
  • BSs base stations
  • eNBs evolved NodeBs
  • gNB next Generation NodeBs
  • 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).
  • a network device as referred to herein can include any one of these APs, ANs, UEs or any other network component.
  • the RAN 1 10 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.
  • RAN nodes for providing macrocells e.g., macro RAN node 1 1 1
  • femtocells or picocells e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells
  • LP low power
  • 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.
  • 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 (UL) and downlink (DL) dynamic radio resource
  • RNC radio network controller
  • 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.
  • OFDM signals can comprise a plurality of orthogonal subcarriers.
  • 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.
  • 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.
  • the physical downlink shared channel 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.
  • downlink scheduling assigning control and shared channel resource blocks to the UE 102 within a cell
  • 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.
  • the PDCCH can use control channel elements (CCEs) to convey the control information.
  • CCEs control channel 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).
  • RAGs resource element groups
  • QPSK Quadrature Phase Shift Keying
  • the PDCCH can be transmitted using one or more CCEs, depending on the size of the downlink control information (DCI) and the channel condition.
  • DCI downlink control information
  • 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).
  • Some embodiments can use concepts for resource allocation for control channel information that are an extension of the above-described concepts.
  • 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.
  • EPCCH enhanced physical downlink control channel
  • ECCEs enhanced the control channel elements
  • each ECCE can correspond to nine sets of four physical resource elements known as an enhanced resource element groups (EREGs).
  • EREGs enhanced resource element groups
  • An ECCE can have other numbers of EREGs in some situations.
  • 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.
  • the CN 120 can be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN.
  • EPC evolved packet core
  • NPC NextGen Packet Core
  • the S1 interface 1 13 is 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 .
  • MME mobility management entity
  • 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.
  • the HSS 124 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, etc.
  • 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.
  • 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.
  • the P-GW 123 can terminate an SGi interface toward a PDN.
  • the P-GW 123 can route data packets between the CN network 120 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.
  • 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.).
  • PS UMTS Packet Services
  • LTE PS data services etc.
  • 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.
  • VoIP Voice-over-Internet Protocol
  • PTT sessions PTT sessions
  • group communication sessions social networking services, etc.
  • 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.
  • PCRF Policy and Charging Enforcement Function
  • HPLMN Home Public Land Mobile Network
  • IP-CAN Internet Protocol Connectivity Access Network
  • HPLMN Home Public Land Mobile Network
  • V-PCRF Visited PCRF
  • VPLMN Visited Public Land Mobile Network
  • 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.
  • PCEF Policy and Charging Enforcement Function
  • TFT traffic flow template
  • QCI QoS class of identifier
  • IMS services can be identified more accurately in a paging indication, which can enable the UEs 101 , 102 to differentiate between PS paging and IMS service related paging.
  • the UEs 101 , 102 can apply preferential prioritization for IMS services as desired based on any number of requests by any application, background searching (e.g., PLMN searching or the like), process, or communication.
  • the UEs 1 01 , 102 can differentiate the PS domain paging to more distinguishable categories, so that IMS services can be identified clearly in the UEs 101 , 102 in comparison to PS services.
  • a network e.g., CN 120, RAN 1 10, AP 106, or combination thereof as an eNB or the other network device
  • a network can provide further, more specific information with the TS 36.331 -Paging message, such as a "paging cause" parameter.
  • the UE can use this information to decide whether to respond to the paging, possibly interrupting some other procedure like an ongoing PLMN search.
  • UEs 101 , 102 can be registered to a visited PLMN (VPLMN) and performing PLMN search (i.e., background scan for a home PLMN (HPLMN) or a higher priority PLMN), or when a registered UE is performing a manual PLMN search, the PLMN search can be interrupted in order to move to a connected mode and respond to a paging operation as part of a MT procedure / operation.
  • PLMN search i.e., background scan for a home PLMN (HPLMN) or a higher priority PLMN
  • this paging could be for PS data (non-IMS data), where, for example, an application server 130 in the NW wants to push to the UE 101 or 102 for one of the many different applications running in / on the UE 101 or 1 02, for example.
  • PS data non-IMS data
  • the PS data could be delay tolerant and less important, in legacy networks the paging is often not able to be ignored completely, as critical services like an IMS call can be the reason for the PS paging.
  • the multiple interruptions of the PLMN search caused by the paging can result in an unpredictable delay of the PLMN search or in the worst case even in a failure of the procedure, resulting in a loss of efficiency in network
  • a delay in moving to or handover to a preferred PLMN (via manual PLMN search or HPLMN search) in a roaming condition can incur more roaming charges on a user as well.
  • FIG. 2 illustrates example components of a network device 200 in accordance with 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 210, 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 UE 101 , 102 or a RAN node 1 1 1 , 1 12, AP, AN, eNB or other network component.
  • the device 200 can include less elements (e.g., a RAN node can not utilize application circuitry 202, and instead include a processor/controller to process IP data received from an EPC).
  • the network device 200 can include additional elements such as, for example, memory/storage, display, camera, sensor, or input/output (I/O) interface.
  • 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).
  • the application circuitry 202 can include one or more application processors.
  • 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.
  • processors of application circuitry 202 can process IP data packets received from an EPC.
  • 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.
  • 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), si2h generation (6G), etc.).
  • the baseband circuitry 204 e.g., one or more of baseband processors 204A-D
  • 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.
  • modulation/demodulation circuitry of the baseband circuitry 204 can include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • 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.
  • LDPC Low Density Parity Check
  • 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.
  • 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).
  • SOC system on a chip
  • the baseband circuitry 204 can provide for
  • 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).
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • multi-mode baseband circuitry Embodiments in which the baseband circuitry 204 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 206 can enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • 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.
  • the receive signal path of the RF circuitry 206 can include mixer circuitry 206a, amplifier circuitry 206b and filter circuitry 206c.
  • 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.
  • 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.
  • the output baseband signals can be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 206a of the receive signal path can comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • 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.
  • 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.
  • 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).
  • the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a can be arranged for direct downconversion and direct upconversion, respectively.
  • 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.
  • 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.
  • the output baseband signals and the input baseband signals can be digital baseband signals.
  • 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.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • a separate radio IC circuitry can be provided for processing signals for each spectrum, although the scope of the
  • 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.
  • synthesizer circuitry 206d can be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • 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.
  • the synthesizer circuitry 206d can be a fractional N/N+1 synthesizer.
  • frequency input can be provided by a voltage controlled oscillator (VCO), although that is not a requirement.
  • VCO voltage controlled oscillator
  • Divider control input can be provided by either the baseband circuitry 204 or the applications processor 202 depending on the desired output frequency.
  • a divider control input e.g., N
  • N can be determined from a look-up table based on a channel indicated by the applications processor 202.
  • Synthesizer circuitry 206d of the RF circuitry 206 can include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator.
  • the divider can be a dual modulus divider (DMD) and the phase accumulator can be a digital phase accumulator (DPA).
  • 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.
  • the DLL can include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip- flop.
  • 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.
  • Nd is the number of delay elements in the delay line.
  • 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.
  • the output frequency can be a LO frequency (fLO).
  • the RF circuitry 206 can include an IQ/polar converter.
  • 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.
  • 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.
  • 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).
  • PA power amplifier
  • the PMC 212 can manage power provided to the baseband circuitry 204.
  • the PMC 212 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
  • FIG. 2 shows the PMC 212 coupled only with the baseband circuitry 204.
  • 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.
  • 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.
  • DRX Discontinuous Reception Mode
  • 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 does not receive data in this state, in order to receive data, it transitions back to RRC_Connected state.
  • 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 can be unreachable to the network and can power down completely. Any data sent during this time can incur a large delay with the delay presumed to be acceptable.
  • 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.
  • 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).
  • Layer 3 can comprise a radio resource control (RRC) layer, described in further detail below.
  • RRC radio resource control
  • 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.
  • Layer 1 can comprise a physical (PHY) layer of a UE/RAN node.
  • PHY physical
  • the memory 204G 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.
  • 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.
  • any connection can also be termed a computer-readable medium.
  • coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • the UE e.g., 1 01 , 102, or device 200
  • the UE can get paging for a packet service without knowing any further information about the paging of the MT procedure, such as whether someone is calling on a line, a VoIP call, or just some packet utilized from Facebook, other application service, or other similar MT service.
  • a greater opportunity exists for further delays without the possibility for the UE to discriminate between the different application packets that could initiate a paging and also give a different priority to it based on one or more user preferences. This can could be important for the UE because the UE might be doing other tasks more vital for resource allocation.
  • a UE e.g., 101 , 102, or device 200
  • a background search for other PLMNs This is a task the UE device 200 could do in regular intervals if it is not connected on its own home PLMN or a higher priority PLMN, but roaming somewhere else.
  • a higher priority could be a home PLMN or some other PLMNs according to a list provided by the provider or subscriber (e.g., HSS 124).
  • the device 200 can be configured to connect or include multiple subscriber identity / identification module (SIM) cards / components, referred to as dual SIM or multi SIM devices.
  • SIM subscriber identity / identification module
  • the device 200 can operate with a single transmit and receive component that can coordinate between the different identities from which the SIM components are operating. As such, an incoming voice call should be responded to as fast as possible, while only an incoming packet for an application could be relatively ignored in order to utilize resources for the other identity (e.g., the voice call or SIM component) that is more important or has a higher priority from a priority list / data set / or set of user device preferences, for example.
  • This same scenario can also be utilized for other operations or incoming data, such as with a PLMN background search such as a manual PLMN search, which can last for a long period of time since, especially with a large number of different bands from 2G, etc.
  • a PLMN background search such as a manual PLMN search
  • the network devices can interpret this manual PLMN search to serve and ensure against a drop or loss of any increment voice call, with more frequent interruptions in particular.
  • a MT IMS voice call can be interpreted as "data" call as indicated in MT paging message and can be preceded by MT Circuit Switched (CS) paging of an other network or MO CS call initiated by user at same time.
  • CS Circuit Switched
  • 3GPP NW can provide further granular information about the kind of service the network is paging for.
  • the Paging cause parameter could indicate one of the following values / classes / categories: 1 ) IMS voice/video service; 2) IMS SMS service; 3) IMS other services (not voice/video/SMS-related; 4) any IMS service; 5) Other PS service (not IMS-related).
  • a network device e.g., an eNB or access point
  • IMS and non-IMS services could use 4 and 5
  • a network that is able to discriminate between different types of IMS services could use 3) instead of 4) to explicitly indicate to the UE that the paging is for an IMS service different from voice/video and SMS.
  • UE may decide to suspend PLMN search only for critical services like incoming voice/video services.
  • the UE 101 , 102, or device 200 can memorize that there was a paging to which it did not respond, and access the network later, when the PLMN search has been completed and the UE decides to stay on the current PLMN. For example, if the reason for the paging was a mobile terminating IMS SMS, the MME can then inform the HSS (e.g., 124) that the UE is reachable again, and the HSS 124 can initiate a signaling procedure which will result in a delivery of the SMS to the UE once resources are more available or less urgent for another operation / application / or category, for example. To this purpose the UE 101 , 102, or 200 could initiate a periodic tau area update (TAU) procedure if the service category in the Paging message indicated "IMS SMS service", for example.
  • TAU periodic tau area update
  • FIG. 3 illustrates example interfaces of baseband circuitry in accordance with some embodiments.
  • 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.
  • 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 e2ernal 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.
  • a memory interface 312 e.g., an interface to send/receive data to/from memory e2ernal 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
  • 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
  • a power management interface 320 e.g., an interface to send/receive power or control signals to / from the PMC 21 2.
  • FIG. 4 is a diagram illustrating example partitions for a framework 400 for mobile communications.
  • the framework 400 is provided for illustrative purposes and to facilitate understanding. It is appreciated that suitable variations are contemplated.
  • the framework 400 can be utilized by the system 100 and variations thereof.
  • the framework 400 shows time along an x-axis and frequency along a y- axis.
  • the framework 400 can be utilized for 5G flexible RAT.
  • Multiple partitions or applications in different and/or same frequency ranges/bands can be multiplexed using either time-division multiplexing (TDM), frequency division multiplexing (FDM), code- division multiplexing (CDM) and/or a combination of the above.
  • TDM time-division multiplexing
  • FDM frequency division multiplexing
  • CDM code- division multiplexing
  • different partitions can employ different numerologies or subcarrier spacings, which can be tailored for different applications and use cases.
  • the framework 400 depicts time and frequency based resources and resource blocks, such as shown by 401 .
  • the framework 400 in this example, includes three partitions with varied subcarrier spacing and varied transmission time intervals (TTIs).
  • the framework 400 includes a short partition 402, a long partition 403 and a normal/medium partition 404.
  • the short partition 402 has a relatively short TTI.
  • the short partition 402 can be utilized for mission critical applications and the like.
  • the long partition 403 has a relatively long TTI, such as an entire subframe.
  • the long partition 403 can be used for high rate or massive machine-type communication (MTC).
  • MTC massive machine-type communication
  • the normal/medium partition 404 has a medium length TTI and can be used, for example, for mobile broadband.
  • the channel state information reference signal occupies the whole system bandwidth.
  • CSI-RS channel state information reference signal
  • FDM frequency division multiplexing
  • network device(s), such as shown in the system 100 can configure CSI-RS transmissions to occupy partial system bandwidth so as to
  • cross-partition interference avoid/mitigate cross-partition interference.
  • Various mechanisms can be utilized to mitigate the cross-partition interference including, but not limited to CSI-RS bandwidth configuration information, CSI-RS sequence generation and resource mapping, and the like.
  • Network devices or nodes typically generate the CSI-RS configuration for CSI-RS transmissions.
  • the CSI-RS configuration is also referred to as a CSI-RS bandwidth or resource configuration.
  • an eNB provides or transmits the CSI-RS configuration for each partition to one or more UEs in a cell specific or UE specific manner. The one or more UEs can then determine the CSI-RS configurations and associated bandwidth configurations.
  • the CSI-RS configuration and bandwidth configurations can be configured by, for example, a 5G master information block (MIB), a 5G system information block (SIB), high layer signaling, and the like.
  • MIB 5G master information block
  • SIB 5G system information block
  • FIG. 5 is a diagram illustrating CSI-RS configurations 500 that utilize an entire partition bandwidth in accordance with an embodiment.
  • the configurations 500 are provided for illustrative purposes and to facilitate understanding. It is appreciated that suitable variations are contemplated.
  • the configurations 500 can be utilized by the system 1 00 and variations thereof.
  • the diagram depicts time along an x-axis and frequency along a y-axis.
  • the configuration 500 includes primary partitions 501 and 503 and a secondary partition 502. It can be seen that the CSI-RS for each partition spans the bandwidth allocated for the partition.
  • the primary partitions 501 and 503 use 15 kHz subcarrier spacing and have a subframe duration of 1 ms.
  • the secondary partition 502 uses 60 kHz subcarrier spacing and the subframe duration is around 0.25 ms. Additionally, two non-contiguous sub-bands are allocated for the primary partitions 501 , 503 and one sub-band is allocated for the secondary partition 502.
  • the periodicity of CSI-RS transmission can be configured independently for different partitions within one component carrier (CC).
  • a common periodicity in terms of TTI may be configured for all partitions of a CC.
  • a CSI-RS can be transmitted within a subset of a partition (e.g., primary partition or partition with a largest carrier spacing, or a partition with a smallest carrier spacing), which is typically used for CSI measurement of all partitions to derive the CSI measurement and perform cell formation.
  • a node can use to inform one or more UEs of the CSI-RS configuration(s), which includes the CSI-RS bandwidth configuration.
  • the CSI-RS configuration can be indicated in the 5G master information block (MIB). After successfully decoding the MIB, the UE obtains CSI-RS configuration.
  • the CSI-RS configuration can include the CSI-RS resource configuration for each partition.
  • the CSI-RS configuration is indicated in the 5G system information block (SIB).
  • SIB 5G system information block
  • the update on the CSI-RS configuration occurs within a broadcast control channel (BCCH) modification period, which is provided by higher layers.
  • BCCH broadcast control channel
  • One or more UEs are informed about the change by a paging message that includes a System I nfoModification flag on the SIB change. This example may be suitable for a scenario when the CSI-RS configuration is updated semi-statically.
  • the CSI-RS configuration may include the CSI-RS configuration for each partition.
  • CSI-RS bandwidth configuration is indicated in a dedicated control channel in the downlink. It is noted that that limited information can be carried in the dedicated control channel, thus the size of configuration information may be small. In this case, it may be beneficial to carry the configuration information of CSI-RS bandwidth configuration for only one partition where the CSI-RS is to be transmitted.
  • PCFICH Physical TDD configuration indicator channel
  • one or more CSI-RS configurations are configured by higher layers via radio resource control (RRC) signaling.
  • RRC radio resource control
  • An active CSI-RS configuration can be indicated to the UE using MAC signaling.
  • one CSI-RS configuration can be selected from a set of CSI resource configurations and activated using downlink control information (DCI) transmitted on PDCCH.
  • DCI downlink control information
  • a CSI-RS configuration is indicated in a PDCCH in a cell specific manner. The PDCCH using a common search space can be used to signal the CSI-RS configuration.
  • a new radio network temporary identifier referred to as CSI-RNTI, can be defined for the transmission of the PDCCH.
  • the CRC for the PDCCH is scrambled by the CIS-RNTI.
  • This CSI-RNTI can be pre-defined and/or configured by higher layers, including MIB, SIB, and/or RRC signaling.
  • PDCCH with a common search in one partition may be used to indicate the CSI-RS configuration for one or more partitions, including other partitions.
  • a PDCCH with common search space in a primary partition can be used to indicate the CSI-RS resource configuration for both primary and secondary partitions.
  • the periodicity of the PDCCH which contains the resource configuration information of CSI-RS can be configured. This may also help to reduce the UE power consumption due to the fact that the UE only monitors a certain subframe for PDCCH with CRC scrambled by CSI-RNTI.
  • the subframes that a UE monitors for PDCCH with CRC scrambled by CSI-RNTI are defined as the downlink subframes or special subframes in TDD system satisfying:
  • n T and n s are radio frame number and slot number; N 0FFSET CS1 and CSIpERioDiciTY are tne subframe offset and periodicity of the PDCCH transmission with CRC scrambled by CSI-RNTI, respectively.
  • FIG. 6 depicts example configurations 600 for periodicity and subframe offset that can be used to limit the monitoring by a UE.
  • the configurations 600 are provided for illustrative purposes and it is appreciated that suitable variations are contemplated.
  • the configurations 600 can be used by systems, such as the system 100 described above.
  • a slot according to 5G is equivalent to a subframe in LTE. It is appreciated that the slot and subframe can be varied for other communication types. Thus, the below configurations discuss subframe, however the term slot can be used in place of subframe for 5G.
  • the configurations include a configuration index I CSI , a periodicity
  • CSIpERioDiciTY can be extended from the examples shown in FIG. 6. Additionally, the configuration index can be predefined or configured by higher layers via MIB, SIB or dedicated RRC signaling.
  • a higher/longer periodicity can reduce overhead but delay obtaining CSI-RSs, delay obtaining channel estimates and delay cell formation.
  • a shorter periodicity can increase overhead, but improve obtaining channel estimates, CSI-RSs, and improve cell formation.
  • the periodicity e.g., CSI-Periodicity for the PDCCH with CRC scrambled by CSI-RNTI can be predefined or configured by higher layers via MIB, SIB or dedicated RRC signalling.
  • a UE monitors a set of subframes for the PDCCH with CRC scrambled by CSI-RNTI.
  • a subframe bit map with parameter "subframeBitMap” can be used to signal the subframes that the UE needs to monitor for the PDCCH with CRC scrambled by CSI-RNTI, which can be repeated within the configured periodicity.
  • subframeBitMap "001 1 00001 1 " and the configured periodicity in subframes is 20.
  • the first and second radio frames have the same subframe bit map, and subframes #2, #3, #8 and #9 in each frame are allocated for the transmission of PDCCH with CRC scrambled by CSI-RNTI.
  • subframeBitMap can be predefined or configured by higher layers via MIB, SIB or dedicated RRC signaling.
  • the CSI-RS configuration can be indicated in the PDCCH with a UE specific search space.
  • a set of CSI- RS resources including time and frequency domain configuration can be configured by higher layers signaling, e.g. via RRC signaling.
  • one field in the DCI can be used to indicate one CSI-RS resource configuration from the set of CSI-RS resources configured by higher layers.
  • same partition scheduling or cross-partition scheduling can be used to trigger CSI-RS transmission(s).
  • the scheduling can be dependent upon UE capabilities, such as whether a UE can support one or more subcarrier spacings within the same bandwidth.
  • FIG. 7 is a diagram illustrating CSI-RS configurations 700 that utilize cross partition scheduling in accordance with an embodiment.
  • the configurations 700 are provided for illustrative purposes and to facilitate understanding. It is appreciated that suitable variations are contemplated.
  • the configurations 700 can be utilized by the system 1 00 and variations thereof.
  • the diagram depicts time along an x-axis and frequency along a y-axis.
  • the configuration 700 includes a primary partition 701 and a secondary partition 702.
  • the primary partition 701 includes a CSI-RS as shown.
  • the secondary partition 702 also includes a CSI-RS as shown.
  • the scheduling/configuration for both of the CSI-RSs is provided in a downlink control channel within one of the partitions.
  • the control channel is a PDCCH and is located in a first resource block of the primary partition 701 .
  • the scheduling/configuration can include a partition identifier, such as a partition indicator field (PIF), which indicates, for example, the primary partition or the secondary partition.
  • PIF partition indicator field
  • the PIF can be included in a DCI.
  • a dedicated control channel can be used to signal partial information of CSI-RS bandwidth configuration, while the PDCCH is used to signal remaining information.
  • a UE first detects whether the dedicated control channel is updated. If the information is changed, the UE may subsequently decode the corresponding PDCCH for the detailed CSI-RS bandwidth configuration.
  • a resource sub-band can be defined to indicate a CSI-RS bandwidth configuration to reduce the signaling overhead.
  • the resource sub- band can be defined to indicate the CSI-RS configuration, where each resource sub- band consists of K PRBs in terms of baseline subcarrier spacing, or the subcarrier spacing used for the primary partition.
  • the size of resource sub-band can be different depending on the system bandwidth. Additionally, the sub-band size is defined as an integer of M PRBs to accommodate different subcarrier spacings in the same system bandwidth. M is the scaling factor between the baseline subcarrier spacing and subcarrier spacings for other partitions, i.e.,
  • M A ' secondar y
  • a fiPrimary and A f secondary are the subcarrier spacing used for the primary and secondary partitions, respectively.
  • a bitmap can be used to indicate the CSI-RS configuration.
  • the system bandwidth is defined or configured bandwidth as BW. Then the number of resource sub-band for CSI-RS transmission can be calculated as
  • N SB ⁇ BW/K
  • bit "1" indicates that the resource sub-band is allocated for CSI-RS transmission while bit “0" indicates that the resource sub-band is not allocated for CSI-RS transmission.
  • N SB 4 i.e, total number of resource sub-band for CSI-RS transmission is 4
  • a bitmap "1 101 " indicates that resource sub-bands #0, #1 and #3 are allocated for CSI-RS transmission while resource sub-band #2 is not allocated for CSI-RS transmission.
  • a resource sub-band index can be used to indicate the CSI-RS configuration.
  • N SB 4 i.e, total number of resource sub-band is 4
  • bit "01" indicates the resource sub-band #1 is allocated for CSI-RS transmission.
  • the bitmap or resource sub-band index can be separately defined for CSI-RS transmission in each partition.
  • the CSI-RS resource/bandwidth can be separately defined for CSI-RS transmission in each partition.
  • CSI-RS transmission in each partition can be grouped together.
  • the starting subband position and the number of the allocated subbands N SB subbands can be indicated to the UE.
  • the indicated position and subband can identify or be the CSI-RS configuration.
  • the CSI-RS bandwidth configuration can be indicated by a combined resource indicator.
  • a combined resource indicator For example, if two non-discontinuous CSI-RS subbands are configured, where one starts from s 0 to s t - 1, and the other starts from s 2 to s 3 , the explicit indicate index can be given by equation:
  • a reserved subband for other application can be configured. For example, if the secondary partition only covers one out of N SB
  • an eNodeB or other node will inform UE using the primary bandwitdh which subband is reserved.
  • the reserved subband can be configured in either via a bitmap or a subband index.
  • a reserved sub-band index can be signaled and/or provided by upper layer signaling.
  • a CSI-RS sequence can be generated as a function of physical cell ID, virtual cell ID and/or symbol/slot/subframe index to locate or identify CSI-RS bandwidth configuration(s).
  • the CSI-RS sequence can be generated as a function of a partition index.
  • a pseudo-random sequence generator for CSI-RS generation can be defined as a function of physical cell ID or virtual cell ID, symbol and slot index and partition index.
  • an independent CSI-RS sequence may be generated. Further, the CSI-RS is transmitted according to the CSI- RS configuration. In particular, CSI-RS is transmitted in the PRB included in the CSI- RS resource configuration, and is punctured in the PRB which is not included in the CSI-RS resource configuration.
  • N PRBiPrimary The total number of PRBs in a system bandwidth using the baseline subcarrier spacing or subcarrier spacing A f primary used for primary partition is shown as N PRBiPrimary . Then, for a secondary partition with A fiSecondary , the total number of PRBs can be
  • the CSI-RS sequence length can be an integer number of total number of PRBs in the whole system bandwidth. Assuming L subcarriers are allocated for CSI-RS transmission within each PRB, the CSI-RS sequence length can be L ⁇ N PRB .
  • FIG. 8 is a diagram illustrating an example of CSI-RS resource
  • mapping/configuration 800 for primary and secondary partitions within a system bandwidth The primary partition and the secondary partition are have varied subcarrier spacing.
  • the system bandwidth is 40 MHz and each of the primary and secondary partitions occupies 20 MHz.
  • a subcarrier spacing of 15 kHz is used for the primary partition and a subcarrier spacing of 60 kHz is used for the secondary partition.
  • the number of physical resource blocks (PRBs) within the primary partition is 200 and the number of PRBs within the secondary partition is 50.
  • M 4 in this example.
  • FIG. 9 is a diagram illustrating example CSI-RSs 900 for primary and secondary partitions.
  • the primary partition and the secondary partition have varied subcarrier spacing.
  • frequency is depicted along an x-axis.
  • a subcarrier spacing of 15 kHz is used for the primary partition and a subcarrier spacing of 60 kHz is used for the secondary partition.
  • the primary partition includes 200 PRBs and the secondary partition includes 50 PRBs.
  • the CSI-RS for the primary partition and the CSI-RS for the secondary partition are transmitted according to the CSI-RS configuration(s).
  • CSI-RS is transmitted in the PRB included in the CSI-RS resource configuration, and is punctured in the PRB which is not included in the CSI-RS bandwidth/resource configuration.
  • the CSI-RS for the primary partition is punctured in PRBs #0-99 and is transmitted in PRBs #100-199.
  • the CSI-RS for the secondary partition is transmitted on PRBs #0-24 and is punctured in PRBs #25-49.
  • FIG. 10 is a flow diagram illustrating a method 1000 of configuring CSI-RS transmissions in accordance with an embodiment.
  • the method or process 1000 is described with reference to a UE device and a node, however it is appreciated that other device and/or nodes can be used.
  • the node can be other types of nodes, such as an eNB, gNB and the like.
  • the method 1 000 can be implemented using the above systems, arrangements and variations thereof.
  • the method 1000 can mitigate cross partition interference and enhance use of system resources by generating or providing CSI-RS configuration(s).
  • a node determines or obtains primary partition characteristics for a primary partition of a system bandwidth at block 1 002.
  • the partition characteristics include subcarrier spacing, bandwidth, frequency and the like.
  • the node determines or obtains secondary partition characteristics for a secondary partition of the system bandwidth at block 1004.
  • the secondary partition characteristics include subcarrier spacing, bandwidth, frequency and the like.
  • the node generates a first bandwidth configuration for a first CSI-RS based on the primary partition characteristics at block 1006.
  • the first CSI-RS is associated with the primary partition.
  • the node generates a second bandwidth configuration for a second CSI-RS based on the secondary partition characteristics at block 1008.
  • the second CSI-RS is associated with the secondary partition.
  • the node transmits the first bandwidth configuration and the second bandwidth configuration to a UE device at block 101 0.
  • the node then transmits the first CSI-RS and the second CSI-RS according to the first and second bandwidth configurations at block 1012.
  • the UE then receives the first CSI-RS and the second CSI-RS.
  • the node can then form and/or facilitate forming of a cell based on the first
  • the method 1000 can be repeated or re-utilized for additional channel estimation. It is appreciated that suitable variations of the method 1000 are
  • circuitry may 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.
  • ASIC Application Specific Integrated Circuit
  • the circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules.
  • circuitry may include logic, at least partially operable in hardware.
  • 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;
  • 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 may also be implemented as a combination of computing processing units.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Example 1 is an apparatus configured to be employed within a base station.
  • the apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors.
  • the one or more processors are configured to generate first channel state information-reference signal (CSI-RS) bandwidth information for a first partition of a system bandwidth, generate second CSI-RS bandwidth information for a second partition of a system bandwidth, and send the first CSI-RS bandwidth information and the second CSI-RS bandwidth information to the RF interface for transmission to one or more user equipment (UE) devices, wherein the first CSI-RS bandwidth information and the second CSI-RS bandwidth information are provided within a physical channel and/or higher layer signaling.
  • CSI-RS channel state information-reference signal
  • Example 2 includes the subject matter of Example 1 , including or omitting optional elements, wherein the physical channel is a physical downlink control channel (PDCCH).
  • the physical channel is a physical downlink control channel (PDCCH).
  • Example 3 includes the subject matter of any of Examples 1 -2, including or omitting optional elements, where the first CSI-RS bandwidth configuration is indicated in a master information block (MIB).
  • MIB master information block
  • Example 4 includes the subject matter of any of Examples 1 -3, including or omitting optional elements, where the first CSI-RS bandwidth configuration is indicated in a system information block (SIB).
  • SIB system information block
  • Example 5 includes the subject matter of any of Examples 1 -4, including or omitting optional elements, where the first partition includes time resources, frequency resources, and/or a numerology.
  • Example 6 includes the subject matter of any of Examples 1 -5, including or omitting optional elements, where the first partition has a subcarrier spacing different from a subcarrier spacing of the second partition.
  • Example 7 includes the subject matter of any of Examples 1 -6, including or omitting optional elements, where the first CSI-RS bandwidth configuration and the second CSI-RS bandwidth configuration are provided via physical downlink control channel (PDCCH).
  • Example 8 includes the subject matter of any of Examples 1 -7, including or omitting optional elements, where the first CSI-RS bandwidth configuration and the second CSI-RS bandwidth configuration are provided via higher layer signaling.
  • Example 9 includes the subject matter of any of Examples 1 -8, including or omitting optional elements, where the second CSI-RS bandwidth configuration identifies an entire bandwidth of the second partition.
  • Example 10 includes the subject matter of any of Examples 1 -9, including or omitting optional elements, where the second CSI-RS bandwidth configuration identifies a portion of an entire bandwidth for the second partition.
  • Example 1 1 includes the subject matter of any of Examples 1 -1 0, including or omitting optional elements, where the one or more processors are further configured to generate a first CSI-RS using the first CSI-RS bandwidth configuration and to generate a second CSI-RS using the second CSI-RS bandwidth configuration.
  • Example 12 includes the subject matter of any of Examples 1 -1 1 , including or omitting optional elements, where the one or more processors are further configured to send the first CSI-RS and the second CSI-RS to the RF interface for transmission to the one or more UE devices.
  • Example 13 is an apparatus for a user equipment (UE) device having baseband circuitry.
  • the baseband circuitry includes a radio frequency (RF) interface and one or more processors.
  • the one or more processors are configured to obtain a first channel state information-reference signal (CSI-RS) bandwidth configuration from the RF interface, wherein the first CSI-RS bandwidth configuration is associated with a first partition of a system bandwidth, wherein the first partition has a first subcarrier spacing; obtain a second CSI-RS bandwidth configuration from the RF interface, wherein second first channel state information-reference signal (CSI-RS) bandwidth configuration is associated with a second partition of a system bandwidth, wherein the second partition has a second subcarrier spacing varied from the first subcarrier spacing; and monitor one or more downlink transmissions from the RF interface for a first CSI-RS and a second CSI-RS based on the first CSI-RS bandwidth configuration and the second CSI-RS bandwidth configuration.
  • CSI-RS channel state information-reference signal
  • Example 14 includes the subject matter of Examples 13, including or omitting optional elements, where the one or more processors are configured to monitor a physical downlink control channel (PDCCH) from an evolved Node B (eNB).
  • PDCCH physical downlink control channel
  • eNB evolved Node B
  • Example 15 includes the subject matter of any of Examples 13-14, including or omitting optional elements, where the one or more processors are configured to limit the monitoring of the one or more downlink transmissions according to a periodicity and a subframe or slot offset.
  • Example 16 includes the subject matter of any of Examples 13-15, including or omitting optional elements, where the one or more downlink transmissions includes a code scrambled by a channel state information-radio network temporary identifier (CSI- RNTI) to identify the first CSI-RS bandwidth configuration.
  • CSI- RNTI channel state information-radio network temporary identifier
  • Example 17 includes the subject matter of any of Examples 13-16, including or omitting optional elements, where the one or more processors are configured to monitor the one or more downlink transmissions based on a bitmap, wherein the bitmap identifies which slots or subframes of a packet include the first CSI-RS.
  • Example 18 includes the subject matter of any of Examples 13-17, including or omitting optional elements, where the one or more processors are configured to generate channel quality information (CQI) based on the first CSI-RS and send the CQI to the RF interface for transmission to an evolved Node B.
  • CQI channel quality information
  • Example 19 includes one or more computer-readable media having instructions that, when executed, cause a base station or evolved Node B (eNB) to determine primary partition characteristics for a first partition and secondary partition characteristics for a second partition, generate a first channel state information- reference signal (CSI-RS) bandwidth configuration based on the primary partition characteristics, and generate a second CSI-RS bandwidth configuration based on the secondary partition characteristics.
  • eNB evolved Node B
  • CSI-RS channel state information- reference signal
  • Example 20 includes the subject matter of Example 19, including or omitting optional elements, where the primary partition characteristics include a primary subcarrier spacing, the secondary partition characteristics include a secondary subcarrier spacing and the primary subcarrier spacing is varied from the secondary subcarrier spacing.
  • Example 21 includes the subject matter of any of Examples 19-20, including or omitting optional elements, where the instructions, when executed further cause the base station to transmit the first CSI-RS bandwidth configuration and the second CSI- RS bandwidth configuration.
  • Example 22 is an apparatus for a base station.
  • the apparatus includes a means to generate a first channel state information-reference signal (CSI-RS) bandwidth configuration for a first partition, a means to generate a second CSI-RS bandwidth configuration for a second partition, a means to transmit the first CSI-RS bandwidth configuration and second CSI-RS bandwidth configuration, a means to transmit a first CSI-RS and a second CSI-RS, and a means to receive channel quality information (CQI) based on the first CSI-RS and the second CSI-RS.
  • CSI-RS channel state information-reference signal
  • 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.
  • 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.
  • any connection is properly termed a computer-readable medium.
  • a computer-readable medium 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.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • 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.
  • modules e.g., procedures, functions, and so on
  • 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.
  • at least one processor can include one or more modules operable to perform functions described herein.
  • 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.
  • W-CDMA Wideband-CDMA
  • CDMA1800 covers IS-1800, IS-95 and IS-856 standards.
  • a TDMA system can implement a radio technology such as Global System for Mobile
  • GSM Global System for Mobile Communications
  • 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, Flash-OFDML , etc.
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • Wi-Fi Wi-Fi
  • WiMAX WiMAX
  • IEEE 802.18, Flash-OFDML 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).
  • CDMA1 800 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2).
  • 3GPP2 3rd Generation Partnership Project 2
  • 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.
  • SC-FDMA Single carrier frequency division multiple access
  • 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.
  • PAPR peak-to-average power ratio
  • SC-FDMA can be utilized in uplink communications where lower PAPR can benefit a mobile terminal in terms of transmit power efficiency.
  • various aspects or features described herein can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques.
  • article of manufacture as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media.
  • 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.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • storage medium can be integral to processor.
  • processor and storage medium can reside in an ASIC.
  • ASIC can reside in a user terminal.
  • processor and storage medium can reside as discrete components in a user terminal.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un appareil utilisé dans un nœud B évolué (eNB). L'appareil comprend un circuit de bande de base composé d'une interface radiofréquence (RF) et d'un ou de plusieurs processeurs. Le ou les processeurs sont configurés pour générer des premières informations de bande passante d'un signal de référence d'informations d'état de canal (CSI-RS) pour une première partition de bande passante d'un système, pour générer des secondes informations de bande passante de CSI-RS pour une seconde partition de bande passante d'un système, et pour envoyer les premières informations de bande passante CSI-RS et les secondes informations de bande passante CSI-RS à l'interface RF afin de les transmettre à un ou plusieurs équipements utilisateurs (UE), les premières informations de bande passante CSI-RS et les secondes informations de bande passante CSI-RS étant fournies dans un canal physique et/ou une signalisation de couche supérieure.
PCT/US2017/039676 2016-08-08 2017-06-28 Configuration d'informations d'état de canal pour systèmes de communication mobiles WO2018031132A1 (fr)

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