WO2017131806A1 - Signaux de référence et canal de diffusion physique pour des systèmes 5g - Google Patents

Signaux de référence et canal de diffusion physique pour des systèmes 5g Download PDF

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Publication number
WO2017131806A1
WO2017131806A1 PCT/US2016/035276 US2016035276W WO2017131806A1 WO 2017131806 A1 WO2017131806 A1 WO 2017131806A1 US 2016035276 W US2016035276 W US 2016035276W WO 2017131806 A1 WO2017131806 A1 WO 2017131806A1
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Prior art keywords
pbch
processing circuitry
brs
aps
frequency
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English (en)
Inventor
Gang Xiong
Yuan Zhu
Yushu Zhang
Jong-Kae Fwu
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Intel IP Corp
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Intel IP Corp
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Priority to CN201680076546.2A priority Critical patent/CN108513693A/zh
Publication of WO2017131806A1 publication Critical patent/WO2017131806A1/fr
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    • 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
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0684—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using different training sequences per antenna
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • Embodiments described herein relate generally to wireless networks and communications systems. Some embodiments relate to cellular communication networks including 3 GPP (Third Generation Partnership Project) networks, 3GPP LTE (Long Term Evolution) networks, and 3GPP LTE-A (LTE Advanced) networks, although the scope of the embodiments is not limited in this respect.
  • 3 GPP Transmissiond Generation Partnership Project
  • 3GPP LTE Long Term Evolution
  • 3GPP LTE-A LTE Advanced
  • next generation wireless communication system will provide access to information and sharing of data anywhere, anytime by various users and applications.
  • 5G is expected to be a unified network/system that target to meet vastly different and sometime conflicting performance dimensions and services.
  • 5G will evolve based on 3 GPP LTE- Advanced with additional potential new radio access technologies (RATs) to provide better, simpler, and more seamless wireless connectivity solutions.
  • RATs new radio access technologies
  • High frequency band communication has attracted significantly attention from the industry, since it can provide wider bandwidth to support the future integrated communication system. Beamforming is a critical technology for the implementation of high frequency band systems. Beamforming gain can compensate for the severe path loss caused by atmospheric attenuation, improve the S R, and enlarge the coverage area. By aligning the transmission beam to the target UE, the radiated energy is focused for higher energy efficiency, and the mutual UE interference is suppressed.
  • a primary concern of the present disclosure is the transmission of broadcast signals and beamformed reference signals.
  • FIG. 1 illustrates an example UE and e B according to some embodiments.
  • Fig. 2 illustrates an example of synchronization signal resource mapping according to some embodiments.
  • Fig. 3 illustrates resource mapping for the transmission of synchronization signals, BRSs and the PBCH within one OFDM symbol according to some embodiments.
  • Fig. 4 illustrates an example of a PBCH and BRS resource mapping scheme according to some embodiments.
  • Fig. 5 illustrates an example of a DM-RS pattern for PBCH demodulation according to some embodiments.
  • Fig. 6 illustrates an example of a DM-RS pattern for PBCH demodulation according to some embodiments.
  • Fig. 7 illustrates an example of a DM-RS pattern for PBCH demodulation according to some embodiments.
  • Fig. 8 illustrates an example of a transmit diversity transmission scheme for PBCH transmission according to some embodiments.
  • Fig. 9 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 10 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 11 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 12 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 13 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 14 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 15 illustrates an example of resource mapping of BRS and PBCH according to some embodiments.
  • Fig. 16 illustrates an example of frequency hopping for PBCH transmission according to some embodiments.
  • Fig. 17 illustrates an example of a user equipment device according to some embodiments.
  • FIG. 18 illustrates an example of a computing machine according to some embodiments. Detailed Description
  • a mobile terminal (referred to as a User Equipment or UE) connects to a cell served by a base station (referred to as an evolved Node B or eNB) via an air interface.
  • Fig. 1 illustrates an example of the components of a UE 400 and a base station or eNB 300.
  • the eNB 300 includes processing circuitry 301 connected to a radio transceiver 302 for providing an air interface.
  • the UE 400 includes processing circuitry 401 connected to a radio transceiver 402 for providing an interface.
  • Each of the transceivers in the devices is connected to antennas 55.
  • the physical layer of LTE is based upon orthogonal frequency division multiplexing (OFDM) for the downlink and a related technique, single carrier frequency division multiplexing (SC-FDM), for the uplink.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM single carrier frequency division multiplexing
  • OFDM/SC-FDM complex modulation symbols according to a modulation scheme such as QAM (quadrature amplitude modulation) are each individually mapped to a particular OFDM/SC-FDM subcarrier transmitted during an OFDM/SC-FDM symbol, referred to as a resource element (RE).
  • An RE is the smallest physical resource in LTE.
  • LTE also provides for MTMO (multi-input multi-output) operation where multiple layers of data are transmitted and received by multiple antennas and where each of the complex modulation symbols is mapped into one of the multiple transmission layers and then mapped to a particular antenna port.
  • Each RE is then uniquely identified by the antenna port, sub-carrier position, and OFDM symbol index within a radio frame as explained below.
  • LTE transmissions in the time domain are organized into radio frames, each having a duration of 10 ms.
  • Each radio frame consists of 10 sub- frames, and each sub-frame consists of two consecutive 0.5 ms slots.
  • Each slot comprises six indexed OFDM symbols for an extended cyclic prefix and seven indexed OFDM symbols for a normal cyclic prefix.
  • a group of resource elements corresponding to twelve consecutive subcarriers within a single slot is referred to as a resource block (RB) or, with reference to the physical layer, a physical resource block (PRB).
  • RB resource block
  • PRB physical resource block
  • a UE In order to access a cell served by an e B, a UE needs to synchronize with the cell and acquire particular system information.
  • the eNB reserves REs for the periodic downlink transmission of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to allow a UE to acquire frequency and symbol synchronization as well as frame timing.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the eNB also reserves REs for the transmission of system information needed for access over a physical broadcast channel (PBCH).
  • PBCH carries the master information block (MIB) that includes information relating to the cell's bandwidth and control channel configuration.
  • MIB master information block
  • PBCH physical broadcast channel
  • synchronization signals may be designed as follows.
  • the primary synchronization signal (PSS) is the same as currently defined in LTE.
  • the secondary synchronization signal (SSS) which is used to derive the physical cell identity (PCI) occupies 6 consecutive physical resource blocks with the same sequence as currently defined in LTE.
  • An extended synchronization signal (ESS) is also provided with at least 12 or 14 sequences used to support subframe timing (symbol within subframe, ie., 0, 1, . . . 1 1 or 0, 1,.., 13).
  • the ESS uses the same sequence as defined for the SSS and occupies 6 consecutive PRBs.
  • the resource mapping for the synchronization signals (PSS/SSS/ESS) is illustrated in Fig. 2.
  • a distributed BRS sequence spans the entire band excluding the middle 18 PRBs occupied by PSS, ESS, and SSS (i.e., the "synchronization region").
  • the BRS REs are interleaved for different beamformed antenna ports using frequency division multiplexing (FDM).
  • the PBCH is frequency division multiplexed with the PSS/ESS/SSS/distributed-BRS within a single OFDM symbol.
  • Fig. 3 illustrates the resource mapping for the transmission of synchronization signals, BRSs and the PBCH within one OFDM symbol. Note that for BRS transmission, different beamformed antenna ports are multiplexed in a frequency division multiplexing (FDM) manner.
  • FDM frequency division multiplexing
  • the total number of APs for BRS transmission within one subframe can be calculated as K ⁇ N sym .
  • the PBCH may be transmitted within one symbol.
  • BRS can be used for the channel estimation for the PBCH
  • different embodiments relating to the transmission scheme for the PBCH are described below. Transmission schemes for PBCH
  • no dedicated reference signal is embedded within the PBCH transmission with BRSs being used for PBCH channel estimation instead.
  • Fig. 4 illustrates one example of a PBCH and BRS resource mapping scheme.
  • BRSs are transmitted between two PBCH transmission blocks, and the BRSs in the middle can be used for the channel estimation for the PBCH.
  • the relationship between the transmit (Tx) beam or antenna port (AP) for BRS transmission and the AP used for PBCH transmission can be predefined in the specification or configured by higher layers via RRC signaling from the primary cell or an LTE cell in a non- standalone deployment scenario.
  • UE may derive the channel estimation for PBCH based on the channel estimation from the BRS.
  • PBCH transmission single AP or multiple APs, e.g., 2 can be used.
  • the AP for the transmission of the PBCH denote the AP #100; while for the latter case, denote the APs for the transmission of the PBCH as AP#100 and AP#101, respectively.
  • channel estimation for PBCH AP#100 can be derived from BRS AP# (0 + 8 ⁇ n sym )mod8 and AP# (1 + 8 ⁇ n sym )mod 8; while channel estimation for PBCH AP#101 can be derived from BRS AP# (4 + 8 ⁇ n sym )mod 8 and AP# (5 + 8 ⁇ n sym )mod 8.
  • the PBCH may use aggregated Tx beams from the BRS APs.
  • the first block of the PBCH may use the aggregated beams from BRS AP 0 and 1 and the second block of the PBCH may use the beams from BRS AP 2 and 3.
  • the estimated channel can be obtained as
  • DM-RS dedicated demodulation reference signals
  • DM-RS dedicated demodulation reference signals
  • a single port transmission scheme can be adopted for the PBCH.
  • space frequency block code (SFBC) or per- RE cyclic based transmit diversity can be adopted.
  • the DM-RS can be generated based on a pseudo-random sequence such as defined in the LTE specifications. Further, the pseudo-random sequence generator may be initialized as a function of OFDM symbol number and/or physical cell ID or virtual physical cell ID.
  • DM-RS pattern For different options for the DM-RS pattern can be provided.
  • Figs. 5 and 6 illustrate the examples of DM- RS pattern for single port transmission when PBCH occupies 8 REs and 12 REs, respectively. Note that a similar pattern can be defined for two port PBCH transmission.
  • Fig. 7 illustrates one example of a DM-RS pattern for a PBCH transmitted with two APs when the PBCH occupies 12 REs.
  • the DM-RS for these two APs can be multiplexed using frequency division multiplexing (FDM) or code division multiplexing (CDM).
  • FDM frequency division multiplexing
  • CDM code division multiplexing
  • Fig. 8 illustrates one example of a Tx diversity transmission scheme for PBCH transmission. In this example, 0 indicates the REs associated with AP#100, while 1 indicates the REs associated with AP #101.
  • the physical cell ID may be included in the 5G master information block (MIB) carried by the PBCH or masked with the cyclic redundancy check (CRC) to allow the UE to verify whether the PBCH is successfully decoded and/or used to generate the dedicated DM-RS associated with the PBCH. Further, to reduce UE power consumption, the same Tx beams may be applied for both synchronization signal and PBCH transmission.
  • MIB 5G master information block
  • CRC cyclic redundancy check
  • distributed BRS and PBCH may multiplexed in an FDM manner with other synchronization signals, i.e., PSS, SSS and ESS within one OFDM symbol.
  • BRS and PBCH are transmitted in the frequency resource excluding the middle 18 PRBs which are reserved for synchronization signals.
  • the number of REs allocated for each PBCH transmission block may be predefined in the specification.
  • the PBCH block may span the whole system bandwidth for better link budget. Embodiments relating to resource mapping schemes for BRS and PBCH transmission are described below.
  • the PBCH is transmitted adjacent to synchronization signals which include PSS/SSS/ESS. Further, BRS occupies the remaining REs in one OFDM symbol. Given that the PBCH and BRS are transmitted with different frequency resources, dedicated DM-RS may need to be inserted for the PBCH.
  • Fig. 9 illustrates one example of resource mapping of BRS and the PBCH which will be denoted as option 1.
  • BRS and PBCH REs are interleaved in the frequency domain.
  • the number of REs, e.g., K max allocated for each BRS block may fixed in the specification, where K max can be considered as the maximum number of Tx beams which can be supported at eNB within one symbol.
  • the eNB may only transmit the BRS with K (K ⁇ K max ) beamformed APs within one symbol.
  • (Kmax ⁇ K) REs can be left unused within one BRS block.
  • Fig. 10 illustrates the resource mapping of BRS and PBCH transmission for an example denoted as option 2.
  • the number of APs used for BRS transmission i.e., K can be indicated in the 5G master information block (MIB) carried by the PBCH or scrambled with the CRC for PBCH transmission or configured by higher layers via an LTE link.
  • Fig. 1 1 illustrates another example of resource mapping of BRS and the PBCH for the option 2. In this example, 4 REs are left unused within one BRS block.
  • BRS and the PBCH are interleaved in the frequency domain.
  • the number of APs, i.e., K used for BRS transmission within one symbol may be indicated via high layers from primary LTE cell.
  • Fig. 13 illustrates another example of resource mapping of BRS and PBCH for option 3.
  • BRS and xPBCH are interleaved in the frequency domain. Further, additional unused REs are inserted between xPBCH and BRS blocks. Similar to the option 2 and 3, K max can be fixed in the specification and K can be included in the xPBCH or configured by higher layers via LTE link.
  • Fig. 15 illustrates another example of resource mapping of BRS and PBCH for option 4. In this example, 8 unused REs are inserted between BRS and PBCH blocks.
  • the frequency position for the PBCH block may be same or different for different OFDM symbols.
  • a frequency hopping pattern can be defined as a function of the physical cell ID and symbol index so as to achieve inter-cell interference randomization.
  • the starting frequency position for each PBCH block transmission may be defined as
  • IpBCH f(flcell> n sym) where N ⁇ u is the physical cell ID and n sym is the symbol index.
  • Fig. 16 illustrates one example of frequency hopping for PBCH transmission.
  • the starting frequency position for each PBCH block transmission may be determined by the physical cell ID, symbol index and the subframe index, which can be used as a validation for the cell search result.
  • 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 ASIC.
  • ASIC Application Specific Integrated Circuit
  • processor shared, dedicated, or group
  • memory shared, dedicated, or group
  • 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.
  • Fig. 17 illustrates, for one embodiment, example components of a User Equipment (UE) device 100.
  • the UE device 100 may include application circuitry 102, baseband circuitry 104, Radio Frequency (RF) circuitry 106, firont- end module (FEM) circuitry 108 and one or more antennas 110, coupled together at least as shown.
  • RF Radio Frequency
  • FEM firont- end module
  • the application circuitry 102 may include one or more application processors.
  • the application circuitry 102 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processor(s) may include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.).
  • the processors may be coupled with and/or may include memory/storage and may be configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems to run on the system.
  • the baseband circuitry 104 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 104 may include one or more baseband processors and/or control logic to process baseband signals received from a receive signal path of the RF circuitry 106 and to generate baseband signals for a transmit signal path of the RF circuitry 106.
  • Baseband processing circuity 104 may interface with the application circuitry 102 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 106.
  • the baseband circuitry 104 may include a second generation (2G) baseband processor 104a, third generation (3G) baseband processor 104b, fourth generation (4G) baseband processor 104c, and/or other baseband processor(s) 104d for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.).
  • the baseband circuitry 104 e.g., one or more of baseband processors 104a-d
  • the radio control functions may include, but are not limited to, signal modulation/demodulation,
  • modulation/demodulation circuitry of the baseband circuitry 104 may include Fast-Fourier Transform (FFT), precoding, and/or constellation
  • encoding/decoding circuitry of the baseband circuitry 104 may include convolution, tail-biting convolution, turbo, Viterbi, and/or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • the baseband circuitry 104 may include elements of a protocol stack such as, for example, elements of an evolved universal terrestrial radio access network (EUTRAN) protocol including, for example, physical (PHY), media access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), and/or radio resource control (RRC) elements.
  • EUTRAN evolved universal terrestrial radio access network
  • a central processing unit (CPU) 104e of the baseband circuitry 104 may be configured to run elements of the protocol stack for signaling of the PHY, MAC, RLC, PDCP and/or RRC layers.
  • the baseband circuitry may include one or more audio digital signal processor(s) (DSP) 104f.
  • the audio DSP(s) 104f may be include elements for
  • compression/decompression and echo cancellation may include other suitable processing elements in other embodiments.
  • Components of the baseband circuitry may 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 104 and the application circuitry 102 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 104 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 104 may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/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 communications of more than one wireless protocol may be referred to as multi- mode baseband circuitry.
  • RF circuitry 106 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 106 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 106 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 108 and provide baseband signals to the baseband circuitry 104.
  • RF circuitry 106 may also include a transmit signal path which may include circuitry to up-convert baseband signals provided by the baseband circuitry 104 and provide RF output signals to the FEM circuitry 108 for transmission.
  • the RF circuitry 106 may include a receive signal path and a transmit signal path.
  • the receive signal path of the RF circuitry 106 may include mixer circuitry 106a, amplifier circuitry 106b and filter circuitry 106c.
  • the transmit signal path of the RF circuitry 106 may include filter circuitry 106c and mixer circuitry 106a.
  • RF circuitry 106 may also include synthesizer circuitry 106d for synthesizing a frequency for use by the mixer circuitry 106a of the receive signal path and the transmit signal path.
  • the mixer circuitry 106a of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 108 based on the synthesized frequency provided by synthesizer circuitry 106d.
  • the amplifier circuitry 106b may be configured to amplify the down-converted signals and the filter circuitry 106c may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals.
  • LPF low-pass filter
  • BPF band-pass filter
  • Output baseband signals may be provided to the baseband circuitry 104 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 106a of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 106a of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 106d to generate RF output signals for the FEM circuitry 108.
  • the baseband signals may be provided by the baseband circuitry 104 and may be filtered by filter circuitry 106c.
  • the filter circuitry 106c may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 106a of the receive signal path and the mixer circuitry 106a of the transmit signal path may include two or more mixers and may be arranged for quadrature downconversion and/or upconversion respectively.
  • the mixer circuitry 106a of the receive signal path and the mixer circuitry 106a of the transmit signal path may include two or more mixers and may be arranged for image rejection (e.g., Hartley image rejection).
  • the mixer circuitry 106a of the receive signal path and the mixer circuitry 106a may be arranged for direct downconversion and/or direct upconversion, respectively.
  • the mixer circuitry 106a of the receive signal path and the mixer circuitry 106a of the transmit signal path may be configured for super-heterodyne operation.
  • the output baseband signals and the input baseband signals may 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 may be digital baseband signals.
  • the RF circuitry 106 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 104 may include a digital baseband interface to communicate with the RF circuitry 106.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • a separate radio IC circuitry may be provided for processing signals for each spectrum, although the scope of the embodiments is not limited in this respect.
  • the synthesizer circuitry 106d may 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 may be suitable.
  • synthesizer circuitry 106d may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 106d may be configured to synthesize an output frequency for use by the mixer circuitry 106a of the RF circuitry 106 based on a frequency input and a divider control input. In some embodiments, the synthesizer circuitry 106d may be a fractional N/N+1 synthesizer.
  • frequency input may be provided by a voltage controlled oscillator (VCO), although that is not a requirement.
  • VCO voltage controlled oscillator
  • Divider control input may be provided by either the baseband circuitry 104 or the applications processor 102 depending on the desired output frequency.
  • a divider control input (e.g., N) may be determined from a look-up table based on a channel indicated by the applications processor 102.
  • Synthesizer circuitry 106d of the RF circuitry 106 may include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator.
  • the divider may be a dual modulus divider (DMD) and the phase accumulator may be a digital phase accumulator (DP A).
  • the DMD may be configured to divide the input signal by either N or N+l (e.g., based on a carry out) to provide a fractional division ratio.
  • the DLL may include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip-flop.
  • the delay elements may 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 106d may be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency may 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 may be a LO frequency (fix)). In some embodiments, the RF circuitry 106 may include an IQ/polar converter.
  • FEM circuitry 108 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 110, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 106 for further processing.
  • FEM circuitry 108 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 106 for transmission by one or more of the one or more antennas 110.
  • the FEM circuitry 108 may include a TX/RX switch to switch between transmit mode and receive mode operation.
  • the FEM circuitry may include a receive signal path and a transmit signal path.
  • the receive signal path of the FEM circuitry may include a low-noise amplifier (LNA) to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 106).
  • LNA low-noise amplifier
  • the transmit signal path of the FEM circuitry 108 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 106), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 110.
  • PA power amplifier
  • the UE device 100 may include additional elements such as, for example, memory/storage, display, camera, sensor, and/or input/output (I/O) interface.
  • additional elements such as, for example, memory/storage, display, camera, sensor, and/or input/output (I/O) interface.
  • Fig. 18 illustrates a block diagram of an example machine 500 upon which any one or more of the techniques (e.g., methodologies) discussed herein may perform.
  • the machine 500 may operate as a standalone device or may be connected (e.g., networked) to other machines.
  • the machine 500 may operate in the capacity of a server machine, a client machine, or both in server-client network environments.
  • the machine 500 may act as a peer machine in peer-to-peer (P2P) (or other distributed) network environment.
  • P2P peer-to-peer
  • the machine 500 may be a user equipment (UE), evolved Node B (eNB), Wi-Fi access point (AP), Wi-Fi station (STA), personal computer (PC), a tablet PC, a set-top box (STB), a personal digital assistant (PDA), a mobile telephone, a smart phone, a web appliance, a network router, switch or bridge, or any machine capable of executing instructions (sequential or otherwise) that specify actions to be taken by that machine.
  • UE user equipment
  • eNB evolved Node B
  • AP Wi-Fi access point
  • STA Wi-Fi station
  • PC personal computer
  • PDA personal digital assistant
  • STB set-top box
  • mobile telephone a smart phone
  • web appliance a web appliance
  • network router switch or bridge
  • Examples, as described herein, may include, or may operate on, logic or a number of components, modules, or mechanisms.
  • Modules are tangible entities (e.g., hardware) capable of performing specified operations and may be configured or arranged in a certain manner.
  • circuits may be arranged (e.g., internally or with respect to external entities such as other circuits) in a specified manner as a module.
  • the whole or part of one or more computer systems (e.g., a standalone, client or server computer system) or one or more hardware processors may be configured by firmware or software (e.g., instructions, an application portion, or an application) as a module that operates to perform specified operations.
  • the software may reside on a machine readable medium.
  • the software when executed by the underlying hardware of the module, causes the hardware to perform the specified operations.
  • module is understood to encompass a tangible entity, be that an entity that is physically constructed, specifically configured (e.g., hardwired), or temporarily (e.g., transitorily) configured (e.g., programmed) to operate in a specified manner or to perform part or all of any operation described herein.
  • each of the modules need not be instantiated at any one moment in time.
  • the modules comprise a general-purpose hardware processor configured using software
  • the general-purpose hardware processor may be configured as respective different modules at different times.
  • Software may accordingly configure a hardware processor, for example, to constitute a particular module at one instance of time and to constitute a different module at a different instance of time.
  • Machine 500 may include a hardware processor 502 (e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a main memory 504 and a static memory 506, some or all of which may communicate with each other via an interlink (e.g., bus) 508.
  • the machine 500 may further include a display unit 510, an alphanumeric input device 512 (e.g., a keyboard), and a user interface (UI) navigation device 514 (e.g., a mouse).
  • the display unit 510, input device 512 and UI navigation device 514 may be a touch screen display.
  • the machine 500 may additionally include a storage device (e.g., drive unit) 516, a signal generation device 518 (e.g., a speaker), a network interface device 520, and one or more sensors 521, such as a global positioning system (GPS) sensor, compass, accelerometer, or other sensor.
  • the machine 500 may include an output controller 528, such as a serial (e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (IR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • a serial e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (IR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • USB universal serial bus
  • NFC near field
  • the storage device 516 may include a machine readable medium 522 on which is stored one or more sets of data structures or instructions 524 (e.g., software) embodying or utilized by any one or more of the techniques or functions described herein.
  • the instructions 524 may also reside, completely or at least partially, within the main memory 504, within static memory 506, or within the hardware processor 502 during execution thereof by the machine 500.
  • one or any combination of the hardware processor 502, the main memory 504, the static memory 506, or the storage device 516 may constitute machine readable media.
  • machine readable medium 522 is illustrated as a single medium, the term “machine readable medium” may include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) configured to store the one or more instructions 524.
  • machine readable medium may include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) configured to store the one or more instructions 524.
  • machine readable medium may include any medium that is capable of storing, encoding, or carrying instructions for execution by the machine 500 and that cause the machine 500 to perform any one or more of the techniques of the present disclosure, or that is capable of storing, encoding or carrying data structures used by or associated with such instructions.
  • Non- limiting machine readable medium examples may include solid-state memories, and optical and magnetic media.
  • machine readable media may include: non-volatile memory, such as semiconductor memory devices (e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)) and flash memory devices; magnetic disks, such as internal hard disks and removable disks; magneto-optical disks; Random Access Memory (RAM); and CD-ROM and DVD-ROM disks.
  • non-volatile memory such as semiconductor memory devices (e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)) and flash memory devices
  • magnetic disks such as internal hard disks and removable disks
  • magneto-optical disks such as internal hard disks and removable disks
  • RAM Random Access Memory
  • CD-ROM and DVD-ROM disks CD-ROM and DVD-ROM disks.
  • machine readable media may include non-transitory machine readable media.
  • machine readable media may include machine readable media that is not a transitory
  • the instructions 524 may further be transmitted or received over a communications network 526 using a transmission medium via the network interface device 520 utilizing any one of a number of transfer protocols (e.g., frame relay, internet protocol (IP), transmission control protocol (TCP), user datagram protocol (UDP), hypertext transfer protocol (HTTP), etc.).
  • transfer protocols e.g., frame relay, internet protocol (IP), transmission control protocol (TCP), user datagram protocol (UDP), hypertext transfer protocol (HTTP), etc.
  • Example communication networks may include a local area network (LAN), a wide area network (WAN), a packet data network (e.g., the Internet), mobile telephone networks (e.g., cellular networks), Plain Old Telephone (POTS) networks, and wireless data networks (e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards known as Wi-Fi®, IEEE 802.16 family of standards known as WiMax®), IEEE 802.15.4 family of standards, a Long Term Evolution (LTE) family of standards, a Universal Mobile Telecommunications System (UMTS) family of standards, peer-to-peer (P2P) networks, among others.
  • LAN local area network
  • WAN wide area network
  • POTS Plain Old Telephone
  • wireless data networks e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards known as Wi-Fi®, IEEE 802.16 family of standards known as WiMax®
  • IEEE 802.15.4 family of standards e.g., Institute of Electrical and Electronics Engineers (IEEE
  • the network interface device 520 may include one or more physical jacks (e.g., Ethernet, coaxial, or phone jacks) or one or more antennas to connect to the communications network 526.
  • the network interface device 520 may include a plurality of antennas to wirelessly communicate using at least one of single-input multiple-output (SEVIO), multiple-input multiple-output (MEVIO), or multiple-input single-output (MISO) techniques.
  • SEVIO single-input multiple-output
  • MEVIO multiple-input multiple-output
  • MISO multiple-input single-output
  • the network interface device 520 may wirelessly communicate using Multiple User MEVIO techniques.
  • transmission medium shall be taken to include any intangible medium that is capable of storing, encoding or carrying instructions for execution by the machine 500, and includes digital or analog communications signals or other intangible medium to facilitate communication of such software. Additional Notes and Examples
  • an apparatus for an evolved Node B comprises: processing circuitry and memory to configure the eNB to provide an air interface to user equipments (UEs); wherein the circuitry is further to: generate beamforming reference signals (BRSs) that correspond to a plurality of beamformed antenna ports (APs); encode a master information block (MIB) for transmission over a physical broadcast channel (PBCH); and, map the BRSs and PBCH to time-frequency resource elements (REs) that are frequency-division multiplexed in the same orthogonal frequency-division multiplexing (OFDM) symbol.
  • BRSs beamforming reference signals
  • APs beamforming reference signals
  • MIB master information block
  • PBCH physical broadcast channel
  • REs time-frequency resource elements
  • Example 2 the subj ect matter of any of the Examples herein may optionally include wherein the relationship between an AP used for a BRS transmission and an AP used for PBCH transmission is predefined to allow a UE to derive channel estimation for the PBCH based on channel estimation for one or more BRS APs.
  • Example 3 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to inform the UE via radio resource control (RRC) signaling of the relationship between an AP used for BRS transmission and an AP used for PBCH transmission to allow a UE to derive channel estimation for the PBCH based on channel estimation for one or more BRS APs.
  • RRC radio resource control
  • Example 4 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the e B to map multiple PBCHs to REs in an OFDM symbol with each such PBCH transmitted from an AP that corresponds to one or more BRS APs.
  • Example 5 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map PBCHs to REs so as to be transmitted from an aggregate of APs with each such AP defined by one or more BRSs.
  • Example 6 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map demodulation reference signals (DM-RS) to REs corresponding to the same AP as the PBCH and in the same OFDM symbol as the PBCH to allow a UE to derive channel estimation for the PBCH based on the DM-RS.
  • DM-RS demodulation reference signals
  • Example 6a the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to transmit the DM-RS generated based on pseudo-random sequence that is initialized as a function of OFDM symbol number and/or physical cell ID or virtual physical cell ID.
  • Example 7 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map multiple DM-RS to REs corresponding to multiple APs and wherein the multiple DM-RS are frequency division multiplexed or code division multiplexed within an OFDM symbol.
  • Example 8 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map the PBCH to REs corresponding to two or more APs using space frequency block coding (SFBC) or per-RE cyclic based transmit diversity.
  • SFBC space frequency block coding
  • Example 8a the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB such that, for SFBC, two consecutive REs are grouped for PBCH transmission.
  • Example 8b the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the e B such that , for per-RE cyclic based transmit diversity, half of REs in one AP is used for PBCH transmission while another half of REs remain unused.
  • Example 8c the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to transmit a physical cell ID included in a master information block (MIB) carried by the PBCH or masked with a cyclic redundancy check (CRC).
  • MIB master information block
  • CRC cyclic redundancy check
  • Example 9 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map to REs of a same OFDM symbol, the PBCH, BRS, and synchronization signals which include a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and an extended synchronization signal (ESS).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • ESS extended synchronization signal
  • Example 10 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to the PBCH to REs adjacent to the synchronization signals and wherein BRS occupies the remaining REs in the OFDM symbol.
  • Example 1 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to interleave the BRS and PBCH in the frequency domain.
  • Example 1 1a the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB such that a maximum number of REs allowed to be allocated for each BRS block is predefined as K max and wherein, when the eNB transmits the BRS with K (K ⁇ K max ) beamformed APs within one OFDM symbol, K max — K REs are left unused within one BRS block.
  • Example 1 lb the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to transmit the number of APs used for BRS transmission, K , is indicated in the master information block (MIB) carried by the PBCH or scrambled with a cyclic redundancy check CRC for PBCH transmission.
  • MIB master information block
  • the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to insert unused REs between the PBCH and BRS blocks in an OFDM symbol.
  • Example 12 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map the PBCH to REs at different frequency positions in different OFDM symbols according to a defined frequency hopping pattern.
  • Example 12a the subj ect matter of any of the Examples herein may optionally include wherein the frequency hopping pattern is defined as a function of the physical cell ID and symbol index and/or subframe index and wherein the starting frequency position for each PBCH block transmission is defined as:
  • IxPBCH f(flcell> n sym)
  • N ⁇ u is the physical cell ID and n sym is the symbol index.
  • Example 13 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the eNB to map the PBCH and synchronization signals which include a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and an extended synchronization signal (ESS) to REs corresponding to the same AP or APs.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • ESS extended synchronization signal
  • Example 14 the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry includes a baseband processor.
  • Example 15 the subj ect matter of any of the Examples herein may optionally include: a radio transceiver connected to the processing circuitry; a directional antenna array connected to the radio transceiver and operated by the processing circuitry to provide APs for beamforming.
  • an apparatus for a UE (user equipment), comprises: memory and processing circuitry to configure the UE to: demodulate
  • BRSs beamforming reference signals
  • PBCH physical broadcast channel
  • REs time-frequency resource elements
  • OFDM orthogonal frequency-division multiplexing
  • MIB master information block
  • APs derive beamformed antenna ports
  • Example 17 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is to decode radio resource control (RRC) signaling information relating to the relationship between an AP used for BRS transmission and an AP used for PBCH
  • RRC radio resource control
  • Example 18 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to demodulate the PBCHs in an OFDM symbol where the PBCH is transmitted from an AP that corresponds to one or more BRSs.
  • Example 19 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is demodulate demodulation reference signals (DM-RS) transmitted from the same AP as the PBCH and in the same OFDM symbol as the PBCH to allow the UE to derive channel estimation for the PBCH from the DM-RS.
  • DM-RS demodulation reference signals
  • Example 20 the subject matter of any of the Examples herein may optionally include wherein the processing circuitry is further to demodulate multiple DM-RS corresponding to multiple APs and wherein the multiple DM-RS are frequency division multiplexed or code division multiplexed within an OFDM symbol.
  • Example 20a the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the UE to receive the PBCH from two or more APs using space frequency block coding or per-RE cyclic based transmit diversity.
  • Example 20b the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the UE to receive, in a same OFDM symbol, the PBCH, BRS, and
  • Example 20c the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the UE to receive, in the same OFDM symbol, the PBCH adjacent to the synchronization signals and wherein BRSs occupy the remaining REs in the OFDM symbol.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • ESS extended synchronization signal
  • Example 20d the subj ect matter of any of the Examples herein may optionally include wherein the processing circuitry is further to configure the UE to receive the PBCH at different frequency positions in different OFDM symbols according to a defined frequency hopping pattern.
  • Example 20e the subj ect matter of any of the Examples herein may optionally include wherein the frequency hopping pattern is defined as a function of the physical cell ID and symbol index and/or subframe index and wherein the starting frequency position for each PBCH block transmission is defined as:
  • IxPBCH n sym
  • N ⁇ u is the physical cell ID and n sym is the symbol index.
  • a computer-readable medium comprises instructions to cause a user equipment (UE), upon execution of the instructions by processing circuitry of the UE, to: receive beamforming reference signals (BRSs) that correspond to a plurality of beamformed antenna ports (APs); receive a master information block (MIB) over a physical broadcast channel (PBCH); and, receive the BRSs and PBCH mapped to time-frequency resource elements (REs) that are frequency-division multiplexed in the same orthogonal frequency-division multiplexing (OFDM) symbol .
  • BRSs beamforming reference signals
  • APs beamforming reference signals
  • MIB master information block
  • PBCH physical broadcast channel
  • REs time-frequency resource elements
  • Example 22 the subj ect matter of Example 21 any of the Examples herein may optionally include instructions to receive via radio resource control (RRC) signaling information relating to the relationship between an AP used for BRS transmission and an AP used for PBCH
  • RRC radio resource control
  • Example 23 the subj ect matter of Example 21 any of the
  • Examples herein may optionally include instructions to receive the PBCH in an OFDM symbol where the PBCH is transmitted from an AP that corresponds to one or more BRSs.
  • Example 24 the subject matter of Example 21 any of the
  • Examples herein may optionally include instructions to receive demodulation reference signals (DM-RS) from the same AP as the PBCH and in the same OFDM symbol as the PBCH to allow a UE to derive channel estimation for the PBCH based on channel estimation for the DM-RS.
  • DM-RS demodulation reference signals
  • Example 25 the subject matter of Example 21 any of the
  • Examples herein may optionally include instructions to receive multiple DM- RS corresponding to multiple APs and wherein the multiple DM-RS are frequency division multiplexed or code division multiplexed within an OFDM symbol.
  • Example 25a the subj ect matter of Example 21 any of the
  • Examples herein may optionally include instructions to configure the UE to receive the PBCH from two or more APs using space frequency block coding or per-RE cyclic based transmit diversity.
  • Example 25b the subj ect matter of Example 21 any of the
  • Examples herein may optionally include instructions to configure the UE to receive, in a same OFDM symbol, the PBCH, BRS, and synchronization signals which include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a secondary synchronization signal (SSS), a secondary synchronization signal (SSS), a secondary synchronization signal (SSS), a secondary synchronization signal (SSS), a secondary synchronization signal (PSS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (PSS), a secondary synchronization signal (PSS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization signal (SS), a secondary synchronization
  • SSS synchronization signal
  • ESS extended synchronization signal
  • Example 25c the subj ect matter of Example 21 any of the
  • Examples herein may optionally include instructions to configure the UE to receive, in the same OFDM symbol, the PBCH adjacent to the synchronization signals and wherein BRSs occupy the remaining REs in the OFDM symbol.
  • Example 25d the subj ect matter of Example 21 any of the Examples herein may optionally include instructions to configure the UE to receive the PBCH at different frequency positions in different OFDM symbols according to a defined frequency hopping pattern.
  • Example 25e the subj ect matter of Example 21 any of the Examples herein may optionally include wherein the frequency hopping pattern is defined as a function of the physical cell ID and symbol index and/or subframe index and wherein the starting frequency position for each PBCH block transmission is defined as:
  • IxPBCH n sym
  • N ⁇ u is the physical cell ID and n sym is the symbol index.
  • Example 26 a method of operating an eNB comprises executing the functions of the processing circuitry as recited in any of Examples 1-15.
  • an apparatus for an eNB comprises means for performing the functions of the processing circuitry as recited in any of Examples
  • a computer-readable medium comprises instructions to cause an evolved Node B (eNB), upon execution of the instructions by processing circuitry of the eNB, to perform functions of the processing circuitry as recited in any of Examples 1-15.
  • eNB evolved Node B
  • Example 29 a method of operating a UE comprising executing the functions of the processing circuitry as recited in any of Examples 16-20e.
  • Example 30 an apparatus for a UE comprises means for performing the functions of the processing circuitry as recited in any of Examples 16-20e.
  • the embodiments as described above may be implemented in various hardware configurations that may include a processor for executing instructions that perform the techniques described. Such instructions may be contained in a machine-readable medium such as a suitable storage medium or a memory or other processor-executable medium.
  • the embodiments as described herein may be implemented in a number of environments such as part of a wireless local area network (WLAN), 3rd Generation Partnership Project (3GPP) Universal Terrestrial Radio Access Network (UTRAN), or Long-Term-Evolution (LTE) or a Long-Term-Evolution (LTE) communication system, although the scope of the invention is not limited in this respect.
  • WLAN wireless local area network
  • 3GPP 3rd Generation Partnership Project
  • UTRAN Universal Terrestrial Radio Access Network
  • LTE Long-Term-Evolution
  • LTE Long-Term-Evolution
  • LTE Long-Term-Evolution
  • LTE Long-Term-Evolution
  • Antennas referred to herein may comprise one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas or other types of antennas suitable for transmission of RF signals.
  • a single antenna with multiple apertures may be used instead of two or more antennas.
  • each aperture may be considered a separate antenna.
  • antennas may be effectively separated to take advantage of spatial diversity and the different channel characteristics that may result between each of antennas and the antennas of a transmitting station.
  • antennas may be separated by up to 1/10 of a wavelength or more.
  • a receiver as described herein may be configured to receive signals in accordance with specific communication standards, such as the Institute of Electrical and Electronics Engineers (IEEE) standards including IEEE 802.11 standards and/or proposed specifications for WLANs, although the scope of the invention is not limited in this respect as they may also be suitable to transmit and/or receive communications in accordance with other techniques and standards.
  • IEEE Institute of Electrical and Electronics Engineers
  • the receiver may be configured to receive signals in accordance with the IEEE 802.16-2004, the
  • IEEE 802.16(e) and/or IEEE 802.16(m) standards for wireless metropolitan area networks including variations and evolutions thereof, although the scope of the invention is not limited in this respect as they may also be suitable to transmit and/or receive communications in accordance with other techniques and standards.
  • the receiver may be configured to receive signals in accordance with the Universal Terrestrial Radio Access Network (UTRAN) LTE communication standards.
  • UTRAN Universal Terrestrial Radio Access Network
  • IEEE 802.11 and IEEE 802.16 standards please refer to "IEEE Standards for Information Technology— Telecommunications and Information Exchange between Systems” - Local Area Networks - Specific Requirements - Part 11 "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY), ISO/IEC 8802-11 : 1999", and Metropolitan Area Networks - Specific
  • embodiments may include fewer features than those disclosed in a particular example.
  • the following claims are hereby incorporated into the Detailed Description, with a claim standing on its own as a separate embodiment.
  • the scope of the embodiments disclosed herein is to be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

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Abstract

L'invention concerne des procédés et un appareil pour émettre des signaux de référence de formation de faisceau (BRS) et un canal de diffusion physique (PBCH) dans des systèmes 5G. Des techniques pour mapper le BRS et le PBCH à des éléments de ressource sont également décrites. Dans certains modes de réalisation, des éléments de ressource de BRS et de PBCH sont mappés à un symbole OFDM unique. Le BRS peut être utilisé pour une démodulation du PBCH ou des signaux de référence de démodulation dédiés peuvent être utilisés à cette fin.
PCT/US2016/035276 2016-01-27 2016-06-01 Signaux de référence et canal de diffusion physique pour des systèmes 5g Ceased WO2017131806A1 (fr)

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