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    • 专利摘要:
    a new radio control signal (nr) that indicates one or more network parameters for long term evolution (lte) can be transmitted to nr ues to allow the nr ues to identify which resources carry lte signal (s). the nr ues can then receive one or more nr downlink signals over the resources remaining in a resource set without processing the resources that carry the lte signal (s). downlink signals nr may have a zero power level, or otherwise be overridden, on the resources that carry the lte signal (s).
    公开号:BR112019014028A2
    申请号:R112019014028
    申请日:2018-01-04
    公开日:2020-02-04
    发明作者:Maaref Amine；Ma Jianglei；Kar Kin Au Kelvin
    申请人:Huawei Tech Co Ltd；
    IPC主号:
    专利说明:

    SIGNAL INDICATION FOR NEW RADIO (NR) FLEXIBLE LONG TERM EVOLUTION (LTE) COEXISTENCE [0001] This application claims priority for Provisional Patent Application US 62 / 442,852 filed on January 5, 2017 and entitled Signal Indication for Flexible New Radio (NR) Long Term Evolution (LTE) Coexistence, and to US Patent Application Serial No. 15 / 860,334, filed on January 2, 2018 and entitled Signal Indication for Flexible New Radio (NR) Long Term Evolution (LTE ) Coexistence, whose contents are incorporated by reference here, as if reproduced in their entirety.
    TECHNICAL FIELD [0002] The present exhibition generally refers to telecommunications and, in particular modalities, to systems
    and methods for Indication of Signal for Coexistence in Long Evolution Term (LTE) again Radio (NR) Flexible • BACKGROUND[0003] 0 New Radio (NR) it is a protocol in
    Fifth Generation (5G) wireless telecommunication that will offer unified connectivity for smartphones, cars, utility meters, wearable items and other wirelessly enabled devices. 5G NR wireless networks may have the ability to dynamically redirect the unused bandwidth of Fourth Generation Long Term Evolution (LTE) wireless networks. In this way, the NR and LTE air interfaces can coexist across the same spectrum.
    SUMMARY [0004] Technical advantages are generally obtained
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    2/28 for the modalities of this exhibition that describe techniques for a unification message to support the Signal Indication for the Long Term Evolution Coexistence (LTE) of New Flexible Radio (NR).
    [0005] According to one modality, a method for receiving signals is provided. In this mode, the method includes the receipt of a New Radio (NR) control signal indicating a Long Term Evolution (LTE) network parameter, the determination, based on the LTE network parameter, of a subset of resources carrying an LTE signal (s), and receiving an NR downlink signal by one or more remaining resources in a set of resources. In one example, the resource set includes resources that are allocated to the UE. In the same example, or in another example, the resource set includes sets of control resources configured for the UE. In either of the preceding examples, or in another example, the NR downlink signal has the combined rate around the subset of resources carrying an LTE signal (s). In either of the preceding examples, or in another example, the NR downlink signal has the rate combined at the resource element (RE) level so that the subset of resources around which the downlink signal of NR has the combined fee consisting of an integer number of appeal elements (REs). In either of the preceding examples or in another example, the NR control signal indicates an LTE antenna port. In an example like this, determining the subset of resources carrying an LTE signal (s) may include determining that the subset of resources includes resources carrying a
    Petition 870190087317, of 9/5/2019, p. 8/46
    3/28 LTE reference signal (s) based on the LTE cell specific reference signal (CRS) pattern associated with the LTE antenna port. In either of the preceding examples, or in another example, the NR control signal indicates a frequency shift. In either of the preceding examples, or in another example, determining the subset of resources carrying an LTE signal (s) may include determining that the subset of resources includes resources carrying an LTE reference signal (s) based on in frequency shift. In either of the preceding examples, or in another example, the NR control signal indicates a number of Multiplexed symbols with Orthogonal Frequency Division (OFDM) in an LTE control channel. In an example like this, receiving the NR downlink signal by one or more remaining resources in the resource pool may include adjusting the start time for receiving an NR downlink signal for a period of time corresponding to the number of OFDM symbols in the LTE control channel. In either of the preceding examples, or in another example, the NR control signal indicates an LTE Multi-Diffusion Network (MBSFN) configuration of LTE. In an example like this, the determination of the resource subset carrying an LTE signal (s) may include the determination that the resource subset includes resources carrying the LTE MBSFN reference signal (s) based on the configuration MBSFN to LTE. In either of the preceding examples, or in another example, the NR control signal indicates an LTE Channel State Information Reference (CSI-RS) configuration. In one example
    Petition 870190087317, of 9/5/2019, p. 9/46
    4/28 like this, the determination of the subset of resources carrying an LTE signal (s) can include the determination that the subset of resources includes resources carrying a CSI-RS LTE signal (s) based on the configuration of CSI-RS of LTE. In either of the preceding examples, or in another example, receiving the NR downlink signal includes receiving one or more NR downlink signals by one or more remaining resources, where one or more downlink signals of NR have zero power levels by the subset of resources carrying an LTE signal (s). In such an example, one or more NR downlink signals may include an NR signal transmitted over a Physical Downlink Shared Channel (PDSCH), an NR control signal transmitted over a Downlink Control Channel. (PDCCH), a primary or secondary NR sync signal, an NR broadcast signal transmitted by an NR Physical Broadcast Channel (PBCH), or a combination thereof. In either of the preceding examples, or in another example, the NR control signal is received by an NR downlink physical control channel. In either of the preceding examples, or in another example, the NR control signal is received by an NR physical broadcast channel (PBCH). In either of the preceding examples, or in another example, the NR control signal is included in a minimum remaining system information (RMSI). In either of the preceding examples, or in another example, the NR control signal is carried by a higher layer Radio Resource Control (RRC) signal. In either of the preceding examples, or in another example,
    Petition 870190087317, of 9/5/2019, p. 10/46
    5/28 the NR control signal is carried by a Media Access Control (MAC) control element (MAC). In either of the preceding examples, or in another example, the NR control signal is carried by a combination of the higher layer Radio Resource Control (RRC) signal and a Control Element (CE) control Access to the Media (MAC). An apparatus for carrying out the method is also provided.
    [0006] According to another modality, a method of signal transmission is provided. In this modality, the method includes the receipt of a new radio control signal (NR) indicating a long-term evolution network parameter (LTE), the determination, based on the LTE network parameter, of a subset of resources carrying or otherwise reserved for the LTE signal (s), and the transmission of an NR uplink signal by one or more remaining resources in a set of resources without the transmission of the NR uplink signal by the subset of resources carrying or otherwise reserved for the LTE signal (s). In one example, the resource pool is allocated to the UE. In the same example, or in another example, the feature set includes features configured for uplink control signals. In either of the preceding examples, or in another example, the uplink signal of NR has the combined rate around the subset of resources carrying or otherwise reserved for the LTE signal. In either of the preceding examples, or in another example, determining the subset of resources carrying an LTE signal (s) may include determining that at least
    Petition 870190087317, of 9/5/2019, p. 11/46
    6/28 some resources in the resource subset are reserved for LTE Random Access Channel (RACH) transmissions based on the LTE network parameter in the NR control signal. In either of the preceding examples, or in another example, the determination that the subset of resources carrying an LTE signal (s) may include determining that at least some resources in the subset of resources carry good quality signal symbols ( SRS) based on the LTE network parameter on the NR control signal. In either of the preceding examples, or in another example, the determination that the subset of resources carrying an LTE signal (s) may include determining that at least some resources in the subset of resources carry an LTE data signal transmitted by a NR physical uplink channel (PUSCH) or an NR control signal transmitted by an NR physical uplink control channel (PUCCH) based on the LTE network parameter in the NR control signal.
    BRIEF DESCRIPTION OF THE DRAWINGS [0007] For a more complete understanding of this exhibition and its advantages, a reference is now made to the following description taken in conjunction with the associated drawings, in which:
    figure 1 is a diagram of a wireless communications network modality;
    figure 2 is a diagram of a spectrum configured for the coexistence of NR and LTE air interfaces;
    Figures 3A to 3C are diagrams of LTE patterns for different LTE antenna port configurations;
    Figure 4 is a diagram of a spectrum configured for
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    7/28 coexistence of air interfaces associated with two different types of network;
    figure 5 is a flow chart of a method modality for transmitting or receiving an NR signal by LTE resources;
    figure 6 is a diagram of another spectrum configured for the coexistence of NR and LTE air interfaces;
    figure 7 is a spectrum diagram in which different frequency domain resources are allocated to the NR and LTE air interfaces;
    figure 8 is a diagram of a spectrum in which different time domain resources are allocated to the NR and LTE air interfaces;
    figure 9 is a diagram of another spectrum in which different time domain resources are allocated to the NR and LTE air interfaces;
    Figure 10 is a diagram of a spectrum in which TTIs of different length are used for the transmission of LTE and / or NR signals;
    figure 11 is a diagram of another spectrum configured for the coexistence of NR and LTE air interfaces;
    figure 12 is a diagram of yet another spectrum configured for the coexistence of NR and LTE air interfaces;
    Figure 13 is a block diagram of a processing system modality for carrying out the methods described here; and figure 14 is a block diagram of a transceiver adapted for the transmission and reception of signals by
    Petition 870190087317, of 9/5/2019, p. 13/46
    8/28 a telecommunications network according to the example modalities described here.
    DETAILED DESCRIPTION OF ILLUSTRATIVE MODALITIES [0008] The structure, manufacture and use of modalities are discussed in detail below. It should be appreciated, however, that this exhibition provides many applied applied concepts that can be realized in a wide variety of specific contexts. The specific modalities discussed are merely illustrative of specific ways to make and use the claimed concepts, and do not limit the claimed concepts.
    [0009] It should be appreciated that LTE signal (s) refer to any (any) signal (s) transmitted in accordance with the LTE family of telecommunication protocols, including (but not limited to), a signal ( of LTE data transmitted by an LTE physical downlink shared channel (PDSCH) or an LTE physical uplink shared channel (PU-SCH), a transmitted LTE control signal (s) ( s) an LTE downlink control channel (PDCCH) or an LTE enhanced PDCCH (ePDCCH) or an LTE physical uplink control channel (PUCCH), and an LTE reference signal (s) (for example, a channel status information reference signal (CSI-RS), a common reference signal (CRS), demodulation reference symbols (DMRS), a primary and secondary synchronization signal (s), etc. .), as well as an LTE signal (s) communicated by an LTE physical broadcast channel (PBCH), a higher layer protocol s high resource control of
    Petition 870190087317, of 9/5/2019, p. 14/46
    9/28 LTE radio (RRC), and / or a media access control (MAC) control element (MAC). Likewise, an NR signal refers to any signal transmitted according to the NR family of telecommunication protocols, including (but not limited to) an NR data signal (s) transmitted by an NR PDSCH or a NR PUSCH, a control signal (s) transmitted by an NR PDCCH or NR PUCCH, and an NR reference signal (s), as well as other communicated NR signal (s) by an NR PBCH, an NRR higher layer protocol d NR, and / or an NR MAC control element. As used herein, the term NR control signal can refer to any control signal transmitted in accordance with the NR family of telecommunication protocols, including (but not limited to) an RRC signal (s), elements of MAC control (CEs), and downlink control (DCI) information, control signal (s) communicated by a PBCH, and minimum remaining system information (ISDN), as well as any (any ) other cell-specific, group-specific and / or UE-specific control signal (s). An ISMS can include specific minimum system information that is not transmitted in the PBCH. ISMS can be transmitted by a PDSCH. The PDSCH resources by which ISMS is transmitted can be identified by a DCI message transmitted by a common search space on the PDCCH. The DCI message can be CRC and is masked by a common RNTI, such as a system information RNTI (SI-RNTI). The expression LTE network parameter refers to any control or management information that can be used to identify which resources carry a signal (is)
    Petition 870190087317, of 9/5/2019, p. 15/46
    10/28 LTE, including (but not limited to) an antenna port configuration, a physical control channel format indicator, such as information ported in LTE PCFICH, a frequency shift or shift, a configuration LTE subframe, an MBSFN configuration, a CSI-RS configuration, a reference signal resource element location, control channel resources, etc. It should be appreciated that the terms signal, signal (s) and signals are used interchangeably throughout this reference to one or more signals, and that none of these terms should be constructed as referring to a single signal to exclude multiple signals, or multiple signals for the exclusion of a single signal, unless otherwise specified.
    [0010] Downlink data channel resources of an LTE subframe may be left unused when the LTE network capacity exceeds a demand spectrum of LTE user equipment (UEs), as may commonly occur between periods peak usage of the LTE network. In some cases, 5G NR wireless networks can dynamically allocate unused data channel resources from an LTE subframe to 5G NR UEs. However, even when data channel resources from an LTE subframe are not being used to carry an LTE signal (s), the LTE subframe may nevertheless carry a control and reference signal to the LTE UEs. The LTE control and reference signal can interfere with the reception of an NR downlink transmission by NR UEs, if the resources carrying the LTE control / reference signal are processed by the NR UEs. However, the number of
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    11/28 multiplexed symbols with orthogonal frequency division (OFDM) on a physical downlink control channel (PDCCH) in an LTE subframe, as well as the resource element (RE) locations that are used to carry a signal ( is) of reference in the LTE subframe, vary, depending on the LTE subframe configuration. Therefore, techniques for notifying NR UEs about which resources carrying an LTE signal (s) are necessary to achieve seamless coexistence of the NR and LTE air interfaces. The modalities of this exposure transmit an NR control signal that indicates one or more LTE network parameters to the NR UEs to allow the NR UEs to identify which resources carry an LTE signal (s). NR UEs can then receive one or more LTE downlink signal (s) or channels for resources remaining in a set of resources. The resource set may include concession-based resources allocated to the UE and / or non-concession resources that can be configured in a semi-static manner for the UE. The NR downlink signal (s) or channels may have a zero power level, or be otherwise erased, by resources that carry the LTE signal (s). The NR downlink signal (s) may include data channels or NR control, for example, an NR Physical Downlink Shared Channel (PDSCH), a Downlink Control Channel (PDCCH) of NR, a primary or secondary NR sync signal, a Physical Broadcast Channel (PBCH), or a combination thereof. In one embodiment, the NR control signal indicates an LTE antenna port, and the UE UE determines which resources carry a reference signal (s) from
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    12/28
    LTE based on a common LTE reference signal standard (CRS) associated with the LTE antenna port. In these modalities, the mapping of the LTE CRS standards to the LTE antenna ports can be a priori information from the UE of NR. In another embodiment, the NR control signal indicates a control channel format including a number of multiplexed symbols with orthogonal frequency division (OFDM) in an LTE subframe that are used to carry the LTE control channel, for example. example, the PDCCH. In these embodiments, the UE UE can set a start time for processing a NR link downlink or channel for a period of time corresponding to the number of OFDM symbols in the LTE control channel. The time shift for adjusting the transmission time of the NR downlink signal can be indicated on an NR PDCCH. In another embodiment, the NR control signal may indicate a frequency shift for adjustment by a frequency misalignment due to different manipulation of DC subcarrier in NR and LTE or to the provision of cell specific interference randomization benefits. In another modality, fractional PRBs can be used in NR to address potential frequency misalignment due to different handling of DC subcarriers in LTE and NR. In another embodiment, the NR control signal indicates a number of frequency division multiplexed symbols (OFDM) that are occupied by the LTE reference signal (s). In these modalities, the UE of NR can deviate from the symbols corresponding to the number of OFDM symbols in the LTE symbols indicated by the NR control signal, when
    Petition 870190087317, of 9/5/2019, p. 18/46
    13/28 processing an NR downlink signal or transmitting an NR uplink signal. In another embodiment, an NR demodulation reference signal (DM-RS) is mapped to a set of time-frequency resource elements (REs) that avoid LTE reference signal (s). In yet another embodiment, the NR control signal indicates a physical cell identifier (ID) of the base station, and the UE can identify resources by carrying an LTE reference signal based on a frequency shift associated with the cell ID physics.
    [0011] In yet another modality, the NR control signal indicates a single frequency multicast-diffusion (MBSFN) network configuration of LTE, and the UE of NR determines which resources carry MBSFN reference signal (s) based on the LTE MBSFN configuration. In these modalities, the mapping of resource elements to the LTE MBSFN reference signal (s) for different LTE MBSFN configurations can be a priori information of the UE of NR. In yet another embodiment, the NR control signal indicates an LTE channel status information (CSI-RS) signal configuration, and the UE of NR determines which resources carry the LTE CSIRS signal (for example, example, non-zero power (NZP) CSI-RS symbols, based on the LTE CSI-RS configuration. In these modalities, the mapping of resource elements to LTE CSI-RS signal (s) for different LTE CSI-RS configurations can be a priori information of the UE of NR. The NR control signal can be an NR layer 1 (Ll) signal (for example, dynamic downlink control (DCI) information on a physical control channel).
    Petition 870190087317, of 9/5/2019, p. 19/46
    14/28 NR downlink). Alternatively, the NR control signal indicating the LTE parameter can be received via an NR broadcast channel. As yet another alternative, the NR control signal indicating the data packet and LTE can be received by a higher layer control channel, such as an EU-specific radio resource control (RRC) signal or a media access control (MAC) control element.
    [0012] It should be appreciated that the NR control signal can be used to notify NR UEs of uplink resources that carry LTE signal (s). For example, an NR UE can receive an NR control signal indicating an LTE parameter, determine resources that carry or otherwise are reserved for LTE uplink signal (s) based on the LTE parameter, and, then, transmit an NR uplink signal over one or more remaining resources in a set of resources without the transmission of the NR uplink signal by those resources that carry the LTE uplink signal (s). The NR control signal can identify resources reserved for LTE random access channel (RACH) uplink transmissions, LTE good quality reference signal symbols (SRS), physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), or combinations thereof. These and other features are described in more detail below.
    [0013] Figure 1 is a network 100 for data communication. The network 100 comprises a base station 110 that has a coverage area 101, a plurality of UEs 120 and a
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    15/28 backhaul network 130. As shown, base station 110 establishes uplink (dashed line) and / or downlink (dotted line) connections with UEs 120, which serve to transport data from UEs 120 to base station 110 and vice versa. Data ported by uplink / downlink connections can include data communicated between UEs 120, as well as data communicated to / from a remote end (not shown) via the backhaul network 130. As used here, the expression station base refers to any component (or a collection of components) configured to provide wireless access to a network, such as a base station (BS) or a transmit / receive point (TRP), a macrocell, a femtocell , a Wi-Fi access point (AP), or other wirelessly enabled devices. Base stations can provide wireless access according to one or more wireless communication protocols, for example, new fifth generation radio (5G_NR), long term evolution (LTE), advanced LTE (LTE-A), wireless access high-speed package (HSPA), Wi-Fi 802.lla / b / g / n / ac, etc. As used here, the term UE refers to any component (or a collection of components) capable of establishing a wireless connection to a base station, such as a 4G LTE or fifth generation (5G) UE, a UE of NR, a mobile station (STA), and other wirelessly enabled devices. In some embodiments, network 100 may comprise several other wireless devices, such as relays, low power nodes, etc.
    [0014] The unused resources of a downlink LTE subframe can be reallocated to carry
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    16/28 NR downlink signal / data for one or more NR UEs. Figure 2 is a diagram of a spectrum 200 configured for the coexistence of NR and LTE air interfaces. A central portion 210 of the spectrum 200 is licensed for LTE signal (s), and the outer portions 220 of the spectrum 200 are statically allocated to an NR signal. As shown, some features of the central portion 210 of the spectrum 200 are used for an LTE downlink control (PDCCH) channel signal and an LTE downlink shared channel (PDSCH) channel signal. In this example, the resource sets 215 of the central portion 210 of the spectrum 200 that are not used for the LTE PDCCH or the LTE PDSCH are dynamically allocated to the NR signal.
    [0015] There may be resource elements (REs) in resource sets 215 that carry an LTE reference signal. RE locations in resource sets 215 may vary based on a common LTE reference signal (CRS) pattern associated with one or multiple antenna ports used for the transmission of the LTE reference signal (s) . Figures 3A to 3C are diagrams of RE locations used to transport the LTE reference signal for different antenna patterns. In some embodiments, the NR 225 sync signal blocks (SS) are communicated in the outer portions 220 of the 200 spectrum. In particular, Figure 3A is a diagram of an LTE 310 CRS pattern for the LTE antenna port. No. 1, figure 3B is a diagram of an LTE CRS pattern 30 0 for the LTE antenna port No. 2, and figure 3C is a diagram of an LTE 330 CRS pattern for the
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    17/28 LTE antenna No. 4. It should be appreciated that the LTE CRS standards 310, 320, 330 represent a few examples of possible LTE CRS standards, and that different LTE antenna ports (for example, the antenna port N ° 0, antenna port N ° 3, antenna port N ° 5, ... antenna port N ° 22, etc.) can be associated with different CRS antenna patterns.
    [0016] In some embodiments, the reference number UEs and / or NR access points may perform a rate combination on resource sets 215 of the central portion 210 of the spectrum 200 that are dynamically allocated to an NR signal for compensation by resources that carry an NR control or reference signal. A rate combination can be performed by increasing the coding rate on remaining resources for compensation for deletion, or otherwise not transmitting / receiving NR signal (s), by a subset of resources carrying LTE signal (s) . Furthermore, the fact that the resources in the central portion 210 of the spectrum 200 are used to carry NR data and / or control channels can be transparent to LTE UEs.
    [0017] Although much of this exhibition discusses modality techniques that allow an NR UE to receive an NR or channel downlink signal by unused resources from an LTE subframe, it should be appreciated that those modality techniques can be adapted to use on other types of networks in the same way. Figure 4 is a diagram of a spectrum 400 configured for the coexistence of air interfaces associated with two different types of network. In particular, spectrum 400 includes a central portion 410 and
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    18/28 two external portions 420. The external portions 420 of the spectrum 400 are statically allocated to a downlink signal associated with a first type of network. The central portion 410 of spectrum 400 is licensed for a downlink signal of a second type of network that is different from the first type of network. A semi-static or dynamic resizing of the central portion of the bandwidth associated with the second type of network is also possible in some modalities. As shown, some features of the central portion 410 of the spectrum 400 are used for a control signal of the second type of network, and other features of the central portion 410 of the spectrum are used for a data signal of the second type of network. In this example, resource sets 415 of the central portion 410 of spectrum 400 that are not used for a data or control signal of the second type of network are dynamically allocated to a downlink signal of the first type of network.
    [0018] Similar to the specific NR / LTE modalities discussed above, there may be REs in resource sets 415 that carry a reference and / or control signal for the second type of network. Those resource locations in resource sets 415 that carry a reference signal of the second type of network may vary, based on a network parameter associated with the second type of network, and it may be beneficial to notify UEs associated with the first type of network of this parameter, so that they can avoid processing REs carrying a signal associated with the second type of network, when receiving a downlink signal associated with the first type of network. In some embodiments, a synchronization signal 425 for the second
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    19/28 network type is communicated in the external portions 420 of the spectrum 400. Figure 5 is a flowchart of a method modality 500 for transmitting or receiving an NR signal by LTE resources, as can be performed by a UE. In step 510, the UE receives an NR control signal indicating an LTE network parameter. In step 520, the UE determines a subset of resources carrying or otherwise reserved for LTE signal (s) based on the LTE network parameter. In step 530, the UE transmits or receives an NR signal for one or more resources remaining in a set of resources allocated to the UE, without the transmission of the NR signal, or otherwise processing, the subset of resources carrying or otherwise reserved for the LTE signal (s).
    [0019] In some embodiments, an LTE subframe will include an improved LTE PDCCH (ePDCCH). The LTE ePDCCH can be similar to the LTE PDCCH, except that the LTE PDCCH can be duplexed with time division (TDD) with the LTE PDSCH and the LTE ePDCCH can be duplexed with frequency division (FDD) with PDSCH of LTE. Figure 6 is a diagram of a spectrum 600 configured for the coexistence of NR and LTE air interfaces. Similar to Figure 2, a central portion 610 of the spectrum 600 is licensed for LTE signal (s), and the outer portions 620 of the spectrum 600 are statically allocated to the NR signal. In some modalities, the size of the central portion of the band associated with LTE can be resized in a static, semi-static or dynamic way, based on the expected load of the LTE network. In this example, the resources of the central portion 610 of the spectrum 600 are used for a PDCCH signal
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    20/28 LTE, an LTE ePDCCH signal and an LTE PDSCH signal. In addition, resource sets 615 of central portion 610 of spectrum 600 that are not used for LTE PDCCH, LTE ePDCCH or LTE PDSCH are dynamically allocated to the NR signal.
    [0020] In some modalities, LTE resources and NR resources are multiplexed in the frequency domain. In these modalities, the allocation of spectrum for LTE / NR resources can be updated dynamically and / or semi-statically. Figure 7 is a diagram of a spectrum 700 in which different frequency domain resources are allocated to the NR and LTE air interfaces. As shown, the spectrum allocation for NR and LTE air interfaces is updated in a first time interval (ti), so that at least some frequency sub-bands are reallocated from the LTE air interface to the NR air interface. In a second time interval (t 2 ), those frequency sub-bands are allocated back to the LTE air interface.
    [0021] In other modalities, LTE resources and NR resources are multiplexed in the time domain. Figure 8 is a diagram of a spectrum 800, in which different time domain resources are allocated to the NR and LTE air interfaces. In this example, multiplexed symbols with orthogonal frequency division (OFDM) are allocated in a semi-static manner to the NR and LTE air interfaces. In other examples, OFDM symbols are dynamically allocated to the NR and LTE air interfaces. Figure 9 is a diagram of a spectrum 900 in which different time domain resources are allocated to the NR and LTE air interfaces.
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    21/28
    In this example, OFDM symbols are dynamically allocated to the NR and LTE air interfaces on a symbol-by-symbol basis.
    [0022] In some embodiments, time intervals (TTIs) of different length are used for the transmission of LTE and / or NR signal (s). Figure 10 is a diagram of a spectrum 1000 in which TTIs of different length are used for the transmission of LTE and / or NR signal (s). In this example, a long TTI is used for the transmission of a signal over a 1010 portion of the 1000 spectrum, a medium TTI is used for the transmission of a signal by a 1020 potion of the 1000 spectrum, and a short TTI is used for the transmission of a signal over a 1030 portion of the 1000 spectrum. The average TTI can be the extension of TTI used in legacy 4G LTE networks.
    [0023] Figure 11 is a diagram of a spectrum 1130 configured for the coexistence of NR and LTE air interfaces. As shown, spectrum 1130 is the sum of central frequencies 1110 licensed for the LTE signal (s) and external frequencies 1120 licensed for an NR signal. In this example, the center frequencies 1110 and the external frequencies 1120 are separated by the LTE receiver using a bandpass filter.
    [0024] Figure 12 is a diagram of a 1230 spectrum configured for the coexistence of NR and LTE air interfaces. As shown, spectrum 1230 is the sum of central frequencies 1210 licensed for LTE signal (s) and external frequencies 1220 licensed for the NR signal. In this example, guard bands 1231, 1239 separate central frequencies 1210 from external frequencies 1120.
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    22/28 [0025] Coexistence with LTE can be transparent to NR UEs not programmed in the LTE region. Only NR UEs programmed in LTE regions need to be signaled, in order to avoid CRS signal (s). NR UEs can also take advantage of a flexible NR subframe start time in order to avoid an LTE control region at the beginning of an LTE subframe.
    [0026] In some modalities, NR networks can support software-defined air interfaces that can be dynamically tailored to support different types of traffic, in order to balance latency and dynamic control signal processing time. In some embodiments, the NR and LTE air interfaces can have an intra-port coexistence, so that the respective air interfaces are used to transport data over the same carrier frequency. The existence of the NR air interface can be transparent to LTE UEs. In some embodiments, NR APs / UEs can perform a resource fee combination in an LTE subframe that is dynamically allocated to an NR signal to avoid interference with an LTE control and reference signal.
    [0027] LTE / NR coexistence schemes based on FDM can offer several benefits. For example, FDM-based LTE / NR coexistence schemes may allow flexible frequency domain location of frequency domain location NR sync signal (SS) blocks and a flexible time domain start point of NR subframes, to avoid LTE control regions. One or multiple blocks
    Petition 870190087317, of 9/5/2019, p. 28/46
    23/28 SS of NR can carry primary sync signal symbols (PSS), secondary sync signal symbols (SSS) and / or a physical broadcast channel (PBCH). When multiple beam directions are used, multiple NR SS blocks that include bursts of SS can be multiplexed by a group of resources. Also, with an LTE signal (s) configured (s) for the central portion of the spectrum, there may be little or no interference between an LTE reference signal and NR SS blocks. In addition, LTE / NR coexistence schemes based on FDM can capitalize on NR independent unified flexible AI design properties, where each part of the band can be flexibly configured with its own parameters, for example, a NR can flexibly occupy any abandoned bandwidth not used by LTE, etc. In addition, LTE / NR coexistence schemes based on FDM can rely on F-OFDM waveforms, rather than on guard intervals and / or payment of LTE signal (s). In addition, FDM-based LTE / NR coexistence schemes may be transparent to NR UEs that are not programmed in the central portion of the spectrum, for example, the spectrum portion licensed for LTE signal (s).
    [0028] Figure 13 illustrates a block diagram of a modality of a 1300 processing system for executing the methods described here, which can be installed in a central device. As shown, processing system 1300 includes processor 1304, memory 1306 and interfaces 1310 to 1314, which may (or may not) be arranged as shown in figure 13. Processor 1304
    Petition 870190087317, of 9/5/2019, p. 29/46
    24/28 can be any component or collection of components adapted to perform computations and / or other processing-related tasks, and memory 1306 can be any component or collection of components adapted to store programming and / or instructions for execution by processor 1304. A means for setting a context for a UE may include processor 1304. In one embodiment, memory 1306 includes a non-transitory, computer readable medium. The interfaces 1310, 1312, 1314 can be any component or collection of components that allows the 1300 processing system to communicate with other devices / components and / or a user. For example, one or more of the interfaces 1310, 1312, 1314 can be adapted for communicating data, control or management messages from processor 1304 to applications installed on the central device and / or a remote device. As another example, one or more interfaces 1310, 1312, 1314 can be adapted to allow a user or user device (eg, a personal computer (PC), etc.) to interact / communicate with the processing system 1300. The 1300 processing system can include components
    additional not described in figure 13, such as one storage long term (for example, a memory no volatile, etc.). [0029] In some modalities, the system in
    1300 processing is included in a network device that is accessing, or otherwise part of, a telecommunications network. In one example, the 1300 processing system is on a network side device on a network
    Petition 870190087317, of 9/5/2019, p. 30/46
    25/28 wireless or wired telecommunications, such as a base station, a relay station, a programmer, a controller, a gateway, a router, an application server, or any other device on the telecommunications network. In other embodiments, the 1300 processing system is on a user side device accessing a wireless or wired telecommunications network, such as a mobile station, user equipment (UE), a personal computer (PC), a tablet, a wearable communications device (for example, a smart wristwatch, etc.), or any other device adapted for access to a telecommunications network.
    [0030] In some embodiments, one or more of the interfaces 1310, 1312, 1314 connect the processing system 1300 to a transceiver adapted for the transmission and reception of a signal by the telecommunications network. Figure 14 illustrates a block diagram of a transceiver 1400 adapted for the transmission and reception of a signal by a telecommunications network. The 1400 transceiver can be installed in a central device. As shown, transceiver 1400 comprises a network side interface 1402, a coupler 1404, a transmitter 1406, a receiver 1408, a signal processor 1410, and a device side interface 1412. The network side interface 1402 can include any component or collection of components adapted for the transmission or reception of a signal over a wireless or wired telecommunications network. The network side interface 1402 can also include any component or collection of components adapted for the transmission or reception of a
    Petition 870190087317, of 9/5/2019, p. 31/46
    26/28 signal through a short-range interface. The network side interface 1402 can also include any component or collection of components adapted for the transmission or reception of a signal by a Uu interface. Coupler 1404 can include any component or component collection adapted for bidirectional communication via the network side interface 1402. Transmitter 1406 can include any component or collection of components (eg, upconverter, power amplifier, etc.) adapted for converting a baseband signal to a modulated carrier signal suitable for transmission over the network side interface 1402. A means for transmitting an initial message from an access procedure may include a transmitter 1406. Receiver 1408 may include any component or collection of components (e.g., down converter, low noise amplifier, etc.) adapted for converting a carrier signal received by the network side interface 1402 into a baseband signal. A means for receiving mobile subscriber identifiers, initial downlink messages from access procedures, and requests forwarded for connection to a network may include receiver 1408.
    [0031] The signal processor 1410 can include any component or collection of components adapted for the conversion of a baseband signal to a data signal suitable for communication through the device side interface (s) 1412 or vice versa. The device side interface (s) 1412 may include any component or collection of components adapted for communication of data signals between the signal processor 1410 and components on the
    Petition 870190087317, of 9/5/2019, p. 32/46
    27/28 central device (for example, the 1300 processing system, local area network (LAN) ports, etc.).
    [0032] Transceiver 1400 can transmit and receive signal by any type of means of communication. In some embodiments, the 1400 transceiver transmits and receives signals wirelessly. For example, the 1400 transceiver can be a wireless transceiver adapted for communication according to a wireless telecommunications protocol, such as a cellular protocol (for example, a long-term evolution (LTE), etc.), a protocol wireless local area network (WLAN) (for example, Wi-Fi, etc.), or any other type of wireless protocol (for example, Bluetooth, near field communication (NFC), etc.). In these embodiments, the network side interface 1402 comprises one (a) or more antennas / radiation elements. For example, network side interface 1402 can include a single antenna, multiple separate antennas, or a multiple antenna array configured for multiple layer communication, for example, a single input and multiple output (SIMO), a multiple input and single output (MISO), multiple input and multiple output (MIMO), etc. In other modalities, the 1400 transceiver transmits and receives signals through a wired medium, for example, a twisted pair cable, a coaxial cable, optical fiber, etc. Specific processing systems and / or transceivers may use all of the components shown, or only a subset of the components, and the levels of integration may vary from device to device.
    [0033] Although the claimed concepts have been described with reference to illustrative modalities, this
    Petition 870190087317, of 9/5/2019, p. 33/46
    28/28 description is not intended to be constructed in a limiting sense. Various modifications and combinations of the illustrative modalities, as well as other modalities, will be evident to people versed in the technique, through a reference to the description. Therefore, the attached claims are intended to involve any modifications or modalities like these.
    权利要求:
    Claims (24)
    [1]
    1. Method, characterized by the fact that it comprises:
    receive, by a User Equipment (UE), a New Radio (NR) control signal indicating a Long Term Evolution (LTE) network parameter;
    determine, based on the LTE network parameter, a subset of resources carrying an LTE signal (s); and receiving, by the UE, a NR downlink signal for one or more remaining resources in a set of resources.
    [2]
    2/5 characterized by the fact that the determination of the subset of resources carrying an LTE signal (s) is characterized by the fact that:
    determines that the subset of resources includes resources carrying an LTE reference signal (s) based on an LTE cell-specific reference signal (CRS) pattern associated with the LTE antenna port.
    2. Method, according to claim 1, characterized by the fact that the set of resources includes resources that are allocated to the UE.
    [3]
    3/5 LTE control.
    3. Method, according to claim 1 or 2, characterized by the fact that the resource set includes control resource sets configured for the UE.
    [4]
    4/5 subset of resources carrying the LTE signal (s).
    4. Method according to any one of claims 1 to 3, characterized by the fact that the NR downlink signal has the combined rate around the subset of resources carrying the LTE signal (s).
    [5]
    5/5
    5. Method according to claim 4, characterized by the fact that the NR downlink signal has the combined rate at the resource element (RE) level, so that the subset of resources around which the signal NR downlink link has the combined rate consisting of an integer number of resource elements (REs).
    [6]
    6. Method according to any one of claims 1 to 5, characterized in that the NR control signal indicates an LTE antenna port.
    [7]
    7. Method according to claim 6,
    Petition 870190087312, of 9/5/2019, p. 8/13
    [8]
    8. Method according to any one of claims 1 to 7, characterized in that the NR control signal indicates a frequency shift.
    [9]
    9. Method according to claim 8, in which the determination of the subset of resources carrying an LTE reference signal (s) is characterized by the fact that:
    determines that the resource subset includes resources carrying an LTE reference signal (s) based on frequency shift.
    [10]
    10. Method according to any one of claims 1 to 9, characterized by the fact that the NR control signal indicates a number of Multiplexed symbols with Orthogonal Frequency Division (OFDM) in an LTE control channel.
    [11]
    11. Method, according to claim 10, characterized by the fact that the receipt of the NR downlink signal by one or more remaining resources in the set of resources is characterized by the fact that:
    sets the start time for receiving an NR downlink signal for a period of time corresponding to the number of OFDM symbols in the
    Petition 870190087312, of 9/5/2019, p. 9/13
    [12]
    12. Method according to any one of claims 1 to 11, characterized by the fact that the NR control signal indicates a LTE Multi-Broadcast-Diffusion Network (MBSFN) configuration.
    [13]
    13. Method, according to claim 12, characterized by the fact that the determination of the subset of resources carrying an LTE reference signal (s) is characterized by the fact that:
    determines that the resource subset includes resources carrying an LTE MBSFN reference signal (s) based on the LTE MBSFN configuration.
    [14]
    14. Method according to any one of claims 1 to 13, characterized in that the NR control signal indicates an LTE Channel State Information Reference (CSI-RS) configuration.
    [15]
    15. Method, according to claim 14, characterized by the fact that the determination of the subset of resources carrying an LTE reference signal (s) is characterized by the fact that:
    determines that the resource subset includes resources carrying an LTE CSI-RS reference signal (s) based on the LTE CSI-RS configuration.
    [16]
    16. Method, of a deal with any an of claims 1 to 15, featured by the fact in what The receiving the signal downlink in NR is characterized by the fact that: receives one or more downlink signals in NR by one or more resources remaining, one or more signals in
    downlink NR having zero power levels for
    Petition 870190087312, of 9/5/2019, p. 10/13
    [17]
    17. Method according to claim 16, characterized by the fact that one or more NR downlink signals include an NR signal transmitted over a Physical Downlink Shared Channel (PDSCH), an NR control signal transmitted by a Physical Downlink Control Channel (PDCCH), a primary or secondary NR synchronization signal, an NR broadcast signal transmitted by an NR Physical Broadcast Channel (PBCH), or a combination thereof.
    [18]
    18. Method according to any one of claims 1 to 17, characterized in that the NR control signal is received by an NR downlink physical control channel.
    [19]
    19. Method according to any one of claims 1 to 18, characterized in that the NR control signal is received by a physical NR diffusion channel (PBCH).
    [20]
    20. Method according to any one of claims 1 to 19, characterized in that the NR control signal is included in the minimum remaining system information (ISMS).
    [21]
    21. Method according to any one of claims 1 to 20, characterized in that the NR control signal is carried by a higher layer Radio Resource Control (RRC) signal.
    [22]
    22. Method according to any one of claims 1 to 21, characterized by the fact that the NR control signal is carried by a Media Access Control (MAC) control element (MAC).
    Petition 870190087312, of 9/5/2019, p. 11/13
    [23]
    23. Method according to any one of claims 1 to 22, characterized in that the NR control signal is carried by a combination of the higher layer radio resource control (RRC) signal and an control (CE) media access control (MAC).
    [24]
    24. User equipment (UE), characterized by the fact that it comprises:
    a processor; and a non-transitory computer-readable storage medium that stores a schedule for execution by the processor, the schedule including instructions for implementing a method, as defined in any one of claims 1 to 23.
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