systems and methods for determining transmitter and receiver configurations for a wireless device

专利摘要:
systems and methods for determining the transmitter and receiver settings for a wireless device are provided. in an exemplary embodiment, a method performed by a wireless device (105, 200, 300a-b, 500, 605) in a wireless communication system (100) comprises transmitting or receiving (403) a first signal of a first type (113) using a first transmitter or receiver configuration based on a first quasi-colocalization assumption (qcl) (121) associating the first signal with a first reference signal (111) received by the wireless device. furthermore, the method includes transmitting or receiving (407) a second signal of a second type (117) using a second transmitter or receiver configuration based on a second assumption of qcl (123) associating the second signal with a second signal reference number (115) received by the wireless device.
公开号:BR112019019225A2
申请号:R112019019225
申请日:2018-03-23
公开日:2020-04-14
发明作者:Frenne Mattias；Grant Stephen
申请人:Ericsson Telefon Ab L M；
IPC主号:

专利说明:

SYSTEMS AND METHODS FOR DETERMINING TRANSMITTER AND RECEIVER CONFIGURATIONS FOR A WIRELESS DEVICE
FIELD OF THE INVENTION [001] The present invention generally relates to the field of communications, and in particular to the determination of transmitter and receiver configurations for a wireless device.
FUNDAMENTALS [002] In 5 ^ Generation mobile networks or wireless systems (5G) or New Radio 5G (NR), spatial near-colocalization (QCL) was introduced as a new concept. Two reference signals transmitted from a transmitter (eg, base station) are said to be spatially QCL at a receiver (eg, UE or terminal) if the spatial reception characteristics of the two received reference signals are equal or similar. Spatial characteristics can be one or more of the primary arrival angles, the angular dispersion of signal reception, spatial correlation, or any other parameter or definition that captures spatial characteristics. The two reference signals are sometimes referred to in the same way as being transmitted / received from / through two different antenna ports. If two gNB transmit antenna ports (eg, base station) are QCL spatially in the UE, the UE can use the same receiving beamforming (RX) weights to receive both the first and second signals of reference.
[003] The use of spatial QCL is of particular importance when the
UE uses analog beam formation, since the UE needs to know where to direct the analog beam before receiving the signal. Therefore, for NR 5G, it is possible to signal from the gNB to the UE that a given channel state information reference signal resource (CSI-RS) or antenna port of
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2/59
CSI-RS is QCL spatially with a downlink physical shared channel transmission (PDSCH) and the PDSCH demodulation reference signal transmission (DMRS). With this information, the UE can use the same analog beam for receiving PDSCH as used in receiving the previous CSI-RS feature or antenna port.
[004] The spatial QCL framework can also be extended to handle transmissions from the UE. In this case, the signal transmitted from the UE is QCL spatially with a previous reception of a signal received by the UE. If the UE makes this assumption for transmission, it means that the UE is transmitting a signal back on an analog transmission (TX) beam that is the same or similar to the RX beam previously used to receive a signal. Therefore, the first reference signal (RS) transmitted from the gNB is QCL spatially in the UE, with a second RS transmitted from the UE back to the gNB. This is useful if the gNB uses analog beamforming, since the gNB then knows which direction to expect a transmission from the UE and, therefore, can adjust its beam direction immediately before the actual reception.
[005] In NR 5G, a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH) and possibly a tertiary synchronization signal (TSS) will be used in a signal block synchronization (SS). The SS block is likely to encompass four orthogonal frequency division (OFDM) multiplexing symbols. Multiples of such SS blocks can be transmitted in different beams in different beamforming directions and therefore each SS block can benefit from the corresponding beam's antenna gain. The disadvantage is that multiple SS blocks require multiples of four OFDM symbols to be used to cover the entire gNB area with these bundles. Besides that,
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3/59 the narrower the beam, the better the beam coverage, but the greater the overhead from the SS transmission blocks. Therefore, there is a trade-off between coverage and overhead. In addition, the SS block beams are wider than the data beams, which can be very narrow to provide very high antenna gain in order to maximize the signal to noise interference (SINR) rate at the receiver.
[006] In addition, existing air interface solutions do not provide robust communications between a UE and a gNB when using narrow beam formation, as in millimeter wave frequencies. This is even more apparent with the formation of an analog beam that requires knowing where to direct a beam. Because the beams are very narrow (for example, up to a few degrees in beam width), failure to direct that narrow beam in the right direction can lead to loss of connection and interruption in data transfer rate. In addition, the UE may need to direct the beam in a robust manner when receiving synchronization signals and broadcast signals (for example, common search space physical downlink control channel (PDCCH)) or transmit physical random access channel (PRACH) or beam recovery signals while at the same time receiving and transmitting dedicated signals that require high gain or narrow beams (for example, PDSCH, physical uplink shared channel (PUSCH), and PDCCH of EU-specific research space ). In addition, the UE may need to define the UE beam direction without dedicated beam indication signaling from gNB to the UE. In an NR system, there is a need to transmit both narrow and wide width beams, where narrow beams can be used for the transmission of unicast messages while wide beams can be used for the transmission of multicast or broadcast messages.
[007] Therefore, improved techniques are needed to
Petition 870190092409, of 16/09/2019, p. 151/241 determine the transmitter and receiver settings for a wireless device. In addition, other desirable features and characteristics of the present invention will become apparent from the detailed description and subsequent modalities, taken in conjunction with the attached figures and the previous field and technical background.
[008] The Fundamentals section of this document is provided to place modalities of the present invention in the technological and operational context, to help those skilled in the art to understand its scope and usefulness. Unless explicitly identified as such, no statement contained herein is admitted as a prior art only by its inclusion in the Fundamentals section.
SUMMARY [009] The following is a simplified summary of the invention, in order to provide a basic understanding for those skilled in the art. This summary is not a comprehensive overview of the invention and is not intended to identify key / critical elements of the modalities of the invention or to outline the scope of the invention. The sole purpose of this summary is to present some concepts disclosed in a simplified form, as a prelude to the more detailed description that will be presented later.
[0010] Systems and methods for determining transmitter and receiver configurations for a wireless device are presented here. According to one aspect, a method performed by a wireless device in a wireless communications system comprises transmitting or receiving, by the wireless device, a first signal of a first type using a first transmitter or receiver configuration based on a first QCL assumption associating the first signal with a first reference signal received by the wireless device. In addition, the method includes transmitting or receiving, via the wireless device, a second signal of a second type using a
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5/59 second transmitter or receiver configuration based on a second QCL assumption associating the second signal to a second reference signal received by the wireless device.
[0011] According to another aspect, the first reference signal is a broadcast reference signal and the second reference signal is an EU-specific configured reference signal.
[0012] According to another aspect, the broadcast reference signal is a reference signal in an SS block and the UE specific reference signal is a CSI-RS.
[0013] According to another aspect, the first signal is a common signal and the second signal is a specific EU signal.
[0014] According to another aspect, the first and second signs are specific signs of UE.
[0015] According to another aspect, the first reference signal is a reference signal in a preferred SS block and the first signal is a common search space or a common group search space of a PDCCH.
[0016] According to another aspect, the second reference signal is a CSI-RS and the second signal is a DMRS for a specific EU research space of a PDCCH.
[0017] According to another aspect, the second reference signal is a CSI-RS and the second signal is a UE-specific search space of a PDCCH.
[0018] According to another aspect, the second reference signal is an RS in a preferred SS block and the second signal is a PRACH signal or a beam failure recovery signal.
[0019] According to another aspect, the first reference signal is a reference signal in a preferred SS block and the first signal is a UE-specific search space of a PDCCH.
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6/59 [0020] According to another aspect, the second reference signal is a CSI-RS and the second signal is a PUSCH signal.
[0021] According to another aspect, the second reference signal is a CSI-RS and the second signal is a PDSCH.
[0022] According to another aspect, the second reference signal is a CSI-RS and the second signal is a PUCCH signal.
[0023] According to another aspect, the first receiver configuration corresponds to a beam direction used to receive the first reference signal.
[0024] According to another aspect, the second transmitter or receiver configuration corresponds to a beam direction used to receive the second reference signal.
[0025] According to another aspect, the method includes determining the first transmitter or receiver configuration based on the first assumption of QCL.
[0026] According to another aspect, the step of determining the first transmitter or receiver configuration includes determining a transmitting pre-decoder or receiving beam-forming weights to enable transmission or reception of the first signal based on weights of formation of reception beam that enabled the reception of the first reference signal.
[0027] According to another aspect, the method includes determining the second transmitter or receiver configuration based on the second assumption of QCL.
[0028] According to another aspect, the step of determining the second transmitter or receiver configuration includes determining a transmission pre-decoder or receiving beam-forming weights to enable transmission or reception of the second signal based on weights of formation of
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7/59 reception beam that enabled the reception of the second reference signal.
[0029] According to another aspect, the QCL assumption is a spatial QCL assumption.
[0030] According to another aspect, the method includes receiving, by the wireless device, from a network node, an indication of the first or second assumption of QCL.
[0031] According to another aspect, the step of receiving the indication is by at least one of radio resources control signaling (RRC), signaling of element of access control to the medium (MAC-CE), and signaling of downlink control (DCI) information.
[0032] According to another aspect, the first or second assumption of QCL is a spatial relationship between reception of a reference signal by a wireless device and a transmission of a signal of a certain type by that wireless device or a reference between a reference signal reception by a wireless device and a signal reception of a certain type by that wireless device.
[0033] According to another aspect, the method includes receiving, by the wireless device, the first and the second reference signals.
[0034] According to another aspect, the wireless device is a UE.
[0035] According to one aspect, a wireless device is configured to transmit or receive a first signal of a first type using a first transmitter or receiver configuration based on a first assumption of QCL associating the first signal to a first signal reference received by the wireless device. In addition, the wireless device is configured to transmit or receive a second signal of a second type using a second transmitter or receiver configuration based on a second QCL assumption associating the second signal with a second reference signal
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8/59 received by the wireless device.
[0036] According to one aspect, a wireless device comprises at least one processor and a memory. In addition, the memory comprises instructions executable by at least one processor, whereby the wireless device is configured to transmit or receive a first signal of a first type using a first transmitter or receiver configuration based on a first assumption of associating QCL the first signal to a first reference signal received by the wireless device. In addition, the wireless device is configured to transmit or receive a second signal of a second type using a second transmitter or receiver configuration based on a second QCL assumption associating the second signal with a second reference signal received by the device without thread.
[0037] In one aspect, a wireless device comprises a transmit / receive module for transmitting or receiving a first signal of a first type using a first transmitter or receiver configuration based on a first assumption of QCL associating the first signal to a first reference signal received by the wireless device. In addition, the transmit / receive module is configured to transmit or receive a second signal of a second type using a second transmitter or receiver configuration based on a second QCL assumption associating the second signal with a second reference signal received by the wireless device.
[0038] According to one aspect, a method performed by a wireless device in a wireless communications system comprises obtaining one of a plurality of QCL assumptions, with each assumption associating a certain reference signal reception by a device without with a transmission or reception of a signal of a certain type by that device without
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9/59 thread. In addition, the method includes transmitting or receiving a signal of a certain type using a transmitter or receiver configuration based on the assumption of QCL received that associates that signal with a reference signal received by the wireless device.
[0039] According to another aspect, the obtaining step includes receiving, from a network node, an indication of one of the plurality of QCL assumptions.
[0040] According to another aspect, the indication includes a subset of QCL parameters. In one example, a set of QCL parameters includes average gain, average delay, delay dispersion, Doppler dispersion, Doppler shift and spatial parameter.
[0041] According to one aspect, a wireless device is configured to obtain one of a plurality of QCL assumptions, with each assumption associating a certain reference signal reception by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, the wireless device is configured to transmit or receive a signal of a certain type using a transmitter or receiver configuration based on the assumption of received QCL that associates that signal with a reference signal received by the wireless device.
[0042] According to one aspect, a wireless device comprises at least one processor and a memory. In addition, the memory comprises instructions executable by at least one processor whereby the wireless device is configured to obtain one of a plurality of QCL assumptions, with each assumption associating a certain reference signal reception by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, the wireless device is configured to transmit or receive a signal of a certain type
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10/59 using a transmitter or receiver configuration based on the assumption of QCL received that associates that signal to a reference signal received by the wireless device.
[0043] According to one aspect, a wireless device comprises a QCL assumption module to obtain one of a plurality of QCL assumptions. In addition, each assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, the wireless device includes a transmit / receive module for transmitting or receiving a signal of a certain type using a transmitter or receiver configuration based on the assumption of received QCL that associates that signal with a reference signal broadcast to the device wireless.
[0044] According to one aspect, a computer program, comprising instructions that, when executed on at least one processor of a wireless device, cause at least one processor to execute any of the methods described here. In addition, a carrier contains the computer program with the carrier being one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.
[0045] According to one aspect, a method performed by a network node in a wireless communications system comprises obtaining one of a plurality of QCL assumptions for a wireless device. In addition, each assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. The method includes transmitting an indication of the obtained QCL assumption to the wireless device.
[0046] According to another aspect, the obtaining step includes
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11/59 determine one of the plurality of QCL assumptions for the wireless device.
[0047] According to another aspect, the method includes transmitting or receiving, to or from the wireless device, a signal of a certain type based on the assumption of QCL obtained that associates that signal to a reference signal transmitted by the node connection to the wireless device.
[0048] According to another aspect, the plurality of QCL assumptions includes at least one of a spatial relationship between a reference signal reception by a wireless device and a transmission of a signal of a certain type by that wireless device and a QCL reference between receiving a reference signal by a wireless device and receiving a signal of a certain type by that wireless device.
[0049] According to one aspect, a network node is configured to obtain one of a plurality of quasi-colocalization assumptions (QCL) for a wireless device, with each assumption associating a certain reference signal reception by a device without with a transmission or reception of a signal of a certain type by that wireless device. In addition, the network node is configured to transmit an indication of the obtained QCL assumption to the wireless device.
[0050] According to one aspect, a network node comprises at least one processor and a memory. In addition, the memory comprises instructions executable by at least one processor, whereby the network node is configured to obtain one of a plurality of QCL assumptions for a wireless device. In addition, each assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, the network node is configured to transmit to the wireless device an indication of the
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12/59 assumption of QCL obtained.
[0051] According to one aspect, a network node comprises a QCL assumption module for obtaining one of a plurality of QCL assumptions for a wireless device. Each assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, the network node includes a transmission module to transmit to the wireless device an indication of the obtained QCL assumption.
[0052] According to one aspect, a computer program comprises instructions that, when executed on at least one processor of a network node, cause at least one processor to execute any of the methods described here. In addition, a carrier may contain the computer program, the carrier being one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.
BRIEF DESCRIPTION OF THE DRAWINGS [0053] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. However, this invention should not be interpreted as limited to the modalities set out in this document. Instead, these modalities are provided for this invention to be thorough and complete and to fully convey the scope of the invention to those skilled in the art. Similar numbers refer to similar elements in general.
[0054] Figure 1 illustrates a modality of a system for determining transmitter and receiver configurations for a wireless device according to several aspects, as described here.
[0055] Figure 2 illustrates a modality of a wireless device for
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13/59 according to several aspects, as described here.
[0056] Figures 3A-B illustrate other modalities of a wireless device according to several aspects, as described here.
[0057] Figure 4 illustrates a modality of a method for determining transmitter and receiver configurations for a wireless device in a wireless communications system according to several aspects, as described here.
[0058] Figure 5 illustrates another modality of a wireless device, according to several aspects, as described here.
[0059] Figure 6 illustrates another modality of a method for determining transmitter and receiver configurations for a wireless device in a wireless communications system according to several aspects, as described here.
[0060] Figure 7 illustrates another modality of a method for determining transmitter and receiver configurations for a wireless device in a wireless communications system according to several aspects, as described here.
[0061] Figure 8 illustrates a modality of a network node 800 as implemented according to several modalities, as described here.
[0062] Figure 9 illustrates a schematic block diagram of a modality of a network node in a wireless network according to several modalities, as described here.
[0063] Figure 10 illustrates a modality of a method performed by a network node to select a cell to transmit control information according to several modalities, as described here.
DETAILED DESCRIPTION [0064] For simplicity and illustrative purposes, the present invention is described
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14/59 referring mainly to an exemplary modality of the same. In the description that follows, several specific details are established in order to provide a complete understanding of the present invention. However, it will be readily apparent to one skilled in the art that the present invention can be practiced without limitation to these specific details. In this description, known methods and structures have not been described in detail to avoid unnecessarily obscuring the present invention.
[0065] This invention includes the description of systems and methods for determining transmitter and receiver configurations for a wireless device. For example, Figure 1 illustrates an embodiment of a system 100 for determining transmitter and receiver configurations for a wireless device according to several aspects, as described here. In Figure 1, system 100 can include a network node 101 (for example, a base station, such as a gNB) and a wireless device 105 (for example, UE). Network node 101 can include one or more antenna ports 103 (for example, antenna array, transmit / receive points (TRP) or the like) that can transmit a first reference signal 111 (for example, a reference signal widespread, as an SS block). The wireless device 105 can receive the first reference signal 111 using a certain receiver configuration (e.g., receiving beamforming weights, reception spatial filtering weights, or the like). In addition, network node 101 can transmit or receive a first signal of a first type 113 (for example, a common signal, such as a common search space or a common group search space from a PDCCH). The wireless device 105 (for example, UE) can transmit or receive the first signal of the first type 113 using a first transmitter configuration (for example, transmission beamforming weights) or a first receiver configuration (for example, beam-forming weights
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15/59 reception) which is based on a first assumption of QCL 121 associating the first signal 113 with the first reference signal 111 received by the wireless device 105. The transmission beam weights can also be referred to as a pre- transmission decoder, transmission spatial filter weights or the like. In addition, reception beam-forming weights can also be referred to as spatial reception filter weights.
[0066] In addition, wireless device 105 can determine the first receiver configuration based on the first assumption of QCL 121. QCL can also be referred to as spatial QCL, reciprocal QCL or the like. In addition, the QCL can be associated with a transmission or reception of a signal that is in the same beam direction as a transmission or reception of another signal. For example, a QCL assumption can be a spatial relationship between a reception of a reference signal (for example, SS block, CSI-RS or the like) by a wireless device and a transmission of a signal of a certain type ( for example, PDSCH, PDCCH, PUCCH, common or EU specific PUSCH, or the like) by that wireless device. In another example, a QCL assumption may be a QCL reference between a reference device receiving a wireless signal and receiving a signal of a certain type through that wireless device. In one example, a first reference signal is an SS block and the first signal is an EU-specific PDCCH with the second reference signal being a CSI-RS and the second signal being a PUCCH. In another example, a first reference signal is an SS block and the first signal is an EU-specific PDCCH, with the second reference signal being a CSI-RS and the second signal being a PUSCH. The first receiver configuration can correspond to the same beam direction used to receive the first reference signal 111. Wireless device 105 can determine the
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16/59 first receiver configuration to allow reception of the first signal 113 in the same beam direction used to receive the first reference signal
111. For example, wireless device 105 can determine reception beam weights to allow reception of the first signal 113 based on reception beam forming weights that enabled reception of the first reference signal 111.
[0067] In this embodiment, the network node 101 can transmit a second reference signal 115 (for example, a configured UE-specific reference signal). A UE-specific configured reference signal can be a CSI-RS, an RS in a preferred SS block or the like. The wireless device 105 can receive the second reference signal 115 using a certain receiver configuration (e.g., receiver beamforming weights). In addition, network node 101 can transmit a second signal of a second type 117 (e.g., a specific UE signal). A specific UE signal can be a DMRS for a PDCCH specific EU search space, a PDCCH specific EU search space, a PRACH signal or a beam failure recovery signal, a PUSCH signal , a PDSCH, or the like. The wireless device 105 (for example, UE) can receive the second signal of the second type 117 using a second receiver configuration (for example, receiver beamforming weights) which is based on a second assumption of QCL 123 associating the second signal 117 to second reference signal 115 received by wireless device 105. Wireless device 105 can determine the second receiver configuration based on the second assumption of QCL 123. The second receiver configuration can correspond to the same beam direction used to receive the second reference signal 115. Wireless device 105 can determine the second receiver configuration to allow reception of the second signal 117 on the
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17/59 same beam direction used to receive the second reference signal 115. For example, the wireless device 105 can determine reception beamform weights to allow reception of the second signal 117 based on beamform weights that enabled the reception of the second reference signal 115.
[0068] In another embodiment, network node 101 can obtain or determine one of a plurality of assumptions of QCL 121, 123 for wireless device 105. Each assumption of QCL 121, 123 associates with a certain reception of reference signal 111 , 115 by the wireless device 105 with the transmission or reception of the signal of the certain type 113, 117 by that wireless device 105. In addition, the network node 101 transmits, to the wireless device 105, an indication of the QCL assumption 121, 123 determined. Wireless device 105 receives this indication and then transmits or receives the signal of a certain type 113, 117, using the transmitter or receiver configuration based on the received QCL assumption 121,123 that associates that signal 113,117 with the reference signal 111, 115 received by wireless device 105.
[0069] Additionally or alternatively, network node 101 can be configured to support a wireless communications system (for example, NR, LTE, LTE-NR, UMTS, GSM or the like). In addition, network node 101 can be a base station (e.g., eNB, gNB), an access point, a wireless router or the like. Network node 101 can serve wireless devices, such as wireless device 105. Wireless device 105 can be configured to support a wireless communications system (for example, NR, LTE, LTE-NR, UMTS, GSM, or similar). The wireless device 105 can be a UE, a mobile station (MS), a terminal, a cell phone, a cell phone, a personal digital assistant (PDA), a smartphone, a cordless phone, an organizer, a laptop computer , a computer
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18/59 table, laptop, tablet, decoder, a television, a device, a gaming device, a medical device, a display device, a measuring device or the like.
[0070] Figure 2 illustrates an embodiment of a wireless device 200 according to various aspects, as described here. In Figure 2, wireless device 200 may include a receiver circuit 201, a receiver configuration determination circuit 203, a transmitter circuit 205, a transmitter configuration determination circuit 207, a QCL assumption acquisition circuit 209, similar or any combination thereof. The receiver configuration determination circuit 203 can be configured to determine a first receiver configuration based on a first QCL assumption by associating a first signal of a first type with a first reference signal received by the wireless device. Receiver circuit 201 can be configured to receive the first signal of the first type using the first receiver configuration based on the first QCL assumption. The receiver configuration determination circuit 203 can also be configured to determine a second receiver configuration based on a second QCL assumption by associating a second signal of a second type with a second reference signal received by the wireless device 200. The receiver circuit 20 1 can also be configured to receive the second signal of the second type using the second receiver configuration based on the second QCL assumption. In addition, transmitter configuration determination circuit 207 can be configured to determine a second transmitter configuration based on the second QCL assumption. Transmitter circuit 205 can be configured to transmit the first signal of the first type using the first transmitter configuration based on the first QCL assumption. The 205 transmitter circuit can also be
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19/59 configured to transmit the second signal of the second type using the second transmitter configuration based on the second QCL assumption. The QCL guess assumption circuit 209 can be configured to obtain one of a plurality of QCL assumptions. The receiving circuit 201 can also be configured to receive an indication of one of the plurality of QCL assumptions.
[0071] Figures 3A-B illustrate other modalities of a wireless device 300 a - b, according to various aspects, as described here. In Figure 3A, the wireless device 300a (e.g. UE) can include processing circuit (s) 301a, radio frequency (RF) communications circuit (s) 305a, antenna (s) 307a, the like or any combination of the same. The communication circuit (s) 305a can be configured to transmit or receive information to or from one or more network nodes using any communication technology. This communication can occur using one or more antennas 307a that are internal or external to the wireless device 300a. The processing circuit (s) 301a can be configured to perform processing as described here (for example, the methods of Figures 4, 6, and 7), such as by executing program instructions stored in memory 303a. The processing circuit (s) 301a in this regard can implement certain functional means, units, or modules.
[0072] In Figure 3B, wireless device 300b can implement various functional means, units or modules (for example, through processing circuit (s) 301a in Figure 3A or via software code). These functional means, units or modules (for example, to implement the methods of Figures 4, 6, and 7) may include a transmission / reception unit or module 311b for transmitting / receiving a signal of a certain type using a configuration of transmitter / receiver based on a
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20/59 first assumption of QCL associating the signal to a reference signal received by the wireless device. In addition, these functional means, units or modules may include a receiver configuration determination unit or module 313b for determining a receiver configuration based on an assumption of QCL. In addition, these functional means, units or modules may include a transmitter configuration determination unit or module 315b for determining a transmitter configuration based on an assumption of QCL. Finally, these means, units or functional modules may include a QCL assumption-taking module 317b to obtain one of a plurality of QCL assumptions.
[0073] Figure 4 illustrates an embodiment of a method 400 for determining transmitter and receiver configurations for a wireless device in a wireless communications system according to several aspects, as described here. The wireless device that performs this method 400 can match any of the wireless devices 105, 200, 300a, 300b, 500, 605 described herein. In Figure 4, method 400 can start, for example, at block 401, where it can include receiving, from a network node, an indication of a first or second QCL assumption. In addition, method 400 may include receiving first and second reference signals, as referenced by block 403. In block 405, method 400 may include determining a first receiver configuration based on a first QCL assumption by associating a first a first type to the first reference signal received by the wireless device. In block 407, method 400 includes transmitting or receiving the first signal of the first type using the first transmitter or receiver configuration based on the first QCL assumption. In block 409, method 400 may include determining a second configuration of
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21/59 transmitter or receiver based on a second QCL assumption associating a second signal of a second type to the second reference signal received by the wireless device. In block 411, method 400 includes transmitting or receiving the second signal of the second type using the second transmitter or receiver configuration based on the second QCL assumption.
[0074] Figure 5 illustrates another modality of a wireless device, according to several aspects, as described here. In some cases, the wireless device 500 can be referred to as a UE, an MS, a terminal, a cell phone, a cell phone, a PDA, a smartphone, a cordless phone, an organizer, a laptop, a computer table, laptop, tablet, set-top box, television, handset, gaming device, medical device, display device, measuring device or other similar terminology. In other cases, the wireless device 500 may be a set of hardware components. In Figure 5, the wireless device 500 can be configured to include a processor 501 that is operationally coupled to an input / output interface 505, a radio frequency (RF) interface 509, a network connection interface 511, a memory 515 including a random access memory (RAM) 517, a read-only memory (ROM) 519, a storage medium 531 or similar, a communication subsystem 551, a power source 533, another component or any combination thereof . The storage medium 531 can include an operating system 533, an application program 535, data 537 or the like. Specific devices can use all of the components shown in Figure 5, or only a subset of the components, and levels of integration can vary from device to device. In addition, specific devices may contain multiple instances of a component, such as multiple processors, memories, transceivers,
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22/59 transmitters, receivers, etc. For example, a computing device can be configured to include a processor and memory.
[0075] In Figure 5, processor 501 can be configured to process instructions and data from the computer. The 501 processor can be configured as any sequential operative state machine to execute machine instructions stored as machine-readable computer programs in memory, as one or more state machines implemented by hardware (for example, in discrete logic, FPGA, ASIC , etc.); programmable logic along with the appropriate firmware; one or more general purpose stored program processors, such as a microprocessor or Digital Signal Processor (DSP), along with appropriate software; or any combination of the above. For example, processor 501 can include two computer processors. In a definition, data is information in a format suitable for use by a computer. It is important to note that a person skilled in the art will recognize that the subject of this invention can be implemented using various operating systems or combinations of operating systems.
[0076] In the current mode, the 505 input / output interface can be configured to provide a communication interface for an input device, output device or input and output device. The wireless device 500 can be configured to use an output device via the input / output interface 505. A person skilled in the art will recognize that an output device can use the same type of interface port as an input device. For example, a USB port can be used to provide input and output from the wireless device 500. The output device can be a speaker, a sound card, a video card, a screen, a monitor, a printer, an actuator, an issuer, a smart card, another
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23/59 output device or any combination thereof. The wireless device 500 can be configured to use an input device via the input / output interface 505 to allow a user to capture information on the wireless device 500. The input device can include a mouse, a click wheel, a directional keypad, a click pad, a presence sensitive input device, a screen like a presence sensitive screen, a scroll wheel, a digital camera, a digital video camera, a web camera, a microphone, a sensor, a smart card and the like. The presence-sensitive input device can include a digital camera, digital video camera, web camera, microphone, sensor, or the like to detect user input. The presence sensitive input device can be combined with the screen to form a presence sensitive screen. In addition, the presence-sensitive input device can be coupled to the processor. The sensor can be, for example, an accelerometer, a gyroscope, a tilt sensor, a force sensor, a magnetometer, an optical sensor, a proximity sensor, another similar sensor or any combination thereof. For example, the input device can be an accelerometer, a magnetometer, a digital camera, a microphone and an optical sensor.
[0077] In Figure 5, the RF 509 interface can be configured to provide a communication interface for RF components, such as a transmitter, a receiver and an antenna. The network connection interface 511 can be configured to provide a communication interface for a network 543 a. The 543a network can encompass wired and wireless communication networks, such as a local area network (LAN), a wide area network (WAN), a computer network, a wireless network, a telecommunications network, another similar network or any combination thereof. For example, network 543a
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24/59 can be a Wi-Fi network. The 511 network connection interface can be configured to include a receiver and a transmitter interface used to communicate with one or more other nodes through a communication network in accordance with a or more communication protocols known in the art or that can be developed, such as Ethernet, TCP / IP, SONET, ATM or similar. The 511 network connection interface can implement the appropriate receiver and transmitter functionality for communication network links (for example, optical, electrical and the like). The transmitter and receiver functions can share circuit, software or firmware components or, alternatively, can be implemented separately.
[0078] In this modality, RAM 517 can be configured to interface through bus 503 to processor 501 to provide storage or caching of data or computer instructions during the execution of software programs, such as the operating system, programs application, and device drivers. In one example, the wireless device 500 can include at least one hundred and twenty-eight megabytes (128 Mbytes) of RAM. ROM 519 can be configured to provide instructions or computer data to the 501 processor. For example, ROM 519 can be configured to be invariant low-level code or system data for basic system functions, such as basic input and output ( I / O), initialization, or reception of keystrokes on a keyboard that are stored in non-volatile memory. Storage media 531 can be configured to include memory such as RAM, ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic disks, disks optical, floppy, hard drives, removable cartridges, flash drives. On a
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For example, storage medium 531 can be configured to include an operating system 533, an application program 535, such as a web browser application, a widget or gadget mechanism or other application, and a 537 data file.
[0079] In Figure 5, processor 501 can be configured to communicate with a network 543b using communication subsystem 551. Network 543a and network 543b can be the same network or networks, or different network or networks. The communication subsystem 551 can be configured to include one or more transceivers used to communicate with the 543b network. One or more transceivers can be used to communicate with one or more remote transceivers from another wireless device, such as a base station on a radio access network (RAN), according to one or more communication protocols known in the art or that can be developed, such as IEEE 802.XX, CDMA, WCDMA, GSM, LTE, NR, NB loT, UTRAN, WiMax or similar.
[0080] In another example, the communication subsystem 551 can be configured to include one or more transceivers used to communicate with one or more remote transceivers from another wireless device, such as user equipment, according to one or more communication protocols communication known in the art or that can be developed, such as IEEE 802.xx, CDMA, WCDMA, GSM, LTE, NR, NB loT, UTRAN, WiMax or similar. Each transceiver can include a transmitter 553 or a receiver 555 to implement the transmitter or receiver functionality, respectively, appropriate for RAN links (for example, frequency allocations and the like). In addition, transmitter 553 and receiver 555 for each transceiver can share circuit, software or firmware components or, alternatively, can be implemented separately.
[0081] In the current modality, the communication functions of the
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26/59 communication 551 may include data communication, voice communication, multimedia communication, short-range communications such as Bluetooth, near-field communication, location-based communication, such as using the global positioning system (GPS) to determine a other similar communication function or any combination thereof. For example, the 551 communication subsystem can include cellular communication, Wi-Fi communication, Bluetooth communication and GPS communication. The 543b network can encompass wired and wireless communication networks, such as a local area network (LAN), a wide area network (WAN), a computer network, a wireless network, a telecommunications network, another similar network or any combination of these. For example, network 543b can be a cellular network, a Wi-Fi network and a near field network. Power source 513 can be configured to provide alternating current (AC) or direct current (DC) power to wireless device components 500.
[0082] In Figure 5, storage medium 531 can be configured to include a number of physical drives, such as a redundant array of independent disks (RAID), a floppy drive, a flash memory, a USB flash drive, a drive external hard drive, thumb drive, thumb drive, key drive, a high-density digital versatile disc (HD-DVD) optical disc drive, an internal hard drive, a Blu-Ray optical disc drive, a drive holographic optical disk drive, a synchronous dynamic random access memory (SDRAM), mini-dual in-line memory module (DIMM), an external micro-DIMM SDRAM, a smart card memory as a subscriber identity module or a module removable user identity (YES / BAD), other memory or any combination thereof. The storage medium 531 may allow the wireless device 500 to access executable instructions by computer, application programs or
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27/59 similar, stored in transient or non-transient memory medium, download data or load data. An article of manufacture, such as one using a communication system, can be tangibly incorporated into the storage medium 531, which can comprise a computer-readable medium.
[0083] The functionality of the methods described in this document can be implemented in one of the components of the wireless device 500 or partitioned into several components of the wireless device 500. In addition, the functionality of the methods described here can be implemented in any combination of hardware , software or firmware. In one example, the communication subsystem 551 can be configured to include any of the components described here. In addition, processor 501 can be configured to communicate with any of these components via the 503 bus. In another example, any of these components can be represented by program instructions stored in memory that, when executed by processor 501, execute the instructions. corresponding functions described here. In another example, the functionality of any of these components can be partitioned between the 501 processor and the 551 communication subsystem. In another example, the non-computational functions of any of these components can be implemented in software or firmware and the functions computationally intensive can be implemented in hardware.
[0084] Those skilled in the art will also appreciate that the modalities included here also include corresponding computer programs.
[0085] A computer program comprises instructions that, when executed in at least one processor of a device, cause the device to execute any of the respective processes described above. a
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The computer program in this regard may comprise one or more code modules corresponding to the means or units described above.
[0086] Modalities also include a carrier containing such a computer program. This carrier may comprise one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.
[0087] In this regard, the modalities here also include a computer program product stored in a non-transient computer-readable medium (storage or recording) and comprising instructions that, when executed by a device processor, cause the device works as described above.
[0088] Modalities further include a computer program product comprising portions of program code to perform the steps of any of the modalities of this document when the computer program product is executed by a computing device. This computer program product can be stored on a computer-readable recording medium.
[0089] Additional modalities will now be described. At least some of these modalities can be described as applicable in certain contexts and / or types of wireless networks for illustrative purposes, but the modalities are equally applicable in other contexts and / or types of wireless networks not explicitly described.
[0090] In one embodiment, the UE identifies several types of RSs transmitted by downlink and associates each transmitted data signal (ie from gNB or UE) to be QCL spatially in the UE (ie the UE must use a certain X-ray beam) depending on the types of associated RS. As an example, the broadcast sync signal (SS block) and the CSI-RS
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29/59 specifically configured by the UE are two types of RS. Upon receiving the common search space PDCCH, the UE can assume the same analog RX beam as when it received the preferred SS block. Upon receiving the PDCCH of UE-specific research space, the UE can assume the same analog RX beam as when it received a certain configured CSI-RS.
[0091] In one embodiment, the UE may use that the transmitted or received signal to be spatially QCL (for example, used to determine receiving beam direction) with different types of reference signals transmitted from the gNB, depending on the type (for example, common control, EU specific control, dedicated data) of the transmitted signal. The QCL assumptions for receiving control channels can include the following:
• to receive PDCCH from common search space, the UE can assume that the PDCCH DMRS is QCL spatially on the receiver side (UE) with an RS belonging to a preferred and detected SS block; and • to receive the PDCCH of UE-specific research space, the UE can assume that the PDCCH DMRS is QCL spatially on the receiver (UE) side with a configured CSI-RS.
[0092] QCL assumptions for the transmission of control channels can include:
• to transmit beam failure recovery or PRACH signals, the UE must transmit in such a way that the transmitted signal is QCL spatially on the UE side with an RS belonging to a preferred and detected SS block [0093] The QCL assumptions for transmission and reception of data channels may include:
• to transmit PUSCH or receive PDSCH, the UE must transmit or receive so that the signal is QCL spatially on the UE side with a configured CSI-RS
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30/59 [0094] An advantage of this solution is that the UE always knows how to direct its beam when receiving and transmitting. This avoids the need for beam scanning (that is, searching for the signal to probe in different directions), which is costly and increases latency. Thus, this solution reduces the latency and overhead of an NR network.
[0095] The gNB or transmission / reception points (TRPs) connected to a gNB transmit one or multiple SS blocks in a diffusion manner. In the case of multiple SS blocks, each SS block can cover only part of the gNB coverage area. The UE detects one of the SS blocks (for example, in a gNB transmission beam) using a receiver configuration and responds with a random access channel transmission (for example, PRACH) using a transmitter configuration that is similar to receiver configuration. These configurations can be seen as beams, created by an analog beamforming network in the UE. Thus, the UE receives an SS block using an analog RX beam and then transmits the PRACH on the same beam (TX beam). One way to describe this behavior is the state in which the selected or preferred SS block is spatially QCL in the UE with the PRACH transmission.
[0096] Spatial QCL can be defined as having the same or essentially a similar arrival / departure direction or having the same or essentially the same spatial covariance coefficients.
[0097] SS blocks typically have a wide to medium beam width, so that the gNB coverage area can be covered with some of these SS block transmissions, to avoid excessive overload. Thus, each SS block / beam normally covers several UEs, while for specific UE and dedicated beams, one can configure CSI-RS. These CSI-RSs can be transmitted in very narrow beams, targeting a single UE, have high gain
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31/59 and are used to transmit a very high data rate to (or receive from) the UE.
[0098] A smaller beam width implies greater robustness, but less antenna gain compared to a narrow beam width.
[0099] For data transmitted or control from gNB (for example, PDSCH or PDCCH, respectively), it is beneficial for the UE to know the assumption of spatial QCL in relation to a previously transmitted signal or channel, so that it can adjust your receiver configuration, like analog RX beam.
[00100] Similarly, for data transmitted or control from the UE (eg PUSCH, PRACH, PUCCH or beam failure recovery signal), it is beneficial for gNB if it knows the assumption of spatial QCL in relation to to a previously transmitted signal or channel from the gNB so that it can adjust its receiver configuration, such as analog RX beam.
[00101] It is observed that some control channels transmitted are of a diffusion nature and some of a dedicated nature, for a given UE. In addition, the broadcast signals are more robust and may require less gain from the antenna. Broadcast signals also target multiple UEs, so narrow beams should be avoided.
[00102] In one embodiment, a UE uses each second signal transmitted or received in the UE to be QCL (mainly spatially, for example, used to determine the receiving or transmitting beam direction) with one of at least two different types of a first signal transmitted from the gNB.
[00103] The first type of signal can be PSS or SSS. PBCH, TSS, or a combination of these in a signal synchronization signal block (block
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32/59 of SS) [00104] The second type of signal can be a PDCCH (and its associated DMRS) (or in the common group, common or EU-specific search space, respectively) or PDSCH (and its associated DMRS) downlink and PUSCH (and its associated DMRS), PUCCH (and its associated DMRS) (short PUCCH or long PUCCH, respectively), PRACH or beam recovery signal on the uplink.
[00105] The UE uses the association of QCL with the first signal to adjust the receiver configuration, such as analog beam formation, or transmitter configuration also in the form of analog beam formation to receive or transmit the second signal.
[00106] In one mode, the UE composes the association of QCL following the specified rules, depending on the types of first and second signals; therefore, without explicit signaling which signal of a first type is associated with a signal of a second type.
[00107] In another modality, the UE uses the standard QCL association following specified rules, depending on the types of first and second signals; therefore, without explicit signaling which signal of a first type is associated with a signal of a second type until the UE has been explicitly configured as a dedicated signal of the first type to use as a QCL association for a given signal of the second type.
[00108] Here are some more detailed modalities:
[00109] To receive the common search space or the PDCCH of the group common search space transmitted from gNB or TRP as the second signal type, the UE can assume that the PDCCH DMRS is QCL spatially on the receiver side ( EU) with a first type of signal, such as a
RS belonging to a preferred and detected SS block. It is assumed that the UE
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33/59 detected an SS block, possible between multiple SS blocks transmitted from the gNB that can be transmitted from different TRPs and / or different beam directions from a TRP. This is indicated as the preferred SS block. The network transmits this PDCCH on the same or a similar beam when transmitting the SS 2 block, so that the UE can use the same RX beam to receive the common search space PDCCH as used to receive the SS 2 block .
[00110] To receive the PDCCH of UE-specific search space transmitted from gNB or TRP as a second type of signal, the UE can assume that the PDCCH DMRS as a first type if the signal is QCL spatially on the receiver side (UE) with a configured CSI-RS. It is assumed that the UE is configured or triggered to measure on a CSI-RS resource and that the CSI-RS resource is then used as a first type of signal. The network transmits the PDCCH on the same or similar beam as that previously transmitted the CSI-RS, so that the UE can use the same RX beam to receive the PDCCH when it received the CSI-RS.
[00111] In an additional embodiment, the UE uses a QCL association rule such that, to receive the PDCCH of UE-specific search space transmitted from gNB or TRP as a second type of signal, the UE can assume spatial QCL with a signal synchronization block as a first signal type and then, after the network (re-) configures the UE to measure and report the signal quality based on a CSI-RS feature, the UE can assume spatial QCL with CSI-RS configured as a different first signal type.
[00112] In the above modality, the UE can assume the first initial signal type as standard, without explicit configuration after the initial access and until additional warning, that is, until it is configured otherwise.
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34/59 [00113] To transmit beam failure recovery or PRACH signals as a second type of signal from the UE to the gNB, the UE must transmit so that the transmitted signal is QCL spatially on the UE side with an RS belonging to a preferred and detected SS block similar to the embodiment described above. The UE thus transmits on the same beam used to receive the SS block and the network can then use the same beam to receive the PRACH used to receive the SS block. Alternatively, the SS block to be used for the assumption of spatial QCL for PRACH or beam failure recovery signal can be explicitly signaled to the UE from the gNB in a configuration message.
[00114] To transmit PUSCH or receive PDSCH as a second type of signal, the UE must transmit or receive so that the signal is QCL spatially on the UE side with a CSI-RS configured as a first type of signal, where CSI- RS is similar to that described in the above modality.
[00115] Figure 6 illustrates another modality of a method 600 for determining transmitter and receiver configurations for a wireless device in a wireless communications system according to several aspects, as described here. In Figure 6, a network node 601 (for example, gNB, TRP or the like) transmits two blocks of SS 631, 633 and a wireless device 605 (for example, UE) detects the block of SS 2 633 as the preferred block (can detect both, but prefers the SS 2 block, as it has more power received), as represented by block 611.
[00116] In Figure 6, the UE 605 then transmits PRACH on the
PRACH 2 635, which is linked to the SS 2 block (similarly, the
SS 1 has a different PRACH 1 feature to be used in case the UE prefers the SS 1 block). Upon receiving PRACH on resource 2 635, network node 601 knows that the preferred SS block is block 2 633 for the UE. The UE 605 stores
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35/59 the analog beam used to receive SS 2 633 block as spatial QCL information SS-QCL2.
[00117] Network node 601 then transmits PDCCH of common search space 6 37 to UE 605 using the same or similar beam as used to transmit SS block 2 633 and UE 605 uses information from SSQCL2 to receive the Common Search Space PDCCH 637.
[00118] The common search space PDCCH 637 can scale a PDSCH (not shown in the figure) that contains configuration information for the UE specific search space PDCCH 641 and for CSIRS 639 resources to be used for measurements of beam management or CSI. The UE 605 can send feedback for these measurements using PUCCH or PUSCH (not shown in the figure) and, in this case, it will use the assumption of SS-QCL2 for PUCCH or PUSCH transmissions. Therefore, network node 601 knows which RX beam to expect uplink transmission from UE 605. Likewise, the PDSCH 643 that carries the configuration information mentioned above can also be transmitted under the assumption of SS -QCL2, so that the UE can configure the RX beam for use in reception.
[00119] After the network node 601 has configured the UE 605 with a CSIRS to be used for the PDCCH, PUSCH, and PDSCH of UE-specific search space, the CSI-RS 639 will be used as a spatial QCL reference for the signals instead of the SS-QCL2. Therefore, when receiving these signals, the UE 605 will use the same or similar RX beam as that used to receive the CSI-RS 639. In addition, when transmitting PUSCH 645, the UE 605 will use the TX beam associated with the CSI-RS 639 .
[00120] At this stage, the UE 605 will use two spatial QCL assumptions, depending on which signal it receives or transmits. These assumptions of
QCL are SS-QCL2 and CSI-RS, respectively. The UE will alternate between using these two different spatial QCL assumptions, depending on the type of signal being
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36/59 receive or transmit.
[00121] Figure 7 illustrates another modality of a method 700 for determining transmitter and receiver configurations for a wireless device (eg UE) in a wireless communications system (eg NR 5G) according to several aspects , as described here. In Figure 7, method 700 can start, for example, at block 701, where it can include receiving, from a network node (e.g., gNB), an indication of one of a plurality of QCL assumptions. In addition, each QCL assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In block 703, method 700 includes obtaining one of the plurality of QCL assumptions. In addition, method 700 includes transmitting or receiving a signal of a certain type using a transmitter or receiver configuration based on the assumption of received QCL that associates that signal to a reference signal received by the wireless device, as represented by block 705 .
[00122] Figure 8 illustrates a network node 800 as implemented according to various modalities, as described here. As shown, the network node 800 includes processing circuitry 810 and communication circuitry 820. Communication circuitry 820 is configured to transmit and / or receive information to and / or from one or more other nodes, for example, through any communication technology. The processing circuitry 810 is configured to perform the processing described above, as per executing instructions stored in memory 830. The processing circuitry 810a in this regard may implement certain functional means, units or modules.
[00123] Figure 9 illustrates a schematic block diagram of a modality of a network node 900 in a wireless network according to several
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37/59 modalities, as described here (for example, the network node shown in Figures 1 and 6). In Figure 9, network node 900 implements several means, units or functional modules (for example, through the set of processing circuits 810 in Figure 8 and / or via software code). In one embodiment, these functional means, units or modules (for example, to implement the method (s) in the present invention) may include, for example: a QCL 901 guess assumption unit to obtain one of a plurality of assumptions of QCL; a QCL assumption determination unit 903 for determining one of the plurality of QCL assumptions for the wireless device; a transmission unit 905 for transmitting to the wireless device an indication of the obtained QCL assumption or a signal of a certain type based on the obtained QCL assumption that associates that signal with a reference signal transmitted by the network node to the wireless device; and a receiving unit 907 for receiving, from the wireless device, a signal of a certain type based on the assumption of QCL obtained that associates that signal with a reference signal transmitted by the network node to the wireless device.
[00124] Figure 10 illustrates a modality of a method 1000 performed by a network node to select a cell to transmit control information according to the various modalities described here. In Figure 10, method 1000 can begin, for example, at block 1001, where it can include determining one of a plurality of QCL assumptions for the wireless device. In addition, each assumption associates a certain reception of a reference signal by a wireless device with a transmission or reception of a signal of a certain type by that wireless device. In addition, method 1000 includes obtaining one of the plurality of QCL assumptions, as represented by block 1003. In block 1005, method 1000 includes transmitting an indication of the obtained QCL assumption to the wireless device. In
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38/59 response, method 1000 may include transmitting or receiving, to or from the wireless device, a signal of a certain type based on the assumption of QCL obtained that associates that signal with a reference signal transmitted by the network node wireless device, as shown in block 1007.
BEAM MANAGEMENT:
[00125] In NR, different system requirements associated with QCL can be applied. In a first example, a QCL indication is supported between the antenna ports of two CSI-RS resources. By default, no QCL can be assumed between the antenna ports of two CSI-RS resources. Partial QCL parameters (for example, only spatial QCL parameter on the UE side) can be considered. For downlink, NR supports the reception of CSI-RS with and without beam-related indication. When a beam-related indication is provided, the information pertaining to the UE side beam forming / receiving procedure used for CSI-RS based measurement can be indicated via QCL for UE. In addition, the QCL information includes spatial parameter (s) for UE side reception of CSI-RS ports.
[00126] In a second example, the NR-PDCCH transmission supports robustness against beam pair link blocking. A UE can be configured to monitor NR-PDCCH on M beam pair links simultaneously, where M> 1. The maximum value of M may depend at least on the capacity of the UE. In addition, a UE can choose at least one beam from among M for receiving NR-PDCCH. A UE can be configured to monitor NR-PDCCH in different beam pair link (s) in different NR-PDCCH OFDM symbols. The NR-PDCCH on a beam pair link can be monitored with a shorter duty cycle than other beam pair link (s). This setting can apply to scenarios where a UE can
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39/59 not having multiple RF chains. The parameters related to the UE Rx beam configuration to monitor NR-PDCCH in several beam pair links are configured by upper layer signaling or Media Access Control (EC) Control Element (MAC) or considered in the design. research space.
[00127] In a third example, for receiving a unicast DL data channel, an indication of a spatial QCL assumption between DL RS antenna port (s) and DMRS antenna port (s) is supported. DL data channel. The information indicating the RS antenna port (s) is indicated through Downlink Control Information (DCI) (downlink concessions). The information indicates the RS antenna port (s) undergoing QCL with the DMRS antenna port (s). In addition, the RS / Resource ID port can be implicitly or explicitly indicated. In one example, the indication is assumed only for the stepped PDSCH or until the next indication. In addition, a beam / step switching offset can be included. In addition, a beam indication for receiving backstop unity broadcast PDSCH can be included. In addition, the related signage may be EU specific.
Manipulation of multiple beam pair links (GLP):
[00128] The establishment and maintenance of multiple GLPs has several purposes. One purpose is to achieve the robustness of PDCCH, so that gNB can transmit PDCCH on several beam pair links simultaneously or in TDM mode (for example, the second example above). Another use is the support for joint non-coherent transmission (JT) or multiple inputs and multiple distributed outputs (D-MIMO), where different BPLs potentially carry different PDSCHs. In either case, a beam-related indication is required to assist the formation of the EU-side beam (or
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40/59 ie UE Rx beam selection).
[00129] As the main tool for maintaining (updating) beam pair links is the UE measurement of CSI-RS resources formed of multiple beams and the subsequent return of a selection of resources, a beam pair link is by nature associated with a previously transmitted CSI-RS resource. It is important to note that beam pair link terminology (BPL) is a useful construction for discussion; however, the term itself may not appear in specifications for industry standards. Otherwise, then the striking feature that could be captured is that a BPL is defined as a link that has been established between gNB and the UE, where the UE has selected and reported to eNB at least one favorite among several CSI-RS resources, transmitted with different transmitter configurations (Tx beams) and where a preferred UE receiver configuration (Rx beam) was determined by the UE based on the selected CSI-RS feature.
[00130] Based on this, it automatically follows that a beam-related indication is a reference to a previously transmitted CSI-RS resource on which the UE performed a measurement. If the previously transmitted CSI-RS resource is reported to the UE in association with a current DL transmission (for example, PDSCH, PDCCH or CSI-RS), then the UE can use this information to assist in beam formation from side to side. HUH. An equivalent statement is that the current transmission of PDSCH DMRS, PDCCH DMRS or CSI-RS is QCL spatially in the UE RX with the transmitted CSI-RS feature referred to in the beam-related indication.
[00131] This clearly shows that the reference to the CSI-RS resource transmitted earlier is precisely an indication of QCL, consistent with the first example above.
[00132] One problem is how to refer to a CSI-RS resource
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41/59 previously transmitted. One approach may be that each CSIRS resource has an identifier (for example, a timestamp in terms of the radio frame number, interval number and OFDM symbol number that can be used to uniquely identify the CSI-RS resource). However, this unique identification of resources can consume a large amount of overhead. This is undesirable, considering that the beam-related indication can be signaled dynamically (for example, through DCI or MAC-CE). Another approach may be that a CSI-RS resource is always associated with a single Tx beam in the network, and the beam-related indication for the UE uses that beam number. However, the number of beams can be a very large number, again leading to an overload problem.
[00133] Instead of relying on absolute timestamps or fixed beam numbers, an alternative approach is to use a relative CSIRS resource indicator - or proxy - to refer to a previously transmitted CSI-RS. Since the number of BPLs maintained can be quite small, the proxy indicator can have a very low overhead (for example, two bits), allowing the maintenance of up to four BPLs. You can think of the proxy as a BPL tag. Associated with each BPL tag is (1) the Tx configuration (Tx beam) corresponding to the CSI-RS resource selected by the UE, and (2) the preferred UE receiver configuration (Rx beam) associated with the resource CSI-RS selected. It is important to realize that all that is needed is for the gNB to remember the Tx configuration (Tx beam) associated with the BPL tag and for the UE to remember the Rx configuration (Rx beam) associated with the BPL tag. BPL. The gNB does not need to know the bundle of UE Rx, nor does the UE need to know the bundle of gNB Tx. Absolute beam indexes are not required. Thus, in the future, if a BPL tag is signaled to the UE along with a DL signal transmission (for example, PDSCH or CSI-RS), the UE may
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42/59 retrieve the Rx configuration used to receive the CSI-RS resource previously transmitted from its memory. This indication assists in forming the UE side beam to effectively receive the DL signal transmission.
[00134] To support downlink beam management, three procedures, procedures Pl, P2 and P3, can be applied. In procedure P2, the transmitter sends the same reference signal several times (for example, in different OFDM symbols) and each time in a different beam direction (for example, different pre-coding weights from multiple antennas). This is called a transmitter beam scan. The UE keeps the RX beam unchanged during this beam scan and the UE can then report which one of these multiple beams it prefers. In procedure P3, the transmitter sends the same reference signal several times (for example, in different OFDM symbols) and each time in the same beam direction. The receiver can then change its receiver beam direction (for example, receiver weights from multiple different antennas) at each occasion and therefore assess which is the preferred receiving beam for that specific transmission beam. Finally, the PI procedure is a combination of the P2 and P3 procedures, in which both the transmitter and receiver are allowed to alter their beams during the beam scan.
[00135] An important use case for GLP tags is when updating (refining) a specific BPL, say, the one with the #b tag. As already discussed, this BPL with the tag #b is associated with a CSI-RS resource that the UE has previously measured. The GLP can be updated, for example, with procedure P2. In this case, gNB can trigger the UE to measure and report an aperiodic CSI-RS beam scan. The DCI message carrying the measurement and reporting trigger must also include the label
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43/59 BPL # b. With this indication, the UE consults in memory which configuration of Rx (Rx beam) is currently associated with the #b tag, and is free to use this information to assist in receiving the transmitted CSI-RS resources. The signaling of the #b tag is equivalent to a QCL indication that says that the CSI-RS resources currently transmitted are QCL spatially in UE RX with the CSI-RS resource transmitted previously associated with the #b tag. As mentioned earlier, to support up to four BPLs (for example, b G {0,1,2,3}), only two bits are required in the DCI message, which exclusively indicates the previously transmitted CSI-RS resource.
[00136] The associated aperiodic CSI report will indicate a preferred CSI-RS resource through a Competition Resolution Identifier (CRI). The CSI-RS resource corresponding to this CRI is now the new updated CSIRS associated with the #b tag. GNB stores the Tx configuration (Tx beam) associated with the #b tag in memory for future use. This could be used, for example, to ensure that a future aperiodic CSIRS beam scan includes the old Tx beam to be used as a benchmark against which the UE will compare possible new Tx beams.
[00137] Alternatively, the BPL with the #b tag can be updated with a P3 procedure. In this case, gNB can trigger the UE to measure and report various CSI-RS resources for which the Tx (Tx beam) configuration is kept fixed. The fixed Tx beam is already associated with the #b tag. Again, the DCI message carrying the measurement trigger must include the BPL tag # b. However, the UE also needs to be informed that it must assume that the CSI-RS resources currently transmitted are not spatially QCL in the UE RX with the CSI-RS resource transmitted previously associated with the #b tag. This can be done using a separate flag (one bit) to inform the UE whether or not it is a beam scan using the P3 procedure.
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This flag can be signaled to the UE dynamically or configured through upper layers (for example, within the CSI framework). Anyway, when this flag is set to FALSE, the UE should not use the Rx (Rx beam) configuration used to receive the previous CSI-RS feature, as the purpose of the P3 beam scan is for the UE to try new Rx bundles, do not keep your Rx bundle fixed. Once the preferred Rx beam has been found, the UE must remember the associated Rx configuration and associate it with the #b tag. Since the Tx configuration (Tx beam) remains fixed, there is no need to associate a new CSI-RS with the #b tag, nor is there a need for the UE to report CRI. However, gNB can still configure the UE to report other CSI components (for example, Channel Quality Indicator (CQI), Pre-coding Matrix Indicator (PMI), Pre-coding Matrix index), index Classification (RI)) to support link adaptation.
[00138] The following two modalities support beam management procedures for establishing and maintaining multiple GLPs between the gNB and an UE. By triggering multiple beam scans with different BPL tags, the measurements reported for each BPL allow the gNB to associate a preferred UE gx Tx beam for each BPL tag and allow the UE to associate a preferred UE Rx beam for each GLP tag. Therefore, up to four BPLs can be established using a two-bit BPL tag.
[00139] In one embodiment, in an aperiodic CSI-RS beam scan, in order to reference a CSI-RS resource previously transmitted for spatial QCL purposes, the measurement and reporting trigger (for example, in DCI) contains a BPL tag using two bits.
[00140] In another modality, in an aperiodic transmission of several CSI-RS resources in which gNB keeps its Tx beam constant (for example,
Petition 870190092409, of 16/09/2019, p. 192/241 example, procedure P3), the UE should receive a one-bit flag set to FALSE to indicate that the CSI-RS resources are non-QCL spatially with a previously transmitted CSI-RS resource. This flag can be flagged dynamically or, if configured by upper layers, this flag can be flagged as part of the CSI framework.
[00141] Parallel to the procedures for establishing and maintaining multiple BPLs, the UE can be configured with at least one BPL for monitoring PDCCH. The BPL that the UE must use to receive PDCCH is configured by indicating the associated two-bit BPL tag (for example, through upper layer signaling). Alternatively, it can be specified that, in the case of PDCCH monitoring of only a single BPL, the BPL 0 tag is always used. According to the second example above, M BPLs can be configured to monitor PDCCH, simultaneously or in a form of TDM. In this case, the UE must be configured with M two-bit BPL tags.
[00142] In one embodiment, a UE can be configured to monitor NR-PDCCH in M beam pair links, where each beam pair link is indicated by a BPL tag using two bits.
[00143] Another use case for GLP tags is for data transmission (for example, different PDSCHs from different TRPs; or non-coherent JT or D-MIMO, where different BPLs potentially carry different PDSCHs). A BPL tag included in the staggered DCI assists the formation of the UE side beam to receive the corresponding PDSCH.
[00144] In one embodiment, in a PDSCH transmission, the associated DCI contains a BPL tag using two bits which indicates that the DMRS for PDSCH is QCL spatially with the CSI-RS feature transmitted previously associated with the BPL tag.
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46/59 [00145] For the above, beam management consists of three quite independent processes:
(1) establishing and maintaining multiple BPLs, each identified with a two-bit BPL tag;
(2) the GLP (s) to be used for the control channel; and (3) the GLP (s) used for the data channel.
[00146] Although BPLs are considered independent, when a BPL TX and RX beam is updated in the measurement process, it reflects the beams that can be used for the control channels and the data channels that also use the BPL.
Group-based beam reporting:
[00147] Another issue is related to the group / group-based report, which can be useful for UEs capable of supporting simultaneous reception on two or more beam pair links (BPLs). This UE capability may be the result of an UE equipped with two or more antenna panels with separate receiving chains. A working assumption is that the NR must support at least one of the two alternatives for this report: a group-based report and / or a group-based report.
[00148] Another issue is related to overload. The reporting of beam-related information across multiple bundle sets / groups obviously generates extra return overhead compared to single-beam reporting. For example, reports based on sets and groups can offer gNB the same flexibility in selecting between Tx beams that can be received simultaneously at the UE; however, for equal flexibility, the payback overhead for set-based reports can be greater than group-based reports.
[00149] Another consideration of overload is the related indication
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47/59 the beam on the downlink (for example, the indication of QCL to support the UE side beam formation when beams from different sets are groups selected for transmission). As with uplink overhead, there may be differences in overhead between cluster-based and group-based reporting when gNB would like to select multiple beams for transmission within a cluster or between groups.
QCL TO DL RS:
[00150] With respect to QCL for DL RS, different system requirements associated with QCL can be applied. In a first example, grouping of DMRS ports can be supported, with DMRS ports in one group suffering QCL and DMRS ports in different groups suffering QCL. DMRS can be grouped according to continuous wave analog (CW) beams, or the like. In addition, the QCL indication can be signaled using, for example, radio resource control (RRC), MAC CE, DCI or similar. In addition, a DMRS can be used to estimate large-scale properties of a channel, such as Doppler shift, Doppler dispersion, delay dispersion or the like. In addition, QCL supports features such as beam management (for example, spatial parameters), frequency shift / timing estimation (for example, Doppler / delay parameters), radio resource management (RRM) (for example, average gain ). In addition, if the UE has staggered more than one PDSCH in an interval (this is the typical case of multi-TRP using, for example, non-coherent JT), then the DMRS in the first and second PDSCH may not undergo QCL.
[00151] In a second example, an indication of a QCL assumption associated with a subset of QCL parameters between antenna ports of two RS resources can be supported based on several alternatives. These alternatives may include at least one of (1) which
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48/59 subset of QCL parameters is configured by gNB, (2) which type of QCL is configured by gNB, where various types of QCL are predefined and (3) which types of QCL are predefined.
[00152] In a third example, the UE is not indicated by default. Consequently, antenna ports transmitted on different CCs are not considered to have undergone QCL.
[00153] In a fourth example, an indication of the QCL assumption for CSI-RS can be associated with an SS block such as (for example, SSS, PBCH DMRS (if defined)), RS for fine time-frequency tracking ( if not CSI-RS), or similar.
[00154] In one modality, the DMRS belonging to different PDSCH scheduling in the same interval is not, by default, QCL. Therefore, DMRS in one PDSCH is the first group and DMRS in the other PDSCH is the second group.
[00155] When it comes to non-QCL DMRS groups in a single PDSCH, the intended use case would be multi-TRP transmission for the general QCL parameter case or multi-beam transmission from a single TRP for the case of spatial QCL. The latter is valid for UEs with analog beam formation (due to the use of spatial QCL), which has the capacity to receive more than one beam at the same time. As a baseline, dual PDSCH scaling can be used for this case.
[00156] The implementation of gNB of very wide bandwidths compared to LTE can use independent calibration circuits, clocks and DC oscillators. Therefore, beam management procedures and, therefore, spatial QCL per carrier can be operated independently.
[00157] In one mode, beam management and therefore
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49/59 sQCL assumptions operate independently by component carrier.
QCL between SS, RAR and PDCCH DMRS block:
[00158] This section focuses on spatial QCL, to assist in beam management for millimeter wave (mm) operation, while there is a more general discussion of the QCL required for other QCL parameters, such as average delay, average gain, Doppler or similar, and if you link the CSIRS to the RSs used for thin channel tracking using QCL. The UE will detect an SS block that may have sector coverage (in the case of a single SS block per TRP) or very wide beam width (in the case of some SS blocks per TRP). The SS block detected by the UE is known through the initial access procedure (that is, related to the PRACH preamble feature used). SS block bundles are not expected to be very narrow in beam width, at least not in the normal case, as there are problems with, for example, overload (although a large number of SS blocks may be allowed in the specifications to support extreme cases of coverage where overload is not the biggest concern).
[00159] An independent random access response (RAR) is used, and the RAR can be spatially QCL in the UE with the detected SS block, if indicated in the PBCH. It is reasonable to transmit the initial PDCCH by default on the same beam as the detected RAR; and, therefore, also the SS block, if indicated by the PBCH. The standard PDCCH allows the gNB to configure the UE with, for example, CSI-RS for beam management.
[00160] In one mode, the UE can assume by default that the
PDCCH DMRS is spatial QCL with the detected SS block, if indicated in the broadcast PBCH. This standard spatial QCL can be replaced by dedicated, EU-specific RRC signaling.
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50/59 [00161] On the other hand, for PDSCH and possibly also for PDCCH, narrower beams can be used and these beams can be selected and managed by beam management using dedicated CSI-RS measurements. Therefore, in this case, the PDCCH and PDSCH can be configured to be QCL spatially with the CSI-RS feature indicated in the beam management procedure (beam indication). Depending on the channel to be received, the UE may use different spatial QCL assumptions, for example, PDCCH with the preferred and detected SS block (SS-QCL), PDCCH with a configured CSI-RS (CSI-RS-QCL) or similar .
QCL between CSI-RS resources:
[00162] QCL between antenna ports of two CSI-RS resources can be supported. In addition, dynamic indication of partial gCL and EU side QCL assumptions between the CSI-RS Pl and P2 / P3 beam scans can be supported. Therefore, when triggering an aperiodic CSI-RS beam scan and an associated aperiodic CSI report containing CRI, the triggering DCI can contain a reference to a previously transmitted CSI-RS resource, so that the UE can use that information to adjust your RX beam.
[00163] In addition, a proxy such as beam pair link identity (BPL) can be used when referring to a previous CSI-RS resource. Therefore, when triggering a P2 / P3, a BPL index is included in the triggering DCI and that BPL is, in turn, linked to a specific CSI-RS resource that the UE measured and reported at an earlier time.
[00164] In one embodiment, the dynamic indication in the DCI of spatial QCL assumptions between CSI-RS resources when triggering a CSI-RS measurement for beam management is supported.
QCL TO UL RS:
[00165] Regarding QCL for UL RS, different requirements for
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51/59 system can be applied. The NR can support with and without a downlink indication to derive the QCL assumption to assist UE side beam formation for downlink control channel reception. This indication can be signaled using, for example, DCI, MAC CE, RRC or similar. In addition, a beam-related indication can be used for control channels and DL data. In addition, for the downlink, NR can support beam management with and without beam-related indications. When a beam-related indication is provided, the information pertaining to the UE side beam forming / receiving procedure used for data reception can be indicated via QCL for UE. The Tx / Rx beam match in TRP and UE can be defined. In one example, the Tx / Rx beam match in TRP is maintained if at least one of the following options is satisfied: The TRP is able to determine a TRP Rx beam for uplink reception based on downlink measurement. of the UE in one or more TRP Tx beams, and TRP is able to determine a TRP Tx beam for downlink transmission based on TRP uplink measurement in one or more TRP Rx beams. In another example, the Tx / Rx beam match in the UE is maintained if at least one of the following options is satisfied: The UE can determine a UE Tx beam for the uplink transmission based on the UE downlink measurement. on one or more Rx beams from the UE, and UE is able to determine a UE Rx beam for downlink reception based on the TRP indication based on the uplink measurement on one or more Tx beams from the UE.
[00166] For UL transmission not based on coding table, frequency selective pre-coding for Cyclic Prefix (CP) OFDM is supported when the number of transmission ports is greater than
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52/59 a predetermined number, such as two doors, three doors, four doors or the like. In addition, the DL measurement RS indication is supported to allow the UE to calculate the candidate precoder. In addition, the mechanisms for determining UL pre-encoder can be based on pre-encoded SRS, non-precoded SRS, hybrid precoded, non-precoded SRS or the like.
[00167] For nodes that have transmitter and receiver chains calibrated with reciprocity, it can be known when a signal that will be received is the reciprocal response to another signal that was transmitted previously or vice versa. That is, assuming that an analog beam-forming node is transmitting an SRS or PRACH with some analog beam, upon receiving a poll or PRACH response, the UE can expect the response to arrive via the reciprocal channel, to which the receiver beam could favorably be the same beam that was used for reciprocal transmission. Likewise, the PRACH transmission can be a response to a received SS block or a mobility RS. Thus, the spatial QCL framework can be extended to also cover the use case of reciprocal responses for analog beam formation by defining the received signal as reciprocally almost colocalized with the transmitted signal or vice versa.
[00168] In one embodiment, the reciprocal spatial almost colocalization is supported on a node, where a signal received at a node and a signal transmitted from the same node are spatially QCL.
[00169] In particular, when beam matching is maintained at the UE, which can probably be a standard operation, then the UE can be signaled to transmit pre-encoded SRS or a pre-encoded PUSCH or PUCCH in the same direction in which it received a certain CSI-RS.
[00170] In one embodiment, the reciprocal spatial QCL is supported in
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UE between the receipt of an SS block or a CSI-RS resource and a transmitted signal, such as an SRS, PUCCH or PUSCH resource.
[00171] This will ensure that a gNB knows the spatial correlation of reception of a signal transmitted from the UE; thus, gNB can adapt its receiver accordingly. For UL data transmission not based on a codebook (ie, where pre-coding is decided by the UE), the DL measurement RS indication can be supported so that the UE can calculate the candidate pre-coder.
[00172] In one embodiment, in the UL B transmission scheme, a DL indication defines which CSI-RS is reciprocally and spatially QCL with the scaled PUSCH and PUCCH DMRS. This signage can at least be included in the DCI carrying the UL concession. The UL B transmission scheme is an uplink based on channel reciprocity. In addition, the UE can determine the precoder itself. The UL B transmission scheme can also be called an uplink transmission scheme not a codebook.
[00173] Furthermore, when there is a problem with uplink interference in which many UEs transmit data and sound at the same time and the network is dense (for example, many gNBs in a small area), it is beneficial to reduce interference from uplink using uplink pre-coding in channel reciprocity.
[00174] In one embodiment, suppression of uplink interference is supported in relation to the victim gNB using pre-coded transmitted signals from the UE, defining that the transmission is not spatially QCL (in a reciprocal sense) with the receipt of a resource CSI-RS transmitted from a TRP or gNB victim. The transmitted signal can be, for example, PUSCH, PUCCH, SRS or the like. Again, it may be necessary
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54/59 additional explicit signaling to indicate which CSI-RS resources are victims and which are desired.
ABBREVIATIONS:
Abbreviation Explanation 3GPP Third Generation Partnership Project 5G Fifth generation mobile networks or wireless systems BS Base Station CE Control element CP Cyclic prefix CRC Cyclic Redundancy Check CRS Cell-specific reference signal CSI Channel Status Information CSI-RS Channel State Information Reference Signal CSS Common Research Space DL Downlink DMRS Demodulation Reference Signal eNB Evolved B node (i.e. base station) E-UTRA Evolved Universal Terrestrial Radio Access E-UTRAN Evolved Universal Terrestrial Radio Access Network D FT Discrete Fourier Transform FDD Frequency Division Duplexing IFFT Fast Inverse Fourier Transform loT Internet of Things LTE Long Term Evolution MAC Media Access Control MIMO Multiple Inputs Multiple Outputs MSR Multipattern Radio
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TCM Machine type communication NB Narrow band NB-loT Narrowband Internet of Things
NB-LTE LTE Narrowband (eg 180 KHz bandwidth)
NB-PBCH NB-loT Physical Diffusion Channel NB-PSS NB-loT Primary Sync Sequence
NB-SSS NB-loT Secondary Synchronization Sequence
OFDM Orthogonal Frequency Division Modulation OFDMA Orthogonal Frequency Division Modulation Access PAN Power amplifier PAPR Peak-to-Average Power Rate PBCH Physical Diffusion Channel
PDCCH Physical Data Control Channel
PDCP Packet Data Convergence Protocol (PDCP) PDU Protocol Data Unit PRACH Physical Random Access Channel PRB Physical Resource Block PSD Spectral Power Density PSS Primary Sync Sequence PUSCH Physical Uplink Shared Channel RACH Random Access Channel RAT Radio Access Technology RBR Recommended Bit Rate RF Radio Frequency RRC Radio Resource Control LOL Reference signal RX Receptor
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SoC System on a Chip SC-FDMA Carrier Frequency Division Multiple Access
Only
SFBC Spatial Frequency Block Coding SIB System Information Block YEA Subscriber Identity Module or Subscriber Module
Subscriber Identification
SNR Signal to Noise Ratio SRS Polling Reference Signal SS Sync Signal SSS Secondary Sync Sequence TDD Time Division Duplexing TSS Tertiary Sync signal or Sync signal
Time
TX Transmitter HUH User Equipment UL Ascending Link USS EU Specific Research Space WB-LTE Broadband LTE (ie corresponds to legacy LTE) ZC Zadoff-Chu algorithm [00175] The various aspects described in this document can be
implemented using standard engineering or programming techniques to produce software, firmware, hardware (for example, circuits), or any combination thereof to control a computing device to implement the disclosed matter. It will be appreciated that some modalities can be composed of one or more generic or specialized processors, such as microprocessors, digital signal processors,
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57/59 custom processors and programmable field port arrays (FPGAs) and unique stored program instructions (including software and firmware) that control the one or more processors to implement, in conjunction with certain non-processor circuits, some, most or all functions of the methods, devices and systems described in this document. Alternatively, some or all of the functions can be implemented by a state machine that does not have stored program instructions or in one or more application-specific integrated circuits (ASICs), in which each function or some combinations of certain functions are implemented as circuits custom logic. Obviously, a combination of the two approaches can be used. In addition, it is expected that someone with common skill, despite the possibly significant effort and many design options motivated by, for example, available time, current technology and economic considerations, when guided by the concepts and principles disclosed here, will be able to promptly generate instructions and software programs and CIs with minimal experimentation.
[00176] The term article of manufacture, as used here, is intended to encompass a computer program accessible from any device, carrier or computing medium. For example, a computer-readable medium may include: a magnetic storage device, such as a hard drive, a floppy disk or a magnetic strip; an optical disc such as a compact disc (CD) or digital versatile disc (DVD); a smart card; and a flash memory device, such as a card, rod, or key unit. In addition, it should be considered that a carrier wave can be used to transport computer-readable electronic data, including that used in the transmission and reception of electronic data, such as electronic mail (e-mail) or accessing a computer network, such as
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Internet or a local area network (LAN). Obviously, a person skilled in the art will recognize that many modifications can be made to this configuration without departing from the scope or spirit of the object of this invention.
[00177] Throughout the specification and modalities, the following terms assume at least the meanings explicitly associated here, unless the context clearly indicates otherwise. Relational terms such as first and second and the like can be used only to distinguish an entity or action from another entity or action without necessarily requiring or implying any real relationship or order between those entities or actions. The term is either meant to mean one or inclusive, unless otherwise specified or clear from context, to be directed to an exclusive way. In addition, the terms one, one and o are intended to mean one or more unless otherwise specified or clear from context to be directed to a singular form. The term include and its various forms is intended to mean inclusion, but not limited to. References to 1 modality, a modality, example of modality, various modalities and other similar terms indicate that the modalities of the disclosed technology thus described may include a particular function, resource, structure or characteristic, but not all modalities necessarily include the function, resource , particular structure or feature. In addition, the repeated use of the phrase in a modality does not necessarily refer to the same modality, although it may. The terms substantially, essentially, approximately, or any other version thereof, are defined as close to those understood by one skilled in the art and, in a non-limiting modality, the term is defined as being within 10%, in another modality within 5%, in another modality within 1% and in another modality within 0.5%. a
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59/59 device or structure that is configured in a certain way is configured in at least that way, but can also be configured in ways that are not listed.

权利要求:
Claims (56)
[1]
1. Method performed by a wireless device (105, 200, 300a-b, 500, 605) in a wireless communications system (100), characterized by the fact that it comprises:
transmit or receive (407), by the wireless device, a first signal of a first type (113) using a first transmitter or receiver configuration based on a first quasi-colocalization (QCL) assumption (121) associating the first signal to a first reference signal (111) received by the wireless device; and transmitting or receiving (411), by the wireless device, a second signal of a second type (117) using a second transmitter or receiver configuration based on a second QCL assumption (123) associating the second signal with a second signal reference number (115) received by the wireless device.
[2]
2. Method according to claim 1, characterized by the fact that the first reference signal is a broadcast reference signal and the second reference signal is a user equipment-specific (UE) configured reference signal.
[3]
3. Method according to claim 2, characterized by the fact that the broadcast reference signal is a reference signal in a synchronization signal block (SS) and the UE specific reference signal is a reference signal of channel status information (CSI-RS).
[4]
Method according to any one of claims 1 to 3, characterized in that the first signal is a common signal and the second signal is a user equipment-specific (UE) signal.
[5]
5. Method according to any one of claims 1 to 3, characterized by the fact that the first and second signs are signs
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2/12 specific user equipment (EU).
[6]
Method according to any one of claims 1 to 5, characterized in that the first reference signal is a reference signal in a preferred synchronization signal block (SS) and the first signal is a search space common or a common group search space of a physical downlink control channel (PDCCH).
[7]
Method according to any one of claims 1 to 5, characterized in that the first reference signal is a reference signal in a preferred synchronization signal (SS) block and the first signal is a search space specific user equipment (UE) of a physical downlink control channel (PDCCH).
[8]
Method according to any one of claims 1 to 7, characterized in that the second reference signal is a channel status information reference signal (CSI-RS) and the second signal is a reference signal demodulation (DMRS) for a user equipment-specific search space (UE) of a physical downlink control channel (PDCCH).
[9]
Method according to any one of claims 1 to 7, characterized in that the second reference signal is a channel status information reference signal (CSI-RS) and the second signal is a research space specific user equipment (UE) of a physical downlink control channel (PDCCH).
[10]
Method according to any one of claims 1 to 7, characterized in that the second reference signal is a reference signal (RS) in a preferred synchronization signal block (SS) and the second signal is a physical random access channel (PRACH) signal or a beam failure recovery signal.
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12/3
[11]
Method according to any one of claims 1 to 7, characterized in that the second reference signal is a channel status information reference signal (CSI-RS) and the second signal is a channel signal uplink shared (PUSCH).
[12]
12. Method according to any of claims 1 to 7, characterized in that the second reference signal is a channel status information reference signal (CSI-RS) and the second signal is a shared link channel. physical descendant (PDSCH).
[13]
13. Method according to any one of claims 1 to 7, characterized in that the second reference signal is a channel status information reference signal (CSI-RS) and the second signal is a channel signal physical uplink control (PUCCH).
[14]
Method according to any one of claims 1 to 13, characterized in that the first receiver configuration corresponds to a beam direction used to receive the first reference signal.
[15]
15. Method according to any one of claims 1 to 14, characterized in that the second transmitter or receiver configuration corresponds to a beam direction used to receive the second reference signal.
[16]
16. Method according to any one of claims 1 to 15, characterized by the fact that it further comprises:
determine (405) the first transmitter or receiver configuration based on the first QCL assumption.
[17]
17. Method according to claim 16, characterized in that said determination of the first transmitter or receiver configuration includes determining a transmission pre-encoder or receiving beam-forming weights to enable transmission or reception of the
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4/12 first signal based on reception beam formation weights that enabled the reception of the first reference signal.
[18]
18. Method according to any one of claims 1 to 17, characterized by the fact that it further comprises:
determine (409) the second transmitter or receiver configuration based on the second QCL assumption.
[19]
19. Method according to claim 18, characterized in that said determination of the second transmitter or receiver configuration includes determining a transmitting pre-decoder or receiving beam-forming weights to enable the transmission or reception of the second signal based on reception beamforming weights that enabled the reception of the second reference signal.
[20]
20. Method according to any one of claims 1 to 19, characterized in that the assumption of QCL is an assumption of spatial QCL.
[21]
21. Method according to any one of claims 1 to 20, characterized by the fact that it further comprises:
receive (401), by the wireless device, from a network node (101, 601, 800, 900), an indication of the first or second assumption of QCL.
[22]
22. Method, according to claim 21, characterized by the fact that said reception of the indication is by at least one radio resource control signaling (RRC), signaling of access control element to the medium (MAC-CE ) and downlink control (DCI) information signaling.
[23]
23. Method according to any one of claims 1 to 22, characterized in that the first or second assumption of QCL is a spatial relationship between a reference signal reception by a device
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5/12 wireless and a transmission of a signal of a certain type by that wireless device or a QCL reference between a reception of reference signal by a wireless device and a reception of a signal of a certain type by that device wireless.
[24]
24. Method according to any one of claims 1 to 23, characterized by the fact that it further comprises:
receive (403), by the wireless device, the first and second reference signals.
[25]
25. Method according to any one of claims 1 to 24, characterized in that the wireless device is a user equipment (UE).
[26]
26. Wireless device (105, 200, 300a-b, 500, 605) characterized by the fact that it is configured for:
transmitting or receiving (407) a first signal of a first type (113) using a first transmitter or receiver configuration based on a first quasi-colocalization (QCL) assumption (121) associating the first signal with a first reference signal ( 111) received by the wireless device; and transmitting or receiving (411) a second signal of a second type (117) using a second transmitter or receiver configuration based on a second QCL assumption (123) associating the second signal with a received second reference signal (115) wireless device.
[27]
27. Wireless device according to claim 26, characterized in that it is configured to execute the method, defined in any one of claims 2 to 25.
[28]
28. Wireless device (105, 200, 300a-b, 500, 605), characterized by the fact that it comprises:
Petition 870190092409, of 16/09/2019, p. 234/241
6/12 at least one processor and one memory, the memory comprising instructions executable by at least one processor whereby the wireless device is configured to:
transmitting or receiving (407) a first signal of a first type (113) using a first transmitter or receiver configuration based on a first quasi-colocalization (QCL) assumption (121) associating the first signal with a first reference signal ( 111) received by the wireless device; and transmitting or receiving (411) a second signal of a second type (117) using a second transmitter or receiver configuration based on a second QCL assumption (123) associating the second signal with a received second reference signal (115) wireless device.
[29]
29. Wireless device according to claim 28, characterized in that it is configured to perform the method, defined in any one of claims 2 to 25.
[30]
30. Wireless device (105, 200, 300a-b, 500, 605), characterized by the fact that it comprises:
a transmit / receive module (311b) for:
transmitting or receiving (407) a first signal of a first type (113) using a first transmitter or receiver configuration based on a first quasi-colocalization (QCL) assumption (121) associating the first signal with a first reference signal ( 111) received by the wireless device; and transmitting or receiving (411) a second signal of a second type (117) using a second transmitter or receiver configuration based on a second QCL assumption (123) associating the second signal with a second received reference signal (115) wireless device.
Petition 870190092409, of 16/09/2019, p. 235/241
7/12
[31]
31. Wireless device according to claim 30, characterized by the fact that it further comprises one or more modules for carrying out the method, defined in any one of claims 2 to 25.
[32]
32. Computer program, characterized by the fact that it comprises instructions that, when executed on at least one processor (301a) of a wireless device (105, 200, 300a-b, 500, 605), cause at least one processor performs the method defined in any of claims 1 to 25.
[33]
33. Carrier containing the computer program, defined in claim 32, characterized by the fact that the carrier is one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.
[34]
34. Method performed by a wireless device (105, 200, 300a-b, 500, 605) in a wireless communications system (100), characterized by the fact that it comprises:
obtain (703) one of a plurality of quasi-colocalization assumptions (QCL) (121,123), with each assumption associating a certain reference signal reception (113, 115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and transmitting or receiving (705) a signal of a certain type (113, 117) using a transmitter or receiver configuration based on the received QCL assumption (121, 123) that associates that signal with a reference signal (111, 115 ) received by the wireless device.
[35]
35. Method according to claim 34, characterized by the fact that said obtaining includes:
receive (701), from a network node, an indication of one of the
Petition 870190092409, of 16/09/2019, p. 236/241
8/12 plurality of QCL assumptions.
[36]
36. Method according to claim 35, characterized by the fact that the indication includes a subset of QCL parameters.
[37]
37. Wireless device (105, 200, 300a-b, 500, 605) characterized by the fact that it is configured to:
obtain (703) one of a plurality of quasi-colocalization assumptions (QCL) (121,123), with each assumption associating a certain reference signal reception (113, 115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and transmitting or receiving (705) a signal of a certain type (113, 117) using a transmitter or receiver configuration based on the received QCL assumption that associates that signal with a reference signal (111,115) received by the wireless device.
[38]
38. Wireless device according to claim 37, characterized in that it is configured to perform the method defined in any one of claims 35 to 37.
[39]
39. Wireless device (105, 200, 300a-b, 500, 605), characterized by the fact that it comprises:
at least one processor (301a) and one memory (303a), the memory comprising instructions executable by at least one processor whereby the wireless device is configured to:
obtain (703) one of a plurality of quasi-location assumptions (QCL) (121,123), with each assumption associating a certain reference signal reception (113, 115) by a wireless device with a transmission or reception of a signal a certain type by that wireless device; and transmit or receive (705) a signal of a certain type (113, 117) using
Petition 870190092409, of 16/09/2019, p. 237/241
9/12 a transmitter or receiver configuration based on the received QCL assumption that associates that signal to a reference signal (111,115) received by the wireless device.
[40]
40. Wireless device according to claim 37, characterized in that it is configured to perform the method, defined in claim 35 or 36.
[41]
41. Wireless device (105, 200, 300a-b, 500, 605), characterized by the fact that it comprises:
a quasi-colocalization assumption module (QCL) (317b) to obtain (703) one of a plurality of QCL assumptions (121, 123), with each assumption associating a certain reference signal reception (111,115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and a transmit / receive module (311b) for transmitting or receiving (705) a signal of a certain type (113, 117) using a transmitter or receiver configuration based on the received QCL assumption that associates that signal to an reference number (111, 115) transmitted to the wireless device.
[42]
42. Wireless device according to claim 41, characterized in that it is configured to perform the method, defined in claim 35 or 36.
[43]
43. Computer program, characterized by the fact that it comprises instructions that, when executed on at least one processor (301a) of a wireless device (105, 200, 300a-b, 500, 605), cause at least one processor performs the method defined in any of claims 34 to 36.
[44]
44. Carrier containing the computer program defined in
Petition 870190092409, of 16/09/2019, p. 238/241
10/12 claim 43, characterized by the fact that the carrier is one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.
[45]
45. Method performed by a network node (101, 601, 800, 900) in a wireless communications system (100), characterized by the fact that it comprises:
obtain (1003) one of a plurality of quasi-location assumptions (QCL) (121, 123) for a wireless device (105, 200, 300a-b, 500, 605), with each assumption associating a certain signal reception reference (111,115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and transmitting (1005) to the wireless device an indication of the obtained QCL assumption.
[46]
46. Method, according to claim 45, characterized by the fact that said obtaining includes:
determine (1001) to one of the plurality of QCL assumptions for the wireless device.
[47]
47. Method according to any of claims 45 to 46, characterized by the fact that it further comprises:
transmit or receive (1007), by the network node, to or from the wireless device, a signal of a certain type (113, 117) based on the assumption of QCL obtained that associates that signal with a reference signal (111,115 ) transmitted by the network node to the wireless device.
[48]
48. Method according to any one of claims 45 to 47, characterized in that the plurality of QCL assumptions includes at least one of a spatial relationship between a reference signal reception by a wireless device and a transmission of a signal of a certain kind by
Petition 870190092409, of 16/09/2019, p. 239/241
11/12 that wireless device and a QCL reference between a reference signal reception by a wireless device and a signal reception of a certain type by that wireless device.
[49]
49. Network node (101, 601, 800, 900) characterized by the fact that it is configured for:
obtain (1003) one of a plurality of quasi-colocalization assumptions (QCL) (121, 123) for a wireless device (105, 200, 300a-b, 500, 605), with each assumption associating a certain signal reception. reference (111,115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and transmitting (1005) to the wireless device an indication of the assumption of QCL obtained.
[50]
50. Network node, according to claim 49, characterized by the fact that it is configured to execute the method, defined in any one of claims 46 to 48.
[51]
51. Network node (101, 601, 800, 900), characterized by the fact that it comprises:
at least one processor (810) and one memory (830), the memory comprising instructions executable by at least one processor whereby the network node is configured to:
obtain (1003) one of a plurality of quasi-colocalization assumptions (QCL) (121, 123) for a wireless device (105, 200, 300a-b, 500, 605), with each assumption associating a certain signal reception. reference (111,115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117) by that wireless device; and transmitting (1005) to the wireless device an indication of the assumption of QCL obtained.
Petition 870190092409, of 16/09/2019, p. 240/241
12/12
[52]
52. Network node according to claim 51, characterized by the fact that it is configured to execute the method, defined in any one of claims 46 to 48.
[53]
53. Network node (101, 601, 800, 900), characterized by the fact that it comprises:
a quasi-colocalization assumption module (QCL) (901) to obtain (1003) one of a plurality of QCL assumptions (121,123) for a wireless device (105, 200, 300a-b, 500, 605), with each assumption associating a certain reception of reference signal (111, 115) by a wireless device (105, 200, 300a-b, 500, 605) with a transmission or reception of a signal of a certain type (113, 117 ) by that wireless device; and a transmission module (905) to transmit (1005) to the wireless device an indication of the obtained QCL assumption.
[54]
54. Network node according to claim 53, characterized in that it further comprising one or more modules for carrying out the method, defined in any one of claims 46 to 48.
[55]
55. Computer program, characterized by the fact that it comprises instructions that, when executed on at least one processor (810) of a network node (101, 601, 800, 900), cause the at least one processor to execute the method defined in any one of claims 45 to 48.
[56]
56. Carrier containing the computer program defined in claim 55, characterized by the fact that the carrier is one of an electronic signal, optical signal, radio signal, or computer-readable storage medium.

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