system and method for communicating time and frequency tracking signals using a port's csi-rss s

专利摘要:
A network controller can configure one or more signal configurations of channel state reference information (CSI-RS) to transmit RSs to user equipment (UEs) for tracking. A CSI-RS configuration can specify a set of CSI-RS resources to transmit RSs in two consecutive slots. The CSI-RS feature set can include a plurality of single port CSI-RS features configured according to the CSI-RS configuration. The CSI-RS configuration can specify a quasi-location (QCL) configuration, including a set of QCL parameters, where a demodulation reference signal (DMRS) has a QCL relationship with RS in relation to the set of QCL parameters. The network controller can signal one or more CSI-RS configurations for UEs.
公开号:BR112020002771A2
申请号:R112020002771-5
申请日:2018-08-13
公开日:2020-07-28
发明作者:Qian Cheng；Weimin Xiao；Jialing Liu；Murali Narasimha
申请人:Huawei Technologies Co., Ltd.；
IPC主号:

专利说明:

[0001] [0001] This application claims the benefit of US Provisional Application No. 62 / 544,372, filed on August 11, 2017, entitled “System and method for time and frequency tracking signal with flexible configurations of one port CSI-RS” and US Application No. 16 / 101,278, filed on August 10, 2018, entitled "System and method for time and frequency tracking signal with flexible configurations of one port CSI-RS", the order of which is incorporated into this document as a reference in its entirety. TECHNICAL FIELD
[0002] [0002] The present disclosure relates to wireless communications and, in particular modalities, to a system and method for communicating time and frequency tracking signals using configurations for CSI-RSs on a port. FUNDAMENTALS
[0003] [0003] In wireless communication operations, tracking features performed by user equipment (UE) can include fine time tracking, fine frequency tracking, delay spread estimate and Doppler spread estimate.
[0004] [0004] In fine time tracking, a UE can detect the first arrival path and, based on it, the UE can in general optimally place its Fast Fourier Transform (FFT) window to maximize a signal ratio data for noise plus interference between symbols. In continuous operation, an FFT window position can vary due to UE mobility and a residual oscillator error between a transmitter and a receiver. The UE can adjust its FFT window position based on a detected change in arrival time on the route.
[0005] [0005] In fine frequency tracking, a UE can detect a frequency deviation between a transmitter and a receiver, and adjust its oscillator accordingly. A residual frequency error can be estimated and compensated for in demodulation of data symbols. Compensating for residual frequency error can be very critical, especially in the case of high signal to noise ratio (SNR) and data transmissions with high code rate. An uncompensated frequency error can impose a phase error on modulated data symbols and result in degradation of decoding performance. As the temperature change affects the oscillator emission accuracy and Doppler shift caused by the UE movement, an UE can periodically track the frequency deviation and apply corresponding adjustment and compensation.
[0006] [0006] Spread delay determines how dispersive a multipath wireless channel is that an UE experiences. The longer the delay, the more selective the channel is. To maximize overall processing gains across the frequency domain in channel estimation based on the received pilot signals, the UE can apply linear filtering with as long a length as possible if within the coherent bandwidth of the channel. Coherent bandwidth is inversely proportional to channel selectivity. Thus, delay spreading estimation plays an important role in forming coefficients and filter length of channel estimation, thus affecting the performance of channel estimation and data demodulation.
[0007] [0007] Doppler scattering is normally proportional to UE movement speeds and the spatial distribution of multiple paths. Larger Doppler scattering corresponds to a multi-path wireless fade channel that changes faster. Channel estimation typically applies filtering in the time domain with longer filter length to suppress noise plus interference if within the coherent channel time constraint. The Doppler spread estimate is thus another factor over the time domain that affects the UE channel estimate performance. SUMMARY
[0008] [0008] Technical advantages are generally achieved by modalities of this disclosure that describe a system and method for communicating time and frequency tracking signals using settings for a port's CSI-RSs.
[0009] [0009] In accordance with one aspect of the present disclosure, a method is provided that includes: transmitting, by a network controller, a first reference signal (RS) for tracking according to a first RS status information configuration. channel (CSI-RS), the first CSI-RS configuration specifying: a first set of CSI-RS resources in two consecutive partitions to transmit the first RS, the first set of CSI-RS resources comprising a plurality of CSI-RS of a port configured according to the first CSI-RS configuration; and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters, the first QCL configuration indicating that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters.
[0010] [0010] Optionally, in any of the preceding aspects, the first set of CSI-RS features comprises four CSI-RS features of a door, the four CSI-RS features of a door being spaced evenly in a frequency domain.
[0011] [0011] Optionally, in any of the preceding aspects, the first QCL configuration comprises a second set of QCL parameters, the first QCL configuration indicating that the first DMRS has a QCL relationship with a second downlink reference signal in the second set of QCL parameters.
[0012] [0012] Optionally, in any of the foregoing aspects, the second downlink reference signal comprises a second RS for tracking.
[0013] [0013] Optionally, in any of the foregoing aspects, the second downlink reference signal comprises a synchronization signal (SS) or a physical broadcast channel block (PBCH).
[0014] [0014] Optionally, in any of the preceding aspects, the first CSI-RS configuration additionally specifies a time interval in which the first RS is transmitted periodically.
[0015] [0015] Optionally, in any of the preceding aspects, the first CSI-RS configuration additionally specifies a length of the first RS in a time domain.
[0016] [0016] Optionally, in any of the preceding aspects, the first set of QCL parameters comprises a delay average, a Doppler shift, a delay spread or a spatial receiver parameter.
[0017] [0017] Optionally, in any of the preceding aspects, the method additionally includes: signaling, by the network controller, the first CSI-RS configuration.
[0018] [0018] Optionally, in any of the preceding aspects, the method additionally includes: transmitting, by the network controller, a second RS for tracking according to a second CSI-RS configuration, the second CSI-RS configuration being different from the first configuration of CSI-RS, and the second configuration of CSI-RS specifying: a second set of CSI-RS resources in two consecutive partitions for transmission of the second RS, the second set of CSI-RS resources comprising a plurality of CSI-RS of a port configured according to the second CSI-RS configuration; and a second QCL configuration comprising a third set of QCL parameters, the second QCL configuration indicating that the second RS has a QCL relationship with a second DMRS with respect to the third set of QCL parameters.
[0019] [0019] Optionally, in any of the previous aspects, the first RS and the second RS are transmitted to the same user equipment (UE).
[0020] [0020] Optionally, in any of the preceding aspects, the first RS and the second RS are transmitted at different intervals.
[0021] [0021] Optionally, in any of the foregoing aspects, the second RS comprises an SS block, or a CSI-RS.
[0022] [0022] Optionally, in any of the preceding aspects, the first RS is transmitted using a full band, a partial band, or a data transmission bandwidth programmed by UE.
[0023] [0023] According to another aspect of the present disclosure, a base station is provided to perform the methods in any of the foregoing aspects. In some embodiments, a base station includes: a non-transitory memory store comprising instructions; and one or more processors in communication with the memory store, where the one or more processors execute the instructions to:
[0024] [0024] In accordance with another aspect of the present disclosure, a method is provided which includes: receiving, by a user equipment (UE), a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS), the first CSI-RS configuration specifying: a first set of CSI-RS resources in two consecutive partitions, the first set of CSI-RS resources comprising a plurality of CSI resources of one port configured according to the first CSI-RS configuration; and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters, the first QCL configuration indicating that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters.
[0025] [0025] Optionally, in any of the preceding aspects, the first set of CSI-RS features comprises four CSI-RS features of a door, the four CSI-RS features of a door being spaced evenly in a frequency domain.
[0026] [0026] Optionally, in any of the preceding aspects, the first QCL configuration comprises a second set of QCL parameters, the first QCL configuration indicating that the first DMRS has a QCL relationship with a second downlink reference signal in the second set of QCL parameters.
[0027] [0027] Optionally, in any of the foregoing aspects, the second downlink reference signal comprises a second RS for tracking.
[0028] [0028] Optionally, in any of the preceding aspects, the second downlink reference signal comprises a synchronization signal (SS) or a physical broadcast channel block (PBCH).
[0029] [0029] Optionally, in any of the preceding aspects, the first CSI-RS configuration additionally specifies a time interval in which the first RS is transmitted periodically.
[0030] [0030] Optionally, in any of the preceding aspects, the first CSI-RS configuration additionally specifies a length of the first RS in a time domain.
[0031] [0031] Optionally, in any of the preceding aspects, the first set of QCL parameters comprises a delay average, a Doppler shift, a delay spread, or a spatial receiver parameter.
[0032] [0032] Optionally, in any of the previous aspects, the method additionally includes: receiving, by the UE, the first configuration of CSI-RS.
[0033] [0033] Optionally, in any of the preceding aspects, the method additionally includes: receiving, by the UE, a second RS for tracking according to a second CSI-RS configuration, the second CSI-RS configuration being different from the first configuration of CSI-RS, and the second CSI-RS configuration specifying: a second set of CSI-RS resources on two consecutive partitions, the second set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the second CSI-RS configuration; and a second QCL configuration comprising a third set of QCL parameters, the second QCL configuration indicating that a second DMRS has a QCL relationship with the second RS with respect to the third set of QCL parameters.
[0034] [0034] Optionally, in any of the preceding aspects, in which the second RS comprises an SS block, or a CSI-RS.
[0035] [0035] Optionally, in any of the preceding aspects, the method additionally includes: receiving, by the UE, a period of time after which the first configuration of CSI-RS expires.
[0036] [0036] Optionally, in any of the preceding aspects, the method additionally includes: demodulate, by the UE, the first data received by the UE according to the first QCL configuration.
[0037] [0037] Optionally, in any of the preceding aspects, the method additionally includes: performing, by the UE, estimate of synchronization based on the first RS and the first QCL configuration.
[0038] [0038] Optionally, in any of the preceding aspects, the method additionally includes: performing, by the UE, channel estimation according to the first QCL configuration.
[0039] [0039] In accordance with another aspect of the present disclosure, user equipment (UE) is provided to perform the methods in any of the foregoing aspects. In some embodiments, a UE includes a non-transient memory store comprising instructions; and one or more processors in communication with the memory store, where the one or more processors execute the instructions to: make receiving a first reference signal (RS) for tracking according to a first state information RS configuration. channel (RSI-RS), the first CSI-RS configuration specifying: a first set of CSI-RS resources on two consecutive partitions to bear RSs, the first set of CSI-RS resources comprising a plurality of CSI- RS of a port configured according to the first CSI-RS configuration; and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters, the first QCL configuration indicating that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] [0040] For a more complete understanding of the present disclosure, and its advantages, reference is now made to the following descriptions taken in conjunction with the attached drawings, in which:
[0041] [0041] Figure 1 illustrates a diagram of a wireless communications network modality;
[0042] [0042] Figure 2 illustrates a diagram of a burst mode of tracking reference signals (TRS);
[0043] [0043] Figure 3 illustrates a diagram of a wireless communications network modality where a UE communicates with a base station with multiple narrow beams;
[0044] [0044] Figure 4 illustrates a modality diagram of quasi-co-location relations (QCL) between reference signals in a case of a wide TRS beam used for communication;
[0045] [0045] Figure 5 illustrates a modality diagram of QCL relationships between reference signals in a case of a narrow TRS beam used for communication;
[0046] [0046] Figure 6 illustrates a modality diagram of CSI-RS configurations of a port;
[0047] [0047] Figure 7 illustrates a modality diagram of CSI-RS configurations of a port;
[0048] [0048] Figure 8 illustrates a diagram of a TRS configuration modality for a door;
[0049] [0049] Figure 9 illustrates a diagram of another mode of configuring a door's TRS;
[0050] [0050] Figure 10 illustrates a modality diagram of a door's TRS configurations;
[0051] [0051] Figure 11 illustrates a flow chart of a method modality for wireless communications;
[0052] [0052] Figure 12 illustrates a flow chart of another method of method for wireless communications.
[0053] [0053] Figure 13 illustrates a flowchart of yet another modality of method for wireless communications.
[0054] [0054] Figure 14 illustrates a flowchart of yet another modality of method for wireless communications.
[0055] [0055] Figure 15 illustrates a diagram of a communications system modality;
[0056] [0056] Figure 16A illustrates a diagram of an electronic device modality;
[0057] [0057] Figure 16B illustrates a diagram of a base station modality; and
[0058] [0058] Figure 17 illustrates a block diagram of a computing system modality.
[0059] [0059] Corresponding numbers and symbols in the different figures generally refer to corresponding parts unless otherwise indicated. The figures are drawn to clearly illustrate the relevant aspects of the modalities and are not necessarily drawn to scale. DETAILED DESCRIPTION OF ILLUSTRATIVE MODALITIES
[0060] [0060] The manufacture and use of modalities of this disclosure are discussed in detail below. It should be noted, however, that the concepts disclosed in this document can be incorporated in a wide variety of specific contexts, and that the specific modalities discussed in this document are merely illustrative and are not intended to limit the scope of the claims. In addition, it should be understood that various changes, substitutions and amendments may be made to this document provided there is a departure from the spirit and scope of this disclosure as defined by the appended claims.
[0061] [0061] Modalities of the present disclosure provide methods and apparatus for configuring and communicating reference signals (RSs) for tracking in a wireless communications system, for example, in a new radio communications system (NR). User equipment (UEs) in a wireless communications system can perform tracking functions, such as fine time tracking, fine frequency tracking, delay spread estimate and Doppler spread estimate, based on RSs transmitted over the network to communication with the network. In some embodiments, RSs for tracking can be transmitted in a plurality of RS port-state information (CSI-RS) features configured according to one or more CSI-RS configurations. The one or more CSI-RS configurations can be signaled to the UEs so that the UEs receive the RSs for tracking and to perform tracking functions.
[0062] [0062] In some embodiments, a network controller can transmit a first RS for tracking according to a first CSI-RS configuration. The first CSI-RS configuration can specify a set of CSI-RS resources on two consecutive partitions to transmit RSs for tracking. The CSI-RS feature set can include a plurality of single port CSI-RS features configured according to the first CSI-RS configuration. The first CSI-RS configuration can also specify a near-co-location (QCL) configuration including a set of QCL parameters. The QCL setting indicates that the first RS has a QCL relationship with a demodulation reference signal (DMRS) in relation to the set of QCL parameters. The network controller can additionally transmit a second RS for tracking according to a second CSI-RS configuration which is different from the first CSI-RS configuration. The network controller can signal both the first and second CSI-RS configurations to a UE. The UE can receive the first RS for tracking according to the first CSI-RS configuration and receive the second RS for tracking according to the second CSI-RS configuration.
[0063] [0063] Figure 1 illustrates a network 100 for communicating data. Network 100 comprises a base station 110 having a coverage area 101, a plurality of mobile devices 120, and a return transport channel network 130. As shown, base station 110 establishes uplink connections (dashed line ) and / or downlink (dotted line) with mobile devices 120, which serve to carry data from mobile devices 120 to base station 110 and vice versa. Data ported via uplink / downlink connections can include data communicated between mobile devices 120, as well as data communicated to / from a remote end (not shown) via the return transport channel network 130. As used in this document, the term "base station” refers to any component (or collection of components) configured to provide wireless access to a network, such as an enhanced base station (eNB), a macrocell, a femtocell , a Wi-Fi access point (AP), or other wireless enabled devices. Base stations can provide wireless access according to one or more wireless communication protocols, for example, long-term evolution (LTE), Advanced LTE (LTE-A), High Speed Packet Access (HSPA), Wi-Fi
[0064] [0064] A UE on network 100 can perform various tracking features, such as fine time tracking, fine frequency tracking, delay spread estimate and Doppler spread estimate. In LTE, cell-specific reference signals (CRSs) can always be transmitted in each subframe, providing high-density reference signals in both the time and frequency domains. Fine time and frequency synchronization can be performed for signaling and data demodulations based on the CRSs received by a receiver. In 5G NR, however, CRSs that are always enabled are removed. This can be done to eliminate pilot signal pollution, for interference, and to facilitate cell on / off operations. A new UE-specific time and frequency tracking reference signal (TRS) has been introduced to replace tracking features performed using CRSs. A TRS can also be called an RS for tracking.
[0065] [0065] Figure 2 illustrates a diagram of a burst structure modality of TRS 200. A burst of TRS can refer to TRSs transmitted over a period of time, for example, in one or more consecutive partitions. In one embodiment, the following parameters can be used to describe a TRS burst structure and TRS burst transmission. X: the length of a TRS burst in terms of a number of partitions Y: periodicity of transmission of a TRS burst in ms N: several orthogonal frequency division (OFDM) multiplexing symbols in a partition B: bandwidth of TRS transmission in terms of multiple RBs (resource blocks) Sf: TRS subcarrier spacing
[0066] [0066] The parameters as described above can be referred to as TRS parameters. With reference to Figure 2, the burst structure of TRS 200 shows that a burst of TRS with a length of X (i.e., 3 partitions in this example) is transmitted every Y ms. Each square in this example represents a partition. Different tracking targets may impose different minimum requirements on the density of time and frequency of RRTs. For example, TRSs used for time-spreading and delay tracking require a denser pilot (for example, TRSs) in frequency domain, that is, smaller subcarrier spacing (Sf), and a given bandwidth (B) of transmission TRS wide enough. Although TRSs used for frequency tracking may place less demands on signal frequency density and transmission bandwidth, it may be desired that a TRS be transmitted on several OFDM symbols with a given time interval large (ie, St) for best estimate of phase rotation.
[0067] [0067] Various scenarios can also affect desired TRS parameter settings. For example, in a case of a high-speed train, the Doppler shift experienced by an UE passing through its base service station may suddenly change the signal (ie, + or -), but it remains of a similar magnitude. An absolute difference of two Doppler displacements before and after the UE passes its base service station can be very large due to the rapid speed of the UE. To facilitate the UE to correctly estimate the Doppler shift (or Doppler shift state) and apply corresponding phase compensation, more frequent transmission of TRSs may be desired for frequency tracking (ie, Y minor and N major). System overhead can increase with more frequent transmission of TRS. Thus, the TRS may need to be configured in a specific UE manner and transmitted with specific frequency resources.
[0068] [0068] 3GPP NR also supports wireless communication for high frequency bands, for example, millimeter wave spectrum. At higher frequencies, beam transmission can be used to overcome higher path loss. The beam formation can be applied not only to UE-specific downlink and uplink data transmissions, but also to common channels such as synchronization and control channels. Synchronization and control channels can be transmitted with a wider beam for better coverage, and data can be transmitted with a narrower beam for the desired data transmission capacity. Figure 3 illustrates a diagram of a wireless communications network modality 300, where an UE 302 communicates with a base station 304 with multiple narrow beams. UE 302 can communicate with base station 304 on link 312 (i.e., a beam link pair) and link 314 using narrow beams pointing in different directions. Depending on the beam width that an UE uses, the UE can observe different Doppler shifts, delay scatters and Doppler scatters. In some cases, even an UE uses narrow beams of the same bandwidth, UE tracking parameters can be different when the beams are pointing in different directions.
[0069] [0069] Assumptions of nearly co-location (or near co-location, QCL) can be made to transmit reference signals in communications using narrow or wide beams. The QCL is defined in 3GPP TR 38.802 V2.0.0, section 6.1.6.5, which is incorporated by reference in this document in its entirety, where the definition of QCL is that “two antenna ports are said to be almost co-located if properties of the channel in which a symbol on one antenna port is carried can be inferred from the channel by which a symbol on the other antenna port is carried ”. QCL as defined supports the following features: - Beam management functionality: at least including spatial parameters - Frequency / timing offset estimation functionality: at least including Doppler / delay parameters - RRM management functionality: at least including average of gain
[0070] [0070] A QCL assumption can be referred to as a QCL configuration indicating a QCL relationship between entities, for example, different reference signals. The terms "QCL assumption" and "QCL configuration" are used interchangeably throughout the disclosure. For example, a QCL configuration may indicate that a first reference signal has a QCL relationship (or is almost co-located) with a second reference signal. In this case, one or more parameters that are required by the first reference signal (for example, used to receive and decode the first reference signal) can be obtained (or derived) by using the second reference signal. Thus, the QCL configuration can also include the one or more parameters. The one or more parameters can be referred to as QCL parameters. In another work, a QCL assumption indicates or specifies a QCL relationship between two reference signals in relation to one or more QCL parameters. A reference signal can include a synchronization signal (SS) or an SS block, a physical broadcast channel block (PBCH), channel status reference signal information (CSI-RS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a TRS, or an audible reference signal (SRS), or any other reference signals used in wireless communications. QCL assumptions can vary with different beam widths. A QCL assumption between a DMRS and a TRS can be different depending on the completion of a QCL assumption between narrow and wide beams. The same QCL assumption or different QCL assumptions can be made between narrow and wide bundles. The difference in path delay spread and the difference in Doppler spread between a narrow beam and a wide beam can affect channel estimation performance. The QCL assumptions established between reference signals for wide or narrow beam communications are very useful in channel estimation.
[0071] [0071] Figure 4 is a 400 diagram showing QCL assumptions between NR reference signals when wide beams are used for communications. For example, a TRS, an SS block or a broadcast DMRS can be transmitted using a wide beam. Figure 4 shows QCL configurations between an SS 402 block, a DMRS 404, a CSI-RS 406, a TRS 408, a CSI-RS 410 and a DMRS 412. DMRS 404 is for a broadcast channel. That is, DMRS 404 is a DMRS used for demodulation of a system information block (SIB), radio resource control signaling (RRC), pagination, etc. before a TRS is configured. The CSI-RS 406 is transmitted for beam formation. The CSI-RS 410 is transmitted for channel estimation. DMRS 412 is used for demodulation of signals transmitted on a unicast channel. An arrow starting from a first reference signal (for example, the SS 402 block) and ending at a second reference signal (for example, DMRS 404) indicates that the second reference signal has a QCL relationship with the first reference signal in relation to one or more QCL parameters. The one or more QCL parameters (for example, a mean delay, a Doppler shift, a delay spread, and a space RX) are shown in the arrow, indicating that the one or more QCL parameters required by the second reference signal can be derived using the first reference signal.
[0072] [0072] As shown, DMRS 404 is configured to have a QCL relationship with the SS 402 block. The mean delay, Doppler shift, delay spread, and spatial RX for DMRS 404 can be derived based on the block of SS 402. Similarly, CSI-RS 406 and TRS 408 have a QCL relationship with the SS 402 block, respectively. An average delay, a Doppler shift, and an approximate space RX required by the CSI-RS 406 can be derived based on the SS 402 block. An average delay, a Doppler shift and a space RX required by the TRS 408 can be derived of the SS 402 block. The CSI-RS 410 has a QCL relationship with the CSI-RS 406 and TRS 408, respectively. The CSI-RS 410 can be received using a spatial X-ray derived from the CSI-RS 406, and uses a delay average, a Doppler shift, and a spread delay of the TRS 408. DMRS 412 has a QCL relationship with TRS 408 and CSI-RS 410, respectively. DMRS 412 can be received using a space RX derived from CSI-RS 410. DMRS 412 can also receive a delay average, a Doppler shift, a Doppler spread and a delay spread derived based on the TRS 408.
[0073] [0073] Figure 5 is a diagram 500 showing QCL assumptions between NR reference signals when narrow beams are used for communications. Figure 5 shows QCL configurations between an SS 502 block, a DMRS 504, a CSI-RS 506, a TRS 508, a CSI-RS 510 and a DMRS 512. Similar to Figure 4, DMRS 504 is for demodulation of signals on a broadcast channel, for example, a physical broadcast channel (PBCH), which are transmitted before a TRS is configured. The CSI-RS 506 is transmitted for beam formation. The CSI-RS 510 is transmitted for channel estimation. DMRS 512 is used for demodulation of signals transmitted on a unicast channel. An arrow starting from a first reference signal and ending at a second reference signal indicates that the second reference signal has a QCL relationship with the first reference signal in relation to one or more QCL parameters. The one or more QCL parameters shown in the arrow indicate that the one or more QCL parameters required by the second reference signal can be derived using the first reference signal. Figure 5 shows that the reference signals have QCL configurations similar to those illustrated in Figure 4, except for the TRSs. In Figure 5, TRS 508 has a QCL relationship with the SS 502 block and CSI-RS 506, respectively. The TRS 508 can be received using a derived Doppler shift based on the SS 502 block, and can be received using a delay average and a derived spatial RX based on the CSI-RS 506. Data transmission can employ multiple narrow beams and multiple narrow, and multiple narrow TRS bundles may be required for tracking. To support both scenarios, the configuration of TRSs and their QCL or membership assumptions must be flexible. It would be appreciated to have flexible TRS configurations.
[0074] [0074] Depending on a currently used beamwidth, and depending on how many narrow beam link pairs a UE is communicating with, multiple transmissions of TRSs may be required to support tracking for beam formation. It may not be practical to transmit fixed periodic TRSs for each beam width and each narrow beam direction. TRS transmissions and configurations need to be UE specific and configurable.
[0075] [0075] Thus, it would be appreciated that transmissions and TRS configurations are specific and configurable for UE. In the current 3GPP NR, however, a new type of full signal used as a TRS may need to be defined. Various signal patterns, transmission time offsets and periodicity may need to be designed to cover various tracking targets, deployment scenarios and beam formation. Since TRS transmissions may collide with transmissions from other signals, for example, from SSs, DMRSs, data, etc., rules may also need to be defined to deal with collisions and rate matching.
[0076] [0076] To reduce the complexity caused by the design of a new complete set of TRSs and associated rules, modalities of the present disclosure form a TRS by aggregating several existing CSI-RSs, for example, CSI-RSs from a port. In other words, a TRS can be configured according to multiple CSI-RS configurations, for example, single port CSI-RS configurations. A CSI-RS on a port refers to a CSI-RS that is transmitted via an antenna port. A TRS configuration can be constructed by adding multiple CSI-RS configurations, for example, CSI-RS configurations of a port. A TRS configuration can also generally be referred to as a CSI-RS configuration in this disclosure, since it includes configurations for transmitting CSI-RSs. According to the TRS configuration, a TRS signal can be transmitted via a single antenna port on resources that have been defined according to the multiple CSI-RS configurations of a port to transmit CSI-RSs. The resulting aggregate TRS (referred to as a new TRS) can be thought of as a new door TRS that serves one or more specific tracking features. It can be assumed that the new TRS has an approximate co-location (QCL) ratio with an NR SS burst with respect to some parameters. For example, it can be assumed that the new TRS (of a door) is almost co-located with the NR-SS burst in terms of a frequency deviation and an approximate time / Doppler spread. It can also be assumed that the new TRS is almost co-located with certain DMRS ports for the UE to perform channel estimation and data demodulation, for example, in terms of thin time, spread delay and Doppler spread. By using aggregation of CSI-RS configurations from a port to transmit TRSs, TRS density requirements can be configured and met flexibly. Various CSI-RS design features can also be reused, for example, flexible periodicity, rate matching, collision rules and multiple configurations can be reused. What needs to be designed can include aggregation rules, aggregation signaling, and QCL assumptions and TRS configuration signaling. The complexities of design and implementation can be greatly reduced.
[0077] [0077] CSI-RS configurations can specify resources over a period of time, for example, in two consecutive partitions, or per resource block (RB), to transmit CSI-RSs. A CSI-RS configuration that specifies resources for transmitting CSI-RSs through a single antenna port can be referred to as a single port CSI-RS configuration throughout the disclosure. An RB can include a plurality of resource elements, and each resource element occupies an OFDM symbol in the time domain and a subcarrier in the frequency domain. An RB can consist of 12 consecutive subcarriers for a partition (for example, 0.5 ms) in the time domain. An example partition can include 14 OFDM symbols. Various configurations of an RB or partition can be used in the modalities of the present disclosure.
[0078] [0078] Figure 6 illustrates a diagram of an RB 600 modality. Figure 6 shows one port CSI-RS configurations for time domain code division multiplexing (CDM) CSI-RSs. A CDM CSI-RS refers to a CSI-RS for communications using CDM. The RB 600 includes 14 OFDM symbols in the time domain and 12 subcarriers in the frequency domain. Each square represents a feature element. "ci", i = 0, 1, ... 19, represents a CSI-RS configuration of a port. A resource element marked with ci indicates that the resource element is configured to transmit CSI-RSs according to an i CSI-RS configuration of a corresponding port. For example, the resource elements (in the OFDM 5-6 and subcarrier 9 symbols) marked with c0 are configured to transmit CSI-RSs through an antenna port according to a 0 CSI-RS configuration of a port. The resource elements (in the OFDM 5-6 and subcarrier 3 symbols) marked with c10 are configured to transmit CSI-RSs through an antenna port according to a 10 port CSI-RS configuration. The resource elements (in the OFDM 2-3 and subcarrier 5 symbols) marked with c12 are configured to transmit CSI-RSs via an antenna port in accordance with a 12 port CSI-RS configuration. Figure 6 shows 20 different CSI-RS configurations for a port (ie, c0-c19 configurations). Each CSI-RS configuration on a port specifies two resource elements per RB to transmit CSI-RSs per antenna port.
[0079] [0079] Figure 7 illustrates a diagram of another RB modality
[0080] [0080] There are several CSI-RS configurations (for example, CSI-RS configurations for a port) that have been defined and new CSI-RS configurations that must be defined. These CSI-RS configurations can be used to build TRS configurations according to which TRSs are transmitted. In some embodiments, a TRS configuration can be constructed using multiple port CSI-RS configurations. Multiple port CSI-RS configurations can be for CDM or non-CDM CSI-RS transmission. That is, the TRS configuration is constructed by aggregating the multiple CSI-RS configurations of a port. This means that, according to the constructed TRS configuration, a reference signal for tracking can be transmitted in CSI-RS resources configured for CSI-RS transmission according to the multiple CSI-RS configurations of a port. For example, the CSI-RS configurations of a c0, c2 and c4 port illustrated in Figure 6 can be aggregated to form a TRS configuration. According to this formed TRS configuration, TRSs can be transmitted in resource elements marked by c0, c2 and c4 by RB in Figure 6. A TRS configuration that is built by aggregating multiple CSI-RS configurations from a port can be called a door's TRS configuration. TRSs configured according to a port's TRS configuration will be transmitted through an antenna port. Thus, TRSs can be referred to as single port TRSs.
[0081] [0081] In some modalities, rules can be defined to specify the aggregation of different CSI-RS configurations of a port. For example, an aggregation rule may require that resource elements to carry TRSs over RB have certain distances (for example, maximum or minimum distances) in the time domain, or in the frequency domain, or both. In another example, an aggregation rule can specify whether or not the elements of the resource should be evenly spaced in the time domain, or in the frequency domain, or both. Based on the aggregation rule, different CSI-RS configurations for a port can be selected and aggregated to form different TRS configurations.
[0082] [0082] A TRS configuration can indicate CSI-RS configurations of a port that are used to form the TRS configuration. Each of a port's CSI-RS configurations can be assigned a configuration number, such as c0, c1, ..., cn, as shown in Figure 6 or Figure
[0083] [0083] A TRS configuration can additionally include a QCL assumption or QCL configuration. The QCL configuration may indicate that a TRS transmitted in accordance with the TRS configuration has a QCL relationship with another reference signal, or with another reference signal on a given antenna port, in terms of a QCL parameter that is associated with the QCL configuration and the QCL interface. In one example, the QCL configuration can indicate a reference signal with which the TRS has a QCL relationship, and one or more QCL parameters associated with the QCL configuration and relationship. As shown in Figure 4 and Figure 5, a TRS can have a QCL relationship with an SS block or a CSI-RS. In one example, the QCL configuration may indicate that the TRS has a QCL relationship with an SS block of number k in terms of a Doppler shift, and that the TRS has a QCL relationship with a CSI-RS in terms of a delay average. In this case, the QCL configuration can indicate the SS block of number k, with which the TRS has a QCL relationship, and the Doppler shift, which is the QCL parameter associated with the QCL configuration and the QCL relationship. The QCL configuration can also indicate the CSI-RS and the associated QCL parameter, that is, the average delay. A QCL configuration can additionally include information about a port, for example, a DMRS port, or a CSI-RS port, associated with a QCL interface.
[0084] [0084] A TRS configuration can also include other parameters that can be used to configure transmit TRSs, such as bandwidth to transmit TRSs, periodicity to transmit TRSs, subcarrier spacing, a length of a TRS (for example, a burst TRS), or parameters as described in relation to Figure 2. The bandwidth for transmitting a TRS can include a full band, a partial band, or an EU programmed data transmission bandwidth.
[0085] [0085] A TRS configuration can be signaled to UEs, for example, in RRC signaling or in a broadcast channel. For example, a TRS configuration including a QCL assumption, which additionally includes the related QCL parameters and associated ports, for example, a DMRS port, or a CSI-RS port for measuring CSI, can be signaled from a network for an UE. In the case of multiple TRS configurations configured for a UE, the multiple TRS configurations can be signaled for the UE. A UE can receive signaling from a TRS configuration, obtain a QCL assumption and association between the QCL assumption and a TRS signal, trigger one or more QCL parameters from the associated TRS signal, and apply to the reception of a port Corresponding DMRS or CSI-RS.
[0086] [0086] Figure 8 illustrates a diagram of an RB 800 modality. The RB 800 is similar to the RB 600 in Figure 6. Figure 8 shows a TRS configuration formed by aggregating multiple CSI-RS configurations from one port to CSI Time domain CDM RSs. Using LTE port time domain CDM CSI-RS standards as an example, a TRS configuration can be constructed by adding 4 port CSI-RS configurations shown in Figure 6. In this example, the TRS configuration it is built using c0, c2, c10 and c14 port CSI-RS configurations. TRSs can then be transmitted according to port CSI-RS configurations c0, c2, c10 and c14 on resources specified by those port CSI-RS configurations.
[0087] [0087] A TRS configuration can be formed by adding any time domain CDM CSI-RS configurations of a port, for example, as shown in Figure 6, as long as one or more predefined rules are fulfilled. Several rules can be defined. In some embodiments, the aggregation of 4 CSI-RS configurations from one port to CDM CSI-RSs in the time domain to build a TRS configuration can follow the following rules (ie Rules 1-8). Rule 1: TRS signals in an OFDM symbol must be evenly spaced in the frequency domain. For example, resource elements c2, c8, c14 and c17 can be used to transmit reference signals for tracking. They are evenly spaced in the frequency domain. Rule 2: Adjacent OFDM symbols carrying TRSs must comply with the following rules:
[0088] [0088] The CSI-RS of a non-CDM port can be defined in 3GPP NR, in order to facilitate beam management and time / frequency tracking. In this case, the number of REs per RB (or in two consecutive partitions) and per OFDM configured to transmit CSI-RSs can be equal to or greater than 3. For example, as shown in Figure 7, the CSI-RS setting 0 of a port specifies 3 resource elements (in the OFDM symbol 5 and subcarrier 3, 7 and 11) per RB to transmit CSI-RSs per antenna port. In some embodiments, a TRS configuration can be constructed by adding two non-CDM CSI-RS configurations to a port.
[0089] [0089] Figure 9 illustrates a diagram of a RB 900 modality. RB 900 is similar to RB 700 in Figure 7. Figure 9 shows a TRS configuration formed by aggregating two non-CDM CSI-RS configurations. a door. In this example, the non-CSI-RS CDM configurations of a port, as shown in Figure 7, are aggregated to form a TRS configuration, and TRSs can be transmitted according to the TRS configuration. That is, the TRSs can be carried on resource elements 912-920 which are specified by the non-CDM CSI-RS configurations c2 and c8 of a port.
[0090] [0090] A TRS configuration can be formed by adding any two non-CDM CSI-RS configurations of a port, for example, as shown in Figure 7, as long as predefined rules can be fulfilled. In some embodiments, the aggregation of two CSI-RS configurations from a non-CDM port to build a TRS configuration may follow the following rules (ie Rules 1 through 8). Rule 1: TRS signals in an OFDM symbol are evenly spaced in frequency domain. This must be accomplished naturally by designing one port CSI-RS configurations, not CDM. If frequency-dense TRSs are needed, more CSI-RS non-CDM configurations for a port can be aggregated across the frequency domain as long as rule 1 is met. That is, more than two CSI-RS non-CDM configurations of a port can be aggregated to build the TRS configuration, as long as rule 1 is fulfilled.
[0091] [0091] In some embodiments, a UE can receive TRSs configured using multiple sets of aggregated CSI-RS configurations from a port to track different parameters. Each of the multiple sets of aggregated CSI-RS configurations of a port can be used to form a TRS configuration of a port, thus forming multiple TRS configurations. The UE can be configured to receive TRSs configured according to one or more of the multiple TRS configuration.
[0092] [0092] Figure 10 illustrates two sets of aggregated CSI-RS configurations of a port that are used to configure TRSs. A UE can be configured with the two sets of aggregated CSI-RS configurations of a port to receive TRSs. Figure 10 illustrates a first set of 1010 CSI-RS configuration of an aggregate port and a second set of CSI-RS configuration of an aggregate port 1050. The first set of CSI-RS of an aggregate port 1010 can be used to build a first TRS configuration, and the second CSI-RS 1050 aggregate configuration set of a port can be used to build a second TRS configuration.
[0093] [0093] As shown in Figure 10, the first CSI-RS configuration set for an aggregate port 1010 includes 4 non-CDM CSI-RS configurations for a port, that is, c1, c5, c9 and c13. TRSs configured according to the first set of aggregated CSI-RS 1010 configurations of a port (ie, the first TRS configuration) will be transmitted in resource elements marked with c1, c5, c9 and c13. The transmission periodicity of the TRSs configured according to the first TRS configuration can be set to be 20ms. The first TRS configuration can include a QCL assumption. The QCL assumption can specify that a TRS transmitted according to the first TRS configuration has a QCL relationship with an SS k block with respect to an approximate time / Doppler spread. The QCL assumption can also specify that the TRS signal has a QCL relationship with a DMRS m port with respect to a fine frequency offset, and a Doppler time and spread.
[0094] [0094] The second set of aggregate CSI-RS 1050 configuration of a port includes two (2) non-CDM CSI-RS configurations of a port, that is, c2 and c8. TRSs configured according to the second set of aggregate CSI-RS configurations of a 1050 port (that is, the second TRS configuration) will be transmitted in resource elements marked with c2 and c8. The transmission periodicity of the TRSs configured according to the second TRS configuration can be set to be 160ms. The second TRS configuration may include a QCL assumption, which specifies that a TRS transmitted according to the second TRS configuration has a QCL relationship with an SS k block with respect to a delay spread. The QCL assumption can also specify that the TRS has a QCL relationship with a DMRS m port with respect to a thin delay spread.
[0095] [0095] Figure 11 illustrates a flow chart of an 1100 method modality for wireless communications. In this example, a TRS configuration is constructed by aggregating CSI-RS configurations from a port. As shown, in step 1102, an UE 1150 receives one or more SS blocks from an 1152 network node. The UE can acquire approximate time and frequency synchronizations based on the one or more SS blocks received.
[0096] [0096] In step 1104, network node 1152 signals UE 1150 with one or more TRS configurations, for example, through RRC signaling or broadcast messages. A TRS configuration can be constructed by adding multiple CSI-RS configurations of a port, for example, as shown in Figures 8 to 10. The TRS configuration can include aggregation details, a QCL assumption, and a periodicity of transmission of TRS. Aggregation details can indicate CSI-RS configurations for a port that are aggregated to build the TRS configuration. For example, aggregation details include identifiers (for example, c0, c1, etc.) identifying a port's CSI-RS settings. An identifier can also be a number (for example, 0, 1, 2, etc.) assigned to a port's CSI-RS configuration. An identifier identifies a port CSI-RS configuration from a plurality of port CSI-RS configurations. Aggregation details can also indicate resource elements per RB that are specified by a port's CSI-RS settings.
[0097] [0097] In step 1106, UE 1150 acquires one or more TRS configurations. The UE 1150 can receive and decode the broadcast or RRC signaling message using approximate time and frequency synchronizations acquired based on the SS blocks, acquire one or more TRS configurations, and prepare to receive TRSs accordingly. with one or more TRS configurations.
[0098] [0098] In step 1108, network node 1152 can transmit, for example, periodically, TRSs according to one or more TRS configurations. A TRS can be transmitted according to a TRS configuration through a single antenna port. A first TRS transmitted via a first antenna port can have the same TRS configuration or different TRS configurations in relation to a second TRS transmitted via a second antenna port.
[0099] [0099] In step 1110, UE 1150 can perform another synchronization estimate, and other parameter estimates for communications with network node 1152 using the TRSs transmitted periodically by the network node
[0100] [0100] In step 1112, network node 1152 can transmit data (for example, a physical downlink shared channel (PDSCH). Data can be demodulated using QCL assumptions specified in a TRS configuration or more. For example , the data can be demodulated by a UE according to a demodulation parameter that is derived based on a TRS that is transmitted according to a TRS configuration.
[0101] [0101] In step 1114, UE 1150 can perform channel estimation (for communications between UE 1150 and network node 1152) and data demodulation (for example, for data received by UE 1150) using one or more assumptions QCL values specified in a TRS configuration.
[0102] [0102] In step 1116, network node 1152 can signal, for UE 1150, the expiration time of a TRS configuration that is transmitted by network node 1152. For example, network node 1152 can signal, for example example, through RRC signaling, that a current TRS configuration will expire within a certain period of time.
[0103] [0103] In step 1118, network node 1152 may stop sending TRSs (for example, periodic TRSs) to the UE 1150.
[0104] [0104] In step 1120, the UE 1150 can return to the approximate synchronization derived from the SS blocks.
[0105] [0105] In step 1122, UE 1150 can perform channel estimation and signal demodulation only with the approximate synchronization derived from the SS blocks, in the absence of TRS configuration and transmission.
[0106] [0106] Figure 12 illustrates a flow chart of a method method 1200 for wireless communications. Method 1200 can be indicative of operations performed on a network node, such as a network controller or a base station. As shown, in step 1202, method 1200 transmits a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS). The first CSI-RS configuration can specify a first set of CSI-RS resources on two consecutive partitions to transmit the first RS. The first set of CSI-RS features can include a plurality of single port CSI-RS features configured according to the first CSI-RS configuration. The first CSI-RS configuration can also specify a first near-co-location (QCL) configuration, including a first set of QCL parameters. The first QCL configuration indicates that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters. In some embodiments, method 1200 can also transmit a second RS for tracking according to a second CSI-RS configuration. The second CSI-RS configuration may be different from the first CSI-RS configuration. The second CSI-RS configuration can specify a second set of CSI-RS resources on two consecutive partitions to transmit the second RS, where the second set of CSI-RS resources includes a plurality of single-port CSI-RS resources configured according to the second CSI-RS configuration. The second CSI-RS configuration can specify a second QCL configuration including a second set of QCL parameters, where the second QCL configuration indicates that the second RS has a QCL relationship with a second DMRS in relation to the second parameter set of QCL.
[0107] [0107] Figure 13 illustrates a flow chart of a 1300 method modality for wireless communications. The 1300 method can be indicative of operations performed in a UE. As shown, in step 1302, method 1300 receives a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS). The first CSI-RS configuration can specify a first set of CSI-RS features on two consecutive partitions. The first set of CSI-RS features includes a plurality of single port CSI-RS features configured according to the first CSI-RS configuration.
[0108] [0108] Figure 14 illustrates a flow chart of a method modality 1400 for wireless communications. Method 1400 can be indicative of operations performed on a network node, such as a network controller, or a base station. As shown, in step 1402, method 1400 transmits a first configuration of the tracking reference signal (TRS). The first TRS configuration can specify a first TRS resource in a period of time, for example, in two consecutive partitions, or per physical resource block (PRB), to transmit a burst of TRS. The first TRS resource includes a first plurality of channel state information reference signal resources (CSI-RS), and each of the first plurality of CSI-RS resources is configured to transmit CSI-RSs over an antenna port. according to a corresponding CSI-RS configuration. The first TRS configuration can specify a first nearly co-location (QCL) configuration that includes a first QCL parameter, where the first QCL configuration indicates that a TRS transmitted in accordance with the first TRS configuration has a QCL relationship with a reference signal in relation to the first QCL parameter. In step 1404, method 1400 can transmit a second TRS configuration. The second TRS configuration can specify a second TRS resource in a period of time, for example, in two consecutive partitions, or per PRB, to transmit a burst of TRS. The second TRS resource includes a second plurality of CSI-RS resources, and each of the second plurality of CSI-RS resources is configured to transmit CSI-RSs over an antenna port according to a corresponding CSI-RS configuration. The second TRS configuration may specify a second QCL configuration that includes a second QCL parameter, where the second QCL configuration indicates that a TRS transmitted in accordance with the second TRS configuration has a QCL relationship with a reference signal in relation to to the second QCL parameter. Steps 1402 and 1404 can be performed at the same time or at different times. In step 1406, method 1400 transmits a first TRS to a UE according to the first TRS configuration, and transmits a second TRS to the UE according to the second TRS configuration.
[0109] [0109] One embodiment of the present disclosure provides a method which includes receiving, by a user equipment (UE), a door tracking reference signal (TRS) comprising an aggregation of a plurality of information reference signal configurations. of channel status (CSI-RS) of a port.
[0110] [0110] Optionally, in any of the preceding aspects, the method additionally includes: understanding to receive, by the UE, assumptions of near co-location (QCL) of the TRS.
[0111] [0111] Optionally, in any of the preceding aspects, the QCL assumptions include: approximate QCL assumptions in relation to the QCL parameters for a synchronization signal to assist in receiving the TRS; and fine QCL assumptions regarding QCL parameters for associated DMRS port (s) and / or CSI-RS port (s) to assist in estimating the pilot channel or / and demodulating data.
[0112] [0112] Optionally, in any of the preceding aspects, the method additionally includes: assuming, by the UE, only the QCL assumptions that are signaled with a specific TRS configuration.
[0113] [0113] Optionally, in any of the preceding aspects, the method additionally includes: configuring the UE with multiple sets of TRS targeting different QCL parameters or different DMRS port / s and / or port / s CSI-RS.
[0114] [0114] Optionally, in any of the foregoing aspects, a transmission bandwidth of the TRS being one of full band, partial band, or within a data transmission bandwidth programmed by the EU.
[0115] [0115] One embodiment of the present disclosure also provides user equipment (UE) which includes: a receiver; a non-transitory memory store comprising instructions; and one or more processors in communication with the receiver and memory storage. The one or more processors execute the instructions to receive a port tracking reference signal (TRS), which comprises an aggregation of a plurality of port channel state reference signal configurations (CSI-RS) .
[0116] [0116] Optionally, in any of the preceding aspects, the one or more processors execute the instructions to receive the TRS quasi-co-location (QCL) assumptions.
[0117] [0117] Optionally, in any of the preceding aspects, the QCL assumptions include: approximate QCL assumptions in relation to the QCL parameters for a synchronization signal to assist in receiving the TRS; and fine QCL assumptions regarding the QCL parameters for associated DMRS port (s) and / or CSI-RS port (s) to assist in estimating the pilot channel or / and demodulating the data.
[0118] [0118] Optionally, in any of the preceding aspects, the one or more processors execute the instructions to assume only the QCL assumptions that are signaled with a specific TRS configuration.
[0119] [0119] Optionally, in any of the preceding aspects, the one or more processors execute the instructions to configure the UE with multiple sets of TRS targeting different parameters of QCL or DMRS port (s) and CSRS-RS port (s).
[0120] [0120] Optionally, in any of the foregoing aspects, a TRS transmission bandwidth is a full band, partial band, or within an EU programmed data transmission bandwidth.
[0121] [0121] Figure 15 illustrates a diagram of a 1500 mode communication system. In general, the 1500 system enables multiple wireless or wired users to transmit and receive data and other content. The 1500 system can implement one or more methods of channel access, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA ), Single carrier FDMA (SC -FDMA) or non-orthogonal multiple access (NOMA), etc.
[0122] [0122] In this example, the communication system 1500 includes electronic devices (ED) 1510a-1510c, radio access networks (RANs) 1520a-1520b, a main network 1530, a public switched telephone network (PSTN) 1540, the Internet 1550, and other networks 1560. Although certain numbers of these components or elements are shown in Figure 15, any number of these components or elements can be included in the 1500 system.
[0123] [0123] EDs 1510a-1510c are configured to operate and / or communicate on the 1500 system. For example, EDs 1510a-1510c are configured to transmit and / or receive via wireless or wired communication channels. Each ED 1510a-1510c represents any suitable end user device and may include (or may be referred to as) devices such as user equipment / device (UE), wireless transmit / receive unit (WTRU), mobile station, fixed or mobile subscriber, cell phone, personal digital assistant (PDA), smart phone, laptop, computer, touch panel (touchpad), wireless sensor or consumer electronic device.
[0124] [0124] RANs 1520a-1520b here include base stations 1570-1570b, respectively. Each base station 1570a-1570b is configured to wirelessly interface with one or more of the EDs 1510a-1510c to allow access to the main network 1530, PSTN 1540, Internet 1550 and / or other 1560 networks. base stations 1570a-1570b can include (or be) one or more of several known devices, such as a base transceiver station (BTS), a transmit-receive point (TRP), a gNB consisting of a CU and one or multiple DUs / TRPs, a Node-B (NodeB), an evolved Node B (eNodeB), a Home NodeB, a Home eNodeB, a site controller, an access point (AP), or a wireless router. The RANs
[0125] [0125] In the embodiment shown in Figure 15, base station 1570a is part of RAN 1520a, which can include other base stations, elements and / or devices. In addition, base station 1570b is part of RAN 1520b, which may include other base stations, elements and / or devices. Each 1570a-1570b base station operates to transmit and / or receive wireless signals within a specific region or geographic area, sometimes referred to as a "cell". In some embodiments, multiple input multiple output (MIMO) technology can be employed by having multiple transceivers for each cell.
[0126] [0126] Base stations 1570a-1570b communicate with one or more of the EDs 1510a-1510c through one or more overhead 1590 interfaces using wireless communication links. The 1590 overhead interfaces can use any suitable radio access technology.
[0127] [0127] It is considered that the 1500 system can use multiple channel access functionality, including schemes as described above. In particular modalities, the base stations and EDs implement 5G NR, LTE, LTE-A and / or LTE-B. Certainly, other multiple access schemes and wireless protocols can be used.
[0128] [0128] RANs 1520a-1520b are in communication with the main network 1530 to provide EDs 1510a-1510c with voice, data, application, Voice over Internet Protocol (VoIP) or other services. Understandably, RANs 1520a-1520b and / or the main network 1530 can be in direct or indirect communication with one or more other RANs (not shown). The main network 1530 can also serve as gateway access to other networks (such as PSTN 1540, Internet 1550 and other networks 1560). In addition, some or all EDs 1510a-1510c may include functionality to communicate with different wireless networks over different wireless links using different wireless technologies and / or protocols. Instead of wireless communication (or beyond), EDs can communicate via wired communication channels with a service provider or switch (not shown) and with the Internet 1550.
[0129] [0129] Although Figure 15 illustrates an example of a communication system, several changes can be made in Figure 15. For example, the 1500 communication system can include any number of EDs, base stations, networks or other components in any configuration. proper.
[0130] [0130] Figures 16A and 16B illustrate exemplary devices that can implement the methods and teachings according to this disclosure. In particular, Figure 16A illustrates an exemplary ED 1610, and Figure 16B illustrates an exemplary base station 1670. These components can be used in the 1500 system or any other suitable system.
[0131] [0131] As shown in Figure 16A, ED 1610 includes at least one processing unit 1600. Processing unit 1600 implements several processing operations of ED 1610. For example, processing unit 1600 could perform signal encoding, processing data, power control, input / output processing or any other functionality that enables the ED 1610 to operate on the system
[0132] [0132] ED 1610 also includes at least one transceiver 1602. Transceiver 1602 is configured to modulate data or other content for transmission by at least one antenna or NIC (Network Interface Controller) 1604, but typically more than one antenna for beam forming purposes. Transceiver 1602 is also configured to demodulate data or other content received by at least one antenna 1604. Each transceiver 1602 includes any structure suitable for generating signals for wireless or wired transmission and / or processing signals received wirelessly or wired. Each antenna 1604 includes any structure suitable for transmitting and / or receiving wireless or wired signals. One or more transceivers 1602 can be used on ED 1610 and one or multiple antennas 1604 can be used on ED 1610. Although shown as a single functional unit, a transceiver 1602 could also be implemented using at least one transmitter and at least one separate receiver .
[0133] [0133] ED 1610 additionally includes one or more input / output devices 1606 or interfaces (such as a wired interface for the Internet 1550). Input / output devices 1606 facilitate interaction with a user or other devices (network communications) on the network. Each 1606 input / output device includes any structure suitable for providing information to or receiving / providing information from a user, such as a speaker, microphone, numeric keypad, keyboard, monitor or touchscreen, including communications. network interface.
[0134] [0134] In addition, ED 1610 includes at least one 1608 memory. 1608 memory stores instructions and data used, generated or collected by ED 1610. For example, 1608 memory could store software or firmware instructions executed by (s) 1600 processing unit (s) and data used to reduce or eliminate interference with incoming signals. Each memory 1608 includes any suitable volatile and / or non-volatile device (s) for storage and retrieval. Any suitable type of memory can be used, such as random access memory (RAM), read-only memory (ROM), hard disk, optical disk, subscriber identity module (SIM) card, flash memory card, memory card secure digital memory (SD), and the like.
[0135] [0135] As shown in Figure 16B, the base station (or CU / DU / TRP with RRH) 1670 includes at least one 1650 processing unit, at least one 1652 transceiver, which includes functionality for a transmitter and receiver, a or more 1656 antennas, at least one 1658 memory, and one or more 1666 input / output devices or interfaces. A programmer, who would be understood by a person skilled in the art, is coupled to the 1650 processing unit. The programmer can be included within base station 1670 or operated separately from it. The processing unit 1650 implements various processing operations of the 1670 base station, such as signal encoding, data processing, power control, input / output processing, or any other functionality. The 1650 processing unit can also support the methods and teachings described in more detail above. Each 1650 processing unit includes any suitable computing or processing device configured to perform one or more operations. Each 1650 processing unit could, for example, include a microprocessor, microcontroller, digital signal processor, field programmable port arrangement, or application specific integrated circuit.
[0136] [0136] Each 1652 transceiver includes any structure suitable for generating signals for wireless or wired transmission to one or more EDs or other devices. Each 1652 transceiver additionally includes any structure suitable for processing received wireless or wired signals from one or more EDs or other devices. Although shown combined as a 1652 transceiver, a transmitter and a receiver can be separate components. Each 1656 antenna includes any structure suitable for wirelessly transmitting and / or receiving or transmitting signals. Although a common 1656 antenna is shown here as being coupled to the 1652 transceiver, one or more 1656 antennas can be coupled to the 1652 transceiver (s), allowing separate 1656 antennas to be coupled to the transmitter and receiver if equipped as separate components . Each 1658 memory includes any suitable volatile (and) and / or non-volatile (s) device (s) for storage and retrieval. Each 1666 input / output device facilitates interaction with a user or other devices (network communications) on the network. Each 1666 input / output device includes any structure suitable for providing information to a user or receiving / providing information from the user, including network interface communications.
[0137] [0137] Figure 17 is a block diagram of a 1700 computing system that can be used to implement the devices and methods disclosed in this document. For example, the computing system can be any UE entity, access network (AN), mobility management (MM), session management (SM), user plan gateway (UPGW), and / or access layer (AT). Specific devices may use all components shown or only a subset of the components, and levels of integration may vary from device to device. In addition, a device can contain multiple instances of a component, such as multiple processing units, processors, memories, transmitters, receivers, etc. The 1700 computing system includes a 1702 processing unit. The processing unit includes a 1714 central processing unit (CPU), 1708 memory, and can additionally include a 1704 mass storage device, a 1710 video adapter and an interface 1712 I / O connected to a bus
[0138] [0138] The 1720 bus can be one or more of any type of diverse bus architectures including a memory bus or memory controller, a peripheral bus, or a video bus. The 1714 CPU can comprise any type of electronic data processor. Memory 1708 can comprise any type of non-transitory system memory, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), read-only memory (ROM), or a combination the same. In one embodiment, memory 1708 may include ROM for use at startup, and DRAM for storing program and data for use during program execution.
[0139] [0139] Mass storage 1704 can comprise any type of non-transitory storage device configured to store data, programs and other information and make data, programs and other information accessible via the 1720 bus. Mass storage 1704 can comprise , for example, one or more of a solid state drive, hard disk drive, magnetic disk drive, or optical disk drive.
[0140] [0140] The 1710 video adapter and the 1712 I / O interface provide interfaces for attaching external input and output devices to the processing unit 1702. As illustrated, examples of input and output devices include a 1718 monitor attached to the video adapter 1710 and a 1716 mouse / keyboard / printer coupled to the 1712 I / O interface. Other devices can be coupled to the processing unit 1702, and more or less interface cards can be used. For example, a serial interface such as the Universal Serial Bus (USB) (not shown) can be used to provide an interface for an external device.
[0141] [0141] Processing unit 1702 also includes one or more network interfaces 1706, which may comprise wired links, such as an Ethernet cable, and / or wireless links to access different nodes or networks. Network interfaces 1706 allow processing unit 1702 to communicate with remote units over networks. For example, 1706 network interfaces can provide wireless communication through one or more transmitters / transmit antennas and one or more receivers / receive antennas. In one embodiment, processing unit 1702 is coupled to a 1722 local area network or to a wide area network for data processing and communications with remote devices, such as other processing units, the Internet or remote storage facilities.
[0142] [0142] It should be noted that one or more steps of the method modality provided in this document can be performed by corresponding units or modules. For example, a signal can be transmitted by a transmitting unit or a transmitting module. A signal can be received by a receiving unit or a receiving module. A signal can be processed by a processing unit or a processing module. Other steps can be performed by a configuration unit / module, an aggregation unit / module, a signaling unit / module, a specification unit / module, a demodulation unit / module, a tracking unit / module, a unit / tracking module, a sync unit / module, a channel estimation unit / module and / or an assumption unit / module. The respective units / modules can be hardware, software or a combination of them. For example, one or more of the units / modules can be an integrated circuit, such as field programmable port arrangements (FPGAs) or application-specific integrated circuits (ASICs).
[0143] [0143] For example, in one embodiment, a user equipment (UE) is disclosed that includes a non-transitory memory storage medium, including instructions and one or more processor means in communication with the memory storage means, in that the one or more processors execute the instructions to receive a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS), the first CSI-RS configuration specifying a first set of CSI-RS resources on two consecutive partitions to bear RSs, the first set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the first CSI-RS configuration and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters. The first QCL configuration indicates that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters.
[0144] [0144] Although this disclosure has been described with reference to illustrative modalities, this description is not intended to be interpreted in a limiting sense. Various modifications and combinations of the illustrative modalities, as well as other disclosure modalities, will be evident to persons skilled in the art upon reference to the description. Therefore, the attached claims are intended to cover these modifications or modalities.

权利要求:
Claims (32)
[1]
1. Method, CHARACTERIZED by: transmitting (1202) a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS), the first CSI-RS configuration specifying: a first set of CSI-RS resources on two consecutive partitions to transmit the first RS, the first set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the first CSI- LOL; and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters, the first QCL configuration indicating that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters.
[2]
2. Method, according to claim 1, CHARACTERIZED by the fact that the first set of CSI-RS features comprises four CSI-RS features of a door, the four CSI-RS features of a door being evenly spaced across a frequency domain.
[3]
3. Method according to claim 1 or 2, CHARACTERIZED by the fact that the first QCL configuration comprises a second set of QCL parameters, the first QCL configuration indicating that the first DMRS has a QCL relationship with a second downlink reference signal relative to the second set of QCL parameters.
[4]
Method according to any one of claims 1 to 3, CHARACTERIZED by the fact that the second downlink reference signal comprises a second RS for tracking.
[5]
Method according to any one of claims 1 to 3, CHARACTERIZED by the fact that the second downlink reference signal comprises a synchronization signal (SS) or a physical broadcast channel block (PBCH).
[6]
6. Method according to any one of claims 1 to 5, CHARACTERIZED by the fact that the first CSI-RS configuration additionally specifies a time interval in which the first RS is transmitted periodically.
[7]
Method according to any one of claims 1 to 6, CHARACTERIZED by the fact that the first CSI-RS configuration additionally specifies a length of the first RS in a time domain.
[8]
8. Method according to claim 1, CHARACTERIZED by the fact that the first set of QCL parameters comprises a delay average, a Doppler shift, a delay spread, or a spatial receiver parameter.
[9]
9. Method according to any one of claims 1 to 8, CHARACTERIZED by additionally: signaling the first CSI-RS configuration.
[10]
10. Method according to claim 1, CHARACTERIZED by additionally: transmitting a second RS for tracking according to a second CSI-RS configuration, the second CSI-RS configuration being different from the first CSI-RS configuration, and the second CSI-RS configuration specifying: a second set of CSI-RS resources in two consecutive partitions to transmit the second RS, the second set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the second CSI-RS configuration; and a second QCL configuration comprising a third set of QCL parameters, the second QCL configuration indicating that the second RS has a QCL relationship with a second DMRS with respect to the third set of QCL parameters.
[11]
11. Method, according to claim 10, CHARACTERIZED by the fact that the first RS and the second RS are transmitted to the same user equipment (UE).
[12]
12. Method, according to claim 10, CHARACTERIZED by the fact that the first RS and the second RS are transmitted at different intervals.
[13]
13. Method, according to claim 10, CHARACTERIZED by the fact that the second RS comprises an SS block, or a CSI-RS.
[14]
14. Method according to any one of claims 1 to 13,
CHARACTERIZED by the fact that the first RS is transmitted using a full band, a partial band, or a programmed EU data transmission bandwidth.
[15]
15. Method, CHARACTERIZED by: receiving (1302) a first reference signal (RS) for tracking according to a first RS configuration of channel state information (CSI-RS), the first CSI-RS configuration specifying: a first set of CSI-RS resources on two consecutive partitions, the first set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the first CSI-RS configuration; and a first quasi-co-location (QCL) configuration comprising a first set of QCL parameters, the first QCL configuration indicating that the first RS has a QCL relationship with a first demodulation reference signal (DMRS) in relation to the first set of QCL parameters.
[16]
16. Method, according to claim 15, CHARACTERIZED by the fact that the first set of CSI-RS features comprises four CSI-RS features of a door, the four CSI-RS features of a door being evenly spaced across a frequency domain.
[17]
17. Method according to claim 15 or 16, CHARACTERIZED by the fact that the first QCL configuration comprises a second set of QCL parameters, the first QCL configuration indicating that the first DMRS has a QCL relationship with a second downlink reference signal relative to the second set of QCL parameters.
[18]
18. Method, according to claim 17, CHARACTERIZED by the fact that the second downlink reference signal comprises a second RS for tracking.
[19]
19. Method according to claim 17, CHARACTERIZED by the fact that the second downlink reference signal comprises a synchronization signal (SS) or a physical diffusion channel block (PBCH).
[20]
20. Method according to any one of claims 15 to 19,
CHARACTERIZED by the fact that the first CSI-RS configuration additionally specifies a time interval in which the first RS is transmitted periodically.
[21]
21. Method according to any one of claims 15 to 19, characterized by the fact that the first CSI-RS configuration additionally specifies a length of the first RS in a time domain.
[22]
22. Method according to any one of claims 15 to 21, CHARACTERIZED by the fact that the first set of QCL parameters comprises a delay average, a Doppler shift, a delay spread, or a spatial receiver parameter.
[23]
23. Method, according to any one of claims 15 to 22, CHARACTERIZED by additionally: receiving the first configuration of CSI-RS.
[24]
24. Method, according to claim 15, CHARACTERIZED by additionally: receiving a second RS for tracking according to a second CSI-RS configuration, the second CSI-RS configuration being different from the first CSI-RS configuration, and the second CSI-RS configuration specifying: a second set of CSI-RS resources in two consecutive partitions, the second set of CSI-RS resources comprising a plurality of one-port CSI-RS resources configured according to the second CSI-RS configuration; and a second QCL configuration comprising a third set of QCL parameters, the second QCL configuration indicating that a second DMRS has a QCL relationship with the second RS with respect to the third set of QCL parameters.
[25]
25. Method, according to claim 24, CHARACTERIZED by the fact that the second RS comprises an SS block, or a CSI-RS.
[26]
26. Method according to any one of claims 15 to 25, CHARACTERIZED by additionally: receiving a period of time after which the first CSI-RS configuration expires.
[27]
27. Method, according to any one of claims 15 to 25, CHARACTERIZED by additionally: demodulating the first data received according to the first QCL configuration.
[28]
28. Method according to any one of claims 15 to 25, CHARACTERIZED by additionally: performing synchronization estimation based on the first RS and the first QCL configuration.
[29]
29. Method according to any one of claims 15 to 28, CHARACTERIZED by additionally: performing channel estimation according to the first QCL configuration.
[30]
30. Base station, comprising means for carrying out the method as defined in any one of claims 1 to 14.
[31]
31. User equipment (UE), comprising means for carrying out the method as defined in any of claims 15 to
29.
[32]
32. Computer program product comprising instructions, CHARACTERIZED by the fact that when instructions are executed by a computer, they cause the computer to implant the method as defined in any of claims 1 to 14 or the method as defined in any one claims 15 to 29.
NETWORK
BACKHAUL
CONNECTION OF
LINK
ASCENDANT
CONNECTION OF
LINK
DOWNWARD
AVERAGE LATE
AVERAGE LATE
DOPPLER DISPLACEMENT
DOPPLER DISPLACEMENT
LATE SPREADING
APPROXIMATE SPACE RX
SPACE RX
AVERAGE LATE
DOPPLER DISPLACEMENT
SPACE RX (BROADCAST)
AVERAGE LATE
AVERAGE DELAY DISPLACEMENT
DOPPLER DISPLACEMENT DOPPLER
DOPPLER SPREADING
LATE SPREAD SLOW
SPACE RX
SPACE RX
UNICAST CSI
AVERAGE LATE AVERAGE AVERAGE
DOPPLER DISPLACEMENT DOPPLER DISPLACEMENT
APPROXIMATE SPACE RX RETARDING SPREAD
SPACE RX
DISPLACEMENT
DOPPLER
TARDO
ACIAL AVERAGE RE (DIFFUSION)
ESP RX
AVERAGE LATE
AVERAGE DELAY DISPLACEMENT
DOPPLER DISPLACEMENT DOPPLER
DOPPLER SPREADING
SPREAD RETARDER SPATIAL RETARDING SPREAD
SPACE RX
UNICAST CSI
FREQUENCY
TIME
FREQUENCY
TIME
FREQUENCY
TIME
FREQUENCY
TIME
TIME
FREQUENCY
TIME
FREQUENCY
NETWORK NODE
RECEIVE SS BLOCK
FLAG TRS CONFIGURATION
PURCHASE
CONFIGURATION
TRS TRANSMIT TRS
ACCOMPLISH
ESTIMATE OF
SYNCHRONIZATION
TRANSMIT DATA
ACCOMPLISH
CHANNEL ESTIMATE
AND DEMODULATION OF
DICE
SIGNAL EXPIRATION TIME
TRS CONFIGURATION STOP SENDING TRSs
BACK TO SYNCHRONIZATION
APPROXIMATE
PERFORM ESTIMATE
CHANNEL AND
DEMODULATION
DATA WITH
SYNCHRONIZATION
APPROXIMATE
TRANSMIT A FIRST REFERENCE SIGN (RS) FOR TRACKING
ACCORDING TO A FIRST
CONFIGURATION OF CHANNEL STATE INFORMATION RS (CSI-RS)
RECEIVE A FIRST REFERENCE SIGN (RS) FOR TRACKING
ACCORDING TO A FIRST
CONFIGURATION OF CHANNEL STATE INFORMATION RS (CSI-RS)
TRANSMIT INFORMATION FROM
A FIRST CONFIGURATION
TRACE REFERENCE SIGNAL (TRS)
TRANSMIT A SECOND
TRS CONFIGURATION
TRANSMIT A FIRST TRS
FOR AN EU ACCORDING TO
FIRST TRS CONFIGURATION, AND TRANSMIT ONE
SECOND TRS FOR EU DE
AGREEMENT WITH THE SECOND
TRS CONFIGURATION
STATION
BASIC
NETWORK OTHER
MAIN NETWORKS
STATION
BASIC
INPUT TRANSCEIVER / UNIT
PROCESSING EXIT
MEMORY
INPUT / PROCESSING UNIT
OUTPUT
MEMORY
UNITY OF
PROCESSING
MEMORY
STORAGE
IN LARGE SCALE
DISPLAY ADAPTER
OF VIDEO
INTERFACE
NETWORKS
NETWORK INTERFACE MOUSE / I / O KEYBOARD /
PRINTER

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法律状态:
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