Reference signaling schemes in wireless communications
By quickly determining the reference signal list and state relationship in a wireless communication system, the beam switching delay problem is solved and more efficient communication is achieved.
Patent Information
- Application Number
- CN202080104137.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-07
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2040-08-07
AI Technical Summary
Existing wireless communication systems have long delays during beam switching, especially when the new TCI state is unknown, which affects communication efficiency.
By determining the reference signal list in the user equipment and quickly determining the relationship to the state after receiving the first signaling, the delay in applying the new TCI state is reduced, including applying the new TCI state without waiting for the first transmission of the reference signal.
The delay of beam switching is reduced, and the efficiency and response speed of the communication system are improved.
Smart Images

Figure CN116097819B_ABST
Abstract
Description
Technical Field
[0001] This patent document generally relates to systems, devices, and techniques for wireless communications. Background Art
[0002] Wireless communication technologies are moving the world toward an increasingly connected and networked society. The rapid development of wireless communications and technological advancements are driving greater demands for capacity and connectivity. Other considerations, such as energy consumption, device cost, spectrum efficiency, and latency, are also crucial to meeting the demands of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies must support a greater number of users and devices. Summary of the Invention
[0003] This document relates to methods, systems, and devices for control information configuration in wireless communications.
[0004] In one aspect, a wireless communication method is disclosed. The wireless communication method is performed by a user equipment and includes: determining a list of one or more reference signals; receiving, during a first time unit, first signaling including a state; determining a relationship between a reference signal corresponding to the state and the list; and determining, based on the relationship, a second time unit associated with the state or the first signaling.
[0005] In another aspect, a wireless communication method is disclosed. The wireless communication method is performed by a user equipment and includes: determining a list of one or more reference signals; receiving first signaling including a state during a first time unit; determining a type of the state based on whether the user equipment reports channel state information for resources corresponding to the state; and determining a second time unit associated with the state based on the type of the new state.
[0006] In another aspect, a wireless communication method is disclosed. The wireless communication method is performed by a network device and includes: determining a list of one or more reference signals; transmitting, during a first time unit, first signaling including a status to a user equipment; determining a relationship between a reference signal corresponding to the status and the list; and determining a second time unit associated with the status or the first signaling based on the relationship.
[0007] In another aspect, a wireless communication device is disclosed that includes a processor configured to perform the disclosed method.
[0008] In another aspect, a computer-readable medium having code stored thereon is disclosed. When executed by a processor, the code causes the processor to perform the methods described in this document.
[0009] These features and others are described in this document. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 and Figure 2 The operation of the user equipment is shown in the case where a new TCI (Transmission Configuration Indication) state is applied after a synchronization signal block (SSB) corresponding to the new TCI state is transmitted, wherein the new TCI state is included in the first MAC-CE (MAC Control Element).
[0011] Figure 3 and Figure 4 Operation of a user equipment according to some embodiments of the disclosed technology is illustrated, in which case a new TCI state is applied without waiting for transmission of an SSB corresponding to the new TCI state, wherein the new TCI state is included in a first MAC-CE.
[0012] Figure 5 and Figure 6 An example is shown in which a new TCI state activated by a second MAC-CE at a second time after waiting for the first transmission of the corresponding SSB is added to the SSB list.
[0013] Figure 7 An example is shown in which a new TCI state activated by a second MAC-CE is added to the SSB list at a second time without waiting for the first transmission of the corresponding SSB.
[0014] Figure 8 A fourth time instant is shown corresponding to when the user equipment receives the first transmission of SSB1 which occurs before the first transmissions of SSB2 and SSB3.
[0015] Figure 9 A fourth time instant is shown corresponding to when the user equipment receives the first transmission of SSB3 which occurs after the first transmissions of SSB1 and SSB2.
[0016] Figure 10 and Figure 11 It is shown that the user equipment configures the SSB list based on the information reported by the user equipment.
[0017] Figure 12 and Figure 13 Operation of a user equipment based on some embodiments of the disclosed technology is illustrated, in which case a new TCI (transmission configuration indication) state is applied without waiting for the transmission of a synchronization signal block (SSB) corresponding to the new TCI state, where the new TCI state is in radio resource control (RRC) signaling.
[0018] Figure 14 and Figure 15 The operation of the user equipment is shown, in this case applying a new TCI (Transmission Configuration Indication) state after transmission of a Synchronization Signal Block (SSB) corresponding to the new TCI state, where the new TCI state is in the RRC signaling.
[0019] Figure 16 An example of wireless communication including a base station (BS) and user equipment (UE) based on some embodiments of the disclosed technology is shown.
[0020] Figure 17 An example of a block diagram of a portion of an apparatus in accordance with some embodiments of the disclosed technology is shown.
[0021] Figures 18A to 18C An example flow chart of a wireless communication method based on some embodiments of the disclosed technology is shown. DETAILED DESCRIPTION
[0022] The disclosed technology provides implementations and examples of reference signaling configuration schemes in wireless communications. Although 5G terminology is used in some cases to facilitate understanding of the disclosed technology, the disclosed technology is applicable to wireless systems and devices that use communication protocols other than 5G or 3GPP protocols.
[0023] Figure 1 The operation of the user equipment for applying or updating the TCI state for wireless communication is shown. The first MAC-CE may update the TCI (Transmission Configuration Indicator) state for PDSCH (Physical Downlink Shared Channel) / PDCCH (Physical Downlink Control Channel) / other. The UE receives a PDSCH including the first MAC-CE at a first moment in a first time unit. The moment corresponds to a time point, and the time unit corresponds to a time interval including the time point. The time unit includes one of a time slot, a subslot, an OFDM symbol, or a subframe.
[0024] The UE sends an acknowledgment (ACK) for the PDSCH. Figure 1T_HARQ in the figure indicates the time period between the time UE receives the PDSCH and the time UE transmits the ACK for the PDSCH. The third time indicates the minimum delay after which the UE can apply the new TCI state after transmitting the ACK for the PDSCH. For example, it means the delay until the UE decodes the first MAC CE command. If the UE has higher capability, the UE can start applying the new TCI state from the third time unit including the third time. If the UE has lower capability, the UE needs to start applying the new TCI state after the third time and before the second time. first-SSB is the duration of the first transmission of the SSB of the new TCI state after the UE decodes the MAC-CE, and it is between the third time and the first transmission of the SSB. The SSB of the new TCI state is received in the first transmission of the SSB. The SSB of the new TCI state is QCL-TypeA or QCL-TypeC to the new TCI state. The UE needs to have the capability to apply the new TCI state before the second time unit including the second time. The TCI state update speeds up the beam switching, but the interval between the first time and the second time is quite long. Referring to Figure 1 , the interval includes T first_SSB , which is the duration between the third time and the first transmission of the SSB corresponding to the new TCI state. When the periodicity of the SSB is long, such as 80ms, the interval will be too long, then the gNB cannot switch the beam in time.
[0025] Figure 1 The delay of applying the new TCI state when the TCI state is known is shown. When the new TCI state is unknown, the delay of applying the new TCI state will be longer, as shown in Figure 2 . Compared with Figure 1 , since the UE does not report the L1-RSRP for the new TCI state before receiving the first MAC-CE, the interval between the first time in the first time unit (when the UE receives the PDSCH including the first MAC-CE) and the second time in the second time unit (when the new TCI state can be applied to the PDSCH / PDCCH) includes an additional duration for measuring the L1-RSRP. This additional duration is very long, for example, 7 seconds.
[0026] The disclosed technology provides various embodiments that can shorten the interval between the first time in the first time unit (when the UE receives the signaling, for example, the PDSCH including the first MAC-CE) and the second time in the second time unit (the UE can apply the new TCI state for the PDSCH / PDCCH / other no later than the second time unit).
[0027] Example 1
[0028] In embodiment 1, the UE determines an SSB list (e.g., an SSB list in which the first type of reference includes an SSB) before receiving the first MAC-CE. Although this example describes a case where the UE determines the SSB list, the disclosed technology is not limited to the SSB list and can be applied to other reference signals. When the SSB corresponding to the new TCI state activated by the first MAC-CE is in the SSB list, the new TCI state can be applied to the element (e.g., PDSCH / PDCCH / PUSCH / PUCCH / reference signal) without waiting for the first transmission of the SSB corresponding to the new TCI state. Figure 3 and Figure 4 The operation of a user equipment based on some embodiments of the disclosed technology is illustrated, in which case an SSB corresponding to a new TCI state is included in an SSB list so that the new TCI state can be applied without waiting for the transmission of the SSB corresponding to the new TCI state. Figure 3 corresponds to the case where the new TCI state is known, and Figure 4 Corresponding to the case where the new TCI state is unknown. Whether the new TCI state is known or unknown can be determined based on whether one or more predetermined conditions are met. Example 2 of this patent document will discuss the case when the new TCI state is determined to be known or unknown. Applying a new TCI state for an element means one of the following: the new TCI state is the activated TCI state of the element; a mapping between the TCI state in the MAC-CE and the code point in the DCI is applied, and the code point is used to indicate the TCI state of the element; the new TCI state is a candidate TCI state of the element; the UE is able to apply the new TCI state to the element. The UE is capable of receiving a PDCCH with a new TCI state of the element, the state being applied to the element starting at a time unit that is no later than a second time unit, the state being determined as a candidate state for the element starting at a time unit that is no later than the second time unit, the user equipment is capable of receiving a PDCCH carrying the state of the element, the element being no later than the second time unit, receiving the element with the state starting at a time unit that is no later than the second time unit, and receiving a PDCCH carrying the state of the element starting at a time unit that is no later than the second time unit.
[0029] When the SSB corresponding to the new TCI state is not included in the SSB list, such as Figure 1 and Figure 2As shown, after waiting for the first transmission of the SSB corresponding to the new TCI state, the new TCI state can be applied to the PDSCH / PDCCH / PUSCH / PUCCH / reference signal. The SSB corresponding to the TCI state includes an SSB in the TCI state or QCLed to the TCI state, or the SSB corresponding to the TCI state includes an SSB that is QCLed to the TCI state with respect to QCL-Type A or QCL-Type C. Therefore, the SSB is in the TCI state, or the SSB is a reference QCL-RS of a reference signal source in the TCI state.
[0030] For example, if the new TCI state is known, the UE should be able to start the new TCI state no later than time slot k+T HARQ +(3ms+TOk*(T first-SSB +T SSB-proc )) / NR time slot length (e.g., the second time unit) applies a new TCI state for PDSCH / PDCCH / PUSCH / PUCCH / reference signal. If the SSB corresponding to the new TCI state in the first MAC-CE is in the SSB list, then TO k is 0, such as Figure 3 As shown, otherwise TO k is 1, such as Figure 1 As shown. The PDSCH including the first MAC-CE is located in time slot k. HARQ is the interval between time slot k and the HARQ-ACK of the PDSCH including the first MAC-CE, such as Figure 1 As shown. first-SSB T is the time from the UE decoding the first MAC CE command to the first transmission of the SSB in the new TCI state. SSB-proc 2ms. Figure 3 The new TCI state activated by the first MAC-CE may be applied to the The PDSCH / PDCCH / PUSCH / PUCCH / reference signal starting in the first slot after [Number], where [mu] is the SCS configuration of the PUCCH, includes the HARQ-ACK for the PDSCH including the first MAC-CE. The HARQ-ACK for the PDSCH including the first MAC-CE is sent in slot n.
[0031] If the new TCI state is unknown, the new TCI state may be applied no later than time slot k+T HARQ +(3ms+T L1-RSRP +TOuk*(T first-SSB +T SSB-procPDSCH / PDCCH / PUSCH / PUCCH / reference signals. If the SSB corresponding to the new TCI state in the first MAC-CE is in the SSB list, TO uk is 0, as shown in Figure 4 , otherwise TO uk is 1, as shown in Figure 2 . T first-SSB refers to the time from the UE decoding the MAC CE command to the first transmission of the SSB of the new TCI state if the new TCI state does not involve QCL-TypeD, T first-SSB refers to the time from the UE decoding the MAC CE command to the first transmission of the SSB of the new TCI state after at least one of the L1-RSRP (Reference Signal Received Power), L1-SINR (Signal-to-Interference-Plus-Noise Ratio), PMI (Precoding Matrix Indicator) or L3-RSRP measurements if the new TCI state involves QCL-TypeD, as shown in Figure 2 . T L1-RSRP is the time for L1-RSRP measurement for Rx beam refinement, and when the new TCI state does not involve QCL-TypeD, T L1-RSRP may also be replaced by the time for / L1-SINR / PMI / L3-RSRP measurements for Rx beam refinement, T L1-RSRP is 0.
[0032] The following embodiments describe various methods for UE to obtain the SSB list:
[0033] Embodiment 1 : The UE determines the SSB list based on the configuration of the gNB. For example, the gNB configures the SSB list to the UE. The gNB can configure the SSB list to the UE through RRC signaling or through a second MAC-CE. The list of MAC-CEs and the list of RRC signaling can be the same as each other. In some other embodiments, the list of MAC-CEs and the list of RRC signaling can be different from each other. In certain embodiments, the second MAC-CE can be the same MAC CE as the first MAC-CE, as shown in Figures 1 to 4As shown, it is used to update the TCI state of the channel. In some embodiments, the second MAC-CE can be a separate MAC CE from the first MAC-CE. Starting from the second moment in the second time unit, the new SSB in the second MAC-CE will be added to the SSB list. When the first MAC-CE and the second MAC-CE are the same MAC-CE, the new TCI state activated by the second MAC-CE can be applied to the PDSCH / PDCCH / other at no later than the second time unit including the second moment.
[0034] Figure 5 and Figure 6 An example is shown in which a new SSB activated by a second MAC-CE at a second time during a second time unit is added to the SSB list after waiting for the first transmission of the corresponding SSB. The SSB list may be updated multiple times, and its implementation is as follows Figure 5 and Figure 6 As shown, it can be used to update the SSB list. The update can include configuring the SSB list and / or updating the existing SSB list. In some embodiments, adding the SSB in the second MAC-CE to the SSB list means that the SSB has been tracked by the UE.
[0035] If the old SSB in the SSB list is not in the second MAC-CE, the old SSB will be deleted from the SSB list starting from the fourth moment (or the third moment or the second moment), such as Figure 5 or Figure 6 The fourth moment is the time when the UE receives the first transmission of the SSB corresponding to the new SSB in the second MAC-CE. If there are multiple new SSBs in the second MAC-CE, the fourth moment may correspond to when the UE receives the earliest new SSB or when the UE receives the last new SSB. Figure 8 It is shown that the fourth time instant is the time when the UE receives the first transmission of SSB1 before the first transmissions of SSB2 and SSB3. Figure 9 The fourth moment is shown when the UE receives the first transmission of SSB3 after the first transmission of SSB1 and SSB2. Figure 8 and Figure 9 In the example, the new SSB set is {SSB1, SSB2, SSB3}, and from the fourth moment (or the fourth time unit including the fourth moment) the old SSB4 will be deleted from the SSB list.
[0036] Figure 7 An example is shown in which a new SSB activated by a second MAC-CE is added to the SSB list at a second time without waiting for the first transmission of the corresponding SSB. Figure 7In the case of T, the UE has tracked the SSB for the duration of L1-RSRP before MAC-CE. Therefore, the UE does not need to wait for the first transmission of the SSB to track the SSB. L1-RSRP The SSB corresponding to the new TCI state is measured during Figure 7 As shown in the report SSB L1-RSRP / L1-SINR / L3-RSRP / L3-SINR / PMI, there is no need to wait for T L1-RSRP (i.e. TO uk In the case of the first transmission of an SSB after the second MAC-CE is 0), the new SSB will be added to the SSB list from the second moment. If the old SSB in the SSB list is not in the second MAC-CE, the old SSB will be deleted from the SSB list from the second moment.
[0037] In some embodiments, the second MAC-CE and the first MAC-CE share the same LCID (Logical Channel ID). Therefore, the second MAC-CE and the first MAC-CE can be the same MAC-CE. For example, the same MAC-CE includes 12 TCI states. The first 8 TCI states in the same MAC-CE are used for the TCI state set of PDSCH. In this case, the first 8 TCI states are mapped to the code points of the TCI field in the DCI. The SSBs of the 12 TCI states are in the SSB list. For example, the first 8 TCI states correspond to {SSB1, SSB2}, the last 4 TCI states correspond to {SSB3, SSB6, SSB16, SSB13}, and then the SSB list includes {SSB1, SSB2, SSB3, SSB6, SSB16, SSB13}. Therefore, the SSB activated by the second MAC-CE can be directly located in the second MAC-CE, or the new TCI state is located in the second MAC-CE, and the SSB corresponding to the new TCI state will be added to the SSB list.
[0038] Implementation 2: The UE determines the SSB list based on information reported by the UE. The UE provides the SSB list to the gNB. Figure 10 and Figure 11 It shows that the UE determines the SSB list based on the information reported by the UE. Figure 10 In the illustrated embodiment, the new SSB list will be applied starting from a predetermined time length after the UE receives a response from the gNB. Figure 11 In the embodiment shown, after the UE feeds back the SSB list without waiting for a response from the gNB, the new SSB list will be applied starting from a predetermined time length. Figure 10 and Figure 11In the embodiment, the UE feeds back the SSB list in the third MAC CE included in the PUSCH. In some embodiments, the UE may also feed back the SSB list in the UCI.
[0039] Embodiment 3 The UE determines the SSB list based on the CSI report it reports. For example, the UE maintains an SSB list. When the UE reports an SSBRI (SSB Resource Indicator) in a CSI report, the UE adds the SSB corresponding to the SSBRI to the SSB list from the fifth to the sixth time instant. The sixth time instant is after the fifth time instant, and the interval between the fifth and sixth time instants is predefined or determined based on UE capabilities. The UE removes the SSB corresponding to the SSBRI from the SSB list after the sixth time instant. The fifth time instant is one of the following: the time when the UE reports the SSBRI, the time of the last transmission of the SSB corresponding to the SSBRI before the UE reports the SSBRI, regardless of whether the UE reports the SSBR of the SSB, the time of the last transmission of the SSB, a predetermined time after the UE reports the SSBRI, a predetermined time after the UE receives a response to the reported SSBRI from the gNB, or a predetermined time after the last transmission of the SSB corresponding to the SSBRI. The SSBRI can be the SSBRI reported in a normal CSI report. The SSBRI can also be the SSBRI reported in the Physical Random Access Channel (PRACH) process. The SSBRI can also be the SSBRI reported in the Beam Failure Request. Figure 2 、 Figure 4 、 Figure 6 and Figure 7 As shown, SSB will be in period T L1-RSRP It was later added to the SSB list.
[0040] Embodiment 4 : The UE determines an SSB list based on the activated TCI state of the CORESET. The SSB list includes SSBs corresponding to the activated TCI state of the CORESET. When the new TCI state of the CORESET is activated, the SSBs corresponding to the new TCI state of the CORESET will be added to the SSB list. In some embodiments, when the old TCI state of the CORESET is deactivated, the SSBs corresponding to the old TCI state of the CORESET will be deleted from the SSB list. In some other embodiments, when the old TCI state of the CORESET is deactivated and the SSBs corresponding to the old TCI state of the CORESET do not correspond to any activated TCI state of the PDSCH / other CORESETs, the SSBs corresponding to the old TCI state of the CORESET will be deleted from the SSB list.
[0041] Embodiment 5 :The UE determines the SSB list based on the activated TCI state of the PDSCH. The SSB list includes the SSBs corresponding to the activated TCI state of the PDSCH activated by the MAC-CE. When a new TCI state is activated for the PDSCH, the SSBs corresponding to the new TCI will be added to the SSB list. When the old TCI state of the PDSCH is deactivated, the SSBs corresponding to the old TCI state will be added to the SSB list. In some other embodiments, when the old TCI state of the PDSCH is deactivated and the SSBs corresponding to the old TCI state do not correspond to any activated TCI state of the PDSCH / CORESET, the SSBs corresponding to the old TCI state may be added to the SSB list.
[0042] Embodiment 6 :UE determines the SSB list based on UE capabilities. UE reports its ability to track the maximum number of SSBs (Z) in the SSB list. If the number of SSBs corresponding to the TCI state in the first MAC-CE is less than or equal to the UE capabilities, the new TCI state activated by the first MAC-CE can be applied for PDSCH / PDCCH / PUCCH / PUSCH / reference signal without waiting for SSBs, such as Figure 3 or Figure 4 For example, the new TCI state activated by the first MAC-CE can be applied to the slave time slot , where μ is the SCS configuration for the PUCCH that includes the HARQ-ACK for the PDSCH that includes the first MAC CE. If the number of SSBs corresponding to the TCI states in the first MAC-CE is greater than the UE capability (Z), the first Z TCI states activated by the first MAC-CE may be applied to the PDSCH / PDCCH / PUCCH / PUSCH / reference signal without waiting for the SSBs, as Figure 3 or Figure 4 The remaining TCI states activated by the first MAC-CE may be applied to PDSCH / PDCCH / PUCCH / PUSCH after waiting for SSB, as shown in FIG. Figure 1 or Figure 2 The UE shall always keep track of the maximum number of SSBs in the SSB list.
[0043] Embodiment 7:UE configures SSB list based on UE capability. UE reports its capability to track the maximum number of SSBs (Z) in the SSB list. If the sum of the new number of SSBs X corresponding to the new TCI state in the first MAC-CE and the number of SSBs Y included in the SSB list before the first signaling is less than or equal to the UE capability, the new TCI state activated by the first MAC-CE can be applied to PDSCH / PDCCH / PUCCH / PUSCH / reference signals without waiting for SSBs, such as Figure 3 or Figure 4 If the sum is greater than the UE capability, then after waiting for the first transmission of the new SSB, the new TCI state corresponding to the last X+YZ new SSBs will be applied to the PDSCH / PDCCH / PUCCH / PUSCH / reference signal, as shown Figure 1 or Figure 2 Other new TCI states will be applied to PDSCH / PDCCH / PUCCH / PUSCH without waiting for the first transmission of a new SSB, such as Figure 3 or Figure 4 shown.
[0044] In some embodiments, the above description may be applied to determine the delay of applying a new TCI state in the first signaling. In other embodiments, the above description may be applied to determine the delay of applying any TCI state in the first signaling, whether it is new or old.
[0045] In some embodiments, the maximum number of SSBs in the SSB list is based on UE capabilities.
[0046] In some embodiments, the SSBs in the SSB list are associated with a first parameter, the first parameter including at least one of a PCI (physical cell identity), a frequency location, and a measureObjectID. The SSB list may include SSBs with different first parameters.
[0047] In some embodiments, the SSB list is associated with a second parameter, such that different SSB lists are associated with different second parameters, and different second parameters are associated with different SSB lists. The second parameter includes at least one of the following: a serving cell, a coreset pool index or a serving cell group, and a UE.
[0048] In some embodiments, when the second parameter corresponding to the SSB list is disabled or reconfigured, the SSB list will be empty.
[0049] In some embodiments, before RRC connection (e.g., before the UE is configured with a Cell Radio Network Temporary Identity (C-RNTI)), the SSB list only includes SSBs corresponding to the SSBs selected by the UE during the PRACH process.
[0050] Although the above example is described in terms of TCI states, the states included in the first MAC-CE are not limited thereto. In some embodiments, the state in the first MAC-CE may include one of a TCI (transmission configuration indication) state, a state of a selected sounding reference signal SRS (sounding reference signal) resource set, or a state of spatial relationship information. In some embodiments, the new state includes one of a QCL reference signal or a spatial relationship reference signal. In some embodiments, the state in the first MAC-CE may include a state of a selected SRS resource set, for example, the state is an SRI code point corresponding to a selected SRS resource set. The state may be a state of spatial relationship information. The spatial relationship information includes a reference signal on which the PUSCH / PUCCH / SRS spatial filter is based. The state includes a QCL reference signal for a downlink channel or signal.
[0051] In some embodiments, the SSB list may be replaced with a first type reference signal list, where the first type reference signal includes at least one of an SSB, a TRS, or other signals. When the first type reference signal corresponding to the new TCI state activated by the first MAC-CE is in the first type reference signal list, the new TCI state may be applied to the PDSCH / PDCCH / PUSCH / PUCCH without waiting for the first transmission of the first type reference signal corresponding to the new TCI state, except that the first transmission of the SSB is replaced with the first transmission of the first type reference signal, as shown in FIG. Figure 3 or Figure 4 When the first type of reference signal corresponding to the new TCI state is not in the first type of reference signal list, in addition to the first transmission of the SSB being replaced by the first transmission of the first type of reference signal, the new TCI state can be applied to the PDSCH / PDCCH / PUSCH / PUCCH after waiting for the first transmission of the first type of reference signal corresponding to the new TCI state, as shown in FIG. Figure 1 or Figure 2 As shown in .
[0052] The first type reference signal corresponding to the TCI state may be determined by one of the following methods:
[0053] Method 1: If the reference signal in the TCI state is TRS (CSI-RS for tracking), the first type of reference signal corresponding to the TCI state is TRS, otherwise, the first type of reference signal corresponding to the TCI state is SSB in the TCI state or QCL-ed to the TCI state relative to QCL-Type A or QCL-Type C.
[0054] Method 2: If there is a TRS in the TCI state or is QCL-ed to the TCI state relative to QCL-Type A or QCL-Type C, the first type reference signal corresponding to the TCI state is the TRS. Otherwise, the first type reference signal corresponding to the TCI state is the SSB in the TCI state or the SSB QCL-ed to the TCI state relative to TCL-Type A or QCL-Type C.
[0055] Method 3: The first-type reference signal corresponding to the TCI state is either TRS or SSB. This depends on which is first transmitted. If the first transmission of TRS precedes the first transmission of SSB, the first-type reference signal corresponding to the TCI state is TRS; otherwise, it is SSB. The first-type reference signal is in the TCI state or is QCL-ed to the TCI state with respect to QCL-Type A or QCL-Type C.
[0056] In some embodiments, if the UE has reported a reference PMI / CQI in a TCI state, the new TCI state may be applied to the PDSCH / PDCCH / PUSCH / PUCCH without waiting for the first transmission of the first type of reference signal corresponding to the new TCI state, e.g. Figure 3 or Figure 4 shown.
[0057] The above includes the delay in applying the TCI state updated by MAC-CE. The above process can also be used to determine the delay in applying the TCI state included in the RRC signaling. For example, if the first reference signal corresponding to the new TCI state is in the second list of first reference signals, the new TCI state included in the RRC signaling can be applied to PDSCH / PDCCH / PUSCH / PUCCH without waiting for the first transmission of the first reference signal corresponding to the new TCI state, such as Figure 12 or Figure 13 Otherwise, the new TCI state included in the RRC signaling may be applied to PDSCH / PDCCH / PUSCH / PUCCH after waiting for the first transmission of the first reference signal corresponding to the new TCI state, as shown in FIG. Figure 14 or Figure 15Applying a new TCI state for one or more elements may mean one of the following: the new TCI state is the activated TCI state of the element; applying a mapping between the TCI state in the MAC-CE and a codepoint in the DCI, the codepoint being used to indicate the TCI state of the element; the new TCI state is a candidate TCI state for the element; the UE is capable of applying the new TCI state for the element; and the UE is capable of receiving a PDCCH with the new TCI state for the element.
[0058] exist Figure 12 and Figure 14 In the RRC signaling, the new TCI state is known. Figure 13 and Figure 15 In the case of a new TCI state in RRC, it is unknown. Figures 12 to 15 In, T RRC_processing The first type reference signal list corresponding to the RRC signaling and the first type reference signal list corresponding to the RRC signal may be the same or different.
[0059] Example 2
[0060] The UE determines the type of TCI state based on whether the UE reports a CSI report (e.g., a first type CSI report) for the RS resource corresponding to the TCI state. The RS resource corresponding to the TCI state is an RS resource in the TCI state or an RS resource that has been QCLed to the TCI state. The type of TCI state can be known or unknown.
[0061] The TCI state is known if one or more conditions are met, otherwise the TCI state is unknown. The conditions include receiving a TCI state switch command within a second predetermined time length after the last transmission of RS resources for beam reporting or measurement from the last transmission of RS resources to the completion of the activated TCI state switch of the TCI state, and the UE has sent at least one CSI report for the TCI state before the TCI state switch command, and the TCI state remains detectable during the TCI state switch, and the SSB associated with the TCI state remains detectable during the TCI state switch, for example, the SNR of the TCI state ≥ -3dB. Before the TCI state switch command, the UE has sent at least one CSI report for the TCI state, including that the UE has reported at least one of L1-RSRP / L1-SINR / CQI / PMI / RI / L3-RSRP / L3-SINR for the TCI state.
[0062] If the TCI state is unknown, the interval between the time when the TCI state switching command including the TCI state is received and the TCI state application time includes T L1-RSRP , otherwise the interval does not include TL1-RSRP .
[0063] The TCI state switching command includes a MAC-CE including a TCI state or RRC signaling including a TCI state.
[0064] The above-described embodiments are applicable to wireless communications. Figure 16 An example of a wireless communication system (e.g., a 5G or NR cellular network) is shown, including a base station (BS) 1620 and one or more user equipment (UEs) 1611, 1612, and 1613. In some embodiments, the UE uses implementations of the disclosed technology (1631, 1632, 1633) to access the BS (e.g., a network), which then enables subsequent communication from the BS to the UE (1641, 1642, 1643). The UE can be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, Internet of Things (IoT) device, etc.
[0065] Figure 17 An example of a block diagram representation of a portion of an apparatus is shown. An apparatus 1710, such as a base station or wireless device (or UE), may include processor electronics 1720, such as a microprocessor that implements one or more techniques presented in this document. The apparatus 1710 may include transceiver electronics 1730 to send and / or receive wireless signals via one or more communication interfaces, such as antennas 1740. The apparatus 1710 may include other communication interfaces for transmitting and receiving data. The apparatus 1710 may include one or more memories (not explicitly shown) configured to store information, such as data and / or instructions. In some embodiments, the processor electronics 1720 may include at least a portion of the transceiver electronics 1730. In some embodiments, the apparatus 1710 is used to implement at least some of the disclosed techniques, modules, or functions.
[0066] Figure 18A An example of a wireless communication scheme based on some embodiments of the disclosed technology is shown. At step 1812, method 1810 includes determining a list of one or more reference signals. At step 1814, method 1810 also includes receiving first signaling including a state during a first time unit. At step 1816, method 1810 also includes determining a relationship between the reference signal corresponding to the state and the list. At step 1818, method 1810 also includes determining a second time unit associated with the state or the first signaling based on the relationship.
[0067] Figure 18BAn example of a wireless communication scheme based on some embodiments of the disclosed technology is shown. At step 1822, method 1820 includes determining a list of one or more reference signals. At step 1824, method 1820 also includes receiving first signaling including a state during a first time unit. At step 1826, method 1820 also includes determining a type of the state based on whether channel state information for resources corresponding to the state has been reported by a user equipment. At step 1828, method 1820 also includes determining a second time unit associated with the state based on the type of the new state.
[0068] Figure 18C An example of a wireless communication scheme based on some embodiments of the disclosed technology is shown. At step 1832, method 1830 includes determining a list of one or more reference signals. At step 1834, method 1830 also includes transmitting a first signaling including a state to a user equipment during a first time unit. At step 1836, method 1830 also includes determining a relationship between the reference signal corresponding to the state and the list. At step 1838, method 1830 also includes determining a second time unit associated with the state or the first signaling based on the relationship. Determining the list, determining the relationship, and determining the second time unit can be performed in a similar manner as discussed for the user equipment.
[0069]
[0046] A clause-based description format is used below to describe additional features of the above-described methods / techniques that may preferably be implemented in some embodiments.
[0070] 1. A wireless communication method, performed by a user equipment, comprising: determining a list of one or more reference signals; receiving, during a first time unit, first signaling including a state; determining a relationship between the reference signal corresponding to the state and the list; and determining, based on the relationship, a second time unit associated with the state or the first signaling.
[0071] 2. The method of clause 1, wherein determining the relationship comprises determining whether the reference signal is in a list.
[0072] 3. A method according to clause 1, wherein the relationship is determined during a third time unit, the third time unit being i) a predetermined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel (PDSCH) carrying the first signaling, or ii) a predetermined time length from the first time unit.
[0073] 4. A method according to clause 3, wherein the predetermined length of time is based on a type of the first signalling.
[0074] 5. A method as set out in clause 4, wherein the predetermined time length is 3 ms for a type of the first signalling being a MAC Control Element (MAC-CE), or the predetermined time length is a Radio Resource Control (RRC) processing delay for a type of the first signalling being an RRC.
[0075] 6. A method according to clause 1, wherein the determining of the second time unit comprises determining, based on the relationship, whether a duration for which the user equipment waits for the first transmission of the reference signal is included in a time interval between the first time unit and the second time unit.
[0076] 7. A method according to clause 3, wherein the determining of the second time unit comprises determining, based on the relationship, whether a duration for which the user equipment waits for the first transmission of the reference signal is included in a time interval between the third time unit and the second time unit.
[0077] 8. A method according to clause 6 or 7, wherein the first transmission of the reference signal occurs after decoding of the first signalling by the user equipment or after completion of L1 channel state measurement by the user equipment.
[0078] 9. A method according to clause 6 or 7, wherein the determining determines that a duration for which the user equipment waits for a first transmission of a reference signal in case the reference signal is in the list is not included in the time interval.
[0079] 10. A method according to clause 6 or 7, wherein the determining determines that a duration for which the user equipment waits for a first transmission of a reference signal if the reference signal is not in the list is included in the time interval.
[0080] 11. A method as described in clause 8, wherein the L1 measurement comprises one of an L1-RSRP (reference signal received power) measurement, an L1-SINR (signal to interference plus noise ratio) measurement, a PMI (precoding matrix indicator) measurement, a CQI (channel quality indicator) measurement or an RI (rank indicator) measurement.
[0081] 12. The method of clause 1, further comprising receiving second signaling comprising the list.
[0082] 13. The method of clause 1, wherein the first signaling includes information for updating the list.
[0083] 14. A method as described in clause 13, wherein the first signaling is a MAC-CE, the state is included in the first M states of the MAC-CE, and the reference signal corresponding to any state in the MAC-CE is in the list.
[0084] 15. A method according to clause 12, wherein the new reference signal in the second signalling is added to the list during the second time unit.
[0085] 16. The method of clause 1, wherein the list is included in information reported by the user equipment.
[0086] 17. A method according to clause 16, wherein the information reported by the user equipment is included in one of a third signalling, a CSI (Channel State Information) report or a UCI (Uplink Control Information).
[0087] 18. A method according to clause 16, wherein the reference signal in the information reported by the user equipment is in the list during a time interval between a fifth moment in time and a sixth moment in time, the time interval being predefined or determined based on capabilities of the user equipment.
[0088] 19. A method as set out in clause 16, wherein the fifth moment in time is one of: the moment when the user equipment reports the information, the moment of the last transmission of the reference signal before the user equipment reports the information, a moment after a predetermined time after the user equipment reports the information, a moment after a predetermined time after the user equipment receives a response to the information, the moment when the user equipment receives the response to the information, or a moment after a predetermined time after the last transmission of the reference signal before the user equipment reports the information.
[0089] 20. A method as described in clause 1, wherein the list includes reference signals corresponding to an activated TCI state of a channel, the channel comprising one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) in a control resource set (CORESET).
[0090] 21. The method of clause 1, wherein reference signals corresponding to an inactive state of a channel are deleted from the list.
[0091] 22. A method according to clause 21, wherein the reference signal corresponding to the inactive TCI state does not correspond to any active state of the channel.
[0092] 23. The method of clause 1, wherein the list is based on capabilities reported by user equipment.
[0093] 24. The method of clause 1, wherein the first reference signal in the list is associated with a parameter comprising at least one of a physical cell identifier (PCI), a frequency location, or a measurement object identifier (measureObjectID).
[0094] 25. A method as claimed in any of clauses 1 to 24, wherein the reference signal and the one or more reference signals comprise at least one of an SSB (Synchronisation Signal Block) or a TRS (CSI-RS for Tracking).
[0095] 26. A method as recited in any one of clauses 1 to 24, wherein the reference signal comprises a reference signal in the state or quasi-co-located (QCL-ed) to the state.
[0096] 27. A method as defined in any one of clauses 1 to 26, wherein the status comprises one of a TCI (Transmission Configuration Indication) status, a status of a selected SRS (Sounding Reference Signal) resource set, or a status of spatial relation information.
[0097] 28. A method as defined in any one of clauses 1 to 26, wherein the state comprises one of a QCL reference signal or a spatially relative reference signal.
[0098] 29. A method as defined in any one of clauses 1 to 28, wherein each of the first to third time units corresponds to one of a slot, a subslot, an OFDM symbol or a subframe.
[0099] 30. A method as claimed in any one of clauses 1 to 29, wherein the first signalling corresponds to MAC-CE (Control Element) or RRC signalling.
[0100] 31. A method as claimed in any of clauses 1 to 30, wherein the list is associated with a second parameter comprising one of the following parameters: a CORESET pool, a serving cell, a serving cell group, a user equipment or a type of the first signalling.
[0101] 32. The method of clause 31, wherein the list is empty in case the second parameter corresponding to the list is deactivated or reconfigured.
[0102] 33. A method as claimed in any of clauses 1 to 32, wherein the list comprises reference signals selected by the user equipment during a PRACH (Physical Random Access Channel).
[0103] 34. A method according to any of clauses 1 to 32, wherein the second time unit is determined based on at least one of: a type of the new beam state, a type of target element of the state, or a type of reference resource in said state.
[0104] 35. A method according to any one of clauses 1 to 32, wherein the second time unit is determined to satisfy at least one of the following: i) applying the state to the element starting with the time unit, which is not later than the second time unit, ii) the state is determined to be a candidate state of the element starting with the time unit, which is not later than the second time unit, iii) the user equipment is capable of receiving a PDCCH carrying the state of the element, which is not later than the second time unit, iv) receiving the element with the state starting with the time unit, which is not later than the second time unit, or v) receiving a PDCCH carrying the state of the element starting with the time unit, which is not later than the second time unit.
[0105] 36. A method according to any of clauses 1 to 32, wherein the first signalling is applied starting from a time unit which is not later than the second time unit.
[0106] 37. A method according to any one of clauses 1 to 32, wherein, if the first signaling includes multiple other states, the method further includes: multiple other second time units, each corresponding to the other multiple states, and wherein the application of the first signaling starts from a time unit that is no later than the second time unit and the last second time unit in the other multiple second time units.
[0107] 38. A method according to any of clauses 1 to 32, wherein the first signalling is applied starting from a time unit that is not earlier than a third time unit, wherein the third time unit is i) a predetermined time length after a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel (PDSCH) carrying the first signalling when the first signalling is MAC-CE, or ii) a predetermined time length after the first time unit when the first signalling is RRC.
[0108] 39. A method as claimed in any one of clauses 1 to 32, wherein the state is a new state in the first signalling.
[0109] 40. A method as claimed in any one of clauses 1 to 32, wherein the list is empty before the user equipment is configured with a C-RNTI (Cellular Radio Network Temporary Identity) and before the user equipment transmits the first preamble.
[0110] 41. A wireless communication method, performed by a user equipment, and comprising: determining a list of one or more reference signals; receiving first signaling including a state during a first time unit; determining a type of the state based on whether the user equipment reports channel state information about resources corresponding to the state; and determining a second time unit associated with the state based on the type of the new state.
[0111] 42. A method according to clause 41, wherein channel state information is used for the state.
[0112] 43. A method as described in clause 41, wherein the channel state information is based on a reference signal that is in the new state or is quasi co-located (QCL-ed).
[0113] 44. A method according to clause 41, wherein, if the user equipment has reported channel state information before the first signaling, the type of state is determined to be known, and / or if the user equipment has not reported channel state information before the first signaling, the type of the new state is determined to be unknown.
[0114] 45. A method as described in any of clauses 41 to 44, wherein the channel state information comprises at least one of: L1-RSRP, L1-SINR, L3-RSRP, L3-SINR, PMI, RI or CQI.
[0115] 46. A method as set out in any of clauses 41 to 44, wherein the status comprises one of a TCI (Transmission Configuration Indication) status, a status of a selected SRS (Sounding Reference Signal) resource set, or a status of spatial relation information.
[0116] 47. A method according to any of clauses 41 to 44, wherein the second time unit is determined to satisfy at least one of the following: i) the state is applied to the element starting with the time unit, which is not later than the second time unit, ii) the state is determined to be a candidate state of the element starting with the time unit, which is not later than the second time unit, iii) the user equipment is capable of receiving a PDCCH carrying the state of the element, which is not later than the second time unit, iv) receiving the element with the state starting with the time unit, which is not later than the second time unit, v) receiving a PDCCH carrying the state of the element starting with the time unit, which is not later than the second time unit.
[0117] 48. A wireless communication method, performed by a network device, and comprising: determining a list of one or more reference signals; transmitting a first signaling including a state to a user equipment during a first time unit; and determining a relationship between the reference signal corresponding to the state and the list; and determining a second time unit associated with the state or the first signaling based on the relationship.
[0118] 49. A method according to clause 48, wherein the relationship is determined during a third time unit, the third time unit being i) a predetermined time length from a time unit including a HARQ-ACK for a physical downlink shared channel (PDSCH) carrying the first signalling, or ii) a predetermined time length from the first time unit.
[0119] 50. The method of clause 48, further comprising transmitting elements with a status, the elements comprising a channel or a signal, after a first transmission of the reference signal if the reference signal is not included in the list.
[0120] 51. A method according to clause 48, further comprising transmitting elements having status, including channels or signals, without first transmitting the reference signal if the reference signal is included in the list.
[0121] 52. A method as described in clause 48, wherein whether the time interval during which the user equipment waits for the first transmission of the reference signal is included in the time interval between the first time unit and the second time unit is determined based on a relationship.
[0122] 53. A method as described in clause 49, wherein whether the time interval during which the user equipment waits for the first transmission of the reference signal is included in the time interval between the third time unit and the second time unit is determined based on a relationship.
[0123] 54. A method according to clause 52 or 53, wherein the first transmission of the reference signal occurs after decoding of the first signalling by the user equipment or after completion of L1 channel state measurement by the user equipment.
[0124] 55. A method according to clause 52 or 53, wherein, in case the reference signal is in the list, the time interval during which the user equipment waits for the first transmission of the reference signal is not included in the time interval.
[0125] 56. A method according to clause 52 or 53, wherein, in case the reference signal is not in the list, a time interval during which the user equipment waits for a first transmission of a reference signal is included in the time interval.
[0126] 57. The method of clause 48, further comprising transmitting a second signaling comprising the list.
[0127] 58. A method according to clause 57, wherein the first signalling comprises information for updating the list.
[0128] 59. The method of clause 59, wherein the first signaling is a MAC-CE, the state is included in a first M states of the MAC-CE, and the reference signal corresponding to any state in the MAC-CE is in the list.
[0129] 60. The method of clause 48, wherein the list is included in information received from the user equipment.
[0130] 61. The method of clause 60, wherein the information received from the user equipment is included in one of third signaling, a CSI (Channel State Information) report, or UCI (Uplink Control Information).
[0131] 62. The method of clause 60, wherein the reference signal in the information received from the user equipment is in the list during an interval between a fifth time and a sixth time, the interval being predefined or determined based on a capability of the user equipment.
[0132] 63. The method of clause 62, wherein the fifth time is one of a time when the user equipment reports the information, a time of a last transmission of the reference signal before the user equipment reports the information, a time after a predetermined time before the user equipment reports the information, a time after a predetermined time from when the user equipment receives a response to the information, a time when the user equipment receives the response to the information, or a time after a predetermined time from a last transmission of the reference signal before the user equipment reports the information.
[0133] 64. The method of clause 48, wherein the list includes the reference signal corresponding to an active TCI state of a channel, the channel including one of a physical downlink control channel (PDCCH) in a control resource set (CORESET) or a physical downlink shared channel (PDSCH).
[0134] 65. The method of clause 48, wherein the reference signal corresponding to an inactive state of the channel is removed from the list.
[0135] 66. The method of clause 65, wherein the reference signal corresponding to the inactive TCI state does not correspond to any active state of the channel.
[0136] 67. The method of clause 48, wherein the list is based on a capability received from the user equipment.
[0137] 68. The method of clause 48, wherein a first reference signal in the list is associated with a parameter, the parameter including at least one of a physical cell identifier (PCI), a frequency location, or a measure object identifier (measureObjectID).
[0138] 69. A method according to any of clauses 48 to 68, wherein the second time unit is determined to satisfy at least one of the following: i) applying the state to the element starting with the time unit, which is no later than the second time unit, ii) determining the state as a candidate state for the element starting with the time unit, which is no later than the second time unit, iii) determining that the user equipment is capable of receiving a PDCCH carrying the state of the element, which is no later than the second time unit, iv) transmitting the element with the state starting with the time unit, which is no later than the second time unit, v) transmitting the PDCCH carrying the state of the element starting with the time unit, which is no later than the second time unit.
[0139] 70. A method according to any of clauses 48 to 68, wherein the first signalling is applied starting from a time unit which is not later than the second time unit.
[0140] 71. A method according to any of clauses 48 to 68, wherein the first signalling is applied starting from a time unit that is no earlier than a third time unit, wherein the third time unit is i) a predetermined time length after a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel (PDSCH) carrying the first signalling when the first signalling is a MAC-CE, or ii) a predetermined time length after the first time unit when the first signalling is an RRC.
[0141] 72. A communications device comprising a processor configured to implement the method of any one or more of clauses 1 to 71.
[0142] 73. A computer-readable medium having stored thereon code which, when executed, causes a processor to perform the method of any one or more of clauses 1 to 71.
[0143] This manual together with the attached Figure one It is to be considered exemplary, where exemplary means an example and does not imply an ideal or preferred embodiment unless otherwise specified. As used herein, the use of "or" is intended to include "and / or" unless the context clearly dictates otherwise.
[0144] Some embodiments described herein are described in the general context of methods or processes, which can be implemented in one embodiment by a computer program product, embodied in a computer-readable medium including computer-executable instructions, such as program code. Computer-readable media are media that can include, without limitation, removable and non-removable storage devices including volatile and non-volatile memory devices, such as read-only memory (ROM), random-access memory (RAM), optical discs, digital versatile discs (DVDs), etc. Thus, computer-readable media can include non-transitory storage media. Generally, program modules can include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.
[0145] Some of the disclosed embodiments can be implemented using hardware circuitry, software, or a combination thereof. For example, hardware circuitry embodiments can include discrete analog and / or digital components, such as integrated as part of a printed circuit board. Alternatively or additionally, disclosed components or modules can be implemented as application specific integrated circuit (ASIC) and / or field programmable gate array (FPGA) devices. Some implementations additionally or alternatively include a digital signal processor (DSP), which is a specialized microprocessor optimized for the operation of digital signals processing related to the functionality disclosed herein. Likewise, the various components or subcomponents within each module can be implemented in software, hardware, or firmware. Connections between modules and / or components within a module can be provided using any of the connection methods and media known in the art, including but not limited to communication over the Internet, wired or wireless networks using appropriate protocols.
[0146] While this document contains many specifics, these should not be construed as limitations on the scope of the invention or of what can be claimed, but rather as descriptions of particular embodiments of the application. Certain features that are, for clarity, described above in the context of separate embodiments, can also be provided in combination in a single embodiment. Conversely, various features that are, for brevity, described above in the context of a single embodiment, can also be provided separately or in any suitable subcombination. In addition, while the above description has been made with respect to particular embodiments and illustrative examples, the application can be practiced with modifications and alterations limited only by the spirit and scope of the appended claims, including modified examples and alterations of the illustrative examples described herein. Similarly, while operations are described in a particular order, this should not be understood as requiring that such operations be performed in the particular order described or in any particular order, or that all illustrated operations be performed, to achieve desirable results.
[0147] Only a few implementations and examples are described herein. Other implementations, improvements, and modifications that can be made based on what is described and illustrated in the present disclosure can be made.
Claims
1. A method of wireless communication, the method being performed by a user equipment and comprising: determining a list of one or more reference signals, wherein a maximum number of the one or more reference signals included in the list is determined based on a capability reported by the user equipment; During a first time unit, receiving first signaling including a status, the status including a quasi-co-sited QCL reference signal; determining a relationship between the reference signal corresponding to the state and the list by determining whether the reference signal corresponding to the state is in the list; as well as determining a second time unit associated with the state or the first signaling based on the relationship; Determining the second time unit associated with the state or the first signaling based on the relationship includes determining, based on the relationship, whether a time period during which the user equipment waits for the first transmission of the reference signal is included in a time interval between the first time unit and the second time unit, wherein, in response to determining that the reference signal is in the list, the time period during which the user equipment waits for the first transmission of the reference signal is not included in the time interval, and in response to determining that the reference signal is not in the list, the time period during which the user equipment waits for the first transmission of the reference signal is included in the time interval, and wherein, in response to determining that the reference signal is not in the list, the reference signal is added to the list in the second time unit, and a reference signal corresponding to an inactive transmission configuration indication (TCI) state of a channel is deleted from the list, and The first signaling is applied starting from a time unit no later than the second time unit, and the reference signal added to the list and the one or more reference signals are at least one of a synchronization signal block SSB and a tracking reference signal TRS of a channel state information reference signal CSI-RS for tracking.
2. The method according to claim 1, wherein The relationship is determined during a third time unit, which is i) a predetermined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel PDSCH carrying the first signaling, and ii) a predetermined time length from the first time unit.
3. The method according to claim 2, wherein: The predetermined time length is obtained according to the type of the first signaling.
4. The method according to claim 3, wherein: If the type of the first signaling is MAC control element MAC-CE, the predetermined time length is 3ms, or if the type of the first signaling is RRC, the predetermined time length is radio resource control RRC processing delay.
5. The method according to claim 1, wherein The first transmission of the reference signal occurs after the user equipment decodes the first signaling, or after the user equipment completes L1 channel state measurement.
6. The method according to claim 5, wherein: The L1 measurement includes one of L1-reference signal received power L1-RSRP measurement, L1-signal to interference and noise ratio L1-SINR measurement, precoding matrix indicator PMI measurement, channel quality indicator CQI measurement or rank indicator RI measurement.
7. The method according to claim 1, further comprising: Second signaling including the list is received.
8. The method according to claim 1, wherein The first signaling includes information for updating the list.
9. The method according to claim 1, wherein The first signaling is a MAC-CE, the state is included in the first M states of the MAC-CE, and a reference signal corresponding to any state of the MAC-CE is in the list.
10. The method according to claim 7, wherein: The new reference signal in the second signaling is added to the list during the second time unit.
11. The method according to claim 1, wherein The list is included in the information reported by the user equipment.
12. The method according to claim 11, wherein The information reported by the user equipment is included in one of a third signaling, a channel state information CSI report, and uplink control information UCI.
13. The method according to claim 1, wherein The list includes reference signals corresponding to an activated transmission configuration indication (TCI) state of a channel, the channel including one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) in a control resource set (CORESET).
14. The method according to claim 1, wherein The reference signal corresponding to the inactive transmission configuration indication (TCI) state does not correspond to any activation state of the channel.
15. The method according to claim 1, wherein The first reference signal in the list is associated with a parameter, where the parameter includes at least one of a physical cell identifier (PCI), a frequency location, and a measurement object identifier (measureObjectID).
16. The method according to any one of claims 1 to 15, wherein: The reference signal includes a reference signal in the state or a quasi-co-located QCL-ed reference signal in the state.
17. The method according to any one of claims 1 to 15, wherein: The state includes one of a transmission configuration indication TCI state, a state of a selected sounding reference signal SRS resource set, and a state of spatial relationship information.
18. The method according to any one of claims 1 to 15, wherein: Each of the first to third time units corresponds to one of a slot, a subslot, an OFDM symbol, or a subframe.
19. The method according to any one of claims 1 to 15, wherein: The first signaling corresponds to a MAC control element MAC-CE or RRC signaling.
20. The method according to any one of claims 1 to 15, wherein: The list is associated with a second parameter, where the second parameter includes one of the following parameters: a CORESET pool, a serving cell, a serving cell group, the user equipment, and a type of the first signaling.
21. The method according to claim 20, wherein In case the second parameter corresponding to the list is deactivated or reconfigured, the list is empty.
22. The method according to any one of claims 1 to 15, wherein: The list includes reference signals selected by the user equipment during a physical random access channel (PRACH) procedure.
23. The method according to any one of claims 1 to 15, wherein: The second time unit is determined based on at least one of the following: a type of the new beam state, a type of a target element of the state, and a type of a reference resource in the state.
24. The method according to any one of claims 1 to 15, wherein: The second time unit is determined to satisfy at least one of the following: i) the state is applied to the element starting from the time unit, and the time unit is not later than the second time unit, ii) the state is determined as a candidate state of the element starting from the time unit, and the time unit is not later than the second time unit, iii) the user equipment is capable of receiving a PDCCH carrying the state of the element, and the element is not later than the second time unit, iv) receiving an element with the state starting from the time unit, and the time unit is not later than the second time unit, v) receiving a PDCCH carrying the state of the element starting from the time unit, and the time unit is not later than the second time unit.
25. The method according to any one of claims 1 to 15, wherein: If the first signaling includes multiple other states, the method also includes: multiple other second time units, each corresponding to the multiple other states, and wherein the first signaling is applied starting from a time unit that is no later than the second time unit and the last second time unit in the multiple other second time units.
26. The method according to any one of claims 1 to 15, wherein: The first signaling is applied starting from a time unit that is no earlier than a third time unit, wherein the third time unit is i) when the first signaling is MAC-CE, a predetermined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel PDSCH carrying the first signaling, and ii) when the first signaling is RRC, a predetermined time length from the first time unit.
27. The method according to any one of claims 1 to 15, wherein: The state is a new state in the first signaling.
28. The method according to any one of claims 1 to 15, wherein: Before the user equipment is configured with a cellular radio network temporary identifier C-RNTI and before the user equipment transmits a first preamble, the list is empty.
29. A method of wireless communication, the method being performed by a user equipment and comprising: determining a list of one or more reference signals, wherein a maximum number of the one or more reference signals included in the list is determined based on a capability reported by the user equipment; During a first time unit, receiving first signaling including a state, the state including a quasi-co-located QCL reference signal, the state being a new state in the first signaling; determining a relationship between the reference signal corresponding to the state and the list by determining whether the reference signal corresponding to the state is in the list; determining a type of the state based on whether channel state information about resources corresponding to the state has been reported by the user equipment; as well as determining a second time unit associated with the state based on the relationship and the type of the state, wherein, based on the relationship and the type of the state, determining a second time unit associated with the state comprises determining, based on the relationship, whether a time period during which the user equipment waits for a first transmission of the reference signal is included in a time interval between the first time unit and the second time unit; wherein, in response to determining that the reference signal is in the list, the time period during which the user equipment waits for the first transmission of the reference signal is not included in the time interval, and in response to determining that the reference signal is not in the list, the time period during which the user equipment waits for the first transmission of the reference signal is included in the time interval, and wherein, in response to determining that the reference signal is not in the list, the reference signal is added to the list in the second time unit, and a reference signal corresponding to an inactive transmission configuration indication (TCI) state of a channel is deleted from the list, and The first signaling is applied starting from a time unit no later than the second time unit, and the reference signal added to the list and the one or more reference signals are at least one of a synchronization signal block SSB and a tracking reference signal TRS of a channel state information reference signal CSI-RS for tracking.
30. The method according to claim 29, wherein The channel state information is used for the state.
31. The method according to claim 29, wherein The channel state information is based on a reference signal in the state or a quasi-co-located QCL-ed reference signal in the state.
32. The method of claim 29, wherein: In a case where the user equipment has reported the channel state information before the first signaling, the type of the state is determined to be known, and / or in a case where the user equipment has not reported the channel state information before the first signaling, the type of the new state is determined to be unknown.
33. The method according to any one of claims 29 to 32, wherein: The channel state information includes at least one of the following: L1-RSRP, L1-SINR, L3-RSRP, L3-SINR, PMI, RI, and CQI.
34. The method according to any one of claims 29 to 32, wherein: The state includes one of a transmission configuration indication TCI state, a state of a selected sounding reference signal SRS resource set, and a state of spatial relationship information.
35. The method according to any one of claims 29 to 32, wherein: The second time unit is determined to satisfy at least one of the following: i) the state is applied to the element starting from the time unit, and the time unit is not later than the second time unit, ii) the state is determined as a candidate state of the element starting from the time unit, and the time unit is not later than the second time unit, iii) the user equipment is capable of receiving a PDCCH carrying the state of the element, and the element is not later than the second time unit, iv) receiving an element with the state starting from the time unit, and the time unit is not later than the second time unit, v) receiving a PDCCH carrying the state of the element starting from the time unit, and the time unit is not later than the second time unit.
36. A wireless communication method, the method being performed by a network device and comprising: determining a list of one or more reference signals, wherein a maximum number of the one or more reference signals included in the list is determined based on a capability received from a user equipment; During a first time unit, transmitting first signaling including a status to a user equipment, the status including a quasi-co-site QCL reference signal; as well as determining a relationship between the reference signal corresponding to the state and the list by determining whether the reference signal corresponding to the state is in the list; as well as determining a second time unit associated with the state or the first signaling based on the relationship, The determining of the second time unit includes determining, based on the relationship, whether a time period during which the user equipment waits for the first transmission of the reference signal is included in a time interval between the first time unit and the second time unit. wherein, in response to determining that the reference signal is in the list, the time period during which the user equipment waits for the first transmission of the reference signal is not included in the time interval, and in response to determining that the reference signal is not in the list, the time period during which the user equipment waits for the first transmission of the reference signal is included in the time interval, and wherein, in response to determining that the reference signal is not in the list, the reference signal is added to the list at the second time unit, and wherein the first signaling is applied from a time unit no later than the second time unit, and a reference signal corresponding to an inactive transmission configuration indication (TCI) state of a channel is deleted from the list, and The first signaling is applied starting from a time unit no later than the second time unit, and the reference signal added to the list and the one or more reference signals are at least one of a synchronization signal block SSB and a tracking reference signal TRS of a channel state information reference signal CSI-RS for tracking.
37. The method according to claim 36, wherein The relationship is determined during a third time unit, which is: i) a predetermined time length from a time unit including a HARQ-ACK for a physical downlink shared channel PDSCH carrying the first signaling, ii) a predetermined time length from the first time unit.
38. The method of claim 36, further comprising: In case the reference signal is not included in the list, an element having the state is transmitted after the first transmission of the reference signal, the element including the channel or the signal.
39. The method according to claim 36, further comprising: In case the reference signal is included in the list, an element having the state is transmitted without waiting for first transmission of the reference signal, the element including the channel or the signal.
40. The method of claim 36, wherein The first transmission of the reference signal corresponding to the state occurs after the user equipment decodes the first signaling, or after the user equipment completes L1 channel state measurement.
41. The method of claim 36, further comprising: Second signaling including the list is transmitted.
42. The method according to claim 41, wherein The first signaling includes information for updating the list.
43. The method according to claim 42, wherein The first signaling is a MAC-CE, the state is included in the first M states of the MAC-CE, and a reference signal corresponding to any state of the MAC-CE is in the list.
44. The method of claim 36, wherein The list is included in information received from the user equipment.
45. The method of claim 44, wherein: The information received from the user equipment is included in one of a third signaling, a channel state information CSI report, and uplink control information UCI.
46. The method of claim 44, wherein During a time interval predefined or determined based on the capability of the user equipment, a reference signal in the information received from the user equipment is in the list.
47. The method of claim 36, wherein: The list includes reference signals corresponding to an activated TCI state of a channel, and the channel includes one of a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH in a control resource set CORESET.
48. The method of claim 36, wherein Reference signals corresponding to the inactive state of a channel are deleted from the list.
49. The method according to claim 48, wherein The reference signal corresponding to the inactive TCI state does not correspond to any active state of the channel.
50. The method of claim 36, wherein The reference signals in the list are associated with parameters, where the parameters include at least one of a physical cell identifier (PCI), a frequency location, or a measurement object identifier (measureObjectID).
51. The method of any one of claims 36 to 50, wherein: The second time unit is determined to satisfy at least one of the following: i) applying the state to the element starting from the time unit, the time unit is not later than the second time unit, ii) the state is determined as a candidate state of the element starting from the time unit, the time unit is not later than the second time unit, iii) determining that the user equipment is capable of receiving the PDCCH carrying the state of the element, the element is not later than the second time unit, iv) transmitting the element with the state starting from the time unit, the time unit is not later than the second time unit, v) transmitting the PDCCH carrying the state of the element starting from the time unit, the time unit is not later than the second time unit.
52. The method of any one of claims 36 to 50, wherein: The first signaling is applied starting from a time unit that is no earlier than a third time unit, wherein the third time unit is i) when the first signaling is MAC-CE, a predetermined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel PDSCH carrying the first signaling, and ii) when the first signaling is RRC, a predetermined time length from the first time unit.
53. A communication device comprising a processor and a memory, the processor being configured to read instructions from the memory to implement the method according to any one of claims 1 to 52.
54. A computer readable medium having stored thereon code which, when executed, causes a processor to implement the method of any one of claims 1 to 52.
Citation Information
Patent Citations
Transmission configuration indication (TCI) state switching for 5g nr
US20200229161A1