Secondary cell activation method and device, storage medium, terminal and network equipment

Abstract

A secondary cell activation method and device, a storage medium, a terminal, and a network device are provided. The method includes receiving a message for activating a secondary cell and a message for activating a TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first bursts and the second bursts; receiving the TRS for AGC adjustment and fine synchronization; and activating the secondary cell. Thus, a method for SCell activation is provided, and a configuration method for a TRS pattern required when a UE is triggered to activate a secondary cell is provided to assist the UE in quickly implementing SCell activation. The method can adapt to different scenarios of secondary cells, thereby reducing the time delay of SCell activation and improving the utilization of resources.

Description

Technical Field

[0001] This invention relates to the field of communications, and more particularly to a method and apparatus for activating secondary cells, a storage medium, a terminal, and network equipment. Background Technology

[0002] Carrier aggregation can be used to expand multiple continuous or discrete Long Term Evolution (LTE) system carriers into a single carrier that meets the requirements of an LTE-Advanced system. User Equipment (UE) can be configured to receive and transmit data in multiple cells, including one primary cell (PCell) and multiple secondary cells (SCells). Secondary cells are primarily responsible for providing additional radio resources for data transmission; they can be active or deactivated.

[0003] Base stations can manage the status of secondary cells according to actual conditions, thereby enabling more efficient use of system radio resources and improving system throughput. For example, a base station can temporarily deactivate a secondary cell of a UE to reduce radio resource consumption and can quickly restore the secondary cell to an active state when needed by the UE, thus improving data transmission rates. When a secondary cell is active, it consumes more power from the UE; therefore, appropriately deactivating a secondary cell can also save UE power consumption to some extent, which is beneficial for extending UE usage time. However, the activation delay of SCell in existing technologies is too long, resulting in resource waste. Summary of the Invention

[0004] The technical problem solved by this invention is how to reduce the latency of SCell activation in order to improve resource utilization.

[0005] To address the aforementioned problems, embodiments of the present invention provide a secondary cell activation method, the method comprising: receiving a message to activate the secondary cell and a message to activate a TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first bursts and the second bursts; receiving the TRS to perform AGC adjustment and fine synchronization; and activating the secondary cell.

[0006] Optionally, receiving the TRS includes receiving the TRS according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

[0007] Optionally, the number of the first burst, the number of the second burst, and the length of the time domain gap are preset values.

[0008] Optionally, before receiving the message to activate the secondary cell and the message to activate the TRS, the method further includes: receiving the configuration information of the TRS, wherein the configuration information of the TRS includes the number of first bursts and / or the number of second bursts in the TRS.

[0009] Optionally, the configuration information of the TRS may also include the length of the time domain gap.

[0010] Optionally, the configuration information of the TRS includes the configuration information of the CSI-RS resource set, and receiving the configuration information of the TRS includes: receiving the configuration information of the CSI-RS resource set; and determining the number of the first burst by the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

[0011] Optionally, the configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time domain gaps.

[0012] Optionally, the configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources in the CSI-RS resource set. After receiving the configuration information of the CSI-RS resource set, the method further includes: determining the number of the second burst based on the number of CSI-RS resources; and determining the length of the time-domain gap based on the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources.

[0013] Optionally, the configuration information of the TRS is carried by the MAC CE.

[0014] Optionally, the message to activate the secondary cell is carried through a first MAC CE, and the message to activate the TRS is carried through a second MAC CE; wherein, the second MAC CE includes a CSI-RS resource set identifier and an identifier of the associated serving cell.

[0015] Optionally, the second MAC CE may also include the number of the first burst and / or the number of the second burst.

[0016] Optionally, the second MAC CE may further include a transmission configuration indication identifier and / or a bandwidth identifier; wherein the transmission configuration indication identifier is associated with a CSI-RS resource or an SSB.

[0017] Optionally, the message to activate the secondary cell and the message to activate the TRS are carried by a third MAC CE.

[0018] Optionally, the third MAC CE includes information about the active secondary cell and the CSI-RS resource set ID that each active secondary cell manages sequentially.

[0019] Optionally, the third MAC CE may further include the number of the first burst and / or the number of the second burst.

[0020] Optionally, the second MAC CE may further include a transmission configuration indication identifier and / or a bandwidth identifier; wherein the transmission configuration indication identifier is associated with a CSI-RS resource or an SSB.

[0021] This invention also provides a method for activating a secondary cell, the method comprising: sending a message to a terminal to activate the secondary cell and a message to activate a TRS, so that the terminal receives the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell; wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first bursts and the second bursts.

[0022] Optionally, the terminal receives the TRS according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

[0023] Optionally, the number of the first burst, the number of the second burst, and the length of the time domain gap are preset values.

[0024] Optionally, before sending the message to the terminal to activate the secondary cell and the message to activate the TRS, the method further includes: sending the TRS configuration information to the terminal, wherein the TRS configuration information includes the number of first bursts and / or the number of second bursts in the TRS.

[0025] Optionally, the configuration information of the TRS may also include the length of the time domain gap.

[0026] Optionally, the TRS configuration information includes the configuration information of the CSI-RS resource set, and sending the TRS configuration information to the terminal includes: sending the configuration information of the CSI-RS resource set to the terminal so that the terminal determines the number of the first burst through the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

[0027] Optionally, the configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time domain gaps.

[0028] Optionally, the configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources in the CSI-RS resource set, so that after receiving the configuration information of the CSI-RS resource set, the terminal determines the number of the second burst based on the number of CSI-RS resources, and determines the length of the time-domain gap based on the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources.

[0029] Optionally, the configuration information of the TRS is carried by the MAC CE.

[0030] Optionally, the message to activate the secondary cell is carried through a first MAC CE, and the message to activate the TRS is carried through a second MAC CE; wherein, the second MAC CE includes a CSI-RS resource set identifier and an identifier of the associated serving cell.

[0031] Optionally, the second MAC CE may also include the number of the first burst and / or the number of the second burst.

[0032] Optionally, the second MAC CE may further include a transmission configuration indication identifier and / or a bandwidth identifier; wherein the transmission configuration indication identifier is associated with a CSI-RS resource or an SSB.

[0033] Optionally, the message to activate the secondary cell and the message to activate the TRS are carried by a third MAC CE.

[0034] Optionally, the third MAC CE includes information about the active secondary cell and the CSI-RS resource set ID that each active secondary cell manages sequentially.

[0035] Optionally, the third MAC CE may further include the number of the first burst and / or the number of the second burst.

[0036] Optionally, the second MAC CE may further include a transmission configuration indication identifier and / or a bandwidth identifier; wherein the transmission configuration indication identifier is associated with a CSI-RS resource or an SSB.

[0037] This invention also provides a secondary cell activation device, the device comprising: an activation message receiving module for receiving a message to activate the secondary cell and a message to activate a TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first bursts and the second bursts; an activation preparation module for receiving the TRS to perform AGC adjustment and fine synchronization; and an activation module for activating the secondary cell.

[0038] This invention also provides a secondary cell activation device, the device comprising: an activation message sending module, configured to send a message activating the secondary cell and a message activating a TRS to a terminal, so that the terminal receives the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell; wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst.

[0039] This invention also provides a storage medium storing a computer program thereon, which, when run by a processor, executes the steps of any of the secondary cell activation methods described above.

[0040] This invention also provides a terminal, including a secondary cell activation device, or including a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the processor executes the steps of any secondary cell activation method when running the computer program.

[0041] This invention also provides a network device, including a secondary cell activation device, or a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the processor executes the steps of any secondary cell activation method when running the computer program.

[0042] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0043] This invention provides a secondary cell activation method, comprising: receiving a message to activate the secondary cell and a message to activate a TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and a time-domain gap exists between the first bursts and the second bursts; receiving the TRS to perform AGC adjustment and fine synchronization; and activating the secondary cell. Compared with the prior art, the solution of this invention provides a SCell activation method and a method for configuring the TRS pattern required when triggering and the UE performs the above operations, to assist the UE in quickly achieving SCell activation, and can adapt to the situation of secondary cells in different scenarios. Therefore, it can reduce the latency of SCell activation and improve resource utilization.

[0044] Furthermore, the network can send TRS configuration information to the UE, thereby flexibly adjusting the time-domain resource structure of the TRS to save transmission resources.

[0045] Furthermore, the configuration information of TRS can be carried through MAC CE, and Scell ​​and TRS can be activated through two MAC CEs respectively. These two MAC CEs can be carried through the same PDSCH.

[0046] Furthermore, both Scell ​​and TRS can be activated simultaneously through a single MAC CE, and TRS configuration information can also be indicated. That is, indication information can be added to the original MAC CE that activates Scell ​​to reduce signaling overhead and signaling intervals, and Scell ​​can also be quickly activated. Attached Figure Description

[0047] Figure 1 This is a time-based schematic diagram of SCell activation based on MAC-CE in the prior art;

[0048] Figure 2 This is a structural diagram of an 8-bit SCell activation / deactivation MAC CE in the prior art;

[0049] Figure 3 This is a structural diagram of an activation / deactivation MAC CE for a 32-bit SCell in the prior art;

[0050] Figure 4 This is a flowchart illustrating a secondary cell activation method according to an embodiment of the present invention;

[0051] Figure 5 This is a schematic diagram of a time-domain resource corresponding to a TRS according to an embodiment of the present invention;

[0052] Figure 6 This is a schematic diagram illustrating the configuration information of a CSI-RS resource set according to an embodiment of the present invention;

[0053] Figure 7 This is a schematic diagram illustrating the configuration information of another CSI-RS resource set according to an embodiment of the present invention;

[0054] Figure 8 This is a schematic diagram of a first type of second MAC CE according to an embodiment of the present invention;

[0055] Figure 9 This is a schematic diagram of a second type of second MAC CE according to an embodiment of the present invention;

[0056] Figure 10 This is a schematic diagram of a third type of second MAC CE according to an embodiment of the present invention;

[0057] Figure 11 This is a schematic diagram of the first type of third MAC CE according to an embodiment of the present invention;

[0058] Figure 12 This is a schematic diagram of a second type of third MAC CE according to an embodiment of the present invention;

[0059] Figure 13 This is a schematic diagram of a third type of third MAC CE according to an embodiment of the present invention;

[0060] Figure 14 This is a flowchart illustrating another auxiliary cell activation method according to an embodiment of the present invention;

[0061] Figure 15 This is a schematic diagram of the structure of a secondary cell activation device according to an embodiment of the present invention;

[0062] Figure 16 This is a schematic diagram of another auxiliary cell activation device according to an embodiment of the present invention. Detailed Implementation

[0063] As described in the background section, the activation latency of SCell in the prior art is too long, resulting in a waste of resources.

[0064] Specifically, please see Figure 1 , Figure 1 This is a time diagram illustrating a SCell activation based on MAC-CE in existing technology. The activation process of the secondary cell is based on the Media Access Control Control Element (MAC CE), and the deactivation process can also be based on MAC CE. When the UE receives an activation command (carried by the Physical Downlink Control Channel (PDCCH)) in slot n, it indicates that it needs to receive the Physical Downlink Control Channel (PDSCH) containing MAC CE in slot n+k0, and that it needs to send back an acknowledgment message (ACK) in slot n+[T]. Starting from slot n, the UE is required to... HARQ +T activation_time +T CSI_Reporting Complete the activation and deactivation of SCell. (T is involved in this process.) HARQ T is the time when the UE receives the PDSCH and sends an acknowledgment message. CSI_Reporting The time CSI reported. (T) activation_time This refers to the SCell activation delay. If the SCell is known and belongs to the FR1 band (its frequency range is 450MHz-6GHz, also known as the sub-6GHz band), T activation_time The determination methods include: for a known cell, the time when the UE is ready to receive the SCell activation message, such as... Figure 1 As shown, the SCell activation delay varies depending on the cell. Specifically, T activation_time =T SMTC_SCell+2slots+Z; For a known cell, SCell activation delay T activation_time＝ 2*T SMTC_MAX +2*T SMTC_SCell +2slots+Z; where the value of Z varies depending on the cell, and its specific value can be found in existing protocols. Furthermore, the delay algorithms for the FR1 and FR2 bands (whose frequency range is 24250MHz-52600MHz, also known as Above-6GHz or millimeter wave) are different. The actual time when a known cell and an unknown cell receive the SCell activation message is determined by the time they each receive the Channel Quality Indication (CQI).

[0065] The length of the MAC-CE control message used for secondary cell activation and deactivation is fixed at 8 bits or 32 bits, such as... Figure 2 and Figure 3 As shown, Figure 2 This is a structural diagram of an 8-bit SCell activation / deactivation MAC CE in the prior art. This MAC CE includes an octet (Oct), denoted as Oct1. The 8 bits consist of a 7-bit C field and a 1-bit R field. During the secondary cell configuration process, the system assigns corresponding index values ​​to different secondary cells. The 7 C fields in the MAC control message (in...) Figure 2 The values ​​C1 through C7 are used to indicate the activation / deactivation status of the corresponding secondary cell. When C1 is set to 1, it means the secondary cell with index 1 is activated; when C2 is set to 1, it means the secondary cell with index 2 is activated; and when C1 is set to 0, it means the secondary cell with index 1 is deactivated. The R field in the MAC control message (… Figure 2 The value of R is used as a reserved bit and is usually set to 0. Figure 3 This is a structural diagram of a 32-bit SCell activation / deactivation MAC CE in the prior art. The MAC CE includes four octets (Oct), denoted as Oct1 to Oct4. The 31 C fields in the MAC control message (in...) Figure 3 C1 to C 31 The symbol () is used to indicate the activation / deactivation status of the corresponding secondary cell. For details, please refer to [reference needed]. Figure 2 Settings, R domain ( Figure 3 The value of R is used as a reserved bit and is usually set to 0.

[0066] The New Radio (NR) Tracking Reference Signal (TRS), also known as the Channel State Information Reference Signal (CSI-RS), is a tracking reference signal when the TRS-info parameter in the CSI-RS configuration information of the Radio Resource Control (RRC) signaling is set to 1. It is used by the UE to track time / frequency offsets by measuring the CSI-RS when receiving downlink data transmission, in order to track and compensate for these offsets.

[0067] For the FR1 and FR2 bands, the time-frequency resources of TRS have the following characteristics (see Protocol 38.214 for details): TRS consists of four periodic groups of Non-Zero Power Channel State Information Reference Signal resources (NZP-CSI-RSresources), configured with the parameter trs-Info. This group can be distributed across two consecutive time slots, with each time slot mapping two CSI-RS resources, and the time-domain interval between these two CSI-RS resources is a fixed four symbols. For example, within frequency range 1, the two symbols occupied in one time slot can be {4,8}, {5,9}, or {6,10} (f). Alternatively, the group can be located within one time slot, with each time slot mapping two CSI-RS resources, and the time-domain interval is a fixed two symbols. The four symbols in these two time slots, or the two symbols in one time slot, are called a burst. Each CSI-RS resource has one port and a port density of 3, and its bandwidth is min{52, BWP size} or equal to the BWP size.

[0068] In existing technologies, the activation delay of SCell is too long. Proposals have suggested sending a temporary reference signal to facilitate AGC adjustment and fine synchronization by the UE, thus saving the waiting time for SSB. However, the inventors discovered that the number of TRS symbols required for AGC adjustment and fine synchronization varies depending on the secondary cell's condition (e.g., Scell ​​is in FR1 or FR2, Scell ​​is a known or unknown cell, whether other activated cells exist within the FR of the Scell). Furthermore, the interval between AGC adjustment and fine synchronization also differs. In existing technologies, the time domain position of TRS is relatively fixed, making it impossible to adaptively configure different TRS patterns to suit the AGC adjustment and fine synchronization operations required for rapid Scell ​​activation in different scenarios.

[0069] Please see Figure 4 This invention provides a method for activating a secondary cell. Figure 4 The method can be executed by a terminal, such as a UE, and includes steps S401 to S403, which are detailed below.

[0070] Step S401: Receive a message to activate the secondary cell and a message to activate the TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst.

[0071] Step S402: Receive the TRS to perform AGC adjustment and fine synchronization;

[0072] Step S403: Activate the secondary cell.

[0073] In this embodiment of the invention, when the base station sends an activation secondary cell (SCell) message to the UE, automatic gain control (AGC) adjustment and fine time / frequency synchronization (also known as finer synchronization) are performed through a tracking reference signal (TRS). The fine synchronization achieves time-frequency synchronization between the UE and network equipment (such as the base station). In the 5G NR system, fine synchronization is achieved through a secondary synchronization signal (SSS), the specific implementation of which can be found in existing 5G NR protocols. Optionally, the activation TRS message and the activation secondary cell message are carried through the same PDSCH.

[0074] Specifically, if a network device (taking a base station as an example below) needs to activate one or more SCells, it sends a message to the UE to activate the secondary cell and a message to activate the TRS. The pattern (or structure) of the time-domain resources corresponding to the activated TRS includes: N bursts + time-domain gaps + M bursts, where the N bursts before the time-domain gaps are denoted as the N first bursts, and the bursts after the time-domain gaps are denoted as the second bursts. M and N are positive integers greater than or equal to 1.

[0075] A burst corresponds to two symbols within one slot or four symbols within two slots.

[0076] Optionally, after receiving the message to activate TRS, the UE performs AGC adjustment using one of the time-domain resources corresponding to the first burst and the second burst, based on the time-domain structure corresponding to the TRS. It then performs fine synchronization using the other of the time-domain resources corresponding to the first burst and the second burst. After completing the AGC adjustment and fine synchronization, the UE activates the one or more secondary cells according to the existing protocol scheme.

[0077] Optionally, the TRS signal is an aperiodic signal.

[0078] Therefore, a method for SCell activation is provided, along with a method for configuring the TRS pattern required when triggering and performing the above operations by the UE, to assist the UE in quickly achieving SCell activation, which can adapt to the situation of secondary cells in different scenarios.

[0079] In one embodiment, Figure 4 The step S402 of receiving the TRS includes: receiving the TRS according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

[0080] The configuration information for the TRS is used to determine the pattern (or structure) of the time-domain resources corresponding to the TRS. This configuration information can be set by the protocol or configured by higher-layer signaling.

[0081] Optionally, the number of the first burst, the number of the second burst, and the length of the time domain gap are preset values.

[0082] That is, the specific values ​​of M and N can be fixed preset values, which can be determined according to the protocol or configured through higher-layer signaling. For example, the time-domain resource pattern corresponding to TRS is 1 bursts + gap + 1 burst, 2 bursts + gap + 1 burst, or 2 bursts + gap + 2 bursts, or 3 bursts + gap + 1 burst. The length of the time-domain gap is fixed. Please refer to [link / reference]. Figure 5 , Figure 5 This is a schematic diagram of a time-domain resource corresponding to a TRS according to an embodiment of the present invention. The TRS includes 1 burst + gap + 1 burst, the length of the gap is 1 slot, and each burst includes 4 symbols in two slots.

[0083] In one embodiment, please see again Figure 4 Before receiving the message to activate the secondary cell and the message to activate the TRS in step S401, the method further includes: receiving the configuration information of the TRS, wherein the configuration information of the TRS includes the number of first bursts and / or the number of second bursts in the TRS.

[0084] In other words, the TRS configuration information can also be sent from the base station to the UE. Before activating the TRS, the base station can configure the time-domain resource structure of the TRS to be activated for the UE, thereby flexibly adjusting the time-domain resource structure of the TRS according to the needs of each activated TRS, so as to save transmission resources.

[0085] For example, the TRS structure is N bursts + fixed / configurable gap length + M bursts. Here, N = 1, 2, or 3, and M = 1 or 2. When the gap length is fixed, such as when set to 1 or 2 slots, there is no need to configure the gap length.

[0086] Alternatively, the length of the time-domain gap can be included in the configuration information of the TRS to make the length of the time-domain gap configurable.

[0087] In this embodiment, the network can send TRS configuration information to the UE, thereby flexibly adjusting the time-domain resource structure of the TRS to save transmission resources.

[0088] In one embodiment, the configuration information of the TRS includes the configuration information of the CSI-RS resource set, and receiving the configuration information of the TRS includes: receiving the configuration information of the CSI-RS resource set; and determining the number of the first burst by the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

[0089] That is, the configuration information of the TRS can be carried in the configuration information of the CSI-RS resource set. For example, the value of N mentioned above can be carried in the configuration information of the CSI-RS resource set. Please refer to [link to relevant documentation]. Figure 6 , Figure 6 This is a schematic diagram of the configuration information of a CSI-RS resource set according to an embodiment of the present invention. In box 601, the value of N is indicated by the parameter burstnum.

[0090] Optionally, the configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time-domain interval. That is, in Figure 6 The configuration information of the CSI-RS resource set shown includes the number of second bursts (i.e., the value of M) and / or the parameters corresponding to the time domain gaps and the values ​​corresponding to the parameters.

[0091] In one embodiment, the configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources in the CSI-RS resource set. After receiving the configuration information of the CSI-RS resource set, the method further includes: determining the number of the second burst based on the number of CSI-RS resources; and determining the length of the time-domain gap based on the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources.

[0092] Please see Figure 7 , Figure 7 This is a schematic diagram illustrating the configuration information of another CSI-RS resource set according to an embodiment of the present invention. When configuring the CSI-RS resource set in higher-layer signaling (or higher-layer parameters), the value of N is indicated by the CSI-RS resource (corresponding parameter nzp-CSI-RS-Resources). For example, if nzp-CSI-RS-Resources contains 4×N (or 2×N) nzp-CSI-RSresources, the value of N can be obtained. The higher-layer parameter aperiodicTriggeringOffset is used to indicate the starting slot of the first burst in the TRS. Two new parameters, aperiodicTriggeringOffset-r17 and nzp-CSI-RS-Resources-r17, are added to the signaling configuring the CSI-RS resource set (see...). Figure 7In box 701), aperiodicTriggeringOffset-r17 indicates the starting time slot of the first burst after a time domain gap in a TRS, and nzp-CSI-RS-Resources-r17 indicates the number of M. For example, nzp-CSI-RS-Resources-r17 indicates that there are 4×M (or 2×M) nzp-CSI-RS resources in the CSI-RS resources (nzp-CSI-RS-Resources), so that the UE can determine the value of M.

[0093] For example, the value of N is implicitly obtained from the number of nzp-CSI-RS resources contained in the parameter nzp-CSI-RS-Resources, representing the number of time slots occupied (denoted by Q); the gap is obtained by subtracting (-)aperiodicTriggeringOffset from (-)Q using aperiodicTriggeringOffset-r17; the number of bursts configured in nzp-CSI-RS-Resources-r17 (i.e., the value of M) is implicitly obtained from the number of time slots occupied by the resources within nzp-CSI-RS-Resources. The starting position of the second burst is determined according to aperiodicTriggeringOffset-r17.

[0094] In one embodiment, the configuration information of the TRS is carried by the MAC CE. That is, the number of the first burst, the number of the second burst, and the length of the time domain gap can all be carried by the MAC CE and configured by the base station to the UE.

[0095] In one embodiment, the message to activate the secondary cell is carried through a first MAC CE, and the message to activate the TRS is carried through a second MAC CE.

[0096] Specifically, when two MAC CEs are used to activate Scell ​​and TRS respectively, the MAC CE for activating Scell ​​is the same as in the prior art. There is currently no relevant design for the MAC CE for activating TRS (i.e., the second MAC CE), but the following techniques can be used:

[0097] 1. The second MAC CE is used to activate TRS. The second MAC CE includes the CSI-RS resource set identifier (ID) and the identifier (ID) of the associated serving cell.

[0098] 2. The second MAC CE is used to activate TRS. The second MAC CE includes a CSI-RS resource set identifier (ID), an associated serving cell identifier (ID), and the number of the first burst and / or the number of the second burst.

[0099] 3. The second MAC CE is used to activate TRS. The second MAC CE includes the CSI-RS resource set identifier (ID), the identifier of the associated serving cell (ID), and also the transport configuration indication identifier and / or bandwidth identifier (Bandwith Part ID, BWP ID).

[0100] 4. The second MAC CE is used to activate TRS. The second MAC CE includes a CSI-RS resource set identifier (ID), an associated serving cell identifier (ID), the number of the first burst and / or the number of the second burst, and a transmission configuration indicator identifier and / or a bandwidth identifier. The transmission configuration indicator identifier is associated with a CSI-RS resource or SSB.

[0101] If the second MAC CE does not contain a BWP ID, it can be associated by default with the first BWP that enters after activation in this serving cell, as determined by the existing protocol.

[0102] Please see Figures 8 to 10 It provides schematic diagrams for three types of second MAC CEs, but it cannot cover the structure of all second MAC CEs. The A / D bits indicate whether the second MAC CE carries information such as N / M / CSI-RS resource set identifiers. The N and M bits represent the values ​​of N and M in the time-domain resource structure corresponding to the TRS. Oct1, Oct2, ..., OctF, OctF+1 represent 1 to F+1 Octs, where F is a positive integer. The TCI-state ID represents the transmission configuration indicator. The value of this bit can determine whether the second MAC CE is associated with a CSI-RS resource or SSB, allowing for decoding of the second MAC CE by associating it with a CSI-RS resource or SSB, or carrying other information. R is a reserved bit.

[0103] In this embodiment, Scell ​​and TRS are activated by two MAC CEs respectively, and these two MAC CEs can be carried by the same PDSCH.

[0104] In one embodiment, the message to activate the secondary cell and the message to activate the TRS are carried through a third MAC CE. That is, when using one MAC CE (i.e., the third MAC CE) to simultaneously activate the Scell ​​and TRS, the following design can be adopted:

[0105] This MAC CE contains SCell activation information (refer to the existing MAC CE design for SCell activation), and the CSI-RS resource set ID sequentially associated with each activated SCell. Optionally, the third MAC CE includes information on activated secondary cells and the CSI-RS resource set ID sequentially managed by each activated secondary cell. Optionally, the third MAC CE also includes the number of the first burst and / or the number of the second burst. Optionally, the second MAC CE also includes a transmission configuration indicator and / or a bandwidth indicator; wherein the transmission configuration indicator is associated with a CSI-RS resource or SSB.

[0106] Please see Figures 11 to 13 It provides schematic diagrams for three types of third MAC CEs, but it cannot cover the structure of all third MAC CEs. Among them, C1 to C... 31 Position Figure 3 The 31 C fields in the MAC control message. Other parameters can be found in [reference]. Figures 8 to 10 The explanation will not be repeated here.

[0107] In this embodiment, Scell ​​and TRS can be activated simultaneously using a single MAC CE, and TRS configuration information can also be indicated. That is, indication information can be added to the original MAC CE that activates Scell ​​to reduce signaling overhead and signaling intervals, and Scell ​​can be quickly triggered for activation.

[0108] Please see Figure 14 This invention also provides a secondary cell activation method, which is executed by a network device (such as a base station or access point (AP)) to trigger a terminal (such as a UE) to activate the SCell. The method includes:

[0109] Step S1401: Send a message to the terminal to activate the secondary cell and a message to activate the TRS, so that the terminal receives the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell; wherein, the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst.

[0110] In one embodiment, the terminal receives the TRS according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

[0111] In one embodiment, the number of the first burst, the number of the second burst, and the length of the time-domain gap are preset values.

[0112] In one embodiment, before sending the message to the terminal to activate the secondary cell and the message to activate the TRS, the method further includes: sending the TRS configuration information to the terminal, wherein the TRS configuration information includes the number of first bursts and / or the number of second bursts in the TRS.

[0113] In one embodiment, the configuration information of the TRS also includes the length of the time domain gap.

[0114] In one embodiment, the configuration information of the TRS includes the configuration information of the CSI-RS resource set, and sending the configuration information of the TRS to the terminal includes: sending the configuration information of the CSI-RS resource set to the terminal so that the terminal determines the number of the first burst through the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

[0115] In one embodiment, the configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time-domain gaps.

[0116] In one embodiment, the configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources in the CSI-RS resource set, so that after receiving the configuration information of the CSI-RS resource set, the terminal determines the number of the second burst based on the number of CSI-RS resources, and determines the length of the time-domain gap based on the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources.

[0117] In one embodiment, the configuration information of the TRS is carried by the MAC CE.

[0118] In one embodiment, the message to activate the secondary cell is carried through a first MAC CE, and the message to activate the TRS is carried through a second MAC CE; wherein the second MAC CE includes a CSI-RS resource set identifier and an identifier of the associated serving cell.

[0119] In one embodiment, the second MAC CE further includes the number of the first burst and / or the number of the second burst.

[0120] In one embodiment, the second MAC CE further includes a transport configuration indicator identifier and / or a bandwidth identifier; wherein the transport configuration indicator identifier is associated with a CSI-RS resource or an SSB.

[0121] In one embodiment, the message to activate the secondary cell and the message to activate the TRS are carried by a third MAC CE.

[0122] In one embodiment, the third MAC CE includes information about the active secondary cell and the CSI-RS resource set ID managed sequentially by each active secondary cell.

[0123] In one embodiment, the third MAC CE further includes the number of the first burst and / or the number of the second burst.

[0124] In one embodiment, the second MAC CE further includes a transport configuration indicator identifier and / or a bandwidth identifier; wherein the transport configuration indicator identifier is associated with a CSI-RS resource or an SSB.

[0125] Figure 14 The secondary cell activation method performed by the network device and Figure 4 The secondary cell activation methods executed by the middle terminal correspond to each other, regarding Figure 14 For more information on its working principles and methods, please refer to [link / reference]. Figure 4 The relevant descriptions in the text will not be repeated here.

[0126] Please see Figure 15 This invention also provides a secondary cell activation device 150, comprising: an activation message receiving module 1501, configured to receive a message for activating a secondary cell and a message for activating a TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst; an activation preparation module 1502, configured to receive the TRS for AGC adjustment and fine synchronization; and an activation module 1503, configured to activate the secondary cell.

[0127] For more information on the working principle and operation mode of the auxiliary cell activation device 150, please refer to [link / reference needed]. Figure 4 The details regarding the activation method for secondary cells will not be repeated here.

[0128] In specific implementations, the aforementioned secondary cell activation device 150 may correspond to a chip in the terminal that has secondary cell activation function, or to a chip that has data processing function, such as a system-on-a-chip (SOC), baseband chip, etc.; or to a chip module in the terminal that includes a chip with secondary cell activation function; or to a chip module that has a chip with data processing function, or to the terminal.

[0129] Please see Figure 16 The present invention also provides a secondary cell activation device 160, comprising: a configuration module 1601, configured to activate a message sending module, configured to send a message to a terminal to activate the secondary cell and a message to activate a TRS, so that the terminal receives the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell; wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst.

[0130] For more information on the working principle and operation mode of the auxiliary cell activation device 160, please refer to [link / reference needed]. Figure 14 The details regarding the activation method for secondary cells will not be repeated here.

[0131] In specific implementations, the aforementioned secondary cell activation device 160 may correspond to a chip in a network device that has a secondary cell activation function, or to a chip that has a data processing function, such as a system-on-a-chip (SOC), a baseband chip, etc.; or to a chip module in a network device that includes a chip with a secondary cell activation function; or to a chip module that has a data processing function; or to a network device.

[0132] In specific implementation, the modules / units included in the various devices and products described in the above embodiments can be software modules / units, hardware modules / units, or a combination of both.

[0133] For example, for various devices and products applied to or integrated into a chip, each module / unit can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits; for various devices and products applied to or integrated into a chip module, each module / unit can be implemented using hardware methods such as circuits, and different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The components can be implemented using software programs that run on the processor integrated within the chip module. The remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into the terminal, each of its components / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or in different components within the terminal. Alternatively, at least some modules / units can be implemented using software programs that run on the processor integrated within the terminal, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits.

[0134] This invention also provides a storage medium storing a computer program, which is executed by a processor. Figure 4 or Figure 14 The steps of the method are described above. The storage medium can be a computer-readable storage medium, such as non-volatile or non-transitory memory, and may also include optical discs, hard disk drives, solid-state drives, etc.

[0135] This invention also provides a terminal. The terminal may include... Figure 15 The auxiliary cell activation device 150 may include a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the processor executes the computer program. Figure 4 The steps of the auxiliary cell activation method.

[0136] This invention also provides a network device, the network device including... Figure 16 The auxiliary cell activation device 160 may include a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the processor executes the computer program. Figure 14 The steps of the auxiliary cell activation method.

[0137] Specifically, in this embodiment of the invention, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0138] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0139] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0140] In the embodiments of this application, "multiple" refers to two or more.

[0141] The descriptions of "first," "second," etc., appearing in the embodiments of this application are for illustrative purposes and to distinguish the objects being described. They have no order and do not indicate any special limitation on the number of devices in the embodiments of this application, nor do they constitute any limitation on the embodiments of this application.

[0142] In this application, the term "connection" refers to various connection methods, such as direct connection or indirect connection, to achieve communication between devices. This application does not impose any limitations on this.

[0143] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A method for activating a secondary cell, characterized in that, The method includes: Receive activation messages for secondary cells and TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst; Receive the TRS for AGC adjustment and fine synchronization; Activate the secondary cell; The activation messages for the secondary cell and TRS are carried through a MAC CE, which includes information about the activated secondary cell and the CSI-RS resource set ID sequentially associated with each activated secondary cell.

2. The method according to claim 1, characterized in that, Receiving the TRS includes: The TRS is received according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

3. The method according to claim 2, characterized in that, The number of the first burst, the number of the second burst, and the length of the time domain gap are preset values.

4. The method according to claim 2, characterized in that, Before receiving the message to activate the secondary cell and the message to activate the TRS, the process also includes: Receive the configuration information of the TRS, which includes the number of first bursts and / or the number of second bursts in the TRS.

5. The method according to claim 4, characterized in that, The configuration information of the TRS also includes the length of the time domain gap.

6. The method according to claim 4 or 5, characterized in that, The configuration information of the TRS includes the configuration information of the CSI-RS resource set, and receiving the configuration information of the TRS includes: Receive the configuration information of the CSI-RS resource set; The number of the first burst is determined by the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

7. The method according to claim 6, characterized in that, The configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time-domain gaps.

8. The method according to claim 7, characterized in that, The configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time domain gap and the number of CSI-RS resources in the CSI-RS resource set. After receiving the configuration information of the CSI-RS resource set, the process further includes: The number of the second burst is determined based on the number of CSI-RS resources; The length of the time domain gap is determined based on the starting time slot of the first burst after the time domain gap and the number of CSI-RS resources.

9. The method according to claim 4, characterized in that, The configuration information of the TRS is carried by the MAC CE.

10. The method according to claim 9, characterized in that, The message to activate the secondary cell is carried through the first MAC CE, and the message to activate the TRS is carried through the second MAC CE. The second MAC CE includes a CSI-RS resource set identifier and an identifier of the associated serving cell.

11. The method according to claim 10, characterized in that, The second MAC CE also includes the number of the first burst and / or the number of the second burst.

12. The method according to claim 10 or 11, characterized in that, The second MAC CE also includes a transmission configuration indication identifier and / or a bandwidth identifier; The transmission configuration indicator is associated with a CSI-RS resource or SSB.

13. The method according to claim 1, characterized in that, The third MAC CE also includes the number of the first burst and / or the number of the second burst.

14. A method for activating a secondary cell, characterized in that, The method includes: Send activation messages for the secondary cell and TRS to the terminal so that the terminal receives the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell; Wherein, the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst; The activation messages for the secondary cell and TRS are carried through a MAC CE, which includes information about activating the secondary cell and the CSI-RS resource set ID sequentially associated with each secondary cell.

15. The method according to claim 14, characterized in that, The terminal receives the TRS according to the configuration information of the TRS, wherein the configuration information of the TRS includes at least one or more of the following parameters: the number of the first burst, the number of the second burst, and the length of the time domain gap.

16. The method according to claim 15, characterized in that, The number of the first burst, the number of the second burst, and the length of the time domain gap are preset values.

17. The method according to claim 15, characterized in that, Before sending the message to the terminal to activate the secondary cell and the message to activate TRS, the method further includes: The configuration information of the TRS is sent to the terminal. The configuration information of the TRS includes the number of first bursts and / or the number of second bursts in the TRS.

18. The method according to claim 17, characterized in that, The configuration information of the TRS also includes the length of the time domain gap.

19. The method according to claim 17 or 18, characterized in that, The TRS configuration information includes the configuration information of the CSI-RS resource set. Sending the TRS configuration information to the terminal includes: The configuration information of the CSI-RS resource set is sent to the terminal so that the terminal can determine the number of the first bursts by using the number of CSI-RS resources in the configuration information of the CSI-RS resource set.

20. The method according to claim 19, characterized in that, The configuration information of the CSI-RS resource set is also used to indicate the number of second bursts and / or the time-domain gaps.

21. The method according to claim 20, characterized in that, The configuration information of the CSI-RS resource set includes the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources in the CSI-RS resource set, so that after receiving the configuration information of the CSI-RS resource set, the terminal can determine the number of the second burst based on the number of CSI-RS resources, and determine the length of the time-domain gap based on the starting time slot of the first burst after the time-domain gap and the number of CSI-RS resources.

22. The method according to claim 17, characterized in that, The configuration information of the TRS is carried by the MAC CE.

23. The method according to claim 22, characterized in that, The message to activate the secondary cell is carried through the first MAC CE, and the message to activate the TRS is carried through the second MAC CE. The second MAC CE includes a CSI-RS resource set identifier and an identifier of the associated serving cell.

24. The method according to claim 23, characterized in that, The second MAC CE also includes the number of the first burst and / or the number of the second burst.

25. The method according to claim 23 or 24, characterized in that, The second MAC CE also includes a transmission configuration indication identifier and / or a bandwidth identifier; The transmission configuration indicator is associated with a CSI-RS resource or SSB.

26. The method according to claim 14, characterized in that, The third MAC CE also includes the number of the first burst and / or the number of the second burst.

27. A secondary cell activation device, characterized in that, The device includes: An activation message receiving module is used to receive activation messages from secondary cells and TRS, wherein the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst; The preparation module is activated to receive the TRS for AGC adjustment and fine synchronization. Activation module, used to activate the secondary cell; The activation messages for the secondary cell and TRS are carried through a MAC CE, which includes information about the activated secondary cell and the CSI-RS resource set ID sequentially associated with each activated secondary cell.

28. A secondary cell activation device, characterized in that, The device includes: The activation message sending module is used to send activation messages of the secondary cell and TRS to the terminal, so that the terminal can receive the TRS to perform AGC adjustment and fine synchronization and activate the secondary cell. Wherein, the TRS corresponds to one or more first bursts and one or more second bursts, and there is a time domain gap between the first burst and the second burst; The activation messages for the secondary cell and TRS are carried through a MAC CE, which includes information about the activated secondary cell and the CSI-RS resource set ID sequentially associated with each activated secondary cell.

29. A storage medium having a computer program stored thereon, characterized in that, When the computer program is run by a processor, it performs the method according to any one of claims 1 to 13, or performs the steps of the method according to any one of claims 14 to 26.

30. A terminal, comprising the apparatus of claim 28, or comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the method according to any one of claims 1 to 13.

Images