CN116471637A

CN116471637A - Cell switching time determining method, device and processor readable storage medium

Info

Publication number: CN116471637A
Application number: CN202210028253.4A
Authority: CN
Inventors: 司倩倩; 高雪娟; 邢艳萍
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2023-07-21

Abstract

The application provides a method, a device and a processor readable storage medium for determining time of cell switching, which are executed by User Equipment (UE), wherein the method comprises the following steps: determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell of the physical uplink control channel switching auxiliary cell and predefined information or higher-layer configuration information; and determining a target PUCCH transmission cell according to the effective time or the failure time, and sending the PUCCH to the network node through the target PUCCH transmission cell. When the state of the PUCCH sSCell is switched, the method can determine the effective time or the ineffective time of the PUCCH cell switching, ensures that the understanding of the network node and the UE on the PUCCH transmission carrier wave is consistent, and accordingly smoothly transmits uplink control information UCI information.

Description

Cell switching time determining method, device and processor readable storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and apparatus for determining time of cell handover, and a processor readable storage medium.

Background

In release 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology) NR (New RAT) Rel-17, PUCCH (Physical Uplink Control Channel ) Cell switching is supported, but when an SCell (Secondary Cell) that can transmit PUCCH enters a deactivated or dormant state from an active state, PUCCH transmission cannot be performed on the SCell, that is, a PUCCH switch SCell (PUCCH switching SCell), and at this time, the PUCCH Cell switching mode fails, and PUCCH is transmitted on a PCell (Primary Cell)/PSCell (Primary Cell)/PUCCH SCell.

Disclosure of Invention

The present application provides a method, an apparatus and a processor readable storage medium for determining a time of a cell handover, which are used for solving the above technical drawbacks.

In a first aspect, a method for determining a time of a cell handover is provided, which is performed by a user equipment UE, and includes:

determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell of the physical uplink control channel switching auxiliary cell and predefined information or higher-layer configuration information;

and determining a target PUCCH transmission cell according to the effective time or the failure time, and sending the PUCCH to the network node through the target PUCCH transmission cell.

In one embodiment, determining the effective time or the dead time of the PUCCH cell handover according to the state handover of the PUCCH scell and the predefined information or the higher layer configuration information includes at least one of the following:

if the state of the PUCCH sSCell is switched to the state from the deactivated state to the activated state, determining the effective time of the PUCCH cell switching according to predefined information or higher-layer configuration information; or (b)

If the state of the PUCCH sSCell is switched to the state from the activated state to the deactivated state, determining the failure time of the PUCCH cell switching according to predefined information or high-level configuration information; or (b)

If the state of the PUCCH sSCell is switched to the state from the active state to the dormant state, determining the failure time of the PUCCH cell switching according to predefined information or higher-layer configuration information; or (b)

If the state of the PUCCH scell is switched from the dormant state to the active state, determining the effective time of PUCCH cell switching according to predefined information or higher layer configuration information.

In one embodiment, if the state of the PUCCH scell is switched from the deactivated state to the activated state, determining the effective time of the PUCCH cell switching according to the predefined information or the higher layer configuration information includes at least one of the following:

if the UE receives the activation signaling in the time slot n, the time slot is setIs determined as the effective time of the PUCCH cell switch, wherein T _HARQ Is the time from the reception of the physical downlink shared channel PDSCH corresponding to the activation signaling to the completion of the feedback of the corresponding hybrid automatic repeat request acknowledgement HARQ-ACK by the UE, T _{activation_time} For the activation time delay of the SCell of the auxiliary cell, T _{CSI_Reporting} For reporting time delay of Channel State Information (CSI), NRslotlength is the length of a new air interface time slot; or (b)

If the UE receives the activation signaling in the time slot n, the time slot is setDetermining the effective time of PUCCH cell switching; or (b)

And determining the effective time of the PUCCH cell switching according to the time of the effective channel state information valid CSI reported by the UE.

In one embodiment, if the state of the PUCCH scell is switched from the active state to the deactivated state, determining the failure time of the PUCCH cell switching according to the predefined information or the higher layer configuration information includes at least one of the following:

determining the end position of a time slot n where the HARQ-ACK feedback of the deactivation signaling is positioned as the failure time of PUCCH cell switching; or (b)

Determining the ending position of X milliseconds or Y time slots after the time slot n of HARQ-ACK feedback of an activation signaling as the failure time of PUCCH cell switching, wherein X and Y are respectively predefined values or higher-layer configured values, and X and Y are integers greater than or equal to 0; or (b)

Determining the ending position of a time slot n overtime by a deactivation timer of the secondary cell as the failure time of PUCCH cell switching; or (b)

And determining the ending position of X milliseconds or Y time slots after the time slot n overtime by the deactivation timer of the secondary cell as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values of higher-layer configuration, and X and Y are integers which are larger than or equal to 0.

In one embodiment, if the state of the PUCCH scell is switched to the PUCCH scell from the active state to the dormant state, determining the failure time of the PUCCH cell switching according to the predefined information or the higher layer configuration information includes at least one of the following:

if downlink control information DCI indicating the sleep mode of the PUCCH sSCell is in a time slot n, determining n+offset as the failure time of the switching of the PUCCH cell, wherein the offset is the time slot interval between the DCI and the HARQ-ACK corresponding to the DCI or is a predefined value; or (b)

And determining the ending position of X milliseconds or Y time slots after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values configured by a high layer, and X and Y are integers which are larger than or equal to 0.

In one embodiment, if the state of the PUCCH scell is switched from the dormant state to the active state, determining the effective time of the PUCCH cell switching according to the predefined information or the higher layer configuration information includes at least one of the following:

determining a time T1 after a time slot n in which DCI of the indication PUCCH sSCell dormancy is positioned as an effective time of PUCCH cell switching, wherein the time T1 is a predefined time or a time determined based on high-level configuration; or (b)

Determining the time T2 after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located as the effective time of the PUCCH cell switching, wherein the time T2 is a predefined time or a time determined based on high-level configuration; or (b)

Slot m and slot n+t3×2 ^u In (a) and (b)The latest time slot is determined as the effective time of the PUCCH cell switching, wherein the time slot m is the time slot where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned, and n+T3×2 ^u Is a T3 time after time slot n where DCI of PUCCH sSCell dormancy is indicated, T3 time is a predefined time or a time determined based on a higher layer configuration, and u is a subcarrier spacing configuration.

In one embodiment, before the effective time of PUCCH cell handover, PUCCH is transmitted on at least one of the primary cell PCell, primary secondary cell PSCel, PUCCH SCell;

after the effective time of the PUCCH cell switching, determining a PUCCH transmission cell based on the mode of the PUCCH cell switching;

before the failure time of the PUCCH cell switching, determining a PUCCH transmission cell based on the mode of the PUCCH cell switching;

after a failure time of PUCCH cell switching, PUCCH is transmitted on at least one of PCell, PSCel, PUCCH SCell.

In a second aspect, a method for determining a time of a cell handover is provided, performed by a network node, comprising:

determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell and predefined information or higher-layer configuration information;

and determining a target PUCCH transmission cell according to the effective time or the failure time, and receiving the PUCCH transmitted by the UE through the target PUCCH transmission cell.

Slot m and slot n+t3×2 ^u The latest time slot in (a) is determined as the effective time of the PUCCH cell switching, wherein the time slot m is the time slot in which the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned, and n+T3×2 ^u Is a T3 time after time slot n where DCI of PUCCH sSCell dormancy is indicated, T3 time is a predefined time or a time determined based on a higher layer configuration, and u is a subcarrier spacing configuration.

In one embodiment, before the effective time of PUCCH cell handover, PUCCH is received on at least one of the primary cell PCell, primary secondary cell PSCel, PUCCH SCell;

after a failure time of PUCCH cell switching, PUCCH is received on at least one of PCell, PSCel, PUCCH SCell.

In a third aspect, a time determining apparatus for cell handover is provided, applied to a UE, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

In a fourth aspect, a time determining apparatus for cell handover is provided, applied to a network node, including a memory, a transceiver, and a processor:

After the effective time of the PUCCH cell switching, determining a PUCCH transmission cell based on the mode of the PUCCH cell switching; or (b)

Before the failure time of the PUCCH cell switching, determining a PUCCH transmission cell based on the mode of the PUCCH cell switching; or (b)

In a fifth aspect, the present application provides a time determining apparatus for cell handover, applied to a UE, including:

the first processing unit is used for determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell and the predefined information or the higher-layer configuration information;

and the second processing unit is used for determining a target PUCCH transmission cell according to the effective time or the dead time and sending the PUCCH to the network node through the target PUCCH transmission cell.

In a sixth aspect, the present application provides a time determining apparatus for cell handover, applied to a network node, including:

the third processing unit is used for determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell and the predefined information or the higher-layer configuration information;

and the fourth processing unit is used for determining a target PUCCH transmission cell according to the effective time or the dead time and receiving the PUCCH transmitted by the UE through the target PUCCH transmission cell.

In a seventh aspect, a processor readable storage medium is provided, wherein the processor readable storage medium stores a computer program for causing a processor to perform the methods of the first and second aspects.

The technical scheme provided by the embodiment of the application has at least the following beneficial effects:

the effective time or the ineffective time of the PUCCH cell switching can be determined, and the understanding consistency of the network node and the UE on the PUCCH transmission carrier wave is ensured, so that uplink control information UCI information is smoothly transmitted.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments of the present application will be briefly described below.

FIG. 1 is a schematic diagram of a system architecture provided in an embodiment of the present application;

fig. 2 is a flow chart of a method for determining time of cell handover according to an embodiment of the present application;

fig. 3 is a schematic diagram of a SCell from deactivated to activated state provided in an embodiment of the present application;

Fig. 4 is a schematic diagram of an SCell from activated to deactivated state provided in an embodiment of the present application;

fig. 5 is a flowchart of another method for determining time of cell handover according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a time determining apparatus for cell handover according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a time determining apparatus for cell handover according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a time determining apparatus for cell handover according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a time determining apparatus for cell handover according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The current problem is that when the SCell that can transmit PUCCH enters a deactivated/dormant state from an active state, it is unclear from what time the PUCCH cell switching mode fails; when the SCell that can transmit PUCCH enters the active state from the deactivated/dormant state, it is unclear from what time the PUCCH cell switching mode is in effect.

In order to better understand and illustrate aspects of embodiments of the present disclosure, some technical terms related to the embodiments of the present disclosure are briefly described below.

(1) PUCCH cell handover

In release 5G NR Rel-15/16, PUCCH can only be transmitted on PCell/PSCell/PUCCH SCell and not on other scells. The NRs have URLLC (Ultra-Reliable and Low Latency Communication, low latency high reliable communication) service, the requirement of the URLLC service on latency is very low, but considering that uplink transmission and downlink transmission on unpaired spectrum share the same spectrum resource, uplink and downlink TDM (Time-Division Multiplexing, time division multiplexing technology) transmission is needed, so in a cell group, a cell configured with a transmission PUCCH may be limited by uplink and downlink matching, and available uplink resources (such as a position meeting processing latency is just a Time domain position of downlink transmission) cannot be found at a Time domain position meeting processing Time of downlink transmission, at this Time, if the available uplink resources on PCell/PSCell/PUCCH SCell are reached, transmission latency is caused, and the performance of the URLLC is affected. Therefore, the NR Rel-17 version supports PUCCH cell switching, i.e. PUCCH is switched from the PCell/PSCell/PUCCH SCell originally configured for transmission to another SCell for transmission, so that there is no need to schedule insufficient resources or resource conflicts on the original cell, resulting in a need of delaying PUCCH transmission, and this is called as PUCCH SCell for another cell capable of transmitting PUCCH.

Dynamic PUCCH cell switching and semi-static PUCCH cell switching are supported in NR. When the SCell is in a deactivated or dormant state, PUCCH transmission cannot be performed on the SCell, and at this time, the PUCCH cell switching scheme is disabled, and the standard specifies PUCCH transmission on the PCell/PSCell/PUCCH SCell.

(2) SCell activation/deactivation

The SCell activation/deactivation procedure is defined in NR, and the SCell needs to be activated by using MAC CE signaling when the SCell performs data transmission, otherwise, the SCell is deactivated by using MAC (Media Access Control) CE (Control Element) signaling.

The time from deactivation to activation of the SCell defined by NR TS38.133 is T _HARQ ，T _{activation_time} ，T _{CSI_Reporting} The sum of the three parts; wherein T is _HARQ Is the time from the reception of PDSCH transmitting MAC CE to the completion of feedback of corresponding HARQ-ACK (HARQ-ACK, hybrid Automatic Repeat request-ACKnowledgment, hybrid automatic repeat request acknowledgement); t (T) _{activation_time} Activating time delay for the SCell, including time required by UE to analyze MAC CE, power on of auxiliary cell radio frequency, AGC and time/frequency tracking; t (T) _{CSI_Reporting} And (5) reporting time delay for the CSI (Channel State Information ), wherein the time corresponds to the time for receiving, processing and reporting the CSI-RS of the channel state information reference signal of the UE. I.e. when the UE receives the activation signaling in slot n, the UE should be in slot at the latest Completing an activation process; for the procedure of the MAC CE triggered SCell from activated to deactivated, NR TS38.133 defines that when the UE receives the deactivation signaling in slot n, the UE should be at the latest in slot + ->Completing the deactivation process; for SCell activation-to-deactivation procedure triggered by sCellDeactivationTimer, NR TS38.133 defines that when the UE expires in slot n, the UE should be at the latest in slot +.>The deactivation process is completed.

(3) SCell dormancy

SCell dormancy refers to that the UE does not perform PDCCH listening on the secondary cell, nor does it perform uplink transmission on the secondary cell, such as sending PRACH (Physical Random Access Channel ), PUSCH (Physical Uplink Share Channel, uplink shared physical channel), PUCCH, sounding reference signal SRS, etc., but continues other operations, such as CSI measurement, AGC, and beam management. After the secondary cell is activated, rel-16 supports the UE to switch between sleep and normal activation according to the indication of DCI (Downlink Control Information ). A sleep behavior switching method based on BWP (Bandwidth Part) switching is adopted, at least two BWP needs to be configured in the secondary cell, one of which is the sleep BWP, and the method of BWP switching is used to switch to the sleep BWP when the UE is required to perform the sleep behavior. NR TS38.133 defines the time T required for BWP handoff involving dormant BWP _{dormantBWPswitchDelay} After receiving the DCI indicating the BWP handover, the UE needs to complete the BWP handover within the time. And, the UE cannot be in the handover timeTransmitting or receiving is performed on the SCell performing the handover.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

A schematic diagram of a system architecture provided in an embodiment of the present application is shown in FIG. 1, where the system architecture includes: UE, such as UE110 in fig. 1, and a network node, such as network node 120 in fig. 1. The network node is deployed in an access network, for example, network node 120 is deployed in an access network NG-RAN (New Generation-Radio Access Network, new Generation radio access network) in a 5G system. The UE and the network node communicate with each other via some kind of air interface technology, e.g. via cellular technology.

The UE according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. Types of UEs include cell phones, vehicle user terminals, tablet computers, laptops, personal digital assistants, mobile internet appliances, wearable devices, and the like.

The network node to which the embodiments of the present application relate may be a base station, which may include a plurality of cells serving a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network node is operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may comprise an Internet Protocol (IP) communication network. The network node may also coordinate attribute management for the air interface. For example, the network node according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network nodes may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application provides a method for determining time of cell switching, which is executed by a UE, and a flow chart of the method is shown in fig. 2, and the method includes:

s201, determining the effective time or the dead time of the PUCCH cell switching according to the state switching of the PUCCH sSCell and the predefined information or the higher layer configuration information.

In particular, the UE may be configured with two or more TDD carrier aggregation transmissions and configured with semi-static PUCCH cell switching or dynamic PUCCH cell switching.

The state switching of the PUCCH scsell includes at least one of:

PUCCH scsell from deactivated state to activated state; or (b)

PUCCH scsell from active state to inactive state; or (b)

PUCCH scsell from active state to dormant state; or (b)

PUCCH scsell goes from dormant state to active state.

S202, determining a target PUCCH transmission cell according to the effective time or the failure time, and sending PUCCH to the network node through the target PUCCH transmission cell.

Specifically, before the effective time of the PUCCH cell handover, transmitting PUCCH on at least one of a primary cell PCell, a primary secondary cell PSCell, and a PUCCH SCell; after the effective time of the PUCCH cell switching, determining a target PUCCH transmission cell based on the mode of the PUCCH cell switching; before the failure time of the PUCCH cell switching, determining a target PUCCH transmission cell based on the mode of the PUCCH cell switching; after a failure time of PUCCH cell switching, PUCCH is transmitted on at least one of PCell, PSCel, PUCCH SCell.

In the embodiment of the invention, the effective time or the ineffective time of the PUCCH cell switching can be determined, and the understanding consistency of the network node and the UE on the PUCCH transmission carrier wave is ensured, so that uplink control information UCI information is smoothly transmitted.

Specifically, for the UE configured with PUCCH cell switching, when the state of the PUCCH scsell is switched, determining an effective time or a dead time of PUCCH cell switching based on predefined or based on higher layer configuration information; the state switching of the PUCCH scsell includes at least one of:

PUCCH scsell from deactivated state to activated state; or (b)

PUCCH scsell from active state to inactive state; or (b)

PUCCH scsell from active state to dormant state; or (b)

PUCCH scsell goes from dormant state to active state.

If the UE receives the activation signaling in the time slot n, the time slot is setDetermining the effective time of PUCCH cell switching;

Specifically, when the PUCCH scsell is from a deactivated state to an activated state, determining an effective time of PUCCH cell switching based on predefined or based on higher layer configuration information, comprising the following ways:

(Mode)and (3) a step of: when the UE receives the activation signaling in the time slot n, the UE transmits the time slot The end time of (2) is taken as the effective time of PUCCH cell switching; wherein T is _HARQ The time from the reception of PDSCH transmitting MAC CE to the completion of the feedback of corresponding HARQ-ACK is used by UE; t (T) _{activation_time} For SCell activation delay, T _{CSI_Reporting} And reporting time delay for the CSI.

Mode two: when the UE receives the activation signaling in the time slot n, the UE transmits the time slot The end time of (2) is taken as the effective time of the PUCCH cell switching.

Mode three: determining a first use mode or a second use mode based on whether the PUCCH sSCell is a valid TA of a valid timing advance;

if the timing advance is invalid, using a mode I;

if it is valid TA, then mode two is used.

Mode four: determining the effective time of PUCCH cell switching based on the time of reporting valid CSI by UE;

If the UE reports the valid CSI of the PUCCH sSCell in the time slot m, starting to take effect time of PUCCH cell switching in the first time slot after the time slot m+Xms/Yslot; where X/Y is a predefined value or a value of a higher layer configuration, X/Y is an integer greater than or equal to 0.

The UE transmits PUCCH on PCell/PSCell/PUCCH SCell before the time of validity, and determines a PUCCH transmission cell based on the PUCCH cell switching manner after the time of validity.

In one embodiment, the UE is configured with two or more TDD carrier aggregation transmissions and semi-static PUCCH cell switching, when the SCell transitions from the deactivated state to the activated state, it needs to be determined when to start the semi-static PUCCH cell switching mode available. In this embodiment, the SCell is PUCCH SCell.

For example, in the scenario in fig. 3, when the UE receives the SCell activation signaling in the slot 0, since the SCell is in the deactivated state, and the PUCCH is always transmitted on the PCell, the HARQ-ACK corresponding to the PDSCH carrying the MAC CE is transmitted on the PCell, without considering the semi-static PUCCH cell switching pattern (pattern), where pattern is 0 for transmitting the PUCCH on the PCell and pattern is 1 for transmitting the PUCCH on the SCell. The effective time for semi-static PUCCH cell handover is determined based on one of the following:

Mode one: when the UE receives the activation signaling in slot n, slotThe end time of (2) is taken as the effective time of PUCCH cell switching; let->In the embodiment, the UE receives the activation signaling in the time slot 0 corresponding to the time of 8 time slots, uses the PCell to transmit the PUCCH in the time slot 8 and the time slots before as the effective time of PUCCH cell switching at the end time of the time slot 8, and determines the PUCCH transmission cell based on the switching pattern in the time slots after the time slot 8.

Mode two: when the UE receives the activation signaling in the time slot n, the UE transmits the time slot The end time of (2) is taken as the effective time of PUCCH cell switching; let->Corresponding to the time of 5 slots, in this embodiment, the UE receives the activation signaling in slot 0, and uses the activation signaling as PUCCH cell switching at the end time of slot 5The active time, PUCCH is transmitted using PCell in slot 5 and the preceding slots, and PUCCH transmission cell is determined based on the handover pattern in the slots following slot 5.

Mode three: determining a first use mode or a second use mode based on whether the PUCCH sSCell is a valid TA; the UE needs to first determine whether the TA on the PUCCH scell is a valid TA, when the TA on the PUCCH scell is an invalid TA, that is, the PUCCH scell is in an uplink out-of-synchronization state, determine the effective time of PUCCH cell switching by using the first mode, and when the TA on the PUCCH scell is a valid TA, that is, the PUCCH scell is in an uplink in-synchronization state, determine the effective time of PUCCH cell switching by using the second mode.

Mode four: determining the effective time of PUCCH cell switching based on the time of reporting valid CSI by UE; the valid CSI in the scheme refers to valid CSI corresponding to a PUCCH scell, if the UE reports the valid CSI of the PUCCH scell in slot 4, the first slot after slot 4+3ms starts to be the effective time of PUCCH cell handover; assuming that each time slot is 1ms in this embodiment, time slot 8 is the effective time of PUCCH cell switching; the PUCCH is transmitted using PCell before slot 8, and PUCCH transmission cells are determined based on the handover pattern in slot 8 and later.

Specifically, when the PUCCH scsell is from an active state to a deactivated state, if it is a MAC CE triggered deactivation process, determining a failure time of PUCCH cell switching based on predefined or based on higher layer configuration information, comprising the following ways:

mode one: the failure time is the end position of the time slot n where the HARQ-ACK feedback of the deactivation signaling is located (the failure of the PUCCH cell switch starts from the first time slot after the end position);

mode two: the failure time is Xms/Yslot after the time slot n of the HARQ-ACK feedback of the deactivation signaling; wherein X/Y is a predefined value or a value of a higher layer configuration, is an integer greater than or equal to 0; for example, the expiration time is defined as the effective time of PUCCH cell switching 3 ms after the time slot n in which the HARQ-ACK feedback of the deactivation signaling is located, i.e. the PUCCH cell switching expiration starts from the first time slot after the time slot n+3nslotsbframe, μ, where μ is the subcarrier spacing configuration corresponding to the PUCCH transmission on the PCell, or the subcarrier spacing configuration corresponding to the PUCCH on the serving cell in which the HARQ-ACK feedback of the deactivation signaling is located.

Since the SCell needs to start to perform the terminal operation of deactivation after the time slot n, it cannot be guaranteed that the terminal transmits on the SCell after the time slot n, so that it can be specified that PUCCH cannot be transmitted in PUCCH scsell in the time slot between the time slot n where HARQ-ACK feedback is located and the time slot n+xms/Yslot; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

Before the expiration time, the UE determines a PUCCH transmission cell based on the PUCCH cell switching manner, and after the expiration time, the UE transmits PUCCH on PCell/PSCell/PUCCH SCell.

It should be noted that, in the present invention, the validation time or the expiration time is a time point, but the PUCCH cell switching is to determine the PUCCH transmission cell in units of slots, so that the validation time or the expiration time in the present invention may be further understood as that the PUCCH cell switching mode is validated or invalidated when the first slot after the defined time point starts.

Determining the effective time of PUCCH cell handover based on predefined or based on higher layer configuration information if a timer triggered deactivation procedure when PUCCH scsell goes from active state to deactivated state, comprising the following ways:

Mode one: the expiration time is the end position of the time slot n of the sCellDeactivationTimer timeout;

mode two: the failure time is Xms/Yslot after a time slot n overtime of the sCellDeactionTimer; wherein X/Y is a predefined value or a value of a higher layer configuration, is an integer greater than or equal to 0; for example, defining the expiration time as slot n of sCellDeactivationTimer timeout and 3 ms after slot n as the effective time of PUCCH cell switch, i.e. slave slotThe first slot after that starts PUCCH cell switching failure, where μ is the subcarrier spacing configuration of the secondary cell for receiving PDSCH.

Since the SCell needs to start to perform the terminal operation of deactivation after the time slot n, it cannot be guaranteed that the terminal transmits on the SCell after the time slot n, so that it can be specified that PUCCH cannot be transmitted in PUCCH scsell in the time slot between the time slot n and the time slot n+xms/Yslot; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

Before the failure time, the UE determines a PUCCH transmission cell based on a PUCCH cell switching manner; after the expiration time, the UE transmits PUCCH on PCell/PSCell/PUCCH SCell.

In one embodiment, the UE is configured with two or more TDD carrier aggregation transmissions and semi-static PUCCH cell switching, when the SCell transitions from active to inactive state, it needs to determine when to start the semi-static PUCCH cell switching mode failure is not available. In this embodiment, the SCell is PUCCH SCell.

For example, scenario 1 in fig. 4: the UE receives the SCell deactivation signaling in the time slot 0, and determines a PUCCH transmission carrier based on the semi-static PUCCH cell switching pattern because the SCell is in an activated state, so that HARQ-ACK corresponding to the PDSCH carrying the MAC CE is transmitted on the SCell, and determines the failure time of the semi-static PUCCH cell switching based on one of the following modes:

mode one: the failure time of the semi-static PUCCH cell switching is the end position of the time slot n where the HARQ-ACK feedback of the deactivation signaling is located. In this embodiment, when the UE receives the deactivation signaling in the slot 0 and performs the corresponding HARQ-ACK feedback in the slot 2, the UE uses the end time of the slot 2 as the failure time of PUCCH cell switching, determines the PUCCH transmission cell based on the switching pattern in the slot 2 and the previous slots, and uses the PCell to transmit the PUCCH in the slots after the slot 2.

Mode two: the failure time of the semi-static PUCCH cell switching is 3ms after the time slot n where the HARQ-ACK feedback of the deactivation signaling is located; assuming that each time slot is 1ms in the present embodiment, the ue receives the activation signaling in time slot 0 and performs corresponding HARQ-ACK feedback in time slot 2, the end time of time slot 5 is taken as the failure time of PUCCH cell switching, the PUCCH transmission cell is determined based on the switching pattern in time slot 5 and the previous time slots, and the PUCCH is transmitted using the PCell in the time slots after time slot 5.

Further, since the SCell starts to switch from the active state to the inactive state after the slot 2 and cannot transmit, the ue cannot transmit PUCCH in the SCell from the slot 3 to the slot 5; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

For example, scenario 2 in fig. 4: the UE determines in slot 0 that a timer for indicating whether the SCell transitions to a deactivated state expires/times out, and the SCell needs to enter the deactivated state, the failure time of the semi-static PUCCH cell handover is determined based on one of the following ways:

mode one: the failure time of the semi-static PUCCH cell switching is the end position of the time slot n where the HARQ-ACK feedback of the deactivation signaling is located. In this embodiment, when the UE receives the activation signaling in the slot 0 and performs the corresponding HARQ-ACK feedback in the slot 2, the UE uses the end time of the slot 2 as the failure time of PUCCH cell switching, determines the PUCCH transmission cell based on the switching pattern in the slot 2 and the previous slots, and uses the PCell to transmit the PUCCH in the slots after the slot 2.

Mode two: the failure time of the semi-static PUCCH cell switching is 3ms after the time slot n where the HARQ-ACK feedback of the deactivation signaling is located; assuming that each time slot is 1ms in the present embodiment, the ue receives the deactivation signaling in time slot 0 and performs corresponding HARQ-ACK feedback in time slot 2, the end time of time slot 5 is taken as the failure time of PUCCH cell switching, the PUCCH transmission cell is determined based on the switching pattern in time slot 5 and the previous time slots, and the PUCCH is transmitted using the PCell in the time slots after time slot 5. Further, since the SCell starts to switch from the active state to the inactive state after the slot 2 and cannot transmit, the ue cannot transmit PUCCH in the SCell from the slot 3 to the slot 5; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

Mode three: the failure time of the semi-static PUCCH cell handover is the end position of time slot n of sCellDeactivationTimer timeout. In this embodiment, when the UE determines that the timer expires/times out in the slot 0, the UE uses the end time of the slot 0 as the failure time of PUCCH cell switching, determines the PUCCH transmission cell based on the switching pattern in the slot 0 and the previous slots, and uses the PCell to transmit the PUCCH in the slots after the slot 0.

Mode four: the failure time of the semi-static PUCCH cell handover is 3ms after time slot n of sCellDeactivationTimer timeout. Assuming that each time slot is 1ms in this embodiment, the ue determines that the timer expires/times out in time slot 0, then the ue uses the end time of time slot 3 as the failure time of PUCCH cell switching, determines a PUCCH transmission cell based on switching pattern in time slot 3 and the previous time slots, and transmits PUCCH using PCell in the time slots after time slot 3. Further, since the SCell starts to switch from the active state to the inactive state after the slot 0 and cannot transmit, the ue cannot transmit the PUCCH in the SCell from the slot 1 to the slot 3; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

And determining the ending position of X milliseconds or Y time slots after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values configured by a high layer, and X and Y are integers which are larger than or equal to 0. For example, the expiration time is defined as the expiration time of PUCCH cell switching 3 ms after the slot m where the HARQ-ACK corresponding to DCI is located, i.e. from the slotAnd starting the PUCCH cell switching failure in the first time slot, wherein mu is the subcarrier interval configuration corresponding to the PUCCH transmission on the PCell or the subcarrier interval configuration corresponding to the PUCCH on the serving cell where the HARQ-ACK feedback corresponding to the DCI is located.

Specifically, when the PUCCH scell goes from an active state to a dormant state, determining a failure time for PUCCH cell handover based on predefined or based on higher layer configuration information, comprising the following ways:

mode one: the expiration time is n+offset if the DCI of indication PUCCH sSCell dormancy is in slot n, where offset is the slot interval k between the DCI and the corresponding HARQ-ACK or a predefined value;

PUCCH cannot be transmitted in PUCCH scsell in slots between slot n and slot n+offset;

mode two: the failure time is Xms/Yslot after a time slot m where the HARQ-ACK corresponding to DCI of the indication PUCCH sSCell dormancy is located; wherein X/Y is a predefined value or a value of a higher layer configuration, is an integer greater than or equal to 0;

the PUCCH cannot be transmitted in PUCCH scsell in slots between slot n to slot m+xms/Yslot.

The UE does not expect HARQ-ACK corresponding to DCI indicating PUCCH sSCell dormancy to be transmitted on PUCCH scell; before the failure time, the UE determines a PUCCH transmission cell based on a PUCCH cell switching mode, and after the failure time, the UE sends the PUCCH on the PCell/PScell/PUCCH SCell.

In one embodiment, the UE is configured with two or more TDD carrier aggregation transmissions and semi-static PUCCH cell switching, when the SCell transitions from active to dormant state, it needs to be determined when to start the semi-static PUCCH cell switching mode unavailable. In this embodiment, the SCell is PUCCH SCell.

The UE receives DCI signaling indicating SCell dormancy in slot 0, and from the receipt of DCI, the UE cannot transmit and receive on the SCell, and may determine the failure time of semi-static PUCCH cell handover based on one of the following manners:

mode one: the expiration time is n+offset if the DCI of indication PUCCH sSCell dormancy is in slot n, where offset is the slot interval k between the DCI and the corresponding HARQ-ACK or a predefined value. In this embodiment, the UE receives DCI indicating SCell sleep in time slot 0, n+offset is the time slot in which HARQ-ACK corresponding to the DCI is located, and if offset is 4 time slots, the end time of time slot 4 is taken as the failure time of PUCCH cell switching, in time slot 4 and the previous time slots, the PUCCH transmission cell is determined based on the switching pattern, and in the time slots after time slot 2, the PUCCH is transmitted using the PCell.

Further, in this embodiment, since the DCI indicating dormant indicates SCell dormant by indicating that the SCell switches to dormant BWP, the UE cannot continue to transmit and receive on the SCell after receiving the DCI, so that the UE cannot transmit PUCCH on the SCell from the time when the UE receives the DCI indicating SCell dormant to the time slot n+offset; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

Mode two: the failure time is 3ms after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located; in this embodiment, the UE receives DCI indicating SCell sleep in time slot 0, time slot m is a time slot in which HARQ-ACK corresponding to the DCI is located, and assuming that k is 3 time slots, each time slot occupies 1ms, the time slot is used as the failure time of PUCCH cell switching at the end time of time slot 6, in time slot 6 and the previous time slots, a PUCCH transmission cell is determined based on switching pattern, and in the time slots after time slot 6, the PUCCH is transmitted using PCell.

Further, in this embodiment, since the DCI indicating dormant indicates SCell dormant by indicating that the SCell switches to dormant BWP, the UE cannot continue to transmit and receive on the SCell after receiving the DCI, so that the UE cannot transmit PUCCH in the SCell from the time when the UE receives the DCI indicating SCell dormant to time slot n+6; in these slots, if it is determined that PUCCH transmission is required at the SCell based on the semi-static PUCCH cell switching pattern, the corresponding PUCCH transmission is discarded.

In this embodiment, the UE does not expect HARQ-ACK corresponding to DCI indicating PUCCH sSCell dormancy to be transmitted on PUCCH scsell. Since the UE starts to perform dormancy on the SCell after receiving the DCI, the UE cannot continue to transmit PUCCH on the SCell at this time, and the base station should not instruct the HARQ-ACK corresponding to the DCI to be transmitted on the SCell, that is, the PUCCH transmission slot corresponding to the HARQ-ACK determined based on the PUCCH cell switching pattern cannot be the SCell.

Slot m and slot n+t3×2 ^u The latest time slot in (a) is determined as the effective time of the PUCCH cell switching, wherein the time slot m is the time slot in which the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned, and n+T3×2 ^u Is a T3 time after a time slot n in which the DCI of instruction PUCCH sSCell dormancy is located, the T3 time is a predefined time or a time determined based on a higher layer configuration, and u is a subcarrier spacing configuration indicating a subcarrier spacing configuration of a serving cell in which the DCI of instruction PUCCH sSCell dormancy is located.

Specifically, when the PUCCH scsell goes from dormant state to active state, the effective time of PUCCH cell switching is determined based on predefined or based on higher layer configuration information, comprising the following ways:

mode one: the validation time is T1 time after time slot n where DCI of indicator PUCCH sSCell dormancy is located; the T1 time is a predefined time or a time determined based on a higher layer configuration.

Mode two: the effective time is T2 time after a time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located; the T2 time is a predefined time or a time determined based on a higher layer configuration.

Mode three: the effective time is time slot m (+Xms/Yslot) and time slot n+T3.times.2 ^u The latest slot m of (a) is the slot in which the HARQ-ACK corresponding to DCI of PUCCH sSCell dormancy is located, n+t3×2 ^u Is a T3 time after slot n where the DCI of PUCCH sSCell dormancy is indicated, the T3 time being a predefined time or a time determined based on a higher layer configuration.

For example, T1, T2 and T3 may be BWP switch times T defined in TS38.133 including dormant scells _{dormantBWPswitchDelay} 。

In one embodiment, the UE is configured with two or more TDD carrier aggregation transmissions and semi-static PUCCH cell switching, when the SCell transitions from dormant to active state, it needs to be determined when to start the semi-static PUCCH cell switching mode available. In this embodiment, the SCell is PUCCH SCell.

The UE receives DCI signaling indicating that the SCell transitions from sleep to active in time slot 0, and after time T, the UE may transmit and receive on the SCell, and may determine the effective time of the semi-static PUCCH cell handover based on one of the following manners:

mode one: the validation time is T1 time after time slot n where DCI of indicator PUCCH sSCell dormancy is located; the T1 time is a predefined time or a time determined based on higher layer configuration, such as T1 time is 3ms or BWP switch time T including dormant SCell defined in 3GPP protocol TS38.133 _{dormantBWPswitchDelay} Or a larger value of both. In this embodiment, if the UE receives DCI signaling in slot 0 indicating that SCell is switched from sleep to active, T is after slot 0 _{dormantBWPswitchDelay} As the effective time for PUCCH cell switching, T after slot 0 _{dormantBWPswitchDelay} Starting in the first time slot after time, determining a PUCCH transmission cell based on the semi-static PUCCH cell switching pattern, and transmitting the PUCCH by using the PCell before the PUCCH transmission cell is determined.

Mode two: the effective time is T2 time after a time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located; the T2 time is a predefined time or a time determined based on a higher layer configuration, e.g. the T2 time may be 3ms or a BWP switch time T defined in 3GPP protocol TS38.133 and including a dormant SCell _{dormantBWPswitchDelay} . In this embodiment, when the UE receives DCI signaling in time slot 0 indicating that SCell is switched from sleep to active, and performs corresponding HARQ-ACK feedback in time slot 3, T is after time slot 3 _{dormantBWPswitchDelay} As the effective time for PUCCH cell switching, T after slot 3 _{dormantBWPswitchDelay} Starting the first time slot after time, determining based on semi-static PUCCH cell switching patternThe PUCCH transmission cell is fixed, and before that, the PUCCH is transmitted using PCell.

Mode three: the effective time is time slot m (+3 ms) and time slot n+T3×2 ^u Time slot m is the time slot in which the HARQ-ACK corresponding to DCI of instruction PUCCH sSCell dormancy is located, n+t3×2 ^u Is a T3 time after time slot n in which DCI of indication PUCCH sSCell dormancy is located, which T3 may be 3ms or a BWP switch time T defined in 3GPP protocol TS38.133 including dormant SCell _{dormantBWPswitchDelay} . In this embodiment, the UE receives DCI signaling in time slot 0, which indicates that the SCell is switched from sleep to active, performs corresponding HARQ-ACK feedback in time slot 4, assuming that u=0, one time slot occupies 1ms time, and T3×2 ^u Is 1ms time, i.e. 1 slot, so slot m and slot n+t3×2 ^u And (2) determining a PUCCH transmission cell based on the semi-static PUCCH cell switching pattern starting at the first slot after slot 4 as the effective time of PUCCH cell switching at the end of slot 4, and transmitting PUCCH using PCell before that.

It should be noted that, the above embodiment is described only by taking semi-static PUCCH cell switching as an example, and the above method is applicable to dynamic PUCCH cell switching, where the difference is only that, for dynamic PUCCH cell switching, when the PUCCH cell switching scheme is effective, the PUCCH transmission cell is determined based on the indication of DCI; when the PUCCH cell switching scheme fails, the UE does not read the PUCCH cell switching indication field in the DCI any more, and PUCCH transmission is always performed on the PCell/PSCell/PUCCH SCell.

In the embodiment of the present application, for an inter-band TDD CA (Carrier Aggregation ) scenario, a method for determining the effective time of PUCCH cell handover when the state of the PUCCH scell is switched is provided, so that understanding of a base station and a UE on a PUCCH transmission carrier is consistent, and UCI information is smoothly transmitted.

Another method for determining time of cell handover is provided in the embodiments of the present application, which is executed by a network node, and a flowchart of the method is shown in fig. 5, and the method includes:

s301, determining the effective time or the failure time of the PUCCH cell switching according to the state switching of the PUCCH sSCell and the predefined information or the higher layer configuration information.

S302, determining a target PUCCH transmission cell according to the effective time or the failure time, and receiving the PUCCH sent by the UE through the target PUCCH transmission cell.

Specifically, the base station side acts similar to the UE side, that is, the base station and the UE determine the effective time or the dead time of the PUCCH cell switching at the same time, and the UE sends the PUCCH to the base station. If the state of the PUCCH scell is switched, the base station side determines the effective time or the failure time of the PUCCH cell switching based on the same manner as the UE side.

Based on the same inventive concept, the embodiments of the present application also provide a time determining apparatus for cell handover, which is applied to a UE, and a schematic structure diagram of the apparatus is shown in fig. 6, and a transceiver 1200 is used for receiving and transmitting data under the control of a processor 1210.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1210 and various circuits of memory represented by memory 1220, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 1200 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. The user interface 1230 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1210 in performing operations.

Alternatively, the processor 1210 may be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor is configured to execute the method according to the first aspect provided in the embodiment of the present application by calling a computer program stored in the memory according to the obtained executable instructions. The processor and the memory may also be physically separate.

A processor 1210 for reading the computer program in the memory 1220 and performing the following operations:

It should be noted that, the above device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

Based on the same inventive concept, the embodiments of the present application also provide a time determining apparatus for cell handover, applied to a network node, where a schematic structure of the apparatus is shown in fig. 7, and a transceiver 1300 is used for receiving and transmitting data under the control of a processor 1310.

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1310 and various circuits of memory represented by memory 1320, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 1300 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

The processor 1310 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

A processor 1310 for reading the computer program in the memory and performing the following operations:

Based on the same inventive concept as the previous embodiments, the present embodiment further provides a time determining apparatus for cell handover, which is applied to a UE, and a schematic structure diagram of the apparatus is shown in fig. 8, and the time determining apparatus 80 for cell handover includes a first processing unit 801 and a second processing unit 802.

A first processing unit 801, configured to determine an effective time or a dead time of PUCCH cell switching according to state switching of PUCCH scsell and predefined information or higher layer configuration information;

a second processing unit 802, configured to determine a target PUCCH transmission cell according to the effective time or the dead time, and send a PUCCH to the network node through the target PUCCH transmission cell

In one embodiment, the first processing unit 801 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched from the deactivated state to the activated state, the first processing unit 801 is specifically configured to perform at least one of the following:

if the UE receives the activation signaling A in the time slot n, the time slot is setIs determined as the effective time of the PUCCH cell switch, wherein T _HARQ Is the time from the reception of the physical downlink shared channel PDSCH corresponding to the activation signaling to the completion of the feedback of the corresponding hybrid automatic repeat request acknowledgement HARQ-ACK by the UE, T _{activation_time} For the activation time delay of the SCell of the auxiliary cell, T _{CSI_Reporting} For reporting time delay of Channel State Information (CSI), NRslotlength is the length of a new air interface time slot; or (b)

In one embodiment, if the state of the PUCCH scell is switched from the active state to the deactivated state, the first processing unit 801 is specifically configured to perform at least one of the following:

And determining the ending position of X milliseconds or Y time slots after the time slot n overtime by the deactivation timer of the secondary cell as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values of higher-layer configuration, and X and Y are integers which are larger than or equal to 0. In one embodiment, if the state of the PUCCH scell is switched to the PUCCH scell from the active state to the dormant state, the first processing unit 801 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched from the dormant state to the active state, the first processing unit 801 is specifically configured to perform at least one of the following:

Determining the time T2 after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located as the effective time of the PUCCH cell switching, wherein the time T2 is a predefined time or a time determined based on high-level configuration;

Based on the same inventive concept as the previous embodiments, the present embodiment further provides a time determining device for cell handover, which is applied to a network node, and the schematic structure diagram of the device is shown in fig. 9, and the time determining device 90 for cell handover includes a third processing unit 901 and a fourth processing unit 902.

A third processing unit 901, configured to determine an effective time or a dead time of PUCCH cell switching according to the state switching of PUCCH scsell and predefined information or higher layer configuration information;

a fourth processing unit 902, configured to determine a target PUCCH transmission cell, and receive, through the target PUCCH transmission cell, a PUCCH transmitted by the UE.

In one embodiment, the third processing unit 901 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched to the PUCCH scell from the deactivated state to the activated state, the third processing unit 901 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched from the active state to the deactivated state, the third processing unit 901 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched to the PUCCH scell from the active state to the dormant state, the third processing unit 901 is specifically configured to perform at least one of the following:

In one embodiment, if the state of the PUCCH scell is switched to the PUCCH scell from the dormant state to the active state, the third processing unit 901 is specifically configured to perform at least one of the following:

Slot m and slot n+t3×2 ^u Is determined as the effective time of PUCCH cell switch, where slot m is the indication PUCCH sSCell dormTime slot where HARQ-ACK corresponding to DCI of ancy is located, n+T3×2 ^u Is a T3 time after time slot n where DCI of PUCCH sSCell dormancy is indicated, T3 time is a predefined time or a time determined based on a higher layer configuration, and u is a subcarrier spacing configuration.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Based on the same inventive concept, the embodiments of the present application further provide a processor readable storage medium storing a computer program for implementing the steps of any one of the embodiments or any one of the time determining methods for cell handover provided by any one of the alternative implementations of the embodiments of the present application when executed by a processor.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor including, but not limited to, magnetic memory (e.g., floppy disk, hard disk, tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid State Disk (SSD)), etc.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for determining a time of a cell handover, performed by a user equipment UE, comprising:

and determining a target PUCCH transmission cell according to the effective time or the failure time, and sending PUCCH to a network node through the target PUCCH transmission cell.

2. The method according to claim 1, wherein the determining the effective time or the dead time of the PUCCH cell switching according to the state switching of the PUCCH scell and the predefined information or the higher layer configuration information includes at least one of:

if the state of the PUCCH sSCell is switched from the deactivated state to the activated state, determining the effective time of the PUCCH cell switching according to predefined information or high-level configuration information; or (b)

If the state of the PUCCH sSCell is switched to the state from the activation state to the deactivation state of the PUCCH sSCell, determining the failure time of the PUCCH cell switching according to predefined information or high-level configuration information; or (b)

If the state of the PUCCH sSCell is switched to the state from the active state to the dormant state, determining the failure time of the PUCCH cell switching according to predefined information or high-level configuration information; or (b)

And if the state of the PUCCH sSCell is switched to the state from the dormant state to the active state, determining the effective time of the PUCCH cell switching according to predefined information or higher-layer configuration information.

3. The method according to claim 2, wherein if the state of the PUCCH scell is switched from the deactivated state to the activated state, determining the validation time of the PUCCH cell switching according to the predefined information or the higher layer configuration information comprises at least one of:

if the UE receives the activation signaling in the time slot n, the time slot is setIs determined as the effective time of the PUCCH cell switch, wherein T _HARQ The UE receives the physical downlink shared channel PDSCH corresponding to the activation signaling to finish the corresponding hybrid automatic repeat requestTime to acknowledge HARQ-ACK feedback, T _{activation_time} For the activation time delay of the SCell of the auxiliary cell, T _{CSI_Reporting} For reporting time delay of Channel State Information (CSI), NRslotlength is the length of a new air interface time slot; or (b)

4. The method according to claim 2, wherein if the state of the PUCCH scell is switched from the active state to the deactivated state, determining the failure time of the PUCCH cell switching according to the predefined information or the higher layer configuration information comprises at least one of:

Determining the ending position of X milliseconds or Y time slots after the time slot n of HARQ-ACK feedback of an activation signaling as the failure time of PUCCH cell switching, wherein X and Y are respectively predefined values or values of high-level configuration, and the X and the Y are integers which are larger than or equal to 0; or (b)

Determining the ending position of a time slot n overtime by the secondary cell deactivation timer as the failure time of PUCCH cell switching; or (b)

And determining the ending position of X milliseconds or Y time slots after the time slot n overtime by the secondary cell deactivation timer as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values of high-level configuration, and the X and the Y are integers which are larger than or equal to 0.

5. The method according to claim 2, wherein if the state of the PUCCH scell is switched from the active state to the dormant state, determining the failure time of the PUCCH cell switching according to predefined information or higher layer configuration information includes at least one of:

And determining the ending position of the time slot m after the time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCelldormancy is positioned by X milliseconds or Y time slots as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values configured by a high layer, and the X and the Y are integers which are larger than or equal to 0.

6. The method according to claim 2, wherein if the state of the PUCCH scell is switched from the dormant state to the active state, determining the effective time of PUCCH cell switching according to predefined information or higher layer configuration information includes at least one of:

determining a time T1 after a time slot n in which DCI of PUCCH sSCell dormancy is located as an effective time of PUCCH cell switching, wherein the time T1 is a predefined time or a time determined based on high-level configuration; or (b)

Determining a time T2 after a time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is located as effective time of PUCCH cell switching, wherein the time T2 is a predefined time or a time determined based on high-level configuration; or (b)

Slot m and slot n+t3×2 ^u The latest time slot in (a) is determined as the effective time of the PUCCH cell switching, wherein the time slot m is the time slot in which the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCell dormancy is positioned, and n+T3×2 ^u Is a T3 time after time slot n where the DCI of PUCCH sSCelldormancy is indicated, the T3 time being a predefined time or a time determined based on a higher layer configuration, u being a subcarrier spacing configuration.

7. The method as recited in claim 1, further comprising:

before the effective time of the PUCCH cell switching, transmitting PUCCH on at least one of a primary cell PCell, a primary secondary cell PScell and a PUCCH SCell;

after the effective time of the PUCCH cell switching, determining a PUCCH transmission cell based on a PUCCH cell switching mode;

before the failure time of the PUCCH cell switching, determining a PUCCH transmission cell based on a PUCCH cell switching mode;

and after the failure time of the PUCCH cell switching, transmitting the PUCCH on at least one of the PCell, the PSCel and the PUCCH SCell.

8. A method for determining a time of a cell handover, performed by a network node, comprising:

And determining a target PUCCH transmission cell according to the effective time or the dead time, and receiving the PUCCH transmitted by the UE through the target PUCCH transmission cell.

9. The method of claim 8, wherein the determining the effective time or the dead time of the PUCCH cell switching according to the state switching of the PUCCH scell and the predefined information or the higher layer configuration information comprises at least one of:

10. The method according to claim 9, wherein if the state of the PUCCH scell is switched from the deactivated state to the activated state, determining the validation time of the PUCCH cell switching according to the predefined information or the higher layer configuration information comprises at least one of:

if the UE receives the activation signaling in the time slot n, the time slot is setIs determined as the effective time of the PUCCH cell switch, wherein T _HARQ The time from the reception of the physical downlink shared channel PDSCH corresponding to the activation signaling to the completion of the feedback of the corresponding hybrid automatic repeat request acknowledgement HARQ-ACK by the UE is T _{activation_time} For the activation time delay of the SCell of the auxiliary cell, T _{CSI_Reporting} For reporting time delay of Channel State Information (CSI), NRslotlength is the length of a new air interface time slot; or (b)

11. The method according to claim 9, wherein if the state of the PUCCH scell is switched from the active state to the deactivated state, determining the failure time of the PUCCH cell switching according to the predefined information or the higher layer configuration information comprises at least one of:

And determining the ending position of X milliseconds or Y time slots after the time slot n overtime by the deactivation timer of the secondary cell as the failure time of the PUCCH cell switching, wherein X and Y are respectively predefined values or values of high-level configuration, and the X and the Y are integers which are larger than or equal to 0.

12. The method of claim 9, wherein if the state of the PUCCH scell is switched from the active state to the dormant state, determining the failure time of the PUCCH cell switching according to the predefined information or the higher layer configuration information includes at least one of:

13. The method of claim 9, wherein determining the effective time of PUCCH cell switching according to predefined information or higher layer configuration information if the state of PUCCH scell is switched from the dormant state to the active state, comprises at least one of:

Determining a time T2 after a time slot m where the HARQ-ACK corresponding to the DCI of the indication PUCCH sSCelldormancy is located as effective time of PUCCH cell switching, wherein the time T2 is a predefined time or a time determined based on high-level configuration; or (b)

14. The method as recited in claim 8, further comprising:

before the effective time of the PUCCH cell switching, receiving PUCCH on at least one of a primary cell PCell, a primary secondary cell PScell and a PUCCH SCell;

and receiving the PUCCH on at least one of the PCell, the PSCel and the PUCCH SCell after the failure time of the PUCCH cell switching.

15. A time determining apparatus for cell handover, applied to a UE, comprising a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

16. The apparatus of claim 15, wherein the determining the effective time or the dead time of the PUCCH cell switching according to the state switching of the PUCCH scell and the predefined information or the higher layer configuration information comprises at least one of:

17. The apparatus of claim 16, wherein the determining the effective time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the deactivated state to the activated state comprises at least one of:

18. The apparatus of claim 16, wherein the determining the failure time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the active state to the deactivated state comprises at least one of:

19. The apparatus of claim 16, wherein the determining the failure time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the active state to the dormant state comprises at least one of:

20. The apparatus of claim 16, wherein the determining the effective time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the dormant state to the active state comprises at least one of:

21. The apparatus as recited in claim 15, further comprising:

22. A time determining device for cell handover, applied to a network node, comprising a memory, a transceiver, and a processor:

23. The apparatus of claim 22, wherein the determining the effective time or the dead time of the PUCCH cell switching according to the state switching of the PUCCH scell and the predefined information or the higher layer configuration information comprises at least one of:

24. The apparatus of claim 23, wherein the determining the effective time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the deactivated state to the activated state comprises at least one of:

25. The apparatus of claim 23, wherein the determining the failure time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the active state to the deactivated state comprises at least one of:

26. The apparatus of claim 23, wherein the determining the failure time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the active state to the dormant state comprises at least one of:

27. The apparatus of claim 23, wherein the determining the effective time of PUCCH cell switching according to the predefined information or the higher layer configuration information if the state of PUCCH scell is switched from the dormant state to the active state comprises at least one of:

28. The apparatus as recited in claim 22, further comprising:

29. A time determining apparatus for cell handover, applied to a UE, comprising:

30. A time determining apparatus for cell handover, applied to a network node, comprising:

and the fourth processing unit is used for determining a target PUCCH transmission cell according to the effective time or the ineffective time, and receiving the PUCCH sent by the UE through the target PUCCH transmission cell.

31. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 14.