WO2023066360A1 - 切换方法、装置、设备及可读存储介质 - Google Patents
切换方法、装置、设备及可读存储介质 Download PDFInfo
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- WO2023066360A1 WO2023066360A1 PCT/CN2022/126601 CN2022126601W WO2023066360A1 WO 2023066360 A1 WO2023066360 A1 WO 2023066360A1 CN 2022126601 W CN2022126601 W CN 2022126601W WO 2023066360 A1 WO2023066360 A1 WO 2023066360A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/04—Reselecting a cell layer in multi-layered cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
Definitions
- the embodiments of the present application relate to the field of communication technologies, and in particular to a handover method, device, equipment, and readable storage medium.
- MR-DC Multi-RAT Dual Connectivity
- NR-DC New Radio (NR) independent networking (Stand Alone, SA) to multi-radio access technology dual connectivity
- MR-DC multi-radio access technology dual connectivity
- NR multiple-radio access technology dual connectivity
- NE-DC fifth generation mobile communication technology
- 4G fourth generation
- NE-DC fifth generation mobile communication technology
- EN-DC 4G wireless access network and 5G NR dual connectivity
- NR-DC 5G NR and 5G NR dual connectivity
- conversion or conversion between MR-DC involving primary cell (Primary Cell, PCell) change including NE-DC to NE-DC, EN-DC to EN-DC, NR -DC to NR-DC
- PCell Primary Cell
- PSCell Primary Secondary Cell
- PCell handover and PSCell addition are performed separately.
- a radio resource control (Radio Resource Control, RRC) message triggers the terminal to perform PCell handover and PSCell addition.
- RRC Radio Resource Control
- the terminal behavior is undefined.
- the embodiment of the present application is to provide a handover method, device, equipment and readable storage medium, so as to solve the problem of how the terminal performs handover.
- a switching method comprising:
- the terminal performs switching, and the switching time of the terminal includes at least one of the following:
- the switching time of the terminal includes one or more of the following: the sum of the PCell switching time and the PSCell adding time; the sum of the PCell cell search time and the PSCell cell search time ; The sum of PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time;
- the first condition is: the terminal is configured with an SMTC with an unknown target PSCell.
- the method also includes:
- the terminal obtains the first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information instructs the terminal to add PSCell after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending the MSGA to the PCell;
- the method also includes:
- the terminal obtains second information, and the second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicates that the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time of the terminal;
- Eighth indication information indicates that the switching time of the terminal includes the PCell switching time of the terminal and/or the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the PCell cell search time of the terminal and the PSCell cell search time of the terminal;
- the tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, the time of PSCell cell search of the terminal, and the The sum of the PSCell synchronization time of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the Preamble to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the RAR is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell is equal to The sum of the time lengths for the terminal to add PSCells;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the MSGA to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the MSGB sent by the PCell The sum of the time lengths for adding PSCells with the terminal.
- the time length for the terminal to add a PSCell includes:
- the method also includes:
- the first threshold is related to channel quality
- the channel quality is lower than and/or equal to the first value of the first threshold, and the channel quality is higher than and/or equal to the second value of the first threshold, determine that the receiving PCell sends After MSG2, add PSCell;
- the method also includes:
- the terminal obtains a second threshold, and the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the method also includes:
- the terminal sends third information to the network side device
- the third information includes one or more of the following:
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time;
- Whether the terminal supports switching time includes the sum of the PCell cell search time and the PSCell cell search time;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PScell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- Twelfth indication information where the twelfth indication information indicates that the terminal supports parallel processing of the third operation
- the second operation includes one of the following:
- the method also includes:
- the fourth information includes one or more of the following:
- the fourteenth indication information indicates whether the terminal performs switching carrying PSCell addition through parallel processing
- the fifteenth indication information indicates whether the terminal carries out the switching of adding PSCell through serial processing
- the sixteenth instruction information indicates that the fifth operation is to be processed in parallel
- Seventeenth instruction information where the seventeenth instruction information indicates that the sixth operation performs serial processing.
- the third operation or the fourth operation or the fifth operation or the sixth operation includes one or more of the following:
- a switching method including:
- the network side device sends the first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information indicates that the terminal performs PSCell addition after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending the MSGA to the PCell;
- the method also includes:
- the network side device sends second information, where the second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicates that the switching time of the terminal includes the maximum value of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- Eighth indication information indicates that the switching time of the terminal includes the PCell switching time of the terminal and/or the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the PCell cell search time of the terminal and the PSCell cell search time of the terminal;
- the tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, the time of PSCell cell search of the terminal, and the The sum of the PSCell synchronization time of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the Preamble to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the RAR is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell is equal to The sum of the time lengths for the terminal to add PSCells;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the MSGA to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the MSGB sent by the PCell The sum of the time lengths for adding PSCells with the terminal.
- the time length for the terminal to add a PSCell includes:
- the method also includes:
- the network side device sends a second threshold, and the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the method also includes:
- the network side device receives third information
- the third information includes one or more of the following:
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time;
- Whether the terminal supports switching time includes the sum of the time of PCell cell search and the time of PSCell cell search;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PSCell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- Twelfth indication information where the twelfth indication information indicates that the terminal supports parallel processing of the third operation
- the second operation includes one of the following:
- the method also includes:
- the network side device sends fourth information
- the fourth information includes one or more of the following:
- the fourteenth indication information indicates whether the terminal performs PSCell addition through parallel processing
- the fifteenth indication information indicates whether the terminal adds PSCell through serial processing
- the sixteenth instruction information indicates that the fifth operation is to be processed in parallel
- Seventeenth instruction information where the seventeenth instruction information indicates that the sixth operation performs serial processing.
- a switching device which is applied to a terminal, including:
- the switching module is used for switching, and the switching time of the terminal includes at least one of the following:
- PCell cell search time The sum of PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time.
- a switching device which is applied to network side equipment, including:
- a second sending module configured to send the first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information instructs the terminal to add PSCell after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending the MSGA to the PCell;
- a communication device including: a processor, a memory, and a program stored on the memory and operable on the processor, and when the program is executed by the processor, the first aspect is implemented. Or the steps of the method described in the second aspect.
- a readable storage medium is provided, and a program is stored on the readable storage medium, and when the program is executed by a processor, the steps including the method described in the first aspect or the second aspect are realized.
- the terminal can determine the time to add the PSCell or determine at which stage to add the PSCell to assist network scheduling, clarify the behavior of the terminal during the handover process with the added PSCell, and improve system performance.
- FIG. 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application
- FIG. 2 is one of the flowcharts of a handover method provided in an embodiment of the present application
- FIG. 3 is the second flowchart of a handover method provided by an embodiment of the present application.
- Fig. 4 is one of the schematic diagrams of a switching device provided by an embodiment of the present application.
- Fig. 5 is the second schematic diagram of a switching device provided by the embodiment of the present application.
- FIG. 6 is a schematic diagram of a terminal provided in an embodiment of the present application.
- FIG. 7 is a schematic diagram of a network-side device provided by an embodiment of the present application.
- Fig. 8 is a schematic diagram of a communication device provided by an embodiment of the present application.
- words such as “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design scheme described as “exemplary” or “for example” in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as “exemplary” or “such as” is intended to present related concepts in a concrete manner.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced
- LTE-A Long Term Evolution-Advanced
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- system and “network” in the embodiments of the present application are often used interchangeably, and the described technologies can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies.
- NR New Radio
- 6G 6th Generation
- the wireless communication system includes a terminal 11 , a terminal 12 and a network side device 13 .
- the terminal can also be called terminal equipment or user equipment (User Equipment, UE), and the terminal can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant ( Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtual reality) reality, VR) equipment, robot, wearable device (Wearable Device), vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication function.
- Specific types of the terminal 11 and the terminal 12 are not limited.
- the network side device 13 may be a base station or a core network, where a base station may be called a Node B, an evolved Node B, an access point, a Base Transceiver Station (Base TransceiverStation, BTS), a radio base station, a radio transceiver, a basic service set (BasicServiceSet, BSS), Extended Service Set (ExtendedServiceSet, ESS), B Node, Evolved Node B (gNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node, Transmitting Receiving Point (Transmitting Receiving Point, TRP), wireless access network node, or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to the specified technical vocabulary. It should be noted that, in this embodiment of the application, only The base station in the NR system is taken as an example, but the specific type of the base station is not limited.
- Handover in this article includes handover with PSCell, and can also be described as handover with PSCell addition, or as handover with PSCell (HO with PSCell), or handover with PSCell (HO with PSCell addition) .
- the PCell herein may also be described as a primary cell, or a primary node.
- the PSCell herein may also be described as a primary and secondary cell, or a secondary node.
- the application scenarios of this application include at least one of the following:
- the handover time in this paper can also be described as handover delay (HO delay), or it can also be described as interruption time, including the interruption time caused by handover.
- the handover time includes the time from when the terminal receives a radio resource control (Radio Resource Control, RRC) message carrying handover to when the terminal sends a new PRACH.
- RRC Radio Resource Control
- sending the new PRACH includes sending the PRACH to the new PCell and/or sending the PRACH to the new PSCell.
- the terminal handover time can be understood as the terminal is ready to send a new PRACH within this period of time.
- an embodiment of the present application provides a handover method
- the execution subject of the method may be a terminal
- specific steps include: Step 201 .
- Step 201 The terminal performs switching, and the switching time of the terminal includes at least one of the following:
- the switching time of the terminal includes: "PCell switching time + PSCell adding time".
- the terminal completes PCell switching and PSCell adding in series, including the following scenarios:
- PCell switching and PSCell addition are completely serial, that is, after PCell switching is completed (specifically, after sending PRACH to PCell, that is, after receiving MSG4 or MSB), then add PSCell;
- Scenario 2 The PRACH process of the PCell overlaps with the PScell addition in the time domain, including sending the PRACH Preamble (or described as MSG1) to the PCell, and then starting the PScell addition; or receiving the RAR (MSG2) sent by the PCell, and starting the PScell addition; or After MSGA is sent to PCell, PScell addition starts.
- PRACH Preamble or described as MSG1
- RAR MSG2
- the switching time of the above-mentioned terminal includes "the maximum value of PCell switching time and PSCell adding time". Including the largest delay among the two, it can also be understood that the PRACH is sent to the PCell, and the PRACH is sent to the PSCell, and the time when the PRACH is sent latest among the two is used as a sign that the handover of the PSCell is completed.
- the switching time of the above-mentioned terminal includes "PCell switching time and/or PSCell adding time".
- the terminal completes PCell switching and PSCell adding in parallel. These two operations are completely independent, and there is no need to specify the sign of the end of PSCell switching .
- the switching time of Handover with PSCell can be described as PCell switching time and PSCell adding time, that is, the time of PCell switching and PSCell adding respectively.
- the overall time of Handover with PSCell may not be reflected.
- the above terminal handover time includes "PCell cell selection time + PSCell cell selection time", in this case, the terminal completes PCell handover and PSCell addition in a partially serial or partially parallel manner.
- this solution means that the cell search of the PCell and the cell search of the PSCell are performed serially, and other processes, including time synchronization, frequency domain synchronization, and PRACH transmission, are performed in parallel, that is, they are performed independently.
- the above terminal switching time includes "PCell cell selection time + PCell synchronization time + PSCell cell selection time + PSCell synchronization time”.
- this solution refers to the cell search and synchronization of the PCell and the cell search of the PSCell.
- the synchronization is executed serially, and other processes, including sending the PRACH, are executed in parallel, that is, they are executed independently.
- the switching time of the terminal in each solution may also include RRC processing time.
- the switching time of the terminal includes one or more of the following: PCell switching time and PSCell addition time; PCell cell search time and PSCell cell search time The time of PCell cell search, the time of PCell synchronization, the time of PSCell cell search and the time of PSCell synchronization;
- the first condition is: the terminal is configured with an SMTC whose target is an unknown PSCell. That is, the target PSCell is unknown, and the SMTC of the target PSCell is configured.
- configuring the SMTC of the target PSCell can be understood as configuring the SMTC for the target PSCel, that is, the terminal is configured with the SMTC of the target PSCel.
- the terminal is configured with an SMTC with an unknown target PSCell including:
- the SMTC of the target unknown PSCell is configured in targetcellSMTC-SCG-r16, but not configured in reconfigurationWithSync; or, the SMTC of the target unknown PSCell is configured in RRCConnectionReconfiguration.
- the method also includes:
- the terminal acquires first information, where the first information includes one or more of the following:
- the first indication information instructs the terminal to perform PSCell addition after sending a Physical Random Access Channel (Physical Random Access Channel, PRACH) (such as the master node PRACH) preamble to the PCell ;
- PRACH Physical Random Access Channel
- the second indication information instructs the terminal to add a PSCell after receiving a Random Access Response (Random Access Response, RAR) sent by the primary cell PCell;
- RAR Random Access Response
- the third indication information instructs the terminal to perform PSCell addition after receiving the message 4 (MSG4) sent by the PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending a message A (MSGA) to the PCell;
- the fifth indication information instructs the terminal to add the PSCell after receiving the message B (MSGB) sent by the PCell.
- the method also includes:
- second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicating that the switching time of the terminal includes the maximum value of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the search time of the PCell cell of the terminal and the search time of the PSCell cell of the terminal;
- Tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, and the time of PSCell cell search of the terminal The sum of time synchronized with the PSCell of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length (T1) from the terminal receiving a radio resource control (Radio Resource Control, RRC) message carrying handover to the terminal The sum of the time length for the terminal to send the Preamble to the PCell and the time length for the terminal to add the PSCell;
- RRC Radio Resource Control
- the first time length (T2) is: from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the random access The sum of the time length of the response (Random Access Response, RAR) and the time length of the terminal adding the PSCell;
- the first time length (T3) is: from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell The sum of the time length and the time length for the terminal to add the PSCell;
- the first time length (T4) is: the time from when the terminal receives the RRC message carrying handover to when the terminal sends MSGA to the PCell The sum of the length and the time length for the terminal to add the PSCell;
- the first time length (T5) is: from the terminal receiving the RRC message carrying handover to the terminal receiving the MSGB sent by the PCell The sum of the time length and the time length for the terminal to add the PSCell.
- the time length for the terminal to add a PSCell includes:
- the method also includes:
- the terminal acquires a first threshold, where the first threshold is related to channel quality
- the terminal determines to add a PSCell after sending a message 1 (MSG1) to the PCell;
- the terminal determines to add a PSCell after receiving the message 2 (MSG2) sent by the PCell;
- the terminal determines to add a PSCell after receiving MSG4 sent by the PCell;
- the terminal determines that After receiving MSG2 sent by PCell, add PSCell;
- the terminal When the channel quality is lower than and/or equal to the second value of the first threshold, and the channel quality is higher than and/or equal to the third value of the first threshold, the terminal receives After MSG4 sent by PCell, add PSCell;
- the terminal determines to add a PSCell after sending the MSGA to the PCell;
- the terminal determines to perform PSCell addition after receiving the MSGB sent by the PCell.
- the terminal determines that the receiving PCell After sending MSGB, proceed to PSCell addition.
- the first threshold includes: Reference Signal Received Power (Reference Signal Receiving Power, RSRP), Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ), Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR ) at least one of the
- the channel quality includes: at least one of RSRP, RSRQ, and SINR, and the channel quality is obtained by terminal measurement.
- the method also includes:
- the terminal acquires a second threshold, where the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the second threshold includes: at least one of RSRP, RSRQ, and SINR.
- the channel quality includes: at least one of RSRP, RSRQ, and SINR, and the channel quality is obtained by terminal measurement.
- the method also includes:
- the terminal sends the third information to the network side;
- the third information includes one or more of the following:
- performing handover with PSCell addition in parallel processing means that the terminal performs PCell handover and PSCell addition at the same time.
- the duration for completing the handover with the added PSCell is: the maximum value of the PCell handover delay and the PSCell add delay (max(PCell handover delay, PSCell add delay)).
- the serial processing method of handover with PSCell addition means that the terminal performs PCell handover and PSCell addition in series, and then adds PSCell after PCell handover or most of the process of PCell handover is completed.
- the time to complete the handover with PSCell added is longer than the time in parallel mode, specifically PCell handover delay + PSCell added delay + T (here T is related to which link the terminal performs PSCell addition in PCell PRACH).
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time
- Whether the terminal supports switching time includes the sum of the time of PCell cell search and the time of PSCell cell search;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PScell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- the network side may send the first information to the terminal according to the third information, that is, the network side may instruct the terminal when to add a PSCell according to the capabilities reported by the terminal or the actual needs of the terminal.
- the second operation includes one of the following:
- the method also includes:
- the terminal determines a first manner, where the first manner represents a manner in which the terminal performs handover with addition of the PSCell.
- the step of the terminal determining the first manner includes:
- the terminal receives fourth information from the network side;
- the terminal determines the first method according to the fourth information (that is, obtains how to carry out switching with PSCell addition based on the network instruction);
- the terminal determines the first manner according to the agreement (that is, the terminal acquires how to perform the handover with the addition of the PSCell through the agreement).
- the fourth information includes one or more of the following:
- the link in which the terminal performs parallel processing is further indicated through the sixteenth indication information.
- the link in which the terminal performs serial processing is further indicated through the seventeenth indication information.
- the protocol agreement includes predefined rules, and the predefined rules include:
- the serial processing method is adopted; otherwise (that is, the above conditions are not satisfied), the parallel processing method is adopted.
- SMTC synchronization signal block-based measurement time configuration
- the third operation or the fourth operation or the fifth operation or the sixth operation includes one or more of the following:
- parallel processing or serial processing can be performed synchronously in the time domain.
- parallel processing or serial processing can be performed synchronously in the frequency domain.
- the cell search includes at least one of AGC and cell detection.
- Cell detection can also be described as PSS/SSS detection, that is, Primary Synchronization Signal/Secondary Synchronization Signal detection.
- the terminal receives the first information sent by the network, where the first information indicates when the terminal adds the PSCell.
- the first information may include: first indication information, the first indication information indicates that the terminal performs PSCell addition after sending the PRACH preamble to the PCell (that is, after sending the message 1 (MSG1) to the PCell) .
- the time length for the terminal to complete the handover with PSCell addition (HO with PSCell) is T1.
- T1 the time from receiving the RRC message carrying handover (HO with PSCell) to the terminal sending the Preamble to the PCell + the time length for the terminal to add PSCell.
- the length of time for the terminal to add a PSCell can be understood as the time from when the terminal sends a Preamble to the PCell to when the terminal sends a Preamble to the PSCell, or from when the terminal sends a Preamble to the PCell to when the terminal sends a message A (MSGA) to the PSCell.
- MSGA message A
- the first information may include second indication information, and the second indication information instructs the terminal to initiate PSCell addition after receiving the RAR (Receive Message 2 (MSG2)) sent by the PCell.
- RAR Receiveive Message 2
- the time length for the terminal to complete the handover (HO with PSCell) added with PScell is T2.
- T2 the time from receiving the RRC message carrying handover (HO with PSCell) to the terminal receiving the RAR sent by the PCell + the time length for the terminal to add PSCell.
- the time length for the terminal to add the PSCell can be understood as: the time from the terminal receiving the RAR sent by the PCell to the terminal sending the Pramble to the PSCell, or the time from the terminal receiving the RAR sent by the PCell to the terminal sending the MSGA to the PSCell.
- the time of T2 is longer, and the increased time of T2 is the time for the terminal to receive the RAR sent by the PCell.
- PScell addition is carried out at this stage.
- the robustness can be improved to a certain extent, but there is still the risk of PCell handover failure, which may bring Come to a certain waste of resources.
- the first information may include third indication information, and the third indication information instructs the terminal to add the PSCell after receiving the message 4 (MSG4) sent by the PCell.
- MSG4 message 4
- the time length for the terminal to complete the handover with PSCell addition (HO with PSCell) is T3.
- T3 the time from receiving the RRC message carrying handover (HO with PSCell) to the terminal receiving the MSG4 sent by the PCell + the time length for the terminal to add PSCell.
- the time length for the terminal to add the PSCell can be understood as: the time from the terminal receiving the MSG4 sent by the PCell to the terminal sending the Pramble to the PSCell or the time from the terminal receiving the MSG4 sent by the PCell to the terminal sending the MSGA to the PSCell.
- the time of T3 is longer, wherein, compared with T1, the increased time of T3 is the time for the terminal to receive the RAR sent by the PCell, the time for the terminal to send MSG3, and the time for the terminal to receive MSG4.
- the terminal indicated by the third indication information initiates the addition of the PSCell, it can be determined that the switching of the MN PCell has been successfully completed, which can improve the robustness of the system.
- the first information may include fourth indication information, and the fourth indication information instructs the terminal to add the PSCell after sending the MSGA to the PCell.
- the time length for the terminal to complete the handover (HO with PSCell) added with PScell is T4.
- T4 the time from receiving the RRC message carrying handover (HO with PSCell) to the terminal sending MSGA to the PCell + the time length for the terminal to add PSCell.
- the time length for the terminal to add the PSCell can be understood as: the time from the terminal sending the MSGA to the PCell to the terminal sending the Pramble to the PSCell or the time from the terminal sending the MSGA to the PCell to the terminal sending the MSGA to the PSCell.
- the first information may include fifth indication information, and the fifth indication information indicates that the terminal performs PSCell addition after receiving the MSGB sent by the PCell.
- the time length for the terminal to complete the handover (HO with PSCell) added with PScell is T5.
- T5 the time from receiving the RRC message carrying handover (HO with PSCell) to the terminal receiving the MSGB sent by the PCell + the time length for the terminal to add PSCell.
- the time length for the terminal to add the PSCell can be understood as: the time from the terminal receiving the MSGB sent by the PCell to the terminal sending the Pramble to the PSCell, or the time from the terminal receiving the MSGB sent by the PCell to the terminal sending the MSGA to the PSCell.
- the time of T5 is longer, and compared with T4, the increased time of T5 is the time for the terminal to receive the MSGB sent by the PCell.
- PScell addition is carried out at this stage.
- the robustness can be improved to a certain extent, but there is still the risk of PCell handover failure, which may bring Come to a certain waste of resources.
- PRACH distinguishes four-step RACH and two-step RACH.
- the random access process includes MSG1, MSG2, MSG3, and MSG4.
- the terminal After the terminal receives the RRC message carrying the handover (HO with PSCell) added by the PSCell, it needs to determine whether to add the PSCell before or after the PRACH of the PCell handover is completed.
- the PSCell addition is carried out before the PRACH is completed, it is necessary to determine which link to carry out in MSG1, MSG2, MSG3, and MSG4. Because the earlier the PSCell addition is carried out, the delay for completing the handover carrying the PSCell addition is shorter, and the scheduling limit is also shorter, so that the dual connection mode can be quickly entered. However, the PSCell addition is carried out before the PRACH of PCell handover is completed, because the random access of PCell handover still has the possibility of failure, if the random access of PCell handover fails, then the PSCell addition started in advance will also cause a certain waste of resources.
- the same problem also exists in the two-step RACH, that is, it needs to determine whether to add PSCell before or after the PRACH of PCell handover is completed. If the PSCell is added before the completion of PRACH, it needs to be determined in which link of MSGA and MSGB.
- the network can instruct the terminal at which link to add PSCell. If the network expects to quickly enter the dual connection mode, the network can instruct the terminal to add PSCell as soon as possible. At this time, it needs to bear a certain risk of handover failure.
- the network can instruct the terminal to add PSCells at a later stage of the PRACH process of PCell switching.
- the terminal receives the first threshold issued by the network, the first threshold is related to channel quality, and the channel quality includes but not limited to: RSRP and/or RSRQ and/or SINR.
- the first threshold can have multiple values.
- the terminal can determine when to perform PSCell addition.
- the terminal may add a PSCell after sending MSG1 to the PCell;
- the terminal may add the PSCell after receiving the MSG2 sent by the PCell;
- the terminal may perform PSCell addition after receiving MSG4 sent by the PCell.
- the above three threshold values may also be used in any combination.
- the terminal may add a PSCell after sending MSG1 to the PCell;
- the terminal may perform PSCell addition after receiving MSG2 sent by PCell ;
- the terminal may perform PSCell addition after receiving MSG4 sent by PCell .
- the terminal may add the PSCell after sending the MSGA to the PCell;
- the terminal may perform PSCell addition after receiving the MSGB sent by the PCell.
- the terminal may add a PSCell after sending the MSGA to the PCell; when the channel quality is lower than and/or equal to the fourth value of the first threshold value, but when the channel quality is higher than and/or equal to the fifth value of the first threshold, the terminal may perform PSCell addition after receiving the MSGB sent by the PCell.
- the terminal can also report one or more of the following capability information to the network:
- the so-called handover with PSCell addition in parallel means that the terminal performs PCell handover and PSCell addition at the same time.
- the time length for completing the handover carrying the PSCell addition is max (PCell handover delay, PSCell addition delay).
- the so-called switching with PSCell addition in serial means that the terminal performs PCell switching and PSCell addition serially, and performs PSCell addition after completing PCell switching or after completing most processes of PCell switching.
- the time to complete the handover with PSCell addition is longer than the parallel mode, specifically PCell handover delay + PSCell addition delay + T (here T is related to which link the terminal performs PSCell addition in PCell PRACH) .
- the terminal can also report at which link the PSCell is added, including adding a PSCell after MSG1, adding a PSCell after MSG2; adding a PSCell after MSG3, adding a PSCell after MSGA, and adding a PSCell after MSG3. After MSGB, add PSCell.
- the terminal can also report which parts of the parallel processing are supported, including whether the cell detection can be processed in parallel (that is, whether the PCell cell detection and the PSCell cell detection can be carried out at the same time);
- time domain/frequency domain synchronization can be processed in parallel (that is, whether the time domain/frequency domain synchronization of the PCell cell and the time domain/frequency domain synchronization of the PSCell cell can be carried out at the same time);
- serial processing there are also partial serial methods, and the terminal can also report which parts of serial processing are supported, including: whether serial processing is required for cell detection (that is, whether PCell cell detection and PSCell cell detection can be performed serially);
- time domain/frequency domain synchronization needs serial processing (that is, whether the time domain/frequency domain synchronization of the PCell cell and the time domain/frequency domain synchronization of the PSCell cell can be carried out serially);
- the terminal may acquire how to perform switching of carrying PScell addition.
- the way for the terminal to obtain includes: obtaining network indication information (fourth information), or protocol predefined rules.
- the above fourth information includes indicating whether the terminal performs switching of carrying PSCell addition in a parallel manner, and/or indicates whether the terminal performs switching of carrying PSCell addition in a serial manner.
- the parallel mode it may further indicate which link the terminal performs parallel processing, including one or more of the following:
- serial mode it may further indicate at which link the terminal performs serial processing, including one or more of the following:
- the predefined rules of the protocol include: if the network configures SSB-based RRM Measurement Timing Configuration (SMTC) for the target PSCell (which can be configured through targetcellSMTC-SCG), then use the serial method; if the above conditions If not satisfied, use parallel mode.
- SMTC Measurement Timing Configuration
- PCell handover and PSCell addition are performed separately.
- an RRC message triggers the terminal to perform PCell handover and PSCell addition. Since there is no regulation on how to perform PCell handover and PSCell addition in the process, during the handover process carrying PSCell addition, The behavior of the terminal is uncertain, and the time required to complete the handover carrying the PSCell addition is uncertain, and the time length will affect network scheduling.
- the terminal can determine the time to add the PSCell or determine at which stage to add the PSCell to assist network scheduling, clarify the behavior of the terminal during the handover process with the added PSCell, and improve system performance.
- the embodiment of the present application adopts a switching method, and the specific steps include: step 301 .
- Step 301 the network side device sends the first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information instructs the terminal to add PSCell after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending the MSGA to the PCell;
- the method also includes:
- the network side device sends second information, where the second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicates that the switching time of the terminal includes the maximum value of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- Eighth indication information indicates that the switching time of the terminal includes the PCell switching time of the terminal and/or the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the PCell cell search time of the terminal and the PSCell cell search time of the terminal;
- the tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, the time of PSCell cell search of the terminal, and the The sum of the PSCell synchronization time of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the Preamble to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the RAR is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell is equal to The sum of the time lengths for the terminal to add PSCells;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the MSGA to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the MSGB sent by the PCell The sum of the time lengths for adding PSCells with the terminal.
- the time length for the terminal to add a PSCell includes:
- the method also includes:
- the network side device sends a second threshold, where the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the method also includes:
- the network side device receives the third information
- the third information includes one or more of the following:
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time;
- Whether the terminal supports switching time includes the sum of the PCell cell search time and the PSCell cell search time;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PScell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- Twelfth indication information where the twelfth indication information indicates that the terminal supports parallel processing of the third operation
- the second operation includes one of the following:
- the method also includes:
- the network side device sends the fourth information
- the fourth information includes one or more of the following:
- the fourteenth indication information indicates whether the terminal performs PSCell addition through parallel processing
- the fifteenth indication information indicates whether the terminal adds PSCell through serial processing
- the sixteenth instruction information indicates that the fifth operation is to be processed in parallel
- Seventeenth instruction information where the seventeenth instruction information indicates that the sixth operation performs serial processing.
- the network side can indicate the time when the terminal adds the PSCell or at which stage to add the PSCell, so as to clarify the behavior of the terminal during the handover process with the added PSCell, and improve system performance.
- an embodiment of the present application provides a switching device, which is applied to a terminal, and the device 400 includes:
- the switching module 401 is configured to perform switching, and the switching time of the terminal includes at least one of the following:
- PCell cell search time The sum of PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time.
- the switching time of the terminal includes one or more of the following: PCell switching time and PSCell addition time; PCell cell search time and PSCell cell search time The time of PCell cell search, the time of PCell synchronization, the time of PSCell cell search and the time of PSCell synchronization;
- the first condition is: the terminal is configured with an SMTC whose target is an unknown PSCell.
- the device also includes:
- a first acquiring module configured to acquire first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information instructs the terminal to add PSCell after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add the PSCell after sending the message A MSGA to the PCell;
- the device also includes:
- the second obtaining module is used to obtain second information, and the second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicates that the switching time of the terminal includes the maximum value of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- Eighth indication information indicates that the switching time of the terminal includes the PCell switching time of the terminal and/or the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the PCell cell search time of the terminal and the PSCell cell search time of the terminal;
- the tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, the time of PSCell cell search of the terminal, and the The sum of the PSCell synchronization time of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the Preamble to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the RAR is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell is equal to The sum of the time lengths for the terminal to add PSCells;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the MSGA to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the MSGB sent by the PCell The sum of the time lengths for adding PSCells with the terminal.
- the time length for the terminal to add a PSCell includes:
- the device also includes:
- a third obtaining module configured to obtain a first threshold, wherein the first threshold is related to channel quality
- the channel quality is lower than and/or equal to the first value of the first threshold, and the channel quality is higher than and/or equal to the second value of the first threshold, determine that the receiving PCell sends After MSG2, add PSCell;
- the device also includes:
- a fourth obtaining module configured to obtain a second threshold, where the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the device also includes:
- a first sending module configured to send third information to the network side device
- the third information includes one or more of the following:
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time;
- Whether the terminal supports switching time includes the sum of the PCell cell search time and the PSCell cell search time;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PScell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- Twelfth indication information where the twelfth indication information indicates that the terminal supports parallel processing of the third operation
- the second operation includes one of the following:
- the device also includes:
- the second determining module is configured to determine a first manner, where the first manner represents a manner in which the terminal performs handover with PSCell addition.
- the second determination module is further configured to receive fourth information from the network side device; determine the first method according to the fourth information; or determine the first method according to the agreement. one way.
- the fourth information includes one or more of the following:
- the fourteenth indication information indicates whether the terminal performs switching carrying PSCell addition through parallel processing
- sixteenth instruction information indicates that the fifth operation is to be processed in parallel
- Seventeenth instruction information where the seventeenth instruction information indicates that the sixth operation performs serial processing.
- the protocol agreement includes predefined rules, and the predefined rules include:
- the serial processing method is adopted; otherwise, the parallel processing method is adopted.
- the third operation or the fourth operation or the fifth operation or the sixth operation includes one or more of the following:
- the device provided by the embodiment of the present application can realize each process realized by the method embodiment shown in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not repeated here.
- the embodiment of the present application provides a switching device, which is applied to network side equipment, and the device 500 includes:
- a second sending module 501 configured to send the first information
- the first information includes one or more of the following:
- the first indication information instructs the terminal to add the PSCell after sending the PRACH preamble to the PCell;
- the second indication information instructs the terminal to add PSCell after receiving the RAR sent by the PCell;
- the third indication information instructs the terminal to add PSCell after receiving MSG4 sent by PCell;
- the fourth indication information instructs the terminal to add a PSCell after sending the MSGA to the PCell;
- the device also includes:
- a third sending module configured to send second information, where the second information includes one or more of the following:
- sixth indication information indicates that the switching time of the terminal includes the sum of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- the seventh indication information indicates that the switching time of the terminal includes the maximum value of the PCell switching time of the terminal and the PSCell adding time of the terminal;
- Eighth indication information indicates that the switching time of the terminal includes the PCell switching time of the terminal and/or the PSCell adding time of the terminal;
- Ninth indication information indicates that the switching time of the terminal includes the sum of the PCell cell search time of the terminal and the PSCell cell search time of the terminal;
- the tenth indication information indicates that the switching time of the terminal includes the time of PCell cell search of the terminal, the time of PCell synchronization of the terminal, the time of PSCell cell search of the terminal, and the The sum of the PSCell synchronization time of the terminal.
- the length of the switching time of the terminal is a first time length
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the Preamble to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the PCell and sends the RAR is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives MSG4 sent by the PCell is equal to The sum of the time lengths for the terminal to add PSCells;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal sends the MSGA to the PCell is equal to the time length The sum of the time lengths for the terminal to add the PSCell;
- the first time length is: the time length from when the terminal receives the RRC message carrying handover to when the terminal receives the MSGB sent by the PCell The sum of the time lengths for adding PSCells with the terminal.
- the time length for the terminal to add a PSCell includes:
- the device also includes:
- a fourth sending module configured to send a second threshold, where the second threshold is related to channel quality
- the switching time of the terminal includes: the sum of PCell switching time and PSCell adding time;
- the switching time of the terminal includes the maximum value of the PCell switching time and the PSCell adding time
- the switching time of the terminal includes PCell switching time and/or PSCell adding time
- the switching time of the terminal includes the sum of the PCell cell search time and the PScell cell search time
- the switching time of the terminal includes PCell cell search time, PCell synchronization time, PSCell cell search time and PSCell synchronization time sum of time.
- the device also includes:
- a first receiving module configured to receive third information
- the third information includes one or more of the following:
- Whether the terminal supports switching time includes the sum of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes the maximum value of PCell switching time and PSCell adding time
- Whether the terminal supports switching time includes PCell switching time and/or PSCell adding time;
- Whether the terminal supports switching time includes the sum of the PCell cell search time and the PSCell cell search time;
- Whether the terminal supports switching time includes the time of PCell cell search, the time of PCell synchronization, the sum of the time of PSCell cell search and the time of PScell synchronization;
- the eleventh indication information indicates that the PSCell is added after the second operation
- Twelfth indication information where the twelfth indication information indicates that the terminal supports parallel processing of the third operation
- the second operation includes one of the following:
- the device also includes:
- a fifth sending module configured to send fourth information
- the fourth information includes one or more of the following:
- the fourteenth indication information indicates whether the terminal performs PSCell addition through parallel processing
- the fifteenth indication information indicates whether the terminal adds PSCell through serial processing
- the sixteenth instruction information indicates that the fifth operation is to be processed in parallel
- Seventeenth instruction information where the seventeenth instruction information indicates that the sixth operation performs serial processing.
- the device provided by the embodiment of the present application can implement the various processes implemented by the method embodiment shown in FIG. 3 and achieve the same technical effect. To avoid repetition, details are not repeated here.
- FIG. 6 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
- the terminal 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, and a display unit. 606 , at least some components in the user input unit 607 , the interface unit 608 , the memory 609 , and the processor 610 .
- the terminal 600 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 610 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
- a power supply such as a battery
- the terminal structure shown in FIG. 6 does not constitute a limitation on the terminal.
- the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
- the input unit 604 may include a graphics processor (Graphics Processing Unit, GPU) 6041 and a microphone 6042, and the graphics processor 6041 is used for the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
- the display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
- the user input unit 607 includes a touch panel 6071 and other input devices 6072 .
- the touch panel 6071 is also called a touch screen.
- the touch panel 6071 may include two parts, a touch detection device and a touch controller.
- Other input devices 6072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.
- the radio frequency unit 601 receives the downlink data from the network side device, and processes it to the processor 610; in addition, sends the uplink data to the network side device.
- the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
- the memory 609 can be used to store software programs or instructions as well as various data.
- the memory 609 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like.
- the memory 609 can include a high-speed random access memory, and can also include a non-transitory memory, wherein the non-transitory memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM) ), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM) or flash memory.
- ROM read-only memory
- PROM programmable read-only memory
- Erasable PROM Erasable Programmable Read-Only Memory
- EPROM Electrically Erasable Programmable Read-Only Memory
- EEPROM Electrically Erasable Programmable Read-Only Memory
- flash memory for example at least one disk storage device, flash memory device, or other non-transitory solid state storage device.
- the processor 610 may include one or more processing units; optionally, the processor 610 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 610 .
- the terminal provided by the embodiment of the present application can realize each process realized by the method embodiment shown in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not repeated here.
- the embodiment of the present application also provides a network side device.
- the network side device 700 includes: an antenna 701 , a radio frequency device 702 , and a baseband device 703 .
- the antenna 701 is connected to the radio frequency device 702 .
- the radio frequency device 702 receives information through the antenna 701, and sends the received information to the baseband device 703 for processing.
- the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702
- the radio frequency device 702 processes the received information and sends it out through the antenna 701 .
- the foregoing frequency band processing device may be located in the baseband device 703 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 703 , and the baseband device 703 includes a processor 704 and a memory 705 .
- the baseband device 703, for example, may include at least one baseband board, and the baseband board is provided with a plurality of chips, as shown in FIG.
- the baseband device 703 may also include a network interface 706 for exchanging information with the radio frequency device 702, such as a common public radio interface (CPRI for short).
- a network interface 706 for exchanging information with the radio frequency device 702, such as a common public radio interface (CPRI for short).
- CPRI common public radio interface
- the network side device in this embodiment of the present application further includes: instructions or programs stored in the memory 705 and executable on the processor 704 .
- processor 704 invokes instructions or programs in the memory 705 to execute the methods executed by the modules shown in FIG. 5 and achieve the same technical effect. To avoid repetition, details are not repeated here.
- the embodiment of the present application also provides a communication device 800, including a processor 801, a memory 802, and a program or instruction stored in the memory 802 and operable on the processor 801.
- the program or instruction When executed by the processor 801, each process of the above-mentioned method embodiment in FIG. 2 or FIG. 3 is realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
- the embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the processor, each process of the method embodiment shown in FIG. 2 or FIG. 3 above is implemented. , and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
- the processor is the processor in the terminal described in the foregoing embodiments.
- the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
- the steps of the methods or algorithms described in connection with the disclosure of this application can be implemented in the form of hardware, or can be implemented in the form of executing software instructions on a processor.
- the software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable hard disk, CD-ROM or any other storage medium known in the art.
- An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
- the storage medium may also be a component of the processor.
- the processor and storage medium can be carried in an ASIC.
- the ASIC can be carried in the core network interface device.
- the processor and the storage medium may also exist in the core network interface device as discrete components.
- Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
- a storage media may be any available media that can be accessed by a general purpose or special purpose computer.
- embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the embodiment of 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, embodiments of 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 disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- Embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
- the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
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Abstract
Description
Claims (24)
- 一种切换方法,所述方法包括:终端进行切换,所述终端的切换时间包括以下至少一项:主小区PCell切换时间与主辅小区PSCell添加时间之和;PCell切换时间和PSCell添加时间二者中的最大值;PCell切换时间和/或PSCell添加时间;PCell小区搜索的时间与PSCell小区搜索的时间之和;PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 根据权利要求1所述的方法,其中,在满足第一条件的情况下,所述终端的切换时间包括以下一项或多项:PCell切换时间与PSCell添加时间之和;PCell小区搜索的时间和PSCell小区搜索的时间之和;PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和;其中,所述第一条件为:所述终端被配置了目标未知PSCell的基于同步信号块的测量时间配置SMTC。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端获取第一信息,其中,所述第一信息包括以下一项或多项:第一指示信息,所述第一指示信息指示所述终端在向PCell发送物理随机接入信道PRACH前导码preamble之后进行PSCell添加;第二指示信息,所述第二指示信息指示所述终端在接收到PCell发送的随机接入响应RAR之后进行PSCell添加;第三指示信息,所述第三指示信息指示所述终端在接收到PCell发送的消息4 MSG4之后进行PSCell添加;第四指示信息,所述第四指示信息指示所述终端在向PCell发送消息AMSGA之后进行PSCell添加;第五指示信息,所述第五指示信息指示所述终端在接收到PCell发送的消息B MSGB之后进行PSCell添加。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端获取第二信息,所述第二信息包括以下一项或多项:第六指示信息,所述第六指示信息指示所述终端的切换时间包括PCell切换时间与PSCell添加时间之和;第七指示信息,所述第七指示信息指示所述终端的切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;第八指示信息,所述第八指示信息指示所述终端的切换时间包括PCell切换时间和/或PSCell添加时间;第九指示信息,所述第九指示信息指示所述终端的切换时间包括PCell小区搜索的时间与PSCell小区搜索的时间之和;第十指示信息,所述第十指示信息指示所述终端的切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 根据权利要求3所述的方法,其中,所述终端的切换时间的长度为第一时间长度;在所述第一信息中包括所述第一指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的无线资源控制RRC消息到所述终端向PCell发送Preamble的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第二指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收PCell发送RAR的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第三指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收PCell发送的MSG4的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第四指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端向PCell发送MSGA的时 间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第五指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收到PCell发送的MSGB的时间长度与所述终端进行PSCell添加的时间长度之和。
- 根据权利要求5所述的方法,其中,所述终端进行PSCell添加的时间长度,包括:从所述终端接收到PCell发送的MSGB到所述终端向PSCell发送Preamble的时间长度;或者,从所述终端接收到PCell发送的MSGB到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的RAR到所述终端向PSCell发送Preamble的时间长度;或者,从所述终端接收到PCell发送的RAR到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的MSG4到所述终端向PSCell发送Preamble的时间长度;或者,从所述终端接收到PCell发送的MSG4到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的MSGA到所述终端向PSCell发送Preamble的时间长度;或者,从所述终端接收到PCell发送的MSGA到所述终端向PSCell发送MSGA 的时间长度。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端获取第一门限,其中所述第一门限与信道质量相关;当所述信道质量高于和/或等于所述第一门限的第一取值时,确定在向PCell发送消息1 MSG1之后,进行PSCell添加;或者,当所述信道质量高于和/或等于所述第一门限的第二取值时,确定在接收PCell发送的消息2 MSG2之后,进行PSCell添加;或者,当所述信道质量高于和/或等于所述第一门限的第三取值时,确定在接收PCell发送的MSG4之后,进行PSCell添加;或者,当所述信道质量低于和/或等于所述第一门限的第一取值,且所述信道质量高于和/或等于所述第一门限的第二取值时,确定在接收PCell发送的MSG2之后,进行PSCell添加;或者,当所述信道质量低于和/或等于所述第一门限的第二取值,且所述信道质量高于和/或等于所述第一门限的第三取值时,在接收PCell发送的MSG4之后,进行PSCell添加;或者,当所述信道质量高于和/或等于所述第一门限的第四取值时,确定在向PCell发送MSGA之后,进行PSCell添加;或者,当所述信道质量高于和/或等于所述第一门限的第五取值时,确定在接收PCell发送的MSGB之后,进行PSCell添加;或者,当所述信道质量低于和/或等于第一门限的第四取值,且所述信道质量高于和/或等于所述第一门限的第五取值时,确定在接收PCell发送的MSGB之后,进行PSCell添加。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端获取第二门限,所述第二门限与信道质量有关;当所述信道质量高于和/或等于所述第二门限的第一取值时,所述终端的切换时间包括:PCell切换时间与PSCell添加时间之和;当所述信道质量高于和/或等于所述第二门限的第二取值时,所述终端的切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;当所述信道质量高于和/或等于所述第二门限的第三取值时,所述终端的切换时间包括PCell切换时间和/或PSCell添加时间;当所述信道质量高于和/或等于所述第二门限的第四取值时,所述终端的切换时间包括PCell小区搜索的时间与PScell小区搜索的时间之和;当所述信道质量高于和/或等于所述第二门限的第五取值时,所述终端的切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端向网络侧设备发送第三信息;其中,所述第三信息包括以下一项或多项:所述终端是否支持基于并行处理的方式进行PCell切换和PSCell添加;所述终端是否支持基于串行处理的方式进行PCell切换和PSCell添加;所述终端是否支持切换时间包括PCell切换时间与PSCell添加时间之和;所述终端是否支持切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;所述终端是否支持切换时间包括PCell切换时间和/或PSCell添加时间;所述终端是否支持切换时间包括PCell小区搜索的时间与PSCell小区搜索的时间之和;所述终端是否支持切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间与PScell同步的时间之和;第十一指示信息,所述第十一指示信息指示在第二操作之后进行PSCell添加;第十二指示信息,所述第十二指示信息指示所述终端支持第三操作的并行 处理;第十三指示信息,所述第十三指示信息指示所述终端支持第四操作的串行处理。
- 根据权利要求9所述的方法,其中,所述第二操作包括以下之一:向PCell发送MSG1;接收到PCell发送的MSG2;向PCell发送消息3MSG3;接收到PCell发送的MSG4;向PSCell发送MSGA;接收到PCell发送的MSGB。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述终端从网络侧设备接收第四信息;所述第四信息包括以下一项或多项:第十四指示信息,所述第十四指示信息指示所述终端是否通过并行处理的方式进行携带PSCell添加的切换;第十五指示信息,所述第十五指示信息指示所述终端是否通过串行处理的方式进行携带PSCell添加的切换;第十六指示信息,所述第十六指示信息表示第五操作进行并行处理;第十七指示信息,所述第十七指示信息表示第六操作进行串行处理。
- 根据权利要求9或11所述的方法,其中,所述第三操作或第四操作或第五操作或第六操作,包括以下一项或多项:小区检测;时域同步;频域同步;自动增益控制;随机接入。
- 一种切换方法,包括:网络侧设备发送第一信息;其中,所述第一信息包括以下一项或多项:第一指示信息,所述第一指示信息指示终端在向PCell发送PRACHpreamble之后进行PSCell添加;第二指示信息,所述第二指示信息指示所述终端在接收到PCell发送的RAR之后进行PSCell添加;第三指示信息,所述第三指示信息指示所述终端在接收到PCell发送的MSG4之后进行PSCell添加;第四指示信息,所述第四指示信息指示所述终端在向PCell发送MSGA之后进行PSCell添加;第五指示信息,所述第五指示信息指示所述终端在接收到PCell发送的MSGB之后进行PSCell添加。
- 根据权利要求13所述的方法,其中,所述方法还包括:所述网络侧设备发送第二信息,所述第二信息包括以下一项或多项:第六指示信息,所述第六指示信息指示所述终端的切换时间包括PCell切换时间与PSCell添加时间之和;第七指示信息,所述第七指示信息指示所述终端的切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;第八指示信息,所述第八指示信息指示所述终端的切换时间包括PCell切换时间和/或PSCell添加时间;第九指示信息,所述第九指示信息指示所述终端的切换时间包括PCell小区搜索的时间与PSCell小区搜索的时间之和;第十指示信息,所述第十指示信息指示所述终端的切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 根据权利要求13所述的方法,其中,所述终端的切换时间的长度为第一时间长度;在所述第一信息中包括所述第一指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端向PCell发送Preamble的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第二指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收PCell发送RAR的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第三指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收PCell发送的MSG4的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第四指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端向PCell发送MSGA的时间长度与所述终端进行PSCell添加的时间长度之和;或者,在所述第一信息中包括所述第五指示信息的情况下,所述第一时间长度为:从所述终端接收到携带切换的RRC消息到所述终端接收到PCell发送的MSGB的时间长度与所述终端进行PSCell添加的时间长度之和。
- 根据权利要求15所述的方法,其中,所述终端进行PSCell添加的时间长度,包括:从所述终端接收到PCell发送的MSGB到所述终端向PSCell发送Pramble的时间长度;或者,从所述终端接收到PCell发送的MSGB到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的RAR到所述终端向PSCell发送Pramble的时间长度;或者,从所述终端接收到PCell发送的RAR到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的MSG4到所述终端向PSCell发送Pramble的时间长度;或者,从所述终端接收到PCell发送的MSG4到所述终端向PSCell发送MSGA的时间长度;或者,从所述终端接收到PCell发送的MSGA到所述终端向PSCell发送Pramble的时间长度;或者,从所述终端接收到PCell发送的MSGA到所述终端向PSCell发送MSGA的时间长度。
- 根据权利要求13所述的方法,其中,所述方法还包括:所述网络侧设备发送第二门限,所述第二门限与信道质量有关;当所述信道质量高于和/或等于所述第二门限的第一取值时,所述终端的切换时间包括:PCell切换时间与PSCell添加时间之和;当所述信道质量高于和/或等于所述第二门限的第二取值时,所述终端的切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;当所述信道质量高于和/或等于所述第二门限的第三取值时,所述终端的切换时间包括PCell切换时间和/或PSCell添加时间;当所述信道质量高于和/或等于所述第二门限的第四取值时,所述终端的切换时间包括PCell小区搜索的时间与PScell小区搜索的时间之和;当所述信道质量高于和/或等于所述第二门限的第五取值时,所述终端的切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 根据权利要求13所述的方法,其中,所述方法还包括:所述网络侧设备接收第三信息;其中,所述第三信息包括以下一项或多项:所述终端是否支持基于并行处理的方式进行PCell切换和PSCell添加;所述终端是否支持基于串行处理的方式进行PCell切换和PSCell添加;所述终端是否支持切换时间包括PCell切换时间与PSCell添加时间之和;所述终端是否支持切换时间包括PCell切换时间和PSCell添加时间二者中的最大值;所述终端是否支持切换时间包括PCell切换时间和/或PSCell添加时间;所述终端是否支持切换时间包括PCell小区搜索的时间与PSCell小区搜索的时间之和;所述终端是否支持切换时间包括PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间与PSCell同步的时间之和;第十一指示信息,所述第十一指示信息指示在第二操作之后进行PSCell添加;第十二指示信息,所述第十二指示信息指示所述终端支持第三操作的并行处理;第十三指示信息,所述第十三指示信息指示所述终端支持第四操作的串行处理。
- 根据权利要求18所述的方法,其中,所述第二操作包括以下之一:向PCell发送MSG1;接收到PCell发送的MSG2;向PCell发送MSG3;接收到PCell发送的MSG4;向PSCell发送MSGA;接收到PCell发送的MSGB。
- 根据权利要求15所述的方法,其中,所述方法还包括:所述网络侧设备发送第四信息;其中,所述第四信息包括以下一项或多项:第十四指示信息,所述第十四指示信息指示所述终端是否通过并行处理的方式进行PSCell添加;第十五指示信息,所述第十五指示信息指示所述终端是否通过串行处理的方式进行PSCell添加;第十六指示信息,所述第十六指示信息表示第五操作进行并行处理;第十七指示信息,所述第十七指示信息表示第六操作进行串行处理。
- 一种切换装置,应用于终端,包括:切换模块,用于进行切换,所述终端的切换时间包括以下至少一项:PCell切换时间与PSCell添加时间之和;PCell切换时间和PSCell添加时间二者中的最大值;PCell切换时间和/或PSCell添加时间;PCell小区搜索的时间与PSCell小区搜索的时间之和;PCell小区搜索的时间、PCell同步的时间、PSCell小区搜索的时间和PSCell同步的时间之和。
- 一种切换装置,应用于网络侧设备,包括:第二发送模块,用于发送第一信息;其中,所述第一信息包括以下一项或多项:第一指示信息,所述第一指示信息指示终端在向PCell发送PRACHpreamble之后进行PSCell添加;第二指示信息,所述第二指示信息指示所述终端在接收到PCell发送的RAR之后进行PSCell添加;第三指示信息,所述第三指示信息指示所述终端在接收到PCell发送的MSG4之后进行PSCell添加;第四指示信息,所述第四指示信息指示所述终端在向PCell发送MSGA之后进行PSCell添加;第五指示信息,所述第五指示信息指示所述终端在接收到PCell发送的MSGB之后进行PSCell添加。
- 一种通信设备,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求1-20中任一项所述的方法的步骤。
- 一种可读存储介质,所述可读存储介质上存储有程序,所述程序被处理器执行时实现包括如权利要求1至20中任一项所述的方法的步骤。
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