WO2023011545A1 - Procédé et appareil de transfert de cellule, équipement utilisateur et support de stockage - Google Patents

Procédé et appareil de transfert de cellule, équipement utilisateur et support de stockage Download PDF

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Publication number
WO2023011545A1
WO2023011545A1 PCT/CN2022/110033 CN2022110033W WO2023011545A1 WO 2023011545 A1 WO2023011545 A1 WO 2023011545A1 CN 2022110033 W CN2022110033 W CN 2022110033W WO 2023011545 A1 WO2023011545 A1 WO 2023011545A1
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cell
tci state
target
unified
pci
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PCT/CN2022/110033
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English (en)
Chinese (zh)
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王臣玺
孙鹏
杨宇
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维沃移动通信有限公司
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Publication of WO2023011545A1 publication Critical patent/WO2023011545A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application belongs to the technical field of communication, and specifically relates to a cell switching method, device, user equipment and storage medium.
  • TCI Transmission Configuration Indication
  • Carrier Aggregation Carrier Aggregation, CA
  • CC Component Carrier
  • the network side equipment needs to send RRC reconfiguration signaling to instruct the UE to perform switching, so there will be problems of long cell switching delay and poor flexibility.
  • Embodiments of the present application provide a cell switching method, device, user equipment, and storage medium, which can solve the problems of long cell switching delay and poor flexibility in a CA scenario.
  • a cell handover method includes: the UE switches the transmission mode of the target cell according to the target indication information; wherein the target indication information is used to indicate the target unified TCI state, and the target cell includes the following At least one item: a first cell corresponding to the UE and a second cell corresponding to the UE.
  • a cell switching device in a second aspect, includes: an execution module. Wherein, the execution module is configured to switch the transmission mode of the target cell according to the target indication information; wherein, the target indication information is used to indicate the target unified TCI state, and the target cell includes at least one of the following: the first cell corresponding to the UE and the UE corresponding to the second cell.
  • a UE in a third aspect, includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor. The steps of the method described in the first aspect are realized.
  • a UE including a processor and a communication interface, wherein the processor is configured to switch the transmission mode of the target cell according to the target indication information; wherein the target indication information is used to indicate the target unified TCI state , the target cell includes at least one of the following: a first cell corresponding to the UE and a second cell corresponding to the UE.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented.
  • a sixth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and implement the method as described in the first aspect .
  • a computer program/program product is provided, the computer program/program product is stored in a non-transitory storage medium, and the program/program product is executed by at least one processor to implement the program described in the first aspect The steps of the cell handover method.
  • the UE switches the transmission mode for the target cell according to the target indication information
  • the target indication information is used to indicate the target unified TCI state
  • the target cell includes the first cell and/or the second cell corresponding to the UE.
  • the UE can switch the transmission mode of the target cell according to the indication information of the target unified TCI state, so as to realize the fast switching of the cell, compared with the traditional network that explicitly sends the RRC reconfiguration signaling Informing the UE to perform cell switching improves system flexibility, reduces cell switching delay, and improves cell switching flexibility.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a cell handover method provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a cell handover device provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a hardware structure of a UE provided by an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-advanced, LTE-A Long Term Evolution-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
  • 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 technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies.
  • the following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) communication system.
  • 6th Generation 6th Generation
  • FIG. 1 shows a schematic structural diagram of a wireless communication system to which this embodiment of the present application is applicable.
  • the wireless communication system includes UE 11 and network side equipment 12.
  • UE 11 can also be called terminal equipment or terminal
  • UE 11 can be mobile phone, tablet computer (tablet computer), laptop computer (laptop computer) or notebook computer, 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), wearable device (wearable device) or vehicle-mounted equipment (VUE), pedestrian terminal (PUE ) and other terminal-side devices, and wearable devices include: smart watches, bracelets, earphones, glasses, etc.
  • the network side device 12 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 Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node, transmission Receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this 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.
  • the analog beamforming is transmitted in full bandwidth, and each polarization element on the panel of each high-frequency antenna array can only transmit analog beams in a time-division multiplexed manner.
  • the shaping weight of the analog beam is realized by adjusting the parameters of the RF front-end phase shifter and other equipment.
  • the training of analog beamforming vectors is usually carried out in a polling manner, that is, the array elements in each polarization direction of each antenna panel transmit training signals (i.e., candidate beamforming vectors ), the terminal feeds back the beam report after the measurement, and the network side uses the training signal to realize the simulated beam transmission in the next service transmission.
  • the content of the beam report usually includes several optimal transmit beam identities and the measured received power of each transmit beam.
  • the network When performing beam measurement, the network configures a reference signal resource set (RS resource set), which includes at least one reference signal resource, such as SSB resource or CSI-RS resource.
  • RS resource set which includes at least one reference signal resource, such as SSB resource or CSI-RS resource.
  • the UE measures the L1-RSRP/L1-SINR of each RS resource, and reports at least one optimal measurement result to the network, and the reported content includes SSBRI or CRI, and L1-RSRP/L1-SINR.
  • the content of the report reflects at least one optimal beam and its quality, and is used by the network to determine the beam used to send the channel or signal to the UE.
  • the network can make beam indications for downlink and uplink channels or reference signals, which are used to establish beam links between the network and UE to realize the transmission of channels or reference signals.
  • the network uses RRC signaling to configure K TCI (TCI: Transmission Configuration Indication) state for each CORESET.
  • K TCI Transmission Configuration Indication
  • MAC CE indicates or activates 1 TCI state.
  • K 1
  • no additional MAC CE command is required.
  • the UE monitors the PDCCH it uses the same QCL (quasi-colocation, Quasi-colocation) for all search spaces in the CORESET, that is, the same TCI state to monitor the PDCCH.
  • the referenceSignal in the TCI state (such as periodic CSI-RS resource, semi-persistent CSI-RS resource, SS block, etc.) and the UE-specific PDCCH DMRS port are spatially QCL. The UE can know which receiving beam to use to receive the PDCCH according to the TCI state.
  • the network configures M TCI states through RRC signaling, and then uses MAC CE commands to activate 2N TCI states, and then notifies the TCI state through the N-bit TCI field of DCI.
  • the referenceSignal in the TCI state is related to the required
  • the DMRS port of the scheduled PDSCH is QCL.
  • the UE can know which receiving beam to use to receive the PDSCH according to the TCI state.
  • the network configures QCL information for the CSI-RS resource through RRC signaling.
  • the network indicates its QCL information when activating a CSI-RS resource from the CSI-RS resource set configured by RRC through the MAC CE command.
  • the network configures QCL for the CSI-RS resource through RRC signaling, and uses DCI to trigger CSI-RS.
  • the network uses RRC signaling to configure spatial relation information for each PUCCH resource through the parameter PUCCH-SpatialRelationInfo.
  • the spatial relation information configured for PUCCH resource contains multiple, use MAC-CE to indicate or activate one of the spatial relation information.
  • the spatial relation information configured for the PUCCH resource contains only one, no additional MAC CE command is required.
  • the spatial relation information of PUSCH is when the DCI carried by PDCCH schedules PUSCH, each SRI codepoint of the SRI field in DCI indicates an SRI, and the SRI is used to indicate the spatial relation information of PUSCH.
  • the network configures spatial relation information for the SRS resource through RRC signaling.
  • the SRS type is semi-persistent SRS
  • the network activates one from a set of spatial relation information configured by RRC through the MAC CE command.
  • the SRS type is aperiodic SRS
  • the network configures spatial relation information for the SRS resource through RRC signaling.
  • the above beam information, spatial relation information, spatial domain transmission filter information, spatial filter information, TCI state information, QCL information, QCL parameters, spatial relation information, etc. have approximately the same meaning.
  • the downlink beam information can usually be represented by TCI state information and QCL information.
  • Uplink beam information can usually be expressed using spatial relation information.
  • a unified TCI frame design is introduced.
  • one is joint TC, that is, the uplink and downlink use one beam uniformly.
  • the DCI indicates a TCI state
  • all uplink and downlink channels and/or signals apply the TCI state.
  • DCI indicates a pair of beams, that is, two TCI states, called separate TCI, one is applied to all downlink channels or signals, and one is applied to all uplink channels or signals.
  • the sharing methods include the following two:
  • the unified TCI state (unified TCI state) indicated by DCI in the reference BWP/CC corresponds to the QCL Type resource RS as the unified TCI state of all CCs or BWPs;
  • the RS on each BWP/CC corresponding to the QCL Type Resource ID in the unified TCI state indicated by the DCI serves as the unified TCI state on the respective BWP/CC.
  • the UE will measure the reference signal of the neighboring cell, and determine whether to perform cell handover based on this.
  • a series of uniformly distributed measurement samples are usually averaged within the measurement period, which can be called high-level (such as layer 3: L3) measurement.
  • the L3 measurement is obtained by performing L3 filtering based on the L1 measurement result.
  • the period of the SMTC window can be set to be the same as SSB, such as 5/10/20/40/80/160ms, etc., and the measurement time interval can be set to 1/2/3/4/5ms, etc., which is related to the number of SSBs sent relevant.
  • the UE measures the SSB according to the SMTC configuration information, and then reports the measurement result to the gNB or performs cell selection.
  • SMTC Synchronization Signal/Physical Broadcast Channel Block Measurement Timing Configuration (SS/PBCH block measurement timing configuration).
  • the time-frequency domain positions of the SSB on different CCs are different, so the rate match pattern (rate match pattern) is determined according to the SSB resource allocation on different CCs, as follows:
  • the PDSCH comes from the target CC, use the rate matching mode on the target CC.
  • the embodiment of the present application provides a method of L1-based cell switching and rate matching mode switching in a CA scenario. Compared with the traditional network that explicitly sends RRC reconfiguration signaling to notify the UE to perform cell switching, the flexibility of the system is improved. , reducing the cell handover delay.
  • FIG. 2 shows a flow chart of the cell switching method provided in the embodiment of the present application.
  • the cell handover method provided in the embodiment of the present application may include the following steps 201 and 202 .
  • step 201 the UE acquires target indication information.
  • step 202 the UE switches the transmission mode of the target cell according to the target indication information.
  • the above target indication information is used to indicate a target unified TCI state
  • the target cell includes at least one of the following: a first cell corresponding to the UE and a second cell corresponding to the UE.
  • the cell handover method provided in the embodiment of this application is also applicable to the TRP handover between cells, that is, the first cell and the second cell are replaced by the first TRP and the second cell. TRP.
  • the UE may determine the unified TCI status of the target cell according to the target unified TCI status information (such as the target unified TCI status identifier) included in the target indication information, and determine that PCI switching occurs according to the unified TCI status of the target cell the cell, so as to switch the transmission mode for the cell where the PCI handover occurs.
  • the target unified TCI status information such as the target unified TCI status identifier
  • the above-mentioned target indication information may be sent by the network side device, or may also be stipulated in a protocol, or may also be pre-configured, or may also be independently determined by the UE.
  • the above-mentioned first cell is the primary cell
  • the second cell is the secondary cell
  • the foregoing transmission mode includes at least one of the following: a unified TCI state and a rate matching mode.
  • the above target indication information is any of the following: DCI, MAC CE signaling, RRC signaling.
  • the above target indication information is also used to indicate the source cell or the source TRP corresponding to the unified TCI state.
  • the above unified TCI state is a unified TCI state in a unified TCI state pool;
  • the unified TCI state pool is a unified TCI state pool shared by the first information in the third cell.
  • the third cell includes at least one of the following: the first cell, the second cell, all cells in the CC list configured by the network, neighboring cells of the first cell, and the second cell Neighboring cells of all cells in the CC list configured by the network.
  • the foregoing first information includes at least one of the following: a reference signal RS, a control channel, and a data channel.
  • step 202 may be specifically implemented through the following steps 202a to 202c.
  • Step 202a the UE determines the first unified TCI state of the target cell according to the target indication information.
  • step 202a may be specifically implemented through the following steps 202a1 and 202a2.
  • step 202a1 the UE determines a QCL type resource RS identifier in the target unified TCI state as the target RS identifier according to the first preset rule.
  • step 202a2 the UE determines the first RS as the first unified TCI state of the target cell.
  • the above-mentioned first RS is an RS corresponding to the target RS identifier in the target cell.
  • the quasi-co-located source reference signal corresponding to the first unified TCI state of the target cell is the RS corresponding to the target RS identifier in the target cell, and the first unified TCI state of the target cell can be understood as a candidate unified TCI state, Not yet used for data reception.
  • step 202b the UE determines the cell where the PCI handover occurs according to the first unified TCI state of the target cell.
  • step 202b may be specifically implemented through the following step 202b1 or step 202b2.
  • Step 202b1 When the target cell includes the fourth cell and the first unified TCI state of the fourth cell satisfies the first condition, the UE determines that the fourth cell is the cell where PCI handover occurs, and the fourth cell is the first cell or the second cell. Second district.
  • Step 202b2 when the target cell includes the first cell and the second cell, and the first joint TCI state of the fifth cell in the target cell satisfies the first condition, the UE determines that the fifth cell is a cell where PCI handover occurs, and the second The five cells include at least one of the following: the first cell and the second cell.
  • the above-mentioned first condition is any of the following:
  • the first RS corresponding to the first unified TCI state of the target cell belongs to a neighboring cell of the target cell;
  • the quasi-co-located QCL resource RS of the first RS corresponding to the first unified TCI state of the target cell is an adjacent cell of the target cell;
  • the first unified TCI state of the target cell carries the PCI of the neighbor cell of the target cell, or an indication of the association information of the neighbor cell of the target cell;
  • the TCI state of the first RS corresponding to the first unified TCI state of the target cell carries the PCI of the neighboring cell of the target cell, or an indication of the association information of the neighboring cell of the target cell.
  • the above first condition is specifically any of the following:
  • the first RS corresponding to the first unified TCI state of the fourth cell belongs to a neighboring cell of the fourth cell;
  • the quasi-co-located QCL resource RS of the first RS corresponding to the first unified TCI state of the fourth cell is an adjacent cell of the fourth cell;
  • the first unified TCI state of the fourth cell carries the PCI of the neighboring cell of the fourth cell, or an indication of the associated information of the neighboring cell of the fourth cell;
  • the TCI state of the first RS corresponding to the first unified TCI state of the fourth cell carries the PCI of the neighboring cell of the fourth cell, or an indication of the association information of the neighboring cell of the fourth cell.
  • the above first condition is specifically any of the following:
  • the first RS corresponding to the first unified TCI state of the fifth cell belongs to a neighboring cell of the fifth cell;
  • the quasi-co-located QCL resource RS of the first RS corresponding to the first unified TCI state of the fifth cell is an adjacent cell of the fifth cell;
  • the first unified TCI state of the fifth cell carries the PCI of the neighboring cell of the fifth cell, or an indication of the associated information of the neighboring cell of the fifth cell;
  • the TCI state of the first RS corresponding to the first unified TCI state of the fifth cell carries the PCI of the neighboring cell of the fifth cell, or an indication of the associated information of the neighboring cell of the fifth cell.
  • the indication of the above-mentioned neighbor cell association information is used to determine the neighbor cell association information;
  • the neighbor cell association information includes at least one of the following: the period of the neighbor cell RS, the time domain position of the neighbor cell RS, the neighbor cell RS The transmission power of the cell RS and the PCI of the adjacent cell.
  • step 202c the UE performs the switching of the transmission mode for the cell where the PCI switching occurs.
  • step 202c may be specifically implemented through the following step 202c1.
  • Step 202c1 when the third condition is satisfied, the UE determines that the second unified TCI state of the target cell is the first unified TCI state of the target cell.
  • the above-mentioned third condition includes at least one of the following:
  • the first RS corresponding to the first unified TCI state of the target cell and the RS corresponding to the unified TCI state of other cells except the target cell belong to different cells;
  • the PCI carried in the first unified TCI state of the target cell is different from the PCI carried in the unified TCI state of other cells except the target cell;
  • the second unified TCI state of the target cell may be understood as a unified TCI state that will be used for data reception or has been used for data reception.
  • the UE may determine or update the second unified TCI state of the target cell to the first unified TCI state of the target cell. TCI status.
  • the second unified TCI state of the target cell is any of the following:
  • Unified TCI status of some channels and/or RSs in the target cell
  • Unified TCI status of all channels and/or RSs in the target cell Unified TCI status of all channels and/or RSs in the target cell.
  • step 202c may specifically be implemented through the following step 202c2.
  • Step 202c2 when the first unified TCI state of the target cell satisfies the third condition, the UE performs rate matching mode switching for the cell where the PCI handover occurs.
  • the rate matching mode of the secondary cell changes according to the switching of the rate matching mode of the primary cell.
  • the first cell and the second cell are respectively configured with multiple rate matching modes
  • Multiple rate matching modes are associated with multiple PCIs, and each rate matching mode corresponds to a PCI;
  • Multiple rate matching modes are related to RS configuration information of multiple neighboring cells.
  • the rate matching mode of the target cell is determined by a second preset rule
  • the second default rule is at least one of the following:
  • the rate matching mode determined according to the data scheduling situation of other cells than the target cell.
  • step 202c may specifically be implemented through the following step 202c3.
  • the UE falls back to the single carrier scheduling state, and determines the serving cell according to the third preset rule and deactivates other cells in the CC list, and determines the second unified TCI state of the serving cell is the first unified TCI state of the serving cell.
  • the serving cell is the first cell or the second cell.
  • the fourth condition includes at least one of the following:
  • the first RS corresponding to the first unified TCI state of the target cell and the RS corresponding to the unified TCI state of at least one other cell except the target cell belong to the same cell;
  • the PCI carried in the first unified TCI state of the target cell is the same as the PCI carried in the unified TCI state of at least one other cell except the target cell.
  • the second unified TCI state of the serving cell is any of the following:
  • Unified TCI status of some channels and/or RSs in the serving cell
  • Unified TCI status of all channels and/or RSs in the serving cell is not limited.
  • the rate matching mode of the above-mentioned serving cell is determined by the PCI associated with the scheduling and transmission of the Physical Downlink Shared Channel (PDSCH);
  • PDSCH Physical Downlink Shared Channel
  • the rate matching mode is determined according to the RS resource configuration associated with the PCI before switching;
  • the PDSCH schedules the switched PCI corresponding to the transmission associated serving cell, and the rate matching mode is determined according to the RS resource configuration associated with the switched PCI.
  • the UE in the CA scenario, based on the L1 cell handover, the UE can switch the transmission mode according to the indication information (ie target indication information) on the network side.
  • the indication information ie target indication information
  • the UE receives indication information from the network side in the first cell, where the indication information is used to indicate PCI switching between the first cell and/or the second cell and a transmission mode after the PCI switching.
  • the above indication information may be signaling information carrying a unified TCI state (unified TCI state).
  • the foregoing signaling information may be DCI, MAC CE, or RRC.
  • the above-mentioned signaling information may also include an indication of the source cell/TRP corresponding to the unified TCI state, such as the PCI of the source cell, bit mapping indication or control resource set pool index (CORESET Pool index) . It should be noted that this solution can aim at the scenario of indicating a unified TCI state across carriers.
  • PCI switching means that some or all data received by the UE is converted from being sent by the source cell/TRP to being sent by the target cell/TRP.
  • the unified TCI state of all or part of the data channels or control channels is determined according to the indication of the unified TCI state in the indication information, and RSs directly or indirectly associated with the unified TCI state belong to neighboring cells.
  • the transmission mode after PCI switching includes at least one of the following:
  • Unified TCI status on the first cell and/or the second cell
  • Rate matching mode on the first cell and/or on the second cell rate matching mode
  • the foregoing first cell may be a primary cell or a secondary cell.
  • the unified TCI state is a unified TCI state in a unified TCI state pool (unified TCI state pool).
  • the unified TCI status includes at least one of the following:
  • the first information in the third cell may share a unified TCI state pool, that is, the unified TCI states of the first information in the third cell all come from the same unified TCI state pool.
  • the foregoing first information is at least one of an RS, a control channel, or a data channel.
  • the above-mentioned first information may correspond to one or more unified TCI states, for example, for data transmission channels (PDCCH, PDSCH, PUCCH, PUSCH), the unified TCI status of all uplink and/or downlink channels
  • the TCI state is the same; for the RS, the concept of unified TCI may not be followed, that is, different uplink and/or downlink RSs may correspond to different TCI states.
  • the third cell may include at least one of the following:
  • Neighboring cells of all cells in the CC list configured by the network are Neighboring cells of all cells in the CC list configured by the network.
  • the UE after determining that the indication information is the first indication information, the UE performs PCI switching.
  • the first indication information is that the unified TCI state carried in the signaling information belongs to a neighboring cell of the fourth cell.
  • the foregoing fourth cell is the first cell or the second cell.
  • the UE determines that the unified TCI state belongs to a neighboring cell of the fourth cell if any of the following conditions is met in the unified TCI state:
  • the unified TCI state there is at least one QCL type RS ID or the RS in the fourth cell indicated by all QCL type RS IDs belongs to the neighbor cell of the fourth cell;
  • the QCL resource RS of the RS in at least one QCL type RS ID or all QCL type RS IDs indicated by the QCL type RS ID in the unified TCI state belongs to the neighboring cell of the fourth cell;
  • the unified TCI state carries the PCI of the neighboring cell of the fourth cell, or an indication of the associated information of the neighboring cell of the fourth cell;
  • At least one QCL type RS ID or the TCI state of the RS in the fourth cell corresponding to all QCL type RS IDs carries the PCI of the neighboring cell of the fourth cell, or the associated information of the neighboring cell of the fourth cell instruct.
  • the indication of the above-mentioned neighbor cell association information may determine the neighbor cell association information in a bit mapping manner.
  • the above-mentioned neighboring cell association information includes at least one of the following:
  • the transmit power of the neighboring cell RS The transmit power of the neighboring cell RS
  • the physical cell identifier PCI of the neighboring cell is the physical cell identifier PCI of the neighboring cell.
  • the UE may determine the unified TCI state of the first cell and/or the second cell according to the first indication information.
  • the UE determines the cell where the PCI handover occurs according to the first indication information, and the specific methods include:
  • a QCL type resource RS ID in the unified TCI state indicated in the signaling information as the target RS ID, for example, QCL type A RS ID;
  • the UE considers that PCI handover occurs in the fourth cell: the RS corresponding to the target RS ID in the fourth cell belongs to the neighboring cell, or the TCI state of the RS corresponding to the target RS ID in the fourth cell carries the PCI of the neighboring cell Or the indication of the association information of the adjacent cell.
  • the unified TCI state of the cell where the PCI handover occurs is the unified TCI state in the first indication information.
  • the first condition includes at least one of the following:
  • PCI handover occurs in at least one cell
  • RSs corresponding to the unified TCI state in the first indication information on different cells correspond to different cells
  • the TC state of the RS corresponding to the unified TCI state in the first indication information on different cells is associated with different cells.
  • the unified TCI state of the cell where the PCI handover occurs refers to any of the following situations:
  • Unified TCI status of some channels and/or RSs in the cell where PCI handover occurs
  • Unified TCI status of all channels and/or RSs in a cell where PCI handover occurs is not limited.
  • the UE when the fourth condition is met, falls back to the single-carrier scheduling state, and determines the serving cell according to preset rules and deactivates other cells in the CC list.
  • the unified TCI state in is the unified TCI state of the serving cell.
  • the fourth condition includes at least one of the following:
  • the part corresponding to the unified TCI state in the first indication information on different cells or all RSs correspond to the same cell
  • the part corresponding to the unified TCI state in the first indication information on different cells or the TC state of all RSs are associated with the same cell.
  • all RSs corresponding to the target RS ID in all cells are associated with the same PCI, or the TCI states of all RSs carry the same PCI of neighboring cells, or the TCI states of all RSs carry the same information about neighboring cells instruct;
  • the unified TCI state of the serving cell refers to any of the following situations:
  • Unified TCI status of some channels and/or RSs in the serving cell
  • Unified TCI status of all channels and/or RSs in the serving cell
  • the UE determines the rate matching mode of the first cell and/or the second cell according to the first indication information.
  • multiple rate matching modes are respectively configured in the first cell or the second cell; multiple rate matching modes can be associated with multiple PCIs; multiple rate matching modes can be associated with multiple neighboring cells Related to RS configuration information.
  • the UE if the rate matching mode is associated with a PCI, the UE considers that the RS resource in the cell corresponding to the PCI is unavailable for PDSCH scheduling and transmission of the current serving cell.
  • the rate matching mode of the fifth cell may be divided into a first rate matching mode and a second rate matching mode.
  • the fifth cell is at least one of the first cell and the second cell.
  • the first rate matching mode may be determined according to a first preset rule
  • the second rate matching mode may be determined according to a second preset rule
  • the first preset rule includes any of the following situations:
  • the PDSCH scheduling and transmission of the second cell are associated with the PCI after switching
  • the rate matching mode of the fifth cell is that the RS resource associated with the PCI before the switching in the first cell and the second Combination of SSB resources associated with the switched PCI in the cell.
  • the second preset rule includes any of the following situations:
  • the rate matching mode of the fifth cell is determined according to the data scheduling conditions of other cells except the fifth cell.
  • the PDSCH scheduling and transmission of the second cell are associated with the PCI before the handover
  • the rate matching mode of the fifth cell is that the RS resource associated with the PCI after the handover in the first cell is related to the second Combination of SSB resources associated with the PCI before handover in the cell.
  • the UE considers that the PDSCH scheduling and transmission associated with the PCI before handover should be based on the first rate matching mode.
  • the UE considers that the PDSCH scheduling and transmission associated with the switched PCI should be based on the second rate matching mode.
  • the UE falls back to the single-carrier scheduling state, and determines the serving cell according to preset rules and deactivates other cells in the CC list,
  • the rate matching mode of the serving cell is determined according to the PCI associated with the PDSCH scheduling and transmission.
  • the PDSCH schedules the PCI before the handover corresponding to the serving cell associated with the transmission, and the rate matching mode is determined according to the RS resource configuration associated with the PCI before the handover.
  • the PDSCH schedules the switched PCI corresponding to the transmission associated serving cell, and the rate matching mode is determined according to the RS resource configuration associated with the switched PCI.
  • An embodiment of the present application provides a cell switching method.
  • the UE switches the transmission mode of the target cell according to the target indication information.
  • the target indication information is used to indicate the target unified TCI state.
  • the target cell includes the first cell corresponding to the UE and/or Second district.
  • the UE can switch the transmission mode of the target cell according to the indication information of the target unified TCI state, so as to realize the fast switching of the cell, compared with the traditional network that explicitly sends the RRC reconfiguration signaling Informing the UE to perform cell switching improves system flexibility, reduces cell switching delay, and improves cell switching flexibility.
  • the cell handover method provided in the embodiment of the present application may be executed by a UE, or a cell handover device, or a control module in the cell handover device for executing the cell handover method.
  • the method for performing cell handover by the UE is taken as an example to illustrate the cell handover apparatus provided in the embodiment of the present application.
  • Fig. 3 shows a possible structural diagram of a cell handover apparatus involved in the embodiment of the present application.
  • the cell handover device 60 may include: an acquisition module 61 and an execution module 62 .
  • the acquiring module 61 is configured to acquire target indication information.
  • the execution module 62 is configured to switch the transmission mode of the target cell according to the target indication information; wherein, the target indication information is used to indicate the target unified TCI state, and the target cell includes at least one of the following: the first cell corresponding to the UE and the first cell corresponding to the UE of the second district.
  • the above-mentioned first cell is a primary cell
  • the second cell is a secondary cell
  • the foregoing transmission manner includes at least one of the following: a unified TCI state and a rate matching mode.
  • the above-mentioned target indication information is any one of the following: downlink control information DCI, medium access control layer control element MAC CE signaling, and radio resource control RRC signaling.
  • the above target indication information is also used to indicate the source cell or the source transmission and reception point TRP corresponding to the unified TCI state.
  • the above-mentioned unified TCI status is a unified TCI status in a unified TCI status pool;
  • the unified TCI status pool is a unified TCI status pool shared by the first information in the third cell;
  • the third cell Including at least one of the following: the first cell, the second cell, all cells in the carrier component CC list configured by the network, the adjacent cells of the first cell, the adjacent cells of the second cell, and all cells in the CC list configured by the network
  • the first information includes at least one of the following: a reference signal RS, a control channel, and a data channel.
  • the execution module 62 is specifically configured to determine the first unified TCI state of the target cell according to the target indication information; and determine the cell where the PCI handover occurs according to the first unified TCI state of the target cell; And, for the cell where the PCI handover occurs, the transmission mode is switched.
  • the above execution module 62 is specifically configured to determine a QCL type resource RS identifier in the target unified TCI state as the target RS identifier according to the first preset rule; and determine the first RS as The first unified TCI state of the target cell, and the first RS is an RS corresponding to the target RS identifier in the target cell.
  • the above execution module 62 is specifically configured to determine that the fourth cell is a case where PCI occurs when the target cell includes the fourth cell and the first unified TCI state of the fourth cell satisfies the first condition.
  • the fourth cell is the first cell or the second cell; or, when the target cell includes the first cell and the second cell, and the first joint TCI state of the fifth cell in the target cell satisfies the first condition
  • the fifth cell is a cell where PCI handover occurs, and the fifth cell includes at least one of the following: the first cell and the second cell; wherein the first condition is any of the following:
  • the first RS corresponding to the first unified TCI state of the target cell belongs to a neighboring cell of the target cell;
  • the quasi-co-located QCL resource RS of the first RS corresponding to the first unified TCI state of the target cell is an adjacent cell of the target cell;
  • the first unified TCI state of the target cell carries the PCI of the neighbor cell of the target cell, or an indication of the association information of the neighbor cell of the target cell;
  • the TCI state of the first RS corresponding to the first unified TCI state of the target cell carries the PCI of the neighboring cell of the target cell, or an indication of the association information of the neighboring cell of the target cell.
  • the indication of the above-mentioned neighbor cell association information is used to determine the neighbor cell association information;
  • the neighbor cell association information includes at least one of the following: the period of the neighbor cell RS, the time domain position of the neighbor cell RS, the neighbor cell RS The transmission power of the RS and the PCI of the adjacent cell.
  • the execution module 62 is specifically configured to determine that the second unified TCI state of the target cell is the first unified TCI state of the target cell when the third condition is met; wherein, the third condition include at least one of the following:
  • the first RS corresponding to the first unified TCI state of the target cell and the RS corresponding to the unified TCI state of other cells except the target cell belong to different cells;
  • the PCI carried in the first unified TCI state of the target cell is different from the PCI carried in the unified TCI state of other cells except the target cell;
  • the second unified TCI state of the target cell is any of the following:
  • Unified TCI status of some channels and/or RSs in the target cell
  • Unified TCI status of all channels and/or RSs in the target cell Unified TCI status of all channels and/or RSs in the target cell.
  • the execution module 62 is specifically configured to execute rate matching mode switching for a cell where PCI switching occurs when the first unified TCI state of the target cell satisfies the third condition.
  • the first cell and the second cell are respectively configured with multiple rate matching modes
  • Multiple rate matching modes are associated with multiple PCIs, and each rate matching mode corresponds to a PCI;
  • Multiple rate matching modes are related to RS configuration information of multiple neighboring cells.
  • the rate matching mode of the target cell is determined by a second preset rule
  • the second default rule is at least one of the following:
  • the rate matching mode determined according to the data scheduling situation of other cells than the target cell.
  • the execution module 62 is specifically configured to fall back to the single-carrier scheduling state when the fourth condition is met, and determine the serving cell according to the third preset rule and deactivate the cell in the CC list. For other cells, determine that the second unified TCI state of the serving cell is the first unified TCI state of the serving cell; where the serving cell is the first cell or the second cell; where the fourth condition includes at least one of the following:
  • the first RS corresponding to the first unified TCI state of the target cell and the RS corresponding to the unified TCI state of at least one other cell except the target cell belong to the same cell;
  • the PCI carried in the first unified TCI state of the target cell is the same as the PCI carried in the unified TCI state of at least one other cell except the target cell.
  • the second unified TCI state of the serving cell is any of the following:
  • Unified TCI status of some channels and/or RSs in the serving cell
  • Unified TCI status of all channels and/or RSs in the serving cell is not limited.
  • the rate matching mode of the serving cell is determined by the PCI associated with the physical downlink shared channel PDSCH scheduling and transmission;
  • the rate matching mode is determined according to the RS resource configuration associated with the PCI before switching;
  • the PDSCH schedules the switched PCI corresponding to the transmission associated serving cell, and the rate matching mode is determined according to the RS resource configuration associated with the switched PCI.
  • the embodiment of the present application provides a cell switching device.
  • the cell switching device can switch the transmission mode of the target cell according to the indication information of the target unified TCI state, so as to realize the fast switching of the cell.
  • RRC reconfiguration signaling to notify the UE to perform cell switching improves system flexibility, reduces cell switching delay, and improves cell switching flexibility.
  • the cell handover apparatus in the embodiment of the present application may be a device, a device with an operating system or a UE, and may also be a component, an integrated circuit, or a chip in the UE.
  • the apparatus or UE may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of UE 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (Personal Computer, PC), a television ( Television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the cell handover device provided in the embodiment of the present application can realize each process realized in the above method embodiment, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application further provides a communication device 500, including a processor 501, a memory 502, and programs or instructions stored in the memory 502 and operable on the processor 501,
  • a communication device 500 including a processor 501, a memory 502, and programs or instructions stored in the memory 502 and operable on the processor 501
  • the communication device 500 is a UE
  • the program or instruction is executed by the processor 501
  • various processes of the foregoing method embodiments can be implemented, and the same technical effect can be achieved.
  • the embodiment of the present application also provides a UE, including a processor and a communication interface, and the processor is used to switch the transmission mode of the target cell according to the target indication information; wherein, the target indication information is used to indicate the target unified TCI state, and the target cell includes At least one of the following: a first cell corresponding to the UE and a second cell corresponding to the UE.
  • This UE embodiment corresponds to the UE side method embodiment above, and each implementation process and implementation manner of the above method embodiment can be applied to this UE embodiment, and can achieve the same technical effect.
  • FIG. 5 is a schematic diagram of a hardware structure of a UE implementing an embodiment of the present application.
  • the UE 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc. at least some of the components.
  • the UE 100 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 110 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 UE structure shown in FIG. 5 does not limit the UE, and the UE may include more or less components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042, and the graphics processing unit 1041 is used by the image capturing device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 107 includes a touch panel 1071 and other input devices 1072 .
  • the touch panel 1071 is also called a touch screen.
  • the touch panel 1071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 1072 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 described in detail here.
  • the radio frequency unit 101 receives the downlink data from the network side device, and processes it to the processor 110; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 101 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 109 can be used to store software programs or instructions as well as various data.
  • the memory 109 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 109 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may 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
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 110 may include one or more processing units; optionally, the processor 110 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 110 .
  • the processor 110 is configured to switch the transmission mode of the target cell according to the target indication information; wherein, the target indication information is used to indicate the target unified TCI state, and the target cell includes at least one of the following: the first cell corresponding to the UE and The second cell corresponding to the UE.
  • the embodiment of the present application provides a UE.
  • the UE can switch the transmission mode of the target cell according to the indication information of the target unified TCI state, so as to realize the fast switching of the cell.
  • the RRC reconfiguration signaling notifies the UE to perform cell switching, which improves system flexibility, reduces cell switching delay, and improves cell switching flexibility.
  • the UE provided in the embodiment of the present application can implement each process implemented in the foregoing method embodiment, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by a processor, each process of the above-mentioned cell handover method embodiment is realized, and the same To avoid repetition, the technical effects will not be repeated here.
  • the processor is the processor in the UE 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 embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above cell handover method embodiment
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run programs or instructions to implement the above cell handover method embodiment
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to enable a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in various embodiments of the present application.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil de transfert de cellule, un équipement utilisateur et un support de stockage. Selon les modes de réalisation de la présente invention, le procédé de transfert de cellule comprend les étapes suivantes : un UE effectue un transfert de mode de transmission sur une cellule cible en fonction d'informations d'indication cibles, les informations d'indication cibles étant utilisées pour indiquer un état TCI unifié cible, et la cellule cible comprenant au moins l'un des éléments suivants : une première cellule correspondant à l'UE et une seconde cellule correspondant à l'UE.
PCT/CN2022/110033 2021-08-06 2022-08-03 Procédé et appareil de transfert de cellule, équipement utilisateur et support de stockage WO2023011545A1 (fr)

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