WO2024060164A1 - 通信方法和终端设备 - Google Patents
通信方法和终端设备 Download PDFInfo
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- WO2024060164A1 WO2024060164A1 PCT/CN2022/120694 CN2022120694W WO2024060164A1 WO 2024060164 A1 WO2024060164 A1 WO 2024060164A1 CN 2022120694 W CN2022120694 W CN 2022120694W WO 2024060164 A1 WO2024060164 A1 WO 2024060164A1
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- H—ELECTRICITY
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- H04L5/00—Arrangements affording multiple use of the transmission path
Definitions
- the present application relates to the field of communication, and more specifically, to a communication method and terminal equipment.
- User Equipment can be configured with multiple timing advance groups (Timing Advance Group, TAG) in a cell group (Cell Group, CG).
- TAG Timing Advance Group
- the UE's timing advance (Timing Advance, TAG) is based on TAG update and maintenance.
- each serving cell is associated with a TAG.
- each serving cell can be associated with multiple TAGs. If a serving cell is associated with two Primary Timing Advance Groups (PTAG), UE operations after the timer associated with the PTAG expires may cause service discontinuity.
- PTAG Primary Timing Advance Groups
- the embodiment of the present application provides a communication method, including:
- the terminal device determines the type of the timing advance group TAG based on the first method
- the terminal device performs the first behavior based on the type of the TAG and the timer associated with the TAG.
- An embodiment of the present application provides a terminal device, including:
- the processing unit is configured to determine the type of the timing advance group TAG based on the first method; and perform the first behavior based on the type of the TAG and the timer associated with the TAG.
- the embodiment of the present application provides a terminal device, including a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above communication method.
- An embodiment of the present application provides a chip for implementing the above communication method.
- the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned communication method.
- Embodiments of the present application provide a computer-readable storage medium for storing a computer program.
- the computer program When the computer program is run by a device, it causes the device to perform the above communication method.
- An embodiment of the present application provides a computer program product, which includes computer program instructions, and the computer program instructions cause the computer to execute the above communication method.
- An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to perform the above communication method.
- the terminal device can perform the first behavior based on the type of TAG and the timer associated with the TAG, which is beneficial to improving service continuity.
- Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.
- FIG2 is a schematic diagram of a differential adjustment format of TA.
- Figure 3 is a schematic diagram of the absolute value adjustment format of TA.
- Figure 4 is a schematic diagram of MAC RAR.
- Figure 5 is a schematic diagram of the uplink and downlink scheduling scenario of mDCI-mTRP.
- FIG6 is a schematic flowchart of a communication method according to an embodiment of the present application.
- Figure 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- Figure 8 is a schematic block diagram of a communication device according to an embodiment of the present application.
- Figure 9 is a schematic block diagram of a chip according to an embodiment of the present application.
- Figure 10 is a schematic block diagram of a communication system according to an embodiment of the present application.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- LTE-A Advanced long term evolution
- NR New Radio
- NTN Non-Terrestrial Networks
- UMTS Universal Mobile Telecommunication System
- WLAN Wireless Local Area Networks
- WiFi wireless fidelity
- 5G fifth-generation communication
- D2D Device to Device
- M2M Machine to Machine
- MTC Machine Type Communication
- V2V vehicle to vehicle
- V2X vehicle to everything
- the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA)Network scene.
- Carrier Aggregation, CA Carrier Aggregation, CA
- DC Dual Connectivity
- SA Standalone
- the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to licensed spectrum , among which, licensed spectrum can also be considered as non-shared spectrum.
- the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
- the terminal equipment may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote station, etc.
- Terminal mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
- the terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing unit.
- ST station
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).
- the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.
- VR virtual reality
- AR augmented reality
- the terminal device may also be a wearable device.
- Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
- a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
- wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
- the network device may be a device used to communicate with mobile devices.
- the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA.
- BTS Base Transceiver Station
- it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.
- AP Access Point
- BTS Base Transceiver Station
- NodeB, NB base station
- Evolutional Node B, eNB or eNodeB evolution base station
- gNB NR network network equipment
- the network device may have a mobile feature, for example, the network device may be a mobile device.
- the network device may be a satellite or a balloon station.
- the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc.
- the network device may also be a base station set up in a location such as land or water.
- network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
- the cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
- the small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
- Figure 1 illustrates a communication system 100.
- the communication system includes a network device 110 and two terminal devices 120.
- the communication system 100 may include multiple network devices 110 , and the coverage of each network device 110 may include other numbers of terminal devices 120 , which is not limited in this embodiment of the present application.
- the communication system 100 may also include other network entities such as Mobility Management Entity (MME), Access and Mobility Management Function (AMF), etc.
- MME Mobility Management Entity
- AMF Access and Mobility Management Function
- network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks used to communicate with access network equipment.
- the access network equipment can be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or authorized auxiliary access long-term evolution (LAA- Evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also known as "small base station"), pico base station, access point (access point, AP), Transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc.
- LTE long-term evolution
- NR next-generation
- LAA- Evolutionary base station evolutional node B, abbreviated as eNB or e-NodeB
- eNB next-generation
- NR next-generation
- LAA- Evolutionary base station evolutional node B, abbre
- the communication equipment may include network equipment and terminal equipment with communication functions.
- the network equipment and terminal equipment may be specific equipment in the embodiments of the present application, which will not be described again here; the communication equipment also It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.
- the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
- a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
- correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
- Timing advance (TA)
- UE user equipment
- TAG timing advance groups
- RRC radio resource control
- a CG can include multiple serving cells, and each serving cell will be assigned a timing advance group identity (TAG-Id).
- the UE's timing advance is based on the first symbol of the downlink channel or the time slot where the channel is located when the UE receives it as the downlink reference, and based on this, advance transmission is performed.
- each serving cell can be pre-configured with a timing advance offset (TA offset) n-TimingAdvanceOffset, which is N TA,offset in the formula.
- the TA adjustment amount (N TA ) is based on the pre-configured offset (offset).
- N TA can provide differential adjustment by the Media Access Control-Control Element (MAC CE) of the network (Network, NW). That is, this (new) TA adjustment is adjusted forward or backward in time based on the last (old) TA.
- NW Media Access Control-Control Element
- the first TA adjustment method can be a differential adjustment format of TA based on MAC CE, as shown in the following example. That is, TA is adjusted by A minimum time units based on the previous TA, and the granularity of the TA adjustment is TAG.
- TAG Identity (TAG ID): This field indicates the TAG identification of the TAG.
- the TAG identifier containing the special cell (Special Cell, SpCell) is 0.
- the length of this field is 2 bits (This field indicates the TAG Identity of the addressed TAG.
- the TAG containing the SpCell has the TAG Identity 0.
- the length of the field is 2 bits).
- SpCell can include a primary cell (Primary Cell, Pcell) and a primary secondary cell (Primary Secondary Cell, Pscell).
- Timing Advance Command This field indicates the index value TA (0,1,2...63), which is used to control the amount of timing adjustment that the Media Access Control (Media Access Control, MAC) entity must apply.
- the length of this field is 6 bits (Timing Advance Command: This field indicates the index value TA(0,1,2...63)used to control the amount of timing adjustment that MAC entity has to apply(as specified in TS 38.213[6 ]). The length of the field is 6 bits.).
- the second TA adjustment method may be to adjust the absolute value of TA. That is, there is no need to consider the previous TA value.
- the acquisition method of these two types of TA occurs during the random access process.
- the acquired TA is suitable for the TAG corresponding to the target cell of random access, so there is no need to include the TAG-ID.
- the Absolute MAC CE is used for the two-step random access process, and the two-step random access can only be initiated to SpCell, so the MAC CE is applicable to the Primary Timing Advance Group (PTAG) corresponding to the MAC entity. , that is, the PTAG contains SpCell.
- PTAG Primary Timing Advance Group
- Timing Advance Command (Timing Advance Command): This field indicates the index value TA used to control the timing adjustment amount that the MAC entity must apply. The size of this field is 12 bits (This field indicates the index value TA used to control the amount of timing adjustment that the MAC entity has to apply in TS 38.213[6]. The size of the field is 12 bits).
- R Reserved bit, set to "0".
- TA validity maintenance is implemented based on the TA timer.
- the UE receives the MAC CE or RAR including the above TA command (command)
- the UE will start or restart the timer.
- the timer times out, the UE will perform actions such as resource release and cache clearing.
- multiple TRP-based uplink physical uplink control channel (PUCCH)/physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) repeated transmission (repetition) is supported.
- the purpose is to enhance uplink coverage and Transmission reliability.
- the UE needs to send PUCCH/PUSCH carrying the same content to different TRPs.
- multi-PUSCH multi-physical uplink shared channel
- sDCI single downlink control information
- TA timing advance
- mDCI multiple downlink control information
- 3GPP is formulating a mechanism for multiple antenna panels of the UE to transmit PUCCH/PUSCH to multiple TRPs at the same time.
- the UE can only use one TA for early transmission within a carrier unit (Component Carrier, CC).
- CC Component Carrier
- each TRP can schedule its physical downlink shared channel (Downlink Control Information, DCI) through its own downlink control information (DCI). Physical Downlink Shared Channel, PDSCH) transmission.
- DCI Downlink Control Information
- PDSCH Physical Downlink Shared Channel
- Each TRP may also (not currently supported) schedule its own PUSCH transmission (see the arrows for PUSCH1 and PUSCH2 in Figure 5).
- TRP 1 and TRP 2 can use the same physical cell identifier (Physical Cell Identifier, PCI).
- CORESETs are grouped by their RRC parameter CORESET pool index (PoolIndex). For example, CORESETs with CORESETPoolIndex of "0" are grouped into one group, corresponding to one TRP. CORESETs with CORESETPoolIndex of "1" are grouped into one group, corresponding to another TRP.
- the NW does not configure CORESETPoolIndex for a CORESET, its default value is "0".
- TRP 1 in Figure 5 can be understood as the reference TRP, that is, the TRP that the UE accesses when it initially accesses.
- the UE has achieved uplink and downlink synchronization, and TRP 1 has a dedicated PCI#1.
- TRP 1 has a dedicated PCI#1.
- the NW can select one TRP from up to seven TRPs to serve the UE, these TRPs have different PCIs from the reference TRP, and uplink and downlink synchronization with the UE is often not established in advance.
- the TA of the UE is updated and maintained based on TAG, and each serving cell is associated with a TAG.
- RAN1 agreed to support the TRP-based TA (per TRP TA) indication scheme. That is to say, in the mTRP scenario, two TRPs of a serving cell can have different TAs, and the TAs of the two TRPs are associated with different TAGs. In other words, each serving cell can be associated with two TAGs.
- TAGs can be divided into PTAG and STAG.
- the TAG to which Pcell/Pscell belongs is PTAG
- the TAG to which Secondary Cell (Secondary Cell, Scell) belongs is STAG. So if each serving cell is associated with two TAGs in the mTRP scenario, the current PTAG/STAG may cause two PTAGs on one serving cell.
- the UE will release the uplink resources of all serving cells and clear the corresponding Hybrid Automatic Repeat ReQuest (HARQ) cache (buffer).
- HARQ Hybrid Automatic Repeat ReQuest
- the communication method provided by the embodiment of this application can provide a new way to determine the TAG, so that the UE can better maintain the TA, thereby ensuring the continuity of uplink services.
- Figure 6 is a schematic flowchart of a communication method 600 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
- the terminal device determines the type of timing advance group TAG based on the first method
- S620 The terminal device performs the first behavior based on the type of the TAG and the timer associated with the TAG.
- the types of TAG may include multiple types, for example, PTAG or STAG.
- a cell group (CG) and/or a media access control MAC entity can be associated with one or more primary timing advance groups (PTAG), which are introduced separately below.
- PTAG primary timing advance groups
- the first method when a CG and/or a MAC entity is associated with a PTAG, the first method includes at least one of the following:
- the TAG associated with the initially accessed cell and/or transmission reception point TRP on Pcell and/or Pscell is the first TAG
- the TAG associated with the TRP associated with control resource set 0 (CORESET 0) on Pcell and/or Pscell is the first TAG;
- the TAG associated with the TRP that receives the public channel on the Pcell and/or Pscell is the first TAG
- the TAG associated with the first control resource set index on Pcell and/or Pscell is the first TAG, and the TAG associated with the second control resource set index is the second TAG;
- the TAG associated with the TRP whose TCI status is associated with the beam information of the serving cell on Pcell and/or Pscell is the first TAG
- the cell and/or the TAG associated with the TRP that initiates the random access process for the first time is the first TAG;
- the TAG associated with Pcell and/or Pscell is the first TAG
- the TAG other than the first TAG is the second TAG.
- the beam information of the serving cell associated with the TCI status of the TRP may include serving cell synchronization signal block (Synchronization Signal and PBCH Block, SSB) and/or channel state information-reference signal (Channel State Information-Reference Signal) ,CSI-RS).
- serving cell synchronization signal block Synchronization Signal and PBCH Block, SSB
- channel state information-reference signal Channel State Information-Reference Signal
- the first method when one CG and/or one MAC entity is associated with two PTAGs, the first method includes at least one of the following:
- the TAG associated with Pcell and/or Pscell is the first TAG
- the TAG associated with Scell is the second TAG.
- the first TAG may be PTAG
- the second TAG may be STAG
- the first method when a TAG includes at least one sub-TAG, the first method includes at least one of the following:
- the sub-TAGs included in each PTAG and/or auxiliary timing advance group STAG respectively are the third TAG and the fourth TAG;
- the third TAG is associated with the first TRP, and the fourth TAG is associated with the second TRP.
- the first behavior corresponding to the third TAG can refer to the first behavior corresponding to the first TAG, that is, the PTAG.
- the first behavior corresponding to the four TAGs can refer to the first behavior corresponding to the second TAG, that is, the STAG.
- the first behavior corresponding to the third TAG can refer to the first behavior corresponding to the first TAG, that is, the PTAG.
- the first behavior corresponding to the fourth TAG can refer to the first behavior corresponding to the second TAG, that is, STAG.
- the identification of the TRP includes at least one of the following:
- Upstream channel and/or reference signals for semi-static upstream channels are upstream channel and/or reference signals for semi-static upstream channels
- Uplink channels and/or reference signals for semi-static reference signals are uplink channels and/or reference signals for semi-static reference signals
- the identifier of the TRP and the identifier of the TAG may have an associated relationship.
- the first behavior when the timer associated with the first TAG times out, the first behavior includes at least one of the following:
- Trigger random access process recovery timing to advance TA Trigger random access process recovery timing to advance TA
- the cell associated with the first TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the first TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the first TAG. For example, if two TRPs can work on a Pcell associated with the first TAG, after the TAG timers associated with the two TRPs have expired, the UE will perform the first behavior except inaction.
- the first TAG can be associated with at least one Scell. If two TRPs can work on a certain Scell associated with the first TAG, after the TAG timers associated with the two TRPs have expired, the UE will perform no action except first act outside of.
- the corresponding behavior performed when all TAG timers have timed out may be at least one behavior in the first behavior except no action. For example, after all TAG timers have expired, resources of the current serving cell are released, resources associated with the first TAG are released, etc.
- the resources of the serving cell may include, for example, HARQ buffer, SRS, PUCCH, SPS, CG, etc.
- the first behavior may include at least one of the following:
- Trigger random access process to restore TA Trigger random access process to restore TA
- the first behavior may include at least one of the following:
- Trigger random access process to restore TA Trigger random access process to restore TA
- the serving cell of the terminal device may be different. For example, if the first TAG is associated with Pcell or Pscell, because Pcell or Pscell is the primary serving cell, when the TAG timers expire, the terminal device can release resources of all serving cells. For another example, if the first TAG is associated with an Scell, the invalidation of the TA of one Scell does not affect the normal transmission of other Pcells or Scells. Therefore, when the TAG timers expire, the terminal device can release the resources of the current serving cell.
- the first behavior when the timer associated with the second TAG times out, the first behavior includes at least one of the following:
- the cell associated with the second TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the second TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the second TAG.
- the first behavior may include at least one of the following:
- Trigger random access process to restore TA Trigger random access process to restore TA
- the first behavior may include at least one of the following:
- Trigger random access process to restore TA Trigger random access process to restore TA
- the first behavior when the timer associated with the third TAG times out, includes at least one of the following:
- Trigger random access process recovery timing to advance TA Trigger random access process recovery timing to advance TA
- the cell associated with the third TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the third TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the third TAG.
- the third TAG is similar to the first TAG. For specific examples, see the relevant description of the first TAG.
- the first behavior when the timer associated with the fourth TAG times out, includes at least one of the following:
- the corresponding action is performed when all TAG timers associated with the cell associated with the fourth TAG have expired; wherein the cell associated with the fourth TAG can be at least one of Pcell, Pscell, and Scell;
- the cell associated with the fourth TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the fourth TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the fourth TAG.
- the fourth TAG is similar to the second TAG. For specific examples, please refer to the relevant description of the second TAG.
- the first behavior when the timer associated with the TAG times out, the first behavior further includes: sending a TA recovery request.
- the TAG that sends the TA recovery request based on timer expiration may be any one of the above-mentioned first TAG, second TAG, third TAG, and fourth TAG.
- the method of sending the TA recovery request includes at least one of the following:
- the TA recovery request can be carried through MAC CE.
- the MAC CE carries at least one of the following:
- L1-RSRP Layer 1-Reference Signal Receiving Power
- the MAC CE for the first TAG or the third TAG, the MAC CE carries the downlink DL timing information of the first TRP measured by the terminal device.
- the MAC CE For the second TAG or the fourth TAG, the MAC CE carries the downlink DL timing information of the second TRP measured by the terminal device, or the downlink timing difference between the first TRP and the second TRP.
- the resources used by the MAC CE include at least one of the following: resources dynamically scheduled by the physical downlink control channel PDCCH; CG resources; resources indicated in the random access response RAR.
- the SR is configured per TRP and/or per TAG.
- SR can be configured per TRP. Different TRPs correspond to different SRs.
- TA recovery requests can be reported through SR. If the TA timer of the TAG times out, the UE triggers the SR report corresponding to the TAG.
- the TAG and/or the SR of the TRP is associated with the physical uplink control channel PUCCH resource of the TRP.
- the TAG and/or the SR of the TRP is associated with the PUCCH resource of another TRP on the serving cell.
- the random access process is initiated based on the TA's invalid TAG and the random access (RA) resources associated with the TAG and/or the TRP.
- RA random access
- the TA is restored through a random access process triggered by the terminal device.
- the first TRP is associated with the first TAG or the third TAG
- the second TRP is associated with the second TAG or the fourth TAG.
- the first TRP may be the primary TRP and the second TRP may be the secondary TRP.
- the first TRP can be used to receive the public channel and monitor CORESET 0.
- the first TRP can also be the TRP that the UE accesses when it initially accesses, the TRP that initiates the random access process for the first time, etc.
- the second TRP may be used to receive and/or transmit UE-specific channels.
- the random access resource configuration method includes at least one of the following:
- Method 1 For all or part of the ROs in the random access opportunity (RACH Occasion, RO) set, the preambles associated with each RO are divided into a first preamble set and a second preamble set.
- the first preamble set is associated with the first TAG, and the first preamble set is used by the terminal device to select a preamble in the first preamble set to initiate a random access process to the TRP associated with the first TAG when the TA of the first TAG is invalid.
- the second preamble set is associated with the second TAG, and the second preamble set is used by the terminal device to select a preamble in the second preamble set to initiate a random access process to the TRP associated with the second TAG when the TA of the second TAG is invalid.
- Each TRP is configured with a different set of RO resources.
- the first RO set is used by the terminal device to initiate a random access process to the TRP associated with the first TAG.
- the second RO set is used by the terminal device to initiate a random access process to the TRP associated with the second TAG.
- Each TRP is configured with different SSB and/or CSI-RS sets.
- the RO and preamble resources associated with the first SSB and/or the first CSI-RS are used by the terminal device to initiate a random access process to the TRP associated with the first TAG.
- the RO and preamble resources associated with the second SSB and/or the second CSI-RS are used by the terminal device to initiate a random access process to the TRP associated with the second TAG.
- Each TRP is configured with different random access related configurations, which include RACH common configuration, RACH exclusive configuration and RACH general configuration.
- the triggering method for the terminal device to initiate a random access process to the TRP includes:
- the terminal device initiates a contention-based random access process to the associated TRP based on the random access resources associated with the TRP;
- the terminal device receives instruction information from the network side, and the instruction information instructs the terminal device to initiate non-contention-based random access resources to the target TRP.
- the terminal device initiates a contention-based random access process to the associated TRP based on the random access resource associated with the first TRP. If it is for the second TAG or the fourth TAG, the terminal device initiates a contention-based random access process to the associated TRP based on the random access resource associated with the second TRP.
- the target TRP may be the first TRP or the second TRP.
- the indication information is carried by DCI or MAC CE.
- the indication information includes at least one of the following:
- Control resource collection pool index (CORESETPoolIndex);
- TAG ID TAG ID
- Synchronous resource block index (SSB index);
- PRACH mask index PRACH mask index
- control resource collection pool index TCI status
- spatial relationship information TAG identification and PCI
- target TRP information TCI status
- the terminal device can perform the first behavior based on the type of TAG and the timer associated with the TAG, which is beneficial to improving the continuity of services, such as uplink services.
- an example of a TAG determination method in an mTRP multi-TA scenario is as follows. It can be applicable to different cell (inter-cell) mTRP scenarios and the same cell (intra-cell) mTRP scenarios.
- Option 1 Single (Single) PTAG (a CG/MAC entity is only associated with one PTAG).
- the method/condition for the UE to determine whether the TAG is a PTAG (first TAG) or STAG (second TAG) includes at least one of the following:
- the TAG associated with the initially accessed cell/TRP on Pcell/Pscell is the first TAG
- the TAG associated (also called corresponding) with the TRP associated with CORESET0 on Pcell/Pscell is the first TAG
- the TRP receiving the common channel on Pcell/Pscell is the first TAG
- CORESETPoolIndex 0 on Pcell/Pscell corresponds to the first TAG
- CORESETPoolIndex 1 corresponds to the second TAG, or vice versa
- CORESETPoolIndex 1 corresponds to the first TAG
- CORESETPoolIndex 0 corresponds to the second TAG
- e.TCI state (state) is associated with the TAG associated with the TRP of the serving cell synchronization signal block/channel state information-reference signal (Synchronization Signal and PBCH Block/Channel State Information-Reference Signal, SSB/CSI-RS) as the first TAG. ;
- the TAG associated with the cell/TRP that initiates the random access process for the first time is the first TAG;
- Option 2 Dual (Dual) PTAG (one CG/MAC entity is associated with two PTAGs):
- the TAG associated with Pcell/Pscell is the first TAG
- TAGs associated with Scell are the second TAG.
- each TAG further includes at least one sub-TAG:
- the third TAG is associated with the first TRP, and the fourth TAG is associated with the second TRP.
- the TRP may be identified and/or distinguished by at least one of the following means:
- TCI status/spatial relation information such as TCI status list (list), spatial relation list (spatial relation list).
- DL Downlink
- RS Reference Signal
- RSs may include: primary CSI PUCCH (Primary CSI PUCCH, P CSI PUCCH), primary SRS (Primary SRS, P SRS), and CG PUSCH.
- TAG logo e.TAG logo, TAG logo and TRP logo are related.
- the UE maintains the TA timer of the TAG. If the TA timer times out, the UE's behavior includes but is not limited to at least one of the following:
- the UE sends a TA recovery request after the TA timer associated with the second TAG times out, thereby restoring the TA and ensuring synchronization with the network side.
- the specific method of sending the TA recovery request may include at least one of the following:
- the TA recovery request can pass through the MAC CE, which carries the TAG/TRP ID, and optionally can also carry the DL timing information of the TRP measured by the UE.
- the resources that the MAC CE can use include PDCCH dynamically scheduled resources, or CG resources, or resources indicated in the RAR.
- the TA recovery request can also be reported through SR. If the TA timer of the TAG times out, the UE triggers an SR report.
- the SR is per TRP or per TAG configuration.
- the SR of the TAG/TRP can be associated with the PUCCH resource of another TRP on the serving cell, or the PUCCH resource of the TRP.
- (4-3) Initiate a random access process: for example, initiate a random access process based on the TA's invalid TAG and the random access resources associated with the TAG/TRP.
- the network can only configure random access resources associated with the first TRP. That is to say, only if the TA associated with the first TRP/TAG is invalid, it can be restored through the RACH process triggered by the UE autonomously.
- Other TRP/TAG can only be recovered by the random access process triggered by the network, or through MAC CE or SR.
- the RACH resource configuration method further includes at least one of the following:
- preamble set #1 is associated with the first TAG.
- Preamble set #2 is associated with the second TAG. If the TA of the second TAG is invalid, the UE selects the preamble in preamble set #2 to initiate a random access process to the TRP corresponding to the second TAG.
- the network configures different RO resource sets for each TRP. For example, a first RO set and a second RO set.
- the first RO set is used for the UE to initiate a random access process to the TRP corresponding to the first TAG.
- the second RO set is used for the UE to initiate a random access process to the TRP corresponding to the second TAG.
- the network configures different SSB/CSI-RS sets for each TRP. For example, a first SSB/CSI-RS set and a second SSB/CSI-RS set.
- the RO and preamble (preamble resource) associated with the first SSB/CSI-RS set are used by the UE to initiate a random access process to the TRP corresponding to the first TAG.
- the RO and preamble resources associated with the second SSB/CSI-RS set are used by the UE to initiate a random access process to the TRP corresponding to the second TAG.
- the network configures different random access related configurations for each TRP, including at least one of RACH-common configuration (ConfigCommon), RACH-dedicated configuration (ConfigDedicated) and RACH-general configuration (ConfigGeneric).
- RACH-common configuration ConfigCommon
- RACH-dedicated configuration ConfigDedicated
- RACH-general configuration ConfigGeneric
- the triggering method for UE to initiate random access to TRP includes at least one of the following:
- the UE initiates a contention-based random access process to the corresponding TRP based on the random access resources associated with the TRP;
- the UE receives indication information from the network side, which instructs the UE to initiate non-contention-based random access resources to the target TRP.
- the indication information is carried by DCI or MAC CE, and the indication information includes at least one of the following: target TRP information, SSB index, preamble index (preamble index), and RO mask (mask).
- the target TRP information may include: at least one of control resource set pool index (CORESETPoolIndex), TCI state (TCI-state), spatial relationship information, TAG ID, and PCI.
- Example 1 There is only one PTAG within a CG
- the serving cell For a serving cell, if the serving cell is Pcell or Pscell, and the serving cell is associated with two TAGs, then the TAG corresponding to the first TRP is PTAG, and the TAG corresponding to the second TRP is STAG; if the serving cell is Scell, Then at least one TAG associated with the cell is STAG.
- a serving cell associated with two TAGs indicates that the serving cell is configured with mTRP.
- Different TRPs can be in the same cell (intra-cell mTRP) or in different cells (inter-cell mTRP).
- the TAG is associated with a TRP in the serving cell, where the TRP is represented by but not limited to different reference signal sets, (such as TCI state, spatial relation, SSB, CSI-RS, SRS resources, main link ( Primary Link, PL)RS, etc.), or different control resource pool indexes (coresetpool index), or different uplink resources (such as DG, CG, PUCCH, etc.).
- the UE maintains the TA timer for each TRP/TAG, including when the UE receives the TA information of the TRP/TAG (TA command MAC CE or RAR or Absolute TAC MAC CE), the UE starts/restarts the TA timer. During the timer running Within, the UE considers the TA of the TRP/TAG to be valid; if the TA timer times out, the UE performs timeout behavior and/or reports to the network side.
- TA command MAC CE or RAR or Absolute TAC MAC CE TA command MAC CE or RAR or Absolute TAC MAC CE
- TRP/TAG is a TAG on Pcell or Pscell
- the UE performs the first behavior. For details, see the following options:
- Option 1 If the TA timer of another TRP/TAG associated with the serving cell is still running, the UE does not perform any operation. In other words, the UE will perform the first behavior only when the TA timers of the two TRP/TAGs associated with the serving cell have expired.
- Option 2 The UE performs the first behavior only based on whether the TAG associated with the current TA timer is the first TAG.
- the first behavior may include at least one of the following:
- the timer of the second TAG on the Pcell times out. If the timer of the first TAG is still running, the UE can transmit with the network side based on the first TRP. The optional UE can trigger a random access procedure to restore the TA of the second TAG.
- the UE When the timer of the first TAG on the Pcell times out, the UE considers that all TA timers have timed out and releases related resources on all serving cells. Specifically, it may include at least one of the following:
- Example 1-3 Based on Example 1-1, if the timer of the first TAG is still running, the UE may choose to only perform related resource release on the second TRP associated with the second TAG.
- the behavior performed by the UE specifically includes at least one of the following:
- Example 2 A CG/MAC entity is associated with two PTAGs
- both TAGs are PTAGs. If the serving cell is Scell, then at least one TAG associated with the cell is STAG.
- the behavior after the TA timer times out may include:
- timeAlignmentTimer is associated with the PTAG (if the timeAlignmentTimer is associated with the PTAG:):
- notify RRC to release PUCCH (notify RRC to release PUCCH, if configured;);
- the UE may determine the timeout behavior based on whether there are other TRP/TAG associated TA timers running on the cell associated with the TAG.
- the UE can transmit to the network side based on the first TRP associated with the first PTAG.
- the UE can trigger a random access procedure to recover the TA of the first TAG.
- the UE behavior can be similar to Example 1:
- Example 3 A TAG includes two sub-TAGs
- the UE For each serving cell, the UE considers that the TAG associated with Pcell/Pscell is PTAG, and the TAG associated with Scell is STAG. Further, the third TAG and the fourth TAG are further distinguished under each PTAG/STAG, where the third TAG is associated with the first TRP, and the fourth TAG is associated with the second TRP.
- the TA timer is maintained based on each sub-TAG (sub-TAG).
- sub-TAG sub-TAG
- a TAG determination method can be provided, so that the UE can clarify the TAG maintenance method and the corresponding TA timer expiration behavior in the mTRP scenario. In turn, it is conducive to maintaining the continuity of upstream business.
- FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application.
- the terminal device 700 may include:
- the processing unit 710 is configured to determine the type of TAG based on the first method; and perform the first behavior based on the type of the TAG and the timer associated with the TAG.
- the first method when a CG and/or a MAC entity is associated with a PTAG, the first method includes at least one of the following:
- the initially accessed cell and/or the TAG associated with the TRP is the first TAG
- the TAG associated with the TRP associated with control resource set 0 is the first TAG
- the TAG associated with the TRP receiving the public channel is the first TAG
- the TAG associated with the first control resource set index is the first TAG
- the TAG associated with the second control resource set index is the second TAG
- the TAG associated with the TRP whose TCI status is associated with the beam information of the serving cell is the first TAG
- the TAG associated with the cell and/or TRP that initiates the random access process for the first time is the first TAG;
- the TAG associated with the Pcell and/or Pscell is the first TAG
- the TAG other than the first TAG is the second TAG.
- the first method when one CG and/or one MAC entity is associated with two PTAGs, the first method includes at least one of the following:
- the TAG associated with Pcell and/or Pscell is the first TAG
- the TAG associated with Scell is the second TAG.
- the first manner includes at least one of the following:
- the sub-TAGs included in each PTAG and/or STAG are the first TAG and the second TAG respectively;
- the first TAG is associated with a first TRP
- the second TAG is associated with a second TRP.
- the identification of the TRP includes at least one of the following:
- Upstream channel and/or reference signals for semi-static upstream channels are upstream channel and/or reference signals for semi-static upstream channels
- Uplink channels and/or reference signals for semi-static reference signals are uplink channels and/or reference signals for semi-static reference signals
- the first behavior when the timer associated with the first TAG times out, the first behavior includes at least one of the following:
- Trigger random access process recovery timing to advance TA Trigger random access process recovery timing to advance TA
- the cell associated with the first TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the first TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the first TAG.
- the first behavior when the timer associated with the second TAG times out, the first behavior includes at least one of the following:
- the cell associated with the second TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the second TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the second TAG.
- the first behavior when the timer associated with the third TAG times out, includes at least one of the following:
- the cell associated with the third TAG may be a Pcell, a Pscell or a Scell. All TAG timers associated with the cell associated with the third TAG may include TAG timers associated with all TRPs on a Pcell, a Psell or a Scell associated with the third TAG.
- the first behavior when the timer associated with the fourth TAG times out, includes at least one of the following:
- the cell associated with the fourth TAG may be a Pcell, a Pscell or an Scell. All TAG timers associated with the cell associated with the fourth TAG may include TAG timers associated with all TRPs on a Pcell, a Psell, or an Scell associated with the fourth TAG.
- the first behavior when the timer associated with the TAG times out, the first behavior further includes: sending a TA recovery request.
- the method of sending the TA recovery request includes at least one of the following:
- the MAC CE carries at least one of the following:
- the resources used by the MAC CE include at least one of the following: PDCCH dynamically scheduled resources; CG resources; resources indicated in the RAR.
- the SR is configured per TRP and/or per TAG.
- the TAG and/or the SR of the TRP are associated with the PUCCH resources of the TRP; or
- the TAG and/or the SR of the TRP are associated with the PUCCH resources of another TRP on the serving cell.
- the random access process is initiated based on the TA's invalid TAG and the random access resources associated with the TAG and/or the TRP.
- the TA when a TA associated with at least one of the first TRP, the first TAG, or the third TAG is invalid, the TA is recovered through a random access process triggered by the terminal device.
- the triggering method for the terminal device to initiate a random access process to the TRP includes:
- the terminal device initiates a contention-based random access process to the associated TRP based on the random access resources associated with the TRP;
- the terminal device receives instruction information from the network side, and the instruction information instructs the terminal device to initiate non-contention-based random access resources to the target TRP.
- the indication information is carried by DCI or media access control control element MAC CE.
- the indication information includes at least one of the following:
- PRACH mask index Physical random access channel mask index
- the terminal device 700 in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method 600 embodiment.
- each module (sub-module, unit or component, etc.) in the terminal device 700 please refer to the corresponding description in the above method embodiment, and will not be described again here.
- the functions described for each module (sub-module, unit or component, etc.) in the terminal device 700 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. Module (submodule, unit or component, etc.) implementation.
- Fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.
- the communication device 800 includes a processor 810, and the processor 810 can call and run a computer program from a memory to enable the communication device 800 to implement the method in the embodiment of the present application.
- communication device 800 may also include memory 820.
- the processor 810 can call and run the computer program from the memory 820, so that the communication device 800 implements the method in the embodiment of the present application.
- the memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .
- the communication device 800 may also include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices. Specifically, the communication device 800 may send information or data to other devices, or receive information sent by other devices. information or data.
- the transceiver 830 may include a transmitter and a receiver.
- the transceiver 830 may further include an antenna, and the number of antennas may be one or more.
- the communication device 800 can be a network device according to the embodiment of the present application, and the communication device 800 can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, these processes are not mentioned here. Again.
- the communication device 800 may be a terminal device of an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.
- FIG. 9 is a schematic structural diagram of a chip 900 according to an embodiment of the present application.
- the chip 900 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
- the chip 900 may further include a memory 920.
- the processor 910 may call and run a computer program from the memory 920 to implement the method executed by the terminal device or the network device in the embodiment of the present application.
- the memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .
- the chip 900 may also include an input interface 930 .
- the processor 910 can control the input interface 930 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
- the chip 900 may also include an output interface 940.
- the processor 910 can control the output interface 940 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
- the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.
- the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .
- the chips used in network equipment and terminal equipment can be the same chip or different chips.
- chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
- the processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
- DSP digital signal processor
- FPGA off-the-shelf programmable gate array
- ASIC application specific integrated circuit
- the above-mentioned general processor may be a microprocessor or any conventional processor.
- non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
- non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
- Volatile memory can be random access memory (RAM).
- the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
- FIG. 10 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application.
- the communication system 1000 includes a terminal device 1010 and a network device 1020.
- the terminal device 1010 is configured to determine the type of TAG based on the first method; and perform the first behavior based on the type of the TAG and the timer associated with the TAG.
- the network device 1020 interacts with the terminal device and can send instruction information to the terminal device.
- the terminal device 1010 can be used to implement the corresponding functions implemented by the terminal device in the above method
- the network device 1020 can be used to implement the corresponding functions implemented by the network device or the network side in the above method.
- the network device 1020 can be used to implement the corresponding functions implemented by the network device or the network side in the above method.
- the computer program product includes one or more computer instructions.
- the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
- the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
- the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.
- the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
- the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
- the implementation process constitutes any limitation.
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Abstract
本申请涉及一种通信方法和终端设备。该通信方法包括:终端设备基于第一方式确定定时提前组TAG的类型;该终端设备基于该TAG的类型和该TAG关联的定时器,执行第一行为。本申请实施例,终端设备可以基于TAG的类型和该TAG关联的定时器执行第一行为,有利于提高业务的连续性。
Description
本申请涉及通信领域,更具体地,涉及一种通信方法和终端设备。
用户设备(User Equipment,UE)在一个小区组(Cell Group,CG)中可以被配置多个定时提前组(Timing Advance Group,TAG)。UE的定时提前(Timing Advance,TAG)是基于TAG更新以及维护的。通常情况下,每个服务小区(serving cell)关联一个TAG。在一些场景中,每个服务小区可以关联多个TAG。如果一个服务小区关联两个主定时提前组(Primary Timing Advance Group,PTAG),PTAG关联的定时器超时后的UE操作可能导致业务不连续。
发明内容
本申请实施例提供一种通信方法,包括:
终端设备基于第一方式确定定时提前组TAG的类型;
该终端设备基于该TAG的类型和该TAG关联的定时器,执行第一行为。
本申请实施例提供一种终端设备,包括:
处理单元,用于基于第一方式确定定时提前组TAG的类型;基于该TAG的类型和该TAG关联的定时器,执行第一行为。
本申请实施例提供一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,以使该终端设备执行上述的通信方法。
本申请实施例提供一种芯片,用于实现上述的通信方法。具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行上述的通信方法。
本申请实施例提供一种计算机可读存储介质,用于存储计算机程序,当该计算机程序被设备运行时使得该设备执行上述的通信方法。
本申请实施例提供一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述的通信方法。
本申请实施例提供一种计算机程序,当其在计算机上运行时,使得计算机执行上述的通信方法。
本申请实施例,终端设备可以基于TAG的类型和该TAG关联的定时器执行第一行为,有利于提高业务的连续性。
图1是根据本申请实施例的应用场景的示意图。
图2是TA的差分调整格式的示意图。
图3是TA的绝对值调整格式的示意图。
图4是MAC RAR的示意图。
图5是mDCI-mTRP的上下行调度场景的示意图。
图6是根据本申请一实施例的通信方法的示意性流程图。
图7是根据本申请一实施例的终端设备的示意性框图。
图8是根据本申请实施例的通信设备示意性框图。
图9是根据本申请实施例的芯片的示意性框图。
图10是根据本申请实施例的通信系统的示意性框图。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新无线(New Radio,NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、非地面通信网络(Non-Terrestrial Networks,NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、第五代通信(5th-Generation,5G)系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(Device to Device,D2D)通信,机器到机器(Machine to Machine,M2M)通信,机器类型通信(Machine Type Communication,MTC),车辆间(Vehicle to Vehicle,V2V)通信,或车联网(Vehicle to everything,V2X)通信等,本申请实施例也可以应用于这些通信系统。
在一种实施方式中,本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation,CA)场景,也可以应用于双连接(Dual Connectivity,DC)场景,还可以应用于独立(Standalone,SA)布网场景。
在一种实施方式中,本申请实施例中的通信系统可以应用于非授权频谱,其中,非授权频谱也可以认为是共享频谱;或者,本申请实施例中的通信系统也可以应用于授权频谱,其中,授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例,其中,终端设备也可以称为用户设备(UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是WLAN中的站点(STAION,ST),可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。
在本申请实施例中,终端设备可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中,终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的 电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中,网络设备可以是用于与移动设备通信的设备,网络设备可以是WLAN中的接入点(Access Point,AP),GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定,在本申请实施例中,网络设备可以具有移动特性,例如网络设备可以为移动的设备。可选地,网络设备可以为卫星、气球站。例如,卫星可以为低地球轨道(low earth orbit,LEO)卫星、中地球轨道(medium earth orbit,MEO)卫星、地球同步轨道(geostationary earth orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等。可选地,网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中,网络设备可以为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
图1示例性地示出了一种通信系统100。该通信系统包括一个网络设备110和两个终端设备120。在一种实施方式中,该通信系统100可以包括多个网络设备110,并且每个网络设备110的覆盖范围内可以包括其它数量的终端设备120,本申请实施例对此不做限定。
在一种实施方式中,该通信系统100还可以包括移动性管理实体(Mobility Management Entity,MME)、接入与移动性管理功能(Access and Mobility Management Function,AMF)等其他网络实体,本申请实施例对此不作限定。
其中,网络设备又可以包括接入网设备和核心网设备。即无线通信系统还包括用于与接入网设备进行通信的多个核心网。接入网设备可以是长期演进(long-term evolution,LTE)系统、下一代(移动通信系统)(next radio,NR)系统或者授权辅助接入长期演进(authorized auxiliary access long-term evolution,LAA-LTE)系统中的演进型基站(evolutional node B,简称可以为eNB或e-NodeB)宏基站、微基站(也 称为“小基站”)、微微基站、接入站点(access point,AP)、传输站点(transmission point,TP)或新一代基站(new generation Node B,gNodeB)等。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统为例,通信设备可包括具有通信功能的网络设备和终端设备,网络设备和终端设备可以为本申请实施例中的具体设备,此处不再赘述;通信设备还可包括通信系统中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本申请的实施例中提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例的描述中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
为便于理解本申请实施例的技术方案,以下对本申请实施例的相关技术进行说明,以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。
一.定时提前(Timing advance,TA)
在当前的新无线(New Radio,NR)标准中,用户设备(UE)在一个小区组(CG)中可以被配置例如最多4个定时提前组(TAG)。TAG的无线资源控制(Radio Resource Control,RRC)配置可以参见如下示例。一般一个CG可以包括多个服务小区(serving cells),且每一个服务小区都会被分配一个定时提前组标识(Timing advance group identity,TAG-Id)。
TAG的RRC配置的示例:
UE的定时提前量的计算公式的示例如下。UE的定时提前是以UE收到下行信道或信道所在的时隙(slot)的第一个符号为下行参考,在此基础上进行提前发射。
(N
TA+N
TA,offset)*T
C
在一个CG中,每一个服务小区都可以预先配置一个定时提前偏移(TA offset)n-TimingAdvanceOffset,即公式中的N
TA,offset。其中TA调整量(N
TA)是在预先配置偏移(offset)的基础上进行的。T
C为NR 系统中的最小时间单位,T
C=1/(4096*480kHz)。N
TA可以由网络(Network,NW)的媒体接入控制控制元素(Media Access Control-Control Element,MAC CE)来提供差分式的调整。即本次(new)TA调整是在上次(old)TA基础上,在时间上向前或向后调整的,计算公式的示例如下:
第一种TA调整方式可以是基于MAC CE的TA的差分调整格式,示例如下。即在之前的TA基础上调整T
A个最小时间单位,且该TA调整的颗粒度为TAG。
如图2所示,TAG标识(TAG Identity,TAG ID):该字段指示所述TAG的TAG标识。包含特殊小区(special Cell,SpCell)的TAG标识为0。该字段的长度为2比特(This field indicates the TAG Identity of the addressed TAG.The TAG containing the SpCell has the TAG Identity 0.The length of the field is 2 bits)。其中,SpCell可以包括主小区(Primary Cell,Pcell)和主辅小区(Primary Secondary Cell,Pscell)。
定时提前命令(Timing Advance Command):该字段指示索引值TA(0,1,2…63),用于控制媒体接入控制(Media Access Control,MAC)实体必须应用的定时调整量。该字段的长度是6比特(Timing Advance Command:This field indicates the index value TA(0,1,2…63)used to control the amount of timing adjustment that MAC entity has to apply(as specified in TS 38.213[6]).The length of the field is 6 bits.)。
第二种TA调整方式可以是对TA的绝对值的调整。即不需要考虑之前的TA值,NW通过绝对MAC CE(Absolute MAC CE)(参见图3)或随机接入响应(Random Access Response,RAR)MAC负载(payload)(参见图4)直接给出一个绝对值N
TA。它的取值范围是0到3846,对TA的调整范围是N
TA=T
A*16*64*2
μ。这两类TA的获取方式发生在随机接入过程中,所获取的TA适用于随机接入的目标小区对应的TAG,因此不需要包含TAG-ID。例如,Absolute MAC CE用于两步随机接入过程,且两步随机接入只能向SpCell发起,因此该MAC CE适用于该MAC实体所对应的主定时提前组(Primary Timing Advance Group,PTAG),即该PTAG包含SpCell。
如图3所示,定时提前命令(Timing Advance Command):该字段指示用于控制MAC实体必须应用的定时调整量的索引值TA。该字段的大小为12比特(This field indicates the index value TA used to control the amount of timing adjustment that the MAC entity has to apply in TS 38.213[6].The size of the field is 12 bits)。
R:保留位,设置为“0”(R:Reserved bit,set to"0".)。
二.UE的TA的维护
TA有效性维护是依赖于TA定时器来实现的。当UE收到包括上述的TA命令(command)的MAC CE或者RAR后,UE会启动或者重启该定时器。当该定时器超时后,UE会执行资源释放、清空缓存等行为。
三.上行多传输接收点(Transmission Reception Point,TRP)操作
在3GPP中,支持基于多TRP的上行物理上行控制信道(Physical Uplink Control Channel,PUCCH)/物理上行共享信道(Physical Uplink Shared Channel,PUSCH)的重复传输(repetition),其目的是增强上行的覆盖和传输的可靠性。UE需要向不同的TRP发送承载相同内容的PUCCH/PUSCH。
对于PUSCH的repetition来说,支持基于单下行控制信息(Single Downlink Control Information,sDCI)的多物理上行共享信道(multi-PUSCH)重复传输,使用一个定时提前(Timing advance,TA)来顺序发送PUSCH到不同的TRP。对于基于多下行控制信息(Multiple Downlink Control Information,mDCI)的多PUSCH(multi-PUSCH)传输,由于多个TRP之间可能没有足够理想的回传(backhaul)作为连接,多个TRP对UE的独立调度有可能引起不同PUSCH/PUCCH在时间上的重叠,因此也需要针对不同的TRP来支持不同的TA更新或指示。
目前3GPP正在制定UE的多个天线面板同时向多个TRP传输PUCCH/PUSCH的机制。虽然在多上行发射天线面板和多TRP接收的配置下,UE在一个载波单元(Component Carrier,CC)内也仅能使用一个TA来做提前发送。这样的限制显然应该被打破,即支持特定TRP(TRP-specific)的TA更新/指示。
在小区内多传输接收点(Multiple Transmission Reception Point,mTRP)的场景下,如图5所示,每个TRP可以通过各自的下行控制信息(Downlink Control Information,DCI)来调度其物理下行共享信道(Physical Downlink Shared Channel,PDSCH)传输。每个TRP也可能(暂时没有支持)调度各自的PUSCH传输(参见图5中的PUSCH1和PUSCH2所在的箭头)。TRP 1和TRP 2可以使用相同的物理小区标识(Physical Cell Identifier,PCI)。
在mDCI-mTRP的操作中,相对于sDCI-mTRP的操作,对于DCI的需求量较大且各个TRP进行独立的调度,因此增加了DCI所在的占用控制资源集(Control Resource Sets,CORESETs)的数量。并且将CORESETs通过它的RRC参数CORESET池索引(PoolIndex)进行分组。例如,CORESETPoolIndex 为“0”的CORESETs分为一组,对应一个TRP。CORESETPoolIndex为“1”的CORESETs分为一组,对应另外一个TRP。当NW没有为CORESET配置CORESETPoolIndex的时候,其默认值为“0”。
而对于小区间(inter-cell)mTRP,图5中的TRP 1可以被理解为参考TRP,即UE初始接入时接入的TRP。UE已经取得了上下行同步,TRP 1有一个专属的PCI#1。而对于其他的TRP,由于NW可以从最多7个TRP中选择一个TRP来为UE进行服务,因此这些TRP具有与参考TRP不同的PCI,且往往未与UE提前建立上下行的同步。
相关技术中UE的TA是基于TAG更新以及维护的,每个服务小区(serving cell)关联一个TAG。在最新的无线接入网1(Radio Access Network 1,RAN1)会议上,RAN1同意支持基于TRP的TA(per TRP TA)的指示方案。也就是说,在mTRP场景中,一个服务小区的两个TRP可以有不同的TA,且两个TRP的TA关联不同的TAG。也就是说,每个服务小区可以关联两个TAG。
相关的TAG可以分为PTAG和STAG。在载波聚合/双连接(Carrier Aggregation/Dual Connectivity,CA/DC)场景下,Pcell/Pscell所属的TAG为PTAG,辅小区(Secondary Cell,Scell)所属的TAG为STAG。那么若mTRP场景中每个服务小区关联两个TAG,目前的PTAG/STAG可能会导致一个服务小区上有两个PTAG。相关技术中,PTAG关联的定时器超时后UE会将所有服务小区的上行资源都释放并进行相应的混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)缓存(buffer)清空。对于mTRP场景,若Pcell上还有另一个TRP可以工作,UE就没必要将所有资源释放。
本申请实施例提供的通信方法可以提供一种新的确定TAG的方式,使得UE可以更好的维护TA,从而保障上行业务的连续性。
图6是根据本申请一实施例的通信方法600的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S610、终端设备基于第一方式确定定时提前组TAG的类型;
S620、该终端设备基于该TAG的类型和该TAG关联的定时器,执行第一行为。
在本公开实施例中,TAG的类型可以包括多种,例如,PTAG或STAG。在多TRP场景中,确定出TAG是PTAG或STAG,能够针对不同类型的TAG执行相应的行为。例如,可以更加灵活地决定是否释放资源,从而有利于保证业务的连续性。
一个小区组(CG)和/或一个媒体接入控制MAC实体可以关联一个或多个主定时提前组(PTAG),下面分别进行介绍。
在一种实施方式中,在一个CG和/或一个MAC实体关联一个PTAG的情况下,该第一方式包括以下至少之一:
Pcell和/或Pscell上初始接入的小区和/或传输接收点TRP关联的TAG为第一TAG;
Pcell和/或Pscell上控制资源集0(CORESET 0)关联的TRP关联的TAG为第一TAG;
Pcell和/或Pscell上接收公共信道的TRP关联的TAG为第一TAG;
Pcell和/或Pscell上第一控制资源集索引关联的TAG为第一TAG,第二控制资源集索引关联的TAG为第二TAG;
Pcell和/或Pscell上传输配置指示(Transmission Configuration Indicator,TCI)TCI状态关联了服务小区的波束信息的TRP关联的TAG为第一TAG;
在辅小区组SCG添加(addition)/改变(change)过程中,初次发起随机接入过程的小区和/或TRP关联的TAG为第一TAG;
Pcell和/或Pscell关联的TAG为第一TAG;
除了该第一TAG之外的TAG为第二TAG。
在本申请实施例中,TRP的TCI状态关联的服务小区的波束信息可以包括服务小区同步信号块(Synchronization Signal and PBCH Block,SSB)和/或信道状态信息-参考信号(Channel State Information-Reference Signal,CSI-RS)。
在一种实施方式中,在一个CG和/或一个MAC实体关联两个PTAG的情况下,该第一方式包括以下至少之一:
Pcell和/或Pscell关联的TAG为第一TAG;
Scell关联的TAG为第二TAG。
在本申请实施例中,第一TAG可以为PTAG,第二TAG可以为STAG。
在一种实施方式中,在一个TAG包括至少一个子TAG的情况下,该第一方式包括以下至少之一:
每个PTAG和/或辅定时提前组STAG分别包括的子TAG为第三TAG和第四TAG;
该第三TAG关联第一TRP,该第四TAG关联第二TRP。
例如,如果某个PTAG为第一TAG,该第一TAG的子TAG包括第三TAG和第四TAG,则第三TAG对应的第一行为可以参考第一TAG即PTAG对应的第一行为,第四TAG对应的第一行为可以参考第二TAG即STAG对应的第一行为。
再如,如果某个STAG为第二TAG,该第二TAG的子TAG包括第三TAG和第四TAG,则第三TAG对应的第一行为可以参考第一TAG即PTAG对应的第一行为,第四TAG对应的第一行为可以参考第二TAG即STAG对应的第一行为。
在一种实施方式中,该TRP的标识包括以下至少之一:
TCI状态;
空间关系信息;
控制资源池索引;
下行参考信号组;
用于半静态上行通道的上行信道和/或参考信号;
用于半静态参考信号的上行信道和/或参考信号;
TAG的标识。
在本申请实施例中,TRP的标识与TAG的标识可以具有关联关系。
在一种实施方式中,在第一TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入流程恢复定时提前TA;
不动作,在该第一TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第一TAG关联的资源;
释放第一TRP关联的资源。
在本申请实施例中,该第一TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第一TAG关联的小区关联的所有TAG定时器可以包括第一TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。例如,如果第一TAG关联的一个Pcell上有两个TRP可以工作,在这两个TRP关联的TAG定时器都超时后,UE再执行除了不动作之外的第一行为。再如,第一TAG可以关联至少一个Scell,如果在第一TAG关联的某一个Scell上有两个TRP可以工作,在这两个TRP关联的TAG定时器都超时后,UE再执行除了不动作之外的第一行为。
在本申请实施例中,在终端设备不动作后,在所有TAG定时器都超时的情况下执行的相应行为可以是第一行为中除了不动作之外的至少一种行为。例如,所有TAG定时器都超时后释放当前服务小区的资源、释放第一TAG关联的资源等。服务小区的资源可以包括例如HARQ缓存(buffer)、SRS、PUCCH、SPS、CG等。
例如,如果第一TAG关联的定时器超时,并且,第一TAG关联Pcell和/或Pscell,则该第一行为可以包括以下至少之一:
释放所有服务小区关联的资源;
触发随机接入流程恢复TA;
不动作,在该Pcell和/或该Pscell上所有TRP关联的TAG定时器都超时的情况下执行相应行为;
释放第一TAG关联的资源;
释放第一TRP关联的资源。
再如,如果第一TAG关联的定时器超时,并且,第一TAG关联Scell,则该第一行为可以包括以下至少之一:
释放当前服务小区关联的资源;
触发随机接入流程恢复TA;
不动作,在该Scell上所有TRP关联的TAG定时器都超时的情况下执行相应行为;
释放第一TAG关联的资源;
释放第一TRP关联的资源。
在本申请实施例中,第一TAG关联Pcell或Pscell的情况,与第一TAG关联Scell的情况下,终端设备的服务小区可能不同。例如,如果第一TAG关联Pcell或Pscell,因为Pcell或Pscell是主服务小区,因此在TAG定时器都超时的情况下,终端设备可以释放所有服务小区的资源。再如,如果第一TAG 关联Scell,一个Scell的TA无效不影响其他Pcell或Scell的正常传输内,因此在TAG定时器都超时的情况下,终端设备可以释放当前服务小区的资源。
在一种实施方式中,在第二TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入过程恢复TA;
不动作,在该第二TAG关联的小区的所有TAG定时器都超时的情况下执行相应行为;
释放第二TAG关联的资源;
释放第二TRP关联的资源。
在本申请实施例中,该第二TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第二TAG关联的小区关联的所有TAG定时器可以包括第二TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。
例如,如果第二TAG关联的定时器超时,并且,第二TAG关联Pcell和/或Pscell,则该第一行为可以包括以下至少之一:
释放所有服务小区关联的资源;
触发随机接入流程恢复TA;
不动作,在该Pcell和/或该Pscell上所有TRP关联的TAG定时器都超时的情况下执行相应行为;
释放第一TAG关联的资源;
释放第一TRP关联的资源。
再如,如果第二TAG关联的定时器超时,并且,第二TAG关联Scell,则该第一行为可以包括以下至少之一:
释放当前服务小区关联的资源;
触发随机接入流程恢复TA;
不动作,在该Scell关联的所有TAG定时器都超时的情况下执行相应行为;
释放第二TAG关联的资源;
释放第二TRP关联的资源。
在一种实施方式中,在第三TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入流程恢复定时提前TA;
不动作,在该第三TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第三TAG关联的资源;
释放第三TRP关联的资源。
在本申请实施例中,该第三TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第三TAG关联的小区关联的所有TAG定时器可以包括第三TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。第三TAG与第一TAG是类似的,具体示例可以参见第一TAG的相关描述。
在一种实施方式中,在第四TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入过程恢复TA;
不动作,在该第四TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;其中,该第四TAG关联的小区可以为Pcell、Pscell、Scell的至少之一;
释放第四TAG关联的资源;
释放第四TRP关联的资源。
在本申请实施例中,该第四TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第四TAG关联的小区关联的所有TAG定时器可以包括第四TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。第四TAG与第二TAG是类似的,具体示例可以参见第二TAG的相关描述。
在一种实施方式中,在该TAG关联的定时器超时的情况下,该第一行为还包括:发送TA恢复请求。在本申请实施例中,基于定时器超时发送TA恢复请求的该TAG可以是上述的第一TAG、第二TAG、第三TAG、第四TAG中的任意一个。
在一种实施方式中,发送该TA恢复请求的方式包括以下至少之一:
MAC CE;
上行调度请求(Scheduling Request,SR);
随机接入过程。
例如,可以通过MAC CE携带TA恢复请求。
在一种实施方式中,该MAC CE中携带以下至少之一:
TAG标识;
TRP标识;
服务小区标识;
终端设备测量的TRP的下行DL定时信息;
层一参考信号接收功率(Lay 1-Reference Signal Receiving Power,L1-RSRP)测量结果。
在本申请实施例中,针对第一TAG或第三TAG,MAC CE中携带终端设备测量的第一TRP的下行DL定时信息。针对第二TAG或第四TAG,MAC CE中携带终端设备测量的第二TRP的下行DL定时信息,或者是第一TRP和第二TRP的下行定时差。
在一种实施方式中,该MAC CE使用的资源包括以下至少之一:物理下行控制信道PDCCH动态调度的资源;CG资源;随机接入响应RAR中指示的资源。
在一种实施方式中,该SR是针对每个TRP和/或每个TAG配置的。例如,SR可以按照每个TRP配置。不同的TRP对应的不同的SR。可以通过SR上报TA恢复请求。若TAG的TA定时器超时,UE触发该TAG对应的SR上报。
在一种实施方式中,该TAG和/或该TRP的SR关联该TRP的物理上行控制信道PUCCH资源。
在一种实施方式中,该TAG和/或该TRP的SR关联服务小区上另一个TRP的PUCCH资源。
在一种实施方式中,该随机接入过程是基于TA无效的TAG以及该TAG和/或该TRP关联的随机接入(RA)资源发起的。
在一种实施方式中,在第一TRP、第一TAG或第三TAG的至少之一关联的TA无效的情况下,该TA是通过终端设备触发的随机接入过程恢复的。在本申请实施例中,第一TRP与第一TAG或第三TAG关联,第二TRP与第二TAG或第四TAG关联。第一TRP可以是主TRP,第二TRP可以是辅TRP。例如,第一TRP可以用于接收公共信道、监听CORESET 0,第一TRP也可以是UE初始接入时接入的TRP、初次发起随机接入过程的TRP等。第二TRP可以用于接收和/或发送UE专属信道。
在一种实施方式中,对于配置了多传输接收点(mTRP)的终端设备,随机接入资源配置方式包括以下至少之一:
方式一:对于随机接入时机(RACH Occasion,RO)集合内的全部RO或部分RO,每个RO关联的前导码划分为第一前导码集合和第二前导码集合。其中,第一前导码集合与第一TAG关联,该第一前导码集合用于终端设备在第一TAG的TA无效的情况下选择该第一前导码集合中的前导码向第一TAG关联的TRP发起随机接入过程。第二前导码集合与第二TAG关联,该第二前导码集合用于终端设备在第二TAG的TA无效的情况下选择第二前导码集合中的前导码向第二TAG关联的TRP发起随机接入过程。
方式二:每个TRP配置有不同的RO资源集合。其中,第一RO集合用于终端设备向第一TAG关联的TRP发起随机接入过程。第二RO集合用于终端设备向第二TAG关联的TRP发起随机接入过程。
方式三:每个TRP配置有不同的SSB和/或CSI-RS集合。其中,第一SSB和/或第一CSI-RS关联的RO和前导码资源用于终端设备向第一TAG关联的TRP发起随机接入过程。第二SSB和/或第二CSI-RS关联的RO和前导码资源用于终端设备向第二TAG关联的TRP发起随机接入过程。
方式四:每个TRP配置有不同的随机接入相关配置,该随机接入相关配置包括RACH公共配置、RACH专属配置和RACH通用配置。
在一种实施方式中,该终端设备向TRP发起随机接入过程的触发方式包括:
该终端设备基于与TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程;
该终端设备接收网络侧的指示信息,该指示信息指示该终端设备向目标TRP发起基于非竞争的随机接入资源。
例如,如果是针对第一TAG或第三TAG,终端设备基于与第一TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程。如果是针对第二TAG或第四TAG,终端设备基于与第二TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程。
在本申请实施例中,目标TRP可以是第一TRP,也可以是第二TRP。
在一种实施方式中,该指示信息由DCI或MAC CE承载。
在一种实施方式中,该指示信息包括以下至少一种:
控制资源集合池索引(CORESETPoolIndex);
TCI状态(TCI-state);
空间关系(spatial relation)信息;
TAG标识(TAG ID);
PCI;
同步资源块索引(SSB index);
前导码索引(preamble index);
PRACH掩码索引(PRACH mask index)。
其中,控制资源集合池索引、TCI状态、空间关系信息、TAG标识和PCI可以称为目标TRP信息。
本申请实施例,终端设备可以基于TAG的类型和该TAG关联的定时器执行第一行为,有利于提高业务例如上行业务的连续性。
在一种具体的应用场景中,例如在mTRP多TA场景下TAG的确定方式的示例如下。可以适用于不同小区(inter-cell)mTRP场景以及相同小区(intra-cell)mTRP场景。
选项1(Option1):单(Single)PTAG(一个CG/MAC实体只关联一个PTAG)。具体的,UE判断该TAG为PTAG(第一TAG)或是STAG(第二TAG)的方式/条件包括以下至少之一:
a.Pcell/Pscell上初始接入的小区/TRP关联的TAG为第一TAG;
b.Pcell/Pscell上CORESET0关联的TRP关联(也可称为对应)的TAG为第一TAG;
c.Pcell/Pscell上接收公共信道(common channel)的TRP为第一TAG;
d.Pcell/Pscell上CORESETPoolIndex 0对应第一TAG,CORESETPoolIndex 1对应第二TAG,或者反之也可以为CORESETPoolIndex 1对应第一TAG,CORESETPoolIndex 0对应第二TAG;
e.TCI状态(state)关联了服务小区同步信号块/信道状态信息-参考信号(Synchronization Signal and PBCH Block/Channel State Information-Reference Signal,SSB/CSI-RS)的TRP关联的TAG为第一TAG;
f.在辅小区组(Secondary Cell Group,SCG)添加(addition)/改变(change)过程中,初次发起随机接入过程的小区/TRP关联的TAG为第一TAG;
g.除Pcell/Pscell关联的第一TAG外,其余全为第二TAG。
选项2(Option 2):双(Dual)PTAG(一个CG/MAC实体关联两个PTAG):
a.Pcell/Pscell关联的TAG为第一TAG;
b.其他关联了Scell的TAG为第二TAG。
选项3(Option 3):子TAG(sub-TAG)。例如,每个TAG(PTAG或STAG)进一步包括至少一个sub-TAG:
a.每个PTAG/STAG下区分第三TAG和第四TAG;
b.第三TAG关联第一TRP,第四TAG关联第二TRP。
根据选项1、选项2或选项3,TRP可以通过以下方式的至少之一标识和/或区分:
a.不同的TCI状态/空间关系(spatial relation)信息,比如TCI状态列表(list)、空间关系列表(spatial relation list)。
b.不同的CORESETPoolIndex。
c.不同的下行链路(DownLink,DL)参考信号(Reference Signal,RS)组(group)。对于UL传输,UE采用了与UL传输所属的DL RS组相关的TAG(For a UL transmission,UE adopts the TAG associated with the DL RS group to which the PL RS of the UL transmission belongs.)。
d.不同的上行链路信道(UL channels)、多个RS直接用于半静态上行链路信道(RSs directly for semi-static UL channels)、多个RS(RSs)或动态资源。其中,多个RS的示例可以包括:主CSI PUCCH(Primary CSI PUCCH,P CSI PUCCH)、主SRS(Primary SRS,P SRS)、CG PUSCH。
e.TAG标识,TAG标识和TRP标识具有关联关系。
进一步的,UE维护该TAG的TA定时器,若TA timer超时,UE的行为包括但不限于以下至少之一:
a.若第一TAG关联的TA定时器(timer)超时:
i.若第一TAG关联Pcell/Pscell:
(1)释放所有服务小区(serving CELL)关联的资源;或者,
(2)触发RACH恢复TA;或者,
(3)不动作,等Pcell/Pscell关联的所有定时器例如两个TAG timer都超时再执行相应行为。
ii.若第一TAG关联Scell:
(1)释放当前服务小区关联的资源;或者,
(2)不动作,等Scell关联的所有定时器都超时再执行相应行为;或者,
(3)释放第一TAG/TRP关联的资源。
b.若第二TAG的TA timer超时:
i.若第二TAG关联Pcell/Pscell:
(1)释放所有服务小区关联的资源;或者,
(2)触发随机接入信道(Random Access Channel,RACH)恢复TA;或者,
(3)不动作,等Pcell/Pscell关联的所有定时器都超时再执行相应行为;或者,
(4)释放第二TAG/第二TRP关联的资源。
ii.若第二TAG关联Scell:
(1)释放当前服务小区关联的资源;或者,
(2)不动作,等Scell关联的所有定时器都超时再执行相应行为;或者,
(3)释放第二TAG/第二TRP关联的资源;或者,
(4)可选的,UE在该第二TAG关联的TA timer超时后发送TA恢复请求,能够恢复TA,保证与网络侧的同步。
UE基于第三TAG关联的定时器的超时行为可以参见第一TAG的相关描述。UE基于第四TAG关联的定时器的超时行为可以参见第二TAG的相关描述。
进一步地,发送TA恢复请求的具体方式可以包括以下至少之一:
(4-1)基于MAC CE(MAC CE based):该TA恢复请求可以通过MAC CE,该MAC CE携带TAG/TRP ID,可选的还可以携带UE测量的该TRP的DL定时(timing)信息。该MAC CE可以使用的资源包括PDCCH动态调度的资源,或者CG资源,或者RAR中指示的资源
(4-2)SR:该TA恢复请求还可以通过SR上报。若该TAG的TA timer超时,UE触发SR上报,该SR是per TRP或per TAG配置。可选的,该TAG/TRP的SR可以关联该服务小区上另一个TRP的PUCCH资源,或者该TRP的PUCCH资源。
(4-3)发起随机接入过程:例如,基于TA无效的TAG以及该TAG/TRP关联的随机接入资源发起随机接入过程。可选的,网络可以只配置第一TRP关联的随机接入资源,也就是说只有第一TRP/TAG关联的TA无效才可以通过UE自主触发的RACH过程恢复。其他TRP/TAG只能网络触发的随机接入过程来恢复,或者可以通过MAC CE或者SR等方式。
(5)对于配置了mTRP的UE,RACH资源配置方式进一步包括以下至少之一:
(5-1)对于随机接入时机(RO)集合内的全部或部分RO,每个RO关联的前导码(preamble)进一步划分为preamble集合#1和preamble集合#2。其中,preamble集合#1与第一TAG关联,当第一TAG的TA无效时,UE选择preamble集合#1中的preamble向第一TAG对应的TRP发起随机接入过程。preamble集合#2与第二TAG关联,若第二TAG的TA无效,UE选择preamble集合#2中的preamble向第二TAG对应的TRP发起随机接入过程。
(5-2)网络为每个TRP配置不同的RO资源集合。例如,第一RO集合和第二RO集合。第一RO集合用于UE向第一TAG对应的TRP发起随机接入过程。第二RO集合用于UE向第二TAG对应的TRP发起随机接入过程。
(5-3)网络为每个TRP配置不同的SSB/CSI-RS集合。例如,第一SSB/CSI-RS集合和第二SSB/CSI-RS集合。第一SSB/CSI-RS集合关联的RO和前导码(preamble资源)用于UE向第一TAG对应的TRP发起随机接入过程。第二SSB/CSI-RS集合关联的RO和preamble资源用于UE向第二TAG对应的TRP发起随机接入过程。
(5-4)网络为每个TRP配置不同的随机接入相关配置,包括RACH-公共配置(ConfigCommon)、RACH-专用配置(ConfigDedicated)和RACH-通用配置(ConfigGeneric)的至少之一。
(6)UE向TRP发起随机接入的触发方式包括以下至少之一:
(6-1)UE基于与TRP关联的随机接入资源向对应的TRP发起基于竞争的随机接入过程;
(6-2)UE接收网络侧的指示信息,该指示信息指示UE向目标TRP发起基于非竞争的随机接入资源。该指示信息由DCI或MAC CE承载,该指示信息包括以下至少一种:目标TRP信息、SSB索引、前导码索引(preamble index)、RO掩码(mask)。例如,目标TRP信息可以包括:控制资源集池索引(CORESETPoolIndex)、TCI状态(TCI-state)、空间关系(spatial relation)信息、TAG ID、PCI的至少一种。
示例1:一个CG内只有一个PTAG
对于一个服务小区,若该服务小区为Pcell或Pscell,且该服务小区关联了两个TAG,那么第一TRP对应的TAG为PTAG,第二TRP对应的TAG为STAG;若该服务小区为Scell,那么该小区关联的至少一个TAG都为STAG。
一个服务小区关联两个TAG表示该服务小区配置了mTRP,其中不同的TRP可以是同小区(intra-cell mTRP)或不同小区(inter-cell mTRP)的。该TAG关联该服务小区中的一个TRP,其中TRP的表征方式包括但不限于不同的参考信号集合,(比如TCI state,spatial relation,SSB,CSI-RS,SRS资源(resource),主链路(Primary Link,PL)RS等),或者不同的控制资源集池索引(coresetpool index),或者不同的上行资源(例如DG、CG、PUCCH等)。
UE维护每个TRP/TAG的TA定时器,包括当UE收到该TRP/TAG的TA信息(TA command MAC CE或RAR或Absolute TAC MAC CE),UE启动/重启TA定时器,定时器运行期间内,UE认为该TRP/TAG的TA有效;若该TA定时器超时,UE执行超时行为和/或上报网络侧。
情况一:若该TRP/TAG是Pcell或Pscell上的TAG,UE执行第一行为,具体参见以下选项:
选项1(Option 1):若该服务小区关联的另一个TRP/TAG的TA定时器还在运行期间,UE不执行任何操作。或者说只有当该服务小区关联的两个TRP/TAG的TA定时器都超时,UE才执行第一行为。
选项2(Option 2):UE仅基于当前TA timer关联的TAG是否为第一TAG来执行第一行为。
示例性地,第一行为可以包括以下至少之一:
释放所有Serving Cell关联的资源;
触发RACH恢复TA;
不动作,等Pcell关联的两个TAG timer都超时再执行相应行为(除了不动作之外的其他第一行为);
释放第一TAG/TRP关联的资源。
例1-1:
Pcell上第二TAG的timer超时,若第一TAG的timer还在运行期间,那么UE可以基于第一TRP与网络侧进行传输。可选的UE可以触发随机接入流程来恢复第二TAG的TA。
例1-2:
Pcell上第一TAG的timer超时,则UE认为所有TA timer都超时,并释放所有服务小区上的相关资源,具体可以包括以下至少之一:
1.清空所有服务小区的所有HARQ缓存(flush all HARQ buffers for all Serving Cells);
2.如果配置了,通知RRC释放所有服务小区的PUCCH(notify RRC to release PUCCH for all Serving Cells,if configured);
3.如果配置了,通知RRC释放所有服务小区的SRS(notify RRC to release SRS for all Serving Cells,if configured);
4.清除任何配置的下行分配和配置的上行授权(clear any configured downlink assignments and configured uplink grants);
5.清除用于半静态的CSI报告的任何PUSCH资源(clear any PUSCH resource for semi-persistent CSI reporting);
6.将所有运行的定时器timeAlignmentTimers视为过期(consider all running timeAlignmentTimers as expired);
7.维护所有TAG的N
TA(maintain N
TA(defined in TS 38.211[8])of all TAGs)。
例1-3:基于例1-1,若第一TAG的定时器还是运行期间,UE可以选择只执行该第二TAG关联的第二TRP上的相关资源释放。
情况二:若该TRP/TAG是Scell上的TAG,UE执行的行为具体包括以下至少之一:
1.释放当前服务小区(即该Scell)关联的资源;或者,
2.不动作;或者,
3.释放该服务小区(Serving Cell)上相应TAG/TRP关联的资源。
示例2:一个CG/MAC实体关联两个PTAG
对于一个服务小区,若该服务小区为Pcell或Pscell,且该服务小区关联了两个TAG,那么该两个TAG都为PTAG。若该服务小区为Scell,那么该小区关联的至少一个TAG都为STAG。
例如,TA定时器超时后的行为可以包括:
当定时器timeAlignmentTimer到期时(when a timeAlignmentTimer expires:):
a.如果定时器timeAlignmentTimer与PTAG相关联(if the timeAlignmentTimer is associated with the PTAG:):
i.清空所有服务小区的所有HARQ缓存(flush all HARQ buffers for all Serving Cells;);
ii.如果配置了,通知RRC释放所有服务小区的PUCCH(notify RRC to release PUCCH for all Serving Cells,if configured;);
iii.如果配置了,通知RRC释放所有服务小区的SRS(notify RRC to release SRS for all Serving Cells,if configured;);
iv.清除任何配置的下行分配和配置的上行授权(clear any configured downlink assignments and configured uplink grants;);
v.清除用于半静态CSI报告的任何PUSCH资源(clear any PUSCH resource for semi-persistent CSI reporting;);
vi.将所有运行的定时器timeAlignmentTimer视为过期(consider all running timeAlignmentTimers as expired;);
vii.维护所有TAG的N
TA(maintain N
TA(defined in TS 38.211[8])of all TAGs.)。
b.否则,如果timeAlignmentTimer与STAG关联,则对于属于此TAG的所有服务小区(else if the timeAlignmentTimer is associated with an STAG,then for all Serving Cells belonging to this TAG:)执行以下行为的至少之一:
i.清空所有HARQ缓存(flush all HARQ buffers;);
ii.如果配置了,通知RRC释放PUCCH(notify RRC to release PUCCH,if configured;);
iii.如果配置了,通知RRC释放SRS(notify RRC to release SRS,if configured;);
iv.清除任何配置的下行分配和配置的上行授权(clear any configured downlink assignments and configured uplink grants;);
v.清除用于半静态CSI报告的任何PUSCH资源(clear any PUSCH resource for semi-persistent CSI reporting;);
vi.维护所有TAG的N
TA(maintain N
TA(defined in TS 38.211[8])of this TAG.)。
可选地,UE可以基于TAG关联的小区上是否有正在运行的其他TRP/TAG关联的TA timer来确定超时行为。
举例来说:Pcell上第一PTAG的定时器(timer)超时,若第二PTAG的timer还在运行期间,那么UE可以基于第一PTAG关联的第一TRP与网络侧进行传输。可选的UE可以触发随机接入流程来恢复第一TAG的TA。
若该TA timer关联了STAG,UE行为可以与示例1类似:
1.释放该cell关联的资源;或者,
2.不动作;或者,
3.释放该Serving Cell上相应TAG/TRP关联的资源。
示例3一个TAG包括两个sub-TAG
对于每个服务小区,UE认为Pcell/Pscell关联的TAG为PTAG,Scell关联的TAG为STAG。进一步的,每个PTAG/STAG下进一步区分第三TAG和第四TAG,其中第三TAG关联第一TRP,第四TAG关联第二TRP。
TA定时器是基于每个子TAG(sub-TAG)维护的,定时器超时行为可以参考示例1或示例2。
在本申请实施例中,可以提供一种TAG的确定方式,使得UE在mTRP场景下可以明确TAG的维护方式以及相应TA定时器超时的行为。进而,有利于保持上行业务的连续性。
图7是根据本申请一实施例的终端设备700的示意性框图。该终端设备700可以包括:
处理单元710,用于基于第一方式确定TAG的类型;基于该TAG的类型和该TAG关联的定时器,执行第一行为。
在一种实施方式中,在一个CG和/或一个MAC实体关联一个PTAG的情况下,该第一方式包括以下至少之一:
初始接入的小区和/或TRP关联的TAG为第一TAG;
控制资源集0关联的TRP关联的TAG为第一TAG;
接收公共信道的TRP关联的TAG为第一TAG;
第一控制资源集索引关联的TAG为第一TAG,第二控制资源集索引关联的TAG为第二TAG;
TCI状态关联了服务小区的波束信息的TRP关联的TAG为第一TAG;
在SCG添加和/或改变过程中,初次发起随机接入过程的小区和/或TRP关联的TAG为第一TAG;
Pcell和/或Pscell关联的TAG为第一TAG;
除了该第一TAG之外的TAG为第二TAG。
在一种实施方式中,在一个CG和/或一个MAC实体关联两个PTAG的情况下,该第一方式包括以下至少之一:
Pcell和/或Pscell关联的TAG为第一TAG;
Scell关联的TAG为第二TAG。
在一种实施方式中,在一个TAG包括至少一个子TAG的情况下,该第一方式包括以下至少之一:
每个PTAG和/或STAG分别包括的子TAG为第一TAG和第二TAG;
该第一TAG关联第一TRP,该第二TAG关联第二TRP。
在一种实施方式中,该TRP的标识包括以下至少之一:
TCI状态;
空间关系信息;
控制资源池索引;
下行参考信号组;
用于半静态上行通道的上行信道和/或参考信号;
用于半静态参考信号的上行信道和/或参考信号;
TAG的标识。
在一种实施方式中,在第一TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入流程恢复定时提前TA;
不动作,在第一TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第一TAG关联的资源;
释放第一TRP关联的资源。
在本申请实施例中,该第一TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第一TAG关联的小区关联的所有TAG定时器可以包括第一TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。
在一种实施方式中,在第二TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入过程恢复TA;
不动作,在第二TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第二TAG关联的资源;
释放第二TRP关联的资源。
在本申请实施例中,该第二TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第二TAG关联的小区关联的所有TAG定时器可以包括第二TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。
在一种实施方式中,在第三TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入流程恢复定时提前TA;
不动作,在第三TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第三TAG关联的资源;
释放第三TRP关联的资源。
在本申请实施例中,该第三TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第三TAG关联的小区关联的所有TAG定时器可以包括第三TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。
在一种实施方式中,在第四TAG关联的定时器超时的情况下,该第一行为包括以下至少之一:
释放当前服务小区关联的资源;
释放所有服务小区关联的资源;
触发随机接入过程恢复TA;
不动作,在第四TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;
释放第四TAG关联的资源;
释放第四TRP关联的资源。
在本申请实施例中,该第四TAG关联的小区可以为一个Pcell、一个Pscell或一个Scell。该第四TAG关联的小区关联的所有TAG定时器可以包括第四TAG关联的一个Pcell、一个Psell或一个Scell上所有TRP关联的TAG定时器。
在一种实施方式中,在该TAG关联的定时器超时的情况下,该第一行为还包括:发送TA恢复请求。
在一种实施方式中,发送该TA恢复请求的方式包括以下至少之一:
MAC CE;
SR;
随机接入过程。
在一种实施方式中,该MAC CE中携带以下至少之一:
TAG标识;
TRP标识;
服务小区标识;
终端设备测量的TRP的DL定时信息;
L1-RSRP测量结果。
在一种实施方式中,该MAC CE使用的资源包括以下至少之一:PDCCH动态调度的资源;CG资源;RAR中指示的资源。
在一种实施方式中,该SR是针对每个TRP和/或每个TAG配置的。
在一种实施方式中,该TAG和/或该TRP的SR关联该TRP的PUCCH资源;或者
该TAG和/或该TRP的SR关联服务小区上另一个TRP的PUCCH资源。
在一种实施方式中,该随机接入过程是基于TA无效的TAG以及该TAG和/或该TRP关联的随机接入资源发起的。
在一种实施方式中,在第一TRP、第一TAG或第三TAG的至少之一关联的TA无效的情况下,该TA是通过终端设备触发的随机接入过程恢复的。
在一种实施方式中,该终端设备向TRP发起随机接入过程的触发方式包括:
该终端设备基于与TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程;
该终端设备接收网络侧的指示信息,该指示信息指示该终端设备向目标TRP发起基于非竞争的随机接入资源。
在一种实施方式中,该指示信息由DCI或媒体接入控制控制元素MAC CE承载。
在一种实施方式中,该指示信息包括以下至少一种:
控制资源集合池索引;
TCI状态;
空间关系信息;
TAG标识;
PCI;
同步资源块SSB索引;
前导码索引;
物理随机接入信道掩码索引(PRACH mask index)。
本申请实施例的终端设备700能够实现前述的方法600实施例中的终端设备的对应功能。该终端设备700中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的终端设备700中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图8是根据本申请实施例的通信设备800示意性结构图。该通信设备800包括处理器810,处理器810可以从存储器中调用并运行计算机程序,以使通信设备800实现本申请实施例中的方法。
在一种实施方式中,通信设备800还可以包括存储器820。其中,处理器810可以从存储器820中 调用并运行计算机程序,以使通信设备800实现本申请实施例中的方法。
其中,存储器820可以是独立于处理器810的一个单独的器件,也可以集成在处理器810中。
在一种实施方式中,通信设备800还可以包括收发器830,处理器810可以控制该收发器830与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器830可以包括发射机和接收机。收发器830还可以进一步包括天线,天线的数量可以为一个或多个。
在一种实施方式中,该通信设备800可为本申请实施例的网络设备,并且该通信设备800可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一种实施方式中,该通信设备800可为本申请实施例的终端设备,并且该通信设备800可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
图9是根据本申请实施例的芯片900的示意性结构图。该芯片900包括处理器910,处理器910可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
在一种实施方式中,芯片900还可以包括存储器920。其中,处理器910可以从存储器920中调用并运行计算机程序,以实现本申请实施例中由终端设备或者网络设备执行的方法。
其中,存储器920可以是独立于处理器910的一个单独的器件,也可以集成在处理器910中。
在一种实施方式中,该芯片900还可以包括输入接口930。其中,处理器910可以控制该输入接口930与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
在一种实施方式中,该芯片900还可以包括输出接口940。其中,处理器910可以控制该输出接口940与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
在一种实施方式中,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一种实施方式中,该芯片可应用于本申请实施例中的终端设备,并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
应用于网络设备和终端设备的芯片可以是相同的芯片或不同的芯片。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、现成可编程门阵列(field programmable gate array,FPGA)、专用集成电路(application specific integrated circuit,ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中,上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM)。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图10是根据本申请实施例的通信系统1000的示意性框图。该通信系统1000包括终端设备1010和网络设备1020。
终端设备1010,用于基于第一方式确定TAG的类型;基于该TAG的类型和该TAG关联的定时器,执行第一行为。
网络设备1020,与终端设备交互,可以向终端设备发送指示信息。
其中,该终端设备1010可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备1020可以用于实现上述方法中由网络设备或网络侧实现的相应的功能。为了简洁,在此不再赘述。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时,全部或部分地产生按照本申请实施例中的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
以上所述仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以该权利要求的保护范围为准。
Claims (41)
- 一种通信方法,包括:终端设备基于第一方式确定定时提前组TAG的类型;所述终端设备基于所述TAG的类型和所述TAG关联的定时器,执行第一行为。
- 根据权利要求1所述的方法,其中,在一个小区组CG和/或一个媒体接入控制MAC实体关联一个主定时提前组PTAG的情况下,所述第一方式包括以下至少之一:主小区Pcell和/或主辅小区Pscell上初始接入的小区和/或传输接收点TRP关联的TAG为第一TAG;Pcell和/或Pscell上控制资源集0关联的TRP关联的TAG为第一TAG;Pcell和/或Pscell上接收公共信道的TRP关联的TAG为第一TAG;Pcell和/或Pscell上第一控制资源集索引关联的TAG为第一TAG,第二控制资源集索引关联的TAG为第二TAG;Pcell和/或Pscell上传输配置指示TCI状态关联了服务小区的波束信息的TRP关联的TAG为第一TAG;在辅小区组SCG添加和/或改变过程中,初次发起随机接入过程的小区和/或TRP关联的TAG为第一TAG;Pcell和/或Pscell关联的TAG为第一TAG;除了所述第一TAG之外的TAG为第二TAG。
- 根据权利要求1或2所述的方法,其中,在一个CG和/或一个MAC实体关联两个PTAG的情况下,所述第一方式包括以下至少之一:Pcell和/或Pscell关联的TAG为第一TAG;辅小区Scell关联的TAG为第二TAG。
- 根据权利要求1至3中任一项所述的方法,其中,在一个TAG包括至少一个子TAG的情况下,所述第一方式包括以下至少之一:每个PTAG和/或辅定时提前组STAG分别包括的子TAG为第三TAG和第四TAG;所述第三TAG关联第一TRP,所述第四TAG关联第二TRP。
- 根据权利要求2或4所述的方法,其中,所述TRP的标识包括以下至少之一:TCI状态;空间关系信息;控制资源池索引;下行参考信号组;用于半静态上行通道的上行信道和/或参考信号;用于半静态参考信号的上行信道和/或参考信号;TAG的标识。
- 根据权利要求2至5中任一项所述的方法,其中,在第一TAG或第三TAG关联的定时器超时的情况下,所述第一行为包括以下至少之一:释放当前服务小区关联的资源;释放所有服务小区关联的资源;触发随机接入流程恢复定时提前TA;不动作,在第一TAG或第三TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;释放第一TAG或第三TAG关联的资源;释放第一TRP或第三TAG关联的资源。
- 根据权利要求2至6中任一项所述的方法,其中,在第二TAG或第四TAG关联的定时器超时的情况下,所述第一行为包括以下至少之一:释放当前服务小区关联的资源;释放所有服务小区关联的资源;触发随机接入过程恢复TA;不动作,在第二TAG或第四TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;释放第二TAG或第四TAG关联的资源;释放第二TRP或第四TAG关联的资源。
- 根据权利要求1至7中任一项所述的方法,其中,在所述TAG关联的定时器超时的情况下,所述第一行为还包括:发送TA恢复请求。
- 根据权利要求8所述的方法,其中,发送所述TA恢复请求的方式包括以下至少之一:MAC CE;上行调度请求SR;随机接入过程。
- 根据权利要求9所述的方法,其中,所述MAC CE中携带以下至少之一:TAG标识;TRP标识;服务小区标识;终端设备测量的TRP的下行DL定时信息;层一参考信号接收功率L1-RSRP测量结果。
- 根据权利要求9或10所述的方法,其中,所述MAC CE使用的资源包括以下至少之一:物理下行控制信道PDCCH动态调度的资源;CG资源;随机接入响应RAR中指示的资源。
- 根据权利要求9至11中任一项所述的方法,其中,所述SR是针对每个TRP和/或每个TAG配置的。
- 根据权利要求12所述的方法,其中,所述TAG和/或所述TRP的SR关联所述TRP的物理上行控制信道PUCCH资源;或者所述TAG和/或所述TRP的SR关联服务小区上另一个TRP的PUCCH资源。
- 根据权利要求12或13所述的方法,其中,所述随机接入过程是基于TA无效的TAG以及所述TAG和/或所述TRP关联的随机接入资源发起的。
- 根据权利要求14所述的方法,其中,在第一TRP、第一TAG或第三TAG的至少之一关联的TA无效的情况下,所述TA是通过终端设备触发的随机接入过程恢复的。
- 根据权利要求1至15中任一项所述的方法,其中,所述终端设备向TRP发起随机接入过程的触发方式包括:所述终端设备基于与TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程;所述终端设备接收网络侧的指示信息,所述指示信息指示所述终端设备向目标TRP发起基于非竞争的随机接入资源。
- 根据权利要求16所述的方法,其中,所述指示信息由DCI或媒体接入控制控制元素MAC CE承载。
- 根据权利要求16或17所述的方法,其中,所述指示信息包括以下至少一种目标TRP信息:控制资源集合池索引;TCI状态;空间关系信息;TAG标识;物理小区标识PCI;同步资源块SSB索引;前导码索引;物理随机接入信道PRACH掩码索引。
- 一种终端设备,包括:处理单元,用于基于第一方式确定定时提前组TAG的类型;基于所述TAG的类型和所述TAG关联的定时器,执行第一行为。
- 根据权利要求19所述的终端设备,其中,在一个小区组CG和/或一个媒体接入控制MAC实体关联一个主定时提前组PTAG的情况下,所述第一方式包括以下至少之一:Pcell和/或Pscell上初始接入的小区和/或传输接收点TRP关联的TAG为第一TAG;Pcell和/或Pscell上控制资源集0关联的TRP关联的TAG为第一TAG;Pcell和/或Pscell上接收公共信道的TRP关联的TAG为第一TAG;Pcell和/或Pscell上第一控制资源集索引关联的TAG为第一TAG,第二控制资源集索引关联的TAG为第二TAG;Pcell和/或Pscell上TCI状态关联了服务小区的波束信息的TRP关联的TAG为第一TAG;在SCG添加和/或改变过程中,初次发起随机接入过程的小区和/或TRP关联的TAG为第一TAG;Pcell和/或Pscell关联的TAG为第一TAG;除了所述第一TAG之外的TAG为第二TAG。
- 根据权利要求19或20所述的终端设备,其中,在一个CG和/或一个MAC实体关联两个PTAG的情况下,所述第一方式包括以下至少之一:Pcell和/或Pscell关联的TAG为第一TAG;Scell关联的TAG为第二TAG。
- 根据权利要求19至21中任一项所述的终端设备,其中,在一个TAG包括至少一个子TAG的情况下,所述第一方式包括以下至少之一:每个PTAG和/或辅定时提前组STAG分别包括的子TAG为第三TAG和第四TAG;所述第三TAG关联第一TRP,所述第四TAG关联第二TRP。
- 根据权利要求20或22所述的终端设备,其中,所述TRP的标识包括以下至少之一:TCI状态;空间关系信息;控制资源池索引;下行参考信号组;用于半静态上行通道的上行信道和/或参考信号;用于半静态参考信号的上行信道和/或参考信号;TAG的标识。
- 根据权利要求20至23中任一项所述的终端设备,其中,在第一TAG或第三TAG关联的定时器超时的情况下,所述第一行为包括以下至少之一:释放当前服务小区关联的资源;释放所有服务小区关联的资源;触发随机接入流程恢复定时提前TA;不动作,在第一TAG或第三TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;释放第一TAG或第三TAG关联的资源;释放第一TRP或第三TAG关联的资源。
- 根据权利要求20至24中任一项所述的终端设备,其中,在第二TAG或第四TAG关联的定时器超时的情况下,所述第一行为包括以下至少之一:释放当前服务小区关联的资源;释放所有服务小区关联的资源;触发随机接入过程恢复TA;不动作,在第二TAG或第四TAG关联的小区关联的所有TAG定时器都超时的情况下执行相应行为;释放第二TAG或第四TAG关联的资源;释放第二TRP或第四TAG关联的资源。
- 根据权利要求19至25中任一项所述的终端设备,其中,在所述TAG关联的定时器超时的情况下,所述第一行为还包括:发送TA恢复请求。
- 根据权利要求26所述的终端设备,其中,发送所述TA恢复请求的方式包括以下至少之一:MAC CE;SR;随机接入过程。
- 根据权利要求27所述的终端设备,其中,所述MAC CE中携带以下至少之一:TAG标识;TRP标识;服务小区标识;终端设备测量的TRP的DL定时信息;L1-RSRP测量结果。
- 根据权利要求27或28所述的终端设备,其中,所述MAC CE使用的资源包括以下至少之一:物理下行控制信道PDCCH动态调度的资源;CG资源;随机接入响应RAR中指示的资源。
- 根据权利要求27至29中任一项所述的终端设备,其中,所述SR是针对每个TRP和/或每个TAG配置的。
- 根据权利要求30所述的终端设备,其中,所述TAG和/或所述TRP的SR关联所述TRP的物理上行控制信道PUCCH资源;或者所述TAG和/或所述TRP的SR关联服务小区上另一个TRP的PUCCH资源。
- 根据权利要求30或31所述的终端设备,其中,所述随机接入过程是基于TA无效的TAG以及所述TAG和/或所述TRP关联的随机接入资源发起的。
- 根据权利要求32所述的终端设备,其中,在第一TRP、第一TAG或第三TAG的至少之一关联的TA无效的情况下,所述TA是通过终端设备触发的随机接入过程恢复的。
- 根据权利要求19至33中任一项所述的终端设备,其中,所述终端设备向TRP发起随机接入过程的触发方式包括:所述终端设备基于与TRP关联的随机接入资源向关联的TRP发起基于竞争的随机接入过程;所述终端设备接收网络侧的指示信息,所述指示信息指示所述终端设备向目标TRP发起基于非竞争的随机接入资源。
- 根据权利要求34所述的终端设备,其中,所述指示信息由DCI或MAC CE承载。
- 根据权利要求34或35所述的终端设备,其中,所述指示信息包括以下至少一种目标TRP信息:控制资源集合池索引;TCI状态;空间关系信息;TAG标识;PCI;同步资源块SSB索引;前导码索引;PRACH掩码索引。
- 一种终端设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以使所述终端设备执行如权利要求1至18中任一项所述的方法。
- 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至18中任一项所述的方法。
- 一种计算机可读存储介质,用于存储计算机程序,当所述计算机程序被设备运行时使得所述设备执行如权利要求1至18中任一项所述的方法。
- 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至18中任一项所述的方法。
- 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法。
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