WO2024031293A1 - 小区改变的方法及装置 - Google Patents

小区改变的方法及装置 Download PDF

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Publication number
WO2024031293A1
WO2024031293A1 PCT/CN2022/110980 CN2022110980W WO2024031293A1 WO 2024031293 A1 WO2024031293 A1 WO 2024031293A1 CN 2022110980 W CN2022110980 W CN 2022110980W WO 2024031293 A1 WO2024031293 A1 WO 2024031293A1
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Prior art keywords
signaling
timer
cell
network
reset
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PCT/CN2022/110980
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English (en)
French (fr)
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贾美艺
易粟
路杨
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富士通株式会社
贾美艺
易粟
路杨
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Priority to PCT/CN2022/110980 priority Critical patent/WO2024031293A1/zh
Publication of WO2024031293A1 publication Critical patent/WO2024031293A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements

Definitions

  • This application relates to the field of communications.
  • Network-controlled mobility is applicable to connected terminals and can be divided into two types of mobility: cell-level mobility and beam-level mobility.
  • Radio Bearers DRBs
  • RLC AM mode PDCP can be re-established together with security key updates, or initiate a data recovery process without key updates.
  • DRBs DRBs using RLC UM mode
  • PDCP can be rebuilt with security key updates, or left unchanged without key updates.
  • SRBs Signaling radio bearers
  • PDCP can remain unchanged without key updates, discard stored PDCP PDUs/SDUs, or be rebuilt together with security key updates.
  • serving cell changes are triggered by L3 measurements and completed by RRC signaling, synchronous reconfiguration (Reconfiguration with Synchronisation) triggered by changes in the primary cell PCell and primary and secondary cells PSCell, and the release of secondary cell SCells when applicable.
  • Inter-cell mobility may include intra-gNB-DU mobility, intra-gNB-CU inter-gNB-DU mobility, and inter-gNB-CU mobility.
  • serving cell changes are triggered by L3 measurements and completed by RRC signaling, involving a complete L2 (and L1) reset, thus resulting in longer delays and greater signal loss than beam-level mobility. causing overhead and longer outage times.
  • the sending PDCP entity When the upper layer requests PDCP reestablishment, the sending PDCP entity will:
  • the receiving PDCP entity When the upper layer requests PDCP reestablishment, the receiving PDCP entity will:
  • the terminal device After executing the above process, the terminal device will transfer data.
  • the sending PDCP entity will execute all PDCP Data PDUs previously submitted to the reconstructed or released AM RLC entity and that have not been confirmed by the lower layer for successful delivery in ascending order of the associated COUNT value. retransmission.
  • the terminal device After executing the above process, the terminal device will transfer data.
  • the terminal When the upper layer requests an RLC entity to be reestablished, the terminal will discard all RLC SDUs, RLC SDU segments and RLC PDUs, stop and reset all timers, and reset all state variables to their initial values.
  • the MAC entity When the upper layer requests the reset of the RLC entity, the MAC entity will:
  • timer T304/T310/T312/T390 involves cell changes, as follows:
  • serving cell change involves the above complete L2 reset, resulting in longer delay, greater signaling overhead and longer interruption time than beam-level mobility.
  • embodiments of the present application provide a method and device for cell change.
  • a device for changing a cell is provided.
  • the device is provided on a terminal device.
  • the device includes: a first receiving unit that receives L1 signaling and/or L2 from a first network node. signaling; and a first change unit that changes from a serving cell to a cell indicated by the L2 signaling and/or L1 signaling, wherein the change from the serving cell to the L2 signaling and/or L1 signaling
  • the indicated cell includes: at least one of L1 partial reset, L2 partial reset, and a timer for processing RRC layer maintenance.
  • a device for cell change is provided.
  • the device is applied to a first network node.
  • the device includes: a first sending unit that sends L1 signaling and/or L2 to a terminal device. Signaling to instruct the terminal device to change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling, wherein the change from the serving cell to the L2 signaling and/or L1 signaling indicates
  • the cell includes: at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction, and a timer for processing RRC layer maintenance.
  • a terminal device is provided, and the terminal device includes the device according to the first aspect of the embodiment of the present application.
  • a network node is provided, and the network node includes the device according to the second aspect of the embodiment of the present application.
  • a communication system includes the terminal device according to the third aspect of the embodiments of the present application and/or the terminal device according to the fourth aspect of the embodiments of the present application. network node.
  • a method for changing a cell is provided.
  • the method is applied to a terminal device.
  • the method includes: receiving L1 signaling and/or L2 signaling from a first network node; and receiving L1 signaling and/or L2 signaling from a service node.
  • the cell is changed to the cell indicated by the L2 signaling and/or L1 signaling, wherein the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: L1 partial reset, L2 partial Reset and process at least one of the timers maintained by the RRC layer.
  • a method for changing a cell is provided.
  • the method is applied to a first network node.
  • the method includes: sending L1 signaling and/or L2 signaling to a terminal device to indicate that the The terminal equipment changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling, wherein the changing from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: partial MAC At least one of an entity reset, a partial RLC re-establishment, a partial PDCP re-establishment and a timer for handling RRC layer maintenance.
  • a computer-readable program is provided, wherein when the program is executed in a cell-changing apparatus or terminal equipment, the program causes the cell-changing apparatus or terminal equipment to execute the present invention.
  • a storage medium storing a computer-readable program, wherein the computer-readable program causes a device or terminal device for cell changing to execute the method described in the sixth aspect of the embodiment of the present application.
  • Methods of neighborhood change are provided.
  • a computer-readable program wherein when the program is executed in a cell-changing device or a network node, the program causes the cell-changing device or network node to execute the present invention.
  • a storage medium storing a computer-readable program, wherein the computer-readable program causes a cell changing device or network device to perform the seventh aspect of the embodiment of the present application. method of community change.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node,
  • the change includes at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance, thereby providing an effective mechanism to implement the process of cell change based on L1/L2, and reducing delay and signaling. Overhead and interruption time.
  • Figure 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • Figure 2 is a schematic diagram of the deployment scenario of NG-RAN according to the embodiment of the present application.
  • FIG. 3 is a schematic diagram of the IAB deployment scenario according to the embodiment of the present application.
  • Figure 4 is a schematic diagram of the cell changing method in Embodiment 1 of the present application.
  • Figure 5 is a schematic diagram of a cell changing method in Embodiment 2 of the present application.
  • Figure 6 is a schematic diagram of a cell changing method in Embodiment 3 of the present application.
  • Figure 7 is a schematic diagram of a cell changing device according to Embodiment 4 of the present application.
  • Figure 8 is a schematic diagram of a cell changing device according to Embodiment 5 of the present application.
  • Figure 9 is a schematic block diagram of the system structure of the terminal device in Embodiment 6 of the present invention.
  • Figure 10 is a schematic block diagram of the system structure of a network node in Embodiment 7 of the present invention.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be used by these terms. restricted.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprises,” “includes,” “having” and the like refer to the presence of stated features, elements, elements or components but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution Enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Enhanced
  • LTE-A Long Term Evolution Enhanced
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • communication between devices in the communication system can be carried out according to communication protocols at any stage, which may include but are not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and the future. 5G, New Wireless (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • Network device refers to, for example, a device in a communication system that connects user equipment to the communication network and provides services to the user equipment.
  • Network equipment or network nodes may include but are not limited to the following equipment: “node” and/or “donor” under the IAB architecture, base station (BS, Base Station), access point (AP, Access Point) , Transmission Reception Point (TRP, Transmission Reception Point), broadcast transmitter, Mobile Management Entity (MME, Mobile Management Entity), gateway, server, wireless network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.
  • BS Base Station
  • AP Access Point
  • TRP Transmission Reception Point
  • MME Mobile Management Entity
  • gateway server
  • wireless network controller RNC, Radio Network Controller
  • BSC Base Station Controller
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc.
  • it may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay or low-power node (such as femto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay or low-power node such as femto, pico, etc.
  • base station can include some or all of their functions.
  • Each base station can provide communication coverage for a specific geographical area.
  • a 5G base station gNB can include one gNB CU and one or more gNB DUs, where CU/DU are A logical node of gNB with partial functions of gNB.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” refers to a device that accesses a communication network through a network device and receives network services, and may also be called a "Terminal Equipment” (TE, Terminal Equipment).
  • Terminal equipment can be fixed or mobile, and can also be called mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
  • MS Mobile Station
  • SS subscriber station
  • AT Access Terminal
  • station Access Terminal
  • the terminal equipment may include but is not limited to the following equipment: cellular phone (Cellular Phone), personal digital assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication equipment, handheld device, machine-type communication equipment, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • cellular phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication equipment
  • handheld device machine-type communication equipment
  • laptop computer Cordless phones
  • Cordless phones smartphones, smart watches, digital cameras, and more.
  • the terminal device can also be a machine or device for monitoring or measuring.
  • the terminal device can include but is not limited to: Machine Type Communication (MTC) terminals, Vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • Figure 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of taking terminal equipment and network equipment as examples.
  • the communication system 100 includes a first network node 101 and a terminal equipment 102.
  • the first network node 101 is a gNB, or includes one gNB-CU and one or more connected gNB-DU(s);
  • the first network node 101 may be an IAB-donor or an IAB node, or include an IAB-donor-CU and one or more connected IAB-donor-DU(s), or include an IAB- donor-CU and one or more IAB-node-DU(s) connected through other nodes.
  • the first network node 101 when the terminal device 102 performs a cell change, the first network node 101 is the source network node and also serves as the target network node; or as shown in Figure 1, the communication system 100 may also include a second network node 103, In this case, when the terminal device 102 performs cell change, the first network node 101 is the source network node, and the second network node 103 is the target network node.
  • Figure 1 only takes one terminal device as an example for illustration.
  • the first network node 101 and the second network node 103 are, for example, NR gNBs.
  • the first network node 101 and the second network node 103 are different gNB-DUs within the same gNB-CU;
  • the first network node 101 and the second network node 103 are different TRPs or repeaters within the same gNB-DU; or the first network node 101 is both a source network node and a target network node, and the source cell and the target cell are both on the first network node 101.
  • the communication system 100 in the embodiment of the present application includes the first network node 101 and the terminal device 102.
  • Figure 1 represents an IAB network, where the terminal device 102 can be a UE or an IAB-MT:
  • the first network node 101 and the second network node 103 are different IAB-donor-CUs, that is, when the terminal device 102 needs to perform cell changes, the first network node 101 is the source IAB-donor -CU, the second network node 103 is the target IAB-donor-CU;
  • the first network node 101 and the second network node 103 are different IAB-donor-DUs in the same IAB-donor-CU, that is, the terminal device 102 needs to perform
  • the first network node 101 is the source IAB-donor-DU
  • the second network node 103 is the target IAB-donor-DU
  • the communication system 100 in the embodiment of the present application includes a first network node 101 and a terminal device 102.
  • the first network node 101 is the source IAB-donor-DU, Also targets IAB-donor-DU.
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC Ultra-Reliable and Low- Latency Communication
  • the cell changing method in the embodiment of the present application can be applied to various deployment scenarios, such as NG-RAN deployment scenarios, IAB deployment scenarios, etc.
  • FIG. 2 is a schematic diagram of the deployment scenario of NG-RAN according to the embodiment of the present application.
  • NG-RAN includes a set of gNBs connected to the 5GC through the NG interface.
  • gNBs can be interconnected through the Xn interface.
  • One gNB can include one gNB-CU and one or more gNB-DU(s).
  • One gNB-CU and one gNB-DU are connected through the F1 interface.
  • One gNB-DU can only be connected to one gNB-CU.
  • FIG 3 is a schematic diagram of an IAB deployment scenario according to an embodiment of the present application.
  • NG-RAN is wirelessly connected to the gNB that can serve IAB-nodes through IAB-node, which is called IAB-donor to support IAB.
  • IAB-donor includes an IAB-donor-CU and one or more IAB-donor-DU(s).
  • gNB-DU Unless otherwise specified, all functions defined for gNB-DU are equally applicable to IAB-DU and IAB-donor-DU. All functions defined for gNB-CU are also applicable to IAB-donor-CU. All functions defined for UE are also applicable to IAB-DU. The same applies to IAB-MT.
  • the embodiment of the present application provides a cell changing method, which is applied to terminal equipment.
  • this method is applied to the terminal device 102 in Figure 1 .
  • FIG 4 is a schematic diagram of the cell changing method in Embodiment 1 of the present application. As shown in Figure 4, the method includes:
  • Step 401 Receive L1 signaling and/or L2 signaling from the first network node.
  • Step 402 Change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling,
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1 partial reset,
  • the L2 part resets and processes at least one of the timers maintained by the RRC layer, thereby providing an effective mechanism to implement the process of cell change based on L1/L2, and reducing delay, signaling overhead and interruption time.
  • cell change includes: at least one of serving cell change, special cell change, and primary cell change (switch).
  • the source and target cells in the cell change are synchronous or asynchronous.
  • the source cell and the target cell in the cell change are co-frequency or inter-frequency.
  • the source cell and/or the target cell in the cell change operate on FR1 or FR2.
  • the first network node is a source network node, that is, a network node to which the source cell belongs.
  • L1 refers to layer 1, including, for example, the physical layer
  • L2 refers to layer 2, including, for example, the MAC layer or MAC sublayer, the PDCP layer or PDCP sublayer, and the RLC layer or RLC sublayer;
  • L3 refers to layer 3, including, for example, the RRC layer.
  • step 401 the terminal device receives L1 signaling and/or L2 signaling from the first network node.
  • step 502 the terminal device changes from the current serving cell to the one indicated by the L2 signaling and/or L1 signaling. community.
  • the terminal device receives L1 signaling from the first network node and changes from the current serving cell to the cell indicated by the L1 signaling;
  • the terminal device receives L2 signaling from the first network node and changes from the current serving cell to the cell indicated by the L2 signaling;
  • the terminal device receives L2 signaling and L1 signaling from the first network node, where the L2 signaling includes multiple indicated cells, the L1 signaling indicates one of the multiple cells, and the terminal device receives the L2 signaling from the current The serving cell changes to the cell indicated by the L1 signaling.
  • the L1 signaling is downlink control information (DCI).
  • DCI downlink control information
  • this L2 signaling is MAC CE.
  • the L1 signaling indicates at least one of the following:
  • TCI state ID for example, the L1 signaling reuse or DCI updated based on the existing TCI state ID
  • the UE identity assigned by the target cell to the terminal equipment such as C-RNTI;
  • Scheduling information for example, includes UL grant and/or DL assignment in the target cell.
  • the L2 signaling indicates at least one of the following:
  • TCI state ID for example, the L2 signaling reuse or MAC CE updated based on the existing TCI state ID
  • the UE identity assigned by the target cell to the terminal equipment such as C-RNTI;
  • Scheduling information for example, includes UL grant and/or DL assignment in the target cell.
  • the terminal device receives L2 signaling and L1 signaling from the first network node, and changes from the current serving cell to the cell indicated by the L2 signaling and L1 signaling, where the L2 signaling and the L1 signaling indicate the same Different information of the cell, such as L1 signaling indicating the TCI state ID of the cell, and L2 signaling indicating the TA information of the cell.
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes at least one of L1 partial reset, L2 partial reset, and a timer handling RRC layer maintenance.
  • the L1 partial reset refers to performing a part of the L1 reset
  • the L2 partial reset refers to performing a part of the L2 reset
  • the L2 partial reset includes at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction.
  • processing the timer for RRC layer maintenance includes: starting or restarting the timer for RRC layer maintenance, and/or stopping the timer for RRC layer maintenance.
  • starting or restarting the timer for RRC layer maintenance includes starting or restarting a handover timer, such as T304.
  • stopping the timer for RRC layer maintenance includes at least one of the following actions:
  • Stop timers related to access attempts such as T390.
  • the partial MAC entity reset includes at least one of the following actions:
  • For the first timer apply the value of the first timer or restart the first timer
  • the timer related to TA (time alignment) is not considered to have timed out
  • the method further includes:
  • Step 403 Receive configuration information of a group of cells from the first network node, and when the configuration information includes the value of the first timer, apply the value; and/or, when the configuration information does not include the first timer value, restart the first timer.
  • this group of cells are candidate cells for performing a cell change process based on L1 signaling and/or L2 signaling;
  • restarting the first timer includes restarting the first timer and using a previous value.
  • the terminal device applies the new value; otherwise, the first timer is restarted and the terminal device uses the previous value, that is, the value configured in the serving cell before performing handover.
  • the first timer is a timer maintained by the MAC layer.
  • the partial RLC reconstruction includes at least one of the following actions:
  • the value of the second timer is applied or the second timer is restarted.
  • the method further includes:
  • Step 404 Receive a set of cell configuration information from the first network node, and when the configuration information includes the value of the second timer, apply the value; and/or, when the configuration information does not include the second timer value, restart the second timer.
  • this group of cells are candidate cells for performing a cell change procedure based on L1 signaling and/or L2 signaling.
  • step 404 and step 403 are optional steps, and in addition, step 404 and step 403 can be performed together.
  • restarting the second timer includes restarting the second timer and using a previous value.
  • the second timer is a timer maintained by the RLC layer.
  • the partial PDCP reconstruction includes at least one of the following actions: PDCP reconstruction without key update; and no data recovery.
  • the PDCP re-establishment without key update includes:
  • the sending PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the sending PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the PDCP reconstruction without key update also includes:
  • the sending PDCP entity will perform at least one of the following:
  • the PDCP re-establishment without key update includes:
  • the receiving PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the receiving PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the PDCP reconstruction without key update also includes:
  • the receiving PDCP entity will continue the current ROCH.
  • the method further includes:
  • Step 405 Receive network signaling from the first network node
  • Step 406 According to the network signaling, determine to perform at least one behavior of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • steps 405 and 406 are optional steps.
  • the execution order of steps 405 and 406 and steps 403 and 404 is not limited, and they can also be executed in combination.
  • the terminal device resets the ROCH protocol when the network command includes an indication for ROCH reset. That is, the indication for ROCH reset is used to instruct the terminal device to reset the ROCH protocol.
  • the terminal device when the network command does not include an indication for ROCH reset, the terminal device does not reset the ROCH protocol or continues the current ROCH.
  • the sending PDCP entity of the terminal device when the network command includes a first indication for ROCH reset, the sending PDCP entity of the terminal device resets the uplink ROCH protocol. That is to say, the first indication for ROCH reset is used to instruct the sending PDCP entity of the terminal device to reset the uplink ROCH protocol.
  • the sending PDCP entity of the terminal device when the network command does not include the first indication for ROCH reset, the sending PDCP entity of the terminal device does not reset the uplink ROCH protocol or continues the current uplink ROCH.
  • the receiving PDCP entity of the terminal device when the network command includes a second indication for ROCH reset, the receiving PDCP entity of the terminal device resets the downlink ROCH protocol. That is to say, the second indication for ROCH reset is used to instruct the receiving PDCP entity of the terminal device to reset the downlink ROCH protocol.
  • the receiving PDCP entity of the terminal device when the network command does not include the second indication for ROCH reset, the receiving PDCP entity of the terminal device does not reset the downlink ROCH protocol or continues the current downlink ROCH.
  • the sending PDCP entity of the terminal device resets the uplink EHC protocol. That is to say, the third indication for EHC reset is used to instruct the sending PDCP entity of the end device to reset the uplink EHC protocol.
  • the sending PDCP entity of the terminal device when the network command does not include the third indication for EHC reset, the sending PDCP entity of the terminal device does not reset the uplink EHC protocol or continue the current uplink EHC.
  • the sending PDCP of the terminal device does not continue to discard UDC. That is to say, the fourth indication for stopping UDC discarding is used to instruct the sending PDCP of the terminal device not to continue discarding UDC.
  • the sending PDCP entity of the terminal device continues to discard UDCs.
  • the terminal device when the network command includes a fifth indication for updating the encryption algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the encryption algorithm and key. That is to say, the fifth indication for updating the encryption algorithm and the key is used to instruct the terminal device to send the PDCP and/or receive the PDCP to update the encryption algorithm and the key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same encryption algorithm and key as the source cell.
  • the terminal device when the network command includes a sixth indication for updating the integrity algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the integrity algorithm and key. That is to say, the sixth indication of updating the integrity algorithm and key is used to instruct the terminal device to update the integrity algorithm and key by sending PDCP and/or receiving PDCP.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same integrity algorithm and key as the source cell. key.
  • the network signaling includes: at least one of an RRC message, a MAC CE, and a DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the granularity of the network signaling is per terminal device, including: the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the granularity of the network signaling is per cell, including: the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the granularity of the network signaling is per cell group, including: the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the granularity of the network signaling is per bearer, including: the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the granularity of the network signaling is per HAQR process, including: the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • timer startup is as follows:
  • the timer stops like this:
  • the timer T304 of the corresponding SpCell is started, optionally, The timer value is set to a value configured by the network; wherein, the low-layer indication may indicate at least one of the following: serving cell change, timer start, and handover.
  • L1 signaling and/or L2 signaling or lower layer indications are associated with the special cells of MCG or SCG.
  • the timer T304 for this cell group is stopped.
  • timer T310 the timer is stopped as follows:
  • the timer T310 of the source SpCell is stopped, if it is running; where , the lower layer indication may indicate at least one of the following: serving cell change, timer stop, handover.
  • L1 signaling and/or L2 signaling or lower layer indications are associated with the special cells of MCG or SCG.
  • timer T312 the timer is stopped as follows:
  • the timer T312 of the corresponding SpCell is stopped, if it is running; where , the lower layer indication may indicate at least one of the following: serving cell change, timer stop, handover.
  • timer T390 and/or T390 the timer is stopped as follows:
  • the indication from the lower layer may indicate at least one of the following: serving cell change, timer stop, handover.
  • L1 signaling and/or L2 signaling or lower layer instructions are associated with the special cell of the MCG.
  • the indication from the lower layer can Indicate at least one of the following: serving cell change, timer stop, handover.
  • L1 signaling and/or L2 signaling or lower layer instructions are associated with the special cell of the MCG.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • the embodiment of the present application provides a method for changing a cell, which corresponds to the method for changing a cell applied to a terminal device described in Embodiment 1.
  • a method for changing a cell which corresponds to the method for changing a cell applied to a terminal device described in Embodiment 1.
  • the method is applied to the first network node and/or a network node or network unit connected to the first network node.
  • the method is applied to the first network node 101 in FIG. 1 .
  • Figure 5 is a schematic diagram of a cell changing method in Embodiment 2 of the present application. As shown in Figure 5, the method includes:
  • Step 501 Send L1 signaling and/or L2 signaling to the terminal device to instruct the terminal device to change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling,
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction and a timer for processing RRC layer maintenance.
  • the method further includes:
  • Step 502 Send network signaling to the terminal device, where the network signaling instructs the terminal device to perform at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • step 502 is optional.
  • the network signaling includes at least one of the following:
  • the indication for ROCH resetting is used to indicate resetting of the uplink ROCH and/or the downlink ROCH.
  • the indication for ROCH resetting includes an indication for indicating the resetting of the uplink ROCH and the downlink ROCH;
  • the indication for ROCH reset includes a first indication and a second indication, the first indication is used to indicate the resetting of the uplink ROCH, and the second indication is used to indicate the resetting of the downlink ROCH.
  • the indication for EHC reset is used to indicate a reset of the uplink EHC protocol.
  • the network signaling includes: at least one of an RRC message, a MAC CE, and a DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the granularity of the network signaling is per terminal device, including: the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the granularity of the network signaling is per cell, including: the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the granularity of the network signaling is per cell group, including: the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the granularity of the network signaling is per bearer, including: the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the granularity of the network signaling is per HAQR process, including: the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • Embodiments of the present application provide a cell changing method, which is applied to a terminal device and a first network node, and corresponds to the cell changing method applied to a terminal device described in Embodiment 1 and the method described in Embodiment 2.
  • the method of cell change applied to the first network node the same content will not be repeatedly described.
  • Figure 6 is a schematic diagram of a cell changing method in Embodiment 3 of the present application. This method is applied to a terminal device and a first network node. As shown in Figure 6, the method includes:
  • Step 601 The terminal device sends the measurement result to the first network node
  • Step 602 Change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling,
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance.
  • the method further includes:
  • Step 603 The first network node sends network signaling to the terminal device
  • Step 604 Based on the network signaling, the terminal device determines to perform at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • steps 603 and 604 are optional steps.
  • steps 601-604 can refer to the records in Embodiment 1 and Embodiment 2, and the description will not be repeated here.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • the embodiment of the present application provides a cell changing device, which is applied to terminal equipment. Since the problem-solving principle of this device is similar to the method of Embodiment 1, its specific implementation can refer to the implementation of the method described in Embodiment 1, and the same or relevant content will not be repeated.
  • FIG. 7 is a schematic diagram of a cell changing device according to Embodiment 4 of the present application. As shown in Figure 7, device 700 includes:
  • the first receiving unit 701 receives L1 signaling and/or L2 signaling from the first network node;
  • the first changing unit 702 changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling,
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance.
  • the L2 partial reset includes at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction.
  • processing the timer for RRC layer maintenance includes: starting or restarting the timer for RRC layer maintenance, and/or stopping the timer for RRC layer maintenance.
  • starting or restarting the timer for RRC layer maintenance includes: starting or restarting a handover timer.
  • stopping the timer for RRC layer maintenance includes at least one of the following actions:
  • the partial MAC entity reset includes at least one of the following actions:
  • For the first timer apply the value of the first timer or restart the first timer
  • the TA-related timer is not considered to have expired
  • the device further includes:
  • the second receiving unit 703 receives configuration information of a group of cells from the first network node
  • the first timer is restarted.
  • restarting the first timer includes restarting the first timer and using a previous value.
  • the first timer is a timer maintained by the MAC layer.
  • the partial RLC reconstruction includes at least one of the following actions:
  • the value of the second timer is applied or the second timer is restarted.
  • the device further includes:
  • the third receiving unit 704 receives configuration information of a group of cells from the first network node,
  • the second timer is restarted.
  • restarting the second timer includes restarting the second timer and using a previous value.
  • the second timer is a timer maintained by the RLC layer.
  • the partial PDCP reconstruction includes at least one of the following actions:
  • the PDCP re-establishment without key update includes:
  • the sending PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the sending PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the PDCP reestablishment without key update also includes: the sending PDCP entity will perform at least one of the following:
  • the PDCP re-establishment without key update includes:
  • the receiving PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the receiving PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the PDCP reconstruction without key update also includes:
  • the receiving PDCP entity will continue the current ROCH.
  • the device further includes:
  • the fourth receiving unit 705 receives network signaling from the first network node
  • Determining unit 706 According to the network signaling, determine to perform at least one behavior of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • the terminal device resets the ROCH protocol when the network command includes an indication for ROCH reset.
  • the terminal device when the network command does not include an indication for ROCH reset, the terminal device does not reset the ROCH protocol or continues the current ROCH.
  • the sending PDCP entity of the terminal device resets the uplink ROCH protocol.
  • the sending PDCP entity of the terminal device when the network command does not include a first indication for ROCH reset, the sending PDCP entity of the terminal device does not reset the uplink ROCH protocol or continue the current uplink ROCH.
  • the receiving PDCP entity of the terminal device resets the downlink ROCH protocol.
  • the receiving PDCP entity of the terminal device when the network command does not include the second indication for ROCH reset, the receiving PDCP entity of the terminal device does not reset the downlink ROCH protocol or continues the current downlink ROCH.
  • the sending PDCP entity of the terminal device resets the uplink EHC protocol.
  • the sending PDCP entity of the terminal device when the network command does not include the third indication for EHC reset, the sending PDCP entity of the terminal device does not reset the uplink EHC protocol or continue the current uplink EHC.
  • the sending PDCP of the terminal device does not continue to discard UDC.
  • the sending PDCP entity of the terminal device continues to discard UDCs.
  • the terminal device when the network command includes a fifth indication for updating the encryption algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the encryption algorithm and key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same encryption algorithm and key as the source cell.
  • the terminal device when the network command includes a sixth indication for updating the integrity algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the integrity algorithm and key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same integrity algorithm and key as the source cell. key.
  • the network signaling includes: at least one of an RRC message, a MAC CE, and a DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the granularity of the network signaling is per terminal device, including: the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the granularity of the network signaling is per cell, including: the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the granularity of the network signaling is per cell group, including: the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the granularity of the network signaling is per bearer, including: the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the granularity of the network signaling is per HAQR process, including: the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • An embodiment of the present application provides a cell changing device, which is applied to a first network node. Since the problem-solving principle of this device is similar to the method of Embodiment 1, its specific implementation can refer to the implementation of the method described in Embodiment 2, and the same or relevant content will not be repeated.
  • FIG 8 is a schematic diagram of a cell changing device according to Embodiment 5 of the present application. As shown in Figure 8, device 800 includes:
  • the first sending unit 801 sends L1 signaling and/or L2 signaling to the terminal device to instruct the terminal device to change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling,
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction and a timer for processing RRC layer maintenance.
  • the device further includes:
  • the second sending unit 802 sends network signaling to the terminal device, where the network signaling instructs the terminal device to perform at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • the network signaling includes at least one of the following:
  • the indication for ROCH resetting is used to indicate resetting of the uplink ROCH and/or the downlink ROCH.
  • the indication for ROCH reset includes an indication for indicating the reset of uplink ROCH and downlink ROCH, or,
  • the indication for ROCH resetting includes a first indication and a second indication.
  • the first indication is used to indicate the resetting of the uplink ROCH
  • the second indication is used to indicate the resetting of the downlink ROCH.
  • the indication for EHC reset is used to indicate a reset of the uplink EHC protocol.
  • the network signaling includes: at least one of an RRC message, a MAC CE, and a DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the granularity of the network signaling is per terminal device, including: the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the granularity of the network signaling is per cell, including: the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the granularity of the network signaling is per cell group, including: the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the granularity of the network signaling is per bearer, including: the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the granularity of the network signaling is per HAQR process, including: the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • An embodiment of the present application provides a terminal equipment, which includes the device for changing a cell as described in Embodiment 4.
  • FIG. 9 is a schematic block diagram of the system structure of the terminal device according to Embodiment 6 of the present invention.
  • the terminal device 900 may include a processor 910 and a memory 920; the memory 920 is coupled to the processor 910. It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunications functions or other functions.
  • the functionality of the cell changing means may be integrated into the processor 910.
  • the processor 910 is configured to: receive L1 signaling and/or L2 signaling from the first network node; and change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling, wherein , the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset, and a timer for processing RRC layer maintenance.
  • the cell changing device can be configured separately from the processor 910.
  • the cell changing device can be configured as a chip connected to the processor 910, and the functions of the cell changing device are implemented under the control of the processor 910. .
  • the terminal device 900 may also include: a communication module 930 , an input unit 940 , a display 950 , and a power supply 960 . It is worth noting that the terminal device 900 does not necessarily include all components shown in FIG. 9 ; in addition, the terminal device 900 may also include components not shown in FIG. 9 , and reference may be made to related technologies.
  • the processor 910 is sometimes called a controller or operating control and may include a microprocessor or other processor device and/or a logic device.
  • the processor 1010 receives input and controls the various components of the terminal device 1000 . operate.
  • the memory 920 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices. Various data can be stored, and programs that execute related information can also be stored. And the processor 910 can execute the program stored in the memory 920 to implement information storage or processing, etc. The functions of other components are similar to the existing ones and will not be described again here. Each component of the terminal device 900 may be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the present invention.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • An embodiment of the present invention provides a network node.
  • the network device includes the cell changing device described in Embodiment 5.
  • FIG 10 is a schematic block diagram of the system structure of a network node in Embodiment 7 of the present invention.
  • network node 1000 may include: a processor 1010 and a memory 1020; the memory 1020 is coupled to the processor 1010.
  • the memory 1020 can store various data; in addition, it also stores an information processing program 1030, and executes the program 1030 under the control of the processor 1010 to receive various information sent by the terminal device and send various information to the terminal device. .
  • the functionality of the cell changing means may be integrated into the processor 1110 .
  • the processor 1010 may be configured to: send L1 signaling and/or L2 signaling to the terminal device to indicate that the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling, wherein the from Changing the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction, and a timer for processing RRC layer maintenance.
  • the cell changing device can be configured separately from the processor 1010.
  • the cell changing device can be configured as a chip connected to the processor 1010, and the functions of the cell changing device are implemented under the control of the processor 1010. .
  • the network node 1000 may also include: a transceiver 1040, an antenna 1050, etc.; the functions of the above components are similar to those of the existing technology and will not be described again here. It is worth noting that the network device 1000 does not necessarily include all components shown in Figure 10; in addition, the network node 1000 may also include components not shown in Figure 10, and reference can be made to the existing technology.
  • the terminal device changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling according to the L1 signaling and/or L2 signaling received from the source network node, where the change includes L1
  • At least one of a partial reset, an L2 partial reset, and a timer that handles RRC layer maintenance can provide an effective mechanism to implement a process of L1/L2-based cell change, and can reduce delay, signaling overhead, and interruption time.
  • An embodiment of the present application provides a communication system, including the terminal device according to Embodiment 6 and/or the network node according to Embodiment 7.
  • a communication system including the terminal device according to Embodiment 6 and/or the network node according to Embodiment 7.
  • the structure of the communication system can refer to Figure 1.
  • the communication system 100 includes a first network node 101 and a terminal device 102.
  • the terminal device 102 can be the same as the terminal device described in Embodiment 6, and/or , the first network node 101 may be the same as the network node described in Embodiment 7, and the repeated content will not be described again.
  • the above devices and methods of this application can be implemented by hardware, or can be implemented by hardware combined with software.
  • the present application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or component described above, or enables the logic component to implement the various methods described above or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, etc.
  • This application also involves storage media used to store the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, etc.
  • the methods/devices described in connection with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in FIG. 8 may correspond to each software module or each hardware module of the computer program flow.
  • These software modules can respectively correspond to the steps shown in Figure 5.
  • These hardware modules can be implemented by solidifying these software modules using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor.
  • the processor and storage media may be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or the large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in Figure 8 can be implemented as a general-purpose processor, a digital signal processor ( DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or any appropriate combination thereof.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to FIG. 8 can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, or multiple microprocessors. processor, one or more microprocessors coupled with DSP communications, or any other such configuration.
  • a device for cell changing the device is applied to terminal equipment, and the device includes:
  • a first receiving unit that receives L1 signaling and/or L2 signaling from the first network node
  • a first changing unit that changes from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance.
  • At least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction At least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction.
  • the processing of the timer for RRC layer maintenance includes: starting or restarting the timer for RRC layer maintenance, and/or stopping the timer for RRC layer maintenance.
  • the starting or restarting the timer maintained by the RRC layer includes starting or restarting a handover timer.
  • Stopping the timer maintained by the RRC layer includes at least one of the following actions:
  • For the first timer apply the value of the first timer or restart the first timer
  • the TA-related timer is not considered to have expired
  • a second receiving unit that receives configuration information of a group of cells from the first network node
  • restarting the first timer includes:
  • the first timer is a timer maintained by the MAC layer.
  • the value of the second timer is applied or the second timer is restarted.
  • a third receiving unit that receives configuration information of a group of cells from the first network node
  • restarting the second timer includes:
  • the second timer is a timer maintained by the RLC layer.
  • the sending PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the sending PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the sending PDCP entity will perform at least one of the following:
  • the receiving PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the receiving PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the receiving PDCP entity will continue the current ROCH.
  • a fourth receiving unit that receives network signaling from the first network node
  • a determining unit that determines, according to the network signaling, to perform at least one behavior of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • the terminal device resets the ROCH protocol.
  • the terminal device When the network command does not include an indication for ROCH reset, the terminal device does not reset the ROCH protocol or continues the current ROCH.
  • the sending PDCP entity of the terminal device resets the uplink ROCH protocol.
  • the sending PDCP entity of the terminal device does not reset the uplink ROCH protocol or continues the current uplink ROCH.
  • the receiving PDCP entity of the terminal device resets the downlink ROCH protocol.
  • the receiving PDCP entity of the terminal device does not reset the downlink ROCH protocol or continues the current downlink ROCH.
  • the sending PDCP entity of the terminal device resets the uplink EHC protocol.
  • the sending PDCP entity of the terminal device does not reset the uplink EHC protocol or continue the current uplink EHC.
  • the sending PDCP of the terminal device does not continue to discard UDC.
  • the sending PDCP entity of the terminal device continues to discard UDCs.
  • the terminal device When the network command includes a fifth indication for updating the encryption algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the encryption algorithm and key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same encryption algorithm and key as the source cell.
  • the terminal device When the network command includes a sixth indication for updating the integrity algorithm and the key, the terminal device sends PDCP and/or receives PDCP to update the integrity algorithm and the key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same integrity algorithm and key as the source cell.
  • the network signaling includes: at least one of RRC message, MAC CE and DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • a device for cell change is applied to a first network node, and the device includes:
  • a first sending unit that sends L1 signaling and/or L2 signaling to the terminal device to instruct the terminal device to change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction and a timer for processing RRC layer maintenance .
  • the second sending unit sends network signaling to the terminal device, where the network signaling instructs the terminal device to perform at least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • the indication for ROCH resetting is used to indicate resetting of the uplink ROCH and/or the downlink ROCH.
  • the indication for ROCH reset includes an indication
  • Said one indication is used to indicate the resetting of uplink ROCH and downlink ROCH, or,
  • the indication for ROCH reset includes a first indication and a second indication
  • the first indication is used to indicate the resetting of the uplink ROCH
  • the second indication is used to indicate resetting of the downlink ROCH.
  • the indication for EHC reset is used to indicate the reset of the uplink EHC protocol.
  • the network signaling includes: at least one of RRC message, MAC CE and DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • a terminal device comprising the device described in any one of appendices 1-40.
  • a network node comprising the device described in any one of appendices 41-53.
  • a communication system comprising the terminal device described in appendix 54 and/or the network node described in appendix 55.
  • a method for cell change the method is applied to terminal equipment, and the method includes:
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of L1 partial reset, L2 partial reset and a timer for processing RRC layer maintenance.
  • At least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction At least one of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction.
  • the processing of the timer for RRC layer maintenance includes: starting or restarting the timer for RRC layer maintenance, and/or stopping the timer for RRC layer maintenance.
  • the starting or restarting the timer maintained by the RRC layer includes starting or restarting a handover timer.
  • Stopping the timer maintained by the RRC layer includes at least one of the following actions:
  • For the first timer apply the value of the first timer or restart the first timer
  • the TA-related timer is not considered to have expired
  • restarting the first timer includes:
  • the first timer is a timer maintained by the MAC layer.
  • the value of the second timer is applied or the second timer is restarted.
  • restarting the second timer includes:
  • the second timer is a timer maintained by the RLC layer.
  • the sending PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the sending PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the sending PDCP entity will perform at least one of the following:
  • the receiving PDCP entity will continue to apply the same encryption algorithm and keys as the source cell, and/or the receiving PDCP entity will continue to apply the same integrity algorithm and keys as the source cell.
  • the receiving PDCP entity will continue the current ROCH.
  • the network signaling it is determined to perform at least one behavior of partial MAC entity reset, partial RLC reconstruction and partial PDCP reconstruction when the cell changes.
  • the terminal device resets the ROCH protocol.
  • the terminal device When the network command does not include an indication for ROCH reset, the terminal device does not reset the ROCH protocol or continues the current ROCH.
  • the sending PDCP entity of the terminal device resets the uplink ROCH protocol.
  • the sending PDCP entity of the terminal device does not reset the uplink ROCH protocol or continues the current uplink ROCH.
  • the receiving PDCP entity of the terminal device resets the downlink ROCH protocol.
  • the receiving PDCP entity of the terminal device does not reset the downlink ROCH protocol or continues the current downlink ROCH.
  • the sending PDCP entity of the terminal device resets the uplink EHC protocol.
  • the sending PDCP entity of the terminal device does not reset the uplink EHC protocol or continue the current uplink EHC.
  • the sending PDCP of the terminal device does not continue to discard UDC.
  • the sending PDCP entity of the terminal device continues to discard UDCs.
  • the terminal device When the network command includes a fifth indication for updating the encryption algorithm and key, the terminal device sends PDCP and/or receives PDCP to update the encryption algorithm and key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same encryption algorithm and key as the source cell.
  • the terminal device When the network command includes a sixth indication for updating the integrity algorithm and the key, the terminal device sends PDCP and/or receives PDCP to update the integrity algorithm and the key.
  • the sending PDCP and/or receiving PDCP of the terminal device continues to apply the same integrity algorithm and key as the source cell.
  • the network signaling includes: at least one of RRC message, MAC CE and DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.
  • a method for cell change the method is applied to the first network node, the method includes:
  • the change from the serving cell to the cell indicated by the L2 signaling and/or L1 signaling includes: at least one of partial MAC entity reset, partial RLC reconstruction, partial PDCP reconstruction and a timer for processing RRC layer maintenance .
  • Network signaling is sent to the terminal device, and the network signaling instructs the terminal device to perform at least one behavior of partial MAC entity reset, partial RLC reconstruction, and partial PDCP reconstruction when the cell changes.
  • the indication for ROCH resetting is used to indicate resetting of the uplink ROCH and/or the downlink ROCH.
  • the indication for ROCH reset includes an indication
  • Said one indication is used to indicate the resetting of uplink ROCH and downlink ROCH, or,
  • the indication for ROCH reset includes a first indication and a second indication
  • the first indication is used to indicate the resetting of the uplink ROCH
  • the second indication is used to indicate resetting of the downlink ROCH.
  • the indication for EHC reset is used to indicate the reset of the uplink EHC protocol.
  • the network signaling includes: at least one of RRC message, MAC CE and DCI.
  • the granularity of the network signaling is: per terminal device, per cell, per cell group, per bearer or per HAQR process.
  • the network signaling and/or the indication included in the network signaling is applicable to the terminal device.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell.
  • the network signaling and/or the indication included in the network signaling is applicable to the cell group.
  • the network signaling and/or the indication included in the network signaling is applicable to the bearer.
  • the network signaling and/or the indication included in the network signaling is applicable to the HAQR process.

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Abstract

一种小区改变的方法及装置。所述方法包括:从第一网络节点接收L1信令和/或L2信令;以及从服务小区改变到所述L2信令和/或L1信令指示的小区,其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。

Description

小区改变的方法及装置 技术领域
本申请涉及通信领域。
背景技术
网络控制的移动性适用于连接态终端,可以分为2种移动性:小区级移动性和波束级移动性。
小区级移动性要求由显式RRC信令来触发,即切换。RRC触发的切换机制要求终端(UE)至少重置MAC实体并重建RLC。支持有和没有分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)实体重建的RRC管理的切换。对于使用RLC AM模式的数据无线承载(Data Radio Bearers,DRBs),PDCP可以与安全密钥更新一起重建,或发起没有密钥更新的数据恢复过程。对于使用RLC UM模式的DRBs,PDCP可以与安全密钥更新一起重建,或没有密钥更新保持不变。对于信令无线承载(Signalling radio bearers,SRBs),PDCP可以没有密钥更新保持不变、丢弃存储的PDCP PDUs/SDUs,或与安全密钥更新一起重建。
应该注意,上面对技术背景的介绍只是为了方便,对本申请的技术方案进行清楚、完整的说明,并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
当终端从一个小区的覆盖区域移动到另一个小区的覆盖区域,在某一点需要执行服务小区改变。当前,服务小区改变由L3测量触发并由RRC信令完成,为主小区PCell和主辅小区PSCell改变触发的同步重配置(Reconfiguration with Synchronisation),以及适用时辅小区SCells的释放增加。
小区间移动性可以包括gNB-DU内移动性、gNB-CU内gNB-DU间移动性以及gNB-CU间移动性。
发明人发现,当终端从一个小区的覆盖区域移动到另一个小区的覆盖区域时,在 某一点需要执行服务小区改变。当前,在各种场景下,服务小区改变由L3测量触发并由RRC信令完成,涉及完整的L2(和L1)重置,因此导致比波束级别移动性更长的时延、更大的信令开销和更长的中断时间。
关于完整的L2重置:
关于PDCP实体重建:
当上层请求PDCP重建时,发送PDCP实体将会:
-对于UM DRBs和AM DRBs,如果未配置drb-ContinueROHC,重置上行的ROHC协议,并以RFC 3095和RFC 4815里定义的U-mode的IR state开始;
-对于UM DRBs和AM DRBs,如果未配置drb-ContinueEHC-UL,重置上行的EHC协议;
-对于AM DRBs,如果未配置drb-ContinueUDC,重置UDC压缩buffer为全0并预填dictionary;
-对于SRBs和UM DRBs,设置TX_NEXT为初始值;
-对于SRBs,丢弃所有存储的PDCP SDUs和PDCP PDUs;
-PDCP实体重建期间,应用上层提供的加密算法和密钥;
-PDCP实体重建期间,应用上层提供的完整性算法和密钥;
-对于UM DRBs,对于每个已经关联了PDCP SN但相应的PDU之前尚未递交给低层的每个PDCP SDU,以及对于Uu接口的PDCP实体挂起的AM DRBs,从低层尚未确认成功传递PDCP Data PDU的第一个PDCP SDU开始,对于每个已经关联PDCP SN的PDCP SDU:认为PDCP SDUs是从高层收到的;PDCP重建前,不重启discardTimer,按照PDCP SDU关联的COUNT值的升序,执行PDCP SDUs的传输;
-对于其PDCP实体未挂起的AM DRBs,从低层尚未确认相应的PDCP Data PDU成功传递的第一个PDCP SDU开始,PDCP实体重建前,按照PDCP SDU关联的COUNT值的升序执行所有已经关联了PDCP SNs的PDCP SDUs的重传或传输,如下定义:
-使用ROHC和/或使用EHC执行PDCP SDU的头压缩;
-如果配置了drb-ContinueUDC,且之前PDCP SDUs已经被压缩: 提交之前为完整性保护和加密功能压缩的PDCP SDU;否则,执行PDCP SDU的上行数据压缩并将PDCP SDU提交给完整性保护和加密功能;
-使用这个PDCP SDU关联的COUNT值执行这个PDCP SDU的完整性保护和加密;
-向低层递交生成的PDCP Data PDU。
当上层请求PDCP重建时,接收PDCP实体将会:
-处理从低层收到的低层重建造成的PDCP Data PDUs;
-对于SRBs,丢弃所有存储的PDCP SDUs和PDCP PDUs;
-对于SRBs,UM DRBs和UM MRBs,如果t-Reordering正在运行:停止并重置t-Reordering;对于UM DRBs和UM MRBs,头解压缩后,向高层按关联的COUNT值的升序递交所有存储的PDCP SDUs;
-对于Uu口上的AM DRBs和AM MRBs,如果未配置drb-ContinueROHC,使用ROHC协议为所有存储的PDCP SDUs执行头解压缩;
-对于PC5接口上的AM DRBs,使用ROHC协议为所有存储的PDCP IP SDUs执行头解压缩;
-对于Uu口上的AM DRBs和AM MRBs,如果未配置drb-ContinueEHC-DL,使用EHC为所有存储的PDCP SDUs执行头解压缩;
-对于UM DRBs,AM DRBs,UM MRBs和AM MRBs,如果未配置drb-ContinueROHC,重置下行的ROHC协议,并以RFC 3095和RFC 4815里定义的U-mode的NC state开始;
-对于UM DRBs,AM DRBs,UM MRBs和AM MRBs,如果未配置drb-ContinueEHC-DL,重置下行的EHC协议;
-对于SRBs,UM DRBs和UM MRBs,设置RX_NEXT和RX_DELIV为初始值;
-PDCP实体重建期间,应用上层提供的加密算法和密钥;
-PDCP实体重建期间,应用上层提供的完整性算法和密钥;
执行完以上过程后,终端设备将会进行数据传递。
关于PDCP数据恢复:
对于AM DRBs,当上层请求一个无线承载的PDCP数据恢复,发送PDCP实体将会按照关联的COUNT值的升序执行之前提交给重建的或释放的AM RLC实体、低层尚未确认成功传递的所有PDCP Data PDUs的重传。
执行完以上过程后,终端设备将会进行数据传递。
关于RLC实体重建:
当上层请求一个RLC实体重建时,终端将会丢弃所有RLC SDUs,RLC SDU分段和RLC PDUs,停止并重置所有定时器,重置所有state变量为其初始值。
关于MAC重置:
当上层请求RLC实体的重置时,MAC实体将会:
1>如果MAC reset不是由于SCG deactivation:
2>初始化每个逻辑信道的Bj为0;
1>如果RRC配置了Sidelink resource allocation mode 1,初始化每个逻辑信道的SBj为0;
1>如果上层指示SCG deactivation且为这个去激活的SCG配置了bfd-and-RLM with value true:
2>停止所有定时器(if running),除了PSCell关联的beamFailureDetectionTimer和timeAlignmentTimers.
1>否则:
2>停止所有定时器(if running),除了MBS broadcast DRX timers;
2>认为所有timeAlignmentTimers,inactivePosSRS-TimeAlignmentTimer,和cg-SDT-TimeAlignmentTimer,如果配置,超时并执行相应的actions;
1>设置所有上行HARQ进程的NDIs为0;
1>设置所有HARQ process IDs的NDIs为0以监听Sidelink resource allocation mode 1里的PDCCH;
1>停止正在进行的随机接入过程,if any;
1>丢弃显式指示的4-step RA type和2-step RA type的contention-free Random Access Resources,if any;
1>清空Msg3 buffer;
1>清空MSGA buffer;
1>取消触发的Scheduling Request procedure,if any;
1>取消触发的Buffer Status Reporting procedure,if any;
1>取消触发的Power Headroom Reporting procedure,if any;
1>取消触发的consistent LBT failure,if any;
1>取消触发的BFR,if any;
1>取消触发的Sidelink Buffer Status Reporting procedure,if any;
1>取消触发的Pre-emptive Buffer Status Reporting procedure,if any;
1>取消触发的Timing Advance Reporting procedure,if any;
1>取消触发的Recommended bit rate query procedure,if any;
1>取消触发的Configured uplink grant confirmation,if any;
1>取消触发的configured sidelink grant confirmation,if any;
1>取消触发的Desired Guard Symbol query,if any;
1>取消触发的Positioning Measurement Gap Activation/Deactivation Request procedure,if any;
1>取消触发的SDT procedure,if any;
1>清空所有下行HARQ进程的soft buffers,除了被用于MBS广播的DL HARQ process的;
1>对于每个DL HARQ process,认为一个TB下一个收到的传输为the very first transmission;
1>释放Temporary C-RNTI,if any;
1>如果上层指示SCG deactivation且未配置bfd-and-RLM with value true;或
1>如果MAC reset不是由于SCG deactivation:
2>重置所有BFI_COUNTERs;
1>重置所有LBT_COUNTERs.
关于RRC定时器:
定时器T304/T310/T312/T390的操作涉及小区改变,具体如下:
Figure PCTCN2022110980-appb-000001
Figure PCTCN2022110980-appb-000002
Figure PCTCN2022110980-appb-000003
Figure PCTCN2022110980-appb-000004
现有机制中,服务小区改变涉及以上完整的L2重置,导致比波束级别移动性更长的时延、更大的信令开销和更长的中断时间。为了解决上述问题中的一个或多个,本申请实施例提供了一种小区改变的方法及装置。
根据本申请实施例的第一方面,提供一种小区改变的装置,所述装置设置于终端设备,所述装置包括:第一接收单元,其从第一网络节点接收L1信令和/或L2信令;以及第一改变单元,其从服务小区改变到所述L2信令和/或L1信令指示的小区,其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
根据本申请实施例的第二方面,提供一种小区改变的装置,所述装置应用于第一 网络节点,所述装置包括:第一发送单元,其向终端设备发送L1信令和/或L2信令,以指示所述终端设备从服务小区改变到所述L2信令和/或L1信令指示的小区,其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
根据本申请实施例的第三方面,提供一种终端设备,所述终端设备包括根据本申请实施例的第一方面所述的装置。
根据本申请实施例的第四方面,提供一种网络节点,所述网络节点包括根据本申请实施例的第二方面所述的装置。
根据本申请实施例的第五方面,提供一种通信系统,所述通信系统包括根据本申请实施例的第三方面所述的终端设备和/或根据本申请实施例的第四方面所述的网络节点。
根据本申请实施例的第六方面,提供一种小区改变的方法,所述方法应用于终端设备,所述方法包括:从第一网络节点接收L1信令和/或L2信令;以及从服务小区改变到所述L2信令和/或L1信令指示的小区,其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
根据本申请实施例的第七方面,提供一种小区改变的方法,所述方法应用于第一网络节点,所述方法包括:向终端设备发送L1信令和/或L2信令,以指示所述终端设备从服务小区改变到所述L2信令和/或L1信令指示的小区,其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
根据本申请实施例的第八方面,提供一种计算机可读程序,其中当在小区改变的装置或终端设备中执行所述程序时,所述程序使得所述小区改变的装置或终端设备执行本申请实施例的第六方面所述的小区改变的方法。
根据本申请实施例的第九方面,提供一种存储有计算机可读程序的存储介质,其中所述计算机可读程序使得小区改变的装置或终端设备执行本申请实施例的第六方面所述的小区改变的方法。
根据本申请实施例的第十方面,提供一种计算机可读程序,其中当在小区改变的装置或网络节点中执行所述程序时,所述程序使得所述小区改变的装置或网络节点执 行本申请实施例的第七方面所述的小区改变的方法。
根据本申请实施例的第十一方面,提供一种存储有计算机可读程序的存储介质,其中所述计算机可读程序使得小区改变的装置或网络设备执行本申请实施例的第七方面所述的小区改变的方法。
本申请实施例的有益效果之一在于:终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
参照后文的说明和附图,详细公开了本申请的特定实施方式,指明了本申请的原理可以被采用的方式。应该理解,本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内,本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用,与其它实施方式中的特征相组合,或替代其它实施方式中的特征。
应该强调,术语“包括/包含/具有”在本文使用时指特征、整件、步骤或组件的存在,但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外,在附图中,类似的标号表示几个附图中对应的部件,并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本申请实施例的进一步的理解,其构成了说明书的一部分,用于例示本申请的实施方式,并与文字描述一起来阐释本申请的原理。显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。在附图中:
图1是本申请实施例的通信系统的一示意图;
图2是本申请实施例的NG-RAN的部署场景的一示意图;
图3是本申请实施例的IAB部署场景的一示意图;
图4是本申请实施例1的小区改变的方法的一示意图;
图5是本申请实施例2的小区改变的方法的一示意图;
图6是本申请实施例3的小区改变的方法的一示意图;
图7是本申请实施例4的小区改变的装置的一示意图;
图8是本申请实施例5的小区改变的装置的一示意图;
图9是本发明实施例6的终端设备的系统构成的一示意框图;
图10是本发明实施例7的网络节点的系统构成的一示意框图。
具体实施方式
参照附图,通过下面的说明书,本申请的前述以及其它特征将变得明显。在说明书和附图中,具体公开了本申请的特定实施方式,其表明了其中可以采用本申请的原则的部分实施方式,应了解的是,本申请不限于所描述的实施方式,相反,本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中,术语“第一”、“第二”等用于对不同元素从称谓上进行区分,但并不表示这些元素的空间排列或时间顺序等,这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在,但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中,单数形式“一”、“该”等包括复数形式,应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义;此外术语“所述”应理解为既包括单数形式也包括复数形式,除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”,术语“基于”应理解为“至少部分基于……”,除非上下文另外明确指出。
在本申请实施例中,术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络,例如长期演进(LTE,Long Term Evolution)、增强的长期演进(LTE-A,LTE-Advanced)、宽带码分多址接入(WCDMA,Wideband Code Division Multiple Access)、高速报文接入(HSPA,High-Speed Packet Access)等等。
并且,通信系统中设备之间的通信可以根据任意阶段的通信协议进行,例如可以包括但不限于如下通信协议:1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G 以及未来的5G、新无线(NR,New Radio)等等,和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中,术语“网络设备”或“网络节点”例如是指通信系统中将用户设备接入通信网络并为该用户设备提供服务的设备。网络设备或网络节点可以包括但不限于如下设备:IAB架构下的“节点(node)”和/或“宿主(donor)”、基站(BS,Base Station)、接入点(AP、Access Point)、发送接收点(TRP,Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC,Radio Network Controller)、基站控制器(BSC,Base Station Controller)等等。
其中,基站可以包括但不限于:节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB),等等,此外还可包括远端无线头(RRH,Remote Radio Head)、远端无线单元(RRU,Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能,每个基站可以对特定的地理区域提供通信覆盖,例如5G基站gNB可以包括一个gNB CU和一个或多个gNB DU,其中CU/DU是具有gNB部分功能的gNB的一个逻辑节点。术语“小区”可以指的是基站和/或其覆盖区域,这取决于使用该术语的上下文。一个gNB-DU支持一个或多个小区,一个小区仅由一个gNB-DU支持。
在本申请实施例中,术语“用户设备”(UE,User Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备,也可以称为“终端设备”(TE,Terminal Equipment)。终端设备可以是固定的或移动的,并且也可以称为移动台(MS,Mobile Station)、终端、用户台(SS,Subscriber Station)、接入终端(AT,Access Terminal)、站,等等。例如,IAB架构下的由IAB节点或IAB宿主服务的终端设备。
其中,终端设备可以包括但不限于如下设备:蜂窝电话(Cellular Phone)、个人数字助理(PDA,Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机,等等。
再例如,在物联网(IoT,Internet of Things)等场景下,终端设备还可以是进行监控或测量的机器或装置,例如可以包括但不限于:机器类通信(MTC,Machine Type Communication)终端、车载通信终端、设备到设备(D2D,Device to Device)终端、 机器到机器(M2M,Machine to Machine)终端,等等。
在本申请实施例中,“当……时”、“在……情况下”、“对于……的情况”以及“如果……”都表示基于某个或某些条件或状态等,另外,这些表述方式可以互相替换。
以下通过示例对本申请实施例的场景进行说明,但本申请不限于此。
图1是本申请实施例的通信系统的一示意图,其示意性说明了以终端设备和网络设备为例的情况,如图1所示,通信系统100包括第一网络节点101和终端设备102。
例如,第一网络节点101是gNB,或包括一个gNB-CU和连接的一个或多个gNB-DU(s);
在IAB网络里,例如,第一网络节点101可以是IAB-donor或IAB节点,或包括一个IAB-donor-CU和连接的一个或多个IAB-donor-DU(s),或包括一个IAB-donor-CU和通过其他节点连接的一个或多个IAB-node-DU(s)。
在一些实施例中,在终端设备102进行小区改变时,第一网络节点101为源网络节点,同时作为目标网络节点;或者如图1所示,通信系统100还可以包括第二网络节点103,这种情况下,在终端设备102进行小区改变时,第一网络节点101为源网络节点,第二网络节点103为目标网络节点。
为简单起见,图1仅以一个终端设备为例进行说明。
在一些实施例中,对于gNB间小区改变,即gNB-CU间小区改变,第一网络节点101和第二网络节点103例如为NR gNB。
对于gNB-DU间小区改变,第一网络节点101和第二网络节点103是相同gNB-CU内不同的gNB-DU;
对于gNB-DU内小区改变,第一网络节点101和第二网络节点103是相同gNB-DU内不同TRP或repeater等;或者,第一网络节点101既是源网络节点又是目标网络节点,源小区和目标小区都在第一网络节点101上,这种情况下,本申请实施例的通信系统100包括第一网络节点101和终端设备102。
在一些实施例中,图1表示IAB网络,其中终端设备102可以是UE也可以是IAB-MT:
对于IAB-donor-CU间小区改变,第一网络节点101和第二网络节点103是不同IAB-donor-CU,即在终端设备102需要进行小区改变时,第一网络节点101是源IAB-donor-CU,第二网络节点103是目标IAB-donor-CU;
对于IAB-donor-CU内IAB-donor-DU间小区改变,第一网络节点101和第二网络节点103是同一IAB-donor-CU内的不同IAB-donor-DU,即在终端设备102需要进行小区改变时,第一网络节点101是源IAB-donor-DU,第二网络节点103是目标IAB-donor-DU;
对于IAB-node间小区改变,本申请实施例的通信系统100包括第一网络节点101和终端设备102,在终端设备102需要进行小区改变时,第一网络节点101是源IAB-donor-DU,也是目标IAB-donor-DU。
在本申请实施例中,第一网络节点101和/或第二网络节点103与终端设备102之间可以进行现有的业务或者未来可实施的业务。例如,这些业务包括但不限于:增强的移动宽带(eMBB,enhanced Mobile Broadband)、大规模机器类型通信(mMTC,massive Machine Type Communication)和高可靠低时延通信(URLLC,Ultra-Reliable and Low-Latency Communication),等等。
本申请实施例的小区改变的方法可以适用于各种部署场景,例如NG-RAN的部署场景、IAB部署场景等。
图2是本申请实施例的NG-RAN的部署场景的一示意图。如图2所示,NG-RAN包括一组通过NG接口连接到5GC的gNBs。gNBs间可以通过Xn接口互联。一个gNB可以包括一个gNB-CU和一个或多个gNB-DU(s),一个gNB-CU和一个gNB-DU间通过F1接口连接,一个gNB-DU仅能连接到一个gNB-CU。
图3是本申请实施例的IAB部署场景的一示意图。如图3所示,NG-RAN通过IAB-node无线连接到能够为IAB-nodes服务的gNB,被称为IAB-donor来支持IAB。IAB-donor包括一个IAB-donor-CU和一个或多个IAB-donor-DU(s)。
除非特别说明,所有为gNB-DU定义的功能都同样适用于IAB-DU和IAB-donor-DU,所有为gNB-CU定义的功能同样适用于IAB-donor-CU,所有为UE定义的功能都同样适用于IAB-MT。
下面结合附图对本申请实施例的各种实施方式进行说明。这些实施方式只是示例性的,不是对本申请的限制。
实施例1
本申请实施例提供了一种小区改变的方法,该方法应用于终端设备。例如,该方法应用于图1中的终端设备102。
图4是本申请实施例1的小区改变的方法的一示意图。如图4所示,该方法包括:
步骤401:从该第一网络节点接收L1信令和/或L2信令;以及
步骤402:从服务小区改变到该L2信令和/或L1信令指示的小区,
其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
这样,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
在一些实施例中,小区改变(switch/change)包括:服务小区改变、特殊小区改变以及主小区改变(切换)中的至少一个。
在一些实施例中,小区改变中的源小区和目标小区是同步或异步的。
在一些实施例中,小区改变中的源小区和目标小区是同频或异频的。
在一些实施例中,小区改变中的源小区和/或目标小区工作在FR1或FR2上。
在一些实施例中,第一网络节点是源网络节点,即源小区所属的网络节点。
在一些实施例中,L1是指层1,例如包括物理层;
L2是指层2,例如包括MAC层或MAC子层、PDCP层或PDCP子层以及RLC层或RLC子层;
L3是指层3,例如包括RRC层。
在步骤401中,终端设备从该第一网络节点接收L1信令和/或L2信令,在步骤502中,终端设备从当前的服务小区改变到该L2信令和/或L1信令指示的小区。
例如,终端设备从该第一网络节点接收L1信令,并从当前的服务小区改变到该L1信令指示的小区;
又例如,终端设备从该第一网络节点接收L2信令,并从当前的服务小区改变到该L2信令指示的小区;
又例如,终端设备从该第一网络节点接收L2信令和L1信令,其中L2信令包括多个指示的小区,L1信令指示在这多个小区里的一个小区,终端设备从当前的服务小区改变到该L1信令指示的小区。
在一些实施例中,该L1信令是下行控制信息(DCI)。
在一些实施例中,该L2信令是MAC CE。
在一些实施例中,该L1信令指示以下至少之一:
小区信息;
TCI状态标识(TCI state ID),例如,该L1信令重用或基于现有的TCI状态标识(TCI state ID)更新的DCI;
TA信息;
目标小区为该终端设备分配的UE标识,例如C-RNTI;
该L1信令的HARQ反馈信息;以及
调度信息,例如,包括目标小区里的UL grant和/或DL assignment。
在一些实施例中,该L2信令指示以下至少之一:
小区信息;
TCI状态标识(TCI state ID),例如,该L2信令重用或基于现有的TCI状态标识(TCI state ID)更新的MAC CE;
TA信息;
目标小区为该终端设备分配的UE标识,例如C-RNTI;
该L2信令的HARQ反馈信息;以及
调度信息,例如,包括目标小区里的UL grant和/或DL assignment。
例如,终端设备从该第一网络节点接收L2信令和L1信令,并从当前的服务小区改变到该L2信令和L1信令指示的小区,其中L2信令和L1信令指示同一个小区的不同信息,例如L1信令指示小区的TCI state ID,L2信令指示小区的TA信息。
在一些实施例中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
在一些实施例中,L1部分重置是指执行L1重置中的一部分,L2部分重置是指执行L2重置中的一部分。
在一些实施例中,该L2部分重置包括:部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个。
在一些实施例中,该处理RRC层维护的定时器包括:启动或重启该RRC层维护的定时器,和/或,停止该RRC层维护的定时器。
在一些实施例中,该启动或重启该RRC层维护的定时器包括:启动或重启切换 定时器,例如T304。
在一些实施例中,该停止该RRC层维护的定时器包括以下行为中的至少一个:
停止无线链路监听相关的定时器,例如所在组的T310或所在组的T312;
停止失败上报相关的定时器,例如T316;以及
停止接入尝试相关的定时器,例如T390。
在一些实施例中,该部分MAC实体重置,包括以下行为中的至少一个:
对于第一定时器,应用该第一定时器的值或重启该第一定时器;
不认为TA(time alignment)相关定时器超时;
不取消触发的BSR过程;以及
不清空下行HARQ进程的软缓存(soft buffer)。
在一些实施例中,如图4所示,该方法还包括:
步骤403:从该第一网络节点接收一组小区的配置信息,当该配置信息包括该第一定时器的值时,应用该值;和/或,当该配置信息不包括该第一定时器的值时,重启该第一定时器。
例如,这组小区是进行基于L1信令和/或L2信令的小区改变过程的候选小区;
在一些实施例中,该重启该第一定时器,包括:重启该第一定时器并使用之前的值。
也就是说,如果指示的配置信息包括第一定时器的值,终端设备应用新的值;否则,重启第一定时器,终端设备使用之前的值,即执行切换前服务小区的配置的值。
例如,该第一定时器是MAC层维护的定时器。
在一些实施例中,该部分RLC重建,包括以下行为中的至少一个:
不丢弃RLC SDUs、RLC SDU分段和RLC PDUs;以及
对于第二定时器,应用该第二定时器的值或重启该第二定时器。
在一些实施例中,如图4所示,该方法还包括:
步骤404:从该第一网络节点接收一组小区的配置信息,当该配置信息包括该第二定时器的值时,应用该值;和/或,当该配置信息不包括该第二定时器的值时,重启该第二定时器。
例如,这组小区是进行基于L1信令和/或L2信令的小区改变过程的候选小区。
在一些实施例中,步骤404和步骤403是可选步骤,另外,步骤404和步骤403 可以合并执行。
在一些实施例中,该重启该第二定时器,包括:重启该第二定时器并使用之前的值。
例如,该第二定时器是RLC层维护的定时器。
在一些实施例中,该部分PDCP重建,包括以下行为中的至少一个:没有密钥更新的PDCP重建;以及不进行数据恢复。
在一些实施例中,该没有密钥更新的PDCP重建,包括:
发送PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,发送PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该没有密钥更新的PDCP重建,还包括:
该发送PDCP实体将会执行以下至少之一:
对于UM DRB和/或AM DRB,继续当前ROCH;
对于UM DRB和/或AM DRB,继续当前EHC;
对于AM DRB,继续丢弃UDC。
在一些实施例中,该没有密钥更新的PDCP重建,包括:
接收PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,接收PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该没有密钥更新的PDCP重建,还包括:
对于UM DRB和/或AM DRB,该接收PDCP实体将会继续当前ROCH。
在一些实施例中,如图4所示,该方法还包括:
步骤405:从该第一网络节点接收网络信令;
步骤406:根据该网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
在一些实施例中,步骤405和步骤406为可选步骤,另外,步骤405和步骤406与步骤403和步骤404的执行顺序不进行限制,也可以合并执行。
在一些实施例中,当该网络命令包括用于ROCH重置的指示时,该终端设备重置ROCH协议。也就是说,用于ROCH重置的指示用于指示终端设备重置ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的指示时,该终端设备 不重置ROCH协议或继续当前ROCH。
在一些实施例中,当该网络命令包括用于ROCH重置的第一指示时,该终端设备的发送PDCP实体重置上行ROCH协议。也就是说,用于ROCH重置的第一指示用于指示终端设备的发送PDCP实体重置上行ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的第一指示时,该终端设备的发送PDCP实体不重置上行ROCH协议或继续当前上行ROCH。
在一些实施例中,当该网络命令包括用于ROCH重置的第二指示时,该终端设备的接收PDCP实体重置下行ROCH协议。也就是说,用于ROCH重置的第二指示用于指示终端设备的接收PDCP实体重置下行ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的第二指示时,该终端设备的接收PDCP实体不重置下行ROCH协议或继续当前下行ROCH。
在一些实施例中,当该网络命令包括用于EHC重置的第三指示时,该终端设备的发送PDCP实体重置上行EHC协议。也就是说,用于EHC重置的第三指示用于指示端设备的发送PDCP实体重置上行EHC协议。
在一些实施例中,当该网络命令不包括用于EHC重置的第三指示时,该终端设备的发送PDCP实体不重置上行EHC协议或继续当前上行EHC。
在一些实施例中,当该网络命令包括用于停止UDC丢弃的第四指示时,该终端设备的发送PDCP不继续丢弃UDC。也就是说,用于停止UDC丢弃的第四指示用于指示终端设备的发送PDCP不继续丢弃UDC。
在一些实施例中,当该网络命令不包括用于停止UDC丢弃的第四指示时,该终端设备的发送PDCP实体继续丢弃UDC。
在一些实施例中,当该网络命令包括用于更新加密算法和密钥的第五指示时,该终端设备的发送PDCP和/或接收PDCP更新加密算法和密钥。也就是说,用于更新加密算法和密钥的第五指示用于指示终端设备的发送PDCP和/或接收PDCP更新加密算法和密钥。
在一些实施例中,当该网络命令不包括用于更新加密算法和密钥的第五指示时,该终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的加密算法和密钥。
在一些实施例中,当该网络命令包括用于更新完整性算法和密钥的第六指示时,该终端设备的发送PDCP和/或接收PDCP更新完整性算法和密钥。也就是说,更新 完整性算法和密钥的第六指示用于指示终端设备的发送PDCP和/或接收PDCP更新完整性算法和密钥。
在一些实施例中,当该网络命令不包括用于更新完整性算法和密钥的第六指示时,该终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
在一些实施例中,该网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
例如,该网络信令的粒度为每(per)终端设备,包括:该网络信令和/或该网络信令包括的指示适用于该终端设备。
例如,该网络信令的粒度为每小区,包括:该网络信令和/或该网络信令包括的指示适用于该小区。
例如,该网络信令的粒度为每小区组,包括:该网络信令和/或该网络信令包括的指示适用于该小区组。
例如,该网络信令的粒度为每承载,包括:该网络信令和/或该网络信令包括的指示适用于该承载。
例如,该网络信令的粒度为每HAQR过程,包括:该网络信令和/或该网络信令包括的指示适用于该HAQR过程。
以下结合定时器的操作,对本申请实施例的小区改变的方法进行示例性的说明。
(1)定时器T304的操作
对于定时器T304,定时器启动如下所示:
Figure PCTCN2022110980-appb-000005
定时器停止如下所示:
Figure PCTCN2022110980-appb-000006
在一些实施例中,当收到L1信令和/或L2信令时,或者当RRC收到来自低层的指示,或者当特殊小区改变时,启动相应SpCell的定时器T304,可选地,其定时器值设置为网络配置的值;其中,低层的指示可以指示以下至少之一:服务小区改变,定时器启动和切换。其,L1信令和/或L2信令或低层的指示关联了MCG或SCG的特殊小区。
在一些实施例中,当终端设备成功完成从服务小区改变到指示的小区时,停止这个小区组的定时器T304。
(2)定时器T310的操作
对于定时器T310,定时器停止如下:
Figure PCTCN2022110980-appb-000007
在一些实施例中,当收到L1信令和/或L2信令时,或者当RRC收到来自低层的指示,或者当特殊小区改变时,停止源SpCell的定时器T310,如果正在运行;其中,低层的指示可以指示以下至少之一:服务小区改变,定时器停止,切换。其中,L1信令和/或L2信令或低层的指示关联了MCG或SCG的特殊小区。
(3)定时器T312的操作
对于定时器T312,定时器停止如下:
Figure PCTCN2022110980-appb-000008
在一些实施例中,当收到L1信令和/或L2信令时,或者当RRC收到来自低层的指示,或者当特殊小区改变时,停止相应SpCell的定时器T312,如果正在运行;其中,低层的指示可以指示以下至少之一:服务小区改变,定时器停止,切换。
(4)定时器T350和/或T390的操作
对于定时器T390和/或T390,定时器停止如下:
Figure PCTCN2022110980-appb-000009
在一些实施例中,对于T390:当收到L1信令和/或L2信令时,或者当RRC收到来自低层的指示时,如果T390正在运行,停止所有access categories的定时器T390; 其中,低层的指示可以指示以下至少之一:服务小区改变,定时器停止,切换。其中,L1信令和/或L2信令或低层的指示关联了MCG的特殊小区。
在一些实施例中,对于T350:当收到L1信令和/或L2信令时,或者当RRC收到来自低层的指示时,如果T350正在运行,停止定时器T350;其中,低层的指示可以指示以下至少之一:服务小区改变,定时器停止,切换。其中,L1信令和/或L2信令或低层的指示关联了MCG的特殊小区。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例2
本申请实施例提供了一种小区改变的方法,其与实施例1所述的应用于终端设备的小区改变的方法相对应,相同或对应的内容可以参考实施例1中的记载。
该方法应用于第一网络节点和/或第一网络节点连接的一个网络节点或网络单元,例如,该方法应用于图1中的第一网络节点101。
图5是本申请实施例2的小区改变的方法的一示意图。如图5所示,该方法包括:
步骤501:向终端设备发送L1信令和/或L2信令,以指示该终端设备从服务小区改变到该L2信令和/或L1信令指示的小区,
其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
在一些实施例中,如图5所示,该方法还包括:
步骤502:向该终端设备发送网络信令,该网络信令指示该终端设备在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
在一些实施例中,步骤502为可选步骤。
在一些实施例中,该网络信令包括以下至少之一:
用于ROCH重置的指示,
用于EHC重置的指示,
用于停止UDC丢弃的指示,
用于更新加密算法和密钥的指示;以及
用于更新完整性算法和密钥的指示。
例如,该用于ROCH重置的指示用于指示上行ROCH和/或下行ROCH的重置。
在一些实施例中,该用于ROCH重置的指示包括一个指示,该一个指示用于指示上行ROCH和下行ROCH的重置;
在一些实施例中,该用于ROCH重置的指示包括第一指示和第二指示,该第一指示用于指示上行ROCH的重置,该第二指示用于指示下行ROCH的重置。
在一些实施例中,该用于EHC重置的指示用于指示上行EHC协议的重置。
在一些实施例中,该网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
在一些实施例中,该网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
例如,该网络信令的粒度为每(per)终端设备,包括:该网络信令和/或该网络信令包括的指示适用于该终端设备。
例如,该网络信令的粒度为每小区,包括:该网络信令和/或该网络信令包括的指示适用于该小区。
例如,该网络信令的粒度为每小区组,包括:该网络信令和/或该网络信令包括的指示适用于该小区组。
例如,该网络信令的粒度为每承载,包括:该网络信令和/或该网络信令包括的指示适用于该承载。
例如,该网络信令的粒度为每HAQR过程,包括:该网络信令和/或该网络信令包括的指示适用于该HAQR过程。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例3
本申请实施例提供了一种小区改变的方法,该方法应用于终端设备和第一网络节点,其对应于实施例1所述的应用于终端设备的小区改变的方法和实施例2所述的应 用于第一网络节点的小区改变的方法,相同的内容不再重复说明。
图6是本申请实施例3的小区改变的方法的一示意图,该方法应用于终端设备和第一网络节点。如图6所示,该方法包括:
步骤601:终端设备向第一网络节点发送测量结果;
步骤602:从服务小区改变到该L2信令和/或L1信令指示的小区,
其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
在一些实施例中,如图6所示,该方法还包括:
步骤603:第一网络节点向终端设备发送网络信令;
步骤604:终端设备根据该网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
在一些实施例中,步骤603和步骤604为可选步骤。
在本申请实施例中,步骤601-604的具体实施可以参照实施例1和实施例2中的记载,此处不再重复说明。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例4
本申请实施例提供了一种小区改变的装置,该装置应用于终端设备。由于该装置解决问题的原理与实施例1的方法类似,因此其具体的实施可以参照实施例1所述的方法的实施,内容相同或相关之处不再重复说明。
图7是本申请实施例4的小区改变的装置的一示意图。如图7所示,装置700包括:
第一接收单元701,其从第一网络节点接收L1信令和/或L2信令;以及
第一改变单元702,其从服务小区改变到该L2信令和/或L1信令指示的小区,
其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
在一些实施例中,该L2部分重置包括:部分MAC实体重置、部分RLC重建以 及部分PDCP重建中的至少一个。
在一些实施例中,该处理RRC层维护的定时器包括:启动或重启该RRC层维护的定时器,和/或,停止该RRC层维护的定时器。
在一些实施例中,该启动或重启该RRC层维护的定时器包括:启动或重启切换定时器。
在一些实施例中,该停止该RRC层维护的定时器包括以下行为中的至少一个:
停止无线链路监听相关的定时器;
停止失败上报相关的定时器;以及
停止接入尝试相关的定时器。
在一些实施例中,该部分MAC实体重置,包括以下行为中的至少一个:
对于第一定时器,应用该第一定时器的值或重启该第一定时器;
不认为TA相关定时器超时;
不取消触发的BSR过程;以及
不清空下行HARQ进程的软缓存(soft buffer)。
在一些实施例中,如图7所示,该装置还包括:
第二接收单元703,其从该第一网络节点接收一组小区的配置信息,
当该配置信息包括该第一定时器的值时,应用该值;和/或,
当该配置信息不包括该第一定时器的值时,重启该第一定时器。
在一些实施例中,该重启该第一定时器,包括:重启该第一定时器并使用之前的值。
在一些实施例中,该第一定时器是MAC层维护的定时器。
在一些实施例中,该部分RLC重建,包括以下行为中的至少一个:
不丢弃RLC SDUs、RLC SDU分段和RLC PDUs;以及
对于第二定时器,应用该第二定时器的值或重启该第二定时器。
在一些实施例中,如图7所示,该装置还包括:
第三接收单元704,其从该第一网络节点接收一组小区的配置信息,
当该配置信息包括该第二定时器的值时,应用该值;和/或,
当该配置信息不包括该第二定时器的值时,重启该第二定时器。
在一些实施例中,该重启该第二定时器,包括:重启该第二定时器并使用之前的 值。
在一些实施例中,该第二定时器是RLC层维护的定时器。
在一些实施例中,该部分PDCP重建,包括以下行为中的至少一个:
没有密钥更新的PDCP重建;以及
不进行数据恢复。
在一些实施例中,该没有密钥更新的PDCP重建,包括:
发送PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,发送PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该没有密钥更新的PDCP重建,还包括:该发送PDCP实体将会执行以下至少之一:
对于UM DRB和/或AM DRB,继续当前ROCH;
对于UM DRB和/或AM DRB,继续当前EHC;
对于AM DRB,继续丢弃UDC。
在一些实施例中,该没有密钥更新的PDCP重建,包括:
接收PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,接收PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该没有密钥更新的PDCP重建,还包括:
对于UM DRB和/或AM DRB,该接收PDCP实体将会继续当前ROCH。
在一些实施例中,如图7所示,该装置还包括:
第四接收单元705,其从该第一网络节点接收网络信令;
确定单元706:根据该网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
在一些实施例中,当该网络命令包括用于ROCH重置的指示时,该终端设备重置ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的指示时,该终端设备不重置ROCH协议或继续当前ROCH。
在一些实施例中,当该网络命令包括用于ROCH重置的第一指示时,该终端设备的发送PDCP实体重置上行ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的第一指示时,该终端 设备的发送PDCP实体不重置上行ROCH协议或继续当前上行ROCH。
在一些实施例中,当该网络命令包括用于ROCH重置的第二指示时,该终端设备的接收PDCP实体重置下行ROCH协议。
在一些实施例中,当该网络命令不包括用于ROCH重置的第二指示时,该终端设备的接收PDCP实体不重置下行ROCH协议或继续当前下行ROCH。
在一些实施例中,当该网络命令包括用于EHC重置的第三指示时,该终端设备的发送PDCP实体重置上行EHC协议。
在一些实施例中,当该网络命令不包括用于EHC重置的第三指示时,该终端设备的发送PDCP实体不重置上行EHC协议或继续当前上行EHC。
在一些实施例中,当该网络命令包括用于停止UDC丢弃的第四指示时,该终端设备的发送PDCP不继续丢弃UDC。
在一些实施例中,当该网络命令不包括用于停止UDC丢弃的第四指示时,该终端设备的发送PDCP实体继续丢弃UDC。
在一些实施例中,当该网络命令包括用于更新加密算法和密钥的第五指示时,该终端设备的发送PDCP和/或接收PDCP更新加密算法和密钥。
在一些实施例中,当该网络命令不包括用于更新加密算法和密钥的第五指示时,该终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的加密算法和密钥。
在一些实施例中,当该网络命令包括用于更新完整性算法和密钥的第六指示时,该终端设备的发送PDCP和/或接收PDCP更新完整性算法和密钥。
在一些实施例中,当该网络命令不包括用于更新完整性算法和密钥的第六指示时,该终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的完整性算法和密钥。
在一些实施例中,该网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
在一些实施例中,该网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
在一些实施例中,该网络信令的粒度为每(per)终端设备,包括:该网络信令和/或该网络信令包括的指示适用于该终端设备。
在一些实施例中,该网络信令的粒度为每小区,包括:该网络信令和/或该网络 信令包括的指示适用于该小区。
在一些实施例中,该网络信令的粒度为每小区组,包括:该网络信令和/或该网络信令包括的指示适用于该小区组。
在一些实施例中,该网络信令的粒度为每承载,包括:该网络信令和/或该网络信令包括的指示适用于该承载。
在一些实施例中,该网络信令的粒度为每HAQR过程,包括:该网络信令和/或该网络信令包括的指示适用于该HAQR过程。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例5
本申请实施例提供了一种小区改变的装置,该装置应用于第一网络节点。由于该装置解决问题的原理与实施例1的方法类似,因此其具体的实施可以参照实施例2所述的方法的实施,内容相同或相关之处不再重复说明。
图8是本申请实施例5的小区改变的装置的一示意图。如图8所示,装置800包括:
第一发送单元801,其向终端设备发送L1信令和/或L2信令,以指示该终端设备从服务小区改变到该L2信令和/或L1信令指示的小区,
其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
在一些实施例中,如图8所示,该装置还包括:
第二发送单元802,其向该终端设备发送网络信令,该网络信令指示该终端设备在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
在一些实施例中,该网络信令包括以下至少之一:
用于ROCH重置的指示,
用于EHC重置的指示,
用于停止UDC丢弃的指示,
用于更新加密算法和密钥的指示;以及
用于更新完整性算法和密钥的指示。
在一些实施例中,该用于ROCH重置的指示用于指示上行ROCH和/或下行ROCH的重置。
在一些实施例中,该用于ROCH重置的指示包括一个指示,该一个指示用于指示上行ROCH和下行ROCH的重置,或者,
该用于ROCH重置的指示包括第一指示和第二指示,该第一指示用于指示上行ROCH的重置,该第二指示用于指示下行ROCH的重置。
在一些实施例中,该用于EHC重置的指示用于指示上行EHC协议的重置。
在一些实施例中,该网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
在一些实施例中,该网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
在一些实施例中,该网络信令的粒度为每(per)终端设备,包括:该网络信令和/或该网络信令包括的指示适用于该终端设备。
在一些实施例中,该网络信令的粒度为每小区,包括:该网络信令和/或该网络信令包括的指示适用于该小区。
在一些实施例中,该网络信令的粒度为每小区组,包括:该网络信令和/或该网络信令包括的指示适用于该小区组。
在一些实施例中,该网络信令的粒度为每承载,包括:该网络信令和/或该网络信令包括的指示适用于该承载。
在一些实施例中,该网络信令的粒度为每HAQR过程,包括:该网络信令和/或该网络信令包括的指示适用于该HAQR过程。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例6
本申请实施例提供了一种终端设备,该终端设备包括如实施例4所述的小区改变的装置。
图9是本发明实施例6的终端设备的系统构成的一示意框图。如图9所示,终端设备900可以包括处理器910和存储器920;存储器920耦合到处理器910。值得注意的是,该图是示例性的;还可以使用其他类型的结构,来补充或代替该结构,以实现电信功能或其他功能。
在一个实施方式中,小区改变的装置的功能可以被集成到处理器910中。
在一些实施例中,处理器910被配置为:从第一网络节点接收L1信令和/或L2信令;以及从服务小区改变到该L2信令和/或L1信令指示的小区,其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
在另一个实施方式中,小区改变的装置可以与处理器910分开配置,例如可以将小区改变的装置配置为与处理器910连接的芯片,通过处理器910的控制来实现小区改变的装置的功能。
如图9所示,终端设备900还可以包括:通信模块930、输入单元940、显示器950、电源960。值得注意的是,终端设备900也并不是必须要包括图9中所示的所有部件;此外,终端设备900还可以包括图9中没有示出的部件,可以参考相关技术。
如图9所示,处理器910有时也称为控制器或操作控件,可以包括微处理器或其他处理器装置和/或逻辑装置,该处理器1010接收输入并控制终端设备1000的各个部件的操作。
其中,存储器920,例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存各种数据,此外还可存储执行有关信息的程序。并且处理器910可执行该存储器920存储的该程序,以实现信息存储或处理等。其他部件的功能与现有类似,此处不再赘述。终端设备900的各部件可以通过专用硬件、固件、软件或其结合来实现,而不偏离本发明的范围。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例7
本发明实施例提供了一种网络节点,该网络设备包括如实施例5所述的小区改变的装置。
图10是本发明实施例7的网络节点的系统构成的一示意框图。如图10所示,网络节点1000可以包括:处理器(processor)1010和存储器1020;存储器1020耦合到处理器1010。其中该存储器1020可存储各种数据;此外还存储信息处理的程序1030,并且在处理器1010的控制下执行该程序1030,以接收终端设备发送的各种信息、并且向终端设备发送各种信息。
在一个实施方式中,小区改变的装置的功能可以被集成到处理器1110中。
处理器1010可以被配置为:向终端设备发送L1信令和/或L2信令,以指示该终端设备从服务小区改变到该L2信令和/或L1信令指示的小区,其中,该从服务小区改变到该L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
在另一个实施方式中,小区改变的装置可以与处理器1010分开配置,例如可以将小区改变的装置配置为与处理器1010连接的芯片,通过处理器1010的控制来实现小区改变的装置的功能。
此外,如图10所示,网络节点1000还可以包括:收发机1040和天线1050等;其中,上述部件的功能与现有技术类似,此处不再赘述。值得注意的是,网络设备1000也并不是必须要包括图10中所示的所有部件;此外,网络节点1000还可以包括图10中没有示出的部件,可以参考现有技术。
由上述实施例可知,终端设备根据从源网络节点接收的L1信令和/或L2信令,从服务小区改变到到该L2信令和/或L1信令指示的小区,其中该改变包括L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个,从而能够提供实现基于L1/L2的小区改变的过程的有效机制,能够减小时延、信令开销和中断时间。
实施例8
本申请实施例提供了一种通信系统,包括根据实施例6所述的终端设备和/或根据实施例7所述的网络节点。具体的内容可以参照实施例6和实施例7中的记载。
例如,该通信系统的结构可以参照图1,如图1所示,通信系统100包括第一网络节点101和终端设备102,终端设备102可以与实施例6中记载的终端设备相同, 和/或,第一网络节点101可以与实施例7中记载的网络节点相同,重复的内容不再赘述。
本申请以上的装置和方法可以由硬件实现,也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序,当该程序被逻辑部件所执行时,能够使该逻辑部件实现上文所述的装置或构成部件,或使该逻辑部件实现上文所述的各种方法或步骤。逻辑部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本申请还涉及用于存储以上程序的存储介质,如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如,图8中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合,既可以对应于计算机程序流程的各个软件模块,亦可以对应于各个硬件模块。这些软件模块,可以分别对应于图5中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息;或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中,也可以存储在可插入移动终端的存储卡中。例如,若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置,则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图8中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合,可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图8描述的功能方框中的一个或多个和/或功能方框的一个或多个组合,还可以实现为计算设备的组合,例如,DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述,但本领域技术人员应该清楚,这些描述都是示例性的,并不是对本申请保护范围的限制。本领域技术人员可以根据本 申请的精神和原理对本申请做出各种变型和修改,这些变型和修改也在本申请的范围内。
根据本申请实施例公开的各种实施方式,还公开了如下附记:
附记一、
1、一种小区改变的装置,所述装置应用于终端设备,所述装置包括:
第一接收单元,其从第一网络节点接收L1信令和/或L2信令;以及
第一改变单元,其从服务小区改变到所述L2信令和/或L1信令指示的小区,
其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
2、根据附记1所述的装置,其中,所述L2部分重置包括:
部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个。
3、根据附记1或2所述的装置,其中,
所述处理RRC层维护的定时器包括:启动或重启所述RRC层维护的定时器,和/或,停止所述RRC层维护的定时器。
4、根据附记3所述的装置,其中,
所述启动或重启所述RRC层维护的定时器包括:启动或重启切换定时器。
5、根据附记3所述的装置,其中,
所述停止所述RRC层维护的定时器包括以下行为中的至少一个:
停止无线链路监听相关的定时器;
停止失败上报相关的定时器;以及
停止接入尝试相关的定时器。
6、根据附记2所述的装置,其中,所述部分MAC实体重置,包括以下行为中的至少一个:
对于第一定时器,应用所述第一定时器的值或重启所述第一定时器;
不认为TA相关定时器超时;
不取消触发的BSR过程;以及
不清空下行HARQ进程的软缓存(soft buffer)。
7、根据附记6所述的装置,其中,所述装置还包括:
第二接收单元,其从所述第一网络节点接收一组小区的配置信息,
当所述配置信息包括所述第一定时器的值时,应用所述值;和/或,
当所述配置信息不包括所述第一定时器的值时,重启所述第一定时器。
8、根据附记7所述的装置,其中,所述重启所述第一定时器,包括:
重启所述第一定时器并使用之前的值。
9、根据附记6-8中的任一项所述的装置,其中,
所述第一定时器是MAC层维护的定时器。
10、根据附记2所述的装置,其中,所述部分RLC重建,包括以下行为中的至少一个:
不丢弃RLC SDUs、RLC SDU分段和RLC PDUs;以及
对于第二定时器,应用所述第二定时器的值或重启所述第二定时器。
11、根据附记10所述的装置,其中,所述装置还包括:
第三接收单元,其从所述第一网络节点接收一组小区的配置信息,
当所述配置信息包括所述第二定时器的值时,应用所述值;和/或,
当所述配置信息不包括所述第二定时器的值时,重启所述第二定时器。
12、根据附记11所述的装置,其中,所述重启所述第二定时器,包括:
重启所述第二定时器并使用之前的值。
13、根据附记10-12中的任一项所述的装置,其中,
所述第二定时器是RLC层维护的定时器。
14、根据附记2所述的装置,其中,所述部分PDCP重建,包括以下行为中的至少一个:
没有密钥更新的PDCP重建;以及
不进行数据恢复。
15、根据附记14所述的装置,其中,所述没有密钥更新的PDCP重建,包括:
发送PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,发送PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
16、根据附记15所述的装置,其中,所述没有密钥更新的PDCP重建,还包括:
所述发送PDCP实体将会执行以下至少之一:
对于UM DRB和/或AM DRB,继续当前ROCH;
对于UM DRB和/或AM DRB,继续当前EHC;
对于AM DRB,继续丢弃UDC。
17、根据附记14或15所述的装置,其中,所述没有密钥更新的PDCP重建,包括:
接收PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,接收PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
18、根据附记17所述的装置,其中,所述没有密钥更新的PDCP重建,还包括:
对于UM DRB和/或AM DRB,所述接收PDCP实体将会继续当前ROCH。
19、根据附记1所述的装置,其中,所述装置还包括:
第四接收单元,其从所述第一网络节点接收网络信令;
确定单元,其根据所述网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
20、根据附记19所述的装置,其中,
当所述网络命令包括用于ROCH重置的指示时,所述终端设备重置ROCH协议。
21、根据附记19所述的装置,其中,
当所述网络命令不包括用于ROCH重置的指示时,所述终端设备不重置ROCH协议或继续当前ROCH。
22、根据附记19所述的装置,其中,
当所述网络命令包括用于ROCH重置的第一指示时,所述终端设备的发送PDCP实体重置上行ROCH协议。
23、根据附记19所述的装置,其中,
当所述网络命令不包括用于ROCH重置的第一指示时,所述终端设备的发送PDCP实体不重置上行ROCH协议或继续当前上行ROCH。
24、根据附记19或22或23所述的装置,其中,
当所述网络命令包括用于ROCH重置的第二指示时,所述终端设备的接收PDCP实体重置下行ROCH协议。
25、根据附记19或22或23所述的装置,其中,
当所述网络命令不包括用于ROCH重置的第二指示时,所述终端设备的接收PDCP实体不重置下行ROCH协议或继续当前下行ROCH。
26、根据附记19所述的装置,其中,
当所述网络命令包括用于EHC重置的第三指示时,所述终端设备的发送PDCP实体重置上行EHC协议。
27、根据附记19所述的装置,其中,
当所述网络命令不包括用于EHC重置的第三指示时,所述终端设备的发送PDCP实体不重置上行EHC协议或继续当前上行EHC。
28、根据附记19所述的装置,其中,
当所述网络命令包括用于停止UDC丢弃的第四指示时,所述终端设备的发送PDCP不继续丢弃UDC。
29、根据附记19所述的装置,其中,
当所述网络命令不包括用于停止UDC丢弃的第四指示时,所述终端设备的发送PDCP实体继续丢弃UDC。
30、根据附记19所述的装置,其中,
当所述网络命令包括用于更新加密算法和密钥的第五指示时,所述终端设备的发送PDCP和/或接收PDCP更新加密算法和密钥。
31、根据附记19所述的装置,其中,
当所述网络命令不包括用于更新加密算法和密钥的第五指示时,所述终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的加密算法和密钥。
32、根据附记19所述的装置,其中,
当所述网络命令包括用于更新完整性算法和密钥的第六指示时,所述终端设备的发送PDCP和/或接收PDCP更新完整性算法和密钥。
33、根据附记19所述的装置,其中,
当所述网络命令不包括用于更新完整性算法和密钥的第六指示时,所述终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的完整性算法和密钥。
34、根据附记19-33中的任一项所述的装置,其中,
所述网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
35、根据附记19-34中的任一项所述的装置,其中,
所述网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
36、根据附记35所述的装置,其中,所述网络信令的粒度为每(per)终端设备, 包括:
所述网络信令和/或所述网络信令包括的指示适用于所述终端设备。
37、根据附记35所述的装置,其中,所述网络信令的粒度为每小区,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区。
38、根据附记35所述的装置,其中,所述网络信令的粒度为每小区组,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区组。
39、根据附记35所述的装置,其中,所述网络信令的粒度为每承载,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述承载。
40、根据附记35所述的装置,其中,所述网络信令的粒度为每HAQR过程,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述HAQR过程。
41、一种小区改变的装置,所述装置应用于第一网络节点,所述装置包括:
第一发送单元,其向终端设备发送L1信令和/或L2信令,以指示所述终端设备从服务小区改变到所述L2信令和/或L1信令指示的小区,
其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
42、根据附记41所述的装置,所述装置还包括:
第二发送单元,其向所述终端设备发送网络信令,所述网络信令指示所述终端设备在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
43、根据附记42所述的装置,其中,所述网络信令包括以下至少之一:
用于ROCH重置的指示,
用于EHC重置的指示,
用于停止UDC丢弃的指示,
用于更新加密算法和密钥的指示;以及
用于更新完整性算法和密钥的指示。
44、根据附记43所述的装置,其中,
所述用于ROCH重置的指示用于指示上行ROCH和/或下行ROCH的重置。
45、根据附记43所述的装置,其中,
所述用于ROCH重置的指示包括一个指示,
所述一个指示用于指示上行ROCH和下行ROCH的重置,或者,
所述用于ROCH重置的指示包括第一指示和第二指示,
所述第一指示用于指示上行ROCH的重置,
所述第二指示用于指示下行ROCH的重置。
46、根据附记43所述的装置,其中,
所述用于EHC重置的指示用于指示上行EHC协议的重置。
47、根据附记42-46中的任一项所述的装置,其中,
所述网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
48、根据附记42-47中的任一项所述的装置,其中,
所述网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
49、根据附记48所述的装置,其中,所述网络信令的粒度为每(per)终端设备,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述终端设备。
50、根据附记48所述的装置,其中,所述网络信令的粒度为每小区,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区。
51、根据附记48所述的装置,其中,所述网络信令的粒度为每小区组,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区组。
52、根据附记48所述的装置,其中,所述网络信令的粒度为每承载,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述承载。
53、根据附记48所述的装置,其中,所述网络信令的粒度为每HAQR过程,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述HAQR过程。
54、一种终端设备,所述终端设备包括附记1-40中的任一项所述的装置。
55、一种网络节点,所述网络节点包括附记41-53中的任一项所述的装置。
56、一种通信系统,所述通信系统包括附记54所述的终端设备和/或附记55所述的网络节点。
附记二、
1、一种小区改变的方法,所述方法应用于终端设备,所述方法包括:
从第一网络节点接收L1信令和/或L2信令;以及
从服务小区改变到所述L2信令和/或L1信令指示的小区,
其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
2、根据附记1所述的方法,其中,所述L2部分重置包括:
部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个。
3、根据附记1或2所述的方法,其中,
所述处理RRC层维护的定时器包括:启动或重启所述RRC层维护的定时器,和/或,停止所述RRC层维护的定时器。
4、根据附记3所述的方法,其中,
所述启动或重启所述RRC层维护的定时器包括:启动或重启切换定时器。
5、根据附记3所述的方法,其中,
所述停止所述RRC层维护的定时器包括以下行为中的至少一个:
停止无线链路监听相关的定时器;
停止失败上报相关的定时器;以及
停止接入尝试相关的定时器。
6、根据附记2所述的方法,其中,所述部分MAC实体重置,包括以下行为中的至少一个:
对于第一定时器,应用所述第一定时器的值或重启所述第一定时器;
不认为TA相关定时器超时;
不取消触发的BSR过程;以及
不清空下行HARQ进程的软缓存(soft buffer)。
7、根据附记6所述的方法,其中,所述方法还包括:
从所述第一网络节点接收一组小区的配置信息,
当所述配置信息包括所述第一定时器的值时,应用所述值;和/或,
当所述配置信息不包括所述第一定时器的值时,重启所述第一定时器。
8、根据附记7所述的方法,其中,所述重启所述第一定时器,包括:
重启所述第一定时器并使用之前的值。
9、根据附记6-8中的任一项所述的方法,其中,
所述第一定时器是MAC层维护的定时器。
10、根据附记2所述的方法,其中,所述部分RLC重建,包括以下行为中的至少一个:
不丢弃RLC SDUs、RLC SDU分段和RLC PDUs;以及
对于第二定时器,应用所述第二定时器的值或重启所述第二定时器。
11、根据附记10所述的方法,其中,所述方法还包括:
从所述第一网络节点接收一组小区的配置信息,
当所述配置信息包括所述第二定时器的值时,应用所述值;和/或,
当所述配置信息不包括所述第二定时器的值时,重启所述第二定时器。
12、根据附记11所述的方法,其中,所述重启所述第二定时器,包括:
重启所述第二定时器并使用之前的值。
13、根据附记10-12中的任一项所述的方法,其中,
所述第二定时器是RLC层维护的定时器。
14、根据附记2所述的方法,其中,所述部分PDCP重建,包括以下行为中的至少一个:
没有密钥更新的PDCP重建;以及
不进行数据恢复。
15、根据附记14所述的方法,其中,所述没有密钥更新的PDCP重建,包括:
发送PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,发送PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
16、根据附记15所述的方法,其中,所述没有密钥更新的PDCP重建,还包括:
所述发送PDCP实体将会执行以下至少之一:
对于UM DRB和/或AM DRB,继续当前ROCH;
对于UM DRB和/或AM DRB,继续当前EHC;
对于AM DRB,继续丢弃UDC。
17、根据附记14或15所述的方法,其中,所述没有密钥更新的PDCP重建,包括:
接收PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,接收PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
18、根据附记17所述的方法,其中,所述没有密钥更新的PDCP重建,还包括:
对于UM DRB和/或AM DRB,所述接收PDCP实体将会继续当前ROCH。
19、根据附记1所述的方法,其中,所述方法还包括:
从所述第一网络节点接收网络信令;
根据所述网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
20、根据附记19所述的方法,其中,
当所述网络命令包括用于ROCH重置的指示时,所述终端设备重置ROCH协议。
21、根据附记19所述的方法,其中,
当所述网络命令不包括用于ROCH重置的指示时,所述终端设备不重置ROCH协议或继续当前ROCH。
22、根据附记19所述的方法,其中,
当所述网络命令包括用于ROCH重置的第一指示时,所述终端设备的发送PDCP实体重置上行ROCH协议。
23、根据附记19所述的方法,其中,
当所述网络命令不包括用于ROCH重置的第一指示时,所述终端设备的发送PDCP实体不重置上行ROCH协议或继续当前上行ROCH。
24、根据附记19或22或23所述的方法,其中,
当所述网络命令包括用于ROCH重置的第二指示时,所述终端设备的接收PDCP实体重置下行ROCH协议。
25、根据附记19或22或23所述的方法,其中,
当所述网络命令不包括用于ROCH重置的第二指示时,所述终端设备的接收PDCP实体不重置下行ROCH协议或继续当前下行ROCH。
26、根据附记19所述的方法,其中,
当所述网络命令包括用于EHC重置的第三指示时,所述终端设备的发送PDCP实体重置上行EHC协议。
27、根据附记19所述的方法,其中,
当所述网络命令不包括用于EHC重置的第三指示时,所述终端设备的发送PDCP实体不重置上行EHC协议或继续当前上行EHC。
28、根据附记19所述的方法,其中,
当所述网络命令包括用于停止UDC丢弃的第四指示时,所述终端设备的发送PDCP不继续丢弃UDC。
29、根据附记19所述的方法,其中,
当所述网络命令不包括用于停止UDC丢弃的第四指示时,所述终端设备的发送PDCP实体继续丢弃UDC。
30、根据附记19所述的方法,其中,
当所述网络命令包括用于更新加密算法和密钥的第五指示时,所述终端设备的发送PDCP和/或接收PDCP更新加密算法和密钥。
31、根据附记19所述的方法,其中,
当所述网络命令不包括用于更新加密算法和密钥的第五指示时,所述终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的加密算法和密钥。
32、根据附记19所述的方法,其中,
当所述网络命令包括用于更新完整性算法和密钥的第六指示时,所述终端设备的发送PDCP和/或接收PDCP更新完整性算法和密钥。
33、根据附记19所述的方法,其中,
当所述网络命令不包括用于更新完整性算法和密钥的第六指示时,所述终端设备的发送PDCP和/或接收PDCP继续应用与源小区相同的完整性算法和密钥。
34、根据附记19-33中的任一项所述的方法,其中,
所述网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
35、根据附记19-34中的任一项所述的方法,其中,
所述网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
36、根据附记35所述的方法,其中,所述网络信令的粒度为每(per)终端设备,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述终端设备。
37、根据附记35所述的方法,其中,所述网络信令的粒度为每小区,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区。
38、根据附记35所述的方法,其中,所述网络信令的粒度为每小区组,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区组。
39、根据附记35所述的方法,其中,所述网络信令的粒度为每承载,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述承载。
40、根据附记35所述的方法,其中,所述网络信令的粒度为每HAQR过程,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述HAQR过程。
41、一种小区改变的方法,所述方法应用于第一网络节点,所述方法包括:
向终端设备发送L1信令和/或L2信令,以指示所述终端设备从服务小区改变到所述L2信令和/或L1信令指示的小区,
其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
42、根据附记41所述的方法,所述方法还包括:
向所述终端设备发送网络信令,所述网络信令指示所述终端设备在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
43、根据附记42所述的方法,其中,所述网络信令包括以下至少之一:
用于ROCH重置的指示,
用于EHC重置的指示,
用于停止UDC丢弃的指示,
用于更新加密算法和密钥的指示;以及
用于更新完整性算法和密钥的指示。
44、根据附记43所述的方法,其中,
所述用于ROCH重置的指示用于指示上行ROCH和/或下行ROCH的重置。
45、根据附记43所述的方法,其中,
所述用于ROCH重置的指示包括一个指示,
所述一个指示用于指示上行ROCH和下行ROCH的重置,或者,
所述用于ROCH重置的指示包括第一指示和第二指示,
所述第一指示用于指示上行ROCH的重置,
所述第二指示用于指示下行ROCH的重置。
46、根据附记43所述的方法,其中,
所述用于EHC重置的指示用于指示上行EHC协议的重置。
47、根据附记42-46中的任一项所述的方法,其中,
所述网络信令包括:RRC消息、MAC CE以及DCI中的至少一个。
48、根据附记42-47中的任一项所述的方法,其中,
所述网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
49、根据附记48所述的方法,其中,所述网络信令的粒度为每(per)终端设备,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述终端设备。
50、根据附记48所述的方法,其中,所述网络信令的粒度为每小区,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区。
51、根据附记48所述的方法,其中,所述网络信令的粒度为每小区组,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述小区组。
52、根据附记48所述的方法,其中,所述网络信令的粒度为每承载,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述承载。
53、根据附记48所述的方法,其中,所述网络信令的粒度为每HAQR过程,包括:
所述网络信令和/或所述网络信令包括的指示适用于所述HAQR过程。

Claims (20)

  1. 一种小区改变的装置,所述装置应用于终端设备,所述装置包括:
    第一接收单元,其从第一网络节点接收L1信令和/或L2信令;以及
    第一改变单元,其从服务小区改变到所述L2信令和/或L1信令指示的小区,
    其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:L1部分重置、L2部分重置和处理RRC层维护的定时器中的至少一个。
  2. 根据权利要求1所述的装置,其中,所述L2部分重置包括:
    部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个。
  3. 根据权利要求1所述的装置,其中,
    所述处理RRC层维护的定时器包括:启动或重启所述RRC层维护的定时器,和/或,停止所述RRC层维护的定时器。
  4. 根据权利要求3所述的装置,其中,
    所述启动或重启所述RRC层维护的定时器包括:启动或重启切换定时器。
  5. 根据权利要求3所述的装置,其中,
    所述停止所述RRC层维护的定时器包括以下行为中的至少一个:
    停止无线链路监听相关的定时器;
    停止失败上报相关的定时器;以及
    停止接入尝试相关的定时器。
  6. 根据权利要求2所述的装置,其中,所述部分MAC实体重置,包括以下行为中的至少一个:
    对于第一定时器,应用所述第一定时器的值或重启所述第一定时器;
    不认为TA相关定时器超时;
    不取消触发的BSR过程;以及
    不清空下行HARQ进程的软缓存(soft buffer)。
  7. 根据权利要求6所述的装置,其中,所述装置还包括:
    第二接收单元,其从所述第一网络节点接收一组小区的配置信息,
    当所述配置信息包括所述第一定时器的值时,应用所述值;和/或,
    当所述配置信息不包括所述第一定时器的值时,重启所述第一定时器。
  8. 根据权利要求6所述的装置,其中,
    所述第一定时器是MAC层维护的定时器。
  9. 根据权利要求2所述的装置,其中,所述部分RLC重建,包括以下行为中的至少一个:
    不丢弃RLC SDUs、RLC SDU分段和RLC PDUs;以及
    对于第二定时器,应用所述第二定时器的值或重启所述第二定时器。
  10. 根据权利要求9所述的装置,其中,所述装置还包括:
    第三接收单元,其从所述第一网络节点接收一组小区的配置信息,
    当所述配置信息包括所述第二定时器的值时,应用所述值;和/或,
    当所述配置信息不包括所述第二定时器的值时,重启所述第二定时器。
  11. 根据权利要求9所述的装置,其中,
    所述第二定时器是RLC层维护的定时器。
  12. 根据权利要求2所述的装置,其中,所述部分PDCP重建,包括以下行为中的至少一个:
    没有密钥更新的PDCP重建;以及
    不进行数据恢复。
  13. 根据权利要求12所述的装置,其中,所述没有密钥更新的PDCP重建,包括:
    发送PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,发送PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
  14. 根据权利要求12所述的装置,其中,所述没有密钥更新的PDCP重建,包括:
    接收PDCP实体将会继续应用与源小区相同的加密算法和密钥,和/或,接收PDCP实体将会继续应用与源小区相同的完整性算法和密钥。
  15. 根据权利要求1所述的装置,其中,所述装置还包括:
    第四接收单元,其从所述第一网络节点接收网络信令;
    确定单元,其根据所述网络信令,确定在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
  16. 一种小区改变的装置,所述装置应用于第一网络节点,所述装置包括:
    第一发送单元,其向终端设备发送L1信令和/或L2信令,以指示所述终端设备从服务小区改变到所述L2信令和/或L1信令指示的小区,
    其中,所述从服务小区改变到所述L2信令和/或L1信令指示的小区包括:部分MAC实体重置、部分RLC重建、部分PDCP重建和处理RRC层维护的定时器中的至少一个。
  17. 根据权利要求16所述的装置,所述装置还包括:
    第二发送单元,其向所述终端设备发送网络信令,所述网络信令指示所述终端设备在小区改变时执行部分MAC实体重置、部分RLC重建以及部分PDCP重建中的至少一个行为。
  18. 根据权利要求17所述的装置,其中,所述网络信令包括以下至少之一:
    用于ROCH重置的指示,
    用于EHC重置的指示,
    用于停止UDC丢弃的指示,
    用于更新加密算法和密钥的指示;以及
    用于更新完整性算法和密钥的指示。
  19. 根据权利要求17所述的装置,其中,
    所述网络信令的粒度为:每(per)终端设备、每小区、每小区组、每承载或每HAQR过程。
  20. 一种通信系统,所述通信系统包括终端设备和/或网络节点,所述终端设备包括权利要求1所述的装置,所述网络节点包括权利要求16所述的装置。
PCT/CN2022/110980 2022-08-08 2022-08-08 小区改变的方法及装置 WO2024031293A1 (zh)

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