WO2022082539A1 - Procédé et dispositif pour communication radio - Google Patents

Procédé et dispositif pour communication radio Download PDF

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Publication number
WO2022082539A1
WO2022082539A1 PCT/CN2020/122605 CN2020122605W WO2022082539A1 WO 2022082539 A1 WO2022082539 A1 WO 2022082539A1 CN 2020122605 W CN2020122605 W CN 2020122605W WO 2022082539 A1 WO2022082539 A1 WO 2022082539A1
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WIPO (PCT)
Prior art keywords
cell
serving cell
sinr
terminal device
rsrp
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PCT/CN2020/122605
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English (en)
Chinese (zh)
Inventor
郝博
魏璟鑫
吴向春
孔令帅
韩霜
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华为技术有限公司
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Priority to PCT/CN2020/122605 priority Critical patent/WO2022082539A1/fr
Priority to CN202080105052.9A priority patent/CN116158121A/zh
Publication of WO2022082539A1 publication Critical patent/WO2022082539A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a wireless communication method and device.
  • terminal devices that communicate in a mobile state have also become a common communication application scenario. Since the communication coverage of the base station is limited, the terminal equipment may need to perform cell handover during the moving process, so as to make the terminal equipment move from one cell to another cell, so as to avoid the service connection of the terminal equipment (such as voice call connection, network data connection) is significantly interrupted.
  • the service connection of the terminal equipment such as voice call connection, network data connection
  • the terminal device can measure the serving cell and neighbor cells according to the measurement configuration information from the serving cell, and obtain the signal reception quality indicators of the serving cell and the neighbor cells.
  • the signal reception quality indicator can be the reference signal received power (reference signal receiving power, RSRP) or reference signal receiving quality (reference signal receiving quality, RSRQ) or signal to interference plus noise ratio (signal to interference plus noise ratio, SINR); furthermore, the terminal device receives the signal according to the serving cell and the neighbor cell
  • the quality index is judged to meet the reporting conditions of the measurement event (such as A3 event) and trigger the reporting.
  • the base station corresponding to the serving cell can instruct the terminal device to perform cell handover after receiving the report.
  • the above cell handover method may result in insufficient cell handover, affecting normal services of terminal equipment.
  • the present application provides a wireless communication method and device, which are used to solve the technical problem that cell handover is not timely enough and affects the normal service of terminal equipment.
  • an embodiment of the present application provides a wireless communication method, which can be applied to a terminal device or a chip in a terminal device.
  • the terminal device receives measurement configuration information from a serving cell
  • the measurement configuration information includes measurement indication information of the serving cell, measurement indication information of a neighbor cell, and indication information of a measurement event reporting condition; obtain the RSRP of the serving cell according to the measurement configuration information, and the SINR of the serving cell; according to the measurement configuration information, obtain the RSRP of the neighbor cell and the SINR of the neighbor cell; the RSRP of the serving cell and the RSRP of the neighbor cell do not satisfy the requirements from the serving cell
  • the measurement event reporting condition but when the SINR of the neighbor cell is better than the SINR of the serving cell, report the indication information of the measurement event to the serving cell, where the indication information of the measurement event is used to indicate the Neighbor cells are preferred over the serving cell.
  • the terminal device can judge whether to report the indication information of the measurement event according to the RSRP and SINR of the serving cell and the neighbor cell, so that the communication quality of the cell can be considered more comprehensively, so that the terminal device can switch to the one with better communication quality in time. community to improve user experience.
  • the method further includes: receiving a handover command from the serving cell, where the handover command is used to instruct the terminal device to handover to the neighbor cell;
  • the neighbor cell initiates a random access procedure.
  • the measurement event is an A3 event.
  • the serving cell and the neighbor cell are co-frequency cells.
  • the indication information of the measurement event includes the measurement result of the serving cell and the measurement result of the neighbor cell; wherein the measurement result of the serving cell is determined according to the RSRP of the serving cell ; the measurement result of the neighbor cell is determined according to the RSRP of the neighbor cell and the first offset, and the first offset is determined according to the SINR of the neighbor cell and the SINR of the serving cell .
  • the indication information of the measurement event includes the measurement result of the serving cell and the measurement result of the neighbor cell; wherein the measurement result of the serving cell is based on the RSRP and The second offset is determined according to the SINR of the neighbor cell and the SINR of the serving cell; the measurement result of the neighbor cell is determined according to the RSRP of the neighbor cell .
  • the measurement result of the neighbor cell is better than the measurement result of the serving cell.
  • the terminal device is in a high-speed rail mode
  • the high-speed rail mode is a wireless communication optimization mode preset by the terminal device according to a high-speed rail scenario.
  • the terminal device is in a cell edge interference mode
  • the cell edge interference mode is a wireless communication optimization mode preset by the terminal device according to a cell edge interference scenario.
  • an embodiment of the present application provides a wireless communication method, which can be applied to a terminal device or a chip in the terminal device. Taking the method applied to a terminal device as an example, the terminal device receives a reselection configuration from a camped cell.
  • the reselection configuration information includes the reselection indication information of the camping cell, the reselection indication information of the neighbor cell, and the reselection conditions; according to the reselection configuration information, obtain the RSRP of the camping cell , and the SINR of the residing cell; obtain the RSRP of the neighbor cell and the SINR of the neighbor cell according to the reselection configuration information; the RSRP of the residing cell and the RSRP of the neighbor cell are not When the reselection condition from the camping cell is satisfied, but the SINR of the neighbouring cell is better than the SINR of the camping cell, the neighbouring cell is reselected.
  • the terminal device can judge whether to trigger cell reselection according to the RSRP (or RSRQ) and SINR of the residing cell and the neighbor cell, so that the communication quality of the cell can be considered more comprehensively, so that the terminal device can reselect to the communication site in time.
  • a cell with better quality can effectively ensure the access performance of terminal equipment.
  • the camping cell and the neighbor cell are co-frequency cells.
  • the method further includes: after determining that the SINR of the neighbor cell is better than the SINR of the camping cell, determining the neighbor cell according to the RSRP of the neighbor cell and a third offset The third offset is determined according to the SINR of the neighbor cell and the SINR of the residing cell; the signal quality level of the residing cell is determined according to the RSRP of the residing cell; Wherein, the signal quality level of the neighbor cell is better than the signal quality level of the camping cell.
  • the method further includes: after determining that the SINR of the neighbor cell is better than the SINR of the residing cell, determining the signal quality level of the neighbor cell according to the RSRP of the neighbor cell; The RSRP of the residing cell and a fourth offset determine the signal quality level of the residing cell, and the fourth offset is determined according to the SINR of the neighbor cell and the SINR of the residing cell; Wherein, the signal quality level of the neighbor cell is better than the signal quality level of the camping cell.
  • the terminal device is in a high-speed rail mode
  • the high-speed rail mode is a wireless communication optimization mode preset by the terminal device according to a high-speed rail scenario.
  • the terminal device is in a cell edge interference mode
  • the cell edge interference mode is a wireless communication optimization mode preset by the terminal device according to a cell edge interference scenario.
  • an embodiment of the present application provides a communication device, where the communication device may be a terminal device or a chip provided inside the terminal device.
  • the communication device has the function of implementing the first aspect or the second aspect.
  • the communication device includes a module or unit or means corresponding to the steps involved in executing the first aspect or the second aspect, and the function Either unit or means may be implemented by software, or by hardware, or by executing corresponding software by hardware.
  • the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to implement communication between the communication device and other devices, for example, the communication unit is used to receive data from Configuration information of the terminal device; the processing unit can be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations involved in the first aspect or the second aspect.
  • the communication apparatus includes a processor, and may also include a transceiver, where the transceiver is used for transmitting and receiving signals, and the processor executes program instructions to accomplish any one of the first aspect or the second aspect above methods in possible designs or implementations.
  • the communication apparatus may further include one or more memories, which are used for coupling with the processor, and the memories may store necessary computer programs or instructions for implementing the functions involved in the first aspect or the second aspect.
  • the processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication apparatus implement any of the possible designs or implementations of the first aspect or the second aspect. method.
  • the communication device includes a processor, which may be operative to couple with the memory.
  • the memory may store necessary computer programs or instructions to implement the functions involved in the first aspect or the second aspect above.
  • the processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication apparatus implement any of the possible designs or implementations of the first aspect or the second aspect. method.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute any possible design or implementation of the first aspect or the second aspect above method in method.
  • the processor can be implemented by hardware or software.
  • the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the above processors may be one or more, and the memory may be one or more.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor. In a specific implementation process, the memory and the processor may be integrated on the same chip, or may be separately provided on different chips.
  • the embodiment of the present application does not limit the type of the memory and the manner of setting the memory and the processor.
  • an embodiment of the present application provides a communication system, where the communication system includes a terminal device, and the terminal device is configured to execute the wireless communication method described in the first aspect; optionally, the communication system may further include an access network equipment.
  • the present application provides a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to execute the above-mentioned first aspect or The method in any possible design of the second aspect.
  • the present application provides a computer program product that, when a computer reads and executes the computer program product, causes the computer to execute the method in any possible design of the first aspect or the second aspect.
  • the present application provides a chip, the chip includes a processor, and the processor is coupled to a memory for reading and executing a software program stored in the memory, so as to implement the above-mentioned first aspect or the second any possible design method of the aspect.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applicable;
  • FIG. 2 is a schematic diagram of another network architecture to which the embodiments of the present application are applicable;
  • FIG. 3 is a schematic diagram of another network architecture to which the embodiment of the present application is applicable.
  • FIG. 4 is a schematic flowchart corresponding to the wireless communication method provided in Embodiment 1 of the present application.
  • FIG. 5 is a schematic flowchart corresponding to the wireless communication method provided in Embodiment 2 of the present application.
  • FIG. 6 is a possible exemplary block diagram of the apparatus involved in the embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Terminal device It can be a wireless terminal device that can receive the scheduling and instruction information of access network devices.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to users, or a handheld device with wireless connection function. , or other processing device connected to the wireless modem.
  • Terminal equipment can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal equipment can be a mobile terminal equipment, such as a mobile phone (or "cellular" phone, mobile phone (mobile phone), computer and data cards, for example, may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network.
  • RAN radio access network
  • Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • the terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).
  • PLMN public land mobile network
  • Access network device It can be a device in a wireless network.
  • an access network device can be a radio access network (RAN) node (or device) that accesses the terminal device to the wireless network, and Can be called a base station.
  • RAN equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in the 5G communication system Controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B , or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc.
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • base transceiver station base transceiver station
  • the access network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.
  • the access network equipment may be other apparatuses that provide wireless communication functions for the terminal equipment.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device. For convenience of description, in this embodiment of the present application, a device that provides a wireless communication function for a terminal device is referred to as an access network device.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • At least one means one or more, and “plurality” means two or more.
  • And/or which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one of A, B and C includes A, B, C, AB, AC, BC or ABC.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.
  • a terminal device can access a wireless network to obtain services from an external network (eg, the Internet) through the wireless network, or communicate with other devices through the wireless network, such as communicating with other terminal devices.
  • the wireless network includes a RAN and a core network (core network, CN), wherein the RAN is used for connecting terminal equipment (such as the terminal equipment 130) to the wireless network, and the CN is used for managing the terminal equipment and providing communication with the external network. gateway.
  • core network CN
  • the RAN may include one or more RAN devices, such as RAN device 1101 and RAN device 1102 .
  • One or more CN devices may be included in the CN.
  • the CN device 120 may include an access and mobility management function (AMF) entity, a session management function (SMF) entity, User plane function (user plane function, UPF) entity, etc.
  • AMF access and mobility management function
  • SMF session management function
  • UPF User plane function
  • the transmission link from the terminal equipment to the RAN equipment can be denoted as uplink (UL), and the transmission link from the RAN equipment to the terminal equipment
  • the link is denoted as downlink (DL).
  • data transmission in the uplink may be abbreviated as uplink data transmission or uplink transmission
  • data transmission in the downlink may be abbreviated as downlink data transmission or downlink transmission.
  • RAN devices can provide communication coverage for specific geographic areas through integrated or external antenna devices. One or more terminal devices located within the communication coverage of the RAN device can access the RAN device.
  • a RAN device can manage one or more cells (cells), and each cell has an identification (identification), which is also called a cell identity (cell identity, cell ID). From the perspective of radio resources, a cell is a combination of downlink radio resources and paired uplink radio resources (optional).
  • Terminal equipment and RAN equipment should be aware of the predefined configuration of the network architecture, including the radio access technology (RAT) supported by the system and the radio resource configuration specified by the system, such as the basic configuration of the radio frequency band and carrier.
  • the carrier is a frequency range specified by the system, and this frequency range can be determined by the center frequency of the carrier (also called the carrier frequency) and the bandwidth of the carrier.
  • the pre-defined configurations of these systems may be part of standard protocols of the wireless communication system, or determined by interaction between terminal equipment and RAN equipment.
  • the content of the relevant standard protocol may be pre-stored in the memory of the terminal equipment and the RAN equipment, or embodied as hardware circuits or software codes of the terminal equipment and the RAN equipment.
  • each device in the communication system shown in FIG. 1 is only for illustration, and the embodiments of the present application are not limited to this. In practical applications, the communication system may also include more terminal devices and more RAN devices. Other devices may also be included.
  • FIG. 2 is a schematic diagram of another network architecture to which this embodiment of the present application is applicable.
  • the network architecture includes CN equipment, RAN equipment and terminal equipment.
  • the RAN equipment includes a baseband device and a radio frequency device, where the baseband device can be implemented by one node or multiple nodes, and the radio frequency device can be implemented independently from the baseband device, or can be integrated in the baseband device, or some functions Independent integration, some functions are integrated in the baseband device.
  • a RAN device includes a baseband device and a radio frequency device, wherein the radio frequency device can be arranged remotely relative to the baseband device, for example, a remote radio unit (RRU) is a remote radio unit arranged relative to the BBU. unit.
  • RRU remote radio unit
  • the control plane protocol layer structure may include a radio resource control (RRC) layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer. , radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer and other protocol layer functions; user plane protocol layer structure can include PDCP layer, RLC layer, MAC layer
  • RRC radio resource control
  • RLC radio link control
  • MAC media access control
  • user plane protocol layer structure can include PDCP layer, RLC layer, MAC layer
  • SDAP service data adaptation protocol
  • a RAN device may implement the functions of protocol layers such as RRC, PDCP, RLC, and MAC by one node, or may implement the functions of these protocol layers by multiple nodes.
  • a RAN device may include a CU) and a DU, and multiple DUs may be centrally controlled by one CU.
  • the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below PDCP, such as the RLC layer and the MAC layer, are set in the DU.
  • this protocol layer is only an example, and it can also be divided at other protocol layers, for example, at the RLC layer, the functions of the RLC layer and the above protocol layers are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; Alternatively, in a certain protocol layer, for example, some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU. In addition, it can also be divided in other ways, for example, by time delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU.
  • radio frequency device may be integrated independently, not placed in the DU, may also be integrated in the DU, or partially remote and partially integrated in the DU, which is not limited herein.
  • FIG. 3 is a schematic diagram of another network architecture to which this embodiment of the present application is applied.
  • the control plane (CP) and user plane (UP) of the CU can also be separated and divided into different entities for implementation, namely the control plane (CP) CU entity ( That is, the CU-CP entity) and the user plane (user plane, UP) CU entity (that is, the CU-UP entity).
  • CP control plane
  • UP user plane
  • the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU.
  • the DU may not parse the signaling, but directly encapsulate it through the protocol layer and transparently transmit it to the terminal device or CU.
  • the sending or receiving of the signaling by the DU includes this scenario.
  • the signaling of the RRC or PDCP layer is finally processed as the signaling of the PHY layer and sent to the terminal device, or it is converted from the received signaling of the PHY layer.
  • the signaling of the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and radio frequency loading.
  • the network architecture shown in Figure 1, Figure 2 or Figure 3 can be applied to communication systems of various RATs, such as 4G (or long term evolution (LTE)) communication systems, or 5G (or called new radio (NR)) communication system, it can also be a transition system between an LTE communication system and a 5G communication system, and the transition system can also be called a 4.5G communication system, and of course it can be a future Communication Systems.
  • 4G or long term evolution (LTE)
  • 5G new radio
  • NR new radio
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the apparatuses in the following embodiments of the present application may be located in terminal equipment or access network equipment according to the functions implemented by them.
  • the terminal equipment When the terminal equipment is in the RRC connected state (RRC_CONNECTED), due to the movement of the terminal equipment or the difference in cell edge channel fading, the reception quality of the signals from different access network equipment to the terminal equipment is different, which will cause the terminal equipment to move between different cells. switch.
  • RRC_CONNECTED Radio Resource Control
  • the terminal device 130 moves, for example, the terminal device 130 moves from the communication coverage of the access network device 1101 to the connection.
  • the reception quality of the signal received by the terminal device 130 from the access network device 1102 may be better than the reception quality of the signal received by the terminal device from the access network device 1101, which may cause the terminal device to receive the signal.
  • the access network device (that is, the access network device 1101) or cell that the terminal device accesses before the handover may be referred to as the source access network device or the source cell
  • the access network device 1102) or cell may be referred to as a target access network device or a target cell.
  • the terminal device may measure the signal reception quality of the serving cell (for example, a primary cell (PCell) or a primary secondary cell (PSCell) of the terminal device) and neighbor cells to obtain the serving cell and the neighbor cell.
  • the signal reception quality indicator of the neighbor cell When the reporting conditions of the A3 event (Event A3) are met, the terminal device reports the measurement report to the source access network device.
  • the source access network device can indicate The terminal equipment is handed over from the source cell to the target cell.
  • the signal reception quality indicator of the serving cell or the neighbor cell may be RSRP, RSRQ or SINR.
  • the A3 event is defined as: the neighbor cell is better than the serving cell by a certain offset (neighbour becomes offset better than PCell/PSCell).
  • the decision formula for the A3 event is:
  • the above formula 1 is the entry condition of the A3 event, that is, when the formula 1 is satisfied, the A3 event can be entered;
  • the above formula 2 is the exit condition of the A3 event, that is, when the formula 2 is satisfied, the A3 event can be left.
  • formula 1 is continuously satisfied for a period of time (ie, the trigger time (TimeToTrigger))
  • the trigger time timeToTrigger
  • Mn Signal reception quality indicator (eg RSRP) of the neighbor cell.
  • Ocn The specific cell offset of the neighbor cell.
  • Hys A3 event hysteresis.
  • Mp Signal reception quality indicator (such as RSRP) of the serving cell.
  • the specific frequency offset of the serving cell the default value is 0, which can be ignored during handover of intra-frequency cells.
  • Ocp The specific cell offset of the serving cell, usually 0.
  • A3 event offset this value is used to control the difficulty of cell handover.
  • the signal reception quality indicator when the signal reception quality indicator is RSRP, the above-mentioned units of Mn and Mp can be expressed in decibel milliwatts (dBm); when the signal reception quality indicator is RSRQ or SINR, the above-mentioned units of Mn and Mp can be expressed in decibels (dB) said.
  • the units of the above Ofn, Ocn, Hys, Ofp, Ocp, Off may be expressed in decibels.
  • each cell can correspond to a frequency point (or a frequency range, that is, a carrier), which can be called a center frequency point.
  • a center frequency point For example, if the center frequency point is 2100MHz and the bandwidth is 20MHz, the corresponding frequency range of the cell is 2090 ⁇ 2110MHz.
  • An intra-frequency cell may refer to a cell with the same center frequency, and an inter-frequency cell may refer to a cell with a different center frequency.
  • the cell handover described above can be divided into intra-frequency cell handover and inter-frequency cell handover. In the embodiments of the present application, intra-frequency cell handover is used as an example for description, and inter-frequency cell handover can be implemented by reference.
  • the terminal device determines whether to trigger the cell handover according to the RSRP or RSRQ or SINR of the serving cell and the neighbor cell.
  • the values of RSRP, RSRQ, and SINR are consistent or equivalent.
  • the terminal equipment manufacturer usually sets the terminal equipment to determine whether to trigger a cell handover based on one of these three indicators. Considering that it is convenient to measure the RSRP, in the specific implementation of the prior art, it is usually judged whether to trigger the cell handover according to the RSRP of the serving cell and the neighbor cell.
  • RSRP reflects the downlink quality in the current environment of the terminal equipment, it cannot directly reflect the throughput or data transmission status of the terminal equipment. Therefore, in some special scenarios, according to the serving cell and neighbor cells Using RSRP to determine whether to trigger cell handover may result in insufficient cell handover and affect the normal services of terminal equipment.
  • the terminal equipment in a high-speed rail scenario, the terminal equipment is in a fast-moving state.
  • the three indicators of RSRP, RSRQ, and SINR may no longer be consistent.
  • the RSRP of cell A measured by the terminal equipment is higher than the RSRP of cell B, but the SINR of cell A may be much lower than the SINR of cell B (for example, because the terminal equipment
  • the fast movement of cell A may cause strong interference to cell A, so that the SINR of cell A is lower), that is, the communication quality of cell B is better than that of cell A.
  • the terminal equipment since the A3 event is not satisfied, the terminal equipment will continue to stay in cell A without switching to cell B; when the RSRP of cell A measured by the subsequent terminal equipment is lower than that of cell B During RSRP, the terminal equipment may switch from cell A to cell B, but the SINR of cell A is generally very poor at this time, which will cause the terminal equipment throughput to drop or the connection to the access network equipment to be interrupted. It can be seen from this that, according to the RSRP of the serving cell and the neighbor cell, it is judged whether to enter the A3 event, which causes the terminal equipment to fail to switch from cell A to cell B with better communication quality in time.
  • an embodiment of the present application provides a wireless communication method for a terminal device, which is used to solve the technical problem that the cell handover is not timely enough and affects the normal service of the terminal device.
  • the terminal device may determine whether to trigger cell handover according to the RSRP and SINR of the serving cell and the RSRP and SINR of the neighbor cell, or the terminal device may also determine whether to trigger the cell handover according to the RSRQ and SINR of the serving cell and the RSRQ and SINR of the neighbor cell to judge whether to trigger cell handover; that is, the terminal device can judge whether to trigger cell handover based on the combination of two of these three indicators, compared with the prior art that judges whether to trigger cell handover based on one of the indicators
  • this method can consider the communication quality of the cell more comprehensively, so that the terminal device can switch to the cell with better communication quality in time, thereby improving the user experience.
  • the description will be given by taking the terminal device determining whether to trigger a cell handover according to the RSRP and SINR of the serving cell and the neighbor cell as an example. It can be understood that the RSRP involved in the first embodiment can also replace the RSRQ.
  • FIG. 4 is a schematic flowchart corresponding to the wireless communication method provided in Embodiment 1 of the present application. As shown in FIG. 4 , the method includes:
  • the first access network device sends measurement configuration information to the terminal device on the serving cell of the terminal device.
  • the first access network device may send the measurement configuration (MeasConfig) information through an RRC connection reconfiguration (RRC connection reconfiguration) message or an RRC connection resume (RRC connection resume) message.
  • MeasConfig measurement configuration
  • RRC connection reconfiguration RRC connection reconfiguration
  • RRC connection resume RRC connection resume
  • the measurement configuration information may include measurement indication information of a serving cell, measurement indication information of a neighbor cell, and indication information of a measurement event reporting condition.
  • the measurement indication information of the serving cell may include the center frequency of the serving cell (for example, the serving cell is cell 0), and the measurement indication information of the neighbor cell may include the center frequency.
  • the measurement event reporting condition may be: the above formula 1 is continuously satisfied within the trigger time, and the indication information of the measurement event reporting condition may include the parameters required for the calculation of the above formula 1 or formula 2 (such as Ofn, Ofn, Ocn, Hys, Ofp, Ocp, Off) values.
  • the measurement configuration information may include the following information elements (information elements, IEs): multiple measurement objects (measurement objects), multiple measurement reporting configurations (reporting configurations), and multiple measurement identities (measurement identities).
  • IEs information elements
  • the measurement indication information of the serving cell, the measurement indication information of the neighbor cell, and the indication information of the measurement event reporting condition may be carried in these information elements.
  • a measurement object (for example, called measurement object 1) may include some or all of the following contents: the center frequency of the serving cell, the center frequency of the neighbor cell, and the values of parameters such as Ofn, Ocn, Ofp, and Ocp. It should be noted that the values of some parameters of Ofn, Ocn, Ofp, Ocp and other parameters may be default values.
  • a measurement report configuration (for example, called measurement report configuration 1) may include some or all of the following contents: the values of parameters such as Hys and Off, and the type of indicators to be measured (for example, RSRP).
  • a measurement ID is used to associate a measurement report configuration with a measurement object, that is, a measurement ID is used to mark a measurement object + a measurement report configuration, for example, measurement ID 1 is associated with measurement object 1 and measurement report configuration 1.
  • the terminal device may receive measurement configuration information from the serving cell.
  • the terminal device determines whether it is in the target mode, if it is in the target mode, it can execute S404 to S408, and if it is not in the target mode, the specific execution process can refer to the prior art.
  • the target mode may be a high-speed rail mode, a cell edge interference mode, or other possible modes, which are not specifically limited.
  • the high-speed rail mode is a wireless communication optimization mode preset by the terminal device according to the high-speed rail scenario
  • the cell edge interference mode is a wireless communication optimization mode preset by the terminal device according to the cell edge interference scenario.
  • the terminal device can determine whether it is in the high-speed rail mode by receiving the configuration information of the serving cell, or the terminal device can also determine whether it is in the high-speed rail mode through the built-in sensors of the terminal device (such as vibration sensors, acceleration sensors), or the terminal device also It can determine whether it is in high-speed rail mode through its own perception calculation. For example, the terminal device can determine the current moving speed, and then judge whether it is in the high-speed rail mode according to the moving speed. For example, when the moving speed is greater than a preset threshold, it can be determined to be in the high-speed rail mode. Make sure you are not in high-speed rail mode. Wherein, the terminal device may determine the moving speed in various manners, such as determining the moving speed through a global positioning system (global positioning system, GPS) or other location awareness technologies.
  • a global positioning system global positioning system, GPS
  • the above S403 is an optional step, that is, the terminal device may perform cell handover by executing S404 to S408 when it is determined to be in the target mode; or, the terminal device may also ignore the current mode, Instead, S404 to S408 are directly performed to perform cell handover.
  • the terminal device acquires the RSRP and SINR of the serving cell according to the measurement configuration information.
  • the terminal device may receive the downlink signal from the serving cell according to the center frequency of the serving cell, and then measure the RSRP and SINR of the serving cell.
  • the downlink signal here can be a synchronization signal (synchronization signal) and a physical broadcast channel block (PBCH block) (called SSB), or a cell reference signal (cell reference signal, CRS), or channel state information reference Signals (channel state information-reference signals, CSI-RS), or other possible pilot signals, are not specifically limited.
  • PBCH block physical broadcast channel block
  • CRS cell reference signal
  • CSI-RS channel state information reference Signals
  • the terminal device acquires the RSRP and SINR of the neighbor cell according to the measurement configuration information.
  • the terminal device may receive the downlink signal from the neighbor cell according to the center frequency of the neighbor cell, and then measure the RSRP and SINR of the neighbor cell.
  • the downlink signal here may be SSB or CRS or other possible pilot signals, which is not specifically limited.
  • the terminal device can also obtain the identity of the neighbor cell by parsing the SSB of the neighbor cell, such as a physical cell identity (physical cell identity, PCI).
  • the terminal device determines whether to report the indication information of the measurement event to the serving cell according to the RSRP and SINR of the serving cell and the RSRP and SINR of the neighbor cell.
  • the indication information of the measurement event is used to indicate that the neighbor cell is better than the serving cell.
  • the indication information of the measurement event may include a measurement identifier (such as the measurement identifier 1 described above), the measurement result of the serving cell, the identifier of the neighbor cell, and the measurement result of the neighbor cell; The measurement result is better than the measurement result of the serving cell.
  • the terminal device may, according to the RSRP and SINR of the serving cell and the RSRP and SINR of the neighbor cell, the RSRP of the serving cell and the RSRP of the neighbor cell do not meet the measurement event reporting condition from the serving cell, but the SINR of the neighbor cell is better than When the SINR of the serving cell is used, the indication information of the measurement event is reported to the serving cell.
  • the values of the parameters of the A3 event configured by the first access network device for the terminal device are: Hys is 0dB, Ofn, Ofp is 0dB, Ocn, Ocp is 0dB, Off The value of 2dB.
  • Mn+Ofn+Ocn-Hys>Mp+Ofp+Ocp+Off can be expressed as Mn>Mp+2dB. That is to say, if the RSRP of the neighbor cell is 2dB larger than the RSRP of the serving cell, the A3 event can be entered and the first timer can be triggered (the duration of the first timer is equal to the trigger time).
  • the reporting conditions for A3 events otherwise, the reporting conditions for A3 events are not met.
  • the RSRP of the neighbor cell obtained by the terminal equipment is -79dBm and the SINR is 15dB
  • the RSRP of the serving cell is -80dBm and the SINR is -1dB
  • the formula 1 is not satisfied, that is, the reporting conditions of the A3 event are not satisfied; but Since the SINR of the neighbor cell is better than the SINR of the serving cell, the terminal device can report the indication information of the A3 event to the serving cell.
  • Some possible implementations for the terminal equipment to report the indication information of the A3 event to the serving cell are described below with reference to implementation manners 1 to 3.
  • the above S406 may include:
  • the terminal device determines whether the SINR of the serving cell and the SINR of the neighbor cell meet the first preset condition according to the SINR of the serving cell and the SINR of the neighbor cell, and if the first preset condition is met, a2 can be performed.
  • the first preset condition is: M SINR p ⁇ Threshold, and M SINR n>M SINR p+Offset1
  • M SINR p is the SINR of the serving cell
  • M SINR n is the SINR of the neighbor cell
  • Offset1 is an offset value
  • Threshold is a threshold value.
  • Threshold and Offset1 may be preset for the terminal device, or may also be predefined for the protocol, which is not specifically limited.
  • the value of Threshold can be 30dB
  • the value of Offset1 can be 3dB.
  • a2 The terminal device determines whether the RSRP of the serving cell and the RSRP of the neighbor cell meet the second preset condition according to the RSRP of the serving cell and the RSRP of the neighbor cell, and if the second preset condition is met, a3 may be performed.
  • the second preset condition is: Mn+Ofn+Ocn-Hys+Off bySINR-1 >Mp+Ofp+Ocp+Off
  • Off bySINR-1 is the first offset.
  • the first offset can be understood as the offset caused by the SINR of the neighbor cell being better than the SINR of the serving cell, or the first offset is based on the SINR of the neighbor cell and the SINR of the serving cell definite.
  • the value of Off bySINR-1 may be pre-set for the terminal device, or may be pre-defined for the protocol, which is not specifically limited.
  • the value of Off bySINR-1 can be 2dB.
  • the value of Off bySINR-1 can also be adaptively adjusted by the terminal device according to a preset rule.
  • the preset rule can be that the larger the difference between the SINR of the neighbor cell and the SINR of the serving cell, the The value of Off bySINR-1 is also larger, and the specific implementation is not limited.
  • the terminal device starts the first timer.
  • the terminal device determines that the first preset condition and the second preset condition are continuously satisfied within the trigger time after the first timer is started, after the first timer expires, it may report the indication information of the measurement event to the serving cell.
  • the measurement result of the serving cell included in the indication information of the measurement event may be obtained according to the RSRP of the serving cell, for example, the measurement result of the serving cell is Mp+Ofp+Ocp+Off; the measurement result of the neighbor cell may be It is obtained according to the RSRP of the neighbor cell and the first offset.
  • the measurement result of the neighbor cell is Mn+Ofn+Ocn-Hys+Off bySINR-1 .
  • the measurement result of the serving cell reported by the terminal equipment can be understood as the real measurement result of the serving cell
  • the measurement result of the neighbor cell reported by the terminal equipment can be understood as the pseudo measurement result of the neighbor cell (that is, the terminal equipment obtained after adjusting the actual measurement results of the cell).
  • the real measurement result and the pseudo measurement result are described from the perspective of the terminal device, and the network side (ie, the first access network device) may not perceive this.
  • the above S406 may include:
  • the terminal device determines whether the SINR of the serving cell and the SINR of the neighbor cell meet the first preset condition according to the SINR of the serving cell and the SINR of the neighbor cell, and if the first preset condition is met, b2 can be executed.
  • the first preset condition refer to the foregoing implementation manner 1.
  • the terminal device determines whether the RSRP of the serving cell and the RSRP of the neighbor cell meet the third preset condition according to the RSRP of the serving cell and the RSRP of the neighbor cell, and if the third preset condition is met, b3 can be executed.
  • the third preset condition is: Mn+Ofn+Ocn-Hys>Mp+Ofp+Ocp+Off-Off by SINR-2
  • Off bySINR-2 is the second offset.
  • the second offset can be understood as the offset caused by the SINR of the neighbor cell being better than the SINR of the serving cell, or the second offset is based on the SINR of the neighbor cell and the SINR of the serving cell definite.
  • the value of Off bySINR-2 may be pre-set for the terminal device, or may be pre-defined for the protocol, which is not specifically limited.
  • the value of Off bySINR-2 can be 2dB.
  • the value of Off bySINR-2 can also be adaptively adjusted by the terminal device according to a preset rule, and the specific implementation is not limited.
  • the values of the first offset and the second offset may be the same.
  • the terminal device starts the first timer.
  • the terminal equipment reports the indication information of the measurement event to the serving cell.
  • the measurement result of the serving cell included in the indication information of the measurement event is obtained according to the RSRP of the serving cell and the second offset, for example, the measurement result of the serving cell is Mp+Ofp+Ocp+Off-Off bySINR-2 ;
  • the measurement result of the neighbor cell may be obtained according to the RSRP of the neighbor cell and the first offset, for example, the measurement result of the neighbor cell is Mn+Ofn+Ocn-Hys.
  • the measurement result of the neighbor cell reported by the terminal equipment can be understood as the real measurement result of the neighbor cell
  • the measurement result of the serving cell reported by the terminal equipment can be understood as the pseudo measurement result of the serving cell (that is, the terminal equipment obtained after adjusting the actual measurement results of the cell).
  • the above S406 may include:
  • the terminal device determines whether the SINR of the serving cell and the SINR of the neighbor cell meet the first preset condition according to the SINR of the serving cell and the SINR of the neighbor cell, and if the first preset condition is met, c2 can be executed.
  • the first preset condition refer to the foregoing implementation manner 1.
  • the terminal device determines whether the RSRP of the serving cell and the RSRP of the neighbor cell meet the fourth preset condition according to the RSRP of the serving cell and the RSRP of the neighbor cell, and if the fourth preset condition is met, c3 can be executed.
  • the fourth preset condition is:
  • Off bySINR-n is the offset corresponding to the neighbor cell
  • Off bySINR-p is the offset corresponding to the serving cell.
  • both the offset corresponding to the neighbor cell and the offset corresponding to the serving cell can be understood as the offset caused by the fact that the SINR of the neighbor cell is better than the SINR of the serving cell.
  • Off bySINR-n and Off bySINR-p may be preset for the terminal device, or may also be predefined for the protocol, which is not specifically limited.
  • Off bySINR-n can be greater than Off bySIN-R p , for example, the value of Off bySIN-R can be 4dB, and the value of Off bySINR-p can be 2dB; for example, the value of Off bySINR-n can be 2dB, and the value of Off bySINR The value of -p can be -1dB.
  • the terminal device starts the first timer.
  • the terminal device determines that the first preset condition and the fourth preset condition are continuously satisfied within the trigger time after the first timer is started, after the first timer expires, it may report the indication information of the measurement event to the serving cell.
  • the measurement result of the serving cell included in the indication information of the measurement event may be obtained according to the RSRP of the serving cell and the offset corresponding to the serving cell, for example, the measurement result of the serving cell is Mp+Ofp+Ocp+ Off+Off bySINR-p ;
  • the measurement result of the neighbor cell can be obtained according to the RSRP of the neighbor cell and the offset corresponding to the neighbor cell, for example, the measurement result of the neighbor cell is Mn+Ofn+Ocn-Hys+Off bySINR-n .
  • the measurement result of the serving cell reported by the terminal device can be understood as the pseudo measurement result of the serving cell (that is, obtained by the terminal device after adjusting the real measurement result of the serving cell), and the measurement result of the neighbor cell reported by the terminal device
  • the result can be understood as a pseudo measurement result of the neighbor cell (that is, obtained by the terminal device after adjusting the real measurement result of the neighbor cell).
  • the physical layer of the terminal device can perform the measurement of the RSRP and SINR of the serving cell and the neighbor cell, and after completing the filtering with the historical value, the serving cell and the neighbor cell
  • the RSRP and SINR are reported to the RRC layer, so that the RRC layer performs S406 according to the RSRP and SINR of the serving cell and the neighbor cell.
  • the wireless communication method may further include:
  • the first access network device sends a handover command (handover command) to the terminal device, where the handover command is used to instruct the terminal device to switch to a neighbor cell (ie, a target cell).
  • handover command a handover command
  • a neighbor cell ie, a target cell
  • the first access network device may send a handover request (handover request) message to the second access network device corresponding to the target cell; After the network access device receives the handover request message, it can make a handover admission judgment. If the terminal device is allowed to switch to the target cell, it allocates dedicated admission resources for the terminal device, and sends a handover request ACK message to it.
  • the handover acknowledgement message carries the information required by the terminal equipment to access the target cell.
  • the information required by the terminal equipment to access the target cell includes the radio resource configuration information required for the establishment of the bearer of the air interface signaling plane and the user plane.
  • the first access network device After receiving the handover acknowledgement message, the first access network device sends a handover command to the terminal device, where the handover command carries information required by the terminal device to switch to the target cell.
  • the first access network device and the second access network device may be different access network devices, or may be the same access network device; when the first access network device and the second access network device When the devices are the same access network device, the above-mentioned interaction process between the first access network device and the second access network device may not be performed.
  • the first access network device may send the handover command to the terminal device in various manners, for example, the first access network device sends the handover command to the terminal device through an RRC connection reconfiguration message.
  • the terminal device receives the handover command from the first access network device, and according to the handover command, initiates a random access procedure to the target cell to switch to the target cell.
  • the terminal device can judge whether to trigger cell handover according to the RSRP (or RSRQ) and SINR of the serving cell and the neighbor cell, so that the communication quality of the cell can be considered more comprehensively, so that the terminal device can switch to a better communication quality in time community to improve user experience.
  • the terminal device may perform a cell reselection process after camping on a suitable cell and staying for a suitable time (for example, 1 s). Specifically, the terminal device may sort the cells that satisfy the S criterion in the candidate list for cell reselection according to the R criterion, for example, according to the order of the signal quality levels of the cells from high to low. For the cell with the highest ranking, that is, the highest ranking cell, when the duration of the terminal device camping on the current camping cell is greater than 1s, and the duration of the highest ranking cell is not the camping cell of the terminal device, the duration is greater than the preset duration (that is, the reset duration). When selecting time), the terminal device can reselect to the highest ranking cell, and continue the cell reselection process as described above in the highest ranking cell.
  • a suitable time for example, 1 s.
  • the S criterion and the R criterion are introduced in the following.
  • (1) Satisfying the S criterion may mean that: Srxlev>0 and Squal>0 are satisfied.
  • the terminal device can choose to camp on the cell.
  • Qrxlevmeas The received signal level value of the cell, such as RSRP.
  • Qrxlevmin The minimum reception level value of the cell.
  • Qrxlevminoffset The minimum received signal level offset value of the cell.
  • Pcompensation The value is max(PMax-UE Maximum Output Power, 0).
  • PMax The maximum transmit power of the terminal equipment allowed by the cell.
  • UE Maximum Output Power The maximum RF output power capability of the terminal device itself.
  • Qqualmeas The received signal quality of the cell, such as RSRQ.
  • Qqualmin The minimum received signal quality value of the cell.
  • Qqualminoffset The minimum received signal quality offset value of the cell.
  • Qmeas,s RSRP of the camped cell measured by the terminal device.
  • Qhyst The reselection hysteresis value of the camped cell.
  • Qmeas,n RSRP of the neighbor cell measured by the terminal device.
  • Qoffset If the neighbor cell and the camping cell are on the same frequency, the value is the cell-level offset broadcast in the system message of the camping cell, and the default value is 0; if the neighbor cell and the camping cell are on different frequencies cell, the value is the sum of the cell-level offset and the carrier frequency offset broadcast in the system message of the camping cell, and the default value is 0.
  • cell reselection can be divided into intra-frequency cell reselection and inter-frequency cell reselection.
  • intra-frequency cell reselection is used as an example for description, and inter-frequency cell reselection can be implemented by reference.
  • the terminal device determines whether to trigger cell reselection according to the RSRP or RSRQ or SINR of the camping cell and the neighbor cell. Similar to the cell handover described above, in some special scenarios (such as high-speed rail scenarios or cell edge interference scenarios), whether to trigger cell reselection based on the RSRP of the residing cell and neighboring cells may result in insufficient cell reselection. , so that the terminal equipment resides in a sub-optimal cell, which affects the access performance of the terminal equipment (for example, it may cause the random access of the terminal equipment to take a long time).
  • the embodiments of the present application provide a wireless communication method for a terminal device, which solves the technical problem that the cell reselection is not timely enough and affects the access performance of the terminal device.
  • the terminal device can determine whether to trigger cell reselection according to the RSRP and SINR of the camping cell and the neighbor cell, or the terminal device can also determine whether to trigger the cell according to the RSRQ and SINR of the camping cell and the neighboring cell. reselection; that is, the terminal device can determine whether to trigger cell reselection based on two of the three indicators.
  • the communication quality of the cell can be considered more comprehensively, so that the terminal device can reselect to a cell with better communication quality in time.
  • the description will be given by taking the terminal device determining whether to trigger cell reselection according to the RSRP and SINR of the camping cell and the neighbor cell as an example. It can be understood that the RSRP involved in the second embodiment can also replace the RSRQ.
  • FIG. 5 is a schematic flowchart corresponding to the wireless communication method provided in Embodiment 2 of the present application. As shown in FIG. 5 , the method includes:
  • the first access network device sends reselection configuration information to the terminal device on the cell where the terminal device resides.
  • the first access network device may send the reselection configuration information through a system message (for example, a system information block (system information block, SIB) 3, SIB4, and SIB5).
  • a system message for example, a system information block (system information block, SIB) 3, SIB4, and SIB5
  • the reselection configuration information may include reselection indication information of a camping cell, reselection indication information of a neighbor cell, and indication information of a reselection condition.
  • the reselection indication information of the camping cell may include the center frequency of the camping cell, the lowest received level value of the cell, the lowest received signal quality value, and the corresponding offset value
  • the reselection indication information of the neighbor cell may be It includes the center frequency point of the neighbor cell, the minimum received level value of the cell, the minimum received signal quality value, and the corresponding offset value.
  • the reselection condition may be that the duration of the highest ranking cell sorted according to the R criterion is not the camping cell of the terminal equipment is greater than the preset duration (that is, the reselection time), and the indication information of the reselection condition may include the formula required for the calculation of the R criterion. Parameters (such as Qhyst, Qoffset) value, reselection time, etc.
  • the terminal device may receive reselection configuration information from the camping cell.
  • the terminal device determines whether it is in the target mode, if it is in the target mode, it can execute S504 to S506, and if it is not in the target mode, the specific execution process can refer to the prior art.
  • the target mode may be a high-speed rail mode, a cell edge interference mode, or other possible modes, which are not specifically limited.
  • the target mode For the implementation of determining whether the terminal device is in the target mode, reference may be made to S403 in the first embodiment.
  • the terminal device acquires the RSRP and SINR of the camped cell according to the reselection configuration information.
  • the terminal device may receive downlink signals (such as SSB or other possible pilot signals) from the camping cell according to the center frequency of the camping cell, and then measure the RSRP and SINR of the camping cell.
  • downlink signals such as SSB or other possible pilot signals
  • the terminal device acquires the RSRP and SINR of the neighbor cell according to the reselection configuration information.
  • the terminal device may receive downlink signals (such as SSB or other possible pilot signals) from the neighbor cell according to the center frequency of the neighbor cell, and then measure the RSRP and SINR of the neighbor cell.
  • downlink signals such as SSB or other possible pilot signals
  • the terminal device determines whether to trigger cell reselection according to the RSRP and SINR of the camping cell and the RSRP and SINR of the neighbor cell.
  • the terminal device may find that the RSRP of the camping cell and the RSRP of the neighboring cell do not satisfy the reselection condition from the camping cell, but the SINR of the neighboring cell When the SINR of the camping cell is better than that of the camping cell, the neighbor cell is reselected.
  • the above S506 may include:
  • the terminal device determines whether the SINR of the camping cell and the SINR of the neighbor cell meet the fifth preset condition according to the SINR of the camping cell and the SINR of the neighbor cell, and if the fifth preset condition is met, a2 can be executed.
  • the fifth preset condition is: M SINR n>M SINR p+Offset2
  • M SINR p is the SINR of the residing cell
  • M SINR n is the SINR of the neighbor cell
  • Offset2 is an offset value
  • Offset2 may be pre-set for the terminal device, or may be pre-defined for the protocol, which is not specifically limited.
  • the value of Offset2 can be 3dB.
  • the terminal device judges whether the RSRP of the camping cell and the RSRP of the neighbor cell meet the sixth preset condition according to the RSRP of the camping cell and the RSRP of the neighbor cell, and if the sixth preset condition is met, a3 can be performed.
  • the sixth preset condition is: Rn’>Rs
  • Qoffset bySINR is the third offset.
  • the third offset can be understood as the offset caused by the SINR of the neighbor cell being better than the SINR of the residing cell, or the third offset is based on the SINR of the neighbor cell and the residing cell. SINR is determined.
  • the value of Qoffset bySINR-1 may be pre-set for the terminal device, or may be pre-defined for the protocol, which is not specifically limited.
  • the value of Qoffset bySINR-1 can be 2dB.
  • the value of Qoffset bySINR-1 can also be adaptively adjusted by the terminal device according to a preset rule.
  • the preset rule can be that the greater the difference between the SINR of the neighbor cell and the SINR of the camping cell, Then the value of Qoffset bySINR-1 is also larger, and the specific implementation is not limited.
  • the terminal device starts a second timer (the duration of the second timer is equal to the reselection time).
  • the terminal device determines that the fifth preset condition and the sixth preset condition are continuously satisfied within the reselection time after the second timer is started, it will reselection to the neighbor cell after the second timer expires.
  • the above S506 may include:
  • the terminal device determines whether the SINR of the camped cell and the SINR of the neighbor cell meet the fifth preset condition according to the SINR of the camping cell and the SINR of the neighbor cell, and if the fifth preset condition is met, b2 can be executed.
  • the fifth preset condition refer to the foregoing implementation manner 1.
  • the terminal device judges whether the RSRP of the residing cell and the RSRP of the neighbouring cell satisfy the seventh preset condition according to the RSRP of the residing cell and the RSRP of the neighboring cell, and if the seventh preset condition is met, b3 can be executed.
  • the fifth preset condition is: Rn>Rs’
  • Rn Qmeas,n-Qoffset
  • Rs' Qmeas,s+Qhyst-Qoffset by SINR-2
  • Qoffset bySINR-2 is the fourth offset.
  • the fourth offset can be understood as the offset caused by the fact that the SINR of the neighbor cell is better than the SINR of the residing cell, or the fourth offset is based on the SINR of the neighbor cell and the residing cell. SINR is determined.
  • the value of Qoffset bySINR-2 may be pre-set for the terminal device, or may be pre-defined for the protocol, which is not specifically limited.
  • the value of Qoffset bySINR-2 can be 2dB.
  • the value of Qoffset bySINR-2 can also be adaptively adjusted by the terminal device according to a preset rule, and the specific implementation is not limited.
  • the values of the third offset and the fourth offset may be the same.
  • the terminal device starts a second timer (the duration of the second timer is equal to the reselection time).
  • the terminal device determines that the fifth preset condition and the seventh preset condition are continuously satisfied within the reselection time after the second timer is started, it will reselection to the neighbor cell after the second timer expires.
  • the above S506 may include:
  • the terminal device determines whether the SINR of the camped cell and the SINR of the neighbor cell meet the fifth preset condition according to the SINR of the camping cell and the SINR of the neighbor cell, and if the fifth preset condition is met, c2 can be executed.
  • the fifth preset condition refer to the foregoing implementation manner 1.
  • the terminal device judges whether the RSRP of the residing cell and the RSRP of the neighbouring cell satisfy the eighth preset condition according to the RSRP of the residing cell and the RSRP of the neighbor cell, and if the eighth preset condition is met, c3 can be executed.
  • the eighth preset condition is: Rn'>Rs'
  • Rn' Qmeas,n–Qoffset+Qoffset bySINR-n
  • Rs' Qmeas,s+Qhyst+Qoffset bySINR-s
  • Qoffset bySINR-n is the offset corresponding to the neighbor cell
  • Qoffset bySINR-s is the offset corresponding to the residing cell
  • both the offset corresponding to the neighbor cell and the offset corresponding to the camping cell can be understood as the offset caused by the fact that the SINR of the neighbor cell is better than the SINR of the camping cell.
  • the values of Qoffset bySINR-n and Qoffset bySINR-s may be preset for the terminal device, or may also be predefined for the protocol, which is not specifically limited; Qoffset bySINR-n may be greater than Qoffset bySINR -s , for example, the value of Qoffset bySINR-n can be 5dB, and the value of Qoffset bySINR-s can be 2dB; for example, the value of Qoffset bySINR-n can be 1dB, and the value of Qoffset bySINR-s can be -2dB .
  • the terminal device starts a second timer (the duration of the second timer is equal to the reselection time).
  • the terminal device determines that the fifth preset condition and the eighth preset condition are continuously satisfied within the reselection time after the second timer is started, the terminal device will reselection to the neighbor cell after the second timer expires.
  • the terminal device can judge whether to trigger cell reselection according to the RSRP (or RSRQ) and SINR of the residing cell and the neighbor cell, so that the communication quality of the cell can be considered more comprehensively, so that the terminal device can reselect to the communication site in time.
  • a cell with better quality can effectively ensure the access performance of terminal equipment.
  • Embodiment 1 and Embodiment 2 above may be implemented separately, or may be implemented in combination.
  • the terminal device can perform cell reselection (for example, to the first cell) according to the solution in Embodiment 1, and after accessing the first cell, use the solution in Embodiment 2 cell handover, and then handover to another cell.
  • Embodiment 1 and Embodiment 2 may refer to each other.
  • step numbers of the flowcharts described in Embodiment 1 and Embodiment 2 are only an example of the execution process, and do not constitute a restriction on the sequence of execution of the steps, and there is no sequence in the embodiments of the present application. There is no strict order of execution between the steps of a dependency. In addition, not all the steps shown in each flowchart are steps that must be executed, and some steps may be added or deleted on the basis of each flowchart according to actual needs.
  • the terminal device may include corresponding hardware structures and/or software modules for executing each function.
  • the embodiments of the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the terminal device may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • FIG. 6 shows a possible exemplary block diagram of the apparatus involved in the embodiment of the present application.
  • the apparatus 600 may include: a processing unit 602 and a communication unit 603 .
  • the processing unit 602 is used to control and manage the actions of the device 600 .
  • the communication unit 603 is used to support the communication between the apparatus 600 and other devices.
  • the communication unit 603 is also referred to as a transceiving unit, and may include a receiving unit and/or a sending unit, which are respectively configured to perform receiving and sending operations.
  • the apparatus 600 may further include a storage unit 601 for storing program codes and/or data of the apparatus 600 .
  • the apparatus 600 may be the terminal device in the foregoing embodiment, or may also be a chip provided in the terminal device.
  • the processing unit 602 can support the apparatus 600 to perform the actions of the terminal device in the above method examples.
  • the processing unit 602 mainly performs the internal actions of the terminal device in the method example, and the communication unit 603 may support the communication between the apparatus 600 and other devices.
  • the communication unit 603 is configured to: receive measurement configuration information from a serving cell, where the measurement configuration information includes measurement indication information of the serving cell, measurement indication information of neighbor cells, and measurement events Indication information of reporting conditions; the processing unit 602 is configured to: obtain, according to the measurement configuration information, the reference signal received power RSRP of the serving cell and the signal-to-interference and noise ratio SINR of the serving cell; and, according to the measurement configuration information to obtain the RSRP of the neighbor cell and the SINR of the neighbor cell; the communication unit 603 is further configured to: the RSRP of the serving cell and the RSRP of the neighbor cell do not satisfy the measurement from the serving cell Event reporting conditions, but when the SINR of the neighbor cell is better than the SINR of the serving cell, report the indication information of the measurement event to the serving cell, and the indication information of the measurement event is used to indicate that the neighbor cell is superior in the serving cell.
  • the communication unit 603 is further configured to: receive a handover command from the serving cell, where the handover command is used to instruct the terminal device to handover to the neighbor cell; according to the handover command, to The neighbor cell initiates a random access procedure.
  • the measurement event is an A3 event.
  • the serving cell and the neighbor cell are co-frequency cells.
  • the indication information of the measurement event includes the measurement result of the serving cell and the measurement result of the neighbor cell; wherein the measurement result of the serving cell is determined according to the RSRP of the serving cell ; the measurement result of the neighbor cell is determined according to the RSRP of the neighbor cell and the first offset, and the first offset is determined according to the SINR of the neighbor cell and the SINR of the serving cell .
  • the indication information of the measurement event includes the measurement result of the serving cell and the measurement result of the neighbor cell; wherein the measurement result of the serving cell is based on the RSRP and The second offset is determined according to the SINR of the neighbor cell and the SINR of the serving cell; the measurement result of the neighbor cell is determined according to the RSRP of the neighbor cell .
  • the measurement result of the neighbor cell is better than the measurement result of the serving cell.
  • the terminal device is in a high-speed rail mode
  • the high-speed rail mode is a wireless communication optimization mode preset by the terminal device according to a high-speed rail scenario.
  • the terminal device is in a cell edge interference mode
  • the cell edge interference mode is a wireless communication optimization mode preset by the terminal device according to a cell edge interference scenario.
  • each unit in the device can be implemented in the form of software calling through the processing element; also all can be implemented in the form of hardware; some units can also be implemented in the form of software calling through the processing element, and some units can be implemented in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called and executed by a certain processing element of the device.
  • all or part of these units can be integrated together, and can also be implemented independently.
  • the processing element described here can also become a processor, which can be an integrated circuit with signal processing capability.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above method, such as: one or more Application Specific Integrated Circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or a combination of at least two of these integrated circuit forms.
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processors
  • FPGA Field Programmable Gate Array
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a processor, such as a general-purpose central processing unit (CPU), or other processors that can invoke programs.
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • the above unit for receiving is an interface circuit of the device for receiving signals from other devices.
  • the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device for sending signals to other devices.
  • the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
  • FIG. 7 is a schematic structural diagram of a wireless communication device according to an embodiment of the present application.
  • the wireless communication device may be a terminal device in this embodiment of the present application.
  • the wireless communication device may include multiple components, such as: application subsystem, memory, mass storage, baseband subsystem, radio frequency integrated circuit (RFIC) , radio frequency front end (radio frequency front end, RFFE) device, and antenna (antenna, ANT). These components may be coupled by various interconnecting buses or other electrical connections.
  • RFIC radio frequency integrated circuit
  • RFFE radio frequency front end
  • antenna antenna
  • ANT_1 represents the first antenna
  • ANT_N represents the Nth antenna
  • N is a positive integer greater than 1.
  • Tx represents the transmit path
  • Rx represents the receive path
  • different numbers represent different paths.
  • Each path can represent a signal processing channel.
  • FBRx represents the feedback receiving path
  • PRx represents the primary receiving path
  • DRx represents the diversity receiving path.
  • HB means high frequency
  • LB means low frequency, both refer to the relative high and low frequency.
  • BB stands for baseband. It should be understood that the labels and components in FIG. 7 are for illustrative purposes only, and only serve as a possible implementation manner, and the embodiments of the present application also include other implementation manners.
  • a wireless communication device may include more or fewer paths, including more or fewer components.
  • the application subsystem may include one or more processors.
  • the multiple processors may be multiple of the same type of processors, or may include a combination of multiple types of processors.
  • the processor may be a general-purpose processor or a processor designed for a specific field.
  • the processor may be a central processing unit (CPU), a digital signal processor (DSP), or a microcontroller (MCU).
  • the processor may also be a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processing, ISP), an audio signal processor (audio signal processor, ASP), and an artificial intelligence (artificial intelligence, AI) Apply a specially designed AI processor.
  • AI processors include, but are not limited to, neural network processing units (NPUs), tensor processing units (TPUs), and processors called AI engines.
  • the RF integrated circuit (including RFIC 1, and one or more optional RFIC 2) and the RF front-end device can together form the RF subsystem.
  • the radio frequency subsystem can also be divided into the radio frequency receive path (RF receive path) and the radio frequency transmit path (RF transmit path).
  • the radio frequency receiving channel can receive the radio frequency signal through the antenna, process the radio frequency signal (such as amplifying, filtering and down-converting) to obtain the baseband signal, and transmit it to the baseband subsystem.
  • the RF transmit channel can receive the baseband signal from the baseband subsystem, process the baseband signal (such as upconverting, amplifying and filtering) to obtain the RF signal, and finally radiate the RF signal into space through the antenna.
  • a radio frequency integrated circuit may be referred to as a radio frequency processing chip or a radio frequency chip.
  • the baseband subsystem mainly completes the processing of baseband signals.
  • the baseband subsystem can extract useful information or data bits from the baseband signal, or convert the information or data bits into the baseband signal to be transmitted. These information or data bits may be data representing user data or control information such as voice, text, video, etc.
  • the baseband subsystem can implement signal processing operations such as modulation and demodulation, encoding and decoding.
  • the baseband signal processing operations are not identical for different radio access technologies, such as 5G NR and 4G LTE.
  • the baseband subsystem may also include one or more processors.
  • the baseband subsystem may also include one or more hardware accelerators (HACs).
  • HACs hardware accelerators
  • Hardware accelerators can be used to specifically complete some sub-functions with high processing overhead, such as data packet assembly and parsing, data packet encryption and decryption, etc. These sub-functions can also be implemented using general-purpose processors, but hardware accelerators may be more appropriate due to performance or cost considerations.
  • the hardware accelerator is mainly implemented by an application specific integrated circuit (application specified intergated circuit, ASIC).
  • ASIC application specified intergated circuit
  • the hardware accelerator may also include one or more relatively simple processors, such as MCU.
  • the baseband subsystem may be integrated into one or more chips, which may be referred to as baseband processing chips or baseband chips.
  • the baseband subsystem can be used as a separate chip, which can be called a modem or a modem chip.
  • Baseband subsystems can be manufactured and sold in units of modem chips. Modem chips are also sometimes called baseband processors or mobile processors.
  • the baseband subsystem can also be further integrated in a larger chip, manufactured and sold in a larger chip unit. This larger chip may be called a system-on-a-chip, system-on-a-chip, or system on a chip (SoC), or simply a SoC chip.
  • SoC system on a chip
  • the software components of the baseband subsystem can be built into the hardware components of the chip before the chip leaves the factory, or can be imported into the hardware components of the chip from other non-volatile memory after the chip leaves the factory, or can also be downloaded online through the network. and update these software components.
  • the wireless communication device may further include memory, such as the memory and mass storage in FIG. 7 .
  • memory can be divided into volatile memory (volatile memory) and non-volatile memory (non-volatile memory, NVM).
  • Volatile memory refers to memory in which data stored inside is lost when the power supply is interrupted.
  • volatile memory is mainly random access memory (random access memory, RAM), including static random access memory (static RAM, SRAM) and dynamic random access memory (dynamic RAM, DRAM).
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • Non-volatile memory refers to memory whose internal data will not be lost even if the power supply is interrupted.
  • Common non-volatile memories include read only memory (ROM), optical disks, magnetic disks, and various memories based on flash memory technology.
  • ROM read only memory
  • mass storage can choose non-volatile memory, such as flash memory.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications. Sont divulgués un procédé et un dispositif de communication radio. Le procédé comprend les étapes consistant à : recevoir une configuration de mesure provenant d'une cellule de desserte ; acquérir la RSRP et le SINR de la cellule de desserte sur la base des informations de configuration de mesure ; acquérir la RSRP et le SINR d'une cellule voisine sur la base des informations de configuration de mesure ; lorsque la RSRP de la cellule de desserte et la RSRP de la cellule voisine ne satisfont pas à un critère de rapport d'événement de mesure provenant de la cellule de desserte, mais le SINR de la cellule voisine est meilleur que le SINR de la cellule de desserte, rapporter des informations d'indication d'un événement de mesure, les informations d'indication de l'événement de mesure étant utilisées pour indiquer que la cellule voisine est meilleure que la cellule de desserte. Grâce à l'utilisation du procédé décrit ci-dessus, un dispositif terminal est autorisé à déterminer, sur la base de la RSRP et du SINR de la cellule de desserte et de ceux de la cellule voisine, s'il faut ou non rapporter les informations d'indication de l'événement de mesure, en prenant ainsi en considération globalement la qualité de communication des cellules, et en permettant au dispositif terminal d'être transféré à une cellule ayant une meilleure qualité de communication d'une manière opportune.
PCT/CN2020/122605 2020-10-21 2020-10-21 Procédé et dispositif pour communication radio WO2022082539A1 (fr)

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CN115150883A (zh) * 2022-09-05 2022-10-04 荣耀终端有限公司 测量上报方法、装置、终端装置及存储介质
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CN114786223A (zh) * 2022-05-11 2022-07-22 大连市共进科技有限公司 频点切换方法、装置、移动式基站系统和存储介质
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CN116669119B (zh) * 2022-12-28 2024-04-19 荣耀终端有限公司 用于小区切换的方法和装置

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