CN113938960A - Neighbor cell measuring method and device - Google Patents

Neighbor cell measuring method and device Download PDF

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Publication number
CN113938960A
CN113938960A CN202010609816.XA CN202010609816A CN113938960A CN 113938960 A CN113938960 A CN 113938960A CN 202010609816 A CN202010609816 A CN 202010609816A CN 113938960 A CN113938960 A CN 113938960A
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CN
China
Prior art keywords
cell measurement
neighbor cell
terminal device
neighbor
serving cell
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Pending
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CN202010609816.XA
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Chinese (zh)
Inventor
谢宗慧
陈磊
王宏
单宝堃
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202010609816.XA priority Critical patent/CN113938960A/en
Priority to PCT/CN2021/102971 priority patent/WO2022002016A1/en
Publication of CN113938960A publication Critical patent/CN113938960A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • 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
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Abstract

The embodiment of the application discloses a neighbor cell measuring method and a device thereof, wherein the method comprises the following steps: the method comprises the steps that under the condition that terminal equipment is in a Radio Resource Control (RRC) connection state, a neighbor cell measurement result is obtained; and before Radio Link Failure (RLF) is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result. By implementing the embodiment of the application, the RRC connection reestablishment is initiated before the RLF is detected, which is beneficial to reducing the influence on the service of the terminal equipment.

Description

Neighbor cell measuring method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a neighbor cell measurement method and apparatus.
Background
In the wireless communication system, in the process of communication between the terminal equipment and the network equipment, the terminal equipment judges whether the current wireless link can ensure the normal operation of communication service by detecting the quality of the wireless link between the terminal equipment and the network equipment. When the quality of a wireless link between the terminal device and the network device currently establishing connection is poor, so that the communication service of the terminal device cannot normally operate, the terminal device may perform cell selection, search for a suitable neighboring cell to execute a Radio Resource Control (RRC) connection reestablishment procedure for the neighboring cell, and further establish communication connection with the network device corresponding to the neighboring cell to recover the normal operation of the communication service of the terminal device.
However, when the communication service fails to operate normally, cell reselection and RRC connection reestablishment are performed, which may cause long-term service interruption and greatly affect the communication service of the terminal device.
Disclosure of Invention
The embodiment of the application provides a neighbor cell measuring method and a neighbor cell measuring device, which are beneficial to reducing the influence of the quality deterioration of a wireless link on the service of terminal equipment.
In a first aspect, an embodiment of the present application provides a method for measuring a neighboring cell, where the method includes: the method comprises the steps that under the condition that terminal equipment is in a Radio Resource Control (RRC) connection state, a neighbor cell measurement result is obtained; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the terminal device; and before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result.
In the technical scheme, the terminal equipment initiates RRC connection reestablishment before the RLF is detected, which is beneficial to ensuring data transmission of the terminal equipment and reducing the influence of the quality deterioration of the wireless link on the service of the terminal equipment.
In one implementation, the method may further include: the terminal equipment receives first indication information from network equipment corresponding to the serving cell, wherein the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to neighbor cell measurement configuration parameters; the first indication information is sent when the network device determines that the serving cell meets a first preset condition, that is, the terminal device may receive the first indication information when the serving cell meets the first preset condition; the specific implementation manner of the terminal device obtaining the neighbor cell measurement result may be: and measuring the plurality of adjacent cells according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results.
In the technical scheme, the terminal equipment is instructed to perform the neighbor cell measurement under the condition that the serving cell meets the first preset condition, so that the terminal equipment is facilitated to acquire the neighbor cell measurement result more timely, and further, the RRC connection reconstruction is facilitated to be performed more timely, and the influence on the service of the terminal equipment is reduced.
In an implementation manner, the first indication information is specifically used for indicating the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In the technical scheme, when the first indication information is used for indicating the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter, the network device sends the first indication information once, so that the terminal device can be indicated to perform multiple neighbor cell measurements, and signaling resources are saved.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the method may further include: before receiving first indication information from network equipment corresponding to a serving cell, terminal equipment measures the serving cell to obtain channel quality information of the serving cell; and sending second indication information to the network equipment under the condition that the channel quality information of the serving cell meets the first preset condition, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition.
In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to the serving cell, the second indication information may include the neighboring cell measurement configuration parameter.
In this technical solution, the network device corresponding to the serving cell cannot know the neighboring cell measurement configuration parameters configured in the terminal device, and also cannot know when the terminal device performs neighboring cell measurement. By carrying the neighbor cell measurement configuration parameters configured in the terminal device in the second indication information, the network device corresponding to the serving cell can acquire the neighbor cell measurement configuration parameters, thereby being beneficial to avoiding the conflict between the communication between the terminal device and the network device and the neighbor cell measurement of the terminal device.
In one implementation, the method may further include: and the terminal equipment receives third indication information from the network equipment, wherein the third indication information is used for indicating the terminal equipment to stop the neighbor cell measurement.
In the technical scheme, the terminal equipment can be prevented from always performing neighbor cell measurement, so that the power consumption of the terminal equipment is reduced.
In one implementation, the third indication information may be sent when the network device determines that the serving cell of the terminal device satisfies a third preset condition.
In the technical scheme, the terminal equipment can be prevented from carrying out unnecessary adjacent cell measurement, so that the power consumption of the terminal equipment is reduced.
In an implementation manner, a specific implementation manner in which the terminal device initiates an RRC connection reestablishment procedure for a target neighboring cell in the multiple neighboring cells according to the neighboring cell measurement result may be that: and under the condition that the channel quality information of the target adjacent cell meets a second preset condition, the terminal equipment initiates an RRC connection reestablishment process aiming at the target adjacent cell.
In the technical scheme, the terminal device performs RRC connection reestablishment on the target neighboring cell of which the channel quality information meets the second preset condition, so that the terminal device is favorable for obtaining higher-quality service, and unnecessary power and wireless resource consumption caused by the fact that the terminal device still keeps communication with the serving cell when the channel quality of the serving cell is poor are avoided.
In one implementation, the channel quality information may include an estimate of a channel quality parameter; the channel quality information of the target neighboring cell satisfying the second preset condition may include one or more of the following: the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the evaluation value of the channel quality parameter of the serving cell is greater than a first preset threshold value; the evaluation value of the channel quality parameter of the target neighboring cell is greater than a second preset threshold value, and the evaluation value of the channel quality parameter of the serving cell is less than a third preset threshold value; the second preset threshold is not less than a third preset threshold; and the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the fourth preset threshold is greater than the fifth preset threshold.
In a second aspect, an embodiment of the present application provides another neighbor cell measurement method, where the method includes: the network equipment determines that a service cell of the terminal equipment meets a first preset condition; sending first indication information to the terminal equipment so as to enable the terminal equipment to measure a plurality of adjacent cells of the service cell according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises the channel quality information of the plurality of neighbor cells; the network device is a network device corresponding to the serving cell.
In the technical scheme, on one hand, the terminal equipment is instructed to perform neighbor cell measurement under the condition that the serving cell meets the first preset condition, so that the terminal equipment is facilitated to obtain neighbor cell measurement results more timely, and further, the terminal equipment is facilitated to determine a proper target neighbor cell more timely to perform RRC connection reconstruction; on the other hand, the terminal device initiates RRC connection reestablishment before detecting the RLF, which is beneficial to ensure data transmission of the terminal device and reducing the impact on the service of the terminal device.
In an implementation manner, the first indication information is specifically used for indicating the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In the technical scheme, when the first indication information is used for indicating the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter, the network device sends the first indication information once, so that the terminal device can be indicated to perform multiple neighbor cell measurements, and signaling resources are saved.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the method may further include: the network device receives second indication information from the terminal device, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets a first preset condition.
In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to the serving cell, the second indication information may include the neighboring cell measurement configuration parameter. Alternatively, the serving cell may interact with a historical serving cell to obtain the neighbor cell measurement configuration parameter. Optionally, the network device corresponding to the serving cell may send a parameter request to the network device corresponding to the historical serving cell, so as to request to obtain the neighboring cell measurement configuration parameter. Optionally, the network device corresponding to the historical serving cell may actively send the neighboring cell measurement configuration parameter to the network device corresponding to the serving cell. The network device corresponding to the history serving cell may be the network device for configuring the neighboring cell measurement configuration parameter.
In this technical solution, the network device corresponding to the serving cell cannot know the neighboring cell measurement configuration parameters configured in the terminal device, and also cannot know when the terminal device performs neighboring cell measurement. By carrying the neighbor cell measurement configuration parameters configured in the terminal device in the second indication information (or by interacting the serving cell with the historical serving cell to obtain the neighbor cell measurement configuration parameters), the network device corresponding to the serving cell can obtain the neighbor cell measurement configuration parameters, thereby being beneficial to avoiding the conflict between the communication between the terminal device and the network device and the neighbor cell measurement of the terminal device.
In one implementation, the method may further include: and the network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating the terminal equipment to stop the neighbor cell measurement.
In the technical scheme, the terminal equipment can be prevented from always performing neighbor cell measurement, so that the power consumption of the terminal equipment is reduced.
In an implementation manner, a specific implementation manner of the network device sending the third indication information to the terminal device may be: and under the condition that the service cell of the terminal equipment meets a third preset condition, sending third indication information to the terminal equipment.
In the technical scheme, the terminal equipment can be prevented from carrying out unnecessary adjacent cell measurement, so that the power consumption of the terminal equipment is reduced.
In one implementation, the method may further include: the network equipment acquires the scheduling condition information of the serving cell; and determining that the serving cell meets a first preset condition according to the scheduling condition information.
In one implementation, the scheduling information may include a radio resource control RRC maximum repetition number configured by the network device; the specific implementation manner of the network device determining that the serving cell meets the first preset condition according to the scheduling condition information may be: and if the maximum repetition times is greater than a first preset time, determining that the serving cell meets a first preset condition.
In one implementation, the scheduling information may include a repetition number indicated in the downlink control information DCI; the specific implementation manner of the network device determining that the serving cell meets the first preset condition according to the scheduling condition information may be: and if the repetition times are greater than a second preset time, determining that the serving cell meets a first preset condition.
In a third aspect, the present application provides a communication apparatus, where the communication apparatus has some or all of the functions of the terminal device in the method example described in the first aspect, for example, the functions of the communication apparatus may have the functions in some or all of the embodiments in the present application, or may have the functions of implementing any of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.
In one implementation, the communication device may include a processing unit and a communication unit in a structure, where the processing unit is configured to support the communication device to execute corresponding functions in the above method. The communication unit is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory unit for coupling with the processing unit and the transmitting unit, which saves computer programs and data necessary for the communication device.
In one implementation, the communication device includes: the processing unit is used for acquiring a neighbor cell measurement result under the condition that the communication device is in a Radio Resource Control (RRC) connection state; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the communication device; and the communication unit is used for initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result before the RLF is detected.
As an example, the processing unit may be a processor, the communication unit may be a transceiver or a communication interface, and the storage unit may be a memory.
In one implementation, the communication device includes: the processor is used for acquiring a neighbor cell measurement result under the condition that the communication device is in a Radio Resource Control (RRC) connection state; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the communication device; and the transceiver is used for initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result before the RLF is detected.
In a fourth aspect, the present application provides another communication apparatus, where the communication apparatus has some or all of the functions of the network device in the method example described in the second aspect, for example, the functions of the communication apparatus may have the functions in some or all of the embodiments in the present application, or may have the functions of implementing any of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.
In one implementation, the communication device may include a processing unit and a communication unit in a structure, where the processing unit is configured to support the communication device to execute corresponding functions in the above method. The communication unit is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory unit for coupling with the processing unit and the transmitting unit, which saves computer programs and data necessary for the communication device.
In one implementation, the communication device includes: the processing unit is used for determining that a serving cell of the terminal equipment meets a first preset condition; the communication unit is used for sending first indication information to the terminal equipment so as to enable the terminal equipment to measure a plurality of adjacent cells of the service cell according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises the channel quality information of the plurality of neighbor cells; the communication device is a network device corresponding to the serving cell.
As an example, the processing unit may be a processor, the communication unit may be a transceiver or a communication interface, and the storage unit may be a memory.
In one implementation, the communication device includes: the processor is used for determining that a serving cell of the terminal equipment meets a first preset condition; the transceiver is used for sending first indication information to the terminal equipment so as to enable the terminal equipment to measure a plurality of adjacent cells of the serving cell according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises the channel quality information of the plurality of neighbor cells; the communication device is a network device corresponding to the serving cell.
In a fifth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, the computer program including program instructions, which, when executed by a communication apparatus, cause the communication apparatus to execute the method of the first aspect.
In a sixth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, the computer program including program instructions, which, when executed by a communication apparatus, cause the communication apparatus to execute the method of the second aspect.
In a seventh aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.
In an eighth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.
In a ninth aspect, the present application provides a chip system, which includes at least one processor and an interface, and is configured to enable a terminal device to implement the functions according to the first aspect, for example, to determine or process at least one of data and information related to the method. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be formed by a chip, or may include a chip and other discrete devices.
In a tenth aspect, the present application provides a chip system, which includes at least one processor and an interface, for enabling a network device to implement the functions related to the second aspect, for example, determining or processing at least one of data and information related to the method. In one possible design, the system-on-chip further includes a memory for storing computer programs and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.
Drawings
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for measuring a neighboring cell according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another neighbor cell measurement method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of another neighboring cell measurement method provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another communication device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a chip according to an embodiment of the present application.
Detailed Description
For ease of understanding, terms referred to in the present application will be first introduced.
1. Radio Resource Control (RRC)
RRC refers to performing radio resource management, control, and scheduling through certain policies and means, providing radio resource parameters for an upper layer and controlling main parameters and behaviors of a lower layer. Under the condition of meeting the requirement of service quality, limited wireless network resources are fully utilized as much as possible, the planned coverage area is ensured to be reached, and the service capacity and the resource utilization rate are improved as much as possible.
2. Radio Link Failure (RLF)
In the present application, Radio Link Failure (RLF) refers to a physical layer connection interruption between a terminal device and a network device, which occurs in an RRC connected state of the terminal device. And when the RLF does not recover the physical layer connection for a certain time, the terminal equipment enters an RRC idle state from the RRC connected state. Accordingly, entering RLF in this application refers to determining that a physical layer connection interruption state between the terminal device and the network device is entered, where "entering RLF" may also be understood as entering an RLF state, or RLF occurs, or RLF is detected. Further, in this state, the terminal device initiates RRC connection reestablishment.
In order to better understand the neighbor cell measurement method disclosed in the embodiment of the present application, a communication system applicable to the embodiment of the present application is first described below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one terminal device and three network devices, the number and form of the devices shown in fig. 1 are used for example and do not constitute a limitation to the embodiments of the present application, and in practical applications, two or more terminal devices and one, two, four or more network devices may be included. The communication system shown in fig. 1 is exemplified by including one terminal apparatus 101 and three network apparatuses (a first network apparatus 102, a second network apparatus 103, and a third network apparatus 104 in fig. 1).
The first network device 102 is a network device corresponding to a serving cell of the terminal device 101, the second network device 103 is a network device corresponding to a neighboring cell a, and the third network device 104 is a network device corresponding to a neighboring cell b. And the adjacent cell a and the adjacent cell b are adjacent cells of the service cell. It should be noted that the communication system shown in fig. 1 includes two adjacent regions (i.e., adjacent region a and adjacent region b) for example only, and does not constitute a limitation to the embodiment of the present application. In one implementation, the communication system shown in fig. 1 may include other neighboring cells of the serving cell in addition to the neighboring cell a and the neighboring cell b. In fig. 1, the oval area where the first network device 102 is located is a coverage area of a serving cell of the terminal device 101, the oval area where the second network device 103 is located is a coverage area of a neighboring cell a, and the oval area where the third network device 104 is located is a coverage area of a neighboring cell b. The terminal device 101 is simultaneously within the coverage of the serving cell, the neighboring cell a, and the neighboring cell b.
The terminal device 101 may obtain a neighbor cell measurement result in an RRC connected state; the neighbor cell measurement result may include channel quality information of multiple neighbor cells (e.g., neighbor cell a and neighbor cell b) of the serving cell of the terminal device 101; and before Radio Link Failure (RLF) is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result. Fig. 1 takes the target neighboring cell as the neighboring cell b as an example, which does not limit the embodiment of the present application, and the target neighboring cell may also be the neighboring cell a.
When detecting the RLF, the terminal device 101 may indicate that the link quality between the terminal device 101 and the network device corresponding to the serving cell (i.e., the first network device 102) is poor, and at this time, the service of the terminal device 101 may be affected. Therefore, compared with initiating the RRC connection reestablishment procedure after detecting the RLF, the terminal device 101 initiates the RRC connection reestablishment before detecting the RLF, which is beneficial to reducing the impact on the service of the terminal device 101.
It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example: a Long Term Evolution (LTE) system, a 5th generation (5G) mobile communication system, and a 5G New Radio (NR) system. Optionally, the method of the embodiment of the present application is also applicable to various future communication systems, such as a 6G system or other communication networks.
The terminal device 101 in the embodiment of the present application is an entity, such as a mobile phone, on the user side for receiving or transmitting signals. A terminal device may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote surgery (remote management), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (city), a wireless terminal in smart home (smart home), a terminal device in narrowband internet of things (NB-IoT), an enhanced machine type communication (tc) terminal device, and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.
The terminal equipment of the NB-IoT and the eMTC has the characteristics of low complexity, low cost, low power consumption and low bandwidth, and is suitable for wide scenes of the Internet of things. For example, smart water meters, smart electric meters, smart homes, smart cities, and the like. Currently, large-scale Machine Type communication mtc (mtc) is one of three major application scenarios of 5G, in which new radio-Light (NR-Light) and reduced capability (redcapability) access technologies are widely discussed and focused, and it is generated to adapt to the development of 5G, and it is required to have the features of NB-IoT and eMTC terminal devices.
In order to meet the requirements of low complexity, low cost and the like, the terminal equipment does not support the cell switching function of the conventional terminal equipment. For example, after the RLF occurs at the edge of the cell 1 due to the signal degradation, if the terminal device finds a suitable neighboring cell (cell 2) through cell selection, the terminal device reestablishes to the cell 2 through the RRC connection reestablishment procedure. This may result in that such terminal devices cannot re-establish cell 2 in time, i.e. there is a long delay in changing cells. This may cause the terminal device to consume more power and radio resources when communicating with the cell 1 at the edge of the cell 1 (the channel state is poor), and the time for changing the cell is long, which may result in a long interruption of the communication service of the terminal device, and a large impact on the communication service of the terminal device. By implementing the embodiment of the application, the time delay of the NB-IoT terminal equipment for changing the cell is favorably shortened, so that the service quality of the NB-IoT terminal equipment is ensured, and the power and the wireless resources are saved.
The network devices (e.g., the first network device 102, the second network device 103, and the third network device 104) in the embodiments of the present application are entities for transmitting or receiving signals on the network side. For example, the network device may be an evolved NodeB (eNB), a transmission point (TRP), a next generation base station (gNB) in the NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.
It should be understood that the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and as a person skilled in the art knows that along with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
The neighbor cell measurement method and the communication apparatus provided in the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 2, fig. 2 is a schematic flowchart of a neighbor cell measurement method according to an embodiment of the present disclosure. The execution main body of steps S201 to S202 is a terminal device or a chip in the terminal device, and the following description will take the terminal device as the execution main body of the neighbor cell measurement method as an example. As shown in fig. 2, the method may include, but is not limited to, the following steps:
step S201: the method comprises the steps that under the condition that terminal equipment is in a Radio Resource Control (RRC) connection state, a neighbor cell measurement result is obtained; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the terminal device.
In this embodiment, the terminal device may perform neighbor cell measurement on a plurality of neighbor cells of a serving cell of the terminal device in an RRC connected state, so as to obtain a neighbor cell measurement result. The neighbor cell measurement result may include channel quality information of each neighbor cell in the plurality of neighbor cells.
In the embodiment of the present application, the channel quality information of a cell (e.g., a neighboring cell, a serving cell) may include an estimated value of a channel quality parameter. The channel quality parameter may include at least one of: reference Signal Receiving Power (RSRP), Received Signal Strength Indication (RSSI), Reference Signal Receiving Quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), number of successful reception repetitions, number of repeated transmissions, coverage enhancement level, transmit power, downlink radio link error rate, link level of a PDCCH that is supposed to be reliably received at a certain block error rate, distance between a terminal device and the coverage center of the cell (or the network device corresponding to the cell). In one implementation manner, the terminal device may obtain the signal quality information of the neighboring cell by measuring a reference signal sent by a network device corresponding to the neighboring cell, where the reference signal may include at least one of the following: a cell-specific reference signal (CRS), a Synchronization Signal Block (SSB), and a channel state information reference signal (CSI-RS).
In an implementation manner, the plurality of neighboring cells measured by the terminal device may refer to any one of the following: the plurality of adjacent cells are same-frequency adjacent cells of the service cell; the plurality of adjacent cells are pilot frequency adjacent cells of the service cell; a part of the cells in the plurality of adjacent cells are same-frequency adjacent cells of the service cell, and a part of the cells are different-frequency adjacent cells of the service cell; the plurality of adjacent cells are different system adjacent cells of the service cell; and a part of the cells in the plurality of adjacent cells are the inter-system adjacent cells of the service cell. It should be noted that the meaning of the inter-system neighbor cell may be: the serving cell and the neighboring cell of the terminal device belong to different communication systems (e.g., the serving cell belongs to a 4G communication system, and the neighboring cell belongs to a 5G communication system), and the terminal device supports both communication in the communication system to which the serving cell belongs and communication in the communication system to which the neighboring cell belongs.
In this embodiment of the present application, each cell may be configured with a neighbor cell list, and the neighbor cell list may be used to indicate a neighbor cell to be measured of the cell. For example, the neighbor cell list may include information such as a cell identifier and/or a frequency point of a neighbor cell to be measured, and is used to instruct the terminal device to measure the neighbor cell corresponding to the cell identifier, and/or instruct the terminal device to measure the neighbor cell on the corresponding frequency point. In an implementation manner, the multiple neighboring cells may be part of or all of neighboring cells in a neighboring cell list configured for a serving cell of the terminal device, which is not limited in this embodiment of the present application. In an implementation manner, the neighboring cell to be tested may be determined by: when the embodiment of the application is applied to a scene that the terminal equipment moves, the terminal equipment can predict which cell is to be covered next, and the predicted cell is used as a neighboring cell to be measured. Optionally, the terminal device may predict which cell is to be covered next according to the historical moving path; or, the terminal device may predict, according to a destination input by the user in the terminal device, which cell is to be covered next in combination with coverage information issued by the network device, which is not limited in this embodiment of the present application.
In one implementation, the terminal device may measure a serving cell to obtain channel quality information of the serving cell when the terminal device is in an RRC connected state; and under the condition that the channel quality information of the service cell meets the first preset condition, performing neighbor cell measurement on a plurality of neighbor cells of the service cell of the terminal equipment. Wherein, the condition that the channel quality information of the serving cell satisfies the first preset condition may indicate that: the channel quality of the serving cell is poor, degraded or will be degraded. The channel quality information of the serving cell may include an estimated value of a channel quality parameter. The channel quality parameters may include, but are not limited to, at least one of: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), number of successful reception repetitions, number of repeated transmissions, coverage enhancement level, transmission power, downlink radio link block error rate, link level for reliable reception of a hypothetical PDCCH at a particular block error rate, distance between the terminal device and the coverage center of the serving cell (or network device corresponding to the serving cell). The that the channel quality information of the serving cell satisfies the first preset condition may include: for example, the reference signal received power of the serving cell is lower than a preset reference signal received power threshold. Or, the distance between the terminal device and the coverage center of the serving cell (or the network device corresponding to the serving cell) exceeds a preset distance threshold, so that the quality of the signal received by the terminal device from the serving cell is poor. By the method, the terminal equipment can measure the adjacent cells in time so as to initiate an RRC connection reestablishment process aiming at the target adjacent cells in the adjacent cells according to the adjacent cell measurement result under the condition that the channel quality of the service cell is poor but the RLF is not detected.
It is noted that, in general, after detecting the RLF, the NB-IoT terminal device determines a suitable neighboring cell through cell selection, and then initiates an RRC connection reestablishment procedure for the neighboring cell to replace the cell. In this way, a long time delay exists when the cell is changed, so that the NB-IoT terminal device still maintains communication with the serving cell in a poor channel state, more power and wireless resources are consumed, and a long time interruption may have a great impact on the communication service of the NB-IoT terminal device. And the NB-IoT terminal equipment performs neighbor cell measurement on a plurality of neighbor cells of the serving cell under the condition that the channel quality information of the serving cell meets the first preset condition but does not detect the RLF yet. The appropriate target neighbor cell can be determined in advance, so that the time delay for changing the cell is favorably shortened, and the service quality of the NB-IoT terminal equipment is ensured.
In an implementation manner, when the channel quality information of the serving cell meets the first preset condition, the terminal device may send a notification to the network device corresponding to the serving cell, and perform neighbor cell measurement on a plurality of neighbor cells of the serving cell. Wherein the notification may be used to indicate that the channel quality information of the serving cell satisfies a first preset condition. Accordingly, the network device receives the notification, and may determine that the channel quality information of the serving cell meets the first preset condition, or may indicate that the terminal device starts to perform neighbor cell measurement. In this case, the terminal device performs the neighbor cell measurement without being allowed by the network device, that is, without triggering the terminal device to perform the neighbor cell measurement through the network device. By sending the notification to the network device, it is beneficial to avoid the conflict between the communication between the terminal device and the network device and the neighbor measurement of the terminal device.
In an implementation manner, the notification may carry the neighboring cell measurement configuration parameter when the network device for configuring the neighboring cell measurement configuration parameter is different from the network device corresponding to the serving cell. When the terminal device performs the neighbor cell measurement, the terminal device cannot receive the information sent by the network device corresponding to the serving cell. When the network device for configuring the neighbor cell measurement configuration parameters is different from the network device corresponding to the serving cell, the network device corresponding to the serving cell cannot know the neighbor cell measurement configuration parameters configured in the terminal device, and cannot know when the terminal device performs neighbor cell measurement. By carrying the neighbor cell measurement configuration parameters configured in the terminal device in the notification, the network device corresponding to the serving cell can acquire the neighbor cell measurement configuration parameters, thereby being beneficial to avoiding the conflict between the communication between the terminal device and the network device and the neighbor cell measurement of the terminal device.
It should be noted that the first preset condition (for example, the preset reference signal received power threshold and the preset distance threshold) may be configured by the network (for example, issued in a system message or a proprietary signaling), or may be agreed by a protocol, or may be set by a default of the terminal device, or may be set and changed by the user, which is not limited in this embodiment of the present application.
Step S202: and the terminal equipment initiates an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result before detecting the RLF.
In the embodiment of the present application, after obtaining the measurement result of the neighboring cell, the terminal device may initiate an RRC connection reestablishment procedure for the target neighboring cell even if the terminal device has not detected the RLF. Compared with the RRC connection reestablishment process initiated after the RLF is detected, the terminal device initiates the RRC connection reestablishment before the RLF is detected, which is beneficial to ensuring data transmission of the terminal device and reducing the influence on the service of the terminal device. In addition, since the current NB-IoT terminal device initiates the RRC connection reestablishment procedure for the target neighbor cell to replace the cell after detecting the RLF. Therefore, a long time delay exists when the cell is changed, so that the terminal equipment still keeps communication with the serving cell in a poor channel state, more power and wireless resources are consumed, and a communication service of the terminal equipment is greatly influenced by a long-time interruption. By implementing the embodiment of the application, the time delay of the NB-IoT terminal equipment for changing the cell is favorably shortened, so that the service quality of the NB-IoT terminal equipment is ensured.
Specifically, the specific implementation manner in which the terminal device initiates the RRC connection reestablishment procedure for the target neighboring cell in the multiple neighboring cells according to the neighboring cell measurement result may be: the terminal equipment determines a target neighbor cell from the plurality of neighbor cells according to the neighbor cell measurement result; and initiating an RRC connection reestablishment process aiming at the target neighbor cell. In an implementation manner, the target neighboring cell may be a neighboring cell with the best channel quality among the multiple neighboring cells, or the target neighboring cell may be a neighboring cell with an evaluation value of a channel quality parameter larger than a preset parameter threshold among the multiple neighboring cells. The preset parameter threshold may be configured by a network, or the preset parameter threshold may be agreed by a protocol, or may be set by default by a terminal device, or may be set and changed by a user, which is not limited in this embodiment of the present application. It should be noted that, the number of the neighboring cells in the plurality of neighboring cells whose evaluation values of the channel quality parameter are greater than the parameter threshold may be one or more. When the number of the neighboring cells of which the evaluated values of the channel quality parameters are greater than the parameter threshold is multiple, the target neighboring cell may be any one of the neighboring cells of which the evaluated values of the channel quality parameters are greater than the parameter threshold, or the target neighboring cell may be the neighboring cell of which the evaluated value is the largest among the neighboring cells of which the evaluated values of the channel quality parameters are greater than the parameter threshold.
In an implementation manner, when the terminal device determines that a target neighboring cell is within a coverage of a serving cell, when the embodiment of the present application is applied to a scenario where the terminal device moves, the terminal device may predict which neighboring cell is to be within a coverage of the next neighboring cell, and at this time, the target neighboring cell may be the neighboring cell predicted by the terminal device. Optionally, the terminal device may predict the target neighboring cell according to the historical moving path; or, the terminal device may predict the target neighboring cell by combining coverage information delivered by the network device according to a destination input by the user in the terminal device, which is not limited in this embodiment of the present application.
In this embodiment of the present application, the initiation, by the terminal device, of the RRC connection reestablishment process for the target neighboring cell may refer to: the terminal device sends an RRC connection reestablishment request (i.e., an RRC connection request) to a network device (e.g., a base station) corresponding to the target neighboring cell. After receiving the RRC connection reestablishment request, the network device corresponding to the target neighboring cell may reallocate the radio resource to the terminal device. The network device may then send an RRC connection reestablishment (i.e., RRC connection request) message to the terminal device, which may be used to indicate the newly allocated radio resources. After receiving the RRC connection reestablishment message, the terminal device may perform radio resource configuration according to the message, and send an RRC connection reestablishment complete (i.e., RRC connection reestablishment complete) message to the network device. And the terminal equipment completes the RRC connection reestablishment process aiming at the target neighbor cell.
In the embodiment of the present application, the terminal device initiates RRC connection reestablishment before detecting the RLF, which is beneficial to ensure data transmission of the terminal device and reducing the impact on the service of the terminal device.
Referring to fig. 3, fig. 3 is a flowchart illustrating another neighboring cell measurement method provided in an embodiment of the present application, where the method describes in detail how a terminal device initiates an RRC connection reestablishment procedure for a target neighboring cell according to a neighboring cell measurement result. The execution main body of steps S301 to S302 is a terminal device or a chip in the terminal device, and the following description will take the terminal device as the execution main body of the neighbor cell measurement method as an example. The method may include, but is not limited to, the steps of:
step S301: the method comprises the steps that under the condition that terminal equipment is in a Radio Resource Control (RRC) connection state, a neighbor cell measurement result is obtained; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the terminal device.
It should be noted that, the execution process of step S301 may refer to the detailed description of step S201 in fig. 2, and is not described herein again.
Step S302: before the terminal device detects the radio link failure RLF, the terminal device initiates an RRC connection reestablishment process aiming at the target neighbor cell in the plurality of neighbor cells under the condition that the channel quality information of the target neighbor cell meets a second preset condition.
In this embodiment of the present application, after obtaining the measurement result of the neighboring cell, the terminal device may further determine whether there is a neighboring cell in the plurality of neighboring cells, where the channel quality information meets a second preset condition. If the channel quality information exists, the terminal equipment can take any adjacent cell of which the channel quality information meets a second preset condition as a target adjacent cell; or, the terminal device may take the found neighboring cell whose first channel quality information satisfies the second preset condition as the target neighboring cell; or, the terminal device may use, as the target neighboring cell, a neighboring cell with the best channel quality in the neighboring cells whose channel quality information satisfies the second preset condition, which is not limited in this embodiment of the present application. The fact that the channel quality information of the target neighboring cell meets the second preset condition can be represented as: the channel quality of the target adjacent cell is better. Through the method, on one hand, the terminal equipment initiates RRC connection reestablishment before the RLF is detected, which is beneficial to avoiding the influence of the RLF on the service of the terminal equipment; on the other hand, the target neighbor cell has better channel quality, which is beneficial for the terminal device to obtain better service and avoids unnecessary power and wireless resource consumption caused by the terminal device still keeping communication with the serving cell when the channel quality of the serving cell is worse.
In one implementation, the channel quality information may include an estimate of a channel quality parameter; the channel quality information of the target neighboring cell satisfying the second preset condition may include, but is not limited to, one or more of the following:
1. the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the evaluation value of the channel quality parameter of the service cell of the terminal equipment is larger than a first preset threshold value, wherein the first preset threshold value is larger than or equal to 0, namely the target adjacent cell has better channel quality than the service cell; 2. the evaluation value of the channel quality parameter of the target neighboring cell is greater than a second preset threshold value, and the evaluation value of the channel quality parameter of the serving cell is less than a third preset threshold value; the second preset threshold is not less than (i.e., greater than or equal to) the third preset threshold, that is, the channel quality of the serving cell is poor, the channel quality of the target neighbor cell is better, and the channel quality of the target neighbor cell is better than that of the serving cell;
3. and the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the fourth preset threshold is greater than the fifth preset threshold, namely the channel quality of the target adjacent cell is good enough.
It should be noted that the second preset condition, the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, and the fifth preset threshold may all be configured by a network (for example, issued in a system message or a proprietary signaling), or agreed by a protocol, or may be set by a terminal device by default, or may be set and changed by a user, which is not limited in this embodiment of the present application.
In the embodiment of the present application, on one hand, the terminal device initiates RRC connection reestablishment before detecting the RLF, which is beneficial to avoiding the RLF from affecting the service of the terminal device; on the other hand, the terminal device determines a target neighboring cell whose channel quality information meets a second preset condition, and performs RRC connection reestablishment for the target neighboring cell, which is beneficial for the terminal device to obtain a better service, and avoids unnecessary power and radio resource consumption caused by the terminal device still communicating with the serving cell when the channel quality of the serving cell is poor.
Referring to fig. 4, fig. 4 is a flowchart illustrating a further method for measuring a neighboring cell according to an embodiment of the present application, where the method describes in detail that a network device sends first indication information to a terminal device when determining that a serving cell of the terminal device meets a first preset condition, so that the terminal device can perform neighboring cell measurement according to a neighboring cell measurement configuration parameter. The execution main body of step S401 is a network device or a chip in the network device, and the execution main bodies of steps S402 to S403 are terminal devices or chips in the terminal devices, and the following description will take the terminal devices and the network device as the execution main bodies of the neighbor cell measurement method as an example. The method may include, but is not limited to, the steps of:
step S401: the method comprises the steps that network equipment sends first indication information to terminal equipment under the condition that a service cell of the terminal equipment meets a first preset condition; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the network device is a network device corresponding to the serving cell.
In this embodiment of the present application, the serving cell of the terminal device meeting the first preset condition may indicate that: the channel quality of the serving cell is poor, degraded or will be degraded. In this case, the terminal device may perform neighbor cell measurement to determine a suitable target neighbor cell, so that the terminal device replaces the serving cell with the target neighbor cell, which is beneficial to ensuring data transmission of the terminal device. Specifically, the network device sends the first indication information to the terminal device to indicate the terminal device to perform the neighbor cell measurement. Under the condition that a service cell of the terminal equipment meets a first preset condition, the network equipment sends first indication information to the terminal equipment to indicate the terminal equipment to carry out neighbor cell measurement, so that the terminal equipment is favorable for obtaining neighbor cell measurement results more timely, and further the RRC connection reconstruction is favorable for carrying out more timely, the influence on the service of the terminal equipment is reduced, and the unnecessary resource consumption caused by the fact that the terminal equipment carries out neighbor cell measurement under the condition that the service cell does not meet the first preset condition is avoided.
In one implementation, the network device may determine that the serving cell of the terminal device satisfies the first preset condition by: the network equipment acquires at least one of the following parameters: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), successful receiving repetition times, repeated sending times, coverage enhancement grade, transmitting power, downlink wireless link block error rate, link level of a PDCCH (physical downlink control channel) which is reliably received at a specific block error rate, distance between a coverage center of the serving cell and the terminal equipment, load of the serving cell or scheduling information of the serving cell, and judging whether the serving cell meets a first preset condition or not according to the acquired information. Optionally, the terminal device reports reference signal received power, RSRP, of the serving cell, and if the network device determines that the reference signal received power of the serving cell of the terminal device is lower than a preset reference signal received power threshold, the network device may determine that the serving cell of the terminal device meets a first preset condition. Optionally, if the distance between the coverage center of the serving cell and the terminal device exceeds a preset distance threshold, the network device may determine that the serving cell meets a first preset condition. Optionally, if the load of the serving cell is greater than a preset load, the network device may determine that the serving cell meets a first preset condition. The load of the serving cell is greater than the predetermined load, which may affect the quality of the signal received by the terminal device in the serving cell. The load of the serving cell being greater than the preset load may refer to: the number of the terminal devices accessing the serving cell is larger than the preset number. At this time, the network device instructs the terminal device to perform the neighbor cell measurement, so that the terminal device can determine a suitable neighbor cell (e.g., a neighbor cell with a smaller load) according to the neighbor cell measurement result, and reestablish access to the neighbor cell through RRC connection. It should be noted that, for different cells, the preset load and the preset number may be the same or different. For example, the preset number may be different for cells with different upper limit numbers of access devices. It should be further noted that both the preset load and the preset number may be configured by the network (for example, issued in a system message or a proprietary signaling), or may be agreed by a protocol, or may be set by a default of the terminal device, or may be set and changed by a user, which is not limited in this embodiment of the present application.
The scheduling information of the serving cell may reflect the channel quality of the serving cell. In one implementation, the scheduling information of the serving cell may include a maximum number of RRC repetitions configured by a network device corresponding to the serving cell. The network device may configure the maximum number of RRC repetitions for the cell according to a variation of channel quality of the cell. Optionally, the network device may configure a larger maximum number of RRC repetitions for the cell when the channel quality of the cell is degraded; in the event that the channel quality of a cell becomes good, the network device may configure a smaller maximum number of RRC repetitions for the cell. In an implementation manner, if the maximum number of times of RRC repetition is greater than a first preset number of times, the network device may determine that the serving cell meets a first preset condition, that is, may determine that the terminal device needs to perform neighbor cell measurement. If the maximum number of times of RRC repetition is less than or equal to the first preset number of times, the network device may determine that the serving cell does not satisfy the first preset condition, that is, may determine that the terminal device does not need to perform neighbor cell measurement.
In another implementation, the scheduling information of the serving cell may include a repetition number indicated in Downlink Control Information (DCI). Optionally, the network device may select the repetition number from the number range according to a variation of channel quality of the cell, and indicate the repetition number through the DCI. The network device may select a larger number of repetitions when the channel quality of the cell becomes poor; the network device may select a smaller number of repetitions in case the channel quality of the cell becomes good. Wherein the number range may be preset by the network device. In an implementation manner, if the repetition number indicated in the DCI is greater than a second preset number, the network device may determine that the serving cell meets a first preset condition, that is, may determine that the terminal device needs to perform neighbor cell measurement. If the repetition number indicated in the DCI is less than or equal to the second preset number, the network device may determine that the serving cell does not satisfy the first preset condition, that is, may determine that the terminal device does not need to perform neighbor cell measurement. The DCI is carried by a Physical Downlink Control Channel (PDCCH), and may also be used to indicate uplink and downlink resource allocation, hybrid automatic repeat request (HARQ) information, power control, and the like. The PDCCH is a physical channel and is used to carry downlink scheduling information. It should be noted that, both the first preset number and the second preset number may be configured by a network (for example, issued in a system message or a proprietary signaling), or may be agreed by a protocol, or may be set by a terminal device as a default, or may be set and changed by a user, which is not limited in this embodiment of the present application.
In one implementation, the terminal device may measure a serving cell to obtain channel quality information of the serving cell; judging whether the channel quality information of the serving cell meets a first preset condition or not according to the measured channel quality information of the serving cell; and sending second indication information to the network device corresponding to the serving cell under the condition that the channel quality information of the serving cell meets a first preset condition, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition. Accordingly, when the network device receives the second indication information from the terminal device, it may be determined that the channel quality information of the serving cell satisfies the first preset condition.
The neighbor cell measurement configuration parameters are parameters which are configured for the terminal equipment by the network equipment and are needed to be used when neighbor cell measurement is carried out. The neighbor cell measurement configuration parameter may be used to indicate one or more of a time duration, a period, a Timing Advance (TA), and a start position. The information (i.e., one or more of the duration, the period, the TA, and the starting position) indicated by the neighbor cell measurement configuration parameter may be used to determine the time domain resources configured by the network device for the neighbor cell measurement. For example, the duration and/or period may be used to determine time domain resources configured for neighbor measurements.
It should be noted that the network device may configure, for the terminal device, a time domain resource required for performing one time of neighbor cell measurement, or may configure, for the terminal device, a series of time domain resources required for performing multiple times of neighbor cell measurements. It should be further noted that, when the network device configures a series of time domain resources for the terminal device, the network device may instruct the terminal device to perform one time of neighbor cell measurement according to one time domain resource in the series of time domain resources, or the network device may instruct the terminal device to perform multiple times of neighbor cell measurement according to part or all of the time domain resources in the series of time domain resources. The configured time domain resource can be regarded as a measurement occasion for performing neighbor cell measurement.
The duration may be duration of time domain resources configured for neighbor cell measurement by the pointer. The starting position refers to the starting position of the time domain resource configured for the neighbor cell measurement. For example, the starting position is a subframe in the system frame. A time domain resource can be determined by combining the duration and the starting position. If the interval duration between the initial positions of two adjacent time domain resources in the series of time domain resources is the same, the interval duration is the period. Optionally, under the condition that the neighboring cell measurement configuration parameter does not indicate the period, it may be considered that the neighboring cell measurement configuration parameter indicates the terminal device to perform a neighboring cell measurement; when the neighboring cell measurement configuration parameter indicates a period, it may be considered that the neighboring cell measurement configuration parameter indicates that the terminal device performs periodic neighboring cell measurement.
The TA means that the uplink packet sent by the terminal device is sent out at a corresponding time in advance in order to make the uplink packet arrive at the network device at a desired time. TA can be considered as a negative offset (negative offset) between the starting time when the terminal device receives the downlink subframe and the time when the uplink subframe is transmitted. The network device can control the time when the uplink signal from different terminal devices reaches the network device by appropriately controlling the offset of each terminal device. For example, for a terminal device farther from the network device, due to a larger transmission delay, it is necessary to transmit uplink data earlier than for a terminal device closer to the network device.
In an implementation manner, the neighboring cell measurement configuration parameter may be used to indicate one or more of a duration, a period, a Timing Advance (TA), and a start position, and may also be used to indicate the number of measurements. The measurement times may be used to indicate the times of performing neighbor measurement by the terminal device. It should be noted that, when the number of times of the measurement is multiple, the multiple time domain resources used for performing the multiple neighbor measurements may have a periodic characteristic or may not have a periodic characteristic, which is not limited in this embodiment of the present application. Specifically, when the plurality of time domain resources used for the multiple times of neighbor cell measurements do not have a periodic characteristic, the time domain resource corresponding to each time of neighbor cell measurements may be determined through the neighbor cell measurement configuration parameter. The characteristic that the plurality of time domain resources have periodicity may refer to: the starting positions of the time domain resources have a periodic rule; or the time-domain resources have the same duration and the starting positions have periodic regularity. In addition, under the condition that the number of times of measurement is one, whether the neighboring cell measurement configuration parameter indicates a period or not, it can be considered that the neighboring cell measurement configuration parameter indicates the terminal device to perform one neighboring cell measurement.
In an implementation manner, the first indication information may be specifically used to instruct the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter. At this time, the number of time domain resources configured for the neighbor cell measurement determined according to the information (i.e., one or more of the duration, the period, the TA, and the starting position) indicated by the neighbor cell measurement configuration parameter may be one or more. If the terminal device performs the neighboring cell measurement according to the neighboring cell measurement configuration parameter, and then the neighboring cell measurement is needed subsequently, the network device may send the first indication information to the terminal device again to indicate the terminal device to perform the neighboring cell measurement again. Optionally, the step of using the first indication information to instruct the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter may refer to: and instructing the terminal device to perform a neighboring cell measurement within a time period, or instructing the terminal device to start performing a neighboring cell measurement after a certain time period elapses after the terminal device receives the first instruction information.
In another implementation manner, the first indication information may be specifically used to instruct the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter. At this time, according to the information indicated by the configuration parameter for the neighbor cell measurement, the determined number of time domain resources configured for the neighbor cell measurement is multiple, and the multiple time domain resources have a periodic characteristic. By the method, the network equipment sends the first indication information to the terminal equipment once, so that the terminal equipment can be indicated to carry out multiple adjacent cell measurements, and signaling resources are saved.
It should be noted that the neighboring cell measurement configuration parameter may be carried in the first indication information and sent to the terminal device, may also be agreed by a protocol, and may also be configured for the terminal device by the network device (for example, configured for the terminal device in a dedicated signaling), which is not limited in this embodiment of the present application. It should be further noted that the neighboring cell measurement configuration parameter may be configured by a network device corresponding to the current serving cell of the terminal device, or may be configured by a network device corresponding to a historical serving cell of the terminal device. By the method, the configuration parameters of the neighboring cell measurement can be configured for the terminal equipment once and then used in different cells without re-configuring each cell, which is beneficial to saving signaling resources. In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to a serving cell (of the terminal device currently), the aforementioned second indication information may include the neighboring cell measurement configuration parameter. When the terminal device performs the neighbor cell measurement, the terminal device cannot receive the information sent by the network device corresponding to the serving cell of the terminal device. If the network device for configuring the neighbor cell measurement configuration parameters is different from the network device corresponding to the serving cell, the network device corresponding to the serving cell cannot know the neighbor cell measurement configuration parameters configured in the terminal device, and cannot know when the terminal device performs neighbor cell measurement. This may occur as follows: the network device corresponding to the serving cell sends information to the terminal device during the process of performing neighbor cell measurement by the terminal device, which may result in that the terminal device cannot receive the information and the information is lost. In this case, the neighboring cell measurement configuration parameter configured in the terminal device is carried in the second indication information, so that the network device corresponding to the serving cell can obtain the neighboring cell measurement configuration parameter, thereby being beneficial to avoiding a conflict between communication between the terminal device and the network device and neighboring cell measurement of the terminal device.
In one implementation, the serving cell of the terminal device may interact with a historical serving cell to obtain the neighbor cell measurement configuration parameter. Optionally, the network device corresponding to the serving cell may send a parameter request to the network device corresponding to the historical serving cell, so as to request to obtain the neighboring cell measurement configuration parameter. Optionally, the network device corresponding to the historical serving cell may actively send the neighboring cell measurement configuration parameter to the network device corresponding to the serving cell. The network device corresponding to the history serving cell may be the network device for configuring the neighboring cell measurement configuration parameter.
In an implementation manner, the network device may further configure the neighboring cell measurement configuration parameter for the terminal device through an RRC reconfiguration procedure, or issue the neighboring cell measurement configuration parameter to the terminal device in other information except the first indication information. After the terminal equipment changes the cell, if the adjacent cell measurement configuration parameters are not configured, the network equipment can configure the adjacent cell measurement configuration parameters for the terminal equipment through an RRC reconfiguration flow; if the terminal device has been configured with the neighboring cell measurement configuration parameters, the configured neighboring cell measurement configuration parameters may be used to perform neighboring cell measurement. Therefore, signaling resources for RRC reconfiguration after cell replacement can be saved.
In the embodiment of the present application, when the terminal device has configured the neighboring cell measurement configuration parameter, the network device sends the first indication information to the terminal device to instruct the terminal device to perform the neighboring cell measurement according to the neighboring cell measurement configuration parameter. In this process, the first indication information may be regarded as being used for activating the neighbor cell measurement configuration parameter. In other words, after configuring the neighboring cell measurement configuration parameter for the terminal device, the neighboring cell measurement configuration parameter does not take effect immediately (i.e., the terminal device does not use the neighboring cell measurement configuration parameter for performing the neighboring cell measurement), but takes effect after receiving the first indication information.
In an implementation manner, the first indication information may be carried in a medium access control control element (MAC CE), or may be carried in a MAC Protocol Data Unit (PDU) subheader, or may be carried in other information (such as DCI), which is not limited in this embodiment of the present invention. After the terminal equipment changes the cell, compared with the method that the adjacent cell measurement configuration parameters are configured for the terminal equipment again through an RRC reconfiguration process, the method and the device activate the adjacent cell measurement configuration parameters through the first indication information carried by the MAC CE (or the MAC PDU subheader), are beneficial to triggering and stopping the adjacent cell measurement more flexibly, and are beneficial to saving signaling resources.
In an optional implementation manner, the first indication information may be sent by the network device by:
in the method 1, the first indication information may be carried in a MAC CE for transmission, where the terminal device may be instructed to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter when a logical channel number (LCID) field in the MAC CE is a specific value. For example, in the structure of the MAC CE shown in table 1, the LCID may be newly defined to be 10001 for the current standard, so as to instruct the terminal device to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter, or may instruct the terminal device to perform the neighbor cell measurement by using another bit value, for example, an undefined value (for example, a reserved value) in the current standard, which is not limited in this application.
TABLE 1
R F2 E LCID
Or, the first indication information may be sent through a MAC PDU subheader, where the terminal device may be instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter when an LCID field in the MAC PDU subheader is a specific value. For example, in the structure of the MAC PDU subheader shown in table 2, when the LCID is a specific value 01011 or 01111 or another bit value, the terminal device is instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter.
TABLE 2
R F2 E LCID
In the mode 2, the first indication information may be carried in the MAC CE for transmission, where the terminal device may be instructed to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter when an LCID field in the MAC CE is a specific value. For example, in the structure of the MAC CE shown in table 3, an index value (index) of an LCID may be newly added to the current standard to be 33 or 46 or another index value, so as to instruct the terminal device to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter.
TABLE 3
R R LCID
Or, the first indication information may be sent through a MAC PDU subheader, where the terminal device may be instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter when an LCID field in the MAC PDU subheader is a specific value. For example, in the structure of the MAC PDU subheader shown in table 4, when the LCID index is 33 or 46 or other index values, the terminal device is instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameters.
TABLE 4
R R LCID
In the mode 3, the first indication information may be sent through a MAC PDU subheader, where the terminal device may be instructed to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter when an F2 field in the MAC PDU subheader is a specific value. For example, in the structure of the MAC PDU subheader shown in table 2, when F2 is a specific value 1 or another value, it is used to instruct the terminal device to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In the method 4, the first indication information may be sent through a MAC PDU subheader, where the terminal device may be instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter when an R field in the MAC PDU subheader is a specific value.
For example, in the structure of the MAC PDU subheader shown in table 2, when R is a specific value 1 or another value, it means that the terminal device performs neighbor cell measurement according to the neighbor cell measurement configuration parameter.
Or, for example, in the structure of the MAC PDU subheader shown in table 4, when R is a specific value 1 or another value, R is used to instruct the terminal device to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In the mode 5, the first indication information may be sent through a MAC PDU subheader, where the terminal device may be instructed to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter when an F field in the MAC PDU subheader is a specific value. For example, in the structure of the MAC PDU subheader shown in table 5, when F is a specific value 1 or another value, F is used to instruct the terminal device to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter.
TABLE 5
Figure BDA0002560819900000161
Or, for example, in the structure of the MAC PDU subheader shown in table 6, when F is a specific value 1 or another value, F is used to instruct the terminal device to perform the neighbor cell measurement according to the neighbor cell measurement configuration parameter.
TABLE 6
Figure BDA0002560819900000162
It should be noted that, when the payload (payload) of the MAC PDU is not 0 (that is, the value of L is not 0), the payload may also carry auxiliary information indicating that the terminal device performs neighbor cell measurement, for example, a cell identifier of a neighbor cell to be measured.
As an example, in the structures of the MAC CE and the MAC PDU subheader shown in tables 1, 2, and 5, the L field indicates the length of a corresponding MAC Service Data Unit (SDU) or a MAC CE that can be large or small, and the unit is byte; the F2 field and the F field jointly indicate the size of the L field; the E field indicates whether there are more fields in the MAC header; the R field indicates a reserved bit. In the structures of the MAC CE and the MAC PDU subheader shown in tables 3, 4, and 6, the L field indicates the length of a corresponding MAC Service Data Unit (SDU) or a MAC CE that can be large or small, and the unit is byte; the F field indicates the size of the L field; the R field indicates a reserved bit.
In an implementation manner, the network device may further send third indication information to the terminal device, where the third indication information may be used to indicate that the terminal device stops the neighbor cell measurement. In other words, the third indication information is used to deactivate (disable) the neighbor measurement configuration parameter. The power consumption of the terminal equipment can be increased by performing the neighbor cell measurement, and the more the neighbor cells are measured, the more the increased power consumption is obvious. The network device can avoid the terminal device from performing neighbor cell measurement all the time by sending the third indication information, thereby being beneficial to reducing the power consumption of the terminal device.
In one implementation, the network device may send the third indication information to the terminal device when determining that the serving cell of the terminal device satisfies the third preset condition. The serving cell of the terminal device satisfying the third preset condition may indicate that: the channel quality of the serving cell is better. In other words, the terminal device keeps communicating with the serving cell in the current channel state, so that the terminal device can keep normal operation of communication service; or the terminal equipment does not need to continue to carry out neighbor cell measurement; alternatively, the terminal device does not need to change cells. By the method, the third indication information is sent to the terminal equipment under the condition that the channel quality of the service cell is good, so that the terminal equipment can be prevented from carrying out unnecessary adjacent cell measurement or replacing the cell when unnecessary, and the power consumption of the terminal equipment is reduced.
In one implementation, the network device may determine that the serving cell of the terminal device satisfies the third preset condition by:
mode 1: the network equipment acquires at least one of the following parameters: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), successful receiving repetition times, repeated sending times, coverage enhancement grade, transmitting power, downlink wireless link block error rate, link level of a PDCCH (physical downlink control channel) which is reliably received at a specific block error rate, distance between a coverage center of the serving cell and the terminal equipment, load of the serving cell or scheduling information of the serving cell, and judging whether the serving cell meets a third preset condition or not according to the obtained information. Optionally, the terminal device reports reference signal received power, RSRP, of the serving cell, and if the network device determines that the reference signal received power of the serving cell of the terminal device is higher than a preset reference signal received power threshold, the network device may determine that the serving cell of the terminal device meets a third preset condition. Optionally, the scheduling condition information of the serving cell may include the maximum number of RRC repetitions configured by the network device corresponding to the serving cell or the number of repetitions indicated in DCI, and if the maximum number of RRC repetitions is less than or equal to the first preset number, the network device may determine that the serving cell satisfies a third preset condition; if the repetition number indicated in the DCI is less than or equal to the second preset number, the network device may determine that the serving cell meets a third preset condition. Optionally, if the distance between the coverage center of the serving cell and the terminal device does not exceed the preset distance threshold, the network device may determine that the serving cell meets a third preset condition. Optionally, if the load of the serving cell is less than or equal to the preset load, the network device may determine that the serving cell meets a third preset condition. The load of the serving cell being less than or equal to the preset load may refer to: the number of the terminal devices accessing the serving cell is larger than the preset number.
Mode 2: the network device receives fourth indication information from the terminal device, where the fourth indication information may be used to indicate that a serving cell of the terminal device satisfies a third preset condition. In one implementation, the terminal device may measure the serving cell to obtain channel quality information (e.g., an estimated value of a channel quality parameter) of the serving cell; judging whether the channel quality information of the serving cell meets a third preset condition or not according to the measured channel quality information of the serving cell; and sending the fourth indication information to the network device corresponding to the serving cell when the channel quality information of the serving cell meets a third preset condition. For example, if the evaluation value of the channel quality parameter of the serving cell (see the detailed description of step S201) is greater than the sixth preset threshold, the terminal device may determine that the channel quality information of the serving cell satisfies the third preset condition. The evaluation value of the channel quality parameter of the serving cell is greater than the sixth preset threshold, which may indicate that the channel quality of the serving cell is good enough.
It should be noted that, both the third preset condition and the sixth preset threshold may be configured by the network (for example, issued in a system message or a proprietary signaling), or may be agreed by a protocol, or may be set by a default by the terminal device, or may be set and changed by the user, which is not limited in this embodiment of the present application.
It should be further noted that the third indication information may be carried in the MAC CE, or may be carried in a MAC PDU subheader, or may be carried in other information (such as DCI), which is not limited in this embodiment of the present invention. The manner of carrying the third indication information in the MAC CE (or the MAC PDU subheader) is similar to the manner of carrying the first indication information in the MAC CE (or the MAC PDU subheader), and reference may be specifically made to corresponding contents in tables 1 to 6, which is not described herein again.
In one implementation, before step S401 or S401, the network device may further obtain capability information of the terminal device, where the capability information may be used to indicate whether the terminal device has a capability of performing RRC connection reestablishment before detecting RLF. The capability information may be sent to the network device by the terminal device, or may be obtained by the network device of the serving cell through interaction with the network device of the history serving cell. Optionally, the capability information may be explicit, for example, the capability information may indicate that the terminal device has the capability of RRC connection re-establishment before detecting RLF, or the capability information may indicate that the terminal device supports neighbor cell measurement in an RRC connected state. Optionally, the capability information may also be implicit, for example, if the network device receives second indication information sent by the terminal device, or if the network device of the serving cell obtains the neighboring cell measurement configuration parameter of the terminal device by interacting with the network device of the historical serving cell, the terminal device is considered to have the capability of performing RRC connection reestablishment before detecting the RLF, or the terminal device supports performing the neighboring cell measurement in an RRC connected state. At this time, the network device may send first indication information to the terminal device when the serving cell satisfies a first preset condition; the first indication information may be used to indicate that the terminal device performs neighbor cell measurement according to the neighbor cell measurement configuration parameter before detecting the RLF. When the serving cell meets the third preset condition, the network device may send third indication information to the terminal device to indicate the terminal device to stop performing the neighbor cell measurement.
In one implementation, before step S401 or S401, the network device may further determine whether the terminal device turns on the following functions: and performing RRC connection reestablishment before the RLF is detected, or supporting the neighbor cell measurement in an RRC connection state. Whether the terminal device turns on the function may be explicitly or implicitly informed by the terminal device to the network device. For example, the terminal device may send an indication message to the network device, where the indication message may indicate whether the terminal device turns on the function. Or, if the network device receives the fourth indication information sent by the terminal device, it may be considered that the terminal device has started the function. At this time, the network device may send the first indication information to the terminal device when the serving cell satisfies the first preset condition, so as to indicate that the terminal device performs the neighbor cell measurement according to the neighbor cell measurement configuration parameter before detecting the RLF. When the serving cell meets the third preset condition, the network device may send third indication information to the terminal device to indicate the terminal device to stop performing the neighbor cell measurement.
Step S402: under the condition that the terminal equipment is in a Radio Resource Control (RRC) connection state, measuring a plurality of adjacent cells of the serving cell according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results; the neighbor cell measurement result includes channel quality information of the plurality of neighbor cells.
Specifically, when the terminal device receives the first indication information from the network device corresponding to the serving cell, it may be determined that the serving cell satisfies the first preset condition at this time, that is, it may be determined that the terminal device needs to perform the neighbor cell measurement. The specific implementation manner of the terminal device measuring the multiple neighboring cells of the serving cell according to the neighboring cell measurement configuration parameter may be: and the terminal equipment determines the time domain resources configured for the neighbor cell measurement according to the neighbor cell measurement configuration parameters, and further measures a plurality of neighbor cells of the serving cell on the time domain resources.
Step S403: and the terminal equipment initiates an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result before detecting the RLF.
It should be noted that, the execution process of step S403 may refer to step S202 in fig. 2 or step S302 in fig. 3, and details are not repeated here.
By implementing the embodiment of the application, the network device sends the first indication information to the terminal device to indicate the terminal device to perform the neighbor cell measurement when the serving cell of the terminal device meets the first preset condition, so that the terminal device is facilitated to obtain the neighbor cell measurement result more timely, further, the terminal device is facilitated to determine a proper target neighbor cell more timely to perform RRC connection reestablishment, and the influence on the service of the terminal device is reduced.
In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of a network device and a terminal device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the network device and the terminal device may include a hardware structure and a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Some of the above functions may be implemented by a hardware structure, a software module, or a hardware structure plus a software module.
Fig. 5 is a schematic structural diagram of a communication device 50 according to an embodiment of the present disclosure. The communication device 50 shown in fig. 5 may comprise a processing unit 501 and a communication unit 502. The communication unit 502 may include a transmitting unit for implementing a transmitting function and/or a receiving unit for implementing a receiving function, and the communication unit 502 may implement a transmitting function and/or a receiving function. The communication unit may also be described as a transceiver unit.
The communication device 50 may be a terminal device, a device in the terminal device, or a device that can be used in cooperation with the terminal device. Alternatively, the communication device 50 may be a network device, a device in a network device, or a device that can be used in cooperation with a network device.
The communication device 50 is a terminal apparatus: a processing unit 501, configured to obtain a neighboring cell measurement result when the communication apparatus 50 is in a radio resource control, RRC, connected state; the neighbor cell measurement results include channel quality information for multiple neighbor cells of the serving cell of communications apparatus 50; a communication unit 502, configured to initiate an RRC connection reestablishment procedure for a target neighboring cell in the multiple neighboring cells according to the neighboring cell measurement result before detecting the radio link failure RLF.
In one implementation, the communication unit 502 may further be configured to: receiving first indication information from a network device corresponding to the serving cell, where the first indication information is used to indicate the communication device 50 to perform neighbor cell measurement according to the neighbor cell measurement configuration parameter; the first indication information is sent when the network device determines that the serving cell meets a first preset condition; the processing unit 501 may specifically be configured to: and measuring the plurality of adjacent cells according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results.
In one implementation, the first indication information is specifically used to instruct the communication device 50 to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to instruct the communication device 50 to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the processing unit 501 may be further configured to: measuring the serving cell to obtain channel quality information of the serving cell; the communication unit 502 may also be configured to: and sending second indication information to the network equipment under the condition that the channel quality information of the serving cell meets the first preset condition, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition.
In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to the serving cell, the second indication information may include the neighboring cell measurement configuration parameter.
In one implementation, the communication unit 502 may further be configured to: third indication information is received from the network device, the third indication information being used for instructing the communication apparatus 50 to stop the neighbor cell measurement.
In one implementation, the communication unit 502 may specifically be configured to: and initiating an RRC connection reestablishment process aiming at the target neighbor cell under the condition that the channel quality information of the target neighbor cell meets a second preset condition.
In one implementation, the channel quality information includes an estimate of a channel quality parameter; the channel quality information of the target neighboring cell satisfying the second preset condition may include one or more of the following: the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the evaluation value of the channel quality parameter of the serving cell is greater than a first preset threshold value; the evaluation value of the channel quality parameter of the target neighboring cell is greater than a second preset threshold value, and the evaluation value of the channel quality parameter of the serving cell is less than a third preset threshold value; the second preset threshold is not less than a third preset threshold; and the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the fourth preset threshold is greater than the fifth preset threshold.
The communication device 50 is a network device: a processing unit 501, configured to determine that a serving cell of a terminal device meets a first preset condition; a communication unit 502, configured to send first indication information to the terminal device, so that the terminal device can measure multiple neighboring cells of the serving cell according to a neighboring cell measurement configuration parameter, to obtain a neighboring cell measurement result; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises channel quality information of the plurality of neighbor cells; the communication device 50 is a network device corresponding to the serving cell.
In an implementation manner, the first indication information is specifically used for indicating the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the communication unit 502 may be further configured to receive second indication information from the terminal device, where the second indication information is used to indicate that the channel quality information of the foregoing serving cell meets the first preset condition.
In one implementation, in a case that the communication apparatus for configuring the neighbor cell measurement configuration parameter is different from the communication apparatus 50 corresponding to the serving cell, the second indication information may include the neighbor cell measurement configuration parameter.
In an implementation manner, the communication unit 502 may further be configured to send third indication information to the terminal device, where the third indication information is used to instruct the terminal device to stop the neighbor cell measurement.
In an implementation manner, the processing unit 501 may further be configured to obtain scheduling information of the serving cell; and determining that the serving cell meets a first preset condition according to the scheduling condition information.
In one implementation, the scheduling information includes a radio resource control, RRC, maximum number of repetitions configured by the communications apparatus 50; the processing unit 501 may specifically be configured to: and if the maximum repetition times is greater than a first preset time, determining that the serving cell meets a first preset condition.
In one implementation, the scheduling information includes a repetition number indicated in the downlink control information DCI; the processing unit 501 may specifically be configured to: and if the repetition times are greater than a second preset time, determining that the serving cell meets a first preset condition.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication device 60 according to an embodiment of the present disclosure. The communication device 60 may be a network device, a terminal device, a chip, a system-on-chip, or a processor that supports the network device to implement the method, or a chip, a system-on-chip, or a processor that supports the terminal device to implement the method. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.
The communication device 60 may include one or more processors 601. The processor 601 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal chip, a DU or CU, etc.), execute a computer program, and process data of the computer program.
Optionally, one or more memories 602 may be included in the communication device 60, on which a computer program 603 may be stored, which computer program may be run on the communication device 60, such that the communication device 60 performs the methods described in the above-described method embodiments. Optionally, the memory 602 may further store data. The communication device 60 and the memory 602 may be provided separately or may be integrated together.
Optionally, the communication device 60 may further include a transceiver 604 and an antenna 605. The transceiver 604 may be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc., for implementing transceiving functions. The transceiver 604 may include a receiver and a transmitter, and the receiver may be referred to as a receiver or a receiving circuit, etc. for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmission circuit, etc. for implementing the transmission function.
The communication device 60 is a terminal apparatus: the processor 601 is configured to execute step S201 in fig. 2; step S301 in fig. 3 is performed; or step S402 in fig. 4. The transceiver 604 is configured to perform step S202 in fig. 2; step S302 in fig. 3 is executed; or step S403 in fig. 4.
The communication device 60 is a network device: the processor 601 is configured to determine that the serving cell of the terminal device satisfies the first preset condition in the embodiment shown in fig. 4. The transceiver 604 is configured to perform step S401 in fig. 4.
In one implementation, a transceiver may be included in the processor 601 for performing receive and transmit functions. The transceiver may be, for example, a transceiver circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.
In one implementation, the processor 601 may have a computer program 606 stored thereon, and the computer program 606 may be executed on the processor 601 to enable the communication device 60 to perform the method described in the above method embodiment. The computer program 606 may be solidified in the processor 601, in which case the processor 601 may be implemented by hardware.
In one implementation, the communication device 60 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.
The communication apparatus in the above description of the embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 6. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication means may be:
(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;
(2) a set of one or more ICs, which optionally may also include storage means for storing data, computer programs;
(3) an ASIC, such as a Modem (Modem);
(4) a module that may be embedded within other devices;
(5) receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;
(6) others, and so forth.
For the case that the communication device may be a chip or a system of chips, see the schematic diagram of the chip shown in fig. 7. The chip shown in fig. 7 comprises a processor 701 and an interface 702. The number of the processors 701 may be one or more, and the number of the interfaces 702 may be more.
For the case that the chip is used for realizing the functions of the terminal device in the embodiment of the present application:
a processor 701, configured to obtain a neighboring cell measurement result when a terminal device is in a radio resource control RRC connected state; the neighbor cell measurement result includes channel quality information of a plurality of neighbor cells of a serving cell of the terminal device; an interface 702, configured to initiate an RRC connection reestablishment procedure for a target neighboring cell in the multiple neighboring cells according to the neighboring cell measurement result before detecting the radio link failure RLF.
In one implementation, the interface 702 may also be configured to: receiving first indication information from network equipment corresponding to the serving cell, wherein the first indication information is used for indicating terminal equipment to perform neighbor cell measurement according to neighbor cell measurement configuration parameters; the first indication information is sent when the network device determines that the serving cell meets a first preset condition, that is, the first indication information may be received when the serving cell meets the first preset condition; the processor 701 may be specifically configured to: and measuring the plurality of adjacent cells according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results.
In an implementation manner, the first indication information is specifically used for indicating the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the processor 701 may be further configured to: measuring the serving cell to obtain channel quality information of the serving cell; the interface 702 may also be used to: and sending second indication information to the network equipment under the condition that the channel quality information of the serving cell meets the first preset condition, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition.
In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to the serving cell, the second indication information may include the neighboring cell measurement configuration parameter.
In one implementation, the interface 702 may also be used to: and receiving third indication information from the network equipment, wherein the third indication information is used for indicating the terminal equipment to stop the neighbor cell measurement.
In one implementation, the interface 702 may be specifically configured to: and initiating an RRC connection reestablishment process aiming at the target neighbor cell under the condition that the channel quality information of the target neighbor cell meets a second preset condition.
In one implementation, the channel quality information includes an estimate of a channel quality parameter; the channel quality information of the target neighboring cell satisfying the second preset condition may include one or more of the following: the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the evaluation value of the channel quality parameter of the serving cell is greater than a first preset threshold value; the evaluation value of the channel quality parameter of the target neighboring cell is greater than a second preset threshold value, and the evaluation value of the channel quality parameter of the serving cell is less than a third preset threshold value; the second preset threshold is not less than a third preset threshold; and the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the fourth preset threshold is greater than the fifth preset threshold.
For the case that the chip is used to implement the functions of the network device in the embodiment of the present application:
a processor 701, configured to determine that a serving cell of a terminal device meets a first preset condition; an interface 702, configured to send first indication information to the terminal device, so that the terminal device can measure multiple neighboring cells of the serving cell according to a neighboring cell measurement configuration parameter, to obtain a neighboring cell measurement result; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result; the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises channel quality information of the plurality of neighbor cells; the network device is a network device corresponding to the serving cell.
In an implementation manner, the first indication information is specifically used for indicating the terminal device to perform a neighboring cell measurement according to the neighboring cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
In an implementation manner, the foregoing neighboring cell measurement configuration parameter is used to indicate a duration and/or a period, where the duration and/or the period is used to determine a time domain resource configured for neighboring cell measurement.
In one implementation, the interface 702 may be further configured to receive second indication information from the terminal device, where the second indication information is used to indicate that the channel quality information of the serving cell meets the first preset condition.
In an implementation manner, in a case that a network device for configuring the neighboring cell measurement configuration parameter is different from a network device corresponding to the serving cell, the second indication information may include the neighboring cell measurement configuration parameter.
In an implementation manner, the interface 702 may be further configured to send third indication information to the terminal device, where the third indication information is used to instruct the terminal device to stop the neighbor cell measurement.
In an implementation manner, the processor 701 may further be configured to obtain scheduling information of the serving cell; and determining that the serving cell meets a first preset condition according to the scheduling condition information.
In one implementation, the scheduling context information includes a radio resource control, RRC, maximum repetition number configured by the network device; the processor 701 may be specifically configured to: and if the maximum repetition times is greater than a first preset time, determining that the serving cell meets a first preset condition.
In one implementation, the scheduling information includes a repetition number indicated in the downlink control information DCI; the processor 701 may be specifically configured to: and if the repetition times are greater than a second preset time, determining that the serving cell meets a first preset condition.
Optionally, the chip further comprises a memory 703, the memory 703 being adapted to store the necessary computer programs and data.
Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.
The present application also provides a computer-readable storage medium having stored thereon a computer program comprising program instructions which, when executed by a computer, implement the functions of any of the above-described method embodiments.
The computer readable storage medium includes, but is not limited to, flash memory, hard disk, solid state disk.
The present application also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program is loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence.
At least one of the present applications may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the like, and the technical features described in "first", "second", "third", "a", "B", "C", and "D" are not in a sequential order or a size order.
The correspondence shown in the tables in the present application may be configured or predefined. The values of the information in each table are only examples, and may be configured to other values, which is not limited in the present application. When the correspondence between the information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the table in the present application, the correspondence shown in some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables may be other names understandable by the communication device, and the values or the expression of the parameters may be other values or expressions understandable by the communication device. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.
Predefinition in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (23)

1. A neighbor cell measurement method, comprising:
the method comprises the steps that under the condition that terminal equipment is in a Radio Resource Control (RRC) connection state, a neighbor cell measurement result is obtained; the neighbor cell measurement result comprises channel quality information of a plurality of neighbor cells of a serving cell of the terminal equipment;
and the terminal equipment initiates an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result before detecting the Radio Link Failure (RLF).
2. The method of claim 1, further comprising:
the terminal equipment receives first indication information from network equipment corresponding to the serving cell, wherein the first indication information is used for indicating the terminal equipment to carry out neighbor cell measurement according to neighbor cell measurement configuration parameters; the serving cell meets a first preset condition;
the obtaining of the neighbor cell measurement result includes:
and the terminal equipment measures the plurality of adjacent cells according to the adjacent cell measurement configuration parameters to obtain adjacent cell measurement results.
3. The method according to claim 2, wherein the first indication information is specifically used to instruct the terminal device to perform a neighbor cell measurement according to the neighbor cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
4. The method of claim 2, wherein the neighbor cell measurement configuration parameter is used to indicate a time duration and/or a period, and the time duration and/or the period are used to determine the time domain resources configured for neighbor cell measurement.
5. The method according to any one of claims 2 to 4, wherein before the terminal device receives the first indication information from the network device corresponding to the serving cell, the method further comprises:
the terminal equipment measures the serving cell to obtain channel quality information of the serving cell;
and under the condition that the channel quality information of the serving cell meets the first preset condition, the terminal equipment sends second indication information to the network equipment, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition.
6. The method of claim 5, wherein the second indication information includes the neighbor cell measurement configuration parameter when a network device for configuring the neighbor cell measurement configuration parameter is different from a network device corresponding to the serving cell.
7. The method according to any one of claims 2 to 6, further comprising:
and the terminal equipment receives third indication information from the network equipment, wherein the third indication information is used for indicating the terminal equipment to stop the adjacent cell measurement.
8. The method according to any one of claims 1 to 7, wherein the initiating, by the terminal device, the RRC connection reestablishment procedure for a target neighbor cell among the plurality of neighbor cells according to the neighbor cell measurement result includes:
and the terminal equipment initiates an RRC connection reestablishment process aiming at the target neighbor cell under the condition that the channel quality information of the target neighbor cell meets a second preset condition.
9. The method of claim 8, wherein the channel quality information includes an estimated value of a channel quality parameter; the channel quality information of the target neighboring cell meeting a second preset condition comprises one or more of the following items:
the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and the evaluation value of the channel quality parameter of the serving cell is greater than a first preset threshold value;
the evaluation value of the channel quality parameter of the target neighbor cell is greater than a second preset threshold value, and the evaluation value of the channel quality parameter of the serving cell is less than a third preset threshold value; wherein the second preset threshold is not less than the third preset threshold;
and the difference value between the evaluation value of the channel quality parameter of the target adjacent cell and a fourth preset threshold value is greater than a fifth preset threshold value.
10. A neighbor cell measurement method, comprising:
the network equipment determines that a service cell of the terminal equipment meets a first preset condition;
the network equipment sends first indication information to the terminal equipment so as to enable the terminal equipment to measure a plurality of adjacent cells of the service cell according to adjacent cell measurement configuration parameters to obtain adjacent cell measurement results; before the radio link failure RLF is detected, initiating an RRC connection reestablishment process aiming at a target neighbor cell in the neighbor cells according to the neighbor cell measurement result;
the first indication information is used for indicating the terminal equipment to perform neighbor cell measurement according to the neighbor cell measurement configuration parameters; the neighbor cell measurement result comprises channel quality information of the plurality of neighbor cells; the network device is a network device corresponding to the serving cell.
11. The method according to claim 10, wherein the first indication information is specifically used to instruct the terminal device to perform a neighbor cell measurement according to the neighbor cell measurement configuration parameter; or, the first indication information is specifically used to indicate the terminal device to perform periodic neighbor cell measurement according to the neighbor cell measurement configuration parameter.
12. The method of claim 10, wherein the neighbor cell measurement configuration parameter is used to indicate a time duration and/or a period, and the time duration and/or the period are used to determine the time domain resources configured for neighbor cell measurement.
13. The method of any one of claims 10 to 12, further comprising:
and the network equipment receives second indication information from the terminal equipment, wherein the second indication information is used for indicating that the channel quality information of the serving cell meets the first preset condition.
14. The method of claim 13, wherein the second indication information includes the neighbor cell measurement configuration parameter when a network device for configuring the neighbor cell measurement configuration parameter is different from a network device corresponding to the serving cell.
15. The method of any one of claims 10 to 14, further comprising:
and the network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating the terminal equipment to stop the adjacent cell measurement.
16. The method of any one of claims 10 to 12, further comprising:
the network equipment acquires scheduling condition information of the serving cell;
and the network equipment determines that the serving cell meets the first preset condition according to the scheduling condition information.
17. The method of claim 16, wherein the scheduling information comprises a Radio Resource Control (RRC) maximum number of repetitions configured by the network device;
the network device determines that the serving cell meets the first preset condition according to the scheduling condition information, and the determining includes:
if the maximum repetition times is greater than a first preset time, the network device determines that the serving cell meets the first preset condition.
18. The method according to claim 16, wherein the scheduling information includes a repetition number indicated in a downlink control information, DCI;
the network device determines that the serving cell meets the first preset condition according to the scheduling condition information, and the determining includes:
and if the repetition times are greater than a second preset time, the network equipment determines that the serving cell meets the first preset condition.
19. A communication device comprising means for performing the method of any of claims 1-9.
20. A communication apparatus, comprising means for performing the method of any of claims 10-18.
21. A communications apparatus, comprising a processor and a memory, the memory having stored therein program instructions, the processor executing the program instructions stored in the memory to cause the apparatus to perform the method of any of claims 1-9.
22. A communications apparatus, comprising a processor and a memory, the memory having stored therein program instructions, the processor executing the program instructions stored in the memory to cause the apparatus to perform the method of any of claims 10 to 18.
23. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a communication device, cause the communication device to perform the method of any of claims 1-9 or 10-18.
CN202010609816.XA 2020-06-29 2020-06-29 Neighbor cell measuring method and device Pending CN113938960A (en)

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WO2024065815A1 (en) * 2022-09-30 2024-04-04 北京小米移动软件有限公司 Neighbor cell measurement method and apparatus, storage medium, and chip

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US8953478B2 (en) * 2012-01-27 2015-02-10 Intel Corporation Evolved node B and method for coherent coordinated multipoint transmission with per CSI-RS feedback
CN103763730B (en) * 2014-02-25 2017-01-11 重庆邮电大学 Wireless link failure recovery enhancing method and system based on optimal reconstruction target cell selection
CN107809769B (en) * 2016-09-09 2019-12-20 电信科学技术研究院 Cell control method and device
US20220095194A1 (en) * 2018-09-27 2022-03-24 Sharp Kabushiki Kaisha Systems, devices, and methods for handling radio link failures in wireless relay networks
CN111031560B (en) * 2019-12-26 2022-05-03 重庆邮电大学 Service optimization method based on environment prejudgment

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Publication number Priority date Publication date Assignee Title
WO2023137589A1 (en) * 2022-01-18 2023-07-27 北京小米移动软件有限公司 Operation triggering method and apparatus, and storage medium
WO2024065815A1 (en) * 2022-09-30 2024-04-04 北京小米移动软件有限公司 Neighbor cell measurement method and apparatus, storage medium, and chip

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