CN114982269A - Measurement mode conversion method, terminal equipment and network equipment - Google Patents
Measurement mode conversion method, terminal equipment and network equipment Download PDFInfo
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Abstract
Measurement mode conversion method, terminal equipment and network equipment, wherein the method comprises the following steps: the terminal equipment switches between a first BFD measurement mode and a second BFD measurement mode according to the configuration message; wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since the beam failure instance indication was most recently received, and a number of beam success instance indications (S210). The conversion of the terminal equipment between different measurement modes can be realized.
Description
The present application relates to the field of communications, and more particularly, to a measurement mode switching method, a terminal device, and a network device.
The terminal device may perform a Beam Failure Detection (BFD) and a Beam Failure Recovery (BFR) procedure based on the network configuration. The beam failure detection means that the terminal device detects a beam failure on a synchronization Signal Block (SSB, SS/PBCH Block)/Channel State Information (CSI), Reference Signal (RS) configured by the network. The beam failure recovery is used for the terminal equipment to indicate a new SSB/CSI-RS to the serving cell.
In performing BFD, a Medium Access Control (MAC) layer of the terminal device detects a beam failure by continuously counting beam failure instance indications from a physical layer. For terminal equipment with energy-saving requirements, the physical layer measurement for BFD can perform relaxation measurement due to the consideration of energy saving; however, how the terminal device performs the switching of the BFD measurement mode is a problem that is not solved at present.
Disclosure of Invention
The embodiment of the application provides measurement mode conversion, terminal equipment and network equipment, and conversion of the terminal equipment among different BFD measurement modes can be achieved.
The embodiment of the application provides a measurement mode conversion method, which is applied to terminal equipment and comprises the following steps:
the terminal equipment switches between the first BFD measurement mode and the second BFD according to the configuration message;
wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was last received, and a number of beam success instance indications.
The embodiment of the application provides a measurement mode conversion method, which is applied to network equipment and comprises the following steps:
and sending a configuration message, wherein the configuration message is used for the terminal equipment to switch between the first BFD measurement mode and the second BFD measurement mode.
An embodiment of the present application provides a terminal device, including:
the MAC layer module is used for converting the terminal equipment between a first BFD measurement mode and a second BFD measurement mode according to the configuration message;
wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was most recently received, and a number of beam success instance indications.
An embodiment of the present application provides a network device, including:
and the sending module is used for sending a configuration message, and the configuration message is used for the terminal equipment to carry out conversion between the first BFD measurement mode and the second BFD measurement mode.
An embodiment of the present application provides a terminal device, including: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory to perform the method as described above as applied to any of the terminal devices.
An embodiment of the present application provides a network device, including: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory to perform the method as described above as applied to any one of the network devices.
The embodiment of the present application provides a chip, including: a processor for calling and running a computer program from a memory so that a device in which the chip is installed performs the method as described above as applied to any of the terminal devices.
The embodiment of the present application provides a chip, including: a processor for calling and running a computer program from a memory so that a device in which the chip is installed performs the method as described above as applied to any one of the network devices.
An embodiment of the present application provides a computer-readable storage medium for storing a computer program, where the computer program makes a computer execute the method as described above for any terminal device.
Embodiments of the present application provide a computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method as described above for any one of the network devices.
Embodiments of the present application provide a computer program product comprising computer program instructions for causing a computer to perform the method as described above for any one of the terminal devices.
Embodiments of the present application provide a computer program product comprising computer program instructions for causing a computer to perform the method as described above for any one of the network devices.
The embodiment of the application provides a computer program, and the computer program enables a computer to execute the method applied to the terminal device.
Embodiments of the present application provide a computer program, which causes a computer to perform the method as described above for any one of the network devices.
An embodiment of the present application provides a communication system, including:
a terminal device for performing the method as described above for any of the terminal devices;
network device for performing the method as described above for any of the network devices.
By using the embodiment of the application, after the configuration message is received, the terminal equipment realizes the conversion between different measurement modes according to the conversion conditions between different BFD measurement modes.
Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
Fig. 2 is a flowchart of an implementation of a measurement mode switching method 200 according to an embodiment of the present application.
Fig. 3 is a schematic diagram of measurement mode conversion according to a first embodiment of the present application.
Fig. 4 is a schematic diagram of measurement mode conversion according to the second embodiment of the present application.
Fig. 5 is a schematic diagram of measurement mode conversion in the third embodiment of the present application.
Fig. 6 is a flow chart of an implementation of a measurement mode switching method 600 according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present application.
Fig. 10 is a schematic configuration diagram of a communication apparatus 1000 according to an embodiment of the present application;
fig. 11 is a schematic block diagram of a chip 1100 according to an embodiment of the application.
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the embodiments of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. The objects described in the "first" and "second" may be the same or different.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, New Radio (NR) System, Evolution System of NR System, LTE-a System over unlicensed spectrum, NR (NR-b) System, UMTS (Universal Mobile telecommunications System), UMTS (UMTS) System, WLAN-b System over unlicensed spectrum, WiFi-b System, Wireless Local Area Network (WLAN) System, Wireless Local Area network (WiFi) System, GPRS (General Packet Radio Service, GPRS) System, GPRS (GPRS) System, LTE-b System, LTE-a System, NR System, LTE-b System over unlicensed spectrum, and LTE-b System over unlicensed spectrum, A next Generation communication (5th-Generation, 5G) system, other communication systems, and the like.
Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.
Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.
The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.
The embodiments of the present application have been described with reference to a network device and a terminal device, where: a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment, etc. The terminal device may be a Station (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, and a next generation communication system, for example, a terminal device in an NR Network or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device has full functions and large size, and can realize complete or partial functions without depending on a smart phone, for example: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.
The network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB, eNodeB) in LTE, a relay Station or an Access Point, a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, and the like.
In this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.
Fig. 1 exemplarily shows one network device 110 and two terminal devices 120, and optionally, the wireless communication system 100 may include a plurality of network devices 110, and each network device 110 may include other numbers of terminal devices 120 within the coverage area, which is not limited in this embodiment. The embodiment of the present application may be applied to one terminal device 120 and one network device 110, and may also be applied to one terminal device 120 and another terminal device 120.
Optionally, the wireless communication system 100 may further include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), which is not limited in this embodiment.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
An embodiment of the present application provides a method for measuring mode conversion, and fig. 2 is a flowchart of an implementation of a method 200 for measuring mode conversion according to an embodiment of the present application, including the following steps:
s210: the terminal equipment switches between a first BFD measurement mode and a second BFD measurement mode according to the configuration message;
wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was most recently received, and a number of beam success instance indications.
In some embodiments, the first BFD measurement mode is a normal BFD measurement mode, and the second BFD measurement mode is a relaxed BFD measurement mode (relaxing BFD). In the following description, the first BFD measurement mode refers to the same mode as the normal BFD measurement mode, and the second BFD measurement mode refers to the same mode as the relaxed BFD measurement mode.
Optionally, the measurement period of the second BFD measurement mode is greater than the measurement period of the first BFD measurement mode.
Optionally, a beam failure indication period (or referred to as a beam failure indication reporting period) of the second BFD measurement mode is greater than or equal to a beam failure indication period of the first BFD measurement mode.
In each measurement period, the physical layer may measure the radio link quality of the respective SSB/CSI-RS reference signals. In each beam failure indication period, the physical layer may evaluate the radio link quality of each SSB/CSI-RS reference signal in a past evaluation period, compare the evaluated radio link quality with a predetermined threshold, and send a beam failure instance indication to the MAC layer if the radio link quality corresponding to all the reference signals is lower than the predetermined threshold. In each beam failure indication period, the physical layer may or may not report the beam failure instance indication to the MAC layer.
It can be seen that in the relaxed BFD measurement mode, both the measurement period and the beam failure indication period may be greater than the corresponding periods in the normal BFD measurement mode; the terminal device has lower power consumption in the relaxed BFD measurement mode than in the normal BFD measurement mode.
In some embodiments, in the case that the terminal device is in the first BFD measurement mode, if a duration of time from the MAC layer receiving the beam failure instance indication from the physical layer last time reaches a preset threshold and/or the MAC layer receives consecutive M1 beam success instance indications from the physical layer, the terminal device switches to the second BFD measurement mode; wherein M1 is a positive integer.
For the case that the terminal device is switched from the normal BFD measurement mode to the relaxed BFD measurement mode, the embodiment of the present application proposes the following three implementation manners:
the first method comprises the following steps: the MAC layer maintains a first timer, the MAC layer starts/restarts the first timer each time the MAC layer receives the beam failure instance indication from the physical layer, and if the first timer is overtime, the MAC layer informs the physical layer to switch to a relaxed BFD measurement mode.
In some embodiments, the terminal device receives a configuration message, the configuration message comprising at least one of:
a first resource for beam failure detection;
the maximum duration of the first timer is equal to the preset threshold.
Optionally, the configuration message is a Radio Resource Control (RRC) reconfiguration message.
Optionally, the first resource includes an SSB/CSI-RS resource.
In a wave beam failure indication period of a first BFD measurement mode, when a MAC layer receives wave beam failure example indication from a physical layer, a first timer is started/restarted; and when the first timer is overtime, determining that the time length from the MAC layer to the MAC layer which receives the beam failure instance indication from the physical layer for the last time reaches a preset threshold value.
Optionally, the unit of the maximum duration of the first timer is a beam failure indication period of the first BFD measurement mode, that is, the maximum duration of the first timer is equal to the beam failure indication periods of the plurality of first BFD measurement modes. Alternatively, the unit of the maximum duration of the first timer is milliseconds (ms).
And the second method comprises the following steps: the MAC layer maintains a second timer, starts the second timer when a beam failure detection timer (beamfailure detection timer) is overtime, and informs the physical layer to switch to a relaxed BFD measurement mode if the second timer is overtime.
In some embodiments, the terminal device receives a configuration message, the configuration message comprising at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
and the sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer is equal to the preset threshold.
Optionally, the configuration message is an RRC reconfiguration message.
Optionally, the first resource includes an SSB/CSI-RS resource.
In some embodiments, during a beam failure indication period of the first BFD measurement mode, when the MAC layer receives a beam failure instance indication from the physical layer, a beam failure detection timer is started/restarted;
when the beam failure detection timer times out, starting/restarting a second timer;
and when the second timer is overtime, determining that the time length from the MAC layer to the MAC layer which receives the beam failure instance indication from the physical layer for the last time reaches a preset threshold value.
Optionally, the method further comprises: in the case where the second timer is running, the second timer is stopped when the MAC layer receives a beam failure instance indication from the physical layer.
In some embodiments, the maximum duration of the beam failure detection timer is in units of the beam failure indication periods of the first/second BFD measurement modes, i.e., the maximum duration of the beam failure detection timer is equal to the beam failure indication periods of the plurality of first/second BFD measurement modes. Alternatively, the maximum duration of the beam failure detection timer may be in units of milliseconds (ms).
In some embodiments, the maximum duration of the second timer is in units of the beam failure indication period of the first BFD measurement mode, i.e., the maximum duration of the second timer is equal to the beam failure indication periods of the plurality of first BFD measurement modes. Alternatively, the maximum duration of the second timer may be in units of milliseconds (ms).
And the third is that: the MAC layer, upon receiving successive M1 beam success instance indications from the physical layer, informs the physical layer to switch to a relaxed BFD measurement mode.
In some embodiments, the terminal device receives a configuration message, the configuration message comprising at least one of:
a first resource for beam failure detection;
m1, the M1 corresponding to the maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
Optionally, the configuration message is an RRC reconfiguration message.
Optionally, the first resource includes an SSB/CSI-RS resource.
In some embodiments, the terminal device initializes/resets the number of successful beam detection times to 0;
in a beam failure indication period of a first BFD measurement mode, when a MAC layer receives a beam success instance indication from a physical layer, increasing the number of times of successful beam detection by 1; until the number of beam detection success times reaches M1, it is determined that the MAC layer received consecutive M1 beam success instance indications from the physical layer.
Optionally, the number of successful beam detections is initialized/reset to 0 in at least one of:
the terminal equipment enters the first BFD measuring mode;
the terminal equipment is converted into the BFD measuring mode from the second BFD measuring mode;
in a beam failure indication period of a first BFD measurement mode, the MAC layer receives a beam failure instance indication from a physical layer;
in a beam failure indication period of the first BFD measurement mode, the MAC layer does not receive any indication;
a configuration message is received.
In some embodiments, further comprising:
the physical layer calculates the wireless link quality of the wave beam corresponding to the first resource;
transmitting a beam success instance indication to the MAC layer on a condition that a radio link quality of at least one beam is greater than or equal to a channel quality threshold. The channel quality threshold may be a Signal-to-Noise Ratio (SNR) threshold.
In some embodiments, the channel quality threshold is obtained by:
acquiring a first Block Error rate (BLER) threshold indicated and/or predefined by Radio Resource Control (RRC) signaling;
a channel quality threshold is determined based on the first BLER.
In some embodiments, the first BLER threshold may be configured at a cell granularity (per cell) through the RRC signaling described above.
In some embodiments, the preset first BLER threshold may be a default value, for example, the default value is 2% of a first BLER threshold of a Physical Downlink Control Channel (PDCCH).
In some embodiments, in the case where the terminal device is in the second BFD measurement mode, if the MAC layer receives N1 consecutive beam failure instance indications from the physical layer, the terminal device transitions to the first BFD measurement mode; wherein N1 is a positive integer.
For the case that the terminal device switches from the relaxed BFD measurement mode to the normal BFD measurement mode, the embodiment of the present application proposes the following implementation: the MAC layer, upon receiving N1 consecutive instances of beam failure indications from the physical layer, notifies the physical layer to switch to normal BFD measurement mode.
In some embodiments, a terminal device receives a configuration message comprising at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
n1, the N1 corresponding to a maximum number of beam detection failures of the departure criterion of the second BFD measurement mode.
In some embodiments, the number of beam detection failures is initialized/reset to 0;
in a beam failure indication period of a second BFD measurement mode, when a MAC layer receives a beam failure example indication from a physical layer, starting/restarting a beam failure detection timer, and increasing the number of times of beam detection failure by 1; until the number of beam detection failures reaches N1, it is determined that the MAC layer received N1 consecutive beam failure instance indications from the physical layer.
Optionally, the number of beam detection failures is initialized/reset to 0 in at least one of:
the beam failure detection timer times out;
a configuration message is received.
The present application will now be described in detail with reference to the accompanying drawings, in which specific embodiments are shown.
The first embodiment is as follows:
in this embodiment, the entry criteria for relaxing the BFD measurement mode include: the MAC layer maintains a first timer, the MAC layer starts/restarts the first timer each time the MAC layer receives the beam failure instance indication from the physical layer, and if the first timer is overtime, the MAC layer informs the physical layer to switch to a relaxed BFD measurement mode.
The departure criteria for the relaxed BFD measurement mode include: the MAC layer receives N1 consecutive beam failure instance indications from the physical layer.
The specific implementation process of the embodiment includes the following contents:
first, a UE in a connected state receives an RRC reconfiguration message of a base station (gNB) and acquires a radio connection monitoring configuration (radio link monitoring configuration) and/or a beam failure recovery configuration (beamfailure recovery configuration), where the RRC reconfiguration message includes:
a. a failure detection resource (failureDetectionResources) configuration, which comprises an SSB/CSI-RS resource configuration for beam failure detection;
b. maximum number of beam failure instances for beam failure detection (beamfailurelnstancememax count);
c. a beam failure detection timer (beamfailure detection timer) for beam failure detection;
d. the device comprises a first timer, wherein the first timer is a timer duration used for relaxing a BFD measurement mode entering criterion, the unit of the first timer is ms or a wave beam failure indication (reporting) period, and the first timer duration is greater than a beamFailureDetectiontimer duration.
N. N1 parameter, said N1 being the maximum number of beam failure instances for relaxing BFD measurement mode departure criterion, and N1 being less than beamfailurelnstancememaxcount. Instead of using RRC configuration, N1 may be a predefined value (e.g., default to 1).
Second, based on the network configuration, the UE defaults to a normal BFD measurement mode.
Thirdly, when the UE performs beam detection in the normal BFD measurement mode, and the MAC entity receives the beam failure instance indication from the physical layer, the MAC entity starts/restarts the first timer.
Fourth, when the MAC entity receives the reconfiguration of the first timer from the RRC layer, the COUNTER (BFI _ COUNTER) indicated by the beam failure instance is reset to 0.
Fifthly, when the UE performs beam detection in the normal BFD measurement mode, if the first timer is overtime, that is, the MAC entity does not receive the beam failure instance indication from the physical layer within the past continuous first timer duration, the UE enters the relaxed BFD measurement mode and indicates the requirement (requirement) for starting the relaxed BFD measurement mode to the physical layer;
sixthly, when the UE performs beam detection in the relaxed BFD measurement mode, if the BFI _ COUNTER reaches N1, that is, the MAC entity receives N1 continuous beam failure instance indications, the UE enters the normal BFD measurement mode and indicates to enable the requirement of the normal BFD measurement mode for the physical layer.
Fig. 3 is a schematic diagram of measurement mode conversion according to a first embodiment of the present application. In the embodiment shown in fig. 3, the beamfailure detection timer configured in the network is 1 beam failure indication (reporting) period, for example, 1 beam failure detection period (PBFD, period of BFD), the first timer is 8 PBFDs, and N1 is 2. In fig. 3, an upward arrow indicates that the MAC layer receives an example indication of beam failure sent by the physical layer; the arrow to the right of the first row indicates the correlation operation of the beamFailureDetectionTimer, and the arrow to the right of the second row indicates the correlation operation of the first timer.
As shown in fig. 3, in the normal BFD measurement mode, when a beam failure instance indication is received, the beamFailureDetectionTimer and the first timer are started/restarted; when the first timer times out, the UE enters a relaxed BFD measurement mode.
In the relaxed BFD measurement mode, the MAC layer maintains a COUNTER BFI _ COUNTER for beam failure detection, the initial value of which is 0. If the MAC layer receives the beam failure example indication from the physical layer, starting/restarting the beamFailureDetectionTimer, and accumulating the BFI _ COUNTER by 1; when the beamFailureDetectionTimer times out, BFI _ COUNTER is reset to 0. When BFI _ COUNTER reaches N1, the UE enters normal BFD measurement mode.
In this embodiment, the indication that the beam failure case is not received for a certain period of time continuously represents that the current beam channel condition is better, and it can be predicted that the probability of recent beam variation is not high, so that the UE can enter a relaxed BFD measurement mode with energy saving; receiving N1 beam failure instances indicating that the channel starts to deteriorate, the UE switching back to the normal RFD measurement mode may detect the beam failure as early as possible under the condition that the current beam continuously deteriorates, and then trigger the beam recovery process, thereby avoiding bringing more delay to the beam failure detection and the beam failure recovery.
Example two:
in this embodiment, the entry criteria for relaxing the BFD measurement mode include: and the MAC layer maintains a second timer, starts the second timer when the beamFailureDetectiontimer is overtime, and informs the physical layer to switch to a relaxed BFD measurement mode if the second timer is overtime.
The departure criteria for the relaxed BFD measurement mode include: the MAC layer receives N1 consecutive beam failure instance indications from the physical layer.
The specific implementation process of the embodiment includes the following contents:
first, a UE in a connected state receives an RRC reconfiguration message of a gNB, and acquires a radio link monitoring config and/or a beamfailure recovery config configuration, where the configuration includes:
a failuredetectionresources configuration, including SSB/CSI-RS resource configuration for beam failure detection;
b. maximum number of beam failure instances for beam failure detection (beamfailurelnstancememax count);
c. a beam failure detection timer (beamfailure detection timer) for beam failure detection;
d. and the second timer is used for relaxing the time length of a timer for BFD measurement entry criteria, and the unit of the second timer is ms or a beam failure indication (reporting) period.
N. N1 parameter, said N1 being the maximum number of beam failure instances for relaxing BFD measurement mode departure criterion, and N1 being less than beamfailurelnstancememaxcount. Instead of using RRC configuration, N1 may be a predefined value (e.g., default to 1).
Second, based on the network configuration, the UE defaults to a normal BFD measurement mode.
Thirdly, when the UE performs beam detection in the normal BFD measurement mode, and when the beamFailureDetectionTimer times out, the MAC entity starts/restarts the second timer.
Fourthly, when the MAC entity receives the beam failure instance indication transmitted by the physical layer, the MAC entity stops the second timer if the second timer is running.
Fifthly, when the MAC entity receives the reconfiguration of the second timer from the RRC layer, the BFI _ COUNTER is reset to 0.
Sixthly, when the UE performs beam detection in the normal BFD measurement mode, if the second timer is over time, that is, the MAC entity does not receive the beam failure instance indication from the physical layer within the time length of the last continuous beamfailure detection timer plus the time length of the second timer, the UE enters the relaxed BFD measurement mode and indicates to the physical layer to enable the requirement (requirement) of relaxed BFD.
Seventhly, when the UE performs beam detection in the relaxed BFD measurement mode, if the BFI _ COUNTER reaches N1, that is, the MAC entity receives consecutive N1 beam failure instance indications, the UE enters the normal BFD measurement mode and indicates to enable requirement of the normal BFD measurement mode to the physical layer.
Fig. 4 is a schematic diagram of measurement mode conversion in the second embodiment of the present application. In the embodiment shown in fig. 4, the network configuration beamFailureDetectionTimer is 1 beam failure indication (reporting) period, such as 1 PBFD, the second timer is 7 PBFD, and N1 is 2. In fig. 4, an upward arrow indicates that the MAC layer receives an example indication of beam failure sent by the physical layer; the arrow to the right of the first row indicates the correlation operation of the beamFailureDetectionTimer, and the arrow to the right of the second row indicates the correlation operation of the second timer.
As shown in fig. 4, in the normal BFD measurement mode, when a beam failure instance indication is received, the beamFailureDetectionTimer is started/restarted; the second timer is restarted/started when the beamFailureDetectionTimer times out. During operation of the second timer, the second timer is stopped if a beam failure instance indication is received. When the second timer times out, the UE enters a relaxed BFD measurement mode.
In the relaxed BFD measurement mode, the MAC layer maintains a COUNTER BFI _ COUNTER for beam failure detection, the initial value of which is 0. If the MAC layer receives the beam failure example indication from the physical layer, starting/restarting the beamFailureDetectionTimer, and accumulating the BFI _ COUNTER by 1; when the beamFailureDetectionTimer times out, BFI _ COUNTER is reset to 0. When BFI _ COUNTER reaches N1, the UE enters normal BFD measurement mode.
In this embodiment, the same as the first embodiment, that no beam failure indication is received for a continuous period of time represents that the current beam channel condition is better, so the UE can save energy and enter a relaxed BFD measurement mode; receiving N1 consecutive beam failure instances indicating that the channel starts to deteriorate, the UE switching back to the normal RFD measurement mode can avoid introducing more delay to the beam failure detection and beam failure recovery. Unlike the first embodiment, the timer for relaxing the BFD measurement mode entry criteria in the second embodiment is not started every time a beam failure indication is received from the physical layer, but is started after the beamfailure detection timer expires, which may avoid frequently starting/restarting the timer for relaxing the BFD measurement mode entry criteria, thereby making the operation of the timer simpler and the UE implementation complexity lower.
Example three:
in this embodiment, the entry criteria for relaxing the BFD measurement mode include: the MAC layer receives successive M1 beam success instance indications from the physical layer.
The departure criteria for the relaxed BFD measurement mode include: the MAC layer receives N1 consecutive beam failure instance indications from the physical layer.
The specific implementation process of the embodiment includes the following contents:
first, a UE in a connected state receives an RRC reconfiguration message of a gNB, and acquires a radio link monitoring config and/or a beamfailure recovery config configuration, where the configuration includes:
a failuredetectionresources configuration, including SSB/CSI-RS resource configuration for beam failure detection;
b. maximum number of beam failure instances for beam failure detection (beamfailurelnstancememax count);
c. a beam failure detection timer (beamFailureDetectionTimer) for beam failure detection;
m.1 parameter, said M1 being the maximum number of successful instances of a beam for relaxing BFD measurement mode entry criteria;
n. N1 parameter, said N1 being the maximum number of beam failure instances for relaxing BFD measurement mode departure criterion, and N1 being less than beamfailurelnstancememaxcount. Instead of using RRC configuration, N1 may be a predefined value (e.g., default to 1).
Secondly, defining an SNR threshold for determining the success of a beam, which may specifically adopt the following manner:
the snr threshold is determined based on the corresponding BLER threshold.
The BLER threshold corresponding to the snr threshold is configured by RRC signaling with cell granularity (per cell). Or a default value for the BLER threshold is predefined, for example, the default value is 2% for the BLER threshold for PDCCH.
Thirdly, the physical layer of the UE evaluates the quality of the radio link of the beams corresponding to the SSB/CSI-RS resources configured for beam failure detection in each beam failure indication (reporting) period, and if the quality of the radio channel of any one of the beams is higher than the SNR threshold for determining the beam success, the physical layer sends a beam success instance indication to the MAC layer.
Fourth, the UE maintains M1_ counter, as follows:
a. the UE initializes/resets M1_ counter when any one of the following conditions is satisfied:
-the UE switches from the relaxed BFD measurement mode to the normal measurement BFD mode, or the UE enters the normal BFD measurement mode;
the MAC layer does not receive the beam success instance indication from the physical layer in the current beam failure indication (reporting) period, and there are at least two cases:
case 1: the MAC layer does not receive any indication from the physical layer.
Case 2 the MAC layer receives a beam failure instance indication from the physical layer.
The UE receives a reconfiguration for the M1 parameter, or SSB/CSI-RS resource for beam failure detection.
And b, when the UE is in a normal BFD measurement mode and the MAC layer receives 1 beam success instance indication from the physical layer in the current beam failure indication (reporting) period, updating the M1_ counter. The M1_ counter is updated by self-incrementing M1_ counter by 1.
Fifth, based on network configuration, the UE defaults to normal BFD measurement mode.
Sixthly, when the UE performs beam detection in the normal BFD measurement mode, if M1_ counter reaches M1, that is, the MAC entity receives the successful instance indication of continuous M1 beams, the UE enters the relaxed BFD measurement mode and indicates to enable requirement of the relaxed BFD measurement mode for the physical layer;
seventhly, when the UE performs beam detection in the relaxed BFD measurement mode, if the BFI _ COUNTER reaches N1, that is, the MAC entity receives consecutive N1 beam failure instance indications, the UE enters the normal BFD measurement mode and indicates to enable requirement of the normal BFD measurement mode to the physical layer.
Fig. 5 is a schematic diagram of measurement mode conversion in the third embodiment of the present application. In the embodiment shown in fig. 5, the network configuration M1 is 8 and N1 is 2. In fig. 5, a solid arrow pointing upward indicates that the MAC layer receives an indication of a beam failure instance transmitted by the physical layer, and a dashed arrow pointing upward indicates that the MAC layer receives an indication of a beam success instance transmitted by the physical layer.
As shown in fig. 5, in the normal BFD measurement mode, the MAC layer maintains a counter M1_ counter for successful beam detection, and the initial value of M1_ counter is 0. If the MAC layer receives the beam success instance indication from the physical layer, starting/restarting the beamFailureDetectionTimer, and accumulating M1_ counter by 1; when the beamFailureDetectionTimer times out, M1_ counter is reset to 0. When M1_ counter reaches M1, the UE enters the relaxed BFD measurement mode.
In the relaxed BFD measurement mode, the MAC layer maintains a COUNTER BFI _ COUNTER for beam failure detection, the initial value of which is 0. If the MAC layer receives the beam failure example indication from the physical layer, the BeamFailureDetectionTimer is started/restarted, and the BFI _ COUNTER is accumulated by 1; when the beamFailureDetectionTimer times out, BFI _ COUNTER is reset to 0. When BFI _ COUNTER reaches N1, the UE enters normal BFD measurement mode.
In this embodiment, the successful instances of M1 continuous beams indicate that the representative channel is good enough to predict that the probability of recent link degradation is not great, so the UE can save energy and enter a relaxed BFD measurement mode; the continuous N1 beam failure instance indications represent the channel starting to deteriorate, and the UE switching back to the normal BFD measurement mode can avoid introducing more delay to the beam failure detection and beam failure recovery. In this embodiment, the physical layer is required to perform the determination of the success of the beam, and in addition, an inter-layer interface from the physical layer to the MAC layer may be added, or the indication information of the success of the beam may be added on the basis of the existing interface.
The embodiment of the application also provides a measurement mode conversion method, which can be applied to network equipment. Fig. 6 is a flowchart of an implementation of a measurement mode switching method 600 according to an embodiment of the present application, including the following steps:
s610: and sending a configuration message, wherein the configuration message is used for the terminal equipment to switch between the first BFD measurement mode and the second BFD measurement mode.
Optionally, the first BFD measurement mode is a normal BFD measurement mode, and the second BFD measurement mode is a relaxed BFD measurement mode.
In some embodiments, the configuration message comprises at least one of:
a first resource for beam failure detection; a maximum duration of a first timer equal to a preset threshold of the entry criteria of the second BFD measurement mode.
In some embodiments, the configuration message comprises at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
and the sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer is equal to a preset threshold value of the entry criterion of the second BFD measurement mode.
In some embodiments, the configuration message includes at least one of:
a first resource for beam failure detection;
m1, the M1 corresponding to the maximum number of successful beam detections for entry criteria of the second BFD measurement mode.
Optionally, the configuration message further includes: a first BLER threshold, the first BLER threshold being used to determine a channel quality threshold for successful detection of a beam.
In some embodiments, the configuration message comprises at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
n1, the N1 corresponding to a maximum number of beam detection failures of the departure criterion of the second BFD measurement mode.
An embodiment of the present application further provides a terminal device, and fig. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application, including:
a MAC layer module 710, configured to switch the terminal device between the first BFD measurement mode and the second BFD measurement mode according to the configuration message;
wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was most recently received, and a number of beam success instance indications.
In some embodiments, the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode. Optionally, the measurement period of the second BFD measurement mode is greater than the measurement period of the first BFD measurement mode. Optionally, the beam failure indication period of the second BFD measurement mode is greater than or equal to the beam failure indication period of the first BFD measurement mode.
In some embodiments, in a case where the terminal device is in the first BFD measurement mode, if a duration from a time when the MAC layer module received the beam failure instance indication from the physical layer module last time reaches a preset threshold and/or the MAC layer module receives M1 consecutive beam success instance indications from the physical layer module, the terminal device is switched to the second BFD measurement mode; wherein M1 is a positive integer.
In some embodiments, the MAC layer module 710 is further configured to receive a configuration message, the configuration message including at least one of:
a first resource for beam failure detection;
and the maximum duration of the first timer is equal to the preset threshold.
Optionally, the MAC layer module 710 is configured to,
in the beam failure indication period of the first BFD measurement mode, when the MAC layer module receives a beam failure instance indication from a physical layer module, starting/restarting a first timer; and when the first timer is overtime, determining that the time length from the MAC layer module to the MAC layer module which receives the beam failure example indication from the physical layer module for the last time reaches a preset threshold value.
In some embodiments, the maximum duration of the first timer is in units of a beam failure indication period of the first BFD measurement mode.
In some embodiments, the MAC layer module 710 is further configured to receive a configuration message, the configuration message including at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
and the sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer is equal to the preset threshold.
Optionally, the MAC layer module 710 is configured to,
starting/restarting a beam failure detection timer when the MAC layer module receives a beam failure instance indication from a physical layer module in a beam failure indication period of the first BFD measurement mode;
starting/restarting the second timer when the beam failure detection timer times out;
and when the second timer is overtime, determining that the time length from the MAC layer module to the MAC layer module which receives the beam failure example indication from the physical layer module for the last time reaches a preset threshold value.
Optionally, the MAC layer module 710 is further configured to, when the second timer is running, stop the second timer when the MAC layer module receives a beam failure instance indication from a physical layer module.
In some embodiments, the maximum duration of the beam failure detection timer is in units of a beam failure indication period of the first/second BFD measurement mode.
In some embodiments, the maximum duration of the second timer is in units of a beam failure indication period of the first BFD measurement mode.
In some embodiments, the MAC layer module 710 is further configured to receive a configuration message, the configuration message including at least one of:
a first resource for beam failure detection;
the M1, the M1 corresponding to a maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
Optionally, the MAC layer module 710 is configured to initialize/reset the number of successful beam detections to 0;
in a beam failure indication period of the first BFD measurement mode, when the MAC layer module receives a beam success instance indication from a physical layer module, increasing the beam detection success times by 1; until the number of beam detection successes reaches M1, it is determined that the MAC layer module received consecutive M1 beam success instance indications from the physical layer module.
Optionally, the MAC layer module 710 initializes/resets the number of successful beam detections to 0 in at least one of:
the terminal equipment enters the first BFD measurement mode;
the terminal equipment is converted into the first BFD measuring mode from the second BFD measuring mode;
the MAC layer module receives a beam failure instance indication from a physical layer module in a beam failure indication period of the first BFD measurement mode;
during a beam failure indication period of the first BFD measurement mode, the MAC layer module does not receive any indication;
the configuration message is received.
As shown in fig. 8, the terminal device further includes:
a physical layer module 820, configured to calculate a radio link quality of a beam corresponding to the first resource; in the event that the wireless link quality of at least one beam is greater than or equal to a channel quality threshold, a beam success instance indication is sent to the MAC layer module 710.
In some embodiments, the channel quality threshold is obtained by:
acquiring a BLER threshold indicated by RRC signaling and/or predefined;
a channel quality threshold is determined based on the first BLER.
In some embodiments, in the case where the terminal device is in the second BFD measurement mode, if the MAC layer module receives N1 consecutive beam failure instance indications from the physical layer module, then switching the terminal device to the first BFD measurement mode; wherein N1 is a positive integer.
Optionally, the MAC layer module 710 is further configured to receive a configuration message, where the configuration message includes at least one of the following:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
the N1, the N1 corresponding to a maximum number of beam detection failures for the departure criterion of the second BFD measurement mode.
Optionally, the MAC layer module 710 is configured to,
initializing/resetting the number of times of beam detection failure to 0;
in the beam failure indication period of the second BFD measurement mode, when the MAC layer module receives a beam failure instance indication from the physical layer module, starting/restarting a beam failure detection timer, and increasing the number of times of beam detection failure by 1; determining that the MAC layer module received N1 consecutive beam failure instance indications from the physical layer module until the number of beam detection failures reaches N1.
In some embodiments, the MAC layer module 710 is configured to initialize/reset the number of beam detection failures to 0 in at least one of:
the beam failure detection timer times out;
the configuration message is received.
In some embodiments, the configuration message includes: RRC reconfiguration message.
It should be understood that the above and other operations and/or functions of the modules in the terminal device according to the embodiment of the present application are respectively for implementing the corresponding flows of the terminal device in the method 200 of fig. 2, and are not described herein again for brevity.
An embodiment of the present application further provides a network device, and fig. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present application, including:
a sending module 910, configured to send a configuration message, where the configuration message is used for a terminal device to perform a conversion between a first BFD measurement mode and a second BFD measurement mode.
In some embodiments, the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode.
In some embodiments, the configuration message includes at least one of:
a first resource for beam failure detection;
a maximum duration of a first timer equal to a preset threshold of the entry criteria of the second BFD measurement mode.
In some embodiments, the configuration message comprises at least one of:
a first resource for beam failure detection;
the maximum duration of the beam failure detection timer;
a maximum duration of a second timer, a sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer being equal to a preset threshold of an entry criterion of the second BFD measurement mode.
In some embodiments, the configuration message comprises at least one of:
a first resource for beam failure detection;
m1, the M1 corresponding to the maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
Optionally, the configuration message further includes: a first BLER threshold, the first BLER threshold being used to determine a channel quality threshold for successful detection of a beam.
In some embodiments, the configuration message comprises at least one of: a first resource for beam failure detection; the maximum duration of the beam failure detection timer; n1, the N1 corresponding to a maximum number of beam detection failures for the departure criterion of the second BFD measurement mode.
It should be understood that the above and other operations and/or functions of the modules in the network device according to the embodiment of the present application are respectively for implementing the corresponding flows of the network device of the method 600 of fig. 6, and are not described herein again for brevity.
The embodiment of the application also provides a communication system, which comprises the terminal equipment and the network equipment.
Fig. 10 is a schematic configuration diagram of a communication apparatus 1000 according to an embodiment of the present application. The communication device 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 10, the communication device 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.
The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.
Optionally, as shown in fig. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and in particular, may transmit information or data to or receive information or data transmitted by other devices.
The transceiver 1030 may include a transmitter and a receiver, among others. The transceiver 1030 may further include an antenna, and the number of antennas may be one or more.
Optionally, the communication device 1000 may be a terminal device in the embodiment of the present application, and the communication device 1000 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the communication device 1000 may be a network device according to this embodiment, and the communication device 1000 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.
Fig. 11 is a schematic block diagram of a chip 1100 according to an embodiment of the application. The chip 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 11, the chip 1100 may further include a memory 1120. From the memory 1120, the processor 1110 can call and run a computer program to implement the method in the embodiment of the present application. The memory 1120 may be a separate device from the processor 1110, or may be integrated in the processor 1110.
Optionally, the chip 1100 may also include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.
Optionally, the chip 1100 may further include an output interface 1140. The processor 1110 may control the output interface 1140 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not repeated here. Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
The aforementioned processors may be general purpose processors, Digital Signal Processors (DSPs), Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general purpose processor mentioned above may be a microprocessor or any conventional processor etc.
The above-mentioned memories may be either volatile or nonvolatile memories, or may include both volatile and nonvolatile memories. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM).
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
In the above embodiments, all or part of the implementation may be 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 instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via 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 includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply any order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments 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 (71)
- A measurement mode conversion method is applied to terminal equipment and comprises the following steps:the terminal equipment switches between a first Beam Failure Detection (BFD) measuring mode and a second BFD measuring mode according to the configuration message;wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was most recently received, and a number of beam success instance indications.
- The method according to claim 1, wherein the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode.
- The method according to claim 1 or 2, wherein the measurement period of the second BFD measurement mode is greater than the measurement period of the first BFD measurement mode.
- The method according to any of claims 1 to 3, wherein the beam failure indication period of the second BFD measurement mode is greater than or equal to the beam failure indication period of the first BFD measurement mode.
- The method according to any one of claims 1 to 4,under the condition that the terminal equipment is in a first BFD measurement mode, if the time length from the MAC layer to the last time the MAC layer receives the beam failure instance indication from the physical layer reaches a preset threshold value and/or the MAC layer receives continuous M1 beam success instance indications from the physical layer, the terminal equipment is converted into a second BFD measurement mode; wherein M1 is a positive integer.
- The method of claim 5, further comprising: receiving a configuration message, the configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the first timer is equal to the preset threshold.
- The method of claim 6, wherein,in the beam failure indication period of the first BFD measurement mode, when the MAC layer receives the beam failure instance indication from the physical layer, starting/restarting a first timer; and when the first timer is overtime, determining that the time length from the MAC layer to the MAC layer which receives the beam failure example indication from the physical layer for the last time reaches a preset threshold value.
- The method according to claim 6 or 7, wherein the maximum duration of the first timer is in units of a beam failure indication period of the first BFD measurement mode.
- The method of claim 5, further comprising: receiving a configuration message, the configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;and the sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer is equal to the preset threshold.
- The method of claim 9, wherein,in the beam failure indication period of the first BFD measurement mode, when the MAC layer receives the beam failure instance indication from the physical layer, starting/restarting a beam failure detection timer;starting/restarting the second timer when the beam failure detection timer times out;and when the second timer is overtime, determining that the time length from the MAC layer to the MAC layer which receives the beam failure example indication from the physical layer for the last time reaches a preset threshold value.
- The method of claim 10, further comprising: stopping the second timer when the MAC layer receives a beam failure instance indication from the physical layer while the second timer is running.
- The method according to any one of claims 9 to 11, wherein the maximum duration of the beam failure detection timer is in units of a beam failure indication period of the first/second BFD measurement mode.
- The method of any of claims 9 to 11, wherein the maximum duration of the second timer is in units of a beam failure indication period of the first BFD measurement mode.
- The method of claim 5, further comprising: receiving a configuration message, the configuration message comprising at least one of:a first resource for beam failure detection;the M1, the M1 corresponding to a maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
- The method of claim 14, wherein,initializing/resetting the successful times of beam detection to 0;in the beam failure indication period of the first BFD measurement mode, when the MAC layer receives a beam success instance indication from a physical layer, increasing the beam detection success times by 1; until the number of beam detection successes reaches M1, it is determined that the MAC layer received consecutive M1 beam success instance indications from the physical layer.
- The method of claim 15, initializing/resetting the number of successful beam detections to 0 in at least one of:the terminal equipment enters the first BFD measurement mode;the terminal equipment is converted into the first BFD measuring mode from the second BFD measuring mode;in the beam failure indication period of the first BFD measurement mode, the MAC layer receives a beam failure instance indication from a physical layer;in the beam failure indication period of the first BFD measurement mode, the MAC layer does not receive any indication;the configuration message is received.
- The method of claim 15 or 16, further comprising:the physical layer calculates the wireless link quality of the wave beam corresponding to the first resource;transmitting a beam success instance indication to the MAC layer in the event that a radio link quality of at least one beam is greater than or equal to a channel quality threshold.
- The method of claim 17, wherein the channel quality threshold is obtained by:acquiring a first block error rate (BLER) threshold indicated by Radio Resource Control (RRC) signaling and/or predefined;and determining the channel quality threshold according to the first BLER threshold.
- The method according to any one of claims 1 to 4,under the condition that the terminal equipment is in the second BFD measurement mode, if the MAC layer receives continuous N1 beam failure example indications from the physical layer, the terminal equipment is converted into the first BFD measurement mode; wherein N1 is a positive integer.
- The method of claim 19, further comprising: receiving a configuration message, the configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;the N1, the N1 corresponding to a maximum number of beam detection failures of the departure criterion of the second BFD measurement mode.
- The method of claim 20, wherein,initializing/resetting the number of times of beam detection failure to 0;in the beam failure indication period of the second BFD measurement mode, when the MAC layer receives beam failure instance indication from the physical layer, starting/restarting a beam failure detection timer, and increasing the number of times of beam detection failure by 1; determining that the MAC layer received N1 consecutive beam failure instance indications from the physical layer until the number of beam detection failures reaches N1.
- The method of claim 21, initializing/resetting the number of beam detection failures to 0 in at least one of:the beam failure detection timer times out;the configuration message is received.
- The method of any of claims 6 to 18 and 20 to 22, wherein the configuration message comprises: RRC reconfiguration message.
- A measurement mode conversion method is applied to network equipment and comprises the following steps:and sending a configuration message, wherein the configuration message is used for the terminal equipment to switch between the first BFD measurement mode and the second BFD measurement mode.
- The method of claim 24, wherein the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode.
- The method of claim 24 or 25, wherein the configuration message comprises at least one of:a first resource for beam failure detection;a maximum duration of a first timer equal to a preset threshold of the entry criteria of the second BFD measurement mode.
- The method of claim 24 or 25, wherein the configuration message comprises at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;a maximum duration of a second timer, a sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer being equal to a preset threshold of an entry criterion of the second BFD measurement mode.
- The method of claim 24 or 25, wherein the configuration message comprises at least one of:a first resource for beam failure detection;m1, the M1 corresponding to the maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
- The method of claim 28, wherein the configuration message further comprises: a first BLER threshold, the first BLER threshold being used to determine a channel quality threshold for successful detection of a beam.
- The method of claim 24 or 25, wherein the configuration message comprises at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;n1, the N1 corresponding to a maximum number of beam detection failures for the departure criterion of the second BFD measurement mode.
- A terminal device, comprising:the MAC layer module is used for converting the terminal equipment between a first BFD measurement mode and a second BFD measurement mode according to the configuration message;wherein a switching condition between different BFD measurement modes is related to at least one of a number of beam failure instance indications, a length of time since a beam failure instance indication was most recently received, and a number of beam success instance indications.
- A terminal device according to claim 31, wherein the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode.
- A terminal device according to claim 31 or 32, wherein the measurement period of the second BFD measurement mode is greater than the measurement period of the first BFD measurement mode.
- A terminal device according to any one of claims 31 to 33, wherein the beam failure indication period of the second BFD measurement mode is greater than or equal to the beam failure indication period of the first BFD measurement mode.
- The terminal device of any of claims 31 to 34,under the condition that the terminal equipment is in a first BFD measurement mode, if the time length from the MAC layer module to the last time the beam failure instance indication from the physical layer module is received reaches a preset threshold value and/or the MAC layer module receives continuous M1 beam success instance indications from the physical layer module, converting the terminal equipment into a second BFD measurement mode; wherein M1 is a positive integer.
- The terminal device of claim 35, the MAC layer module further configured to receive a configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the first timer is equal to the preset threshold.
- The terminal device of claim 36, wherein the MAC layer module is configured to,in the beam failure indication period of the first BFD measurement mode, when the MAC layer module receives a beam failure instance indication from a physical layer module, starting/restarting a first timer; and when the first timer is overtime, determining that the time length from the MAC layer module to the MAC layer module which receives the beam failure example indication from the physical layer module for the last time reaches a preset threshold value.
- A terminal device according to claim 36 or 37, wherein the maximum duration of the first timer is in units of a beam failure indication period of the first BFD measurement mode.
- The terminal device of claim 38, the MAC layer module further configured to receive a configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;and the sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer is equal to the preset threshold.
- The terminal device of claim 39, wherein the MAC layer module is configured to,starting/restarting a beam failure detection timer when the MAC layer module receives a beam failure instance indication from a physical layer module in a beam failure indication period of the first BFD measurement mode;starting/restarting the second timer when the beam failure detection timer times out;and when the second timer is overtime, determining that the time length from the MAC layer module to the last time the beam failure example indication from the physical layer module is received reaches a preset threshold value.
- The terminal device of claim 40, wherein the MAC layer module is further configured to stop the second timer when the MAC layer module receives a beam failure instance indication from a physical layer module while the second timer is running.
- A terminal device according to any one of claims 39 to 41, wherein the maximum duration of the beam failure detection timer is in units of the beam failure indication period of the first/second BFD measurement mode.
- A terminal device according to any one of claims 39 to 41, wherein the maximum duration of the second timer is in units of a beam failure indication period of the first BFD measurement mode.
- The terminal device of claim 35, the MAC layer module further configured to receive a configuration message comprising at least one of:a first resource for beam failure detection;the M1, the M1 corresponding to a maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
- The terminal device of claim 44, wherein the MAC layer module is configured to initialize/reset a number of successful beam detection times to 0;in a beam failure indication period of the first BFD measurement mode, when the MAC layer module receives a beam success instance indication from a physical layer module, increasing the number of times of successful beam detection by 1; until the number of beam detection successes reaches M1, it is determined that the MAC layer module received consecutive M1 beam success instance indications from the physical layer module.
- The terminal device of claim 45, the MAC layer module initializes/resets the number of successful beam detection times to 0 on at least one of:the terminal equipment enters the first BFD measurement mode;the terminal equipment is converted from the second BFD measurement mode to the first BFD measurement mode;in a beam failure indication period of the first BFD measurement mode, the MAC layer module receives a beam failure instance indication from a physical layer module;during a beam failure indication period of the first BFD measurement mode, the MAC layer module does not receive any indication;the configuration message is received.
- The terminal device of claim 45 or 46, further comprising:a physical layer module, configured to calculate a quality of a wireless link of a beam corresponding to the first resource; transmitting a beam success instance indication to the MAC layer module if a wireless link quality of at least one beam is greater than or equal to a channel quality threshold.
- The terminal device of claim 47, wherein the channel quality threshold is obtained by:acquiring a first BLER threshold indicated and/or predefined by RRC signaling;and determining the channel quality threshold according to the first BLER threshold.
- The terminal device of any of claims 31 to 34,under the condition that the terminal equipment is in the second BFD measurement mode, if the MAC layer module receives continuous N1 beam failure instance indications from the physical layer module, the terminal equipment is converted into the first BFD measurement mode; wherein N1 is a positive integer.
- The terminal device of claim 49, the MAC layer module further configured to receive a configuration message comprising at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;the N1, the N1 corresponding to a maximum number of beam detection failures for the departure criterion of the second BFD measurement mode.
- The terminal device of claim 50, wherein the MAC layer module is configured to,initializing/resetting the number of times of beam detection failure to 0;in the beam failure indication period of the second BFD measurement mode, when the MAC layer module receives a beam failure instance indication from the physical layer module, starting/restarting a beam failure detection timer, and increasing the number of times of beam detection failure by 1; determining that the MAC layer module received N1 consecutive beam failure instance indications from the physical layer module until the number of beam detection failures reaches N1.
- The terminal device of claim 51, wherein the MAC layer module is configured to initialize/reset the number of failed beam detections to 0 when at least one of:the beam failure detection timer times out;the configuration message is received.
- The terminal device of any of claims 36 to 48 and 50 to 52, wherein the configuration message comprises: RRC reconfiguration message.
- A network device, comprising:and the sending module is used for sending a configuration message, and the configuration message is used for the terminal equipment to carry out conversion between the first BFD measurement mode and the second BFD measurement mode.
- A network device according to claim 54, wherein the first BFD measurement mode is a normal BFD measurement mode and the second BFD measurement mode is a relaxed BFD measurement mode.
- The network device of claim 54 or 55, wherein the configuration message comprises at least one of:a first resource for beam failure detection;a maximum duration of a first timer, the maximum duration of the first timer being equal to a preset threshold of the entry criterion of the second BFD measurement mode.
- The network device of claim 54 or 55, wherein the configuration message comprises at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;a maximum duration of a second timer, a sum of the maximum duration of the second timer and the maximum duration of the beam failure detection timer being equal to a preset threshold of an entry criterion of the second BFD measurement mode.
- The network device of claim 54 or 55, wherein the configuration message comprises at least one of:a first resource for beam failure detection;m1, the M1 corresponding to the maximum number of successful beam detections for the entry criteria of the second BFD measurement mode.
- The network device of claim 58, wherein the configuration message further comprises: a first BLER threshold, the first BLER threshold being used to determine a channel quality threshold for successful detection of a beam.
- The network device of claim 54 or 55, wherein the configuration message comprises at least one of:a first resource for beam failure detection;the maximum duration of the beam failure detection timer;n1, the N1 corresponding to a maximum number of beam detection failures of the departure criterion of the second BFD measurement mode.
- A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 23.
- A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 24 to 30.
- A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 23.
- A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 24 to 30.
- A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 23.
- A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 24 to 30.
- A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 23.
- A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 24 to 30.
- A computer program for causing a computer to perform the method of any one of claims 1 to 23.
- A computer program for causing a computer to perform the method of any one of claims 24 to 30.
- A communication system, comprising:a terminal device for performing the method of any one of claims 1 to 23;a network device configured to perform the method of any one of claims 24 to 30.
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| PCT/CN2020/083219 WO2021196162A1 (en) | 2020-04-03 | 2020-04-03 | Method for converting measurement modes, terminal device and network device |
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