CN109802731B - Wireless link monitoring method, mobile communication terminal and network side equipment - Google Patents
Wireless link monitoring method, mobile communication terminal and network side equipment Download PDFInfo
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- CN109802731B CN109802731B CN201711143644.6A CN201711143644A CN109802731B CN 109802731 B CN109802731 B CN 109802731B CN 201711143644 A CN201711143644 A CN 201711143644A CN 109802731 B CN109802731 B CN 109802731B
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Abstract
The invention provides a wireless link monitoring method, a mobile communication terminal and network side equipment, wherein the method comprises the following steps: calculating first receiving power of a target object and second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, wherein the target object is used as a wireless link monitoring reference signal to perform wireless link monitoring; and determining the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power. The target resource in the time slot of the target object which is used as the reference signal for monitoring the wireless link is adopted as the received signal/interference signal strength measurement resource by protocol convention, so that the condition that the additional signaling indicates the received signal strength/interference signal strength measurement resource can be avoided, and the system overhead is reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a wireless link monitoring method, a mobile communication terminal, and a network side device.
Background
In the existing communication system, due to factors such as interference and fading, a link between a network side device and a mobile communication terminal may fail to operate for a long time, and a radio link failure process may be initiated at this time.
In the prior art, a network side device configures X Radio link monitoring reference signals (RLM-RS) for a mobile communication terminal to perform Radio link monitoring and evaluate Radio link quality, where the Radio link quality is determined by a block error rate PDCCH-BLER of a Physical Downlink Control Channel (PDCCH-BLER) assumed.
If the hypothetical PDCCH BLER calculated by the X RLM-RSs is higher than a threshold value Q _ In, the mobile communication terminal reports In-sync (IS) to a higher layer. If the hypothetical PDCCH BLER calculated by the X RLM-RSs is lower than a threshold value Q _ Out, the mobile communication terminal reports Out-of-sync (OOS) to a high layer. If OOS is reported continuously for a certain number of times, the wireless link is considered to be failed.
Wherein the mobile communication terminal may obtain the estimate of the hypothetical PDCCH-BLER from a Signal to Interference plus Noise Ratio (SINR) or SINR-like (SINR-like) indicator. That is, as long as the estimated value of the SINR or SINR-like indicator is determined to be higher/lower than the corresponding threshold, the relationship between the hypothetical PDCCH-BLER and the Q _ in/Q _ out threshold in the current radio link can be determined.
Monitoring of the radio link based on SINR or SINR-like indicators requires measurement of signal power as well as interference and noise. In the prior art, a network side device needs to indicate a received signal/interference signal strength measurement resource to monitor a wireless link, so that the system overhead of a communication system is high.
Disclosure of Invention
The embodiment of the invention provides a wireless link monitoring method, a mobile communication terminal and network side equipment, which aim to solve the problem that the system overhead of a communication system is increased due to wireless link monitoring.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a wireless link monitoring method, applied to a mobile communication terminal, including:
calculating first receiving power of a target object and second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, wherein the target object is used as a wireless link monitoring reference signal to perform wireless link monitoring;
and determining the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power.
In a second aspect, an embodiment of the present invention further provides a mobile communication terminal, including:
the calculation module is used for calculating a first receiving power of a target object and a second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, wherein the target object is used as a wireless link monitoring reference signal to perform wireless link monitoring;
and the determining module is used for determining the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power.
In a third aspect, an embodiment of the present invention further provides a mobile communication terminal, including a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the radio link monitoring method.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above-mentioned radio link monitoring method.
In this way, in the embodiment of the present invention, the target resource in the time slot in which the target object for performing the radio link monitoring as the radio link monitoring reference signal is located is adopted as the received signal/interference signal strength measurement resource by the protocol convention, so that the received signal strength/interference signal strength measurement resource indicated by the extra signaling can be avoided, and therefore, the system overhead is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a radio link monitoring method according to an embodiment of the present invention;
fig. 2 is a structural diagram of an SS Block in the wireless link monitoring method according to the embodiment of the present invention;
fig. 3 is a second flowchart of a radio link monitoring method according to an embodiment of the present invention;
fig. 4 is a third flowchart of a radio link monitoring method according to an embodiment of the present invention;
fig. 5 is one of the structural diagrams of a mobile communication terminal according to an embodiment of the present invention;
fig. 6 is a second structural diagram of a mobile communication terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a wireless link monitoring method according to an embodiment of the present invention, as shown in fig. 1, including the following steps:
and 102, determining the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power.
The wireless link monitoring method provided by the embodiment of the invention is mainly applied to a mobile communication terminal and is used for controlling the monitoring of the wireless link.
In this step, the number and type of the target objects may be configured by the network side device. For example, the network side device may configure the number of target objects and the type of the target objects through radio resource control protocol RRC signaling. Specifically, in a 5G radio (new radio access) system, a CSI-RS (channel State Information Reference signal) or a synchronization signal Block SS Block is defined as a Reference signal for detecting a radio link, that is, the target object includes the CSI-RS or the synchronization signal Block SS Block.
In this embodiment, the network side device may configure, through RRC signaling, the mobile communication terminal to perform radio link monitoring RLM using CSI-RS or SS Block as a radio link monitoring reference signal RLM-RS. For example, in an embodiment, one or more CSI-RSs may be RLM as RLM-RSs; in another embodiment, RLM may be performed with one or more SS blocks as RLM-RS; in yet another embodiment, one or more CSI-RSs and one or more SS blocks may be simultaneously RLM as RLM-RSs.
In this embodiment, when monitoring the quality state of the wireless link of each target object, first, a first received power of the target object and a second received power of the target resource in the time slot where the target object is located are calculated. And then estimating the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power.
Specifically, when the target object is a CSI-RS, the first receiving power is the receiving power of the CSI-RS; when the target object is SS Block, the first reception power is the reception power of SS Block. The second received power is received power on the target resource, and may be, for example, total received power of all resources on the target resource or average received power of all resources.
In this way, in the embodiment of the present invention, the target resource in the time slot in which the target object for performing the radio link monitoring as the radio link monitoring reference signal is located is adopted as the received signal/interference signal strength measurement resource by the protocol convention, so that the received signal strength/interference signal strength measurement resource indicated by the extra signaling can be avoided, and therefore, the system overhead is reduced.
The target resource is a Received Signal Strength/interference Signal Strength measurement resource, and the corresponding OFDM symbol may be the same as an OFDM symbol measured by RSSI (Received Signal Strength Indication).
Further, the position definition manner of the target resource may be set according to actual needs, and in this embodiment, the target resource is defined in any one of the following manners:
the first definition mode is as follows: the first N orthogonal Frequency Division multiplexing (ofdm) (orthogonal Frequency Division multiplexing) symbols in the time slot in which the target object is located, where N is a positive integer.
In this embodiment, the value range of N may be set according to actual needs, and in this embodiment, in order to better reflect the quality of transmission of a PDCCH (Physical Downlink Control Channel), preferably, the value of N is between 1 and M, where M is the number of OFDM symbols of a core (Control resource set, a resource set for transmitting Control information, including time-frequency resources for transmitting the PDCCH) notified by a network side device through a radio resource Control protocol RRC signaling.
The second definition: all OFDM symbols of a slot in which the target object is located.
In this embodiment, all OFDM symbols of the slot in which the CSI-RS or SS Block is located may be used as the target resource.
The third definition: and determining a part of OFDM symbols of the time slot where the target object is located according to a preset rule.
In this embodiment, the definition rule of the partial OFDM symbol may be set according to actual needs, for example, the partial OFDM symbol may be an OFDM symbol where the RLM-RS is located, or an OFDM symbol other than the OFDM symbol where the RLM-RS is located. Specifically, in this embodiment, the preset rule includes:
if the target object is a channel state information reference signal (CSI-RS), the partial OFDM symbols are OFDM symbols where the CSI-RS is located, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols where the CSI-RS is located in a time slot where the CSI-RS is located;
and if the target object is a synchronous signal Block SS Block, the partial OFDM symbols are all OFDM symbols or partial OFDM symbols for transmitting the SS Block, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols for transmitting the SS Block in a time slot in which the SS Block is located.
Specifically, as shown in fig. 2, the structure of the SS Block generally includes two parts, one part is a Physical Broadcast Channel PBCH-RE (Physical Broadcast Channel-Resource Element) for carrying information, and the two parts are used for carrying a primary synchronization signal PSS and a secondary synchronization signal SSs; and the other part is a time pilot signal PBCH-DMRS-RE. In addition, the structure of the SS Block also includes an undefined part not defined layer, which is temporarily undefined, and does not transmit any content at present, and certainly, no new definition can be performed on the not defined layer part; if it is defined later, the defined content can also be transmitted. In fig. 2, X and Y represent the number of PRBs, which is not yet determined, and may be 20 or 4. DMRSs (Demodulation Reference signals) are equally spaced at a density of 1/4 on OFDM symbols occupied by PBCH and corresponding PRBs in fig. 2, i.e., 3 PBCH-DMRS-REs out of 12 consecutive REs.
In this embodiment, the number of OFDM symbols used for transmitting SS Block is generally 4, and one or more OFDM symbols may also be used as the target resource. When the partial OFDM symbol is an OFDM symbol for transmitting all or part of the SS Block, the partial OFDM symbol includes at least one of an OFDM symbol for transmitting a secondary synchronization signal SSs, an OFDM symbol for transmitting a primary synchronization signal PSS, and an OFDM symbol for transmitting a physical broadcast channel.
It should be understood that the target resource may be one or more OFDM symbols, and when the target resource is at least two OFDM symbols, the second received power is a total received power or an average received power on the target resource.
For example, in this embodiment, the quality state of the wireless link may be determined according to a comparison between a ratio of the first received power and the second received power and a preset value. Specifically, referring to fig. 3, in this embodiment, the step 102 includes:
in this step, for the calculation of the first received power:
if the target object is the CSI-RS, calculating the receiving power of the CSI-RS to obtain a first receiving power;
if the target object is CSI-RS, the receiving power of SSS can be calculated to obtain first receiving power, the receiving power of PSS can be calculated to obtain second receiving power, and the receiving power of PBCH-DMRS can be calculated to obtain second receiving power. In addition, the first received power can be obtained by calculating the total received power or the average received power of any two or three of the SSS, the PSS and the PBCH-DMRS.
For the calculation of the first received power:
if the second received power is the total received power, the received signal power on each OFDM symbol in the target resource may be first calculated, and then the sum of the received signal powers on all OFDM symbols in the target resource is obtained through summation calculation, where the sum of the received signal powers is the second received power.
If the second received power is the average received power, the signal received power on each OFDM symbol in the target resource may be calculated first, then the sum of the signal received powers on all OFDM symbols in the target resource is obtained through summation calculation, and finally the sum of the signal received powers is divided by the number of OFDM symbols in the target resource to obtain the second received power.
After the first received power a and the second received power B are calculated respectively, the ratio R is obtained by dividing the first received power a by the second received power B, where R is a/B.
In this embodiment, a mapping relationship between a hypothetical PDCCH-BLER and a first preset value R _ in and a second preset value R _ out may be preset, where the hypothetical PDCCH-BLER is correspondingly provided with a threshold value Q _ in and a threshold value Q _ out. The first preset value R _ in has a mapping relation with the threshold value Q _ in, and the second preset value R _ out has a mapping relation with the threshold value Q _ out.
When the ratio is greater than a first preset value R _ in corresponding to a threshold value Q _ in of the preset wireless link quality, the assumed PDCCH-BLER corresponding to the target object can be considered to be lower than Q _ in; when the ratio is smaller than a second preset value R _ out corresponding to a threshold value Q _ out of the preset wireless link quality, it can be considered that the assumed PDCCH-BLER corresponding to the target object is higher than Q _ out.
Specifically, in a certain target object, when the ratio is greater than a first preset value corresponding to a threshold Q _ in of a preset wireless link quality, it is determined that an assumed block error rate of a physical downlink control channel of a wireless link corresponding to the target object is lower than the threshold Q _ in; and when the ratio is smaller than a second preset value corresponding to a threshold value Q _ out of the preset wireless link quality, determining that the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the target object is higher than the threshold value Q _ out.
In this embodiment, since the ratio of the pilot power (i.e. the received power of the target object) to the received power of the specific OFDM symbol (i.e. the OFDM symbol of the target resource) is used as the Reference index of the hypothetical PDCCH-BLER, the calculation mode of the ratio is similar to the calculation mode of RSRQ (Reference Signal Receiving Quality), and similar calculation functions can be multiplexed with other modules, thereby reducing the calculation process of the system and improving the system performance.
It should be noted that, the network side device configures a plurality of radio link monitors for the mobile communication terminal, and when the mobile communication terminal reports the quality state of the radio link, the quality state of the radio link of the mobile communication terminal may be reported according to the number of the assumed block error rate of the physical downlink control channel of the radio link corresponding to the target object that is lower than the threshold Q in and the number of the assumed block error rate of the physical downlink control channel of the radio link corresponding to the target object that is higher than the threshold Q _ out in all target objects.
Specifically, if the mobile communication terminal is configured to perform wireless link monitoring of M target objects;
referring to fig. 4, after the step 102, the method further includes:
103, reporting the quality state of the wireless link of the mobile communication terminal as InSync when the assumed block error rate of the physical downlink control channel of the wireless link corresponding to at least N target objects is lower than the threshold value Q _ In; and when the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the M target objects is higher than the threshold value Q _ out, reporting that the quality state of the wireless link of the mobile communication terminal is OOS.
Wherein N is less than M. Specifically, when the assumed block error rate of the physical downlink control channel of the radio link corresponding to at least N target objects is lower than the threshold value Q _ in, it may be considered that the assumed PDCCH-BLER of the mobile communication terminal is lower than Q _ in; when the assumed block error rate of the physical downlink control channel of the radio link corresponding to the M target objects is higher than the threshold value Q _ out, it may be considered that the assumed PDCCH-BLER of the mobile communication terminal is higher than Q _ out.
Referring to fig. 5, fig. 5 is a block diagram of a mobile communication terminal according to an embodiment of the present invention, and as shown in fig. 5, the mobile communication terminal 500 includes:
a calculating module 501, configured to calculate a first receiving power of a target object and a second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, where the target object is an object that is used as a reference signal for monitoring a radio link and performs radio link monitoring;
a determining module 502, configured to determine a quality state of a wireless link corresponding to the target object according to a relationship between the first received power and the second received power.
Optionally, the target object includes a channel state information reference signal CSI-RS or a synchronization signal Block SS Block.
Optionally, the target resource is a resource defined in any one of the following manners:
the method comprises the steps that first N orthogonal frequency division multiplexing OFDM symbols in a time slot where a target object is located are obtained, wherein N is a positive integer;
all OFDM symbols of a time slot in which the target object is located;
and determining a part of OFDM symbols of the time slot where the target object is located according to a preset rule.
Optionally, the value of N is between 1 and M, where M is the number of OFDM symbols of CORESET notified by the network side device through the RRC signaling.
Optionally, the preset rule includes:
if the target object is a channel state information reference signal (CSI-RS), the partial OFDM symbols are OFDM symbols where the CSI-RS is located, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols where the CSI-RS is located in a time slot where the CSI-RS is located;
and if the target object is a synchronous signal Block SS Block, the part of OFDM symbols is all or part of OFDM symbols for transmitting the SS Block, or the part of OFDM symbols is all or part of OFDM symbols except the OFDM symbols for transmitting the SS Block in the time slot in which the SS Block is located.
Optionally, when the partial OFDM symbol is an OFDM symbol for transmitting all or part of the SS Block, the partial OFDM symbol includes at least one of an OFDM symbol for transmitting a secondary synchronization signal SSs, an OFDM symbol for transmitting a primary synchronization signal PSS, and an OFDM symbol for transmitting a physical broadcast channel.
Optionally, when the target resource is at least two OFDM symbols, the second received power is a total received power or an average received power on the target resource.
Optionally, the determining module 502 includes:
a calculating unit, configured to calculate a ratio of the first received power to the second received power;
a determining unit, configured to determine, when the ratio is greater than a first preset value corresponding to a threshold Q _ in of a preset wireless link quality, that an assumed block error rate of a physical downlink control channel of a wireless link corresponding to the target object is lower than the threshold Q _ in; and when the ratio is smaller than a second preset value corresponding to a threshold value Q _ out of the preset wireless link quality, determining that the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the target object is higher than the threshold value Q _ out.
The mobile communication terminal provided in the embodiment of the present invention can implement each process implemented by the mobile communication terminal in the method embodiments of fig. 1 to fig. 3, and is not described herein again to avoid repetition. In the embodiment of the invention, the target resource in the time slot of the target object which is used as the reference signal for monitoring the wireless link is adopted as the received signal/interference signal strength measurement resource by protocol convention, so that the condition that the additional signaling indicates the received signal strength/interference signal strength measurement resource can be avoided, and the system overhead is reduced.
Fig. 6 is a schematic diagram of a hardware structure of a mobile communication terminal for implementing various embodiments of the present invention.
The mobile communication terminal 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the mobile communication terminal configuration shown in fig. 6 does not constitute a limitation of the mobile communication terminal, and that the mobile communication terminal may include more or less components than those shown, or combine some components, or a different arrangement of components. In the embodiment of the present invention, the mobile communication terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 610 is configured to calculate a first receiving power of a target object and a second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, where the target object is an object that is used as a radio link monitoring reference signal to perform radio link monitoring; and determining the quality state of the wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power.
Optionally, the target object includes a channel state information reference signal CSI-RS or a synchronization signal Block SS Block.
Optionally, the target resource is a resource defined in any one of the following manners:
the method comprises the steps that first N orthogonal frequency division multiplexing OFDM symbols in a time slot where a target object is located are obtained, wherein N is a positive integer;
all OFDM symbols of a time slot in which the target object is located;
and determining a part of OFDM symbols of the time slot where the target object is located according to a preset rule.
Optionally, the value of N is between 1 and M, where M is the number of OFDM symbols of CORESET notified by the network side device through the RRC signaling.
Optionally, the preset rule includes:
if the target object is a channel state information reference signal (CSI-RS), the partial OFDM symbols are OFDM symbols where the CSI-RS is located, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols where the CSI-RS is located in a time slot where the CSI-RS is located;
and if the target object is a synchronous signal Block SS Block, the part of OFDM symbols is all or part of OFDM symbols for transmitting the SS Block, or the part of OFDM symbols is all or part of OFDM symbols except the OFDM symbols for transmitting the SS Block in the time slot in which the SS Block is located.
Optionally, when the partial OFDM symbol is an OFDM symbol for transmitting all or part of the SS Block, the partial OFDM symbol includes at least one of an OFDM symbol for transmitting a secondary synchronization signal SSs, an OFDM symbol for transmitting a primary synchronization signal PSS, and an OFDM symbol for transmitting a physical broadcast channel.
Optionally, when the target resource is at least two OFDM symbols, the second received power is a total received power or an average received power on the target resource.
Optionally, the processor 610 is further configured to:
calculating a ratio of the first received power to a second received power;
when the ratio is greater than a first preset value corresponding to a threshold value Q _ in of the quality of a preset wireless link, determining that the assumed block error rate of a physical downlink control channel of the wireless link corresponding to the target object is lower than the threshold value Q _ in;
and when the ratio is smaller than a second preset value corresponding to a threshold value Q _ out of the preset wireless link quality, determining that the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the target object is higher than the threshold value Q _ out.
In this way, in the embodiment of the present invention, the target resource in the time slot in which the target object for performing the radio link monitoring as the radio link monitoring reference signal is located is adopted as the received signal/interference signal strength measurement resource by the protocol convention, so that the received signal strength/interference signal strength measurement resource indicated by the extra signaling can be avoided, and therefore, the system overhead is reduced.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.
The mobile communication terminal provides the user with wireless broadband internet access through the network module 602, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 may also provide audio output related to a specific function performed by the mobile communication terminal 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.
The mobile communication terminal 600 further includes at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or backlight when the mobile communication terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile communication terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile communication terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although the touch panel 6071 and the display panel 6061 are two independent components to realize the input and output functions of the mobile communication terminal in fig. 6, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to realize the input and output functions of the mobile communication terminal, and is not limited herein.
The interface unit 608 is an interface through which an external device is connected to the mobile communication terminal 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile communication terminal 600 or may be used to transmit data between the mobile communication terminal 600 and the external device.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 610 is a control center of the mobile communication terminal, connects various parts of the entire mobile communication terminal using various interfaces and lines, and performs various functions of the mobile communication terminal and processes data by operating or executing software programs and/or modules stored in the memory 609 and calling data stored in the memory 609, thereby integrally monitoring the mobile communication terminal. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The mobile communication terminal 600 may further include a power supply 611 (such as a battery) for supplying power to various components, and preferably, the power supply 611 may be logically connected to the processor 610 through a power management system, so that functions of managing charging, discharging, and power consumption are implemented through the power management system.
In addition, the mobile communication terminal 600 includes some functional modules that are not shown, and thus, will not be described in detail herein.
Preferably, an embodiment of the present invention further provides a mobile communication terminal, including a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program, when executed by the processor 610, implements each process of the foregoing radio link monitoring method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing wireless link monitoring method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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 invention.
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.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. A wireless link monitoring method is applied to a mobile communication terminal, and is characterized by comprising the following steps:
calculating first receiving power of a target object and second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, wherein the target object is used as a wireless link monitoring reference signal to perform wireless link monitoring;
determining the quality state of a wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power;
wherein the target resource is a resource defined in any one of the following manners:
the method comprises the steps that first N orthogonal frequency division multiplexing OFDM symbols in a time slot where a target object is located are obtained, wherein N is a positive integer;
all OFDM symbols of a time slot in which the target object is located;
and determining a part of OFDM symbols of the time slot where the target object is located according to a preset rule.
2. The method of claim 1, wherein the target object comprises a channel state information reference signal (CSI-RS) or a synchronization signal Block (SS Block).
3. The method according to claim 2, wherein the value of N is between 1 and M, where M is the number of OFDM symbols of CORESET notified by the network side device through radio resource control protocol RRC signaling.
4. The method of claim 2, wherein the preset rules comprise:
if the target object is a channel state information reference signal (CSI-RS), the partial OFDM symbols are OFDM symbols where the CSI-RS is located, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols where the CSI-RS is located in a time slot where the CSI-RS is located;
and if the target object is a synchronous signal Block SS Block, the part of OFDM symbols is all or part of OFDM symbols for transmitting the SS Block, or the part of OFDM symbols is all or part of OFDM symbols except the OFDM symbols for transmitting the SS Block in the time slot in which the SS Block is located.
5. The method of claim 4, wherein the partial OFDM symbol comprises at least one of an OFDM symbol for transmitting a Secondary Synchronization Signal (SSS), an OFDM symbol for transmitting a Primary Synchronization Signal (PSS), and an OFDM symbol for transmitting a physical broadcast channel when the partial OFDM symbol is an OFDM symbol for transmitting all or part of the SS Block.
6. The method of claim 2, wherein the second received power is a total received power or an average received power over the target resource when the target resource is at least two OFDM symbols.
7. The method of claim 1, wherein determining the quality status of the wireless link corresponding to the target object according to the relationship between the first received power and the second received power comprises:
calculating a ratio of the first received power to a second received power;
when the ratio is greater than a first preset value corresponding to a threshold value Q _ in of the quality of a preset wireless link, determining that the assumed block error rate of a physical downlink control channel of the wireless link corresponding to the target object is lower than the threshold value Q _ in;
and when the ratio is smaller than a second preset value corresponding to a threshold value Q _ out of the preset wireless link quality, determining that the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the target object is higher than the threshold value Q _ out.
8. A mobile communication terminal, comprising:
the calculation module is used for calculating a first receiving power of a target object and a second receiving power corresponding to a target resource agreed in advance by a protocol in a time slot where the target object is located, wherein the target object is used as a wireless link monitoring reference signal to perform wireless link monitoring;
the determining module is used for determining the quality state of a wireless link corresponding to the target object according to the relation between the first receiving power and the second receiving power;
wherein the target resource is a resource defined in any one of the following manners:
the method comprises the steps that first N orthogonal frequency division multiplexing OFDM symbols in a time slot where a target object is located are obtained, wherein N is a positive integer;
all OFDM symbols of a time slot in which the target object is located;
and determining a part of OFDM symbols of the time slot where the target object is located according to a preset rule.
9. The mobile communication terminal of claim 8, wherein the target object comprises a channel state information reference signal (CSI-RS) or a synchronization signal Block (SS Block).
10. The mobile communication terminal according to claim 9, wherein the value of N is between 1 and M, where M is the number of OFDM symbols of CORESET notified by the network side device through RRC signaling.
11. The mobile communication terminal according to claim 8, wherein the preset rule comprises:
if the target object is a channel state information reference signal (CSI-RS), the partial OFDM symbols are OFDM symbols where the CSI-RS is located, or the partial OFDM symbols are all or partial OFDM symbols except the OFDM symbols where the CSI-RS is located in a time slot where the CSI-RS is located;
and if the target object is a synchronous signal Block SS Block, the part of OFDM symbols is all or part of OFDM symbols for transmitting the SS Block, or the part of OFDM symbols is all or part of OFDM symbols except the OFDM symbols for transmitting the SS Block in the time slot in which the SS Block is located.
12. The mobile communication terminal of claim 11, wherein when the partial OFDM symbol is an OFDM symbol for transmitting all or part of the SS Block, the partial OFDM symbol comprises at least one of an OFDM symbol for transmitting a secondary synchronization signal SSs, an OFDM symbol for transmitting a primary synchronization signal PSS, and an OFDM symbol for transmitting a physical broadcast channel.
13. The mobile communication terminal of claim 9, wherein the second received power is a total received power or an average received power on the target resource when the target resource is at least two OFDM symbols.
14. The mobile communication terminal of claim 8, wherein the determining module comprises:
a calculating unit, configured to calculate a ratio of the first received power to the second received power;
a determining unit, configured to determine, when the ratio is greater than a first preset value corresponding to a threshold Q _ in of a preset wireless link quality, that an assumed block error rate of a physical downlink control channel of a wireless link corresponding to the target object is lower than the threshold Q _ in; and when the ratio is smaller than a second preset value corresponding to a threshold value Q _ out of the preset wireless link quality, determining that the assumed block error rate of the physical downlink control channel of the wireless link corresponding to the target object is higher than the threshold value Q _ out.
15. A mobile communication terminal, characterized in that it comprises a processor, a memory and a computer program stored on said memory and executable on said processor, said computer program, when executed by said processor, implementing the steps of the radio link monitoring method according to any one of claims 1 to 7.
16. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the radio link monitoring method according to any one of claims 1 to 7.
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| CN101090578B (en) * | 2001-05-14 | 2015-07-15 | 美商内数位科技公司 | Channel quality measurements for downlink resource allocation |
| US20060223446A1 (en) * | 2005-03-29 | 2006-10-05 | Francis Dominique | Methods of detecting mobile stations not following power control commands |
| US8023955B2 (en) * | 2005-08-22 | 2011-09-20 | Sony Corporation | Uplink resource allocation to control intercell interference in a wireless communication system |
| CN101222280B (en) * | 2007-11-30 | 2012-02-29 | 深圳国人通信有限公司 | Single time slot power detecting method and system |
| CN103874119B (en) * | 2012-12-14 | 2017-03-15 | 展讯通信（上海）有限公司 | A kind of method and apparatus of monitoring LTE system downlink channel quality |
| CN106571879A (en) * | 2015-10-12 | 2017-04-19 | 中兴通讯股份有限公司 | Power detection method and device |
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