WO2021018068A1

WO2021018068A1 - Radio link monitoring method and communication device

Info

Publication number: WO2021018068A1
Application number: PCT/CN2020/104690
Authority: WO
Inventors: 张锦芳; 向铮铮
Original assignee: 华为技术有限公司
Priority date: 2019-07-30
Filing date: 2020-07-25
Publication date: 2021-02-04
Also published as: CN112312456A; CN112312456B

Abstract

The present application provides a radio link monitoring method and a communication apparatus, can be applied to the Internet of Vehicles for V2X communication, LTE-V communication, V2V communication or the like, or can be applied to fields such as intelligent driving and intelligent connected vehicles, and can solve the problem of failing in radio link monitoring for a radio link such as a side link between two or more terminal devices caused by the absence of a suitable reference signal. The method comprises: a first terminal device sends data or indication information to a second terminal device; and the first terminal device determines, according to whether the second terminal device sends feedback information for the data or indication information, whether to report radio link failure (RLF) information. By using embodiments of the present application, a monitoring operation for a radio link such as a side link between two or more terminal devices can be implemented, thereby expanding the application range of the radio link monitoring technology and improving the practicability of the radio link monitoring technology.

Description

Wireless link monitoring method and communication equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910706231.7, and the application name is "a wireless link monitoring method and communication equipment" on July 30, 2019, the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communication technology, and in particular to a wireless link monitoring method and communication equipment.

Background technique

With the continuous development of science and technology, new Internet services such as unmanned driving, autonomous driving and virtual reality are constantly emerging, which also makes the requirements for wireless communication technology become higher and higher. In the wireless communication system, the communication quality of the wireless link directly determines the data transmission capability. Therefore, how to reasonably realize the monitoring of the communication quality of the wireless link has become a major research hotspot at present.

In the prior art, in order to save communication resources, people have defined a new wireless link for communication between two terminal devices, namely a sidelink (SL). Two or more terminal devices can communicate directly through the side link without relying on the forwarding operation of the base station. In the scenario where the base station and the terminal device perform data transmission through the uplink or the downlink, the base station may periodically send to the terminal device such as synchronization signal block (synchronization signal block, SSB) or channel state information reference signal (channel state information reference signal) CSI-RS) are used for radio link monitoring (radio link monitoring, RLM) reference signals. The terminal equipment determines the uplink or downlink communication quality by measuring the signal quality of these reference signals. However, in a scenario where a terminal device (for easy understanding, the sending device is used instead of description) and another terminal device (for easy understanding, the receiving device is used instead of description) to transmit data through the side link, on the one hand, sending The device cannot send a sync signal block. On the other hand, since the channel state information reference signal will be sent with the data, if the receiving device fails to decode the control channel, the receiving device cannot receive the data, and therefore cannot measure the signal quality of the channel state information reference signal sent with the data . Therefore, in the scenario of data transmission through the side link, the terminal device cannot implement side link wireless link monitoring based on reference signals such as synchronization signal blocks or channel state information reference signals. Therefore, for the side link, how to reasonably realize the wireless link monitoring is a technical problem to be solved urgently.

Summary of the invention

This application provides a wireless link monitoring method and communication equipment, which can be applied to the Internet of Vehicles, such as vehicle to everything (V2X) communication, and workshop communication long term evolution-vehicle (LTE-V) , Vehicle-to-vehicle (V2V) communication, etc., or can be used in fields such as intelligent driving and intelligent networked vehicles. According to the method provided in the embodiments of this application, the inability to be caused by the absence of a suitable reference signal can be solved. The problem of wireless link monitoring for wireless links such as side links between two or more terminal devices expands the scope of application of wireless link monitoring technology and improves the practicability of wireless link monitoring technology.

In the first aspect, an embodiment of the application provides a wireless link monitoring method. The first terminal device first sends data to the second terminal device. Then, the first terminal device determines whether to report the radio link failure RLF information according to the second terminal device not sending feedback information for the data.

In the method provided by the embodiment of the present application, the first terminal device can judge the communication quality of the wireless link between the two terminal devices based on the non-feedback of the data sent by the second terminal device, which solves two or more problems. There is no problem that wireless link monitoring cannot be achieved due to reference signals in wireless links such as side links between terminal devices, which expands the scope of application of wireless link monitoring technology and improves the practicality of wireless link monitoring technology Sex.

With reference to the first aspect, in a feasible implementation manner, the above data is side row data, and the above feedback information is response ACK information or negative response NACK information.

With reference to the first aspect, in a feasible implementation manner, the first terminal device may update the value of the no feedback counter.

With reference to the first aspect, in a feasible implementation manner, the first terminal device may determine the number of consecutive times that the second terminal device has not sent feedback information to the first terminal device according to the value of the no feedback counter.

With reference to the first aspect, in a feasible implementation manner, after the first terminal device updates the feedback counter, the first terminal device may also reset the no feedback counter.

With reference to the first aspect, in a feasible implementation manner, if the first terminal device determines that the number of times that the second terminal device has not sent feedback information to the first terminal device continuously is equal to the preset threshold, then the RLF information is reported.

With reference to the first aspect, in a feasible implementation manner, if the second terminal device does not send feedback information for the foregoing data or instruction information, the foregoing first terminal device updates the no-feedback counter. If the above-mentioned first terminal device determines that the value of the updated no-feedback counter is equal to the out-of-synchronization OOS threshold, it reports OOS information and updates the OOS reporting counter. The above-mentioned first terminal device determines whether to report the radio link failure RLF information according to the updated OOS report counter value.

With reference to the first aspect, in a feasible implementation manner, if the first terminal device determines that the updated value of the OOS reporting counter is equal to the first RLF reporting threshold, the RLF information is reported. Whether the target wireless link fails is determined by whether the number of times the first terminal device continuously and uninterruptedly sending OOS information to the higher layer reaches the first RLF reporting threshold. The method is simple and easy to implement, and can improve the efficiency of wireless link monitoring.

With reference to the first aspect, in a feasible implementation manner, when the first terminal device determines that the value of the updated OOS reporting counter is equal to the RLF decision threshold, the first terminal device can obtain the IS information reported by the first terminal device within the target time period. The total number of times. Here, the target time period is determined by the first time when the OOS reporting counter was last reset and the second time when the value of the updated OOS reporting counter is equal to the RLF decision threshold. If the first terminal device determines that the total number of times is equal to the second RLF reporting threshold, it reports the RLF information.

With reference to the first aspect, in a feasible implementation manner, when the first terminal device determines that the value of the updated OOS reporting counter is equal to the RLF decision threshold, the first terminal device can obtain the IS information reported by the first terminal device within the target time period. The total number of times. Here, the target time period is determined by the first time when the OOS reporting counter was last reset and the second time when the value of the updated OOS reporting counter is equal to the RLF decision threshold. The first terminal device obtains the ratio of the total number of times to the value of the updated OOS report counter. If the first terminal device determines that the ratio is less than the third RLF reporting threshold, it reports the RLF information. Combining the number of reports of OOS information and the number of reports of IS information in the target period to determine the validity of the target wireless link can avoid misjudgments caused by short-term communication quality fluctuations of the target wireless link, and improve the accuracy of wireless link monitoring .

With reference to the first aspect, in a feasible implementation manner, if the second terminal device sends feedback information for the data or instruction information, the first terminal device updates a feedback counter. If the first terminal device determines that the updated value of the feedback counter is equal to the synchronous IS reporting threshold, it reports IS information and updates the IS reporting counter. If the first terminal device determines that the value of the updated IS reporting counter is equal to the OOS reporting counter clearing threshold, the OOS reporting counter is reset and the RLF information is not reported.

With reference to the first aspect, in a feasible implementation manner, the above-mentioned wireless link monitoring method is applicable to the side link SL.

In the second aspect, an embodiment of the present application provides a communication device. The communication device is the aforementioned first terminal device. The communication device includes a unit for executing the wireless link monitoring method provided by any one of the possible implementations of the first aspect, so it can also achieve the beneficial effects of the wireless link monitoring method provided by the first aspect (Or advantages).

In a third aspect, an embodiment of the present application provides a communication device, and the communication device is the aforementioned first terminal device. The communication device includes a memory, a processor, and a transceiver. Wherein, the processor is configured to call the code stored in the memory to execute the wireless link monitoring method provided in any feasible implementation manner in the first aspect.

In a fourth aspect, an embodiment of the present application provides a communication device, and the communication device is the aforementioned first terminal device. The communication device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the above code instructions to implement the wireless link monitoring method provided in any feasible implementation manner of the above first aspect, and can also achieve the beneficial effects of the wireless link monitoring method provided by the above first aspect (Or advantages).

In the fifth aspect, an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when the instructions are run on a computer, any one of the feasible implementations in the first aspect is realized The wireless link monitoring method provided by the method can also realize the beneficial effects (or advantages) of the wireless link monitoring method provided in the first aspect.

In the sixth aspect, the embodiments of the present application provide a computer program product containing instructions. When the computer program product runs on a computer, the computer can execute the wireless link monitoring method provided in the first aspect, and the first aspect can also be implemented. The beneficial effects of the wireless link monitoring method provided by the aspect.

In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned first terminal device and the above-mentioned second terminal device.

Using the method provided by the embodiments of the present application can solve the problem that wireless link monitoring cannot be achieved due to the absence of reference signals in wireless links such as side links between two or more terminal devices, which extends the infinite The scope of application of link monitoring technology improves the practicability of wireless link monitoring technology.

Description of the drawings

FIG. 1 is a schematic diagram of a wireless link scenario provided by an embodiment of the present application;

2 is a schematic flow chart of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of another process of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of another flow of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 5 is an example diagram of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 6 is a diagram of another example of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 7 is another example diagram of a wireless link monitoring method provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 9 is another schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is another schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

The embodiment of the present application provides a wireless link monitoring method, which is suitable for various wireless communication systems capable of data transmission through side links. For example: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), general mobile communication system (Universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future 5th generation (5G) system or new radio (NR), etc.

The first terminal device or the second terminal device involved in the embodiments of the present application may be user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, Terminals, wireless communication equipment, user agents, or user devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital processing ( personal digital assistant, PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, roadside units, wearable devices, terminal devices in the future 5G network or future evolutionary public The terminal equipment in a land mobile communication network (public land mobile network, PLMN), etc., is not limited in the embodiment of the present application. To facilitate understanding, in the embodiments of the present application, the first terminal device or the second terminal device will be collectively described.

Please refer to FIG. 1, which is a schematic diagram of a wireless link scenario provided by an embodiment of the present application. This wireless link can be called a side link. The so-called side link is a new wireless link defined for direct communication between two terminal devices in a wireless network. Through the side link, information or data can be directly transmitted between two terminal devices without forwarding through relay devices such as base stations, as shown in Figure 1. Here, it should also be noted that in the side links involved in the embodiments of this application, there are also defined physical layer side link feedback channels (physical sidelink feedback channel, PSFCH) and physical layer side link shared channels (physical sidelink shared channel). channel, PSSCH). After the first terminal device sends data to the second terminal device, the second terminal device can feed back acknowledgement (ACK) information or a negative response to the first terminal device through the aforementioned physical layer sideline feedback channel or physical layer sideline shared channel (negative acknowledgement, NACK) information. For example, suppose that the first terminal device sends a data packet to the second terminal device through the side link. The second terminal device will decode the control channel. If the second terminal device cannot decode the control channel correctly, the second terminal device cannot determine whether the first terminal device sends a data packet to it, and the second terminal device No ACK information or NACK information will be fed back to the first terminal device. If the second terminal device correctly decodes the control channel, the data packet sent by the first terminal device can be received through the control channel. Then, the second terminal device can continue to decode the data packet. If the second terminal device decodes successfully, it can feed back ACK information to the first terminal device. If the second terminal device fails to decode, it can report to the The first terminal device feeds back NACK information. In addition, the second terminal device may also feed back channel state information (CSI) measurement reports, interference information, etc. to the first terminal device through the physical layer sideline feedback channel or the physical layer sideline shared channel. Make a limit.

In the following, taking the second terminal device feeding back the CSI measurement report to the first terminal device as an example, after the first terminal device sends the CSI measurement report indication information to the second terminal device, if the second terminal device successfully decodes the control channel and receives it With the above CSI measurement report indication information, the second terminal device may feed back the CSI measurement report to the first terminal device. If the second terminal device fails to decode the control channel, it will not feed back the CSI measurement report to the first terminal device.

Further, in the scenario shown in FIG. 1, on the one hand, the first terminal device cannot send a synchronization signal block (synchronization signal block, SSB) to the second terminal device. On the other hand, since the channel state information reference signal (CSI-RS) is sent along with the data, if the first terminal device sends the channel state information reference signal to the second terminal device along with the data, but the second terminal device If the device fails to decode the control channel, the second terminal device cannot receive the data, and thus cannot measure the signal quality of the channel state information reference signal sent with the data. Therefore, in the scenario shown in FIG. 1, the first terminal device cannot implement side-link wireless link monitoring based on reference signals such as synchronization signal blocks or channel state information reference signals.

The technical problem to be solved by the wireless link monitoring method provided in the embodiments of the application is: how to implement wireless link monitoring of wireless links such as side links, so as to expand the scope of application of the wireless link monitoring technology and improve the wireless link Practicality of monitoring technology.

Example one

Please refer to FIG. 2, which is a schematic flowchart of a first wireless link monitoring method provided by an embodiment of the present application. As shown in Figure 2, the above wireless link monitoring method includes the following steps:

S10: The first terminal device sends data or instruction information to the second terminal device.

In some feasible implementation manners, when the first terminal device needs to perform wireless link monitoring on a certain wireless link between it and the second terminal device (for ease of understanding and distinction, the target wireless link is used to replace the description below) In the case of radio link monitoring (RLM), the first terminal device may send data or instruction information to the second terminal device through the target wireless link. Optionally, the foregoing target wireless link is a side link used for data transmission between the first terminal device and the second terminal device, and the foregoing side link defines a physical layer side feedback channel and a physical layer side link. Shared channel. Here, it can be understood that in the process of monitoring the target wireless link, the first terminal device will send multiple pieces of data or instruction information to the second terminal device. In the embodiment of this application, the first terminal device sends a certain piece of data (for the convenience of understanding and distinction, the description is replaced by target data below) or a certain piece of instruction information (for the convenience of understanding and distinction, the following will The target indication information replaces the description), and the process of judging whether the target wireless link fails based on whether the second terminal device has feedback for the target data or target indication information is an example, and the whole monitoring process of the target wireless link is briefly described .

Optionally, in specific implementation, the aforementioned target data may be side row data. The above-mentioned target indication information may be CSI measurement report indication information, reference signal received power (RSRP) feedback indication information, reference signal received quality (RSRQ) feedback indication information, and received signal strength indication (received) signal strength indicator, RSSI) Any one of feedback indication information, which is not limited here. Of course, in the embodiments of the present application, the description will be uniformly based on the target data or target indication information, which is not specifically limited.

Optionally, after the first terminal device determines that it needs to perform wireless link monitoring on the above-mentioned target wireless link, in a feasible implementation manner, if the first terminal device detects that the preset transmission period has arrived, it may Send the target data or target indication information to the second terminal device through the target wireless link. Or, in another feasible implementation manner, if before the preset sending period arrives, the first terminal device detects the feedback information of the target data or target indication information sent by the second terminal device last time. Immediately send the new target data or target indication information to the second terminal device again through the target wireless link. If when the preset sending period arrives, the first terminal device still does not detect the feedback information of the target data or target indication information sent by the second terminal device last time, it can immediately send to the second terminal device again through the target wireless link. The terminal device sends new target data or target indication information.

S20: The first terminal device determines whether to report the radio link failure RLF information according to whether the second terminal device sends feedback information for the data or the indication information.

In some feasible implementation manners, after the first terminal device sends the target data or target indication information to the second terminal device, the first terminal device may detect whether the second terminal device sends the target to it through the target wireless link. Feedback information corresponding to data or target indication information. Then, the first terminal device may determine whether it needs to report radio link failure (RLF) information according to the detection result.

It should be noted that, in a specific implementation, when the target data is sideline data, the feedback information is information for indicating whether the second terminal device receives the sideline data. For example, the feedback information may be acknowledgement (ACK) information used to indicate successful data reception or negative acknowledgement (NACK) information used to indicate failure of data reception. In another specific implementation, when the target data is side row data, the feedback information may also be a CSI measurement report, RSRP report, RSRQ report or RSSI used to indicate whether the second terminal device successfully receives the target data. report. It should be noted that in this scenario, a network device such as a base station or the first terminal device may send related configuration information to the second terminal device in advance to configure the second terminal device, or the second terminal device It has been configured at the factory so that the second terminal device will feed back the CSI measurement report, RSRP report, RSRQ report or RSSI to the first terminal device as long as it successfully receives the above target data during the entire wireless link monitoring process. report. In another feasible implementation manner, when the target indication information is CSI measurement report indication information, RSRP feedback indication information, RSRQ feedback indication information, or RSSI feedback indication information, the above feedback information may also be used to indicate the second terminal Whether the device successfully receives the CSI measurement report, RSRP report, RSRQ report, or RSSI report of the CSI measurement report indication information, RSRP feedback indication information, RSRQ feedback indication information, or RSSI feedback indication information.

In specific implementation, after the first terminal device sends the target data or target indication information to the second terminal device, it may be in a preset detection period (it can be understood that the detection period may be the aforementioned sending In the period), it is detected in real time whether the second terminal device has sent feedback information for the target data or target indication information through the target wireless link. If the first terminal device detects the feedback information within the detection period, it can be determined that the second terminal device has feedback. If the first terminal device does not detect the foregoing feedback information within the detection period, it may be determined that the foregoing second terminal device has no feedback.

In the following, the process of determining whether to report the RLF information by the first terminal device will be specifically described in combination with two different scenarios of the second terminal device with feedback and without feedback.

Scenario 1: No feedback from the second terminal device

In the first optional implementation manner, please refer to Fig. 3 together. Fig. 3 is a schematic diagram of another process of a wireless link monitoring method provided by an embodiment of the present application. It can be seen from Figure 3 that in a scenario where the second terminal device has no feedback, the first terminal device may perform the following steps:

S201: If the second terminal device does not send feedback information for data or indication information, the first terminal device updates a no feedback counter.

In some feasible implementation manners, if the second terminal device does not send feedback information for the target data or target indication information (that is, the second terminal device has no feedback), the first terminal device can update its internal pre-configured data. The value of the feedback counter. It can be understood here that the value of the aforementioned no feedback counter is mainly used to indicate the number of times that the aforementioned second terminal device has not sent feedback information to the first terminal device continuously. In practical applications, the process of updating the non-feedback counter by the first terminal device is the process of accumulating the value of the non-feedback counter. For example, assuming that the initial value of the no feedback counter is 0, after the first terminal device determines that the second terminal device has no feedback, the first terminal device may update the value of the no feedback counter to 1, if the first terminal device Sending the target data or target indication information again and determining again that the second terminal device has no feedback, the first terminal device may update the value of the no feedback counter from 1 to 2, and so on. Of course, it can be understood that the value accumulated by the first terminal device each time the no-feedback counter is updated can be not only 1, but also other positive integers other than 0, which is not limited here. Further, if the first terminal device determines that the second terminal device has no feedback, and the value of the feedback counter preconfigured in it is not zero, the first terminal device may also clear the value of the feedback counter to zero, and Make it start counting again. Here, the value of the feedback counter is mainly used to indicate the number of times that the second terminal device continuously sends feedback information.

Here, it should be noted that the value of the above no feedback counter indicates the number of times the second terminal device has not sent feedback information continuously, that is, as long as the second terminal device has feedback, the no feedback counter will be reset , And restart counting. In the same way, the value of the above feedback counter indicates the number of times that the second terminal device continuously sends feedback information, that is, as long as the second terminal device has no feedback, the feedback counter will be reset and restart counting . For example, assuming that the initial values of the counter without feedback and the counter with feedback are both 0, at adjacent moments T1 and T2, the first terminal device has sent target data twice, and has not received feedback information, then The value of the feedback counter is 2. At time T3, which is adjacent to time T2, the first terminal device sends the third target data to the second terminal device and detects the feedback information, then the first terminal device needs to clear the value of the no feedback counter, and set The value of the feedback counter is updated to 1. At time T4, which is adjacent to time T3, when the first terminal device sends the fourth target data to the second terminal device and detects feedback information, the value of the no feedback counter is still 0, and the value of the feedback counter is updated to 2. At time T5, which is adjacent to time T4, if the first terminal device sends the fifth target data to the second terminal device and no feedback information is detected, the value of the feedback counter is cleared, and the value of the non-feedback counter is changed from 0 Update to 1, and so on. In other words, the above non-feedback counter counts the number of times that the first terminal device has not continuously received feedback information from the second terminal device. In the process of accumulating the value of the non-feedback counter, there will be no second There is feedback from the terminal equipment. The above feedback counter counts the number of times that the first terminal device continuously receives feedback information from the second terminal device. During the continuous accumulation of the value of the feedback counter, there will be no case where the second terminal device has no feedback. .

S202: If the first terminal device determines that the value of the updated no-feedback counter is equal to the out of synchronization (OOS) threshold, then report OOS information and update the OOS report counter.

In some feasible implementation manners, after updating the value of the aforementioned no-feedback counter, the first terminal device may also determine whether the value of the updated no-feedback counter is equal to the preset OOS threshold. If the first terminal device determines that the value of the updated no-feedback counter is equal to the OOS threshold, the first terminal device may report to a media access control (MAC) layer or a radio resource control (radio resource control, RRC) layer. Wait for the high-level to report OOS information, that is, to tell the high-level that the target wireless link is out of synchronization. At the same time, the first terminal device may also update the value of the pre-configured OOS reporting counter. Here, the value of the OOS reporting counter is used to indicate the number of times the first terminal device continuously reported the OOS information to the higher layer from the time when the OOS reporting counter was reset last time until the current moment.

It should be noted that from the perspective of the protocol stack, the processes of the first terminal device updating the no-feedback counter, determining whether to report OOS information, and updating the OOS reporting counter are all implemented at its physical layer. When it determines that it needs to report OOS information, the first terminal device reports OOS information from its physical layer to a higher layer such as the MAC layer or the RRC layer. In the same way, the subsequent processes involving feedback counters, IS reporting counter updates, and determination of reporting IS information are also implemented at the physical layer, and the IS information reporting process is also reported from the physical layer to higher layers such as the MAC layer or the RRC layer. In other words, the operations such as OOS information reporting and IS information reporting mentioned in the embodiments of this application are all the reporting operations of the first terminal device from the physical layer to the MAC layer or the RRC layer. No longer.

In practical applications, the process of updating the OOS counter by the first terminal device may be a process of accumulating the value of the OOS counter. For example, assuming that the initial value of the OOS counter is 0, after the first terminal device reports OOS information to a higher level, the first terminal device can update the value of the OOS report counter to 1. If the first terminal device Once the OOS information is reported to the higher layer again, the first terminal device may update the value of the OOS reporting counter from 1 to 2, and so on. Of course, it can be understood that the accumulated value of each update of the OOS report counter by the first terminal device can be not only 1, but also other positive integers other than 0, which is not limited here.

Further, after the first terminal device reports the above-mentioned OOS information to the higher layer, the first terminal device may also reset the value of the pre-configured synchronization (in synchronization, IS) reporting counter and make it restart counting. Here, the value of the IS reporting counter is mainly used to indicate the number of times that the first terminal device continuously reports IS information to a higher layer. It can be understood that the so-called continuous reporting of IS information to the higher layers is the same as the scenario of the first terminal device continuously receiving feedback information from the second terminal device described above, that is, the value of the IS reporting counter is continuously accumulated. During the process, the first terminal device will not report OOS information. Once this happens, the value of the IS report counter will be cleared.

S203: The above-mentioned first terminal device determines whether to report the radio link failure RLF information according to the updated OOS report counter value.

In some feasible implementation manners, after the first terminal device updates the OOS report counter, it can determine whether it needs to report RLF information to the upper layer according to the value of the updated OOS report counter. In specific implementation, the embodiment of the present application counts the number of times that the first terminal device continuously and uninterruptedly reported OOS information to the higher layer for the OOS report counter (that is, during the continuous accumulation of the value of the OOS report counter, there is no first The situation where the terminal device reports IS information to the upper layer), or the OOS report counter counts the total number of times the first terminal device reports OOS information to the upper layer within a certain period of time (for ease of understanding and distinction, the target period is used to replace the description below) ( That is, in the target time period, there may be one or more times when the first terminal device reports IS information to the higher level) These two different scenarios provide two ways to determine whether to report RLF information, as described below. One and sure way two.

Determination method one:

In specific implementation, in the scenario where the above OOS reporting counter counts the first terminal device continuously and uninterrupted reporting OOS information to the higher level, the above first terminal device can determine the updated OOS after updating the OOS reporting counter. Whether the value of the report counter is equal to the preset first RLF report threshold. If the first terminal device determines that the value of the updated OOS report counter is equal to the aforementioned first RLF reporting threshold, the first terminal device can determine that the target radio link has failed, and can report the aforementioned RLF information to a higher layer. If the first terminal device determines that the value of the updated OOS reporting counter is not equal to the first RLF reporting threshold, it may send new target data or target indication information to the second terminal device, and repeat the foregoing monitoring operation. Here, by judging whether the number of times that the first terminal device continuously and uninterruptedly sending OOS information to the upper layer reaches the first RLF reporting threshold to determine whether the target wireless link fails, the method is simple, easy to implement, and can improve the efficiency of wireless link monitoring .

Determination method two:

In specific implementation, in a scenario where the above OOS reporting counter counts the total number of times the first terminal device reports OOS information to a higher level within the target period, the first terminal device can determine the above OOS reporting counter after updating the OOS reporting counter Whether the value of is equal to the preset RLF decision threshold. If the first terminal device determines that the value of the updated OOS reporting counter is equal to the preset RLF decision threshold, the first terminal device may obtain the total number of times it has reported the above IS information within the target time period. Here, the aforementioned target time period refers to the time period between the first time when the OOS reporting counter was last cleared to the second time when the value of the updated OOS reporting counter is equal to the RLF decision threshold. It can be understood that since the value of the IS report counter refers to the number of times that the first terminal device continuously and uninterruptedly reported IS information, in the process of accumulating the value of the IS report counter, if the first terminal device reports OOS information In the case of IS, the value of the IS reported counter will be cleared. Therefore, the first terminal device can first obtain the value of the IS reporting counter at the second time and the value before the IS reporting counter is cleared each time in the target time period, and then the IS reporting counter value at the second time and the value in the target time period The sum of the value before the IS report counter is cleared to zero each time is determined as the total number of times the first terminal device reports IS information within the target time period. Then, if the first terminal device determines that the above-mentioned total number of times is equal to the second RLF reporting threshold, it can determine that the target radio link fails, and report the RLF information to the higher layer. Alternatively, the first terminal device may first calculate the ratio between the total number of times and the value of the updated OOS report counter. If the first terminal device determines that the ratio is less than the preset third RLF reporting threshold, the first terminal device may determine that the target radio link fails and report the RLF information to the higher layer. If the first terminal device determines that the total number of times is not equal to the second RLF reporting threshold or the ratio is equal to or greater than the third RLF reporting threshold, the first terminal device may send new target data or target indication information to the second terminal device , And repeat the above monitoring operation. In addition, after the first terminal device determines that the target wireless link fails and reports the RLF information to the higher layer, the first terminal device can also clear the above feedback counter, non-feedback counter, OOS report counter, and IS report counter to zero, and repeat Repeat the above-mentioned wireless link monitoring operation.

Here, combining the number of reports of OOS information and the number of reports of IS information within the target time period to determine that the target wireless link is effective can avoid misjudgments caused by short-term communication quality fluctuations of the target wireless link, and improve the performance of wireless link monitoring. accuracy.

In the second optional implementation manner, after the first terminal device sends the aforementioned target data or target indication information to the second terminal device, if it is determined that the second terminal device does not send feedback information for the data or the indication information, the first The terminal device can update the no feedback counter. Then, the first terminal device can directly determine whether to report the RLF information according to the updated value of the no feedback counter.

Specifically, if the second terminal device does not send feedback information for the target data, that is, a discontinuous transmission (DTX) situation occurs, the first terminal device may update its internal pre-configured no feedback The value of the counter. For the specific update process, refer to the process of updating the no-feedback counter if the first terminal device determines that the second terminal device does not send feedback information for target data or target indication information described in step S201 above, which will not be repeated here. Then, if the first terminal device determines that the number of consecutive times that the second terminal device has not sent feedback information to the first terminal device indicated by the value of the updated no feedback counter is equal to the preset threshold, the first terminal device The device can report RLF information to higher layers. If the first terminal device determines that the number of times that the second terminal device has not continuously sent feedback information to the first terminal device indicated by the value of the updated no feedback counter is not equal to the preset threshold, it may send the message to the second terminal device Send new target data or target indication information, and repeat the above monitoring operation. Here, the above-mentioned preset threshold may be configured or pre-configured on the network side, which is not specifically limited here.

Scenario 2: Feedback from the second terminal device

Please also refer to FIG. 4, which is a schematic flowchart of another method for monitoring a wireless link according to an embodiment of the present application. It can be seen from Figure 4 that in a scenario where the second terminal device has feedback, the first terminal device may perform the following steps:

S211: If the second terminal device sends feedback information for data or indication information, the first terminal device updates a feedback counter.

In some feasible implementation manners, if the second terminal device sends feedback information for the foregoing data or indication information (that is, the second terminal device has feedback), the first terminal device may update the value of the feedback counter. Here, the value of the feedback counter is mainly used to indicate the number of times that the first terminal device continuously and uninterruptedly received feedback information from the second terminal device. That is, in the process of continuously accumulating the value of the feedback counter, there will be no situation that the first terminal device does not receive feedback information from the second terminal device. Once this happens, the value of the feedback counter will be reset. In practical applications, the process of updating the feedback counter by the first terminal device is the process of accumulating the value of the feedback counter. The specific process is similar to the process of updating the non-feedback counter by the first terminal device described above, and will not be omitted here. Repeat. In the same way, while the first terminal device updates the feedback counter, the first terminal device can also reset the aforementioned non-feedback counter and restart counting.

S212: If the first terminal device determines that the value of the updated feedback counter is equal to the synchronous IS threshold, it may report IS information and update the IS report counter.

In some feasible implementation manners, after updating the value of the feedback counter, the first terminal device may determine whether the updated value of the feedback counter is equal to the preset IS threshold. If the first terminal device determines that the value of the updated feedback counter is equal to the preset synchronization IS threshold, the first terminal device may report the IS information to the higher layer, that is, tell the higher layer target wireless link synchronization. At the same time, the first terminal device can also update the value of the IS report counter. In practical applications, the process of updating the IS counter by the first terminal device may be the process of accumulating the value of the IS counter described above. For example, assuming that the initial value of the IS counter is 0, after the first terminal device reports IS information to the higher layer once, the first terminal device can update the value of the IS report counter to 1. If the first terminal device Once IS information is reported to the higher layer, the first terminal device can update the value of the above IS report counter from 1 to 2, and so on. Of course, it can be understood that the accumulated value of each update of the IS report counter by the first terminal device can be not only 1, but also other positive integers other than 0, which is not limited here. Here, it should be noted that the value of the IS report counter indicates the number of times that the first terminal device continuously and uninterruptedly reported the above IS information to the higher layer. That is, in the process of continuously accumulating the value of the IS report counter, there will be no situation in which the first terminal device reports OOS information to the higher layer. Once the first terminal device reports the OOS information to the higher layer, the value of the IS report counter will be cleared and the counting will restart.

S213: If the first terminal device determines that the value of the updated IS report counter is equal to the OOS report counter clearing threshold, reset the OOS report counter without reporting RLF information.

In some feasible implementation manners, after the first terminal device updates the aforementioned IS reporting counter, the first terminal device may determine whether the value of the updated IS reporting counter is equal to the OOS reporting counter clearing threshold. If the first terminal device determines that the value of the updated IS reporting counter is equal to the OOS reporting counter clearing threshold, the first terminal device can clear the value of the OOS reporting counter and the IS counter, and let the OOS reporting counter and IS reporting counter reset Start counting. Then, the first terminal device may send new target data or target indication information to the second terminal device, and repeat the monitoring operation. If the first terminal device determines that the value of the updated IS report counter is not equal to the OOS report counter clearing threshold, it may continue to send new target data or target indication information to the second terminal device, and repeat the above monitoring operation.

Optionally, during the entire wireless link monitoring process, the first terminal device may continuously send multiple target data to the second terminal device until the wireless link monitoring is completed. Alternatively, the first terminal device may also continuously send multiple target indication information to the second terminal device until the wireless link monitoring is completed. Alternatively, the first terminal device may continuously send multiple target data or target indication information to the second terminal device until the wireless link monitoring is completed. For example, the first terminal device may continuously send the target data to the second terminal device 5 times, and then continuously send the target indication information to the second terminal device 5 times, and repeat this process until the wireless link monitoring is completed.

Optionally, in specific implementation, the parameters such as the OOS threshold, IS threshold, first RLF threshold, second RLF threshold, and third RLF threshold as described above may be empirical values obtained through multiple wireless network monitoring tests. It may also be a value determined by the network device based on real-time services or network status, which is not limited here. In addition, the above OOS threshold, IS threshold, first RLF threshold, second RLF threshold, third RLF threshold and other parameters may be pre-configured in the first terminal device, or the network device may be the first terminal device in real time. Configured. The configuration information required by the second terminal device can be configured by the network device in real time, or it can be delivered to the first terminal device by the network device first, and then configured by the first terminal device, or it can be The second terminal device is configured when it leaves the factory, and there is no specific limitation here.

In addition, it should be noted that the wireless link monitoring method provided in the embodiments of this application can not only be used to monitor the side link between two terminal devices (such as the first terminal device and the second terminal device), but also It can be used to monitor the side link between three or more terminal devices, which is not limited here.

It should also be noted that in this embodiment of the application, the first terminal device is used as the sender of target data or target indication information, and the second terminal device is used as the receiver of target data or target indication information to monitor the wireless link. Methods are described. However, in practical applications, the second terminal device may also send target data or target indication information to the first terminal device, and determine whether to report the RLF based on whether the first terminal device has feedback on the target data or target indication information. information. In other words, the first terminal device can be either the sender or the receiver of the target data or target indication information. The second terminal device may be the sender or the receiver of the feedback information corresponding to the target data or target indication information, which is not specifically limited in the embodiment of the present application.

Hereinafter, the process of determining whether to report RLF information by the first terminal device described in the first optional implementation manner described in the foregoing first optional implementation manner will be exemplarily described below in conjunction with FIG. Here, FIG. 5 is an example diagram of a wireless link monitoring method provided by an embodiment of the present application. As shown in FIG. 5, here, it is assumed that the first RLF reporting threshold is 4, and the OOS reporting counter clearing threshold is 2. The first terminal device reports OOS information to the higher layer at time t1, time t2, and time t3. Therefore, at time t3, the value of the OOS report counter is 3. At time t4 and time t5, the first terminal device reported IS information to the higher layer. At this time, the value of the IS report counter is 2, which is equal to the set OOS report clearing threshold. At t5, the first terminal device can reset the OOS report counter and continue to send new target data or target indication information. From time t6 to time t9, the first terminal device continuously reported OOS information 4 times, and the value of the OOS reporting counter is 4, which is equal to the preset first RLF reporting threshold. Then, at time t9, the first terminal device can report to the higher layer Report the above RLF information.

Hereinafter, the process of determining whether to report RLF information by the first terminal device described in the above-mentioned first optional implementation manner based on determination manner two will be exemplarily described in conjunction with FIG. 6. Here, FIG. 6 is a diagram of another example of a wireless link monitoring method provided by an embodiment of the present application. As shown in FIG. 6, here, it is assumed that the RLF decision threshold is 4, the second RLF reporting threshold is 2, and the OOS reporting counter clearing threshold is 3. The first terminal device reports OOS information to the higher layer at time t1 and time t2. Therefore, at time t2, the value of the OOS report counter is 2. The first terminal device continuously reported IS information three times at time t3, time t4, and time t5. At this time, the value of the IS report counter is 3. The first terminal device may determine that the value of the IS report count is equal to the preset OOS report counter clearing threshold, and at t5, the first terminal device may reset the OOS report counter, clear the IS report counter and restart counting, and at the same time Continue to send new target data or target indication information. At time t6, the first terminal device reports OOS information, and the value of the OOS report counter is 1. At time t7 and time t8, the first terminal device continuously reported IS information twice. At this time, the value of the OOS reporting counter is still 1, and the value of the IS reporting counter is 2. From time t9 to time t11, the first terminal device has reported OOS information three times in succession. At this time, the indication of the OOS reporting counter is 4. At time t11, the value of the OOS reporting counter is equal to the RLF decision threshold, and the first terminal device can determine that the period from time t5 to time t11 is the target time period described above. The first terminal device can obtain the total number of IS information reported within the target time period. Since the IS report counter is not reset in the target time period, the total number of times the first terminal device reports IS information in the target time period is the value of the IS report counter at time t11, which is 2. The first terminal device determines that the above-mentioned total number of times is equal to the above-mentioned second RLF reporting threshold, and it can report RLF information to the higher layer at time t11.

In the following, with reference to FIG. 7, the process in which the first terminal device directly determines whether to report RLF information based on the updated value of the no feedback counter described in the second optional implementation manner will be exemplarily described. Here, FIG. 7 is a diagram of another example of a wireless link monitoring method provided by an embodiment of the present application. As shown in Figure 7, it is assumed that the preset threshold is 4 and the value of the no feedback counter is 0. The first terminal device determines that the second terminal device does not send feedback information for the target data at time t1, time t2, and time t3. Therefore, at time t3, the value of the no feedback counter is 3. At time t4, the first terminal device determines that the second terminal device has sent feedback information for the target data or target indication information, and the value of the no feedback counter is still 3. At t5, the first terminal device determines that the second terminal device does not send feedback information for the target data, and the value of the no feedback counter is accumulated from 3 to 4. At this time, the first terminal device may determine that the number of times that the second terminal device has not sent feedback information to the first terminal device continuously is equal to the preset threshold, and then may report the RLF information to the higher layer.

In the embodiment of the present application, the first terminal device can determine the communication quality of the wireless link between the two terminal devices based on whether the second terminal device has feedback on the data or indication information sent by it. There is no problem that wireless link monitoring cannot be realized due to reference signals in wireless links such as links, which expands the scope of application of wireless link monitoring technology and improves the practicability of wireless link monitoring technology.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be the first terminal device described above, and the communication device may be used to perform the function of the first terminal device in the first embodiment. For ease of description, only the main components of the communication device are shown in FIG. 8. It can be seen from FIG. 8 that the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, control the communication device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by a user using the communication device and output data to the user. It should be noted that in some scenarios, the communication device may not include an input and output device.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 8. In an actual communication device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

As an optional implementation, the processor may include a baseband processor and/or a central processing unit. The baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control the entire terminal device. , Execute the software program, and process the data of the software program. The processor in FIG. 8 can integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors and are interconnected by technologies such as a bus. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the communication device, and the processor with the processing function may be regarded as the processing unit of the communication device. As shown in FIG. 8, the communication device includes a transceiver unit 810 and a processing unit 820. Here, the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 810 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 810 can be regarded as the sending unit, that is, the transceiver unit 810 includes a receiving unit and a sending unit. Here, the receiving unit may also be called a receiver, a receiver, or a receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 810 is used to perform the sending and receiving operations of target data or target indication information in the first embodiment, and the processing unit 820 is used to perform the sending and receiving operations in addition to the target data or target indication information in the first embodiment. Other operations.

For example, in an implementation manner, the transceiver unit 810 is configured to execute the process of sending target data or target indication information in step S10 in FIG. 2 above. Or, when the second terminal device has feedback, the transceiving unit 810 is further configured to perform the process of receiving target data or feedback information corresponding to the target indication information from the second terminal device described in step S20 in FIG. 2. The processing unit 820 is configured to perform the process of determining whether to report RLF information according to whether the second terminal device sends feedback information described in step S20 in FIG. 2.

For another example, in an implementation manner, the processing unit 820 is configured to perform the process of determining that the second terminal device does not send feedback information for target data or target indication information and updating the no-feedback counter described in step S201 in FIG. 3. The processing unit 820 is further configured to perform the process of determining that the updated no-feedback counter value is equal to the out-of-synchronization OOS threshold and updating the OOS reporting counter described in step S202 in FIG. 3. The processing unit 820 is further configured to perform the process of determining whether to report the radio link failure RLF information according to the updated OOS report counter value described in step S203 in FIG. 3.

For another example, in an implementation manner, the processing unit 820 is configured to perform the process of determining that the updated OOS reporting counter value is equal to the first RLF reporting threshold and reporting RLF information described in step S203 in FIG. 3.

For another example, in an implementation manner, the processing unit 820 is configured to perform the step S203 described in FIG. 3 when it is determined that the value of the updated OOS reporting counter is equal to the RLF decision threshold, if it is determined that the IS is reported within the acquired target time period. The total number of times of information is equal to the second RLF reporting threshold, then the process of reporting the above RLF information.

For another example, in an implementation manner, the processing unit 820 is configured to perform the step S203 described in FIG. 3 when it is determined that the value of the updated OOS reporting counter is equal to the RLF decision threshold, if it is determined that the IS is reported within the acquired target time period. The ratio of the total number of information to the value of the updated OOS reporting counter is less than the third RLF reporting threshold, then the above-mentioned RLF information reporting process.

For another example, in an implementation manner, the processing unit 820 is configured to perform the process of determining that the second terminal device has feedback and updating the feedback counter described in step S211 in FIG. 4. The processing unit 820 is further configured to perform the process of determining that the updated feedback counter value is equal to the synchronized IS threshold as described in step S212 in FIG. 4, then reporting IS information and updating the IS reporting counter. The processing unit 820 is further configured to perform the process of determining that the value of the IS reporting counter is equal to the OOS reporting counter clearing threshold and clearing the OOS reporting counter described in step S213 in FIG. 4.

For another example, in an implementation manner, the processing unit 820 is further configured to perform the step of updating the no-feedback counter if it is determined that the second terminal device does not send feedback information for the data or the indication information as described above, and If it is determined that the value of the updated no feedback counter is equal to the third RLF reporting threshold, the step of reporting RLF information. The specific process can be referred to the above, and will not be repeated here.

For another example, in an implementation manner, the processing unit 820 is further configured to perform the step of resetting the no-feedback counter if it is determined that the second terminal device sends feedback information for the data or the indication information as described above. The specific process can be referred to the above, and will not be repeated here.

In the embodiment of the present application, the communication device judges the communication quality of the wireless link based on whether the second terminal device has feedback to the data or instruction information sent by the transceiver unit 810, which solves the problem of the wireless link caused by the absence of a reference signal. Monitoring the problems that cannot be achieved expands the scope of application of wireless link monitoring technology and improves the practicability of wireless link monitoring technology.

When the communication device in the embodiment of the present application is a terminal device, the structural diagram shown in FIG. 9 can also be referred to. FIG. 9 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application. In FIG. 9, the communication device includes a processor 910, a data sending processor 920, and a data receiving processor 930. The processing unit 820 in the foregoing embodiment may be the processor 910 in FIG. 9 and performs corresponding functions. The transceiving unit 810 in the foregoing embodiment may be the sending data processor 920 and/or the receiving data processor 930 in FIG. 9. Although a channel encoder and a channel decoder are shown in FIG. 9, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.

Please refer to FIG. 10, which is a schematic diagram of another structure of a communication device according to an embodiment of the present application. The communication device can be used to implement the wireless link monitoring method described in the first embodiment. The communication device may be the aforementioned first terminal device. The communication device includes a processor 101, a memory 102, a transceiver 103, and a bus system 104.

The memory 101 includes but is not limited to RAM, ROM, EPROM, or CD-ROM, and the memory 101 is used to store related instructions and data. The memory 101 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:

Operating instructions: including various operating instructions, used to implement various operations.

Operating system: including various system programs, used to implement various basic services and process hardware-based tasks.

Only one memory is shown in FIG. 10, of course, the memory can also be set to multiple as needed.

The transceiver 103 may be a communication module or a transceiver circuit. In the embodiment of the present application, the transceiver 103 is used to perform operations such as sending data or indicating information involved in the first embodiment.

The processor 101 may be a controller, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the embodiments of the present application. The processor 101 may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of DSP and microprocessor, and so on.

In a specific application, the various components of the communication device are coupled together through a bus system 104, where the bus system 104 may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus. However, for clear description, various buses are marked as the bus system 104 in FIG. 10. For ease of presentation, FIG. 10 is only schematically drawn.

The present application also provides a communication system, which includes the aforementioned one or more first terminal devices and, one or more second terminal devices.

It should be noted that in practical applications, the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

The embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the wireless link monitoring method described in the foregoing embodiment is implemented.

The embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the wireless link monitoring method described in the foregoing embodiment.

In the above method embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.)). The computer The readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available medium may be a magnetic medium (for example, floppy disk, hard disk, tape ), optical media (for example, high-density digital video disc (DVD), or semiconductor media (for example, solid state disk (SSD)).

The embodiment of the present application also provides a communication device including a processor and an interface. The processor is used to execute the wireless link monitoring method described in the foregoing embodiment.

It should be understood that the foregoing communication device may be a chip, and the foregoing processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor may be a general-purpose processor, which is implemented by reading the software code stored in the memory, and the memory may be integrated in the processor, may be located outside the processor, and exist independently.

It should be understood that the terms "system" and "network" in this embodiment can often be used interchangeably in this embodiment. The term "and/or" in this embodiment is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described in terms of function. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the communication device described above is only illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated into Another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

Through the description of the foregoing implementation manners, those skilled in the art can clearly understand that this application can be implemented by hardware, firmware, or a combination thereof. When implemented by software, the above functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a computer. Take this as an example but not limited to: computer readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures The desired program code and any other medium that can be accessed by the computer. In addition. Any connection can suitably become a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , Fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the media. As used in this application, Disk and disc include compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy discs and Blu-ray discs. Disks usually copy data magnetically, while discs The laser is used to optically copy data. The above combination should also be included in the protection scope of the computer-readable medium.

In short, the above descriptions are only preferred embodiments of the technical solutions of the present application, and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A wireless link monitoring method, characterized in that the method includes:

The first terminal device sends data to the second terminal device;

The first terminal device determines whether to report the radio link failure RLF information according to the second terminal device not sending feedback information for the data.
The method according to claim 1, wherein the data is side row data, and the feedback information is response ACK information or negative response NACK information.
The method according to claim 1 or 2, wherein the method further comprises:

The first terminal device updates the value of the no feedback counter.
The method according to claim 3, wherein the method further comprises:

The first terminal device determines the number of times that the second terminal device has not sent feedback information to the first terminal device continuously according to the value of the no feedback counter.
The method according to claim 4, wherein the first terminal device determines whether to report the radio link failure RLF information according to the second terminal device not sending feedback information for the data, comprising:

The first terminal device determines that the number of times that the second terminal device does not continuously send feedback information to the first terminal device is equal to a preset threshold, and reports the RLF information.
The method according to claim 3, wherein the first terminal device determines whether to report the radio link failure RLF information according to the second terminal device not sending feedback information for the data, comprising:

The first terminal device determines that the value of the updated no feedback counter is equal to the out-of-synchronization OOS threshold, then reports OOS information and updates the OOS reporting counter;

The first terminal device determines whether to report the radio link failure RLF information according to the updated OOS report counter value.
The method according to claim 6, wherein the first terminal device determining whether to report RLF information according to the updated OOS report counter value comprises:

If the first terminal device determines that the value of the updated OOS reporting counter is equal to the first RLF reporting threshold, then the RLF information is reported.
The method according to claim 6, wherein the first terminal device determining whether to report RLF information according to the updated OOS report counter value comprises:

If the first terminal device determines that the value of the updated OOS reporting counter is equal to the RLF decision threshold, the first terminal device acquires the total number of times that the first terminal device reports the IS information in the target time period, where the target time period is determined by The first time when the OOS report counter was reset most recently and the second time when the value of the updated OOS report counter is equal to the RLF decision threshold;

If the first terminal device determines that the total number of times of the IS information is equal to the second RLF reporting threshold, then the RLF information is reported.
A communication device, the communication device being a first terminal device, characterized in that the communication device includes:

The transceiver unit is used to send data to the second terminal device;

The processing unit is configured to determine whether to report the radio link failure RLF information according to the second terminal device not sending feedback information for the data.
The communication device according to claim 9, wherein the data is sideline data, and the feedback information is response ACK information or negative response NACK information.
The communication device according to claim 9 or 10, wherein the processing unit is configured to update the value of the no feedback counter.
The communication device according to claim 11, wherein the processing unit is further configured to:

Determine the number of times that the second terminal device has not sent feedback information to the first terminal device continuously according to the value of the no feedback counter.
The communication device according to claim 12, wherein the processing unit is further configured to:

It is determined that the number of times that the second terminal device has not continuously sent feedback information to the first terminal device is equal to a preset threshold, and the RLF information is reported.
The communication device according to claim 9, wherein the processing unit is further configured to:

If it is determined that the value of the updated no-feedback counter is equal to the out-of-synchronization OOS threshold, then report OOS information and update the OOS report counter;

Determine whether to report the RLF information according to the updated value of the OOS report counter.
The communication device according to claim 14, wherein the processing unit is further configured to:

If it is determined that the value of the updated OOS reporting counter is equal to the first RLF reporting threshold, the RLF information is reported.
The communication device according to claim 14, wherein the processing unit is further configured to:

When it is determined that the value of the updated OOS report counter is equal to the RLF decision threshold, the total number of times the IS information is reported in the target time period is acquired, where the target time period is determined by the first time when the OOS report counter was last reset and Determined at the second moment when the value of the updated OOS report counter is equal to the RLF decision threshold;

If it is determined that the total number of times of the IS information is equal to the second RLF reporting threshold, then the RLF information is reported.
A readable storage medium for storing instructions. When the instructions are executed, the method according to any one of claims 1-8 is realized.
A communication device, characterized by comprising: a processor, a memory and a transceiver;

The memory is used to store computer programs;

The processor is configured to execute a computer program stored in the memory, so that the communication device executes the method according to any one of claims 1-8.
A communication device, characterized by comprising: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to execute the code instructions to execute the method according to any one of claims 1-8.