CN112312456A

CN112312456A - Wireless link monitoring method and communication equipment

Info

Publication number: CN112312456A
Application number: CN201910706231.7A
Authority: CN
Inventors: 张锦芳; 向铮铮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2021-02-02
Anticipated expiration: 2039-07-30
Also published as: WO2021018068A1; CN112312456B

Abstract

The application provides a wireless link monitoring method and a communication device, which can solve the problem that wireless link monitoring cannot be carried out on wireless links such as sidelink and the like between two or more pieces of terminal equipment due to the fact that proper reference signals do not exist. The method comprises the following steps: the first terminal device sends data or indication information to the second terminal device. And the first terminal equipment determines whether to report the Radio Link Failure (RLF) information according to whether the second terminal equipment sends feedback information aiming at the data or the indication information. By adopting the embodiment of the application, the monitoring operation of wireless links such as sidelink and the like between two or more terminal devices can be realized, the application range of the wireless link monitoring technology is expanded, and the practicability of the wireless link monitoring technology is improved.

Description

Wireless link monitoring method and communication equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless link monitoring method and a communication device.

Background

With the continuous development of scientific technology, new internet services such as unmanned driving, automatic driving and virtual reality are emerging continuously, which also makes the requirements on wireless communication technology higher and higher. In a wireless communication system, the communication quality of a wireless link directly determines the capability of data transmission, and therefore, how to reasonably monitor the communication quality of the wireless link becomes a great research focus at present.

In the prior art, in order to save communication resources, a new wireless link, namely, a Sidelink (SL), is defined for communication between two terminal devices. Two or more terminal devices may communicate directly over a sidelink without relying on the forwarding operations of the base station. In a scenario where a base station and a terminal device perform data transmission via an uplink or a downlink, the base station may periodically transmit reference signals for Radio Link Monitoring (RLM), such as a Synchronization Signal Block (SSB) or a channel state information reference signal (CSI-RS), to the terminal device, and the terminal device may determine the communication quality of the uplink or the downlink by measuring the signal quality of the reference signals. However, in a scenario where a certain terminal device (for ease of understanding, the description is replaced with a transmitting device) performs data transmission with another terminal device (for ease of understanding, the description is replaced with a receiving device) through a sidelink, on the one hand, the transmitting device cannot transmit a synchronization signal block. On the other hand, since the csi-rs is transmitted with the data, if the receiving device fails to decode the control channel, the receiving device cannot receive the data, and thus cannot measure the signal quality of the csi-rs transmitted with the data. Therefore, in a scenario of data transmission through the sidelink, the terminal device cannot implement wireless link monitoring of the sidelink based on a reference signal such as a synchronization signal block or a channel state information reference signal. Therefore, how to reasonably realize wireless link monitoring is an urgent technical problem to be solved for the sidelink.

Disclosure of Invention

According to the method provided by the embodiment of the application, the problem that wireless links such as sidelink and the like between two or more terminal devices cannot be monitored due to the fact that no proper reference signal exists can be solved, the application range of the wireless link monitoring technology is expanded, and the practicability of the wireless link monitoring technology is improved.

In a first aspect, an embodiment of the present application provides a wireless link monitoring method. The first terminal equipment firstly sends data or indication information to the second terminal equipment. And then, the first terminal equipment determines whether to report the Radio Link Failure (RLF) information according to whether the second terminal equipment sends feedback information aiming at the data or the indication information.

In the method provided by the embodiment of the application, the first terminal device can judge the communication quality of the wireless link between the two terminal devices based on whether the second terminal device feeds back the data or the indication information sent by the second terminal device, so that the problem that the wireless link monitoring cannot be realized due to the fact that no reference signal exists in the wireless links such as sidelink between the two or more terminal devices is solved, the application range of the infinite link monitoring technology is expanded, and the practicability of the wireless link monitoring technology is improved.

With reference to the first aspect, in a possible implementation manner, if the second terminal device does not send feedback information for the data or the indication information, the first terminal device updates the no-feedback counter. And if the first terminal equipment determines that the value of the updated non-feedback counter is equal to the out-of-synchronization OOS threshold value, reporting the OOS information and updating an OOS reporting counter. And the first terminal equipment determines whether to report the RLF information according to the updated value of the OOS reporting counter.

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 a first RLF reporting threshold, the RLF information is reported. Whether the target wireless link fails or not is determined by whether the number of times that the first terminal device continuously and uninterruptedly sends the OOS information to the high layer reaches a first RLF reporting threshold, the method is simple and easy to implement, and the efficiency of wireless link monitoring can be improved.

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 total number of times that the first terminal device reports the IS information in the target time period may be obtained. Here, the target time interval is determined by a first time when the OOS reporting counter is reset last time and a second time when the updated value of the OOS reporting counter is equal to the RLF decision threshold. And if the first terminal equipment determines that the total times are equal to a second RLF reporting threshold, reporting 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 total number of times that the first terminal device reports the IS information in the target time period may be obtained. Here, the target time interval is determined by a first time when the OOS reporting counter is reset last time and a second time when the updated value of the OOS reporting counter is equal to the RLF decision threshold. And the first terminal equipment obtains the ratio of the total times to the value of the updated OOS reporting counter. And if the first terminal equipment determines that the ratio is smaller than a third RLF reporting threshold, reporting the RLF information. The target wireless link IS determined to be effective by combining the reporting times of the OOS information and the IS information in the target time period, so that misjudgment caused by short-time communication quality fluctuation of the target wireless link can be avoided, and the accuracy of wireless link monitoring can be improved.

With reference to the first aspect, in a feasible implementation manner, if the second terminal device sends feedback information for the data or the indication information, the first terminal device updates a feedback counter. And if the first terminal equipment determines that the updated value of the counter with feedback IS equal to the synchronous IS reporting threshold, reporting IS information and updating an IS reporting counter. If the first terminal equipment determines that the updated value of the IS reporting counter IS equal to the zero clearing threshold of the OOS reporting counter, the OOS reporting counter IS reset and the RLF information IS not reported.

With reference to the first aspect, in a possible implementation manner, the data is sidelink data, and the feedback information is Acknowledgement (ACK) information or Negative Acknowledgement (NACK) information.

With reference to the first aspect, in a possible implementation manner, the data is sideline data, and the feedback information is a CSI measurement report.

With reference to the first aspect, in a feasible implementation manner, the indication information is CSI measurement report indication information, and the feedback information is a CSI measurement report.

With reference to the first aspect, in a possible implementation manner, the above-mentioned wireless link monitoring method is applied to the sidelink SL.

In a second aspect, an embodiment of the present application provides a communication apparatus. The communication device is the first terminal device. The communication device includes means for performing the radio link monitoring method provided in any one of the possible implementations of the first aspect, and thus can also achieve the beneficial effects (or advantages) of the radio link monitoring method provided in the first aspect.

In a third aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus is the first terminal device. The communication device includes a memory, a processor, and a transceiver. The processor is configured to invoke the code stored in the memory to perform the radio link monitoring method provided in any one of the possible implementations of the first aspect.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus is the first terminal device. The communication device includes: a processor and interface circuitry. The interface circuit is used for receiving code instructions and transmitting the code instructions to the processor. The processor is configured to execute the code instructions to implement the radio link monitoring method provided in any feasible implementation manner of the first aspect, and also to implement the beneficial effects (or advantages) of the radio link monitoring method provided in the first aspect.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the radio link monitoring method provided in any one of the possible implementation manners of the first aspect is implemented, and beneficial effects (or advantages) of the radio link monitoring method provided in the first aspect can also be implemented.

In a sixth aspect, an embodiment of the present application provides a computer program product including instructions, where when the computer program product runs on a computer, the computer is enabled to execute the radio link monitoring method provided in the first aspect, and beneficial effects of the radio link monitoring method provided in the first aspect can also be achieved.

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

By adopting the method provided by the embodiment of the application, the problem that the wireless link monitoring cannot be realized due to the fact that no reference signal exists in the wireless links such as the sidelink between two or more pieces of terminal equipment can be solved, the application range of the wireless link monitoring technology is expanded, and the practicability of the wireless link monitoring technology is improved.

Drawings

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

fig. 2 is a flow chart of a wireless link monitoring method according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart of a radio link monitoring method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a radio link monitoring method according to an embodiment of the present application;

fig. 5 is a diagram illustrating an example of a method for monitoring a wireless link according to an embodiment of the present application;

fig. 6 is a diagram illustrating a method for monitoring a wireless link according to another embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

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

The embodiment of the application provides a method for monitoring a wireless link, which is suitable for various wireless communication systems capable of carrying out data transmission through a sidelink. For example: a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation (5G) system, or a new radio NR (UMTS) system, etc.

The first terminal device or the second terminal device referred to in the embodiments of the present application may be a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or a user equipment, and may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a roadside unit, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, the embodiments of the present application do not limit this. For convenience of understanding, in the embodiments of the present application, the first terminal device or the second terminal device will be collectively described.

Referring to fig. 1, fig. 1 is a schematic view of a wireless link scenario provided in an embodiment of the present application. The wireless link may be referred to as a sidelink. The so-called sidelink is a new radio link defined in wireless networks for direct communication between two terminal devices. Information or data can be directly transmitted between two terminal devices through the sidelink without being transmitted through a relay device such as a base station, as shown in fig. 1. Here, it should be noted that, in the sidelink according to the embodiment of the present application, a physical layer sidelink feedback channel (PSFCH) and a physical layer sidelink shared channel (PSSCH) are also defined. After the first terminal device sends data to the second terminal device, the second terminal device may feed back Acknowledgement (ACK) information or Negative Acknowledgement (NACK) information to the first terminal device through the physical layer side downlink feedback channel or the physical layer side downlink shared channel. For example, assume that a first terminal device sends a packet to a second terminal device via a sidelink. The second terminal device decodes the control channel, and if the second terminal device cannot correctly decode the control channel, the second terminal device cannot determine whether the first terminal device sends the data packet to the second terminal device, and the second terminal device cannot feed back ACK information or NACK information 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 may continue to decode the data packet, and if the second terminal device succeeds in decoding, may feed back ACK information to the first terminal device, and if the second terminal device fails in decoding, may feed back NACK information to the first terminal device. The second terminal device may also feed back a Channel State Information (CSI) measurement report, interference information, and the like to the first terminal device through the physical layer side feedback channel or the physical layer side shared channel, which is not limited in this case.

Next, taking the example that the second terminal device feeds back the CSI measurement report to the first terminal device, after the first terminal device sends CSI measurement report indication information to the second terminal device, if the second terminal device successfully decodes the control channel and receives the CSI measurement report indication information, the second terminal device may feed back the CSI measurement report to the first terminal device. And if the second terminal equipment fails to decode the control channel, the CSI measurement report is not fed back to the first terminal equipment.

Further, in the scenario shown in fig. 1, on the one hand, the first terminal device cannot transmit a Synchronization Signal Block (SSB) to the second terminal device. On the other hand, since the CSI-RS is transmitted along with the data, if the first terminal device transmits the CSI-RS to the second terminal device along with the data but the second terminal device fails to decode the control channel, the second terminal device cannot receive the data, and thus cannot measure the signal quality of the CSI-RS transmitted along with the data. Therefore, in the scenario as shown in fig. 1, the first terminal device cannot implement wireless link monitoring of the sidelink based on a reference signal such as a synchronization signal block or a channel state information reference signal.

The technical problem to be solved by the wireless link monitoring method provided by the embodiment of the application is that: how to realize the wireless link monitoring of wireless links such as sidelink to expand the application range of wireless link monitoring technology, promote the practicality of wireless link monitoring technology.

Example one

Referring to fig. 2, fig. 2 is a flowchart illustrating a radio link monitoring method according to an embodiment of the present disclosure. As shown in fig. 2, the method for monitoring a wireless link includes the following steps:

s10, the first terminal device sends data or indication information to the second terminal device.

In some possible embodiments, when the first terminal device needs to perform Radio Link Monitoring (RLM) on a certain radio link between the first terminal device and the second terminal device (for convenience of understanding and distinction, a target radio link is used instead of the description below), the first terminal device may send data or indication information to the second terminal device through the target radio link. Optionally, the target wireless link is a sidelink used for data transmission between the first terminal device and the second terminal device, and a physical layer sidelink feedback channel and a physical layer sidelink shared channel are defined in the sidelink. Here, it can be understood that, in the implementation monitoring of the target wireless link, the first terminal device may send multiple copies of data or indication information to the second terminal device. In this embodiment of the present application, a first terminal device sends a certain piece of data (for convenience of understanding and distinguishing, the description is replaced with target data below) or certain indication information (for convenience of understanding and distinguishing, the description is replaced with target indication information below), and based on an example of a process in which the second terminal device determines whether a target wireless link fails according to whether feedback exists for the target data or the target indication information, a whole monitoring process of the target wireless link is simply described.

Optionally, in a specific implementation, the target data may be side-row data. The target indication information may be any one of CSI measurement reporting indication information, Reference Signal Received Power (RSRP) feedback indication information, Reference Signal Received Quality (RSRQ) feedback indication information, and Received Signal Strength Indicator (RSSI) feedback indication information, which is not limited herein. Of course, in the embodiments of the present application, the target data or the target indication information will be described in a unified manner, and is not particularly limited.

Optionally, after the first terminal device determines that it needs to perform the wireless link monitoring on the target wireless link, in a feasible implementation manner, if the first terminal device detects that a preset sending period arrives, the first terminal device may send the target data or the target indication information to the second terminal device through the target wireless link. Or, in another possible implementation manner, if the first terminal device detects feedback information of the target data or the target indication information that the second terminal device has sent for the last time before the preset sending period arrives, new target data or target indication information may be sent to the second terminal device again through the target wireless link immediately. If the first terminal device still does not detect the feedback information of the target data or the target indication information which is sent by the second terminal device for the last time when the preset sending period is reached, new target data or target indication information can be sent to the second terminal device again through the target wireless link immediately.

And S20, the first terminal equipment determines whether to report the RLF information according to whether the second terminal equipment sends feedback information aiming at the data or the indication information.

In some possible embodiments, after the first terminal device sends the target data or the target indication information to the second terminal device, the first terminal device may detect whether the second terminal device sends feedback information corresponding to the target data or the target indication information to the second terminal device through the target wireless link. Then, the first terminal device may determine whether it needs to report Radio Link Failure (RLF) information according to the detection result.

In a specific implementation, when the target data is sidestream data, the feedback information is information indicating whether the second terminal device receives the sidestream data. Such as Acknowledgement (ACK) information for indicating successful data reception or Negative Acknowledgement (NACK) information for indicating failed data reception. In another specific implementation, when the target data is sidelink data, the feedback information may also be a CSI measurement report, an RSRP report, an RSRQ report, or an RSSI report for indicating whether the second terminal device successfully receives the target data. 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 is configured before factory shipment, so that the second terminal device feeds back a CSI measurement report, an RSRP report, an RSRQ report, or an RSSI report to the first terminal device as long as the second terminal device successfully receives the target data in the whole wireless link monitoring process. In another possible implementation manner, when the target indication information is CSI measurement reporting indication information, RSRP feedback indication information, RSRQ feedback indication information, or RSSI feedback indication information, the feedback information may also be a CSI measurement report, an RSRP report, an RSRQ report, or an RSSI report for indicating whether the second terminal device successfully receives the CSI measurement reporting indication information, RSRP feedback indication information, RSRQ feedback indication information, or RSSI feedback indication information.

In a specific implementation, after the first terminal device sends the target data or the target indication information to the second terminal device, it may detect whether the second terminal device sends feedback information for the target data or the target indication information through the target wireless link in real time within a preset detection period (it may be understood that the detection period may be the aforementioned sending cycle). If the first terminal device detects the feedback information in the detection time period, it can be determined that the second terminal device has feedback. If the first terminal device does not detect the feedback information in the detection period, it may be determined that the second terminal device does not have feedback.

The following describes a process of determining whether to report the RLF information by the first terminal device, in combination with two different scenarios, i.e., a scenario where the second terminal device has feedback and no feedback.

Scene one: second terminal equipment has no feedback

Referring to fig. 3, fig. 3 is a schematic flow chart of a method for monitoring a wireless link according to an embodiment of the present disclosure. As can be seen from fig. 3, in the scenario that 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 the data or the indication information, the first terminal device updates the non-feedback counter.

In some possible embodiments, if the second terminal device does not send feedback information for the target data or the target indication information (i.e., the second terminal device has no feedback), the first terminal device may update a value of a non-feedback counter configured in advance therein. It can be understood that the value of the feedback-less counter is mainly used to indicate the number of times that the second terminal device continuously does not send feedback information to the first terminal device. In practical application, the process of updating the non-feedback counter by the first terminal device is a process of accumulating the value of the non-feedback counter. For example, assuming that the initial value of the feedback-less 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 feedback-less counter to 1, and if the first terminal device transmits the target data or the target indication information again and determines that the second terminal device has no feedback again, the first terminal device may update the value of the feedback-less counter from 1 to 2, and so on. Of course, it is understood that the value accumulated by the first terminal device updating the non-feedback counter each time may be not only 1, but also other positive integers besides 0, and is not limited herein. Further, if the first terminal device determines that the second terminal device has no feedback and the value of the feedback counter pre-configured in the first terminal device is not zero, the first terminal device may also clear the value of the feedback counter and start to count again. Here, the value of the feedback counter is mainly used to indicate the number of times the second terminal device continuously transmits the feedback information.

Here, it should be noted that the value of the no feedback counter indicates the number of times that the second terminal device has not continuously transmitted the feedback information, that is, the no feedback counter is reset and starts counting again as long as the second terminal device has feedback. Similarly, the value of the feedback counter indicates the number of times that the second terminal device continuously sends the feedback information, that is, as long as the second terminal device does not feedback, the feedback counter is reset and starts counting again. For example, assuming that the initial values of the no-feedback counter and the feedback counter are both 0, and at the adjacent time T1 and T2, the first terminal device transmits the target data 2 times and does not receive the feedback information, the value of the no-feedback counter is 2. At a time T3 adjacent to the time T2, the first terminal device sends the third target data to the second terminal device, and detects the feedback information, the first terminal device needs to clear the value of the no-feedback counter and update the value of the feedback counter to 1. At a time T4 adjacent to the time T3, when the first terminal device transmits the fourth target data to the second terminal device and detects feedback information, the value of the no-feedback counter remains 0, and the value of the feedback counter is updated to 2. At a time T5 adjacent to the time T4, when 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, the value of the feedback-free counter is updated from 0 to 1, and so on. In other words, the above-mentioned non-feedback counter counts the number of times that the first terminal device does not receive feedback information from the second terminal device continuously, and the situation that the second terminal device has feedback does not occur in the process of continuously accumulating the values of the non-feedback counter. The above-mentioned statistics of the feedback counter is that the first terminal device continuously receives the number of times of feedback information from the second terminal device, and in the process of continuously accumulating the values of the feedback counter, the situation that the second terminal device does not have feedback does not occur.

S202, if the first terminal device determines that the updated value of the feedback-less counter is equal to an out of synchronization (OOS) threshold, reporting the OOS information and updating an OOS reporting counter.

In some possible embodiments, after updating the value of the feedback-less counter, the first terminal device may further determine whether the updated value of the feedback-less counter is equal to a preset OOS threshold. If the first terminal device determines that the updated value of the feedback-less counter is equal to the OOS threshold, the first terminal device may report the OOS information to an upper layer, such as a Medium Access Control (MAC) layer or a Radio Resource Control (RRC) layer, to inform the upper layer that the target radio link is out of synchronization. Meanwhile, the first terminal device can 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 that the first terminal device continuously reports the OOS information to the higher layer from the time when the OOS reporting counter was last reset to the current time.

It should be noted that, from the perspective of the protocol stack, the processes of updating the no-feedback counter, determining whether to report the OOS information, and updating the OOS reporting counter by the first terminal device are all implemented in the physical layer. When it is determined that the OOS information needs to be reported, the first terminal device reports the OOS information from its physical layer to a higher layer such as an MAC layer or an RRC layer. Similarly, the subsequent processes of updating the feedback counter and the IS reporting counter and determining reporting of the IS information are also realized in the physical layer, and the IS information reporting process IS also carried out from the physical layer to the high 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 embodiment of the present application are all reporting operations of the first terminal device from the physical layer to the higher layers such as the MAC layer or the RRC layer, which will not be described again hereinafter.

In practical applications, the process of updating the OOS counter by the first terminal device may be a process of accumulating values of the OOS counter. For example, assuming that the initial value of the OOS counter is 0, after the first terminal device reports the OOS information to the upper layer once, the first terminal device may update the value of the OOS reporting counter to 1, and if the first terminal device reports the OOS information to the upper layer again after a period of time, 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 value accumulated by the first terminal device updating the OOS report counter each time may be not only 1, but also other positive integers except 0, and is not limited herein.

Further, after the first terminal device reports the OOS information to the upper layer, the first terminal device may also reset a value of a pre-configured In Synchronization (IS) reporting counter, and restart counting. Here, the value of the IS report 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, here, the continuous reporting of the IS information to the higher layer IS the same as the scenario that the first terminal device continuously receives the feedback information from the second terminal device, which IS described above, that IS, in the process of continuously accumulating the value of the IS reporting counter, the situation that the first terminal device reports the OOS information does not occur, and once the situation occurs, the value of the IS reporting counter IS cleared.

S203, the first terminal device determines whether to report the RLF information according to the updated value of the OOS reporting counter.

In some possible embodiments, after the first terminal device finishes updating the OOS reporting counter, it may determine whether to report the RLF information to the higher layer according to a value of the updated OOS reporting counter. In a specific implementation, in the embodiment of the present application, two different scenarios, that IS, the number of times that the first terminal device continuously and uninterruptedly reports the OOS information to the higher layer IS counted by the OOS report counter (that IS, in a process of continuously accumulating values of the OOS report counter, the first terminal device does not report the IS information to the higher layer), or that IS counted by the OOS report counter, two different scenarios, that IS, the total number of times that the first terminal device reports the OOS information to the higher layer within a certain period of time (for convenience of understanding and distinction, hereinafter, a target period of time IS used instead of description), are provided, and two manners for determining whether to report the RLF information are provided, such as a first determination manner and a second determination manner described below.

The determination method is as follows:

in a specific implementation, in a scenario where the OOS reporting counter counts that the first terminal device continuously and uninterruptedly reports the OOS information to a higher layer, after the OOS reporting counter is updated, the first terminal device may determine whether a value of the updated OOS reporting counter is equal to a preset first RLF reporting threshold. If the first terminal device determines that the updated value of the OOS reporting counter is equal to the first RLF reporting threshold, the first terminal device may determine that the target radio link has failed, and may report the 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, new target data or target indication information may be sent to the second terminal device, and the monitoring operation may be repeated. Here, whether the target radio link is failed or not is determined by judging whether the number of times that the first terminal device continuously and uninterruptedly sends the OOS information to the higher layer reaches the first RLF reporting threshold, the method is simple and easy to implement, and the efficiency of monitoring the radio link can be improved.

Determining a second mode:

in a specific implementation, in a scenario where the OOS report counter counts the total number of times that the first terminal device reports the OOS information to the higher layer in the target time period, after the OOS report counter is updated, the first terminal device may determine whether the value of the OOS report counter is equal to a 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 that the first terminal device reports the IS information in the target time period. Here, the target time interval refers to a time interval between a first time when the OOS reporting counter is cleared last time and a second time when the updated value of the OOS reporting counter is equal to the RLF decision threshold. It can be understood that, since the value of the IS reporting counter refers to the number of times that the first terminal device continuously and uninterruptedly reports the IS information, in the process of accumulating the values of the IS reporting counter, if the first terminal device reports the OOS information, the value of the IS reporting counter IS cleared. Therefore, the first terminal device may 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 determine the sum of 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 as the total number of times that the first terminal device reports the IS information in the target time period. Then, if the first terminal device determines that the total number of times is equal to the second RLF reporting threshold, it may determine that the target radio link is failed, and report the RLF information to a higher layer. Alternatively, the first terminal device may calculate a ratio between the total number of times and the value of the updated OOS reporting counter. And if the first terminal equipment determines that the ratio is smaller than a preset third RLF reporting threshold, the first terminal equipment can determine that the target radio link fails and report the RLF information to a high 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 monitoring operation. In addition, after the first terminal device determines that the target radio link IS invalid and reports the RLF information to the higher layer, the first terminal device may also clear all the counters with feedback, the counters without feedback, the OOS reporting counter and the IS reporting counter, and repeat the operation of monitoring the radio link again.

The target wireless link IS determined to be effective by combining the reporting times of the OOS information and the IS information in the target time period, so that misjudgment caused by short-time communication quality fluctuation of the target wireless link can be avoided, and the accuracy of wireless link monitoring can be improved.

Scene two: the second terminal device having feedback

Referring to fig. 4, fig. 4 is a schematic flow chart of a method for monitoring a wireless link according to an embodiment of the present disclosure. As can be seen from fig. 4, in the scenario that 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 the data or the indication information, the first terminal device updates a feedback counter.

In some possible embodiments, if the second terminal device sends feedback information for the data or indication information (i.e. 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 receives the feedback information from the second terminal device continuously and uninterruptedly. That is, there is no situation that the first terminal device does not receive the feedback information from the second terminal device during the process that the value of the feedback counter is continuously accumulated, and once this happens, the value of the feedback counter is reset. In practical applications, the process of updating the feedback counter by the first terminal device is a process of accumulating the value of the feedback counter, and the specific process is similar to the process of updating the non-feedback counter by the first terminal device, which is described above, and is not described herein again. Similarly, when the first terminal device updates the feedback counter, the first terminal device may also reset the non-feedback counter and restart counting.

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

In some possible embodiments, 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 a preset IS threshold. If the first terminal device determines that the updated value of the counter with feedback IS equal to the preset synchronization IS threshold, the first terminal device may report the IS information to the upper layer, that IS, it may tell the upper layer that the target wireless link IS synchronized. Meanwhile, the first terminal equipment can also update the value of the IS reporting counter. In practical applications, the process of updating the IS counter by the first terminal device may be a process of accumulating the value of the IS counter. For example, assuming that the initial value of the IS counter IS 0, after the first terminal device reports the IS information to the upper layer once, the first terminal device may update the value of the IS reporting counter to 1, and if the first terminal device reports the IS information to the upper layer again after a period of time, the first terminal device may update the value of the IS reporting counter from 1 to 2, and so on. Of course, it can be understood that the value accumulated by the first terminal device updating the IS report counter each time may be not only 1, but also other positive integers except 0, and IS not limited herein. 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 reports the IS information to the higher layer. That IS, in the process of continuously accumulating the value of the IS report counter, the situation that the first terminal device reports the OOS information to the higher layer does not occur. Once the first terminal device reports the OOS information to the higher layer, the value of the IS reporting counter IS cleared and counting IS restarted.

S213, if the first terminal device determines that the updated IS reporting counter value IS equal to the zero clearing threshold of the OOS reporting counter, the OOS reporting counter IS reset and does not report the RLF information.

In some possible embodiments, after the first terminal device finishes updating the IS reporting counter, the first terminal device may determine whether the updated IS reporting counter value IS equal to the OOS reporting counter zero clearing threshold. If the first terminal device determines that the updated value of the IS reporting counter IS equal to the zero clearing threshold of the OOS reporting counter, the first terminal device may clear the value of the OOS reporting counter and the IS counter, and allow the OOS reporting counter and the IS reporting counter to restart 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 updated value of the IS reporting counter IS not equal to the OOS reporting counter zero clearing threshold, it may continue to send new target data or target indication information to the second terminal device, and repeat the monitoring operation.

Optionally, in the whole wireless link monitoring process, the first terminal device may continuously send a plurality of target data to the second terminal device until the wireless link monitoring is completed. Or, the first terminal device may also continuously send a plurality of target indication information to the second terminal device until the radio link monitoring is completed. Or, the first terminal device may continuously send a plurality of target data or target indication information to the second terminal device until the radio link monitoring is completed. For example, the first terminal device may continuously send the target indication information to the second terminal device 5 times after continuously sending the target data to the second terminal device 5 times, and so on until completing the wireless link monitoring.

Optionally, in a specific implementation, as described above, the parameters such as the OOS threshold, the IS threshold, the first RLF threshold, the second RLF threshold, and the third RLF threshold may be empirical values obtained through multiple wireless network monitoring tests, or numerical values determined by the network device according to real-time services or network states, which IS not limited herein. In addition, the parameters such as the OOS threshold, the IS threshold, the first RLF threshold, the second RLF threshold, and the third RLF threshold may be configured in advance in the first terminal device, or may be configured in real time by the network device for the first terminal device. The configuration information required by the second terminal device may be configured by the network device in real time, or may be issued to the first terminal device by the network device first, and then configured by the first terminal device, or may be configured when the second terminal device leaves the factory, which is not specifically limited herein.

In addition, it should be noted that the radio link monitoring method provided in the embodiment of the present application may be used for monitoring a sidelink between two terminal devices (e.g., a first terminal device and a second terminal device), and may also be used for monitoring a sidelink between three or more terminal devices, which is not limited herein.

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

Next, an exemplary description will be given of a procedure in which the first terminal device determines whether to report the RLF information based on the first determination method with reference to fig. 5. Here, fig. 5 is a diagram illustrating an example of a method for monitoring a wireless link according to an embodiment of the present application. As shown in fig. 5, it is assumed that the first RLF reporting threshold is 4, and the OOS reporting counter clear threshold is 2. The first terminal device reports the OOS information to the higher layer at time t1, time t2, and time t3, and therefore, at time t3, the value of the OOS reporting counter is 3. At time t4 and time t5, the first terminal device reports IS information to a higher layer. At this time, if the value of the IS reporting counter IS 2 and IS equal to the set OOS reporting clear threshold, the first terminal device may reset the OOS reporting counter at time t5, and continue to send new target data or target indication information. At time t6 to time t9, the first terminal device reports the OOS information for 4 times continuously, and then the value of the OOS reporting counter is 4, which is equal to the preset first RLF reporting threshold, and then at time t9, the first terminal device may report the RLF information to the higher layer.

Next, an exemplary description will be given of a procedure in which the first terminal device determines whether to report the RLF information based on the second determination method with reference to fig. 6. Here, fig. 6 is a diagram of another example of a method for monitoring a wireless link according to an embodiment of the present application. As shown in fig. 6, it is assumed that the RLF decision threshold is 4, the second RLF reporting threshold is 2, and the OOS reporting counter clear threshold is 3. The first terminal device reports the OOS information to the higher layer at time t1 and time t2, and thus, at time t2, the value of the OOS reporting counter is 2. The first terminal device reports the IS information three times continuously at time t3, time t4 and time t5, and the value of the IS report counter IS 3 at this time. The first terminal device may determine that the value of the IS report count IS equal to the preset zero clearing threshold of the OOS report counter, and then at time t5, the first terminal device may reset the OOS report counter, may zero 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 the OOS information, and at this time, the value of the OOS reporting counter is 1. At time t7 and time t8, the first terminal device reports the IS information twice continuously, at this time, the value of the OOS reporting counter IS still 1, and the value of the IS reporting counter IS 2. And at the time point t9 to the time point t11, the first terminal device continuously reports the OOS information for three times, and the indication of the OOS reporting counter is 4 at this time. At time t11, the value of the OOS reporting counter is equal to the RLF decision threshold, and the first terminal device may determine that the period from time t5 to time t11 is the aforementioned target period. The first terminal equipment can obtain the total times of reporting the IS information in the target time period. Since the IS report counter IS not reset in the target time period, the total number of times that the first terminal device reports the IS information in the target time period IS the value of the IS report counter at the time t11, which IS 2. The first terminal device determines that the total number of times is equal to the second RLF reporting threshold, and reports RLF information to the higher layer at time t 11.

In the embodiment of the application, the first terminal device may determine the communication quality of the wireless link between the two terminal devices based on whether the second terminal device feeds back the data or the indication information sent by the second terminal device, so that the problem that the wireless link cannot be monitored due to the fact that no reference signal exists in the wireless link such as a sidelink is solved, the application range of the wireless link monitoring technology is expanded, and the practicability of the wireless link monitoring technology is improved.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. The communication device may be the first terminal device described above, and the communication device may be configured to perform the functions of the first terminal device in the first embodiment. For ease of illustration, only the main components of the communication device are shown in fig. 7. As can be seen from fig. 7, the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input/output device. The processor is mainly used for processing a communication protocol and communication data, controlling the communication device, executing a software program, processing data of the software program, and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices such as touch screens, display screens, keyboards, etc. are used primarily to receive data input by, and output data to, a user using the communication device. It should be noted that in some scenarios, the communication device may not include an input/output device.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7. 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 a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

As an alternative implementation manner, the processor may include a baseband processor and/or a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor in fig. 4 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by 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 the communication data may be built in the processor, or may 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 embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the communication device, and the processor having the processing function may be regarded as a processing unit of the communication device. As shown in fig. 7, the communication apparatus includes a transceiving unit 710 and a processing unit 720. Herein, a transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiver 710 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiver 710 may be regarded as a transmitting unit, that is, the transceiver 710 includes a receiving unit and a transmitting unit. Here, the receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver unit 710 is configured to perform the operations of transmitting and receiving the target data or the target indication information in the first embodiment, and the processing unit 720 is configured to perform other operations besides the operations of transmitting and receiving the target data or the target indication information in the first embodiment.

For example, in one implementation, the transceiver unit 710 is configured to perform the sending process of the target data or the target indication information in step S10 in fig. 2. Alternatively, in the case that the second terminal device has feedback, the transceiver unit 710 is further configured to perform the process of receiving the target data or the feedback information corresponding to the target indication information from the second terminal device as described in step S20 in fig. 2. The processing unit 720 is configured to execute the process in step S20 in fig. 2, where the process is described in determining whether to report the RLF information according to whether the second terminal device sends the feedback information.

For another example, in one implementation, the processing unit 720 is configured to execute the process of determining that the second terminal device does not send feedback information for the target data or the target indication information and updating the no feedback counter in step S201 in fig. 3. The processing unit 720 is further configured to perform the process of determining that the updated value of the feedback-less counter is equal to the out-of-sync OOS threshold and updating the OOS reporting counter in step S202 in fig. 3. The processing unit 720 is further configured to perform a process, which is described in step S203 in fig. 3, of determining whether to report the RLF information according to the updated value of the OOS reporting counter.

For another example, in an implementation manner, the processing unit 720 is configured to perform a procedure, which is described in step S203 in fig. 3, of determining that the updated value of the OOS reporting counter is equal to the first RLF reporting threshold and reporting the RLF information.

For another example, in an implementation manner, the processing unit 720 IS configured to perform a procedure of reporting the RLF information if it IS determined that the total number of times of reporting the IS information in the obtained target time period IS equal to a second RLF reporting threshold when it IS determined that the updated value of the OOS reporting counter IS equal to the RLF decision threshold, which IS described in step S203 in fig. 3.

For another example, in an implementation manner, the processing unit 720 IS configured to perform a procedure of reporting the RLF information if it IS determined that a ratio of the total number of times of reporting the IS information in the obtained target time period to the value of the updated OOS reporting counter IS smaller than a third RLF reporting threshold when it IS determined that the value of the updated OOS reporting counter described in step S203 in fig. 3 IS equal to the RLF decision threshold.

For another example, in one implementation, the processing unit 720 is configured to perform a process of determining that the second terminal device has feedback and updating the feedback counter as described in step S211 in fig. 4. The processing unit 720 IS further configured to perform the process, described in step S212 in fig. 4, of reporting IS information and updating an IS reporting counter when it IS determined that the updated value of the counter with feedback IS equal to the synchronous IS threshold. The processing unit 720 IS further configured to execute the process described in step S213 in fig. 4, where the process of determining that the value of the IS reporting counter IS equal to the OOS reporting counter clear threshold and clearing the OOS reporting counter.

In the embodiment of the present application, the communication device determines the communication quality of the wireless link based on whether the second terminal device feeds back the data or the indication information sent by the transceiver unit 10, which solves the problem that the wireless link monitoring cannot be realized because no reference signal exists, expands the application range of the wireless link monitoring technology, and improves the practicability of the wireless link monitoring technology.

When the communication apparatus in the embodiment of the present application is a terminal device, reference may also be made to the structure diagram shown in fig. 8. Fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application. In fig. 8, the communication device includes a processor 810, a transmit data processor 820, and a receive data processor 830. The processing unit 720 in the above embodiments may be the processor 810 in fig. 8, and performs corresponding functions. The transceiver unit 710 in the above embodiments may be the transmit data processor 820 and/or the receive data processor 830 in fig. 8. Although fig. 8 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Referring to fig. 9, fig. 9 is a schematic view of another structure of a communication device according to an embodiment of the present disclosure. The communication device may be used to implement the radio link monitoring method described in the first embodiment. The communication device may be the first terminal apparatus described above. The communication device includes: a processor 91, a memory 92, a transceiver 93 and a bus system 94.

The memory 91 includes, but is not limited to, a RAM, a ROM, an EPROM, or a CD-ROM, and the memory 91 is used for storing relevant instructions and data. The memory 91 stores elements, executable modules or data structures, or subsets thereof, or expanded sets thereof:

and (3) operating instructions: including various operational instructions for performing various operations.

Operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.

Only one memory is shown in fig. 9, but of course, the memory may be provided in plural numbers as necessary.

The transceiver 93 may be a communication module, a transceiver circuit. In the embodiment of the present application, the transceiver 93 is used to perform the operations of sending data or indicating information and the like in the first embodiment.

The processor 91 may be a controller, CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure of the embodiments of the application. The processor 91 may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs and microprocessors, and the like.

In a particular application, the various components of the communication device are coupled together by a bus system 94, wherein the bus system 94 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 94 in fig. 9. For ease of illustration, it is only schematically drawn in fig. 9.

The application also provides a communication system, which comprises the 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 having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memories.

The embodiments of the present application also provide a computer-readable medium, on which a computer program is stored, and the computer program, when executed by a computer, implements the wireless link monitoring method described in the above embodiments.

The embodiment of the present application further provides a computer program product, and when executed by a computer, the computer program product implements the wireless link monitoring method described in the above embodiment.

In the above method embodiments, the implementation may be wholly or partly implemented by software, hardware, firmware or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in, or transmitted from, a computer-readable storage medium to another computer-readable storage medium, for example, from one website, computer, server, or data center, over a wired (e.g., coaxial cable, fiber optics, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.) network, the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more integrated servers, data centers, etc., the available medium may be magnetic medium (e.g., floppy disk, hard disk, magnetic tape), optical medium (e.g., high density digital video disc (digital video disc, DVD), or semiconductor media (e.g., Solid State Disk (SSD), etc.

An embodiment of the present application further provides a communication apparatus, which includes a processor and an interface. The processor is configured to perform the wireless link monitoring method described in one of the above embodiments.

It should be understood that the communication device may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.

It should be understood that the terms "system" and "network" in this embodiment are often used interchangeably in this embodiment. The term "and/or" in this embodiment is only one kind of association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described communication devices are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

In addition, 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 are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented in hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of wireless link monitoring, the method comprising:

the first terminal equipment sends data or indication information to the second terminal equipment;

and the first terminal equipment determines whether to report the RLF information according to whether the second terminal equipment sends feedback information aiming at the data or the indication information.

2. The method of claim 1, wherein the determining, by the first terminal device, whether to report Radio Link Failure (RLF) information according to whether the second terminal device sends feedback information for the data or the indication information comprises:

the second terminal equipment does not send feedback information aiming at the data or the indication information;

the first terminal equipment updates a non-feedback counter;

if the first terminal equipment determines that the value of the updated non-feedback counter is equal to the out-of-synchronization OOS threshold value, reporting OOS information and updating an OOS reporting counter;

and the first terminal equipment determines whether to report the RLF information according to the updated value of the OOS reporting counter.

3. The method of claim 2, wherein the determining, by the first terminal device, whether to report the RLF information according to the updated value of the OOS reporting counter comprises:

and if the first terminal equipment determines that the value of the updated OOS reporting counter is equal to the first RLF reporting threshold, reporting the RLF information.

4. The method of claim 2, wherein the determining, by the first terminal device, whether to report the RLF information according to the updated value of the OOS reporting counter comprises:

if the first terminal device determines that the value of the updated OOS reporting counter IS equal to an RLF decision threshold, acquiring the total number of times that the first terminal device reports the IS information in a target time period, wherein the target time period IS determined by a first time when the OOS reporting counter IS reset for the last time and a second time when the value of the updated OOS reporting counter IS equal to the RLF decision threshold;

and if the first terminal equipment determines that the total times of the IS information IS equal to a second RLF reporting threshold, reporting the RLF information.

5. The method of claim 1, wherein the determining, by the first terminal device, whether to report Radio Link Failure (RLF) information according to whether the second terminal device sends feedback information for the data or the indication information comprises:

the second terminal equipment sends feedback information aiming at the data or the indication information;

the first terminal equipment updates a feedback counter;

if the first terminal equipment determines that the updated value of the counter with feedback IS equal to the synchronous IS reporting threshold, reporting IS information and updating an IS reporting counter;

if the first terminal equipment determines that the updated value of the IS reporting counter IS equal to the zero clearing threshold of the OOS reporting counter, the OOS reporting counter IS reset and the RLF information IS not reported.

6. The method according to any of claims 1-5, wherein the data is sidestream data and the feedback information is Acknowledgement (ACK) information or Negative Acknowledgement (NACK) information.

7. The method according to any of claims 1-5, wherein the indication information is CSI measurement reporting indication information, and the feedback information is a CSI measurement report.

8. A communication apparatus, the communication apparatus being a first terminal device, the communication apparatus comprising:

the receiving and sending unit is used for sending data or indication information to the second terminal equipment;

and the processing unit is used for determining whether to report the Radio Link Failure (RLF) information according to whether the second terminal equipment sends feedback information aiming at the data or the indication information.

9. The communications apparatus as claimed in claim 8, wherein the processing unit is further configured to:

if the second terminal device is determined not to send feedback information aiming at the data or the indication information, updating a non-feedback counter;

if the value of the updated non-feedback counter is determined to be equal to the out-of-synchronization OOS threshold value, reporting OOS information;

updating an OOS reporting counter; and the number of the first and second groups,

and determining whether to report the RLF information according to the updated value of the OOS reporting counter.

10. The communications apparatus of claim 9, wherein the processing unit is further configured to:

and if the value of the updated OOS reporting counter is determined to be equal to the first RLF reporting threshold, reporting the RLF information.

11. The communications apparatus of claim 9, wherein the processing unit is further configured to:

when the value of the updated OOS reporting counter IS determined to be equal to an RLF judgment threshold value, acquiring the total number of times of reporting the IS information in a target time interval, wherein the target time interval IS determined by a first time when the OOS reporting counter IS reset for the last time and a second time when the value of the updated OOS reporting counter IS equal to the RLF judgment threshold value;

and if the total times of the IS information IS determined to be equal to a second RLF reporting threshold, reporting the RLF information.

12. The communications apparatus of claim 8, wherein the processing unit is further configured to:

if the second terminal device is determined to send feedback information aiming at the data or the indication information, a feedback counter is updated;

if the updated value of the counter with the feedback IS determined to be equal to the synchronous IS reporting threshold value, reporting IS information;

updating an IS reporting counter; and the number of the first and second groups,

if the updated value of the IS reporting counter IS equal to the zero clearing threshold value of the OOS reporting counter, the OOS reporting counter IS reset, and the RLF information IS not reported.

13. The communications device according to any of claims 8-12, wherein the data is sidestream data and the feedback information is acknowledgement, ACK, information or negative acknowledgement, NACK, information.

14. The communications apparatus as claimed in any one of claims 8 to 12, wherein the indication information is CSI measurement report indication information, and the feedback information is a CSI measurement report.

15. A readable storage medium storing instructions that, when executed, cause the method of any of claims 1-7 to be implemented.

16. A communications apparatus, comprising: a processor, a memory, and a transceiver;

the memory for storing a computer program;

the processor configured to execute a computer program stored in the memory to cause the communication device to perform the method of any one of claims 1-7.

17. A communications apparatus, comprising: a processor and an interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor is configured to execute the code instructions to perform the method of any one of claims 1-7.