WO2021056521A1 - 链路状态的处理方法和装置 - Google Patents
链路状态的处理方法和装置 Download PDFInfo
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- WO2021056521A1 WO2021056521A1 PCT/CN2019/108943 CN2019108943W WO2021056521A1 WO 2021056521 A1 WO2021056521 A1 WO 2021056521A1 CN 2019108943 W CN2019108943 W CN 2019108943W WO 2021056521 A1 WO2021056521 A1 WO 2021056521A1
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- terminal device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Definitions
- This application relates to the field of communication technology, and in particular to a method and device for processing link status.
- RLM radio link monitoring
- the terminal equipment at the receiving end needs to perform RLM, but it is also necessary for the terminal equipment at the transmitting end to perform the RLM process, because the terminal equipment at the transmitting end can obtain the channel status faster in real time, for example: when the terminal equipment at the transmitting end monitors When the link is out of synchronization, the data transmission will be stopped, which can reduce the waste of air interface resources.
- the embodiments of the present application provide a method and device for processing link status, which can improve communication performance.
- an embodiment of the present application provides a method for processing a link state, including:
- the second information is received from the second terminal device, and the second information is used to indicate the link status monitored by the second terminal device.
- the second terminal device will feed back the monitored link status to the first terminal device, so that the first terminal device will learn about the second terminal
- the link status monitored by the device is to avoid the inconsistency between the link status monitored by the first terminal device and the link status monitored by the second terminal device, so that according to the link status monitored by the first terminal device and the link status monitored by the second terminal device Link status, determine whether to continue sending data or stop sending data, which can improve communication performance.
- sending the first information to the second terminal device includes:
- the preset conditions include at least one of the following:
- the first terminal device detects that the link state is out of synchronization or early out of synchronization
- the first terminal device does not send data or reference signals to the second terminal device within the first preset time period; or,
- the first terminal device does not monitor the link status in the second preset time period.
- the first information is sent to the second terminal device to exchange information through the physical layer to query the link monitored by the second terminal device Status, so as to achieve the goal of the link status monitored by the first terminal device and the second terminal device being consistent, so that the communication performance can be improved.
- the first terminal device when the first terminal device does not send data to the second terminal device within the first preset time period, it will send the first information to the second terminal device to instruct the second terminal device to report the link status, so as to avoid 2.
- the terminal equipment does not receive any data, which leads to inaccurate monitoring results, thereby improving the reliability of link monitoring.
- the link status is determined by querying the link status monitored by the second terminal device, thereby avoiding the waste of air interface resources.
- the method before sending the first information to the second terminal device, the method further includes:
- the first terminal device sends third information to the second terminal device to instruct the second terminal device to clear the previously recorded link state to ensure that the previous recorded information does not affect the new RLM process, thereby improving The accuracy of RLM.
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC in.
- the first information or the third information is carried in at least one of SCI, CSI, MAC CE, or RRC and sent to the second terminal device, so that the sending mode of the first information is more flexible.
- the second information is carried in the HARQ and/or CSI feedback information of the hybrid automatic repeat request.
- the second information is carried in HARQ and/or CSI feedback information and sent to the first terminal device, so that the sending mode of the second information is more flexible.
- sending the first information to the second terminal device includes:
- the first terminal device sends the first information to the network device, and the network device forwards the first information to the second terminal device, thereby ensuring the success rate of sending the first information.
- receiving the second information from the second terminal device includes:
- the second information is received from the network device, and the second information is sent by the second terminal device to the network device.
- the second terminal device sends the second information to the network device, and the network device forwards the second information to the first terminal device, thereby ensuring the success rate of sending the second information.
- the method further includes:
- the status of sending data to the second terminal device is determined, and the status of sending data includes continuing sending or stopping sending.
- the first terminal device can determine whether to continue sending data to the second terminal device or stop sending data to the second terminal device based on the second information fed back by the second terminal device.
- the inconsistency with the second terminal device on the link out-of-synchronization judgment result can not only reduce the waste of air interface resources, but also improve the communication performance.
- an embodiment of the present application provides a method for processing a link state, which is applied to a second terminal device, and the method includes:
- the link state includes a synchronization state, an early synchronization state, an out-of-synchronization state, or an early out-of-synchronization state;
- the second terminal device will feed back the monitored link status to the first terminal device, so that the first terminal device will learn about the second terminal
- the link status monitored by the device is to avoid the inconsistency between the link status monitored by the first terminal device and the link status monitored by the second terminal device, so that according to the link status monitored by the first terminal device and the link status monitored by the second terminal device Link status, determine whether to continue sending data or stop sending data, which can improve communication performance.
- the first information is sent by the first terminal device when a preset condition is met;
- the preset conditions include at least one of the following:
- the first terminal device detects that the link state is out of synchronization
- the first terminal device does not send data to the second terminal device within the first preset time period; or,
- the first terminal device does not monitor the link status in the second preset time period.
- the first information is sent to the second terminal device to exchange information through the physical layer to query the link monitored by the second terminal device Status, so as to achieve the goal of the link status monitored by the first terminal device and the second terminal device being consistent, so that the communication performance can be improved.
- the first terminal device when the first terminal device does not send data to the second terminal device within the first preset time period, it will send the first information to the second terminal device to instruct the second terminal device to report the link status, so as to avoid 2.
- the terminal equipment does not receive any data, which leads to inaccurate monitoring results, thereby improving the reliability of link monitoring.
- the link status is determined by querying the link status monitored by the second terminal device, thereby avoiding the waste of air interface resources.
- the method further includes:
- the previously recorded link status is cleared according to the third information.
- the first terminal device sends the third information to the second terminal device, and the second terminal device clears the previously recorded link state according to the third information to ensure that the previous recorded information does not affect the new RLM process, thereby Can improve the accuracy of RLM.
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC in.
- the first information or the third information is carried in at least one of SCI, CSI, MAC CE, or RRC and sent to the second terminal device, so that the sending mode of the first information is more flexible.
- the second information is carried in the HARQ and/or CSI feedback information of the hybrid automatic repeat request.
- the second information is carried in HARQ and/or CSI feedback information and sent to the first terminal device, so that the sending mode of the second information is more flexible.
- receiving the first information from the first terminal device includes:
- the first information is received from the network device, and the first information is sent by the first terminal device to the network device.
- the first terminal device sends the first information to the network device, and the network device forwards the first information to the second terminal device, thereby ensuring the success rate of sending the first information.
- sending the second information to the first terminal device includes:
- the second information is sent to the network device, so that the network device sends the second information to the first terminal device.
- the second terminal device sends the second information to the network device, and the network device forwards the second information to the first terminal device, thereby ensuring the success rate of sending the second information.
- an embodiment of the present application provides a link state processing device, including:
- the sending unit is configured to send the first information to the second terminal device, the first information is used to instruct the second terminal device to feed back the link state, and the link state includes a synchronization state, an early synchronization state, an out-of-synchronization state or an early out-of-synchronization state;
- the receiving unit is configured to receive second information from the second terminal device, and the second information is used to indicate the link status monitored by the second terminal device.
- the sending unit is specifically used for:
- the preset conditions include at least one of the following:
- the first terminal device detects that the link state is out of synchronization or early out of synchronization
- the first terminal device does not send data or reference signals to the second terminal device within the first preset time period; or,
- the first terminal device does not monitor the link status in the second preset time period.
- the sending unit is also used for:
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC in.
- the second information is carried in the HARQ and/or CSI feedback information of the hybrid automatic repeat request.
- the sending unit is specifically used for:
- the receiving unit is specifically used for:
- the second information is received from the network device, and the second information is sent by the second terminal device to the network device.
- the device further includes: a processing unit;
- the processing unit is configured to determine the status of sending data to the second terminal device according to the second information, and the status of sending data includes continuing sending or stopping sending.
- an embodiment of the present application provides a link state processing device, including:
- the receiving unit is configured to receive first information from the first terminal device, the first information is used to indicate the link state processing device to feed back the link state, and the link state includes a synchronization state, an early synchronization state, an out-of-synchronization state, or an early out-of-sync state status;
- the sending unit is configured to send second information to the first terminal device, and the second information is used to indicate the link state monitored by the processing device of the link state.
- the first information is sent by the first terminal device when a preset condition is met;
- the preset conditions include at least one of the following:
- the first terminal device detects that the link state is out of synchronization
- the first terminal device does not send data to the link state processing device within the first preset time period; or,
- the first terminal device does not monitor the link status in the second preset time period.
- the device further includes: a processing unit;
- the receiving unit is further configured to receive third information from the first terminal device
- the processing unit is configured to clear the previously recorded link state according to the third information.
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC in.
- the second information is carried in the HARQ and/or CSI feedback information of the hybrid automatic repeat request.
- the receiving unit is specifically used for:
- the first information is received from the network device, and the first information is sent by the first terminal device to the network device.
- the sending unit is specifically used for:
- the second information is sent to the network device, so that the network device sends the second information to the first terminal device.
- the device provided in the third aspect-the fourth aspect of the present application may be a terminal device or a chip in a terminal device, and the terminal device or the chip has a link to implement the above aspects or any possible design.
- the function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more units corresponding to the above-mentioned functions.
- the terminal device includes a processing unit and a transceiving unit, the processing unit may be a processor, the transceiving unit may be a transceiver, the transceiver includes a radio frequency circuit, and optionally, the terminal device further includes a storage unit
- the storage unit may be a memory, for example.
- the terminal device includes a storage unit, the storage unit is used to store computer-executed instructions, the processing unit is connected to the storage unit, and the processing unit executes the computer-executed instructions stored in the storage unit to enable all
- the terminal device executes the link state processing method in the above-mentioned aspects or any possible design thereof.
- the chip includes: a processing unit and a transceiving unit, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, or a circuit on the chip.
- the processing unit can execute computer-executable instructions stored in the storage unit, so that the chip executes the link state processing methods in the above aspects or any possible designs thereof.
- the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), and the storage unit may also be a storage unit in the terminal device located outside the chip (for example, Read-only memory (ROM) or other types of static storage devices (for example, random access memory (RAM)) that can store static information and instructions.
- ROM Read-only memory
- RAM random access memory
- the aforementioned processor may be a central processing unit (CPU), a microprocessor or an application specific integrated circuit (ASIC), or one or more for controlling the above aspects or Its any possible design of the integrated circuit for program execution of the link state processing method.
- CPU central processing unit
- ASIC application specific integrated circuit
- the fifth aspect of the embodiments of the present application provides a computer-readable storage medium for storing computer instructions, which when run on a computer, cause the computer to execute any aspect of the first aspect to the second aspect of the embodiments of the present application Provides the processing method of the link status.
- the sixth aspect of the embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the link state provided by any aspect of the first aspect to the second aspect of the embodiments of the present application ⁇ Treatment methods.
- the seventh aspect of the embodiments of the present application provides a link state processing device, including: a memory, a processor, and a computer program; wherein the computer program is stored in the memory and is configured to be used by the Executed by a processor, the computer program includes instructions for executing the method according to any one of the first aspect to the second aspect.
- a first terminal device sends first information to a second terminal device, and the first information is used to instruct the second terminal device to feed back the link status, and the link status includes synchronization status , Early synchronization state, out-of-synchronization state or early out-of-synchronization state, and receiving second information from the second terminal device.
- the second information is used to indicate the link state monitored by the second terminal device.
- the first terminal device sends the first information to the second terminal
- the second terminal device will feed back the monitored link status to the first terminal device. In this way, the first terminal device will learn the link monitored by the second terminal device. Status, so as to determine whether to continue sending data or stop sending data according to the link status monitored by the first terminal device and the link status monitored by the second terminal device, thereby improving communication performance.
- FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
- Figure 2 is a signaling interaction diagram of the method for processing the link state of this application
- FIG. 3 is a schematic structural diagram of a link state processing apparatus provided by an embodiment of this application.
- FIG. 4 is a schematic structural diagram of another link state processing apparatus provided by an embodiment of this application.
- FIG. 5 is a schematic structural diagram of yet another link state processing apparatus provided by an embodiment of this application.
- FIG. 6 is a schematic structural diagram of still another link state processing apparatus provided by an embodiment of this application.
- FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
- the unit in this application refers to a functional unit or a logical unit. It can be in the form of software, and its function is realized by the processor executing the program code; it can also be in the form of hardware.
- the first terminal device may be a device with sending capability
- the second terminal device may be a device with receiving capability
- FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
- the communication system may include at least one network device 10 and at least one terminal device located within the coverage area of the network device 10.
- the terminal device can be a fixed location, or it can be movable.
- Fig. 1 is only a schematic diagram.
- the communication system may also include other devices, such as a core network device (not shown in Fig. 1), and the network device is connected to the core network device in a wireless or wired manner.
- the core network equipment and the network equipment can be separate and different physical equipment.
- the functions of the core network equipment and the logical functions of the network equipment can also be integrated on the same physical equipment, or part of the core network equipment can be integrated on the same physical equipment.
- the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in FIG. 1.
- the embodiment of the present application does not limit the number of core network equipment, network equipment, and terminal equipment included in the communication system.
- the terminal device 14 to the terminal device 16 can form a device-to-device communication system.
- the terminal device 15 acts as a sender and can send a message to the terminal device 14.
- the terminal device 14 and the terminal device 16 can send data to the terminal device 15 separately or at the same time.
- the network device 10 may send downlink information to one or a few of the terminal devices 11 to 16.
- the terminal device 11 to the terminal device 15 that can directly communicate with the network device 10 may also send uplink information to the network device 10 separately or at the same time.
- a network device is an entity used to transmit or receive signals on the network side, such as a generation NodeB (gNodeB).
- the network device may be a device used to communicate with mobile devices.
- Network equipment can be APs in wireless local area networks (WLAN), base transceivers in global system for mobile communications (GSM) or code division multiple access (CDMA).
- WLAN wireless local area networks
- GSM global system for mobile communications
- CDMA code division multiple access
- BTS BTS
- BTS BTS
- BTS base station
- NodeB, NB base station
- WCDMA Wideband Code Division Multiple Access
- evolutional Long Term Evolution
- LTE Long Term Evolution
- Node B, eNB or eNodeB Node B, eNB or eNodeB
- relay station or access point or in-vehicle equipment, wearable equipment, and network equipment in the future 5G network or the network in the future evolved public land mobile network (PLMN) network Equipment, or gNodeB in the NR system, etc.
- PLMN public land mobile network
- the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
- the cell may be a network equipment.
- the corresponding cell can belong to a macro base station or a base station corresponding to a small cell.
- the small cell here can include: metro cell, micro cell, and pico cell (pico cell), femto cell (femto cell), etc., these small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
- the network device may be another device that provides wireless communication functions for the terminal device.
- the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device. For ease of description, in the embodiments of the present application, a device that provides a wireless communication function for a terminal device is referred to as a network device.
- the terminal device may be a wireless terminal device that can receive network device scheduling and instruction information
- the wireless terminal device may be a device that provides voice and/or data connectivity to the user, or a handheld device with wireless connection function, or connects to Other processing equipment for wireless modems.
- a wireless terminal device can communicate with one or more core networks or the Internet via a wireless access network (e.g., radio access network, RAN).
- the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone).
- Mobile phones Mobile phones
- computers, and data cards for example, may be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, and they exchange language and/or data with the wireless access network.
- Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station (remote station), access point ( access point (AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
- the wireless terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G network or a terminal device in a future evolved PLMN network, a terminal device in a new radio (NR) communication system, and so on.
- a next-generation communication system for example, a terminal device in a 5G network or a terminal device in a future evolved PLMN network, a terminal device in a new radio (NR) communication system, and so on.
- NR new radio
- the aforementioned communication system may be an LTE system, an LTE Advanced (LTE-A) system, or a 5G NR system.
- the embodiments of the present application can also be applied to other communication systems, as long as there is an entity in the communication system that can send first information to another entity, and the first information is used to instruct another entity to feed back the link status. It includes a synchronization state, an early synchronization state, an out-of-synchronization state, or an early out-of-synchronization state, and receives second information from another entity, and the second information is used to indicate the link state monitored by the other entity.
- another entity can send second information to the above-mentioned entity according to the first information, so as to report the link state monitored by the other entity to the above-mentioned entity.
- Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
- the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
- the solution of the embodiment of the present application is applied to the application scenario of performing RLM on the communication link (sidelink) between the device and the device in the V2X communication process.
- the terminal device at the receiving end when performing RLM on the sidelink between the device and the device, not only the terminal device at the receiving end needs to perform RLM, but it is also necessary for the terminal device at the transmitting end to perform the RLM process, because the terminal device at the transmitting end
- the channel status can be obtained faster in real time. For example, when the terminal device at the transmitting end detects that the link is out of synchronization, it will stop sending data, which can reduce the waste of air interface resources.
- the judgment results of both ends may be inconsistent, for example: the terminal at the transmitting end
- the device judges that the link is out of synchronization, but the terminal device at the receiving end judges that the link is synchronized.
- the terminal device at the sending end has a false alarm, that is, from the terminal device at the receiving end, the data reception is normal, and it is hoped that the terminal at the sending end
- the device continues to send data, but the terminal device at the sending end determines that the link is out of synchronization and will stop sending data, which will reduce the communication performance.
- the terminal device at the receiving end judges that the link is out of synchronization, but the terminal device at the sending end judges that the link is synchronized, the occurrence of this situation belongs to the missed alarm of the terminal device at the sending end, that is, from the perspective of the terminal device at the receiving end, the data reception is abnormal , It belongs to the link out of synchronization, and it is hoped that the terminal device at the sending end will stop sending data, or find a more suitable channel to transmit data.
- the terminal device at the transmitting end can stop sending data only after the terminal device at the receiving end reports that the link is out of sync, which wastes air interface resources and also reduces communication performance. Therefore, how to improve communication performance when both the terminal device at the sending end and the terminal device at the receiving end perform RLM is a technical problem that needs to be solved in the embodiments of the present application.
- the first terminal device sends first information to the second terminal device, and the first information is used to instruct the second terminal device to feed back the link status.
- the link state includes a synchronization state, an early synchronization state, an out-of-synchronization state, or an early out-of-synchronization state
- the second information is received from the second terminal device, and the second information is used to indicate the link state monitored by the second terminal device .
- the first terminal device sends the first information to the second terminal
- the second terminal device will feed back the monitored link status to the first terminal device. In this way, the first terminal device will learn the link monitored by the second terminal device. Status, so as to determine whether to continue sending data or stop sending data according to the link status monitored by the first terminal device and the link status monitored by the second terminal device, thereby improving communication performance.
- the RLM process is used to determine whether the link fails. If the determination fails, the wireless link is considered to be of poor quality and cannot be used, and the terminal device is required to establish a wireless link. If there is no determination If the link fails, or if it is judged that the link has not failed, it is considered that the link quality can guarantee the communication, and there is no need to re-establish the wireless link.
- Link out-of-synchronization means that the link quality is poor and has reached or is close to the level of link failure, that is, link out-of-synchronization can be equivalent to Link failure can also be larger than the definition of link failure.
- the link synchronization means that the link quality can guarantee the quality of communication, that is, no new maintenance operation of the link is required, which can be equivalent to the link not failing, or it may be wider than the definition of the link not failing.
- the link synchronization state and the link early synchronization state described in this application are a description of detecting the link synchronization state.
- Figure 2 is a signaling interaction diagram of the method for processing the link state of this application.
- the first terminal device is the terminal device of the sending end
- the second terminal device is the terminal device of the receiving end
- the information exchange between the first terminal device and the second terminal device is taken as an example for description.
- the method for processing the link state may include the following steps:
- Step 201 The first terminal device sends first information to the second terminal device, where the first information is used to instruct the second terminal device to feed back the link status.
- both the first terminal device and the second terminal device will perform RLM.
- the network equipment when performing RLM, for a serving cell, the network equipment will equip the terminal equipment with a set of reference signal resources for RLM, which is called a radio link monitor reference signal (Radio link monitor reference signal). , RLM-RS).
- the terminal device uses the RLM-RS to estimate the block error rate (BLER) of the physical downlink control channel (Physical downlink control channel, PDCCH) of the serving cell. If the BLER estimated by the terminal device for each RLM-RS within a preset time length T is higher than the preset threshold q out (for example, higher than 10%), the terminal device will send out-of-synchronization (out-of-synchronization) to the higher layer.
- BLER block error rate
- the terminal device estimates the BLER result for another RLM-RS with a preset time length of T evaluate_in, if The result is higher than another preset threshold q in (for example: 2%), indicating that the quality of the wireless link has improved.
- the terminal device will stop the RLF timer. And send a synchronization (in-sync) indication to the upper layer, and then restart to monitor whether the BLER is higher than q out .
- first terminal device and the second terminal device may perform RLM in the foregoing manner, or may perform RLM in other manners, and the RLM manner is not limited in this embodiment of the present application.
- the first terminal device may send the first information to the second terminal device.
- the first information is used to instruct the second terminal device to feed back the monitored link status.
- the first terminal device when it sends the first information to the second terminal device, it may be sent when a preset condition is met.
- the foregoing preset conditions may include at least one of the following: the first terminal device monitors that the link status is out of synchronization, the first terminal device does not send data to the second terminal device within the first preset time period, or , The first terminal device does not monitor the link status within the second preset time period.
- the first terminal device monitors that the link state is out of synchronization, it does not directly perform all actions related to link out of synchronization, such as immediately releasing the side link link or stopping sending data, etc., but to the second terminal
- the device sends the first information to wait for the second terminal device to feed back the monitored link status. If the second terminal device confirms that the link is out of synchronization, the first terminal device performs the action after the link is out of synchronization.
- the first terminal device can determine whether the link is out of synchronization in the following two ways, that is, whether the link state is out of synchronization: 1), using the automatic reconfiguration of high-level radio link control (RLC) It is determined by the Negative Acknowledgement (NACK)/Acknowledgement (ACK) feedback information in the automatic Repeat-reQuest (ARQ) process, for example: if the first terminal device continuously receives N1 NACK feedback It is determined that the link is out of synchronization, where N1 can be 3 or 4, for example.
- RLC radio link control
- NACK Negative Acknowledgement
- ARQ automatic Repeat-reQuest
- the second threshold can also be set, if the rate of the first terminal device currently receiving NACK exceeds the preset second threshold Value, it is determined that the link is out of synchronization early, where the second threshold value is less than the first threshold value.
- the first terminal device when the first terminal device detects that the link status is out of synchronization, the first information is sent to the second terminal device to exchange information through the physical layer to query the link monitored by the second terminal device. Therefore, the link status monitored by the first terminal device and the second terminal device are consistent, and the communication performance can be improved.
- the first terminal device when it does not send data to the second terminal device within the first preset time period, it will send the first information to the second terminal device.
- the second terminal device executes the RLM process and relies on the first terminal device to send data, there may be cases in which the first terminal device does not send data for a long time, causing the second terminal device to make a misjudgment. For example: if the first terminal device does not send any data to the second terminal device in 100ms, the second terminal device will not be able to identify whether it is because the first terminal device did not send data or because the link quality is poor and the data cannot be received. At this time, the first terminal device sends the first information to the second terminal device, so that the second terminal device feeds back the monitored link state.
- the first terminal device when the first terminal device does not send data to the second terminal device within the first preset time period, it will send the first information to the second terminal device to instruct the second terminal device to report the link status. In order to avoid the phenomenon of inaccurate monitoring results caused by the second terminal device not receiving any data, the reliability of link monitoring can be improved.
- the first terminal device when the first terminal device does not monitor the link status within the second preset time period, it will send the first information to the second terminal device. Specifically, when the first terminal device does not monitor the link status within the second preset time period, that is, when it cannot perceive the quality of the link, it can actively query the link monitoring status of the second terminal device.
- the situation where the first terminal device fails to perform link monitoring includes the following situations: (1) At the RLC layer, when the data transmission is in the unacknowledged mode, the second terminal device will not perform ACK/NACK feedback on the received data. Therefore, the first terminal device cannot use the ARQ feedback information of the RLC for link monitoring.
- the HARQ-ACK feedback is disabled, so that the second terminal device will not feed back the HARQ-ACK, and the first terminal device cannot use the HARQ-ACK to perform link monitoring.
- the capability limitation of the first terminal device for example, when the first terminal device performs RLM monitoring, its monitoring capability is limited. For example, a first terminal device can only monitor 8 side links at most, or Monitor 8 reference signals for RLM. When the side link that needs to be detected exceeds the monitoring capability of the first terminal device, the first terminal device will stop the monitoring of some link status.
- the link status is determined by querying the link status monitored by the second terminal device, thereby avoiding the waste of air interface resources.
- the first terminal device may send the first information to the second terminal device when any one of the foregoing preset conditions is satisfied, or it may send the first information to the second terminal device when the foregoing at least two preset conditions are satisfied. Send the first message.
- the first terminal device did not send data to the second terminal device within the first preset time period.
- the first terminal device may also send data to the second terminal device before sending the first information to the second terminal device.
- the device sends third information, which is used to instruct the second terminal device to clear the previously recorded link state, where the link state includes: a synchronization counter, an out-of-synchronization counter, or a synchronization recovery timer, etc.
- the third information may be an RLM reset or restart command, where reset or restart means that the second terminal device needs to reset RLM related process parameters, that is, to clear the previously recorded information to ensure that the previous recorded information is not Affect the new RLM process.
- the first terminal device After the second terminal device clears the previously recorded link state according to the third information, after a preset period of time, if the aforementioned preset condition is met, the first terminal device will continue to send the first information to the second terminal device, To instruct the second terminal device to feed back the link status.
- the first terminal device sends the third information to the second terminal device to instruct the second terminal device to clear the previously recorded link state, so as to ensure that the previous recorded information does not affect the new RLM process. Improve the accuracy of RLM.
- first information may be carried in side link control information (SCI), channel state indication information (CSI), media access control (MAC) control unit At least one type of information in (control element, CE) or radio resource control (Radio Resource Control, RRC).
- SCI side link control information
- CSI channel state indication information
- MAC media access control
- CE control element
- RRC Radio Resource Control
- the first information is carried in the SCI sent through the physical side link control channel (PSCCH), it may be a new one in the SCI.
- nbit field or cell to represent the first information. For example: if n is 1, when the value of the newly added field is 1, it means that the second terminal device needs to feed back its monitored link status to the first terminal device; if the value of the newly added field is 0, it means The second terminal device does not need to feed back the monitored link status to the first terminal device. Of course, when the value of the newly added field is 1, it means that the second terminal device does not need to feed back the monitored link status to the first terminal device. If the value of the newly added field is 0, it means that the second terminal device does not need to feed back the monitored link status to the first terminal device. The second terminal device needs to feed back the monitored link status to the first terminal device.
- the format of the SCI may be as shown in Table 1 below:
- the link state request is the first information in the foregoing embodiments.
- the existing fields or cells in the SCI can also be used to represent the first information.
- N bits are usually used to represent data scheduling frequency domain allocation information.
- one or more N bits of combined information may be reserved to represent the first information. For example, reserving all 1 bits means that the monitored link status needs to be fed back to the first terminal device.
- the format of the SCI may be as shown in Table 2 below:
- the frequency domain scheduling information can be considered invalid, and only the second terminal device is instructed to feed back the RLM link status without data scheduling. It can also be considered as frequency domain scheduling information. Is valid, corresponds to a kind of pre-configured frequency domain scheduling information, and instructs the second terminal device to feed back the RLM link state, and there is data scheduling at this time.
- the first information can also be carried in the CSI.
- a 1-bit field or a multi-bit field may be added to indicate the first information, so as to indicate the second terminal device to feed back the monitored link status.
- the format of the CSI may be as shown in Table 3 below:
- the link status request in Table 3 can be used to indicate the first information to indicate the second terminal device to feed back the monitored link status. For example, if the value of the link status request RLM-status is 1, it means the second The terminal device needs to feed back the link status. If the value of the link status request RLM-status is 0, it means that the second terminal device does not need to feed back the link status.
- the first terminal device when the first terminal device sends the third information to the second terminal device, the first information and the third information may also be carried in high-layer signaling for transmission, for example, may be carried in MAC CE and sent.
- the format of MAC CE may be as shown in Table 4 below:
- the inquire type in Table 4 aims to indicate the condition under which the second terminal device feeds back the link monitoring situation. For example, when the sidelink link feedback resource is insufficient, 0 is indicated, that is, feedback is performed when the link is synchronized, and no feedback is performed if the link is out of synchronization. If the feedback resources of the sidelink link are sufficient, the indication is 1, that is, regardless of whether the link is out of synchronization or synchronized, the actual monitored status information is fed back. For the timer setting in Table 4, when the link quality is relatively poor, the terminal device may not receive data, or the first terminal device does not detect the feedback information during the feedback, and the first terminal device will consider the link to be out of sync. Or resend the first message again.
- RX-slots in Table 4 It is recommended that the second terminal equipment feedback the link state to use time resources, which can indicate the subframe/slot symbols.
- the first terminal equipment adopts the receiving mode to avoid double Work problems (that is, in these time slots, the first terminal device does not send any information, and the method of receiving is adopted to avoid the first terminal device sending data and failing to receive the feedback information).
- the time slot can be indicated by a bitmap bitmap, for example, 10bit MAP:0000100001, which means that the second terminal device is expected to feed back the link status in the 5th time slot and the 10th time slot.
- the second terminal device can only reset the link monitoring results in the corresponding time period, without clearing all the monitoring results. For example, when the timer timer is 100 ms, the second terminal device may only reset the monitoring result in the 100 ms time period.
- the second terminal device When the second terminal device receives the above-mentioned MAC CE sent by the first terminal device, it can learn that it needs to feed back the monitored link state to the first terminal device, and will feedback the link state according to the acquisition type and RX-slots.
- the first information may also be carried in the RRC for transmission.
- the format of RRC may be as shown in Table 5 below:
- the cell ID in Table 5 above represents the cell identification number where the opposite terminal device (such as the second terminal device) is located, and related information can be acquired when the first terminal device and the second terminal device establish a sidelink connection.
- the terminal device ID in Table 5 above represents the identification number of the opposite terminal device (such as the second terminal device), which can be the Cell Radio Network Temporary Identifier (C-RNTI), or other IDs allocated by higher layers
- C-RNTI Cell Radio Network Temporary Identifier
- the related information can be obtained when the first terminal device and the second terminal device establish a sidelink connection.
- the second terminal device When the second terminal device receives the above-mentioned RRC sent by the first terminal device, it can learn that the monitored link state needs to be fed back to the first terminal device.
- the first information is carried in at least one of SCI, CSI, MAC CE, or RRC, and sent to the second terminal device, so that the sending mode of the first information is more flexible.
- the above-mentioned third information can also be carried in at least one of SCI, CSI, MAC CE, or RRC and sent to the second terminal device.
- the specific carrying method is similar to that of the first information. For details, please refer to the above description, which will not be repeated here.
- the first terminal device sends the first information to the second terminal device, and the transmission link may be a sidelink, or it may be forwarded through the network device, that is, the first terminal device may send the first information to the network device.
- the network device then forwards the above-mentioned first information to the second terminal device.
- the first information when the first information is forwarded through a network device, the first information is usually carried in an RRC message as shown in Table 5 for transmission. Specifically, if the first terminal device and the second terminal device are in the coverage area of the same network device, the network device is required to forward the first information. For example: if the first terminal device and the second terminal device are both in the coverage area of the network device 1, the first terminal device can send the first information to the network device 1, and the network device 1 will, according to the terminal device ID in the first information, The first information is sent to the second terminal device corresponding to the terminal device ID.
- first terminal device and the second terminal device are in the coverage areas of different network devices, forwarding between network devices is also required. For example: if the first terminal device is in the coverage area of network device 1, and the second terminal device is in the coverage area of network device 2, then the first terminal device sends the first information to network device 1, and network device 1
- the CELL ID forwards the first information to the network device 2, and the network device 2 sends the first information to the second terminal device corresponding to the terminal device ID according to the terminal device ID.
- the first terminal device sends the first information to the network device, and the network device forwards the first information to the second terminal device, thereby ensuring the success rate of sending the first information.
- Step 202 The second terminal device sends second information to the first terminal device, where the second information is used to indicate the link status monitored by the second terminal device.
- the second terminal device will return the second information to the first terminal device to feed back to the first terminal device the chain monitored by the second terminal device. Road status.
- the second terminal device can synchronize the link state monitored by it to the first terminal device, so that the link state monitored by the first terminal device and the second terminal device can be consistent, avoiding the first terminal device to determine the link status.
- the second terminal device judges that the link is synchronized, causing the first terminal device to stop sending data, resulting in lower communication performance.
- it can also prevent the second terminal device from judging that the link is out of synchronization, but the first terminal device The device judges that the link is synchronized, and the first terminal device continues to send data, causing a waste of air interface resources.
- the second terminal device when the second terminal device feeds back the monitored link status to the first terminal device through the second information, it can be represented by 1 bit or multi-bit.
- only one link status can be fed back, such as Feedback is only when the link is out of synchronization, or only when the link is synchronized. It can also feed back two states, such as when the link is out of synchronization or when the link is synchronized, or it can also feed back multiple states, such as link Out of synchronization, link synchronization, early link out of synchronization, early link synchronization, etc.
- the second information may be carried in HARQ and/or CSI feedback information, that is, the second terminal device may send the first terminal device to the first terminal device through HARQ and/or CSI feedback information. Two information.
- the second terminal device when the first information is received, it will feedback the link status, that is, return the second information to the first terminal device.
- the second information can use a separate cell or Occupy the HARQ-ACK feedback position, that is, the HARQ-ACK information of this scheduling data is no longer fed back, but the link status is fed back, such as: 1 means link out of synchronization, 0 means link synchronization.
- a field may be added to HARQ-ACK based on the content shown in Table 6 to feed back the information monitored by the second terminal device.
- Link status where the format of HARQ-ACK can be as shown in Table 7:
- the value of the newly added field is "0”, it may indicate that the link is out of synchronization, and if the value of the newly added field is "1", it indicates that the link is synchronized.
- the second information may also occupy the HARQ-ACK feedback position, that is, the link status monitored by the second terminal device is fed back through the fields in Table 6.
- the format of HARQ-ACK may be as shown in Table 8:
- the second information may also be carried in the feedback information of the CSI and sent to the first terminal device, that is, in the feedback resource of the scheduled CSI, the link state is fed back.
- a new field or cell can be added to the CSI feedback information to represent the second information, or the original field or cell can be occupied to represent the second information.
- the specific representation method is similar to HARQ. You can refer to the aforementioned The description manner, the specific manner of expressing the second information through the CSI feedback information, will not be repeated here.
- the second information is carried in the HARQ and/or CSI feedback information and sent to the first terminal device, so that the sending mode of the second information is more flexible.
- the transmission link can be a sidelink, or it can be forwarded through the network device, that is, the second terminal device can send the second information to the network device.
- the network device then forwards the above-mentioned second information to the first terminal device. It is worth noting that if the second terminal device cannot obtain the side link air interface resource within a preset time period (for example, within 50 ms), the second information needs to be forwarded through the network device.
- the second terminal device sends the second information to the network device, and the network device forwards the second information to the first terminal device, thereby ensuring the success rate of sending the second information.
- a timer can be set.
- the second terminal can be regarded as The link of the device is out of synchronization, that is, it is judged that the link is out of synchronization.
- the first terminal device can determine the link of the second terminal device Loss of synchronization, without waiting for feedback from the second terminal device, so as to save resources.
- the first terminal device may determine the status of sending data to the second terminal device according to the second information, where the data sending status The status includes continue sending or stop sending.
- the first terminal device will continue to send data to the second terminal device. If the second terminal device indicates through the second information that the monitored link state is an out-of-synchronization state or an early out-of-synchronization state, the first terminal device will stop sending data to the second terminal device.
- the first terminal device can determine whether to continue sending data to the second terminal device or stop sending data to the second terminal device according to the second information fed back by the second terminal device.
- the inconsistency between the device and the second terminal device on the link out-of-synchronization judgment result can not only reduce the waste of air interface resources, but also improve the communication performance.
- the first terminal device sends first information to the second terminal device, and the first information is used to instruct the second terminal device to feed back the link state, and the link state includes the synchronization state , Early synchronization state, out-of-synchronization state or early out-of-synchronization state, and receiving second information from the second terminal device.
- the second information is used to indicate the link state monitored by the second terminal device.
- the first terminal device sends the first information to the second terminal
- the second terminal device will feed back the monitored link status to the first terminal device. In this way, the first terminal device will learn the link monitored by the second terminal device. Status, so as to determine whether to continue sending data or stop sending data according to the link status monitored by the first terminal device and the link status monitored by the second terminal device, thereby improving communication performance.
- the first terminal device described in the above embodiment to stop sending data is one of the methods, and further Yes, whether it is confirmed by the second terminal device or the first terminal device or the second terminal device determines that the link is out of synchronization, the first terminal device or the second terminal device may further request the network device to increase the transmission power, or temporarily Stop the data transmission and send the null data packet carrying the reference signal.
- the second terminal device only uses the null data for link measurement and does not perform PSSCH reception, demodulation, and decoding. After the link is restored, the second terminal device does not perform PSSCH reception, demodulation, and decoding. Continue the data sending process.
- FIG. 3 is a schematic structural diagram of a link state processing apparatus provided by an embodiment of the application, where the link state processing apparatus 30 may be the first terminal device in the foregoing embodiment.
- the device includes: a sending unit 11 and a receiving unit 12, where:
- the sending unit 11 is configured to send first information to a second terminal device, where the first information is used to instruct the second terminal device to feed back a link state, and the link state includes a synchronization state, an early synchronization state, and an out-of-synchronization state. State or early out of step state;
- the receiving unit 12 is configured to receive second information from the second terminal device, where the second information is used to indicate the link status monitored by the second terminal device.
- the sending unit 11 sends first information to the second terminal device, and the first information is used to instruct the second terminal device to feed back the link status, and the link status includes synchronization status,
- the receiving unit 12 receives second information from the second terminal device, and the second information is used to indicate the link state monitored by the second terminal device.
- the second terminal device After sending the first information to the second terminal, the second terminal device will feed back the monitored link status to the link status processing device, so that the link status processing device will know the link monitored by the second terminal device Status, thereby determining whether to continue sending data or stop sending data according to the link status monitored by the link status processing device and the link status monitored by the second terminal device, thereby improving communication performance.
- the sending unit 11 is specifically configured to:
- the preset condition includes at least one of the following:
- the first terminal device monitors that the link state is an out-of-synchronization state or an early out-of-synchronization state
- the first terminal device does not send data or reference signals to the second terminal device within the first preset time period; or,
- the first terminal device does not monitor the link status within the second preset time period.
- the sending unit 11 is further configured to:
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC .
- the second information is carried in the feedback information of the HARQ and/or CSI of the hybrid automatic repeat request.
- the sending unit 11 is specifically configured to:
- the receiving unit 12 is specifically configured to:
- FIG. 4 is a schematic structural diagram of another link state processing device provided by an embodiment of the application. Based on the structure shown in FIG. 3, the device further includes: a processing unit 13;
- the processing unit 13 is configured to determine a status of sending data to the second terminal device according to the second information, and the status of sending data includes continuing sending or stopping sending.
- the link state processing device provided in the embodiment of the present application can execute the corresponding method embodiment described above, for example, it can be the embodiment shown in FIG. 2, and its implementation principles and technical effects are similar, and will not be repeated here.
- the division of the various units of the above device is only a division of logical functions, and may be fully or partially integrated into a physical entity during actual implementation, or may be physically separated.
- these units can all be implemented in the form of software invocation through processing elements; they can also be implemented in the form of hardware; part of the units can also be implemented in the form of software invocation through processing elements, and some of the units can be implemented in the form of hardware.
- the sending unit can be a separately established processing element, or it can be integrated into a certain chip of the device for implementation.
- it can also be stored in the memory of the device in the form of a program, which is called and combined by a certain processing element of the device. Perform the function of the sending unit.
- the implementation of other units is similar.
- all or part of these units can be integrated together or implemented independently.
- the processing element described here may be an integrated circuit with signal processing capabilities.
- each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
- the above sending unit is a unit that controls sending, and can send information through the sending device of the device, such as an antenna and a radio frequency device.
- the above units may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital singnal processors). , DSP), or, one or more field programmable gate arrays (FPGA), etc.
- ASIC application specific integrated circuits
- DSP digital singnal processors
- FPGA field programmable gate arrays
- the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
- CPU central processing unit
- these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
- SOC system-on-a-chip
- FIG. 5 is a schematic structural diagram of another apparatus for processing a link state according to an embodiment of the application, where the apparatus 50 for processing a link state may be the second terminal device in the foregoing embodiment.
- the device includes: a receiving unit 21 and a sending unit 22, wherein:
- the receiving unit 21 is configured to receive first information from a first terminal device, where the first information is used to indicate that the link state processing device feeds back the link state, and the link state includes a synchronization state, an early synchronization state, Out of step state or early out of step state;
- the sending unit 22 is configured to send second information to the first terminal device, where the second information is used to indicate the link state monitored by the link state processing device.
- the first information is sent by the first terminal device when a preset condition is met;
- the preset condition includes at least one of the following:
- the first terminal device monitors that the link state is an out-of-synchronization state
- the first terminal device does not send data to the processing device of the link state within the first preset time period; or,
- the first terminal device does not monitor the link status within the second preset time period.
- FIG. 6 is a schematic structural diagram of another link state processing device provided by an embodiment of the application. Based on the structure shown in FIG. 5, the device further includes: a processing unit 23;
- the receiving unit 21 is further configured to receive third information from the first terminal device
- the processing unit 23 is configured to clear the previously recorded link state according to the third information.
- the first information or the third information is carried in at least one of side link control information SCI, channel state indication information CSI, medium access control MAC control unit CE, or radio resource control RRC .
- the second information is carried in the feedback information of the HARQ and/or CSI of the hybrid automatic repeat request.
- the receiving unit 21 is specifically configured to:
- the first information is received from the network device, and the first information is sent by the first terminal device to the network device.
- the sending unit 22 is specifically configured to:
- the second information is sent to the network device, so that the network device sends the second information to the first terminal device.
- the link state processing device provided in the embodiment of the present application can execute the corresponding method embodiment described above, for example, it can be the embodiment shown in FIG. 2, and its implementation principles and technical effects are similar, and will not be repeated here.
- the division of the various units of the above device is only a division of logical functions, and may be fully or partially integrated into a physical entity during actual implementation, or may be physically separated.
- these units can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; part of the units can be implemented in the form of software called by processing elements, and some of the units can be implemented in the form of hardware.
- the sending unit can be a separately established processing element, or it can be integrated into a certain chip of the device for implementation.
- it can also be stored in the memory of the device in the form of a program, which is called and combined by a certain processing element of the device. Perform the function of the sending unit.
- the implementation of other units is similar.
- all or part of these units can be integrated together or implemented independently.
- the processing element described here may be an integrated circuit with signal processing capabilities.
- each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
- the above sending unit is a unit for controlling sending, and information can be sent through the sending device of the device, such as an antenna and a radio frequency device.
- the above units may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital singnal processors). , DSP), or, one or more field programmable gate arrays (FPGA), etc.
- ASIC application specific integrated circuits
- DSP digital singnal processors
- FPGA field programmable gate arrays
- the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
- CPU central processing unit
- these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
- SOC system-on-a-chip
- FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
- the terminal device includes: a processor 110, a memory 120, and a transceiver 130.
- the transceiver 130 may be connected to an antenna.
- the transceiver 130 receives information sent by the base station through an antenna, and sends the information to the processor 110 for processing.
- the processor 110 processes the data of the terminal equipment and sends it to the base station through the transceiver 130.
- the memory 120 is used to store a program that implements the above method embodiment or each unit of the embodiment shown in FIG. 3 to FIG. 6.
- the processor 110 calls the program and executes the operations of the above method embodiment to implement the operations shown in FIG. 3 to FIG. 6. Each unit shown.
- part or all of the above units can also be implemented by embedding on a certain chip of the terminal device in the form of an integrated circuit. And they can be implemented separately or integrated together. That is to say, the above units can be configured as one or more integrated circuits that implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital singnal processors). , DSP), or, one or more field programmable gate arrays (FPGA), etc.
- ASIC application specific integrated circuits
- microprocessors digital singnal processors
- FPGA field programmable gate arrays
- This application also provides a storage medium, including: a readable storage medium and a computer program, where the computer program is used to implement the link state processing method provided in any of the foregoing embodiments.
- the program product includes a computer program (ie, an execution instruction), and the computer program is stored in a readable storage medium.
- At least one processor of the terminal device can read the computer program from a readable storage medium, and at least one processor executes the computer program to enable the terminal device to implement the link state processing methods provided in the foregoing various embodiments.
- An embodiment of the present application also provides a link state processing device, which includes at least one storage element and at least one processing element.
- the at least one storage element is used to store a program.
- the link state is The processing apparatus of executes the operation of the terminal device in any of the foregoing embodiments.
- All or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware.
- the aforementioned program can be stored in a readable memory.
- the program executes the steps of the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, ROM), RAM, flash memory, hard disk, solid state hard disk , Magnetic tape, floppy disk, optical disc, and any combination thereof.
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Abstract
本申请提供一种链路状态的处理方法和装置,该方法包括:向第二终端设备发送第一信息,所述第一信息用于指示所述第二终端设备反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;从所述第二终端设备接收第二信息,所述第二信息用于表示所述第二终端设备所监测的链路状态。本申请提供的链路状态的处理方法和装置可以提高通信性能。
Description
本申请涉及通信技术领域,尤其涉及一种链路状态的处理方法和装置。
对车与外界(Vehicle-To-Everything,V2X)通信过程中,通常需要对链路(sidelink)进行无线链路监测(radio link monitoring,RLM),从而保证数据传输能够在高质量的数据链路上进行。
现有技术中,不仅是接收端的终端设备需要进行RLM,而且发送端的终端设备进行RLM过程也是有必要的,因为发送端的终端设备能够更快的实时获取信道状态,例如:当发送端的终端设备监测到链路失步时,将停止数据的发送,这样可以减少对空口资源的浪费。
然而,在一条side link链路上,当接收端的终端设备和发送端的终端设备同时做RLM过程,且使用不同的度量方法时,有可能会出现两端判断结果不一致的情况,从而导致通信性能不好。
发明内容
本申请实施例提供一种链路状态的处理方法和装置,可以提高通信性能。
第一方面,本申请实施例提供一种链路状态的处理方法,包括:
向第二终端设备发送第一信息,第一信息用于指示第二终端设备反馈链路状态,链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
从第二终端设备接收第二信息,第二信息用于表示第二终端设备所监测的链路状态。
在本方案中,由于第一终端设备向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给第一终端设备,这样,第一终端设备将会获知第二终端设备监测的链路状态,以避免第一终端设备监测的链路状态和第二终端设备监测的链路状态不一致的现象,从而根据第一终端设备监测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
在一种可能的实现方式中,向第二终端设备发送第一信息,包括:
在满足预设条件时,向第二终端设备发送第一信息;
预设条件包括如下至少一个:
第一终端设备监测出链路状态为失步状态或者早期失步状态;
第一终端设备在第一预设时间段内,未向第二终端设备发送数据或者参考信号;或者,
第一终端设备在第二预设时间段内,未进行链路状态的监测。
在本方案中,在第一终端设备监测出链路状态为失步状态时,向第二终端设备发送第一信息,以通过物理层进行信息交互,以查询第二终端设备所监测的链路状态,从而达到第一终端设备和第二终端设备所监测的链路状态一致的目的,从而可以提高通信性能。
另外,第一终端设备在第一预设时间段内未向第二终端设备发送数据时,会向第二终端设备发送第一信息,以指示第二终端设备上报链路状态,以避免因第二终端设备没有接收到任何数据而导致监测结果不准确的现象,从而可以提高链路监测的可靠性。
另外,在本实施例中,当第一终端设备没有进行RLM监测时,通过查询第二终端设备所监测的链路状态,来确定链路情况,从而可以避免空口资源的浪费。
在一种可能的实现方式中,向第二终端设备发送第一信息之前,方法还包括:
向第二终端设备发送第三信息,第三信息用于指示第二终端设备清除之前记录的链路状态。
在本方案中,第一终端设备向第二终端设备发送第三信息,以指示第二终端设备将之前记录的链路状态清除,以保证之前的记录信息不影响新的RLM过程,从而可以提高RLM的准确性。
在一种可能的实现方式中,第一信息或第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
在本方案中,将第一信息或第三信息携带于SCI、CSI、MAC CE或RRC中的至少一种信息中发送给第二终端设备,使得第一信息的发送方式更加灵活。
在一种可能的实现方式中,第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
在本方案中,将第二信息携带于HARQ和/或CSI的反馈信息中发送给第一终端设备,使得第二信息的发送方式更加灵活。
在一种可能的实现方式中,向第二终端设备发送第一信息,包括:
向网络设备发送第一信息,以使网络设备将第一信息转发给第二终端设备。
在本方案中,第一终端设备将第一信息发送给网络设备,由网络设备再将第一信息转发给第二终端设备,由此可以确保第一信息发送的成功率。
在一种可能的实现方式中,从第二终端设备接收第二信息,包括:
从网络设备接收第二信息,第二信息为第二终端设备发送给网络设备的。
在本方案中,第二终端设备将第二信息发送给网络设备,由网络设备再将第二信息转发给第一终端设备,由此可以确保第二信息发送的成功率。
在一种可能的实现方式中,方法还包括:
根据第二信息,确定向第二终端设备发送数据的状态,发送数据的状态包括继续发送或停止发送。
在本方案中,第一终端设备可以根据第二终端设备反馈的第二信息,确定是继续向第二终端设备发送数据还是停止向第二终端设备发送数据,这样,有利于降低第一 终端设备和第二终端设备对链路失步判断结果的不一致性,从而不仅可以降低空口资源的浪费,而且可以提高通信性能。
第二方面,本申请实施例提供一种链路状态的处理方法,应用于第二终端设备,方法包括:
从第一终端设备接收第一信息,第一信息用于指示第二终端设备反馈链路状态,链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
向第一终端设备发送第二信息,第二信息用于表示第二终端设备所监测的链路状态。
在本方案中,由于第一终端设备向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给第一终端设备,这样,第一终端设备将会获知第二终端设备监测的链路状态,以避免第一终端设备监测的链路状态和第二终端设备监测的链路状态不一致的现象,从而根据第一终端设备监测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
在一种可能的实现方式中,第一信息为第一终端设备在满足预设条件时发送的;
预设条件包括如下至少一个:
第一终端设备监测出链路状态为失步状态;
第一终端设备在第一预设时间段内,未向第二终端设备发送数据;或者,
第一终端设备在第二预设时间段内,未进行链路状态的监测。
在本方案中,在第一终端设备监测出链路状态为失步状态时,向第二终端设备发送第一信息,以通过物理层进行信息交互,以查询第二终端设备所监测的链路状态,从而达到第一终端设备和第二终端设备所监测的链路状态一致的目的,从而可以提高通信性能。
另外,第一终端设备在第一预设时间段内未向第二终端设备发送数据时,会向第二终端设备发送第一信息,以指示第二终端设备上报链路状态,以避免因第二终端设备没有接收到任何数据而导致监测结果不准确的现象,从而可以提高链路监测的可靠性。
另外,在本实施例中,当第一终端设备没有进行RLM监测时,通过查询第二终端设备所监测的链路状态,来确定链路情况,从而可以避免空口资源的浪费。
在一种可能的实现方式中,方法还包括:
从第一终端设备接收第三信息;
根据第三信息清除之前记录的链路状态。
在本方案中,第一终端设备向第二终端设备发送第三信息,第二终端设备根据第三信息将之前记录的链路状态清除,以保证之前的记录信息不影响新的RLM过程,从而可以提高RLM的准确性。
在一种可能的实现方式中,第一信息或第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
在本方案中,将第一信息或第三信息携带于SCI、CSI、MAC CE或RRC中的至少一种信息中发送给第二终端设备,使得第一信息的发送方式更加灵活。
在一种可能的实现方式中,第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
在本方案中,将第二信息携带于HARQ和/或CSI的反馈信息中发送给第一终端设备,使得第二信息的发送方式更加灵活。
在一种可能的实现方式中,从第一终端设备接收第一信息,包括:
从网络设备接收第一信息,第一信息为第一终端设备发送给网络设备的。
在本方案中,第一终端设备将第一信息发送给网络设备,由网络设备再将第一信息转发给第二终端设备,由此可以确保第一信息发送的成功率。
在一种可能的实现方式中,向第一终端设备发送第二信息,包括:
向网络设备发送第二信息,以使网络设备将第二信息发送给第一终端设备。
在本方案中,第二终端设备将第二信息发送给网络设备,由网络设备再将第二信息转发给第一终端设备,由此可以确保第二信息发送的成功率。
第三方面,本申请实施例提供一种链路状态的处理装置,包括:
发送单元,用于向第二终端设备发送第一信息,第一信息用于指示第二终端设备反馈链路状态,链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
接收单元,用于从第二终端设备接收第二信息,第二信息用于表示第二终端设备所监测的链路状态。
在一种可能的实现方式中,发送单元,具体用于:
在满足预设条件时,向第二终端设备发送第一信息;
预设条件包括如下至少一个:
第一终端设备监测出链路状态为失步状态或者早期失步状态;
第一终端设备在第一预设时间段内,未向第二终端设备发送数据或者参考信号;或者,
第一终端设备在第二预设时间段内,未进行链路状态的监测。
在一种可能的实现方式中,发送单元,还用于:
向第二终端设备发送第三信息,第三信息用于指示第二终端设备清除之前记录的链路状态。
在一种可能的实现方式中,第一信息或第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
在一种可能的实现方式中,第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
在一种可能的实现方式中,发送单元,具体用于:
向网络设备发送第一信息,以使网络设备将第一信息转发给第二终端设备。
在一种可能的实现方式中,接收单元,具体用于:
从网络设备接收第二信息,第二信息为第二终端设备发送给网络设备的。
在一种可能的实现方式中,装置还包括:处理单元;
处理单元,用于根据第二信息,确定向第二终端设备发送数据的状态,发送数据的状态包括继续发送或停止发送。
第四方面,本申请实施例提供一种链路状态的处理装置,包括:
接收单元,用于从第一终端设备接收第一信息,第一信息用于指示链路状态的处理装置反馈链路状态,链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
发送单元,用于向第一终端设备发送第二信息,第二信息用于表示链路状态的处理装置所监测的链路状态。
在一种可能的实现方式中,第一信息为第一终端设备在满足预设条件时发送的;
预设条件包括如下至少一个:
第一终端设备监测出链路状态为失步状态;
第一终端设备在第一预设时间段内,未向链路状态的处理装置发送数据;或者,
第一终端设备在第二预设时间段内,未进行链路状态的监测。
在一种可能的实现方式中,装置还包括:处理单元;
接收单元,还用于从第一终端设备接收第三信息;
处理单元,用于根据第三信息清除之前记录的链路状态。
在一种可能的实现方式中,第一信息或第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
在一种可能的实现方式中,第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
在一种可能的实现方式中,接收单元,具体用于:
从网络设备接收第一信息,第一信息为第一终端设备发送给网络设备的。
在一种可能的实现方式中,发送单元,具体用于:
向网络设备发送第二信息,以使网络设备将第二信息发送给第一终端设备。
本申请第三方面-第四方面提供的装置,可以是终端设备,也可以是终端设备内的芯片,所述终端设备或所述芯片具有实现上述各方面或其任意可能的设计中的链路状态的处理方法的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
所述终端设备包括:处理单元和收发单元,所述处理单元可以是处理器,所述收发单元可以是收发器,所述收发器包括射频电路,可选地,所述终端设备还包括存储单元,所述存储单元例如可以是存储器。当所述终端设备包括存储单元时,所述存储单元用于存储计算机执行指令,所述处理单元与所述存储单元连接,所述处理单元执行所述存储单元存储的计算机执行指令,以使所述终端设备执行上述各方面或其任意可能的设计中的链路状态的处理方法。
所述芯片包括:处理单元和收发单元,所述处理单元可以是处理器,所述收发单元可以是所述芯片上的输入/输出接口、管脚或电路等。所述处理单元可执行存储单元存储的计算机执行指令,以使所述芯片执行上述各方面或其任意可能的设计中的链路状态的处理方法。可选地,所述存储单元可以是所述芯片内的存储单元(例如,寄存器、缓存等),所述存储单元还可以是所述终端设备内的位于所述芯片外部的存储单元(例如,只读存储器(read-only memory,ROM))或可存储静态信息和指令的其他类型的静态存储 设备(例如,随机存取存储器(random access memory,RAM))等。
上述提到的处理器可以是一个中央处理器(central processing unit,CPU)、微处理器或专用集成电路(application specific integrated circuit,ASIC),也可以是一个或多个用于控制上述各方面或其任意可能的设计的链路状态的处理方法的程序执行的集成电路。
本申请实施例的第五方面提供了一种计算机可读存储介质,用于存储计算机指令,当其在计算机上运行时,使得计算机执行本申请实施例的第一方面至第二方面任一方面提供的链路状态的处理方法。
本申请实施例的第六方面提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行本申请实施例的第一方面至第二方面任一方面提供的链路状态的处理方法。
本申请实施例的第七方面提供了一种链路状态的处理装置,包括:存储器、处理器以及计算机程序;其中,所述计算机程序被存储在所述存储器中,并且被配置为由所述处理器执行,所述计算机程序包括用于执行如第一方面至第二方面任一方面所述的方法的指令。
本申请提供的链路状态的处理方法和装置,第一终端设备向第二终端设备发送第一信息,该第一信息用于指示第二终端设备反馈链路状态,该链路状态包括同步状态、早期同步状态、失步状态或早期失步状态,并从第二终端设备接收第二信息,该第二信息用于表示第二终端设备所监测的链路状态。由于第一终端设备向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给第一终端设备,这样,第一终端设备将会获知第二终端设备监测的链路状态,从而根据第一终端设备监测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
图1为本申请实施例提供的一种通信系统的结构示意图;
图2为本申请链路状态的处理方法的一种信令交互图;
图3为本申请实施例提供的一种链路状态的处理装置的结构示意图;
图4为本申请实施例提供的另一种链路状态的处理装置的结构示意图;
图5为本申请实施例提供的又一种链路状态的处理装置的结构示意图;
图6为本申请实施例提供的再一种链路状态的处理装置的结构示意图;
图7为本申请实施例提供的一种终端设备的结构示意图。
以下,对本申请中的部分用语进行解释说明,以便于本领域技术人员理解。
1)本申请中的单元是指功能单元或逻辑单元。其可以为软件形式,通过处理器执行程序代码来实现其功能;也可以为硬件形式。
2)“多个”是指两个或两个以上,其它量词与之类似。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A, 同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。“以上”或“以下”等所描述的范围包括边界点。
在本申请中,第一终端设备可以为具有发送能力的设备,第二终端设备可以为具有接收能力的设备。
为了下述各实施例的描述清楚简洁,首先给出相关技术的简要介绍:
本申请下述各实施例提供的通信方法,可适用于通信系统中。图1为本申请实施例提供的一种通信系统的结构示意图。如图1所示,该通信系统可以包括至少一个网络设备10和位于网络设备10覆盖范围内的至少一个终端设备。终端设备可以是固定位置的,也可以是可移动的。图1只是示意图,该通信系统中还可以包括其它设备,如还可以包括核心网设备(在图1中未示出),网络设备通过无线或有线方式与核心网设备连接。核心网设备与网络设备可以是独立的不同的物理设备,也可以将核心网设备的功能与网络设备的逻辑功能集成在同一个物理设备上,还可以是一个物理设备上集成了部分核心网设备的功能和部分的网络设备的功能。此外,该通信系统中还可以包括其它网络设备,如还可以包括无线中继设备和无线回传设备,在图1中未示出。本申请的实施例对该通信系统中包括的核心网设备、网络设备和终端设备的数量不做限定。
在图1所示实施例的通信系统中,终端设备14至终端设备16可组成一个设备到设备的通信系统,在设备到设备的通信系统中,终端设备15作为发送者,可以向终端设备14和终端设备16中的一个或多个终端设备发送信息,相应的,终端设备14和终端设备16可以分别或同时向终端设备15发送数据。
另外,如图1所示,以网络设备10与终端设备的通信进行说明。具体的,网络设备10作为发送者,可以向终端设备11至终端设备16中的一个或某几个终端设备发送下行信息。相应的,能够与网络设备10直接通信的终端设备11至终端设备15也可以分别或同时向网络设备10发送上行信息。
其中,网络设备是网络侧中一种用于发射或接收信号的实体,如新一代基站(generation Node B,gNodeB)。网络设备可以是用于与移动设备通信的设备。网络设备可以是无线局域网(wireless local area networks,WLAN)中的AP,全球移动通信系统(global system for mobile communications,GSM)或码分多址(Code Division Multiple Access,CDMA)中的基站(base transceiver station,BTS),也可以是宽带码分多址(Wideband Code Division Multiple Access,WCDMA)中的基站(NodeB,NB),还可以是长期演进(Long Term Evolution,LTE)中的演进型基站(evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的公共陆地移动网络(public land mobile network,PLMN)网络中的网络设备,或NR系统中的gNodeB等。另外,在本申请实施例中,网络设备为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(small cell)对应的基站,这里的小小区可以包括:城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等,这些小小区具有覆盖范围小、发射功率 低的特点,适用于提供高速率的数据传输服务。此外,在其它可能的情况下,网络设备可以是其它为终端设备提供无线通信功能的装置。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。为方便描述,本申请实施例中,为终端设备提供无线通信功能的装置称为网络设备。
其中,终端设备可以是能够接收网络设备调度和指示信息的无线终端设备,无线终端设备可以是指向用户提供语音和/或数据连通性的设备,或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端设备可以经无线接入网(如,radio access network,RAN)与一个或多个核心网或者互联网进行通信,无线终端设备可以是移动终端设备,如移动电话(或称为“蜂窝”电话,手机(mobile phone))、计算机和数据卡,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。例如,个人通信业务(personal communications service,PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(wireless local loop,WLL)站、个人数字助理(personal digital assistant,PDA)、平板电脑(Pad)、带无线收发功能的电脑等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station),移动站(mobile station)、移动台(mobile station,MS)、远程站(remote station)、接入点(access point,AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户站(subscriber station,SS)、用户端设备(customer premises equipment,CPE)、终端(terminal)、用户设备(user equipment,UE)、移动终端(mobile terminal,MT)等。无线终端设备也可以是可穿戴设备以及下一代通信系统,例如,5G网络中的终端设备或者未来演进的PLMN网络中的终端设备,新无线电(new radio,NR)通信系统中的终端设备等。
上述所述的通信系统可以是LTE系统,也可以是高级的长期演进(LTE Advanced,LTE-A)系统,还可以是5G NR系统。本申请实施例也可以应用于其它的通信系统,只要该通信系统中存在实体能够向另一实体发送第一信息,该第一信息用于指示另一实体反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态,并从另一实体接收第二信息,该第二信息用于表示另一实体所监测的链路状态。在上述实体发送了第一信息之后,另一个实体能够根据第一信息,向上述实体发送第二信息,以将另一实体监测的链路状态上报给上述实体。
网络设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
进一步地,本申请实施例的方案应用于V2X通信过程中,对设备与设备之间的通信链路(sidelink)进行RLM的应用场景中。
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
下面首先针对本申请实施例适用场景进行简要说明。
V2X通信过程中,对设备与设备之间的通信链路(sidelink)进行RLM时,不仅是接收端的终端设备需要进行RLM,而且发送端的终端设备进行RLM过程也是有必要的,因为发送端的终端设备能够更快的实时获取信道状态,例如:当发送端的终端设备监测到链路失步时,将停止数据的发送,这样可以减少对空口资源的浪费。然而,在一条side link链路上,当接收端的终端设备和发送端的终端设备同时做RLM过程,且使用不同的度量方法时,有可能会出现两端判断结果不一致的情况,例如:发送端的终端设备判断链路失步,但接收端的终端设备判断链路同步,此种情况的出现,属于发送端的终端设备误警,即从接收端的终端设备看来,数据接收是正常的,希望发送端的终端设备继续发送数据,但发送端的终端设备由于判断为链路失步,会停止数据发送,这样将会降低通信性能。另外,如果接收端的终端设备判断链路失步,但发送端的终端设备判断链路同步,此种情况的出现,属于发送端的终端设备漏警,即从接收端的终端设备看来,数据接收不正常,属于链路失步,希望发送端的终端设备停止发送数据,或者寻找更合适的信道去传输数据。此时发送端的终端设备只有等到接收端的终端设备反馈链路失步后,才能停止发送数据,这样会浪费空口资源,而且也会降低通信性能。因此,在发送端的终端设备和接收端的终端设备均进行RLM时,如何提高通信性能,是本申请实施例需要解决的技术问题。
本申请实施例中考虑到上述问题,提出了一种链路状态的处理方法,第一终端设备向第二终端设备发送第一信息,该第一信息用于指示第二终端设备反馈链路状态,该链路状态包括同步状态、早期同步状态、失步状态或早期失步状态,并从第二终端设备接收第二信息,该第二信息用于表示第二终端设备所监测的链路状态。由于第一终端设备向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给第一终端设备,这样,第一终端设备将会获知第二终端设备监测的链路状态,从而根据第一终端设备监测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
需要说明的是:在现有技术中,通过RLM过程,判断链路是否失败,如果判断失败,则认为无线链路质量很差,不可以使用,需要终端设备进行无线链路建立,如果没有判断链路失败,或者判断链路未失败,则认为链路质量可以保证通信,不需要进行无线链路重新建立的动作。
对于边链路,本申请中引入链路失步,链路同步的概念,这里的链路失步表示链路质量差,已经达到或者接近链路失败的程度,即链路失步可以等同于链路失败,也可以比链路失败的定义范围大。这里的链路同步表示链路质量可以保证通信的质量,即不要进行链路新的维护操作,可以等同于链路未失败,也可以比链路未失败的定义范围大。
本申请中描述的链路失步状态和链路早期失步状态,是对检测链路失步状态的一种描述,比如现有标准中,终端设备的高层从物理层连续接收到K个失步指示,则终端设备判断链路为链路失步(或者叫做链路失败),在本申请中可以设定,如果终端设备的高层从物理层连续接收到M个失步指示,则终端设备判断链路为链路早期失步(或者叫做链路早期失败),其中M小于K,如M=2*K/3。
本申请中描述的链路同步状态和链路早期同步状态,是对检测链路同步状态的一 种描述,比如现有标准中,在一定的时间内,终端设备的高层从物理层接收到L个同步指示,则终端设备判断链路为同步(或者叫做链路同步),在本申请中可以设定,如果终端设备的高层从物理层接收到N个同步指示,则终端设备判断链路为链路早期同步(或者叫做链路早期同步),其中N小于L,如N=2*L/3。
下面,通过具体实施例对本申请的技术方案进行详细说明。需要说明的是,下面这几个具体的实施例可以相互结合,对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图2为本申请链路状态的处理方法的一种信令交互图。本实施例以第一终端设备为发送端的终端设备,第二终端设备为接收端的终端设备,以第一终端设备和第二终端设备进行信息交互为例进行说明。在上述图1所示系统架构的基础上,如图2所示,在本实施例中,该链路状态的处理方法可以包括如下步骤:
步骤201:第一终端设备向第二终端设备发送第一信息,该第一信息用于指示第二终端设备反馈链路状态。
在本步骤中,第一终端设备和第二终端设备均会进行RLM。在一种可能的实现方式中,在进行RLM时,对于一个服务小区,网络设备会为终端设备配备一组用于RLM的参考信号资源,称为无线链路监控参考信号(Radio link monitor reference signal,RLM-RS)。终端设备使用RLM-RS对该服务小区的物理下行控制信道(Physical downlink control channel,PDCCH)的误块率(block error rate,BLER)进行估计。如果终端设备对一个预设时间长度T内的各个RLM-RS估计得到的BLER均高于预设门限q
out(如:高于10%),终端设备便要向高层发送失步(out-of-sync)指示,之后继续进行监控,假设在无线链路失步(radio link failure,RLF)计时器启动后,终端设备对另一个预设时间长度T
evaluate_in的RLM-RS估计得到BLER结果,如果该结果高于另一个预设门限q
in(如:2%),说明无线链路质量改善了。终端设备将停止RLF计时器。并向高层发送同步(in-sync)指示,然后重新开始监视BLER是否高于q
out。反之,则说明无线链路质量仍然没有改善,则高层判断无线链路失步。
需要进行说明的是,第一终端设备和第二终端设备可以通过上述方式进行RLM,也可以用其他方式进行RLM,对于RLM的方式,本申请实施例在此不做限制。
为了使第一终端设备和第二终端设备同步RLM的监测结果,第一终端设备可以向第二终端设备发送第一信息。其中,第一信息用于指示第二终端设备反馈其所监测的链路状态。
在一种可能的实现方式中,第一终端设备在向第二终端设备发送第一信息时,可以是在满足预设条件时进行发送。其中,上述的预设条件可以包括如下至少一个:第一终端设备监测出链路状态为失步状态、第一终端设备在第一预设时间段内,未向第二终端设备发送数据、或者,第一终端设备在第二预设时间段内,未进行链路状态的监测。
具体的,第一终端设备在监测出链路状态为失步状态后,并没有直接执行链路失步的所有动作,例如立即释放side link链路或者停止发送数据等,而是向第二终端设备发送第一信息,以等待第二终端设备反馈其所监测的链路状态,如果第二终端设备 确认链路失步,第一终端设备再执行链路失步后的动作。
其中,第一终端设备可以通过如下两种方式确定链路是否失步,也即确定链路状态是否为失步状态:1)、利用高层无线链路控制(radio link control,RLC)的自动重传请求(Automatic Repeat-reQuest,ARQ)过程中的否定应答(Negative Acknowledgement,NACK)/肯定应答(Acknowledgement,ACK)反馈信息来确定,例如:如果第一终端设备连续接收到N1个NACK反馈即可确定出是链路失步,其中,N1例如可以为3或4等。2)、利用物理层终端混合自动反馈重传请求(Hybrid Automatic Repeat request,HARQ)中的NACK/ACK来确定,例如:如果第一终端设备当前接收到NACK的比率超过预设的第一门限值,则确定链路失步。
进一步的,第一终端设备也可以在连续接收到N2个NACK反馈时,确定链路早期失步,此时,第一终端设备会向第二终端设备发送第一信息,其中,N2小于N1。例如:以基于RLC的ARQ为例,假设链路失步的门限是N1=8(连续接收到8个NACK的反馈,则认为链路失步)。通过新定义一个链路早期失步门限N2=5(如第一终端设备连续接收到5个NACK的反馈,认为链路早期失步)。
类似的,在基于HARQ中的NACK/ACK来确定链路是否早期失步时,也可以设定第二门限值,如果第一终端设备当前接收到NACK的比率超过预设的第二门限值,则确定链路早期失步,其中,第二门限值小于第一门限值。
在本实施例中,在第一终端设备监测出链路状态为失步状态时,向第二终端设备发送第一信息,以通过物理层进行信息交互,以查询第二终端设备所监测的链路状态,从而达到第一终端设备和第二终端设备所监测的链路状态一致的目的,从而可以提高通信性能。
另外,第一终端设备在第一预设时间段内未向第二终端设备发送数据时,会向第二终端设备发送第一信息。具体地,当第二终端设备执行RLM过程,依赖于第一终端设备发送数据时,可能会存在第一终端设备长时间未发送数据,导致第二终端设备进行误判。例如:如果第一终端设备在100ms中没有发送任何数据给第二终端设备,第二终端设备将无法识别是由于第一终端设备没有发送数据,还是由于链路质量差导致接收不到数据。此时,第一终端设备会向第二终端设备发送第一信息,以使第二终端设备反馈其所监测的链路状态。具体做法可以是采用定时器的方法,步骤如下:在第一终端设备侧配置一个定时no_Data_timer1,定时器时长为T1(如T1=100ms),并启动该定时器;如果调度发送一个数据给第二终端设备,则重启定时器;如果定时器超时,且第一终端设备未发送数据给第二终端设备,则触发链路状态查询,也即向第二终端设备发送第一信息。
在本实施例中,第一终端设备在第一预设时间段内未向第二终端设备发送数据时,会向第二终端设备发送第一信息,以指示第二终端设备上报链路状态,以避免因第二终端设备没有接收到任何数据而导致监测结果不准确的现象,从而可以提高链路监测的可靠性。
另外,第一终端设备在第二预设时间段内未进行链路状态的监测时,会向第二终端设备发送第一信息。具体地,第一终端设备在第二预设时间段内未进行链路状态的监测,即无法感知链路的质量时,可以主动查询第二终端设备的链路监测情况。其中, 第一终端设备未能进行链路监测的情况包括如下几种情况:(1)在RLC层,数据传输是非确认模式时,第二终端设备不会对接收到的数据进行ACK/NACK反馈,因此第一终端设备无法利用RLC的ARQ的反馈信息做链路监测。(2)对于HARQ过程,HARQ-ACK的反馈去使能(disable),这样第二终端设备也不会反馈HARQ-ACK,此时第一终端设备无法利用HARQ-ACK进行链路监测。(3)由于第一终端设备的能力限制,如第一终端设备进行RLM监测时,其监测能力是受限制的,比如一个第一终端设备最多只能监测8条链路(side link),或者监测8个用于RLM的参考信号,当需要检测的链路(side link)超过第一终端设备的监测能力时,第一终端设备会停止某些链路状态的监测。
在本实施例中,当第一终端设备没有进行RLM监测时,通过查询第二终端设备所监测的链路状态,来确定链路情况,从而可以避免空口资源的浪费。
需要进行说明的是,第一终端设备可以在满足上述任意一个预设条件时,向第二终端设备发送第一信息,也可以是在满足上述至少两个预设条件时,向第二终端设备发送第一信息。
进一步的,第一终端设备在第一预设时间段内,未向第二终端设备发送数据,此时,第一终端设备在向第二终端设备发送第一信息之前,还可以向第二终端设备发送第三信息,该第三信息用于指示第二终端设备清除之前记录的链路状态,这里的链路状态包括:同步计数器,失步计数器或同步恢复定时器等。
具体地,第三信息可以为RLM复位或者重启命令,其中,复位或者重启是指,第二终端设备需要将RLM相关过程参数进行复位,即清理掉之前记录的信息,以保证之前的记录信息不影响新的RLM过程。
第二终端设备根据第三信息将之前记录的链路状态清除后,在预设时间段之后,若满足前述的预设条件,则第一终端设备会继续向第二终端设备发送第一信息,以指示第二终端设备反馈链路状态。
在本实施例中,第一终端设备向第二终端设备发送第三信息,以指示第二终端设备将之前记录的链路状态清除,以保证之前的记录信息不影响新的RLM过程,从而可以提高RLM的准确性。
进一步地,上述的第一信息可以携带于边链路控制信息(side link control information,SCI)、信道状态指示信息(channel state indication,CSI)、媒体接入控制(media access control,MAC)控制单元(control element,CE)或无线资源控制(Radio Resource Control,RRC)中的至少一种信息中。
具体地,在一种可能的实现方式中,若第一信息携带于通过边链路物理控制信道(Physical side link control channel,PSCCH)中发送的SCI中发送时,可以是在SCI中新增一个nbit的字段或者信元,以表示第一信息。例如:若n为1,则该新增字段的值为1时,表示第二终端设备需要向第一终端设备反馈其所监测的链路状态,若该新增字段的值为0时,表示第二终端设备不需要向第一终端设备反馈其所监测的链路状态。当然,也可以是在该新增字段的值为1时,表示第二终端设备不需要向第一终端设备反馈其所监测的链路状态,若该新增字段的值为0时,表示第二终端设备需要向第一终端设备反馈其所监测的链路状态。
示例性的,SCI的格式可以如下表1中所示:
表1
其中,链路状态请求即为上述各实施例中的第一信息。
在另一种可能的实现方式中,若第一信息携带于SCI中发送时,也可以使用SCI中现有的字段或者信元,以表示第一信息。例如:现有技术中,通常是通过N bit表示数据调度频域分配信息,在本实施例中,可以通过预留一种或多种N bit的组合信息,以表示第一信息。例如:预留全1bit表示需要向第一终端设备反馈其所监测的链路状态。
示例性的,SCI的格式可以如下表2中所示:
表2
其中,在上述表2中,频域资源分配信息有N bit,可以预配置一个或者多个bit信息的组合,表示第一信息,以指示第二终端设备反馈RLM状态。比如N=5时,使用11111表示第一信息,以指示第二终端设备反馈RLM链路状态。
需要说明的是,当前使用预配置或者预设置的bit组合时,可以认为频域调度信息无效,仅仅指示第二终端设备反馈RLM链路状态,而不存在数据调度,也可以认为频域调度信息是有效的,对应一种预配置的频域调度信息,且指示第二终端设备反馈RLM链路状态,此时存在数据的调度。
另外,第一信息还可以携带在CSI中。具体的,可以在CSI状态测试和上报配置中,增加1bit字段或者多bit字段来表示第一信息,以指示第二终端设备反馈监测的链路状态。
示例性的,CSI的格式可以如下表3中所示:
表3
其中,可以通过表3中的链路状态请求来表示第一信息,以指示第二终端设备反馈监测的链路状态,例如:若链路状态请求RLM-status的值为1,则表示第二终端设备需要反馈链路状态,若链路状态请求RLM-status的值为0,则表示第二终端设备不需要反馈链路状态。
另外,在第一终端设备向第二终端设备发送第三信息时,第一信息和第三信息还可以携带在高层信令中进行发送,例如可以携带在MAC CE中发送。示例性的,MAC CE的格式可以如下表4中所示:
表4
其中,表4中的inquire type,目的是指示第二终端设备在哪种条件下反馈链路监测情况。如当sidelink链路反馈资源不足时,则指示0,即链路同步时进行反馈,若链路失步则不反馈。如果sidelink链路反馈资源充足,则指示为1,即不论链路是失步还是同步,均反馈实际监测的状态信息。表4中的timer设置,当链路质量比较差时,终端设备有可能接收不到数据,或者反馈时第一终端设备没有检测到反馈的信息,第一终端设备则会认为链路失步,或者重新再次发送第一信息。表4中的RX-slots:推荐第二终端设备反馈链路状态时使用的时间资源,可以指示到子帧/时隙符号,在这些时隙上,第一终端设备采用接收的模式,避免双工问题(就是在这些时隙上,第一终端设备不发送任何信息,采用接收的方法,以免因第一终端设备发送数据而接收不了反馈信息)。其中,时隙可用位图bitmap的方式指示,比如10bit MAP:0000100001,表示希望第二终端设备在第5时隙和第10时隙上反馈链路状态。
值得注意的是,当表4中的timer定时器时间比较短时,第二终端设备可以只复位相应时间段内链路监测的结果,而不需要清理所有的监测结果。比如:当timer定时器是100ms时,第二终端设备可以只复位在该100ms时间段内的监测结果。
第二终端设备在接收到第一终端设备发送的上述MAC CE时,即可获知需要向第一终端设备反馈监测的链路状态,并且会根据inquire type和RX-slots进行链路状态的反馈。
另外,第一信息还可以携带在RRC中进行发送。示例性的,RRC的格式可以如下表5中所示:
表5
其中,上述表5中的cell ID,表示对端终端设备(如第二终端设备)所在的小区识别号,相关信息的获取可以由第一终端设备和第二终端设备建立sidelink连接时进行获取。上述表5中的终端设备ID,表示对端终端设备(如第二终端设备)识别号,可以是小区无线网络临时标识(Cell Radio Network Temporary Identifier,C-RNTI),或者其它由高层分配的ID,相关信息的获取可以由第一终端设备和第二终端设备建立sidelink连接时进行获取。
第二终端设备在接收到第一终端设备发送的上述RRC时,即可获知需要向第一终端设备反馈监测的链路状态。
在本实施例中,将第一信息携带于SCI、CSI、MAC CE或RRC中的至少一种信息中发送给第二终端设备,使得第一信息的发送方式更加灵活。
进一步的,需要进行说明的是,上述的第三信息,也可以携带于SCI、CSI、MAC CE或RRC中的至少一种信息中发送给第二终端设备,具体的携带方式与第一信息类似,具体可以参考上述描述,此处不再赘述。
示例性的,第一终端设备向第二终端设备发送第一信息,传输链路可以是sidelink,也可以通过网络设备进行转发,也就是说,可以是第一终端设备向网络设备发送该第一信息,该网络设备再将上述第一信息转发给第二终端设备。
值得注意的是,在通过网络设备进行第一信息的转发时,第一信息通常是携带在如表5中的RRC消息中进行发送。具体地,若第一终端设备和第二终端设备在同一个网络设备的覆盖区域时,则需要该网络设备进行第一信息的转发。例如:若第一终端设备和第二终端设备均在网络设备1的覆盖区域,则第一终端设备可以将第一信息发送给网络设备1,网络设备1根据第一信息中的终端设备ID,将该第一信息发送给终端设备ID对应的第二终端设备。
若第一终端设备和第二终端设备在不同的网络设备的覆盖区域时,则还需要进行网络设备间的转发。例如:若第一终端设备在网络设备1的覆盖区域,第二终端设备在网络设备2的覆盖区域,则第一终端设备将第一信息发送给网络设备1,网络设备1根据第一信息中的CELL ID将第一信息转发给网络设备2,网络设备2根据终端设备ID将该第一信息发送给终端设备ID对应的第二终端设备。
在本实施例中,第一终端设备将第一信息发送给网络设备,由网络设备再将第一信息转发给第二终端设备,由此可以确保第一信息发送的成功率。
步骤202:第二终端设备向第一终端设备发送第二信息,该第二信息用于表示第二终端设备所监测的链路状态。
在本步骤中,第一终端设备向第二终端设备发送第一信息后,第二终端设备会向第一终端设备返回第二信息,以向第一终端设备反馈第二终端设备所监测的链路状态。这样,第二终端设备可以将其监测的链路状态同步给第一终端设备,从而可以使得第一终端设备和第二终端设备监测的链路状态一致,避免了由于第一终端设备判断链路失步,但第二终端设备判断链路同步,造成第一终端设备停止发送数据,使得通信性能较低的现象,另外,还可以避免由于第二终端设备判断链路失步,但第一终端设备 判断链路同步,而第一终端设备继续发送数据,造成空口资源浪费的现象。
示例性的,第二终端设备通过第二信息向第一终端设备反馈其所监测的链路状态时,可以使用1bit表示,也可使用多bit表示,例如可以仅反馈一种链路状态,如在链路失步时才反馈,或者只有链路同步时才反馈,也可以反馈两种状态,如链路失步或者链路同步时均进行反馈,或者还可以反馈多种状态,如链路失步、链路同步,链路早期失步、链路早期同步等。
在一种可能的实现方式中,第二信息可以携带于HARQ和/或CSI的反馈信息中,也就是说,第二终端设备可以通过HARQ和/或CSI的反馈信息向第一终端设备发送第二信息。
具体地,对于第二终端设备,当接收到第一信息时,会进行链路状态的反馈,也即向第一终端设备返回第二信息,该第二信息可以使用单独的信元,也可以占用HARQ-ACK的反馈位置,即:此调度数据的HARQ-ACK信息不再反馈,而是反馈链路状态,如:1表示链路失步,0表示链路同步。
其中,现有的HARQ-ACK的格式如表6所示:
表6
在一种实现方式中,如果使用单独的信元表示第二信息时,可以是在表6所示内容的基础上,在HARQ-ACK中新增一个字段,来反馈第二终端设备所监测的链路状态,其中,HARQ-ACK的格式可以如表7所示:
表7
其中,若该新增字段的值为“0”,可以表示链路失步,若该新增字段的值为“1”,则表示链路同步。
在另一种实现方式中,第二信息也可以占用HARQ-ACK的反馈位置,也即通过 表6中的字段反馈第二终端设备所监测的链路状态。具体的,HARQ-ACK的格式可以如表8所示:
表8
在又一种实现方式中,第二信息也可以携带于CSI的反馈信息中发送给第一终端设备,也即在调度CSI的反馈资源中,反馈链路状态。其中,可以是在CSI的反馈信息中新增一个字段或者信元来表示第二信息,也可以占用原来的字段或者信元来表示第二信息,具体的表示方式与HARQ类似,可以参考前述的描述方式,对于通过CSI的反馈信息表示第二信息的具体方式,在此不再赘述。
在本实施例中,将第二信息携带于HARQ和/或CSI的反馈信息中发送给第一终端设备,使得第二信息的发送方式更加灵活。
另外,第二终端设备向第一终端设备发送第二信息时,传输链路可以是sidelink,也可以通过网络设备进行转发,也就是说,可以是第二终端设备向网络设备发送该第二信息,该网络设备再将上述第二信息转发给第一终端设备。值得注意的是,若第二终端设备在预设时间段内(例如50ms内),无法获取到side link空口资源时,则需要通过网络设备进行第二信息的转发。
在本实施例中,第二终端设备将第二信息发送给网络设备,由网络设备再将第二信息转发给第一终端设备,由此可以确保第二信息发送的成功率。
进一步的,第一终端设备向第二终端设备发送第一信息时,可以设置定时器,当定时器超时,但仍然未接收到第二终端设备反馈的第二信息时,即可认为第二终端设备的链路失步,即判断链路进入失步。这样,当side link很差,导致第二终端设备无法接收到第一信息,或者反馈的第二信息无法由第一终端设备正确解析到时,第一终端设备可以确定第二终端设备的链路失步,而不需要一直等待第二终端设备的反馈,以节约资源。
示例性的,在第一终端设备接收到第二终端设备发送的第二信息后,第一终端设 备可以根据该第二信息,确定向第二终端设备发送数据的状态,其中,该发送数据的状态包括继续发送或者停止发送。
具体的,若第二终端设备通过第二信息指示其所监测的链路状态为同步状态或者早期同步状态,则第一终端设备将继续向第二终端设备发送数据。若第二终端设备通过第二信息指示其所监测的链路状态为失步状态或者早期失步状态,则第一终端设备将停止向第二终端设备发送数据。
在本实施例中,第一终端设备可以根据第二终端设备反馈的第二信息,确定是继续向第二终端设备发送数据还是停止向第二终端设备发送数据,这样,有利于降低第一终端设备和第二终端设备对链路失步判断结果的不一致性,从而不仅可以降低空口资源的浪费,而且可以提高通信性能。
本申请实施例提供的链路状态的处理方法,第一终端设备向第二终端设备发送第一信息,该第一信息用于指示第二终端设备反馈链路状态,该链路状态包括同步状态、早期同步状态、失步状态或早期失步状态,并从第二终端设备接收第二信息,该第二信息用于表示第二终端设备所监测的链路状态。由于第一终端设备向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给第一终端设备,这样,第一终端设备将会获知第二终端设备监测的链路状态,从而根据第一终端设备监测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
另外,对于确认当前链路已经无法满足side link的通信需求时,如链路失步或者早期链路失步,上述实施例中描述的第一终端设备停止发送数据是其中的一种方法,进一步的,无论是经过第二终端设备确认,还是第一终端设备或者第二终端设备判断链路失步,第一终端设备或者第二终端设备还可以向网络设备进一步请求增大发送功率,或者暂且停止数据的发送,并进行携带参考信号的空数据包的发送,第二终端设备只利用空数据进行链路测量,不进行PSSCH的接收、解调和译码等,等链路恢复后,再继续进行数据的发送过程。
图3为本申请实施例提供的一种链路状态的处理装置的结构示意图,其中,链路状态的处理装置30可以是前述实施例中的第一终端设备。参见图3,该装置包括:发送单元11和接收单元12,其中:
发送单元11,用于向第二终端设备发送第一信息,所述第一信息用于指示所述第二终端设备反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
接收单元12,用于从所述第二终端设备接收第二信息,所述第二信息用于表示所述第二终端设备所监测的链路状态。
本申请实施例提供的链路状态的处理装置,发送单元11向第二终端设备发送第一信息,该第一信息用于指示第二终端设备反馈链路状态,该链路状态包括同步状态、早期同步状态、失步状态或早期失步状态,接收单元12从第二终端设备接收第二信息,该第二信息用于表示第二终端设备所监测的链路状态。由于向第二终端发送第一信息后,第二终端设备会将监测的链路状态反馈给链路状态的处理装置,这样,链路状态的处理装置将会获知第二终端设备监测的链路状态,从而根据链路状态的处理装置监 测的链路状态以及第二终端设备监测的链路状态,确定是继续发送数据还是停止发送数据,由此可以提高通信性能。
示例性的,所述发送单元11,具体用于:
在满足预设条件时,向所述第二终端设备发送所述第一信息;
所述预设条件包括如下至少一个:
所述第一终端设备监测出所述链路状态为失步状态或者早期失步状态;
所述第一终端设备在第一预设时间段内,未向所述第二终端设备发送数据或者参考信号;或者,
所述第一终端设备在第二预设时间段内,未进行链路状态的监测。
示例性的,所述发送单元11,还用于:
向所述第二终端设备发送第三信息,所述第三信息用于指示所述第二终端设备清除之前记录的链路状态。
示例性的,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
示例性的,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
示例性的,所述发送单元11,具体用于:
向网络设备发送所述第一信息,以使所述网络设备将所述第一信息转发给所述第二终端设备。
示例性的,所述接收单元12,具体用于:
从所述网络设备接收所述第二信息,所述第二信息为所述第二终端设备发送给所述网络设备的。
图4为本申请实施例提供的另一种链路状态的处理装置的结构示意图,在图3所示结构的基础上,该装置还包括:处理单元13;
所述处理单元13,用于根据所述第二信息,确定向所述第二终端设备发送数据的状态,所述发送数据的状态包括继续发送或停止发送。
本申请实施例提供的链路状态的处理装置,可以执行上述对应的方法实施例,例如可以是图2所示的实施例,其实现原理和技术效果类似,在此不再赘述。
需要说明的是,应理解以上装置的各个单元的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些单元可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分单元通过软件通过处理元件调用的形式实现,部分单元通过硬件的形式实现。例如,发送单元可以为单独设立的处理元件,也可以集成在该装置的某一个芯片中实现,此外,也可以以程序的形式存储于装置的存储器中,由该装置的某一个处理元件调用并执行该发送单元的功能。其它单元的实现与之类似。此外这些单元全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件可以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。此外,以上发送单元是一种控制发送的单元,可以通 过该装置的发送装置,例如天线和射频装置发送信息。
以上这些单元可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器(digital singnal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。再如,当以上某个单元通过处理元件调度程序的形式实现时,该处理元件可以是通用处理器,例如中央处理器(central processing unit,CPU)或其它可以调用程序的处理器。再如,这些单元可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
图5为本申请实施例提供的又一种链路状态的处理装置的结构示意图,其中,链路状态的处理装置50可以是前述实施例中的第二终端设备。参见图5,该装置包括:接收单元21和发送单元22,其中:
接收单元21,用于从第一终端设备接收第一信息,所述第一信息用于指示所述链路状态的处理装置反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;
发送单元22,用于向所述第一终端设备发送第二信息,所述第二信息用于表示所述链路状态的处理装置所监测的链路状态。
示例性的,所述第一信息为所述第一终端设备在满足预设条件时发送的;
所述预设条件包括如下至少一个:
所述第一终端设备监测出所述链路状态为失步状态;
所述第一终端设备在第一预设时间段内,未向所述链路状态的处理装置发送数据;或者,
所述第一终端设备在第二预设时间段内,未进行链路状态的监测。
图6为本申请实施例提供的再一种链路状态的处理装置的结构示意图,在图5所示结构的基础上,该装置还包括:处理单元23;
所述接收单元21,还用于从所述第一终端设备接收第三信息;
所述处理单元23,用于根据所述第三信息清除之前记录的链路状态。
示例性的,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
示例性的,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
示例性的,接收单元21,具体用于:
从网络设备接收第一信息,第一信息为第一终端设备发送给网络设备的。
在一种可能的实现方式中,发送单元22,具体用于:
向网络设备发送第二信息,以使网络设备将第二信息发送给第一终端设备。
本申请实施例提供的链路状态的处理装置,可以执行上述对应的方法实施例,例如可以是图2所示的实施例,其实现原理和技术效果类似,在此不再赘述。
需要说明的是,应理解以上装置的各个单元的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些单元可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分 单元通过软件通过处理元件调用的形式实现,部分单元通过硬件的形式实现。例如,发送单元可以为单独设立的处理元件,也可以集成在该装置的某一个芯片中实现,此外,也可以以程序的形式存储于装置的存储器中,由该装置的某一个处理元件调用并执行该发送单元的功能。其它单元的实现与之类似。此外这些单元全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件可以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。此外,以上发送单元是一种控制发送的单元,可以通过该装置的发送装置,例如天线和射频装置发送信息。
以上这些单元可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器(digital singnal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。再如,当以上某个单元通过处理元件调度程序的形式实现时,该处理元件可以是通用处理器,例如中央处理器(central processing unit,CPU)或其它可以调用程序的处理器。再如,这些单元可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
图7为本申请实施例提供的一种终端设备的结构示意图。如图7所示,该终端设备包括:处理器110、存储器120、收发装置130。收发装置130可以与天线连接。在下行方向上,收发装置130通过天线接收基站发送的信息,并将信息发送给处理器110进行处理。在上行方向上,处理器110对终端设备的数据进行处理,并通过收发装置130发送给基站。
该存储器120用于存储实现以上方法实施例,或者图3-图6所示实施例各个单元的程序,处理器110调用该程序,执行以上方法实施例的操作,以实现图3-图6所示的各个单元。
或者,以上各个单元的部分或全部也可以通过集成电路的形式内嵌于该终端设备的某一个芯片上来实现。且它们可以单独实现,也可以集成在一起。即以上这些单元可以被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器(digital singnal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。
本申请还提供一种存储介质,包括:可读存储介质和计算机程序,所述计算机程序用于实现前述任一实施例提供的链路状态的处理方法。
本申请还提供一种程序产品,该程序产品包括计算机程序(即执行指令),该计算机程序存储在可读存储介质中。终端设备的至少一个处理器可以从可读存储介质读取该计算机程序,至少一个处理器执行该计算机程序使得终端设备实施前述各种实施方式提供的链路状态的处理方法。
本申请实施例还提供了一种链路状态的处理装置,包括至少一个存储元件和至少一个处理元件、所述至少一个存储元件用于存储程序,该程序被执行时,使得所述链路状态的处理装置执行上述任一实施例中的终端设备的操作。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。 前述的程序可以存储于一可读取存储器中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储器(存储介质)包括:只读存储器(英文:read-only memory,ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(magnetic tape)、软盘(floppy disk)、光盘(optical disc)及其任意组合。
Claims (30)
- 一种链路状态的处理方法,其特征在于,应用于第一终端设备,所述方法包括:向第二终端设备发送第一信息,所述第一信息用于指示所述第二终端设备反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;从所述第二终端设备接收第二信息,所述第二信息用于表示所述第二终端设备所监测的链路状态。
- 根据权利要求1所述的方法,其特征在于,所述向第二终端设备发送第一信息,包括:在满足预设条件时,向所述第二终端设备发送所述第一信息;所述预设条件包括如下至少一个:所述第一终端设备监测出所述链路状态为失步状态或者早期失步状态;所述第一终端设备在第一预设时间段内,未向所述第二终端设备发送数据或者参考信号;或者,所述第一终端设备在第二预设时间段内,未进行链路状态的监测。
- 根据权利要求1或2所述的方法,其特征在于,所述向第二终端设备发送第一信息之前,所述方法还包括:向所述第二终端设备发送第三信息,所述第三信息用于指示所述第二终端设备清除之前记录的链路状态。
- 根据权利要求3所述的方法,其特征在于,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
- 根据权利要求1-4任一项所述的方法,其特征在于,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述向第二终端设备发送第一信息,包括:向网络设备发送所述第一信息,以使所述网络设备将所述第一信息转发给所述第二终端设备。
- 根据权利要求6所述的方法,其特征在于,所述从所述第二终端设备接收第二信息,包括:从所述网络设备接收所述第二信息,所述第二信息为所述第二终端设备发送给所述网络设备的。
- 根据权利要求1-7任一项所述的方法,其特征在于,所述方法还包括:根据所述第二信息,确定向所述第二终端设备发送数据的状态,所述发送数据的状态包括继续发送或停止发送。
- 一种链路状态的处理方法,其特征在于,应用于第二终端设备,所述方法包括:从第一终端设备接收第一信息,所述第一信息用于指示所述第二终端设备反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;向所述第一终端设备发送第二信息,所述第二信息用于表示所述第二终端设备所 监测的链路状态。
- 根据权利要求9所述的方法,其特征在于,所述第一信息为所述第一终端设备在满足预设条件时发送的;所述预设条件包括如下至少一个:所述第一终端设备监测出所述链路状态为失步状态;所述第一终端设备在第一预设时间段内,未向所述第二终端设备发送数据;或者,所述第一终端设备在第二预设时间段内,未进行链路状态的监测。
- 根据权利要求9或10所述的方法,其特征在于,所述方法还包括:从所述第一终端设备接收第三信息;根据所述第三信息清除之前记录的链路状态。
- 根据权利要求11所述的方法,其特征在于,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
- 根据权利要求9-12任一项所述的方法,其特征在于,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
- 根据权利要求9-13任一项所述的方法,其特征在于,所述从第一终端设备接收第一信息,包括:从网络设备接收所述第一信息,所述第一信息为所述第一终端设备发送给所述网络设备的。
- 根据权利要求14所述的方法,其特征在于,所述向所述第一终端设备发送第二信息,包括:向所述网络设备发送所述第二信息,以使所述网络设备将所述第二信息发送给所述第一终端设备。
- 一种链路状态的处理装置,其特征在于,包括:发送单元,用于向第二终端设备发送第一信息,所述第一信息用于指示所述第二终端设备反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;接收单元,用于从所述第二终端设备接收第二信息,所述第二信息用于表示所述第二终端设备所监测的链路状态。
- 根据权利要求16所述的装置,其特征在于,所述发送单元,具体用于:在满足预设条件时,向所述第二终端设备发送所述第一信息;所述预设条件包括如下至少一个:所述链路状态的处理装置监测出所述链路状态为失步状态或者早期失步状态;所述链路状态的处理装置在第一预设时间段内,未向所述第二终端设备发送数据或者参考信号;或者,所述链路状态的处理装置在第二预设时间段内,未进行链路状态的监测。
- 根据权利要求16或17所述的装置,其特征在于,所述发送单元,还用于:向所述第二终端设备发送第三信息,所述第三信息用于指示所述第二终端设备清除之前记录的链路状态。
- 根据权利要求18所述的装置,其特征在于,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
- 根据权利要求16-19任一项所述的装置,其特征在于,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
- 根据权利要求16-20任一项所述的装置,其特征在于,所述发送单元,具体用于:向网络设备发送所述第一信息,以使所述网络设备将所述第一信息转发给所述第二终端设备。
- 根据权利要求21所述的装置,其特征在于,所述接收单元,具体用于:从所述网络设备接收所述第二信息,所述第二信息为所述第二终端设备发送给所述网络设备的。
- 根据权利要求16-22任一项所述的装置,其特征在于,所述装置还包括:处理单元;所述处理单元,用于根据所述第二信息,确定向所述第二终端设备发送数据的状态,所述发送数据的状态包括继续发送或停止发送。
- 一种链路状态的处理装置,其特征在于,包括:接收单元,用于从第一终端设备接收第一信息,所述第一信息用于指示所述链路状态的处理装置反馈链路状态,所述链路状态包括同步状态、早期同步状态、失步状态或早期失步状态;发送单元,用于向所述第一终端设备发送第二信息,所述第二信息用于表示所述链路状态的处理装置所监测的链路状态。
- 根据权利要求24所述的装置,其特征在于,所述第一信息为所述第一终端设备在满足预设条件时发送的;所述预设条件包括如下至少一个:所述第一终端设备监测出所述链路状态为失步状态;所述第一终端设备在第一预设时间段内,未向所述链路状态的处理装置发送数据;或者,所述第一终端设备在第二预设时间段内,未进行链路状态的监测。
- 根据权利要求24或25所述的装置,其特征在于,所述装置还包括:处理单元;所述接收单元,还用于从所述第一终端设备接收第三信息;所述处理单元,用于根据所述第三信息清除之前记录的链路状态。
- 根据权利要求26所述的装置,其特征在于,所述第一信息或所述第三信息携带于边链路控制信息SCI、信道状态指示信息CSI、媒体接入控制MAC控制单元CE或无线资源控制RRC中的至少一种信息中。
- 根据权利要求24-27任一项所述的装置,其特征在于,所述第二信息携带于混合自动重传请求HARQ和/或CSI的反馈信息中。
- 一种终端设备,其特征在于,包括:处理器;存储器;以及计算机程序;其中,所述计算机程序被存储在所述存储器中,并且被配置为由所述处理器执行,所述计算机程序包括用于执行如权利要求1-15任一项所述的方法的指令。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,所述计算机程序使得终端设备执行权利要求1-15任一项所述的方法。
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