WO2020143827A1 - 一种控制信息的传输方法及装置 - Google Patents
一种控制信息的传输方法及装置 Download PDFInfo
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- WO2020143827A1 WO2020143827A1 PCT/CN2020/071664 CN2020071664W WO2020143827A1 WO 2020143827 A1 WO2020143827 A1 WO 2020143827A1 CN 2020071664 W CN2020071664 W CN 2020071664W WO 2020143827 A1 WO2020143827 A1 WO 2020143827A1
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- downlink reference
- information
- reference signals
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- timer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W76/30—Connection release
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present application relates to the field of communication technology, and in particular, to a method and device for transmitting control information.
- UE user equipment
- downlink reference signals configured by the base station
- channel state information reference signal channel-state information-reference signal
- CSI-RS channel-state information-reference signal
- the UE uses the downlink reference signal to estimate the link status between it and the base station.
- RSRP reference signal received power
- RSRQ reference signal quality
- FIG. 1 is a schematic diagram of a wireless link detection process in an LTE system.
- the process of radio link monitoring (RLM) in the LTE system includes the following process.
- the UE continuously monitors that the RSRP/RSRQ of the N310 CSI-RSs is lower than the threshold, the timer T310 is started. If there are consecutive N311 CSI-RS signals whose RSRP/RSRQ is higher than the threshold before the timer T310 expires, the wireless link between the UE and the base station is considered to have been restored; otherwise, the wireless link is considered to have failed and the base station You need to reconnect with the UE.
- N310 and N311 are the counter or the corresponding value of the counter.
- the value of N310 can be 200 milliseconds (ms), and the value of N311 can be 100 ms.
- T310 is a timer. In some cases, T310 can also indicate the value corresponding to the timer.
- the order of T310 can be 1 second.
- the RLM process in the 5G system is similar to the LTE system. Furthermore, the 5G system supports unlicensed band communication. Devices working in unlicensed bands can detect whether the channel is free without authorization. When the device detects that the channel is idle, it can access the channel to work. In order to ensure coexistence with other devices operating in unlicensed frequency bands, the device uses a channel competition access mechanism that listens before speaking (LBT: Listen-Before-Talk). Due to LBT restrictions, the periodically configured CSI-RS and SS/PBCH blocks cannot be guaranteed to be sent on preset time-frequency resources, and the RLM process may not work properly.
- LBT Listen-Before-Talk
- Embodiments of the present application provide a control information transmission method. Through the method described in the embodiments of the present application, the UE can obtain a more accurate RLM result.
- an embodiment of the present application provides a method for transmitting control information.
- the method includes: the user equipment UE sends report information to the base station, where the report information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals;
- the UE receives feedback information from the base station, and the feedback information includes transmission status information of the one or more downlink reference signals.
- the UE can obtain a more accurate RLM result, avoid unnecessary reconnection, thereby reducing UE energy consumption and saving system resource overhead.
- the UE when the UE does not detect at least one downlink reference signal or the energy of at least one detected downlink reference signal is lower than a threshold, the UE sends report information to the base station.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the method further includes: the UE updating a timer/counter corresponding to the one or more downlink reference signals.
- the UE can perform more accurate timing/counting and communicate according to the timing/counting results. In other words, the UE can use more accurate RLM results to avoid unnecessary reconnection.
- the method further includes the UE receiving configuration information from the base station, where the configuration information carries parameters for updating a timer/counter corresponding to one or more downlink reference signals.
- timer/counter parameters for the UE for different services.
- the UE can perform timing/counting in different service scenarios more accurately.
- the reference signals configured by UEs in different groups are affected by LBT to different degrees. Therefore, the RLM parameters of UEs in different groups should also be configured differently to compensate for different levels of different reference signals.
- inventions of the present application provide a control information transmission method.
- the method includes: the base station receives report information from user equipment UE, the report information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals;
- the base station sends feedback information to the UE, where the feedback information includes transmission status information of the one or more downlink reference signals.
- the UE can obtain a more accurate RLM result, avoid unnecessary reconnection, thereby reducing UE energy consumption and saving system resource overhead.
- the base station when the UE does not detect at least one downlink reference signal or the energy of at least one detected downlink reference signal is lower than a threshold, the base station receives report information from the UE.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the method further includes the base station sending configuration information to the UE, where the configuration information carries parameters for updating a timer/counter corresponding to one or more downlink reference signals.
- an embodiment of the present application provides a control information transmission device.
- the device includes: a sending module for sending reporting information to the base station, where the reporting information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals; receiving The module is configured to receive feedback information from the base station, where the feedback information includes transmission status information of the one or more downlink reference signals.
- the sending module when the UE does not detect at least one downlink reference signal or the energy of at least one detected downlink reference signal is lower than a threshold value, the sending module sends report information to the base station.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the device further includes: a processing module, configured to update a timer/counter corresponding to the one or more downlink reference signals.
- the receiving module is further configured to receive configuration information from the base station, where the configuration information carries parameters for updating timers/counters corresponding to one or more downlink reference signals.
- an embodiment of the present application provides a control information transmission device.
- the apparatus includes a receiving module for receiving reporting information from user equipment UE, the reporting information includes a detection result of one or more downlink reference signals of the UE or a timer/counter corresponding to one or more downlink reference signals
- the sending module is used to send feedback information to the UE, where the feedback information includes sending status information of the one or more downlink reference signals.
- the receiving module receives the reported information from the UE.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the sending module is further configured to send configuration information to the UE, where the configuration information carries parameters for updating a timer/counter corresponding to one or more downlink reference signals.
- a device for transmitting control information includes a module for performing the method in the first aspect or any possible implementation manner of the first aspect, or for performing the second aspect or the first aspect.
- the module of the method in any possible implementation manner of the second aspect.
- a communication device may be a base station or UE in the above method design, or a chip provided in the base station or UE.
- the communication device includes: a processor, coupled to a memory, and configured to execute instructions in the memory to implement the method performed by the first node in the first aspect and any possible implementation manner thereof.
- the communication device further includes a memory.
- the communication device further includes a communication interface, and the processor is coupled to the communication interface.
- the communication interface may be a transceiver or an input/output interface.
- the communication interface may be an input/output interface.
- the transceiver may be a transceiver circuit.
- the input/output interface may be an input/output circuit.
- an embodiment of the present application provides a communication system, including: a base station and a UE.
- the UE is used to perform the method provided by the first aspect or any design of the first aspect.
- the base station is used to perform the method provided in the second aspect or any design of the second aspect.
- an embodiment of the present application provides a chip that is connected to a memory and used to read and execute a software program stored in the memory to implement any one of the first aspect to the second aspect or Any design method provided by any aspect.
- an embodiment of the present application provides a chip, the chip includes a processor and a memory, and the processor is configured to read a software program stored in the memory to implement any of the first aspect to the second aspect A method provided by any one aspect of one aspect or any aspect.
- an embodiment of the present application further provides a computer-readable storage medium for storing a computer used to perform the functions of any one of the first aspect to the third aspect or any one of the aspects of any design
- the software instructions include a program designed to execute any one or any design of any one of the first aspect to the second aspect.
- an embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute the first aspect or any one or any of the first aspect to the second aspect Any one of the aspects can design the method.
- Figure 1 is a schematic diagram of a wireless link detection process in an LTE system
- Figure 2 is a schematic diagram of a communication system
- FIG. 3 is a schematic diagram of an RLM method provided by this application.
- 5 is a schematic diagram of resource allocation for transmitting reported information
- FIG. 6 is a schematic diagram of a control information transmission device 600 according to an embodiment of the present application.
- control information transmission device 700 is a schematic diagram of a control information transmission device 700 according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of a communication device 800 provided by an embodiment of the present application.
- the embodiments of the present application may be applied to a communication system, such as a wireless communication system.
- a communication system such as a wireless communication system.
- the method provided in the embodiments of the present application may be applied.
- the communication system includes but is not limited to a long term evolution (LTE) system, a long term evolution-advanced (LTE-A) system, a new radio (NR) system, and 5G (5 Communication systems such as th generation) systems may also include systems such as wireless fidelity (WiFi) systems, global interoperability for microwave access (wimax) systems, and the like.
- LTE long term evolution
- LTE-A long term evolution-advanced
- NR new radio
- 5G 5G
- Communication systems such as th generation
- WiFi wireless fidelity
- wimax global interoperability for microwave access
- FIG. 2 is a schematic diagram of a communication system.
- the communication system includes a base station (Base) and terminals 1 to 6.
- terminal 1 to terminal 6 can send uplink data to the base station.
- the base station receives the uplink data sent from terminal 1 to terminal 6.
- the terminals 4 to 6 may also form a sub-communication system.
- the BS can send downlink data to terminal 1, terminal 2, terminal 5, and so on.
- Terminal 5 may also send downlink data to terminal 4 and terminal 6.
- the BS can receive uplink data of terminal 1, terminal 2, terminal 5, and so on.
- the terminal 5 may also receive the uplink data of the terminal 4 and the terminal 6.
- the base station can be a base station in a 2G, 3G or LTE system (such as Node B or eNB), a new radio controller (new radio controller, NR controller), a gNode in a 5G system (gNB), a centralized network element ( centralized), new wireless base station, radio frequency remote module, micro base station, distributed network unit (distributed unit), transmission reception point (TRP) or transmission point (transmission point (TP) or any other wireless access Equipment, the embodiments of the present application are not limited to this.
- a base station in a 2G, 3G or LTE system such as Node B or eNB
- a new radio controller new radio controller, NR controller
- gNode in a 5G system gNB
- gNB gNode in a 5G system
- gNB gNode in a 5G system
- gNB gNode in a 5G system
- gNB gNode in a 5G system
- gNB
- the terminal may be a device having a communication function with a base station and a relay node, or may be a device that provides voice and/or data connectivity to users.
- the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, or the like.
- Common terminals include, for example, mobile phones, tablet computers, notebook computers, PDAs, mobile Internet devices (MID), and wearable devices, such as smart watches, smart bracelets, and pedometers.
- the terminal may also be called user equipment (user equipment, UE).
- LAA Licensed Assisted Access
- eLAA enhanced Licensed Assisted Access
- the sender first monitors whether the unlicensed channel (or unlicensed spectrum) is idle before sending a signal. For example, the sending end judges its busy state by detecting the power of the received signal on the unlicensed spectrum. If the power of the received signal is less than a certain threshold, the unlicensed spectrum is considered to be in an idle state. The sending end can send a signal on the unlicensed spectrum, otherwise no signal is sent. This mechanism of listening before sending is called Listen Before Talk (LBT).
- LBT Listen Before Talk
- LBT LBT
- CAT4LBT also known as type1channel access procedure
- CAT2LBT also known as type2channel access procedure
- the device can access the channel after the listening channel is idle for 25us.
- the device needs to access the channel through random backoff. Specifically, according to the channel access priority (channel access priority), the device selects a corresponding random backoff number to perform backoff, and confirms that the channel is idle before accessing the channel. The device can obtain the corresponding maximum channel occupation time (maximum channel occupation time, MCOT).
- maximum channel occupation time maximum channel occupation time
- the base station After the base station seizes the channel, it can occupy the channel for downlink transmission for a period of time, and can also schedule the UE associated with it for uplink transmission.
- the size of the channel occupation time (COT) of the base station is related to the priority of the base station for LBT. The lower the priority, the longer the time it can occupy after seizing the channel.
- the maximum channel occupation time can be 10ms.
- the base station can use downlink identification signals, request/send/clear to send (RTS/CTS) signaling, and group-common physical downlink control channel (group-common physical downlink control channel, group- common PDCCH) and other methods to notify the UE of the start time and/or COT duration of the COT.
- RTS/CTS request/send/clear to send
- group-common physical downlink control channel group-common physical downlink control channel, group- common PDCCH
- the base station may configure the UE with a periodic reference signal for radio link monitoring (the reference signal may be called RLM RS).
- the reference signal may be CSI-RS, SSB, and discovery reference signal (DRS).
- DRS discovery reference signal
- the above-mentioned periodically configured reference signal may fail to be sent due to the failure of the base station LBT. Due to LBT limitation, neither the CSI-RS nor SS/PBCH blocks periodically configured by NR-U can be guaranteed to be transmitted on the preset time-frequency resources.
- This application provides a RLM for UE when the reference signal transmission is affected by LBT mechanism.
- the RLM counter/timer (N310/T310) can be updated semi-statically/dynamically through the method provided in this application.
- the UE can report RLM measurement results.
- the base station can send RLM RS status information.
- FIG. 3 is a schematic diagram of an RLM method provided by the present application. As shown in FIG. 3, the method includes the following steps.
- Step 301 The UE sends reporting information to the base station, where the reporting information includes the RLM status of the UE.
- the RLM state of the UE includes the detection result of the downlink reference signal or the state of the timer/counter corresponding to the downlink reference signal.
- the UE may send report information to the base station.
- the reported information informs the base station of the detection result of the downlink reference signal. For example, the UE uses the reported information to notify the base station of the number of downlink reference signals that have not been correctly detected or which downlink reference signals have not been correctly detected.
- the UE When the UE does not correctly detect the downlink reference signal, it will start a related timer or counter. Therefore, the UE can manage the reported information to inform the base station of the status of the timer/counter corresponding to the downlink reference signal. In this way, the base station can also learn that the UE fails to correctly detect one or more downlink reference signals.
- the downlink reference signal may be RLM RS.
- the downlink reference signal may be CSI-RS, SSB, or DRS.
- the reported information may be represented in the form of a bitmap or may be 1-bit information.
- the UE can use the bitmap to inform the base station which several downlink reference signals have not been correctly detected.
- the UE may use 1-bit information to inform the base station that there is an incorrectly received RLM RS or the base station T310 has been activated.
- the reported information can also carry the number of RLM RSs that were not received correctly.
- the base station Before sending the reported information, the base station may configure the uplink resources for the UE.
- the UE sends the reported information on the configured uplink resource.
- Step 302 The UE receives feedback information from the base station, and the feedback information includes transmission status information of one or more downlink reference signals.
- the base station informs the UE which downlink reference signals are not sent due to LBT failure through feedback information.
- the base station can feed back the transmission status of N310 downlink reference signals. If the base station always feeds back at least the transmission status of the downlink reference signal including the detection window corresponding to N310, the UE may notify the base station that at least one reference signal has not been correctly received with 1 bit.
- the feedback information can also be represented by a bitmap.
- the UE can obtain a more accurate RLM result, avoid unnecessary reconnection, thereby reducing UE energy consumption and saving system resource overhead.
- step 303 the UE updates the RLM status.
- the UE updates the timer and/or counter corresponding to the downlink reference signal. For example, the UE resets or updates N310, T310, or N311. Optionally, resetting the timer or counter means clearing the timer or counter.
- the UE can perform more accurate timing/counting and communicate according to the timing/counting results. In other words, the UE can use more accurate RLM results to avoid unnecessary reconnection.
- step 304 the UE receives configuration information from the base station.
- the configuration information carries information for updating the RLM timer/counter.
- the RLM timer/counter may be N310/T310.
- the configuration information may be a parameter. The UE can adjust the value of the RLM timer/counter using this parameter.
- step 304 may exist independently of steps 301-303. That is to say, the base station and the UE can perform step 304 separately.
- step 304 may be executed before or during steps 301-303, which is not limited as compared with this application.
- Different services have different delay requirements. Therefore, it is possible to configure timer/counter parameters for the UE for different services.
- the UE can perform timing/counting in different service scenarios more accurately.
- the reference signals configured by UEs in different groups are affected by LBT to different degrees. Therefore, the RLM parameters of UEs in different groups should also be configured differently to compensate for different levels of different reference signals.
- the base station configures the UE with periodic reference signals for radio link monitoring.
- the above-mentioned periodically configured reference signal may fail to be sent due to the failure of the base station LBT.
- 4a-4f are schematic diagrams of an RLM process provided by this application. As shown in FIG. 4a, the base station fails to send the reference signal on resource 1, resource 2, resource 3, and resource 4 due to LBT failure.
- the preset threshold of N310 configured by the base station for the UE is 4 (of course, the preset threshold may be any positive integer, and the initial value of N310 is 0), and the configured RLM RS transmission period is 20 ms. Therefore, the duration (or detection window) corresponding to N310 is 80 ms.
- the UE detects RSRP at every 20ms for transmitting RLM RS resources. When RSRP (or its corresponding PDCCH demodulation probability) is lower than the threshold, the timer N310 will be started immediately. When the UE detects that the energy of the reference signal is lower than the threshold at a resource location, the value of N310 will increase by 1. When the UE detects that the energy of the reference signal is lower than the threshold value at four consecutive resource locations, it will start a timer T310. That is, when the value of N310 reaches a preset threshold (for example, 4), T310 is started.
- a preset threshold for example, 4
- the UE may report the RLM monitoring result (or the reception of several RLM RSs before) to the base station. For example, if the UE does not receive RLM RS on four consecutive resources, it reports the result to the base station.
- the UE may report the result in the form of a bitmap. For example, the UE tells the base station in the form of a bitmap of '0000' that none of the four RLM RSs have been received correctly.
- the UE notifies the base station N310 of the number of RLM RSs that have not been received (or incorrectly received or not detected) within the detection window corresponding to the detection window (such as 80 ms) or within the time that contains the detection window (for example, the reported information carried by the UE in Figure 4a carries The number of RSRPs detected at resources 1-4 that are less than the threshold is 4).
- the UE may report the RLM monitoring result to the base station at any time after starting N310 or starting T310.
- the base station After receiving the result reported by the UE, the base station will feed back the RLM RS transmission status to the UE.
- the base station can also feed back to the UE in the form of a bitmap, and its RLM RS transmission status. For example, ‘0100’ means that only the second of the four RLM RSs was successfully sent, and the remaining three were not sent due to LBT failure. Or send '1' to the UE to indicate that there is only one RLM RS successfully sent.
- the feedback information in FIG. 4a carries the quantity 0 or ‘0000’.
- the base station may feed back the UE's transmission status of one or more RLM RSs before sending the feedback information, or the base station may feed back the UE's transmission status of one or more RLM RSs before receiving the UE's reported information.
- the feedback information in Figure 4a carries '0000' or '00001'.
- the UE After receiving the information fed back by the base station, the UE learns that the one or more RLM RSs are not correctly received because of poor link quality, but are not sent correctly due to the failure of the base station LBT. At this time, the UE may reset or update the counter and/or timer according to the information.
- the UE receives the feedback information from the base station (the
- the base station informs the UE that it has not sent the RLM RS at resource 1, resource 2, resource 3, and resource 4 due to LBT failure. If the UE does not receive the RLM RS because the LBT fails and the RLM RS is not sent, the N310 should not be started or should not be incremented. Therefore, T310 should not start. Therefore, the UE resets T310 and/or N311 when receiving the feedback information from the base station. Further, when the UE detects that the RSRP of the RLM RS is less than the threshold before receiving the feedback information from the base station, N310 is activated; otherwise, N310 is not activated. As shown in FIG.
- the UE detects that the RSRP of the RLM RS at the resource 5 is greater than or equal to the threshold, then the UE resets T310 and N311, and does not start N310.
- the UE detects that the RSRP of the RLM RS at the resource 5 is less than the threshold, then the UE resets T310 and N311, and starts N310.
- the resources for sending the reported information may correspond one-to-one to the time-frequency resources used for RLM RS transmission, or may not correspond to one-to-one.
- each RLM RS has a corresponding uplink resource for the UE to send the reported information.
- the uplink resource is earlier in time than the next scheduled sending time of the RLM RS.
- the UE may not necessarily send the report information when the N310 fails or the T310 starts. The UE continues to perform radio link monitoring according to the RLM mechanism, and sends reporting information through one or more pre-configured uplink resources when starting the N310 and/or N311 and/or T310.
- the base station may configure uplink resources for the UE in a static (indicated by RMSI/OSI/RRC signaling)/semi-static (indicated by RMSI/OSI/RRC signaling)/dynamic (indicated by DCI) method.
- the uplink resource may be dedicated to sending reporting information (for example, the uplink resource may be PRACH) or may be used to carry other information than the reporting information (for example, the uplink resource may be PUCCH).
- every two RLM RS detection positions are configured with an uplink resource for the UE to send reported information.
- the UE After receiving the feedback information after resource 3, the UE will update N310.
- the feedback information carries information about the RLM RS transmission status at resources 1-3, the UE learns that the base station has 2 RLM RSs that were not successfully transmitted due to LBT failure.
- the UE updates the value of N310 to 1.
- the feedback information carries information about the RLM RS transmission status at resources 1-2
- the UE learns that the base station has one RLM RS that was not successfully transmitted due to LBT failure.
- the UE updates the value of N310 to 2.
- the UE does not detect the RLM RS between sending the reported information and receiving the feedback information. After receiving the feedback information, the UE will reset T310 and update N310.
- the feedback information carries the information of the RLM RS transmission status at resource 1, resource 3, and resource 4, the UE learns that the base station has 3 RLM RSs that were not successfully transmitted due to LBT failure.
- the UE updates the value of N310 to 1.
- the value of N310 of UE at resource 5 is 2.
- the UE may use only 1 bit of reported information to inform the base station of its RLM status.
- the base station UE is informed that the current RLM status is that T310 has been started.
- the base station can inform the UE of the transmission status of several RLM RSs by using downlink control information (downlink control information, DCI) or radio resource control (radio resource control, RRC) signaling.
- DCI downlink control information
- RRC radio resource control
- the number of the several RLM RSs may be specified in the standard, or may be dynamically changed.
- the base station may notify the corresponding UE of the corresponding number of RLM RS transmission status for different UEs.
- a UE may use more than 1 bit of information in its reporting information to inform the base station of its RLM result and the number of RLM RS transmission statuses that it requests the base station to feed back.
- the base station sends the sending status of several RLM RSs to the UE according to the received report information.
- the number of RLM RS transmission states delivered by the base station is the same as the number of RLM RSs configured by the UE in the detection window corresponding to N310 or N311.
- the UE can send the reported information to the base station through uplink channels such as physical uplink control channel (physical uplink control channel, PUCCH), scheduling request (SR) or physical random access channel (PRACH); or
- the reporting information is transmitted through the uplink resources periodically configured by the base station to the UE; the reporting information can also be sent through authorized resources. Multiple UEs can report in an orthogonal manner.
- FIG. 5 is a schematic diagram of resource allocation for transmitting reported information. As shown in FIG. 5, different UEs may configure different resource element sets (interlace) and/or different symbols in RACH resources to simultaneously send their respective reporting information.
- the resource unit set can be in units of resource block (resource block, RB) or in sub-RB units.
- the base station can further increase the orthogonal frequency (eg, preamble, orthogonal code) according to the time-frequency position of the received report information and additional orthogonal codes (Maximum number of UEs that support simultaneous sending of reported information) to determine which UE the received reported information comes from.
- orthogonal frequency eg, preamble, orthogonal code
- additional orthogonal codes Maximum number of UEs that support simultaneous sending of reported information
- the RLM RS transmission status fed back by the base station can be carried in a public message.
- it may be carried in remaining minimum system information (remaining minimum system information, RMSI) or group-common PDCCH.
- the UE After the UE sends the reported information to the base station, it can continuously monitor the feedback that the base station may send within a preset time window.
- the length of the time window can be specified by the standard, or can be configured by the base station, and notify the UE through signaling such as RSI or RRC. If the UE does not receive feedback from the base station within the specified time window, it performs RLM according to the previous process, for example, does not update the N310/T310 timer.
- the UE when the UE has not received feedback from the base station before the T310 fails or does not detect that consecutive N311 RLM RSs are higher than the threshold, the previous wireless link will be considered invalid.
- the UE receives the system message (for example, RMSI) of the base station, and initiates random access on the specified uplink resource to retry to establish a connection with the base station.
- the above method can also be used for the UE to exchange information with the base station when the timer T310 is about to expire. For example, when the UE has not received feedback from the base station before the T310 fails or does not detect that consecutive N311 RLM RSs are higher than the preset threshold, the UE considers that the wireless link with the base station has failed. The UE will receive the system message from the base station and initiate random access on the specified uplink resource to retry to establish a connection with the base station.
- RMSI system message
- Embodiment 1 provides an interaction mechanism between a UE and a base station, which reduces the impact of LBT on the RLM mechanism and enables the UE to perform RLM more accurately.
- the base station can flexibly configure parameters based on data type and other parameters. For example: through RMSI periodic configuration, or through RRC dynamic or semi-static configuration.
- the base station can decide how to configure the N310. For example, the base station may perform configuration after N RLM RS transmissions are unsuccessful, or may refresh the configuration periodically (for example, 1 s).
- the RLM RS period can be 10ms and the N310 duration can be 100ms.
- the RLM RS period can be 10ms and the N310 duration can be 50ms.
- the base station can configure additional parameters in the RSI/RRC to the UE to indicate its updated N310/T310 parameters.
- the value of this additional parameter can be implemented by the base station and is not specified in the standard. It should be noted that the base station can configure different parameters for different UEs/different grouped UEs.
- the frequency bands or BWP are subject to different external interferences, resulting in different probability of successful RLM RS transmissions configured for different UEs.
- Frequent reconnection attempts require different RLM parameters for different UEs. E.g:
- the base station can also use the same method to update/modify the T310 or other RLM RS related timers, which will not be repeated here.
- the base station can be carried in the RMSI, OSI, or group-common PDCCH.
- the base station can configure each group/each UE individually through RRC signaling, or by scheduling the DCI indication corresponding to each/each group of UEs, or in the group-common PDCCH Instructions.
- the group-common PDCCH may contain multiple information elements, and each information element contains a UE/UE group identification (eg, UE C-RNTI, UE group RNTI) and corresponding additional parameters.
- the above additional parameter may also be an offset based on the original timer.
- Embodiment 2 provides a method for the base station to update the RLM-related timer/counter on the UE side through additional parameters, so that the timer/counter of the UE is more flexible and more adaptable to changes in the environment.
- the RLM counter (N310/N311) can be updated semi-statically or dynamically. Considering the impact of LBT on RLM RS transmission, the RLM-RS measurement window setting is more reasonable. Further, the UE performs RLM measurement result feedback and the base station sends RLM RS status indication, so that RLM RS measurement is more accurate.
- the method for the UE to judge the radio link status by RLM RS may also be used for the UE to perform radio resource management (RRM) measurement.
- the base station configures the RRM-RS for RRM measurement through the method described in the embodiment, and the UE reports according to the configuration of the base station and its measurement results.
- FIG. 6 shows a schematic block diagram of a control information transmission device 600 according to an embodiment of the present application.
- the apparatus 600 is used to execute the method performed by the base station in the foregoing method embodiments.
- the specific form of the device 600 may be a base station or a chip in the base station. This embodiment of the present application does not limit this.
- the device 600 includes the following modules.
- the receiving module 610 is configured to receive report information from the user equipment UE, where the report information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals;
- the sending module 620 is configured to send feedback information to the UE, where the feedback information includes transmission status information of the one or more downlink reference signals.
- the receiving module 610 receives the reported information from the UE.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the sending module 620 is further configured to send configuration information to the UE, where the configuration information carries parameters for updating a timer/counter corresponding to one or more downlink reference signals.
- the device 600 may further include a processing module.
- the processing module is used to process the received data and to process the data to be sent.
- FIG. 7 shows a schematic block diagram of a control information transmission device 700 according to an embodiment of the present application.
- the apparatus 700 is used to execute the method executed by the second device in the foregoing method embodiment.
- the specific form of the device 700 may be a UE or a chip in the UE. This embodiment of the present application does not limit this.
- the device 700 includes the following modules.
- the sending module 710 is configured to send reporting information to the base station, where the reporting information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals;
- the receiving module 720 is configured to receive feedback information from the base station, where the feedback information includes transmission status information of the one or more downlink reference signals.
- the sending module 710 when the UE does not detect at least one downlink reference signal or the energy of at least one detected downlink reference signal is lower than a threshold, the sending module 710 sends the reported information to the base station.
- the reported information may be represented in bitmap form or 1-bit information.
- the 1-bit information is used to indicate whether the UE has a downlink reference signal that has not been received correctly, or to indicate whether the timer/counter corresponding to the one or more downlink reference signals start up.
- the transmission state information of the one or more downlink reference signals includes that at least one downlink reference signal of the one or more downlink reference signals is not transmitted due to LBT failure.
- the apparatus 700 further includes: a processing module 730, configured to update a timer/counter corresponding to the one or more downlink reference signals.
- the receiving module 720 is further configured to receive configuration information from the base station, where the configuration information carries parameters for updating timers/counters corresponding to one or more downlink reference signals.
- processing module 730 is also used to process the received data and the data to be sent, and the sending module is used to send the data.
- an embodiment of the present application further provides a communication device 800.
- the device 800 may include: a transceiver 801.
- the transceiver 801 may further include a receiver and a transmitter.
- the transceiver 801 is used to send or receive reported information.
- the transceiver 801 can also be used to receive or send feedback information.
- the report information includes the detection result of one or more downlink reference signals of the UE or the status of the timer/counter corresponding to the one or more downlink reference signals; the feedback information includes the one or more downlink reference signals Sending status information.
- the transceiver 801 may be integrated by a transmitter and a receiver. In other embodiments, the transmitter and receiver may also be independent of each other.
- the device 800 may further include a processor 802, a memory 803, and a communication unit 804.
- the transceiver 801, the processor 802, the memory 803, and the communication unit 804 are connected through a bus.
- the data to be sent (for example, PDSCH) or signaling (for example, PDCCH) is adjusted by the transceiver 801 to output samples and generate a downlink signal, and the downlink signal is transmitted to the above embodiment via the antenna Terminal.
- the antenna receives the uplink signal transmitted by the terminal in the above embodiment, and the transceiver 801 adjusts the signal received from the antenna and provides input samples.
- service data and signaling messages are processed, for example, data to be transmitted is modulated, and SC-FDMA symbol generation is performed. These units are processed according to the wireless access technology adopted by the wireless access network (for example, the access technology of LTE, 5G and other evolved systems).
- the processor 802 is also used to control and manage the device 800 to perform the processing performed by the base station or the UE in the foregoing method embodiment. Specifically, the processor 802 is used to process the received information and to process the information to be sent. As an example, the processor 802 is used to support the device 800 to execute the processing procedure of the device 800 involved in FIGS. 2 to 5. In an unauthorized scenario, the processor 802 also needs the control device 800 to perform channel interception for data or signaling transmission. Exemplarily, the processor 802 performs channel interception on the signal received from the transceiver device or the antenna through the transceiver 801, and controls the signal to be transmitted via the antenna to preempt the channel. In different embodiments, the processor 802 may include one or more processors, for example, including one or more central processing units (Central Processing Unit, CPU), the processor 802 may be integrated into the chip, or may be the chip itself .
- CPU Central Processing Unit
- the memory 803 is used to store relevant instructions and data, and program codes and data of the device 800.
- the memory 603 includes but is not limited to random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), and erasable programmable read-only memory (Erasable Programmable Read Only Memory (EPROM), or Portable Read-Only Memory (CD-ROM).
- the memory 803 is independent of the processor 802. In other embodiments, the memory 803 may also be integrated in the processor 802.
- the apparatus 800 shown in FIG. 8 may be used to perform the method performed by the base station or the UE in the above method embodiments.
- the apparatus 800 shown in FIG. 8 may be used to perform the method performed by the base station or the UE in the above method embodiments.
- implementation methods and technical effects that are not described in detail in the apparatus 800 shown in FIG. 8, refer to the above Relevant description of method embodiments.
- FIG. 8 only shows a simplified design of the base station or the UE.
- a base station or UE may include any number of transmitters, receivers, processors, memories, etc., and all base stations or UEs that can implement this application are within the scope of protection of this application.
- the communication system includes a base station or UE.
- the base station may be the communication device shown in FIG. 6 or the device shown in FIG. 8.
- the UE may be the communication device shown in FIG. 7 or the device shown in FIG. 8.
- embodiments of the present application also provide a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, causes the computer to perform the implementation shown in FIGS. 2 to 5 Example method.
- embodiments of the present application also provide a computer-readable medium, the computer-readable interpretation stores program code, and when the program code runs on a computer, the computer is caused to perform the implementation shown in FIGS. 2 to 5 Example method.
- an embodiment of the present application further provides a chip.
- the chip may be a processor for implementing the method in the above method embodiments. Further, the chip is connected to a memory, and is used to read and execute the software program stored in the memory to implement the method in the embodiments shown in FIGS. 2 to 5.
- an embodiment of the present application provides a chip including a processor and a memory, and the processor is used to read a software program stored in the memory to implement the implementation shown in FIGS. 2 to 5 Example method.
- These computer program instructions may also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing.
- the computer program product includes one or more computer instructions.
- the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
- the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more available medium integrated servers, data centers, and the like.
- the usable medium may be a magnetic medium (eg, floppy disk, hard disk, magnetic tape), optical medium (eg, DVD), or semiconductor medium (eg, solid state disk (SSD)), or the like.
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Abstract
Description
Claims (27)
- 一种控制信息的传输方法,其特征在于,所述方法包括:用户设备UE向基站发送上报信息,所述上报信息包括所述UE的一个或多个下行参考信号的检测结果或一个或多个下行参考信号对应的计时器/计数器的状态;所述UE从所述基站接收反馈信息,所述反馈信息包括所述一个或多个下行参考信号的发送状态信息。
- 根据权利要求1所述的方法,其特征在于,当所述UE未检测至少一个下行参考信号或至少一个检测到的下行参考信号的能量低于门限值时,所述UE向所述基站发送上报信息。
- 根据权利要求1或2所述的方法,其特征在于,所述上报信息可以用位图形式表征或是1比特信息。
- 根据权利要求3所述的方法,其特征在于,所述1比特信息用于指示所述UE是否存在未正确接收的下行参考信号,或,用于指示所述一个或多个下行参考信号对应的计时器/计数器是否启动。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述一个或多个下行参考信号的发送状态信息包括所述一个或多个下行参考信号中至少一个下行参考信号是由于LBT失败而没有被发送的。
- 根据权利要求1至5任一项所述的方法,其特征在于,所述方法还包括:所述UE更新所述一个或多个下行参考信号对应的计时器/计数器。
- 根据权利要求1至6任一项所述的方法,其特征在于,所述方法还包括:所述UE从所述基站接收配置信息,所述配置信息携带用于更新一个或多个下行参考信号对应的计时器/计数器的参数。
- 一种控制信息的传输方法,其特征在于,所述方法包括:基站从用户设备UE接收上报信息,所述上报信息包括所述UE的一个或多个下行参考信号的检测结果或一个或多个下行参考信号对应的计时器/计数器的状态;所述基站向所述UE发送反馈信息,所述反馈信息包括所述一个或多个下行参考信号的发送状态信息。
- 根据权利要求8所述的方法,其特征在于,当所述UE未检测至少一个下行参考信号或至少一个检测到的下行参考信号的能量低于门限值时,所述基站从所述UE接收上报信息。
- 根据权利要求8或9所述的方法,其特征在于,所述上报信息可以用位图形式表征或是1比特信息。
- 根据权利要求10所述的方法,其特征在于,所述1比特信息用于指示所述UE是否存在未正确接收的下行参考信号,或,用于指示所述一个或多个下行参考信号对应的计时器/计数器是否启动。
- 根据权利要求8至11任一项所述的方法,其特征在于,所述一个或多个下行参考信号的发送状态信息包括所述一个或多个下行参考信号中至少一个下行参考信号是由于LBT失败而没有被发送的。
- 根据权利要求8至12任一项所述的方法,其特征在于,所述方法还包括:所述基站向所述UE发送配置信息,所述配置信息携带用于更新一个或多个下行参考信号对应的计时器/计数器的参数。
- 一种控制信息的传输装置,其特征在于,所述装置包括:发送模块,用于向基站发送上报信息,所述上报信息包括UE的一个或多个下行参考信号的检测结果或一个或多个下行参考信号对应的计时器/计数器的状态;接收模块,用于从所述基站接收反馈信息,所述反馈信息包括所述一个或多个下行参考信号的发送状态信息。
- 根据权利要求14所述的装置,其特征在于,当所述UE未检测至少一个下行参考信号或至少一个检测到的下行参考信号的能量低于门限值时,所述发送模块向所述基站发送上报信息。
- 根据权利要求14或15所述的装置,其特征在于,所述上报信息可以用位图形式表征或是1比特信息。
- 根据权利要求16所述的装置,其特征在于,所述1比特信息用于指示所述UE是否存在未正确接收的下行参考信号,或,用于指示所述一个或多个下行参考信号对应的计时器/计数器是否启动。
- 根据权利要求14至17任一项所述的装置,其特征在于,所述一个或多个下行参考信号的发送状态信息包括所述一个或多个下行参考信号中至少一个下行参考信号是由于LBT失败而没有被发送的。
- 根据权利要求14至18任一项所述的装置,其特征在于,所述装置还包括:处理模块,用于更新所述一个或多个下行参考信号对应的计时器/计数器。
- 根据权利要求14至19任一项所述的装置,其特征在于,所述接收模块还用于从所述基站接收配置信息,所述配置信息携带用于更新一个或多 个下行参考信号对应的计时器/计数器的参数。
- 一种控制信息的传输装置,其特征在于,所述装置包括:接收模块,用于从用户设备UE接收上报信息,所述上报信息包括所述UE的一个或多个下行参考信号的检测结果或一个或多个下行参考信号对应的计时器/计数器的状态;发送模块,用于向所述UE发送反馈信息,所述反馈信息包括所述一个或多个下行参考信号的发送状态信息。
- 根据权利要求21所述的装置,其特征在于,当所述UE未检测至少一个下行参考信号或至少一个检测到的下行参考信号的能量低于门限值时,所述接收模块从所述UE接收上报信息。
- 根据权利要求21或22所述的装置,其特征在于,所述上报信息可以用位图形式表征或是1比特信息。
- 根据权利要求23所述的装置,其特征在于,所述1比特信息用于指示所述UE是否存在未正确接收的下行参考信号,或,用于指示所述一个或多个下行参考信号对应的计时器/计数器是否启动。
- 根据权利要求21至24任一项所述的装置,其特征在于,所述一个或多个下行参考信号的发送状态信息包括所述一个或多个下行参考信号中至少一个下行参考信号是由于LBT失败而没有被发送的。
- 根据权利要求21至25任一项所述的装置,其特征在于,所述发送模块还用于向所述UE发送配置信息,所述配置信息携带用于更新一个或多个下行参考信号对应的计时器/计数器的参数。
- 一种通信装置,其特征在于,包括:处理器,用于与存储器耦合,执行所述存储器中的指令,以实现如权利要求1至13中任一项所述的方法。
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EP3910988A1 (en) | 2021-11-17 |
US11902814B2 (en) | 2024-02-13 |
EP3910988B1 (en) | 2024-06-12 |
CN111436054B (zh) | 2022-05-24 |
BR112021013695A2 (pt) | 2021-09-21 |
CN111436054A (zh) | 2020-07-21 |
EP3910988A4 (en) | 2022-03-23 |
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