WO2021062675A1 - Procédé et dispositif de communication sans fil - Google Patents

Procédé et dispositif de communication sans fil Download PDF

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Publication number
WO2021062675A1
WO2021062675A1 PCT/CN2019/109544 CN2019109544W WO2021062675A1 WO 2021062675 A1 WO2021062675 A1 WO 2021062675A1 CN 2019109544 W CN2019109544 W CN 2019109544W WO 2021062675 A1 WO2021062675 A1 WO 2021062675A1
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WIPO (PCT)
Prior art keywords
configuration information
cell
terminal
resource pool
information
Prior art date
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PCT/CN2019/109544
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English (en)
Chinese (zh)
Inventor
彭文杰
王君
戴明增
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980100158.7A priority Critical patent/CN114391269B/zh
Priority to PCT/CN2019/109544 priority patent/WO2021062675A1/fr
Publication of WO2021062675A1 publication Critical patent/WO2021062675A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • This application relates to the field of communication technology, and in particular to wireless communication methods and equipment.
  • SI system information
  • SIB system information block
  • the minimum SI may include the Master Information Block (MIB) and/or SIB1, where MIB includes the system frame number, and SIB1 includes information used to evaluate whether the UE can access the cell; other SIs, such as SIB3 , SIB4, SIB5, etc.
  • MIB Master Information Block
  • SIB1 includes information used to evaluate whether the UE can access the cell
  • SIB3 includes the system frame number
  • SIB4 includes information used to evaluate whether the UE can access the cell
  • SIB3 such as SIB3 , SIB4, SIB5, etc.
  • SIB4 SIB5
  • the network device can always broadcast or send based on the request of the terminal, depending on the implementation of the network device.
  • the terminal in the idle or inactive state performs sidelink (Sidelink, SL) communication.
  • Sidelink Sidelink
  • the network equipment always broadcasts part of the SI (such as MIB and/or SIB1), when the SI (other SI) related to the SL communication that the terminal needs to carry out needs to be broadcast by the access network equipment when the terminal requests it, even if the terminal camps in the target cell, due to the need
  • the terminal first makes a request to the target cell before the target cell sends the SL-related SIB, so that the terminal cannot obtain the SL communication resources in time, causing the SL communication to be interrupted.
  • the wireless communication method and device provided by the present application can solve the problem of the SL communication terminal in the cell reselection process under the on-demand mechanism.
  • a wireless communication method which includes: when the terminal camps on a first cell, and the terminal does not obtain the side link SL configuration information of the first cell, the terminal according to the first SL configuration information Obtain the first SL resource.
  • the source serving cell of the terminal is the second cell, because the terminal is mobile and camps on the first cell.
  • the first SL configuration information is current SL configuration information.
  • the first SL configuration information is SL configuration information of the second cell.
  • the second cell does not support the SL communication required by the terminal, or the terminal does not find a suitable cell to camp on before camping on the first cell, that is, when there is no source serving cell, the first SL configuration
  • the information is pre-configured SL configuration information, where the pre-configured SL configuration information may be dynamically pre-configured by the core network device, or may be pre-stored in the terminal or the terminal chip.
  • the SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the understandable first SL configuration information is configuration information of the source serving cell or pre-configured configuration information.
  • the first SL configuration information includes resource pool configuration information, which represents resource pool configuration information or pre-configured resource pool configuration information of the second cell.
  • the first cell includes synchronization configuration information, which represents synchronization configuration information of the first cell.
  • the method further includes: in a case where the terminal obtains the SL configuration information of the first cell, the terminal obtains the second SL resource according to the SL configuration information of the first cell.
  • the SL configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information.
  • the terminal can directly use the abnormal resource pool indicated by the abnormal resource pool configuration information without monitoring the configuration information of the abnormal resource pool.
  • Other resource pool configuration information such as sending resource pool configuration information or receiving resource pool configuration information, requires the terminal to monitor first and then obtain resources based on the monitoring results.
  • the sensing refers to that after obtaining the SL transmission resource pool indicated by the SL configuration information, the terminal monitors the transmission resource pool, such as monitoring the signal strength on the resource, and judging whether the SL resource is available.
  • the terminal When the terminal confirms that the SL resource can be used, that is, when the sensing result is that the monitored SL resource is available, the terminal can use the SL resource to send SL data, and no longer use the abnormal resource pool.
  • the obtained sensing results are considered to be available for monitoring resources.
  • the terminal when the SL configuration information of the first cell includes the transmission resource pool configuration information of the first cell, and the SL configuration information of the second cell includes the transmission resource pool configuration information of the second cell, the terminal camps on the first cell, However, if the SL configuration information of the first cell is not obtained, the terminal obtains the first SL resource after obtaining the sensing result of the sending resource pool of the second cell according to the SL configuration information of the second cell. In the case of the SL configuration information of the first cell, the terminal obtains the second SL resource after acquiring the sensing result of the sending resource pool of the first cell according to the sending resource pool configuration information of the first cell.
  • the terminal In the case where the SL configuration information includes abnormal resource pool configuration information, for example, the first SL configuration information includes abnormal resource pool configuration information: the terminal camps on the first cell, but the SL configuration information of the first cell is not obtained Next, the terminal obtains the third SL resource according to the configuration information of the abnormal resource pool, and when the terminal obtains the SL configuration information of the first cell, the terminal obtains the second SL resource according to the SL configuration information of the first cell.
  • the SL configuration information of the first cell includes abnormal resource pool configuration information and sending resource pool configuration information. After obtaining the SL configuration information of the first cell, the terminal may first obtain the fourth SL resource according to the abnormal resource pool configuration information until the terminal After obtaining the monitoring result of the sending resource pool according to the sending resource pool configuration information, the second SL resource is acquired.
  • the SL configuration information includes abnormal resource pool configuration information, it is also applicable to the method described in the embodiment of the present application. Even if there is an abnormal resource pool, the resource pool used by the terminal for SL communication is too high. After this change, the SL communication will still not be interrupted.
  • the SL configuration information includes resource pool configuration information
  • the terminal does not obtain the resource pool configuration information of the first cell (target cell) (that is, the SL configuration information of the first cell)
  • it can be based on
  • the first resource pool configuration information (that is, the first SL configuration information or the current SL configuration information) acquires the first SL resource.
  • the terminal obtains the resource pool configuration information of the first cell (SL configuration information of the first cell)
  • it can obtain the second SL resource according to the resource pool configuration information of the first cell (SL configuration information of the first cell) .
  • the first SL resource and the second SL resource may be the same resource or different resources.
  • the terminal when the resource pool configuration information includes sending resource pool configuration information or receiving resource pool configuration information, the terminal not only needs to obtain the resource pool configuration information, but also obtain the monitoring result of the resource pool corresponding to the resource pool configuration information , The terminal can obtain the SL resource according to the resource pool configuration information.
  • the terminal may perform synchronization according to the target cell when the terminal is camped on the target cell (the first cell). Or, when the terminal is camping on the target cell and the synchronization source information of the target cell is not obtained, it can choose to synchronize with the first cell or the second cell according to the synchronization source information of the source serving cell (second cell) .
  • the source serving cell the first The DFN timing parameters of the second cell are synchronized with the GNSS.
  • the terminal can synchronize with the GNSS according to the DFN timing parameters of the target cell (the first cell).
  • the terminal in the case that the SL configuration information includes the SLRB configuration information, in the case that the terminal camps on the target cell and does not obtain the SLRB configuration information of the target cell, it can be based on the source serving cell (second cell).
  • the first SLRB is established by the SLRB configuration information of ).
  • the terminal may establish a second SLRB according to the SLRB configuration information of the target cell (the first cell), and delete the previously established first SLRB.
  • the terminal when the terminal camps on the first cell and does not obtain the SL configuration information of the first cell (that is, the target cell), it can continue to use the first SL configuration information, so that the reliability of SL communication can be effectively ensured and the solution can be efficiently solved.
  • a wireless communication method where a terminal resides in a second cell, including: the terminal receives at least one second side uplink SL configuration information from the second cell, and the second SL configuration information includes a neighboring cell identifier Information and SL configuration information corresponding to the adjacent cell identification information.
  • the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the related description of the SL configuration information, resource pool configuration information, SLRB configuration information, and synchronization configuration information is the same as the description of the first aspect and its implementation manners above, and will not be repeated here.
  • the identification information of the neighboring cell may include the physical cell identification PCI, or other cell-related identification information, such as the cell global identification CGI or the cell index.
  • PCI Physical cell identification
  • the first SL configuration information corresponding to the first neighboring cell PCI1 is SL configuration 1
  • the second SL configuration information corresponding to the second neighboring cell PCI2 is SL configuration 2
  • the third neighboring cell PCI3 corresponds to The third SL configuration information is SL configuration 3 and so on.
  • At least one second SL configuration information is sent through system broadcast, and the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information may be in the same SIB. Broadcasting can also be broadcast in different SIBs, which is not limited in this application.
  • At least one second SL configuration information is sent to the terminal through RRC signaling, and the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information may be in the same One RRC signaling is sent to the terminal, or it can be sent to the terminal in different RRC signaling, which is not limited in this application.
  • the terminal before the terminal camps on the first neighboring cell, the terminal obtains the first SL resource according to the first SL configuration information.
  • the first SL configuration information is SL configuration information of the second cell.
  • the first SL configuration information is pre-configuration (Pre-configuration) SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device or pre-stored in the terminal chip. .
  • the terminal when the terminal camps on the first neighboring cell, the terminal obtains the second SL resource according to the second SL configuration information.
  • the specific time for the terminal to obtain the second SL resource according to the second SL configuration information may be determined according to the terminal implementation.
  • the terminal may obtain the second SL resource according to the second SL configuration information when camping on the first neighboring cell. Two SL resources.
  • the terminal may also obtain the second SL resource according to the second SL configuration information when receiving the second SL configuration information. This application does not limit the specific time for acquiring the second SL resource according to the second SL configuration information.
  • the second SL configuration information includes abnormal resource pool configuration information
  • the terminal camps on the first neighboring cell without obtaining the sending resource pool of the first neighboring cell Before monitoring the result, the terminal obtains the third SL resource according to the abnormal resource pool configuration information, where the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.
  • the second SL configuration information includes abnormal resource pool configuration information of the first neighboring cell
  • the terminal may obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell.
  • the second SL resource is acquired according to the sending resource pool configuration information of the first neighboring cell.
  • the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the sending resource pool configuration information of the first neighboring cell.
  • the terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell.
  • the third SL resource after acquiring the sending resource pool configuration information of the first neighboring cell and acquiring the sensing result of the sending resource pool of the first neighboring cell, then according to the sending resource pool configuration information of the first neighboring cell Obtain the second SL resource.
  • the terminal when the terminal is in the second cell (the source serving cell), it can obtain the second SL configuration information of the neighboring cell from the second cell, and reselect the target neighboring cell (that is, the target cell, such as In the case of the first neighboring cell), the second SL resource is obtained based on the second SL configuration information of the target cell obtained by the terminal in the source serving cell, so that the second SL resource of the target cell can be obtained in time (or in advance).
  • the SL configuration information is used to obtain the second SL resource, and then the SL communication can be continued, which also solves the problem of the interruption of the SL communication of the terminal during cell reselection.
  • a wireless communication method includes: a first access network device sends at least one second side uplink SL configuration information, the second SL configuration information includes adjacent cell identification information and adjacent cell identification information Corresponding SL configuration information; where the second SL configuration information is used to configure a second SL resource for the terminal, including one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the SL configuration information, resource pool configuration information, SLRB configuration information, or synchronization configuration information is the same as the description of the first aspect and its implementation manners above, and will not be repeated here.
  • the adjacent cell identifier is the same as the description of the second aspect and its implementation manners above, and will not be repeated here.
  • the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly obtain the SL configuration information of the target cell.
  • the continuous broadcast refers to continuous uninterrupted broadcast, or called continuous broadcast.
  • the first access network device broadcasts the second SL configuration information on demand, which can reduce air interface resources.
  • the first access network device may also broadcast the SL configuration information of the second cell.
  • the first access network device always broadcasts the SL configuration information of the second cell, or the first access network device broadcasts the SL configuration information of the second cell on demand, where the SL configuration information of the second cell is the same as the second SL configuration
  • the information (SL configuration information corresponding to neighboring cells) can be sent together, for example in the same SIB.
  • the SL configuration information of the second cell and the second SL configuration information can be sent separately, for example, sent in different SIBs, which is not limited in this application.
  • the method further includes: before the first access network device sends the second SL configuration information to the terminal, the first access network device obtains the second SL configuration information from the neighboring cell.
  • the method further includes:
  • the first access network device sends the SL configuration information of the second cell to the second access network device, and the second cell is the cell where the terminal currently resides.
  • the serving cell can not only broadcast the second SL configuration information of the neighboring cell to the terminal, of course, it can also broadcast the SL configuration information of the cell to the terminal, so that the terminal can learn the target cell after the reselection before the cell reselection
  • the second SL configuration information of the terminal ensures the continuity of the SL communication of the terminal in the cell reselection process.
  • a wireless communication device or device including a processor, the processor is coupled with a memory, the memory is configured to store instructions, and the processor is configured to execute the instructions to enable the wireless communication
  • the device executes the method described in any one of the foregoing first aspect and implementation manners of the first aspect.
  • a wireless communication device or device including: a processor coupled with a memory, the memory is configured to store instructions, and the processor is configured to execute the instructions to enable the wireless communication
  • the device executes the method described in any one of the above second aspect and implementation manners of the second aspect.
  • a wireless communication device or device including a processor, the processor is coupled with a memory, the memory is configured to store instructions, and the processor is configured to execute the instructions to enable the wireless communication
  • the device executes the method described in any one of the foregoing third aspect and implementation manners of the third aspect.
  • a computer-readable storage medium including computer-readable instructions.
  • the communication device reads and executes the computer-readable instructions, the communication device executes the first aspect and the implementation of the first aspect. Any of the methods described.
  • a computer-readable storage medium including computer-readable instructions.
  • a communication device reads and executes the computer-readable instructions, the communication device executes the above second aspect and implementation of the second aspect. Any of the methods described.
  • a computer-readable storage medium including computer-readable instructions.
  • the communication device reads and executes the computer-readable instructions, the communication device executes the above third aspect and the implementation of the third aspect. Any of the methods described.
  • a computer program product which includes computer-readable instructions.
  • a communication device reads and executes the computer-readable instructions, the communication device executes any of the above first aspect and the implementation manners of the first aspect.
  • One described method One described method.
  • a computer program product which includes computer-readable instructions.
  • a communication device reads and executes the computer-readable instructions, the communication device executes the above second aspect and the implementation manners of the second aspect. Any of the methods described.
  • a computer program product including computer-readable instructions.
  • the communication device reads and executes the computer-readable instructions, the communication device executes the foregoing third aspect and the implementation manners of the third aspect Any of the methods described.
  • a communication system in a thirteenth aspect, includes the device of any one of the foregoing fourth aspect and the fourth aspect, and/or the device of any one of the fifth aspect and the fifth aspect.
  • the system may also include a remote radio frequency unit, or a baseband processing unit, or a core network device.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
  • Figure 2 is a partial schematic diagram of Figure 1;
  • FIG. 3 is a schematic diagram of a wireless communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of the architecture of the method in FIG. 4;
  • FIG. 6 is a schematic flowchart of another wireless communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of the architecture of the method in FIG. 6;
  • FIG. 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a wireless communication device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 16 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a) or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • At least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the embodiments of the present application use words such as "first" and "second” to distinguish the same items or similar items that have substantially the same function and effect.
  • the first message and the second message are only for distinguishing different messages, and the sequence of them is not limited.
  • words such as “first” and “second” do not limit the number and execution order.
  • LTE long time evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • PLMN public land mobile network
  • 5G communication system 5G communication system
  • future communication systems such as: long time evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) ) System, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, 5G communication system And future communication systems.
  • LTE long time evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • PLMN public land mobile network
  • 5G communication system 5G communication system
  • the technical solution of this application may include multiple application scenarios, for example, vehicle to everything (V2X), vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle and infrastructure (vehicle to infrastructure, V2I), machine to machine (M2M), device to machine (D2M), device to device (D2D), macro and micro communications, enhanced mobile Internet ( Enhance mobile broadband (eMBB), ultra-reliable & low latency communication (uRLLC), and massive machine type communication (mMTC) and other scenarios.
  • V2X vehicle to everything
  • V2V vehicle to vehicle
  • V2P vehicle to pedestrian
  • V2I vehicle to infrastructure
  • M2M machine to machine
  • D2M device to machine
  • D2D device to device
  • macro and micro communications macro and micro communications
  • enhanced mobile Internet Enhance mobile broadband (eMBB), ultra-reliable & low latency communication (uRLLC), and massive machine type communication (mMTC) and other scenarios.
  • eMBB Enhance mobile broadband
  • uRLLC ultra-reliable
  • the network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.
  • the method provided is applied to a New Radio (NR) system or a 5G network as an example for description.
  • NR New Radio
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
  • the communication system includes: an access network device 10 and at least two terminals.
  • two terminals are taken as an example for illustration.
  • the two terminals are terminal 20 and terminal 30, respectively. Both terminal 20 and terminal 30 can communicate with each other.
  • the access network 10 communicates.
  • FIG. 1 only shows that the terminal 20 communicates with the access network 10, and the terminal 20 can also communicate with the terminal 30.
  • the access network device 10 can also directly communicate with the terminal 30. This is only an example, and this application does not limit this.
  • the communication system shown in FIG. 1 may further include: a core network device 40.
  • the access network device 10 may be connected to the core network device.
  • the core network device 40 may be a 4G core network (for example, Evolved Packet Core (EPC)) device or a 5G core network (5G Core, 5GC) device, or a core network device in various future communication systems.
  • EPC Evolved Packet Core
  • 5G Core 5G Core
  • the access network device 10 may be the next generation node B (gNB) in the NR system, and the terminal 20 may be a terminal that performs information transmission with the gNB.
  • the gNB is connected to the 5GC through the NG interface.
  • the access network device 10 may also be a third generation partnership project (3rd generation partnership project, 3GPP) protocol access network device or base station, or may be a non-3GPP protocol access network device or base station.
  • 3GPP third generation partnership project
  • the wireless communication transmission link between the terminal 20 and the terminal 30 may be a side link (Sidelink, SL), for example.
  • the terminal 20 and the terminal 30 may be devices with wireless communication functions, and may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on the water (such as ships, etc.). It can also be deployed in the air (for example, on airplanes, balloons, satellites, etc.).
  • the terminal is also called user equipment (UE), mobile station (MS), mobile terminal (MT), and terminal equipment, etc., which provide users with voice and/or data connectivity. equipment.
  • terminals include handheld devices with wireless connection functions, vehicle-mounted devices, and so on.
  • the terminal can be: mobile phone (mobile phone), tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device (such as smart watch, smart bracelet, pedometer, etc.), In-vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (for example, refrigerators, TVs, air conditioners, electric meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, Wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flying equipment (for example, Intelligent robots, hot air balloons, drones, airplanes), etc.
  • In-vehicle equipment for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.
  • VR virtual reality
  • AR augmented reality
  • the terminal is a terminal device that often works on the ground, such as a vehicle-mounted device.
  • chips deployed in the above-mentioned devices such as System-On-a-Chip (SOC), baseband chips, etc., or other chips with communication functions may also be referred to as terminals.
  • SOC System-On-a-Chip
  • baseband chips etc.
  • other chips with communication functions may also be referred to as terminals.
  • the terminal 20 or the terminal 30 may be a vehicle with corresponding communication functions, or a vehicle-mounted communication device, or other embedded communication devices, and may also be a user's handheld communication device, including a mobile phone, a tablet computer, and the like.
  • the terminal 20 and the terminal 30 may also include wearable devices.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.
  • the access network device 10 is an entity that can be used in conjunction with the terminal 20 or the terminal 30 to transmit or receive signals.
  • it can be an access point (Access Point, AP) in WLAN, an evolved base station (evolved Node B, eNB, or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device And the network equipment in the future 5G network or the access network equipment in the future evolved PLMN network.
  • the access network equipment provides services to the cell
  • the terminal uses transmission resources (for example, time domain resources, or frequency domain resources, or time-frequency resources) used by the cell and the access network equipment To communicate.
  • transmission resources for example, time domain resources, or frequency domain resources, or time-frequency resources
  • different cells can belong to the same access network device, that is, one access network device can provide services for multiple different cells, or different cells can also belong to different access network devices. , That is, different access network devices provide services for different cells.
  • the terminal 20 in the idle state or the inactive state has SL communication with the terminal 30.
  • the terminal receives the adjacent cell broadcast SI (Including SIB1), select a suitable target cell to camp on according to the quality of service of the neighboring cells. For example, the terminal selects the neighboring cell with the strongest SI as the target cell.
  • SI including SIB1
  • the first cell is the target of the terminal 20 Community.
  • the cell currently served by the terminal 20 is the second cell, or the source serving cell of the terminal 20 is the second cell.
  • the first cell and the second cell may belong to the same access network device, such as the access network device 10 shown in FIG. 1, or they may belong to different access network devices, which is not limited in this application.
  • the access network equipment will only broadcast the necessary SI (for example, SIB1) for the terminal to access
  • SIB1 the necessary SI related to the SL communication that it needs
  • the terminal when the terminal finds the SI related to the SL communication that it needs (SL-related SIB, it can be
  • the terminal will learn that the target cell supports SL communication according to the SI (such as SIB1) broadcast by the target cell.
  • the SIB1 includes an indication of the SL-related SIB.
  • the terminal can also learn the random access resource corresponding to the SL-related SIB (other SIBs, such as other SIBs except SIB1), and then the terminal triggers random access (such as sending a preamble to the first cell), and instructs the first cell to send The required SL-related SIB.
  • the terminal After the terminal receives the SL-related SI (SIB), it can obtain the required SL resource configuration, and then can continue SL communication.
  • SIB SL-related SI
  • the terminal cannot obtain it in time after it resides in the target cell.
  • the relevant resources of the SL of the target cell will cause the SL communication to be interrupted.
  • the terminal 20 when the terminal 20 reselects to the first cell at time T1, or when it camps on the first cell at time T1, in the communication system under the on-demand mechanism, the terminal needs to first base on the received first cell.
  • the SI broadcasted by the cell such as SIB1
  • obtains the random access resource information corresponding to the SIB related to SL communication such as SIB3 information
  • the random access resource corresponding to the random access resource information such as SIB3, Therefore, the terminal 20 obtains the SL resource configuration information of the first cell at the subsequent time T3, that is, obtains the required SL resource configuration information. It can be seen from the above that during the period from T1 to T3, even if the terminal 20 has camped in the first cell, the SL communication is interrupted because the terminal 20 cannot obtain the SL configuration information of the first cell in time.
  • the wireless communication method and device provided in this application can solve the above problem that the terminal stays in the target cell but cannot obtain the SL configuration information of the target cell in time, which causes the SL communication to be interrupted.
  • the source serving cell of the terminal is the second cell. Since the terminal is mobile and camps on the first cell, it is a schematic diagram of a wireless communication method provided by an embodiment of this application.
  • the terminal In a case where the terminal camps on the first cell and the terminal does not obtain the side link SL configuration information of the first cell, the terminal obtains the first SL resource according to the first SL configuration information.
  • the first SL configuration information is current SL configuration information.
  • the first SL configuration information is SL configuration information of the second cell.
  • the second cell does not support the SL communication required by the terminal, or the terminal does not find a suitable cell to camp on before camping on the first cell, that is, when there is no source serving cell, the first SL configuration
  • the information is pre-configured SL configuration information, where the pre-configured SL configuration information may be dynamically pre-configured by the core network device, or may be pre-stored in the terminal chip.
  • the SL configuration information includes one or more of the following: resource pool configuration information, sidelink radio bearer (SLRB) configuration information, or synchronization configuration information.
  • SLRB sidelink radio bearer
  • the first SL configuration information includes sending resource pool configuration information, which means that the current configuration information includes sending source serving cell or pre-configured resource pool configuration information.
  • the SL configuration information of the first cell includes abnormal resource pool configuration information, indicating abnormal resource pool configuration information of the first cell, and the SL configuration information of the first cell refers to SL configuration information related to the first cell.
  • the resource pool configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information.
  • the SLRB configuration information includes the configuration information of the service data adaptation protocol (SDAP) corresponding to the SLRB and/or the configuration information of the packet data convergence protocol (PDCP) and/or the wireless link control ( Radio link control (RLC) configuration information and/or media access control (media access control, MAC) configuration information.
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC Radio link control
  • MAC media access control
  • the synchronization configuration information includes synchronization source information, and/or other synchronization information, such as cyclic prefix (CP) length.
  • the fact that the terminal fails to obtain the side link SL configuration information of the first cell means that under the on-demand mechanism, even if the terminal has camped in the first cell, the terminal needs to request the required SL resources first. Further obtaining the configuration information of the first cell SL, for example, between the time T1 and the time T3 shown in FIG. 3, the terminal did not obtain the SL configuration information of the first cell.
  • the terminal when the terminal obtains the SL configuration information of the first cell, for example, at time T3 and after time T3 shown in FIG. 3, the terminal obtains the second SL resource according to the SL configuration information of the first cell.
  • the SL configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information as an example.
  • the terminal can directly use the abnormal resource pool indicated by the abnormal resource pool configuration information without monitoring (sensing) abnormal resource pool configuration information.
  • Other resource pool configuration information such as sending resource pool configuration information or receiving resource pool configuration information, requires the terminal to monitor first and then obtain resources based on the monitoring results.
  • the sensing described in this application means that after the terminal obtains the SL transmission resource pool indicated by the SL configuration information, it monitors the transmission resource pool, such as monitoring the signal strength on the resource, and judging whether the SL resource is available .
  • the terminal confirms that the SL resource can be used that is, when the sensing result is that the monitored SL resource is available
  • the terminal can use the SL resource to send SL data, and no longer use the abnormal resource pool.
  • the obtained monitoring results are considered to be available for monitoring resources.
  • the SL configuration information of the first cell includes the transmission resource pool configuration information of the first cell
  • the SL configuration information of the second cell includes the transmission resource pool configuration information of the second cell.
  • the terminal obtains the sensing result of the transmission resource pool of the second cell according to the configuration information of the transmission resource pool of the second cell, thereby obtaining the first SL resource.
  • time T3 (which may include time T3)
  • the terminal obtains the first SL resource according to the After the sending resource pool configuration information of a cell obtains the sensing result of the sending resource pool of the first cell, the second SL resource is obtained.
  • the SL configuration information of the second cell also includes the configuration information of the abnormal resource pool of the second cell.
  • time T1 (which may include time T1)
  • the terminal first starts according to the abnormal resource pool of the second cell.
  • the configuration information acquires the third SL resource.
  • the third SL resource is acquired according to the sending resource pool information of the first cell.
  • Two SL resources are used to obtain the fourth SL resource, and this application does not strictly limit the SL configuration information used at time T1.
  • the resources represented by the first SL resource, the second SL resource, the third SL resource, and the fourth SL resource, etc. described in this application may be the same or different, and this application does not limit this.
  • the SL configuration information of the first cell and the SL configuration information of the second cell respectively include the configuration information of the sending resource pool and the configuration information of the abnormal resource pool.
  • the first SL resource is obtained by the sending resource pool configuration information.
  • the terminal obtains the third SL resource according to the abnormal resource pool configuration information of the second cell until the terminal obtains the sending resource pool information of the first cell, and obtains According to the monitoring result of the sending resource pool of the first cell, the terminal obtains the second SL resource according to the sending resource pool information of the first cell.
  • the terminal first obtains the fourth SL resource according to the abnormal resource pool indicated by the abnormal resource pool configuration information of the first cell, after obtaining the sending resource pool information of the first cell, and obtaining After the sensing result of the sending resource pool of the first cell is obtained, the second SL resource is obtained according to the configuration information of the sending resource pool of the first cell.
  • the SL configuration information used at time T1, time T2, and time T3 is not strictly limited, which is the same as the introduction at time T1 above, and will not be repeated here.
  • the SL configuration information includes abnormal resource pool configuration information, it is also applicable to the method described in the embodiment of the present application. Even if there is an abnormal resource pool, the resource pool used by the terminal for SL communication is too high. After this change, the SL communication will still not be interrupted. It can be seen from the above that when the terminal camps on the first cell and does not obtain the SL configuration information of the first cell (that is, the target cell), it can continue to use the first SL configuration information, so that the reliability of SL communication can be effectively ensured and the solution can be efficiently solved. This solves the problem that the SL communication is interrupted due to the inability to obtain the required SL configuration information of the target cell in time.
  • the SL configuration information includes resource pool configuration information
  • the terminal does not obtain the resource pool configuration information of the first cell (target cell) (that is, the SL configuration information of the first cell)
  • it can be based on
  • the first resource pool configuration information (that is, the first SL configuration information or the current SL configuration information) acquires the first SL resource.
  • the terminal obtains the resource pool configuration information of the first cell (SL configuration information of the first cell)
  • it can obtain the second SL resource according to the resource pool configuration information of the first cell (SL configuration information of the first cell) .
  • the first SL resource and the second SL resource may be the same resource or different resources.
  • the terminal when the resource pool configuration information includes sending resource pool configuration information or receiving resource pool configuration information, the terminal not only needs to obtain the resource pool configuration information, but also obtain the monitoring result of the resource pool corresponding to the resource pool configuration information , The terminal can obtain the SL resource according to the resource pool configuration information.
  • the synchronization source indicated by the synchronization source information is the access network device.
  • the terminal can either synchronize with the second cell or with the first cell.
  • the terminal can also be understood that the terminal can be synchronized with the first access network device, or it can be synchronized with the first access network device. Synchronize with the second access network device.
  • the first access network device and the second access network device may be the same access network device or different access network devices.
  • the terminal may perform synchronization according to the target cell when it camps in the target cell (the first cell). Or, when the terminal is camping on the target cell and the synchronization source information of the target cell is not obtained, it can choose to synchronize with the first cell or the second cell according to the synchronization source information of the source serving cell (second cell) .
  • the synchronization configuration information also includes a direct frame number (DFN).
  • Timing parameters such as DFN offset (DFN offset) are used for the terminal to determine the DFN timing parameters based on GNSS. For example, as shown in Figure 3, between T1 and T3, the terminal uses the DFN timing parameters of the second cell to synchronize with the GNSS. After time T3 (which may include time T3), the terminal uses the DFN timing parameters of the first cell to achieve synchronization with the GNSS.
  • DFN offset DFN offset
  • the source serving cell can be used.
  • the DFN timing parameters are synchronized with GNSS.
  • the terminal can synchronize with the GNSS according to the DFN timing parameters of the target cell (the first cell).
  • the terminal Before T3 time, the terminal will establish the first SLRB according to the current SLRB configuration information; after T3 time (which may include time T3), the terminal will base on the SLRB of the first cell The configuration information establishes the second SLRB, and deletes the first SLRB established before.
  • the terminal when the SL configuration information includes the SLRB configuration information, and the terminal camps on the target cell and does not obtain the SLRB configuration information of the target cell, it can be based on the SLRB of the source serving cell (second cell).
  • the configuration information establishes the first SLRB.
  • the terminal may establish a second SLRB according to the SLRB configuration information of the target cell (the first cell), and delete the previously established first SLRB.
  • the current serving cell can broadcast the SL configuration information of the neighboring cell through the terminal before the cell reselection, so that the terminal can obtain the SL configuration information of the target cell before camping on the target cell, which can also be solved
  • FIG. 4 and FIG. 5 are schematic diagrams of another wireless communication method provided by an embodiment of this application.
  • the current serving cell (source serving cell) of the terminal is the second cell, or the terminal currently resides in the second cell.
  • the second cell is served by the first access network device
  • the neighboring cell is a neighboring cell of the second cell
  • the neighboring cell includes the first neighboring cell
  • the first neighboring cell may be the second cell Any one of the neighboring cells
  • the first neighboring cell is served by the second access network device:
  • the first access network device sends at least one second side link SL configuration information.
  • the second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information.
  • the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the resource pool configuration information, SLRB configuration information, and synchronization configuration information are the same as those in the embodiment shown in FIG. 3 above, and will not be repeated here.
  • the identification information of the neighboring cell may include a physical cell identifier (PCI), or other cell-related identification information, such as a cell global identifier (CGI) or a cell index.
  • PCI physical cell identifier
  • CGI cell global identifier
  • the first SL configuration information corresponding to the first neighboring cell PCI1 is SL configuration 1
  • the second SL configuration information corresponding to the second neighboring cell PCI2 is SL configuration 2
  • the third neighboring cell PCI3 corresponds to
  • the third SL configuration information is SL configuration 3 and so on.
  • the adjacent cell identification information and the specific form of the SL configuration information corresponding to the adjacent cell identification information can be shown in the following table:
  • the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information can be broadcast in the same SIB, or Broadcast in different SIBs, this application does not limit this.
  • the first access device broadcasts at least one piece of second SL configuration information through one or more SIBs of the second cell.
  • the first access device broadcasts one second SL configuration information through one SIB of the second cell; for another example, the first access device broadcasts multiple second SL configuration information through one SIB of the second cell;
  • the first access device broadcasts a piece of second SL configuration information through multiple SIBs of the second cell, etc., which is not limited in this application. or,
  • the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information can be sent to the terminal in the same RRC signaling
  • the terminal can also send to the terminal in different RRC signaling, which is not limited in this application.
  • the first access network device sends the at least one second SL configuration information to the terminal while instructing the terminal device to enter the idle state or the inactive state through RRC signaling.
  • the wireless communication method provided in the embodiment of the present application further includes:
  • S410' The terminal receives the second SL configuration information.
  • the wireless communication method provided in the embodiment of the present application further includes:
  • S420 The terminal obtains the second SL resource according to the second SL configuration information.
  • the terminal may use the second SL resource to perform SL communication when camping on the first neighboring cell.
  • the specific time for the terminal to obtain the second SL resource according to the second SL configuration information may be determined according to the terminal implementation.
  • the terminal may obtain the second SL resource according to the second SL configuration information when camping on the first neighboring cell. Two SL resources.
  • the terminal may also obtain the second SL resource according to the second SL configuration information when receiving the second SL configuration information. This application does not limit the specific time for acquiring the second SL resource according to the second SL configuration information.
  • the terminal when the terminal is in the second cell (the source serving cell), it can obtain the second SL configuration information of the neighboring cell from the second cell, and reselect the target neighboring cell (that is, the target cell, such as In the case of the first neighboring cell), the second SL resource is obtained based on the second SL configuration information of the target cell obtained by the terminal in the source serving cell, so that the second SL resource of the target cell can be obtained in time (or in advance).
  • the SL configuration information is used to obtain the second SL resource, and then the SL communication can be continued, which also solves the problem of the interruption of the SL communication of the terminal during cell reselection.
  • the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly obtain the SL configuration information of the target cell.
  • the continuous broadcast refers to continuous uninterrupted broadcast, or called continuous broadcast.
  • the first access network device broadcasts the second SL configuration information on demand, which can reduce air interface resources.
  • the first access network device may also broadcast the SL configuration information of the second cell.
  • the first access network device always broadcasts the SL configuration information of the second cell, or the first access network device broadcasts the SL configuration information of the second cell on demand, where the SL configuration information of the second cell is the same as the second SL configuration
  • the information (SL configuration information corresponding to neighboring cells) can be sent together, for example in the same SIB.
  • the SL configuration information of the second cell and the second SL configuration information can be sent separately, for example, sent in different SIBs, which is not limited in this application.
  • the first access network device can always broadcast the second SL configuration information. If the air interface resources are tight, the first access network device can be used to broadcast the second SL configuration on demand Way of information. In this way, the SL resource configuration required by the terminal can be flexibly realized.
  • the terminal obtains the first SL resource according to the first SL configuration information.
  • the first SL configuration information is SL configuration information of the second cell.
  • the first SL configuration information is pre-configuration (Pre-configuration) SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device or pre-stored in the terminal chip.
  • the terminal obtains the second SL resource according to the second SL configuration information. It can be understood that when the terminal camps on the second cell, it obtains the second SL configuration information corresponding to the first neighboring cell from the system message of the second cell.
  • the second SL configuration information includes abnormal resource pool configuration information of the first neighboring cell, and the terminal may obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. Furthermore, after the sending resource pool configuration information of the first neighboring cell can be further obtained, and the sensing result of the sending resource pool is obtained, the second SL resource is acquired according to the sending resource pool configuration information of the first neighboring cell.
  • the second SL configuration information includes the configuration information of the sending resource pool of the first neighboring cell. Before the terminal camps on the first neighboring cell, the sensing result of the sending resource pool is obtained in advance, and the first neighboring cell is camped on.
  • the second SL resource is acquired according to the configuration information of the sending resource pool of the first neighboring cell.
  • the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the transmission resource pool configuration information of the first neighboring cell, and the terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell.
  • the third SL resource after acquiring the sending resource pool configuration information of the first neighboring cell and acquiring the sensing result of the sending resource pool of the first neighboring cell, then according to the sending resource pool configuration information of the first neighboring cell Obtain the second SL resource.
  • the wireless communication method provided in FIG. 4 further includes:
  • the second access network device Before the terminal receives the second side link SL configuration information from the first access network device, the second access network device sends the second SL configuration information to the first access network device.
  • the first access network device obtains the second SL configuration information of the second access network device in advance, so that the SL configuration information of the first neighboring cell can be sent to the terminal in the second cell.
  • the wireless communication method provided in FIG. 4 further includes:
  • step S440 The first access network device sends the SL configuration information of the second cell to the second access network device.
  • the sending time of step S440 is not limited.
  • step S440 may be before or after any one of step S410 to step S430. Therefore, the first neighboring cell can send the SL configuration information of the second cell to the terminal camped in the first neighboring cell.
  • the first access network device may also send the SL configuration information of the second cell to other access network devices, such as the third access network device, even if the third access network device does not use the third access network device
  • the SL configuration information of the corresponding cell is sent to the first access network device, and the first access network device may also send the SL configuration information of the second cell to the third access network device.
  • the serving cell can not only broadcast the second SL configuration information of the neighboring cell to the terminal, of course, it can also broadcast the SL configuration information of the cell to the terminal, so that the terminal can do so before the cell reselection.
  • the second SL configuration information of the target cell after the reselection is learned, thereby ensuring the continuity of SL communication of the terminal in the cell reselection process.
  • first access network device to which the second cell belongs and the second access network device to which the first neighboring cell belongs, shown in FIG. 5, may be different access network devices or the same Access network equipment, this embodiment of the application does not impose restrictions on this.
  • the present application also provides a wireless communication method, which can also solve the problem of interruption of SL communication of the terminal during the cell reselection process.
  • the current serving cell of the terminal is the second cell, as shown in Figures 6 and 7, the terminal resides in the second cell, the first access network device provides services for the second cell, and the second access The network equipment provides services for the first neighboring cell:
  • the first system message SI broadcast by the second access network device includes first requested configuration information, the first requested configuration information corresponds to a second SI (for example, SIB3), and the second SI includes SL configuration information of the first neighboring cell.
  • SIB3 a second SI
  • the SL configuration information of the first neighboring cell includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the resource pool configuration information, SLRB configuration information, and synchronization configuration information are the same as those in the embodiment shown in FIG. 3 above, and will not be repeated here.
  • the first system message SI is SIB1.
  • the second access network device broadcasts the SIB1 through the first neighboring cell.
  • the terminal receives the first SI, and determines the first request configuration information corresponding to the second SI according to the first SI.
  • the first request configuration information is used to indicate the first information used by the second SI and the first time-frequency resource for sending the first information.
  • the terminal sends the first information to the second access network device on the first time-frequency resource.
  • the first information may be a preamble
  • the first time-frequency resource may be a first random access resource.
  • the terminal initiates random access according to the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the terminal sends the first information to the second access network device on the first time-frequency resource,
  • the second access network device may be instructed to broadcast the second SI through the first neighboring cell.
  • the terminal sends the first neighboring cell to the first neighboring cell according to the first SI.
  • the terminal sends the first information to the first neighboring cell according to the first SI.
  • the time for the terminal to send the first message to the first neighboring cell may be determined by the terminal itself, but in order to reduce the interruption delay, the first message needs to be sent before camping on the target cell.
  • the wireless communication method provided in the embodiment of the present application further includes:
  • the second access network device sends the SL configuration information of the first neighboring cell to the terminal according to the first information.
  • the second access network device may send the SL configuration information of the first neighboring cell to the terminal in the second SI, which can be understood as the second access network device broadcasting the second SI through the first neighboring cell, so
  • the second SI includes SL configuration information of the first neighboring cell.
  • the second SI may be other SIBs other than SIB1, such as SIB3 in the example.
  • the wireless communication method provided in the embodiment of the present application further includes:
  • S640' The terminal receives the SL configuration information of the first neighboring cell.
  • the wireless communication method provided in the embodiment of the present application further includes:
  • the terminal obtains the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell.
  • the specific time for the terminal to obtain the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell may be determined according to the network implementation.
  • the terminal may be camped on the first neighboring cell. Acquire the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell.
  • the terminal receives the second SL configuration information, it can obtain the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell.
  • the specific time for the SL configuration information of the cell to obtain the SL resources of the first neighboring cell is not limited.
  • the terminal can obtain the second SL resource according to the SL configuration information of the first neighboring cell. It can be understood that when the terminal camps on the second cell, it can obtain the SL configuration information of the first neighboring cell corresponding to the first neighboring cell.
  • the terminal obtains the first SL resource according to the first SL configuration information.
  • the first SL configuration information is SL configuration information of the second cell.
  • the first SL configuration information is pre-configuration (Pre-configuration) SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device or pre-stored in the terminal chip.
  • the SL configuration information of the first neighboring cell includes configuration information of the abnormal resource pool of the first neighboring cell, and the terminal may obtain the third SL resource according to the configuration information of the abnormal resource pool of the first neighboring cell. Furthermore, after the sending resource pool configuration information of the first neighboring cell can be further obtained, and the sensing result of the sending resource pool is obtained, the third SL resource is acquired according to the sending resource pool configuration information of the first neighboring cell.
  • the SL configuration information of the first neighboring cell includes the configuration information of the sending resource pool of the first neighboring cell.
  • the sensing result of the sending resource pool is obtained in advance, and the After staying in the first neighboring cell, the second SL resource is acquired according to the configuration information of the sending resource pool of the first neighboring cell.
  • the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the transmission resource pool configuration information of the first neighboring cell, and the terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell.
  • the third SL resource after acquiring the sending resource pool configuration information of the first neighboring cell and acquiring the sensing result of the sending resource pool of the first neighboring cell, then according to the sending resource pool configuration information of the first neighboring cell Obtain the second SL resource.
  • the terminal can send the required SL communication request (preamble) to the first neighboring cell before the cell reselection, so that the SL configuration information of the first neighboring cell can be obtained in advance.
  • the cell can be the target cell of the terminal.
  • the terminal can use the SL configuration information of the first neighboring cell to obtain the SL resources of the first neighboring cell, which effectively solves the problem that the terminal is in the cell.
  • the second cell shown in FIG. 7 belongs to the first access network device, and the first neighboring cell belongs to the second access network device, that is, belongs to a different access network device.
  • the second cell may also belong to the same access network device as the first neighboring cell, such as the first access network device as shown in FIG. 7, which is not limited in the embodiment of the present application.
  • the wireless communication method, device or device provided in this application is applicable to: the source serving cell (the second cell shown in FIG. 3) and the target cell (the first cell shown in FIG. 3) do not belong to the same valid area (validity area).
  • the definition of the effective area is the same as the definition of the relevant standards, so I will not repeat it here.
  • SI belongs to different effective areas.
  • the SI corresponding to the SL in the source serving cell is different from the value tag of the SI corresponding to the SL in the target cell, it is considered that the SI corresponding to the SL in the source cell and the SI corresponding to the SL in the target cell are different Effective area.
  • the wireless communication method provided in any of the embodiments of the present application can solve the problem that the SL communication is interrupted in the case of the terminal in the cell reselection under the on-demand mechanism.
  • FIG. 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of the application.
  • the communication device is used to execute the steps performed by the terminal 20 in the method embodiment corresponding to FIG. 3.
  • the device may include: an acquiring unit 810 and a processing unit 820,
  • the processing unit 820 is configured to, when the obtaining unit 810 does not obtain the side link SL configuration information of the first cell, obtain the first SL resource according to the first SL configuration information.
  • the first SL configuration information is current SL configuration information.
  • the first SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the first SL configuration information is the SL configuration information of the second cell; or, when the second cell does not support the SL communication required by the device, the first SL configuration information is One SL configuration information is pre-configured SL configuration information.
  • the synchronization configuration information includes synchronization source information.
  • the synchronization source indicated by the synchronization source information is an access network device, the device is synchronized with the second cell, or the device is synchronized with the first cell.
  • Cell synchronization It is understandable that when the device camps on the first cell and does not obtain the SL configuration parameters of the first cell, it can be synchronized with the first cell or with the second cell.
  • the synchronization configuration information includes synchronization source information, and when the synchronization source indicated by the synchronization source information is a GNSS, the device is synchronized with the GNSS. Further, the synchronization configuration information further includes DFN timing parameters, where the DFN timing parameters are used to determine the synchronization timing between the device and the GNSS. Then the DFN timing parameter is the DFN timing parameter of the first cell, or the DFN timing parameter is the DFN timing parameter of the second cell.
  • the DFN timing parameters of the second cell are used to synchronize with the GNSS; or, the device obtains the first cell In the case of the SL configuration parameters, the DFN timing parameters of the first cell are used to synchronize with the GNSS.
  • the resource pool configuration information includes one or more of the following: sending resource pool configuration information, receiving resource pool configuration information, or abnormal resource pool configuration information.
  • the device does not obtain the SL configuration information of the target cell (the first cell)
  • the first SL resource can be obtained according to the first SL configuration information, thereby ensuring the communication continuity of the SL.
  • the device shown in FIG. 8 may be a terminal or a chip device in the terminal.
  • FIG. 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention.
  • the device includes a transceiver 910, a processor 920, and optionally a memory 930.
  • the processor 920, the transceiver 910, and the memory 930 pass through One or more communication bus connections.
  • the processor 920 is configured to support the device to execute the steps executed by the terminal in the method described in FIG. 3.
  • the processor 920 may be a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof.
  • the memory 930 is used to store program codes and the like.
  • the memory 930 may include a volatile memory (volatile memory), such as a random access memory (random access memory, RAM); the memory 930 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (read-only memory).
  • volatile memory volatile memory
  • non-volatile memory non-volatile memory
  • read-only memory read-only memory
  • ROM read-only memory
  • flash memory flash memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the processor 920 may call the program code stored in the memory 930 to perform the following operations:
  • the transceiver 910 When the transceiver 910 does not obtain the side link SL configuration information of the first cell, it obtains the first SL resource according to the first SL configuration information, and the first SL configuration information is the current SL configuration information.
  • the first SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the first SL configuration information is the SL configuration information of the second cell; or, when the second cell does not support the SL communication required by the device, the first SL configuration information is One SL configuration information is pre-configured SL configuration information.
  • the synchronization configuration information includes synchronization source information.
  • the synchronization source indicated by the synchronization source information is an access network device, the device is synchronized with the second cell, or the device is synchronized with the first cell.
  • Cell synchronization It is understandable that when the device camps on the first cell and does not obtain the SL configuration parameters of the first cell, it can be synchronized with the first cell or with the second cell.
  • the synchronization configuration information includes synchronization source information, and when the synchronization source indicated by the synchronization source information is a GNSS, the device is synchronized with the GNSS. Further, the synchronization configuration information further includes DFN timing parameters, where the DFN timing parameters are used to determine the synchronization timing between the device and the GNSS. Then the DFN timing parameter is the DFN timing parameter of the first cell, or the DFN timing parameter is the DFN timing parameter of the second cell.
  • the DFN timing parameters of the second cell are used to synchronize with the GNSS; or, the device obtains the first cell In the case of the SL configuration parameters, the DFN timing parameters of the first cell are used to synchronize with the GNSS.
  • the resource pool configuration information includes one or more of the following: sending resource pool configuration information, receiving resource pool configuration information, or abnormal resource pool configuration information.
  • the device does not obtain the SL configuration information of the target cell (the first cell)
  • the first SL resource can be obtained according to the first SL configuration information, thereby ensuring the communication continuity of the SL.
  • the device shown in FIG. 9 may be a terminal or a chip in the terminal.
  • FIG. 10 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application.
  • the communication device is used to execute the steps performed by the terminal of the method embodiment corresponding to FIG. 4 and FIG. 5.
  • the current serving cell of the device Is the second cell, or that the device currently resides in the second cell, the second cell is served by the first access network device, the neighboring cell is the neighboring cell of the second cell, and the neighboring cells include
  • the first neighboring cell, the first neighboring cell may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device.
  • the device may include: a receiving unit 1010,
  • the receiving unit 1010 is configured to receive at least one second side uplink SL configuration information from the second cell, where the second SL configuration information includes adjacent cell identification information and SL configuration corresponding to the adjacent cell identification information information.
  • the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the device optionally further includes a processing unit 1020, configured to obtain a second SL resource according to the second SL configuration information.
  • the neighboring cells include the first neighboring cell
  • the processing unit 1020 is further configured to: camp on the device. Before leaving the first neighboring cell, obtain the first SL resource according to the first SL configuration information, where the first SL configuration information is current SL configuration information. Or the processing unit 1020 is configured to obtain a second SL resource according to the second SL configuration information when the device resides in the first neighboring cell.
  • the first SL configuration information includes: when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, in the second cell When the cell does not support the SL communication required by the device, the first SL configuration information is pre-configured SL configuration information.
  • the second SL configuration information includes abnormal resource pool configuration information
  • the processing unit 1020 is further configured to:
  • the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.
  • the device can receive the SL configuration information of the neighboring cell from the current serving cell (that is, the second SL configuration information), and the device needs to perform cell reselection.
  • the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.
  • the device shown in FIG. 10 may be a terminal or a chip in the terminal.
  • FIG. 10 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention.
  • the device includes a transceiver 1110, a processor 1120, and optionally a memory 1130.
  • the processor 1120, the transceiver 1110, and the memory 1130 pass One or more communication bus connections.
  • the processor 1120 is configured to support the device to execute the method described in FIG. 4 and FIG. 5 and the steps executed by the terminal in the foregoing content.
  • the processor 1120 may be a CPU, an NP, a hardware chip, or any combination thereof.
  • the memory 1130 is used to store program codes and the like.
  • the memory 1130 may include a volatile memory, such as RAM; the memory 1130 may also include a non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1130 may also include a combination of the foregoing types of memory.
  • the transceiver 1110 is configured to receive at least one second side uplink SL configuration information from the second cell, where the second SL configuration information includes adjacent cell identification information and SL configuration corresponding to the adjacent cell identification information information.
  • the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the transceiver 1110 and the processor 1120 may call the program code stored in the memory 1130 to execute: obtain the second SL resource according to the second SL configuration information.
  • the neighboring cells include the first neighboring cell, and when the device needs to camp on the first neighboring cell for cell reselection, the processor 1120 is further configured to: camp on the device. Before leaving the first neighboring cell, obtain the first SL resource according to the first SL configuration information, where the first SL configuration information is the current SL configuration information; or the processor 1120 is configured to reside in the device at all In the case of the first neighboring cell, acquiring the second SL resource according to the second SL configuration information.
  • the first SL configuration information includes: when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, in the second cell When the cell does not support the SL communication required by the device, the first SL configuration information is pre-configured SL configuration information.
  • the second SL configuration information includes abnormal resource pool configuration information
  • the processor 1120 is further configured to:
  • the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.
  • the device can receive the SL configuration information of the neighboring cell from the current serving cell (that is, the second SL configuration information), and the device needs to perform cell reselection.
  • the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.
  • the device shown in FIG. 11 may be a terminal or a chip in the terminal.
  • FIG. 12 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application.
  • the communication device is used to perform the steps performed by the first access network device in the method embodiments corresponding to FIG. 4 and FIG. 5, and the current serving cell of the terminal
  • the (source serving cell) is the second cell, or the terminal is currently camping on the second cell, the second cell is served by the device, the neighboring cell is the neighboring cell of the second cell, and the neighboring cell It includes a first neighboring cell, the first neighboring cell may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device.
  • the device may include: a sending unit 1210,
  • the sending unit 1210 is configured to send at least one second side uplink SL configuration information.
  • the second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information.
  • the second SL configuration information is used to configure second SL resources for the terminal, and includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the device further includes an obtaining unit 1220,
  • the obtaining unit 1220 is configured to obtain the second SL configuration information from the neighboring cell before the sending unit 1210 sends the second SL configuration information to the terminal.
  • the sending unit 1210 is further configured to send the SL configuration information of the second cell to the second access network device.
  • the second cell is the cell where the terminal currently camps.
  • the device can send the second SL configuration information (configuration information of the neighboring cell) to the terminal in the current serving cell of the terminal, so that the terminal can obtain the SL configuration information of the neighboring cell in time (or in advance), which effectively solves the problem.
  • the problem of SL communication interruption described in this application is solved.
  • the device shown in FIG. 12 may be an access network device or a chip in the access network device.
  • FIG. 12 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention.
  • the device includes a transceiver 1310, a processor 1320, and optionally a memory 1330. Or multiple communication buses are connected.
  • the processor 1320 is configured to support the device to execute the steps performed by the first access network device in the methods described in FIG. 4 and FIG. 5.
  • the processor 1320 may be a CPU, an NP, a hardware chip, or any combination thereof.
  • the memory 1330 is used to store program codes and the like.
  • the memory 1330 may include a volatile memory, such as RAM; the memory 1330 may also include a non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1330 may also include a combination of the foregoing types of memory.
  • the transceiver 1310 sends at least one second side link SL configuration information.
  • the second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information.
  • the second SL configuration information is used to configure second SL resources for the terminal, and includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.
  • the transceiver 1310 is further configured to: before the transceiver 1310 sends the second SL configuration information to the terminal, obtain second SL configuration information from the neighboring cell.
  • the device can send the second SL configuration information (configuration information of the neighboring cell) to the terminal in the current serving cell of the terminal, so that the terminal can obtain the SL configuration information of the neighboring cell in time or in advance, which effectively solves the problem.
  • the device shown in FIG. 13 may be an access network device or a chip in the access network device.
  • FIG. 14 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application.
  • the communication device is used to perform the steps performed by the terminal in the method embodiments corresponding to FIG. 6 and FIG. 7, and the device resides in the second cell.
  • the first access network device provides services for the second cell
  • the second access network device provides services for the first neighboring cell.
  • the device may include: a receiving unit 1410, a determining unit 1420, and a sending unit 1430,
  • the receiving unit 1410 is configured to receive the first system message SI from the second access network device.
  • the first SI includes first requested configuration information
  • the first requested configuration information corresponds to a second SI (for example, SIB3)
  • the second SI includes SL configuration information of the first neighboring cell.
  • the first system message SI is SIB1.
  • the second access network device broadcasts the SIB1 through the first neighboring cell.
  • the determining unit 1420 determines the first request configuration information corresponding to the second SI according to the first SI.
  • the first request configuration information is used to indicate the first information used by the second SI and the first time-frequency resource for sending the first information.
  • the first information may be a preamble
  • the first time-frequency resource may be a first random access resource.
  • the sending unit 1430 is configured to send the first information to the second access network device on the first time-frequency resource.
  • the terminal initiates random access according to the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the terminal sends the first information to the second access network device on the first time-frequency resource,
  • the second access network device may be instructed to broadcast the second SI through the first neighboring cell.
  • the receiving unit 1410 of the wireless communication device described in FIG. 14 is further configured to receive SL configuration information of the first neighboring cell.
  • the SL configuration information of the first neighboring cell is the SL configuration information sent by the second access network device to the apparatus according to the first information.
  • the wireless communication device described in FIG. 14 further includes an acquiring unit 1440,
  • the acquiring unit 1440 is configured to acquire the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell.
  • the SL configuration information sent by the neighboring cell can be received in the current serving cell of the device, and the device stays in the corresponding cell when the device needs to perform cell reselection.
  • the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.
  • the device shown in FIG. 14 may be a terminal or a chip in the terminal.
  • FIG. 15 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention.
  • the device includes a transceiver 1510, a processor 1520, and optionally a memory 1530.
  • the processor 1520, the transceiver 1510, and the memory 1530 pass through One or more communication bus connections.
  • the processor 1520 is configured to support the device to execute the steps executed by the terminal in the methods described in FIG. 6 and FIG. 7.
  • the processor 1520 can be a CPU, an NP, a hardware chip, or any combination thereof.
  • the memory 1530 is used to store program codes and the like.
  • the memory 1530 may include a volatile memory, such as RAM; the memory 1530 may also include a non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1530 may also include a combination of the foregoing types of memory.
  • the transceiver 1510 is configured to receive the first system message SI from the second access network device.
  • the first SI includes first requested configuration information
  • the first requested configuration information corresponds to a second SI (for example, SIB3)
  • the second SI includes SL configuration information of the first neighboring cell.
  • the transceiver 1510 and the processor 1520 may call the program code stored in the memory 1530 to execute: determine the first request configuration information corresponding to the second SI according to the first SI.
  • the first request configuration information is used to indicate the first information used by the second SI and the first time-frequency resource for sending the first information.
  • the first information may be a preamble
  • the first time-frequency resource may be a first random access resource.
  • the transceiver 1510 is further configured to send the first information to the second access network device on the first time-frequency resource.
  • the device initiates random access according to the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the device sends the first information to the second access network device on the first time-frequency resource,
  • the second access network device may be instructed to broadcast the second SI through the first neighboring cell.
  • the transceiver 1510 of the wireless communication device described in FIG. 15 is further configured to receive SL configuration information of the first neighboring cell.
  • the SL configuration information of the first neighboring cell is the SL configuration information sent by the second access network device to the device according to the first information.
  • the processor 1520 of the wireless communication device described in FIG. 15 is further configured to:
  • the device when the device can receive the SL configuration information of the neighboring cell from the neighboring cell, it will camp on the neighboring cell if the device needs to perform cell reselection.
  • the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.
  • the device shown in FIG. 15 may be a terminal or a chip in the terminal.
  • FIG. 16 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application.
  • the communication device is used to execute the steps performed by the second network device in the method embodiments corresponding to FIG. 6 and FIG. 7.
  • the device may include: sending Unit 1610 and receiving unit 1620,
  • the sending unit 1610 is configured to send the first system message SI.
  • the first SI includes first requested configuration information
  • the first requested configuration information corresponds to a second SI (for example, SIB3)
  • the second SI includes SL configuration information of the first neighboring cell.
  • the first request configuration information is used to indicate the first information used by the second SI and the first time-frequency resource for sending the first information.
  • the first system message SI is SIB1.
  • the device broadcasts the SIB1 through the first neighboring cell.
  • the receiving unit 1620 is configured to receive first information from the terminal on the first time-frequency resource.
  • the first information may be a preamble
  • the first time-frequency resource may be a first random access resource.
  • the device further includes a determining unit 1630, configured to determine the second SI according to the received first information.
  • the sending unit 1610 is further configured to:
  • the second SI includes SL configuration information of the first neighboring cell.
  • the SL configuration information of the first neighboring cell can be sent to the terminal according to the first information sent by the terminal, so that even if the terminal is Without camping on the first neighboring cell, the SL configuration information of the first neighboring cell can also be obtained, which also solves the problem of interruption of SL communication described in this application.
  • the device shown in FIG. 16 may be a terminal or a chip in the terminal.
  • FIG. 16 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention.
  • the device includes a transceiver 1710, a processor 1720, and optionally a memory 1730.
  • the processor 1720, the transceiver 1710, and the memory 1730 pass through One or more communication bus connections.
  • the processor 1720 is configured to support the device to execute the steps performed by the second access network device in the methods described in FIG. 6 and FIG. 7.
  • the processor 1720 can be a CPU, an NP, a hardware chip or any combination thereof.
  • the memory 1730 is used to store program codes and the like.
  • the memory 1730 may include a volatile memory, such as RAM; the memory 1730 may also include a non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1730 may also include a combination of the foregoing types of memory.
  • the transceiver 1710 is used to send the first system message SI.
  • the first SI includes first requested configuration information
  • the first requested configuration information corresponds to a second SI (for example, SIB3)
  • the second SI includes SL configuration information of the first neighboring cell.
  • the first request configuration information is used to indicate the first information used by the second SI and the first time-frequency resource for sending the first information.
  • the first system message SI is SIB1.
  • the device broadcasts the SIB1 through the first neighboring cell.
  • the transceiver 1710 is further configured to receive first information from the terminal on the first time-frequency resource.
  • the first information may be a preamble
  • the first time-frequency resource may be a first random access resource
  • the transceiver 1710 and the processor 1720 may call the program code stored in the memory 1730 to execute: determine the second SI according to the received first information.
  • the transceiver 1710 is further configured to send the second SI to the terminal.
  • the second SI includes SL configuration information of the first neighboring cell.
  • the SL configuration information of the first neighboring cell can be sent to the terminal according to the first information sent by the terminal, so that even if the terminal is Without camping on the first neighboring cell, the SL configuration information of the first neighboring cell can also be obtained, which also solves the problem of interruption of SL communication described in this application.
  • the device shown in FIG. 17 may be an access network device or a chip in the access network device.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a storage disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a Solid State Disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Un procédé et un dispositif de communication sans fil proposés par la présente invention peuvent résoudre le problème d'une liaison latérale (SL) communiquant avec un terminal pendant un processus de resélection de cellule selon un mécanisme de demande d'informations de système. L'invention concerne un procédé de communication sans fil, consistant : lorsqu'un terminal réside dans une première cellule et que le terminal n'acquiert pas d'informations de configuration de liaison latérale (SL) de la première cellule, à acquérir, par le terminal, une première ressource de SL selon des premières informations de configuration de SL, les premières informations de configuration de SL étant des informations actuelles de configuration de SL; et éventuellement, lorsque le terminal acquiert les informations de configuration de SL de la première cellule, à acquérir, par le terminal, une seconde ressource de SL selon les informations de configuration de SL de la première cellule.
PCT/CN2019/109544 2019-09-30 2019-09-30 Procédé et dispositif de communication sans fil WO2021062675A1 (fr)

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