WO2020186526A1 - Procédé et appareil pour la recherche d'un équipement terminal - Google Patents

Procédé et appareil pour la recherche d'un équipement terminal Download PDF

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Publication number
WO2020186526A1
WO2020186526A1 PCT/CN2019/079125 CN2019079125W WO2020186526A1 WO 2020186526 A1 WO2020186526 A1 WO 2020186526A1 CN 2019079125 W CN2019079125 W CN 2019079125W WO 2020186526 A1 WO2020186526 A1 WO 2020186526A1
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WIPO (PCT)
Prior art keywords
paging
relay node
terminal device
network device
access network
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PCT/CN2019/079125
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English (en)
Chinese (zh)
Inventor
李晨琬
李振宇
王静
吴毅凌
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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 PCT/CN2019/079125 priority Critical patent/WO2020186526A1/fr
Priority to CN201980090091.3A priority patent/CN113348707A/zh
Publication of WO2020186526A1 publication Critical patent/WO2020186526A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a method and device for paging terminal equipment.
  • the access network equipment communicates with the terminal equipment through the wireless signal of the air interface.
  • the access network equipment needs to forward through the relay node to maintain business continuity with the terminal equipment .
  • the network includes a relay node
  • the present application provides a method and device for paging terminal equipment, which are used to implement paging terminal equipment through a relay node, so as to realize communication between the access network equipment and the terminal equipment.
  • the present application provides a method for paging a terminal device, the method includes: a relay node receives a paging message from an access network device, the paging message includes an identifier of the terminal device, and the paging message It is used to request to page the terminal device; the relay node determines a paging opportunity point of the terminal device; the relay node pages the terminal device according to the paging opportunity point. Based on this solution, the relay node completes the paging of the terminal equipment. In this way, even if there are obstacles (such as buildings, etc.) between the access network equipment and the terminal equipment, the terminal can be completed through the relay. The paging of the device can greatly improve the success rate of paging the terminal device.
  • the relay node determines the paging opportunity point according to first paging assistance information, and the first paging assistance information includes a paging cycle and a paging density.
  • the first paging assistance information is pre-configured to the relay node by the access network device; or, the paging message includes the first paging assistance information.
  • the paging message further includes second paging assistance information
  • the second paging assistance information includes one or more of the following information: paging priority, paging repetition times , Tracking area identifier TAI; the relay node pages the terminal device according to the paging opportunity point and the second paging assistance information.
  • the relay node before the relay node pages the terminal device according to the paging opportunity point, the relay node broadcasts a paging parameter to the terminal device, and the paging parameter is used Determining the paging opportunity point at the terminal device.
  • the paging parameter includes one or more of the following information: paging cycle, paging density, and TAI.
  • the relay node receives a radio resource control RRC connection request message from the terminal device, the RRC connection request message includes indication information, and the indication information is used to instruct the terminal device
  • the camped relay node changes or the cell under the access network device where it camps changes.
  • the relay node sends the indication information to the access network device.
  • this application provides a method for paging a terminal device.
  • the method includes: an access network device receives a first paging message from a core network device, where the first paging message includes an identifier of the terminal device, and The first paging message is used to request to page the terminal device; the access network device determines at least one relay node; the access network device sends a second paging message to the at least one relay node, The second paging message includes the identifier of the terminal device, and the second paging message is used to request to page the terminal device.
  • the access network device can select one or more relay nodes from the candidate relay nodes, and then the relay node completes the paging of the terminal device.
  • the paging of the terminal device can also be completed through the relay, which can greatly improve the success rate of paging the terminal device.
  • the first paging message includes the identification of at least one candidate relay node; the access network device selects the at least one relay node from the at least one candidate relay node node.
  • the access network device determines that the at least An identifier of a candidate relay node; the access network device sends the identifier of the at least one candidate relay node to the core network device.
  • the access network device selects the at least one relay node from at least one candidate relay node stored locally.
  • the at least one candidate relay node includes a relay node connected before the terminal device enters an idle state and/or a relay node whose signal quality reported by the terminal device meets a preset condition .
  • the second paging message further includes paging assistance information
  • the paging assistance information includes one or more of the following information: paging cycle, paging density, paging repetition Times, paging priority, TAI.
  • the access network device receives instruction information from the terminal device, where the instruction information is used to indicate that the relay node where the terminal device resides has changed or the relay node where the terminal device resides The cell under the access network device changes; after the terminal device enters an idle state, the access network device sends the updated relay node identifier of the terminal device to the core network device.
  • the access network device receives the RRC connection request message from the terminal device, and the RRC connection request message includes the indication information; or, the access network device receives the RRC connection request message from the terminal device.
  • the indication information of the relay node the indication information is sent to the relay node by the terminal device through an RRC connection request message.
  • this application provides a method for paging a terminal device.
  • the method includes: the core network device determines that it needs to page the terminal device in an idle state; the core network device sends a paging message to the access network device, and the paging
  • the paging message includes the identification of the terminal device and the identification of at least one candidate relay node, the paging message is used to request to page the terminal device, and the identification of the at least one candidate relay node is used to select as a paging At least one relay node of the terminal device.
  • the access network device can select one or more relay nodes from the candidate relay nodes sent by the core network device, and then the relay node completes the paging of the terminal device. In this way, even if the access network device and the When there are obstacles (such as buildings, etc.) between the terminal devices, the paging of the terminal devices can also be completed through the relay, which can greatly improve the success rate of paging the terminal devices.
  • the paging message further includes paging assistance information
  • the paging assistance information includes one or more of the following information: paging repetition times, paging priority, and TAI.
  • the at least one candidate relay node includes a relay node connected before the terminal device enters an idle state and/or a relay node whose signal quality reported by the terminal device meets a preset condition .
  • the method before the core network device determines that it needs to page the terminal device in the spatial state, the method further includes: in the process that the terminal device enters the idle state, the core network device receives The identifier of the at least one candidate relay node of the access network device.
  • the present application provides a communication method, the method includes: a terminal device determines that the relay node where the terminal device resides or a cell under the access network device where the terminal device resides has changed; The access network device or the relay node sends an RRC connection request message.
  • the RRC connection request message includes indication information used to indicate that the relay node where the terminal device resides has changed or the access network device under which the terminal device resides has changed. The cell has changed.
  • the present application provides an apparatus for paging terminal equipment.
  • the apparatus may be a relay node or a chip for the relay node.
  • the device has the function of realizing each embodiment of the above-mentioned first aspect. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides an apparatus for paging terminal equipment.
  • the apparatus may be an access network equipment or a chip for the access network equipment.
  • the device has the function of realizing each embodiment of the second aspect described above. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides an apparatus for paging terminal equipment.
  • the apparatus may be a core network equipment or a chip for the core network equipment.
  • the device has the function of realizing each embodiment of the third aspect. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides a device, which may be a terminal device or a chip for the terminal device.
  • the device has the function of realizing each embodiment of the fourth aspect described above. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides a device including: a processor and a memory; the memory is used to store computer execution instructions, and when the device is running, the processor executes the computer execution instructions stored in the memory to make the device Perform the methods described in the above aspects.
  • the present application provides a device, including: including units or means for performing each step of the above aspects.
  • the present application provides a device including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit and execute the methods described in the foregoing aspects.
  • the processor includes one or more.
  • the present application provides a device, including a processor, configured to be connected to a memory and used to call a program stored in the memory to execute the methods described in the foregoing aspects.
  • the memory can be located inside the device or outside the device.
  • the processor includes one or more.
  • the present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes a processor to execute the methods described in the foregoing aspects.
  • the present application also provides a computer program product including instructions, which when run on a computer, cause the computer to execute the methods described in the foregoing aspects.
  • the present application also provides a chip system, including a processor, configured to execute the methods described in the foregoing aspects.
  • the present application also provides a communication system, including: a relay node for executing any of the methods described in the above first aspect and an access network device for executing any of the methods described in the second aspect above .
  • the communication system further includes a core network device for executing any of the methods described in the third aspect.
  • the communication system further includes a terminal device for executing any of the methods described in the fourth aspect.
  • Figure 1 is a schematic diagram of a possible network architecture provided by this application.
  • FIG. 2 is a schematic flowchart of a method for paging terminal equipment provided by this application;
  • FIG. 3 is a schematic flowchart of another method for paging terminal equipment provided by this application.
  • Fig. 4 is a schematic diagram of a paging terminal device provided by this application.
  • FIG. 5 is a schematic diagram of a paging terminal device provided by this application.
  • FIG. 6 is a schematic diagram of another apparatus for paging terminal equipment provided by this application.
  • FIG. 7 is a schematic diagram of another communication device provided by this application.
  • FIG. 8 is a schematic diagram of another communication device provided by this application.
  • the network architecture includes core network, access network equipment and relay nodes. This network architecture can be used to provide network services for terminal devices.
  • the core network may include network exposure function (NEF) network elements, network storage function (network function repository function, NRF) network elements, and policy control functions ( policy control function (PCF) network element, unified data management (UDM) network element, application function (AF) network element, access and mobility management function (access and mobility management function, AMF) network Element, session management function (SMF) network element, user plane function (UPF) network element, etc.
  • NEF network exposure function
  • NRF network storage function repository function
  • PCF policy control functions
  • UDM unified data management
  • AF application function
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the core network may include mobility management entities (MME), Serving Gateway (S-GW), and Packet Data Network Gateway (PDN Gateway, P-GW). GW), Home Subscriber Server (HSS) and so on.
  • MME mobility management entities
  • S-GW Serving Gateway
  • PDN Gateway Packet Data Network Gateway
  • HSS Home Subscriber Server
  • the core network equipment in this application may be an MME in a 4G network, an AMF network element in a 5G network, or other network elements with the aforementioned AMF network element or MME function in a future communication system.
  • the AMF network element is a control plane network element provided by the operator's network, responsible for the access control and mobility management of terminal equipment accessing the operator's network, for example, including mobile status management, assigning user temporary identities, authenticating and authorizing users And other functions.
  • MME The main function of MME is to support non-access stratum (NAS) signaling and its security, track area (TA) list management, P-GW and S-GW selection, and cross-MME handover Carry out the selection of MME, and perform the service general packet radio service (General Packet Radio Service, GPRS) support node (Serving) during the handover process to the second generation (2G)/third generation (3G) access system GPRS Support Node (SGSN) selection, user authentication, roaming control and bearer management, and mobility management between core network nodes of different 3GPP access networks.
  • GPRS General Packet Radio Service
  • SGSN GPRS Support Node
  • access network equipment also known as radio access network (RAN) equipment
  • RAN radio access network
  • Access network equipment includes, but is not limited to: 5G Next-generation base stations (gnodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (base station controller) , BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP) ), transmitting point (TP), mobile switching center, etc.
  • 5G Next-generation base stations (gnodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (base station controller) , BSC), base transceiver station (base transcei
  • the terminal equipment of the present application (also referred to as user equipment (UE)) is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; or on the water (Such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites, etc.).
  • UE user equipment
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial control (industrial control) Wireless terminals in ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety (transportation safety) ,
  • the wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), or it can also support machine type communication (MTC), enhanced machine type communication (Enhanced Machine Type Communication, eMTC), narrowband (narrow band, NB) Internet of Things (Internet of Things, IoT) and other communication types of terminal equipment, etc.
  • MTC machine type communication
  • eMTC enhanced machine type communication
  • NB narrowband Internet of Things
  • IoT Internet of Things
  • the relay node in this application is a network unit with a relay function.
  • it can be a relay or a terminal configured with a relay function.
  • This application does not limit the implementation of the relay node.
  • the relay node may also be referred to as an integrated access backhaul (IAB) node.
  • IAB integrated access backhaul
  • the terminal equipment will be referred to as UE and the RAN equipment will be referred to as RAN for short in this application. Therefore, the RAN that appears anywhere in the follow-up of this application can be replaced with access network equipment, and the UE can be replaced with terminal equipment.
  • this application takes the core network equipment as an MME as an example for description.
  • the core network equipment is an AMF network element or other network elements
  • the core network equipment is an MME.
  • the present application provides a method for paging a UE, which can be used for paging a UE in an idle state.
  • the method includes the following steps:
  • Step 201 The MME determines that it needs to page a UE in an idle state.
  • Step 202 The MME sends a first paging message to the RAN.
  • the RAN can receive the first paging message.
  • the first paging message includes the identifier of the UE, and the first paging message is used to request to page the UE.
  • Step 203 The RAN determines at least one relay node.
  • the first paging message in step 202 includes the identification of at least one candidate relay node, and the RAN selects at least one relay node from the at least one candidate relay node.
  • the MME sends at least one candidate relay node to the RAN.
  • the RAN can select one or more relay nodes from the at least one candidate relay node sent by the MME.
  • Method 2 The RAN selects at least one relay node from at least one candidate relay node stored locally.
  • the first paging message does not carry the identification of the candidate relay node, but the identification of at least one candidate relay node is stored locally in the RAN, so the RAN can obtain the identification of at least one candidate relay node stored locally. , Select at least one relay node.
  • the at least one candidate relay node in the foregoing method 1 or method 2 may include one or more of the following candidate relay nodes:
  • the relay node to which the UE is connected can report to the RAN that the UE is connected to the relay node, so that the RAN can record the identity of the relay node.
  • the RAN can store the relationship between the UE and the connected relay node.
  • the RAN can record locally that the relay nodes that have been connected before UE1 is in the idle state include: relay node 1, relay node 2, and relay node 3. Therefore, the RAN can record locally that the UE is connected before the UE enters the idle state.
  • the identities of the relay nodes are Node1, Node2, and Node3.
  • the identifier of the relay node may be an identifier assigned by the RAN, a pre-configured identifier, or an identifier configured by its parent node.
  • the specific identifier may be an Internet Protocol address (Internet Protocol, IP) address or a cell radio network temporary identifier (CellRadioNetworkTemporaryIdentifier, C-RNTI), etc.
  • the preset condition may be that the measured quality is greater than a preset threshold. Therefore, when the UE is in the connected state, the identity of the relay node whose measured quality meets the preset condition can be sent to the RAN. Therefore, the RAN can locally record the relay node whose signal quality reported by the UE meets the preset condition.
  • the relay nodes whose signal quality reported by the UE meets the preset condition include Node4, Node5, and Node1.
  • the UE can report the identification of the relay node whose signal quality meets the preset condition to the RAN, and the RAN saves it, or the UE can report the identification of the relay node whose signal quality meets the preset condition to its connection And the relay node reports to the RAN.
  • the identifier of the candidate relay node that can be stored locally in the RAN includes: the identifier of the relay node connected before the UE enters the idle state, and/or the relay node whose signal quality reported by the UE meets the preset condition.
  • the RAN may also send the identifier of the candidate relay node stored locally to the MME, and then the MME stores the identifier of the candidate relay node.
  • Method 1 The RAN locally stores the identifier of the candidate relay node, and the MME does not store the identifier of the candidate relay node.
  • the RAN can adopt method 2 to determine at least one relay node.
  • Method 2 The RAN does not store the identifier of the candidate relay node locally, and the MME stores the identifier of the candidate relay node.
  • the RAN can adopt method 1 to determine at least one relay node.
  • Method 3 The RAN locally stores the identifier of the candidate relay node, and the MME stores the identifier of the candidate relay node.
  • the RAN may adopt method 1 or method 2 to determine at least one relay node.
  • Step 204 The RAN sends a second paging message to at least one determined relay node.
  • the at least one relay node can receive the second paging message.
  • the second paging message includes the identifier of the UE, and the second paging message is used to request to page the UE.
  • Step 205 The relay node determines the paging opportunity point of the UE.
  • the relay node here refers to one or more relay nodes determined by the RAN in step 203 above.
  • the relay node may determine the paging opportunity point according to the first paging assistance information, where the first paging assistance information includes a paging cycle and a paging density.
  • the following formula (1) can be used to determine the paging opportunity point:
  • nB Possible values of nB: T, T/2, T/4, T/8, T/16, T/32, T/64, T/128, T/256 whil(2)
  • the System Frame Number (SFN) is the paging opportunity point
  • T is the paging cycle
  • nB is the paging density
  • UE_ID is the identity of the UE
  • IMSI International Mobile Subscriber Identity (International Mobile Subscriber Identity)
  • mod is the modulo operation
  • div is the division operation.
  • the first paging assistance information used by the relay node can be obtained by any of the following methods:
  • Method 1 The first paging assistance information is pre-configured to the relay node by the RAN.
  • the RAN configures the first paging assistance information to the relay node. That is, the relay node receives the paging related configuration of the RAN for the relay node before receiving the second paging message of the RAN or sending a paging to the UE.
  • the paging cycle in this solution may be the default size, or it may be configured to have the same paging cycle in each public land mobile network (PLMN).
  • Method 2 The foregoing second paging message carries first paging assistance information.
  • the relay node uses the first paging assistance information in the second paging message to determine the paging opportunity point.
  • the relay node uses the first paging assistance information in the second paging message to determine the paging opportunity point; when the second paging message When the first paging assistance information is not carried, the relay node obtains locally the first paging assistance information previously configured by the RAN to determine the paging opportunity point.
  • Method 3 Part/all of the first paging assistance information is pre-configured by the RAN to the relay node, and some/all of the first paging assistance information is carried in the second paging message.
  • part of the first paging assistance information is pre-configured by the RAN, and another part of the first paging assistance information is carried by the second paging message.
  • the first paging assistance message configured or carried by the two parts may overlap and be selected by the relay node.
  • the RAN is pre-configured with a paging cycle
  • the second paging message also carries a paging cycle.
  • the subsequent node can select the paging cycle carried in the second paging message.
  • Method 4 The relay node determines part or all of the first paging assistance information.
  • the relay node may determine the paging cycle and the paging density by itself, or the relay node may determine the paging density and the paging cycle is configured by the RAN or carried by the second paging message.
  • Step 206 The relay node pages the UE according to the paging opportunity point.
  • the relay node can send a paging message (this application may be referred to as the third paging message) to the UE according to the paging opportunity point, and the third paging message is used to page the UE.
  • a paging message this application may be referred to as the third paging message
  • the relay node can also page the UE according to the paging opportunity point and the second paging assistance information.
  • the second paging assistance information here includes one or more of the following information: paging priority, number of paging repetitions, and tracking area indicator (TAI).
  • paging priority when the paging priority is higher, the time to page the UE is earlier, and when the paging priority is lower, the time to page the UE is later.
  • the number of paging repetitions refers to the maximum number of paging before the UE is successfully paged.
  • the number of paging repetitions may be the number of repetitions of a Physical Downlink Control Channel (PDCCH).
  • TAI is used to indicate the paging area to which the relay node belongs.
  • the second paging message sent by the RAN to the relay node includes the foregoing second paging assistance information.
  • the method for the RAN to obtain the second auxiliary information may be obtained locally, or may also be obtained from the above-mentioned first paging message, that is, the first paging message further includes the second paging auxiliary information.
  • the relay node may also broadcast a paging parameter to the UE.
  • the paging parameter is used by the UE to determine a paging opportunity point, and the paging parameter includes one or more of the following information: The paging cycle, paging density, TAI, and then the UE can use the same calculation method as the relay node to determine the paging opportunity point, and monitor the paging initiated by the relay node at the paging opportunity point. Therefore, after the relay node successfully pages the UE, the UE can establish an RRC connection with the relay node, or establish an RRC connection with the RAN, and then the UE enters a connected state.
  • the RAN can select one or more relay nodes from the candidate relay nodes, and then the relay nodes complete the paging of the UE, so that even if there are obstacles (such as buildings, etc.) between the RAN and the UE
  • the UE can also be paged through the relay, which can greatly improve the success rate of paging the UE.
  • the range of paging the UE can also be increased, so that the UE can be accurately paged without increasing the signaling overhead.
  • the UE in the idle state can initiate an RRC connection to the relay node or the RAN. Upon request, the UE enters the connected state.
  • the relay node where the UE resides changes or the cell under the RAN where it resides changes.
  • Method 1 The UE sends an RRC connection request message to the relay node currently camped on, and the RRC connection request message carries indication information, and then the relay node sends the indication information to the RAN.
  • the indication information is used to indicate that the relay node where the UE resides has changed or the cell under the RAN where the UE resides has changed.
  • the relay node may also send an RRC connection response message to the UE, and after further receiving the RRC connection complete message sent by the UE, the relay node sends the above-mentioned indication information to the RAN.
  • the RAN can learn that the relay node or cell where the UE resides has changed.
  • the RAN determines that the reason for the UE to initiate the establishment of the RRC connection is the update of the relay node. Therefore, the RAN can release the RRC connection of the UE to restore the UE to an idle state.
  • the indication information may also be referred to as a reason value for establishing a connection.
  • the relay node can identify the RRC connection request message, and parse the RRC connection request message to obtain the indication information carried therein. After the connection is released, the base station will report the relay node to which the UE is connected to the MME or update the connected relay node identifier saved by the UE.
  • Method 2 The UE sends an RRC connection request message to the relay node currently camped on, and the relay node forwards (or transparently transmits) the RRC connection request message to the RAN.
  • the relay node does not parse the RRC connection request message, but performs a forwarding function.
  • the RRC connection request message may also carry indication information, and the indication information is used to indicate that the relay node where the UE resides is changed or the cell under the RAN where the UE resides is changed. In this way, the RAN can learn that the relay node or cell where the UE resides has changed. Further, according to the indication information, the RAN determines that the reason for the UE to initiate the establishment of the RRC connection is the update of the relay node. Therefore, the RAN can release the RRC connection of the UE to restore the UE to an idle state.
  • the indication information may also be referred to as a reason value for establishing a connection. After the connection is released, the base station will report the relay node to which the UE is connected to the MME or update the connected relay node identifier saved by the UE.
  • Method 3 is based on the process of Method 1 or Method 2, but does not carry instruction information.
  • the RAN can send the current relay node identifier to the core network equipment (such as MME) , Or the RAN updates the relationship between the stored UE identifier and the relay node identifier.
  • the core network equipment such as MME
  • FIG. 2 The embodiment shown in FIG. 2 will be described in detail below with reference to specific examples.
  • the core network device is an MME as an example for description.
  • Step 301 The MME sends a UE context release command to the RAN.
  • the UE context release command includes the identity of the UE, and the UE context release command is used to instruct to release the context of the UE.
  • Step 302 The RAN sends an RRC connection release message to the UE.
  • the RAN sends an RRC connection release message to the relay node, and then the relay node transparently transmits the RRC connection release message to the UE.
  • the RAN sends an RRC connection release message to the relay node, and the relay node recognizes that the message is used to release the RRC connection of the UE, and the relay node sends an RRC connection release message to the UE.
  • the relay node can recognize that the message is used to release the RRC connection of the UE through the UE identifier (such as C-RNTI) carried in the RRC connection release message.
  • Step 303 The RAN sends instruction information to the relay node, where the instruction information is used to instruct to release the RRC connection of the UE under the relay node.
  • Step 303 is optional. Step 303 is executed when the relay node transparently transmits the RRC connection release message sent by the RAN in the above step 303; when the relay node can parse the RRC connection release message sent by the RAN in the above step 303, it does not execute This step 303.
  • Step 304 The relay node sends an RRC message to the RAN.
  • the RRC message carries the number of repetitions of the PDCCH used for paging, which is used to indicate the number of repetitions of the next page for the UE.
  • Step 305 After receiving the RRC message, the RAN sends the identification list of the relay node and the number of repetitions of the PDCCH paging to the MME through the UE context release complete message.
  • the relay node identifier list sent by the RAN to the MME may include one or more relay node identifiers.
  • the relay node here may be the relay node connected before the UE enters the idle state, and/or other relay nodes with good signal quality measured by the UE.
  • the RAN may directly send the identification list of the relay node and the number of repetitions of the paging PDCCH to the MME through the S1 interface, or may also send it to the MME in the form of ASN.1 encoding.
  • the RAN may only send the identification list of the relay node to the MME. Or, if the RAN does not receive the number of repetitions of the PDCCH used for paging returned by the relay node, the RAN determines the number of repetitions of the PDCCH used for paging, and relays the determined number of repetitions of the PDCCH used for paging. The node identification list is sent to the MME.
  • the identifier of the relay node included in the identifier list of the relay node here may also be referred to as the identifier of the candidate relay node for paging the UE.
  • Step 306 When there is a paging to the UE, the MME sends a paging message to the RAN.
  • the paging message includes the identification list of the relay node and/or the number of PDCCH repetitions used for paging.
  • step 307 after the RAN receives the paging message, it may preferentially select the relay node in the identifier list of the relay node to send the paging message.
  • the paging message contains the identifier of the UE and the paging cycle (such as Discontinuous Reception). Reception, DRX), enhanced discontinuous reception (Extended Discontinuous Reception, eDRX), PDCCH repetition times for paging, paging density (nB), paging priority and other information.
  • Step 308 After receiving the paging message sent by the RAN, the relay node calculates the paging opportunity point of the UE, and sends a page to the UE.
  • the RAN can expand the range until the UE is paged.
  • the UE can enter the connected state, and then update the location information of the UE stored on the network side (that is, update the UE’s stay Relay node or cell).
  • the UE can initiate random access and RRC connection establishment to the relay node or RAN, and then when the network side (RAN or core network) determines that the UE does not have services to perform, it will release the UE’s RRC connection, and then After the UE enters the idle state, the RAN can obtain the changed location information of the UE (that is, update the relay node or cell where the UE resides), and send the changed location information of the UE to the MME.
  • the UE when it initiates an RRC connection request, it can carry a new connection establishment reason.
  • the connection establishment reason is idle state routing update.
  • the RAN determines that the connection establishment is to notify the UE of routing information The change occurs (that is, the relay node or cell where the UE resides is updated) instead of a new service. Therefore, the RAN can immediately initiate RRC connection release. Further, the RAN also sends the changed location information of the UE to the MME.
  • the RAN can quickly page to the UE through the relay node, and the RAN sends the identifier of the connected relay node of the UE to the MME after the UE enters the idle state, and the MME can report it to the MME during the next paging.
  • this can increase the speed of RAN paging to UE.
  • the RAN does not send the identity list of the relay node to the MME, but the RAN saves the identity of the UE (such as Serving-Temporary Mobile Subscriber Identity, S-TMSI )) and the corresponding relationship between the relay node.
  • S-TMSI Serving-Temporary Mobile Subscriber Identity
  • the RAN can determine the relay node where the UE is located according to the identity of the UE in the paging message, and then the RAN sends a paging message to the relay node.
  • RAN can obtain S-TMSI in any of the following ways:
  • the UE sends an RRC connection request to the network side during the RRC connection establishment process, which carries S-TMSI.
  • the relay node obtains the S-TMSI carried in it, and then sends it to the RAN, or The relay node forwards the RRC connection request to the RAN, and then the RAN obtains the S-TMSI from the RRC connection request.
  • the UE does not send the S-TMSI when the RRC connection is established. Instead, the UE sends the S-TMSI to the relay node before the RRC connection is released, and then the relay node sends the S-TMSI to the RAN.
  • the RAN can use the TAI list or recommended cell information, etc. Expand the range for paging.
  • each network element described above includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.
  • the apparatus 400 may exist in the form of software or hardware.
  • the apparatus 400 may include: a processing unit 402 and a communication unit 403.
  • the communication unit 403 may include a receiving unit and a sending unit.
  • the processing unit 402 is used to control and manage the actions of the device 400.
  • the communication unit 403 is used to support communication between the device 400 and other network entities.
  • the device 400 may also include a storage unit 401 for storing program codes and data of the device 400.
  • the processing unit 402 may be a processor or a controller, for example, a general-purpose central processing unit (CPU), a general-purpose processor, a digital signal processing (digital signal processing, DSP), and an application specific integrated circuit (application specific integrated circuit). circuits, ASIC), field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the storage unit 401 may be a memory.
  • the communication unit 403 is an interface circuit of the device for receiving signals from other devices.
  • the communication unit 403 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.
  • the device 400 may be the relay node in any of the above embodiments, and may also be a chip for the relay node.
  • the processing unit 402 may be a processor
  • the communication unit 403 may be a transceiver, for example.
  • the transceiver may include a radio frequency circuit
  • the storage unit may be, for example, a memory.
  • the processing unit 402 may be, for example, a processor
  • the communication unit 403 may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit 402 can execute computer-executable instructions stored in the storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a relay node located in the chip.
  • External storage units such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • the apparatus 400 is a relay node, and the communication unit 403 of the relay node includes a sending unit and a receiving unit.
  • the receiving unit is configured to receive a paging message from an access network device, and the paging message includes The identification of the terminal device, the paging message is used to request to page the terminal device; the processing unit is used to determine the paging opportunity point of the terminal device; the sending unit is used to page the station according to the paging opportunity point ⁇ terminal equipment.
  • the processing unit is specifically configured to determine the paging opportunity point according to the first paging assistance information, where the first paging assistance information includes a paging cycle and a paging density.
  • the first paging assistance information is pre-configured by the access network device to the apparatus; or, the paging message includes the first paging assistance information.
  • the paging message further includes second paging assistance information
  • the second paging assistance information includes one or more of the following information: paging priority, paging repetition times , Tracking area identifier TAI; the processing unit is specifically configured to page the terminal device according to the paging opportunity point and the second paging assistance information.
  • the sending unit is further configured to broadcast a paging parameter to the terminal device before paging the terminal device according to the paging opportunity point, and the paging parameter is used for The terminal device determines the paging opportunity point.
  • the paging parameter includes one or more of the following information: paging cycle, paging density, and TAI.
  • the receiving unit is further configured to receive a radio resource control RRC connection request message from the terminal device, where the RRC connection request message includes indication information, and the indication information is used to indicate The relay node where the terminal device resides changes or the cell under the access network device where the terminal device resides changes.
  • the sending unit is further configured to send the indication information to the access network device.
  • the apparatus 500 may exist in the form of software or hardware.
  • the apparatus 500 may include: a processing unit 502 and a communication unit 503.
  • the communication unit 503 may include a receiving unit and a sending unit.
  • the processing unit 502 is used to control and manage the actions of the device 500.
  • the communication unit 503 is used to support communication between the device 500 and other network entities.
  • the device 500 may further include a storage unit 501 for storing program codes and data of the device 500.
  • the processing unit 502 may be a processor or a controller, for example, a CPU, a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the storage unit 501 may be a memory.
  • the communication unit 503 is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the communication unit 503 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.
  • the apparatus 500 may be the access network equipment in any of the above embodiments, and may also be a chip for the access network equipment.
  • the processing unit 502 may be, for example, a processor
  • the communication unit 503 may be, for example, a transceiver.
  • the transceiver may include a radio frequency circuit
  • the storage unit may be, for example, a memory.
  • the processing unit 502 may be, for example, a processor
  • the communication unit 503 may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit 502 can execute computer-executable instructions stored in the storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located in the access network device.
  • a storage unit outside the chip such as ROM or other types of static storage devices that can store static information and instructions, RAM, etc.
  • the apparatus 500 is an access network device, and the communication unit 503 of the access network device includes a sending unit and a receiving unit.
  • the receiving unit is configured to receive the first paging message from the core network device.
  • a paging message includes the identification of the terminal device, and the first paging message is used to request to page the terminal device;
  • the processing unit is used to determine at least one relay node; and the sending unit is used to send information to the at least one relay node.
  • the second paging message includes the identifier of the terminal device, and the second paging message is used to request to page the terminal device.
  • the first paging message includes the identification of at least one candidate relay node; the processing unit is specifically configured to select the at least one candidate relay node from the at least one candidate relay node Relay node.
  • the processing unit is further configured to determine that the terminal device enters an idle state before the receiving unit receives the first paging message from the core network device The identifier of at least one candidate relay node; the sending unit is further configured to send the identifier of the at least one candidate relay node to the core network device.
  • the processing unit is specifically configured to select the at least one relay node from at least one candidate relay node stored locally.
  • the at least one candidate relay node includes a relay node connected before the terminal device enters an idle state and/or a relay node whose signal quality reported by the terminal device meets a preset condition .
  • the second paging message further includes paging assistance information
  • the paging assistance information includes one or more of the following information: paging cycle, paging density, paging repetition Times, paging priority, TAI.
  • the receiving unit is further configured to receive indication information from the terminal device, where the indication information is used to indicate that the relay node on which the terminal device resides has changed or resided The cell under the access network device changes; the sending unit is further configured to send the updated relay node identifier of the terminal device to the core network device after the terminal device enters an idle state.
  • the receiving unit is further configured to: receive an RRC connection request message from the terminal device, where the RRC connection request message includes the indication information; or, receive from the relay The indication information of the node, the indication information is sent by the terminal device to the relay node through an RRC connection request message.
  • the apparatus 600 may exist in the form of software or hardware.
  • the apparatus 600 may include: a processing unit 602 and a communication unit 603.
  • the communication unit 603 may include a receiving unit and a sending unit.
  • the processing unit 602 is used to control and manage the actions of the device 600.
  • the communication unit 603 is used to support communication between the device 600 and other network entities.
  • the device 600 may further include a storage unit 601 for storing program codes and data of the device 600.
  • the processing unit 602 may be a processor or a controller, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the storage unit 601 may be a memory.
  • the communication unit 603 is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the communication unit 603 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.
  • the apparatus 600 may be the core network device in any of the above embodiments, and may also be a chip for the core network device.
  • the processing unit 602 may be, for example, a processor
  • the communication unit 603 may be, for example, a transceiver.
  • the transceiver may include a radio frequency circuit
  • the storage unit may be, for example, a memory.
  • the processing unit 602 may be a processor, for example, and the communication unit 603 may be an input/output interface, a pin, or a circuit, for example.
  • the processing unit 602 can execute computer-executable instructions stored in the storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a core network device located in the chip.
  • External storage units such as ROM or other types of static storage devices that can store static information and instructions, RAM, etc.
  • the apparatus 600 is a core network device, and the communication unit 603 of the core network device includes a sending unit and a receiving unit.
  • the processing unit is used to determine the terminal device that needs to be paged in an idle state; the sending unit is used to The access network device sends a paging message, the paging message includes the identification of the terminal device and the identification of at least one candidate relay node, the paging message is used to request to page the terminal device, the at least one The identifier of the candidate relay node is used to select at least one relay node for paging the terminal device.
  • the paging message further includes paging assistance information
  • the paging assistance information includes one or more of the following information: paging repetition times, paging priority, and TAI.
  • the at least one candidate relay node includes a relay node connected before the terminal device enters an idle state and/or a relay node whose signal quality reported by the terminal device meets a preset condition .
  • the receiving unit is configured to receive data from the access network before the processing unit determines that the terminal device in the spatial state needs to be paged, during the process that the terminal device enters the idle state The identifier of the at least one candidate relay node of the device.
  • the device 700 may exist in the form of software or hardware.
  • the apparatus 700 may include: a processing unit 702 and a communication unit 703.
  • the communication unit 703 may include a receiving unit and a sending unit.
  • the processing unit 702 is used to control and manage the actions of the device 700.
  • the communication unit 703 is used to support communication between the device 700 and other network entities.
  • the device 700 may further include a storage unit 701 for storing program codes and data of the device 700.
  • the processing unit 702 may be a processor or a controller, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the storage unit 701 may be a memory.
  • the communication unit 703 is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the communication unit 703 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.
  • the apparatus 700 may be the terminal device in any of the foregoing embodiments, and may also be a chip used for the terminal device.
  • the processing unit 702 may be a processor, for example, and the communication unit 703 may be a transceiver, for example.
  • the transceiver may include a radio frequency circuit
  • the storage unit may be, for example, a memory.
  • the processing unit 702 may be a processor, for example, and the communication unit 703 may be an input/output interface, a pin or a circuit, for example.
  • the processing unit 702 can execute computer-executable instructions stored in the storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a terminal device located outside the chip.
  • the storage unit such as ROM or other types of static storage devices that can store static information and instructions, RAM, etc.
  • the apparatus 700 is a terminal device, and the communication unit 703 of the terminal device includes a sending unit and a receiving unit, and a processing unit is used to determine the relay node where the terminal device resides or the access network device under which the terminal device resides.
  • the cell changes; the sending unit is configured to send an RRC connection request message to the access network device or the relay node.
  • the RRC connection request message includes indication information used to indicate that the relay node where the terminal device resides has changed or the access network device under which the terminal device resides has changed. The cell has changed.
  • the device 800 may be a relay node, or an access network device, or a core network device, or a terminal device in the foregoing embodiment.
  • the device 800 includes a processor 802, a communication interface 803, and a memory 801.
  • the device 800 may further include a communication line 804.
  • the communication interface 803, the processor 802, and the memory 801 may be connected to each other through a communication line 804;
  • the communication line 804 may be a peripheral component interconnection standard (peripheral component interconnect, PCI for short) bus or an extended industry standard architecture (extended industry standard architecture) , Referred to as EISA) bus and so on.
  • the communication line 804 can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one thick line is used in FIG. 8 to represent, but it does not mean that there is only one bus or one type of bus.
  • the processor 802 may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used to control the execution of the program of the present application.
  • the communication interface 803 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), Wired access network, etc.
  • RAN radio access network
  • WLAN wireless local area networks
  • Wired access network etc.
  • the memory 801 may be ROM or other types of static storage devices that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, or may be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory).
  • read-only memory EEPROM
  • compact disc read-only memory, CD-ROM
  • optical disc storage including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.
  • magnetic disks A storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the memory can exist independently and is connected to the processor through a communication line 804. The memory can also be integrated with the processor.
  • the memory 801 is used to store computer-executed instructions for executing the solutions of the present application, and the processor 802 controls the execution.
  • the processor 802 is configured to execute computer-executable instructions stored in the memory 801, so as to implement the method for paging a terminal device provided in the foregoing embodiment of the present application.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application program code, which is not specifically limited in the embodiments of the present application.
  • At least one (piece, species) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or Multiple.
  • Multiple refers to two or more, and other measure words are similar.
  • "a device” means to one or more such devices.
  • 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. For example, 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 a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.
  • the various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions.
  • the general-purpose processor may be a microprocessor, and optionally, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration achieve.
  • the steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other storage medium in the field.
  • the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium.
  • the storage medium may also be integrated into the processor.
  • the processor and the storage medium can be arranged in the ASIC.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil pour la recherche d'un équipement terminal. Le procédé comprend les étapes suivantes : un dispositif de réseau d'accès peut sélectionner un ou plusieurs nœuds relais à partir de nœuds relais candidats, puis le nœud relais termine la recherche d'un équipement terminal. De cette manière, même s'il existe un obstacle (comme un bâtiment) entre un dispositif de réseau d'accès et un équipement terminal, la recherche de l'équipement terminal peut être mise en œuvre par un relais, et ainsi, le taux de réussite de recherche de l'équipement terminal peut être considérablement amélioré. La plage de recherche de l'équipement terminal peut également être augmentée, de telle sorte que l'équipement terminal peut être recherché avec précision sans augmenter le surdébit de signalisation.
PCT/CN2019/079125 2019-03-21 2019-03-21 Procédé et appareil pour la recherche d'un équipement terminal WO2020186526A1 (fr)

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CN201980090091.3A CN113348707A (zh) 2019-03-21 2019-03-21 一种寻呼终端设备的方法及装置

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