WO2017000591A1 - Procédé d'envoi d'informations et terminal - Google Patents

Procédé d'envoi d'informations et terminal Download PDF

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Publication number
WO2017000591A1
WO2017000591A1 PCT/CN2016/076605 CN2016076605W WO2017000591A1 WO 2017000591 A1 WO2017000591 A1 WO 2017000591A1 CN 2016076605 W CN2016076605 W CN 2016076605W WO 2017000591 A1 WO2017000591 A1 WO 2017000591A1
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WO
WIPO (PCT)
Prior art keywords
terminal
relay node
service area
ecgi
area identifier
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Application number
PCT/CN2016/076605
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English (en)
Chinese (zh)
Inventor
朱进国
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中兴通讯股份有限公司
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Filing date
Publication date
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Publication of WO2017000591A1 publication Critical patent/WO2017000591A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • This document relates to the field of information transmission technologies, and in particular, to a method and terminal for transmitting information.
  • Direct communication between devices in the vicinity using Device to Device can bring many benefits to the terminal, such as higher speed, lower latency and lower power consumption, and greatly improved.
  • the radio resource efficiency of the operator, D2D's Relay mode helps operators to improve wireless coverage; for applications, the use of proximity information in the D2D communication process can develop more attractive new services.
  • the Public Safety system can also use D2D technology to enable communication between terminals without wireless coverage.
  • FIG. 1 is a schematic diagram of a D2D Relay architecture related to 3GPP (The 3rd Generation Partnership Project) in the related art. As shown in FIG. 1 , the functions of the key network elements are described below.
  • 3GPP The 3rd Generation Partnership Project
  • Remote terminal also called User Equipment (UE), which is in the no-mobile signal coverage, supports D2D discovery and communication through PC5 (D2D interface between terminal and terminal) interface and other terminals.
  • the terminal can also communicate with the network through the Relay node.
  • UE User Equipment
  • Relay node also called a relay node, the node is a terminal, is within the coverage of mobile signals, supports other remote terminals to communicate with the network through the terminal, the Relay node supports Relay to discover the broadcast, and the remote terminal reads the broadcast information. Select the appropriate Relay node and communicate with the network through the node.
  • Base station Provides wireless coverage for the Relay node, and can also perform radio resource authorization and allocation for D2D discovery or communication when the Relay node performs communication.
  • the base station transmits downlink data by broadcasting, which is conducive to saving air interface resources.
  • the air interface between the base station and the terminal is a Uu port.
  • Core network mainly responsible for the registration of the Relay node, assigning IP addresses and bearer establishment, Relay
  • the node communicates through the core network and the external network.
  • the interface between the base station and the core network is an S1 interface.
  • Cluster communication server The main functions of the cluster service include the management of the cluster service group, call setup, release, and management.
  • the UE and the cluster communication server are PC1 interfaces, and the UE initiates registration with the cluster communication server by using the interface, and obtains service-related information from the cluster communication server, and the UE also initiates group call and request call rights to the cluster communication server through the interface. .
  • FIG. 2 is a flowchart of a related art remote terminal accepting eMBMS communication by accessing a relay, and the process includes the following steps:
  • Step 201 The Relay node is in a wireless coverage area, obtains D2D broadcast resources from the base station, and performs D2D broadcast, where the broadcast carries related information of the Relay node, where the information includes the layer 2 identifier of the Relay node, access service information, and wireless Layer information, etc.
  • the remote terminal in the uncovered area receives the broadcast information, it can select a suitable Relay node to serve according to the information.
  • Step 202 After the remote terminal selects a Relay node, the layer 2 user address of the Relay node is used to establish a layer 2 communication link with the Relay node, and in the process, the remote terminal may be authenticated.
  • Step 203 The Relay node allocates an IP address to the remote terminal, and the address may be an IPv4 address or an IPv6 address.
  • Step 204 The remote terminal can perform unicast communication through the Relay node and the network, including registering with the machine communication server, sending a call request, and initiating a call.
  • Step 205 In the unicast communication process, the remote terminal may initiate a request for cell information request to the Relay node.
  • Step 206 The Relay node accepts the request, and then returns a request cell information response to the remote terminal, with a timer indicating that the remote terminal re-initiates the requesting cell information request to the Relay node after the timer expires.
  • the Relay node periodically broadcasts an E-UTRAN Cell Global Identifier (E-UTRAN) E-UTRAN (Evolved Universal Terrestrial Radio Access Network) global identifier.
  • E-UTRAN E-UTRAN Cell Global Identifier
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • Step 208 After receiving the cell information ECGI of the Relay node, the remote terminal reports the cell information ECGI to the cluster communication server.
  • Step 209 After receiving the cell information of the plurality of remote terminals, the cluster communication server determines a cell list that needs to initiate multicast communication by analyzing users in each cell.
  • Step 210 The cluster communication server initiates an eMBMS communication process to the core network. Before this, the cluster communication server maps the cell identifier to the SAI (Service Area Identity) through static configuration, and then the TMGI of the service ( The Temporary Mobile Group Identity, the cell information ECGI, and the corresponding SAI are sent to the core network.
  • SAI Service Area Identity
  • TMGI Temporary Mobile Group Identity
  • the SAI is used for routing in the core network, and the MME (Mobility Management Element), the MCE (Multi-cell/multicast Coordination Entity), and the corresponding base station are processed. Then, the base station to the core network and the eMBMS channel of the trunking communication server are established, and the base station broadcasts the TMGI information in the MCCH (Multipoint Control Channel).
  • MME Mobility Management Element
  • MCE Multi-cell/multicast Coordination Entity
  • the trunking communication server may initiate eMBMS communication, and the base station performs eMBMS broadcast.
  • Step 212 The cluster communication server initiates a service information update request to the remote terminal, where the TMGI (Temporary Mobile Group Identity) and the corresponding SAI list are included.
  • TMGI Temporal Mobile Group Identity
  • step 213 the far terminal initiates a TMGI monitoring request to the Relay node, with the requested TMGI and the SAI list.
  • Step 214 The Relay node monitors the service area information of the local cell in the SIB15 (System Information Broadcast) broadcasted by the base station. If the SAI of the local cell is in the requested SAI list, the MCCH in the local cell can monitor the TMGI. Then, the TMGI monitoring request is accepted, and the TMGI monitoring request response is returned to the remote terminal, where the layer 2 multicast communication address and the timer value are allocated, and the timer value indicates that the remote terminal re-initiates the TMGI monitoring request when the timer expires.
  • SIB15 System Information Broadcast
  • step 215 the Relay node attempts to read the TMGI in the MCCH channel.
  • Step 216 if the Relay node detects the corresponding TMGI, it is performed on the PC5 interface.
  • TMGI broadcast content is TMGI.
  • Step 217 The Relay node simultaneously reads the eMBMS communication content of the base station, and then forwards the content on the PC5 interface.
  • the multicast address is the layer 2 multicast address allocated by the Relay node in step 214.
  • step 218 the far terminal listens to the TMGI broadcast of the Relay node, and then accepts the multicast communication on the layer 2 multicast address allocated in step 214.
  • step 219 the remote terminal requests the cluster communication server to stop the unicast communication.
  • step 210 the cluster communication server needs to statically configure the mapping relationship between ECGI and SAI. Because the number of ECGIs is large, the configuration is complicated, and the flexibility is not flexible, and the cluster communication server may be a third party. This mapping relationship is unknown.
  • the technical problem to be solved by the present invention is to provide a method and terminal for transmitting information to avoid static configuration of ECGI and SAI by the cluster communication server.
  • a method of transmitting information including:
  • the relay node receives a cell information request message initiated by the terminal
  • the relay node reads the global identifier ECGI of the E-UTRAN cell and the service area identifier of the cell;
  • the relay node sends the ECGI and the service area identifier to the terminal.
  • the step of the relay node sending the ECGI and the service area identifier to the terminal includes:
  • the relay node sends the ECGI and the service area identifier to the terminal by means of a broadcast or a message.
  • a relay node includes a receiving module, a reading module, and a sending module, wherein
  • the receiving module is configured to: receive a cell information request message initiated by the terminal;
  • the reading module is configured to: read a global identifier ECGI of the E-UTRAN cell and the cell The identity of the business area where it is located;
  • the sending module is configured to: send the ECGI and the service area identifier to the terminal.
  • the sending module is configured to send the ECGI and the service area identifier to the terminal according to the following manner:
  • the ECGI and the service area identifier are sent to the terminal by means of a broadcast or a message.
  • a method of transmitting information including:
  • the terminal receives the global identifier ECGI of the E-UTRAN cell sent by the relay node and the service area identifier of the cell;
  • the terminal sends the ECGI and the service area identifier to a trunking communication server.
  • the method further includes:
  • the terminal determines that the service area identifier is in the service area identifier list, the terminal initiates a temporary user group identity monitoring request to the relay node, where the request carries the temporary user group identifier and the service A list of zone IDs.
  • a terminal includes a receiving module and a sending module, wherein
  • the receiving module is configured to: receive an E-UTRAN cell global identifier ECGI and a corresponding service area identifier sent by the relay node;
  • the sending module is configured to: send the ECGI and the service area identifier to the cluster communication server.
  • the receiving module is further configured to: receive a temporary user group identifier returned by the cluster communication server in the service update, and a service area identifier list corresponding to the temporary user group identifier;
  • the determining module is configured to: determine whether the service area identifier is in the service area identifier list, and if yes, notify the sending module;
  • the sending module After receiving the notification from the determining module, the sending module sends a temporary user group identity monitoring request to the relay node, where the request carries the temporary user group identifier and the service area identifier list.
  • a computer program comprising program instructions that, when executed by a terminal, cause the terminal to perform any of the above-described methods of transmitting information on the terminal side.
  • a computer program comprising program instructions that, when executed by a relay node, cause the relay node to perform the method of transmitting information on any of the relay node sides described above.
  • the Relay node sends its own SAI information to the remote terminal, and then the remote terminal sends the ECGI and the corresponding SAI to the cluster communication server, so that the cluster can be avoided.
  • the communication server statically configures ECGI and SAI.
  • FIG. 1 is a schematic diagram of a related art D2D relay architecture
  • FIG. 2 is a flowchart of a related art remote terminal accepting eMBMS communication by accessing a relay;
  • FIG. 3 is a flowchart of a method for transmitting information according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of a Relay node according to an embodiment of the present invention.
  • Figure 6 is a schematic illustration of the far terminal of the present invention.
  • FIG. 3 is a flowchart of a method for transmitting information according to Embodiment 1 of the present invention.
  • the Relay node periodically broadcasts ECGI and SAI, including the following steps:
  • Step 301 The remote terminal initiates a request for cell information request to the Relay node.
  • Step 302 The Relay node accepts the request, and then returns a request cell information response to the remote terminal, with a timer indicating that the remote terminal re-initiates the request cell information request to the Relay node after the timer expires.
  • Step 302 The Relay node reads the ECGI, and periodically broadcasts the current cell information ECGI; the Relay node simultaneously reads the local cell SAI in the SIB15, and then periodically broadcasts the SAI.
  • the broadcasts of ECGI and SAI may be sent together or separately.
  • the relay node reads the ECGI from the system broadcast message of the base station, and the method for the specific reading belongs to the prior art, and details are not described herein.
  • Step 303 After receiving the cell information ECGI of the Relay node and the corresponding SAI, the remote terminal reports the cell information ECGI and the corresponding SAI to the cluster communication server.
  • Step 304 After receiving the cell information of the multiple remote terminals, the cluster communication server determines the cell list that needs to initiate the multicast communication by analyzing the users in each cell.
  • Step 305 The cluster communication server initiates an eMBMS communication process with the TMGI, the target cell identifier, and the corresponding SAI.
  • SAI is used for routing in the core network, finds the MME and MCE that handles the multicast of the cell, and then establishes a multicast channel from the base station to the core network and the cluster communication server.
  • the base station broadcasts TMGI information in the MCCH channel; the cluster communication server performs eMBMS communication. .
  • Step 307 The cluster communication server initiates a service information update request to the remote terminal, where the TMGI of the current eMBMS communication and the corresponding SAI list are included.
  • Step 308 The remote terminal determines whether it is necessary to initiate a TMGI monitoring request to the Relay node, and mainly determines whether the SAI received in step 303 is received in the SAI list in step 307, and then determines to initiate the TMGI monitoring request, otherwise the monitoring request is not initiated. .
  • Step 309 if a monitoring request needs to be initiated, the remote terminal initiates a TMGI monitoring request to the Relay node, with the requested TMGI and the SAI list in step 307.
  • the subsequent steps are the same as steps 214-219.
  • the remote terminal needs to trigger to report the cell information and the ECGI to the cluster communication server after the change of the Relay node is changed.
  • the remote terminal re-initiates the acquisition of the cell information request after the timer received in step 302 times out.
  • a Relay node sends SAI information to a remote terminal in requesting a cell information response, including the following steps:
  • Step 401 The remote terminal initiates a request for cell information request to the Relay node.
  • Step 402 The Relay node accepts the request, and then returns a request cell information response to the remote terminal, with a timer indicating that the remote terminal re-initiates the request cell information request to the Relay node before the timer expires.
  • the SAI of the current cell is also included, optionally, with the ECGI of the current cell.
  • step 403 the Relay node periodically broadcasts the current cell information ECGI.
  • the remote terminal may detect that the Relay camping cell changes from the cell broadcast of the Relay node, and then triggers re-acquisition of the cell information request to the Relay node, and reacquires the ECGI and SAI of the current cell. Then, the cell information and ECGI are reported again to the cluster communication server. The remote terminal may also re-initiate the acquisition of the cell information request after the timer received in step 402 times out.
  • FIG. 5 is a schematic diagram of a Relay node according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • the receiving module 501 is configured to: receive a cell information request message initiated by the terminal;
  • the reading module 502 is configured to: read an E-UTRAN cell global identifier ECGI and a corresponding SAI;
  • the sending module 503 is configured to: send the ECGI and the SAI to the terminal.
  • the sending module 503 sends the ECGI and the SAI to the terminal by means of a broadcast or a message.
  • FIG. 6 is a schematic diagram of a remote terminal according to the present invention. As shown in FIG. 6, the terminal in this embodiment includes:
  • the receiving module 601 is configured to: receive the ECGI sent by the relay node and the corresponding SAI;
  • the sending module 603 is configured to: send the ECGI and SAI to the cluster communication server.
  • the remote terminal further includes: a determining module 602,
  • the receiving module 601 is further configured to: receive a temporary user group identifier returned by the cluster communication server in a service update, and a corresponding SAI list;
  • the determining module 602 is configured to: determine whether the SAI is in the SAI list, and if yes, notify the sending module;
  • the sending module 603 after receiving the notification, initiates a TMGI monitoring request to the relay node, and carries the TMGI and the SAI list.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, which, when executed by the terminal, enable the terminal to perform the above-mentioned arbitrary information transmission method.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, which, when executed by the relay node, enable the relay node to perform the above-mentioned arbitrary information transmission method.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the far terminal can know the current cell ECGI and SAI of the Relay, After the ECGI and the SAI are sent to the cluster communication server, the cluster communication server is configured to statically configure the mapping relationship between the ECGI and the SAI. At the same time, before the remote terminal initiates the TMGI monitoring request, the remote terminal can pre-determine whether the current SAI of the relay can monitor the service corresponding to the TMGI. Information, thereby reducing TMGI listening request signaling on the PC5 interface.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the Relay node sends its own SAI information to the remote terminal, and then the remote terminal sends the ECGI and the corresponding SAI to the cluster communication server, so as to avoid the static of the cluster communication server.
  • Configure ECGI and SAI. Therefore, the present invention has strong industrial applicability.

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

Abstract

La présente invention concerne un procédé d'envoi d'informations et un terminal. Le procédé comprend: un noeud relais recevant un message de requête d'informations de cellule émis par un terminal; le noeud relais lisant un identifiant global de cellule E-UTRAN (ECGI) et une identification de zone de service (SAI) correspondante; et le noeud relais envoyant l'ECGI et l'identification de zone de service au terminal. Dans la présente invention, un noeud relais envoie des informations SAI le concernant à un terminal distant, et le terminal distant envoie ensuite simultanément un ECGI et une SAI correspondante à un serveur de communication en grappe, ce qui permet d'éviter une situation où le serveur de communication en grappe configure de manière statique ECGI et SAI.
PCT/CN2016/076605 2015-06-30 2016-03-17 Procédé d'envoi d'informations et terminal WO2017000591A1 (fr)

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CN201510373118.3 2015-06-30
CN201510373118.3A CN106332221A (zh) 2015-06-30 2015-06-30 一种信息发送的方法和终端

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