WO2016161789A1 - Procédé pour réaliser une découverte directe de services prose, station de base et terminal - Google Patents
Procédé pour réaliser une découverte directe de services prose, station de base et terminal Download PDFInfo
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- WO2016161789A1 WO2016161789A1 PCT/CN2015/091564 CN2015091564W WO2016161789A1 WO 2016161789 A1 WO2016161789 A1 WO 2016161789A1 CN 2015091564 W CN2015091564 W CN 2015091564W WO 2016161789 A1 WO2016161789 A1 WO 2016161789A1
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- frequency
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- resource pool
- terminal
- direct discovery
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Definitions
- This document relates to Device-to-Device (D2D) technology, especially a method, base station and terminal for implementing proximity direct discovery.
- D2D Device-to-Device
- D2D device-to-device
- a D2D service (or a ProSe service) can work in a licensed band or an unlicensed band, allowing multiple D2D-enabled user equipments, that is, D2D User Equipment (D2D User Equipment) to have a network infrastructure or no network infrastructure.
- D2D business is carried out in the case of facilities.
- the D2D service generally includes: a PROSE DIRECT DISCOVERY technology and a D2D communication technology; wherein the proximity direct discovery technology refers to determining or determining that two or more D2D UEs are adjacent to each other (for example, D2D is available). Within the communication range), or a technique for determining or determining that the first user equipment is adjacent to the second user equipment.
- the D2D UE can discover the other party by sending or receiving a discovery signal or a discovery information. Under the coverage of the cellular network, the network can assist the D2D UE to perform proximity direct discovery.
- D2D communication technology refers to a technology in which some or all of the communication data between D2D UEs can communicate directly without going through the network infrastructure.
- Terminals in the vicinity can use D2D communication to bring many benefits to the terminal, such as higher speed, lower latency and lower power consumption, and also greatly improve the wireless resources of operators.
- D2D's Relay mode helps operators improve wireless coverage; for applications, using neighboring information in D2D communication can develop more attractive new services.
- the Public Safety system can also use D2D technology to enable communication between terminals without wireless coverage.
- Proximity direct discovery technology can be divided into two different ways, one is D2D Direct Discovery; the other is Evolved Packet Core (EPC), which is saved through the core network.
- EPC Evolved Packet Core
- the geographical location information of each terminal further provides a proximity direct discovery function according to the saved information.
- the carrier frequency for coverage As the serving cell (serving cell). ).
- the terminal needs to perform the proximity direct discovery process, according to the related technology, the neighboring direct discovery message can only be sent by using the information of the resource pool of the serving cell, thus, the D2D resource pool of the serving cell is inevitably aggravated.
- the load increases the risk of load unevenness between the carrier frequencies on the network side and reduces the performance of the D2D UE.
- the technical problem to be solved by the present invention is to provide a method, a base station and a terminal for implementing direct proximity discovery, so as to reduce the load of the D2D resource pool of the serving cell, thereby reducing the risk of load unevenness between the carrier frequencies on the network side, and improving the D2D. UE performance.
- a method of implementing proximity direct discovery including:
- the base station configures the sending resource pool information that is directly discovered by the inter-frequency neighbor and sends the sending resource pool information to the terminal.
- the terminal implements proximity direct discovery by using a resource pool directly discovered by the inter-frequency neighbor configured by the base station.
- the step of the sending, by the base station, the sending resource pool information to the terminal includes:
- the base station directly discovers the configured inter-frequency neighbor by using a radio resource control RRC message
- the sending resource pool information is sent to the terminal.
- the RRC message is a system broadcast message, or an RRC dedicated message.
- the method further includes:
- the base station interacts with other base stations to transmit the resource pool information directly discovered by the inter-frequency neighbor.
- the configuration information of the sending resource pool directly discovered by the inter-frequency neighboring is transmitted through the network management or transmitted through the inter-base station interface;
- the inter-base station interface is an X2 interface.
- the sending resource pool information directly discovered by the inter-frequency neighbor includes:
- the inter-frequency supports the transmission indication of the proximity direct discovery.
- the configuration information of the sending resource pool directly discovered by the inter-frequency neighbor includes: a time-frequency resource defined by the resource pool, and/or an inter-frequency synchronization time difference, and/or frequency information to which the inter-frequency frequency belongs, and Public land mobile network PLMN list information;
- the type of the sending resource pool includes terminal autonomous resource selection or scheduling resource configuration.
- the transmitting indication of the inter-frequency support neighboring direct discovery includes: frequency information to which the inter-frequency of the transmission directly adjacent to the direct discovery can be supported, and PLMN list information;
- the type of the inter-frequency transmission supporting the directly discovered transmission resource pool is the terminal autonomously selecting the resource.
- the terminal is in an idle state or a connected state.
- the sending resource pool information directly discovered by the inter-frequency neighbor is the configuration information of the sending resource pool directly discovered by the inter-frequency neighboring
- the resource pool directly configured by the inter-frequency neighboring configured by the base station implements the proximity direct discovery.
- the step includes: the terminal sending a proximity direct discovery message by using a sending resource pool directly discovered by the inter-frequency neighbor according to the configuration information, so as to implement proximity direct discovery.
- the sending resource pool information directly discovered by the inter-frequency neighbor is a transmission indication that the inter-frequency supports the proximity direct discovery
- the method further includes: the terminal supporting the transmission instruction of the proximity direct discovery according to the obtained inter-frequency support, and broadcasting the message by listening to the inter-frequency system Obtain a configuration letter of the sending resource pool adjacent to the direct discovery interest;
- the step of the terminal to implement the proximity direct discovery by using the resource pool directly discovered by the inter-frequency neighbors configured by the base station includes: sending, by the terminal, the neighboring direct discovery message by using the sending resource pool directly discovered by the inter-frequency neighbor according to the learned configuration information. To achieve proximity direct discovery.
- the sending resource pool information that is directly discovered by the inter-frequency neighbor is a sending indication that the inter-frequency supports the neighboring direct discovery, and the undivided is that the inter-frequency supports the transmission of the neighboring direct discovery;
- the method further includes: the terminal sending the first neighbor direct discovery request to the base station in the connected state;
- the configuration information of the directly discovered sending resource pool is sent to the terminal;
- the step of the terminal to implement the proximity direct discovery by using the resource pool directly discovered by the inter-frequency neighbors configured by the base station includes: the terminal sending the neighbor direct discovery message by using the sending resource pool directly discovered by the inter-frequency neighbor according to the received configuration information, to Achieve proximity direct discovery.
- the base station configures the configuration information of the transmission resource pool directly discovered by the inter-frequency neighboring, the method The method further includes: configuring a sending resource pool of the serving cell and sending the configured resource pool to the terminal.
- the base station configures the sending resource pool information that is directly discovered by the inter-frequency neighbor and sends the information.
- the method further includes: the terminal transmitting a second proximity direct discovery request to the base station in the connected state; the base station configuring the terminal to perform the inter-frequency measurement; the terminal reporting the measurement result to the base station, When the measurement result shows that the terminal enters the coverage of the desired frequency of the base station, the step of performing the base station configuring the transmission resource pool information of the inter-frequency direct discovery and transmitting the transmission resource pool information to the terminal is performed.
- the triggering condition that the base station configures the terminal to perform the inter-frequency measurement is: the terminal enters a coverage range of a frequency desired by the base station.
- the method further includes: the base station configuring the inter-frequency selection indication and sending the inter-frequency selection indication Giving the terminal;
- the method further includes: the terminal, according to the obtained inter-frequency selection indication, in the transmission indication of the inter-frequency support for direct discovery Determining the frequency of interest and the corresponding PLMN list information; the terminal is in the connected state, and the determined frequency of interest and the corresponding PLMN list information are carried in the neighboring direct discovery request and sent to the base station;
- the base station configures the configuration information of the transmission resource pool on the frequency and the frequency according to the carrier frequency load condition and the carrier frequency of interest of the terminal.
- the method further includes: the base station configuring the inter-frequency selection indication and sending the inter-frequency selection indication Give the terminal
- the method further includes: determining, by the terminal according to the obtained inter-frequency selection indication, in the sending indication of the inter-frequency support neighboring direct discovery
- the frequency of interest, and the determined frequency of interest and the list of PLMNs supported by the terminal are carried in the neighboring direct discovery request and sent to the base station; the base station according to the carrier frequency load condition and the carrier frequency of interest of the terminal, Configure the configuration information of the sending resource pool on the frequency and frequency for the terminal.
- a base station includes: a first processing module and a first sending module, where
- the first processing module is configured to: configure transmit resource pool information that is directly discovered by the inter-frequency neighbor and output the transmit resource pool information to the first sending module;
- the first sending module is configured to: send the configured sending resource pool information directly discovered by the inter-frequency neighbor to the terminal.
- the base station further includes a first receiving module, where
- the first receiving module is configured to: receive a first neighbor direct discovery request from the terminal, and output the first neighbor direct discovery request to the first processing module;
- the first processing module is further configured to: send configuration information of the sending resource pool directly discovered by the inter-frequency neighbor to the terminal by using the first sending module.
- the first processing module is further configured to: configure a sending resource pool of the serving cell and And being sent by the first sending module to the terminal.
- the first receiving module is further configured to receive a second neighbor direct discovery request from the terminal and output the second neighbor direct discovery request to the first processing module; receive the terminal from the terminal Measuring the report and outputting the measurement report to the first processing module;
- the first processing module is further configured to: configure the terminal to perform inter-frequency measurement, and continue to configure the inter-frequency proximity directly when the received measurement result indicates that the terminal enters a coverage range of a desired frequency of the base station The discovered resource pool information.
- the base station further includes a first receiving module
- the transmission resource pool information directly discovered by the inter-frequency neighbor is a transmission indication that the inter-frequency supports the proximity direct discovery
- the first processing module is further configured to: configure an inter-frequency selection indication and send the inter-frequency selection indication to the terminal via the first sending module; according to a carrier frequency load condition and a carrier frequency of interest of the terminal, Describe the terminal configuration frequency and the configuration information of the resource pool on the frequency;
- the first receiving module is further configured to: receive a third neighbor direct discovery request from the terminal and output the third neighbor direct discovery request to the first processing module.
- the first processing module is further configured to: exchange transmission resource pool information directly discovered by the inter-frequency proximity between the other base stations via the interaction interface;
- the inter-base station interface is an X2 interface.
- the sending resource pool information directly discovered by the inter-frequency neighbor includes:
- the inter-frequency supports the transmission indication of the proximity direct discovery.
- a terminal includes: a second processing module and a second receiving module, where
- the second receiving module is configured to: receive the sending resource pool information of the inter-frequency direct discovery from the base station, and output the sending resource pool information to the second processing module;
- the second processing module is configured to implement proximity direct discovery by using a resource pool directly discovered by the inter-frequency proximity configured by the base station.
- the sending resource pool information directly discovered by the inter-frequency neighbor is the configuration information of the sending resource pool directly discovered by the inter-frequency neighboring
- the second processing module is configured to implement proximity direct discovery by using a resource pool directly configured by the inter-frequency neighboring directly configured by the base station according to the following manner: sending, according to the configuration information, a neighboring direct discovery message by using a sending resource pool directly discovered by the inter-frequency neighboring, To achieve proximity direct discovery.
- the sending resource pool information directly discovered by the inter-frequency neighbor is an indication that the inter-frequency supports the direct discovery of the proximity
- the second processing module is configured to implement proximity direct discovery by using a resource pool of the inter-frequency proximity direct discovery configured by the base station in the following manner: according to the obtained inter-frequency support for direct transmission of the direct discovery, obtaining the proximity by listening to the inter-frequency system broadcast message The configuration information of the directly discovered sending resource pool; according to the configured configuration information, the neighboring direct discovery message is sent by using the sending resource pool directly discovered by the inter-frequency neighbor to implement the proximity direct discovery.
- the terminal when the transmission resource pool information directly discovered by the inter-frequency neighbor is the transmission indication that the inter-frequency supports the proximity direct discovery, and the difference is that the inter-frequency supports the transmission of the proximity direct discovery, the terminal further includes the second sending module. ,among them
- the second sending module is configured to: send a first neighbor direct discovery request to the base station after the terminal enters the connected state.
- the second receiving module is further configured to: receive a sending resource pool of the serving cell from the base station and output the same to the second processing module.
- the second sending module is further configured to: after the terminal enters the connected state, send the first neighbor direct discovery request to the base station;
- the second receiving module is further configured to: receive the inter-frequency measurement from the base station and output the inter-frequency measurement to the second processing module;
- the second processing module is further configured to: perform an inter-frequency measurement and report a measurement report to the base station.
- the second receiving module is further configured to: receive an inter-frequency selection indication from the base station, and output the inter-frequency selection indication to the second processing module;
- the second processing module is further configured to: determine a frequency of interest of the terminal and corresponding PLMN list information in a transmission indication that the inter-frequency support neighboring direct discovery; After the connection state is entered, the determined frequency of interest and the corresponding PLMN list information are carried in the third neighbor direct discovery request and sent to the base station via the second sending module.
- the second receiving module is further configured to: receive an inter-frequency selection indication from the base station, and output the inter-frequency selection indication to the second processing module;
- the second receiving module is further configured to: determine a frequency of interest of the terminal in a transmission indication that the inter-frequency support neighboring direct discovery; carry the determined frequency of interest and a list of PLMNs supported by the terminal directly in the vicinity
- the discovery request is sent to the base station.
- the technical solution of the present application includes the base station configuring the transmission resource pool information of the inter-frequency proximity direct discovery and transmitting the information to the terminal; the terminal uses the resource pool directly discovered by the inter-frequency proximity configured by the base station to implement the proximity direct discovery.
- the D2D terminal uses the non-serving cell resource pool to send the neighboring direct discovery message, thereby reducing the load of the D2D resource pool of the serving cell, thereby reducing the problem of load unevenness between the carrier frequencies of the network side. Risk and improve the performance of D2D UEs.
- FIG. 1 is a flowchart of a method for implementing proximity direct discovery according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a terminal of an embodiment of the present invention.
- FIG. 4 is a schematic flowchart of a first embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 5 is a schematic flowchart diagram of a second embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 6 is a schematic flowchart of a third embodiment and a fourth embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 7 is a schematic flowchart diagram of a fifth embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 8 is a schematic flowchart diagram of a sixth embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 9 is a schematic flowchart diagram of a seventh embodiment for implementing proximity direct discovery according to the present invention.
- FIG. 1 is a flowchart of a method for implementing proximity direct discovery according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
- Step 100 The base station configures the sending resource pool information that is directly discovered by the inter-frequency neighbor and sends the information to the terminal.
- the base station may send the configured transmission resource pool information directly discovered by the inter-frequency neighbor to the terminal by using a radio resource control (RRC) message.
- RRC radio resource control
- the RRC message may be a system broadcast message or an RRC dedicated message.
- the information about the sending resource pool directly discovered by the inter-frequency neighboring in the present step may be: the configuration information of the sending resource pool directly discovered by the inter-frequency neighbor, or the sending indication of the inter-frequency support for the direct direct discovery. among them,
- the configuration information of the sending resource pool includes but is not limited to: time-frequency resources defined by the resource pool, and/or inter-frequency synchronization time difference, and/or frequency information to which the inter-frequency belongs, and public land mobile network (PLMN, Public Land) Mobile Network) list information, etc.
- PLMN Public Land Mobile Network
- the type of the transmission resource pool includes UE Autonomous Resource Selection or Scheduled Resource Allocation.
- the transmission indication of the inter-frequency support for the proximity direct discovery includes: frequency information to which the inter-frequency transmission of the proximity discovery can be supported, and PLMN list information.
- the type of the transmission resource pool that the inter-frequency supports the direct discovery is the terminal autonomously selecting the resource.
- the terminal is in an idle state or a connected state.
- Step 101 The terminal implements proximity direct discovery by using a resource pool directly discovered by the inter-frequency neighbor configured by the base station.
- the transmission resource pool information directly discovered by the inter-frequency neighbor is the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor
- the step specifically includes: the terminal sends the neighbor direct discovery message by using the sending resource pool directly discovered by the inter-frequency neighbor according to the configuration information, so as to implement the proximity direct discovery.
- the terminal further includes: according to the obtained inter-frequency support for the direct discovery of the direct discovery, the terminal obtains the configuration information of the directly discovered discovery resource pool by listening to the inter-frequency system broadcast message.
- the step specifically includes: sending, according to the configuration information that the terminal listens to, the neighboring direct discovery message by using the sending resource pool directly discovered by the inter-frequency neighboring to implement the proximity direct discovery.
- the transmission resource pool information directly discovered by the inter-frequency neighbor is the transmission indication that the inter-frequency supports the proximity direct discovery, but the base station does not clearly distinguish that the inter-frequency supports the transmission of the proximity direct discovery, that is, the division does not distinguish that the serving cell supports the transmission of the proximity direct discovery. Or when the inter-frequency cell supports the transmission of the proximity direct discovery,
- the terminal further includes: the terminal entering the connected state sends a first proximity direct discovery request to the base station; and the base station sends the configuration information of the sending resource pool directly discovered by the inter-frequency neighbor to the terminal.
- the terminal may carry a proximity direct discovery request in a Side link UE Information message of the RRC message.
- the step specifically includes: sending, according to the received configuration information, a neighboring direct discovery message by using a sending resource pool directly discovered by the inter-frequency neighboring to implement proximity direct discovery.
- the D2D terminal uses the non-serving cell resource pool to send the neighboring direct discovery message, thereby reducing the load of the D2D resource pool of the serving cell, thereby reducing the load unevenness between the carrier frequencies on the network side. The risk of the problem and the performance of the D2D UE.
- the method of the embodiment of the present invention further includes: configuring a sending resource pool of the serving cell and transmitting the configuration to the terminal, while the base station is configured with the configuration information of the sending resource pool that is directly discovered by the inter-frequency neighboring.
- the specific implementation is well known to those skilled in the art and is not intended to limit the scope of the present invention. I won't go into details here.
- the terminal can also use the sending resource pool of the serving cell configured by the base station to implement the proximity direct discovery, thereby further ensuring the smooth implementation of the proximity direct discovery.
- the transmission resource pool information directly discovered by the inter-frequency neighbor in the step 100 is the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor.
- the method further includes: the terminal sends a second proximity direct discovery request to the base station in the connected state; the base station configures the terminal to perform the inter-frequency measurement, for example, the base station, according to the load condition between the carriers, hopes that the terminal sends the proximity direct discovery on a different frequency resource.
- the message is sent by the terminal to the base station.
- step 100 is performed.
- the trigger condition for the base station to configure the terminal to perform the inter-frequency measurement is that the terminal enters the coverage range of the desired frequency of the base station. For example, when the base station configures the inter-frequency measurement for the terminal, the base station configures the transmission resource pool of the serving cell for the terminal; for example, after the inter-frequency measurement triggers the reporting, the base station configures the configuration information of the transmission resource pool of the inter-frequency discovery for the terminal; For another example, after the terminal checks the inter-frequency resource pool authorization and/or the PLMN selection succeeds, the terminal covers the sending resource pool of the serving cell.
- the transmission resource pool information directly discovered by the inter-frequency proximity in the step 100 is a transmission indication that the inter-frequency supports the proximity direct discovery.
- Step 100 further includes: the base station configuring the inter-frequency selection indication and transmitting the indication to the terminal;
- the step 100 and the step 101 further include: the terminal determining, according to the inter-frequency selection indication, the frequency of the self-interest and the corresponding PLMN list information in the transmission indication of the inter-frequency support neighboring direct discovery; the terminal is determined in the connected state.
- the frequency of interest and the corresponding PLMN list information are carried in the neighboring direct discovery request and sent to the base station; the base station configures the configuration information of the transmission resource pool in the frequency and the frequency for the terminal according to the carrier frequency load condition and the carrier frequency of interest of the terminal. or,
- the step 100 and the step 101 further include: the terminal determining, according to the inter-frequency selection indication, the frequency of interest in the transmission indication of the inter-frequency support neighboring direct discovery, and determining the frequency of interest and the terminal itself.
- the list of PLMNs carried in the proximity direct discovery request is sent to the base
- the base station configures the configuration information of the transmission resource pool on the frequency and the frequency according to the carrier frequency load condition and the carrier frequency of interest of the terminal.
- the method in the embodiment of the present invention further includes:
- the transmission resource pool information directly discovered by the inter-frequency neighbor may be the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor, or the transmission indication of the inter-frequency support for the direct discovery.
- the configuration information of the sending resource pool directly discovered by the inter-frequency neighbors includes, but is not limited to, the time-frequency resource defined by the resource pool, and/or the inter-frequency synchronization time difference, and/or the frequency information to which the inter-frequency belongs, and the PLMN. List information, etc.
- the transmission indication of the inter-frequency support for the proximity direct discovery includes: the carrier frequency information to which the inter-frequency transmission of the proximity discovery can be supported, and the PLMN list information.
- the configuration information of the sending resource pool directly discovered by the inter-frequency neighbor may be transmitted through the network management system or through the inter-base station interface, where the inter-base station interface may be, for example, an X2 interface; or, more preferably, the basic flow of the type 2 may be used.
- 2Elementary Procedures Configuration information of the sending resource pool that is directly discovered by the inter-frequency inter-frequency neighbor.
- the method includes at least a first processing module 201 and a first sending module 202, where
- the first processing module 201 is configured to: configure the transmission resource pool information directly discovered by the inter-frequency proximity and output to the first sending module 202;
- the first sending module 202 is configured to: send the configured sending resource pool information directly discovered by the inter-frequency neighbor to the terminal.
- the base station further includes a first receiving module 203, configured to: receive the first neighboring direct discovery request from the terminal and output the first directing discovery request to the first processing module 201; correspondingly, the first processing module 201 is further configured to: directly discover the inter-frequency proximity
- the configuration information of the sending resource pool is sent to the terminal via the first sending module 202.
- the first processing module 201 is further configured to: configure a sending resource pool of the serving cell and send the data to the terminal via the first sending module 202.
- the first receiving module 203 is further configured to receive the second proximity direct discovery request from the terminal and output the same to the first processing module 201. Accordingly, the first processing module 201 is further configured to: configure the terminal to perform the inter-frequency measurement, and receive the The measurement result shows that the terminal continues to configure the transmission resource pool information of the inter-frequency proximity discovery when the terminal enters the coverage of the desired frequency of the base station; the first receiving module 203 is further configured to: receive the measurement report from the terminal and output the first to the first Processing module 201.
- the first processing module 201 is further configured to: configure the inter-frequency selection indication and send the same to the terminal by using the first sending module 202, according to the sending of the resource pool information that is directly discovered by the inter-frequency neighboring
- the frequency load situation and the carrier frequency of interest of the terminal are configured for the terminal and the configuration information of the resource pool on the frequency;
- the first receiving module 203 is further configured to: receive the third neighbor direct discovery request from the terminal and output the The first processing module 201.
- FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 2, the method includes at least a second processing module 301 and a second receiving module 302.
- the second receiving module 302 is configured to: receive the transmission resource pool information of the inter-frequency proximity discovery directly from the base station, and output the information to the second processing module;
- the second processing module 301 is configured to implement proximity direct discovery by using a resource pool directly discovered by the inter-frequency neighbor configured by the base station.
- the second processing module 301 is specifically configured to: according to the configuration information, send the transmission resource pool directly discovered by the inter-frequency proximity Proximity to discover messages directly to achieve proximity discovery.
- the second processing module 301 is specifically configured to: support the transmission indication of the proximity direct discovery according to the obtained inter-frequency support, and listen to the inter-frequency system, when the transmission resource pool information that is directly discovered by the inter-frequency neighbor is the transmission indication of the inter-frequency direct discovery.
- the broadcast message obtains the configuration information of the directly discovered discovery resource pool; according to the configured configuration information, the proximity discovery message is sent by using the transmission resource pool directly discovered by the inter-frequency neighbor to implement the proximity direct discovery.
- the base station When the transmission resource pool information directly discovered by the inter-frequency neighbor is the transmission indication of the inter-frequency direct support, the base station does not explicitly distinguish that the inter-frequency supports the transmission of the proximity direct discovery (that is, the distinction is that the serving cell supports the transmission of the proximity direct discovery, When the inter-frequency cell supports the transmission of the proximity direct discovery, the terminal further includes a second sending module 303.
- the second sending module 303 is configured to: after the terminal enters the connected state, send a first neighbor direct discovery request to the base station.
- the second receiving module 302 is further configured to: receive a sending resource pool of the serving cell from the base station, and output the same to the second processing module 301.
- the second sending module 303 is further configured to: after the terminal enters the connected state, send the first neighbor direct discovery request to the base station; correspondingly, the second receiving module 302 is further configured to: receive the inter-frequency measurement from the base station and output the second-frequency processing
- the module 301 is further configured to: perform inter-frequency measurement and report the measurement report to the base station.
- the second receiving module 302 is further configured to: receive the inter-frequency selection indication from the base station and output the same to the second processing module 301; correspondingly,
- the second processing module 301 is further configured to: determine a frequency of interest and corresponding PLMN list information in the transmission indication of the inter-frequency support neighbor direct discovery; and determine the frequency of interest and the corresponding after the terminal enters the connection state.
- the PLMN list information is carried in the third neighbor direct discovery request and sent to the base station via the second sending module 303. or,
- the second receiving module 302 is further configured to: determine a frequency of interest in the transmission indication of the inter-frequency support neighbor direct discovery; and carry the determined frequency of interest and the list of PLMNs supported by the terminal in the proximity direct discovery request. Send to the base station.
- the first processing module 301 is further configured to: exchange the transmission resource pool information directly discovered by the inter-frequency proximity between the other base stations via the interaction interface.
- the information about the sending resource pool directly discovered by the inter-frequency neighbor may be directly discovered by the inter-frequency neighboring Send configuration information of the resource pool, or send an indication of the inter-frequency direct support for the direct discovery.
- the interactive interface is an X2 interface, or the basic process of type 2 is used for interaction.
- FIG. 4 is a schematic flowchart of a first embodiment of the present invention for implementing direct proximity discovery.
- the first embodiment is a scenario in which a base station provides an inter-frequency configuration for an idle UE and is directly used by the terminal. As shown in FIG. 4, the following steps are specifically included:
- Step 400 The base station sends the configuration information of the sending resource pool directly discovered by the inter-frequency neighbor to the system broadcast message to the terminal.
- the type of the transmission resource pool directly discovered by the inter-frequency neighbor is the terminal autonomously selecting the resource.
- the configuration of the transmission resource pool on the other carrier frequency including the time-frequency resource defined by the resource pool, and/or the synchronization time difference between the inter-frequency channels, and/or by the eNB or the inter-base station interface, such as the X2 interface.
- Step 401 The terminal sends the neighbor direct discovery message by using the received transmission resource pool of the inter-frequency proximity direct discovery.
- the terminal When the terminal is in the idle state, if the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor in the system broadcast message is received, the type of the terminal is the resource type selected by the terminal autonomously. Therefore, the terminal can change the serving cell without changing the serving cell.
- the proximity direct discovery message is sent using the transmit resource pool on the received carrier frequency.
- FIG. 5 is a schematic flowchart of a second embodiment of the present invention for implementing direct proximity discovery.
- the second embodiment is a sending instruction that the base station provides the inter-frequency support for the direct discovery of the idle UE, and the terminal acquires and sends the inter-frequency SIB after the idle state is read.
- the scenario of the configuration information of the resource pool includes the following steps:
- Step 500 The base station carries the transmission indication that the inter-frequency support neighboring direct discovery is carried in the system broadcast message and sends the indication to the terminal.
- the type of the transmission resource pool directly discovered by the inter-frequency neighbor is the terminal autonomously selecting the resource.
- the base station Through the network management configuration or through the inter-base station interface, the base station, such as the eNB, obtains the transmission information that can support the proximity direct discovery on other carrier frequencies, including the different frequency that can support the transmission of the proximity direct discovery. Frequency information, and PLMN list information.
- Step 501 The terminal obtains the configuration information of the directly discovered discovery resource pool by listening to the inter-frequency system broadcast message according to the received inter-frequency support for the direct-discovery indication.
- the terminal may actively receive the inter-frequency system broadcast message according to the received inter-frequency support for the direct-discovery direct transmission, and obtain the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor.
- Step 502 The terminal sends the neighbor direct discovery message by using the obtained transmission resource pool of the inter-frequency proximity direct discovery.
- the terminal When the terminal is in the idle state, if the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor in the system broadcast message is received, the type of the resource is the terminal autonomously selected resource type, and therefore, the terminal may not change the serving cell.
- the neighboring direct discovery message is sent using the obtained transmission resource pool on the carrier frequency.
- FIG. 6 is a schematic flowchart of the first and third embodiments for implementing direct proximity discovery according to the present invention.
- the third embodiment is to guide the idle UE to enter the connected state, and the base station directly configures the configuration information of the resource pool in the dedicated signaling.
- the scenario, as shown in Figure 6, the specific implementation includes the following steps:
- Step 600 The base station carries the transmission indication that the inter-frequency support neighboring direct discovery is carried in the system broadcast message and sends the indication to the terminal.
- the base station broadcast does not distinguish whether the serving cell or the inter-frequency cell supports the transmission of the proximity direct discovery.
- a base station such as an eNB may indicate in system broadcast message 19 (SIB 19) that it supports proximity direct discovery, but does not provide configuration information for the resource pool.
- SIB 19 system broadcast message 19
- Step 601 The terminal enters a connected state, and sends a proximity direct discovery request to the base station.
- the terminal After the terminal receives the transmission indication supporting the proximity direct discovery in the system broadcast message, if the terminal needs to send the proximity direct discovery request (if the software of the upper layer of the terminal needs to transmit the proximity discovery request, the terminal will actively trigger the connection). state.
- the terminal may carry the proximity direct discovery request in the Side link UE Information message of the RRC message.
- Step 602 The base station receives the neighboring direct discovery request, and carries the configuration information of the sending resource pool that is directly discovered by the inter-frequency neighbor in the configuration message and sends the configuration information to the terminal.
- the base station may send configuration information of the intra-frequency and/or inter-frequency adjacent direct transmission resource pool to the terminal according to the load condition between the carriers;
- the base station may also preferentially select the configuration information of the appropriate sending resource pool according to its own arrangement and send the configuration information to the terminal.
- the heavy load sending resource pool is placed in the front end of the list, and the lightly loaded sending resource pool is arranged in the list back end. In this way, the terminal can select the sending resource pool according to the order of the list.
- the type of the sending resource pool includes terminal autonomous resource selection, or scheduling resource configuration.
- the configuration message in this step may be an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message, for example, a new field is used to indicate a transmission resource pool for inter-frequency proximity direct discovery.
- RRC Connection Reconfiguration RRC Connection Reconfiguration
- the sending resource pool of the discovery of the serving cell may also be carried in the configuration message and sent to the terminal.
- Step 603 The terminal sends the neighbor direct discovery request by using the obtained sending resource pool of the proximity discovery directly.
- the method when the terminal is in the connected state, the method further includes: checking a neighboring direct discovery resource pool configured by the base station, checking whether the authorization and/or the PLMN are allowed to be used. If the high priority transmission resource pool allocated by the base station for the terminal is not allowed to be used, the terminal continues to check the secondary priority resource pool. After the selection is successful, the terminal may send the proximity direct discovery message using the sending resource pool on the selected carrier frequency without changing the serving cell.
- the fourth embodiment is to guide the idle UE to enter the connected state, and the base station guides the terminal to read the inter-frequency SIB, which is different from the third embodiment:
- the base station determines, according to the load condition between the carriers, that the transmission needs to be sent on the inter-frequency, and configures the transmission instruction of the inter-frequency support for the direct discovery to the terminal;
- the base station Through the network management configuration or through the inter-base station interface, the base station, such as the eNB, obtains the transmission information that can support the proximity direct discovery on other carrier frequencies, including the frequency information and the PLMN list information to which the inter-frequency transmission that can support the direct discovery is supported.
- the base station can also configure the carrier frequency, that is, the sending resource pool discovered by the serving cell.
- the carrier frequency that is, the sending resource pool discovered by the serving cell.
- the type of the inter-frequency resource pool can only be an independent resource selection.
- the type of the transmission resource pool discovered by the serving cell may include terminal autonomous resource selection or scheduling resource configuration.
- the specific implementation of the embodiment is: when the terminal is in the connected state, check whether the grant and/or the PLMN in the sending indication of the inter-frequency direct support is directly allowed to be used. If the use is not allowed, the base station checks whether it is itself. The resource pool of the serving cell is also configured; if the authorization and/or the PLMN check is passed, the terminal reads the configuration information of the sending resource pool in the system broadcast resource information on the different frequency in the connected state;
- the terminal can transmit the proximity direct discovery message using the obtained transmission resource pool on the carrier frequency without changing the serving cell.
- FIG. 7 is a schematic flowchart of the fifth embodiment of the present invention for implementing direct proximity discovery.
- the base station in some scenarios, such as a CA, the base station requires the terminal to perform inter-frequency measurement, and only enters the inter-frequency range.
- the scenario of sending the packet is started, as shown in Figure 7, specifically:
- Step 700 The terminal sends a proximity direct discovery request to the base station in the connected state.
- the terminal terminal may carry the proximity direct discovery request in the Side link UE Information message of the RRC message.
- Step 701 The base station configures the terminal to perform inter-frequency measurement.
- the base station may, according to the load condition between the carriers, hope that the terminal sends a discovery message on an inter-frequency resource; the base station configures the inter-frequency measurement of the frequency for the terminal, and the trigger condition is: whether the terminal enters the coverage of the desired frequency of the base station.
- the base station when the base station configures the discovery resource of the serving cell for the terminal, the base station can directly use the resource, that is, the base station may configure the transmission resource of the discovery of the serving cell while configuring the terminal to perform measurement, and therefore, the terminal Once the configuration is received, the discovered transmission resources of the serving cell configured by the base station may be simultaneously used while starting the measurement;
- Step 702 The terminal reports the measurement result, and the base station configures the sending resource pool configuration by using the configuration message.
- the measurement report is triggered. After receiving the measurement report, the base station sends the configuration information of the transmission resource pool directly discovered by the inter-frequency neighbor to the terminal.
- the type of the resource pool includes terminal autonomous resource selection or scheduling resource configuration.
- the message reporting the measurement result may use the RRC measurement report message.
- the configuration message may be an RRC Connection Reconfiguration message, for example, a new field is used to indicate a sending resource pool that is directly discovered by the inter-frequency neighbor.
- the sending resource pool of the discovery of the serving cell may also be carried in the configuration message and sent to the terminal.
- the configuration message can also be a new RRC message.
- Step 703 The terminal sends the neighbor direct discovery message by using the obtained sending resource pool of the proximity discovery directly.
- the method when the terminal is in the connected state, the method further includes: checking a neighboring direct discovery resource pool configured by the base station, checking whether the authorization and/or the PLMN are allowed to be used. For example, if the resource pool allocated by the base station for the terminal is not allowed to be used in step 702, the terminal continues to use the resource pool of the serving cell configured in step 701; if the resource pool in step 702 is available, the terminal deletes the resource configured in step 701. The pool information is changed to the resource pool configured in step 702.
- the terminal may send the proximity direct discovery message using the sending resource pool on the selected carrier frequency without changing the serving cell.
- FIG. 8 is a schematic flowchart of a sixth embodiment of the present invention for implementing direct proximity discovery.
- the terminal may report a scene of interest frequency to the base station, as shown in FIG.
- the specific implementation includes the following steps:
- Step 800 The base station carries the transmission indication and the inter-frequency selection indication of the inter-frequency support for the direct discovery in the system broadcast message to the terminal.
- the transmission indication that the inter-frequency support neighboring direct discovery includes the frequency information and the PLMN list information that can support the transmission of the inter-frequency directly transmitted.
- the inter-frequency selection indication makes it unnecessary for the terminal to directly read the inter-frequency system broadcast message, but can select the frequency under the PLMN of its own interest according to the frequency and PLMN information in the transmission indication of the inter-frequency direct support for direct discovery.
- Step 801 The terminal sends a proximity direct discovery request to the base station in the connected state.
- the step includes: the terminal determining, according to the inter-frequency selection indication, the frequency of interest and the corresponding PLMN list information in the transmission indication that the inter-frequency support neighboring direct discovery. And will determine the feeling The frequency of interest and the corresponding PLMN list information are carried in the proximity direct discovery request and sent to the base station.
- the proximity direct discovery request may be carried in the Side link UE Information message of the RRC message.
- Step 802 The base station configures the configuration information of the sending resource pool for the terminal by using the configuration message.
- the step includes: the base station configuring the frequency and the transmission resource pool on the frequency according to the carrier frequency load condition and the carrier frequency of interest reported by the terminal.
- the type of the sending resource pool includes terminal autonomous resource selection or scheduling resource configuration.
- the configuration message may be an RRC Connection Reconfiguration message, for example, a new field is used to indicate a sending resource pool that is directly discovered by the inter-frequency neighbor.
- the sending resource pool of the discovery of the serving cell may also be carried in the configuration message and sent to the terminal.
- the configuration message can also be a new RRC message.
- the step further includes: the base station simultaneously configuring a resource pool of the serving cell for the terminal.
- Step 803 The terminal sends the neighbor direct discovery message by using the obtained sending resource pool of the proximity discovery directly.
- the method when the terminal is in the connected state, the method further includes: checking a neighboring direct discovery resource pool configured by the base station, checking whether the authorization and/or the PLMN are allowed to be used. For example, if the inter-frequency resource pool allocated by the base station for the terminal is not allowed to be used in step 802, the terminal continues to use the resource pool of the serving cell configured in step 801; if the resource pool in step 802 is available, the terminal uses the inter-frequency resource pool. .
- the terminal may send the proximity direct discovery message using the sending resource pool on the selected carrier frequency without changing the serving cell.
- FIG. 9 is a schematic flowchart of a seventh embodiment of implementing proximity discovery in the present invention.
- a scenario in which a terminal can report a list of PLMNs supported by a terminal to a base station by broadcasting an inter-frequency selection indication is as shown in FIG. 9.
- the specific implementation includes the following steps:
- Step 900 The base station carries the transmission indication and the inter-frequency selection indication of the inter-frequency support for the direct discovery in the system broadcast message to the terminal.
- Step 901 The terminal provides a list of PLMNs supported by the terminal while transmitting the proximity direct discovery request to the base station in the connected state.
- the step includes: the terminal has obtained a list of PLMNs supported by the terminal before the process, and the terminal carries the information in the proximity direct discovery request and sends the information to the base station.
- proximity to direct discovery please The request can be carried in the Side link UE Information message of the RRC message.
- Step 902 The base station configures the configuration information of the sending resource pool for the terminal by using the configuration message.
- the step includes: the base station configuring the frequency and the sending resource pool on the frequency according to the carrier frequency load situation and the list of PLMNs supported by the terminal reported by the terminal.
- the type of the sending resource pool includes terminal autonomous resource selection or scheduling resource configuration.
- the configuration message may be an RRC Connection Reconfiguration message, for example, a new field is used to indicate a sending resource pool that is directly discovered by the inter-frequency neighbor.
- the sending resource pool of the discovery of the serving cell may also be carried in the configuration message and sent to the terminal.
- the configuration message can also be a new RRC message.
- the step further includes: the base station simultaneously configuring a resource pool of the serving cell for the terminal.
- Step 903 The terminal sends the neighbor direct discovery message by using the obtained sending resource pool of the proximity discovery directly.
- the method when the terminal is in the connected state, the method further includes: checking a neighboring direct discovery resource pool configured by the base station, checking whether the authorization and/or the PLMN are allowed to be used. For example, if the inter-frequency resource pool allocated by the base station for the terminal is not allowed to be used in step 902, the terminal continues to use the resource pool of the serving cell configured in step 901; if the resource pool in step 902 can be used, the terminal uses the inter-frequency resource pool. .
- the terminal may send the proximity direct discovery message using the sending resource pool on the selected carrier frequency without changing the serving cell.
- the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the terminal, so that the terminal can perform any of the above methods for implementing proximity direct discovery.
- the embodiment of the invention also discloses a carrier carrying the computer program.
- the D2D terminal uses the non-serving cell resource pool to send the neighboring direct discovery message, thereby reducing the load of the D2D resource pool of the serving cell, thereby reducing the problem of load unevenness between the carrier frequencies of the network side. Risk and improve the performance of D2D UEs. Therefore, the present invention has strong industrial applicability.
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Abstract
La présente invention concerne un procédé pour réaliser une découverte directe de ProSe (services basés sur la proximité), une station de base et un terminal. Le procédé consiste en ce que : une station de base configure des informations de groupe de ressources de transmission pour une découverte directe de ProSe de différentes fréquences et transmet lesdites informations à un terminal ; et le terminal réalise la découverte directe de ProSe à l'aide d'un groupe de ressources pour une découverte directe de ProSe de différentes fréquences configurée par la station de base. La solution technique selon la présente invention permet d'obtenir qu'un terminal D2D transmette un message de découverte directe de ProSe à l'aide du groupe de ressources d'une cellule non de desserte. De cette façon, la charge d'un groupe de ressources D2D d'une cellule de desserte est réduite, ce qui réduit le risque d'avoir un problème de charge non uniforme entre des fréquences porteuses du côté du réseau, et améliore les performances d'un UE D2D.
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WO2021134732A1 (fr) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Système, appareil, et procédé de planification de ressource |
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CN103582077B (zh) * | 2012-08-07 | 2017-01-25 | 华为技术有限公司 | 小区间d2d通信的方法、用户设备和基站 |
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