WO2016019739A1 - 用户状态的处理方法及装置 - Google Patents

用户状态的处理方法及装置 Download PDF

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Publication number
WO2016019739A1
WO2016019739A1 PCT/CN2015/077011 CN2015077011W WO2016019739A1 WO 2016019739 A1 WO2016019739 A1 WO 2016019739A1 CN 2015077011 W CN2015077011 W CN 2015077011W WO 2016019739 A1 WO2016019739 A1 WO 2016019739A1
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Prior art keywords
state
base station
information
resource
status
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PCT/CN2015/077011
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English (en)
French (fr)
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陈琳
陈玉芹
高音
罗薇
黄莹
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中兴通讯股份有限公司
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Publication of WO2016019739A1 publication Critical patent/WO2016019739A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for processing a user state.
  • D2D Device-to-Device
  • the application of D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology can work in licensed or unlicensed frequency bands, allowing multiple D2D-enabled user equipments (D2D User Equipment, D2D UEs) to be directly connected to the network infrastructure or without network infrastructure. Discovery / direct communication. There are three main application scenarios for D2D:
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG. 1;
  • the UE relay transmission in the weak/uncovered area allows the UE4 with poor signal quality to communicate with the network through the UE3 with network coverage nearby, which can help the operator to expand coverage and increase capacity;
  • the D2D technology generally includes a D2D discovery technology and a D2D communication technology, wherein the D2D discovery technology refers to a technology for determining/determining whether the first user equipment is adjacent to the second user equipment.
  • D2D user equipment can discover each other by transmitting or receiving discovery signals/information;
  • D2D communication technology refers to a technology in which some or all communication data between D2D user equipments can communicate directly without using a network infrastructure.
  • the base station allocates a dedicated resource (second resource allocation mode) to the UE for D2D discovery/communication.
  • the first resource allocation mode is usually pre-allocated by the base station or the system to a D2D resource pool, and the D2D UE participating in the D2D discovery/communication listens to the resource pool and acquires the D2D transmission resource in a competitive manner.
  • the second resource allocation mode is configured by the base station to allocate suitable D2D resources to the UE according to the request of the UE.
  • the related art does not give a systematically perfect solution to the state processing of D2D UEs performing D2D discovery/communication.
  • the present invention provides a method and apparatus for processing a user state to at least solve the above technical problems.
  • a method for processing a user state including: a base station monitoring a D2D state and a cellular state of a user equipment (User Equipment, UE for short), wherein the D2D state is used to indicate the Whether the UE has a D2D transmission or a D2D reception, and the cellular state is used to indicate whether the enhanced radio access bearer (E-RAB) of the UE has a data packet transmission or reception;
  • E-RAB enhanced radio access bearer
  • the base station initiates a release S1 connection and/or a radio resource control RRC connection.
  • the base station monitors the D2D state of the UE, where the base station monitors whether the D2D resource configured for the UE has exceeded a validity period, and the base station determines, according to the received D2D state information of the UE, that the a D2D state of the UE, wherein the D2D state is determined to be in an active state when the D2D state information indicates an active state; otherwise, determining that the D2D state is in an inactive state; the base station monitoring D2D of the UE is not Whether the active timer has timed out.
  • the monitoring, by the base station, whether the D2D resource configured for the UE has exceeded the validity period includes: after receiving the D2D resource configuration request information from the UE and configuring the D2D resource for the UE, the base station starts or Restarting a D2D resource validity period configured for the UE; determining that the D2D state of the UE is in an inactive state if the D2D resource validity period timer expires or not, otherwise determining that the D2D state of the UE is active status.
  • the base station monitors whether the D2D inactivity timer of the UE times out, including: the base station starts or restarts the D2D inactivity timing of the UE when receiving or transmitting at least one of the following information: The D2D resource configuration request, the D2D buffer report request, the D2D state information, the D2D resource configuration information, and the D2D resource grant grant information; when detecting that the D2D inactivity timer expires or is not started, the base station determines that The D2D state of the UE is in an inactive state, otherwise it is determined that the D2D state of the UE is in an active state.
  • the method before starting or restarting the D2D inactivity timer of the UE, the method further includes: the base station setting the D2D inactivity timer according to a default configuration; and establishing the RRC connection as a D2D
  • the base station sets a D2D inactivity timer for the UE that has a duration less than a system default configuration.
  • the D2D inactivity timer multiplexes the same timer with a cellular inactivity timer for monitoring cellular activity status.
  • the monitoring, by the base station, the D2D state of the UE includes: the base station receiving the D2D resource configuration request information sent by the UE; the base station sending the resource configuration information, where the resource configuration information is carried in the The D2D inactivity timer is sent by the base station to the UE; or the base station sends the D2D inactivity timer information to the UE.
  • the D2D status reporting indication information further carries a D2D status reporting period.
  • the base station initiates a release S1 connection and/or a radio resource control RRC connection, including: if the D2D state and the cellular state are both in an inactive state, the base station sends a mobility management entity MME
  • the transmission cause value is a UE D2D inactive and cellular inactive UE context release request; if the D2D state is active and the cellular state is in an inactive state, the base station sends a reason value to the MME for cellular inactive UE context release. request.
  • a method for processing a user state including: a user equipment UE monitoring a device-to-device D2D state and a cellular state of the UE, wherein the D2D state is used to indicate the UE Whether there is D2D transmission or D2D reception, the cellular status is used to indicate whether the radio access bearer of the UE has a transmission or reception of a data packet; the UE sends the D2D state to a base station; or, after detecting the When the D2D state and the cellular state are both in an inactive state, the release of the radio resource control RRC connection is initiated.
  • the UE monitors the D2D status of the UE, including: the UE receives the following information from the base station: D2D resource configuration and D2D resource validity period information, or D2D status reporting indication and reporting period, or D2D Inactivity timer information, or D2D resource authorization grant information.
  • the sending, by the UE, the D2D status of the UE to the base station includes one of the following: when the UE receives the D2D resource configuration and the D2D resource validity period information, the UE is in the D2D resource validity period.
  • the D2D resource is used for D2D transmission and/or reception; when the D2D resource validity period expires, the UE sends a D2D resource configuration request to the base station; when receiving the D2D state reporting indication and reporting period
  • the UE periodically sends a current D2D state to the base station; when the D2D inactivity timer information is received and the D2D inactivity timer expires, the UE sends a D2D state to the base station. Information about the status of the activity.
  • the UE monitors the D2D state of the UE, and includes: when the UE receives the D2D inactivity timer information, setting a local D2D inactivity timer according to the D2D inactivity timer information, otherwise Setting the D2D inactivity timer according to a default configuration; when the UE receives one of the following information, the UE starts the D2D inactivity timer: D2D resource configuration and D2D resource validity period information, and D2D status reporting indication And the reporting period, the D2D inactivity timer information; or the UE restarts the D2D inactivity timer when receiving the D2D resource grant information or each time the D2D data packet is sent; if the D2D inactivity timing of the UE The device times out, determining that the D2D state is in an inactive state, otherwise, the D2D state is in an active state.
  • the UE monitors the D2D state of the UE, including: the UE sets different D2D inactivity timers for D2D discovery and D2D communication; and the UE sets different D2D inactivity timings for D2D transmission or reception.
  • the D2D state is determined to be inactive if the D2D inactivity timer of the UE times out, otherwise the D2D state is active.
  • the sending, by the UE, the D2D state of the UE to the base station includes: the UE periodically reporting the D2D state to the base station according to the reporting period; or, the UE is only in the The D2D state is reported when the D2D state is active.
  • the D2D status reported by the UE is further used to indicate the following information: a D2D transmission status and/or a D2D reception status; or a D2D discovery status and/or a D2D communication status.
  • the sending, by the UE, the D2D state of the UE to the base station includes: when the D2D state is in an inactive state, the UE sends, to the base station, a wireless release reason that the D2D activity is in an inactive state.
  • the resource controls the RRC Connection Release Request message.
  • a processing apparatus for a user state which is applied to a base station, and includes: a monitoring module configured to monitor a device-to-device D2D state and a cellular state of the user equipment UE, wherein the D2D state Determining whether the UE has D2D transmission or D2D reception, where the cellular status is used to indicate whether the enhanced radio access bearer E-RAB of the UE has a transmission or reception of a data packet; a release module, It is arranged to initiate a release S1 connection and/or a radio resource control RRC connection when the D2D state is detected and/or the cellular state is in an inactive state.
  • a monitoring module configured to monitor a device-to-device D2D state and a cellular state of the user equipment UE, wherein the D2D state Determining whether the UE has D2D transmission or D2D reception, where the cellular status is used to indicate whether the enhanced radio access bearer E-RAB of the UE has a transmission or reception of
  • a processing apparatus for a user state comprising: a monitoring module, configured to monitor a device-to-device D2D state and a cellular state of the UE, wherein the D2D state And configured to indicate whether the UE has D2D transmission or D2D reception, where the cellular state is used to indicate whether the radio access bearer of the UE has a transmission or reception of a data packet, and the sending module is configured to send the D2D state to the base station.
  • a release module configured to initiate a release of the radio resource control RRC connection upon detecting that both the D2D state and the cellular state are in an inactive state.
  • the base station when the base station detects that the D2D state and/or the cellular state is in an inactive state, the base station initiates the release of the S1 connection or the RRC connection; or the UE reports the D2D state to the base station when it detects that it is in an inactive state.
  • the technical means solves the technical problem that the solution for processing the state of the D2D communication or the discovered UE is not solved in the related art, so that the base station can accurately determine the active state of the UE and perform processing to ensure the D2D transmission. Going smoothly.
  • FIG. 1 is a schematic diagram of a device-to-device discovery or communication architecture according to the related art
  • FIG. 2 is a flowchart of a method for processing a user state according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of a processing apparatus for a user state according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for processing another user state according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of another apparatus for processing a user state according to an embodiment of the present invention.
  • Example 6 is a signaling flowchart of determining a D2D activity state according to a resource validity period according to Example 1 of the present invention
  • FIG. 7 is a flowchart of a base station process for determining a D2D activity state according to a resource validity period according to the first embodiment of the present invention
  • FIG. 9 is a flowchart of a base station process for determining a D2D active state according to a UE status report and an inactivity timer according to Embodiment 2 of the present invention.
  • FIG. 10 is a flowchart of configuring a D2D inactivity timer to monitor a D2D activity state of a UE in the example 3 of the present invention
  • FIG. 11 is a flowchart of updating a D2D inactivity timer according to a BSR report by a base station according to Embodiment 4 of the present invention.
  • Figure 13 is a flow chart showing the initiation of the S1 connection release in the example 6D2D of the present invention and the cellular inactive state;
  • Figure 14 is a flow chart showing the initiation of S1 connection release in the cellular inactive state of Example 7 of the present invention.
  • the base station In the cellular system, the base station detects the active state of the UE. If all the evolved radio access bearers (E-RABs) are found to have no data packet transmission and reception at the time of system configuration, the base station will initiate the S1. And the release of the Radio Resource Control (RRC) connection.
  • E-RABs evolved radio access bearers
  • RRC Radio Resource Control
  • the specific process is that the base station sends a UE context release request to the mobility management entity (Mobile Management Entity, MME for short). After receiving the message, the MME sends a UE context release command to the base station, and the base station may subsequently send an RRC connection release message to the UE.
  • MME Mobile Management Entity
  • the UE is required to release the RRC connection first, after which the base station sends a UE context release complete message to the MME, after which the UE's S1 connection and the RRC connection are released. If the UE does not have cellular communication, that is, there is no data packet transmission and reception on the E-RAB, but the UE is performing D2D discovery/communication, if the eNB still follows the previous UE inactivity determination criterion, the eNB may perform D2D discovery/communication in the UE. The RRC connection and the S1 connection release are initiated during the process. In order to avoid this situation, the base station needs to detect the D2D activity status of the UE while monitoring whether all E-RABs have data packets transmitted and received.
  • the D2D discovery defines two resource allocation modes: Type1 and Type2, which respectively correspond to the first resource allocation mode and the second resource allocation mode described in the background art.
  • the D2D communication also defines two resource allocation modes: Mode1 and Mode2, which respectively correspond to the second resource allocation mode and the first resource allocation mode described in the background art.
  • the base station or the system pre-allocates a D2D resource pool of the UE, and the D2D UE participating in the D2D discovery/communication listens to the resource pool, and acquires the D2D transmission resource in a competitive manner.
  • the UE configures UE-specific semi-persistent resources for the UE. In both cases, after the UE acquires the D2D resource pool or the semi-persistent resource configuration information, the base station can hardly perceive the active state of the D2D UE.
  • the UE needs to send the D2D buffer status report to the base station before using the D2D resource.
  • the base station can determine the D2D activity status of the UE according to the received D2D buffer status and the D2D resource dynamically allocated for the UE.
  • the related technology does not provide a perfect solution for the user state processing method of the specific D2D UE.
  • the embodiment of the invention provides a method and a device for processing a user state to solve the above technical problem.
  • FIG. 2 is a flow chart of a method of processing a user state according to an embodiment of the present invention. As shown in Figure 2, the method includes:
  • Step S202 The base station monitors a D2D state and a cellular state of the UE, where the D2D state is used to indicate whether the UE has D2D transmission or D2D reception, where the cellular state is used to indicate whether the E-RAB of the UE has a data packet transmission or reception.
  • Step S204 when the D2D state is detected and/or the cellular state is in an inactive state, the base station initiates release of the S1 connection and/or the RRC connection.
  • the base station can initiate the release of the D1 connection and/or the RRC connection when the state in which the UE activity is monitored is inactive. Therefore, the user state of the D2D user equipment can be processed in time to ensure D2D transmission. Going smoothly.
  • the method for monitoring the D2D state of the UE by the base station is different.
  • the base station monitors whether the D2D resource configured for the UE has exceeded the validity period.
  • the base station determines the state of the UE activity according to the received D2D state information of the UE. Wherein, when the D2D state information is indicated as being in an active state, determining that the D2D state is in an active state; otherwise, determining that the D2D state is in an inactive state; and the base station monitoring whether the D2D inactivity timer of the UE times out.
  • the base station monitors whether the D2D resource configured for the UE has exceeded the validity period, and may be in the following implementation manner, but is not limited thereto: after receiving the D2D resource configuration request information from the UE and configuring the D2D resource for the UE, the base station starts or restarts to configure the UE.
  • the D2D resource validity period timer if the D2D resource validity period timer expires or is not started, it is determined that the D2D state of the UE is in an inactive state; otherwise, it is determined that the D2D state of the UE is in an active state.
  • the base station monitors whether the D2D inactivity timer of the UE times out, including: the D2D inactivity timer of the UE when starting or restarting the UE when receiving or transmitting at least one of the following information: D2D resource configuration request, D2D buffer report request, D2D Status information, D2D resource configuration information, D2D resource grant information; when it is detected that the D2D inactivity timer expires or is not started, the base station determines that the D2D state of the UE is in an inactive state, otherwise determines that the D2D state of the UE is active. status.
  • the base station before starting or restarting the D2D inactivity timer of the UE, one of the following processes may be performed: the base station sets the foregoing D2D inactivity timer according to a default configuration; When the D2D discovers or communicates, or when the UE sends the D2D inactivity timer indication information or the power saving indication information to the base station to the base station, the base station sets a D2D inactivity timer whose duration is less than the system default configuration.
  • the above D2D inactivity timer and the cellular inactivity timer for monitoring the cellular activity state may multiplex the same timer.
  • the base station monitors the D2D state of the user equipment, where the base station receives the D2D resource configuration request information sent by the UE, and the base station sends the resource configuration information to the UE, where the resource configuration information carries the D2D resource validity period; or the base station sends the D2D state report indication information to the UE. Or, the base station sends D2D inactivity timer information to the UE.
  • the D2D status reporting indication information further carries a D2D status reporting period.
  • Step S204 is implemented in multiple manners.
  • the method may be implemented by: when the D2D state and the foregoing cellular state are in an inactive state, the base station sends a cause value to the MME as the UE D2D. Inactive or cellular inactive UE context release request; if the D2D state is active and the above cellular state is in an inactive state, the base station sends a reason value of the cellular inactive UE context release request to the MME.
  • a processing device for a user state is further applied to a base station.
  • the device includes: a monitoring module 30 configured to monitor a D2D state and a cellular state of the UE, where the D2D state And configured to indicate whether the UE has D2D transmission or D2D reception, the cellular status is used to indicate whether the UE's E-RAB has a transmission or reception of a data packet, and the release module 32 is connected to the monitoring module 30, and is configured to monitor the D2D state. And when the cellular state is in an inactive state, the release of the S1 connection and/or the RRC connection is initiated.
  • each of the above modules may be implemented in the form of software or hardware.
  • the following manners may be implemented, but are not limited thereto: the monitoring module 30 and the release module 32 are respectively located in the first processor and the first In the second processor; or, the monitoring module 30 and the release module 32 are located in the same processor.
  • FIG. 4 is a flow chart of a method of processing another user state in accordance with an embodiment of the present invention. As shown in FIG. 4, the method includes:
  • Step S402 the UE monitors the D2D state and the cellular state of the UE, where the D2D state is used to indicate whether the UE has D2D transmission or D2D reception, and the cellular state is used to indicate whether the radio access bearer (RAB) of the UE has a data packet transmission or receive;
  • RAB radio access bearer
  • Step S404 The UE sends the foregoing D2D state to the base station, or initiates release of the radio resource control RRC connection when both the D2D state and the cellular state are detected to be in an inactive state.
  • step S402 There are various implementations of step S402, for example,
  • the UE receives the following information from the base station: D2D resource configuration and D2D resource validity period information, or D2D status reporting indication and reporting period, or D2D inactivity timer information, or D2D resource grant information.
  • the UE transmitting the D2D state of the UE to the base station includes one of the following: when the UE receives the D2D resource configuration and the D2D resource validity period information, the UE uses the D2D resource to perform D2D transmission and/or reception during the D2D resource validity period; When the validity period of the D2D resource expires, the UE sends a D2D resource configuration request to the base station; when receiving the D2D state reporting indication and the reporting period, the UE periodically sends the current D2D state to the base station; and receives the D2D inactivity timing. If the D2D inactivity timer expires, the UE sends information to the base station that the D2D state is inactive.
  • the UE When receiving the D2D inactivity timer information, the UE sets a local D2D inactivity timer according to the D2D inactivity timer information. Otherwise, the D2D inactivity timer is set according to the default configuration; the UE receives the following When the information is received, the UE starts the D2D inactivity timer: the D2D resource configuration and the D2D resource validity period information, or the D2D state reporting indication and reporting period, or the D2D inactivity timer information; or the UE receives the D2D resource grant information.
  • the D2D inactivity timer is restarted; if the D2D inactivity timer of the UE times out, it is determined that the D2D state is in an inactive state; otherwise, the D2D state is in an active state.
  • the UE sets different D2D inactivity timers for D2D discovery and D2D communication; the UE sets different D2D inactivity timers for D2D transmission or reception; wherein if the D2D inactivity timer of the UE times out, it is determined that the D2D state is in the Inactive state, otherwise, the above D2D state is active.
  • the UE may send the D2D state of the UE to the base station according to the foregoing monitoring process.
  • the UE may periodically report the D2D state to the base station according to the reporting period. Alternatively, the UE reports the D2D state only when the D2D state is active. .
  • the D2D status reported by the UE is further used to indicate the following information: a D2D transmission status and/or a D2D reception status; or a D2D discovery status and/or a D2D communication status.
  • Step S404 may be expressed in the following form, but is not limited thereto: when the D2D state is in an inactive state, the UE sends a radio resource control RRC connection release request message that the release reason is that the D2D activity is in an inactive state to the base station.
  • a processing device for the user state is further provided, and the processing device is applied to the UE.
  • the processing device includes: a monitoring module 50 configured to monitor a D2D state and a cellular state of the UE, where The D2D state is used to indicate whether the UE has D2D transmission or D2D reception, and the cellular status is used to indicate whether the RAB of the UE has a transmission or reception of a data packet.
  • the sending module 52 is connected to the monitoring module 50 and configured to send the D2D to the base station.
  • the release module 54 is coupled to the monitoring module 50 and configured to initiate a release of the radio resource control RRC connection when both the D2D state and the cellular state are detected to be inactive.
  • This embodiment provides a D2D state monitoring process of the UE. The following is explained in detail by way of Example 1 to Example 5.
  • UE1 and UE2 are within the D2D discovery range of each other.
  • UE1 wants to transmit D2D discovery information, and therefore sends a message containing D2D resource configuration request information to the eNB, as shown in FIG. 6.
  • the eNB After receiving the message, the eNB determines that the D1D discovery resource of Type 1 needs to be configured for UE1. The eNB sends a message including the D2D resource configuration information to the UE1, where the Type1 sending resource pool information and the resource configuration information validity period are included.
  • the UE1 After acquiring the D2D resource configuration, the UE1 sets and starts the D2D resource effective timer according to the received resource validity period information, and then obtains the resource from the Type1 resource pool for D2D transmission according to the received Type1 sending resource pool information.
  • UE1 After the D2D resource valid timer expires, UE1 needs to release the D2D resource configuration information. If UE1 also wishes to continue transmitting the D2D discovery signal, UE1 needs to resend the message containing the D2D resource configuration request information to the eNB.
  • the eNB From the perspective of the eNB, after the eNB sends a message including the D2D resource configuration information of the validity period of the D2D resource to the UE1, it is necessary to set and start/restart the validity period timer corresponding to the D2D UE discovery, as shown in FIG. 7. Then, it is determined whether the inactivity timer maintained by the eNB for the UE active state (the timer is simultaneously active for the UE and the active state of the D2D communication) expires. If the timeout has expired, the base station further determines the D2D resource validity period timer. Whether to time out, if not yet timed out, restart the Inactivity timer for the UE active state. If the D2D resource validity period timer has also expired, the eNB detects that the UE is in the D2D inactive state and the cellular inactive state, and can start to initiate the UE1 for UE1. The S1/RRC connection is released.
  • UE1 and UE2 are within the D2D discovery range of each other.
  • UE1 wants to transmit D2D discovery information, and therefore sends a message containing D2D resource configuration request information to the eNB, as shown in FIG.
  • the eNB After receiving the message, the eNB determines that the D2D discovery resource of Type 2B needs to be configured for UE1. The eNB sends a message including the D2D resource configuration information to the UE1, where the Type2B resource information and the D2D status report indication are included. It should be noted that the D2D status reporting indication may also include D2D reporting period information.
  • the UE1 After acquiring the D2D resource configuration, the UE1 sets and starts the D2D state reporting timer according to the received D2D reporting period information, and then performs D2D transmission according to the received Type2B transmission resource information.
  • the UE1 monitors the D2D state, for example, the UE1 sets the D2D inactivity timer according to the D2D inactivity timer information pre-configured by the system or received from the eNB. After UE1 acquires the D2D resource configuration, UE1 starts a D2D inactivity timer. The D2D inactivity timer is restarted whenever UE1 transmits a D2D packet.
  • the UE1 determines the state of the D2D inactivity timer. If the D2D inactivity timer of the UE1 times out, the UE1 determines that the user equipment is in an inactive state, and if the D2D inactivity timer is running, it is determined. The user equipment is in an active state, after which UE1 sends a message containing D2D status information to the eNB.
  • UE1 may also set different D2D inactivity timers for D2D discovery or D2D communication, as well as for D2D transmission or reception settings. Different D2D inactivity timers.
  • the D2D status information indication reported by the UE1 may indicate that the D2D transmission and/or reception is active/inactive, indicating that the D2D discovery and or the D2D communication are in an active/inactive state.
  • the corresponding indication information may be arbitrarily combined in the above case.
  • the UE1 may report the D2D status only when it is in the D2D active state.
  • the D2D status report may not be sent.
  • the eNB From the perspective of the eNB, after the eNB sends a message including the D2D status reporting indication information to the UE1, it is necessary to set and start/restart the D2D Inactivity timer corresponding to the UE1, as shown in FIG. Then, it is checked whether the D2D status of UE1 is received. If the D2D status report is received, it is determined according to the D2D status report information that if the D2D status information indicates that the UE1D2D status is active, the eNB determines that the D2D status of the UE1 is active, otherwise the eNB determines that the D2D status of the UE1 is in an inactive state.
  • the eNB determines that the D2D status of the UE1 is active as long as the D2D status report of the UE1 is received.
  • the eNB After determining that the UE1 is in the D2D active state, the eNB restarts the D2D Inactivity timer corresponding to the UE1. If the D2D reporting of the UE1 has not been received after the D2D Inactivity timer of the UE1 expires, the eNB determines that the UE1 is in the D2D inactive state, and if the cellular Inactivity timer of the UE1 also times out, the eNB may start to initiate the S1/RRC for the UE1. The connection is released.
  • the staff (Officer) A, B, C, and D use the public safety UE1, UE2, UE3, and UE4 with D2D functions.
  • Officers A, B, C, and D all subscribe to the public safety service, and UE1, UE2, and UE3 are all configured to belong to the D2D communication group X.
  • Office A wants to initiate a multicast call to inform other nearby Office related information corresponding to D2D communication group X.
  • the UE1 of the Officer A sends a D2D Resource Configuration Request message to the eNB, and the eNB configures the Mode 2 resource for it.
  • the eNB configures the D2D Inactivity timer for the UE1, as shown in FIG.
  • the UE1 After acquiring the D2D resource configuration, the UE1 sets and starts the D2D inactivity timer according to the received D2D Inactivity timer information. The D2D inactivity timer is restarted whenever UE1 transmits and/or receives a D2D packet.
  • the UE1 determines that the user equipment is in an inactive state, and the UE1 sends a message including the D2D inactivity status information to the eNB. If UE1 is also in an inactive state at this time, UE1 may initiate a release of the RRC connection, and the release cause is D2D inactivity.
  • Office A, B, C, and D use public safety UE1, UE2, UE3, and UE4 with D2D capabilities. Officers A, B, C, and D are all subscribed to public safety services, and UE1, UE2, and UE3 are all The configuration belongs to D2D communication group X. After Office A, B, C, and D arrive at the rescue location, Office A wants to initiate a multicast call to inform other nearby Office related information corresponding to D2D communication group X.
  • UE1 of Officer A sends a message containing D2D resource configuration request information to the eNB, as shown in FIG. After receiving the message, the eNB allocates the D2D resource of mode 1 to UE1. After receiving the D2D resource configuration information, the UE1 sends a D2D buffer report request/D2D scheduling request eNB to allocate D2D resources for it. Whenever the eNB receives the D2D buffer report request/D2D scheduling request information from the UE1, the eNB allocates the D2D resource to the UE1, and then starts or restarts the D2D inactivity timer corresponding to the user equipment.
  • UE1 After receiving the D2D resource allocation information, UE1 performs D2D transmission on the allocated resources. For the eNB, if the D2D inactivity timer for UE1 that it maintains is timed out or has not been started, the eNB determines that the D2D state of the user equipment is in an inactive state, otherwise the eNB determines that the D2D state of the user equipment is in an active state;
  • Office A, B, C, and D use public safety UE1, UE2, UE3, and UE4 with D2D capabilities. Officers A, B, C, and D all subscribe to the public safety service, and UE1, UE2, and UE3 are all configured to belong to the D2D communication group X. After Office A, B, C, and D arrive at the rescue location, Office A wants to initiate a multicast call to inform other nearby Office related information corresponding to D2D communication group X.
  • the UE1 of Officer A sends an RRC connection request to the eNB, and the eNB sends an RRC Connection Setup message to UE1.
  • the UE1 may include a D2D indication and a short Inactivity timer indication information in the RRC connection setup complete message sent to the eNB, as shown in FIG.
  • the eNB sets and starts a short Inactivity timer.
  • the short Inactivity timer allows the D2D UE that only performs D2D communication to enter the idle state as soon as possible to achieve the purpose of power saving. Thereafter, the D2D resource of Type1/Type2B/Mode2 is configured and allocated for UE1.
  • UE1 After receiving the D2D resource configuration information, UE1 performs D2D transmission on the configured and or allocated D2D resources.
  • the eNB may determine the D2D and or the cellular activity status of the UE1 by using the manners in the examples 2 to 4.
  • the eNB may start to initiate the S1/RRC connection release for the UE1.
  • This embodiment provides an eNB initiating an S1 connection release procedure. The following is explained in detail by way of Example 6 to Example 7.
  • the base station sends a reason value of the UE to the MME as a user inactive UE context release request.
  • the base station may send, to the MME, a UE context release request with a cause value of D2D and an E-RAB inactivity.
  • the UE sends a UE context release command to the base station, and the base station may subsequently send an RRC connection release message to the UE, requesting the UE to release the RRC connection first, and then the base station sends a UE context release complete message to the MME, after which the UE's S1 connection and the RRC connection are performed. They have all been released.
  • the base station sends a UE context release request with a cause value of E-RAB inactivity to the MME.
  • the base station may send, to the MME, a UE context release request with a cause value of D2D and an E-RAB inactivity.
  • the MME After receiving the message, the MME sends a UE context release command to the base station, and the base station may subsequently send an RRC connection release message to the UE, requesting the UE to release the RRC connection first, and then the base station sends a UE context release complete message to the MME, after which the UE's S1 Both the connection and the RRC connection are released.
  • the RRC connection of the UE is released, the UE can continue to perform D2D transmission/reception using the D2D resources allocated before the eNB.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the base station when the base station detects that the D2D state and/or the cellular state is in an inactive state, the base station initiates release of the S1 connection or the RRC connection; or, when the UE detects that it is in an inactive state, The technical means of reporting the D2D state to the base station, and solving the related technology, there is no right
  • the technical problem of the D2D communication or the solution of the state of the discovered UE is processed, so that the base station can accurately determine the active state of the UE and perform processing, thereby ensuring the smooth progress of the D2D transmission.

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Abstract

本发明提供了一种用户状态的处理方法及装置，其中，上述处理方法包括：基站监测用户设备的D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的增强无线接入承载是否存在数据包的发送或接收；在监测到所述D2D状态和/或蜂窝状态处于非活动状态时，所述基站发起释放S1连接和/或无线资源控制RRC连接。采用本发明提供的上述技术方案，解决了相关技术中，尚无对进行D2D通信或发现的UE的状态进行处理的解决方案等技术问题，从而使得基站可以准确判断UE的活动状态并进行处理，保证了D2D传输的顺利进行。

Description

用户状态的处理方法及装置 技术领域
本发明涉及通信领域，尤其是涉及一种用户状态的处理方法及装置。
背景技术
随着无线多媒体业务的发展，人们对高数据速率和用户体验的需求日益增长，从而对传统蜂窝网络的系统容量和覆盖提出了较高要求。另一方面公共安全、社交网络、近距离数据共享、本地广告等应用场景使得人们对了解附近人或事物并与之通信(Proximity Services，邻近服务)的需求逐渐增加。传统的以基站为中心的蜂窝网络在高数据速率以及邻近服务的支持方面存在明显的局限性，在这种需求背景下，代表未来通信技术发展新方向的设备到设备(Device-to-Device，简称D2D)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并改善网络基础设施的鲁棒性，很好地满足上述高数据速率业务和邻近服务的要求。
D2D技术可以工作在授权频段或非授权频段，允许多个支持D2D功能的用户设备(即D2D用户设备，D2D User Equipment，简称D2D UE)在有网络基础设施或无网络基础设施的情况下进行直接发现/直接通信。D2D的应用场景主要有三种：
UE1和UE2在蜂窝网络的覆盖下进行数据交互，用户面数据不经过网络基础设施，如图1的模式1；
在弱/无覆盖区域的UE中继传输，如图1中的模式2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，能帮助运营商扩展覆盖、提高容量；
在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备间直接通信，如图1中的模式3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
D2D技术通常包括D2D发现技术和D2D通信技术，其中，D2D发现技术是指用于判断/确定第一用户设备是否邻近第二用户设备的技术。通常，D2D用户设备间可通过发送或接收发现信号/信息来发现对方；D2D通信技术是指D2D用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
根据现有第三代合作伙伴计划(3rd Generation Partnership Project，简称3GPP)标准会议的进展，无论是D2D发现还是D2D通信资源，都存在两种资源分配方式，即基于竞争的资源获取(第一资源分配方式)或是由基站为UE分配专有的资源(第二资源分配方式)进行D2D发现/通信。第一资源分配方式通常由基站或是系统预分配一个D2D资源池，参与D2D发现/通信的D2D UE监听该资源池，并通过竞争的方式获取D2D发送资源。而第二资源分配方式由基站根据UE的请求为UE分配合适的D2D资源。
相关技术并未对进行D2D发现/通信的D2D UE的状态处理给出系统完善的解决方案。
发明内容
针对相关技术中的上述技术问题，本发明提供了一种用户状态的处理方法及装置，以至少解决上述技术问题。
根据本发明的一个实施例，提供了一种用户状态的处理方法，包括：基站监测用户设备(User Equipment，简称为UE)的D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的增强无线接入承载(Enhanced Radio Access Bearer，简称为E-RAB)是否存在数据包的发送或接收；在监测到所述D2D状态和/或蜂窝状态处于非活动状态时，所述基站发起释放S1连接和/或无线资源控制RRC连接。
在本实施例中，基站监测UE的D2D状态包括以下之一：所述基站监测为所述UE配置的D2D资源是否已经超出有效期；所述基站根据接收的所述UE的D2D状态信息判断所述UE的D2D状态，其中，在所述D2D状态信息指示为活动状态时，确定所述D2D状态处于活动状态；否则，确定所述D2D状态处于非活动状态；所述基站监测所述UE的D2D不活动定时器是否超时。
在本实施例中，所述基站监测为所述UE配置的D2D资源是否已经超出有效期包括：在接收到来自所述UE的D2D资源配置请求信息并为UE配置D2D资源后，所述基站启动或重启为所述UE配置的D2D资源有效期定时器；如果所述D2D资源有效期定时器超时或者未启动，则确定所述UE的D2D状态处于非活动状态，否则，确定所述UE的D2D状态处于活动状态。
在本实施例中，所述基站监测所述UE的D2D不活动定时器是否超时，包括：所述基站在接收到或发送以下至少之一信息时，启动或重启所述UE的D2D不活动定时 器：D2D资源配置请求、D2D缓冲区上报请求、D2D状态信息、D2D资源配置信息、D2D资源授权grant信息；在监测到所述D2D不活动定时器超时或者未启动时，所述基站确定所述UE的D2D状态处于非活动状态，否则确定所述UE的D2D状态处于活动状态。
在本实施例中，启动或重启所述UE的D2D不活动定时器之前，还包括以下之一：所述基站根据默认配置设置所述D2D不活动定时器；所述RRC连接的建立目的为D2D发现或通信时，或者所述UE向所述基站发送D2D不活动定时器指示信息或节电指示信息给基站时，所述基站为所述UE设置持续时间小于系统默认配置的D2D不活动定时器。
在本实施例中，所述D2D不活动定时器与用于监测蜂窝活动状态的蜂窝不活动定时器复用同一定时器。
在本实施例中，所述基站监测UE的D2D状态包括：所述基站接收所述UE发送的D2D资源配置请求信息；所述基站为所述UE发送资源配置信息，该资源配置信息中携带有D2D资源有效期；或者，所述基站向所述UE发送D2D状态上报指示信息；或者，所述基站向所述UE发送D2D不活动定时器信息。
在本实施例中，所述D2D状态上报指示信息中还携带有D2D状态上报周期。
在本实施例中，所述基站发起释放S1连接和/或无线资源控制RRC连接，包括：如果所述D2D状态和所述蜂窝状态均处于非活动状态时，所述基站向移动性管理实体MME发送原因值为UE D2D非活动且蜂窝非活动的UE上下文释放请求；如果所述D2D状态处于活动状态且所述蜂窝状态处于非活动状态，基站向MME发送原因值为蜂窝非活动的UE上下文释放请求。
根据本发明的另一个实施例，提供了一种用户状态的处理方法，包括：用户设备UE监测所述UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的无线接入承载是否存在数据包的发送或接收；所述UE向基站发送所述D2D状态；或者，在监测到所述D2D状态和所述蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
在本实施例中，UE监测所述UE的D2D状态，包括：所述UE接收来自所述基站的以下信息：D2D资源配置和D2D资源有效期信息，或者，D2D状态上报指示和上报周期，或者D2D不活动定时器信息，或者D2D资源授权grant信息。
在本实施例中，所述UE向基站发送所述UE的D2D状态包括以下之一：在所述UE接收到所述D2D资源配置和D2D资源有效期信息时，所述UE在所述D2D资源有效期内使用所述D2D资源进行D2D发送和/或接收；在所述D2D资源有效期到期时，所述UE向所述基站发送D2D资源配置请求；在接收到所述D2D状态上报指示和上报周期时，所述UE周期性的向所述基站发送当前D2D状态；在接收到所述D2D不活动定时器信息且所述D2D不活动定时器超时，则所述UE向所述基站发送D2D状态为非活动状态的信息。
在本实施例中，UE监测所述UE的D2D状态，包括：所述UE接收到所述D2D不活动定时器信息时，根据该D2D不活动定时器信息设置本地的D2D不活动定时器，否则，根据默认配置设置所述D2D不活动定时器；在所述UE接收到以下之一信息时，所述UE启动所述D2D不活动定时器：D2D资源配置和D2D资源有效期信息，D2D状态上报指示和上报周期，D2D不活动定时器信息；或者，所述UE在接收到D2D资源grant信息或每次发送D2D数据包时，重启所述D2D不活动定时器；如果所述UE的D2D不活动定时器超时，确定所述D2D状态处于非活动状态，否则，所述D2D状态处于活动状态。
在本实施例中，UE监测所述UE的D2D状态，包括：所述UE针对D2D发现和D2D通信设置不同的D2D不活动定时器；所述UE针对D2D发送或接收设置不同的D2D不活动定时器；其中，如果所述UE的D2D不活动定时器超时，确定所述D2D状态处于非活动状态，否则，所述D2D状态处于活动状态。
在本实施例中，所述UE向基站发送所述UE的D2D状态，包括：所述UE根据所述上报周期向所述基站周期性上报所述D2D状态；或者，所述UE仅在所述D2D状态处于活动状态时上报所述D2D状态。
在本实施例中，所述UE上报的所述D2D状态还用于指示以下信息：D2D发送状态和/或D2D接收状态；或者，D2D发现状态和/或D2D通信状态。
在本实施例中，所述UE向基站发送所述UE的D2D状态包括：在所述D2D状态为非活动状态时，所述UE向所述基站发送释放原因为D2D活动处于非活动状态的无线资源控制RRC连接释放请求消息。
根据本发明的又一个实施例，提供了一种用户状态的处理装置，应用于基站，包括：监测模块，设置为监测用户设备UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的增强无线接入承载E-RAB是否存在数据包的发送或接收；释放模块， 设置为在监测到所述D2D状态和/或蜂窝状态处于非活动状态时，发起释放S1连接和/或无线资源控制RRC连接。
根据本发明的再一个实施例，提供了一种用户状态的处理装置，应用于UE，包括：监测模块，设置为监测所述UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的无线接入承载是否存在数据包的发送或接收；发送模块，设置为向基站发送所述D2D状态；释放模块，设置为在监测到所述D2D状态和所述蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
通过本发明实施例，采用基站监测到D2D状态和/或蜂窝状态处于非活动状态时，基站发起释放S1连接或RRC连接；或者，UE在监测到其处于非活动状态时，向基站上报D2D状态的技术手段，解决了相关技术中，尚无对进行D2D通信或发现的UE的状态进行处理的解决方案等技术问题，从而使得基站可以准确判断UE的活动状态并进行处理，保证了D2D传输的顺利进行。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为根据相关技术的设备到设备发现或通信架构示意图；
图2为根据本发明实施例的用户状态的处理方法的流程图；
图3为根据本发明实施例的用户状态的处理装置的结构框图；
图4为根据本发明实施例的另一用户状态的处理方法的流程图；
图5为根据本发明实施例的另一用户状态的处理装置的结构框图；
图6为根据本发明实例1的根据资源有效期判断D2D活动状态的信令流程图；
图7是本发明实例1根据资源有效期判断D2D活动状态的基站处理流程图；
图8是本发明实例2根据UE状态上报判断D2D活动状态的信令流程图；
图9是本发明实例2根据UE状态上报及非活动定时器判断D2D活动状态的基站处理流程图；
图10是本发明实例3基站为UE配置D2D非活动定时器监测D2D活动状态的流程图；
图11是本发明实例4基站根据BSR上报更新D2D非活动定时器的流程图；
图12是本发明实例5基站根据UE指示为UE设置短非活动定时器；
图13是本发明实例6D2D和蜂窝非活动状态下S1连接释放发起流程图；
图14是本发明实例7蜂窝非活动状态下S1连接释放发起流程图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在蜂窝系统中，基站会检测UE的活动状态，如果发现所有的演进的无线接入承载(Evolve Radio Access Bearer，简称E-RAB)在系统配置的时间都没有数据包收发，则基站会发起S1及无线资源控制(Radio Resource Control，简称RRC)连接的释放。其具体流程为基站向移动性管理实体(Mobile Management Entity，简称MME)发送UE上下文释放请求，MME收到该消息后，向基站发送UE上下文释放命令，基站可以随后向UE发送RRC连接释放消息，要求UE首先释放RRC连接，之后基站发送UE上下文释放完成消息给MME，在此之后UE的S1连接以及RRC连接都被释放了。假如UE没有蜂窝通信即E-RAB上没有数据包收发，但UE正在进行D2D发现/通信，如果eNB依然按照之前UE非活动(Inactivity)判断准则，则eNB有可能在UE进行D2D发现/通信的过程中发起RRC连接及S1连接释放。为了避免这种情况，基站需要在监测所有的E-RAB是否有数据包收发的同时，还需要检测UE的D2D活动状态。
目前D2D发现定义了两种资源分配方式：Type1及Type2，分别对应于背景技术中描述的第一资源分配方式及第二资源分配方式。类似的，D2D通信也定义了两种资源分配方式：Mode1及Mode2，分别对应于背景技术中描述的第二资源分配方式及第一资源分配方式。
对于Type1和Mode2资源配置，基站或是系统预分配UE一个D2D资源池，参与D2D发现/通信的D2D UE监听该资源池，并通过竞争的方式获取D2D发送资源。 对于Type2B资源，由基站为UE配置UE专用的半持续资源。在这两种情况下，UE获取D2D资源池或是半持续资源配置信息后，基站就很难感知D2D UE的活动状态。对于Mode1资源，需要UE每次在使用D2D资源之前，向基站发送D2D缓冲区状态上报，则基站可以根据接收到的D2D缓冲区状态以及为UE动态分配的D2D资源判断UE的D2D活动状态。
针对上述几种资源分配方式，相关技术并未对具体D2D UE的用户状态处理方法给出系统完善的解决方案。而本发明实施例提出了一种用户状态的处理方法及装置，以解决上述技术问题。
图2为根据本发明实施例的用户状态的处理方法的流程图。如图2所示，该方法包括：
步骤S202，基站监测UE的D2D状态和蜂窝状态，其中，该D2D状态用于指示UE是否存在D2D发送或D2D接收，该蜂窝状态用于指示UE的E-RAB是否存在数据包的发送或接收；
步骤S204，在监测到D2D状态和/或蜂窝状态处于非活动状态时，基站发起释放S1连接和/或RRC连接。
通过上述处理步骤，由于在监测到UE活动的状态处于非活动状态时，基站可以发起D1连接和/或RRC连接的释放，因此，可以及时对D2D用户设备的用户状态进行处理，保证D2D传输的顺利进行。
基站监测UE的D2D状态的实现方式有多种，例如可以通过以下之一方式实现：基站监测为UE配置的D2D资源是否已经超出有效期；基站根据接收的UE的D2D状态信息判断UE活动的状态，其中，在上述D2D状态信息指示为活动状态时，确定上述D2D状态处于活动状态；否则，确定上述D2D状态处于非活动状态；基站监测UE的D2D不活动定时器是否超时。
基站监测为UE配置的D2D资源是否已经超出有效期可以表现为以下实现形式，但不限于此：在接收到来自UE的D2D资源配置请求信息并为UE配置D2D资源后，基站启动或重启为UE配置的D2D资源有效期定时器；如果上述D2D资源有效期定时器超时或者未启动，则确定UE的D2D状态处于非活动状态，否则，确定UE的D2D状态处于活动状态。
基站监测UE的D2D不活动定时器是否超时，包括：基站在接收到或发送以下至少之一信息时，启动或重启UE的D2D不活动定时器：D2D资源配置请求、D2D缓冲区上报请求、D2D状态信息、D2D资源配置信息、D2D资源授权(grant)信息；在监测到上述D2D不活动定时器超时或者未启动时，基站确定UE的D2D状态处于非活动状态，否则确定UE的D2D状态处于活动状态。
在本发明的一个实施例中，在启动或重启UE的D2D不活动定时器之前，还可以执行以下之一处理过程：基站根据默认配置设置上述D2D不活动定时器；上述RRC连接的建立目的为D2D发现或通信时，或者UE向基站发送D2D不活动定时器指示信息或节电指示信息给基站时，基站为UE设置持续时间小于系统默认配置的D2D不活动定时器。
上述D2D不活动定时器与用于监测蜂窝活动状态的蜂窝不活动定时器可以复用同一定时器。
基站监测用户设备的D2D状态包括：基站接收UE发送的D2D资源配置请求信息；基站为UE发送资源配置信息，该资源配置信息中携带有D2D资源有效期；或者，基站向UE发送D2D状态上报指示信息；或者，基站向UE发送D2D不活动定时器信息。上述D2D状态上报指示信息中还携带有D2D状态上报周期。
步骤S204的实现方式有多种，在本实施例的一个优选实施方式中，可以通过以下方式实现：如果上述D2D状态和上述蜂窝状态均处于非活动状态时，基站向MME发送原因值为UE D2D非活动或且蜂窝非活动的UE上下文释放请求；如果上述D2D状态处于活动状态且上述蜂窝状态处于非活动状态，基站向MME发送原因值为蜂窝非活动的UE上下文释放请求。
在本发明实施例中，还提供一种用户状态的处理装置，应用于基站，如图3所示，该装置包括：监测模块30，设置为监测UE的D2D状态和蜂窝状态，其中，D2D状态用于指示所述UE是否存在D2D发送或D2D接收，蜂窝状态用于指示UE的E-RAB是否存在数据包的发送或接收；释放模块32，连接至监测模块30，设置为在监测到D2D状态和/或蜂窝状态处于非活动状态时，发起释放S1连接和/或RRC连接。
需要说明的是，上述各个模块是可以通过软件或硬件的形式来实现的，对于后者，可以采用以下方式实现，但不限于此：监测模块30和释放模块32分别位于第一处理器和第二处理器中；或者，监测模块30和释放模块32位于同一处理器中。
图4为根据本发明实施例的另一用户状态的处理方法的流程图。如图4所示，该方法包括：
步骤S402，UE监测UE的D2D状态和蜂窝状态，其中，D2D状态用于指示UE是否存在D2D发送或D2D接收，蜂窝状态用于指示UE的无线接入承载(RAB)是否存在数据包的发送或接收；
步骤S404，UE向基站发送上述D2D状态，或者，在监测到D2D状态和蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
步骤S402的实现方式有多种，例如，
1、UE接收来自基站的以下信息：D2D资源配置和D2D资源有效期信息，或者，D2D状态上报指示和上报周期，或者D2D不活动定时器信息，或者D2D资源grant信息。此时，UE向基站发送UE的D2D状态包括以下之一：在UE接收到上述D2D资源配置和D2D资源有效期信息时，UE在上述D2D资源有效期内使用上述D2D资源进行D2D发送和/或接收；在上述D2D资源有效期到期时，UE向基站发送D2D资源配置请求；在接收到上述D2D状态上报指示和上报周期时，UE周期性的向基站发送当前D2D状态；在接收到上述D2D不活动定时器信息且上述D2D不活动定时器超时，则UE向基站发送D2D状态为非活动状态的信息。
2、UE接收到上述D2D不活动定时器信息时，根据该D2D不活动定时器信息设置本地的D2D不活动定时器，否则，根据默认配置设置上述D2D不活动定时器；在UE接收到以下之一信息时，UE启动上述D2D不活动定时器：D2D资源配置和D2D资源有效期信息，或者，D2D状态上报指示和上报周期，或者D2D不活动定时器信息；或者，UE在接收到D2D资源grant信息或每次发送D2D数据包时，重启上述D2D不活动定时器；如果UE的D2D不活动定时器超时，确定上述D2D状态处于非活动状态，否则，上述D2D状态处于活动状态。
3、UE针对D2D发现和D2D通信设置不同的D2D不活动定时器；UE针对D2D发送或接收设置不同的D2D不活动定时器；其中，如果UE的D2D不活动定时器超时，确定上述D2D状态处于非活动状态，否则，上述D2D状态处于活动状态。
基于上述监测过程，UE向基站发送UE的D2D状态，可以通过以下方式实现：UE根据上述上报周期向基站周期性上报上述D2D状态；或者，UE仅在上述D2D状态处于活动状态时上报上述D2D状态。
在本发明实施例中，UE上报的上述D2D状态还用于指示以下信息：D2D发送状态和/或D2D接收状态；或者，D2D发现状态和/或D2D通信状态。
步骤S404可以表现为以下形式，但不限于此：在上述D2D状态为非活动状态时，UE向基站发送释放原因为D2D活动处于非活动状态的无线资源控制RRC连接释放请求消息。
在本实施例中，还提供一种用户状态的处理装置，该处理装置应用于UE，如图5所示，上述处理装置包括：监测模块50，设置为监测UE的D2D状态和蜂窝状态，其中，D2D状态用于指示所述UE是否存在D2D发送或D2D接收，蜂窝状态用于指示UE的RAB是否存在数据包的发送或接收；发送模块52，连接至监测模块50，设置为向基站发送D2D状态；释放模块54，与监测模块50连接，设置为在监测到D2D状态和蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
为了更好地理解上述实施例，以下结合优选实施例详细说明。
实施例一
本实施例给出UE的D2D状态监测过程。以下通过实例1至实例5详细阐述。
实例1
在商业应用场景，Mary和John持有具备D2D发现功能的UE1和UE2。UE1和UE2彼此在D2D发现范围内。UE1想要进行D2D发现信息的发送，因此发送包含D2D资源配置请求信息的消息给eNB，如图6所示。
eNB收到消息后，判断需要给UE1配置Type1的D2D发现资源。eNB发送包含D2D资源配置信息的消息给UE1，其中包含Type1发送资源池信息以及资源配置信息有效期。
UE1获取D2D资源配置之后，根据接收到的资源有效期信息设置并启动D2D资源有效定时器，之后根据接收到的Type1发送资源池信息基于竞争的方式从Type1资源池中获取资源进行D2D发送。
当D2D资源有效定时器超时后，UE1需要释放D2D资源配置信息。如果UE1还希望继续发送D2D发现信号，则UE1需要重新发送包含D2D资源配置请求信息的消息给eNB。
从eNB的角度来看，eNB发送包含D2D资源有效期的D2D资源配置信息的消息给UE1后，需要设置并启动/重启对应于D2D UE发现的有效期定时器，如图7所示。之后判断eNB维护的针对UE活动状态的非活动(Inactivity)定时器(该定时器同时针对UE的蜂窝通信以及D2D通信的活动状态)是否超时，如果已经超时，则基站进一步判断D2D资源有效期定时器是否超时，如果尚未超时，则重启针对UE活动状态的Inactivity定时器，如果D2D资源有效期定时器也已超时，则eNB监测到UE处于D2D非活动状态和蜂窝非活动状态，可以开始发起针对UE1的S1/RRC连接释放。
实例2
在商业应用场景，Mary和John持有具备D2D发现功能的UE1和UE2。UE1和UE2彼此在D2D发现范围内。UE1想要进行D2D发现信息的发送，因此发送包含D2D资源配置请求信息的消息给eNB，如图8所示。
eNB收到消息后，判断需要给UE1配置Type2B的D2D发现资源。eNB发送包含D2D资源配置信息的消息给UE1，其中包含Type2B资源信息以及D2D状态上报指示。需要注意的是，D2D状态上报指示还可包含D2D上报周期信息。
UE1获取D2D资源配置之后，根据接收到的D2D上报周期信息设置并启动D2D状态上报定时器，之后根据接收到的Type2B发送资源信息进行D2D发送。
在此期间UE1监测D2D状态，如UE1根据系统预配置的或从eNB接收到的D2D不活动定时器信息，设置D2D不活动定时器。当UE1获取D2D资源配置之后，UE1启动D2D不活动定时器。每当UE1发送D2D数据包时，重启D2D不活动定时器。
当D2D状态上报定时器超时后，UE1判断D2D不活动定时器的状态，如果UE1的D2D不活动定时器超时，则UE1确定用户设备处于非活动状态，如果D2D不活动定时器正在运行，则确定用户设备处于活动状态，之后UE1发送包含D2D状态信息的消息给eNB。
除了本例中描述的针对UE1的所有承载/逻辑信道的D2D不活动定时器及D2D状态上报，UE1还可针对D2D发现或D2D通信设置不同的D2D不活动定时器，以及针对D2D发送或接收设置不同的D2D不活动定时器。在这种情况下，当D2D状态上报定时器超时后，UE1上报的D2D状态信息指示可指示D2D发送和或接收处于活动/非活动，指示D2D发现和或D2D通信处于活动/非活动状态。此外还可以是上述情况任意组合对应的指示信息。
可选的，UE1可仅在处于D2D活动状态时进行上报，当UE1监测到用户设备处于D2D非活动状态时，可以不再发送D2D状态上报。
从eNB的角度来看，eNB发送包含D2D状态上报指示信息的消息给UE1后，需要设置并启动/重启对应于UE1的D2D Inactivity定时器，如图9所示。之后检查是否收到UE1的D2D状态上报。如果收到D2D状态上报，则根据D2D状态上报信息判断，如果D2D状态信息指示UE1D2D状态为活动状态，则eNB确定UE1的D2D状态处于活动状态，否则eNB确定UE1的D2D状态处于非活动状态。如果UE1仅在监测到用户设备处于D2D活动状态时才发送D2D状态上报，则eNB只要接收到UE1的D2D状态上报，就确定UE1的D2D状态为活动状态。
eNB确定UE1处于D2D活动状态后，重启对应于UE1的D2D Inactivity定时器。如果在UE1的D2D Inactivity定时器超时之后，尚未收到UE1的D2D上报，则eNB确定UE1处于D2D非活动状态，如果UE1的蜂窝Inactivity定时器也超时，则eNB可以开始发起针对UE1的S1/RRC连接释放。
实例3
在公共安全场景，职员(Officer)A，B，C，D使用具备D2D功能的公共安全UE1，UE2，UE3及UE4。Officer A，B，C，D都订阅了公共安全服务，并且UE1，UE2，UE3都配置属于D2D通信组X。在Officer A，B，C，D到达救援地点之后，Officer A希望发起组播通话，告知附近对应于D2D通信组X的其他Officer相关信息。Officer A的UE1发送D2D资源配置请求消息给eNB，eNB为其配置模式2资源，与此同时，eNB为UE1配置了D2D Inactivity定时器，如图10所示。
UE1获取D2D资源配置之后，根据接收到的D2D Inactivity定时器信息设置并启动D2D不活动定时器。每当UE1发送和或接收D2D数据包时，重启D2D不活动定时器。
当D2D不活动定时器超时后，UE1确定用户设备处于非活动状态，则UE1发送包含D2D非活动状态信息的消息给eNB。如果UE1此时蜂窝也处于非活动状态，则UE1可以主动发起释放RRC连接，释放原因为D2D非活动。
实例4
在公共安全场景，Officer A，B，C，D使用具备D2D功能的公共安全UE1，UE2，UE3及UE4。Officer A，B，C，D都订阅了公共安全服务，并且UE1，UE2，UE3都 配置属于D2D通信组X。在Officer A，B，C，D到达救援地点之后，Officer A希望发起组播通话，告知附近对应于D2D通信组X的其他Officer相关信息。
Officer A的UE1发送包含D2D资源配置请求信息的消息给eNB，如图11所示。eNB接收到该消息后，为UE1分配模式1的D2D资源。UE1接收到D2D资源配置信息后，发送D2D缓冲区上报请求/D2D调度请求eNB为其分配D2D资源。每当eNB接收来自UE1的D2D缓冲区上报请求/D2D调度请求信息时，eNB为UE1分配D2D资源，之后启动或重启对应于所述用户设备的D2D不活动定时器。
UE1接收到D2D资源分配信息后，在所分配资源上进行D2D发送。对于eNB，如果其维护的针对UE1的D2D不活动定时器超时或是尚未启动，则eNB确定用户设备的D2D状态处于非活动状态，否则eNB确定用户设备的D2D状态处于活动状态；
实例5
在公共安全场景，Officer A，B，C，D使用具备D2D功能的公共安全UE1，UE2，UE3及UE4。Officer A，B，C，D都订阅了公共安全服务，并且UE1，UE2，UE3都配置属于D2D通信组X。在Officer A，B，C，D到达救援地点之后，Officer A希望发起组播通话，告知附近对应于D2D通信组X的其他Officer相关信息。
Officer A的UE1发送RRC连接请求给eNB，eNB发送RRC连接建立消息给UE1。UE1在发送给eNB的RRC连接建立完成消息中可包含D2D指示以及短Inactivity定时器指示信息，如图12所示。eNB接收到该消息后，设置并启动短Inactivity定时器。短Inactivity定时器可以让仅仅执行D2D通信的D2D UE尽早进入闲置状态，以达到节电的目的。此后为UE1配置和或分配Type1/Type2B/Mode2的D2D资源。UE1接收到D2D资源配置信息后，在配置和或分配的D2D资源上进行D2D传输。eNB可使用实例2～4中的方式判断UE1的D2D和或蜂窝活动状态，当判断UE1处于蜂窝非活动状态时，eNB可以开始发起针对UE1的S1/RRC连接释放。
实施例二
本实施例给出eNB发起S1连接释放过程。以下通过实例6至实例7详细阐述。
实例6
如图13所示，如果eNB判断用户设备处于D2D非活动状态和蜂窝非活动状态，则基站向MME发送原因值为用户非活动的UE上下文释放请求。可选的，基站可以向MME发送原因值为D2D且E-RAB非活动的UE上下文释放请求。MME收到该消 息后，向基站发送UE上下文释放命令，基站可以随后向UE发送RRC连接释放消息，要求UE首先释放RRC连接，之后基站发送UE上下文释放完成消息给MME，在此之后UE的S1连接以及RRC连接都被释放了。
实例7
如图14所示，如果eNB判断用户设备处于D2D活动状态，而E-RAB处于非活动状态，则基站向MME发送原因值为E-RAB非活动的UE上下文释放请求。可选的，基站可以向MME发送原因值为D2D且E-RAB非活动的UE上下文释放请求。MME收到该消息后，向基站发送UE上下文释放命令，基站可以随后向UE发送RRC连接释放消息，要求UE首先释放RRC连接，之后基站发送UE上下文释放完成消息给MME，在此之后UE的S1连接以及RRC连接都被释放了。尽管UE的RRC连接被释放，当时UE可以继续使用eNB之前分配的D2D资源进行D2D发送/接收。
在另外一个实施例中，还提供了一种软件，该软件用于执行上述实施例及优选实施方式中描述的技术方案。
在另外一个实施例中，还提供了一种存储介质，该存储介质中存储有上述软件，该存储介质包括但不限于：光盘、软盘、硬盘、可擦写存储器等。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
基于本发明实施例提供的上述技术方案，采用基站监测到D2D状态和/或蜂窝状态处于非活动状态时，基站发起释放S1连接或RRC连接；或者，UE在监测到其处于非活动状态时，向基站上报D2D状态的技术手段，解决了相关技术中，尚无对进行 D2D通信或发现的UE的状态进行处理的解决方案等技术问题，从而使得基站可以准确判断UE的活动状态并进行处理，保证了D2D传输的顺利进行。

Claims (19)

  1. 一种用户状态的处理方法，包括：
    基站监测用户设备UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的增强无线接入承载E-RAB是否存在数据包的发送或接收；
    在监测到所述D2D状态和/或蜂窝状态处于非活动状态时，所述基站发起释放S1连接和/或无线资源控制RRC连接。
  2. 根据权利要求1所述的方法，其中，基站监测UE的D2D状态包括以下之一：
    所述基站监测为所述UE配置的D2D资源是否已经超出有效期；
    所述基站根据接收的所述UE的D2D状态信息判断所述UE的D2D状态，其中，在所述D2D状态信息指示为活动状态时，确定所述D2D状态处于活动状态；否则，确定所述D2D状态处于非活动状态；
    所述基站监测所述UE的D2D不活动定时器是否超时。
  3. 根据权利要求2所述的方法，其中，所述基站监测为所述UE配置的D2D资源是否已经超出有效期包括：
    在接收到来自所述UE的D2D资源配置请求信息并为UE配置D2D资源后，所述基站启动或重启为所述UE配置的D2D资源有效期定时器；如果所述D2D资源有效期定时器超时或者未启动，则确定所述UE的D2D状态处于非活动状态，否则，确定所述UE的D2D状态处于活动状态。
  4. 根据权利要求2所述的方法，其中，所述基站监测所述UE的D2D不活动定时器是否超时，包括：
    所述基站在接收到或发送以下至少之一信息时，启动或重启所述UE的D2D不活动定时器：D2D资源配置请求、D2D缓冲区上报请求、D2D状态信息、D2D资源配置信息、D2D资源授权grant信息；
    在监测到所述D2D不活动定时器超时或者未启动时，所述基站确定所述UE的D2D状态处于非活动状态，否则确定所述UE的D2D状态处于活动状态。
  5. 根据权利要求4所述的方法，其中，启动或重启所述UE的D2D不活动定时器之前，还包括以下之一：
    所述基站根据默认配置设置所述D2D不活动定时器；
    所述RRC连接的建立目的为D2D发现或通信时，或者所述UE向所述基站发送D2D不活动定时器指示信息或节电指示信息给基站时，所述基站为所述UE设置持续时间小于系统默认配置的D2D不活动定时器。
  6. 根据权利要求5所述的方法，其中，所述D2D不活动定时器与用于监测蜂窝活动状态的蜂窝不活动定时器复用同一定时器。
  7. 根据权利要求1所述的方法，其中，所述基站监测UE的D2D状态包括：
    所述基站接收所述UE发送的D2D资源配置请求信息；
    所述基站为所述UE发送资源配置信息，该资源配置信息中携带有D2D资源有效期；或者，所述基站向所述UE发送D2D状态上报指示信息；或者，所述基站向所述UE发送D2D不活动定时器信息。
  8. 根据权利要求7所述的方法，其中，所述D2D状态上报指示信息中还携带有D2D状态上报周期。
  9. 根据权利要求1至8中任一项所述的方法，其中，所述基站发起释放S1连接和/或无线资源控制RRC连接，包括：
    如果所述D2D状态和所述蜂窝状态均处于非活动状态时，所述基站向移动性管理实体MME发送原因值为UE D2D非活动且蜂窝非活动的UE上下文释放请求；
    如果所述D2D状态处于活动状态且所述蜂窝状态处于非活动状态，基站向MME发送原因值为蜂窝非活动的UE上下文释放请求。
  10. 一种用户状态的处理方法，包括：
    用户设备UE监测所述UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的无线接入承载是否存在数据包的发送或接收；
    所述UE向基站发送所述D2D状态；或者，在监测到所述D2D状态和所述蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
  11. 根据权利要求10所述的方法，其中，UE监测所述UE的D2D状态，包括：
    所述UE接收来自所述基站的以下信息：D2D资源配置和D2D资源有效期信息，或者，D2D状态上报指示和上报周期，或者D2D不活动定时器信息，或者D2D资源授权grant信息。
  12. 根据权利要求11所述的方法，其中，所述UE向基站发送所述UE的D2D状态包括以下之一：
    在所述UE接收到所述D2D资源配置和D2D资源有效期信息时，所述UE在所述D2D资源有效期内使用所述D2D资源进行D2D发送和/或接收；在所述D2D资源有效期到期时，所述UE向所述基站发送D2D资源配置请求；
    在接收到所述D2D状态上报指示和上报周期时，所述UE周期性的向所述基站发送当前D2D状态；
    在接收到所述D2D不活动定时器信息且所述D2D不活动定时器超时，则所述UE向所述基站发送D2D状态为非活动状态的信息。
  13. 根据权利要求11所述的方法，其中，UE监测所述UE的D2D状态，包括：
    所述UE接收到所述D2D不活动定时器信息时，根据该D2D不活动定时器信息设置本地的D2D不活动定时器，否则，根据默认配置设置所述D2D不活动定时器；
    在所述UE接收到以下之一信息时，所述UE启动所述D2D不活动定时器：D2D资源配置和D2D资源有效期信息，D2D状态上报指示和上报周期，D2D不活动定时器信息；或者，所述UE在接收到D2D资源grant信息或每次发送D2D数据包时，重启所述D2D不活动定时器；
    如果所述UE的D2D不活动定时器超时，确定所述D2D状态处于非活动状态，否则，所述D2D状态处于活动状态。
  14. 根据权利要求10所述的方法，其中，UE监测所述UE的D2D状态，包括：
    所述UE针对D2D发现和D2D通信设置不同的D2D不活动定时器；
    所述UE针对D2D发送或接收设置不同的D2D不活动定时器；
    其中，如果所述UE的D2D不活动定时器超时，确定所述D2D状态处于非活动状态，否则，所述D2D状态处于活动状态。
  15. 根据权利要求11所述的方法，其中，所述UE向基站发送所述UE的D2D状态，包括：
    所述UE根据所述上报周期向所述基站周期性上报所述D2D状态；
    或者，所述UE仅在所述D2D状态处于活动状态时上报所述D2D状态。
  16. 根据权利要求15所述的方法，其中，所述UE上报的所述D2D状态还用于指示以下信息：
    D2D发送状态和/或D2D接收状态；或者，D2D发现状态和/或D2D通信状态。
  17. 根据权利要求10所述的方法，其中，所述UE向基站发送所述UE的D2D状态包括：
    在所述D2D状态为非活动状态时，所述UE向所述基站发送释放原因为D2D活动处于非活动状态的无线资源控制RRC连接释放请求消息。
  18. 一种用户状态的处理装置，应用于基站，包括：
    监测模块，设置为监测用户设备UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的增强无线接入承载E-RAB是否存在数据包的发送或接收；
    释放模块，设置为在监测到所述D2D状态和/或蜂窝状态处于非活动状态时，发起释放S1连接和/或无线资源控制RRC连接。
  19. 一种用户状态的处理装置，应用于用户设备UE，包括：
    监测模块，设置为监测所述UE的设备到设备D2D状态和蜂窝状态，其中，所述D2D状态用于指示所述UE是否存在D2D发送或D2D接收，所述蜂窝状态用于指示所述UE的无线接入承载是否存在数据包的发送或接收；
    发送模块，设置为向基站发送所述D2D状态；
    释放模块，设置为在监测到所述D2D状态和所述蜂窝状态均处于非活动状态时，发起释放无线资源控制RRC连接。
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