WO2015168937A1 - 资源选择装置和通信*** - Google Patents

资源选择装置和通信*** Download PDF

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Publication number
WO2015168937A1
WO2015168937A1 PCT/CN2014/077148 CN2014077148W WO2015168937A1 WO 2015168937 A1 WO2015168937 A1 WO 2015168937A1 CN 2014077148 W CN2014077148 W CN 2014077148W WO 2015168937 A1 WO2015168937 A1 WO 2015168937A1
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WO
WIPO (PCT)
Prior art keywords
base station
user equipment
mode
resource
period
Prior art date
Application number
PCT/CN2014/077148
Other languages
English (en)
French (fr)
Inventor
吴联海
徐海博
常宁娟
鲁艳玲
Original Assignee
富士通株式会社
吴联海
徐海博
常宁娟
鲁艳玲
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社, 吴联海, 徐海博, 常宁娟, 鲁艳玲 filed Critical 富士通株式会社
Priority to EP14891382.5A priority Critical patent/EP3125611B1/en
Priority to JP2016566900A priority patent/JP2017515415A/ja
Priority to PCT/CN2014/077148 priority patent/WO2015168937A1/zh
Priority to KR1020167032277A priority patent/KR101881786B1/ko
Priority to CN201480077231.0A priority patent/CN106465209B/zh
Publication of WO2015168937A1 publication Critical patent/WO2015168937A1/zh
Priority to US15/345,438 priority patent/US10869237B2/en
Priority to US16/596,375 priority patent/US10869238B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/249—Reselection being triggered by specific parameters according to timing information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource selection apparatus and a communication system. Background technique
  • the device-to-device (D2D) communication mode means that the data packets do not need to pass through the core network, or even pass through the base station, and the two user equipments (UE1 and UE2) directly establish a communication link for communication.
  • FIG. 1 is a schematic diagram of establishing D2D communication between two user equipments belonging to the same base station;
  • FIG. 2 is a schematic diagram of establishing D2D communication by two user equipments belonging to different base stations.
  • the base station Before the user equipment performs D2D direct communication, the base station needs to allocate communication resources to the user equipment.
  • the mode in which the base station allocates D2D communication resources includes mode 1 (Mode 1) and mode 2 (Mode 2).
  • Mode 1 resource allocation mode base station scheduling allocation mode.
  • the user equipment Before the base station schedules the mode 1 resource, the user equipment needs to enter a radio resource control (RRC) state (RRC_Connected state), and send a resource request to the base station by using a buffer status report (BSR). After receiving the request, the base station allocates resources for the user equipment.
  • RRC radio resource control
  • BSR buffer status report
  • the base station In the mode 2 resource allocation mode, the base station notifies the time-frequency location of the user equipment resource pool through broadcast or dedicated signaling.
  • the mode 2 resource pool is preset to the user equipment. After obtaining the resource pool, the user equipment can autonomously select resources from the resource pool for D2D communication.
  • an embodiment of the present invention provides a resource selection apparatus and a communication system, by which a user equipment can be selected to select a corresponding resource for communication, so as to ensure continuity of D2D communication and avoid interruption.
  • a first aspect of the embodiments of the present invention provides a resource selection apparatus, including:
  • a first selecting unit configured to: after the user equipment is disconnected from the first base station, receive the physical layer out-of-synchronization indication information from the user equipment, and receive the second base station that is re-established with the user equipment And receiving, by the user equipment, configuration information that triggers the user equipment to switch to the second base station, to receive the first resource allocated by the second base station according to the first mode, a second period, or a third period of time from the user equipment re-establishment initialization to receiving the first resource allocated by the second base station in connection with the user equipment according to the first mode, or sending a reconstruction request from the user equipment to Receiving a device-to-device (D2D) from a resource pool configured by the first base station or the second base station according to the second mode, in a fourth period of receiving the first resource allocated by the second base station that is connected to the user equipment according to the first mode ) Resources for communication.
  • D2D device-to-device
  • a second aspect of the embodiments of the present invention provides a resource selection apparatus, including:
  • a first sending unit configured to send a handover request to the second base station according to the measurement result sent by the user equipment, where the handover request includes information that the user equipment is performing D2D communication, and/or used by the user equipment Allocation mode and resource location of D2D communication resources;
  • a first receiving unit configured to receive configuration information returned by the second base station according to the handover request, where the configuration information includes a time-frequency location of a resource pool configured by the second base station according to the second mode; and/or the Whether the second base station supports the information of the first mode resource allocation manner; and/or the second base station allocates the resource location of the resource according to the first mode;
  • the first configuration unit is configured to configure the configuration information to the user equipment.
  • a third aspect of the embodiments of the present invention provides a communication system, including a first base station, a second base station, and a user equipment, where
  • the user equipment After the user equipment is disconnected from the first base station, receiving the physical layer out-of-synchronization indication information from the user equipment to the first resource allocated by the second base station that is connected to the user equipment according to the first mode During a period, or receiving from the user equipment, triggering the configuration information of the user equipment to switch to the second base station to the second period of receiving the first resource allocated by the second base station according to the first mode, or from the user equipment Reconstructing to a third period of receiving a first resource allocated by the second base station in connection with the user equipment according to the first mode, or transmitting a reconstruction request from the user equipment to receiving a second connection reestablishing connection with the user equipment.
  • the fourth period of the first resource allocated by the base station according to the first mode the user equipment selects a resource for device-to-device (D2D) communication from the resource pool configured by the first base station or the second base station according to the second mode.
  • D2D device-to-device
  • An advantageous effect of the embodiment of the present invention is that the user equipment can use the resources selected in the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, so that the user equipment can be switched or failed in the scenario.
  • the corresponding resources can be selected for D2D communication to ensure the continuity of D2D communication and avoid interruption.
  • FIG. 1 is a schematic diagram of establishing D2D communication between two user equipments belonging to the same base station;
  • FIG. 2 is a schematic diagram of establishing D2D communication by two user equipments belonging to different base stations
  • Embodiment 3 is a flowchart of a resource selection method in Embodiment 1 of the present invention.
  • 4A and 4B are flowcharts of a resource selection method in Embodiment 2 of the present invention.
  • 5A and 5B are flowcharts of a resource selection method in Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram showing the structure of a resource selection device in Embodiment 4 of the present invention.
  • Figure 7 is a schematic diagram showing the structure of a user equipment in Embodiment 5 of the present invention.
  • Figure 8 is a block diagram showing the structure of a resource selection device in Embodiment 6 of the present invention.
  • Figure 9 is a block diagram showing the structure of a base station in Embodiment 7 of the present invention.
  • Figure 10 is a block diagram showing the structure of a base station in Embodiment 8 of the present invention
  • Figure 11 is a block diagram showing the configuration of a communication system in Embodiment 9 of the present invention. detailed description
  • Embodiment 1 of the present invention provides a resource selection method
  • FIG. 3 is a flowchart of the method. Referring to FIG. 3, the method includes:
  • Step 301 After the user equipment is disconnected from the first base station, receiving the physical layer out-of-synchronization indication information from the user equipment, and receiving the first resource allocated by the second base station that is connected to the user equipment according to the first mode.
  • a first period or receiving, from the user equipment, configuration information that triggers the user equipment to switch to the second base station to a second period of receiving the first resource allocated by the second base station according to the first mode, or from the user Reconfiguring the device to a third period of receiving the first resource allocated by the second base station in connection with the user equipment according to the first mode, or transmitting a reestablishment request from the user equipment to receiving the reestablishing connection with the user equipment.
  • the fourth period of the first resource allocated by the second base station according to the first mode the user equipment selects a resource for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode.
  • the first resource allocated by the base station according to the first mode may be a resource allocated by the allocation mode scheduled by the base station, and may be referred to as a mode 1 resource; the base station configures the resource pool according to the second mode, which may be referred to as mode 2
  • the resource pool, the user equipment selects resources for D2D communication from the resource pool, and the first mode and the second mode correspond to the Model and Mode2 described in the background art.
  • the second base mode is followed from the base station before receiving the first resource allocated by the other base station according to the first mode.
  • Select resources for D2D communication in the configured resource pool to ensure continuity of D2D communication and avoid interruption.
  • the first base station in a handover scenario, may be a source base station, and the second base station may be a target base station; or in a failure reconstruction scenario, the first base station is a base station where a user equipment fails to occur,
  • the second base station is a base station that is reconnected with the user equipment, and the second base station may be the first base station, or may be Other base stations.
  • the user equipment fails to disconnect from the first base station, and the user equipment triggers an initial reestablishment process, selects a suitable cell, and reestablishes a base station connected to the cell, such as the second base station.
  • the initial reconstruction process may be triggered when a radio link failure (RLF), a handover failure, a base station reconfiguration failure, or an underlying integrity check fails.
  • RLF radio link failure
  • the failure of triggering the initialization re-establishment process is a radio link failure (RLF)
  • RLF radio link failure
  • receiving the re-establishment connection with the user equipment is received.
  • the first time period (T1) of the first resource allocated by the second base station according to the first mode the user equipment selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using The first resource allocated by the base station according to the first mode.
  • the configuration information that triggers the user equipment to switch to the second base station is received from the user equipment, and the second base station is allocated according to the first mode.
  • a second period of the first resource ( ⁇ 2) the user equipment selects a resource for performing D2D communication from a resource pool configured by the first base station or the second base station according to the second mode, and does not use the first allocated by the base station according to the first mode. Resources.
  • the failure of triggering the initialization re-establishment process is a base station reconfiguration failure, an under-layer completion check failure, or a handover failure
  • the second base station is re-established from the user equipment to receive a re-establishment connection with the user equipment.
  • the user equipment selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the base station according to the The first resource allocated by a mode.
  • the failure of triggering the initialization re-establishment process is a handover failure
  • the first resource allocated according to the first mode by the second base station that is connected to the user equipment after receiving the re-establishment request from the user equipment is received.
  • the user equipment selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the first resource allocated by the base station according to the first mode.
  • the user equipment After receiving the configuration information that triggers the user equipment to switch to the second base station, the user equipment disconnects the connection with the first base station, and establishes a connection with the second base station by using a random access procedure.
  • the user equipment receives, from the user equipment, configuration information that triggers the user equipment to switch to the second base station to receive the first The second period of the first resource allocated by the second base station according to the first mode (T2), the user equipment selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the base station The first resource allocated according to the first mode.
  • the user equipment may select, in the first period, the second period, the third period, or the fourth period, the resource pool configured according to the second mode from the first base station or the second base station.
  • the resources are communicated, so that the user equipment can select corresponding resources for D2D communication in a scenario such as handover or failure reconstruction to ensure continuity of D2D communication.
  • the user equipment may select resources in the resource pool configured by the first base station, or may select resources configured by the second base station. Resources in the pool; in addition, you can select resources as follows:
  • the user equipment After the user equipment receives the resource pool configured by the second base station according to the second mode, selecting a resource for performing D2D communication from the resource pool configured by the second base station; and receiving, by the user equipment, the second base station according to the second Before the resource pool configured in the mode, the resource for D2D communication is selected from the resource pool configured by the first base station according to the second mode.
  • the mode 2 resource pool configured by the source base station or the target base station may be used; or after the user equipment receives the resource pool configured by the target base station, from the resource pool configured by the target base station. Selecting a resource for D2D communication; before the user equipment receives the resource pool configured by the target base station, selecting a resource for performing D2D communication from a resource pool configured by the source base station.
  • the base station where the user equipment fails or the mode 2 resource pool configured by the reestablished connected base station may be used; or the mode 2 resource pool configured by the user equipment to receive the reestablished connection base station.
  • selecting, by the resource pool configured by the base station of the reestablished connection, a resource for communication; before the user equipment receives the resource pool configured by the base station of the reestablished connection, a resource pool configured by the base station where the user equipment fails to occur Select the resource for D2D communication.
  • the method may further include:
  • Step 302 After the user equipment receives the first resource allocated by the second base station according to the first mode, or after receiving the indication information that the second base station indicates that the user equipment uses the first resource, releasing the resource pool; After the user equipment is connected to the second base station, after receiving the indication information, the user equipment stops using the mode 2 resource, releases the mode 2 resource pool, and requests the first resource from the second base station, and After the user equipment obtains the first resource allocated by the base station, the first resource is used.
  • the resource pool may include a resource pool configured by the first base station and/or the second base station according to the second mode.
  • the MAC layer when the user equipment performs the inter-cell handover, after the user equipment receives the mode 1 resource allocated by the target base station, the MAC layer will be configured with the mode 1 resource and release the mode 2 resource; or the user equipment receives the indication of the target base station.
  • the information indicates that when the user equipment uses the mode 1 resource, the user equipment stops using the mode 2 resource, and releases the mode 2 resource pool, and may also apply for the mode 1 resource to the target cell.
  • the MAC layer when the user equipment performs the failure re-establishment, after the user equipment receives the mode 1 resource allocated by the base station of the reestablished connection, the MAC layer will be configured with the mode 1 resource, and at the same time release the mode 2 resource; or receive at the user equipment.
  • the indication information to the reestablished connected base station indicates that the user equipment uses the mode 1 resource, stops using the mode 2 resource, and releases the mode 2 resource pool, and may also apply for the mode 1 resource to the reestablished connected base station.
  • the method may further include: Receiving the reconfiguration information, when the second base station is not successfully switched in the first predetermined time, the second period includes: a period from when the first predetermined time is exceeded until the first resource is received; The first predetermined time is less than the time from the receipt of the configuration information by the user equipment to the successful connection to the second base station.
  • the method may further include: When the re-establishment initialization starts, when the suitable cell is not selected in the second predetermined time, the third period includes: a period from when the second predetermined time is exceeded until the first resource is received; wherein the second predetermined time is less than The time from the start of the reconstruction initialization to the selection of the appropriate cell.
  • the method may further include: receiving configuration information configured by the first base station;
  • the configuration information includes: a time-frequency location of a resource pool configured by the second base station according to the second mode; and/or information about whether the second base station supports the first mode resource allocation mode; and/or the second base station according to the first The resource location where the pattern allocates resources.
  • the first base station may send a handover request to the second base station according to the measurement result sent by the user equipment, where the handover request includes information that the user equipment is performing D2D communication, and And an allocation mode and a resource location of the D2D communication resource used by the user equipment; the first base station, after receiving the configuration information returned by the second base station according to the handover request, configuring the configuration information to the user setting Ready, that is, the reconfiguration process.
  • the user equipment can perform D2D communication by using the resource selected from the resource pool configured by the first base station or the second base station according to the second mode in a predetermined period, so that the user equipment can be switched or In the scenario of failure reconstruction, etc., the corresponding resources can be selected for D2D communication.
  • Example 2 The resource selection method will be described in detail below by taking the handover scenario and the failure reconstruction scenario as examples.
  • Example 2
  • Embodiment 2 of the present invention provides a resource selection method, where an implementation scenario is performed for a user equipment to perform handover between cells, the method includes: after the user equipment disconnects from the source base station, receiving the triggering the user from the user equipment The device is connected to the configuration information of the target base station to the second period of receiving the first resource allocated by the target base station according to the first mode, and the user equipment selects D2D communication from the resource pool configured by the source base station or the target base station according to the second mode. resource of.
  • the implementation manner of the first resource allocated by the first mode and the resource pool configured by the second mode is the same as that of Embodiment 1, and is not repeated here.
  • FIG. 4A is a flowchart of a resource selection method according to Embodiment 2.
  • the method includes:
  • Step 401 The source base station notifies the user equipment (UE) of the time-frequency location of the mode 2 resource pool configured by the source base station, and notifies the user equipment that the mode 1 resource is available;
  • UE user equipment
  • the source base station may notify the user equipment mode 2 resource pool time-frequency location by broadcast or dedicated signaling; and/or the source base station may notify the user equipment by broadcast or dedicated signaling, which may apply for the usage mode. 1 resource.
  • Step 402 The user equipment reports the measurement result.
  • the user equipment measures channel quality, such as Reference Signal Receiving Power (RSRP) and Reference Signal Receiving Quality (RSRQ), and the user equipment reports the foregoing measurement result to the source.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • Step 403 The source base station sends a handover request to the target base station according to the measurement result.
  • the handover request may include information that the user equipment is performing D2D communication, and/or an allocation mode and resource location of the D2D communication resource used by the user equipment.
  • Step 404 After receiving the handover request, the target base station sends configuration information to the source base station.
  • the configuration information may include: a time-frequency location of a resource pool configured by the target base station according to mode 2; and/or information about whether the target base station supports mode 1 resource allocation mode; and/or the target base station according to mode 1 The resource location where the resource is allocated.
  • Step 405 After receiving the configuration information of the target base station, the source base station reconfigures the user equipment.
  • the source base station configures the configuration information to the user equipment, where the configuration manner can be used. In any way, the configuration information is notified to the user equipment or the like by using high layer signaling or other signaling.
  • Step 406 Establish a connection with the target base station, where the user equipment receives the configuration information, and the second period of receiving the resource allocated by the target base station according to mode 1, the user equipment follows the mode from the source base station or the target base station. 2 Select a resource for D2D communication in the configured resource pool;
  • the T304 timer is started to start timing, disconnecting and source.
  • the base station is connected, and through random access, establishes a connection with the target base station, and the T304 timer stops timing.
  • Step 407 The user equipment sends a resource request to the target base station.
  • Step 408 The target base station allocates a first resource to the user equipment.
  • Step 409 The target base station notifies the user equipment of the allocated resource, and the user equipment successfully receives the first resource allocated by the target cell.
  • the user equipment selects the resource for D2D communication from the mode 2 resource pool.
  • the mode 1 resource is not used; for the specific setting method of the T304, reference may be made to the existing standard, and details are not described herein again.
  • the user equipment may also set a first timer.
  • step 406 when the user equipment receives the RRC connection reconfiguration message containing the Mobility Control Info IE, when the T304 timer is started, The first timer ( ⁇ ) can be started. After the first timer expires, before the mode 1 resource allocated by the target cell is successfully received (time period ⁇ 2'), the user equipment selects a resource from the mode 2 resource pool. Used for D2D communication without using mode 1 resources; where ⁇ is less than ⁇ 304. It can be seen that when the time required for the user equipment to switch to the target device is short, the user equipment may not consider the resources used in the T′.
  • the user equipment may use the source 2 base station or the mode 2 resource pool configured by the target base station; or the resource configured from the target base station after the user equipment receives the mode 2 resource pool configured by the target base station.
  • the resource selected for D2D communication is selected in the pool; before the user equipment receives the mode 2 resource pool configured by the target base station, the resource for performing D2D communication is selected from the mode 2 resource pool configured by the source base station.
  • the method further includes:
  • Step 410 After successfully receiving the mode 1 resource allocated by the target base station, the user equipment stops selecting resources for performing D2D communication from the mode 2 resource pool.
  • Step 411 After the user equipment receives the mode 1 resource allocated by the target base station, the user equipment releases the mode 2 resource pool.
  • the MAC layer After the user equipment receives the mode 1 resource allocated by the target base station, the MAC layer will be configured with the mode 1 resource, and the mode 2 resource pool is released.
  • the user equipment receives the indication information sent by the target base station indicating that the user equipment uses the mode 1 resource ( See step 406'), the user equipment stops using the mode 2 resource, releases the mode 2 resource pool (see step 410' and step 411'), and requests the mode 1 resource to the target cell (see step 407).
  • step 410 and step 411 steps 410' and 411' may be interchanged or performed simultaneously.
  • the user equipment may select a resource from the mode 2 resource pool after receiving the reconfiguration information sent by the source base station after receiving the mode 1 resource allocated by the target cell. D2D communication to ensure the continuity of D2D communication.
  • the third embodiment of the present invention provides a resource selection method.
  • the failure of triggering the initialization re-establishment process mainly includes: radio link failure (RLF), The handover fails, the base station reconfiguration fails, the underlying integrity check fails, and the like;
  • the implementation manner of the first resource allocated by the first mode and the resource pool configured by the second mode is the same as that of Embodiment 1, and is not repeated here.
  • the second base station may be the first base station, or may be another base station.
  • FIG. 5A is a flowchart of a resource selection method according to Embodiment 3.
  • the method includes: Step 501: The first base station notifies the user equipment (UE) of the time-frequency location of the mode 2 resource pool configured by the first base station; and notifies the user equipment that the mode 1 resource is available;
  • Step 501 The first base station notifies the user equipment (UE) of the time-frequency location of the mode 2 resource pool configured by the first base station; and notifies the user equipment that the mode 1 resource is available;
  • UE user equipment
  • the first base station may notify the time-frequency location of the user equipment mode 2 resource pool by broadcast or dedicated signaling; and/or the first base station may notify by broadcast or dedicated signaling.
  • the user equipment which can apply for the use of mode 1 resources.
  • Step 503 505 After the user equipment fails, triggering an initialization re-establishment process, and selecting an appropriate cell, sending an RRC connection reestablishment request;
  • the start timer T311 starts counting and selects a suitable cell, such as the cell of the second base station, and the timer T311 is stopped.
  • Step 506 The user equipment receives a message that the RRC connection reestablishment succeeded or failed returned by the second base station.
  • the timer T301 may be started to start timing, and the RRC connection reestablishment success/failure message fed back by the second base station is received. Timer T301 stops;
  • the user equipment Upon receiving the message that the connection is successfully reestablished, the user equipment establishes a connection with the second base station, and if the message that the connection reestablishment fails is received, the user equipment fails to reestablish, but the user equipment may further perform step 505 to send a connection establishment request. Establishing a connection with the second base station.
  • Step 507 The user equipment successfully establishes an RRC connection with the second base station.
  • the process of establishing an RRC connection is similar to the prior art.
  • the cell selection is first performed; the user equipment sends an RRC connection request to the selected second base station; the second base station receives the After the RRC connection request, the RRC connection setup message is returned to the user equipment; after receiving the RRC connection setup message, the user equipment sends an RRC connection setup complete message to the second base station, so that the user equipment and the second base station are successfully established. the connection between.
  • the cell selected in the re-establishment initialization process of step 503 may be the same as or different from the cell selected in step 507, that is, the second base station may be the same or different.
  • Step 508 to step 512 are similar to step 407 411 of FIG. 4A of Embodiment 2, and details are not described herein again.
  • the method further includes:
  • Step 502 Receive physical layer out-of-synchronization indication information.
  • the timer T310 can be started to start timing.
  • the timer T310 is stopped until the physical layer synchronization indication information, or the handover procedure is triggered, or the reconstruction initialization process is started.
  • the user equipment selects from the mode 2 resource pool for the radio link failure, starting from T310, and the user equipment successfully receives the time zone (time period T1) of the successfully allocated mode 1 resource. D2D communication resources, without using mode 1 resources;
  • the timer ⁇ 304 is started, the user equipment switches to the second base station, and the handover fails.
  • the user equipment establishes a connection with the second base station by reestablishing the initialization process and reestablishing the connection process (step 503 507 of FIG. 5).
  • the user equipment selects D2D communication from the mode 2 resource pool. Resources without using mode 1 resources;
  • step 503 starting from the triggering re-establishment, starting the timer T311 to start timing, until the user equipment successfully receives the time period (time period ⁇ 3) of reconstructing the mode 1 resource allocated by the connected cell, the user equipment selects from the mode 2 resource pool.
  • step 505 from the time when the RRC connection reestablishment request is sent, to the time period (time period )4) that the user equipment successfully re-establishes the mode 1 resource allocated by the connected cell, the user equipment selects D2D communication from the mode 2 resource pool. Resources, without using mode 1 resources.
  • the user equipment When the base station reconfiguration fails, the underlying integrity check fails, and the like, the user equipment initiates a reestablishment initialization process, starting from the timer T311, until the user equipment successfully receives the mode 1 resource allocated for reestablishing the connected cell allocation. (Time period ⁇ 3), the user equipment selects resources for D2D communication from the mode 2 resource pool without using the mode 1 resource.
  • the user equipment may also set a second timer ( ⁇ 2"), start the re-establishment initialization, start the second timer, and the second timer expires, and the user equipment successfully receives the re-established connection cell allocation.
  • the time period of the mode 1 resource (time period ⁇ 3'), the user equipment selects resources from the mode 2 resource pool for D2D communication without using the mode 1 resource; wherein, ⁇ 2" is smaller than ⁇ 311.
  • timers ⁇ 310, ⁇ 304, T311, and T301 can refer to the existing standards, and details are not described herein again.
  • the user equipment receives an indication sent by the target base station indicating that the user equipment uses the mode 1 resource. information (See step 507'), the user equipment stops using the mode 2 resource, releases the mode 2 resource pool (see step 51 ⁇ and step 512'), and requests the mode 1 resource to the target cell (see step 508).
  • the order of step 511 and step 512, steps 511 'and 512' may be interchanged or performed simultaneously.
  • the method may further include: determining whether the received configuration information includes the mode 1 resource, where the configuration information is included in the configuration information. In the case where the mode 1 resource is not included, the user equipment performs steps 407 and 508, that is, sends a mode 1 resource request to the target base station.
  • the user equipment may use a mode 2 resource pool configured by a base station (first base station) where the failure occurs or a base station (second base station) that reestablishes connection; or a base station configuration that receives the reconstructed connection at the user equipment.
  • a mode 2 resource pool configured by a base station (first base station) where the failure occurs or a base station (second base station) that reestablishes connection; or a base station configuration that receives the reconstructed connection at the user equipment.
  • the mode 2 resource pool select the resource for performing D2D communication from the resource pool configured by the base station of the reestablished connection; before the user equipment receives the mode 2 resource pool configured by the base station of the reestablished connection, the base station from which the failure occurs Select the resource for D2D communication in the configured mode 2 resource pool.
  • the user equipment can use the resource selected from the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, so that the user equipment is in the failure reconstruction scenario.
  • the corresponding resources can be selected for D2D communication to ensure the continuity of D2D communication.
  • Embodiment 4 of the present invention further provides a resource selection device.
  • the principle of solving the problem by the resource selection device is similar to the methods of Embodiments 1 to 3. Therefore, the specific implementation may be implemented by referring to the implementation. The implementation of the methods of Examples 1 to 3, the same contents will not be repeated.
  • Figure 6 is a block diagram showing the structure of a resource selection device in Embodiment 4 of the present invention. As shown in Figure 6, the device 600 includes:
  • a first selecting unit 601 configured to: after the user equipment is disconnected from the first base station, receive the physical layer out-of-synchronization indication information from the user equipment, and receive the second base station that is re-established with the user equipment according to the first mode. a first period of the allocated first resource, or a second period of receiving, from the user equipment, triggering the user equipment to switch to the second base station to receive the first resource allocated by the second base station according to the first mode Or in a third period from the user equipment re-initialization to receiving the first resource allocated by the second base station connected to the user equipment according to the first mode, or after transmitting the re-establishment request from the user equipment to Relating, by the user equipment, the connected second base station according to the first mode, the fourth period of the first resource, from the first base station or the first
  • the second base station selects resources for communication according to the resource pool configured in the second mode.
  • the first base station and the second base station, and the first mode and the second mode for allocating resources are as described in Embodiments 1 to 3, and details are not described herein again.
  • the failure of the user equipment to trigger the initialization re-establishment process is a radio link failure (Ralf Link Failure, RLF)
  • RLF Radio Link Failure
  • the first selection unit 601 selects a resource for D2D communication from the resource pool of the second mode configured by the first base station or the second base station according to the first period of the first resource allocated by the second base station in the first mode, instead of The first resource allocated by the base station according to the first mode is used.
  • the first selection unit 601 selects a resource for D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the base station The first resource allocated according to the first mode.
  • the failure of the user equipment to trigger the initialization re-establishment process is the base station reconfiguration failure, the underlying completion verification failure, the handover failure, and the like
  • the reestablishment of the connection from the user equipment to the reconnection of the user equipment is received.
  • the third selection period of the first resource allocated by the second base station according to the first mode the first selection unit 601 selects a resource for D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the base station The first resource allocated according to the first mode.
  • the failure of the user equipment to trigger the initialization re-establishment process is a handover failure
  • the first resource allocated according to the first mode by the second base station that is connected to the user equipment after receiving the re-establishment request from the user equipment is received.
  • the first selection unit 601 selects a resource for D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the first resource allocated by the base station according to the first mode.
  • the user equipment may select, in the first period, the second period, the third period, or the fourth period, the resource pool configured according to the second mode from the first base station or the second base station.
  • the resources are communicated, so that the user equipment can select corresponding resources for D2D communication in a scenario such as handover or failure reconstruction to ensure continuity of D2D communication.
  • the first selecting unit 601 selects a resource for performing D2D communication from the resource pool configured by the second base station; Before the user equipment receives the resource pool configured by the second base station according to the second mode, the first selecting unit 601 is configured by the first A base station selects resources for D2D communication in a resource pool configured according to the second mode.
  • the first selection unit 601 may select the resource in the mode 2 resource pool configured by the source base station or the target base station; or receive the mode configured by the target base station in the user equipment. After the resource pool, the first selection unit 601 selects a resource for D2D communication from the resource pool configured by the target base station; before the user equipment receives the mode 2 resource pool configured by the target base station, the first selection unit 601 The resource of the D2D communication is selected in the mode 2 resource pool configured by the source base station.
  • the first selection unit 601 may use the base station in the failure or the resource in the mode 2 resource pool configured by the successfully reconstructed base station; or the user equipment receives the reconstruction successfully. After the mode 2 resource pool configured by the base station, the first selecting unit 601 selects a resource for performing D2D communication from the resource pool configured by the base station that is successfully reconstructed; and receives the mode 2 resource pool configured by the base station of the reconstructed base station at the user equipment. Previously, the first selection unit 601 selects a resource for D2D communication from the mode 2 resource pool configured by the base station in which the failure occurred.
  • the apparatus 600 further includes:
  • a first release unit 602 configured to: after the user equipment receives the first resource allocated by the second base station according to the first mode, or when receiving the indication information that the second base station indicates that the user equipment uses the first resource , release the resource pool.
  • the MAC layer is configured with the mode 1 resource, and the first release unit 602 releases the mode 2 resource; or
  • the mode 2 resource is stopped, and the first release unit 602 releases the mode 2 resource, and simultaneously requests the mode 1 resource to the target cell.
  • the MAC layer is configured with the mode 1 resource, and the first release unit 602 releases the resource of the mode 2;
  • the first release unit 602 releases the mode 2 resource, and the mode 1 resource is applied to the successfully reconstructed base station.
  • the resource pool may be configured in the second mode.
  • a first setting unit 603, configured to set a first predetermined time, where the first predetermined time is less than that set from the user Receiving the reconfiguration information to the time of successful connection to the second base station;
  • the second period includes: starting from exceeding the first predetermined time until receiving the first resource Period.
  • the resource pool configured in the second mode may not be used in the short re-establishment process, and the device 600 further includes:
  • a second setting unit 604 configured to set a second predetermined time, the second predetermined time being less than a time from the start of the reconstruction initialization to the selection of the appropriate cell;
  • the third period includes: a period from when the second predetermined time is exceeded until the first resource is received.
  • the apparatus may further include:
  • a receiving unit 605 configured to receive configuration information of reconfiguration of the first base station
  • the configuration information includes: a time-frequency location of a resource pool configured by the second base station according to the second mode; and/or information about whether the second base station supports the first mode resource allocation mode; and/or the second base station according to the first The resource location where the pattern allocates resources.
  • the first release unit 602, the first setting unit 603, the second setting unit 604, and the receiving unit 605 are optional units.
  • the first period, the second period, the third period, and the fourth period are as described in Embodiments 1 to 3, and the contents thereof are incorporated herein, and details are not described herein again.
  • the user equipment can use the resource selected from the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, so that the user equipment can be switched or failed.
  • the corresponding resources can be selected for D2D communication to ensure the continuity of D2D communication.
  • An embodiment of the present invention provides a user equipment, where the user equipment includes the resource selection apparatus as described in Embodiment 4.
  • FIG. 7 is a schematic block diagram of a system configuration of a user equipment 700 according to an embodiment of the present invention.
  • user device 700 can include central processor 701 and memory 740; memory 740 is coupled to central processor 701.
  • memory 740 is coupled to central processor 701.
  • FIG. 7 is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the resource selection device can be integrated into the central processor 701.
  • the central processing unit 701 can be configured to:
  • the central processing unit 701 can be configured to: after disconnecting from the first base station, receive the physical layer out-of-synchronization indication information from the user equipment, and receive the second base station that is re-established with the user equipment according to the first mode. a first period of the allocated first resource, or a second period of receiving, from the user equipment, triggering the user equipment to switch to the second base station to receive the first resource allocated by the second base station according to the first mode Or in a third period from the user equipment re-initialization to receiving the first resource allocated by the second base station connected to the user equipment according to the first mode, or after transmitting the re-establishment request from the user equipment to The second base station that the user equipment reestablishes the connection selects, according to the fourth period of the first resource allocated by the first mode, the resource for communication from the resource pool configured by the first base station or the second base station according to the second mode;
  • the base station allocates the first resource according to the first mode, and the resource pool configured according to the second mode is as shown in the embodiment.
  • the central processing unit 701 may be configured to: after the user equipment receives the resource pool configured by the second base station according to the second mode, select a resource for communication from the resource pool configured by the second base station. And before the user equipment receives the resource pool configured by the second base station according to the second mode, selecting a resource for communication from the resource pool configured by the first base station according to the second mode.
  • the central processing unit 701 may be configured to: after the user equipment receives the first resource allocated by the second base station according to the first mode, or after receiving the second base station, instructing the user equipment to use the first When a resource is instructed, the resource pool is released.
  • the central processing unit 701 may be configured to: start from the user equipment receiving the configuration information, and when the first base station fails to successfully switch to the second base station, the second period includes: The first predetermined time begins until a period in which the first resource is received;
  • the first predetermined time is less than the time from the receipt of the configuration information by the user equipment to the successful connection to the second base station.
  • the central processing unit 701 may be configured to: start from the user equipment re-establishment initialization, and when the suitable cell is not selected in the second predetermined time, the third period includes: from exceeding the second predetermined time The period until the receipt of the first resource; The second predetermined time is less than the time from the start of the reconstruction initialization to the selection of the appropriate cell.
  • the resource selection device may be configured separately from the central processing unit 701.
  • the resource selection device may be configured as a chip (such as the resource selection unit 750) connected to the central processing unit 701, by the control of the central processing unit. Implement the function of the resource selection device.
  • the user equipment 700 may further include: a communication module 710, an input unit 720, an audio processing unit 730, a display 760, and a power supply 770. It should be noted that the user equipment 700 does not necessarily include all of the components shown in FIG. 7. In addition, the user equipment 700 may also include components not shown in FIG. 7, and reference may be made to the prior art.
  • central processor 701 may include a microprocessor or other processor device and/or logic device that receives input and controls various aspects of user device 700. The operation of the part.
  • the memory 740 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • the above-mentioned information related to the failure can be stored, and a program for executing the related information can be stored.
  • the central processing unit 701 can execute the program stored in the memory 740 to implement configuration information, reconfiguration information storage, and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of user device 700 may be implemented by special purpose hardware, firmware, software or a combination thereof without departing from the scope of the invention.
  • the user equipment can use the resources selected from the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, which facilitates the user equipment to perform handover or failure reconstruction.
  • the corresponding resources can be selected for D2D communication to ensure the continuity of D2D communication.
  • FIG. 8 is a schematic diagram of the resource selection device in the embodiment. As shown in FIG. 8, the resource selection device 800 includes:
  • a first sending unit 801 configured to send, according to the measurement result sent by the user equipment, a handover request to the second base station, where the handover request includes information that the user equipment is performing D2D communication, and/or a D2D communication resource used by the user equipment Distribution mode and resource location;
  • a first receiving unit 802 configured to receive configuration information returned by the second base station according to the handover request, where the configuration information includes a time-frequency location of a resource pool configured by the second base station according to the second mode; and/or the second base station Yes Whether the information of the first mode resource allocation mode is supported; and/or the second base station allocates the resource location of the resource according to the first mode;
  • the first configuration unit 803 is configured to reconfigure the configuration information to the user equipment.
  • the resource selection device of the embodiment reconfigures the configuration information to the user equipment, and the user equipment can use the resource selected from the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, which is convenient for the user.
  • the device can select corresponding resources for D2D communication in scenarios such as handover or failure reconstruction to ensure continuity of D2D communication.
  • Embodiment 7 of the present invention provides a base station, which includes the resource selection apparatus as in Embodiment 6.
  • FIG. 9 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • the base station 900 can include: a central processing unit (CPU) 901 and a memory 910; the memory 910 is coupled to the central processing unit 901.
  • the memory 910 can store various data; and further store a program for resource selection, and execute the program under the control of the central processing unit 901 to receive measurement results and the like sent by the user equipment, and send configuration information to the user equipment, etc. .
  • the functionality of the resource selection device can be integrated into the central processor 901.
  • the central processing unit 901 may be configured to: send a handover request to the second base station according to the measurement result sent by the user equipment, where the handover request includes information that the user equipment is performing D2D communication, and/or D2D used by the user equipment.
  • a distribution mode and a resource location of the communication resource receiving configuration information returned by the second base station according to the handover request, where the configuration information includes a time-frequency location of a resource pool configured by the second base station according to the second mode; and/or the second base station Whether the information of the first mode resource allocation mode is supported; and/or the second base station allocates the resource location of the resource according to the first mode; and reconfigures the configuration information to the user equipment.
  • the central processing unit 901 can be configured to:
  • the resource selection device may be configured separately from the central processing unit.
  • the resource selection device may be configured as a chip (such as the resource selection unit 940) connected to the central processing unit 901, and implemented by the control of the central processing unit.
  • the function of the resource selection device may be further include: a transceiver 920, an antenna 930, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again.
  • the base station 900 does not have to include all the components shown in FIG. 9; in addition, the base station 900 may further include components not shown in FIG. 9, and reference may be made to the prior art.
  • the user equipment can use the resource selected from the resource pool configured by the first base station or the second base station according to the second mode to communicate in a predetermined period, so that the user equipment is convenient.
  • the corresponding resources can be selected for D2D communication to ensure the continuity of D2D communication.
  • Embodiment 8 of the present invention provides a base station.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 1000 can include: a central processing unit (CPU) 1001 and a memory 1010; the memory 1010 is coupled to the central processing unit 1001.
  • the memory 1010 can store various data; in addition, a program for resource selection is stored, and the program is executed under the control of the central processing unit 1001 to receive a handover request sent by the source base station, etc., and send configuration information to the source base station, and the like. .
  • the central processing unit 1001 may be configured to: receive a handover request sent by the first base station, where the handover request includes information that the user equipment is performing D2D communication, and/or a D2D communication resource used by the user equipment.
  • the allocation mode and the resource location returning configuration information to the first base station according to the handover request, where the configuration information includes a time-frequency location of the resource pool configured by the second base station according to the second mode; and/or whether the second base station supports Information of a first mode resource allocation manner; and/or the second base station allocates a resource location of the resource according to the first mode.
  • the central processing unit 1001 may be further configured to: notify, by the second base station, the user equipment that is allocated according to the first mode.
  • the central processing unit 1001 is further configured to: the second base station send indication information indicating that the user equipment uses the first resource allocated according to the first mode, so that the user equipment releases the resource pool.
  • the resource selection device may be configured separately from the central processing unit, for example, the resource selection device may be configured as a chip (such as the resource selection unit 1040) connected to the central processing unit 1001, and implemented by the control of the central processing unit.
  • the function of the resource selection device may further include: a transceiver 1020, an antenna 1030, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and are not described herein again.
  • the base station 1000 does not necessarily have to include all of the components shown in FIG. 10; however, the base station 1000 may also include components not shown in FIG. 10, and reference may be made to the prior art.
  • the user equipment can use the first base station or the second base station according to the specified period.
  • the resources selected in the resource pool configured in the second mode are communicated, so that the user equipment can select a corresponding resource for D2D communication in a scenario such as handover or failure reconstruction to ensure continuity of D2D communication.
  • FIG. 11 is a block diagram showing the configuration of a communication system in accordance with a ninth embodiment of the present invention.
  • the communication system 1100 includes a user equipment 1101, a first base station 1102, and a second base station 1103;
  • the physical layer out-of-synchronization indication information is received from the user equipment 1101 to the first resource allocated by the second base station 1103 that is re-established with the user equipment according to the first mode.
  • the device 1101 re-establishes a third period of initialization to receive the first resource allocated by the second base station 1103 in connection with the user equipment 1101 according to the first mode, or after receiving the re-establishment request from the user equipment 1101 to receive re-establishment of the connection with the user equipment 1101.
  • the second base station 1103 selects, according to the fourth period of the first resource allocated in the first mode, the user equipment 1101 selects a resource for D2D communication from the resource pool configured by the first base station 1102 or the second base station 1103 according to the second mode.
  • the resource pool allocated by the base station according to the first mode and configured according to the second mode is as described in the foregoing embodiment, and details are not described herein again.
  • the failure of triggering the initialization re-establishment process is a radio link failure (RLF)
  • RLF radio link failure
  • the user equipment 1101 selects a resource for D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, The first resource allocated by the base station according to the first mode is not used.
  • the failure of triggering the initialization re-establishment process is a handover failure
  • a second period ( ⁇ 2) of the allocated first resource the user equipment 1101 selects a resource for D2D communication from a resource pool configured by the first base station or the second base station according to the second mode, without using the base station to allocate according to the first mode.
  • the first resource is a handover failure
  • the failure of triggering the initialization re-establishment process is a base station reconfiguration failure, an under-layer completion verification failure, or a handover failure
  • the user equipment 1101 selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode. , without using the first resource allocated by the base station according to the first mode.
  • the failure of triggering the initialization re-establishment process is a handover failure
  • the first resource allocated according to the first mode is sent by the second base station that is connected to the user equipment 1101 after receiving the re-establishment request from the user equipment 1101.
  • the fourth period ( ⁇ 4) the user equipment 1101 selects resources for performing D2D communication from the resource pool configured by the first base station or the second base station according to the second mode, without using the first resource allocated by the base station according to the first mode.
  • the user equipment 1101 after receiving the configuration information that triggers the user equipment 1101 to connect to the second base station, the user equipment 1101 disconnects the connection with the first base station, and establishes a connection with the second base station through a random access procedure.
  • the user equipment 1101 receives, from the user equipment 1101, a configuration that triggers the connection of the user equipment 1101 to the second base station to a second period ( ⁇ 2) of receiving the first resource allocated by the second base station according to the first mode
  • the user equipment 1101 A base station or a second base station selects resources for D2D communication in a resource pool configured according to the second mode, and does not use the first resource allocated by the base station according to the first mode.
  • the user equipment 1101 After the user equipment 1101 receives the resource pool configured by the second base station according to the second mode, selecting a resource for performing D2D communication from the resource pool configured by the second base station; and receiving, by the user equipment 1101, the second base station according to the second base station Before the resource pool configured in the second mode, the resource for performing D2D communication is selected from the resource pool configured by the first base station according to the second mode.
  • the resource pool after the user equipment 1101 receives the first resource allocated by the second base station according to the first mode, or after receiving the indication information that the second base station indicates that the user equipment uses the first resource, The resource pool.
  • the method may further include: When the device 1101 receives the reconfiguration information and fails to successfully switch to the second base station within the first predetermined time, the second period includes: a period from when the first predetermined time is exceeded until the first resource is received; The first predetermined time is less than the time from the receipt of the configuration information by the user equipment 1101 to the successful connection to the second base station.
  • the method may further include: The user equipment 1101 re-establishes the initialization start, and when the suitable cell is not selected in the second predetermined time, the third period includes: a period from when the second predetermined time is exceeded until the first resource is received; wherein the second The predetermined time is less than the time from the start of the reconstruction initialization to the selection to the appropriate cell.
  • the configuration of the user equipment 1101 can be referred to the embodiment 5, and the content thereof is incorporated herein, and details are not described herein again.
  • the first base station 1102 is further configured to send, according to the measurement result sent by the user equipment, a handover request to the second base station 1103, where the handover request includes information that the user equipment is performing D2D communication, and/or the user equipment The allocation mode and resource location of the used D2D communication resource; receiving the configuration information returned by the second base station 1103 according to the handover request, the configuration information including the time-frequency location of the resource pool configured by the second base station 1103 according to the second mode; and/or Whether the second base station supports the information of the first mode resource allocation manner; and/or the second base station 1103 allocates the resource location of the resource according to the first mode.
  • the first base station 1102 is further configured to configure configuration information to the user equipment 1101.
  • the configuration of the base station 1102 can be referred to the embodiment 7, and the content thereof is incorporated herein, and details are not described herein.
  • the second base station 1103 is further configured to receive a handover request sent by the first base station 1102, where the handover request includes information that the user equipment 1101 is performing D2D communication, and/or D2D communication used by the user equipment 1101. a resource allocation mode and a resource location; returning configuration information to the first base station 1102 according to the handover request, where the configuration information includes a time-frequency location of the resource pool configured by the second base station 1103 according to the second mode; and/or the second Whether the base station 1103 supports the information of the first mode resource allocation mode; and/or the second base station 1103 allocates the resource location of the resource according to the first mode.
  • the second base station 1103 is further configured to notify the user equipment 1101 of the first resource allocated according to the first mode.
  • the second base station 1103 is further configured to send indication information indicating that the user equipment 1101 uses the first resource allocated according to the first mode, so that the user equipment 1101 releases the resource pool.
  • the configuration of the second base station 1103 can be referred to the embodiment 8, and the content thereof is incorporated herein, and details are not described herein again.
  • the communication system may further include other user equipments (not shown), and the user equipment 1101 uses the resources of the mode 2 for the D2D communication with the other user equipments within the predetermined time.
  • the embodiment of the invention further provides a computer readable program, wherein in the resource selection device or the user equipment When the program is executed, the program causes the computer to execute the resource selection method of Embodiment 1 or 2 or 3 in the device or user equipment.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the resource selection method of Embodiment 1 or 2 or 3 in a resource selection device or a user equipment.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods or steps described above. .
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

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Abstract

一种资源选择装置和通信***，其中，该装置包括：第一选择单元，用于用户设备与第一基站断开连接后，在从用户设备接收到物理层失步指示信息到接收到与用户设备重建连接的第二基站按照第一模式分配的第一资源的第一期间，或者在从用户设备接收到触发用户设备切换到第二基站的配置信息到接收到第二基站按照第一模式分配的第一资源的第二期间，或者在从用户设备重建初始化到接收到与用户设备重建连接的第二基站按照第一模式分配的第一资源的第三期间，或者在从用户设备发送重建请求到接收到与用户设备重建连接的第二基站按照第一模式分配的第一资源的第四期间，从第一基站或第二基站按照第二模式配置的资源池中选择进行通信的资源。通过该资源选择装置和通信***，可便于用户设备选择相应的资源进行D2D通信，以确保D2D通信的连续性，避免中断。

Description

资源选择装置和通信*** 技术领域
本发明涉及通信领域， 特别涉及一种资源选择装置和通信***。 背景技术
设备对设备 （D2D， Device-to-Device) 通信方式是指数据包无需通过核心网,甚 至不通过基站， 两个用户设备（UE1和 UE2)之间直接建立通信链路进行通信。 图 1 是属于同一个基站的两个用户设备建立 D2D通信的示意图； 图 2是属于不同基站的 两个用户设备建立 D2D通信示意图。
在用户设备进行 D2D直接通信之前， 基站需给该用户设备分配通信资源。 基站 分配 D2D通信资源的模式包括模式 l(Mode 1)和模式 2(Mode 2)。
模式 1的资源分配方式， 基站调度的分配方式。在基站调度模式 1资源之前， 用 户设备需要进入无线资源控制（RRC， Radio Resource Control)连接态（RRC_Connected state),并通过缓冲状态报告 （BSR， Buffer State Report) 等方式向基站发送资源请求， 该基站接收到请求后， 为该用户设备分配资源。
模式 2的资源分配方式，基站通过广播或者专用信令通知用户设备资源池的时频 位置。在用户设备没有基站覆盖时， 模式 2资源池会预置在该用户设备。 该用户设备 获得该资源池后， 可自主地从该资源池中选择资源用于 D2D通信。
应该注意， 上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、 完整的说明， 并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发 明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。 发明内容
对于没有基站覆盖的用户设备,只能使用模式 2资源。 但对于两种资源分配模式 都可用的用户设备,选择使用哪个模式的资源， 目前还没有解决的办法。
为解决以上问题，本发明实施例提供一种资源选择装置和通信***，通过该装置 可便于用户设备选择相应的资源进行通信， 以确保 D2D通信的连续性， 避免中断。 本发明实施例的第 1方面提供一种资源选择装置， 包括：
第一选择单元， 该第一选择单元用于在用户设备与第一基站断开连接后，在从该 用户设备接收到物理层失步指示信息到接收到与该用户设备重建连接的第二基站按 照第一模式分配的第一资源的第一期间，或者在从该用户设备接收到触发该用户设备 切换到第二基站的配置信息到接收到该第二基站按照第一模式分配的第一资源的第 二期间，或者在从该用户设备重建初始化到接收到与该用户设备重建连接的第二基站 按照第一模式分配的第一资源的第三期间，或者在从该用户设备发送重建请求到接收 到与该用户设备重建连接的第二基站按照第一模式分配的第一资源的第四期间，从第 一基站或第二基站按照第二模式配置的资源池中选择进行设备对设备（D2D)通信的 资源。
本发明实施例的第 2方面提供一种资源选择装置， 包括：
第一发送单元，该第一发送单元用于根据用户设备发送的测量结果向第二基站发 送切换请求， 该切换请求包括该用户设备正在进行 D2D通信的信息、 和 /或该用户设 备所使用的 D2D通信资源的分配模式和资源位置；
第一接收单元，该第一接收单元用于接收该第二基站根据该切换请求返回的配置 信息， 该配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或该第 二基站是否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式分配 资源的资源位置；
第一配置单元， 该第一配置单元用于将该配置信息配置给该用户设备。
本发明实施例的第 3方面提供一种通信***， 包括第一基站、第二基站和用户设 备， 其中，
该用户设备， 与第一基站断开连接后，在从该用户设备接收到物理层失步指示信 息到接收到与该用户设备重建连接的第二基站按照第一模式分配的第一资源的第一 期间，或者在从该用户设备接收到触发该用户设备切换到第二基站的配置信息到接收 到该第二基站按照第一模式分配的第一资源的第二期间，或者在从该用户设备重建初 始化到接收到与该用户设备重建连接的第二基站按照第一模式分配的第一资源的第 三期间，或者在从该用户设备发送重建请求到接收到与该用户设备重建连接的第二基 站按照第一模式分配的第一资源的第四期间，该用户设备从第一基站或第二基站按照 第二模式配置的资源池中选择进行设备对设备 （D2D) 通信的资源。 本发明实施例的有益效果在于：用户设备可以在规定的期间使用从第一基站或第 二基站按照第二模式配置的资源池中选择的资源进行通信，便于用户设备在切换或失 败重建等场景中能够选择相应的资源进行 D2D通信， 以确保 D2D通信的连续性， 避 免中断。 参照后文的说明和附图， 详细公开了本发明的特定实施方式，指明了本发明的原 理可以被采用的方式。应该理解， 本发明的实施方式在范围上并不因而受到限制。在 所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多 个其它实施方式中使用， 与其它实施方式中的特征相组合， 或替代其它实施方式中的 特征。
应该强调， 术语"包括 /包含"在本文使用时指特征、 整件、 步骤或组件的存在， 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。 附图说明
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部 分， 用于例示本发明的实施方式， 并与文字描述一起来阐释本发明的原理。 显而易见 地， 下面描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。 在附图中： 图 1是属于同一个基站的两个用户设备建立 D2D通信的示意图；
图 2是属于不同基站的两个用户设备建立 D2D通信示意图；
图 3是本发明实施例 1中的资源选择方法流程图；
图 4A和图 4B是本发明实施例 2中的资源选择方法流程图；
图 5A和图 5B是本发明实施例 3中的资源选择方法流程图；
图 6是本发明实施例 4中的资源选择装置构成示意图；
图 7是本发明实施例 5中的用户设备构成示意图；
图 8是本发明实施例 6中的资源选择装置构成示意图；
图 9是本发明实施例 7中的基站构成示意图；
图 10是本发明实施例 8中的基站构成示意图； 图 11是本发明实施例 9中的通信***构成示意图。 具体实施方式
参照附图， 通过下面的说明书， 本发明的前述以及其它特征将变得明显。在说明 书和附图中， 具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原 则的部分实施方式， 应了解的是， 本发明不限于所描述的实施方式， 相反， 本发明包 括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本发明 的各种实施方式进行说明。
实施例 1
本发明实施例 1提供了一种资源选择方法，图 3是该方法的流程图，请参照图 3， 该方法包括：
步骤 301， 用户设备与第一基站断开连接后， 在从该用户设备接收到物理层失步 指示信息到接收到与该用户设备重建连接的第二基站按照第一模式分配的第一资源 的第一期间，或者在从该用户设备接收到触发该用户设备切换到第二基站的配置信息 到接收到该第二基站按照第一模式分配的第一资源的第二期间，或者在从该用户设备 重建初始化到接收到与该用户设备重建连接的第二基站按照第一模式分配的第一资 源的第三期间，或者在从该用户设备发送重建请求到接收到与该用户设备重建连接的 第二基站按照第一模式分配的第一资源的第四期间，该用户设备从第一基站或第二基 站按照第二模式配置的资源池中选择进行 D2D通信的资源。
在本实施例中，基站按照第一模式分配的第一资源可以是基站调度的分配方式分 配的资源， 可称之为模式 1 资源； 基站按照第二模式配置资源池， 可称之为模式 2 资源池， 该用户设备从该资源池选择进行 D2D通信的资源， 该第一模式和第二模式 对应背景技术所述的 Model和 Mode2。
由上述实施例可知，在该用户设备与一个基站断开连接，再连接到另一个基站时， 在收到该另一个基站按照第一模式分配的第一资源前，从上述基站按照第二模式配置 的资源池中选择进行 D2D通信的资源， 从而确保 D2D通信的连续性， 避免中断。
在本实施例中， 在切换场景下， 该第一基站可以是源基站， 该第二基站可以是目 标基站； 或者在失败重建场景下， 该第一基站是用户设备发生失败时所在的基站， 该 第二基站是与该用户设备重建连接的基站， 该第二基站可以是该第一基站， 也可以是 其他基站。
例如， 对于失败重建场景：
该用户设备发生失败， 与第一基站断开连接， 该用户设备触发初始化重建过程， 选择合适的小区并重建连接到该小区的基站， 如第二基站。其中， 在发生无线链路失 败 （Radio Link Failure, RLF)、 切换失败、 基站重配失败、 底层完整性校验失败时， 可触发初始化重建过程。
在本实施例中， 在触发初始化重建过程的失败是无线链路失败 （Radio Link Failure, RLF) 时， 在从该用户设备接收到物理层失步指示信息到接收到与该用户设 备重建连接的第二基站按照第一模式分配的第一资源的第一期间 （Tl )， 该用户设备 从第一基站或第二基站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而 不使用基站按照第一模式分配的第一资源。
在本实施例中，在触发初始化重建过程的失败是切换失败时，在从该用户设备接 收到触发该用户设备切换到第二基站的配置信息到接收到该第二基站按照第一模式 分配的第一资源的第二期间 （Τ2)， 该用户设备从第一基站或第二基站按照第二模式 配置的资源池中选择进行 D2D通信的资源， 而不使用基站按照第一模式分配的第一 资源。
在本实施例中，在触发初始化重建过程的失败是基站重配失败、底层完成性校验 失败、切换失败时，在从该用户设备重建初始化到接收到与该用户设备重建连接的第 二基站按照第一模式分配的第一资源的第三期间 （Τ3 )， 该用户设备从第一基站或第 二基站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而不使用基站按照 第一模式分配的第一资源。
在本实施例中，在触发初始化重建过程的失败是切换失败时，在从该用户设备发 送重建请求到接收到与该用户设备重建连接的第二基站按照第一模式分配的第一资 源的第四期间 （Τ4)， 该用户设备从第一基站或第二基站按照第二模式配置的资源池 中选择进行 D2D通信的资源， 而不使用基站按照第一模式分配的第一资源。
例如， 在切换场景下：
在用户设备收到触发该用户设备切换到第二基站的配置信息后，断开与第一基站 的连接， 并通过随机接入过程， 与第二基站建立连接。
从该用户设备接收到触发该用户设备切换到第二基站的配置信息到接收到该第 二基站按照第一模式分配的第一资源的第二期间 （T2)， 该用户设备从第一基站或第 二基站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而不使用基站按照 第一模式分配的第一资源。
通过本实施例的上述资源选择方法可知，用户设备可以在该第一期间、第二期间、 第三期间或第四期间使用从第一基站或第二基站按照第二模式配置的资源池中选择 的资源进行通信，便于用户设备在切换或失败重建等场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连续性。
在本实施例中， 在该第一期间、 第二期间、 第三期间或第四期间， 该用户设备既 可选择第一基站配置的资源池中的资源， 也可选择第二基站配置的资源池中的资源； 此外， 还可以采用如下方式选择资源：
在该用户设备接收到该第二基站按照第二模式配置的资源池后，从该第二基站配 置的资源池中选择进行 D2D通信的资源； 在该用户设备接收到该第二基站按照第二 模式配置的该资源池前， 从该第一基站按照第二模式配置的资源池中选择进行 D2D 通信的资源。
例如， 在用户设备进行小区间切换时， 可以使用源基站或目标基站配置的模式 2 资源池； 或者在该用户设备接收到该目标基站配置的资源池后， 从该目标基站配置的 资源池中选择进行 D2D通信的资源； 在该用户设备接收到该目标基站配置的资源池 前， 从该源基站配置的资源池中选择进行 D2D通信的资源。
例如，在用户设备进行失败重建时，可以使用用户设备发生失败时所在的基站或 重建连接的基站配置的模式 2资源池；或者在该用户设备接收到该重建连接的基站配 置的模式 2资源池后， 从该重建连接的基站配置的资源池中选择进行通信的资源； 在 该用户设备接收到该重建连接的基站配置的资源池前，从该用户设备发生失败时所在 的基站配置的资源池中选择进行 D2D通信的资源。
在本实施例中， 如图 3所示， 该方法还可包括：
步骤 302， 在该用户设备接收到该第二基站按照第一模式分配的第一资源后， 或 者在接收到该第二基站指示用户设备使用该第一资源的指示信息时， 释放该资源池； 其中， 在该用户设备连接到第二基站后， 在收到该指示信息后， 该用户设备停止 使用模式 2资源， 释放该模式 2资源池， 并向该第二基站请求第一资源， 并在该用户 设备获得基站分配的第一资源后， 使用第一资源。 上述资源池可包括第一基站、 和 /或第二基站按照第二模式配置的资源池。
例如， 在用户设备进行小区间切换时， 在用户设备接收到目标基站分配的模式 1 资源后， MAC层将被配置模式 1资源， 同时释放模式 2资源； 或者在用户设备接收 到目标基站的指示信息，指示该用户设备使用模式 1资源时， 该用户设备停止使用模 式 2资源， 并释放模式 2资源池， 并且还可向目标小区申请模式 1资源。
例如，在该用户设备进行失败重建时，在该用户设备接收到重建连接的基站分配 的模式 1资源后， MAC层将被配置模式 1资源， 同时释放模式 2的资源； 或者在该 用户设备接收到重建连接的基站的指示信息，指示该用户设备使用模式 1资源时，停 止使用模式 2资源， 并释放模式 2资源池， 并且还可向重建连接的基站申请模式 1 资源。
在本实施例中，如果用户设备切换成功使用的时间较短，则在较短的切换过程中， 可以不使用按照第二模式配置的资源池， 因此， 该方法还可以包括： 从该用户设备接 收到该重配置信息开始，在第一预定时间内未成功切换到该第二基站时， 该第二期间 包括： 从超过该第一预定时间开始直至接收到该第一资源的期间； 其中该第一预定时 间小于从该用户设备接收到该配置信息到成功连接到该第二基站的时间。
在本实施例中，如果用户设备重建过程使用的时间较短，则在较短的重建过程中， 可以不使用按照第二模式配置的资源池， 因此， 该方法还可以包括： 从该用户设备重 建初始化开始， 在第二预定时间内未选择到合适的小区时， 该第三期间包括： 从超过 该第二预定时间开始直至接收到该第一资源的期间； 其中， 该第二预定时间小于从重 建初始化开始到选择到合适的小区的时间。
在本实施例中， 在用户设备进行切换， 而与第一基站断开连接前， 该方法还可以 包括： 接收第一基站配置的配置信息；
其中， 该配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或 该第二基站是否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式 分配资源的资源位置。
在本实施例中，在该用户设备进行切换时， 该第一基站可根据用户设备发送的测 量结果向该第二基站发送切换请求， 该切换请求包括该用户设备正在进行 D2D通信 的信息、 和 /或该用户设备所使用的 D2D通信资源的分配模式和资源位置； 该第一基 站接收该第二基站根据该切换请求返回的配置信息后，将该配置信息配置给该用户设 备， 即重配置过程。
通过本实施例的上述资源选择方法可知，该用户设备可以在规定的期间使用从第 一基站或第二基站按照第二模式配置的资源池中选择的资源进行 D2D通信， 便于用 户设备在切换或失败重建等场景中能够选择相应的资源进行 D2D通信。
以下将分别对以切换场景和失败重建场景为例对资源选择方法进行详细说明。 实施例 2
本发明实施例 2提供了一种资源选择方法，针对于用户设备在小区间进行切换的 实施场景， 该方法包括： 用户设备与源基站断开连接后， 在从该用户设备接收到触发 该用户设备连接到目标基站的配置信息到接收到该目标基站按照第一模式分配的第 一资源的第二期间，该用户设备从源基站或目标基站按照第二模式配置的资源池中选 择进行 D2D通信的资源。
在本实施例中，第一模式分配的第一资源和第二模式配置的资源池的实施方式与 实施例 1相同， 此处不再重复。
图 4A是本实施例 2的资源选择方法流程图， 对于切换场景， 请参照图 4A， 该 方法包括：
步骤 401，源基站通知用户设备（UE)该源基站配置的模式 2资源池的时频位置， 并通知该用户设备， 其可使用模式 1资源；
在本实施例中，该源基站可以通过广播或专用信令通知用户设备模式 2资源池的 时频位置； 和 /或该源基站可通过广播或专用信令通知用户设备， 其可以申请使用模 式 1资源。
步骤 402， 该用户设备上报测量结果；
在本实施例中， 该用户设备测量信道质量， 例如参考信号接收功率 （Reference Signal Receiving Power, RSRP) 和参考信号接收质量 （Reference Signal Receiving Quality, RSRQ), 用户设备将上述测量结果上报至该源基站。
步骤 403， 该源基站根据测量结果向目标基站发送切换请求；
在本实施例中， 该切换请求可包括该用户设备正在进行 D2D通信的信息、 和 /或 该用户设备所使用的 D2D通信资源的分配模式和资源位置。
步骤 404， 该目标基站接收到该切换请求后， 将配置信息发送给该源基站； 在本实施例中， 该配置信息可包括目标基站按照模式 2 配置的资源池的时频位 置； 和 /或该目标基站是否支持模式 1资源分配方式的信息； 和 /或该目标基站按照模 式 1分配资源的资源位置。
步骤 405， 该源基站收到该目标基站的配置信息后， 对该用户设备进行重配置； 在本实施例中， 该源基站将该配置信息配置给该用户设备，其中配置的方式可采 用现有的任何一种方式， 如通过高层信令或其他信令将该配置信息通知该用户设备 等。 步骤 406， 与目标基站建立连接， 其中， 从该用户设备接收到该配置信息， 到接 收到该目标基站按照模式 1分配的资源的第二期间，该用户设备从该源基站或目标基 站按照模式 2配置的资源池中选择进行 D2D通信的资源；
在本实施例中， 若该配置信息通过 RRC连接重配置消息进行配置时， 该用户设 备在收到含有 Mobility Control Info IE的 RRC连接重配置消息时， 启动 T304计时器 开始计时， 断开与源基站的连接， 并通过随机接入， 与该目标基站建立连接， T304 计时器停止计时。
步骤 407， 该用户设备向该目标基站发送资源请求。
步骤 408， 该目标基站为该用户设备分配第一资源。
步骤 409， 该目标基站将分配的资源通知该用户设备， 该用户设备成功接收到该 目标小区分配的第一资源。
在本实施例中， 从 T304计时器启动开始， 到成功收到目标小区分配的模式 1资 源的时间段 （时间段 T2内）， 该用户设备从模式 2资源池中选择进行 D2D通信的资 源， 而不使用模式 1资源； 其中， 关于 T304的具体设定方法可参考现有标准， 此处 不再赘述。
在一个实施方式中， 该用户设备还可设置第一计时器， 在步骤 406中， 在该用户 设备收到含有 Mobility Control Info IE的 RRC连接重配置消息时， 在 T304计时器启 动的同时， 还可以启动该第一计时器（ΤΓ )， 待该第一计时器超时后， 到成功收到目 标小区分配的模式 1资源前 （时间段 Τ2' )， 该用户设备从模式 2资源池中选择资源 用于 D2D通信， 而不使用模式 1资源； 其中 ΤΓ小于 Τ304。 由此可知， 在该用户设 备切换到该目标设备所需的时间较短时， 该用户设备可以不考虑在该 T'内使用的资 源。 在本实施例中， 该用户设备可以使用该源基站或该目标基站配置的模式 2 资源 池； 或者在该用户设备接收到该目标基站配置的模式 2资源池后， 从该目标基站配置 的资源池中选择进行 D2D通信的资源； 在该用户设备接收到该目标基站配置的模式 2资源池前， 从该源基站配置的模式 2资源池中选择进行 D2D通信的资源。
如图 4A所示， 该方法还包括：
步骤 410， 该用户设备成功接收到该目标基站分配的模式 1资源后， 停止从模式 2资源池中选择进行 D2D通信的资源。
步骤 411， 在该用户设备接收到该目标基站分配的模式 1资源后， 该用户设备释 放模式 2资源池；
其中， 该用户设备接收到该目标基站分配的模式 1资源后， MAC层将被配置模 式 1资源， 同时释放模式 2的资源池。
在另一个实施例中， 如图 4B所示， 在上述时间段 T2、 T2'内， 在步骤 406后， 该用户设备接收到该目标基站发送的指示该用户设备使用模式 1资源的指示信息（见 步骤 406' )， 该用户设备停止使用模式 2资源， 释放模式 2资源池 （见步骤 410' 和 步骤 411' )， 向该目标小区请求模式 1资源 （见步骤 407)。
在上述实施例中， 步骤 410和步骤 411、 步骤 410'和 411 '的顺序可互换， 或同时 进行。
通过本实施例的上述资源选择方法可知，该用户设备可以在切换时接收到源基站 发送的重配置信息后到接收到目标小区分配的模式 1资源前，从模式 2资源池中选择 资源用于 D2D通信， 以保证 D2D通信的连续性。 实施例 3
本发明实施例 3 提供了一种资源选择方法， 针对于用户设备失败重建的实施场 景， 在本实施例中， 触发初始化重建过程的失败主要有： 无线链路失败 (Radio link failure, RLF), 切换失败， 基站重配失败， 底层完整性校验失败等；
在本实施例中，第一模式分配的第一资源和第二模式配置的资源池的实施方式与 实施例 1相同， 此处不再重复。在本实施例中该第二基站可以是该第一基站， 也可以 是其他基站。
图 5A是本实施例 3的资源选择方法流程图， 请参照图 5A， 该方法包括： 步骤 501， 该第一基站通知用户设备（UE)该第一基站配置的模式 2资源池的时 频位置； 通知用户设备， 其可使用模式 1资源；
在本实施例中， 与步骤 401类似， 该第一基站可以通过广播或专用信令通知该用 户设备模式 2资源池的时频位置； 和 /或该第一基站可通过广播或专用信令通知该用 户设备， 其可以申请使用模式 1资源。
步骤 503 505， 在用户设备发生失败后， 触发初始化重建过程， 选择一个合适的 小区后， 发送 RRC连接重建请求；
在本实施例中， 在触发初始化重建开始， 启动计时器 T311开始计时， 选择到合 适的小区， 如该第二基站的小区， 该计时器 T311停止。
步骤 506， 该用户设备接收到该第二基站返回的 RRC连接重建成功或失败的消 息；
在本实施例中， 在该用户设备向该第二基站发送该 RRC连接重建请求时， 可启 动计时器 T301开始计时，到收到该第二基站反馈的 RRC连接重建成功 /失败的消息， 该计时器 T301停止；
在接收到连接重建成功的消息时， 该用户设备与第二基站建立连接， 如果接收到 连接重建失败的消息时， 该用户设备重建失败， 但该用户设备还可执行步骤 505， 发 送建立连接请求， 与第二基站建立连接。
步骤 507， 该用户设备与该第二基站成功建立 RRC连接；
在本实施例中， 该建立 RRC连接的过程与现有技术类似， 此处简要说明， 首先 进行小区选择； 该用户设备向选定的第二基站发送 RRC连接请求； 该第二基站接收 到该 RRC连接请求后， 向该用户设备返回 RRC连接建立消息； 该用户设备接收到该 RRC连接建立消息后， 向该第二基站发送 RRC连接建立完成消息， 这样成功建立该 用户设备与该第二基站之间的连接。
在上述实施例中，在步骤 503的重建初始化过程选择的小区与在步骤 507中选择 的小区可相同也可不同， 即该第二基站也可相同或不同。步骤 508〜步骤 512， 与实施 例 2图 4A的步骤 407 411类似， 此处不再赘述。
在本实施例中， 对于无线链路失败场景， 该方法还包括：
步骤 502， 接收到物理层失步指示信息；
其中， 在接收到该物理层失步指示信息后， 可启动计时器 T310开始计时， 在收 到物理层同步指示信息、或切换过程被触发，或开始重建初始化过程，该计时器 T310 停止。
在上述实施例中， 对于无线链路失败， 从 T310启动， 到用户设备在成功收到重 建成功分配的模式 1资源的时间段（时间段 Tl )， 该用户设备从模式 2资源池中选择 进行 D2D通信的资源， 而不使用模式 1资源；
对于切换失败场景， 与实施例 2的情况类似， 该用户设备收到第一基站配置的配 置信息时， 计时器 Τ304启动， 该用户设备切换到第二基站且切换失败。 在该切换失 败后， 该用户设备通过重建初始化过程、 重建连接过程 （如图 5步骤 503 507) 与第 二基站建立连接。这样，从 Τ304启动，到用户设备成功收到重建连接小区的基站（如 第二基站）分配的模式 1资源的时间段（时间段 Τ2)， 该用户设备从模式 2资源池中 选择进行 D2D通信的资源， 而不使用模式 1资源；
在步骤 503中， 从触发重建初始化， 启动计时器 T311开始计时， 到用户设备成 功收到重建连接小区分配的模式 1资源的时间段 （时间段 Τ3 )， 该用户设备从模式 2 资源池中选择进行 D2D通信的资源， 而不使用模式 1资源；
在步骤 505中， 从发送 RRC连接重建请求开始， 到用户设备成功收到重建连接 小区分配的模式 1资源的时间段（时间段 Τ4)， 该用户设备从模式 2资源池中选择进 行 D2D通信的资源， 而不使用模式 1资源。
对于基站重配失败，底层完整性校验失败等原因引起的失败时， 该用户设备发起 重建初始化过程， 从计时器 T311启动， 到用户设备成功收到重建连接小区分配的模 式 1资源的时间段 （时间段 Τ3 )， 该用户设备从模式 2资源池中选择进行 D2D通信 的资源， 而不使用模式 1资源。
在本实施中， 该用户设备还可设置第二计时器 （Τ2" )， 在开始重建初始化， 启 动该第二计时器， 在该第二计时器超时， 到用户设备成功收到重建连接小区分配的模 式 1资源的时间段 （时间段 Τ3' )， 该用户设备从模式 2资源池中选择资源用于 D2D 通信， 而不使用模式 1资源； 其中， Τ2"小于 Τ311。
在本实施例中， 以上定时器 Τ310， Τ304, T311 , T301的实施方式可参考现有标 准， 此处不再赘述。
在另一个实施例中， 如图 5Β所示， 在上述时间段 Tl、 T2、 T3、 T3'和 Τ4内， 在该用户设备接收到该目标基站发送的指示该用户设备使用模式 1 资源的指示信息 (见步骤 507' )， 该用户设备停止使用模式 2资源， 释放模式 2资源池 （见步骤 51 Γ 和步骤 512' )， 向该目标小区请求模式 1资源 （见步骤 508)。 在上述实施例中， 步骤 511和步骤 512、 步骤 511 '和 512'的顺序可互换， 或同时进行。
在实施例 2和实施例 3的步骤 407和 508中，在用户设备向该目标基站发送资源 请求之前， 该方法还可以包括： 判断接收到的配置信息中是否包含模式 1资源， 在该 配置信息中不包含模式 1资源的情况下， 用户设备执行步骤 407和 508， 即向目标基 站发送模式 1资源请求。
在上述实施例中， 该用户设备可以使用失败发生的基站（第一基站）或重建连接 的基站（第二基站）配置的模式 2资源池； 或者在该用户设备接收到该重建连接的基 站配置的模式 2资源池后， 从该重建连接的基站配置的资源池中选择进行 D2D通信 的资源； 在该用户设备接收到该重建连接的基站配置的模式 2资源池前， 从该失败发 生的基站配置的模式 2资源池中选择进行 D2D通信的资源。
通过本实施例的上述资源选择方法可知，用户设备可以在规定的期间使用从第一 基站或第二基站按照第二模式配置的资源池中选择的资源进行通信，便于用户设备在 失败重建场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连续性。 实施例 4
本发明实施例 4还提供了一种资源选择装置， 如下面的实施例 4所述， 由于该资 源选择装置解决问题的原理与实施例 1~3的方法类似，因此其具体的实施可以参照实 施例 1~3的方法的实施， 内容相同之处不再重复说明。
图 6是本发明实施例 4中的资源选择装置的构成示意图， 如图 6所示， 装置 600 包括：
第一选择单元 601， 其用于用户设备与第一基站断开连接后， 在从该用户设备接 收到物理层失步指示信息到接收到与该用户设备重建连接的第二基站按照第一模式 分配的第一资源的第一期间，或者在从该用户设备接收到触发该用户设备切换到第二 基站的配置信息到接收到该第二基站按照第一模式分配的第一资源的第二期间，或者 在从该用户设备重建初始化到接收到与该用户设备重建连接的第二基站按照第一模 式分配的第一资源的第三期间，或者在从该用户设备发送重建请求到接收到与该用户 设备重建连接的第二基站按照第一模式分配的第一资源的第四期间，从第一基站或第 二基站按照第二模式配置的资源池中选择进行通信的资源。
在本实施例中， 该第一基站和第二基站、 以及分配资源的第一模式和第二模式如 实施例 1~3所述， 此处不再赘述。
在本实施例中， 在用户设备触发初始化重建过程的失败是无线链路失败 （Radio Link Failure, RLF) 时， 在从该用户设备接收到物理层失步指示信息到接收到与该用 户设备重建连接的第二基站按照第一模式分配的第一资源的第一期间，第一选择单元 601从第一基站或第二基站按照第二模式配置的资源池中选择资源用于 D2D通信， 而不使用基站按照第一模式分配的第一资源。
在本实施例中，在用户设备进行切换或在用户设备触发初始化重建过程的失败是 切换失败时，在从该用户设备接收到触发该用户设备切换到第二基站的重配置信息到 接收到该第二基站按照第一模式分配的第一资源的第二期间，第一选择单元 601从第 一基站或第二基站按照第二模式配置的资源池中选择资源用于 D2D通信， 而不使用 基站按照第一模式分配的第一资源。
在本实施例中，在用户设备触发初始化重建过程的失败是基站重配失败、底层完 成性校验失败、切换失败等时，在从该用户设备重建初始化到接收到与该用户设备重 建连接的第二基站按照第一模式分配的第一资源的第三期间，第一选择单元 601从第 一基站或第二基站按照第二模式配置的资源池中选择资源用于 D2D通信， 而不使用 基站按照第一模式分配的第一资源。
在本实施例中，在用户设备触发初始化重建过程的失败是切换失败时，在从该用 户设备发送重建请求到接收到与该用户设备重建连接的第二基站按照第一模式分配 的第一资源的第四期间，第一选择单元 601从第一基站或第二基站按照第二模式配置 的资源池中选择资源用于 D2D通信， 而不使用基站按照第一模式分配的第一资源。
通过本实施例的上述资源选择装置可知，用户设备可以在该第一期间、第二期间、 第三期间或第四期间使用从第一基站或第二基站按照第二模式配置的资源池中选择 的资源进行通信，便于用户设备在切换或失败重建等场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连续性。
在本实施例中， 在该用户设备接收到该第二基站按照第二模式配置的资源池后， 第一选择单元 601从该第二基站配置的资源池中选择进行 D2D通信的资源； 在该用 户设备接收到该第二基站按照第二模式配置的该资源池前，第一选择单元 601从该第 一基站按照第二模式配置的资源池中选择进行 D2D通信的资源。
在一个实施方式中，在用户设备进行小区间切换时，第一选择单元 601可以选择 源基站或目标基站配置的模式 2资源池中的资源；或者在该用户设备接收到该目标基 站配置的模式 2资源池后，第一选择单元 601从该目标基站配置的资源池中选择进行 D2D通信的资源； 在该用户设备接收到该目标基站配置的模式 2资源池前， 第一选 择单元 601从该源基站配置的模式 2资源池中选择进行 D2D通信的资源。
在一个实施方式中，在用户设备进行失败重建时，第一选择单元 601可以使用失 败发生的基站或重建成功的基站配置的模式 2资源池中的资源；或者在该用户设备接 收到该重建成功的基站配置的模式 2资源池后，第一选择单元 601从该重建成功的基 站配置的资源池中选择进行 D2D通信的资源； 在该用户设备接收到该重建成功的基 站配置的模式 2资源池前，第一选择单元 601从该失败发生的基站配置的模式 2资源 池中选择进行 D2D通信的资源。
在本实施例中， 装置 600还包括：
第一释放单元 602， 其用于在该用户设备接收到该第二基站按照第一模式分配的 第一资源后， 或者在接收到该第二基站指示用户设备使用该第一资源的指示信息时， 释放该资源池。
在一个实施方式中，在用户设备进行小区间切换时，在用户设备接收到目标基站 分配的模式 1资源后， MAC层将被配置模式 1资源， 第一释放单元 602释放模式 2 的资源； 或者在用户设备接收到目标基站的指示信息， 指示该用户设备使用模式 1 资源时， 停止使用模式 2资源， 第一释放单元 602释放模式 2资源， 同时向目标小区 申请模式 1资源。
在一个实施方式中，在用户设备进行失败重建时，在用户设备接收到重建成功的 基站分配的模式 1资源后， MAC层将被配置模式 1资源， 第一释放单元 602释放模 式 2的资源； 或者在用户设备接收到重建成功的基站的指示信息， 要求用户设备使用 模式 1资源时， 停止使用模式 2资源， 第一释放单元 602释放模式 2资源， 同时向重 建成功的基站申请模式 1资源。
在本实施例中，如果用户设备切换成功占用的时间较短，则在较短的切换过程中， 可以不使用按照第二模式配置的资源池， 则装置 600还包括：
第一设定单元 603， 其用于设定第一预定时间， 该第一预定时间小于从该用户设 备接收到该重配置信息到成功连接到该第二基站的时间；
从该用户设备接收到该重配置信息开始，在该第一预定时间内未成功切换到该第 二基站时， 该第二期间包括： 从超过该第一预定时间开始直至接收到该第一资源的期 间。
在本实施例中，如果用户设备重建过程占用的时间较短，则在较短的重建过程中， 可以不使用按照第二模式配置的资源池， 则装置 600还包括：
第二设定单元 604， 其用于设定第二预定时间， 该第二预定时间小于从重建初始 化开始到选择到合适的小区的时间；
从该用户设备重建初始化开始，在该第二预定时间内未选择到合适的小区时， 该 第三期间包括： 从超过该第二预定时间开始直至接收到该第一资源的期间。
在本实施例中， 该装置还可以包括：
接收单元 605， 其用于接收第一基站重配置的配置信息；
其中， 该配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或 该第二基站是否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式 分配资源的资源位置。
在本实施例中， 该第一释放单元 602、 第一设定单元 603、 第二设定单元 604、 接收单元 605为可选单元。
在本实施例中，该第一期间、第二期间、第三期间和第四期间如实施例 1~3所述， 将其内容合并于此， 此处不再赘述。
通过本实施例的上述资源选择装置可知，用户设备可以在规定的期间使用从第一 基站或第二基站按照第二模式配置的资源池中选择的资源进行通信，便于用户设备在 切换或失败重建等场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连 续性。 实施例 5
本发明实施例提供一种用户设备，该用户设备包括如实施例 4所述的资源选择装 置。
图 7是本发明实施例的用户设备 700的***构成的一示意框图。如图 7所示，用 户设备 700可以包括中央处理器 701和存储器 740;存储器 740耦合到中央处理器 701。 值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构， 以实现电信功能或其他功能。
在一个实施方式中，资源选择装置的功能可以被集成到中央处理器 701中。其中， 中央处理器 701可以被配置为：
其中， 中央处理器 701可以被配置为： 与第一基站断开连接后， 在从该用户设备 接收到物理层失步指示信息到接收到与该用户设备重建连接的第二基站按照第一模 式分配的第一资源的第一期间，或者在从该用户设备接收到触发该用户设备切换到第 二基站的配置信息到接收到该第二基站按照第一模式分配的第一资源的第二期间，或 者在从该用户设备重建初始化到接收到与该用户设备重建连接的第二基站按照第一 模式分配的第一资源的第三期间，或者在从该用户设备发送重建请求到接收到与该用 户设备重建连接的第二基站按照第一模式分配的第一资源的第四期间，从第一基站或 第二基站按照第二模式配置的资源池中选择进行通信的资源；
其中， 基站按照第一模式分配第一资源、 按照第二模式配置的资源池如实施例
1~4所述， 将其内容合并于此， 此处不再赘述。。
在一个实施方式中， 中央处理器 701可以被配置为： 在该用户设备接收到该第二 基站按照第二模式配置的资源池后，从该第二基站配置的资源池中选择进行通信的资 源； 在该用户设备接收到该第二基站按照第二模式配置的该资源池前， 从该第一基站 按照第二模式配置的资源池中选择进行通信的资源。
在一个实施方式中， 中央处理器 701可以被配置为： 在该用户设备接收到该第二 基站按照第一模式分配的第一资源后，或者在接收到该第二基站指示用户设备使用该 第一资源的指示信息时， 释放该资源池。
在一个实施方式中， 中央处理器 701可以被配置为： 从该用户设备接收到该配置 信息开始， 在第一预定时间内未成功切换到该第二基站时， 该第二期间包括： 从超过 该第一预定时间开始直至接收到该第一资源的期间；
该第一预定时间小于从该用户设备接收到该配置信息到成功连接到该第二基站 的时间。
在一个实施方式中， 中央处理器 701可以被配置为： 从该用户设备重建初始化开 始， 在第二预定时间内未选择到合适的小区时， 该第三期间包括： 从超过该第二预定 时间开始直至接收到该第一资源的期间； 该第二预定时间小于从重建初始化开始到选择到合适的小区的时间。
在另一个实施方式中， 资源选择装置可以与中央处理器 701分开配置，例如可以 将资源选择装置配置为与中央处理器 701连接的芯片 （如资源选择单元 750)， 通过 中央处理器的控制来实现资源选择装置的功能。
如图 7所示， 该用户设备 700还可以包括： 通信模块 710、 输入单元 720、 音频 处理单元 730、 显示器 760、 电源 770。 值得注意的是， 用户设备 700也并不是必须 要包括图 7中所示的所有部件； 此外，用户设备 700还可以包括图 7中没有示出的部 件， 可以参考现有技术。
如图 7所示， 中央处理器 701有时也称为控制器或操作控件，可以包括微处理器 或其他处理器装置和 /或逻辑装置， 该中央处理器 701 接收输入并控制用户设备 700 的各个部件的操作。
其中， 存储器 740， 例如可以是缓存器、 闪存、 硬驱、 可移动介质、 易失性存储 器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述与失败有关的信 息， 此外还可存储执行有关信息的程序。 并且中央处理器 701 可执行该存储器 740 存储的该程序， 以实现配置信息、 重配置信息存储等。 其他部件的功能与现有类似， 此处不再赘述。用户设备 700的各部件可以通过专用硬件、 固件、 软件或其结合来实 现， 而不偏离本发明的范围。
通过本实施例的上述用户设备可知，用户设备可以在规定的期间使用从第一基站 或第二基站按照第二模式配置的资源池中选择的资源进行通信，便于用户设备在切换 或失败重建等场景中能够选择相应的资源进行 D2D通信，以保证 D2D通信的连续性。 实施例 6
本发明实施例 6还提供了一种资源选择装置，图 8是本实施例中资源选择装置构 成示意图， 如图 8所示， 资源选择装置 800包括：
第一发送单元 801， 其用于根据用户设备发送的测量结果向第二基站发送切换请 求， 该切换请求包括该用户设备正在进行 D2D通信的信息、 和 /或该用户设备所使用 的 D2D通信资源的分配模式和资源位置；
第一接收单元 802， 其用于接收该第二基站根据该切换请求返回的配置信息， 该 配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或该第二基站是 否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式分配资源的资 源位置；
第一配置单元 803， 其用于将该配置信息重配置给该用户设备。
通过本实施例的资源选择设备向用户设备重配置配置信息，则用户设备可以在规 定的期间使用从第一基站或第二基站按照第二模式配置的资源池中选择的资源进行 通信，便于用户设备在切换或失败重建等场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连续性。 实施例 7
本发明实施例 7提供一种基站， 该基站包括如实施例 6该的资源选择装置。 图 9是本发明实施例的基站的一构成示意图。 如图 9所示， 基站 900可以包括： 中央处理器 （CPU) 901和存储器 910; 存储器 910耦合到中央处理器 901。 其中该 存储器 910 可存储各种数据； 此外还存储资源选择的程序， 并且在中央处理器 901 的控制下执行该程序， 以接收该用户设备发送的测量结果等、并且向用户设备发送配 置信息等。
在一个实施方式中，资源选择装置的功能可以被集成到中央处理器 901中。其中， 中央处理器 901可以被配置为：根据用户设备发送的测量结果向第二基站发送切换请 求， 该切换请求包括该用户设备正在进行 D2D通信的信息、 和 /或该用户设备所使用 的 D2D通信资源的分配模式和资源位置； 接收该第二基站根据该切换请求返回的配 置信息， 该配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或该 第二基站是否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式分 配资源的资源位置； 将该配置信息重配置给该用户设备。
其中， 中央处理器 901可以被配置为：
在另一个实施方式中， 资源选择装置可以与中央处理器分开配置，例如可以将资 源选择装置配置为与中央处理器 901连接的芯片 （如资源选择单元 940)， 通过中央 处理器的控制来实现资源选择装置的功能。此外，如图 9所示，基站 900还可以包括： 收发机 920和天线 930等； 其中， 上述部件的功能与现有技术类似， 此处不再赘述。 值得注意的是， 基站 900也并不是必须要包括图 9中所示的所有部件； 此外， 基站 900还可以包括图 9中没有示出的部件， 可以参考现有技术。 通过本实施例的基站向用户设备重配置配置信息，则用户设备可以在规定的期间 使用从第一基站或第二基站按照第二模式配置的资源池中选择的资源进行通信，便于 用户设备在切换或失败重建等场景中能够选择相应的资源进行 D2D 通信， 以保证 D2D通信的连续性。 实施例 8
本发明实施例 8提供一种基站。 图 10是本发明实施例的基站的一构成示意图。 如图 10所示， 基站 1000可以包括： 中央处理器 (CPU) 1001和存储器 1010; 存储 器 1010耦合到中央处理器 1001。 其中该存储器 1010可存储各种数据； 此外还存储 资源选择的程序， 并且在中央处理器 1001的控制下执行该程序， 以接收该源基站发 送的切换请求等、 并且向源基站发送配置信息等。
在一个实施方式中， 中央处理器 1001可以被配置为： 接收第一基站发送的切换 请求， 该切换请求包括该用户设备正在进行 D2D通信的信息、 和 /或该用户设备所使 用的 D2D通信资源的分配模式和资源位置； 根据该切换请求向该第一基站返回配置 信息， 该配置信息包括该第二基站按照第二模式配置的资源池的时频位置； 和 /或该 第二基站是否支持第一模式资源分配方式的信息； 和 /或该第二基站按照第一模式分 配资源的资源位置。
在一个实施方式中， 中央处理器 1001还可以被配置为： 该第二基站将按照第一 模式分配的第一资源通知该用户设备。
在一个实施方式中， 中央处理器 1001还可以被配置为： 该第二基站发送指示该 用户设备使用按照第一模式分配的第一资源的指示信息，以使该用户设备释放该资源 池。
在另一个实施方式中， 资源选择装置可以与中央处理器分开配置，例如可以将资 源选择装置配置为与中央处理器 1001连接的芯片 （如资源选择单元 1040)， 通过中 央处理器的控制来实现资源选择装置的功能。此外， 如图 10所示， 基站 1000还可以 包括： 收发机 1020和天线 1030等； 其中， 上述部件的功能与现有技术类似， 此处不 再赘述。值得注意的是， 基站 1000也并不是必须要包括图 10中所示的所有部件； 此 夕卜， 基站 1000还可以包括图 10中没有示出的部件， 可以参考现有技术。
通过本实施例的基站，用户设备可以在规定的期间使用从第一基站或第二基站按 照第二模式配置的资源池中选择的资源进行通信，便于用户设备在切换或失败重建等 场景中能够选择相应的资源进行 D2D通信， 以保证 D2D通信的连续性。 实施例 9
图 11是本发明实施例 9的通信***构成示意图。 如图 11所示， 通信*** 1100 包括用户设备 1101、 第一基站 1102和第二基站 1103 ; 其中，
用户设备 1101与第一基站 1102断开连接后， 在从用户设备 1101接收到物理层 失步指示信息到接收到与该用户设备重建连接的第二基站 1103按照第一模式分配的 第一资源的第一期间，或者在从用户设备 1101接收到触发用户设备 1101切换到第二 基站 1103的配置信息到接收到第二基站 1103按照第一模式分配的第一资源的第二期 间，或者在从用户设备 1101重建初始化到接收到与用户设备 1101重建连接的第二基 站 1103按照第一模式分配的第一资源的第三期间，或者在从用户设备 1101发送重建 请求到接收到与用户设备 1101重建连接的第二基站 1103按照第一模式分配的第一资 源的第四期间， 用户设备 1101从第一基站 1102或第二基站 1103按照第二模式配置 的资源池中选择进行 D2D通信的资源。
在本实施例中，基站按照第一模式分配第一资源、按照第二模式配置的资源池如 上述实施例所述， 此处不再赘述。
在本实施例中， 在触发初始化重建过程的失败是无线链路失败 （Radio Link Failure, RLF) 时， 在从该用户设备 1101 接收到物理层失步指示信息到接收到与该 用户设备 1101重建连接的第二基站按照第一模式分配的第一资源的第一期间 （Tl )， 该用户设备 1101从第一基站或第二基站按照第二模式配置的资源池中选择进行 D2D 通信的资源， 而不使用基站按照第一模式分配的第一资源。
在本实施例中， 在触发初始化重建过程的失败是切换失败时， 在从该用户设备 1101接收到触发该用户设备 1101连接到第二基站的配置信息到接收到该第二基站按 照第一模式分配的第一资源的第二期间（Τ2)，该用户设备 1101从第一基站或第二基 站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而不使用基站按照第一 模式分配的第一资源。
在本实施例中，在触发初始化重建过程的失败是基站重配失败、底层完成性校验 失败、切换失败时， 在从该用户设备 1101重建初始化到接收到与该用户设备 1101重 建连接的第二基站按照第一模式分配的第一资源的第三期间 （T3 )， 该用户设备 1101 从第一基站或第二基站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而 不使用基站按照第一模式分配的第一资源。
在本实施例中， 在触发初始化重建过程的失败是切换失败时， 在从该用户设备 1101发送重建请求到接收到与该用户设备 1101重建连接的第二基站按照第一模式分 配的第一资源的第四期间（Τ4)，该用户设备 1101从第一基站或第二基站按照第二模 式配置的资源池中选择进行 D2D通信的资源， 而不使用基站按照第一模式分配的第 一资源。
在本实施例中，在用户设备 1101收到触发该用户设备 1101连接到第二基站的配 置信息后， 断开与第一基站的连接， 并通过随机接入过程， 与第二基站建立连接。 从 该用户设备 1101接收到触发该用户设备 1101连接到第二基站的配置信息到接收到该 第二基站按照第一模式分配的第一资源的第二期间（Τ2)，该用户设备 1101从第一基 站或第二基站按照第二模式配置的资源池中选择进行 D2D通信的资源， 而不使用基 站按照第一模式分配的第一资源。
在该用户设备 1101接收到该第二基站按照第二模式配置的资源池后， 从该第二 基站配置的资源池中选择进行 D2D通信的资源；在该用户设备 1101接收到该第二基 站按照第二模式配置的该资源池前，从该第一基站按照第二模式配置的资源池中选择 进行 D2D通信的资源。
在本实施例中， 在用户设备接 1101接收到该第二基站按照第一模式分配的第一 资源后， 或者在接收到该第二基站指示用户设备使用该第一资源的指示信息时，释放 该资源池。
在本实施例中， 如果用户设备 1101切换成功使用的时间较短， 则在较短的切换 过程中， 可以不使用按照第二模式配置的资源池， 因此， 该方法还可以包括： 从该用 户设备 1101接收到该重配置信息开始， 在第一预定时间内未成功切换到该第二基站 时， 该第二期间包括： 从超过该第一预定时间开始直至接收到该第一资源的期间； 其 中该第一预定时间小于从该用户设备 1101接收到该配置信息到成功连接到该第二基 站的时间。
在本实施例中， 如果用户设备 1101重建过程使用的时间较短， 则在较短的重建 过程中， 可以不使用按照第二模式配置的资源池， 因此， 该方法还可以包括： 从该用 户设备 1101重建初始化开始， 在第二预定时间内未选择到合适的小区时， 该第三期 间包括： 从超过该第二预定时间开始直至接收到该第一资源的期间； 其中， 该第二预 定时间小于从重建初始化开始到选择到合适的小区的时间。
在本实施例中， 用户设备 1101 的构成可参考实施例 5， 将其内容合并于此， 此 处不再赘述。
在本实施例中， 第一基站 1102还用于根据用户设备发送的测量结果向第二基站 1103发送切换请求， 该切换请求包括该用户设备正在进行 D2D通信的信息、和 /或该 用户设备所使用的 D2D通信资源的分配模式和资源位置；接收第二基站 1103根据该 切换请求返回的配置信息， 该配置信息包括第二基站 1103按照第二模式配置的资源 池的时频位置； 和 /或该第二基站是否支持第一模式资源分配方式的信息； 和 /或第二 基站 1103按照第一模式分配资源的资源位置。
在本实施例中， 第一基站 1102还用于， 将配置信息配置给用户设备 1101。
在本实施例中， 基站 1102的构成可参考实施例 7， 将其内容合并于此， 此处不 再赘述。
在本实施例中， 第二基站 1103还用于接收第一基站 1102发送的切换请求， 该切 换请求包括该用户设备 1101正在进行 D2D通信的信息、 和 /或该用户设备 1101所使 用的 D2D通信资源的分配模式和资源位置；根据该切换请求向该第一基站 1102返回 配置信息，该配置信息包括该第二基站 1103按照第二模式配置的资源池的时频位置; 和 /或该第二基站 1103是否支持第一模式资源分配方式的信息;和 /或该第二基站 1103 按照第一模式分配资源的资源位置。
在本实施例中， 第二基站 1103还用于将按照第一模式分配的第一资源通知该用 户设备 1101。
在本实施例中，第二基站 1103还用于发送指示该用户设备 1101使用按照第一模 式分配的第一资源的指示信息， 以使该用户设备 1101释放该资源池。
在本实施例中， 第二基站 1103 的构成可参考实施例 8， 将其内容合并于此， 此 处不再赘述。
在本实施例中， 该通信***还可以包括其他用户设备 （图中未示出）， 用户设备 1101在上述预定的时间内使用模式 2的资源， 与该其他用户设备进行 D2D通信。
本发明实施例还提供一种计算机可读程序，其中当在资源选择装置或用户设备中 执行该程序时，该程序使得计算机在该装置或用户设备中执行实施例 1或 2或 3该的 资源选择方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中该计算机可读 程序使得计算机在资源选择装置或用户设备中执行实施例 1或 2或 3该的资源选择方 法。
本发明以上的装置和方法可以由硬件实现， 也可以由硬件结合软件实现。本发明 涉及这样的计算机可读程序， 当该程序被逻辑部件所执行时， 能够使该逻辑部件实现 上文该的装置或构成部件， 或使该逻辑部件实现上文该的各种方法或步骤。逻辑部件 例如现场可编程逻辑部件、微处理器、 计算机中使用的处理器等。本发明还涉及用于 存储以上程序的存储介质， 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这 些描述都是示例性的， 并不是对本发明保护范围的限制。本领域技术人员可以根据本 发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围 内。

Claims

权 利 要 求 书
1、 一种资源选择装置， 包括：
第一选择单元，所述第一选择单元用于在用户设备与第一基站断开连接后，在从 所述用户设备接收到物理层失步指示信息到接收到与所述用户设备重建连接的第二 基站按照第一模式分配的第一资源的第一期间，或者在从所述用户设备接收到触发所 述用户设备切换到第二基站的配置信息到接收到所述第二基站按照第一模式分配的 第一资源的第二期间，或者在从所述用户设备重建初始化到接收到与所述用户设备重 建连接的第二基站按照第一模式分配的第一资源的第三期间，或者在从所述用户设备 发送重建请求到接收到与所述用户设备重建连接的第二基站按照第一模式分配的第 一资源的第四期间，从第一基站或第二基站按照第二模式配置的资源池中选择进行设 备对设备 （D2D) 通信的资源。
2、 根据权利要求 1所述的装置， 其中， 所述第一选择单元用于在所述用户设备 接收到所述第二基站按照第二模式配置的资源池后，从所述第二基站配置的资源池中 选择进行 D2D通信的资源； 在所述用户设备接收到所述第二基站按照第二模式配置 的所述资源池前， 从所述第一基站按照第二模式配置的资源池中选择进行 D2D通信 的资源。
3、 根据权利要求 1所述的装置， 其中， 所述装置还包括：
第一释放单元，所述第一释放单元用于在所述用户设备接收到所述第二基站按照 第一模式分配的第一资源后，或者在接收到所述第二基站指示用户设备使用所述第一 资源的指示信息时， 释放所述资源池。
4、 根据权利要求 1所述的装置， 其中， 所述装置还包括：
第一设定单元，所述第一设定单元用于设定第一预定时间，所述第一预定时间小 于从所述用户设备接收到所述配置信息到成功连接到所述第二基站的时间；
从所述用户设备接收到所述配置信息开始，在所述第一预定时间内未成功切换到 所述第二基站时，所述第二期间包括： 从超过所述第一预定时间开始直至接收到所述 第一资源的期间。
5、 根据权利要求 1所述的装置， 其中， 所述装置还包括：
第二设定单元，所述第二设定单元用于设定第二预定时间，所述第二预定时间小 于从重建初始化开始到选择到合适的小区的时间；
从所述用户设备重建初始化开始， 在所述第二预定时间内未选择到合适的小区 时，所述第三期间包括： 从超过所述第二预定时间开始直至接收到所述第一资源的期 间。
6、 一种资源选择装置， 包括：
第一发送单元，所述第一发送单元用于根据用户设备发送的测量结果向第二基站 发送切换请求， 所述切换请求包括所述用户设备正在进行 D2D通信的信息、 和 /或所 述用户设备所使用的 D2D通信资源的分配模式和资源位置；
第一接收单元，所述第一接收单元用于接收所述第二基站根据所述切换请求返回 的配置信息，所述配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 /或所述第二基站是否支持第一模式资源分配方式的信息； 和 /或所述第二基站按照第 一模式分配资源的资源位置；
第一配置单元， 所述第一配置单元用于将所述配置信息配置给所述用户设备。
7、 一种通信***， 包括第一基站、 第二基站和用户设备， 其中，
所述用户设备， 与第一基站断开连接后，在从所述用户设备接收到物理层失步指 示信息到接收到与所述用户设备重建连接的第二基站按照第一模式分配的第一资源 的第一期间，或者在从所述用户设备接收到触发所述用户设备切换到第二基站的配置 信息到接收到所述第二基站按照第一模式分配的第一资源的第二期间，或者在从所述 用户设备重建初始化到接收到与所述用户设备重建连接的第二基站按照第一模式分 配的第一资源的第三期间，或者在从所述用户设备发送重建请求到接收到与所述用户 设备重建连接的第二基站按照第一模式分配的第一资源的第四期间，所述用户设备从 第一基站或第二基站按照第二模式配置的资源池中选择进行设备对设备（D2D)通信 的资源。
8、 根据权利要求 7所述的通信***， 其中，
所述第一基站用于根据用户设备发送的测量结果向第二基站发送切换请求，所述 切换请求包括所述用户设备正在进行 D2D通信的信息、 和 /或所述用户设备所使用的 D2D 通信资源的分配模式和资源位置； 接收所述第二基站根据所述切换请求返回的 配置信息， 所述配置信息包括第二基站按照第二模式配置的资源池的时频位置； 和 / 或所述第二基站是否支持第一模式资源分配方式的信息； 和 /或所述第二基站按照第 一模式分配资源的资源位置。
9、 根据权利要求 8所述的通信***， 其中， 所述第一基站还用于； 将所述配置 信息配置给所述用户设备。
10、 根据权利要求 8所述的通信***， 其中，
所述第二基站用于接收所述第一基站发送的所述切换请求；向所述第一基站发送 所述配置信息。
11、根据权利要求 7所述的通信***， 其中， 在所述用户设备接收到所述第二基 站按照第二模式配置的资源池后， 从所述第二基站配置的资源池中选择进行 D2D通 信的资源； 在所述用户设备接收到所述第二基站按照第二模式配置的所述资源池前， 从所述第一基站按照第二模式配置的资源池中选择进行 D2D通信的资源。
12、 根据权利要求 7所述的通信***， 其中，
所述用户设备还用于在接收到所述第二基站按照第一模式分配的第一资源后，或 者在接收到所述第二基站指示用户设备使用所述第一资源的指示信息时，释放所述资 源池。
13、根据权利要求 7所述的通信***， 其中， 从所述用户设备接收到所述配置信 息开始， 在第一预定时间内未成功切换到所述第二基站时， 所述第二期间包括： 从超 过所述第一预定时间开始直至接收到所述第一资源的期间；
所述第一预定时间小于从所述用户设备接收到所述配置信息到成功连接到所述 第二基站的时间。
14、 根据权利要求 7所述的通信***， 其中， 从所述用户设备重建初始化开始， 在第二预定时间内未选择到合适的小区时，所述第三期间包括： 从超过所述第二预定 时间开始直至接收到所述第一资源的期间；
所述第二预定时间小于从重建初始化开始到选择到合适的小区的时间。
PCT/CN2014/077148 2014-05-09 2014-05-09 资源选择装置和通信*** WO2015168937A1 (zh)

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