WO2017041659A1 - Method and device for transmitting resource allocation information - Google Patents

Abstract

Provided are a method and device for transmitting resource allocation information. The method comprises: transmitting, by a source eNB, D2D related information to a target eNB; and receiving, by the source eNB, D2D resource allocation information from the target eNB, and informing a UE of the D2D resource allocation information. The target eNB arranges the D2D resource allocation information for the UE according to the D2D related information, thereby solving a problem in which a conventional technique is unable to ensure continuity of a D2D service when a UE switches between various scenarios in dual connectivity, and accordingly effectively ensuring continuity of a D2D service when a UE in dual connectivity switches between various scenarios.

Description

Resource configuration transmission method and device Technical field

The present invention relates to the field of communications, and in particular to a method and apparatus for transmitting a resource configuration.

Background technique

With the rapid development of wireless multimedia services, the demand for high data rates and user experience is increasing, which puts high demands on the system capacity and coverage of the traditional Long Term Evolution (LTE) cellular network. . In a conventional LTE cellular network, a macro base station (eNB) provides an access service for a user equipment (User Equipment, UE for short) as a unique access side network element. In order to meet the user's demand for higher data rates and improve the spectrum efficiency of the cellular network, operators deploy a large number of low-power nodes (Low Power Nodes, LPN for short) as a supplement to the macro base station when deploying the LTE cellular network. The UE provides an access service. On the other hand, the LPN is characterized by low-cost, low-power, and easy-to-deploy. It can include hotspot deployment and enhanced coverage. It can effectively improve the data rate of high-speed data services in indoor or outdoor hotspots and improve remote areas. Area or cell edge coverage. Generally, the LPN may also be referred to as a small base station, which may include, but is not limited to, a Home Base Station (Home eNB, abbreviated as HeNB), a Pico eNB, a Radio Remote Unit/Head (RRU/RRH), and a Relay Node ( Relay Node, referred to as RN). However, since the coverage of the small cell under the small base station is small, the probability of a handover failure occurs when the medium and high speed mobile UE passes through the small base station, thereby affecting UE service continuity. In order to improve the UE mobile performance after the introduction of the small cell, the industry proposes to ensure basic coverage by a certain base station (for example, a macro base station), and the UE always maintains a radio resource control (Radio Resource Control, RRC for short) connection with the base station, and small The cell serves only as a Transmission Point (TP) to provide a high data rate and meet the user's power saving requirements. FIG. 1 is a schematic diagram of a dual connectivity architecture according to the related art. As shown in FIG. 1 , in this system architecture, a UE maintains a connection with at least two base stations and uses radio resources under two base stations, so that radio resource aggregation across nodes can be implemented. This architecture is usually called a dual connectivity architecture. . The two base stations connected to the UE have a certain management control capability and are generally referred to as a primary eNB (referred to as a MeNB), and the other base station is referred to as a secondary eNB (SeNB).

For each UE, on the control plane, the MeNB can connect to the Mobility Management Entity (MME) through S1-C, and the MeNB and the SeNB can connect through X2-C. On the user side, for the MCG bearer, the MeNB can connect to the Serving Gateway (S-GW) through the S1-U, and the SeNB does not participate in the data transmission to the user plane. For the split bearer, the MeNB can connect to the S-GW through the S1-U and the MeNB can also connect to the SeNB through the X2-U. For the SCG bearer, the SeNB can connect to the S-GW through the S1-U, and the MeNB does not participate in the data transmission to the user plane.

The 3rd Generation Partnership Project (3GPP) discussed the SeNB Change scenario when discussing the Release 12 dual connectivity, that is, the UE is dual-connected to the MeNB and the S-SeNB before the handover, and is connected after the handover. In the MeNB and the T-SeNB; in addition, the scenario of MeNB to eNB change (ie, MeNB to eNB Change) is also discussed, that is, the UE is dual-connected to the S-MeNB and the S-SeNB before the handover, and after the handover, Single connection to the T-eNB. Currently, 3GPP In the discussion of the dual connectivity enhancement of Release 13, the scenario of inter-MeNB Handover without SeNB change is being discussed, that is, the UE is dual-connected to the S-MeNB and the SeNB before the handover, and after the handover, It is dual-connected between the T-MeNB and the SeNB; the scenario of adding a SeNB (Handover with SeNB addition) after the handover is discussed, that is, the UE is single-connected on the eNB before the handover, and the dual-connection is in the T-SeNB after the handover. The inter-MeNB inter-SeNB handover is also discussed, that is, the UE is dual-connected to the S-MeNB and the S-SeNB before the handover, and the dual-connection is between the T-MeNB and the T-SeNB after the handover. of.

Not only that, with the development of wireless multimedia services, people's demand for high data rates and user experience is increasing, which also puts high demands on the system capacity and coverage of traditional cellular networks. On the other hand, application scenarios such as public safety, social networking, close-range data sharing, and local advertising have led to an increasing demand for people and things to communicate with, and Proximity Services (ProSe). Traditional cell-based cellular networks have significant limitations in terms of high data rates and support for adjacent services. In this context, Device-to-Device, which stands for a new direction in the development of future communication technologies, is referred to as D2D) technology came into being. The application of D2D technology can reduce the load on the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and improve the robustness of the network infrastructure, which can well meet the requirements of the above high data rate services and proximity services.

The D2D technology can work in the licensed or unlicensed frequency band, and allows multiple D2D-enabled user equipments (D2D User Equipment, D2D UEs) to be deployed with or without network infrastructure. Direct discovery / direct communication. 2 is a schematic diagram of an application mode of a D2D technology according to the related art. As shown in FIG. 2, the application scenario of the D2D may include, but is not limited to, three types:

Scenario 1) UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG.

Scenario 2) UE relay transmission in the weak/uncovered area, as shown in mode 2 in FIG. 2, allows the UE4 with poor signal quality to communicate with the network through the UE3 with network coverage nearby, thereby enabling the operator to expand coverage, Increase capacity.

Scenario 3) In the event of an earthquake or emergency, the cellular network is not working properly, allowing direct communication between devices, as in Mode 3 of Figure 2, the control plane and user plane between UE5, UE6 and UE7 do not pass through the network infrastructure. And one or more hops of data communication.

The D2D technology may generally include a D2D discovery technology and a D2D communication technology, where the D2D discovery technology refers to a technique for determining/determining whether or not the UEs are adjacent. Under normal circumstances, D2D UEs can discover each other by sending or receiving discovery signals/information. D2D communication technology refers to a technology in which some or all of the communication data between D2D UEs can communicate directly without going through the network infrastructure.

For D2D discovery, two transmission resource allocation modes for D2D discovery are provided herein, which are: Type 1 (Type 1), and the transmission resource allocation of the D2D discovery is not based on a specific UE, and the transmission resource allocation is for all UEs. That is, the base station provides a transmission resource pool for D2D discovery, the D2D UE participating in the D2D discovery listens to the resource pool, and obtains the transmission resource of the D2D discovery through contention; Type 2 (Type 2), and the transmission resource allocation of the D2D discovery is based on a certain For a specific UE, the base station allocates a dedicated resource to the UE, that is, the base station allocates a suitable D2D discovered data transmission resource to the UE according to the request of the UE.

For D2D communication, the transmission resource allocation modes of the two D2D communication are also provided here, respectively: Mode 1 (Mode 1), the transmission resource allocation of the D2D communication is based on a specific UE, and the base station allocates a proprietary to the UE. Resources, that is, the UE requests transmission resources from the base station, the eNB schedules the transmission resources to be used as Scheduling Assignment (SA) and data transmission; Mode 2 (Mode 2), and the transmission resource allocation of the D2D communication is not based on the specific UE. The transmission resource allocation is for all UEs, that is, the base station provides a transmission resource pool for D2D communication, and the D2D UE participating in the D2D communication listens to the resource pool and acquires transmission resources of the D2D communication in a competitive manner.

In the D2D discovery, from the perspective of transmission, for the UE in the IDLE state, the base station may provide a Type 1 transmission resource pool in the system information module, and the UE that obtains the D2D discovery transmission authorization from the ProSe-based function ProSe may compete to acquire the D2D. Discovered transmission resources. In addition, the base station may indicate that the D2D is supported in the SIB, but does not provide any transmission resources, and the UE needs to enter the connection state to acquire the transmission resource of the D2D discovery. For the UE in the connected state, the UE that obtains the D2D discovery transmission authorization from the ProSe Function indicates that the base station wants to perform the D2D discovery transmission, and the base station performs the authorization verification on the D2D discovery transmission according to the UE context acquired from the MME, if the authorization verification succeeds. The base station configures the Type 1 transmission resource pool or the Type 2 transmission resource to the UE through dedicated signaling. If the authorization verification is unsuccessful, the base station does not configure the Type 1 transmission resource pool or the Type 2 transmission resource to the UE through dedicated signaling. In addition, from the perspective of reception, the base station can provide the received resources of the D2D discovery in the SIB.

In D2D communication, from the perspective of transmission, when the UE is outside the coverage, the SA resource pool used for transmission is pre-configured. When the UE is in the coverage, for the connected UE, the UE that obtains the D2D communication transmission authorization from the ProSe Function indicates that the base station wants to perform the D2D communication transmission, and the base station transmits the D2D communication according to the UE context acquired from the MME. If the authorization is successful, the base station configures the Mode2 transmission resource pool or the Mode 1 transmission resource to the UE through dedicated signaling. If the authorization verification is unsuccessful, the base station does not configure the Mode 2 transmission resource pool to the UE through dedicated signaling. Or Mode 1 transmits resources. For the UE in the IDLE state, the base station may provide a Mode 2 transmission resource pool in the SIB, and the UE that obtains the D2D communication transmission authorization from the ProSe Function may compete to acquire the transmission resource of the D2D communication. In addition, the base station may indicate that the D2D is supported in the SIB, and the UE needs to enter the connection state to acquire the transmission resource of the D2D communication. From the perspective of reception, when the UE is outside the coverage, the SA resource pool used for reception is pre-configured. When the UE is in coverage, the base station may provide an SA resource pool for D2D communication in the SIB or in dedicated signaling.

When discussing Release 12 D2D, 3GPP discussed that in order to ensure the continuity of D2D services, when the UE switches between macro base stations, the source eNB sends the UE to the source eNB for notifying the reception of D2D communication or discovery or No longer interested, or information in the SidelinkUEInformation message requesting to allocate or release D2D communication or discovery transmission resources and dedicated configuration information for D2D communication or discovery in X2 handover X2 handover request (HANDOVER REQUEST) message or S1 handover at S1 The target eNB is notified in the HANDOVER REQUIRED message and the HANDOVER REQUEST message.

However, the related art does not provide a solution for how to ensure the continuity of the D2D service of the UE in various handover scenarios of dual connectivity.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting a resource configuration, so as to solve at least the problem that the UE cannot ensure the continuity of the D2D service in the various handover scenarios of the dual connection in the related art.

According to an aspect of the present disclosure, a method for transmitting a resource configuration is provided, including:

The source base station sends the D2D related information to the target base station; the source base station receives the D2D resource configuration information from the target base station and notifies the D2D resource configuration information to the UE, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

Optionally, the source base station sends the D2D related information to the target base station, where the source MeNB notifies the target SeNB of the D2D related information of the source SeNB, and the source MeNB notifies the target eNB of the D2D related information of the source SeNB; The D2D related information of the SeNB is notified to the target MeNB; the source MeNB notifies the target SeNB of the D2D related information of the source MeNB; the source eNB notifies the target SeNB of the D2D related information of the source eNB.

Optionally, the source MeNB notifying the target SeNB of the D2D related information of the source SeNB includes: the source MeNB notifying the D2D related information of the source SeNB to the target SeNB in the SeNB addition request message; the source MeNB in the handover request message The D2D related information of the source SeNB is notified to the target MeNB, and the target MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB addition request message.

Optionally, the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB includes: the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB in the handover request message.

Optionally, before the source MeNB sends the request message to the target base station, the method further includes: the source MeNB acquiring and storing the D2D related information of the source SeNB.

Optionally, the source MeNB acquires and stores the D2D related information of the source SeNB, including one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the information in the Sidelink UEInformation is obtained by the source MeNB from the Sidelink UEInformation message sent by the UE.

Optionally, the source MeNB acquires and stores the D2D resource configuration information, where the source MeNB acquires and stores the D2D resource pool information of the source SeNB by using the D2D resource pool information of the source SeNB by the system information block SIB; The message acquires and stores the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB in the process of the UE requesting the D2D common resource pool and/or the D2D dedicated resource configuration.

Optionally, the source MeNB acquiring and storing the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB includes: when the source MeNB sends the SeNB add request message to the source SeNB to request the source SeNB to allocate the dual connectivity operation resource to the UE. The SeNB adds the request message carrying the information in the Sidelink UEInformation; the source MeNB receives the add request acknowledge message from the source SeNB, where the add request acknowledge message carries the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the active SeNB .

Optionally, when the source base station is the source MeNB or the source eNB, the source base station notifies the target SeNB of the D2D related information to the target SeNB. The source MeNB or the source eNB notifies the target MeNB of the D2D related information in the handover request message. The target MeNB notifies the target SeNB of the D2D related information of the source MeNB or the source eNB in the SeNB Add Request message.

Optionally, the D2D related information includes at least one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information of the UE includes at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status, where the D2D authorization information of the UE corresponds to one or more Public land mobile network PLMN.

Optionally, the information in the Sidelink UEInformation includes at least one of the following: the UE is interested in receiving the frequency of the D2D communication; the UE is interested in transmitting the frequency of the D2D communication; and the UE requests the network side to allocate the dedicated resource for the purpose of the D2D communication transmission, where The destination is identified by the group ID of the D2D layer 2; the UE is interested in listening to the D2D discovery; the UE needs to transmit the number of resources for D2D discovery in each transmission period.

Optionally, the D2D resource configuration information includes at least one of the following: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated. The resource pool configuration information is a specific resource indicated by a time-frequency resource index; D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information, D2D communication The dedicated resource configuration information includes at least one of the following information: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status reporting timer.

Optionally, the source base station receives the resource configuration information from the target base station and notifies the UE to the D2D resource configuration information, where the source MeNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information. The source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the D2D resource configuration information to the UE; the source MeNB receives the D2D resource configuration information allocated by the target MeNB, and notifies the UE of the D2D resource configuration information; the source MeNB receives the target eNB. The allocated D2D resource configuration information is notified to the UE by the D2D resource configuration information.

Optionally, the source MeNB or the source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information to include one of the following: the source MeNB or the source eNB receives the target MeNB sent by the target MeNB in the handover request acknowledgement message. And the D2D resource configuration information is sent to the UE, where the MeNB sends the D2D resource configuration information from the target SeNB to send the SeNB addition request acknowledgement message; the source MeNB receives the target SeNB in the SeNB add request acknowledgement message. The allocated D2D resource configuration information is notified to the UE by the D2D resource configuration information.

Optionally, the source MeNB receives the D2D resource configuration information allocated by the target eNB or the target MeNB, and notifies the D2D resource configuration information to the UE, where the source MeNB receives the D2D resource configuration information that is allocated by the target eNB or the target MeNB in the handover request acknowledgement message. And notifying the UE of the D2D resource configuration information.

Optionally, the source base station notifies the UE of the D2D resource configuration information, including one of the following: the source MeNB will target the SeNB. The allocated D2D resource configuration information is notified to the UE in the RRC connection reconfiguration message; the source MeNB notifies the D2D resource configuration information allocated by the target eNB to the UE in the RRC connection reconfiguration message; the source MeNB allocates the D2D resource configuration information of the target MeNB. Notifying the UE in the RRC connection reconfiguration message; the source eNB notifying the UE of the D2D resource configuration information allocated by the target SeNB in the RRC connection reconfiguration message.

Optionally, the D2D resource configuration information includes at least one of the following information: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D communication. The resource configuration information, wherein the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information.

According to another aspect of the embodiments of the present invention, another method for transmitting a resource configuration is provided, including:

The target base station receives device-to-device D2D related information from the source base station; the target base station returns D2D resource configuration information to the source base station, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

According to still another aspect of the embodiments of the present invention, a resource configuration transmission apparatus is provided, including:

a sending module, configured to send D2D related information to the target base station; the transmitting module is configured to receive D2D resource configuration information from the target base station, and notify the UE of the D2D resource configuration information, where the D2D resource configuration information is the target base station according to the D2D correlation Information is assigned to the UE.

Optionally, the sending module is configured to send the D2D related information to the target base station, where the method includes: notifying the D2D related information of the source secondary base station SeNB to the target SeNB; and notifying the D2D related information of the source SeNB to the target macro base station eNB. Transmitting the D2D related information of the source SeNB to the target MeNB; notifying the D2D related information of the source MeNB to the target SeNB; the source eNB notifying the target SeNB of the D2D related information of the source eNB.

Optionally, the sending module is configured to notify the target SeNB of the D2D related information of the source SeNB in the SeNB addition request message, or notify the target MeNB and the target MeNB of the target MeNB in the SeNB in the handover request message. The D2D related information of the source SeNB is notified to the target SeNB in the add request message.

Optionally, the sending module is configured to notify the target eNB or the target MeNB of the D2D related information of the source SeNB in the handover request message.

Optionally, the foregoing apparatus further includes: a processing module, configured to acquire and store D2D related information of the source SeNB.

Optionally, the processing module, the D2D related information that is set to be acquired and stored includes one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the information in the Sidelink UEInformation is obtained by the source MeNB from the Sidelink UEInformation message sent by the UE.

Optionally, the processing module is configured to acquire and store the D2D resource pool information of the source SeNB by using the D2D resource pool information of the source SeNB of the system information block SIB; or, the source MeNB requests the D2D common resource pool for the UE by using a dedicated message. The D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB is acquired and stored in the process of D2D dedicated resource configuration.

Optionally, the processing module is configured to: when sending the SeNB Add Request message to the source SeNB to request the source SeNB to allocate the dual connectivity operation resource to the UE, carry the information in the Sidelink UEInformation in the SeNB Add Request message, and receive the information from the source SeNB. The add request acknowledgement message, wherein the add request acknowledgement message carries the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the active SeNB.

Optionally, the sending module is configured to notify the target MeNB of the D2D related information in the handover request message, so that the target MeNB notifies the target SeNB of the D2D related information of the source MeNB or the source eNB in the SeNB addition request message.

Optionally, the D2D related information includes at least one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information of the UE includes at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status, where the D2D authorization information of the UE corresponds to one or more PLMN.

Optionally, the information in the Sidelink UEInformation includes at least one of the following: the UE is interested in receiving the frequency of the D2D communication; the UE is interested in transmitting the frequency of the D2D communication; and the UE requests the network side to allocate the dedicated resource for the purpose of the D2D communication transmission, where The destination is identified by the group ID of the D2D layer 2; the UE is interested in listening to the D2D discovery; the UE needs to transmit the number of resources for D2D discovery in each transmission period.

Optionally, the D2D resource configuration information includes at least one of the following: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated. The resource pool configuration information is a specific resource indicated by a time-frequency resource index; D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information, D2D communication The dedicated resource configuration information includes at least one of the following information: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status reporting timer.

Optionally, the transmitting module is configured to receive the D2D resource configuration information from the target base station and notify the UE of the D2D resource configuration information according to one of the following manners: receive the D2D resource configuration information allocated by the target SeNB, and set the D2D resource configuration information. Notifying the UE; receiving the D2D resource configuration information allocated by the target MeNB, and notifying the D2D resource configuration information to the UE; receiving the D2D resource configuration information allocated by the target eNB, and notifying the UE of the D2D resource configuration information.

Optionally, the transmitting module is configured to receive the D2D resource configuration information that is sent by the target SeNB and is sent by the target SeNB in the handover request acknowledgement message, and notify the UE of the D2D resource configuration information, where the MeNB sends the SeNB add request from the target SeNB. The D2D resource configuration information is obtained in the confirmation message; or the receiving target SeNB adds the D2D resource configuration information allocated in the request acknowledgement message to the SeNB, and notifies the UE of the D2D resource configuration information.

Optionally, the transmitting module is configured to receive the D2D resource configuration information allocated by the target eNB or the target MeNB in the handover request acknowledgement message, and notify the UE of the D2D resource configuration information.

Optionally, the transmitting module is configured to notify the UE of the D2D resource configuration information by using one of the following manners: notifying the D2D resource configuration information allocated by the target SeNB to the UE in the RRC connection reconfiguration message; The allocated D2D resource configuration information is notified to the UE in the RRC connection reconfiguration message; the D2D resource configuration information allocated by the target MeNB is notified to the UE in the RRC connection reconfiguration message.

Optionally, the D2D resource configuration information includes at least one of the following information: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D communication. The resource configuration information, wherein the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information.

According to still another aspect of the embodiments of the present invention, there is provided another resource configuration transmission apparatus, including: a receiving module, configured to receive device-to-device D2D related information from a source base station; and a feedback module configured to return to the source base station D2D resource configuration information, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is arranged to store program code for performing the following steps:

Transmitting D2D related information to the target base station; receiving D2D resource configuration information from the target base station, and notifying the D2D resource configuration information to the UE, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

The source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB includes: the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB in the handover request message.

Before the source MeNB sends the request message to the target base station, the method further includes: the source MeNB acquiring and storing the D2D related information of the source SeNB.

When the source base station is the source MeNB or the source eNB, the source base station notifies the target SeNB of its own D2D related information, including: the source MeNB or the source eNB notifies the target MeNB of its own D2D related information in the handover request message; the target MeNB is in the SeNB. The D2D related information of the source MeNB or the source eNB is notified to the target SeNB in the add request message.

According to the embodiment of the present invention, the source base station sends the D2D related information to the target base station; the source base station receives the D2D resource configuration information from the target base station, and notifies the D2D resource configuration information to the UE, where the D2D resource configuration information is the target base station according to the D2D. The related information is allocated to the UE, which solves the problem that the UE cannot ensure the continuity of the D2D service in the various handover scenarios of the dual connection in the related art, and can effectively ensure that the UE maintains the D2D in the dual connection switching scenarios. Business continuity.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a dual connectivity architecture according to the related art;

2 is a schematic diagram of an application mode of a D2D technology according to the related art;

3 is a flowchart of a method for transmitting a resource configuration according to an embodiment of the present invention;

4 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention;

FIG. 5 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention; FIG.

6 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention;

7 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment 4 of the present invention;

8 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment 5 of the present invention;

9 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention;

FIG. 10 is a flowchart of another method for transmitting a resource configuration according to an embodiment of the present invention; FIG.

11 is a structural block diagram of a transmission apparatus for resource configuration according to an embodiment of the present invention;

FIG. 12 is a structural block diagram of a transmission apparatus for resource allocation according to a preferred embodiment of the present invention; FIG.

FIG. 13 is a structural block diagram of another resource configuration transmission apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for transmitting a resource configuration is provided. FIG. 3 is a flowchart of a method for transmitting a resource configuration according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S302, the source base station sends D2D related information to the target base station;

Step S304: The source base station receives the D2D resource configuration information from the target base station and notifies the D2D resource configuration information to the UE, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

Through the above steps, the source base station is used to send D2D related information to the target base station, where the D2D related information is used for The target base station allocates resources of the dual connectivity operation of the UE; the source base station receives the D2D resource configuration information from the target base station, and notifies the D2D resource configuration information to the UE, where the D2D resource configuration information is that the target base station allocates the UE according to the D2D related information. The problem that the UE cannot maintain the continuity of the D2D service in the various handover scenarios of the dual connection in the related art is solved, and the UE can effectively ensure the continuity of the D2D service in the various handover scenarios of the dual connection.

In a preferred implementation process, the foregoing D2D related information may include, but is not limited to, at least one of the following:

(1) D2D authorization information of the UE;

Optionally, the D2D authorization information of the UE includes at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status, where the D2D authorization information of the UE corresponds to one or more Public Land Mobile Network (PLMN).

(2) Information in SidelinkUEInformation;

Optionally, the information in the Sidelink UEInformation includes at least one of the following: the UE is interested in receiving the frequency of the D2D communication; the UE is interested in transmitting the frequency of the D2D communication; and the UE requests the network side to allocate the dedicated resource for the purpose of the D2D communication transmission, where The destination is identified by the group ID of the D2D layer 2; the UE is interested in listening to the D2D discovery; the UE needs to transmit the number of resources for D2D discovery in each transmission period.

(3) D2D resource configuration information. The D2D resource configuration information is transmitted from the source base station side to the target base station.

Optionally, the D2D resource configuration information includes at least one of the following: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated. The resource pool configuration information is a specific resource indicated by a time-frequency resource index; D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information, D2D communication The dedicated resource configuration information includes at least one of the following information: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status reporting timer.

In a preferred implementation process, the D2D resource configuration information returned by the target base station to the source base station may include at least one of the following information:

(1) D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information;

(2) D2D communication resource configuration information, wherein the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information.

Optionally, in step S302, the sending, by the source base station, the D2D related information to the target base station may include, but is not limited to, one of the following manners:

Mode 1, the source MeNB notifies the D2D related information of the source SeNB to the target SeNB;

Mode 2: The source MeNB notifies the target eNB of the D2D related information of the source SeNB;

Mode 3: The source MeNB notifies the target MeNB of the D2D related information of the source SeNB;

Mode 4: The source MeNB notifies the target SeNB of the D2D related information of the source MeNB;

In a mode 5, the source eNB notifies the target SeNB of the D2D related information of the source eNB.

Optionally, in the foregoing manner 1, the source MeNB notifying the target SeNB of the D2D related information of the source SeNB may further include, but is not limited to, one of the following manners:

Mode 1.1: The source MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB Add Request message;

In the mode 1.2, the source MeNB notifies the target MeNB of the D2D related information of the source SeNB in the handover request message, and the target MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB addition request message.

Optionally, in mode 2 or mode 3, the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB may include but is not limited to one of the following:

In the mode 2.1, the source MeNB notifies the target eNB of the D2D related information of the source SeNB in the handover request message.

Mode 3.1: The source MeNB notifies the target MeNB of the D2D related information of the source SeNB in the handover request message.

Optionally, before the source MeNB sends the request message to the target base station, the method may further include the following steps:

Step S1: The source MeNB acquires and stores D2D related information of the source SeNB.

In a preferred implementation process, the source MeNB acquires and stores the D2D related information of the source SeNB, which may include, but is not limited to, one of the following: D2D authorization information of the UE, information in the Sidelink UEInformation, and D2D resource configuration information, where the information in the Sidelink UEInformation is the source. The MeNB is obtained from the Sidelink UEInformation message sent by the UE.

Optionally, in step S1, the source MeNB acquiring and storing the D2D resource configuration information of the source SeNB may include, but is not limited to, one of the following:

The source MeNB acquires and stores the D2D resource pool information of the source SeNB by using the D2D resource pool information of the source SeNB by the system information block SIB.

Mode 2: The source MeNB acquires and stores the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB in the process of requesting the D2D common resource pool and/or the D2D dedicated resource configuration by the UE through a dedicated message.

Optionally, in mode 2, the source MeNB acquiring and storing the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB may include the following operations:

Step S2: When the source MeNB sends an SeNB Add Request message to the source SeNB to request the source SeNB to allocate the dual connectivity operation resource to the UE, the SeNB adds the request message carrying the information in the Sidelink UEInformation.

Step S3: The source MeNB receives an add request acknowledgement message from the source SeNB, where the add request acknowledgement message carries the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the active SeNB.

Optionally, in step S302, when the source base station is the source MeNB or the source eNB, the source base station associates its own D2D. The information notification to the target SeNB may include, but is not limited to, one of the following ways:

Mode 1, the source MeNB or the source eNB notifies the target MeNB of its own D2D related information in the handover request message;

In the mode 2, the target MeNB notifies the target SeNB of the D2D related information of the source MeNB or the source eNB in the SeNB addition request message.

Optionally, in step S304, the source base station receiving the resource configuration information from the target base station and notifying the UE to the D2D resource configuration information may include, but is not limited to, one of the following manners:

Mode 1, the source MeNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information;

Mode 2: The source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information.

Mode 3: The source MeNB receives the D2D resource configuration information allocated by the target MeNB, and notifies the UE of the D2D resource configuration information.

Manner 4: The source MeNB receives the D2D resource configuration information allocated by the target eNB, and notifies the UE of the D2D resource configuration information.

As a preferred embodiment of the present invention, in the foregoing mode 1, the source MeNB receives the D2D resource configuration information allocated by the target SeNB in the SeNB addition request acknowledgement message, and notifies the UE of the D2D resource configuration information. In the foregoing mode 3, the source MeNB receives the D2D resource configuration information allocated by the target SeNB in the handover request acknowledgement message, and notifies the D2D resource configuration information to the UE, where the MeNB sends the SeNB addition request acknowledgement from the target SeNB. Obtain D2D resource configuration information in the message. In the foregoing mode 4, the source eNB receives the D2D resource configuration information allocated by the target MeNB in the handover request acknowledgement message, and notifies the UE of the D2D resource configuration information, where the MeNB obtains the D2D resource from the target SeNB by sending the SeNB addition request acknowledgement message. Configuration information. Optionally, in the foregoing mode 3 or mode 4, the source MeNB receives the D2D resource configuration information allocated by the target eNB or the target MeNB in the handover request acknowledgement message, and notifies the UE of the D2D resource configuration information.

Optionally, in step S304, the source base station notifying the UE of the D2D resource configuration information may include, but is not limited to, one of the following manners:

The mode 1, the source MeNB notifies the D2D resource configuration information allocated by the target SeNB to the UE in the RRC connection reconfiguration message;

The mode 2, the source MeNB notifies the D2D resource configuration information allocated by the target eNB to the UE in the RRC connection reconfiguration message;

Mode 3: The source MeNB notifies the UE of the D2D resource configuration information allocated by the target MeNB in the RRC connection reconfiguration message;

Mode 4: The source eNB notifies the D2D resource configuration information allocated by the target SeNB in the RRC connection reconfiguration message. UE.

The above preferred embodiments will be further described in detail below in conjunction with the following preferred embodiments.

Preferred embodiment 1

FIG. 4 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention. As shown in FIG. 4, the preferred embodiment is in the scenario where the SeNB changes in the dual connectivity, assuming that both the S-SeNB and the T-SeNB support the D2D capability.

Step S402: The MeNB sends a SeNB Add Request (SENB ADDITION REQUEST) message to the T-SeNB to request the T-SeNB to allocate resources of the dual connectivity operation of the UE, thereby initializing the process of the SeNB change. The MeNB may carry the D2D related information allocated by the S-SeNB in the SeNB Add Request message, where the D2D related information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the foregoing D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status; the foregoing authorization information may correspond to one or Multiple PLMNs.

Optionally, the information in the above Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requests the network side to allocate the dedicated resource to perform the D2D communication. The purpose of the transmission (the purpose may be the ID of the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested to monitor the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

The D2D resource configuration information may include, but is not limited to, at least one of the following information: The D2D discovery dedicated resource configuration information, the D2D discovery resource pool information, the D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index; the D2D communication resource configuration information may include but is not limited to at least one of the following information: D2D communication Dedicated resource configuration information, D2D communication resource pool information, wherein the D2D communication dedicated resource configuration information may further include, but is not limited to, at least one of the following: a D2D cell radio network temporary identification, modulation and coding scheme (Modulation and Coding Scheme, referred to as MCS), Buffer Status Reporting (BSR) timer.

Before handover, the UE is dual-connected to the MeNB and the S-SeNB. The MeNB may broadcast the D2D resource pool information of the S-SeNB through the SIB: for the D2D discovery, the MeNB may broadcast the D2D discovery resource pool information of the Type 1 of the S-SeNB to the UE through the SIB19; for the D2D communication, the MeNB may broadcast the S-SeNB through the SIB18. The Mode 2 D2D communication resource pool information is given to the UE. Of course, the MeNB may also request the D2D common resource pool (ie, the Type 1 resource pool or the Mode 2 resource pool) and/or the D2D dedicated resource configuration (that is, the Type 2B resource configuration or the Mode 1 resource configuration) for the UE by using the dedicated message: the UE sends the Sidelink UEInformation. The information is sent to the MeNB, and then the MeNB retransmits the SeNB Add Request message to the S-SeNB to request the S-SeNB to allocate the resources of the dual connectivity operation to the UE, and may carry the information in the Sidelink UEInformation sent by the UE in the SeNB Add Request message; The SeNB may allocate the D2D common resource pool and/or D2D allocated by the S-SeNB in the SeNB Add Request Acknowledgement (SENB ADDITION REQUEST ACKNOWLEDGE) message. The dedicated resource configuration notification is sent to the MeNB. After receiving the information, the MeNB may notify the UE of the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the S-SeNB in the RRC Connection Reconfiguration (RRCConnectionReconfiguration) message. Regardless of which of the above methods, the MeNB can know and store the allocated D2D common resource pool and/or D2D dedicated resource configuration of the S-SeNB. Regarding the D2D authorization information of the UE, the MeNB can obtain the D2D authorization information of the UE in an existing manner, for example, the MeNB uses the initial context establishment request (INITIAL CONTEXT SETUP REQUEST) and the UE context modification request (UE CONTEXT MODIFICATION REQUEST) message. The MME obtains the D2D authorization information of the UE, and in the handover process, for the S1 handover, the target base station (ie, the MeNB) can obtain the D2D authorization information of the UE by using an S1 handover request (S1HANDOVER REQUEST) message; for the X2 handover, the target base station (ie, The MeNB) acquires the D2D authorization information of the UE through an X2HANDOVER REQUEST message and a PATH SWITCH REQUEST ACKNOWLEDGE message. In summary, the MeNB is D2D related information that can exist in the S-SeNB.

Of course, the MeNB may also obtain at least one of the following D2D related information of the S-SeNB in the SeNB addition request acknowledgement message in the SeNB addition preparation process performed between the SeNB and the S-SeNB: D2D authorization information, Sidelink UEInformation information, and D2D resources. Configuration information.

Step S404: The T-SeNB replies to the SeNB Add Request Acknowledgement message to the MeNB, where the SeNB adds the request acknowledgement message carrying the D2D resource configuration information allocated by the T-SeNB.

In a preferred implementation, the D2D resource configuration information may include, but is not limited to, at least one of the following: D2D discovery resource configuration information, D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information. : D2D discovers dedicated resource configuration information and D2D discovery resource pool information. The D2D communication resource configuration information may include, but is not limited to, one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information.

Step S406: The MeNB initially releases the resource, receives the SeNB release request (SENB RELEASE REQUEST) message, and the SeNB stops providing the user data to the UE.

Step S408: The MeNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message may carry the D2D resource configuration information allocated by the T-SeNB carried in the SeNB Add Request Acknowledgement message mentioned in the foregoing step.

Step S410: The UE returns an RRC Connection Reconfiguration Complete (RRCConnectionReconfigurationComplete) message to the MeNB.

Step S412: When the requested configuration has been successfully applied to the UE, the MeNB sends a SeNB RECONFIGURATION COMPLETION message to notify the T-SeNB.

Step S414: The UE synchronizes to the T-SeNB.

Steps S416-S418: The S-SeNB sends a SN STATUS TRANSFER message to the MeNB. The MeNB forwards the SN Status Transfer message to the T-SeNB. Data pre-transmission from the S-SeNB occurs.

Steps S420-S428: The MeNB triggers an E-RAB modification indication procedure to trigger a path update from the S-SeNB to the T-SeNB.

Step S430: The MeNB sends a UE CONTEXT RELEASE message to the S-SeNB, instructing the S-SeNB to release the UE context-related radio and control plane resources.

Preferred embodiment two

The preferred embodiment is related to the MeNB to eNB change in the dual connectivity, the inter-MeNB handover SeNB unchanged, and the inter-MeNB inter-SeNB handover scenario, assuming that the SeNB is capable of supporting D2D capability. In the three scenarios, the source base station carries the SCG configuration information of the active SeNB in the handover request message sent to the target base station, and may also carry the D2D related information of the source SeNB. The D2D related information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information. Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs. The information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource for the D2D communication transmission. It may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit D2D discovery in each transmission period. The D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, and D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery dedicated resource configuration. Information, D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D communication resource configuration information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. Optionally, the D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

The target base station decides whether to continue the dual connectivity operation, and if the dual connectivity operation is decided, whether the SeNB needs to change. If the target base station decides not to continue the dual connectivity operation, it is a scenario in which the MeNB to the eNB changes in the dual connectivity. If the target base station decides to continue the dual connectivity operation and the SeNB does not change, it is a scenario in which the inter-MeNB switches the SeNB unchanged in the dual connectivity. If the target base station decides to continue the dual connectivity operation and the SeNB changes, it is the inter-MeNB inter-SeNB handover scenario in the dual connectivity. FIG. 5 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention. As shown in FIG. 5, the preferred embodiment relates to an inter-MeNB inter-SeNB handover scenario in a dual connectivity, and the process may include the following processing steps:

Step S502: The S-MeNB sends a handover request T-MeNB, and transmits necessary information to prepare for handover to the target side. The handover request message carries the SCG configuration information of the S-SeNB, and may also carry the D2D related information of the S-SeNB. The D2D related information includes, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs.

Optionally, the information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource to perform the D2D communication transmission. The purpose (the purpose may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

Optionally, the D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D Discover dedicated resource configuration information and D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D communication resource configuration information may include, but is not limited to, one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. Optionally, the D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

Before handover, the UE is dual-connected to the S-MeNB and the S-SeNB. The S-MeNB may broadcast the D2D resource pool information of the S-SeNB through the SIB: for the D2D discovery, the S-MeNB may broadcast the D2D discovery resource pool information of the Type 1 of the S-SeNB to the UE through the SIB19; for the D2D communication, the S-MeNB may The D2D communication resource pool information of Mode 2 of the S-SeNB is broadcast to the UE through the SIB 18. Of course, the S-MeNB may also request the D2D common resource pool (ie, the Type 1 resource pool or the Mode 2 resource pool) and/or the D2D dedicated resource configuration (ie, Type 2B resource configuration or Mode 1 resource configuration) for the UE through a dedicated message: the UE sends The Sidelink UEInformation message is sent to the S-MeNB, and the S-MeNB retransmits the SeNB Add Request message to the S-SeNB to request the S-SeNB to allocate the dual-connection operation resource to the UE, and may carry the SeNB Add Request message in the Sidelink UEInformation sent by the UE. The S-SeNB may notify the S-MeNB of the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the S-SeNB in the SeNB Add Request Acknowledgement message, and the S-MeNB may connect in the RRC after receiving the information. The D2D common resource pool and/or the D2D dedicated resource configuration allocated by the S-SeNB is notified to the UE in the reconfiguration message. Regardless of which of the above, the S-MeNB is configured to store and store the allocated D2D common resource pool and/or D2D dedicated resource configuration of the S-SeNB. Regarding the D2D authorization information of the UE, the D2D authorization information of the UE can be obtained by the existing method at the S-MeNB. For example, the S-MeNB may acquire the D2D authorization information of the UE from the MME by using the initial context setup request and the UE context modification request message. Meanwhile, in the handover process, for the S1 handover, the target base station (ie, the S-MeNB) may perform the handover request through the S1. The message acquires the D2D authorization information of the UE. For the X2 handover, the target base station (ie, the S-MeNB) can obtain the D2D authorization information of the UE by using the X2 handover request message and the S1 path conversion request acknowledgement message. In summary, the S-MeNB is D2D-related information that can exist in the S-SeNB.

Of course, the S-MeNB may also acquire at least one of the following D2D related information of the S-SeNB in the SeNB addition request acknowledgement message in the SeNB addition preparation process of the S-SeNB: D2D authorization information, Sidelink UEInformation information, and D2D resource configuration information. .

Step S504: The T-MeNB decides to continue the dual connectivity operation, and decides to change the SeNB. The T-MeNB sends an SeNB Add Request message to the T-SeNB to request the T-SeNB to allocate resources of the dual connectivity operation of the UE. The SeNB addition request message carries the D2D related information of the S-SeNB carried in the handover request message mentioned in the foregoing step.

Step S506: The T-SeNB returns a SeNB Add Request Acknowledgement message to the T-MeNB. The SeNB adds a request acknowledgement message carrying D2D resource configuration information allocated by the T-SeNB;

In a preferred implementation, the D2D resource configuration information may include, but is not limited to, at least one of the information: D2D discovery resource configuration information, and D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information and D2D communication resource pool information.

Step S508: The T-MeNB returns a handover request acknowledgement message to the S-MeNB. The handover request acknowledgement message carries the SCG configuration information of the T-SeNB, and may also carry the D2D resource configuration information allocated by the T-SeNB carried in the SeNB addition request acknowledgement message mentioned in the foregoing step.

Step S510: The S-MeNB sends an SeNB release request message to the S-SeNB to release the initial resource. Upon receiving the SeNB release request message, the S-SeNB stops providing user data to the UE.

Step S512: The S-MeNB sends an RRC connection reconfiguration message to the UE. The RRC connection reconfiguration message carries the D2D resource configuration information allocated by the T-SeNB carried in the handover request acknowledgement message mentioned in the foregoing step.

Steps S514-S516: The UE synchronizes to the T-MeNB and returns an RRC Connection Reconfiguration Complete message to the T-MeNB.

Step S518: The UE synchronizes to the T-SeNB.

Step S520: When the requested configuration has been successfully applied to the UE, the T-MeNB sends an SeNB reconfiguration complete message to notify the T-SeNB.

Steps S522-S524: The S-SeNB sends an SN status transmission message to the S-MeNB, and the S-MeNB forwards the SN status transmission message to the T-MeNB, and the T-MeNB forwards the SN status transmission message to the T-SeNB. Data pre-transmission from the S-SeNB occurs.

Steps S526-S532: The T-MeNB initials an S1 path switching request procedure to trigger a path update.

Step S534: The T-MeNB sends a UE context release request message to the S-MeNB, instructing the S-MeNB to release the UE context-related radio and control plane resources.

Step S536: The S-MeNB sends a UE context release message to the S-SeNB, instructing the S-SeNB to release the UE context-related radio and control plane resources.

Preferred embodiment three

FIG. 6 is a schematic flowchart of maintaining continuity of a D2D service in various handover scenarios of dual connectivity according to a preferred embodiment 3 of the present invention. As shown in FIG. 6, the preferred embodiment is to add a SeNB scenario after handover in dual connectivity, assuming that the eNB and the T-SeNB are capable of supporting D2D. The process can include the following steps:

Step S602: The eNB sends a handover request (HANDOVER REQUEST) message to the T-MeNB, and transmits necessary information to prepare for handover to the target side. The handover request message carries measurement report information for the neighboring cell.

The eNB carries the D2D related information of the eNB in the handover request message sent to the T-MeNB. D2D related letter The information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs.

Optionally, the information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource to perform the D2D communication transmission. The purpose (the purpose may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

Optionally, the D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D Discover dedicated resource configuration information and D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D communication resource configuration information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. The D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

Step S604: Once the T-MeNB decides to add the T-SeNB to perform the dual connectivity operation, the T-MeNB sends a SeNB Add Request message to the T-SeNB, where the SeNB Add Request message carries the handover request message mentioned in the foregoing step. D2D related information of the eNB carried in.

Step S606: The T-SeNB replies to the SeNB Add Request Acknowledgement message to the T-MeNB, where the SeNB adds the request acknowledgement message carrying the D2D resource configuration information allocated by the T-SeNB.

The D2D resource configuration information includes, but is not limited to, one of the following information: D2D discovery resource configuration information, and D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery dedicated resource configuration. Information, D2D discovery resource pool information. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information.

Step S608: The T-MeNB returns a handover request acknowledgement (HANDOVER REQUEST ACKNOWLEDGE) message to the eNB, where the handover request acknowledgement message may carry not only the SCG configuration information of the T-SeNB but also the SeNB addition request mentioned in the foregoing step. Confirming the D2D resource configuration information allocated by the T-SeNB carried in the message.

Step S610: The eNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the D2D resource configuration information allocated by the T-SeNB carried in the handover request acknowledgement message mentioned in the foregoing step.

Steps S612-S614: The UE synchronizes to the T-MeNB and returns an RRC Connection Reconfiguration Complete message to the T-MeNB.

Step S616: The UE synchronizes to the T-SeNB.

Step S618: When the requested configuration has been successfully applied to the UE, the T-MeNB sends a SeNB reconfiguration complete message. Notify the T-SeNB.

Steps S620-S622: The eNB sends an SN status transmission message to the T-MeNB. Data pre-transmission from the eNB occurs.

Steps S624-S630: The T-MeNB initials an S1 path switching request procedure to trigger a path update.

Step S632: The T-MeNB sends a UE context release message to the eNB, instructing the eNB to release the UE context-related radio and control plane resources.

Preferred embodiment four

FIG. 7 is a flow chart showing the continuity of maintaining D2D services in various handover scenarios of dual connectivity according to a preferred embodiment 4 of the present invention. As shown in FIG. 7, the preferred embodiment is in the scenario where the MeNB to the eNB changes in the dual connectivity, assuming that the S-SeNB and the T-eNB are D2D capable.

Step S702: The S-MeNB sends a handover request message to the T-eNB, and transmits necessary information to prepare handover to the target side, where the handover request message carries D2D related information of the S-SeNB. The D2D related information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs.

Optionally, the information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource to perform the D2D communication transmission. The purpose (the purpose may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

Optionally, the D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D Discover dedicated resource configuration information and D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. The D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

Before handover, the UE is dual-connected to the S-MeNB and the S-SeNB. The S-MeNB may broadcast the D2D resource pool information of the S-SeNB through the SIB: for the D2D discovery, the S-MeNB may broadcast the D2D discovery resource pool information of the Type 1 of the S-SeNB to the UE through the SIB19; for the D2D communication, the S-MeNB may The D2D communication resource pool information of Mode 2 of the S-SeNB is broadcast to the UE through the SIB 18. The S-MeNB may also request the D2D common resource pool (ie, the Type 1 resource pool or the Mode 2 resource pool) and the D2D dedicated resource configuration (that is, the Type 2B resource configuration or Mode 1) for the UE through the dedicated message. Resource configuration): The UE sends a Sidelink UEInformation message to the S-MeNB, and the S-MeNB sends the SeNB Add Request message to the S-SeNB to request the S-SeNB to allocate the dual-connection operation resource to the UE. The information in the Sidelink UEInformation sent by the UE; the S-SeNB may notify the S-MeNB of the D2D common resource pool and the D2D dedicated resource configuration allocated by the S-SeNB in the SeNB Add Request Acknowledgement message, and the S-MeNB receives the information. The D2D common resource pool and the D2D dedicated resource configuration allocated by the S-SeNB may be notified to the UE in the RRC connection reconfiguration message. Regardless of which of the above, the S-MeNB is configured to store and store the allocated D2D common resource pool and or D2D dedicated resource configuration of the S-SeNB. Regarding the D2D authorization information of the UE, the D2D authorization information of the UE can be obtained by the existing method at the S-MeNB. For example, the S-MeNB acquires the D2D authorization information of the UE from the MME by using the initial context setup request and the UE context modification request message. Meanwhile, in the handover process, the target base station (ie, the S-MeNB) obtains the S1 handover request message through the S1 handover request message. The D2D authorization information of the UE, for the X2 handover, the target base station (ie, the S-MeNB) acquires the D2D authorization information of the UE by using an X2 handover request message and an S1 path conversion request acknowledgement message. In summary, the S-MeNB may have D2D related information of the S-SeNB.

Of course, the S-MeNB may also obtain at least one of the following D2D-related information of the S-SeNB in the SeNB Add Request Acknowledgement message in the SeNB addition preparation process between the S-SeNB and the S-SeNB: D2D authorization information, information in the Sidelink UEInformation, and D2D resource configuration information.

Step S704: The T-eNB returns a handover request acknowledgement message to the S-MeNB, where the handover request acknowledgement message carries the D2D resource configuration information allocated by the T-eNB.

The D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, and D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: Resource configuration information, D2D discovery resource pool information. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information.

Step S706: The S-MeNB sends an SeNB release request message to the S-SeNB to release the initial resource. Upon receiving the SeNB release request message, the S-SeNB stops providing user data to the UE.

Step S708: The eNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the D2D resource configuration information of the T-eNB configuration carried in the handover request acknowledgement message mentioned in the foregoing step.

Steps S710-S712: The UE synchronizes to the T-eNB and returns an RRC Connection Reconfiguration Complete message to the T-eNB.

Steps S714-S716: The S-SeNB sends an SN status transmission message to the S-MeNB, and the S-MeNB forwards the message to the T-eNB. Data pre-transmission from the S-SeNB occurs.

Steps S718-S726: The T-eNB initials an S1 path switching request procedure to trigger a path update.

Step S728: The T-eNB sends a UE context release message to the S-MeNB, instructing the S-MeNB to release the UE context-related radio and control plane resources.

Step S730: The S-MeNB sends a UE context release message to the S-SeNB, instructing the S-SeNB to release the UE context-related radio and control plane resources.

Preferred embodiment five

FIG. 8 is a flow chart showing the continuity of maintaining D2D services in various handover scenarios of dual connectivity according to a preferred embodiment 5 of the present invention. As shown in FIG. 8, the preferred embodiment is in the scenario of Inter-MeNB Inter-SeNB handover in dual connectivity, assuming that the S-MeNB and the T-SeNB are D2D capable.

Step S802: The S-MeNB sends a handover request T-MeNB, and transmits necessary information to prepare handover to the target side. The handover request message carries D2D related information of the S-MeNB. The D2D related information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs.

Optionally, the information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource to perform the D2D communication transmission. The purpose (the purpose may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

Optionally, the D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, D2D communication resource configuration information, where the D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D Discover dedicated resource configuration information and D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. The D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

Step S804: The T-MeNB sends an SeNB Add Request message to the T-SeNB to request the T-SeNB to allocate resources of the dual connectivity operation of the UE, where the SeNB Add Request message carries the handover request message mentioned in the foregoing step. D2D related information of the S-MeNB.

Step S806: The T-SeNB replies to the SeNB Add Request Acknowledgement message to the T-MeNB, where the SeNB adds the request acknowledgement message carrying the D2D resource configuration information allocated by the T-SeNB.

The D2D resource configuration information may include, but is not limited to, one of the following information: D2D discovery resource configuration information, and D2D communication resource configuration information. The D2D discovery resource configuration information may include, but is not limited to, one of the following information: D2D discovery dedicated resource configuration information, and D2D discovery resource pool information. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information.

Step S808: The T-MeNB returns a handover request acknowledgement message to the S-MeNB, where the handover request acknowledgement message carries the D2D resource configuration information allocated by the T-SeNB carried in the SeNB addition request acknowledgement message mentioned in the foregoing step.

Step S810: The S-MeNB sends an SeNB release request message to the S-SeNB to release the initial resource. Upon receiving the SeNB release request message, the S-SeNB stops providing user data to the UE.

Step S812: The S-MeNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the D2D resource configuration information allocated by the T-SeNB carried in the handover request acknowledgement message mentioned in the foregoing step.

Steps S814-S816: The UE synchronizes to the T-MeNB and returns an RRC Connection Reconfiguration Complete message to the T-MeNB.

Step S818: The UE synchronizes to the T-SeNB.

Step S820: When the requested configuration has been successfully applied to the UE, the T-MeNB sends an SeNB reconfiguration complete message to notify the T-SeNB.

Steps S822-S824: The S-SeNB sends an SN status transmission message to the S-MeNB, and the S-MeNB forwards the SN status transmission message to the T-MeNB, and the T-MeNB forwards the SN status transmission message to the T-SeNB. Data pre-transmission from the S-SeNB occurs.

Steps S826-S832: The T-MeNB initials an S1 path switching request procedure to trigger a path update.

Step S834: The T-MeNB sends a UE context release request message to the S-MeNB, instructing the S-MeNB to release the UE context-related radio and control plane resources.

Step S836: The S-MeNB sends a UE context release message to the S-SeNB, instructing the S-SeNB to release the UE context-related radio and control plane resources.

Preferred embodiment six

FIG. 9 is a flow chart showing the continuity of maintaining D2D services in various handover scenarios of dual connectivity according to a preferred embodiment of the present invention. As shown in FIG. 9, the preferred embodiment is in the scenario of Inter-MeNB Inter-SeNB handover in dual connectivity, assuming that the S-SeNB and the T-MeNB are D2D capable.

Step S902: The S-MeNB sends a handover request T-MeNB, and transmits necessary information to prepare for handover to the target side. The handover request message carries D2D related information of the S-SeNB. The D2D related information may include, but is not limited to, at least one of the following information: D2D authorization information, information in Sidelink UEInformation, and D2D resource configuration information.

Optionally, the D2D authorization information may include, but is not limited to, at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status. The above authorization information corresponds to one or more PLMNs.

Optionally, the information in the Sidelink UEInformation may include, but is not limited to, at least one of the following: the frequency that the UE is interested in receiving the D2D communication, the frequency that the UE is interested in transmitting the D2D communication, and the UE requesting the network side to allocate the dedicated resource to perform the D2D communication transmission. The purpose (the purpose may be identified by the group ID of the D2D layer 2, that is, the ProSe Layer-2 Group ID), the UE is interested in listening to the D2D discovery, and the number of resources that the UE needs to transmit the D2D discovery in each transmission period.

Optionally, the D2D resource configuration information may include, but is not limited to, at least one of the following information: a D2D discovery resource configuration letter. The D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery dedicated resource configuration information, and D2D discovery resource pool information. The D2D discovery dedicated resource pool configuration information is a specific resource indicated by the time-frequency resource index. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information. The D2D communication dedicated resource configuration information may include, but is not limited to, at least one of the following: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status report (BSR) timer.

Before handover, the UE is dual-connected to the S-MeNB and the S-SeNB. The S-MeNB may broadcast the D2D resource pool information of the S-SeNB through the SIB: for the D2D discovery, the S-MeNB may broadcast the D2D discovery resource pool information of the Type 1 of the S-SeNB to the UE through the SIB19; for the D2D communication, the S-MeNB may The D2D communication resource pool information of Mode 2 of the S-SeNB is broadcast to the UE through the SIB 18. The S-MeNB may also request the D2D common resource pool (ie, the Type 1 resource pool or the Mode 2 resource pool) and/or the D2D dedicated resource configuration (that is, the Type 2B resource configuration or the Mode 1 resource configuration) for the UE by using the dedicated message: the UE sends the Sidelink UEInformation. The message is sent to the S-MeNB, and the S-MeNB sends the SeNB Add Request message to the S-SeNB to request the S-SeNB to allocate the resources of the dual-connection operation to the UE, and may include the information in the Sidelink UEInformation sent by the UE in the SeNB Add Request message. The S-SeNB may notify the S-MeNB of the D2D common resource pool and the D2D dedicated resource configuration allocated by the S-SeNB in the SeNB Add Request Acknowledgement message, and after receiving the information, the S-MeNB may perform reconfiguration in the RRC connection. The message notifies the UE of the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the S-SeNB. Regardless of which of the above, the S-MeNB is configured to store and store the allocated D2D common resource pool and/or D2D dedicated resource configuration of the S-SeNB. Regarding the D2D authorization information of the UE, the D2D authorization information of the UE can be obtained by the existing method at the S-MeNB. For example, the S-MeNB acquires the D2D authorization information of the UE from the MME by using the initial context setup request and the UE context modification request message. Meanwhile, in the handover process, the target base station (ie, the S-MeNB) obtains the S1 handover request message through the S1 handover request message. The D2D authorization information of the UE, for the X2 handover, the target base station (ie, the S-MeNB) acquires the D2D authorization information of the UE by using an X2 handover request message and an S1 path conversion request acknowledgement message. In summary, the S-MeNB may have D2D related information of the S-SeNB.

Of course, the S-MeNB may also obtain at least one of the following D2D related information of the S-SeNB in the SeNB Add Request Confirmation message in the SeNB addition preparation process of the S-SeNB: D2D authorization information, Sidelink UEInformation information, D2D resource configuration. information.

Step S904: The T-MeNB sends an SeNB Add Request message to the T-SeNB to request the T-SeNB to allocate resources of the dual connectivity operation of the UE.

Step S906: The T-SeNB returns a SeNB Add Request Acknowledgement message to the T-MeNB.

Step S908: The T-MeNB returns a handover request acknowledgement message to the S-MeNB, where the handover request acknowledgement message carries the D2D resource configuration information allocated by the T-MeNB.

The D2D resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery resource configuration information, and D2D communication resource configuration information. The D2D discovery resource configuration information may include, but is not limited to, at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information. The D2D discovery resource information may include, but is not limited to, at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information.

Step S910: The S-MeNB sends an SeNB release request message to the S-SeNB to release the initial resource. Upon receiving the SeNB release request message, the S-SeNB stops providing user data to the UE.

Step S912: The S-MeNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the D2D resource configuration information allocated by the T-MeNB carried in the handover request acknowledgement message mentioned in the foregoing step.

Steps S914-S916: The UE synchronizes to the T-MeNB and returns an RRC Connection Reconfiguration Complete message to the T-MeNB.

Step S918: The UE synchronizes to the T-SeNB.

Step S920: When the requested configuration has been successfully applied to the UE, the T-MeNB sends an SeNB reconfiguration complete message to notify the T-SeNB.

Steps S922-S924: The S-SeNB sends an SN status transmission message to the S-MeNB, and the S-MeNB forwards the SN status transmission message to the T-MeNB, and the T-MeNB forwards the SN status transmission message to the T-SeNB. Data pre-transmission from the S-SeNB occurs.

Steps S926-S932: The T-MeNB initials an S1 path switching request procedure to trigger a path update.

Step S934: The T-MeNB sends a UE context release request message to the S-MeNB, instructing the S-MeNB to release the UE context-related radio and control plane resources.

Step S936: The S-MeNB sends a UE context release message to the S-SeNB, instructing the S-SeNB to release the UE context-related radio and control plane resources.

FIG. 10 is a flowchart of another method for transmitting a resource configuration according to an embodiment of the present invention. As shown in FIG. 10, the method may include the following processing steps:

Step S1002: The target base station receives device-to-device D2D related information from the source base station;

Step S1004: The target base station returns D2D resource configuration information to the source base station, where the D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

It should be noted that the preferred embodiments shown in FIG. 4 to FIG. 10 described above are equally applicable to the transmission method of the resource configuration shown in FIG.

In a preferred implementation process, the foregoing D2D related information may include, but is not limited to, at least one of the following:

(1) D2D authorization information of the UE;

Optionally, the D2D authorization information of the UE includes at least one of the following: a D2D discovery authorization status, a D2D communication authorization status, a UE-to-Network Relay authorization status, and a remote UE authorization status, where the D2D authorization information of the UE corresponds to one or more Public Land Mobile Network (PLMN).

(2) Information in SidelinkUEInformation;

Optionally, the information in the Sidelink UEInformation includes at least one of the following: the UE is interested in receiving the frequency of the D2D communication; the UE is interested in transmitting the frequency of the D2D communication; and the UE requests the network side to allocate the dedicated resource to perform the D2D communication. The purpose of the transmission, wherein the destination is identified by the group ID of the D2D layer 2; the UE is interested in listening to the D2D discovery; the UE needs to transmit the amount of resources for D2D discovery in each transmission period.

(3) D2D resource configuration information. The D2D resource configuration information is transmitted from the source base station side to the target base station.

Optionally, the D2D resource configuration information includes at least one of the following: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated. The resource pool configuration information is a specific resource indicated by a time-frequency resource index; D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information, D2D communication The dedicated resource configuration information includes at least one of the following information: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status reporting timer.

In a preferred implementation process, the D2D resource configuration information returned by the target base station to the source base station may include at least one of the following information:

(1) D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information;

(2) D2D communication resource configuration information, wherein the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

In this embodiment, a resource configuration transmission device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

11 is a structural block diagram of a resource configuration transmission apparatus according to an embodiment of the present invention. As shown in FIG. 11, the apparatus is applied to a source base station (for example, a source MeNB or a source eNB), and the apparatus includes: a sending module 10, configured to Sending D2D related information to the target base station; the transmitting module 20 is configured to receive D2D resource configuration information from the target base station and notify the UE of the D2D resource configuration information, where the D2D resource configuration information is that the target base station allocates the UE according to the D2D related information. of.

In a preferred implementation process, the foregoing D2D related information may include, but is not limited to, at least one of the following:

(1) D2D authorization information of the UE;

Optionally, the D2D authorization information of the UE includes at least one of the following: a D2D discovery authorization status; and a D2D communication authorization status. State; UE-to-Network Relay authorization status; remote UE authorization status; wherein the UE's D2D authorization information corresponds to one or more Public Land Mobile Networks (PLMNs).

(2) Information in SidelinkUEInformation;

Optionally, the information in the Sidelink UEInformation includes at least one of the following: the UE is interested in receiving the frequency of the D2D communication; the UE is interested in transmitting the frequency of the D2D communication; and the UE requests the network side to allocate the dedicated resource for the purpose of the D2D communication transmission, where The destination is identified by the group ID of the D2D layer 2; the UE is interested in listening to the D2D discovery; the UE needs to transmit the number of resources for D2D discovery in each transmission period.

(3) D2D resource configuration information. The D2D resource configuration information is transmitted from the source base station side to the target base station.

Optionally, the D2D resource configuration information includes at least one of the following: D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated. The resource pool configuration information is a specific resource indicated by a time-frequency resource index; D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, D2D communication resource pool information, D2D communication The dedicated resource configuration information includes at least one of the following information: a D2D cell radio network temporary identifier, a modulation and coding scheme, and a buffer status reporting timer.

In a preferred implementation process, the D2D resource configuration information returned by the target base station to the source base station may include at least one of the following information:

(1) D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information;

(2) D2D communication resource configuration information, wherein the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information.

Preferably, the sending module 10, configured to send D2D related information to the target base station, includes one of the following:

Mode 1, the source MeNB notifies the D2D related information of the source SeNB to the target SeNB;

Mode 2: The source MeNB notifies the target eNB of the D2D related information of the source SeNB;

Mode 3: The source MeNB notifies the target MeNB of the D2D related information of the source SeNB;

Mode 4: The source MeNB notifies the target SeNB of the D2D related information of the source MeNB;

In a mode 5, the source eNB notifies the target SeNB of the D2D related information of the source eNB.

Optionally, in the foregoing manner 1, the source MeNB notifying the target SeNB of the D2D related information of the source SeNB may further include, but is not limited to, one of the following manners:

Mode 1.1: The source MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB Add Request message;

In the mode 1.2, the source MeNB notifies the target MeNB of the D2D related information of the source SeNB in the handover request message, and the target MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB addition request message.

Optionally, in mode 2 or mode 3, the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB may include but is not limited to one of the following:

In the mode 2.1, the source MeNB notifies the target eNB of the D2D related information of the source SeNB in the handover request message.

Mode 3.1: The source MeNB notifies the target MeNB of the D2D related information of the source SeNB in the handover request message.

Optionally, FIG. 12 is a structural block diagram of a resource configuration transmission apparatus according to a preferred embodiment of the present invention. As shown in FIG. 12, the apparatus further includes: a processing module 30 configured to acquire and store D2D related information of the source SeNB.

Optionally, the processing module 30, the D2D related information that is set to be acquired and stored includes one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information.

In a preferred implementation process, the information in the above Sidelink UEInformation is obtained by the source MeNB from the Sidelink UEInformation message sent by the UE.

Optionally, the processing module 30 is configured to acquire and store the D2D resource pool information of the source SeNB by using the D2D resource pool information of the source SeNB by the system information block SIB; or the source MeNB requests the D2D common resource pool for the UE by using a dedicated message. The D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB is acquired and stored in the process of configuring the D2D dedicated resource.

Optionally, the processing module 30 is configured to: when the SeNB Add Request message is sent to the source SeNB to request the source SeNB to allocate the dual connectivity operation resource to the UE, the information in the Sidelink UEInformation is carried in the SeNB Add Request message, and the source is received from the source The SeNB adds a request acknowledgement message, where the add request acknowledgement message carries the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the active SeNB.

Optionally, the sending module 10 is configured to notify the target MeNB of the D2D related information in the handover request message, so that the target MeNB notifies the target SeNB of the D2D related information of the source MeNB or the source eNB in the SeNB addition request message. .

Optionally, the transmission module 20 is configured to receive D2D resource configuration information from the target base station and notify the UE of the D2D resource configuration information according to one of the following manners:

Mode 1, the source MeNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information;

Mode 2: The source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE of the D2D resource configuration information.

Mode 3: The source MeNB receives the D2D resource configuration information allocated by the target MeNB, and notifies the UE of the D2D resource configuration information.

Manner 4: The source MeNB receives the D2D resource configuration information allocated by the target eNB, and notifies the UE of the D2D resource configuration information.

Optionally, the source MeNB or the source eNB receives the D2D resource configuration information allocated by the target SeNB, and the D2D resource is used. The configuration information notification to the UE may include: the source MeNB or the source eNB receiving the D2D resource configuration information allocated by the target SeNB in the handover request acknowledgement message, and notifying the D2D resource configuration information to the UE, where the MeNB is from the target SeNB. The D2D resource configuration information is obtained by sending the SeNB Add Request Acknowledgement message; or the source MeNB receives the D2D resource configuration information allocated by the target SeNB in the SeNB Add Request Acknowledgement message, and notifies the UE of the D2D resource configuration information.

Optionally, the source MeNB receiving the D2D resource configuration information allocated by the target eNB or the target MeNB, and notifying the D2D resource configuration information to the UE may include: the source MeNB receiving the D2D resource configuration allocated by the target eNB or the target MeNB in the handover request acknowledgement message. Information and notify the UE of D2D resource configuration information.

Optionally, the transmission module 20 is configured to notify the UE of the D2D resource configuration information in one of the following manners:

The mode 1, the source MeNB notifies the D2D resource configuration information allocated by the target SeNB to the UE in the RRC connection reconfiguration message;

The mode 2, the source MeNB notifies the D2D resource configuration information allocated by the target eNB to the UE in the RRC connection reconfiguration message;

Manner 3: The source MeNB notifies the UE of the D2D resource configuration information allocated by the target MeNB in the RRC connection reconfiguration message.

FIG. 13 is a structural block diagram of another resource configuration transmission apparatus according to an embodiment of the present invention. As shown in FIG. 13, the apparatus is applied to a target base station, and the apparatus includes: a receiving module 40 configured to receive device-to-device D2D related information from a source base station; and a feedback module 50 configured to return D2D resource configuration information to the source base station The D2D resource configuration information is allocated by the target base station to the UE according to the D2D related information.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store various steps mentioned in the transmission method for performing the resource configuration described above.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Perform the steps shown or described Alternatively, each of them may be fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof may be fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

According to the embodiment of the present invention, the source base station sends the D2D related information to the target base station; the source base station receives the D2D resource configuration information from the target base station, and notifies the D2D resource configuration information to the UE, where the D2D resource configuration information is the target base station according to the D2D. The related information is allocated to the UE, which solves the problem that the UE cannot ensure the continuity of the D2D service in the various handover scenarios of the dual connection in the related art, and can effectively ensure that the UE maintains the D2D in the dual connection switching scenarios. Business continuity.

Claims (40)

A method for transmitting a resource configuration includes: The source base station sends device-to-device D2D related information to the target base station; The source base station receives the D2D resource configuration information from the target base station, and notifies the D2D resource configuration information to the user equipment UE, where the D2D resource configuration information is that the target base station is based on the D2D related information. The UE is allocated. The method of claim 1, wherein the transmitting, by the source base station, the D2D related information to the target base station comprises one of the following: The source primary base station MeNB notifies the target SeNB of the D2D related information of the source secondary base station SeNB; The source MeNB notifies the target macro base station eNB of the D2D related information of the source SeNB; The source MeNB notifies the target MeNB of the D2D related information of the source SeNB; The source MeNB notifies the target SeNB of the D2D related information of the source MeNB; The source eNB notifies the target SeNB of the D2D related information of the source eNB. The method according to claim 2, wherein the source MeNB notifying the target SeNB of the D2D related information of the source SeNB includes one of the following: The source MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB Add Request message; The source MeNB notifies the target MeNB of the D2D related information of the source SeNB in the handover request message, and the target MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB addition request message. The method according to claim 2, wherein the source MeNB notifying the target eNB or the target MeNB of the D2D related information of the source SeNB includes: The source MeNB notifies the target eNB or the target MeNB of the D2D related information of the source SeNB in the handover request message. The method of claim 2, wherein before the source MeNB sends the request message to the target base station, the method further includes: The source MeNB acquires and stores D2D related information of the source SeNB. The method according to claim 5, wherein the source MeNB acquires and stores D2D related information of the source SeNB, including one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information. The method according to claim 6, wherein the information in the Sidelink UEInformation is obtained by the source MeNB from a Sidelink UEInformation message sent by the UE. The method according to claim 6, wherein the source MeNB acquires and stores the D2D resource configuration information including one of the following: The source MeNB acquires and stores the D2D resource pool information of the source SeNB by broadcasting the D2D resource pool information of the source SeNB through the system information block SIB. The source MeNB acquires and stores the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB in the process of requesting the D2D common resource pool and/or the D2D dedicated resource configuration by the UE through a dedicated message. The method according to claim 8, wherein the source MeNB acquires and stores the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB, including: When the source MeNB sends an SeNB Add Request message to the source SeNB to request the source SeNB to allocate resources of the dual connectivity operation to the UE, the information in the Sidelink UEInformation is carried in the SeNB Add Request message; The source MeNB receives an add request acknowledgement message from the source SeNB, where the add request acknowledgement message carries a D2D common resource pool and/or a D2D dedicated resource configuration allocated by the active SeNB. The method according to claim 2, wherein, when the source base station is a source MeNB or a source eNB, the source base station notifying the target SeNB of its own D2D related information includes: The source MeNB or the source eNB notifies the target MeNB of its own D2D related information in the handover request message; The target MeNB notifies the target SeNB of the D2D related information of the source MeNB or the source eNB in the SeNB addition request message. The method of claim 1, wherein the D2D related information comprises at least one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information. The method of claim 11, wherein the D2D authorization information of the UE comprises at least one of the following: D2D discovery authorization status; D2D communication authorization status; UE-to-Network Relay authorization status; Remote UE authorization status; The D2D authorization information of the UE corresponds to one or more public land mobile network PLMNs. The method of claim 11, wherein the information in the Sidelink UEInformation comprises at least one of the following: The UE is interested in receiving the frequency of the D2D communication; The frequency that the UE is interested in transmitting D2D communication; The UE requests the network side to allocate dedicated resources for the purpose of D2D communication transmission, where the destination is identified by the group ID of the D2D layer 2; The UE is interested in listening to D2D discovery; The number of resources that the UE needs to send for D2D discovery in each transmission cycle. The method of claim 11, wherein the D2D resource configuration information comprises at least one of the following: The D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated resource pool configuration information is indicated by a time-frequency resource index. Specific resources; The D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following: D2D communication dedicated resource configuration information, D2D communication resource pool information, and the D2D communication dedicated resource configuration information includes at least one of the following information: a D2D cell. Radio network temporary identification, modulation and coding scheme, and buffer status reporting timer. The method according to claim 1, wherein the source base station receives the resource configuration information from the target base station and notifies the UE of the D2D resource configuration information to include one of the following: The source MeNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the D2D resource configuration information to the UE; The source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the D2D resource configuration information to the UE; The source MeNB receives the D2D resource configuration information allocated by the target MeNB, and notifies the D2D resource configuration information to the UE; The source MeNB receives the D2D resource configuration information allocated by the target eNB, and notifies the UE of the D2D resource configuration information. The method according to claim 15, wherein the source MeNB or the source eNB receives the D2D resource configuration information allocated by the target SeNB, and notifies the UE that the D2D resource configuration information includes one of the following: The source MeNB or the source eNB receives the D2D resource configuration information allocated by the target SeNB in the handover request acknowledgement message, and notifies the D2D resource configuration information to the UE, where the MeNB is from the target SeNB. And acquiring the D2D resource configuration information by sending a SeNB add request acknowledge message; The source MeNB receives the D2D resource configuration information allocated by the target SeNB in the SeNB addition request acknowledgement message, and notifies the UE of the D2D resource configuration information. The method of claim 15, wherein the source MeNB receives the allocation of the target eNB or the target MeNB And the notifying the D2D resource configuration information to the UE includes: The source MeNB receives the D2D resource configuration information allocated by the target eNB or the target MeNB in the handover request acknowledgement message, and notifies the UE of the D2D resource configuration information. The method according to claim 1, wherein the source base station notifying the UE of the D2D resource configuration information includes one of the following: The source MeNB notifies the UE of the D2D resource configuration information allocated by the target SeNB to the UE in a radio resource control RRC connection reconfiguration message; The source MeNB notifies the UE of the D2D resource configuration information allocated by the target eNB in the RRC connection reconfiguration message; The source MeNB notifies the D2D resource configuration information allocated by the target MeNB to the UE in an RRC connection reconfiguration message; The source eNB notifies the UE of the D2D resource configuration information allocated by the target SeNB in an RRC connection reconfiguration message. The method of claim 1, wherein the D2D resource configuration information comprises at least one of the following information: The D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information; The D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information. A method for transmitting a resource configuration includes: The target base station receives device-to-device D2D related information from the source base station; The target base station returns D2D resource configuration information to the source base station, where the D2D resource configuration information is allocated by the target base station to the user equipment UE according to the D2D related information. A resource configuration transmission device, the device being applied to a source base station, comprising: a sending module, configured to send device-to-device D2D related information to the target base station; a transmission module, configured to receive D2D resource configuration information from the target base station, and notify the user equipment UE of the D2D resource configuration information, where the D2D resource configuration information is that the target base station according to the D2D related information Assigned to the UE. The apparatus according to claim 21, wherein said transmitting module, configured to send said D2D related information to said target base station, comprises one of the following: Notifying the target SeNB of the D2D related information of the source secondary base station SeNB; Notifying the D2D related information of the source SeNB to the target macro base station eNB; Notifying the target MeNB of the D2D related information of the source SeNB; Notifying the target SeNB of the D2D related information of the source MeNB; Notifying the target SeNB of the D2D related information of the source eNB. The apparatus according to claim 22, wherein the sending module is configured to notify the target SeNB of the D2D related information of the source SeNB in an SeNB addition request message; or, in the handover request message, the source SeNB The D2D related information is notified to the target MeNB and the target MeNB notifies the target SeNB of the D2D related information of the source SeNB in the SeNB Add Request message. The apparatus according to claim 22, wherein the sending module is configured to notify the target eNB or the target MeNB of the D2D related information of the source SeNB in a handover request message. The device of claim 22, wherein the device further comprises: The processing module is configured to acquire and store D2D related information of the source SeNB. The apparatus according to claim 25, wherein the processing module, the D2D related information set to be acquired and stored comprises one of: D2D authorization information of the UE, information in Sidelink UEInformation, D2D resource configuration information. The apparatus according to claim 26, wherein the information in the Sidelink UEInformation is obtained by the source MeNB from a Sidelink UEInformation message sent by the UE. The apparatus according to claim 26, wherein the processing module is configured to acquire and store D2D resource pool information of the source SeNB by broadcasting D2D resource pool information of the source SeNB through a system information block SIB; or The source MeNB acquires and stores the D2D common resource pool and/or the D2D dedicated resource configuration allocated by the source SeNB in the process of requesting the D2D common resource pool and/or the D2D dedicated resource configuration by the UE through a dedicated message. The apparatus according to claim 28, wherein the processing module is configured to add at a SeNB when transmitting a SeNB Add Request message to the source SeNB to request the source SeNB to allocate a resource of a dual connectivity operation to the UE The request message carries information in the Sidelink UEInformation, and receives an add request acknowledgement message from the source SeNB, where the add request acknowledgement message carries a D2D common resource pool and/or a D2D dedicated resource configuration allocated by the active SeNB. The apparatus according to claim 22, wherein the sending module is configured to notify the target MeNB of its own D2D related information in the handover request message, so that the target MeNB may source the MeNB or the SeNB in the SeNB Add Request message. The D2D related information of the source eNB is notified to the target SeNB. The apparatus of claim 21, wherein the D2D related information comprises at least one of the following: D2D authorization information of the UE, information in Sidelink UEInformation, and D2D resource configuration information. The apparatus according to claim 31, wherein the D2D authorization information of the UE comprises at least one of the following: D2D discovery authorization status; D2D communication authorization status; UE-to-Network Relay authorization status; Remote UE authorization status; The D2D authorization information of the UE corresponds to one or more public land mobile network PLMNs. The apparatus of claim 31, wherein the information in the Sidelink UEInformation comprises at least one of the following: The UE is interested in receiving the frequency of the D2D communication; The frequency that the UE is interested in transmitting D2D communication; The UE requests the network side to allocate dedicated resources for the purpose of D2D communication transmission, where the destination is identified by the group ID of the D2D layer 2; The UE is interested in listening to D2D discovery; The number of resources that the UE needs to send for D2D discovery in each transmission cycle. The apparatus of claim 31, wherein the D2D resource configuration information comprises at least one of the following: The D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information, and D2D discovery dedicated resource pool configuration information is indicated by a time-frequency resource index. Specific resources; The D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following: D2D communication dedicated resource configuration information, D2D communication resource pool information, and the D2D communication dedicated resource configuration information includes at least one of the following information: a D2D cell. Radio network temporary identification, modulation and coding scheme, and buffer status reporting timer. The apparatus according to claim 21, wherein the transmission module is configured to receive the D2D resource configuration information from the target base station and notify the UE of the D2D resource configuration information according to one of the following manners: : Receiving the D2D resource configuration information allocated by the target SeNB, and notifying the D2D resource configuration information to the UE; Receiving the D2D resource configuration information allocated by the target MeNB, and notifying the D2D resource configuration information to the UE; Receiving, by the target eNB, the D2D resource configuration information, and notifying the D2D resource configuration information to the UE. The apparatus according to claim 35, wherein the transmission module is configured to receive the D2D resource configuration information allocated by the target SeNB and sent by the target MeNB in the handover request acknowledgement message, and notify the D2D resource configuration information Giving the UE, wherein the MeNB acquires the D2D resource configuration information from a target SeNB by sending an SeNB addition request acknowledgement message; or, receiving, by the target SeNB, the D2D resource configuration information allocated in a SeNB add request acknowledgement message, and Notifying the UE of the D2D resource configuration information. The apparatus according to claim 35, wherein the transmission module is configured to receive the D2D resource configuration information allocated by the target eNB or the target MeNB in the handover request acknowledgement message, and notify the D2D resource configuration information to the Said UE. The apparatus according to claim 21, wherein the transmission module is configured to notify the UE of the D2D resource configuration information in one of the following manners: And notifying, by the target SeNB, the D2D resource configuration information to the UE in a radio resource control RRC connection reconfiguration message; Transmitting, by the target eNB, the D2D resource configuration information to the UE in an RRC connection reconfiguration message; The D2D resource configuration information allocated by the target MeNB is notified to the UE in an RRC connection reconfiguration message. The apparatus of claim 21, wherein the D2D resource configuration information comprises at least one of the following information: The D2D discovery resource configuration information, where the D2D discovery resource configuration information includes at least one of the following information: D2D discovery dedicated resource configuration information, D2D discovery resource pool information; The D2D communication resource configuration information, where the D2D communication resource configuration information includes at least one of the following information: D2D communication dedicated resource configuration information, and D2D communication resource pool information. A resource configuration transmission device includes: a receiving module, configured to receive device-to-device D2D related information from the source base station; The feedback module is configured to return D2D resource configuration information to the source base station, where the D2D resource configuration information is allocated by the target base station to the user equipment UE according to the D2D related information.

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