WO2015176251A1

WO2015176251A1 - Signal transmission method and device in device-to-device communication

Info

Publication number: WO2015176251A1
Application number: PCT/CN2014/078003
Authority: WO
Inventors: 苗金华; 权威; 高永强; 张丹丹; 王瑜
Original assignee: 华为技术有限公司
Priority date: 2014-05-21
Filing date: 2014-05-21
Publication date: 2015-11-26
Also published as: CN105379406A; CN105379406B

Abstract

The present invention relates to the technical field of mobile communication, particularly to a signal transmission method and device in device-to-device (D2D) communication for solving the problem that applying a discontinuous reception (DRX) mechanism to D2D communication may cause a signal transmission failure. The signal transmission method in the D2D communication comprises: a first user equipment (UE) obtains DRX cycle configuration information of a second UE; according to the DRX configuration information of the second UE, the first UE determines the time when the second UE is in an active state; during the time when the second UE is in the active state, the first UE sends a signal to the second UE based on D2D communication mode, thus increasing the signal transmission success rate.

Description

Signal transmission method and device in device to device D2D communication

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a signal transmission method and apparatus in D2D communication. Background technique

Device-to-Device (D2D) communication based on Long Term Evolution (LTE) system is a kind of communication under the control of a cellular communication system, allowing terminals to directly communicate by multiplexing cell resources. The communication between the terminal and the terminal can be bypassed by the technology of the base station. D2D communication can increase the spectrum efficiency of the cellular communication system and reduce the terminal transmission power, especially for short-distance communication between terminals. In the D2D communication, the user equipment (User Equipment, UE) has an application ID (Application ID) and a group ID (Group ID), where different applications (such as voice calls, public security broadcasts, etc.) correspond to different Application IDs, and different The set of UEs (each UE set includes multiple UEs) corresponds to a different Group ID.

In LTE, the Discontinuous Reception (DRX) function control entity of the User Equipment (UE) is located in the Media Access Control (MAC) layer of the protocol stack; its main function is to control the physical layer. Sending an instruction to notify the physical layer to listen to the Physical Downlink Control Channel (PDCCH) at a specific time, and does not turn on the receiving antenna for the rest of the time, and is in a sleep state; the specific time here is the time when the UE is in an active state; The time in which the sleep state is the time when the UE is in an inactive state. Through this DRX mechanism, system resource configuration can be optimized, and the power consumption of the UE can be saved.

When the DRX mechanism is applied to D2D communication, it is possible that in the two parties that need to communicate, the time when the signal sender sends the signal is the time when the other party is in the inactive state; in this case, the other party cannot receive the message. The signal sent by the signal transmission method causes the signal transmission to fail. Summary of the invention

Embodiments of the present invention provide a signal transmission method and apparatus for solving a problem that when a DRX mechanism is applied to D2D communication, a signal transmission failure may occur.

In a first aspect, a signal transmission apparatus for device-to-device D2D communication is provided, the apparatus comprising:

An acquiring module, configured to acquire, for the first user equipment UE, a continuity receiving period DRX configuration information of the second UE;

a determining module, configured to determine, according to the DRX configuration information of the second UE acquired by the acquiring module, a time when the second UE is in an active state;

And a sending module, configured to send a signal to the second UE according to a D2D communication manner, when the second UE determined by the determining module is in an active state.

With reference to the first aspect, in a first possible implementation, the acquiring module is specifically configured to: send a request message to a base station serving the first UE, and receive a discontinuous reception period of the second UE sent by the base station The DRX configuration information, the DRX configuration information of the second UE is determined according to the request message.

With reference to the first aspect, in a second possible implementation manner, the acquiring module is specifically configured to: receive a discontinuous reception period DRX configuration information that is sent by a base station serving the first UE, and an application identifier of the UE, an application ID or a group. Determining a correspondence of the group ID; determining DRX configuration information of the second UE according to the correspondence and the Application ID or the Group ID of the second UE; combining the first aspect, or the first or second possible of the first aspect In a third possible implementation manner, the sending module is specifically configured to:

And transmitting, by the second UE, a discovery signal for detecting, by the second UE, the first UE, or sending communication information to the second UE, according to a D2D communication manner.

With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation, the determining module is specifically configured to: The DRX cycle included in the DRX configuration information of the second UE, and the DRX start offset And the duration of the active state in each DRX cycle, determining the time when the second UE is in an active state. The second aspect provides a signal transmission apparatus in device-to-device D2D communication, including: a receiving module, configured to receive a discontinuous reception period DRX configuration information that is sent by a first user equipment UE that is used to obtain a second UE. Request message

a sending module, configured to: according to the request message received by the receiving module, the second UE

The DRX configuration information is sent to the first UE, where the DRX configuration information is used by the first UE to determine the time when the second UE is in an active state, and according to the determined time direction that the second UE is in an active state. The second UE transmits a signal.

With reference to the second aspect, in a first possible implementation, the sending module is further configured to: before the sending the DRX configuration information of the second UE to the first UE,

Sending, by the base station of the UE, a request message for acquiring DRX configuration information of the second UE;

The receiving module is further configured to receive DRX configuration information of the second UE that is sent by a base station that serves the second UE.

In a third aspect, a signal transmission apparatus for device-to-device D2D communication is provided, the apparatus comprising:

a determining module, configured to determine a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier Application ID or the group identifier Group ID of the UE;

a sending module, configured to send the corresponding relationship determined by the determining module to a first UE served by a base station; the corresponding relationship is used by the first UE to determine DRX configuration information of the second UE, where the DRX configuration The information is used by the first UE to determine a time when the second UE is in an active state, and send a signal to the second UE according to the determined time that the second UE is in an active state.

With reference to the third aspect, in a first possible implementation, the determining module is specifically configured to: configure a correspondence between the DRX configuration information and an application ID or a group ID of each UE served by the base station, and

And obtaining a correspondence between the DRX configuration information configured by the other base station and the Application ID or the Group ID of each UE served by the other base station.

Combining the third aspect, or the first possible implementation of the third aspect, in the second possible In an implementation manner, the device further includes:

And a receiving module, configured to receive the request information that is sent by the first UE to obtain the corresponding relationship, before the sending module sends the corresponding relationship to the serving first UE.

According to a fourth aspect, a signal transmission apparatus for device-to-device D2D communication is provided, including: a receiver, configured to acquire, for a first UE, continuity receiving period DRX configuration information of a second UE; The DRX configuration information of the second UE acquired by the receiver determines a time when the second UE is in an active state;

And a transmitter, configured to send a signal to the second UE according to a D2D communication manner, when the second UE determined by the processor is in an active state.

With reference to the fourth aspect, in a first possible implementation manner, the transmitter is further configured to send a request message to a base station serving the first UE;

The receiver is specifically configured to: receive discontinuous reception period DRX configuration information of the second UE sent by the base station, where the DRX configuration information of the second UE is determined according to the request message sent by the sender.

With reference to the fourth aspect, in a second possible implementation manner, the receiver is specifically configured to: receive a discontinuous reception period DRX configuration information that is sent by a base station serving the first UE, and an application identifier of the UE, an application ID or a group. Determining a correspondence between the group IDs; determining DRX configuration information of the second UE according to the correspondence relationship and the Application ID or the Group ID of the second UE;

With reference to the fourth aspect, or the first or second possible implementation manner of the fourth aspect, in a third possible implementation, the transmitter is specifically configured to:

With reference to the fourth aspect, or any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation, the processor is specifically configured to: Determining a DRX period, a DRX start offset, and an active state duration in each DRX period of the DRX configuration information of the second UE, determining a time when the second UE is in an active state.

In a fifth aspect, a signal transmission device for device-to-device D2D communication is provided, the device package Includes:

a receiver, configured to receive, by the first UE, the request message for acquiring the discontinuous reception period DRX configuration information of the second UE;

a transmitter, configured to send, according to the request message received by the receiver, the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine the second The time when the UE is in an active state, and sending a signal to the second UE according to the determined time that the second UE is in an active state.

With reference to the fifth aspect, in a first possible implementation, the transmitter is further configured to serve the second UE before sending the DRX configuration information of the second UE to the first UE The base station sends a request message for acquiring the DRX configuration information of the second UE;

The receiver is further configured to receive DRX configuration information of the second UE that is sent by a base station that serves the second UE.

The sixth aspect provides a signal transmission apparatus in device-to-device D2D communication, including: a processor, configured to determine a correspondence between a discontinuous reception period DRX configuration information and an application identifier Application ID or a group identifier Group ID of the UE;

a transmitter, configured to send the corresponding relationship determined by the processor to a first UE served by a base station, where the correspondence is used by the first UE to determine DRX configuration information of the second UE, where the DRX configuration The information is used by the first UE to determine a time when the second UE is in an active state, and send a signal to the second UE according to the determined time that the second UE is in an active state.

With reference to the sixth aspect, in a first possible implementation manner, the processor is specifically configured to: configure a correspondence between the DRX configuration information and an application ID or a group ID of each UE served by the base station, and

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the apparatus further includes:

a receiver, configured to send, before the transmitter sends the corresponding relationship to the first UE of the service, Receiving, by the first UE, request information for acquiring the correspondence relationship.

The seventh aspect, the method for transmitting a signal in device-to-device D2D communication, comprising: acquiring, by a first user equipment UE, discontinuous reception period DRX configuration information of a second UE; The DRX configuration information determines a time when the second UE is in an active state;

The first UE sends a signal to the second UE according to a D2D communication manner in a time when the second UE is in an active state.

With reference to the seventh aspect, in a first possible implementation, the acquiring, by the first UE, the DRX configuration information of the second UE includes:

The first user equipment UE sends a request message to the base station serving the first UE; the first UE receives the DRX configuration information of the second UE sent by the base station, and the DRX configuration information of the second UE is based on The request message is determined.

With reference to the seventh aspect, in a second possible implementation, the acquiring, by the first UE, the DRX configuration information of the second UE includes:

The first UE receives a correspondence between the discontinuous reception period DRX configuration information that is sent by the base station serving the first UE and the application identifier Application ID or the group identifier Group ID of the UE; And determining, by the relationship and the Application ID or the Group ID of the second UE, the DRX configuration information of the second UE.

With reference to the seventh aspect, or the first or the second possible implementation manner of the seventh aspect, in a third possible implementation manner, the first UE sends a signal to the second UE according to a D2D communication manner, including :

And transmitting, by the first UE, a discovery signal for detecting, by the second UE, the first UE, or sending communication information to the second UE, according to a D2D communication manner.

With reference to the seventh aspect, or any one of the first to the third possible implementation manners of the seventh aspect, in a fourth possible implementation manner, the first UE is according to the second The time when the second UE is in an active state is determined by the DRX configuration information of the UE, including:

Determining, by the first UE, a DRX cycle included in DRX configuration information of the second UE, The DRX starts to bias and the duration of the active state in each DRX cycle determines the time at which the second UE is in an active state.

The eighth aspect provides a signal transmission method in device-to-device D2D communication, including: receiving, by a base station, a request message for acquiring a discontinuous reception period DRX configuration information of a second UE sent by a first UE served by the base station ;

Sending, by the base station, the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine that the second UE is in an active state, and according to the determined location The time when the second UE is in an active state sends a signal to the second UE.

With reference to the eighth aspect, in a first possible implementation, before the sending, by the base station, the DRX configuration information of the second UE to the first UE, the method further includes:

After determining that the base station serving the second UE is a different base station, the base station sends a request message for acquiring the DRX configuration information of the second UE to the base station serving the second UE, and receives the service second The DRX configuration information of the second UE sent by the base station of the UE.

The ninth aspect, the method for transmitting a signal in a device-to-device D2D communication, comprising: determining, by a base station, a correspondence between a DRX configuration information of a discontinuous reception period and an application identifier Application ID or a group identifier Group ID of the UE;

Determining, by the base station, the determined correspondence to the first UE served; the corresponding relationship is used by the first UE to determine DRX configuration information of the second UE, where the DRX configuration information is used for the first The UE determines a time when the second UE is in an active state, and sends a signal to the second UE according to the determined time that the second UE is in an active state.

With reference to the ninth aspect, in a first possible implementation manner, the determining, by the base station, the correspondence between the DRX configuration information and the Application ID or the Group ID of the UE, including:

The base station configures a correspondence between the DRX configuration information and an Application ID or a Group ID of each UE served by the base station, and

In combination with the ninth aspect, or the first possible implementation of the ninth aspect, in the second possible In an implementation manner, before the sending, by the base station, the determined corresponding relationship to the first UE of the service, the method further includes:

Receiving, by the base station, request information that is sent by the first UE to obtain the corresponding relationship.

The method or apparatus provided by any of the foregoing aspects, when the DRX mechanism is applied to the D2D communication, the first UE may acquire the DRX configuration information of the second UE that needs to communicate with the UE, and determine according to the DRX configuration information of the second UE. The time when the second UE is in the active state, and determining the time for transmitting the signal to the second UE according to the time when the second UE is in the active state. Since the signal is transmitted during the time when the second UE is in the active state, the probability of successful signal transmission is improved. DRAWINGS

Figure l a is a schematic structural diagram of a system when a base station serving a first UE and a base station serving a second UE are the same base station;

Figure lb is a schematic diagram of the system structure when the base station serving the first UE and the base station serving the second UE are different base stations.

2 is a schematic diagram of a first UE transmitting a signal to a second UE in a time when the second UE is in an inactive state;

3 is a flowchart of a signal transmission method in D2D communication according to Embodiment 1 of the present invention; FIG. 4 is a schematic diagram of a signal sent by a first UE in a set of times when a plurality of second UEs are in an active state;

5 is a schematic diagram of a signal sent by a first UE within a minimum duration of time including a plurality of second UEs being in an active state;

6 is a flowchart of a signal transmission method in D2D communication according to Embodiment 2 of the present invention; FIG. 7 is a flowchart of a signal transmission method in D2D communication according to Embodiment 3 of the present invention; FIG. 9 is a flowchart of a signal transmission method in D2D communication according to Embodiment 5 of the present invention; FIG. 10 is a flowchart of a signal transmission method in D2D communication according to Embodiment 6 of the present invention; 11 is a flowchart of a signal transmission method in D2D communication according to Embodiment 7 of the present invention; 12 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 8 of the present invention; FIG. 13 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 9 of the present invention; FIG. 15 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 11 of the present invention;

16 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 12 of the present invention;

Figure 17 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 13 of the present invention. detailed description

The signal transmission system in the D2D communication provided by the embodiment of the present invention includes a first UE and a second UE performing D2D communication, a base station serving the first UE, and a base station serving the second UE, where the base station and the service serving the first UE The base stations of the second UE may be the same base station or different base stations. As shown in FIG. 1B, a system structure diagram when the base station serving the first UE and the base station serving the second UE are the same base station, as shown in FIG. 1B, is a base station serving the first UE and serving the second UE. Schematic diagram of the system structure when the base stations are different base stations.

If the DRX mechanism is applied to the D2D communication, the first UE sends the signal to the second UE, and the second UE is only in the active state to receive the signal sent by the first UE. As shown in FIG. 2, the first UE does not. Sending a signal to the second UE in a time when the second UE is in an active state, but sending a signal to the second UE in a time when the second UE is in an inactive state, so that the second UE cannot receive the first UE. signal.

In the embodiment of the present invention, when the DRX mechanism is applied to the D2D communication, the first UE may obtain the DRX configuration information of the second UE that needs to communicate with the first UE, and determine that the second UE is in the active state according to the DRX configuration information of the second UE. And determining, according to the time when the second UE is in the active state, the time for sending the signal to the second UE, thereby improving the probability of successful signal transmission; the first UE acquiring the DRX configuration information of the second UE may be in multiple manners. The invention gives two examples, one An example is to obtain the DRX configuration information of the second UE by means of the request to the base station, and the other is to determine the setting according to the application identifier of the UE, the application ID, or the correspondence between the group ID and the DRX configuration information. DRX configuration information of the UE with Application ID or Group ID. The method for signal transmission in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

FIG. 3 is a flow chart of a signal transmission method in D2D communication according to Embodiment 1 of the present invention. In this embodiment, the first UE obtains the DRX configuration information of the second UE by using the manner requested by the base station, and includes the following content.

S301: The first UE sends a request message for acquiring DRX configuration information of the second UE to the base station serving the first UE.

In this step, the first UE may send a request message for acquiring the DRX configuration information of the second UE to the base station serving the first UE, where the request message may include the identifier of the second UE; Other one or more UEs other than the UE that need to perform D2D communication with the first UE. The first UE may request to acquire the DRX configuration information of the other one or more second UEs from the base station serving the first UE.

S302: The first UE receives DRX configuration information of the second UE that is sent by the base station according to the request message.

In the embodiment of the present invention, the first UE and the second UE are both UEs under the coverage of the cellular network, and the base station of the first UE and the base station serving the second UE may be the same or different. Specifically, the first UE and the second UE may be UEs under the same cell coverage of the same base station, or may be UEs covered by neighboring cells of the same base station, or may be phases of different base stations. The UE under the coverage of the neighboring cell. After receiving the request message for acquiring the DRX configuration information of the second UE sent by the first UE, the base station serving the first UE may first determine whether the second UE belongs to its own service object, if the second UE belongs to its own service. And the object, the DRX configuration information configured for the second UE is sent to the first UE; if the second UE does not belong to the service object of the second UE, determining the base station serving the second UE, and serving the second UE The base station sends a request message for acquiring the DRX configuration information of the second UE, and receives the DRX configuration of the second UE sent by the base station serving the second UE. After the information, the DRX configuration information of the second UE is sent to the first UE.

S303: The first UE determines, according to the DRX configuration information of the second UE, a time when the second UE is in an active state.

In this step, the DRX configuration information may be in multiple embodiments. For example, the DRX configuration information may include information about the time when the second UE is in the active state, so that after receiving the DRX configuration information, the first UE may directly The time at which the second UE is in an active state is determined. For example, the DRX configuration information may include information about the time when the second UE is in the dormant state, so that after receiving the DRX configuration information, the first UE may set the time other than the time when the second UE is in the dormant state. It is determined as the time when the second UE is in the active state.

Optionally, the first UE may determine, according to the DRX period, the DRX start offset, and the duration of the active state in each DRX period, in the DRX configuration information of the second UE, the time when the second UE is in an active state.

In a specific implementation process, the first UE may send a signal during the active state of the second UE in order to establish a D2D communication connection with the second UE or enable the second UE to successfully receive the signal sent by the first UE. The active state time here is specifically offset from the DRX cycle (DRX Cycle) and DRX start.

( drxStartOffset ) is related to the three parameters of the active state duration in each DRX cycle. The drxStartOffset may be used to determine the start time of the DRX, that is, the start time when the UE enters the active state; it is specifically used to indicate that the UE starts the duration timer in the Nth (N is a non-negative integer) subframe.

( On-duration Timer ), enters the active state. After determining the start time of the second UE to enter the active state, the first UE may determine the duration of the active state of the second UE in each DRX Cycle in combination with the DRX Cycle and the active state duration.

If the first UE needs to communicate with multiple second UEs, and determines that the time of the multiple second UEs in the active state is different, the first UE may send in a set of times when the multiple second UEs are in an active state. signal. That is, as long as there is one second UE in an active state, the first UE transmits a signal when the second UE is in an active state, as shown in FIG. Or, the first UE determines a minimum duration period including a time when the plurality of second UEs are in an active state, and sends a signal within the minimum duration period, that is, the minimum duration period is a continuous period of time, except Including these multiple The time when the second UE is in the active state is further included, and the second UE is in the inactive state, as shown in FIG. 5.

S304: The first UE sends a signal to the second UE according to a D2D communication manner in a time that the second UE is in an active state.

In this step, the sending, by the first UE, the signal to the second UE includes: the first UE sending, to the second UE, a discovery signal for detecting, by the second UE, the first UE. Or transmitting communication information to the second UE. The communication information herein is communication information, such as voice communication information, file information, etc., transmitted to the second UE after the D2D communication connection is established between the first UE and the second UE.

In this step, the first UE may send a discovery signal in a time when the second UE is in an active state, so that the second UE detects the first UE, and initiates a D2D communication connection with the first UE; After the D2D communication connection is established with the second UE, the communication information is sent to the second UE in the time that the second UE is in the active state, so that the second UE successfully receives the communication information.

Corresponding to the above embodiments, the following embodiments of the present invention provide a signal transmission method based on the network side, and the specific implementation is similar to the foregoing embodiment, and the repeated description is not repeated.

As shown in FIG. 6, a flow chart of a signal transmission method in D2D communication provided by Embodiment 2 of the present invention includes the following contents:

S601: A request message that is sent by the first UE that is received by the first UE to obtain the discontinuous reception period DRX configuration information of the second UE.

S602: The base station sends the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine that the second UE is in an active state, and according to the determining The time when the second UE is in an active state sends a signal to the second UE.

Before the step S602, the method may further include:

After determining that the base station serving the second UE is a base station different from the base station, the base station sends a request message for acquiring the DRX configuration information of the second UE to the base station serving the second UE, and receives the service request. The DRX configuration information of the second UE sent by the base station of the second UE.

The signal transmission provided in the first embodiment and the second embodiment will be described below through a specific embodiment. The method of the input method.

As shown in FIG. 7, a flow chart of a signal transmission method in D2D communication provided in Embodiment 3 of the present invention includes the following contents:

S701: The first UE sends a request message for acquiring DRX configuration information of the second UE to the base station serving the first UE.

S702: The base station serving the first UE determines whether it is the service object of the second UE, and after determining that it is the service object of the second UE, sending the DRX configuration information configured for the second UE. Giving the first UE, otherwise proceeding to step S703.

S703: The base station serving the first UE sends a request for acquiring the DRX configuration information of the second UE to the base station serving the second UE after determining that the base station serving the second UE is a base station different from the second UE. And receiving, by the base station, the DRX configuration information of the second UE sent by the base station serving the second UE.

S704: After receiving the DRX configuration information of the second UE sent by the base station serving the first UE, the first UE is configured according to the DRX period, the DRX start offset, and each DRX period included in the DRX configuration information of the second UE. The internal active state duration is determined, and the time when the second UE is in the active state is determined.

S705: The first UE sends a signal to the second UE according to the D2D communication mode in a time that the second UE is in an active state.

The following describes the manner in which another UE of the present invention acquires DRX configuration information of other UEs. FIG. 8 is a flowchart of a signal transmission method in D2D communication according to Embodiment 4 of the present invention. In this embodiment, the first UE is configured according to the DRX configuration information that is sent by the base station serving the first UE and the application identifier of the UE. The correspondence between the (Application ID) or the group ID (Group ID) determines the DRX configuration information of the second UE, including the following steps:

S801: The first UE receives a correspondence between the DRX configuration information sent by the base station serving the first UE and the Application ID or the Group ID of the UE.

In this step, the base station may configure the mapping between the DRX configuration information and the Application ID or the GroupID for the serving UE. The corresponding configuration of the corresponding relationship may be: First, directly sending different Application IDs or GroupIDs. Corresponding DRX configuration letters Second, the function relationship of the DRX configuration information about the Application ID or the GroupID is issued. For the embodiment of the first correspondence, for example, the application ID of the voice call is 100, and the DRX configuration information corresponding to the Application ID includes: a DRX cycle (DRX Cycle) of 200 subframes, and a DRX start offset (drxStartOffset) of 1 Subframes (ie, the second UE enters the DRX mode after the current one subframe), and the active state duration is 30 subframes; for the second correspondence, for example, DRX Cycle=Group ID mode (modulo) ) Cell ID, which is the Group ID divided by the Cell ID, and the remainder; Active state duration = (Group ID+Cell ID) modulolO, drxStartOffset= Group ID modulo DRX Cycle„

S802: The first UE determines DRX configuration information of the second UE according to the correspondence and the Application ID or the Group ID of the second UE.

S803: The first UE determines, according to the DRX configuration information of the second UE, a time when the second UE is in an active state.

S804: The first UE sends a signal to the second UE according to a D2D communication manner in a time that the second UE is in an active state.

Here, the sending, by the first UE, the signal to the second UE includes: sending, by the first UE, a discovery signal for detecting, by the second UE, the first UE, or The second UE transmits the communication information. The communication information here is communication information, such as voice communication information, file information, etc., transmitted to the second UE after the D2D communication connection is established between the first UE and the second UE.

In the embodiment of the present invention, the base station serving the first UE may use the form of the foregoing delivery correspondence to indicate that the serving UE determines the DRX configuration information of itself and other UEs; therefore, the first UE receives the service. After the corresponding relationship sent by the base station of the first UE, the DRX configuration information of the second UE may be determined, and the DRX configuration information of the second UE may be determined. The DRX configuration information needs to include a DRX cycle, a DRX start offset, and an active state duration in each DRX cycle. According to the configuration information, the first UE may determine that the second UE is in an active state, and the second UE is in an active state. At the time, the first UE may send a discovery signal or send communication information to the second UE.

In a specific implementation, if the first UE receives the application ID of multiple applications and the DRX The corresponding information of the information is not determined, and the DRX configuration information corresponding to the application ID of the second UE is determined, and the second UE corresponding to each application is determined to be activated according to the application ID of each application. a time in which a signal is transmitted in a set of times when the second UE corresponding to each application is in an active state; or, the first UE determines a minimum duration period including a time when the second UE corresponding to each application is in an active state, The signal is sent during the minimum duration. The first UE is in the same group as the second UE that needs to communicate, that is, the group IDs of the first UE and the second UE are the same, and if the corresponding relationship is the correspondence between the group ID and the DRX configuration information, The first UE may directly determine the group ID of the second UE. In fact, at this time, the time that the first UE can directly consider that the second UE is in the active state is the same as the time when the first UE is in the active state, that is, The first UE may send a signal to the second UE in a time when it is in an active state.

In a specific implementation, in the correspondence between the base station and the group ID, the DRX period, the DRX start offset, and the duration of the active state in each DRX cycle are respectively associated with the Application ID or the GroupID. The timing relationship between the DRX InactivityTimer (DRX InactivityTimer) and the DRX RetransmissionTimer (Time Range) and the Application ID or GroupID may be respectively included; the first UE monitors and receives according to the two parameters. data. The specific meaning of the DRX InactivityTimer is: the duration of the active state after the UE successfully decodes the initially transmitted PDCCH. The specific meaning of the DRX RetransmissionTimer is: The length of time that the UE expects to receive downlink retransmission data in the retransmission mode.

As shown in FIG. 9, a flow chart of a signal transmission method in D2D communication provided in Embodiment 5 of the present invention includes the following steps:

S901: The base station determines a correspondence between the DRX configuration information and the UE's Application ID or Group ID.

In this step, the determining, by the base station, the correspondence between the DRX configuration information and the Application ID or the Group ID of the UE, specifically includes: The base station configures a correspondence between the DRX configuration information and an Application ID or a Group ID of each UE served by the base station, and

In a specific implementation, different base stations may be independent of each other when configuring the mapping between the DRX configuration information and the application ID or the group ID for the respective serving UEs, and may share the corresponding relationship of the respective configurations. The base station may also configure the corresponding relationship in a negotiated manner. For example, after the base station serving the first UE configures the corresponding relationship, the corresponding relationship is sent to other base stations, and other base stations directly use the same. The base station serving the first UE sends the corresponding relationship to other base stations after configuring the corresponding relationship, and the other base station according to the current communication state of the UE served by the base station, such as load information. Then, the corresponding relationship is modified and sent to the base station serving the first UE, and the base station serving the first UE and the other base station use the modified corresponding relationship.

S902: The base station sends the determined correspondence to the first UE served; the correspondence is used by the first UE to determine DRX configuration information of the second UE, where the DRX configuration information is used by the The first UE determines a time when the second UE is in an active state, and sends a signal to the second UE according to the determined time that the second UE is in an active state.

Optionally, before step S902, the method further includes: receiving, by the base station, request information that is sent by the first UE to obtain the corresponding relationship.

In the above step, the base station may send the corresponding relationship to the first UE after receiving the request information of the corresponding relationship that is sent by the first UE.

The flow of the signal transmission method provided in the above fourth embodiment and the fifth embodiment will be described below by way of a specific embodiment.

As shown in FIG. 10, a flow chart of a signal transmission method in D2D communication provided in Embodiment 6 of the present invention includes the following steps:

S1001: The base station that serves the first UE configures the correspondence between the DRX configuration information and the Application ID or the Group ID of each UE of the service, and acquires the DRX configuration information configured by the other base station. Correspondence between the application ID and the Group ID of each UE served by the other base stations. S1002: The base station serving the first UE sends the corresponding relationship to the first UE.

S1003: After receiving the corresponding relationship sent by the base station serving the first UE, the first UE determines the second according to the correspondence relationship and the Application ID or Group ID of the second UE.

UE DRX configuration information;

S1004: The first UE determines, according to the DRX cycle included in the DRX configuration information of the second UE, the DRX start offset drxStartOffset, and the duration of the active state in each DRX cycle, determining the time when the second UE is in the active state;

S1005: The first UE sends a signal to the second UE in a time that the second UE is in an active state. In a specific implementation, the correspondence between the DRX configuration information and the Application ID or the GroupID may also be pre-defined in the protocol. When the first UE needs to communicate with the second UE, the first UE may directly determine the second UE according to the correspondence. The DRX configuration information is sent according to the determined DRX configuration information of the second UE.

As shown in FIG. 11, a flow chart of a signal transmission method in D2D communication provided in Embodiment 7 of the present invention includes the following steps.

S1101: The first UE determines DRX configuration information of the second UE according to the correspondence between the preset DRX configuration information and the application identifier (Application ID) or the group identifier (Group ID) of the UE.

S1102: The first UE sends a signal to the second UE according to the determined DRX configuration information of the second UE.

Based on the same inventive concept, the embodiment of the present invention further provides a signal transmission apparatus in D2D communication corresponding to a signal transmission method in D2D communication, and the principle of solving the problem by the apparatus and the signal in the D2D communication of the embodiment of the present invention. The transmission method is similar, so the implementation of the device can be referred to the implementation of the method, and the repeated description will not be repeated.

As shown in FIG. 12, a schematic diagram of a structure of a signal transmission apparatus in D2D communication according to Embodiment 8 of the present invention includes:

The obtaining module 121 is configured to acquire, for the first UE, a continuity receiving period DRX of the second UE. Set information

The determining module 122 is configured to determine, according to the DRX configuration information of the second UE acquired by the obtaining module 121, a time when the second UE is in an active state;

The sending module 123 is configured to send a signal to the second UE according to a D2D communication manner in a time when the second UE determined by the determining module 122 is in an active state.

Optionally, the obtaining module 121 is specifically configured to:

Sending a request message to the base station serving the first UE, and receiving the discontinuous reception period DRX configuration information of the second UE sent by the base station, where the DRX configuration information of the second UE is determined according to the request message.

Optionally, the obtaining module 121 is specifically configured to:

Receiving, by the base station serving the first UE, a correspondence between the discontinuous reception period DRX configuration information and the application identifier Application ID or the group identifier Group ID of the UE; according to the correspondence relationship and the Application ID or the Group ID of the second UE, Determining the DRX configuration information of the second UE. Optionally, the sending module 123 is specifically configured to:

Optionally, the determining module 122 is specifically configured to:

Determining, according to the DRX period, the DRX start offset, and the duration of the active state in each DRX period, in the DRX configuration information of the second UE, determining the time when the second UE is in an active state.

As shown in FIG. 13, a schematic diagram of a structure of a signal transmission apparatus in D2D communication provided in Embodiment 9 of the present invention includes:

The receiving module 131 is configured to receive, by the first user equipment UE, the service, a request message for acquiring discontinuous reception period DRX configuration information of the second UE;

The sending module 132 is configured to send, according to the request message received by the receiving module 131, the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine the And a time when the second UE is in an active state, and sending a signal to the second UE according to the determined time that the second UE is in an active state. Optionally, the sending module 132 is further configured to: before sending the DRX configuration information of the second UE to the first UE, send, to the base station serving the second UE, the second UE. Request message of DRX configuration information;

The receiving module 131 is further configured to receive DRX configuration information of the second UE that is sent by the base station that serves the second UE.

As shown in FIG. 14, a schematic diagram of a structure of a signal transmission apparatus in D2D communication provided in Embodiment 10 of the present invention includes:

The determining module 141 is configured to determine a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier Application ID or the group identifier Group ID of the user equipment UE;

The sending module 142 is configured to send the corresponding relationship determined by the determining module 141 to the first UE served by the base station, where the correspondence is used by the first UE to determine DRX configuration information of the second UE, where The DRX configuration information is used by the first UE to determine when the second UE is in an active state, and send a signal to the second UE according to the determined time that the second UE is in an active state.

Optionally, the determining module 141 is specifically configured to:

Configuring a correspondence between the DRX configuration information and an Application ID or a Group ID of each UE served by the base station, and

Optionally, the device further includes:

The receiving module 143 is configured to receive the request information that is sent by the first UE and obtain the corresponding relationship, before the sending module sends the corresponding relationship to the first UE that is in the service.

As shown in FIG. 15, a schematic structural diagram of a signal transmission apparatus in D2D communication provided in Embodiment 11 of the present invention includes:

The receiver 151 is configured to acquire, for the first user equipment UE, continuity receiving period DRX configuration information of the second UE;

The processor 152 is configured to determine, according to the DRX configuration information of the second UE acquired by the receiver 151, that the second UE is in an active state; The transmitter 153 is configured to send a signal to the second UE according to a D2D communication manner in a time that the second UE determined by the processor 152 is in an active state.

Optionally, the transmitter 153 is further configured to send a request message to the base station serving the first UE. The receiver 151 is specifically configured to: receive the discontinuous reception period DRX configuration information of the second UE sent by the base station. The DRX configuration information of the second UE is determined according to the request message sent by the sender.

Optionally, the receiver 151 is specifically configured to: receive a correspondence between a discontinuous reception period DRX configuration information sent by a base station serving the first UE, and an application identifier Application ID or a group identifier Group ID of the UE; Determining the DRX configuration information of the second UE by using the correspondence and the Application ID or the Group ID of the second UE;

Optionally, the transmitter 153 is specifically configured to:

Optionally, the processor 152 is specifically configured to:

FIG. 16 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 12 of the present invention, including:

a receiver 161, configured to receive, by the first user equipment UE, the service request message for acquiring the discontinuous reception period DRX configuration information of the second UE;

The transmitter 162 is configured to send, according to the request message received by the receiver 161, the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine the And a time when the second UE is in an active state, and sending a signal to the second UE according to the determined time that the second UE is in an active state.

Optionally, the transmitter 162 is further configured to: before sending the DRX configuration information of the second UE to the first UE, send, to the base station serving the second UE, the second UE. Request message of DRX configuration information; The receiver 161 is further configured to receive DRX configuration information of the second UE that is sent by a base station that serves the second UE.

FIG. 17 is a schematic structural diagram of a signal transmission apparatus in D2D communication according to Embodiment 13 of the present invention, including:

The processor 171 is configured to determine a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier Application ID or the group identifier Group ID of the user equipment UE;

The transmitter 172 is configured to send the corresponding relationship determined by the processor 171 to the first UE served by the base station, where the correspondence is used by the first UE to determine DRX configuration information of the second UE, where The DRX configuration information is used by the first UE to determine when the second UE is in an active state, and send a signal to the second UE according to the determined time that the second UE is in an active state.

Optionally, the processor 171 is specifically configured to:

Optionally, the device further includes:

The receiver 173 is configured to receive the request information that is sent by the first UE to obtain the corresponding relationship, before the sending, by the sending, the corresponding relationship to the serving first UE.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a general purpose computer, a special purpose computer, An embedded processor or processor of another programmable data processing device to generate a machine such that instructions executed by a processor of a computer or other programmable data processing device are generated for implementation in a flow or a flow of flowcharts and/or Or a block diagram of a device in a box or a function specified in a plurality of boxes.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A device-to-device signal transmission device in D2D communication, characterized in that the device comprises:

An acquiring module, configured to acquire, for the first UE, a continuity receiving period DRX configuration information of the second UE;

The apparatus according to claim 1, wherein the acquiring module is specifically configured to: send a request message to a base station serving the first UE, and receive a discontinuous reception period of the second UE sent by the base station The DRX configuration information, the DRX configuration information of the second UE is determined according to the request message.

The apparatus according to claim 1, wherein the acquiring module is specifically configured to: receive a discontinuous reception period DRX configuration information delivered by a base station serving the first UE, and an application identifier Application ID or a group of the UE. Determining a correspondence between the group IDs; determining DRX configuration information of the second UE according to the correspondence relationship and the Application ID or the Group ID of the second UE;

The device according to any one of claims 1 to 3, wherein the sending module is specifically used for:

The device according to any one of claims 1 to 4, wherein the determining module is specifically used for:

6. A device-to-device D2D communication signal transmission device, characterized in that the device Includes:

a receiving module, configured to receive, by the first user equipment UE, the request message for acquiring the discontinuous reception period DRX configuration information of the second UE;

a sending module, configured to send, according to the request message received by the receiving module, the DRX configuration information of the second UE to the first UE, where the DRX configuration information is used by the first UE to determine the second The time when the UE is in an active state, and sending a signal to the second UE according to the determined time that the second UE is in an active state.

The device according to claim 6, wherein the sending module is further configured to: before transmitting the DRX configuration information of the second UE to the first UE, to serve the second UE The base station sends a request message for acquiring the DRX configuration information of the second UE;

8. A device-to-device signal transmission device in D2D communication, characterized in that the device comprises:

a determining module, configured to determine a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier Application ID or the group identifier Group ID of the user equipment UE;

The device according to claim 8, wherein the determining module is specifically configured to: configure a correspondence between the DRX configuration information and an Application ID or a Group ID of each UE served by the base station, and

The device according to claim 8 or 9, wherein the device further comprises: a receiving module, configured to send, by the sending module, the corresponding relationship to the first UE of the service And receiving, by the first UE, request information for acquiring the correspondence.

11. A device to device signal transmission device in D2D communication, characterized in that the device comprises:

a receiver, configured to acquire, for the first user equipment UE, a continuity receiving period DRX configuration information of the second UE;

a processor, configured to determine, according to the DRX configuration information of the second UE acquired by the receiver, a time when the second UE is in an active state;

The device according to claim 11, wherein the transmitter is further configured to send a request message to a base station serving the first UE;

The apparatus according to claim 11, wherein the receiver is specifically configured to: receive a discontinuous reception period DRX configuration information delivered by a base station serving the first UE, and an application identifier Application ID or a group of the UE. Determining a correspondence between the group IDs; determining DRX configuration information of the second UE according to the correspondence relationship and the Application ID or the Group ID of the second UE;

The device according to any one of claims 11 to 13, wherein the transmitter is specifically configured to:

The device according to any one of claims 11 to 14, wherein the processor is specifically configured to:

16. A signal transmission device for device-to-device D2D communication, characterized in that the device Includes:

a receiver, configured to receive, by the first user equipment UE, the request message for acquiring the discontinuous reception period DRX configuration information of the second UE;

The device according to claim 16, wherein the transmitter is further configured to: before transmitting the DRX configuration information of the second UE to the first UE, to serve the second UE The base station sends a request message for acquiring the DRX configuration information of the second UE;

18. A device to device signal transmission device in D2D communication, characterized in that the device comprises:

a processor, configured to determine a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier of the user equipment UE or the group identifier Group ID;

The device according to claim 18, wherein the processor is specifically configured to: configure a correspondence between the DRX configuration information and an Application ID or a Group ID of each UE served by the base station, and

The device according to claim 18 or 19, wherein the device further comprises: a receiver, configured to send, before the transmitter, the corresponding relationship to the serving first UE, Receiving, by the first UE, request information for acquiring the correspondence relationship.

A device-to-device signal transmission method in D2D communication, characterized in that the method comprises:

The first user equipment UE acquires the discontinuous reception period DRX configuration information of the second UE; the first UE determines, according to the DRX configuration information of the second UE, the time when the second UE is in an active state;

The method of claim 21, wherein the acquiring, by the first UE, the DRX configuration information of the second UE includes:

The method according to any one of claims 21 to 23, wherein the sending, by the first UE, a signal to the second UE based on a D2D communication manner includes:

The method according to any one of claims 21 to 24, wherein the determining, by the first UE, the time that the second UE is in an active state according to the DRX configuration information of the second UE, includes: Determining, by the first UE, that the second UE is active according to a DRX cycle, a DRX start offset, and an active state duration in each DRX cycle of the DRX configuration information of the second UE. Live time.

Receiving, by the base station, a request message sent by the first user equipment UE that is served by the base station, for acquiring the discontinuous reception period DRX configuration information of the second UE;

The method according to claim 26, wherein before the sending, by the base station, the DRX configuration information of the second UE to the first UE, the method further includes:

28. A device-to-device signal transmission method in D2D communication, characterized in that the method comprises:

Determining, by the base station, a correspondence between the DRX configuration information of the discontinuous reception period and the application identifier Application ID or the group identifier Group ID of the user equipment UE;

The method according to claim 28, wherein the determining, by the base station, the correspondence between the DRX configuration information and the Application ID or the Group ID of the UE, including:

The method according to claim 28 or 29, wherein, before the base station sends the determined correspondence to the first UE of the service, the method further includes: