TW201404068A - Method for performing hybrid automatic repeat request, base station and mobile device thereof - Google Patents

Abstract

A method for performing hybrid automatic repeat request (HARQ), a base station (BS), and a mobile device are provided. The method for performing HARQ includes the following steps. Radio resources are configured by the BS and whether to perform a device-to-device (D2D) communication is determined. When the D2D communication is performed, a first resource configuration message is transmitted from the BS to first and second mobile devices, such that the first mobile device, served as a transmitter, transmits a data packet to the second mobile device, served as a receiver. A HARQ feedback packet transmitted from the second mobile device is received by the BS. When the HARQ feedback packet is NACK, the BS selects to retain the original radio resource or to transmit a second resource configuration message to the first and second mobile devices.

Description

Method for performing hybrid automatic repeat request and its base station and action Device

The present disclosure is directed to a method of performing a hybrid automatic repeat request and a base station and mobile device using the same.

With the growth of mobile broadband applications and the huge data transmission requirements of terminals, the allocation of radio spectrum resources has become increasingly scarce, and the trend of increasing the available bandwidth from the spatial domain has gradually taken shape. Therefore, the 3rd Generation Partnership Project (3GPP) has begun to study Device-to-Device communication (D2D) in Advanced Term Evolution-Advanced (LTE-A). The feasibility and development of system requirements. D2D communication is under the control of a wireless communication system, allowing the mobile device to use the licensed band or the Heterogeneous network to use the license-free band after proximity discovery. (Unlicensed band), such as Wireless Local Area Networks (WLAN), a new technology for direct communication. D2D Communication can increase the spectrum efficiency of the system, reduce the transmission power of the mobile device, and solve the problem of lack of spectrum resources of the wireless communication system to a certain extent. In addition, the implementation of D2D communication technology can also meet the communication needs of neighboring areas in business applications and disaster relief, such as electronic leaflets and alarm systems.

FIG. 1 is a schematic diagram of an application scenario of D2D communication according to an exemplary embodiment. Referring to FIG. 1, the mobile devices UE1 and UE2 communicate with each other through an uplink and downlink communication connection established by the wireless communication system. As the mobile device UE1 slowly approaches the mobile device UE2, the network device moves the mobile devices UE1 and UE2. The communication connection between the two is switched to D2D communication to reduce the network offloading; as the two mobile devices UE1 and UE2 are slowly moving away, the network determines that the D2D communication cannot be maintained and then switches the communication to the existing one. The uplink and downlink communication connection.

In the application scenario shown in Figure 1, an important issue is highlighted: how to maintain the communication quality between mobile devices in the case where existing uplink and downlink communication links are switched to D2D communication. FIG. 2 is a timing diagram of an uplink and downlink communication flow according to an exemplary embodiment. Referring to FIG. 2, the base station eNB and the mobile device UE must first measure the wireless link, including channel quality, path loss, and Timing advance. The channel quality measurement result allows the base station eNB to optimize the spectrum usage efficiency of the system when allocating radio resources. The path loss measurement result allows the mobile device UE to calculate the used transmission power to transmit the data to the base station. The eNB, the correction of the early timing, allows the data transmitted by the mobile device UE to be received at the correct time point of the base station eNB after the Propagation delay.

After the measurement of the radio link is completed, the base station eNB configures the appropriate radio resource for the mobile device UE according to the measurement result, and transmits the result of the resource configuration and some control parameters to the mobile device UE. Since the condition of the channel may change rapidly with time due to factors such as the transmission environment and the moving speed, the base station dynamically and quickly allocates resources to the mobile device UE to adapt to changes in the status of the wireless link. Finally, in the process of data transmission, LTE continues the Hybrid Automatic Repeat ReQuest (HARQ) mechanism used in High Speed Packet Access (HSPA) technology to increase the reliability of data transmission. .

HARQ is a technology that combines feed-forward error correction (FEC) and automatic repeat request (ARQ). The main concept is to store useful information through failed transmission. Used later to increase the chances of success for the next retransmission. HARQ retransmission is divided into two modes: synchronous (Synchronous) and asynchronous (Asynchronous). Synchronous retransmission means that the timing of the HARQ retransmission (Timing) is determined in advance. When the receiving end fails to receive and returns a Negative Acknowledge (NACK), the transmitting end will arrange the sub-message in advance. The subframe uses the same radio resources for retransmission and does not need to be signaled by additional control signals. Conversely, asynchronous retransmission means that the timing of retransmission and the used radio resources can be dynamically changed by the control signal.

In order to maintain the communication quality of the mobile device under D2D communication, the D2D communication also needs to adopt the HARQ retransmission mechanism to increase the reliability of data transmission. However, the existing HARQ program only operates HARQ between the base station and a mobile device. sequence. Therefore, how to perform HARQ between the base station and the two mobile devices that want to perform D2D communication is an important issue to be solved.

The present disclosure provides a method for performing a HARQ retransmission mechanism for D2D communication, so that the D2D transmitting end and the D2D receiving end implement HARQ with the assistance of the base station to maintain D2D communication quality.

A method for performing a hybrid automatic repeat request, which is applicable to a base station in a wireless communication system, includes the following steps. The radio resources are configured by the base station, and it is determined whether or not to perform inter-device communication. When performing inter-device communication, the first resource configuration message is transmitted by the base station to the first and second mobile devices, so that the first mobile device as the transmitting end transmits the data packet according to the first resource configuration message to the second action as the receiving end. Device. The HARQ return packet from the second mobile device is received by the base station to determine whether the data packet has been successfully transmitted. When the HARQ return packet is a negative signal, the base station selects to reserve the radio resource configured by the first resource configuration message or transmit the second resource configuration message to the first and second mobile devices.

A base station of the present disclosure includes a transceiver and a processor. The transceiver is configured to transmit and receive wireless signals. The processor is coupled to the transceiver, configured to perform the steps of: configuring wireless resources used by the at least one mobile device; and transmitting the first resource configuration message to the first and second mobile devices when performing inter-device communication, So that the first mobile device as the transmitting end transmits the data packet according to the first resource configuration message to the second mobile device as the receiving end; receiving the second mobile device The HARQ return packet of the mobile device to determine whether the data packet has been successfully transmitted; and when the HARQ return packet is a negative signal, select to reserve the radio resource configured by the first resource configuration message or transmit the second resource configuration message to the first and the first Two mobile devices.

A method for performing a hybrid automatic repeat request, which is applicable to a first and a second mobile device for performing inter-device communication in a wireless communication system, comprising the steps of: monitoring the first and second mobile devices a first resource configuration message from the base station to determine whether to perform inter-device communication; when inter-device communication is performed, the first mobile device, which is instructed to be the transmitting end, transmits the data packet to the first mobile device according to the first resource configuration message. The second mobile device is instructed to be the receiving end; the second mobile device transmits the HARQ return packet to the base station to reply whether the data packet has been successfully received.

A mobile device of the present disclosure includes a transceiver and a processor. The transceiver is configured to transmit and receive wireless signals. The processor is coupled to the transceiver and configured to perform the steps of: receiving a first resource configuration message from the base station to determine whether to perform inter-device communication; and when the first resource configuration message indicates inter-device communication and transmitting Transmitting, according to the first resource allocation message, the radio resource transmission data packet to another mobile device; and when the first resource configuration message indicates inter-device communication and acting as the receiving end, according to the first resource configuration message The radio resource receives the data packet from another mobile device and transmits a HARQ return packet to the base station to reply whether the data packet has been successfully received.

Based on the above, the present disclosure provides a hybrid automatic repeat request The method enables the mobile device performing D2D communication to implement HARQ with the assistance of the base station to maintain the D2D communication quality.

The above described features and advantages of the present invention will be more apparent from the following description.

420, 620, 820‧‧‧D2D transmitter

430, 630, 830‧‧‧D2D receiving end

800‧‧‧Wireless communication system

801, 804, 807‧‧ ‧ processors

802, 805, 808‧‧‧A/D or D/A converter

803, 806, 809‧‧‧ transceivers

eNB, 410, 610, 810‧‧‧ base station

UE, UE1, UE2‧‧‧ mobile devices

S510~S550‧‧‧Steps for performing the method of asynchronous HARQ three-terminal communication

S710~S750‧‧‧Steps for performing synchronous HARQ three-terminal communication

Steps for the S910~S970‧‧‧ base station to implement three-terminal communication

FIG. 1 is a schematic diagram of an application scenario of D2D communication according to an exemplary embodiment.

FIG. 2 is a timing diagram of an uplink and downlink communication flow according to an exemplary embodiment.

FIG. 3A is a timing diagram of downlink communication using asynchronous HARQ according to an exemplary embodiment.

FIG. 3B is a timing diagram of uplink communication using synchronous HARQ according to an exemplary embodiment.

FIG. 4 is a timing diagram of performing asynchronous HARQ three-terminal communication by D2D communication according to the first exemplary embodiment of the present disclosure.

FIG. 5 is a flowchart of a method for performing asynchronous HARQ three-terminal communication by D2D communication according to the first exemplary embodiment of the disclosure.

FIG. 6 is a timing diagram of performing synchronous HARQ three-terminal communication by D2D communication according to a second exemplary embodiment of the present disclosure.

FIG. 7 is a diagram showing D2D communication execution according to a second exemplary embodiment of the present disclosure. A flow chart of the method of step HARQ three-terminal communication.

FIG. 8 is a block diagram of a wireless communication system according to an exemplary embodiment of the disclosure.

FIG. 9 is a flowchart of a method for a base station to perform three-terminal communication according to an exemplary embodiment of the disclosure.

It should be noted that in the LTE system, uplink/downlink communication (referred to as uplink and downlink communication) adopts synchronous/non-synchronous HARQ. That is to say, the mobile device must transmit synchronous data using synchronous HARQ, and the mobile device must use asynchronous HARQ.

FIG. 3A is a timing diagram of downlink communication using asynchronous HARQ according to an exemplary embodiment. Referring to FIG. 3A, the base station eNB transmits a resource configuration message to the mobile device UE through a physical downlink control channel (PDCCH). The mobile device UE receives the data packet in the same subframe. When the mobile device UE fails to receive, it automatically returns a Negative Acknowledge (NACK) to the base station eNB through a Physical Uplink Control Channel (PUCCH) in a predetermined timing. The base station eNB reconfigures the resources based on the dynamic scheduling, and transmits the new resource configuration information to the mobile device UE through the PDCCH. The mobile device UE re-receives the same data packet in the same subframe. The standard subscription timing in 3GPP LTE/LTE-A is 4 sub-frames.

FIG. 3B is a timing diagram of uplink communication using synchronous HARQ according to an exemplary embodiment. Referring to FIG. 3B, after the base station eNB transmits the resource configuration message to the mobile device UE through the PDCCH, the mobile device UE uploads the data packet to the base station eNB after the subscription sequence. When the base station eNB fails to receive, the base station eNB will report the NACK to the mobile device UE through the physical Hybrid-ARQ Indicator Channel (PHICH) in the previously scheduled subframe. The mobile device UE will use the same radio resource for retransmission in the previously arranged subframe, and no further control signal is needed.

In order to maintain the communication quality of the mobile device under D2D communication and reduce the complexity and cost of the communication connection switching, it is assumed in the following exemplary embodiments that all radio resources are transmitted by the base station through the physical downlink control channel (Physical Downlink Control Channel). , PDCCH) is configured dynamically and quickly. Under this premise, the disclosure provides a three-terminal communication method for realizing synchronous and asynchronous HARQ retransmission under the control of a base station for D2D communication. In order to make the above description of the disclosure clearer, the following examples are set forth as examples in which the disclosure can be implemented.

First exemplary embodiment

It should be noted that since the radio resources used for uplink and downlink communication and D2D communication are configured by the base station through the PDCCH, if the asynchronous HARQ is to be run for the D2D communication, the D2D transmitting end needs to receive the resource configuration message from the PDCCH. It is known to run synchronous HARQ to transmit uplink data to the base station, or to run asynchronous HARQ transmission data to the D2D receiving end.

In an exemplary embodiment, the base station may indicate that the DCI is for D2D communication by adding an indicator in a resource configuration message (ie, Downlink Control Information (DCI)) in the PDCCH. Resource configuration or resource configuration for general uplink and downlink communication. In another exemplary embodiment, the base station can perform resource configuration of D2D communication by using a Cell Radio Network Temporary Identifier (C-RNTI), which is a dedicated D2D communication, that is, configuring D2D communication. The DCI is transmitted through the PDCCH after being scrambled by the C-RNTI. Therefore, in addition to searching for DCI with the original C-RNTI, the D2D transmitting end and the D2D receiving end must also search for DCI by using the D-D communication-specific C-RNTI.

FIG. 4 is a timing diagram of performing asynchronous HARQ three-terminal communication by D2D communication according to the first exemplary embodiment of the present disclosure. FIG. 5 is a flowchart of a method for performing asynchronous HARQ three-terminal communication by D2D communication according to the first exemplary embodiment of the disclosure. Please refer to FIG. 4 and FIG. 5 below.

First, in step S510, the base station 410 configures radio resources, and transmits a resource configuration message (i.e., DCI) for performing D2D communication to the D2D transmitting end 420 and the D2D receiving end 430 by the PDCCH (step S510). The base station 410 can indicate that the DCI is a resource configuration for D2D communication, for example, by adding an indicator to the DCI in the PDCCH.

In this embodiment, the DCI transmitted by the base station 410 includes a transmitting end DCI and a receiving end DCI, wherein the transmitting end DCI may be the same or different from the receiving end DCI. Referring to FIG. 4, the base station 410 transmits the transmitting end by using the PDCCH at time t1. The DCI is sent to the D2D transmitter 420. Then, the base station 410 transmits the receiving end DCI to the D2D receiving end 430 by using the PDCCH at time t2.

Next, after receiving the resource configuration message, the D2D transmitting end and the D2D receiving end respectively complete a data packet transmission according to the indication of the resource configuration message (step S520). In detail, at time t3, the D2D transmitting terminal 420 transmits a data packet to the D2D receiving terminal 430. The time difference between time t1 and time t3 is 4 subframes; time t2 and time t3 belong to the same subframe. Accordingly, the time configuration in which the base station 410 transmits the transmitting end DCI and the receiving end DCI, respectively, conforms to the specifications of 3GPP LTE/LTE-A. In another embodiment, the base station 410 can also transmit the same DCI to the D2D transmit end 420 and the D2D receive end 430 simultaneously. Accordingly, the method for transmitting the DCI to the D2D transmitting end and the D2D receiving end by the base station of the present disclosure is not limited to the above.

The D2D transmitting end 420 does not expect to receive any HARQ return packet after completing the data transmission, but directly monitors the PDCCH and waits for the next resource configuration message of the base station 410.

In step S530, after the D2D receiving end 430 receives the data packet according to the indication of the resource configuration message, the D2D receiving end 430 transmits the HARQ return packet to the base station 410 through the PUCCH. The HARQ return packet includes an Acknowledge (ACK) signal and a Negative Acknowledge (NACK) signal. If the data packet is successfully received, the D2D receiving end 430 returns an ACK signal to the base station 410; if the data packet reception fails, the D2D receiving end 430 returns a NACK signal to the base station 410.

In step S540, the base station determines whether a NACK signal is received, and if not, It means the completion of the transfer of this data packet. If yes, proceeding to step S550, the base station 410 reconfigures the resource based on the dynamic scheduling, and transmits the new resource configuration message (ie, the second resource configuration message) to the D2D transmitting end 420 and the D2D receiving end 430 through the PDCCH. . The method for transmitting the new resource configuration message by the base station is as described in step S510, and therefore is not described herein.

In addition, since all data transmission and retransmission must be dynamically configured by the base station 410 through the PDCCH under the asynchronous HARQ, it can be indicated by the new data in the DCI of the PDCCH (New Data Indicator, The NDI) field tells the D2D transmitter 420 and the D2D receiver 430 whether to perform a new data packet transmission or an old data packet retransmission. If there is still a next data packet to be transmitted, the base station 410 continues to perform resource configuration for the next data packet through the PDCCH.

Second exemplary embodiment

The same as asynchronous HARQ, if you want to run synchronous HARQ for D2D communication, you need to let the D2D receiver know that it wants to run asynchronous HARQ to receive downlink data from the base station when it receives the resource configuration message, or to run synchronous HARQ. The D2D transmitter receives the data. The base station can also indicate by adding an indicator or a dedicated C-RNTI to the resource configuration message (ie, DCI).

FIG. 6 is a timing diagram of performing synchronous HARQ three-terminal communication by D2D communication according to a second exemplary embodiment of the present disclosure. FIG. 7 is a flowchart of a method for performing synchronous HARQ three-terminal communication in D2D communication according to a second exemplary embodiment of the disclosure. Please refer to FIG. 6 and FIG. 7 below.

First, in step S710, the base station 610 configures radio resources and borrows A resource configuration message (i.e., DCI) configured for resource allocation for D2D communication by the PDCCH is transmitted to the D2D transmitting end 620 and the D2D receiving end 630 (step S710). In this embodiment, the DCI transmitted by the base station 610 includes a transmitting end DCI and a receiving end DCI, wherein the transmitting end DCI may be the same or different from the receiving end DCI. Referring to FIG. 6, the base station 610 first transmits the transmitting end DCI to the D2D transmitting end 620 by using the PDCCH at time t4. Then, the base station 410 transmits the receiving end DCI to the D2D receiving end 630 by using the PDCCH at time t5.

Next, after receiving the resource configuration message, the D2D transmitting end and the D2D receiving end respectively complete a data packet transmission according to the instruction of the DCI (step S720). At time t6, the D2D transmitting end 620 transmits a data packet to the D2D receiving end 630. The time difference between time t4 and time t6 is 4 subframes; time t5 and time t6 belong to the same subframe.

In an embodiment, after receiving the data packet, the D2D receiving end 630 performs a Cyclic Redundancy Check (CRC), and transmits a HARQ return packet (ACK/NACK signal) through the PUCCH in a predetermined timing according to the check result. To the base station 610.

Because the synchronous HARQ is running, in addition to the base station 610, it can know whether to reserve the pre-arranged radio resources for HARQ automatic retransmission through the ACK/NACK signal of the reply, and the D2D transmitting end 620 also needs to reply through the ACK. /NACK signal to know if you need to drive automatic data retransmission. In detail, the difference between this embodiment and the foregoing embodiment is that the D2D transmitting end 620 in the synchronous HARQ must actively receive the D2D receiving end 630 and reply to the PUCCH. The HARQ return packet of the base station 610 (step S730). That is to say, the D2D receiving end 630 does not reply the ACK/NACK signal to the D2D transmitting end 620, but the D2D transmitting end 620 itself actively goes to the PUCCH to monitor and receive the ACK or NACK signal transmitted by the D2D receiving end 630.

As described in step S750, if the D2D receiving end 630 replies as a NACK signal, the base station 610 automatically retains the original radio resource, and the D2D transmitting end 620 automatically retransmits the data packet in the pre-arranged subframe (predetermined timing). And the D2D receiving end 630 automatically re-receives the data packet.

Since the ACK/NACK signal replied by the D2D receiving end 630 on the PUCCH is targeted by the base station 610, the D2D transmitting end 620 may have a distance to the base station for various reasons (such as the distance between the D2D transmitting end 620 and the D2D receiving end 630). The distance between 610 and D2D receiving end 630 is further away) and the ACK/NACK signal cannot be received. At this time, unlike the HARQ in which the uplink and downlink communication operations are normal, when the D2D transmitting end 620 cannot receive the HARQ return packet, the D2D transmitting end 620 presets that the data has been successfully transmitted (the existing HARQ cannot be received by the transmitting terminal). When returning the packet, the transmitting end will preset the data to be unsuccessfully transmitted, and will not drive the automatic data retransmission, so as to prevent the base station 610 from thinking that the data has been successfully transmitted without retaining the radio resources, but the D2D transmitting end 620 believes that the data is unsuccessful. Transfer and drive automatic data retransmission.

In the above disclosure, in the disclosure, the base station transmits DCI to a D2D transmitting end and a D2D receiving end through the PDCCH, and instructs the D2D transmitting end to transmit a HARQ data packet to the D2D receiving end. Received at this D2D receiver After the HARQ data packet is encapsulated, a HARQ return packet is transmitted to the base station through the PUCCH, for example, an ACK signal or a NACK signal. When the base station receives the HARQ return packet as a NACK, the base station reserves the original radio resource, so that the D2D transmitter automatically retransmits the HARQ data packet to the D2D receiver, or allocates a new radio resource through the PDCCH. Retransmitting the DCI to the D2D transmitting end and the D2D receiving end, instructing the D2D transmitting end to retransmit the HARQ data packet to the D2D receiving end. Accordingly, the present disclosure provides a mechanism for the D2D transmitting end and the D2D receiving end to implement HARQ with the assistance of the base station to maintain D2D communication quality.

FIG. 8 is a block diagram of a wireless communication system according to an exemplary embodiment of the disclosure. Referring to FIG. 8, the wireless communication system 800 includes a base station 810 adopting the 3GPP Advanced Term Evolution Advanded (LTE-Advanced) standard, and a D2D transmitting end (ie, the first mobile device) 820 and D2D that perform D2D communication. Receiver (ie, second mobile device) 830.

The base station 810 includes at least a transceiver 801, an analog to digital (A/D)/digital to analog (D/A) converter 802, and a processor 803. The transceiver 803 is configured to wirelessly transmit downlink signals and/or receive uplink signals. Transceiver 803 can also perform operations such as low noise amplification, impedance matching, mixing, up or down conversion, filtering, amplification, and the like. The transceiver 803 also includes an antenna unit. Analog to digital (A/D)/digital to analog (D/A) converter 802 is configured to convert from analog signal format to digital signal format during uplink signal processing and from digital signal during downlink signal processing The signal is converted to an analog signal.

The processor 801 is configured to process the digital signal and perform the HARQ method as shown in FIG. 9: configuring a radio resource by the PDCCH (step S910), and determining whether to perform D2D communication (step S920). If not, the general uplink and downlink communication is performed (step S930), that is, the downlink communication shown in FIG. 3A and the uplink communication shown in FIG. 3B are performed. When inter-device communication is performed, the first resource configuration message is transmitted to the D2D transmitting end and the D2D receiving end (step S940). A HARQ return packet transmitted from the D2D receiving end on the PUCCH is received (step S950). It is judged whether or not the data packet has been successfully transmitted (step S960). If not, the radio resource configured by the first resource configuration message is reserved or the second resource configuration message is transmitted to the D2D transmitting end and the D2D receiving end (step S970). Thereafter, the process returns to step S950 until the data packet is successfully transmitted.

The D2D transmitting end 820 and the D2D receiving end 830 also include at least a transceiver (806, 809), an analog to digital (A/D)/digital to analog (D/A) converter (805, 808), and a processor (804, 807). The processor (804, 807) is configured to process the digital signal and perform the following HARQ method: receiving a first resource configuration message from the base station to determine whether to perform inter-device communication. When the first resource configuration message indicates inter-device communication and acts as a D2D transmitting end, the radio resource allocation data packet allocated according to the first resource configuration message is sent to the D2D receiving end. When the first resource configuration message indicates inter-device communication and serves as the D2D receiving end, the radio resource allocated according to the first resource configuration message receives the data packet from the D2D transmitting end, and transmits the HARQ return packet to the base station to reply to the data packet. Has it been successfully received.

In summary, the method for performing the hybrid automatic repeat request provided by the present disclosure enables the mobile device (the D2D transmitting end and the D2D receiving end) to implement the HARQ retransmission mechanism of the three-party communication with the assistance of the base station, thereby increasing the data. Transmitting reliability to maintain D2D communication quality.

The present disclosure has been described above by way of example embodiments, and is not intended to limit the scope of the disclosure, and it is possible to make a few changes and refinements without departing from the spirit and scope of the disclosure. Therefore, the scope of protection disclosed herein is subject to the definition of the scope of the appended patent application.

Steps for the S910~S970‧‧‧ base station to implement three-terminal communication

Claims (41)

A method for performing a Hybrid Automatic Repeat ReQuest (HARQ), which is applicable to a base station in a wireless communication system, comprising: configuring a radio resource by the base station, and determining whether to perform an inter-device communication When the inter-device communication is performed, the first resource configuration message is sent by the base station to a first mobile device and a second mobile device, so that the first mobile device as a transmitting end transmits a message according to the first resource configuration message. The data packet is sent to the second mobile device as a receiving end; the base station receives a HARQ return packet from the second mobile device to determine whether the data packet has been successfully transmitted; and when the HARQ return packet is a negative signal And the base station selects to reserve the radio resource configured by the first resource configuration message or transmit the second resource configuration message to the first and second mobile devices. The method for performing a hybrid automatic repeat request according to claim 1, wherein the step of transmitting, by the base station, the first resource configuration message to the first mobile device and the second mobile device comprises: And transmitting the first resource configuration message to the first and second mobile devices simultaneously. The method for performing a hybrid automatic repeat request according to claim 1, wherein the step of transmitting the first resource configuration message to the first mobile device by the base station comprises: After the base station transmits a transmission resource configuration message to the first mobile device, the base station transmits a receiving resource configuration message to the second mobile device, where the first resource configuration message includes the transmitting end The resource configuration message and the receiving resource configuration message, and the transmitting resource configuration message is the same or different from the receiving resource configuration message. The method for performing a hybrid automatic repeat request according to claim 1, wherein the base station transmits the first and second resource configuration messages through a physical downlink control channel. The method for performing a hybrid automatic repeat request according to claim 4, wherein the base station further adds an indicator to the first and second resource configuration messages to indicate the configured wireless The resource is configured for resource allocation between the devices or for uplink and downlink communication. The method for performing a hybrid automatic repeat request according to claim 4, wherein the transmitting, by the base station, the first resource configuration message or the second resource configuration message further comprises: The temporary identity of a base station radio network disrupts the first or second resource configuration message. The method for performing a hybrid automatic repeat request according to claim 1, wherein the method for receiving, by the base station, the HARQ return packet from the receiving end comprises: receiving, by the base station, a physical uplink control channel The HARQ return packet of the second mobile device as the receiving end. The method for performing a hybrid automatic repeat request according to claim 1, wherein the base station reserves the first resource configuration message when the HARQ return packet is the negative signal and performs a synchronous HARQ retransmission. Configuring the wireless resource to cause the first mobile device to automatically retransmit the data packet to the second mobile device. The method for performing a hybrid automatic repeat request according to claim 1, wherein the base station simultaneously transmits the second resource configuration when the HARQ return packet is the negative signal and performs an asynchronous HARQ retransmission. Sending the message to the first mobile device and the second mobile device, so that the first mobile device retransmits the data packet to the second mobile device according to the second resource configuration message. The method for performing a hybrid automatic repeat request according to claim 1, wherein when the HARQ return packet is the denial signal and an asynchronous HARQ retransmission is performed, the base station first transmits a transport resource configuration. After the message is sent to the first mobile device, a receiving resource configuration message is sent to the second mobile device, so that the first mobile device retransmits the data packet to the second mobile device according to the transmitting resource configuration message. The second resource configuration message includes the transmitter resource configuration message and the receiver resource configuration message, and the transmitter resource configuration message is the same or different from the receiver resource configuration message. A base station includes: a transceiver configured to transmit and receive wireless signals; and a processor coupled to the transceiver configured to perform the following steps: Configuring a wireless resource used by the at least one mobile device; transmitting the first resource configuration message to the first and second mobile devices when the inter-device communication is performed, so that the first mobile device as a transmitting end is configured according to the Transmitting, by the first resource configuration message, a data packet to the second mobile device as a receiving end; receiving a HARQ return packet from the second mobile device to determine whether the data packet has been successfully transmitted; and when the HARQ return packet is When the signal is denied, the radio resource configured by the first resource configuration message is selected or the second resource configuration message is sent to the first mobile device. The base station of claim 11, wherein the processor is configured to simultaneously transmit the first resource configuration message to the first and second mobile devices. The base station of claim 11, wherein the processor is configured to: after transmitting a transmitter resource configuration message to the first mobile device, transmitting a receiver resource configuration message to the second action The device, where the first resource configuration message includes the transmitter resource configuration message and the receiver resource configuration message, and the transmitter resource configuration message is the same or different from the receiver resource configuration message. The base station of claim 11, wherein the processor is configured to: Transmitting the first resource configuration message and the second resource configuration message to the first and second mobile devices by using a physical downlink control channel. The base station of claim 14, wherein the processor is further configured to: add an indicator to the first and second resource configuration messages to indicate that the configured radio resource is Resource configuration for the inter-device communication or resource configuration for an uplink and downlink communication. The base station of claim 14, wherein the processor is further configured to: configure the first and second resources by a temporary identity of a base station radio network dedicated to inter-device communication After the message is disturbed, it is transmitted by the transceiver. The base station of claim 11, wherein the processor is configured to: receive the HARQ return packet from the second mobile device as the receiving end through a physical uplink control channel. The base station of claim 11, wherein the processor is configured to: when the HARQ return packet is the denial signal and perform a synchronous HARQ retransmission, retaining the configuration of the first resource configuration message The wireless resource is configured to cause the first mobile device to automatically retransmit the data packet to the second mobile device. The base station of claim 11, wherein the processor is configured to: And when the HARQ return packet is the denial signal and performing an asynchronous HARQ retransmission, simultaneously transmitting the second resource configuration message to the first and second mobile devices, so that the first mobile device is configured according to the second resource. The configuration message retransmits the data packet to the second mobile device. The base station of claim 11, wherein the processor is configured to: when the HARQ return packet is the denial signal and perform an asynchronous HARQ retransmission, first transmit a transmitter resource configuration message to After the first mobile device, a receiving resource configuration message is sent to the second mobile device, so that the first mobile device retransmits the data packet to the second mobile device according to the transmitting resource configuration message, where The second resource configuration message includes the transmitter resource configuration message and the receiver resource configuration message, and the transmitter resource configuration message is the same or different from the receiver resource configuration message. For example, the base station described in claim 11 of the patent scope, wherein the base station is a base station that conforms to the advanced long-range evolution standard of a third-generation partner project. A method for performing a hybrid automatic repeat request, for a first and a second mobile device for performing an inter-device communication in a wireless communication system, comprising: the first and the second mobile device are monitored by a first resource allocation message of a base station to determine whether to perform an inter-device communication; when performing the inter-device communication, the wireless device assigned to the first mobile device according to the first resource configuration message is instructed as a transmitting end Resource, transfer a data The packet is sent to the second mobile device indicated as a receiving end; and the second mobile device transmits a HARQ return packet to the base station to reply whether the data packet has been successfully received. The method for performing a hybrid automatic repeat request according to claim 22, wherein the first and second mobile devices monitor the first resource configuration message from the base station by using a physical downlink control channel. The method for performing a hybrid automatic repeat request according to claim 22, wherein the second mobile device transmits the HARQ return packet by using a physical uplink control channel. The method for performing a hybrid automatic repeat request according to claim 22, further comprising: when the HARQ return packet is a negative signal, the first and second mobile devices perform an asynchronous HARQ retransmission Or a synchronous HARQ retransmission. The method for performing a hybrid automatic repeat request according to claim 25, wherein when the first and the second mobile device perform the asynchronous HARQ retransmission, the method further includes: the first mobile device does not expect to receive Directly monitoring the physical downlink control channel to the HARQ return packet; the second mobile device continuously monitors the physical downlink control channel after transmitting the HARQ return packet to the base station; and when the first and the second mobile device receive The second resource configuration message from the base station, the first mobile device configured according to the second resource configuration message The new radio resource retransmits the data packet to the second mobile device. The method for performing a hybrid automatic repeat request according to claim 26, further comprising: the first mobile device determining, according to a new data indicator in the second resource configuration message, retransmitting the data packet or Transfer another data packet. The method for performing a hybrid automatic repeat request according to claim 25, wherein when the first and the second mobile device perform the synchronous HARQ retransmission, the method further includes: the first mobile device actively Receiving, by the physical uplink control channel, the HARQ return packet sent by the second mobile device to the base station; when the HARQ return packet is the negative signal, the first mobile device automatically allocates the information according to the first resource configuration message. The wireless resource retransmits the data packet to the second mobile device; and the second mobile device automatically receives the data packet according to the wireless resource allocated by the first resource configuration message. The method for performing a hybrid automatic repeat request according to claim 28, wherein when the first mobile device does not receive the HARQ return packet in the physical uplink control channel, the data packet is preset to be successful. Transfer and do not perform automatic data retransmission. A mobile device comprising: a transceiver configured to transmit and receive wireless signals; and a processor coupled to the transceiver configured to perform the following steps: Receiving a first resource configuration message from a base station to determine whether to perform an inter-device communication; and when the first resource configuration message indicates that the inter-device communication is performed and is a transmitting end, allocated according to the first resource configuration message Transmitting a data packet to another mobile device; and when the first resource configuration message indicates that the inter-device communication is performed as a receiving end, the wireless resource received according to the first resource configuration message is received from the wireless resource The data packet of another mobile device is encapsulated and a HARQ return packet is transmitted to the base station to reply whether the data packet has been successfully received. The mobile device of claim 30, wherein the processor is configured to: receive the first resource configuration message from the base station from a physical downlink control channel. The mobile device of claim 30, wherein the processor is configured to: transmit the HARQ return packet to the base station from a physical uplink control channel. The mobile device of claim 30, wherein when the HARQ return packet is a negative signal, the processor is further configured to perform an asynchronous HARQ retransmission or a synchronous HARQ retransmission. The mobile device of claim 33, wherein when the mobile device acts as the transmitting end and performs the asynchronous HARQ retransmission, the processor is configured to: Directly monitoring the physical downlink control channel, receiving, by the transceiver, a second resource configuration message from the base station; and retransmitting the data packet to the another mobile device according to a new wireless resource configured by the second resource configuration message . The mobile device of claim 34, wherein the second resource configuration message further comprises a new data indicator, wherein the processor determines to retransmit the data packet or perform another data packet transmission. The mobile device of claim 33, wherein when the mobile device acts as the receiving end and performs the asynchronous HARQ retransmission, the processor is configured to: after transmitting the HARQ return packet to the base station, Continuously monitoring the physical downlink control channel to receive the second resource configuration message from the base station; and re-receiving the data packet from the other mobile device according to the new wireless resource configured by the second resource configuration message. The mobile device of claim 36, wherein the second resource configuration message further comprises a new data indicator, the processor determining to re-receive the data packet or to receive another data packet. The mobile device of claim 33, wherein when the mobile device acts as the transmitting end and performs the synchronous HARQ retransmission, the processor is configured to: actively receive the other one from the physical uplink control channel The HARQ return packet transmitted by the mobile device to the base station; and when the HARQ return packet is the negative signal, automatically according to the first resource The wireless resource allocated by the configuration message retransmits the data packet to the other mobile device. The mobile device of claim 38, wherein when the mobile device does not receive the HARQ return packet in the physical uplink control channel, the processor is configured to preset that the data packet has been successfully transmitted and Automatic data retransmission will not be performed. The mobile device of claim 33, wherein when the mobile device acts as the receiving end and performs the synchronous HARQ retransmission, the processor is configured to: after transmitting the HARQ return packet to the base station, Automatically receiving the data packet according to the wireless resource allocated by the first resource configuration message. The mobile device of claim 30, wherein the mobile device is a mobile device conforming to an advanced long-range evolution standard of a third-generation partner program.