CN102983944A - Data transmission processing method, device and system - Google Patents

Abstract

The present invention provides a data transmission processing method, device, and system, wherein the method includes: the source user terminal receives a download request message sent by the target user terminal, and if the source base station indicates that it and the target user terminal can perform end-to-end D2D communication on the terminal, obtain the link transmission quality of the first communication link corresponding to the D2D communication; obtain the link transmission quality of the second communication link transmitted between itself and the target user terminal through the source base station and the target base station; compare The link transmission quality of the first communication link and the second communication link is to transmit the service data to be downloaded to the target user terminal through the link with better transmission quality. Through the data transmission processing method, device and system provided by the present invention, the dynamic selection of the transmission mode according to the real-time channel transmission quality is realized, the reliability of the data transmission is guaranteed to the greatest extent, and the waste of precious wireless resources is avoided.

Description

Data transmission processing method, device and system

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a data transmission processing method, device, and system.

Background technique

Peer-to-Peer (P2P) technology originated from the Internet. Its core idea is to exchange data directly between nodes in the network. The status of each node is equal. It is both a server and a client. While enjoying the services provided by other nodes, a node is also providing services for other nodes. At present, the P2P technology has been applied to the mobile Internet. With the increasing demand for data exchange in the mobile Internet, the P2P technology has become an important media exchange technology for the mobile Internet. Specifically, in the P2P mobile Internet, when the source user terminal receives the download request sent by the target user terminal, the source base station sends the service data to the target base station through the access network equipment, or the access network equipment and the core network equipment, Then the target base station sends it to the target user terminal.

In a cellular communication system, in addition to the above-mentioned traditional communication links, when the base station receives a device-to-device (D2D) transmission request sent by a P2P user terminal, if it is determined that the P2P When the D2D communication conditions are met between the user terminals, it means that the data between the P2P user terminals can be directly transmitted through the D2D communication link without going through the base station, which reduces the load pressure on the base station.

To sum up, although there are many data transmission modes between P2P user terminals, it is currently impossible to dynamically select the transmission mode according to the real-time channel transmission quality.

Contents of the invention

Aiming at the above-mentioned defects in the prior art, embodiments of the present invention provide a data transmission processing method, device, and system.

One aspect of the present invention provides a data transmission processing method, including:

The source user terminal receives the download request message sent by the target user terminal, and if the source base station indicates that it can perform end-to-end D2D communication with the target user terminal, acquire the first communication link corresponding to the D2D communication link transmission quality;

The source user terminal obtains the link transmission quality of the second communication link transmitted between itself and the target user terminal via the source base station and the target base station;

Compare the link transmission quality of the first communication link and the second communication link, and transmit the service data to be downloaded to the target user terminal through the link with better transmission quality.

Another aspect of the present invention provides a user terminal, including:

A receiving module, configured to receive a download request message sent by a target user terminal;

The first acquiring module is configured to acquire the link transmission quality of the first communication link corresponding to the D2D communication if the source base station indicates that end-to-end D2D communication can be performed between itself and the target user terminal;

The second acquiring module is configured to acquire the link transmission quality of the second communication link transmitted between itself and the target user terminal via the source base station and the target base station;

A control module, configured to compare the link transmission quality of the first communication link and the second communication link, and transmit the service data to be downloaded to the target user terminal through the link with better transmission quality.

Another aspect of the present invention provides a data transmission processing system, including: a source user terminal, a source base station to which the source user terminal belongs, a target user terminal, and a target base station to which the target user terminal belongs, wherein the source base station and The target base station may be the same base station or different base stations, and the source user terminal is the above-mentioned user terminal.

In the data transmission processing method, device and system provided by the embodiments of the present invention, when the source user terminal receives the download request message sent by the target user terminal, if the source base station indicates that it can perform end-to-end D2D communication with the target user terminal, Then obtain the link transmission quality of the first communication link corresponding to the D2D communication, and obtain the link transmission quality of the second communication link between itself and the target user terminal through the source base station and the target base station, and compare the first communication The link transmission quality of the link and the second communication link transmits the service data to be downloaded to the target user terminal through the link with better transmission quality, thereby realizing the dynamic selection of the transmission mode according to the real-time channel transmission quality, maximizing It ensures the reliability of data transmission and avoids wasting precious wireless resources.

Description of drawings

Fig. 1 is a flowchart of an embodiment of the data transmission processing method of the present invention;

2 is a flow chart of another embodiment of the data transmission processing method of the present invention;

Figure 3 is a service transmission system based on the P2P network base station direct architecture;

FIG. 4 is a schematic structural diagram of an embodiment of a user terminal according to the present invention;

FIG. 5 is a schematic structural diagram of another embodiment of a user terminal according to the present invention;

FIG. 6 is a schematic structural diagram of an embodiment of the data transmission processing system of the present invention.

Detailed ways

Fig. 1 is a flowchart of an embodiment of the data transmission processing method of the present invention, as shown in Fig. 1, the method includes:

Step 100, the source user terminal receives the download request message sent by the target user terminal, and if the source base station indicates that end-to-end D2D communication can be performed between itself and the target user terminal, obtain the first link transmission quality of the communication link;

In the P2P mobile Internet, when the source base station to which the source user terminal belongs receives the download request message sent by the target user terminal, it parses the download request message to obtain the source user terminal identifier and the target user terminal identifier. The corresponding source user terminal sends the download request message, and then the source base station queries the terminal location information in the home location register according to the source user terminal identifier and the target user terminal identifier, so as to judge the source user terminal and the target user terminal according to the preset D2D communication strategy. Whether the D2D communication conditions are met, and if it is judged to be satisfied, it indicates that the source user terminal can perform D2D communication with the target user terminal, so that the source user terminal obtains the link of the first communication link corresponding to the D2D communication between the target user terminal transmission quality. Among them, obtaining link transmission quality includes obtaining link transmission parameters used to represent link transmission quality, and link transmission parameters specifically include signal-to-noise ratio, unit bit resource consumption, bit error rate, subframe bit error rate, and retransmission At least one parameter in the number of times. It should be noted that those skilled in the art can understand that the link transmission quality of the first communication link is obtained by the source user terminal through a delay measurement method and a signal measurement method, and those skilled in the art can select according to needs .

Step 101, the source user terminal obtains the link transmission quality of the second communication link between itself and the target user terminal via the source base station and the target base station;

The source user terminal determines the target base station to which the target user terminal belongs by querying the user information stored in the base station and/or core network equipment according to the target user terminal identifier, so as to determine the distance from itself to the target user terminal through the source base station according to the network architecture of the mobile Internet. A second communication link for transmitting data with the target base station, wherein the network architecture of the mobile Internet includes: a network architecture for data transmission through the core network and a network architecture for data transmission through the access network. After the source user terminal determines the second communication link from itself to the target user terminal, it acquires the link transmission quality of the second communication link, wherein acquiring the link transmission quality includes acquiring the link transmission quality used to represent the link transmission quality The link transmission parameter specifically includes at least one parameter among signal-to-noise ratio, unit bit resource consumption, bit error rate, subframe bit error rate, and retransmission times. It should be noted that those skilled in the art can understand that the link transmission quality of the second communication link includes the link transmission quality of the uplink from the source user terminal to the source base station, and the link transmission quality of the uplink from the source base station to the target user terminal. The link transmission quality of the downlink between them, the link transmission quality of the uplink is obtained by the source user terminal through the delay measurement method and the signal measurement method, and the link transmission quality of the downlink is obtained by the receiving Those skilled in the art can select the network access equipment, or access network equipment and core network equipment through delay measurement and signal measurement.

Step 102: Compare the link transmission quality of the first communication link and the second communication link, and transmit the service data to be downloaded to the target user terminal through the link with better transmission quality.

When the source user terminal obtains the link transmission quality of the first communication link transmitted between itself and the target user terminal through the D2D communication method, and the link transmission quality of the second communication link transmitted through the traditional method between the source base station and the target base station After the quality, compare the link transmission quality of the first communication link and the second communication link to determine the transmission link with the best transmission quality, and then the source user terminal uses all the wireless resources allocated by the system for itself to pass through the link with the best transmission quality The route transmits the service data to be downloaded to the target user terminal, for example: when the link transmission quality is represented by the signal-to-noise ratio, if the source user terminal judges that the signal-to-noise ratio of the first communication link is greater than the signal-to-noise ratio of the second communication link ratio, it is determined that the link transmission quality of the first communication link is good, and the D2D communication method is selected, that is, the service data to be downloaded is sent to the target user terminal through the first communication link; when the link transmission quality is consumed by unit bit resources The quantity indicates that if the source user terminal determines that the unit bit resource consumption of the first communication link is greater than the unit bit resource consumption of the second communication link, it determines that the link transmission quality of the second communication link is good, and adopts the method of passing through the source The traditional communication method of base station and target base station transmission, that is, to send the service data to be downloaded to the target user terminal through the second communication link, so that the source user terminal dynamically selects the data transmission mode according to the real-time link transmission quality, ensuring maximum To ensure the reliability of data transmission,

In the data transmission processing method provided in this embodiment, when the source user terminal receives the download request message sent by the target user terminal, if the source base station indicates that end-to-end D2D communication can be performed between itself and the target user terminal, then obtain and D2D communication The link transmission quality of the corresponding first communication link, and obtain the link transmission quality of the second communication link between itself and the target user terminal through the source base station and the target base station, and compare the first communication link with the second The link transmission quality of the communication link transmits the business data to be downloaded to the target user terminal through the link with better transmission quality, so as to realize the dynamic selection of the transmission mode according to the real-time channel transmission quality and ensure the maximum data transmission high reliability and avoid wasting precious wireless resources.

For the embodiment shown in FIG. 1, the second communication link from the source user terminal to the target user terminal is determined according to the network architecture of the mobile Internet, wherein the network architecture of the mobile Internet includes: a network for data transmission via a core network Architecture and network architecture for data transmission over the access network. In order to explain more clearly how the source user terminal determines the second communication link from itself to the target user terminal and obtains the link transmission quality of the second communication link, take the network architecture for data transmission through the access network as an example In detail, the network architecture for data transmission through the access network is aimed at the defect that the network architecture for data transmission through the core network causes a bottleneck to the data processing capability of the core network, and proposes a base station direct architecture that supports direct access to base stations communication system, each base station in the system has an interface between base station equipment, through the control plane protocol stack and user plane protocol stack of the interface between each base station equipment, a direct path for data transmission between each base station and the rest of the base stations is established, thus based on In the communication system of the base station direct communication structure, the transmission of service data between user terminals is completed only through the access network, without passing through the core network. The data transmission processing process of the P2P network based on the above architecture is specifically shown in Figure 2, and Figure 2 is a flow chart of another embodiment of the data transmission processing method of the present invention, the link transmission quality in this embodiment is obtained by signal measurement , the method specifically includes:

Step 200, the source user terminal receives the download request message sent by the target user terminal, and if the source base station indicates that it can perform end-to-end D2D communication with the target user terminal, establish the the first communication link, and send a reference signal to the target user terminal through the first communication link;

In the P2P mobile Internet, when the source base station to which the source user terminal belongs receives the download request message sent by the target user terminal, it parses the download request message to obtain the source user terminal identifier and the target user terminal identifier. The corresponding source user terminal sends the download request message, and then the source base station queries the terminal location information in the home location register according to the source user terminal identifier and the target user terminal identifier, so as to judge the source user terminal and the target user terminal according to the preset D2D communication strategy. Whether the D2D communication conditions are met, if it is judged to be satisfied, it indicates that the source user terminal can carry out D2D communication with the target user terminal, so that the source user terminal establishes a connection for D2D communication with the target user terminal according to the channel and power allocated by the source base station. A first communication link, and send a reference signal to the target user terminal through the first communication link.

Step 201, the source user terminal receives a channel quality indicator fed back by the target user terminal through the first communication link and obtained by measuring the reference signal;

After the source user terminal sends a reference signal to the target user terminal through the first communication link, the target user terminal measures the reference signal received from the source user terminal received from the first communication link to obtain a channel quality indicator represented by information such as signal reception strength , and return the obtained channel quality indication to the source user terminal through the first communication link.

Step 202, the source user terminal acquires the link transmission quality of the first communication link according to the channel quality indicator;

The source user terminal receives the channel quality indicator returned by the target user terminal through the first communication link, and calculates and acquires the link transmission quality of the first communication link used for D2D communication between itself and the target user terminal according to the channel quality indicator .

Step 203, the source user terminal sends an uplink reference signal to the source base station, and receives the first channel of the uplink channel between the source user terminal and the source user terminal that is fed back by the source base station and obtained by measuring the uplink reference signal quality indication;

The source user terminal sends an uplink reference signal to the source base station, and the source base station measures the uplink reference signal sent by the source user terminal to obtain a first channel quality indicator of the uplink channel with the source user terminal represented by information such as signal reception strength, and the obtained The first channel quality indication is returned to the source user terminal.

Step 204, the source user terminal receives a second channel quality indicator from the source base station to the target user terminal sent by the source base station, wherein the second channel quality indicator is when the target base station is the When the source base station is mentioned, the target user terminal obtains it by measuring the downlink reference signal sent by the source base station; or, when the target base station is not the source base station, according to the information from the source base station to the target base station Each transit base station on the direct data channel obtains the direct channel quality indication obtained by measuring the reference signal sent by the previous base station, and the channel quality indication obtained by the target user terminal by measuring the downlink reference signal sent by the target base station;

After the source base station measures the uplink reference signal sent by the source user terminal to obtain the first channel quality indication of the uplink channel from the source user terminal to the source base station, the source base station also needs to obtain the downlink channel from the source base station to the target user terminal The second channel quality indication is specifically: the source base station queries the user information stored locally, and judges whether the user information contains the target user terminal identifier, and if it is determined that the user information contains the target user terminal identifier, then determine that it is the target base station That is, the target user terminal belongs to itself, the source base station sends a downlink reference signal to the target user terminal, and the target user terminal measures the downlink reference signal sent by the source base station to obtain the second channel of the downlink channel between the source base station and the source base station, which is represented by information such as signal reception strength quality indication, and return the obtained second channel quality indication to the source base station, and the source base station sends the second channel quality indication between itself and the target user terminal to the source user terminal.

If the source base station determines that the user information does not contain the target user terminal identifier, it determines that it is not the target base station, and queries the target base station to which the target user terminal belongs by sending the target user terminal identifier to the access network device or core network device. The source base station obtains the direct data channel from the source base station to the target base station according to the direct route information of the base station, and each transit base station on the direct data channel obtains the direct channel quality indication of each direct channel by measuring the reference signal sent by the previous base station, and the target The user terminal obtains the channel quality indication of the downlink channel from the target base station to the target user terminal by measuring the downlink reference signal sent by the target base station, and the target base station and each transit base station combine the channel quality indication measured by the target user terminal with the direct channel The quality indicator is sent to the source base station through the base station direct route, so that the source base station uses the sum of the above channel quality indicators as the second channel quality indicator between itself and the target user terminal and sends it to the source user terminal.

Step 205, the source user terminal obtains the link transmission quality of the second communication link according to the first channel quality indicator and the second channel quality indicator;

The source user terminal obtains the first channel quality indicator of the uplink channel from itself to the source base station, and the second channel quality indicator of the downlink channel from the source base station to the target user terminal, so that according to the first channel quality indicator and the second channel quality indicator The quality indication acquires the link transmission quality of the second communication link from the source user terminal to the target user terminal.

Step 206: Compare the link transmission quality of the first communication link and the second communication link, and transmit the service data to be downloaded to the target user terminal through the link with better transmission quality.

When the source user terminal obtains the link transmission quality of the first communication link transmitted between itself and the target user terminal through the D2D communication method, and the link transmission quality of the second communication link transmitted through the traditional method between the source base station and the target base station After the quality, compare the link transmission quality of the first communication link and the second communication link to determine the transmission link with the best transmission quality, and then the source user terminal uses all the wireless resources allocated by the system for itself to pass through the link with the best transmission quality The route transmits the service data to be downloaded to the target user terminal, for example: when the link transmission quality is represented by the signal-to-noise ratio, if the source user terminal judges that the signal-to-noise ratio of the first communication link is greater than the signal-to-noise ratio of the second communication link ratio, it is determined that the link transmission quality of the first communication link is good, and the D2D communication method is selected, that is, the service data to be downloaded is sent to the target user terminal through the first communication link; when the link transmission quality is consumed by unit bit resources The quantity indicates that if the source user terminal determines that the unit bit resource consumption of the first communication link is greater than the unit bit resource consumption of the second communication link, it determines that the link transmission quality of the second communication link is good, and adopts the method of passing through the source The traditional communication method of base station and target base station transmission, that is, to send the service data to be downloaded to the target user terminal through the second communication link, so that the source user terminal dynamically selects the data transmission mode according to the real-time link transmission quality, ensuring maximum To ensure the reliability of data transmission,

In the data transmission processing method provided in this embodiment, when the source user terminal receives the download request message sent by the target user terminal, if the source base station indicates that end-to-end D2D communication can be performed between itself and the target user terminal, then obtain and D2D communication The link transmission quality of the corresponding first communication link, and obtain the link transmission quality of the second communication link between itself and the target user terminal through the source base station and the target base station, and compare the first communication link with the second The link transmission quality of the communication link transmits the business data to be downloaded to the target user terminal through the link with better transmission quality, so as to realize the dynamic selection of the transmission mode according to the real-time channel transmission quality and ensure the maximum data transmission high reliability and avoid wasting precious wireless resources.

In order to describe the data transmission processing method provided in this embodiment more clearly, the resource consumption per bit is used below to represent the link transmission quality from the source user terminal to the target user terminal. Among them, the unit bit resource consumption specifically refers to, assuming that the signal-to-noise ratio of the transmission link from the source user terminal to the target user terminal is SINR, then the transmission capacity obtained through the Shannon formula is:

C=log ₂ (1+SINR) (1),

Obtain C=f(SINR) through (1) (2),

From (2), the resources that need to be occupied by the wireless link to transmit unit bit data, that is, the resource consumption per unit bit, are: $R=\frac{1}{C}=\frac{1}{f\left(\mathrm{SINR}\right)}---\left(3\right),$

That is to say, transmitting 1 bit of data needs to consume R amount of resources. Figure 3 is a service transmission system based on the P2P network base station direct architecture. As shown in Figure 3, UE_1's home base station is base station 1 (BS_1), UE_2's home base station is base station 2 (BS_2), and UE_1 and UE_2 can perform D2D communication. The signal-to-noise ratio of the first communication link used for D2D communication from UE_1 to UE_2 is SINR _D , a base station direct channel can be established between BS_1 and BS_2, and the second communication link based on base station direct communication between UE_1 and UE_2 is established by UE_1 The radio bearer between BS_1, the base station direct bearer between BS_1 and BS_2, and the radio bearer between BS_2 and UE_2 are connected. Among them, it is assumed that the unit bit resource consumption of the direct data channel between BS_1 and BS_2 is S ₁ , and the signal-to-noise ratio of the link from BS_1 to UE_1 is SINR ₁ , which can be obtained from the channel quality indicator CQI information fed back from BS_1 to UE_1. The signal-to-noise ratio SINR ₂ of the transmission link from BS_2 to UE_2 can be obtained theoretically.

After UE_1 receives the download request sent by UE_2, it determines the link transmission quality of the first communication link from UE_1 to UE_2 according to the above measured channel quality indication as:

${\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; D.</span>}\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; D.</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; C</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; \&mu;</span>}<span\; class="notranslate">\; \&CenterDot;</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; SINR</span>}}_{\mathrm{<span\; class="notranslate">\; D.</span>}}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; ,</span>$

And the link transmission quality of the second communication link from UE_1 to UE_2 is:

$R^{\&prime;}=\mathrm{\&mu;}\&CenterDot;({\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="HDA00002522982800031.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+R_2)+\mathrm{\&omega;}\&CenterDot;\left(\underset{k=1}{\overset{\mathrm{no}}{\mathrm{\&Sigma;}}}{S}_k\right)=\mathrm{\&mu;}\&Center\; Dot;(\frac{1}{f\left({\mathrm{SINR}}_1\right)}+\frac{1}{f\left({\mathrm{SINR}}_2\right)})+\mathrm{\&omega;}\&Center\; Dot;{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA00002522982800031.png"\; state="\{\{state\}\}">S</figure-callout>}}_1,$ Wherein, μ and ω denote the weights of resources required to transmit a unit bit of data by using the wireless link and the direct link of the base station, respectively.

UE_1 compares the link transmission quality of the two communication links, specifically, when R'>R _D2D , UE_1 uses the D2D communication mode to transmit the service data to be downloaded to UE_2 through the first communication link, and when R'≤R _D2D , UE_1 transmits the service data to be downloaded to UE_2 through the second communication link by using the base station direct route. The link transmission quality of the two communication links is evaluated by UE_1, and the link that transmits the same bit and consumes the least amount of resources is preferentially selected for data transmission. In this way, as the wireless channel changes, UE_1 can always select a link with a better channel condition to send data, thereby bringing channel gain.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

FIG. 4 is a schematic structural diagram of an embodiment of the user terminal of the present invention. As shown in FIG. It is used to receive the download request message sent by the target user terminal; the first obtaining module 12 is used to obtain the first communication corresponding to the D2D communication if the source base station indicates that it can perform end-to-end D2D communication with the target user terminal. The link transmission quality of the link; the second obtaining module 13 is used to obtain the link transmission quality of the second communication link transmitted between itself and the target user terminal through the source base station and the target base station; the control module 14 is used to compare the first Link transmission quality of the communication link and the second communication link, the service data to be downloaded is transmitted to the target user terminal through the link with better transmission quality.

For the functions and processing flow of each module in the user terminal provided in this embodiment, refer to the method embodiment shown in FIG. 1 above. The implementation principles and technical effects are similar, and will not be repeated here.

FIG. 5 is a schematic structural diagram of another embodiment of the user terminal of the present invention. As shown in FIG. 5, based on the embodiment shown in FIG. The obtaining unit 123, wherein the first processing unit 121 is configured to establish a first communication link with the target user terminal if the source base station indicates that it can perform end-to-end D2D communication with the target user terminal, and pass The first communication link sends a reference signal to the target user terminal; the first receiving unit 122 is configured to receive the channel quality indicator fed back by the target user terminal through the first communication link and obtained by measuring the reference signal; the first obtaining unit 123 is used to The link transmission quality of the first communication link is acquired according to the channel quality indication.

Further, the second obtaining module 13 includes: a second processing unit 131, a second receiving unit 132, and a second obtaining unit 133, wherein the second processing unit 131 is configured to send an uplink reference signal to the source base station and receive feedback from the source base station The first channel quality indication of the uplink channel between the source user terminal and the source user terminal obtained by measuring the uplink reference signal; the second receiving unit 132 is configured to receive the second channel quality indication from the source base station to the target user terminal sent by the source base station, Wherein, the second channel quality indication is obtained by the target user terminal by measuring the downlink reference signal sent by the source base station when the target base station is the source base station; or, when the target base station is not the source base station, according to the Each transit base station on the direct data channel of the direct channel obtains the direct channel quality indication obtained by measuring the reference signal sent by the previous base station, and the channel quality indication obtained by the target user terminal by measuring the downlink reference signal sent by the target base station; the second obtaining unit 133 is configured to acquire the link transmission quality of the second communication link according to the first channel quality indicator and the second channel quality indicator.

In the foregoing embodiments, link transmission quality is specifically represented by at least one parameter among signal-to-noise ratio, unit bit resource consumption, bit error rate, subframe bit error rate, and retransmission times.

For the functions and processing flow of each module in the user terminal provided in this embodiment, refer to the method embodiment shown in FIG. 2 above. The implementation principles and technical effects are similar, and will not be repeated here.

FIG. 6 is a schematic structural diagram of an embodiment of the data transmission processing system of the present invention. As shown in FIG. 6, the system includes: a source user terminal 1, a source base station 2 to which the source user terminal 1 belongs, a target user terminal 3, and a target user terminal 3 The belonging target base station 4, wherein the source base station 2 and the target base station 4 may be the same base station or different base stations (as shown in FIG. 6 ), and the source user terminal 1 may be the user terminal provided by the embodiment of the present invention, The source base station 2, the target user terminal 3 and the target base station 4 are the source base station, the target user terminal and the target base station involved in the embodiment of the present invention.

For the functions and processing flow of each module in the data transmission processing system provided in this embodiment, refer to the method embodiment shown above, and its implementation principles and technical effects are similar, and will not be repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. a data transmission processing method is characterized in that, comprising:

The downloading request message that source user terminal receiving target user terminal sends, communicate by letter if can carry out end-to-end D2D between the source base station indication of ownership self and the described target terminal user, then obtain the communicate by letter link transmission quality of the first corresponding communication link with described D2D;

Described source user terminal is obtained self to the link transmission quality of the second communication link of the described source base station of process and target BS transmission between the described target terminal user;

The link transmission quality of more described the first communication link and described second communication link is by the preferably described target terminal user transmission of chain road direction of transmission quality business datum to be downloaded.

2. data transmission processing method according to claim 1 is characterized in that, described obtaining with the communicate by letter link transmission quality of the first corresponding communication link of described D2D comprises:

Set up described the first communication link between described source user terminal and the described target terminal user, and send reference signal by described the first communication link to described target terminal user;

Described source user terminal receive described target terminal user by described the first communication link feedback, by measuring described channel quality indication of examining signal acquisition;

Described source user terminal is obtained the link transmission quality of described the first communication link according to described channel quality indication.

3. data transmission processing method according to claim 1 is characterized in that, describedly obtains self and comprises to the link transmission quality through the second communication link of described source base station and target BS transmission between the described target terminal user:

Described source user terminal sends uplink reference signals to described source base station, and receive described source base station feedback, by measuring the first channel quality indication of up channel between the source user terminal that described uplink reference signals obtains and described;

Described source user terminal receives the second channel quality indication from described source base station to described target terminal user that described source base station sends, wherein, described second channel quality indication is when described target BS is described source base station, and described target terminal user is obtained by the downlink reference signal of measuring described source base station transmission; Perhaps, when described target BS is not described source base station, the direct channel quality indication of obtaining by the reference signal of measuring last base station and sending according to each the transfer base station on the straight-through data channel from described source base station to target BS, and the described target terminal user channel quality indication of obtaining by the downlink reference signal of measuring described target BS and sending is obtained;

Described source user terminal is obtained the link transmission quality of described second communication link according to described the first channel quality indication and the indication of described second channel quality.

4. arbitrary described data transmission processing method according to claim 1-3, it is characterized in that described link transmission quality specifically represents by at least one parameter in signal to noise ratio, unit bit consumed resource, bit error rate, the subframe error rate and the number of retransmissions.

5. a user terminal is characterized in that, comprising:

Receiver module is used for the downloading request message that the receiving target user terminal sends;

The first acquisition module is communicated by letter if can carry out end-to-end D2D between the source base station indication self that is used for ownership and the described target terminal user, then obtains the communicate by letter link transmission quality of the first corresponding communication link with described D2D;

The second acquisition module is used for obtaining self to the link transmission quality of the second communication link of the described source base station of process and target BS transmission between the described target terminal user;

Control module is for the link transmission quality of more described the first communication link and described second communication link, by the preferably described target terminal user transmission of chain road direction of transmission quality business datum to be downloaded.

6. user terminal according to claim 5 is characterized in that, described the first acquisition module comprises:

The first processing unit, if can carry out end-to-end D2D between the source base station indication self that is used for ownership and the described target terminal user communicates by letter, then and set up described the first communication link between the described target terminal user, and send reference signal by described the first communication link to described target terminal user;

The first receiving element, be used for receiving described target terminal user by described the first communication link feedback, by measuring described channel quality indication of examining signal acquisition;

The first acquiring unit is used for indicating the link transmission quality of obtaining described the first communication link according to described channel quality.

7. user terminal according to claim 5 is characterized in that, described the second acquisition module comprises:

The second processing unit is used for sending uplink reference signals to described source base station, and receive described source base station feedback, by measuring the first channel quality indication of up channel between the source user terminal that described uplink reference signals obtains and described;

The second receiving element, be used for receiving the second channel quality indication from described source base station to described target terminal user that described source base station sends, wherein, described second channel quality indication is when described target BS is described source base station, and described target terminal user is obtained by the downlink reference signal of measuring described source base station transmission; Perhaps, when described target BS is not described source base station, the direct channel quality indication of obtaining by the reference signal of measuring last base station and sending according to each the transfer base station on the straight-through data channel from described source base station to target BS, and the described target terminal user channel quality indication of obtaining by the downlink reference signal of measuring described target BS and sending is obtained;

Second acquisition unit is used for indicating the link transmission quality of obtaining described second communication link according to described the first channel quality indication and described second channel quality.

8. arbitrary described user terminal is characterized in that according to claim 5-7, and described link transmission quality specifically represents by at least one parameter in signal to noise ratio, unit bit consumed resource, bit error rate, the subframe error rate and the number of retransmissions.

9. data transmission processing system, it is characterized in that, comprise: the target BS of the source base station of source user terminal, described source user terminal attaching, target terminal user, described target terminal user ownership, wherein, described source base station and described target BS can be same base station, also can be different base stations, described source user terminal is such as each described user terminal of claim 5-8.

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