The power control method, a user equipment and a communication system

TECHNICAL FIELD

The present invention relates to a communication field, and more particularly to a power control method, a user equipment and a communication system.

Background technique

In order to improve LTE-A (Long Term Evaluation Advanced) system under the cell coverage and user experience, increase user throughput and system data transfer rate A dense deployment of a plurality of small cells (small cell) and therewith scene adaptive transmission / reception technology will be introduced. This technique can enhance network coverage and improve the system throughput rate and reuse resources, and can meet certain network capacity, based on the total energy consumption control access network.

By using the micro base station (Pico eNodeB), node remote radio head (RRH, Remote Radio Head) and a home base station (Home eNodeB) and other low-power, small cell can be deployed in accordance with regional needs and characteristics of carriers and services small cell cluster. In order to make the air interface and access network technology is more adapted to this channel conditions and environmental characteristics, and features some of the new features will be introduced. One of these features is dual-link (dual-connectivity), user equipment provides multiple wireless connections for data transfer and control operations.

On the other hand, point to point (Peer-to-Peer) communication, or device-to-device (D2D, Device-to-Device) adjacent services (proximity service) is an inter-device user interaction and more direct forms of communication. Without the support of the network infrastructure side, then D2D more like ad hoc networks.

If there is support for the network side, e.g., to a D2D integrated cellular communications network, then at least it brings the following benefits and applications: for example, the application can serve D2D Discovery of neighboring devices, this feature of the device adjacent the user can serve a variety of commercial applications level; or, D2D communication may be such that when the adjacent user equipment using the communication needs, the use of this means of communication can increase system throughput and reduce power consumption of the user equipment, traffic load balancing from the eNodeB side (traffic offloading); or using D2D as a repeater (relay) technology to enhance cell coverage.

It should be noted, on the face of the technical background described for convenience only on the technical aspect of the present invention will be clear and complete instructions, and to facilitate the understanding of the skilled in the art and set forth herein. Just because these programs in the background section of the present invention are described above and that the technical solution to those skilled in the art.

SUMMARY

However, the inventors found that: the introduction of the two scenarios, one or both of the above-mentioned wireless communication system, existing users power control (Power Control) mechanism can not apply to new scenarios and uses. Because a user equipment needs to handle more than one radio link, but a set of parameters or power control mechanism is a set of power control can not meet the new requirements.

Embodiments of the present invention to provide a power control method, a user equipment and a communication system. It aims to signal power control in a small cell or D2D and other scenes involving multiple links to meet the needs of a variety of scenarios.

According to an embodiment of the present invention, one aspect of the embodiment, there is provided a power control method, the method comprising: a user equipment for the connection of two or more of the power control parameters are arranged;

Said power control parameter controls the power of the signal on the connection corresponding to the connection of two or more, respectively, according to the power control.

According to another aspect of an embodiment of the present invention, there is provided a user device, the user device comprising: a parameter setting unit, power control parameters are arranged into two or more connections;

Power control unit controls the power signal on the connection based on the power control parameter corresponding to the connection of two or more power control, respectively.

According to another aspect of an embodiment of the present invention, there is provided a communication system, the communication system includes a user equipment as described above.

According to yet another aspect of an embodiment of the present invention, there is provided a computer-readable program, wherein execution of the program when the user device, the program causing a computer to execute a power control method as described above in the user equipment.

According to yet another aspect of an embodiment of the present invention, there is provided a computer-readable storage medium storing a program, wherein the computer readable program causes a computer to execute a power control method as described above in the user equipment.

Beneficial effects of the embodiments of the present invention is that the user device is connected to two or more power control parameters are configured to meet the needs of small cell or D2D and other issues involving multiple links scenes.

After the description and drawings reference text, detailed disclosure of specific embodiments of the present invention, indicating the principles of the present invention may be used in the way. It should be understood, embodiments of the present invention is not so limited in scope. Within the scope of the appended claims the spirit and provisions of the embodiments of the present invention includes a number of changes, modifications and equivalents.

Features that are described and / or illustrated features may be the same or similar manner in one or more other embodiments to use, with other embodiments of the combined characteristics, or other alternative embodiments of the characteristic .

Should be emphasized that the term "comprises / comprising" when used herein refers to the characteristic, the whole, integers, steps or components but does not preclude one or more other features, or the presence of an additional piece, steps or components.

BRIEF DESCRIPTION

Brief reference to the following may be better understood many aspects of the present invention. Components in the figures are not drawn to scale, but only for illustrating the principles of the present invention. In order to facilitate shown and described some of the parts of the invention, the drawings corresponding parts may be enlarged or reduced.

Elements and characteristics of elements and features in a drawings of the invention or an embodiment may be described with one or more other drawings or embodiments shown combined. Moreover, in the drawings, like reference numerals denote corresponding parts throughout the several views, and can be used to indicate more than one way to the corresponding parts used in the embodiment.

Figure 1 is a power control method according to an schematic flow diagram of the present invention;

2 is a flow diagram of another power control method according to an embodiment of the present invention is a schematic view;

FIG. 3 is another flow power control method according to an embodiment of the present invention is a schematic view;

Figure 4 is another flow power control method according to an embodiment of the present invention is a schematic view;

Figure 5 is an example of the power control method according to the present embodiment of the invention;

Figure 6 is a schematic diagram of a user apparatus constituting an embodiment of the present invention;

Figure 7 is another embodiment of a user device of the present invention is a configuration diagram showing;

Figure 8 is another embodiment of a user device of the present invention is a configuration diagram showing;

Figure 9 is a schematic diagram of a communication system constituting an embodiment of the present invention.

detailed description

Referring to the drawings, the description below, the foregoing and other features of the invention will become apparent. In the description and drawings, and specifically disclosed certain embodiments of the invention, which shows where you can use the principles of the present invention from the first embodiment, it is understood that the present invention is not limited to the embodiments described, on the contrary, this the invention includes all changes, modifications and equivalents falling within the scope of the appended claims.

Example 1

Embodiments provide a power control method of the present invention, FIG. 1 is a schematic flow diagram of a power control method embodiment of the present invention. , As shown in Figure 1, the method comprising:

Step 101, the user equipment is connected to two or more of the power control parameters are arranged; step 102, the user equipment according to the power control parameter of the control signal is connected to the power corresponding to two or more than two connections, respectively power control.

In this embodiment, two or more connections (Connectivity) may include: a cellular device is connected between the base station and the user equipment (Cellular Connectivity) and / or the user device and the other user device-to-device connection ( D2D Connectivity).

For example, a user device can simultaneously maintain two maintain communication links: one between the base station and the Cellular Link, the other one is the D2D link with one other user devices; or, it can be with two other user equipment D2D link between the two; Cellular Link or can also be a macro base station and the other one is between the micro base Cellular link. However, the present invention is not limited thereto, for example, may also be other connections, you can also determine the specific application scenario according to the actual situation.

It is worth noting that the present invention only two connections as an example, but the present invention is not limited thereto. For more than two connections is equally applicable to the present invention.

In this embodiment, in some scenarios can be uplink interference coordination. User equipment can be scheduled on different uplink resource, the uplink resource may be a different time division, frequency division can also be. Because different resources corresponding to the reception point / base / cell / connectivity may also be different, so you can have different uplink interference and path loss and the like.

In some scenarios, if the base station in the downlink subframe used almost empty (ABS, almost blank subframe), then the ABS subframe carrying UL grant will be much less, or no. Correspondingly, in some uplink subframe subset, the uplink interference characteristics will be different.

In the present embodiment, the two or more connections can be configured on a set of power control parameters (or a power control mechanism) for different connections. Each power control parameter services in a connection, it can be more accurate signal transmission, to meet the various needs of different scenarios.

In the specific implementation, for each connection based on how power control power control parameter, refer to the prior art. In addition, as to how to configure the power control parameters for each of a connection, the user equipment can be configured according to the information base station or other user equipment sends can also be configured according to their measurements on the signal.

Figure 2 is a schematic flow diagram of another embodiment of the power control method of the present invention. , As shown in Figure 2, the method comprising:

201, the information the user equipment receives a base station or other user equipment transmitting step;

Step 202, the user equipment based on the received power control parameter information are arranged for the connection of two or more;

Step 203, the user equipment according to the power control parameter controls the power of the signal on the connection corresponding to two or more than two connections are for power control.

In the present embodiment, the user device may perform power control parameters based on the configuration of the base station, or other information sent by the user equipment. For example, a user A may receive the device configuration information is transmitted to the base station corresponding to the configuration Cellular Link power control parameter; Alternatively, the user may receive the measurement information to configure the device B sends a corresponding power control D2D Link parameters.

Figure 3 is a flow diagram of another embodiment of the power control method of the present invention. , As shown in Figure 3, the method comprising:

Step 301, the user equipment is connected to two or more signal measurements;

Step 302, the user equipment based on the results of the measurements of two or more of the connecting power control parameters are arranged;

In step 303, the user equipment according to the power control parameter controls the power of the signal on the connection corresponding to two or more than two connections are for power control.

In the present embodiment, the user equipment may own different signal connection is measured, and the measurement results for the configuration according to the power control parameter. For example, a user of device A may be connected to the signal on Cellular measured and the measurement results based on the configuration corresponding to the Cellular Link power control parameters; Alternatively, the user device A may be the signal for the D2D connection between the user device B are performed measurements and configure the D2D Link corresponding power control parameters based on the measurement results.

It is worth noting that the above only how to configure the power control parameters are schematically described. However, the present invention is not limited thereto, e.g., the user equipment can according to the configuration information to configure the base station side corresponding to the connection Cellualr power control parameter, and according to the measurement results D2D connection configuration corresponding to the power control parameters; can be determined according to the actual situation of the specific configuration the way.

In this embodiment, each set of control parameters may also correspond to a set of resources. Figure 4 is a schematic flow diagram of another power control method according to an embodiment of the present invention. , As shown in Figure 4, the method comprising:

In step 401, the user equipment is connected to two or more of the power control parameters are arranged; step 402, the user equipment for different resource set different power control parameter;

Step 403, the user equipment according to the power control parameter corresponding to the control signal power connected to two or more than two connections are for power control.

Wherein the resources include: time-domain resources and / or frequency resources. In particular, the time-domain resources may include a subset of the sub-frame (Subframe subset); frequency domain resources include: resource block group (RB Group), set resource blocks (RB Set) or members of the carrier (the Component Carrier) 0

FIG 5 is an exemplary embodiment of the present invention, respectively, to the user device A has two connections 1 and 2, the user device B each have two connections 3 and 4 will be described as an example.

As shown in Figure 5, the user A device in connection with a different connection 2, you can configure and use different power control parameter, while the power control parameters may also correspond to different subframe sets.

P I = min{Pcmax, Po l + alpha_l *PL_l} in subset#l

P_2 = min{Pcmax, Po_2 + alpha_2*PL_2} in subset#2

Wherein, P_l represents transmission power connection 1; Po_l indicates the connection target receiver 1 receives power; alpha l 1 indicates that the connection path loss compensation factor; PL_1 1 indicates that the connection of the estimated path loss value; P_2 represents transmission power connection 2; Po_2 indicates that the connection of 2 receiver target received power; alpha_2 2 indicates that the connection path loss compensation factor; PL_2 indicates that the connection 2 estimated path loss value; Pcmax is a predetermined value, the value can be configured by the network side, it can be user equipment side preset value.

As shown in Figure 5, the user device B 3 different connections and connection 4, you can configure and use different power control parameter; can be controlled for different frequency-domain resources and / or time-domain resource allocation power parameters.

P_3 = Po_3 + alpha_3*PL_3+10*log(M_3) in subset/RBG #1

P_4 = Po_4 + alpha_4*PL_4+10*log(M_4) in subset/RBG #2

When connecting 3 and 4 connection resources used at the same time in a transmission time interval (TTI, Transmission Time Interval) when: P_total = min {Pcmax, 10 * log [10 the A (P_3 / 10) +10 the A (P_4 / 10 )]}.

Wherein, P_3 represents transmission power connection 3; Po_3 connecting three receiver target received power; alpha_3 connecting three road loss compensation factor; M_3 PRB represents the number of users connected to the device in use 3; P_4 launch represents the connection of 3 power; Po_4 indicates the connection target received power receiver 4; alpha_4 represents path loss compensation factor connected to 4; M_4 represents the number of users connected to the device 4 PRB used; when the connection 3 and 4 connection resources used at the same time in a TTI the time required to calculate the total transmit power must not exceed the maximum transmit power, P total represents the total transmit power of the user equipment.

It is worth noting that only schematically in FIG. 5 shows for two or more connections, configure different situations of power control parameters for different resources. However, the present invention is not limited thereto, and may also determine the specific embodiment according to the actual scenes.

From the above-described embodiment, the user equipment for the connection of two or more power control parameters are configured to meet the needs of small cell or D2D and other issues involving multiple links scenes.

Example 2

Embodiments of the present invention there is provided a user equipment corresponding to the power control method as described in Example 1; in which the same content is omitted.

Figure 6 is a configuration diagram showing an example of a user equipment embodiment of the present invention, shown in Figure 6, the user device 600 comprising: parameter setting unit 601 and power control unit 602; a user device 600 can refer to other parts of the prior art, in the accompanying not shown in FIG.

Wherein the parameter configuration unit 601 is two or more connections are disposed power control parameters; power control unit 602 according to the power control parameter controls the power of the signal on the connection corresponding to two or more than two connections, respectively power control.

Figure 7 is another embodiment of a user device of the present invention constitutes a schematic view, shown in Figure 7, the user device 700 comprising: parameter setting unit 601 and power control unit 602; described above.

As shown in Figure 7, the user equipment 700 may further comprise: a receiving unit 703, a base station or other receive information sent by the user equipment. Further, the configuration unit 601 is also based on the received information for the power control parameters are arranged into two or more connections.

Figure 8 is another embodiment of a user device of the present invention constitutes a schematic view, shown in Figure 8, the user equipment 800 comprising: parameter setting unit 601 and power control unit 602; described above.

8, user equipment 800 may further comprise: measuring means 803, for connecting two or more signal measurements. Further, the configuration unit 601 is also used for power control parameters are arranged into two or more connections based on the result of measurement.

In this embodiment, the configuration unit 601 may also be used to: configure different power control parameters for different resources.

From the above-described embodiment, the user equipment for the connection of two or more power control parameters are configured to meet the needs of small cell or D2D and other issues involving multiple links scenes.

Example 3

Example embodiments of the present invention provide a communication system, the communication system includes a user equipment as described in Example 2, as well as other user equipment and a base station.

Figure 9 is a schematic diagram of a communication system constituting an embodiment of the present invention, shown in Figure 9, the communication system 900 includes user equipment 901, user equipment 902 and base station 903. Wherein, the user device 901 of Example 2 can be a user equipment 600, 700 or 800.

User device 901 has two connections: D2D connections and Cellular connection example. 9, the user equipment 901 and user equipment 902. FIG D2D connection with a base station 903. Cellular conventional connection. Thus, the user device 901 may respectively D2D connection and Cellular connection configuration different power control parameter.

Embodiments of the present invention also provides a computer readable program, wherein the program when executed in the user equipment, said program causing a computer to execute a power control method as described above in Example in the user equipment.

Embodiments of the present invention also provides a memory having computer-readable program storage medium, wherein the computer readable program causes a computer to execute the above power control method described in Example 1 in the user equipment.

Above the present invention is an apparatus and method may be implemented in hardware, software can also be combined by the hardware. The present invention relates to a computer readable program, when the program is executed by logic elements, enabling the device logic components to achieve the above or component parts, or to implement various components of the logical methods described above or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, CD, DVD, flash memory, etc.

Drawings for one or more combinations of features described in one or more blocks and / or functional blocks, may be implemented as a general purpose processor for performing the functions described herein, a digital signal processor (DSP ), an appropriate application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any. Function block drawings depict one or more and / or one or more combinations of the functional blocks for, may also be implemented as a combination of computing devices, for example, combination of a DSP and a microprocessor, a plurality of micro-processing , one or more microprocessors in conjunction with a DSP communication, or any other such configuration.

Above in connection with specific embodiments of the present invention has been described, those skilled in the art should be clear that these descriptions are exemplary and not restrictive of the scope of the present invention. Within the skill in the art can make various changes and modifications of the invention in accordance with the spirit and principles of the present invention, such variations and modifications are also the present invention.

Claims

A power control method, the method comprising:

Configure the user equipment to the power control parameter of the connection of two or more;

Said power control parameter controls the power of the signal on the connection corresponding to the connection of two or more, respectively, according to the power control.

2. The method according to claim 1, wherein two or more connections include: connection to the cellular base station equipment and / or other user device-to-device connection.

3. The method according to claim 1 or claim 2, wherein, the method further comprising:

The information the user equipment receives a base station or other user equipment is transmitted;

And, based on the received information are respectively arranged as two or more of the connection of power control parameters.

4. The method according to claim 1 or claim 2, wherein, the method further comprising:

The user of the apparatus is connected to two or more signal measurements;

Further, according to the result of the measurement of two or more connections are arranged power control parameter. 5. The method of claim 1 or claim 2, wherein, the method further comprising:

The user device resources are arranged for the different power control parameter.

6. A method according to claim 5, wherein the resource comprises: a time domain resource and / or frequency resources.

7. A method according to claim according to claim 6, wherein said resources comprise time-domain subframe subset; the frequency domain resource comprises: a resource block group, the set of resource blocks or the carrier member.

8. A user equipment, the user equipment comprising:

Parameter configuration unit, power control parameters are arranged into two or more connections;

Power control unit controls the power signal on the connection based on the power control parameter corresponding to the connection of two or more power control, respectively.

9, a user apparatus according to claim 8, wherein the user device further comprises:

Receiving means for receiving a base station or other user equipment transmits the information;

And said configuring means are arranged according to the received power control parameter information for said two or more connections or resources.

10, according to claim 8 wherein the user equipment, wherein the user device further comprises:

Measuring means for the connection of two or more signal measurements;

Further, the configuration unit according to the results of the measurements of two or more connections are arranged or resource power control parameter.

11. The user equipment of claim 8, wherein the unit is further configured to configure the power control parameters for different resources.

12. A communication system, said communication system comprising a user equipment according to any one of 8-11 claims.

13. A computer-readable program, wherein the program when executed in the user equipment, said program causing a computer to execute a power control method as claimed according to any one of claims 7 at the user equipment.

14. A computer-readable program stored in a storage medium, wherein said computer-readable program causing a computer to execute a power control method according to any one of claims 7 to claim in the user equipment.