WO2015028884A2

WO2015028884A2 - Method and apparatus for assigning uplink power

Info

Publication number: WO2015028884A2
Application number: PCT/IB2014/002000
Authority: WO
Inventors: Jin Liu; Jianguo Liu; Fang-Chen Cheng
Original assignee: Alcatel Lucent
Priority date: 2013-08-28
Filing date: 2014-08-14
Publication date: 2015-03-05
Also published as: CN104427604A; CN104427604B; WO2015028884A3

Abstract

An object of the invention is to provide a method and apparatus for assigning uplink power. Specifically, determining power assignment priority information of every uplink physical channel of multiple target connections corresponding to mobile device; assigning transmission power for every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of mobile device. Compared with the prior art, by determining power assignment priority information of every uplink physical channel of multiple target connections corresponding to a mobile device, so as to assign transmission power for every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of mobile device, this invention realizes an uplink power assigning method, so that the uplink power assignment method according to the invention may be applied to the situation of simultaneous transmission of multiple PUCCHs carrying UCI, simultaneous transmission of multiple PUSCHs carrying UCI, as well as simultaneous transmission of PUCCH carrying UCI and PUSCH carrying UCI in the same subframe, so that supporting the carrier aggregation-based dual-connectivity.

Description

METHOD AND APPARATUS FOR ASSIGNING UPLINK POWER

FIELD OF THE INVENTION [0001] The present invention relates to the field of communications technology, and more particularly, to a technology of assigning uplink power.

BACKGROUND OF THE INVENTION [0002] In a heterogeneous network, introduction of a low power network node faces various challenges, such as uplink (UL)/ downlink (DL) power imbalance, mobility robustness, frequent handover, the incurred signaling overload, and inefficient inter-node resource utilization due to non-ideal backhaul, etc., which limit the network performance remarkably.

[0003] In 3GPP RAN2, dual-connectivity was identified as an effective solution to solve the above problems. In dual-connectivity, user equipment (UE) can have simultaneous connectivity to at least two network nodes that could operate on the same or separate frequency. The dual-connectivity is typically applicable to t multiple base stations for example eNBs (evolved-NodeB) , which are connected with each other by non-ideal backhaul, i.e., with loose latency and capacity requirements on the backhaul.

[0004] Carrier aggregation (CA) can be used to realize dual-connectivity, wherein one radio connection could operate on a part of component carriers (CCs) and another radio connection operates on another part of CCs, as shown in Fig. 1, wherein a UE simultaneously connects to a macro-cell eNB and a small-cell eNB. The macro-cell eNB and the small-cell eNB are connected with each other by non-ideal backhaul. The macro-cell eNB configures a set of carrier components, such as CC1, and CC2, for the UE, and the small-cell eNB configures a set of carrier components, such as CC3 and CC4, for the UE.

[0005] However, in the 3 GPP LTE-Advanced Release 10/11, of the multiple serving cells aggregated by CA are controlled by the same eNB. The uplink control information (UCI) reporting has some rules, such as at most one physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) may convey the UCI, as well as the PUCCH carrying UCI and the PUSCH carrying UCI cannot be transmitted in the same subframe.

[0006] To realize a dual-connectivity with CA, the aggregated multiple serving cells need to be controlled by separate eNBs. Thus, the traditional CA technology should to be enhanced, such as the UCI are transmitted on multiple carrier components(CC), rather than only on the CC corresponding to the primary cell (PCC), which requires simultaneous transmission of multiple PUCCHs carrying UCI in parallel on different CCs, simultaneous transmission of multiple PUSCHs carrying UCI, as well as simultaneous transmission of PUCCH carrying UCI and PUSCH carrying UCI. As a result, the uplink power assignment mechanism for different physical channels (for example, different PUCCHs and PUSCHs) should be re-considered to support these new UCI multiplexing rules for CA.

[0007] In addition, due to different eNBs are aggregated in dual-connectivity networks, the pathloss from the macro-cell eNB to the desired UE is significantly different from the small-cell eNB to the desired UE, which may also impact the uplink power assignment for different physical channels.

[0008] However, in the current 3GPP LTE- Advanced Release 10/11, according to the introduction of CA, multiple PUSCHs may be transmitted in parallel on different CCs, and it is also possible that PUSCH and PUCCH are transmitted simultaneously on the same or different CCs.

[0009] In principle, each physical channel is separately and independently power controlled. The power control of each physical channel explicitly ensures that for a given CC, the total transmit power will not exceed the maximum per-carrier transmit p

power CMAK ,C However, the separate power control algorithm cannot ensure that the total transmit power of all CCs to be transmitted by UE does not exceed the maximum p

UE transmit power ^TMAX , corresponding to the UE power class. Of course, this could be ensured by applying the power scaling to the physical channels.

[00010] The basic strategy of UL power assignment is that any UCI has higher priority than data transmission. Consequently, UL power assignment rules for the physical channels carrying UCI in LTE- Advanced Release- 10/11 are summarized as follows:

• The power is first assigned to PUCCH according to its separate power control algorithm, if PUCCH exists;

• The power is first assigned to PUSCH carrying UCI according to its separate power control algorithm.

[00011] It should be noted that in the case of transmission of multiple PUSCHs in parallel, at least one PUSCH may include UCI. Also, there cannot be simultaneously transmission of PUCCH carrying UCI and PUSCH carrying UCI. Thus, there will never be any conflict between the above rules in Release 10/11.

[00012] If the remaining available transmit power is not sufficient to fulfill the power requirements of any remaining PUSCH to be transmitted, the powers of these remaining physical channels, which only carry data, are scaled so that the total power for all physical channels to be transmitted does not exceed the maximum UE output power. Overall, the PUSCH power scaling, including the priority of the PUSCH with UCI, can be expressed as:

^ ^Wc ^' PpUSCH ,c — ^TMAX ^~ ^ PUCCH

c

wherein ^ ^Ξ ΐ, ^Wc is the power scaling factor for the PUSCH on the carrier c, PpuccH denotes the power of PUCCH carrying UCI. For any PUSCH carrying UCI, the scaling factor ^c should be set 1. For the remaining PUSCH, the scaling factor ^c should be set to the same numerical value less than or equal to 1 to ensure that the above inequality is fulfilled.

[00013] However, in CA-based dual-connectivity systems, the above UL power assignment mechanism and the power scaling for only PUSCH carrying data is not appropriate due to the simultaneous transmission of multiple PUCCH carrying UCI and multiple PUSCH carrying UCI.

SUMMARY OF THE INVENTION [00014] An object of this invention is to provide a method and apparatus for assigning uplink power.

[00015] According to one aspect of this invention, there is provided a method for assigning uplink power in a mobile device, wherein the mobile device simultaneously connects to at least two network access devices via component carriers of every network access device, wherein said method comprising the following steps:

[00016] a. determining power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices;

[00017] b. assigning transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

[00018] According to another aspect of the invention, there is further provided a method for assisting a mobile device in assigning uplink power at a first network access device, wherein, said mobile device simultaneously connects to at least two network access devices by component carriers of every network access device, said mobile device connects to the first network access device through component carriers corresponding the first network access device, wherein said method comprising the following steps:

[00019] A. determining parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device, wherein the target connection is corresponding to the first network access device;

[00020] B . sending the parameter information of power scaling to said mobile device.

[00021] According to one aspect of this invention, there is further provided a mobile device for assigning uplink power, wherein, said mobile device simultaneously connects to at least two network access devices via component carriers of every network access device, wherein, said mobile device comprising:

[00022] a priority determination apparatus configured to determine power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; [00023] a power assignment apparatus configured to assign transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

[00024] According to another aspect of this invention, there is further provided a first network access device for assisting a mobile device in assigning uplink power, wherein, said mobile device simultaneously connects to at least two network access devices by component carriers of every network access device, said mobile device connects to the first network access device through component carriers corresponding the first network access device, wherein said method comprising the following steps:

[00025] a power parameter determination apparatus configured to determine parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device, wherein the target connection is corresponding to the first network access device;

[00026] a send apparatus configured to send the parameter information of power scaling to said mobile device.

[00027] According to a further aspect of this invention, there is further provided a system for assigning uplink power, wherein the system comprises the aforementioned a mobile device for assigning uplink power according to one aspect of this invention as above mentioned, and the aforementioned a first network device for assisting a mobile device in assigning uplink power according to another aspect of the invention.

[00028] Compared with the prior art, by determining power assignment priority information of every uplink physical channel of multiple target connections corresponding to a mobile device, so as to assign transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, this invention realizes an uplink power assigning method, so that the uplink power assignment method according to the invention may be applied to the situation of simultaneous transmission of multiple PUCCHs carrying UCI, simultaneous transmission of multiple PUSCHs carrying UCI, as well as simultaneous transmission of PUCCH carrying UCI and PUSCH carrying UCI in the same subframe, namely can be applied to the carrier aggregation-based dual-connectivity networks. Moreover, the invention may also determine power assignment priority information of very uplink physical channel of the multiple target connections according to information to be carried by the target connection, as well as the device priority information, thereby, this invention realizes an uplink power assigning method for supporting carrier aggregation-based dual-connectivity from the viewpoint of power efficiency

BRIEF DESCRIPTION OF THE DRAWINGS [00029] Other features, aims and advantages of this invention will become more apparent through reading the detailed statement of the non-restrictive embodiments made with reference to the following accompanying drawings:

[00030] Fig. 1 shows a schematic diagram of a CA-based dual-connectivity;

[00031] Fig. 2 shows a schematic diagram of a mobile device for assigning uplink power according to one aspect of the invention;

[00032] Fig. 3 shows a schematic diagram of a mobile device and a first network access device for assigning uplink power according to a preferred embodiment of the invention;

[00033] Fig. 4 shows a flowchart illustrating a method for assigning uplink power according to another aspect of the invention;

[00034] Fig. 5 shows a flowchart illustrating a method for assigning uplink power by a mobile device in cooperation with a first network access device according to a preferred embodiment of the invention.

[00035] The same or similar reference signs in the drawings represent the same or similar component parts.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[00036] Below, details of the invention will be further provided in combination with the accompanying drawings.

[00037] Fig. 2 shows a schematic diagram of a mobile device 1 for assigning uplink power according to one aspect of the invention, wherein the mobile device 1 simultaneously connects to at least two network access devices via component carriers of every network access device, wherein the mobile device 1 comprises a priority determination apparatus 11 and a power assignment apparatus 12. Specifically, the priority determination apparatus 11 determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; the power assignment apparatus 12 assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

[00038] Here, the user equipment refers to the part in mobile communication device, which terminates wireless transmission from or to the network and adapts the capability of a terminal device to the wireless transmission, i.e., the device for a user to access to the mobile network, which includes, but not limited to, any electronic product that performs human-machine interaction with the user through a keyboard, a touch pad, or a voice-control device, and implements transmission of mobile communication signals through mutual transmission and reception of signals between a mobile network and a base station, for example, a tablet, a smart mobile phone, a PDA, a vehicle mount computer, etc.. Here, the network access device includes, but not limited to, a base station, eNB, etc. Here, the mobile network includes, but not limited to, GSM, 3G, TD-LTE, Wi-Fi, WiMax, WCDMA, CDMA2000, TD-SCDMA, HSPA, LTE N LTE- Advanced, etc. Those skilled in the art should understand that the aforesaid mobile devices, network access devices, and mobile networks are only exemplary, other existing mobile devices, network access devices, and mobile networks or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00039] Specifically, the priority determination apparatus 11 determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices, such as determining power assignment priority information of every uplink physical channel of the multiple target connections based on information to be carried via the target connection. Here, the information to be carried includes uplink control information and/or data information to be transmitted by said mobile device. Here, the target connection is available for the mobile device to transmit uplink control information and/or uplink data to the corresponding network access device thereof, which includes, but not limited to, a carrier component CC configured to the mobile device, wherein each carrier component CC can be configured as one or more physical channels, such as, for an uplink, each carrier component CC can be configured as one or more uplink physical channels. Those skilled in the art should understand that the aforesaid target connection is only an example, and other existing target connection or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00040] Specifically, the priority determination apparatus 11 can according to information to be carried by the target connection, determine power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

[00041] For example, as shown in Fig. 1, the mobile device, for example, UE, simultaneously connects to at least two network access devices via carrier component s of every network access device, such as connects to a macro-cell eNB and a small-cell eNB. The macro-cell eNB and the small-cell eNB are connected with each other by non-ideal backhaul. The macro-cell eNB configures a set of carrier components (for example, CC1 and CC2) for UE, and the small-cell eNB configures a set of carrier components (for example, CC3 and CC4) for UE. The uplink carrier component of the UE is corresponding to the corresponding downlink carrier component thereof. The uplink carrier component CC1 is configured as multiple uplink physical channels, such as two PUCCHs and one PUSCH. The uplink carrier component CC2 is unanimously configured as PUSCH. The uplink carrier component CC3 is configured as multiple uplink physical channels, such as two PUCCHs and one PUSCH. The uplink carrier component CC4 is unanimously configured as PUSCH. Suppose both the UCIs transmitted to the small-cell eNB and macro-cell eNB are very essential to the system, the small-cell eNB and the macro-cell eNB have the same priority, there are corresponding to the following scenarios:

[00042] I) If UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, then the priority determination apparatus 11 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00043] II) If multiple PUCCHs of the multiple target connections, such as the parallel CCl to CC, corresponding to the UE are not transmitted in a sub frame, but the UCIs are transmitted through the multiple PUSCHs of CCl to CC4, suppose UCIs are transmitted through the PUSCH of CCl and through the PUSCH of CC3, then the priority determination apparatus 11 determines that the power assignment priority corresponding to the PUSCH carrying UCI of CCl and the PUSCH carrying UCI of CC3 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00044] III) If the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, then the priority determination apparatus 11 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 and the uplink physical channel PUSCH carrying UCI of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00045] Those skilled in the art should understand that the aforesaid manners of determining said power assignment priority information is only exemplary, and other existing manners of determining said power assignment priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00046] In one preferred embodiment (see Fig. 2), the priority determination apparatus 11 can also according to information to be carried by the target connection, and channel type information of every uplink physical channel corresponding to the target connection, determining power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices. For example, suppose, the network connection as shown in Fig. 1, for the aforesaid scenario III, if the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as parallel CCl to CC4, corresponding to the UE, then the priority determination apparatus 11 can determine the power assignment priority information of said every uplink physical channel of multiple target connections along with the channel type information of the uplink physical channel carrying UCI corresponding to target connections CCl to CC4, for example, first determining that the PUCCH carrying UCI has a higher power assignment priority than the PUSCH carrying UCI, or, the PUCCH carrying UCI and the PUSCH carrying UCI have the same power assignment priority, or the PUCCH carrying UCI has a lower power assignment priority than the PUSCH carrying UCI; then, the priority determination apparatus 11 determines that the uplink physical channel PUSCH carrying data information of CCl to CC4 have a lowest power assignment priority

[00047] Those skilled in the art should understand that the aforesaid manner of determining the power assignment priority information along with the channel type information is only exemplary, and any existing manner of determining the power assignment priority information along with the channel type information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00048] In another preferred embodiment (see Fig. 2), when said multiple target connections include a primary cell and/or a secondary cell, the priority determination apparatus 11 can also determine power assignment priority information of every uplink physical channel of the multiple target connections according to information to be carried by the target connection, as well as priority information of said cell, wherein, the power assignment priority corresponding to a primary cell carrying the uplink control information is higher than the power assignment priority corresponding to a secondary cell carrying the uplink control information. Here, priority information of said cells may be predetermined or determined based on the cell index information corresponding to the cells. For example, a cell with lower cell index information corresponding to a higher cell priority. Those skilled in the art should understand that the aforesaid manner of determining cell priority information is only exemplary, and any existing manner of determining cell priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00049] For example, suppose the macro-cell eNB configures a set of carrier components such as CCl, CC2, CC5 for the UE, the small-cell eNB configures a set of carrier components such as CC3, CC4, CC6 for the UE, suppose the macro-cell eNB configures CCl as a primary cell (PCell), while CC2 and CC5 as secondary cells (SCell), and the small-cell eNB configures CC3 as a primary cell, while CC4 and CC6 as secondary cells. Here, the illustration is only made with the set of carrier components corresponding to the macro-cell eNB as an example. Suppose UCI is transmitted simultaneously through every uplink physical channel of CCl and CC2, then the priority determination apparatus 11 determines that the power assignment priority of every uplink physical channel carrying UCI of CCl is higher than the power assignment priority of every uplink physical channel carrying UCI of CC2; for another example, suppose CCl does not carry UCI, but UCI is transmitted simultaneously through CC2 and CC5, while the cell index information of CC2 is lower than the cell index information of CC5, then the priority determination apparatus 11 can determine that the power assignment priority of every uplink physical channel carrying UCI of CC2 is higher than the power assignment priority of every uplink physical channel carrying UCI of CC5. As another example, suppose UE simultaneously sends UCI-macro, which is corresponding to the macro-cell eNB, to the macro-cell eNB through CCl, and sends UCI-small, which is corresponding to the small-cell eNB, to the small-cell eNB through CC3, then the priority determination apparatus 11 can determine that the power assignment priority of every uplink physical channel carrying UCI-macro of CCl is higher than the power assignment priority of every uplink physical channel carrying UCI-small of CC3, because CCl is a primary cell and CC3 is also a primary cell.

[00050] Those skilled in the art should understand that the aforesaid manners of determining power assignment priority information along with priority information of said cell is only exemplary, and other existing manners of determining power assignment priority information along with priority information of said cell or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00051] In another preferred embodiment (see Fig. 2), the mobile device 1 further comprises a device priority determination apparatus (not shown). Specifically, the device priority determination apparatus determines device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection, wherein the priority determination apparatus 11 according to information to be carried by the target connection, as well as the device priority information , determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

[00052] Specifically, the device priority determination apparatus determines device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection, for example, the device priority of a network access device with a lower pathloss is higher than the device priority of a network access device with a higher pathloss, or the device priority of a network access device with a lower pathloss is lower than the device priority of a network access device with a higher pathloss. For example, suppose, the pathloss from UE to macro-cell eNB is significantly different from the pathloss from the UE to the small-cell eNB, such as the pathloss from the UE to the small-cell eNB is far less than the pathloss from the UE to the macro-cell eNB, then the device priority determination apparatus may determine that the small-cell eNB has a higher device priority than the macro-cell eNB; for another example, suppose the pathloss from the UE to the small-cell eNB is far more than the pathloss from the UE to the macro-cell eNB, then the device priority determination apparatus may determine that the small-cell eNB has a higher device priority than the macro -cell eNB.

[00053] Those skilled in the art should understand that aforesaid manner of determining device priority information is only exemplary, and other existing manner of determining device priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00054] Next, the priority determination apparatus 11 according to information to be carried by the target connection, as well as the device priority information , determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices. For example, continue the above example, the device priority determination apparatus determines that the small-cell eNB has a higher device priority than the macro-cell eNB, then the priority determination apparatus 11 may determine that the uplink physical channels carrying UCI (including PUCCH and PUSCH carrying UCI) to the small-cell eNB has a higher power assignment priority than the uplink physical channels carrying UCI (including PUCCH and PUSCH carrying UCI) to the macro-cell eNB, and the uplink physical channel PUSCH carrying data information has the lowest power assignment priority; or, the priority determination apparatus 11 may determine that the uplink physical channel carrying UCI to the small-cell eNB has the highest power assignment priority, followed by the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, and the power assignment priority of the uplink physical channel carrying UCI to the macro-cell eNB is lower than the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, and the power assignment priority of the uplink physical channel PUSCH carrying data information to the macro-cell eNB is the lowest.

[00055] Those skilled in the art should understand that the aforesaid manner of determining the power assignment priority information along with the device priority information is only exemplary, and other existing manners of determining the power assignment priority information along with the device priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00056] The priority assignment apparatus 12 assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, for example, assigning transmission power for said every uplink physical channel of multiple target connections in consideration of the power scaling parameter information assigned by the network access device corresponding to the target connection for every uplink physical channel of the target connections.

[00057] For example, for the above scenario I) in which UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, the priority determination apparatus 11 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4, then the power assignment apparatus 12 may first assign transmission power to the uplink physical channel PUCCH of CCl to CC4 in consideration with the maximum UE output power information P_TMAX , according to the following equation (1):

∑ Si PpuccHj — ^PTMAX

(1 ) wherein gi^ l, gi denotes parameter information of power scaling, namely the power scaling factor, of the PUCCH carrying UCI on the carrier z; then, the power assignment apparatus 12 assigns the remaining power to the PUSCH carrying data information, as shown in equation (2):

/ . ^Wc ^{' P}PUSCH ,c — ^PTMAX ~ , § ^{' P} PUCCH, i

c i (2)

[00058] For another example, in the above scenario II), multiple PUCCHs of the multiple target connections, such as the parallel CC l to CC, corresponding to the UE are not transmitted in a subframe, but the UCIs are transmitted through the multiple PUSCHs of CC l to CC4, the priority determination apparatus 11 determines that the power assignment priority corresponding to the PUSCH carrying UCI of CC l and the PUSCH carrying UCI of CC3 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4, then the power assignment apparatus 12 first assigns transmission power to the PUSCH carrying UCI of CC l to CC4, as shown in equation (3) below:

∑ q_l ^■ P puscH < P_TMAX

Then, the power assignment apparatus 12 assigns the remaining power to the PUSCH carrying data information, as shown in equation (4) below:

Σ ^Wc ^{■ P}PUSCH ,c ^{≤ P}TMAX ~ Σ 1 j ^{' P} ' PUSCHJ (4) wherein, ¾≤; 1 > ^c≤- l , P_{PUSCH j} denotes the transmission power of PUSCH

p

carrying UCI transmitted on the j^'-th CC, PUSCH , denotes transmission power of the PUSCH carrying data transmitted on the c-th CC.

[00059] For another example, in the above scenario III) , the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, the priority determination apparatus 11 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 and the power assignment priority corresponding to the uplink physical channel PUSCH carrying UCI of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4., then the power assignment apparatus 12 first assigns transmission power to the PUCCH carrying UCI and the PUSCH carrying UCI, as shown in equation (5) below:

∑ 8i^{■ P}puccH,i

Qj ^■ P PUSCH, j≤ TMAX (5)

Then, the power assignment apparatus 12 assigns the remaining power to the PUSCH carrying data information, as shown in equation (6) below: 4 j ^' P PUSCH ,j (6)

wherein gi ^ l , ^ ^Ξ ΐ , when g, = which could enable the same transmission power assignment to the PUCCH carrying UCI and the PUSCH carrying UCI.

[00060] For another example, for the above scenario in which the power assignment priority corresponding to the primary cell carrying the uplink control information is higher than the power assignment priority corresponding to the secondary cell carrying the uplink control information, suppose the PUCCH carrying UCI and the PUSCH carrying UCI have the same power assignment priority, then the power assignment apparatus 12 first assigns transmission power to the physical channel carrying UCI of the PCell, as shown in equation (7) below:

Σ¾ ' ^UCI _ SCell,k ~ ^TMAX ~ ^UCI _ PCell

k

Then, the power assignment apparatus 12 assigns the remaining power to the PUSCH carrying data, as shown in equation (8) below:

Σ ^Wc ^' PpUSCH .c — ^TMAX ~ ^UCI _ PCeU ~ Σ ' ^UCI _ SCett,k (^) c k wherein ^ 1 , ^w° 1 , ^^k denotes the power scaling factor on carrier k for the PUCCH carrying UCI of SCell.

[00061] Those skilled in the art should understand that the aforesaid manner of assigning transmission power for said every uplink physical channel of multiple target connections is only exemplary, and other existing manner of assigning transmission power for said every uplink physical channel of multiple target connections or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00062] The various apparatus of the mobile device 1 works continuously between each other. Specifically, the priority determination apparatus 11 continuously determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; the power assignment apparatus 12 continuously assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device. Here, those skilled in the art should understand that "continuously" means the various apparatus of the mobile device 1 continuously determines power assignment priority information, assigns transmission power for every uplink physical channel , till the mobile device 1 stops determining power assignment priority information within a relatively long time.

[00063] Fig. 3 shows a schematic diagram of a mobile devicel and a first network access device 2 for assigning uplink power according to a preferred embodiment of the invention, wherein the mobile device 1 simultaneously connects to at least two network access devices via component carriers of every network access device , the mobile device 1 connects to the first network device 2 through component carriers corresponding to the first network access device 2, wherein the mobile device 1 comprises a priority determination apparatus 1 , a power assignment apparatus 12', and a receiving apparatus 13', and the first network access device 2 comprises a power parameter determination apparatus 21 ' and a sending apparatus 22'. Specifically, the power parameter determination apparatus 21 ' of the first network access device 2 determines parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device 1, wherein the target connection is corresponding to the first network access device 2; the sending apparatus 22' sends the power scaling parameter information to the mobile device 1; correspondingly, the receiving apparatus 13' of the mobile device 1 receives from the network access device corresponding to said mobile device, parameter information of power scaling corresponding to the target connection; the priority determination apparatus 11 ' determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; the power assignment apparatus 12' assigns transmission power for very uplink physical channel of said multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, as well as parameter information of power scaling corresponding to very uplink physical channel of said multiple target connections. Here, the content of the priority determination apparatus 11 ' of the mobile device 1 is identical or basically identical with the corresponding apparatus in the embodiment of Fig. 2, in order for simplicity, details are no longer described and only included here in a way of quotation.

[00064] Here, the first network access device 2 includes, but not limited to, a base station, eNB, etc. The first network access device 2 only refers to one of multiple network access devices to which the UE is simultaneously connected, rather than the particular one of the multiple network access devices to which the UE is simultaneously connected. The multiple network access devices to which the UE is simultaneously connected may simultaneously send corresponding power scaling parameter information of each uplink physical channel to UE. For example, when the macro-cell eNB sends, to the UE, the power scaling parameter information of every uplink physical channel of the target connections, such as CC1 and CC2, corresponding to the macro-cell eNB, the small-cell eNB may simultaneously send, to the UE, the power scaling parameter information of every uplink physical channel over the target connections, such as CC3 and CC4, corresponding to the small-cell eNB. Those skilled in the art should understand that the aforesaid the first network access device is only exemplary, and other existing the first network access device or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00065] Specifically, the power parameter determination apparatus 21 ' of the first network access device 2 determines parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device 1 , wherein, the target connection is corresponding to the first network access device 2. For example, as shown in Fig. 1, the mobile device such as UE simultaneously connects to at least two network access devices via carrier component s of every network access device, such as connects to a macro-cell eNB and a small-cell eNB. The macro-cell eNB and the small-cell eNB are connected with each other by non-ideal backhaul. Suppose UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CC1 to CC4, corresponding to the UE, for example, UCIs are to be carried only through one PUCCH1 of CC1 corresponding to the macro-cell eNB and one PUCCH3 of CC3 corresponding to the small-cell eNB, if the sum of transmission power of the two PUCCHs PUCCH1 and PUCCH3 exceeds the maximum output power of the mobile device UE, but the two PUCCHs have the same power scaling parameter, then the power parameter determination apparatus 21 ' of the first network access device 2 such as the macro-cell eNB can determine that the power scaling parameter information corresponding to the PUCCH1 = the maximum UE output power/ (P_PUCCHI+P_PUCCH3), or by calling an application program interface (API) provided by other network access devices such as small-cell eNB to which the UE simultaneously connects, wherein the API is about the corresponding power scaling parameter information determined for every uplink physical channel of the target connections of all network access devices, to obtain the power scaling parameter information corresponding to PUCCH1 = maximum UE output power/ (P_PUCC_HI+P_PUCC_H3), and the power parameter determination apparatus 21 ' of the first network access device 2, such as the small-cell eNB, can determine that the power scaling parameter information corresponding to PUCCH3 = maximum UE output power/ (P_PUCC_HI+P_PUCC_H3); for another example, if the sum of transmission powers of the two PUCCHs PUCCH1 and PUCCH3 does not exceed the maximum output power of the mobile device UE, then the first network access device 2, such as macro-cell eNB, can determine that the power scaling parameter information corresponding to the PUCCH1 = 1, the power scaling parameter information corresponding to PUCCH3 = 1, and the remaining power is then assigned to multiple PUSCHs carrying data information, and every PUSCH has the same power scaling parameter information, thereby the power scaling parameter information of each PUSCH = (maximum UE output power - PPUCCHI- Ppuccm) / (PPUSCHI+PPUSCH2+- · · )· [00066] Those skilled in the art should understand that the aforesaid manner of determining the power scaling parameter information is only exemplary, and other existing manner of determining the power scaling parameter information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00067] The sending apparatus 22' sends the power scaling parameter information to the mobile device 1 through a mobile network such as GSM, 3G, TD-LTE, etc.; or the sending apparatus 22' may first send the power scaling parameter information to other network access device that connects to the first network access device 2 through a non-ideal backhaul, and then this network access device sends the power scaling parameter information to the mobile device 1.

[00068] Correspondingly, the receiving apparatus 13 'of the mobile device 1 receives, from the network access device corresponding to said target connection, parameter information of power scaling corresponding to the target connection, through a mobile network such as GSM, 3G, TD-LTE, etc.

[00069] The power assignment apparatus 12' assigns transmission power for very uplink physical channel of said multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, as well as parameter information of power scaling corresponding to very uplink physical channel of said multiple target connections.

[00070] For example, suppose the priority determination apparatus 11 ' determines that the uplink physical channel (including PUCCH and PUSCH carrying UCI) carrying UCI to the small-cell eNB has a higher power assignment priority than the uplink physical channel (including PUCCH and PUSCH carrying UCI) carrying UCI to the macro-cell eNB, the uplink physical channel PUSCH carrying data information has the lowest power assignment priority; then the power assignment apparatus 12' first assigns transmission power to the uplink physical channel carrying UCI to the small-cell eNB, as shown in equation (9) below:

P UCI _macro < P TMAX - P ¹ UCI _ small (9)

Then, the power assignment apparatus 12' assigns transmission power to the uplink physical channel to the macro-cell eNB carrying UCI; finally, the power assignment apparatus 12' assigns transmission power to the uplink physical channel carrying data information, as shown in equation (10) below:

∑ _c - R PUSCH , c < P TMAX - P ¹ UCI _ small - P UCI _ macro (10) wherein ^w° ^ l , ^ denotes the parameter information of power scaling, namely power scaling factor, of PUSCH carrying data information on the c-th CC, p

ucⁱ d_enot_es transmission power of a physical channel (including PUCCH and p

PUSCH) carrying UCI to the macro-cell eNB, and ^ua-^smal1 denotes transmission power of a physical channel carrying UCI to the small-cell eNB.

[00071] For another example, suppose the priority determination apparatus 11 ' determines that the uplink physical channel carrying UCI to the small-cell eNB and has the highest power assignment priority, followed by the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, the power assignment priority of the uplink physical channel carrying UCI to the macro-cell eNB is lower than the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB , the power assignment priority of the uplink physical channel PUSCH carrying data information to the macro-cell eNB has the lowest power assignment priority, then the power assignment apparatus 12' first assigns transmission power to the uplink physical channel carrying UCI to the small-cell eNB, and then assigns transmission power to the uplink physical channel PUSCH carrying data information to the small-cell eNB, as shown in equation (11) below:

∑w ^vvi P PUSCH _ mall ,i < ~ P TMAX - P ¹ UCI _ small ( V)

And then, the power assignment apparatus 12' assigns transmission power to the uplink physical channel carrying UCI to the macro-cell eNB, and next, assigns transmission power to the uplink physical channel PUSCH carrying data information to the macro-cell eNB, as shown in equation (12) below:

Wherein w,. ^ 1 » w. ^ l, w₍ denotes the parameter information of power scaling of PUSCH carrying data information to the small-cell eNB on the z^'-th CC, w_; denotes the parameter information of power scaling of PUSCH carrying data information macro-cell eNB on the j^'-th CC.

[00072] Those skilled in the art should understand that in specific embodiments, the priority determination apparatus 11 ' and the receiving apparatus 13' of the mobile device 1 may process in parallel or in series. [00073] Fig. 4 shows a flowchart illustrating a method for assigning uplink power according to another aspect of the invention.

[00074] wherein the mobile device 1 simultaneously connects to at least two network access devices via component carriers of every network access device. Specifically, in the step S I, the mobile device 1 determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; in the step S2, the mobile device 1 assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

[00075] Here, the user equipment refers to the part in mobile communication device, which terminates wireless transmission from or to the network and adapts the capability of a terminal device to the wireless transmission, i.e., the device for a user to access to the mobile network, which includes, but not limited to, any electronic product that performs human-machine interaction with the user through a keyboard, a touch pad, or a voice-control device, and implements transmission of mobile communication signals through mutual transmission and reception of signals between a mobile network and a base station, for example, a tablet, a smart mobile phone, a PDA, a vehicle mount computer, etc.. Here, the network access device includes, but not limited to, a base station, eNB, etc. Here, the mobile network includes, but not limited to, GSM, 3G, TD-LTE, Wi-Fi, WiMax, WCDMA, CDMA2000, TD-SCDMA, HSPA, LTE N LTE- Advanced, etc. Those skilled in the art should understand that the aforesaid mobile devices, network access devices, and mobile networks are only exemplary, other existing mobile devices, network access devices, and mobile networks or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00076] Specifically, in the step S I, the mobile device 1 determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices, such as determining power assignment priority information of every uplink physical channel of the multiple target connections based on information to be carried via the target connection. Here, the information to be carried includes uplink control information and/or data information to be transmitted by said mobile device. Here, the target connection is available for the mobile device to transmit uplink control information and/or uplink data to the corresponding network access device thereof, which includes, but not limited to, a carrier component CC configured to the mobile device, wherein each carrier component CC can be configured as one or more physical channels, such as, for an uplink, each carrier component CC can be configured as one or more uplink physical channels. Those skilled in the art should understand that the aforesaid target connection is only an example, and other existing target connection or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00077] Specifically, in the step S I, the mobile device 1 can according to information to be carried by the target connection, determine power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

[00078] For example, as shown in Fig. 1, the mobile device, for example, UE, simultaneously connects to at least two network access devices via carrier component s of every network access device, such as connects to a macro-cell eNB and a small-cell eNB. The macro-cell eNB and the small-cell eNB are connected with each other by non-ideal backhaul. The macro-cell eNB configures a set of carrier components (for example, CCl and CC2) for UE, and the small-cell eNB configures a set of carrier components (for example, CC3 and CC4) for UE. The uplink carrier component of the UE is corresponding to the corresponding downlink carrier component thereof. The uplink carrier component CCl is configured as multiple uplink physical channels, such as two PUCCHs and one PUSCH. The uplink carrier component CC2 is unanimously configured as PUSCH. The uplink carrier component CC3 is configured as multiple uplink physical channels, such as two PUCCHs and one PUSCH. The uplink carrier component CC4 is unanimously configured as PUSCH. Suppose both the UCIs transmitted to the small-cell eNB and macro-cell eNB are very essential to the system, the small-cell eNB and the macro-cell eNB have the same priority, there are corresponding to the following scenarios:

[00079] I) If UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, then in the step S I, the mobile device 1 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00080] II) If multiple PUCCHs of the multiple target connections, such as the parallel CCl to CC, corresponding to the UE are not transmitted in a sub frame, but the UCIs are transmitted through the multiple PUSCHs of CCl to CC4, suppose UCIs are transmitted through the PUSCH of CCl and through the PUSCH of CC3, then in the step S I, the mobile device 1 determines that the power assignment priority corresponding to the PUSCH carrying UCI of CCl and the PUSCH carrying UCI of CC3 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00081] III) If the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as the parallel CCl to CC4, corresponding to the UE, then in the step S I, the mobile device ldetermines that the power assignment priority corresponding to the uplink physical channel PUCCH of CCl to CC4 and the uplink physical channel PUSCH carrying UCI of CCl to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4.

[00082] Those skilled in the art should understand that the aforesaid manners of determining said power assignment priority information is only exemplary, and other existing manners of determining said power assignment priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00083] In one preferred embodiment (see Fig. 4), in the step S I, the mobile device 1 can also according to information to be carried by the target connection, and channel type information of every uplink physical channel corresponding to the target connection, determining power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices. For example, suppose, the network connection as shown in Fig. 1, for the aforesaid scenario III, if the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as parallel CCl to CC4, corresponding to the UE, then in the step S I, the mobile device 1 can determine the power assignment priority information of said every uplink physical channel of multiple target connections along with the channel type information of the uplink physical channel carrying UCI corresponding to target connections CCl to CC4, for example, first determining that the PUCCH carrying UCI has a higher power assignment priority than the PUSCH carrying UCI, or, the PUCCH carrying UCI and the PUSCH carrying UCI have the same power assignment priority, or the PUCCH carrying UCI has a lower power assignment priority than the PUSCH carrying UCI; then, in the step S I, the mobile device 1 determines that the uplink physical channel PUSCH carrying data information of CCl to CC4 have a lowest power assignment priority.

[00084] Those skilled in the art should understand that the aforesaid manner of determining the power assignment priority information along with the channel type information is only exemplary, and any existing manner of determining the power assignment priority information along with the channel type information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00085] In another preferred embodiment (see Fig. 4), when said multiple target connections include a primary cell and/or a secondary cell, in the step S I, the mobile device 1 can also determine power assignment priority information of every uplink physical channel of the multiple target connections according to information to be carried by the target connection, as well as priority information of said cell, wherein, the power assignment priority corresponding to a primary cell carrying the uplink control information is higher than the power assignment priority corresponding to a secondary cell carrying the uplink control information. Here, priority information of said cells may be predetermined or determined based on the cell index information corresponding to the cells. For example, a cell with lower cell index information corresponding to a higher cell priority. Those skilled in the art should understand that the aforesaid manner of determining cell priority information is only exemplary, and any existing manner of determining cell priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00086] For example, suppose the macro-cell eNB configures a set of carrier components such as CCl, CC2, CC5 for the UE, the small-cell eNB configures a set of carrier components such as CC3, CC4, CC6 for the UE, suppose the macro-cell eNB configures CCl as a primary cell (PCell), while CC2 and CC5 as secondary cells (SCell), and the small-cell eNB configures CC3 as a primary cell, while CC4 and CC6 as secondary cells. Here, the illustration is only made with the set of carrier components corresponding to the macro-cell eNB as an example. Suppose UCI is transmitted simultaneously through every uplink physical channel of CCl and CC2, then in the step S I, the mobile device 1 determines that the power assignment priority of every uplink physical channel carrying UCI of CCl is higher than the power assignment priority of every uplink physical channel carrying UCI of CC2; for another example, suppose CCl does not carry UCI, but UCI is transmitted simultaneously through CC2 and CC5, while the cell index information of CC2 is lower than the cell index information of CC5, then in the step S I, the mobile device 1 can determine that the power assignment priority of every uplink physical channel carrying UCI of CC2 is higher than the power assignment priority of every uplink physical channel carrying UCI of CC5. As another example, suppose UE simultaneously sends UCI-macro, which is corresponding to the macro-cell eNB, to the macro-cell eNB through CCl, and sends UCI-small, which is corresponding to the small-cell eNB, to the small-cell eNB through CC3, then in the step S I, the mobile device 1 can determine that the power assignment priority of every uplink physical channel carrying UCI-macro of CCl is higher than the power assignment priority of every uplink physical channel carrying UCI-small of CC3, because CCl is a primary cell and CC3 is also a primary cell.

[00087] Those skilled in the art should understand that the aforesaid manners of determining power assignment priority information along with priority information of said cell is only exemplary, and other existing manners of determining power assignment priority information along with priority information of said cell or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00088] In another preferred embodiment (see Fig. 4), the mobile device 1 further comprises the step S5 (not shown). Specifically, in the step S5, the mobile device 1 determines device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection, wherein in the step S I, the mobile device 1 according to information to be carried by the target connection, as well as the device priority information , determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

[00089] Specifically, in the step S5, the mobile device 1 determines device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection, for example, the device priority of a network access device with a lower pathloss is higher than the device priority of a network access device with a higher pathloss, or the device priority of a network access device with a lower pathloss is lower than the device priority of a network access device with a higher pathloss. For example, suppose, the pathloss from UE to macro-cell eNB is significantly different from the pathloss from the UE to the small-cell eNB, such as the pathloss from the UE to the small-cell eNB is far less than the pathloss from the UE to the macro-cell eNB, then in the step S5, the mobile device 1 may determine that the small-cell eNB has a higher device priority than the macro-cell eNB; for another example, suppose the pathloss from the UE to the small-cell eNB is far more than the pathloss from the UE to the macro-cell eNB, then in the step S5, the mobile device 1 may determine that the small-cell eNB has a higher device priority than the macro-cell eNB.

[00090] Those skilled in the art should understand that aforesaid manner of determining device priority information is only exemplary, and other existing manner of determining device priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00091] Next, in the step S I, the mobile device laccording to information to be carried by the target connection, as well as the device priority information , determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices. For example, continue the above example, in the step S5, the mobile device 1 determines that the small-cell eNB has a higher device priority than the macro-cell eNB, then in the step SI, the mobile device 1 may determine that the uplink physical channels carrying UCI (including PUCCH and PUSCH carrying UCI) to the small-cell eNB has a higher power assignment priority than the uplink physical channels carrying UCI (including PUCCH and PUSCH carrying UCI) to the macro-cell eNB, and the uplink physical channel PUSCH carrying data information has the lowest power assignment priority; or, in the step S I, the mobile device 1 may determine that the uplink physical channel carrying UCI to the small-cell eNB has the highest power assignment priority, followed by the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, and the power assignment priority of the uplink physical channel carrying UCI to the macro-cell eNB is lower than the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, and the power assignment priority of the uplink physical channel PUSCH carrying data information to the macro-cell eNB is the lowest.

[00092] Those skilled in the art should understand that the aforesaid manner of determining the power assignment priority information along with the device priority information is only exemplary, and other existing manners of determining the power assignment priority information along with the device priority information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00093] In the step S2, the mobile device 1 assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, for example, assigning transmission power for said every uplink physical channel of multiple target connections in consideration of the power scaling parameter information assigned by the network access device corresponding to the target connection for every uplink physical channel of the target connections.

[00094] For example, for the above scenario I) in which UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CC1 to CC4, corresponding to the UE, in the step S I , the mobile device 1 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CC 1 to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CC1 to CC4, then in the step S2, the mobile device 1 may first assign transmission power to the uplink physical channel PUCCH of CC1 to CC4 in consideration with the maximum UE output power information P_TMAX , according to the following equation (13):

∑s _f PUCCH , i — P TiMAX

( 13) wherein gi^ l, gi denotes parameter information of power scaling, namely the power scaling factor, of the PUCCH carrying UCI on the carrier z; then, in the step S2, the mobile device 1 assigns the remaining power to the PUSCH carrying data information, as shown in equation (14): c (14) [00095] For another example, in the above scenario II), multiple PUCCHs of the multiple target connections, such as the parallel CC l to CC, corresponding to the UE are not transmitted in a subframe, but the UCIs are transmitted through the multiple PUSCHs of CC l to CC4, in the step S I, the mobile device 1 determines that the power assignment priority corresponding to the PUSCH carrying UCI of CC l and the PUSCH carrying UCI of CC3 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CCl to CC4, then in the step S2, the mobile device 1 first assigns transmission power to the PUSCH carrying UCI of CC l to CC4, as shown in equation (15) below:

∑qj - P^puscH < P_TMAX

(15)

Then, in the step S2, the mobile device 1 assigns the remaining power to the PUSCH carrying data information, as shown in equation (16) below:

Σ ^Wc ^{■ P}PUSCH ,c ^{≤ P}TMAX ~ Σ 4, ' ^P PUSCH , j (16) c≠j j wherein, ¾≤; 1 > ^Wc ^ l » P_{PUSCH j} denotes the transmission power of PUSCH

p

[00096] For another example, in the above scenario III) , the PUCCH carrying UCI and the PUSCH carrying UCI are simultaneously transmitted on multiple target connections, such as the parallel CC l to CC4, corresponding to the UE, in the step S I, the mobile device 1 determines that the power assignment priority corresponding to the uplink physical channel PUCCH of CC l to CC4 and the power assignment priority corresponding to the uplink physical channel PUSCH carrying UCI of CC l to CC4 are higher than the power assignment priority corresponding to the uplink physical channel PUSCH carrying data information of CC l to CC4., then in the step S2, the mobile device 1 first assigns transmission power to the PUCCH carrying UCI and the PUSCH carrying UCI, as shown in equation (17) below:

∑ Si ^{■ P} * pPuUcCcC_HH ,,ii

,^] <— P -* _TJ_lMAX (17) i j

Then, in the step S2, the mobile device 1 assigns the remaining power to the PUSCH carrying data information, as shown in equation (18) below:

^{' P}PUCCH ,i -∑qj - PpuscH (18) c≠j ' j wherein gi ^ l , ^c ^i l , when g, = ¾, which could enable the same transmission power assignment to the PUCCH carrying UCI and the PUSCH carrying UCI.

[00097] For another example, for the above scenario in which the power assignment priority corresponding to the primary cell carrying the uplink control information is higher than the power assignment priority corresponding to the secondary cell carrying the uplink control information, suppose the PUCCH carrying UCI and the PUSCH carrying UCI have the same power assignment priority, then in the step S2, the mobile device 1 first assigns transmission power to the physical channel carrying UCI of the PCell, as shown in equation (19) below:

Then, the in the step S2, the mobile device 1 assigns the remaining power to the PUSCH carrying data, as shown in equation (20) below:

Σ ^ W (20) wherein ^ 1 , ^w° 1 , ^^k denotes the power scaling factor on carrier k for the

PUCCH carrying UCI of SCell.

[00098] Those skilled in the art should understand that the aforesaid manner of assigning transmission power for said every uplink physical channel of multiple target connections is only exemplary, and other existing manner of assigning transmission power for said every uplink physical channel of multiple target connections or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[00099] The various steps of the mobile device 1 works continuously between each other. Specifically, in the step S I, the mobile device 1 continuously determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; in the step S2, the mobile device 1 continuously assigns transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device. Here, those skilled in the art should understand that "continuously" means the various steps of the mobile device 1 continuously determines power assignment priority information, assigns transmission power for every uplink physical channel , till the mobile device 1 stops determining power assignment priority information within a relatively long time.

[000100] Fig. 5 shows a flowchart illustrating a method for assigning uplink power by a mobile device in cooperation with a first network access device according to a preferred embodiment of the invention.

[000101] wherein the mobile device 1 simultaneously connects to at least two network access devices via component carriers of every network access device , the mobile device 1 connects to the first network device 2 through component carriers corresponding to the first network access device 2. Specifically, in the step S3', the first network access device 2 determines parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device 1 , wherein the target connection is corresponding to the first network access device 2; in the step S4', the first network access device 2 sends the power scaling parameter information to the mobile device 1 ; correspondingly, the mobile device 1 receives from the network access device corresponding to said mobile device, parameter information of power scaling corresponding to the target connection; in the step S I ' , the mobile device 1 determines power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices; in the step S2', the mobile device lassigns transmission power for very uplink physical channel of said multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, as well as parameter information of power scaling corresponding to very uplink physical channel of said multiple target connections. Here, the content of the step S I ' of the mobile device 1 is identical or basically identical with the corresponding step in the embodiment of Fig. 4, in order for simplicity, details are no longer described and only included here in a way of quotation.

[000102] Here, the first network access device 2 includes, but not limited to, a base station, eNB, etc. The first network access device 2 only refers to one of multiple network access devices to which the UE is simultaneously connected, rather than the particular one of the multiple network access devices to which the UE is simultaneously connected. The multiple network access devices to which the UE is simultaneously connected may simultaneously send corresponding power scaling parameter information of each uplink physical channel to UE. For example, when the macro-cell eNB sends, to the UE, the power scaling parameter information of every uplink physical channel of the target connections, such as CC1 and CC2, corresponding to the macro-cell eNB, the small-cell eNB may simultaneously send, to the UE, the power scaling parameter information of every uplink physical channel over the target connections, such as CC3 and CC4, corresponding to the small-cell eNB. Those skilled in the art should understand that the aforesaid the first network access device is only exemplary, and other existing the first network access device or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[000103] Specifically, in the step S3' , the first network access device 2 determines parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device 1 , wherein, the target connection is corresponding to the first network access device 2. For example, as shown in Fig. 1, the mobile device such as UE simultaneously connects to at least two network access devices via carrier component s of every network access device, such as connects to a macro-cell eNB and a small-cell eNB. The macro-cell eNB and the small-cell eNB are connected with each other by non-ideal backhaul. Suppose UCIs are to be transmitted only through multiple PUCCHs of the multiple target connections, such as the parallel CC1 to CC4, corresponding to the UE, for example, UCIs are to be carried only through one PUCCH1 of CC1 corresponding to the macro-cell eNB and one PUCCH3 of CC3 corresponding to the small-cell eNB, if the sum of transmission power of the two PUCCHs PUCCH1 and PUCCH3 exceeds the maximum output power of the mobile device UE, but the two PUCCHs have the same power scaling parameter, then in the step S3', the first network access device 2 such as the macro-cell eNB can determine that the power scaling parameter information corresponding to the PUCCH1 = the maximum UE output power/ (P_PUCCHI+P_PUCCH3), or by calling an application program interface (API) provided by other network access devices such as small-cell eNB to which the UE simultaneously connects, wherein the API is about the corresponding power scaling parameter information determined for every uplink physical channel of the target connections of all network access devices, to obtain the power scaling parameter information corresponding to PUCCH1 = maximum UE output power/ (P_PUCC_HI+P_PUCC_H3), and in the step S3', the first network access device 2, such as the small-cell eNB, can determine that the power scaling parameter information corresponding to PUCCH3 = maximum UE output power/ (P_PUCC_HI+P_PUCC_H3); for another example, if the sum of transmission powers of the two PUCCHs PUCCH1 and PUCCH3 does not exceed the maximum output power of the mobile device UE, then the first network access device 2, such as macro-cell eNB, can determine that the power scaling parameter information corresponding to the PUCCH1 = 1, the power scaling parameter information corresponding to PUCCH3 = 1, and the remaining power is then assigned to multiple PUSCHs carrying data information, and every PUSCH has the same power scaling parameter information, thereby the power scaling parameter information of each PUSCH = (maximum UE output power - Ppuccm- Ppuccro) /

(PpUSCHl+PpUSCH2+- · · )·

[000104] Those skilled in the art should understand that the aforesaid manner of determining the power scaling parameter information is only exemplary, and other existing manner of determining the power scaling parameter information or those that may possibly come out later should also be covered in the protection scope of the invention and included here in a way of quotation, if they are adaptable to this invention.

[000105] In the step S4', the first network access device 2 sends the power scaling parameter information to the mobile device 1 through a mobile network such as GSM, 3G, TD-LTE, etc.; or in the step S3', the first network access device 2 may first send the power scaling parameter information to other network access device that connects to the first network access device 2 through a non-ideal backhaul, and then this network access device sends the power scaling parameter information to the mobile device 1.

[000106] Correspondingly, the mobile device 1 receives, from the network access device corresponding to said target connection, parameter information of power scaling corresponding to the target connection, through a mobile network such as GSM, 3G, TD-LTE, etc.

[000107] In the step S2', the mobile device 1 assigns transmission power for very uplink physical channel of said multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, as well as parameter information of power scaling corresponding to very uplink physical channel of said multiple target connections.

[000108] For example, suppose in the step S I ' , the mobile device 1 determines that the uplink physical channel (including PUCCH and PUSCH carrying UCI) carrying UCI to the small-cell eNB has a higher power assignment priority than the uplink physical channel (including PUCCH and PUSCH carrying UCI) carrying UCI to the macro-cell eNB, the uplink physical channel PUSCH carrying data information has the lowest power assignment priority; then in the step S2' , the mobile device 1 first assigns transmission power to the uplink physical channel carrying UCI to the small-cell eNB, as shown in equation (21) below:

P UCI _macro < P TMAX - P ¹ UCI _ small (21)

Then, in the step S2' , the mobile device 1 assigns transmission power to the uplink physical channel to the macro-cell eNB carrying UCI; finally, in the step S2' , the mobile device 1 assigns transmission power to the uplink physical channel carrying data information, as shown in equation (22) below:

,,cc — ^T IMMAAXX ^U UCCII __ ssmmaallll UCI _ macro (22) wherein ^w° ^ l , ^ denotes the parameter information of power scaling, namely power scaling factor, of PUSCH carrying data information on the c-th CC, p

ucⁱ _macro d_enot_es transmission power of a physical channel (including PUCCH and p

[000109] For another example, suppose in the step S I ', the mobile device 1 determines that the uplink physical channel carrying UCI to the small-cell eNB and has the highest power assignment priority, followed by the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB, the power assignment priority of the uplink physical channel carrying UCI to the macro-cell eNB is lower than the power assignment priority of the uplink physical channel PUSCH carrying data information to the small-cell eNB , the power assignment priority of the uplink physical channel PUSCH carrying data information to the macro-cell eNB has the lowest power assignment priority, then in the step S2', the mobile device 1 first assigns transmission power to the uplink physical channel carrying UCI to the small-cell eNB, and then assigns transmission power to the uplink physical channel PUSCH carrying data information to the small-cell eNB, as shown in equation (23) below:

∑w ^vvi P PUSCH _ mall ,i < ~ P TMAX - P ¹ UCI _ small (23)

And then, in the step S2', the mobile device 1 assigns transmission power to the uplink physical channel carrying UCI to the macro-cell eNB, and next, assigns transmission power to the uplink physical channel PUSCH carrying data information to the macro-cell eNB, as shown in equation (24) below: Σ ^ (^4)

[000110] Those skilled in the art should understand that in specific embodiments, the step S I' and the step S3' of the mobile device 1 may process in parallel or in series.

[000111] It needs to note that the present invention can be implemented in software and/or a combination of software and hardware, for example, the invention can be implemented by using an Application Specific Integrated Circuit (ASIC), a general purpose computer or any other similar hardware equipment. In one embodiment, the software program of this invention can be executed by a processor to accomplish the aforesaid steps or functions. Likewise, the software program (including the relevant data structure) of the invention can be stored in a computer readable recording medium, for example, RAM memory, magneto-optical drive or floppy disk and similar devices. In addition, some steps or functions of the invention can be realized by using hardware, for example, a circuit that cooperates with the processor to perform various steps or functions.

[000112] In addition, part of the invention can be applied as a computer program product, such as a computer program instruction, when the instruction is executed by the computer, the method and/or technical solution according to this invention may be called or provided through an operation of the computer. However, the program instruction for calling the method of the invention may possibly be stored in a fixed or movable recording medium, and/or be transmitted via broadcasting or other signal carrier mediums, and/or be stored in the operation memory of a computer device that is running according to said program instruction. Here, there is one device included according to an embodiment of the invention, said device comprises a memory for storing computer program instructions and a processor for executing program instructions, this device is triggered to operate the methods and/or technical solutions based on the aforesaid embodiments of the invention when the computer program instructions are executed by said processor.

[000113] To those skilled in the art, apparently the present invention is not limited to the details of the aforementioned exemplary embodiments, moreover, under the premise of not deviating from the spirit or fundamental characteristics of the invention, this invention can be accomplished in other specific forms. Therefore, the embodiments should be considered exemplary and non-restrictive no matter from which point, the scope of the invention is defined by the appended claims instead of the above description, and aims at covering the meanings of the equivalent components falling into the claims and all changes within the scope in this invention. Any reference sign in the claims shall not be deemed as limiting the concerned claims. Besides, apparently the word "comprise/include" does not exclude other components or steps, singular numbers does not exclude complex numbers, the plurality of components or means mentioned in device claims may also be accomplished by one component or means through software or hardware, the wording like first and second are only used to represent names rather than any specific order.

Claims

We claims:

1. A method for assigning uplink power in mobile device, wherein, said mobile device simultaneously connects to at least two network access devices via component carriers of every network access device, wherein, said method comprising the following steps:

a. determining power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices;

b. assigning transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

2. The method according to claim 1 , wherein the step a comprises:

- according to information to be carried via the target connection, determining power assignment priority information of said every uplink physical channel of multiple target connections, wherein the target connection is corresponding to one of said at least two network access devices.

3. The method according to claim 2, wherein the information to be carried includes uplink control information and/or data information to be transmitted by said mobile device;

wherein the step a comprises:

- according to information to be carried by the target connection, determining power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

4. The method according to claim 3, wherein the step a comprises:

- according to information to be carried by the target connection, and channel type information of every uplink physical channel corresponding to the target connection, determining power assignment priority information of said every uplink physical channel of multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

5. The method according to claim 3, wherein the step a further comprising: - when said multiple target connections include a primary cell and/or a secondary cell, determining power assignment priority information of every uplink physical channel of the multiple target connections according to information to be carried by the target connection, as well as priority information of said cell, wherein, the power assignment priority corresponding to a primary cell carrying the uplink control information is higher than the power assignment priority corresponding to a secondary cell carrying the uplink control information.

6. The method according to claim 3, wherein the method further comprising:

- determining device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection;

wherein the step a comprises:

- according to information to be carried by the target connection, as well as the device priority information, determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

7. The method according to any one of claims 1 to 6, wherein the method further comprising:

- receiving from the network access device corresponding to said target connection, parameter information of power scaling corresponding to the target connection;

wherein the step b comprises:

- assigning transmission power for very uplink physical channel of said multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device, as well as parameter information of power scaling corresponding to very uplink physical channel of said multiple target connections.

8. A method for assisting a mobile device in assigning uplink power at a first network access device, wherein, said mobile device simultaneously connects to at least two network access devices by component carriers of every network access device, said mobile device connects to the first network access device through component carriers corresponding the first network access device, wherein said method comprising the following steps:

A. determining parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device, wherein the target connection is corresponding to the first network access device; B. sending the parameter information of power scaling to said mobile device.

9. A mobile device for assigning uplink power, wherein, said mobile device simultaneously connects to at least two network access devices via component carriers of every network access device, wherein, said mobile device comprising: a priority determination apparatus configured to determine power assignment priority information of every uplink physical channel of multiple target connections corresponding to said mobile device, wherein the target connection is corresponding to one of said at least two network access devices;

a power assignment apparatus configured to assign transmission power for said every uplink physical channel of multiple target connections based on the power assignment priority information along with the maximum output power of said mobile device.

10. The mobile device according to claim 9, wherein the priority determination apparatus is configured to:

11. The mobile device according to claim 10, wherein the information to be carried includes uplink control information and/or data information to be transmitted by said mobile device;

wherein the priority determination apparatus is configured to:

12. The mobile device according to claim 11 , wherein the priority determination apparatus is configured to:

13. The mobile device according to claim 11 , wherein the priority determination apparatus is further configured to:

- when said multiple target connections include a primary cell and/or a secondary cell, determining power assignment priority information of every uplink physical channel of the multiple target connections according to information to be carried by the target connection, as well as priority information of said cell, wherein, the power assignment priority corresponding to a primary cell carrying the uplink control information is higher than the power assignment priority corresponding to a secondary cell carrying the uplink control information.

14. The mobile device according to claim 11 , wherein the mobile device further comprising:

a device priority determination apparatus configured to determine device priority information of network access devices corresponding to said multiple target connections based on path loss information of a network access device corresponding to the target connection;

wherein the priority determination apparatus is configured to:

- according to information to be carried by the target connection, as well as the device priority information , determining power assignment priority information of very uplink physical channel of the multiple target connections, wherein the power assignment priority corresponding to a uplink physical channel carrying the uplink control information is higher than the power assignment priority corresponding to a uplink physical channel carrying the data information, the target connection is corresponding to one of the at least two network access devices.

15. The mobile device according to any one of claims 9 to 14, wherein the mobile device further comprising:

a receiving apparatus configured to receive from the network access device corresponding to said target connection, parameter information of power scaling corresponding to the target connection;

wherein the power assignment apparatus configured to:

16. A first network access device for assisting a mobile device in assigning uplink power, wherein, said mobile device simultaneously connects to at least two network access devices by component carriers of every network access device, said mobile device connects to the first network access device through component carriers corresponding the first network access device, wherein said method comprising the following steps:

a power parameter determination apparatus configured to determine parameter information of power scaling of very uplink physical channel of a target connection corresponding to said mobile device, wherein the target connection is corresponding to the first network access device;

a sending apparatus configured to send the parameter information of power scaling to said mobile device.

17. A communication system, wherein the communication system comprises mobile device according to any one of claims 9-15, and a first network access device according to claim 16.