WO2010124436A1

WO2010124436A1 - Multi-carrier resource scheduling method and apparatus

Info

Publication number: WO2010124436A1
Application number: PCT/CN2009/071491
Authority: WO
Inventors: 陈斌
Original assignee: 华为技术有限公司
Priority date: 2009-04-27
Filing date: 2009-04-27
Publication date: 2010-11-04
Also published as: CN101990777B; CN101990777A

Abstract

The embodiments of the present invention provide a multi-carrier resource scheduling method and apparatus in wireless communication field. The method includes: obtaining a carrier aggregation influence factor, and allocating carrier and/or sub-channel to a terminal according to the carrier aggregation influence factor. The embodiments of the present invention are suitable to introduce the multi-carrier resource scheduling after the carrier aggregation.

Description

Multi-carrier resource scheduling method and device

The present invention relates to the field of wireless communications, and in particular, to a multi-carrier resource scheduling method and apparatus. Background technique

Current candidate technologies 4G (The 4 ^th Generation, 4th generation) communication technology have adopted OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal frequency division multiple access) technology. The OFDMA system divides the spectrum resource of one carrier into many sub-carriers and allocates them to different users for multi-user multiplex access. In OFDMA systems, the allocation and scheduling of dynamic resources plays a key role in system performance. The appropriate subcarriers are allocated to the appropriate users at a certain time, called User Selection and Sub-Carrier Allocation. At the same time, the transmit power needs to be allocated on these subcarriers to achieve the goal of maximizing system spectrum utilization.

In an actual communication system, it is generally considered that the system transmission power upper limit is fixed. Under this limitation, how to perform power allocation on each subcarrier, so that the overall traffic (data rate) is the largest, is a problem to be solved by OFDMA. In the single-user OFDMA system, it is proved in the academics that the water injection algorithm (Water-Filling) algorithm is used to calculate a unified water injection line. According to the water injection line, large power is allocated to the channel gain and small power is allocated to the channel. On a subcarrier with a small gain, this allows an optimized data rate to be achieved. However, the complexity of the water injection algorithm is too high, and the algorithm is generally simplified to ensure that the performance is reduced within an acceptable range.

In a multi-user OFDMA system, 4-bit subcarrier allocation, user selection, and power allocation are performed in two steps; the first step is to perform subcarrier allocation and user selection, and for each subcarrier, assign it to the subcarrier. The user with the best channel quality; the second step, according to the above subcarrier allocation, the power is allocated by the water injection algorithm, and the total power is evenly distributed among all the subcarriers, and the data flow is about 5% different from the optimization. One point is currently adopted by more than four practical systems, including the LTE (Long Term Evolution) system.

LTE-A is an evolution system of LTE, and introduces an important new technical feature of carrier aggregation. LTE-A In a system using carrier aggregation, multiple uplink and downlink carrier elements (Component Carriers) can be served in one cell at the same time, which greatly improves system performance.

The existing technology does not take into account the technical problems introduced by carrier aggregation in resource scheduling, and cannot implement the function of carrier selection.

Summary of the invention

The present invention provides a multi-carrier resource scheduling method and apparatus, which can implement the function of resource selection in resource scheduling under the introduction of carrier aggregation.

Embodiments of the present invention adopt the following technical solutions:

An embodiment of the present invention provides a multi-carrier resource scheduling method, including:

Obtaining a carrier aggregation impact factor;

A carrier and/or a subchannel are allocated to the terminal based on the carrier aggregation impact factor.

Obtaining the PAPR (Peak to Average Power Rate) and/or the power consumption of the terminal under each carrier;

The power consumption condition of the /3⁄4PR and/or the terminal under each carrier is transmitted to the network side.

According to an embodiment of the present invention, a MAC (Media Access Control) device includes: a logical scheduling unit, a multi-carrier resource scheduling unit, a multiplexing unit, and a HARQ entity unit.

The logical scheduling unit is configured to complete logical channel scheduling, for example, which logical channel data needs to be output, and how much data is output, and the like;

The multi-carrier resource scheduling unit is configured to acquire a carrier aggregation impact factor and allocate a carrier and/or a sub-channel to the terminal based on the carrier aggregation influence factor. Since the allocation of carriers and/or subchannels for a terminal is equivalent to selecting a HARQ entity to be used from among a plurality of HARQ entities, the multicarrier resource scheduling unit may also be referred to as a HARQ entity selection unit.

The multiplexing unit is configured to multiplex the result of the scheduling of the logical scheduling unit to a carrier and/or a subchannel allocated by the media resource scheduling unit, to complete a configuration of a media access control protocol data unit. The HARQ (Hybrid Auto Repeat Request) entity unit is configured to send the media access control protocol data unit constructed by the multiplexing unit to the corresponding terminal.

A terminal according to an embodiment of the present invention includes:

An obtaining unit, configured to obtain a power consumption condition of the PAPR and/or the terminal under each carrier;

And a sending unit, configured to send, to the network side, the information acquired by the acquiring unit.

An embodiment of the present invention provides a multi-carrier resource scheduling method and apparatus, which allocates a carrier and/or a sub-channel to a terminal based on a carrier aggregation influence factor, and can complete resource scheduling after introducing a carrier aggregation technology, optimize carrier transmission efficiency, and improve the system. Throughput. The embodiment of the present invention can also obtain the power consumption status of the terminal under each carrier by the terminal and send it to the network side, so that the network side can obtain the carrier aggregation influence factor according to the information, so that the carrier and/or the subchannel can be obtained. Make an assignment.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

1 is a flowchart of a multi-carrier resource scheduling method according to an embodiment of the present invention;

2 is a flowchart of a multi-carrier resource scheduling method according to another embodiment of the present invention; FIG. 3 is a flowchart of Embodiment 1 of the present invention;

4 is a flowchart of Embodiment 2 of the present invention;

Figure 5 is a flowchart of Embodiment 3 of the present invention;

6 is a schematic diagram of a MAC (Media Access Control) device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of another implementation manner of a MAC device according to an embodiment of the present invention; FIG. 8 is a schematic diagram of a terminal according to an embodiment of the present invention.

detailed description

A multi-carrier resource scheduling method and apparatus according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Description.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1, a method for scheduling a multi-carrier resource according to an embodiment of the present invention includes:

5101. Obtain a carrier aggregation impact factor.

5102. Allocate a carrier and/or a subchannel to the terminal based on the carrier aggregation influence factor.

In the foregoing solution and the following, the carrier aggregation influence factor may be obtained according to any one or more of the following: PAPR, power consumption status of the terminal under each carrier, overhead caused by carrier aggregation (Overhead), and allocated carrier Number. If the carrier aggregation influence factor is represented by M, the relationship between the carrier aggregation influence factor M of the terminal and the above items can be obtained by the following formulas:

, = log(^ * NJ (1) M _k = a{\og{ ^ N _k ) + N _k ^ γ%) (2)

M k ― { pAPR + ^a power + 7 overhead ) * (3) In the above formulas, ^^ is the influence factor caused by 73⁄47^, _p . The impact factor caused by the terminal's power consumption on the carrier. _Ve is the influence factor caused by the overhead, and ^ is the number of carriers allocated to the terminal k. β, are all comprehensive impact factors. These influence factors can set different values according to different terminals, or can uniformly set the same value. The setting of the specific values of these influence factors does not affect the scope of protection of the present invention. The power consumption status of the above-mentioned PAPR and the terminal under each carrier can be acquired by the terminal and sent to the network side. Of course, it can also be obtained by the network side itself. The overhead caused by carrier aggregation is usually obtained by the network side.

The carrier aggregation impact factor Μ can also be obtained by other methods.

In the present invention, a subchannel may refer to a subcarrier, a PRB (Physical Resource Block) in an LTE system, or other resource allocation unit.

An embodiment of the present invention provides a multi-carrier resource scheduling method, which allocates a carrier and/or a sub-channel to a terminal based on a carrier aggregation influence factor, which can complete resource scheduling after introducing a carrier aggregation technology, optimize carrier transmission efficiency, and improve system throughput. . As shown in FIG. 2, another embodiment of the present invention provides a multi-carrier resource scheduling method, including:

S201. Obtain a PAPR and/or a power consumption status of the terminal under each carrier.

S202. Send, to the network side, a power consumption status of the PAPR and/or the terminal under each carrier.

In this embodiment, the power consumption status of the PAPR and/or the terminal under each carrier can be obtained by the terminal and sent to the network side, so that the network side can obtain the carrier aggregation influence factor according to the information, so that the carrier and/or the subchannel can be selected. .

The solution of the present invention will be described in detail below in more detail. The following embodiments are all alternatives to the solution of the present invention, and the order of the following embodiments does not indicate a priority order.

Embodiment 1

As shown in FIG. 3, this embodiment may include the following steps:

S301. Receive a PAPR sent by each terminal and a power consumption status of the terminal under each carrier.

In this embodiment, both quantities are acquired by the terminal and sent to the network side. The terminal can send only one of these two quantities, and the other is obtained by the network side itself. Or both of these quantities can be obtained by the network side itself.

S302. Obtain a carrier aggregation impact factor on a certain subchannel of a certain carrier in the optional carrier, and a weighted transmission traffic based on a carrier aggregation impact factor.

First, all subchannels of all carriers in the network system are acquired, and an array B can be used to store these subchannels.

One of the subchannels is selected from the array B, assuming that the subchannel is b and belongs to the carrier.

殳 There are a total of terminals, and the carrier aggregation influence factors of the terminals are obtained. The carrier aggregation influence factors of the K terminals can be stored by setting an array M containing the elements. For all the terminals 1, 2, ... K, the carrier aggregation influence factor 各 corresponding to each terminal is obtained by other methods of the above formulas (1), (2), (3), and can be stored in the Μ .

The weighted transmission traffic of each terminal on the subchannel b is obtained according to the corresponding carrier aggregation influence factor of each terminal on the subchannel b.

For the method of obtaining weighted transmission traffic, refer to equation (4): _γ = r _k , _m , _b M

― M _k T _k [n] ^{( 4 )} , ["] indicates the possible transmission capacity (generally expressed by the flow rate) calculated by the terminal on the subchannel b on the carrier at time n, τ; ι ι indicates At the moment „, the transmission capacity that the terminal has allocated (here as a fairness factor), 3⁄4^ denotes the transmission traffic of the terminal combined with the carrier aggregation influence factor 在 on the subchannel b of the carrier.

In the embodiment of the present invention, the transmission traffic of the terminal on a certain subchannel may not be obtained based on the M, that is, the right side of the above formula (4) may be, that is, when the transmission traffic is acquired.

The present invention can also be realized in consideration of a fairness factor.

S303. Select a terminal that has the largest weighted transmission traffic on a certain subchannel of the certain carrier.

The method for obtaining the terminal with the largest weighted transmission traffic is referred to (5):

, , ( 5 )

On the right side of equation (5), the meaning of equation (4) is to select the appropriate k, m, b (assuming K*, m*, b*, respectively), so that the value of 3⁄4^ is the largest, which determines the subcarrier of the carrier. The terminal with the largest transmission traffic on channel 6* is the optimal combination of the terminal, subchannel 6* and carrier.

S304: Allocate a certain subchannel of the certain carrier to the terminal with the largest weighted transmission traffic. For example, in the present embodiment, the traffic of the terminal 3 on the subchannel 1 without the carrier 1 is the largest, and the carrier 1 and the subchannel 1 on the carrier 1 are allocated to the terminal 3.

If a certain subchannel is allocated to a certain terminal, the subchannel is deleted in the array B. According to the above method, all subchannels of all carriers in the array B are sequentially assigned to the respective terminals until the array B is empty.

Therefore, the embodiment implements resource scheduling of multiple carriers. By adopting the method of the embodiment, on the basis of completing the carrier scheduling, the subchannel with high efficiency can be selected for the terminal, thereby optimizing the transmission efficiency, reducing the power consumption of the terminal, and reducing the uplink PAPR.

Embodiment 2 As shown in FIG. 4, this embodiment may include the following steps:

5401. Set a traffic demand or a maximum number of subchannels for the terminal.

When the cumulative weighted transmission traffic on the terminal is greater than the traffic demand set for the terminal, there is no need to allocate other subchannels to the terminal. Alternatively, when the number of subchannels corresponding to the terminal is greater than the maximum number of subchannels set for the terminal, there is no need to allocate other subchannels to the terminal. Therefore, you can set the traffic demand or the maximum number of subchannels for the terminal.

5402. Acquire a carrier aggregation impact factor on all subchannels of all carriers and a weighted transmission traffic based on a carrier aggregation impact factor.

Specifically, the step can be implemented as follows: All subchannels of all carriers in the network system are obtained, which can be represented by an array B.

Similar to the first embodiment, it is assumed that there are a total of terminals. The terminal k is selected from each terminal, and the weighted transmission traffic of the terminal k on all subchannels (all subchannels in the array B) of all carriers is obtained by the equation (4).

Specifically, the carrier aggregation influence factor of the terminal on all subchannels of all carriers is first acquired. The method of obtaining the carrier aggregation influence factor may refer to any one of the formulas (1), (2) or (3) or other methods. In this embodiment, the power consumption status of the terminal under each carrier is obtained by the network side, and the carrier aggregation influence factor ^ is calculated therefrom. Then, the carrier aggregation influence factor of the terminal on all the sub-channels of all carriers is substituted into the equation (4), thereby obtaining the weighted transmission traffic based on the carrier aggregation influence factor of all the sub-channels of all the carriers.

S403. Obtain a subchannel of a carrier that has the largest weighted transmission traffic corresponding to the terminal.

The subchannel in which the weighted transmission traffic of the corresponding terminal k is the largest is extracted according to the equation (5). For example, the subchannel with the largest traffic is 2, which belongs to carrier 3.

S404, allocating a certain subchannel of the carrier with the largest weighted transmission traffic to the terminal k, and accumulating the maximum weighted transmission traffic to the traffic demand in the cumulative traffic of the terminal k or acquiring the number of subchannels allocated by the terminal k.

Subchannel 2 of carrier 3 is allocated to terminal k, and the weighted transmission traffic of subchannel 2 is accumulated in the accumulated traffic of the terminal. At the same time, subchannel 2 of carrier 3 is deleted from B. 5405. Determine whether the cumulative weighted transmission traffic of the terminal k or the allocated number of subchannels is greater than a traffic demand or a maximum number of subchannels set in S401. If yes, complete the subchannel allocation of the terminal, if otherwise, continue to step S406.

5406. Assign a subchannel to the terminal according to the foregoing steps in the unassigned subchannel.

If the accumulated traffic of the terminal is smaller than the traffic demand set in S401, the subchannel is continuously allocated to the terminal, for example, the traffic is second only to the subchannel of the subchannel 2, that is, the subchannel 3 of the carrier 5 is allocated to the terminal k, and the subchannel is allocated. The transmission traffic of 3 is also added to the accumulated traffic on the terminal until the accumulated traffic is greater than or equal to the traffic demand set in S401. Or if the terminal accumulates the corresponding number of subchannels to reach the maximum number of subchannels set in S401, the terminal is no longer allocated other subchannels. The corresponding subchannel and carrier are then assigned to the next terminal, and the method of allocation is the same as above, until all subchannels are allocated to the terminal.

Therefore, the present embodiment completes multi-carrier resource scheduling, and can select an efficient sub-channel for the terminal, thereby optimizing transmission efficiency, reducing terminal power consumption, and reducing uplink/3⁄4PR. In addition, in this embodiment, the network side obtains the power consumption condition of the /3⁄4PR and/or the terminal under each carrier, and can save the resource loss of the terminal transmission information.

Embodiment 3

As shown in FIG. 5, this embodiment may include the following steps:

5501. Select an optional carrier for the terminal.

Specifically, an optional carrier can be selected for each terminal from all carriers by a multi-carrier aggregation influence factor. For example, a carrier having a small multi-carrier aggregation influence factor may be selected according to the formula (1), (2) or (3) as an optional carrier for each terminal. The power consumption of the PAPR and the terminal under each carrier is obtained by the network side. The present invention is not limited thereto, and the power consumption status of the terminal and/or the terminal under each carrier may be transmitted to the network side by the terminal. The network side can also obtain the overhead caused by carrier aggregation.

For example, carrier 1, carrier 2, and carrier 3 can be selected as optional carriers for the terminal.

5502. Set a traffic demand or a maximum number of subchannels for the terminal.

S503. Obtain a weighted transmission traffic of the terminal k on all subchannels in the selected carrier in S501. For the step, reference may be made to Embodiment 1 and Embodiment 2 above. S504. Acquire a subchannel with the largest weighted transmission traffic of the terminal k.

The transmission traffic of the terminal on each subchannel in the selected optional carrier is obtained by using equation (5). k*,m*,b* = argmax ^M ( 5 )

k,m,b T _k n

S505. The subchannel with the largest weighted transmission traffic is allocated to the terminal k, and the maximum weighted transmission traffic is accumulated on the cumulative weighted transmission traffic of the terminal or the number of subchannels allocated by the terminal is obtained. According to the result of the equation (5), the subchannel 5 of the carrier 1 having the largest ^[ " ^] value is assigned to the terminal / L

5506. Determine whether the cumulative weighted transmission traffic of the terminal k or the allocated number of subchannels is greater than the traffic demand or the maximum number of subchannels set in S502. If yes, complete the subchannel allocation of the terminal k, if otherwise, proceed to step S507.

If the cumulative weighted transmission traffic of terminal k is greater than or equal to the traffic demand of terminal k, no other subchannels are allocated for the terminal. Or if the subchannel data allocated by the terminal is greater than the maximum number of subchannels of the terminal k, the terminal is no longer allocated other subchannels.

5507. Assign a subchannel to the terminal according to the foregoing steps in the unassigned subchannel.

If the cumulative weighted transmission traffic is smaller than the traffic demand of the terminal k, the terminal k is allocated the subchannel 3 of the carrier 2 that is determined by the equation (5) next to the maximum traffic, and the transmission of the subchannel 3 of the carrier 2 The traffic is added to the accumulated traffic of the terminal until the cumulative weighted transmission traffic on the terminal is greater than or equal to the traffic demand of the terminal. Or when the number of accumulated subchannels of the terminal reaches the maximum number of subchannels, the other subchannels are no longer selected for the terminal. For other terminals, the allocation of subchannels corresponding to each terminal is completed in the same manner as described above.

Therefore, the present embodiment completes multi-carrier resource scheduling, and can select an efficient sub-channel for the terminal, thereby optimizing transmission efficiency, reducing terminal power consumption, and reducing uplink/3⁄4PR. In addition, in this embodiment, the network side obtains the PAPR and the power consumption status of the terminal under each carrier, which can save resource loss of the terminal transmission information. A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM). As shown in FIG. 6, an embodiment of the present invention further provides a MAC apparatus, including: a logical scheduling unit 601, a multi-carrier resource scheduling unit (HalQ entity selection unit) 602, a multiplexing (MIMO) unit 603, and a HARQ entity unit. 604.

The logical scheduling unit 601 is configured to perform logical channel scheduling, for example, which logical channel data needs to be output, and how much data is output.

The multi-carrier resource scheduling unit (HARQ entity selection unit) 602 is configured to acquire a carrier aggregation impact factor and allocate a carrier and/or a sub-channel to the terminal based on the carrier aggregation influence factor, or may also be said to be from multiple HARQ entities. Select the HARQ entity you want to use.

For the specific scheduling method, the functions of the multi-carrier resource scheduling unit 602 can be implemented by referring to various embodiments in the foregoing multi-carrier resource scheduling method.

The multiplexing unit 603 is configured to multiplex the result scheduled by the logical scheduling unit 601 to a carrier and/or a subchannel allocated by the media resource scheduling unit 602 to complete the configuration of the MAC PDU.

The HARQ entity unit 604 is configured to send the MAC PDU constructed by the multiplexing unit 603 to the corresponding terminal.

FIG. 6 shows an application manner of the multi-carrier resource scheduling unit (HARQ entity selection unit) in the MAC layer in the existing protocol. Alternatively, the multi-carrier resource scheduling unit (HARQ entity selecting unit) may also be combined with the multiplexing unit in the MAC layer in the protocol in the manner shown in the figure.

The carrier aggregation impact factor is obtained according to any one or more of the following: PAPR, power consumption status of the terminal under each carrier, and overhead caused by carrier aggregation.

On the basis of the foregoing solution, the multi-carrier resource scheduling unit may be further configured to receive a PAPR sent by the terminal and/or a power consumption status of the terminal under each carrier, and acquire a carrier aggregation according to the received information. Influencing factor.

As shown in FIG. 8, an embodiment of the present invention further provides a terminal, including:

The obtaining unit 801 is configured to acquire the power consumption status of the PAPR and/or the terminal under each carrier, and the sending unit 802 is configured to send the information acquired by the acquiring unit 801 to the network side.

The multi-carrier resource scheduling apparatus and the terminal in the embodiment of the present invention may implement multi-carrier resource scheduling in combination with each of the foregoing multi-carrier resource scheduling methods.

Embodiments of the present invention provide a multi-carrier resource scheduling apparatus and a terminal, and establish a correspondence between a terminal and a carrier and/or a sub-channel based on a carrier aggregation influence factor, and allocate each carrier and/or sub-channel to a corresponding terminal, The resource scheduling after the introduction of the carrier aggregation technology can be completed, the transmission efficiency of the carrier is optimized, and the throughput of the system is improved.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

A multi-carrier resource scheduling method, comprising:

Obtaining a carrier aggregation impact factor;

2. The method according to claim 1, wherein the carrier aggregation impact factor is obtained according to any one or more of the following: a peak average power ratio, a power consumption condition of the terminal under each carrier, and a carrier aggregation. The overhead and the number of carriers allocated.

The method according to claim 1, wherein the assigning a carrier and/or a subchannel to the terminal based on the carrier aggregation influence factor includes:

Obtaining a weighted transmission traffic based on a carrier aggregation influence factor on a certain subchannel of a certain carrier in the optional carrier;

Selecting a terminal with the largest weighted transmission traffic on a certain subchannel of the certain carrier; and assigning a certain subchannel of the certain carrier to the terminal with the largest weighted transmission traffic.

The method according to claim 1, wherein the allocating a carrier and/or a subchannel to the terminal based on the carrier aggregation influence factor includes:

Obtaining a carrier aggregation impact factor based weighted transmission traffic on an optional subchannel of the optional carrier for the terminal;

Selecting a subchannel of a certain carrier corresponding to the weighted transmission traffic of the terminal;

Allocating a certain subchannel of a certain carrier with the largest weighted transmission traffic to the terminal.

The method according to claim 4, wherein the method further comprises: determining whether the preset traffic demand of the terminal is greater than the cumulative weighted transmission traffic, and if yes, continuing the unallocated optional carrier Allocating a subchannel for the terminal in an optional subchannel; or

Determining whether the maximum number of subchannels of the terminal is greater than the number of subchannels allocated by the terminal, and if so, continuing to allocate a subchannel to the terminal in an optional subchannel of the unassigned optional carrier.

The method according to claim 4 or 5, wherein the method is before the acquiring, by the terminal, the weighted transmission traffic based on the carrier aggregation influence factor on the selectable subchannel of the optional carrier Further includes:

The power consumption status and the peak average power ratio of each carrier reported by the receiving terminal;

And selecting at least one optional carrier for the terminal according to the received information.

7. The method according to claim 2, wherein the method further comprises: obtaining a peak average power ratio and/or a power consumption condition of the terminal under each carrier.

The method according to any one of claims 1 to 5, wherein the subchannel is a physical resource block in a subcarrier or a long term evolution system.

9. A multi-carrier resource scheduling method, comprising:

Obtaining a peak average power ratio and/or a power consumption condition of the terminal under each carrier;

The peak-to-average power ratio and/or the power consumption condition of the terminal under each carrier are transmitted to the network side.

A media access control device, comprising: a logical scheduling unit, a multi-carrier resource scheduling unit, a multiplexing unit, and a HARQ entity unit;

The logical scheduling unit is configured to complete logical channel scheduling;

The multi-carrier resource scheduling unit is configured to acquire a carrier aggregation impact factor and allocate a carrier and/or a sub-channel to the terminal based on the carrier aggregation influence factor;

The multiplexing unit is configured to multiplex the result of the scheduling of the logical scheduling unit to a carrier and/or a subchannel allocated by the multi-carrier resource scheduling unit, to complete a structure of a media access control protocol data unit;

And a HARQ entity unit, configured to send the media access control protocol data unit constructed by the multiplexing unit to a corresponding terminal.

The apparatus according to claim 10, wherein the multi-carrier resource scheduling unit is further configured to receive a peak-to-average power ratio sent by the terminal and/or a power consumption status of the terminal under each carrier, and according to the received Information acquisition carrier aggregation impact factor.

12. A terminal, comprising:

An obtaining unit, configured to obtain a peak-to-average power ratio and/or a power consumption condition of the terminal under each carrier; and a sending unit, configured to send, to the network side, the information acquired by the acquiring unit.