WO2011160275A1

WO2011160275A1 - Method for reporting power headroom in carrier aggregation network

Info

Publication number: WO2011160275A1
Application number: PCT/CN2010/074138
Authority: WO
Inventors: 杨涛; 沃拉尔·钱德瑞卡; 温萍萍
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯
Priority date: 2010-06-21
Filing date: 2010-06-21
Publication date: 2011-12-29
Also published as: TW201215207A; CN102845083A; CN102845083B

Abstract

For providing a Power Headroom Report (PHR) corresponding to each Component Carrier (CC) in a Carrier Aggregation (CA) network, the present invention provides a method for reporting power headroom in a CA network. The method includes any of the following steps: reporting power headroom corresponding to all the CCs in a single report; only reporting power headroom corresponding to a Primary Component Carrier (PCC) in a single report; reporting power headroom corresponding to one Secondary Component Carrier (SCC) or multiple SCCs among at least one SCC in a single report; reporting power headroom corresponding to one or multiple CC(s) among all the CCs in a single report. The present invention can report power headroom corresponding to one or multiple CC(s) together or respectively, thus resolving a technical problem that how to provide power headroom corresponding to CCs.

Description

Method for performing power headroom reporting in a carrier aggregation network

The present invention relates to wireless communication technologies, and more particularly to multi-carrier based carrier aggregation techniques. Background technique

In the LTE-A standard, up to 100M of bandwidth will be used to meet the needs of higher data rates. In order to have backward compatibility, the 100M bandwidth is divided into multiple Component Carriers (CCs), where each component carrier has a maximum bandwidth of 20M. This technology is Carrier Aggregation (CA). )technology. In this case, each macro cell can support up to five component carriers, including a primary component carrier (PCC) and other secondary component carriers (SCCs). In the carrier aggregation network, an important issue is how to perform Power Headroom Report (PHR). The details of this issue are currently being discussed in the industry, but some of the following consensuses have been reached:

- PHR should be performed separately for each component carrier, which means that there are at most 5 PHR contents in the carrier aggregation network;

- For the primary component carrier in the component carrier, it should be included to report the power headroom other than the physical uplink shared channel and the physical uplink control channel, and to report the power headroom other than the physical uplink shared channel.

In the LTE standard, there is only one carrier. For the power headroom report of the carrier, the standard specifies the use of medium access control (MAC) control element (CE) signaling for reporting, this signaling is called MAC PHR CE. In the LTE standard, as shown in FIG. 1, the MAC PHR CE includes a MAC PHR CE header of one byte in length and a PHR content part of one byte in length. In the header, an LCID indicating that the CE is a PHR CE, and a 2-bit reserved bit (R) and a 1-bit extended bit (E) are included. In the content portion, a PHR value of 6 bits in length and a reserved bit (R) of 2 bits are included. In the LTE-A standard, it is reasonable to use the PHR format similar to the MAC PHR CE in the LTE standard for power headroom reporting. That is, the PHR content is one byte including a 6-bit PHR value and a 2-bit reserved bit (R). For the primary component carrier PHR, including 2 bytes, one byte is used to report power margins other than the physical uplink shared channel and the physical uplink control channel, and the other byte is used to report power other than the physical uplink shared channel. margin. Summary of the invention

Although the industry is still discussing the specifics of PHR, the format of the MAC PHR CE should be able to support the following two scenarios:

- Report PHR information for all configured component carriers at the same time, which means that one MAC PHR CE contains the PHR of all currently configured component carriers. This scenario occurs when the PHRs of all component carriers are simultaneously triggered and reported;

- The PHR information of each configured component carrier can be reported separately at different times.

This means that a MAC PHR CE does not necessarily include the PHR of all currently configured component carriers.

The present invention aims to provide a method for performing power headroom reporting covering the above two scenarios, and provides a corresponding MAC PHR CE format.

According to an aspect of the present invention, a method for reporting a power headroom corresponding to a component carrier to a base station in a user equipment of a carrier aggregation communication network, where a primary component carrier and at least one auxiliary component carrier are present in the network The method includes any of the following steps: a. reporting the power headroom corresponding to all component carriers in a single report; b. reporting only the power headroom corresponding to the primary component carrier in a single report; and, in a single report only Reporting a power headroom corresponding to one or more of the at least one auxiliary component carrier; c. reporting a power headroom corresponding to one or more of the component carriers in a single report.

According to a preferred embodiment, the step a includes the following steps: providing a first report control unit header, where the header includes a first logical channel identifier, where the first identifier is used to indicate that the report includes all component carriers Power headroom; provide first report content And the first part includes a primary component carrier of all component carriers and a power headroom corresponding to all the auxiliary component carriers; and sending the first control unit header and the first part to the base station.

This embodiment is capable of simultaneously reporting PHR information for all configured component carriers.

According to another preferred embodiment, in the step b, for the primary component carrier, the step b includes the following steps: providing a second control unit header, where the second header includes a second logical channel identifier, The second identifier is used to indicate that the report only includes a power headroom corresponding to the primary component carrier; and a second report content portion is provided, where the second portion includes a power headroom corresponding to the primary component carrier. For the one or more auxiliary component carriers of the at least one auxiliary component carrier, the step b includes the following steps: providing a third control unit header, where the third header includes a third logical channel identifier, and the third identifier is used for the third identifier Instructing the report to include only the power headroom corresponding to the auxiliary component carrier; providing a first quantity flag, the first flag is used to indicate the number of auxiliary component carriers corresponding to the report; and providing a third report content part, where the third part is respectively An identifier of each auxiliary component carrier and a power headroom of the auxiliary component carrier are included.

This embodiment is capable of separately transmitting power headroom reports corresponding to the PCC and one or more SCCs.

According to still another preferred embodiment, the step c includes the steps of: providing a fourth control unit header, where the fourth header includes a fourth logical channel identifier, the fourth identifier is used to indicate that the report includes all component carriers a power headroom corresponding to one or more component carriers; providing a primary component carrier indication for indicating whether the report includes a power headroom corresponding to the primary component carrier; providing a second quantity flag, the second flag is used for Indicates the number of auxiliary component carriers corresponding to the report; and provides a fourth report content portion, where the fourth portion includes a power headroom corresponding to one or more component carriers.

This embodiment is capable of simultaneously transmitting PHR information for one or more of all configured component carriers.

Correspondingly, according to another aspect of the present invention, a method for acquiring a power headroom corresponding to a component carrier reported by a user equipment in a base station of a carrier aggregation communication network, where a primary component carrier exists in the network And at least one auxiliary component carrier, the method comprising any of the following steps: i. obtaining all, reported by the user equipment in a single report a power headroom corresponding to the component carrier; ii. acquiring a power headroom corresponding to the primary component carrier that is only reported by the user equipment in a single report; and acquiring, by the user equipment, only the at least one auxiliary component carrier reported in a single report a power headroom corresponding to one or more of the component carriers; iii. acquiring a power headroom corresponding to one or more component carriers of all component carriers reported by the user equipment in a single report. Definitely stated. DRAWINGS

The above and other features, objects, and advantages of the present invention will become more apparent from the detailed description of the accompanying drawings.

1 is a schematic diagram of a format of a MAC PHR CE in an existing LTE standard; FIG. 2 is a schematic diagram of formats of two MAC PHR CEs according to an embodiment of the present invention;

3 is a schematic diagram of a format of a MAC PHR CE for a PHR of a primary component carrier according to still another embodiment of the present invention;

4 is a schematic diagram of a format of a MAC PHR CE for a PHR of a component carrier according to another embodiment of the present invention;

5 is a schematic diagram of a format of an optimized MAC PHR CE for a PHR of a component carrier in accordance with another embodiment of the present invention;

6 is a schematic diagram of a format of another optimized MAC PHR CE for a PHR of a component carrier according to another embodiment of the present invention;

7 is a schematic diagram of a format of a MAC PHR CE according to still another embodiment of the present invention;

8 is a schematic diagram of a format of an optimized MAC PHR CE according to still another embodiment of the present invention;

9 is a schematic diagram of another optimized MAC PHR CE format according to still another embodiment of the present invention.

In the figures, the same or similar reference numerals denote the same or similar components. detailed description

First embodiment

The following is a detailed description of an embodiment of the present invention, which simultaneously reports PHR information of all configured component carriers, and the length of the MAC PHR CE in this embodiment is fixed.

As shown in FIG. 2, the user equipment provides a first report control unit header, where the header includes a first logical channel identifier (LCID), where the first identifier is used to indicate that the report includes power balances corresponding to all component carriers. the amount. The first header has a length of one byte. The first identifier has a length of 6 bits, and the first header further includes a 2-bit reserved bit R and a 1-bit extension E.

The user equipment then provides a first report content portion that includes the primary component carrier of all of the component carriers and the power headroom corresponding to all of the secondary component carriers. The PHR value of each component carrier is 6 bits long.

The power headroom corresponding to the primary component carrier includes:

- used to report power headrooms other than the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH);

- Used to report power headroom other than the Physical Uplink Shared Channel (PUSCH). Preferably, the power component corresponding to the primary component carrier is placed at the first or last position of the power headroom of all component carriers. As in the embodiment shown in Figure 2, the power headroom corresponding to the primary component carrier is placed in the first place of the power headroom of all component carriers.

In an embodiment, as shown in the upper part of the dotted line of FIG. 2, the user equipment places the power headroom corresponding to the primary component carrier and the power headroom corresponding to each of the auxiliary component carriers SCC1, SCC2, SCC3, and SCC4 in a certain order. The certain order here includes: the order of the sequence numbers of the component carriers, or the order configured by the upper layer Radio Resource Control (RRC) signaling. The first part also includes 4 bits of reserved bits. In the present embodiment, the length of the MAC PHR CE is fixed, and the length is 1 + (6 + 6 + η χ 6) / 8 bytes, where n is the number of all auxiliary component carriers configured/active.

In another embodiment, as shown in the lower portion of the dotted line of FIG. 2, the user equipment is a primary component. The power headroom corresponding to the carrier and the power headroom corresponding to each of the auxiliary component carriers provide an identifier. For the two power headrooms corresponding to the primary component carrier, one reserved bit can be used for identification. For each of the four auxiliary component carriers, the power headroom can be identified by using two reserved bits. In this embodiment, the length of the MAC PHR CE is fixed, and the length is (nx 1+2+1) bytes, where n is the number of configured/active all auxiliary component carriers. Then the MAC PHR CE includes:

1-byte MAC PHR CE header;

2 bytes of PHR information for the PCC;

n bytes of PHR information for n SCCs.

After the user equipment generates the first header and the first content part, the configured complete MAC PHR CE is sent to the base station. Correspondingly, in terms of the base station, the base station receives the first report control unit header, where the header includes a first logical channel identifier, and the first identifier is used to indicate that the report includes a power headroom corresponding to all component carriers. And, the base station receives a first report content portion, the first portion including a primary component carrier of all component carriers and a power headroom corresponding to all of the auxiliary component carriers. Finally, the base station extracts, according to the first logical channel identifier, a power headroom corresponding to all component carriers from the first report content portion. Second embodiment

DETAILED DESCRIPTION OF THE INVENTION Another embodiment of the present invention will be described in detail below, which develops a power headroom report corresponding to the PCC and SCC. The MAC PHR CEs corresponding to the PCC and the SCC are respectively identified by different LCIDs.

Here we first describe the PHR used only for PCC. For PCC, the length of its MAC PHR CE is fixed.

First, the user equipment provides a second control unit header, and the second header includes a second logical channel identifier, the second identifier is used to indicate that the report only contains a power headroom corresponding to the PCC. The second header is one byte in length. The second identifier has a length of 6 bits, and the second header further includes a 2-bit reserved bit R and a 1-bit extension E.

And, the user equipment provides a second report content part, and the second part includes the main score The power headroom corresponding to the quantity carrier;

The power headroom includes:

- used to report power headroom other than the physical uplink shared channel and the physical uplink control channel;

- Used to report power headroom other than the physical upstream shared channel.

Similar to the LTE standard, the PHR value of each power margin occupies 6 bits in a byte occupied, and the byte also includes a 2-bit reserved bit R. The two PHRs of the primary component carrier may be arranged in a predetermined order, which may be specified by the standard or previously agreed by the user equipment and the base station, or distinguished by reserved bits R in the PHR content.

The second header and the second portion are shown in Figure 3. The total length of the MAC PHR CE is 3 bytes.

After generating the second header and the second content part, the user equipment sends the formed complete MAC PHR CE to the base station. Correspondingly, the base station receives the second control unit header and the second report content portion, and extracts a power headroom corresponding to the primary component carrier therefrom. Next, the PHR used only for SCC will be described. Since each reported SCC is different, the user equipment needs to identify two problems in the MAC PHR CE:

- How many SCC PHR information is contained in this MAC PHR CE;

- Which SCC corresponds to each PHR information.

In a basic implementation, the user equipment adds an additional F/L byte after the MAC PHR CE header to indicate how many SCC PHRs are included in the MAC PHR CE. At the same time, the 2 reserved bits R of the bytes occupied by each PHR information are used to indicate the sequence number of the SCC corresponding to the PHR. It can be understood that in the case of 4 SCCs, 2 bits are enough to distinguish 4 SCCs.

Specifically, the user equipment provides a third control unit header, where the third header includes a third logical channel identifier, the third identifier is used to indicate that the report only contains the power headroom corresponding to the auxiliary component carrier. The third header is 1 byte in length.

And, the user equipment provides the F/L byte as the first quantity label, and is used to indicate the number of auxiliary component carriers corresponding to the report. At the same time, a third report content portion is provided, the third portion respectively containing an identifier of each auxiliary component carrier and a power headroom of the auxiliary component carrier. The identifier of each SCC occupies a length of 2 bits, and the PHR value of the power headroom of the SCC occupies a length of 6 bits.

The third header, the F/L byte and the third content portion are as shown in Fig. 4. The total length of the MAC PHR CE is 2+ k bytes, where k is the number of SCCs to be reported.

After generating the third header, the F/L byte and the third content part, the user equipment sends the constructed complete MAC PHR CE to the base station. Correspondingly, the base station receives the third control unit header, the first quantity flag and the third report content part, and extracts the power of each auxiliary component carrier from the third part according to the first quantity label and the identifier of each auxiliary component carrier. margin.

In another preferred embodiment, the user equipment uses 2 reserved bits in the MAC PHR CE header to indicate how many SCC PHRs are included in the MAC PHR CE. That is, the user equipment provides 2 reserved bits in the MAC PHR CE header as the first quantity flag, which is used to indicate the number of auxiliary component carriers corresponding to the report. In this preferred embodiment, the F/L byte can be eliminated and the overhead reduced relative to the previous basic implementation. This embodiment is shown in FIG.

In still another preferred embodiment, the user equipment uses one reserved bit in the MAC PHR CE header to indicate whether the number of PHRs of the SCC included in the MAC PHR CE is one or more. In the case of only one SCC, the F/L byte can be omitted and the overhead reduced relative to the previous basic implementation. In the case of multiple SCCs, the previous basic embodiment is followed. The format of the MAC PHR CE of this embodiment in these two cases is as shown in FIG. 6. Third embodiment

DETAILED DESCRIPTION OF THE INVENTION A further embodiment of the present invention is described below, which transmits PHR information for one or more component carriers of all configured component carriers. That is, in a MAC PHR CE, one component of a PCC and multiple SCCs is included. In this case, the user equipment needs to identify three issues in the MAC PHR CE:

- Whether the PHR for PCC is included in the MAC PHR CE; - How many SCC PHR information is included in the MAC PHR CE;

- In the case where the MAC PHR CE contains the PHR information of the SCC, each

Which SCC the PHR information corresponds to.

First, the user equipment provides a fourth control unit header, where the fourth header includes a fourth logical channel identifier, where the fourth identifier is used to indicate that the report includes power remaining corresponding to one or more component carriers of all component carriers. the amount.

In order to solve the above first problem, the user equipment provides a primary component carrier indication for indicating whether the report contains a power headroom corresponding to the primary component carrier. In one example, the user equipment uses a reserved bit in the fourth control unit header to indicate whether or not the PCC PHR is included. In the presence of PCC PHR, it can be set that the PCC PHR is always at the top of the PHR of all component carriers.

In a basic implementation, the user equipment adds an additional F/L byte after the MAC PHR CE header to indicate how many component carriers are present in the MAC PHR CE. The F/L byte can be used as a second number of flags for indicating the number of auxiliary component carriers corresponding to the report.

The user equipment also provides a fourth report content portion, the fourth portion containing the power headroom corresponding to one or more component carriers.

When there is a PCC PHR, the fourth part containing the PCC PHR includes:

The PHR value of each power head occupies 6 bits in a byte occupied, and the byte also includes 2 bits of reserved bit R. Similarly, the two PHRs of the PCC can be arranged in a predetermined order, which can be specified by the standard or predetermined by the user equipment and the base station, or by the reserved bits R in the PHR content.

When there is an SCC PHR, the 2 reserved bits R of the bytes occupied by each PHR information are used to indicate the sequence number of the SCC corresponding to the PHR, and the PHR value is 6 bits in the occupied one byte.

The fourth header, the primary component carrier indication, the F/L byte and the fourth portion are as shown in FIG. After generating the fourth header, the primary component carrier indication, the F/L byte and the fourth part, the user equipment sends the formed complete MAC PHR CE to the base station. Correspondingly, the base station receives the fourth control unit header, the primary component carrier indication, the second quantity indicator, and the fourth report content part, and extracts each part from the fourth part according to the primary component carrier indication and the second quantity indication The power headroom corresponding to the component carrier.

In an optimized implementation manner, if the PCC PHR is included in the report, since both PHRs of the PCC contain 2 bits of reserved bits, the 2 reserved bits of the second PHR may be used as the second quantity flag to indicate The number of SCC PHRs, then F/L bytes can be eliminated, reducing overhead. This embodiment is shown in Figure 8.

In the above optimized implementation manner, in the case that the PCC PHR is not included in the report, the user equipment uses the MAC PHR CE header (which is different from the primary component carrier indication bit) in the MAC PHR CE header. The second quantity is used to indicate whether the number of PHRs of the SCC contained in the MAC PHR CE is one or more. If there is only one SCC PHR in the report, and the second quantity flag can indicate such a situation, the F/L byte can be omitted, reducing the overhead. This embodiment is shown in Figure 9. If the number of PHRs of the SCC is multiple, it is necessary to introduce F/L bytes. In the case where the PCC PHR is included in the report, the bit as the second quantity marker should be ignored to avoid rushing.

While the invention has been illustrated and described with reference to the embodiments of the invention

Other variations to the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the claims, the <RTIgt; "comprising"</RTI> does not exclude other elements and steps, and the word "a" does not exclude the plural. In the practical application of the invention, a component may perform the functions of the various features recited in the claims. Any reference signs in the claims should not be construed as limiting the scope.

Claims

Claim

A method for reporting a power headroom corresponding to a component carrier to a base station in a user equipment of a carrier aggregation communication network, where the system has one primary component carrier and at least one auxiliary component carrier, and the method includes any one of the following Steps:

a. Report the power headroom corresponding to all component carriers in a single report;

b. reporting only the power headroom corresponding to the primary component carrier in a single report; and reporting only the power headroom corresponding to one or more of the at least one auxiliary component carrier in a single report;

c Report the power headroom corresponding to one or more of the component carriers in a single report.

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

Providing a first report control unit header, the header including a first logical channel identifier, the first identifier being used to indicate that the report includes a power headroom corresponding to all component carriers;

Providing a first report content portion, the first portion comprising a primary component carrier of all component carriers and a power headroom corresponding to all of the auxiliary component carriers;

- transmitting the first control unit header and the first part to the base station.

3. The method according to claim 2, wherein the power headroom corresponding to the primary component carrier comprises:

- Used to report power margins other than the physical uplink shared channel and the physical uplink control channel

- used to report power headroom other than the physical uplink shared channel;

The second providing step:

- placing the power headroom corresponding to the primary component carrier at the first or last position of the power headroom of all component carriers;

The second providing step places a power headroom corresponding to the primary component carrier and a power headroom corresponding to each of the auxiliary component carriers in a certain order, where the certain sequence includes: each component The sequence of the sequence numbers of the carriers, or the order configured by the radio resource control signaling, or the second providing step provides an identifier for each power headroom corresponding to the main component carrier and a power headroom corresponding to each of the auxiliary component carriers.

The method according to claim 1, wherein in the step b, for the primary component carrier, the step b comprises the following steps:

Providing a second control unit header, the second header comprising a second logical channel identifier, the second identifier being used to indicate that the report only contains a power headroom corresponding to the primary component carrier;

Providing a second report content portion, the second portion comprising a power headroom corresponding to the primary component carrier;

The power headroom includes:

- used to report power margins other than the physical uplink shared channel and the physical uplink control channel;

- used to report power headroom other than the physical uplink shared channel;

The step of providing the second portion places the two power headrooms in a predetermined order, or the providing step of providing the second portion provides an identifier for the two power headrooms.

The method according to claim 1 or 4, wherein in the step b, for one or more auxiliary component carriers of the at least one auxiliary component carrier, the step b comprises the following steps:

Providing a third control unit header, the third header comprising a third logical channel identifier, the third identifier being used to indicate that the report only contains a power headroom corresponding to the auxiliary component carrier;

Providing a first quantity flag indicating the number of auxiliary component carriers corresponding to the report;

- providing a third report content portion, the third portion respectively containing an identifier of each auxiliary component carrier and a power headroom of the auxiliary component carrier.

The method according to claim 5, wherein the first quantity flag comprises a bit in a third control unit header, and when the bit is a first logic value, the report corresponds to an auxiliary component carrier, When the bit is the second logic value, the report indicates that the report corresponds to multiple auxiliary component carriers.

The method according to claim 5 or 6, wherein the first quantity flag comprises a plurality of bits in a third control unit header, the plurality of bits indicating the one or more auxiliary component carriers Number of; or,

The first quantity flag includes a plurality of bits (F/L) in the report, the plurality of bits (F/L) indicating the number of the auxiliary component carriers.

8. The method according to claim 1, wherein the step c comprises the following steps:

Providing a fourth control unit header, the fourth header including a fourth logical channel identifier, the fourth identifier being used to indicate that the report includes a power headroom corresponding to one or more component carriers of all component carriers;

- providing a primary component carrier indication for indicating whether the report contains a power headroom corresponding to the primary component carrier;

- providing a second quantity flag indicating the number of auxiliary component carriers corresponding to the report;

- Provide a fourth report content section containing the power headroom corresponding to one or more component carriers.

9. The method according to claim 8, wherein the second quantity flag comprises a plurality of bits (F/L) in the report, the plurality of bits (F/L) indicating in the report The number of all component carriers.

10. The method according to claim 8 or 9, wherein the principal component carrier indication comprises a bit in a fourth control unit header;

When the report contains the power headroom corresponding to the primary component carrier, the power headroom corresponding to the primary component carrier included in the fourth part:

- used to report power headroom other than the physical uplink shared channel;

The step of providing the fourth portion places the two power headrooms in a predetermined order, or the providing step of providing the fourth portion provides an identifier for the two power headrooms.

When the report contains the power headroom corresponding to the auxiliary component carrier, the fourth part is divided The identifier of each auxiliary component carrier and the power headroom of the auxiliary component carrier are also included.

The method according to claim 8 or 9, wherein the second quantity flag comprises a bit in a fourth control unit header, and when the bit is a first logic value, the report corresponds to an auxiliary component Carrier, when the bit is the second logic value, indicating that the report corresponds to multiple auxiliary component carriers; or

When there is a power headroom of the primary component carrier, the second quantity flag includes a plurality of bits in a byte of the power component of the primary component carrier, the plurality of bits indicating the number of the auxiliary component carriers.

The method according to claim 8 or 9, wherein when the report only contains a power headroom corresponding to the auxiliary component carrier, the second quantity flag includes one bit in the fourth control unit header When the bit is the first logic value, the report indicates that the report corresponds to one auxiliary component carrier, and when the bit is the second logic value, the report indicates that the report corresponds to multiple auxiliary component carriers;

The fourth portion includes an identifier of each of the auxiliary component carriers and a power headroom of the auxiliary component carrier, respectively.

A method for acquiring a power headroom corresponding to a component carrier reported by a user equipment in a base station of a carrier aggregation communication network, where a primary component carrier and at least one auxiliary component carrier are present in the network, and the method includes the following One step:

i. obtaining a power headroom corresponding to all component carriers reported by the user equipment in a single report;

Ii. acquiring a power headroom corresponding to the primary component carrier that is only reported by the user equipment in a single report; and acquiring one or more auxiliary components of the at least one auxiliary component carrier that are only reported by the user equipment in a single report. The power headroom corresponding to the carrier;

Iii. Acquire a power headroom corresponding to one or more component carriers of all component carriers reported by the user equipment in a single report.

14. The method according to claim 13, wherein the step i comprises the following steps:

Receiving a first report control unit header, the header including a first logical channel identifier, the first identifier being used to indicate that the report includes a power headroom corresponding to all component carriers; Obtaining a first report content portion, the first portion comprising a primary component carrier of all component carriers and a power headroom corresponding to all of the auxiliary component carriers;

- extracting a power headroom corresponding to all component carriers from the first report content portion based on the first logical channel identifier.

The method according to claim 13, wherein in the step ii, for the primary component carrier, the step ii comprises the following steps:

Receiving a second control unit header, the second header comprising a second logical channel identifier, the second identifier being used to indicate that the report only contains a power headroom corresponding to the primary component carrier;

Receiving a second report content portion, the second portion comprising a power headroom corresponding to the primary component carrier;

Extracting, according to the second logical channel identifier, a power headroom corresponding to the primary component carrier from the second report content portion;

For the auxiliary component carrier, the step ii includes the following steps:

Receiving a third control unit header, the third header comprising a third logical channel identifier, the third identifier being used to indicate that the report only contains a power headroom corresponding to the auxiliary component carrier;

Receiving a first quantity flag indicating the number of auxiliary component carriers corresponding to the report;

- receiving a third report content portion, the third portion respectively containing an identifier of each of the auxiliary component carriers and a power headroom of the auxiliary component carrier.

- extracting the power headroom of each of the auxiliary component carriers from the third portion based on the first number of labels and the identifier of each of the auxiliary component carriers.

16. The method according to claim 13, wherein the step iii comprises the following steps:

Receiving a fourth control unit header, the fourth header comprising a fourth logical channel identifier, the fourth identifier being used to indicate that the report contains a power headroom corresponding to one or more component carriers of all component carriers;

Receiving a primary component carrier indication, indicating whether the report includes a power headroom corresponding to the primary component carrier; Receiving a second quantity flag indicating the number of auxiliary component carriers corresponding to the report;

- receiving a fourth report content portion, the fourth portion containing a power headroom corresponding to one or more component carriers;

- extracting a power headroom corresponding to each component carrier from the fourth portion based on the primary component carrier indication and the second quantity flag.