WO2012109960A1

WO2012109960A1 - Power headroom processing method in carrier aggregation, user equipment and base station

Info

Publication number: WO2012109960A1
Application number: PCT/CN2012/070861
Authority: WO
Inventors: 李亚娟; 张兴炜
Original assignee: 华为技术有限公司
Priority date: 2011-02-16
Filing date: 2012-02-03
Publication date: 2012-08-23
Also published as: CN102647800B; CN102647800A

Abstract

Provided are a power headroom processing method in carrier aggregation, user equipment and a base station, the method including: learning that a PUCCH (101) transmission is added to a sub-frame on an SCC; on the SCC, sending a type-2 SCC power headroom report to a base station so as to report the power headroom of the PUSCH and that of the PUCCH of the SCC. The present invention enables the base station to learn the power headroom of the PUCCH and that of the PUSCH of the SCC and then carry out accurate scheduling, thereby improving the scheduling accuracy of the base station.

Description

Power headroom processing method and user equipment and base station in carrier aggregation This application claims to be submitted to the Chinese Patent Office on February 16, 2011, the application number is 201110039126.6, and the invention name is "power margin processing method and user equipment in carrier aggregation. The priority of the Chinese Patent Application for "Base Station", the entire contents of which is incorporated herein by reference.

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a power headroom processing method in a carrier aggregation, a user equipment, and a base station. Background technique

Carrier aggregation means that a user equipment (User Equipment, UE) can transmit data and receive data on two or more consecutive or non-contiguous component carriers (CC). Among the component carriers that are configured/activated by the UE, only one component carrier is a primary component carrier (PCC), and the physical uplink shared channel (PUSCH) can be simultaneously transmitted in the uplink subframe. Physical Uplink Control Channel (PUCCH), the other component carrier is a Secondary Component Carrier (SCC), and can only transmit a Physical Uplink Shared Channel in the uplink subframe. The barrel is called PUSCH). The UE can use the Power Headroom Report (PHR) to reserve the remaining power in the current transmission time slot (ie, the maximum power that the UE can transmit on all component carriers minus the current transmission data. The power is transmitted to the base station to enable the base station to schedule the UE. Among them, PHR can include two types, one is type 1 (type 1) PHR (type 1 PHR), and the other is type 2 (type 2) PHR (type 2 PHR). Specifically, the UE may send the type 1 PHR to the base station to transmit the power headroom of the PUSCH on the SCC; the UE may send the type 2 PHR to the base station on the PCC to send the PUSCH and the PUCCH. Power headroom. In the existing Time Division Duplexing (TDD) system, all aggregated component carriers adopt the same uplink and downlink subframe configuration, and the UE only feeds back the hybrid automatic retransmission of the PCC and other SCCs on the PUCCH of the PCC. Request (Hybrid Automatic Repeat reQuest, HARQ) response (ACK/NACK) information. However, when the aggregated component carriers have different uplink and downlink subframe configurations, the downlink subframe of the PCC corresponding to the subframe time at which the SCC needs to feed back the HARQ response information may occur. One of the solutions may be to increase the PUCCH on the SCC. However, when the boosting port of the SCC transmits the PUCCH, if the base station adopts the traditional manner, the UE is scheduled according to the power headroom of the PUSCH of the SCC, and the scheduling accuracy is low. Summary of the invention

The embodiments of the present invention provide a power headroom processing method, a user equipment, and a base station in carrier aggregation, so as to improve the accuracy of base station scheduling. An embodiment of the present invention provides a method for processing a power headroom in a carrier aggregation, including: learning to add a PUCCH to a subframe on an SCC, and transmitting a power headroom report of the type 2 of the SCC to the base station on the SCC. And reporting a power headroom of the PUSCH of the SCC and a power headroom of the PUCCH. The embodiment of the present invention further provides a user equipment, including: a learning module, configured to learn to add a PUCCH to a subframe on the SCC, and a sending module, configured to send, on the SCC, the type 2 of the SCC to the base station a power headroom report to report a power headroom of the PUSCH of the SCC and a power headroom of the PUCCH. An embodiment of the present invention provides a method for processing a power headroom in another carrier aggregation, including: receiving, on an SCC, a power headroom report of type 2 of the SCC sent by a UE; and power remaining according to type 2 of the SCC. The power report of the PUSCH of the SCC and the power headroom of the PUCCH are reported in the quantity report, and the UE is scheduled. The embodiment of the present invention further provides a base station, including: a receiving module, configured to receive, on an SCC, a power headroom report of type 2 of the SCC sent by a UE. a scheduling module, configured to use, according to type 2 of the SCC The power headroom of the SSCH and the power headroom of the PUCCH in the power headroom report are scheduled for the UE. According to the foregoing technical solution, the embodiment of the present invention increases the transmission of the PUCCH by using the subframe on the SCC, and sends the power headroom report of the type 2 of the SCC to the base station on the SCC, so that the base station can learn the power of the PUCCH of the SCC. The margin and the power headroom of the PUSCH provide more comprehensive information for the base station to schedule the UE, thereby improving the accuracy of the base station scheduling. 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, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work. FIG. 1 is a schematic flowchart of a method for processing a power headroom in a carrier aggregation according to Embodiment 1 of the present invention; FIG. 2 is a schematic structural diagram of a user equipment according to Embodiment 2 of the present invention; FIG. 4 is a schematic structural diagram of a base station according to Embodiment 4 of the present invention; FIG. 5 is another schematic structural diagram of a base station according to Embodiment 4 of the present invention. detailed description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the following will be combined with the present invention. The embodiments of the present invention are clearly and completely described in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present 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 departing from the inventive scope are the scope of the present invention.

FIG. 1 is a schematic flowchart of a power headroom processing method in carrier aggregation according to Embodiment 1 of the present invention. As shown in FIG. 1, the power headroom processing method in carrier aggregation in this embodiment may include the following steps:

Step 1 01: Obtain that the subframe on the SCC increases the transmission PUCCH;

Specifically, the UE may learn the subframe on the SCC by receiving a notification message from a physical layer, a media access control (MAC) layer, or a radio resource control (RRC) layer of the base station. The PUCCH is added to the transmission; or the PDCCH scheduling information from the base station is received, and the subframe on the SCC is added to transmit the PUCCH, which is not limited in this embodiment of the present invention.

Step 1 02: Send, on the SCC, a power headroom report of type 2 of the SCC to the base station, to report the power headroom of the PUSCH of the SCC and the power headroom of the PUCCH.

Specifically, the UE may send the power headroom report of the type 2 of the SCC to the base station in any subframe of the foregoing SCC, for example, the UE may send the type 2 of the SCC to the base station in the subframe in which the PUCCH is added. The power headroom indicates that the UE may also send a power headroom report of type 2 of the SCC to the base station in any subframe before the subframe in which the PUCCH is transmitted, that is, report the respective powers of the PUSCH and the PUCCH of the SCC. margin.

Optionally, in this step, the UE may also periodically send a power balance of type 2 of the SCC to the base station on the foregoing SCC. Specifically, the UE may pass, but is not limited to, any of the following manners. The type 2 power headroom report of the SCC is periodically sent to the base station:

And transmitting, on the preset subframe of the foregoing SCC, a power headroom report of type 2 of the SCC to the base station.

When the disable power margin reporting timer ( prohibitPH R-Timer) times out and the path loss (path loss) is greater than a preset path loss threshold (dl-PathlossChange, unit: dB), the base station transmits the location to the base station. a power headroom report for type 2 of the SCC;

When the periodic power headroom reporting timer (periodPHR-Timer) times out, a power headroom report of type 2 of the SCC is transmitted to the base station on the SCC.

It should be noted that: the foregoing power margin reporting timer and the periodic power headroom reporting timer and the path loss threshold may use parameters configured by the PHR in the prior art, or may be configured with a separate set of parameters. This is not a limitation.

In this embodiment, the PUCCH is added to the subframe on the SCC, and the power headroom report of the type 2 of the SCC is sent to the base station on the SCC, so that the base station can learn the power headroom of the PUCCH of the SCC and the PUSCH. The power headroom can further provide more comprehensive information for the base station to schedule the UE, and improve the accuracy of the base station scheduling.

The power headroom processing method in the carrier aggregation of this embodiment may be applicable to multiple radio access networks, for example, Long Term Evolution (LTE) system network, LTE evolution (LTE-Advance, LTE) -A ) Network such as system network.

The base station may be a network element such as an evolved NodeB (Evolved NodeB) in an LTE or LTE-A system network.

It should be noted that, for the foregoing method embodiments, for the sake of description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not described. The order of the actions is limited, as some steps may be performed in other orders or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in the specific embodiments. For details, refer to related descriptions of other embodiments.

FIG. 2 is a schematic structural diagram of a user equipment according to Embodiment 2 of the present invention. As shown in FIG. 2, the user equipment in this embodiment may include a learning module 21 and a sending module 22. The learning module 21 is configured to learn the subframe to increase the transmission PUCCH on the SCC, and the sending module 22 is configured to send, on the SCC, the power headroom report of the type 2 of the SCC to report the power of the PUSCH of the SCC. The amount and the power headroom of the above PUCCH.

The foregoing method in the first embodiment of the present invention can be implemented by the user equipment provided by the embodiment of the present invention. Specifically, the learning module 21 in this embodiment may receive the notification message from the physical layer, the MAC layer, or the RRC layer of the base station, and learn that the subframe on the SCC increases the transmission PUCCH; or may receive the received base station from the base station. The PDCCH scheduling information is learned that the subframe on the SCC increases the transmission PUCCH.

Specifically, the sending module 22 in this embodiment may be configured to send, according to any subframe of the SCC, a power headroom report of type 2 of the SCC to the base station, to report the power of each of the PUSCH and the PUCCH of the SCC. margin.

Optionally, the sending module 22 in this embodiment may be further configured to periodically send, to the base station, a type 2 power headroom report of the SCC on the foregoing SCC, to report a power headroom of each of the PUSCH and the PUCCH of the SCC. . Specifically, the sending module 22 may send a power headroom report of type 2 of the SCC to the base station on the preset subframe of the SCC to report the foregoing. The respective power headrooms of the PUSCH and the PUCCH of the SCC; or when the power headroom reporting timer is disabled, and the path loss is greater than a preset path loss threshold, the type 2 of the SCC is sent to the base station on the SCC. The power headroom report is used to report the power headroom of each of the PUSCH and the PUCCH of the SCC; or when the periodic power headroom reporting timer expires, the power of the type 2 of the SCC is sent to the base station on the SCC. The quantity report reports the respective power headrooms of the PUSCH and PUCCH of the above SCC.

In this embodiment, the user equipment learns that the sub-frame on the SCC increases the transmission PUCCH by using the learning module, and then the sending module sends the power headroom report of the type 2 of the SCC to the base station on the SCC, so that the base station can learn the SCC. The power headroom of the PUCCH and the power headroom of the PUSCH can be accurately scheduled, thereby improving the accuracy of the base station scheduling.

FIG. 3 is a schematic flowchart of another method for processing a power headroom in carrier aggregation according to Embodiment 3 of the present invention. As shown in FIG. 3, the power headroom processing method in carrier aggregation in this embodiment may include the following steps:

Step 301: Receive, on the SCC, a power headroom report of type 2 of the SCC sent by the UE. Specifically, the base station may send a physical layer, a media access control (MAC) layer, or a radio resource control to the UE. a radio resource control, which is called a RRC) layer notification message, to indicate that a subframe on the SCC is added to transmit a PUCCH; or may also send PDCCH scheduling information to the UE to indicate that the subframe on the SCC increases the transmission PUCCH, which is in the embodiment of the present invention. This is not a limitation. After the UE learns that the subframe on the SCC increases the transmission PUCCH, the UE sends a power headroom report of the type 2 of the SCC to the base station on the SCC.

Step 302: Perform scheduling on the UE according to the power headroom of the PUSCH of the SCC and the power headroom of the PUCCH in the power headroom report of the Type 2 of the SCC. In this embodiment, the power headroom report of the type 2 of the SCC sent by the UE is received on the SCC, so that the power headroom of the PUCCH of the SCC and the power headroom of the PUSCH can be learned, thereby enabling accurate scheduling, as opposed to In the prior art, the scheduling of the UE is only performed by the power headroom of the PUCCH, and the accuracy of the base station scheduling is improved.

It should be noted that, for the foregoing method embodiments, they are all described as a series of action combinations for the description of the device, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

FIG. 4 is a schematic structural diagram of a base station according to Embodiment 4 of the present invention. As shown in FIG. 4, the base station in this embodiment may include a receiving module 41 and a scheduling module 42. The receiving module 41 is configured to receive, on the SCC, the type 2 power headroom report of the SCC sent by the UE, and the scheduling module 42 is configured to use the PUSCH of the SCC in the power headroom report of the Type 2 of the SCC received by the receiving module 41. The power headroom and the power headroom of the PUCCH are scheduled for the UE.

Further, as shown in FIG. 5, the base station in this embodiment may further include an indication module 51. a notification message for transmitting a physical layer, a media access control MAC layer, or a radio resource control RRC layer to the UE, to indicate that a subframe on the SCC is added to transmit a PUCCH; or sending a physical downlink control channel PDCCH scheduling information to the UE to indicate Subframes on the SCC increase the transmission PUCCH. In this way, after the UE learns that the subframe on the SCC increases the transmission PUCCH, the UE sends a power headroom report of the type 2 of the SCC to the base station on the SCC. In this embodiment, the receiving module receives the power headroom report of the type 2 of the SCC sent by the UE on the SCC, so that the scheduling module can learn the power headroom of the PUCCH of the SCC and the power headroom of the PUSCH, thereby being able to accurately Scheduling, thereby improving the accuracy of base station scheduling. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as R〇M, RAM, a magnetic disk, or an optical disk. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for processing a power headroom in carrier aggregation, comprising:

Obtaining that the subframe on the sub-component carrier SCC increases the transmission physical uplink control channel PUCCH;

Sending, on the SCC, a power headroom report of type 2 of the SCC to the base station to report a power headroom of the physical uplink shared channel PUSCH of the SCC and a power headroom of the PUCCH.

The method according to claim 1, wherein the learning that the subframe boosting port on the SCC transmits the PUCCH includes:

Receiving a notification message from the physical layer of the base station, the medium access control MAC layer, or the radio resource control RRC layer, and knowing that the subframe on the SCC increases the transmission PUCCH; or

By receiving the physical downlink control channel PDCCH scheduling information from the base station, it is learned that the subframe on the SCC increases the transmission PUCCH.

The method according to claim 1, wherein the transmitting the power headroom of the type 2 of the SCC to the base station on the SCC comprises:

A power headroom report of type 2 of the SCC is transmitted to the base station in any subframe of the SCC.

On the SCC, a power headroom report of type 2 of the SCC is periodically sent to the base station.

The method according to claim 4, wherein the transmitting, on the SCC, the type 2 power headroom report of the SCC to the base station periodically comprises:

Sending a power headroom report of type 2 of the SCC to a base station on a preset subframe of the SCC; or When the power headroom reporting timer is disabled and the path loss is greater than a preset path loss threshold, the SCC type 2 power headroom report is sent to the base station on the SCC; or when the periodic power headroom Sending, when the reporting timer expires, to the base station on the SCC

SCC type 2 power headroom.

6. A user equipment, comprising:

The learning module is configured to learn that the subframe on the sub-component carrier SCC increases the transmission physical uplink control channel

PUCCH;

And a sending module, configured to send, on the SCC, a power headroom report of the type 2 of the SCC to the base station, to report a power headroom of the physical uplink shared channel PUSCH of the SCC and a power headroom of the PUCCH.

The user equipment according to claim 6, wherein the learning module is specifically configured to receive, by receiving, a physical layer, a media access control MAC layer, or a radio resource control from the base station.

The notification message of the RRC layer is learned that the subframe on the SCC increases the transmission PUCCH; or

The user equipment according to claim 6, wherein the sending module is specifically configured to send, according to any subframe of the SCC, a power headroom report of type 2 of the SCC to a base station.

The user equipment according to claim 6, wherein the sending module is configured to periodically send a power headroom report of type 2 of the SCC to the base station on the SCC.

The user equipment according to claim 9, wherein the sending module is specifically configured to: Sending a power headroom report of type 2 of the SCC to a base station on a preset subframe of the SCC; or

When the power headroom reporting timer is disabled and the path loss is greater than a preset path loss threshold, the SCC type 2 power headroom report is sent to the base station on the SCC; or when the periodic power headroom Sending, when the reporting timer expires, to the base station on the SCC

SCC type 2 power headroom.

A power headroom processing method in carrier aggregation, comprising: receiving, on a secondary component carrier SCC, a power headroom report of type 2 of the SCC sent by a user equipment UE;

a physical uplink shared channel of the SCC according to the power headroom report of type 2 of the SCC

The power headroom of the PUSCH and the power headroom of the physical uplink control channel PUCCH are scheduled for the UE.

12. The method according to claim 11, further comprising:

Transmitting, by the UE, a notification message of a physical layer, a medium access control MAC layer, or a radio resource control RRC layer, to indicate that a subframe on the SCC increases the transmission PUCCH; or

The physical downlink control channel PDCCH scheduling information is sent to the UE to indicate that the subframe on the SCC increases the transmission PUCCH.

13. A base station, comprising:

a receiving module, configured to receive, on the secondary component carrier SCC, a type 2 power headroom report of the SCC sent by the user equipment UE;

a scheduling module, configured to: according to the power headroom report of the Type 2 power headroom of the SCC, a power headroom of a physical uplink shared channel PUSCH of the SCC and a power headroom of a physical uplink control channel PUCCH, The UE performs scheduling.

The base station according to claim 13, further comprising an indication module, configured to send, to the UE, a notification message of a physical layer, a media access control MAC layer, or a radio resource control RRC layer, to indicate on the SCC Subframes increase transmission PUCCH; or