KR101698715B1 - Method for supporting dual connectivity - Google Patents

Method for supporting dual connectivity Download PDF

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KR101698715B1
KR101698715B1 KR1020157034748A KR20157034748A KR101698715B1 KR 101698715 B1 KR101698715 B1 KR 101698715B1 KR 1020157034748 A KR1020157034748 A KR 1020157034748A KR 20157034748 A KR20157034748 A KR 20157034748A KR 101698715 B1 KR101698715 B1 KR 101698715B1
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scheduling
information
user equipment
auxiliary
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KR20160006730A (en
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타오 양
세이아우 시안 림
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알까뗄 루슨트
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Priority claimed from CN201310172970.5A external-priority patent/CN104144511B/en
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    • H04W72/1278—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method for supporting a dual access in a master eNB of a carrier aggregation based wireless communication system, the method comprising: receiving a scheduling related scheduling information from a secondary eNB or a user equipment, or receiving scheduling related scheduling information from an auxiliary eNB Lt; / RTI > The scheduling information may be exchanged between the master eNB and the auxiliary eNB or received by the UE, and thus subsequent scheduling optimization is possible.

Description

[0001] METHOD FOR SUPPORTING DUAL CONNECTIVITY [0002]

The present invention relates to wireless communication technology, and more particularly, to a method for supporting dual access in a master eNB, an auxiliary eNB, and a user equipment of a carrier aggregation based wireless communication network.

Today, there are master eNBs with relatively large coverage that are deployed simultaneously within the wireless communication network and auxiliary eNBs with relatively smaller coverage. 1 shows a schematic diagram 100 of a prior art network architecture and, as may be apparent, in such a network environment, the master eNB 110 provides basic network coverage (as shown by the dotted background in the figure) On the other hand, for example, the auxiliary eNBs 121, 122, 123, 124 (which have small network coverage (areas shown by diagonal lines in the figure) to provide. At this time, the UE 130 in the overlapping coverage can communicate with the master eNB and the auxiliary eNB at the same time, and a method of efficiently utilizing the resources of the master eNB or the auxiliary eNB for communication, that is, It is very important to achieve optimum and maximum utilization of the UE and both types of eNBs.

Typically, the master eNB is used as a Pcell, and the auxiliary eNB is used as a small cell (Scell), and such a configuration is advantageous for mobility management. At this time, the UEs in the overlapping coverage can communicate with the master eNB and the auxiliary eNB at the same time, but the master eNB and the auxiliary eNB are connected to each other via a non-ideal backhaul network which is not beneficial for scheduling optimization.

In the case of downlink, the way to buffer data is important for how to distribute the data. If distribution is achieved in the core network, the downlink data for the secondary eNB is sent from the core network to the secondary eNB, and the secondary eNB will buffer the downlink transmission. Otherwise, the distribution scheme will be achieved at the access network level, and the data is possibly transferred from the master eNB to the ancillary eNB for downlink transmission.

For the uplink, the user equipment (UE) will acquire an uplink scheduling grant, and then an uplink packet, such as RRC signaling, will be sent to the master eNB and another part such as a data packet will be sent to the secondary eNB. The secondary eNB will then forward the received packet to the master eNB via a non-ideal backhaul network or directly to the core network.

As a result, the method of performing the scheduling is very important for supporting dual connectivity. In the case of downlink, the macro station shall control the scheduling of the master eNB and the auxiliary eNB when buffering is done by the master eNB. This is generally true for the downlink grant scheduling of the master eNB itself, but when the master eNB controls the downlink grant scheduling of the auxiliary eNB, the following problems will arise:

- The master eNB does not know the load status of the auxiliary eNB and therefore does not perform the scheduling operation efficiently;

In the case of LTE-A, scheduling-related information is mainly CSI information received from the UE. According to the concept of carrier aggregation in the prior art, the CSI can be transmitted on the PUCCH or PUSCH. In the former case, the master eNB will receive the CSI information of the secondary eNB. In the latter case, the CSI information is possibly received by the secondary eNB, but there is no CSI information exchange mechanism between the master eNB and the secondary eNB.

The two problems described above will prevent the master eNB from performing efficient scheduling of the auxiliary eNB.

On the other hand, in the case of uplink related information such as BSR or PHR information, a method of transmitting BSR and PHR based on the concept of carrier aggregation of the prior art is not specified. They may be transmitted on any active uplink carrier component. Thus, the BSR and PHR may be received by the master eNode B or auxiliary eNB, as described above, and there is no X2 signaling for exchanging this information.

In view of the above-described prior art and technical problems thereof, a first aspect of the present invention proposes a method for supporting dual access in a master eNB of a carrier aggregation based wireless communication system, the method comprising the steps of:

Receiving the scheduling-related scheduling information from the auxiliary eNB or the user equipment, or transmitting the scheduling-related scheduling information to the auxiliary eNB.

In this way, the scheduling information can be exchanged between the master eNB and the auxiliary eNB or received by the UE, and thus subsequent scheduling optimization is possible. The master eNB can obtain the necessary scheduling information in a timely manner using the method according to the invention, so that the master eNB can realize scheduling optimization, thereby improving the communication performance of the entire wireless communication network.

In one embodiment of the invention, the secondary eNB manages one or more small cells, the method comprising the following steps:

- transmitting control signaling to the user equipment; - instructing the control signaling to add a small cell to the user equipment;

- receiving a first acknowledgment message from the user equipment in response to the control signaling;

- transmitting a first indication message to the auxiliary eNB, the first indication message indicating that the master eNB has added a small cell for the user equipment; And

- receiving a second acknowledgment message from the ancillary eNB in response to the first indication message.

It should be appreciated by those of ordinary skill in the art that the steps described above are only one possible way to establish a duplex connection. It is also appropriate that the secondary eNB can send a dual connection setup indication, or other dual connection establishment schemes are appropriate.

In one embodiment of the present invention, the master eNB receives scheduling-related scheduling information from the secondary eNB through the XN signaling when the master eNB receives the scheduling-related scheduling information from the secondary eNB or transmits the scheduling-related scheduling information to the secondary eNB, And transmits the scheduling information to the auxiliary eNB.

In this way, the secondary eNB may forward the scheduling information to the master eNB in time. Advantageously, the secondary eNB will forward the scheduling information to the master eNB with no delay.

In one embodiment of the invention, the X2 signaling

User equipment identifier;

- small cell index; And

- at least one of uplink BSR information and downlink channel status information

.

It should be appreciated that conventional descriptors may be modified in accordance with the scheduling information to which the content of the X2 signaling is sent to achieve delivery of scheduling information.

In one embodiment of the present invention, the user equipment transmits scheduling related scheduling information to the master eNB only when the master eNB receives the scheduling related scheduling information from the user equipment. In this way, the scheduling can be controlled by the master eNB.

In one embodiment of the invention, for an uplink BSR or an uplink PHR, the user equipment only selects active uplink carrier components controlled by the master eNB to transmit scheduling information. In this way, the master eNB is guaranteed to be able to receive uplink BSR and uplink PHR information.

In one embodiment of the present invention, when downlink CQI feedback is transmitted on the PUSCH, the user equipment selects a small cell to transmit scheduling information according to a predetermined rule. Here, the predetermined rule may be that the scheduling information is transmitted by the small cell managed by the master eNB with the smallest cell index. It should be appreciated by those of ordinary skill in the art that the predetermined rule may be any other suitable rules.

A second aspect of the present invention provides a method for supporting dual access in an auxiliary eNB in a carrier aggregation based wireless communication system, the method comprising the steps of:

Receiving the scheduling-related scheduling information from the master eNB or the user equipment, or transmitting the scheduling-related scheduling information to the master eNB.

The secondary eNB will optimize its scheduling by working effectively with the master eNB using a method to support dual access in the secondary eNB.

In one embodiment of the invention, the secondary eNB manages one or more small cells, the method comprising the following steps:

Receiving a first indication message from the master eNB, the first indication message indicating that the master eNB has added a small cell for the user equipment; And

- sending a second acknowledgment message to the master eNB in response to the first indication message.

Those skilled in the art will understand that the steps described above are only one alternative and that other suitable methods are possible.

In one embodiment of the present invention, the secondary eNB transmits scheduling related scheduling information to the master eNB through X2 signaling in response to a first request command transmitted periodically or from the master eNB.

In one embodiment of the invention, the method comprises the following steps:

- transmitting the second indication information indicating the load status of the small cell through the X2 signaling to the auxiliary eNB in response to the second request command transmitted periodically or from the master eNB by the auxiliary eNB.

In one embodiment of the present invention, when the secondary eNB transmits second indication information indicating the load status of the small cell via X2 signaling to the secondary eNB in response to a second request command transmitted periodically or from the master eNB, the eNB transmits second indication information indicating the load status of the small cell through the X2 signaling periodically to the auxiliary eNB in response to the second request command transmitted from the master eNB only when the load situation of the auxiliary eNB exceeds the first threshold value send. In this way, network scheduling is further improved. Specifically, if the load situation of the auxiliary eNB is lower than, for example, the first threshold, the master eNB can well schedule even when the master eNB does not know the load situation of the auxiliary eNB. Therefore, in this case, it is not necessary to transmit the load situation of the auxiliary eNB to the master eNB. On the other hand, if the load situation of the auxiliary eNB is higher than the first threshold, for example, the master eNB has to consider the load situation of the auxiliary eNB, in which case the load situation of the auxiliary eNB needs to be transmitted to the master eNB.

In one embodiment of the present invention, the second indication information includes a user equipment identifier and a cell index.

A third aspect of the present invention provides a method for supporting dual access in a user equipment of a carrier aggregation based wireless communication system in which user equipment transmits scheduling related scheduling information to a master eNB and an auxiliary eNB, respectively.

Other features, objects, and advantages of the present invention will become more apparent upon consideration of the following detailed description of non-limiting embodiments with reference to the drawings.
1 shows a schematic diagram 100 of a prior art network architecture.
2 shows a flow diagram of a method for supporting dual access in a master eNB in a carrier aggregation based wireless communication system.
3 shows a flow diagram of a method for supporting dual access in an auxiliary eNB of a carrier aggregation based wireless communication system.
In the drawings, same or similar devices (modules) or steps will be denoted by the same or similar reference numerals.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description of preferred embodiments will be given with reference to the drawings which form a part of the present invention. The drawings illustrate, by way of example, specific embodiments in which the invention may be practiced. The exemplary embodiments are not intended to cover all embodiments of the invention. As can be appreciated, other embodiments may be possible or structural or logical changes may be made without departing from the spirit of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention will be defined as in the appended claims.

Figure 1 shows a schematic diagram 100 of a prior art network architecture, which has been described in the Background section, and thus a repetitive description thereof will be omitted here.

Figure 2 shows a method for supporting dual access in a master eNB of a carrier aggregation based wireless communication system as can be seen from Figure 2, the method comprising the following steps:

First, the following operations will be performed in steps 210 and 220:

- transmitting control signaling to the user equipment; - instructing the control signaling to add a small cell to the user equipment;

- receiving a first acknowledgment message from the user equipment in response to the control signaling.

Then, the following operations will be performed in steps 230 and 240:

- transmitting a first indication message to the auxiliary eNB, the first indication message indicating that the master eNB has added a small cell for the user equipment; And

- receiving a second acknowledgment message from the auxiliary eNB in response to the first indication message.

So far, a dual connection has been established. However, one of ordinary skill in the art should understand that the steps described above are only one possible way to establish a dual connection. It is also appropriate that the secondary eNB can send a dual connection establishment indication, or other dual connection establishment methods are appropriate.

Finally, the master eNB receives the scheduling related scheduling information from the auxiliary eNB or the user equipment, or transmits the scheduling related scheduling information to the auxiliary eNB, and the auxiliary eNB manages one or more small cells.

In this way, the scheduling information can be exchanged between the master eNB and the auxiliary eNB or received by the UE, and thus subsequent scheduling optimization is possible. The master eNB can obtain the necessary scheduling information in a timely manner using the method according to the invention, so that the master eNB can realize scheduling optimization, thereby improving the communication performance of the entire wireless communication network.

Here, the master eNB can transmit the scheduling related scheduling information to the auxiliary eNB, so that the auxiliary eNB can acquire other information required by the scheduling in addition to the load situation itself, and thus the auxiliary eNB achieves its own scheduling .

Optionally, the master eNB may receive scheduling-related scheduling information from an auxiliary eNB, or receive scheduling-related scheduling information from an auxiliary eNB through X2 signaling when it transmits scheduling-related scheduling information to an auxiliary eNB, Lt; / RTI > For example, the secondary eNB may forward the uplink BSR information and the downlink CSI information received by the secondary eNB to the master eNB without any delay, so that the master eNB obtains the latest information on time and performs scheduling . At this time, it is necessary that X2 signaling be defined to ensure that the auxiliary eNB can forward the uplink BSR information, downlink CSI information and PHR information received by the auxiliary eNB to the corresponding master eNB.

In one embodiment of the invention, the X2 signaling

User equipment identifier;

- small cell index; And

- at least one of uplink BSR information and downlink channel status information

.

It should be appreciated that conventional descriptors may be modified in accordance with the scheduling information to which the content of the X2 signaling is sent to achieve delivery of scheduling information. The X2 signaling for different scheduling information may also include different content. For example, when the scheduling information is associated with X2 signaling for conveying uplink BSR information, the X2 signaling should include the following parts:

A UE identifier for indicating to a master eNB which user equipment the uplink BSR information comes from.

On the other hand, when the scheduling information is associated with X2 signaling for conveying the downlink CSI / PHR information, the X2 signaling includes the following information:

UE identifier and CSI information;

And a small cell index for instructing the master eNB to which small cell the CSI / PHR information is to be used. For example, if CSI / PHR information is used for the master eNB, the small cell index should be "000 ".

In this way, the secondary eNB may forward the scheduling information to the master eNB in time. Advantageously, the secondary eNB will deliver the scheduling information to the master eNB without any delay.

The advantage of such a delivery mechanism is that the current carrier aggregation specification for transmitting BSR / PHR / CSI information does not need to be updated, and therefore such a mechanism only needs to define X2 signaling and has no negative impact on physical layer standards .

The above objective can be achieved by defining a new BSR / PHR / CSI information transmission rule. Specifically, in one embodiment of the present invention, the user equipment transmits scheduling-related scheduling information to the master eNB only when the master eNB receives the scheduling-related scheduling information from the user equipment. In this way, scheduling can be controlled by the master eNB. For the uplink BSR or uplink PHR, the user equipment only selects active uplink carrier components controlled by the master eNB to transmit the scheduling information. In this way, the master eNB is guaranteed to be able to receive uplink BSR and uplink PHR information. Thus, when downlink CQI feedback is transmitted on the PUSCH, the user equipment selects a small cell to transmit scheduling information according to a predetermined rule. Here, the predetermined rule may be that the scheduling information is transmitted by the small cell managed by the master eNB with the smallest cell index. It should be appreciated by those of ordinary skill in the art that the predetermined rule may be any other suitable rules.

The above schemes may be used in conjunction with rules of the user equipment to ensure that uplink BSR / PHR information and CSI information are available only on the master eNB, which is important for the master eNB to achieve the scheduling.

When a small cell is controlled by an auxiliary eNB, the present invention provides a method for supporting dual access in an auxiliary eNB of a carrier aggregation based wireless communication system, the method comprising the steps of:

First, the following operations will be performed at steps 310 and 320:

Receiving a first indication message from an auxiliary eNB, the first indication message indicating that the master eNB has added a small cell for the user equipment; And

Sending a second acknowledgment message to the master eNB in response to the first indication message.

The secondary eNB manages one or more small cells.

Those skilled in the art will understand that the steps described above are only one alternative and that other suitable methods are possible.

Subsequently, in step 330, the auxiliary eNB receives scheduling-related scheduling information from the master eNB or transmits scheduling-related scheduling information to the master eNB.

The secondary eNB will optimize its scheduling by working effectively with the master eNB using a method to support dual access in the secondary eNB.

In one embodiment of the present invention, the secondary eNB transmits scheduling related scheduling information to the master eNB through X2 signaling in response to a first request command transmitted periodically or from the master eNB.

In an embodiment of the invention, the method further comprises the steps of:

- transmitting the second indication information indicating the load status of the small cell through the X2 signaling to the auxiliary eNB in response to the second request command transmitted periodically or from the master eNB by the auxiliary eNB.

In this way, the secondary eNB can send the load situation to the master eNB to optimize the scheduling of the master eNB.

In one embodiment of the present invention, when the secondary eNB transmits second indication information indicating the load status of the small cell via X2 signaling to the secondary eNB in response to a second request command transmitted periodically or from the master eNB, the eNB transmits second indication information indicating the load status of the small cell through the X2 signaling periodically to the auxiliary eNB in response to the second request command transmitted from the master eNB only when the load situation of the auxiliary eNB exceeds the first threshold value send. In this way, network scheduling is further improved. Specifically, if the load situation of the auxiliary eNB is lower than, for example, the first threshold, the master eNB can well schedule even when the master eNB does not know the load situation of the auxiliary eNB. Therefore, in this case, it is not necessary to transmit the load situation of the auxiliary eNB to the master eNB. On the other hand, if the load situation of the auxiliary eNB is higher than the first threshold, for example, the master eNB must consider the load situation of the auxiliary eNB, in which case the load situation of the auxiliary eNB needs to be transmitted to the master eNB.

In one embodiment of the present invention, the second indication information includes a user equipment identifier and a cell index.

The present invention further provides a method for supporting dual access in a user equipment of a carrier aggregation based wireless communication system in which a user equipment transmits scheduling related scheduling information to a master eNB and an auxiliary eNB, respectively. As a result, both the master eNB and the secondary eNB obtain scheduling related scheduling information.

Specifically, if the logical channel is assumed to be controlled by only one transmitting point, the user equipment may transmit the uplink BSR information of the logical channel controlled by the master eNB on the uplink carrier component of the master eNB; Thus, the user equipment may transmit the uplink BSR information of the logical channel controlled by the secondary eNB on the uplink carrier component of the secondary eNB. Alternatively, if the above assumptions are not maintained, the user equipment may simultaneously transmit the uplink BSR information to the master eNB and the auxiliary eNB, so that the master eNB and the auxiliary eNB know the relevant information as soon as possible. The uplink PHR information of the uplink carrier component for the master eNB will be transmitted on the cell controlled by the master eNB and the uplink PHR information of the uplink carrier component for the secondary eNB will be transmitted on the cell controlled by the secondary eNB , The downlink CSI information of the downlink carrier component for the master eNB will be transmitted on the cell controlled by the master eNB and the downlink CSI information of the downlink carrier component for the secondary eNB will be transmitted on the cell controlled by the secondary eNB Lt; / RTI >

It should be understood by those of ordinary skill in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments are to be construed as illustrative and not restrictive in any way. Furthermore, to be clear, the term "comprising" does not exclude other element (s) or step (s), and the term " one & The plurality of elements referred to in the device claim may alternatively be implemented as a single element. The terms "first "," second ", and the like, are intended to denote a name, rather than to suggest any particular order.

Claims (14)

A method for supporting dual connectivity in a master eNB of a carrier aggregation based wireless communication system,
The master eNB receives scheduling-related scheduling information from an auxiliary eNB or a user equipment, or transmits the scheduling-related scheduling information to an auxiliary eNB
Lt; / RTI >
Wherein the scheduling-related scheduling information includes at least one of Buffer Status Report (BSR) information and Power Headroom Report (PHR) information. The method according to claim 1,
The auxiliary eNB manages one or more small cells,
The method
Transmitting control signaling to the user equipment, the control signaling instructing the user equipment to add a small cell;
Receiving a first acknowledgment message from the user equipment in response to the control signaling;
Sending a first indication message to the ancillary eNB, the first indication message indicating that the master eNB has added the small cell to the user equipment; And
Receiving a second acknowledgment message from the secondary eNB in response to the first indication message
≪ / RTI > 3. The method according to claim 1 or 2,
When the master eNB receives the scheduling-related scheduling information from the auxiliary eNB or transmits the scheduling-related scheduling information to the auxiliary eNB, the master eNB receives the scheduling-related scheduling information from the auxiliary eNB through X2 signaling And transmitting the scheduling-related scheduling information to the auxiliary eNB. The method of claim 3,
The X2 signaling
User equipment identifier (UE_ID);
Small cell index; And
At least one of uplink BSR information and downlink channel status information
≪ / RTI > 3. The method according to claim 1 or 2,
Wherein the user equipment transmits the scheduling related scheduling information to the master eNB only when the master eNB receives the scheduling related scheduling information from the user equipment. 6. The method of claim 5,
For an uplink BSR or an uplink PHR, the user equipment selects only active uplink carrier components controlled by the master eNB to transmit the scheduling information. 6. The method of claim 5,
Wherein when the downlink CQI feedback is transmitted on the PUSCH, the user equipment selects a small cell to transmit the scheduling information according to a predetermined rule. A method for supporting dual access in an auxiliary eNB of a carrier aggregation based wireless communication system,
Receiving the scheduling-related scheduling information from the master eNB or the user equipment, or transmitting the scheduling-related scheduling information to the master eNB
Lt; / RTI >
Wherein the scheduling related scheduling information includes at least one of BSR information and PHR information. 9. The method of claim 8,
The auxiliary eNB manages one or more small cells,
The method
Receiving a first indication message from the master eNB, the first indication message indicating that the master eNB has added a small cell for the user equipment; And
Transmitting a second acknowledgment message to the master eNB in response to the first indication message
≪ / RTI > 10. The method according to claim 8 or 9,
Wherein the auxiliary eNB transmits the scheduling related scheduling information to the master eNB periodically or via X2 signaling in response to a first request command transmitted from the master eNB. 10. The method according to claim 8 or 9,
Further comprising transmitting to the master eNB second indication information indicating the load status of the small cell through X2 signaling in response to a second request command transmitted periodically or from the master eNB by the auxiliary eNB. 12. The method of claim 11,
When the auxiliary eNB periodically transmits the second indication information indicating the load status of the small cell to the master eNB through X2 signaling, the auxiliary eNB determines that the load status of the auxiliary eNB exceeds the first threshold And transmitting the second indication information indicating the load status of the small cell through the X2 signaling periodically to the master eNB. 12. The method of claim 11,
Wherein the second indication information comprises a user equipment identifier and a cell index. A method for supporting dual access in a user equipment of a carrier aggregation based wireless communication system,
The UE transmits scheduling related scheduling information to the master eNB and the auxiliary eNB,
Wherein the scheduling related scheduling information includes at least one of BSR information and PHR information.
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PCT/IB2014/001061 WO2014181181A1 (en) 2013-05-10 2014-05-09 Method for supporting dual connectivity

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180107649A (en) * 2017-03-22 2018-10-02 에스케이텔레콤 주식회사 Method for reducing uplink transmission delay in dual-connectivity network and terminal applying same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104581972A (en) * 2014-12-30 2015-04-29 同济大学 Transmission method and system for sending plurality of uplink scheduling requests based on FDM (frequency division multiplexing) mode
EP3286957A4 (en) * 2015-04-20 2018-12-12 Nokia Solutions and Networks Oy Method and apparatus for handling data activity of a secondary cell
CN107277850B (en) 2016-04-01 2022-04-19 北京三星通信技术研究有限公司 Control method for wireless local area network aggregation and related equipment
WO2017171470A1 (en) * 2016-04-01 2017-10-05 Samsung Electronics Co., Ltd. Method for controlling wireless local area network aggregation and associated equipment
CN109314986B (en) 2016-10-19 2021-03-05 华为技术有限公司 Method and device for transmitting buffer status report

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458258A (en) * 2008-02-04 2009-09-16 Nec Corp Method of controlling base station loading in a mobile communication system
US8223708B2 (en) * 2008-06-10 2012-07-17 Innovative Sonic Limited Method and apparatus for handling scheduling information report
US8908625B2 (en) * 2009-11-02 2014-12-09 Kyocera Corporation Radio communication system, low-power base station, high-power base station, radio terminal, and radio communication method
CN108124287B (en) * 2010-02-12 2021-07-20 交互数字技术公司 Wireless transmit and receive unit WTRU and method
KR101831281B1 (en) * 2010-04-06 2018-02-23 삼성전자주식회사 Device and method for handling scheduling information in wireless communication system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Alcatel-Lucent etal, "Discussion on the RRCprotocolsupportingdualconnectivity", 3GPP TSGRANWG2Meeting#81bis, R2-131352*
Nokia Corporation etal, "Mobility Statistics for Macro and Small Cell Dual-Connectivity Cases", 3GPP TSG-RANWG2 Meeting #81bis, R2-131056*
NTT DOCOMO, "Physical Layer Design for Dual Connectivity", 3GPP TSG RAN WG1 Meeting #72, R1-130409*

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180107649A (en) * 2017-03-22 2018-10-02 에스케이텔레콤 주식회사 Method for reducing uplink transmission delay in dual-connectivity network and terminal applying same
KR102186906B1 (en) 2017-03-22 2020-12-04 에스케이텔레콤 주식회사 Method for reducing uplink transmission delay in dual-connectivity network and terminal applying same

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