WO2016165460A1

WO2016165460A1 - Mbsfn subframe allocation method and device for embms function

Info

Publication number: WO2016165460A1
Application number: PCT/CN2016/073697
Authority: WO
Inventors: 王代锋
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-15
Filing date: 2016-02-05
Publication date: 2016-10-20
Also published as: CN106162567A

Abstract

Disclosed are an MBSFN subframe allocation method and device for an eMBMS function, which relate to the technical field of wireless communications. The method comprises: according to an MCE side configuration, acquiring an ABS subframe set and an MBSFN subframe set; according to the acquired ABS subframe set and MBSFN subframe set, obtaining an MBSFN subframe allocation set of an eMBMS function; and according to the MCE side configuration, allocating an MBSFN subframe from the obtained MBSFN subframe allocation set of the eMBMS function to the eMBMS function. Since the configuration condition of an ABS subframe in an eICIC function is comprehensively considered, the conflict between an MBSFN subframe in an eMBMS function and the ABS subframe in the eICIC function is effectively avoided, thereby increasing the probability of effective coexistence of the two functions.

Description

EMBMS function MBSFN subframe allocation method and device

Technical field

The present invention relates to the field of wireless communication technologies, for example, to an enhanced multimedia broadcast/multicast service (eMBMS) function multicast/multicast single frequency network (MBSFN). Frame allocation method and device.

Background technique

The 3rd Generation Partnership Project (3GPP) introduced the Multimedia Broadcast Multicast Service (MBMS) feature in the R6 version to enable simultaneous transmission of data from data sources to multiple users in a specific range. A point-to-multipoint service enables network resources to be shared, thereby providing multimedia services for a large number of users with the same requirements with fewer resources. Under the LTE network architecture, the implementation framework and mode of the MBMS service at the bearer level have undergone some changes. To distinguish the previous MBMS bearer implementation, it is called eMBMS.

A more important change in eMBMS is the introduction of MBSFN transmission, that is, synchronous transmission in multiple cells at the same frequency at the same time. This transmission mode can save frequency resources, and the diversity effect can enhance the reliability of reception. Sexuality improves coverage. The MBSFN Area (MBSFN Area) refers to a set of cells that implement MBSFN transmission, and can also be understood as the basic unit of eMBMS service transmission.

3GPP introduced enhanced Inter-Cell Interference Coordination (eICIC) in Re1-10 to solve the macro-micro station interference problem under heterogeneous networks. eICIC is a time domain-based inter-cell interference coordination: one or more subframes are configured as "Almost Blank Subframe (ABS)" by a macro cell, and a micro cell/Pico cell/Femto cell is on an ABS subframe. The service is provided for the cell edge user equipment (UE), thereby avoiding the main interference (from the macro cell), thereby improving the service rate of the cell edge UE. Here, in the "Time domain resource partitioning" which is one type of the "eICIC" control method, in order to reduce interference between cells, it is possible to use not only the ABS but also the MBSFN subframe.

The 36.331 protocol specifies the location of the MBSFN subframe in the radio frame, and the Frequency Division Duplexing (FDD) is the subframes 1#, 2#, 3#, 6#, 7#, 8#, and the time division duplex ( Time Division Duplexing (TDD) is a downlink subframe in 3#, 4#, 7#, 8#, 9#. When an MBSFN subframe is used for other purposes (such as MBMS), an evolved Node B (eNB) cannot configure an MBSFN subframe as an ABS. Therefore, in a cell that is enabled simultaneously with eMBMS function and eICIC function, the allocation of ABS subframes will be greatly affected.

Summary of the invention

The embodiment of the invention provides an eMBMS function MBSFN subframe allocation method and device, which solves the problem of conflict between the eMBMS function MBSFN subframe and the eICIC function ABS subframe in the related art.

According to an aspect of the embodiments of the present invention, an eMBMS function MBSFN subframe allocation method is provided, including:

Acquiring an ABS subframe set and an MBSFN subframe set according to a Multi-cell/Multicast Coordination Entity (MCE) side configuration;

Obtaining an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set;

According to the MCE side configuration, an MBSFN subframe is allocated for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function.

The acquiring the ABS subframe set and the MBSFN subframe set according to the MCE side configuration may include:

Obtaining an ABS subframe set of the eICIC function of the base station side according to the MCE side configuration;

Obtain an MBSFN subframe set according to the MCE side configuration.

The ABS subframe set may have one or more subsets having different ABS priority allocation levels.

The set of MBSFN subframe allocations of the eMBMS function may include:

The first set of the ABS subframe set is not included in the MBSFN subframe set;

The MBSFN subframe set includes a second set of the ABS subframe set.

The eMBMS function is obtained from the obtained MBSFN subframe allocation set of the eMBMS function. The ability to allocate MBSFN subframes may include:

When the number of subframes in the first set satisfies the number of subframes required by the eMBMS function, then allocate an MBSFN subframe for the eMBMS function from the first set;

When the number of subframes in the first set does not satisfy the number of subframes required by the eMBMS function, an MBSFN subframe is allocated for the eMBMS function from the first set and the second set.

When the ABS subframe set has multiple subsets, the higher the ABS priority allocation level of the subset, the lower the MBSFN subframe priority allocation level of the second set may be.

According to another aspect of the present invention, an eMBMS function MBSFN subframe allocation apparatus is provided, including:

The acquiring module is configured to obtain an ABS subframe set and an MBSFN subframe set according to the MCE side configuration, and obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set;

The allocation module is configured to allocate an MBSFN subframe for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function according to the MCE side configuration.

The obtaining module may include:

The first acquiring unit is configured to acquire an ABS subframe set of the eICIC function of the base station side according to the MCE side configuration;

a second acquiring unit, configured to acquire an MBSFN subframe set according to an MCE side configuration;

The third obtaining unit is configured to obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set.

The set of MBSFN subframe allocations of the eMBMS function may include:

The MBSFN subframe set includes a second set of the ABS subframe set.

Compared with related technologies, the beneficial effects of the embodiments of the present invention are:

The embodiment of the present invention comprehensively considers the configuration of the ABS subframe in the eICIC function, and effectively avoids The eMBMS function MBSFN subframe conflicts with the ABS subframe in the eICIC function, increasing the probability that the two functions coexist effectively.

BRIEF abstract

FIG. 1 is a flowchart of an MBMSN subframe allocation method for an eMBMS function according to an embodiment of the present invention;

2 is a schematic diagram of an eMBMS function MBSFN subframe allocation apparatus according to an embodiment of the present invention;

FIG. 3 is a flowchart of MBSFN subframe allocation on the MCE side according to an embodiment of the present invention.

Embodiments of the invention

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of an MBMSN subframe allocation method for an eMBMS function according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

Step S101: Acquire an ABS subframe set and an MBSFN subframe set according to the MCE side configuration.

Step S102: Obtain an MBSFN subframe allocation set of an eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set.

Step S103: According to the MCE side configuration, the MBSFN subframe is allocated for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function.

The acquiring the ABS subframe set and the MBSFN subframe set according to the MCE side configuration may include: acquiring an ABS subframe set of the eICIC function of the base station side according to the MCE side configuration; and acquiring the MBSFN subframe set according to the MCE side configuration. The ABS subframe set has one or more subsets, and the multiple subsets have different ABS priority allocation levels.

The MBSFN subframe allocation set of the eMBMS function may include: the MBSFN subframe set does not include the first set of the ABS subframe set; and the MBSFN subframe set includes the ABS subframe set The second set.

Allocating an MBSFN subframe for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function may include: when the number of subframes in the first set meets the number of subframes required by the eMBMS function And allocating an MBSFN subframe for the eMBMS function from the first set; when the number of subframes in the first set does not satisfy the number of subframes required by the eMBMS function, then from the first set And assigning an MBSFN subframe to the eMBMS function in the second set. Wherein, when the ABS subframe set has multiple subsets, the higher the ABS priority allocation level of the subset, the lower the MBSFN subframe priority allocation level of the second set.

FIG. 2 is a schematic diagram of an eMBMS function MBSFN subframe allocation apparatus according to an embodiment of the present invention. As shown in FIG. 2, the method includes: an obtaining module 201 and an allocating module 202. The acquiring module 201 is configured to obtain an ABS subframe set and an MBSFN subframe set according to the MCE side configuration, and obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set. The allocating module 202 is configured to allocate an MBSFN subframe for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function according to the MCE side configuration.

The obtaining module 201 includes: a first acquiring unit configured to acquire an ABS subframe set of the eICIC function of the base station side according to the MCE side configuration; and a second acquiring unit configured to acquire the MBSFN sub according to the MCE side configuration a third set of obtaining units configured to obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set. The ABS subframe set may have one or more subsets having different ABS priority allocation levels. The MBSFN subframe allocation set of the eMBMS function includes: the MBSFN subframe set does not include the first set of the ABS subframe set; and the MBSFN subframe set includes the second of the ABS subframe set set.

FIG. 3 is a flowchart of an MCE-side MBSFN subframe allocation according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:

Step S301: Acquire a base station side ABS subframe allocation set A;

The set A is an eICIC function ABS subframe set on the base station side, and is configured on the MCE side. The set A can be divided into different subsets {A1, A2, ... An}, and Ai has different ABS priority allocation levels.

Step S302: Acquire an MBSFN subframe allocation set M;

The MBSFN subframe allocation set M is obtained according to the MCE side configuration.

Step S303: taking a non-A subframe set M_B in the set M;

According to the set A and the set M, the non-A subframe set M_B in the set M is taken, that is, the MBSFN subframe priority allocation set of the eMBMS function.

Step S304: taking the subframe set M_A of A in the set M;

According to the set A and the set M, the subframe set M_A of A in the set M is taken, that is, the MBSFN subframe priority allocation of the eMBMS function or the eMBMS function disable set. The subframe set M_A may be a set {M_A1, M_A2, ... M_An} according to different subsets {A1, A2, ... An} of the set A and the set of subframes M, and the M_Ai has different MBSFN subframe priority allocation. grade.

Step S305: An MBSFN subframe may be allocated for the eMBMS function in the set M_B.

According to the MCE side configuration, an MBSFN subframe is allocated for the eMBMS function in the set M_B.

Step S306: When the MBSFN subframe is insufficient for the eMBMS function in the set M_B, the subframe in the priority set M_A is taken.

If the number of sets of M_B subframes is insufficient to satisfy the number of subframes required by the eMBMS function, the subframes in the set M_A are redistributed. If the attribute of the M_A subframe set is disabled, the allocation of the MBSFN subframes of the eMBMS function fails.

That is to say, all the subframes allocated to the eMBMS function in the set M_B and the set M_A are the MBSFN subframes of the eMBMS function. If the number of the set M_B subframes is insufficient to meet the number of subframes required by the eMBMS function, the subframes in the M_Ai may be allocated according to different level attributes of the M_Ai; wherein, if the ABS of the subset Ai is assigned a higher priority than the ABS of the subset Aj If the priority is assigned, the MBSFN subframe priority allocation level of the set M_Ai is lower than the MBSFN subframe priority allocation level of M_Aj.

The invention will now be described in three embodiments:

Embodiment 1:

Under the FDD system, assume that the ABS subframe set A is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
1#、2#1#, 2#	7#7#		3#3#

The radio frame allocation period of the MCE side is 4rf. In the FDD system, the MBSFN subframe set M is:

Take the non-A subframe set M_B in the set M

Assuming that the eMBMS function requires 11 MBSFN subframes in four radio frames, the subframe set allocated to the eMBMS function is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
3#、6#、7#、8#3#, 6#, 7#, 8#	1#、2#、3#、6#、8#1#, 2#, 3#, 6#, 8#	1#、2#1#, 2#

Embodiment 2:

Under the TDD1 system, it is assumed that the ABS subframe set A is:

第一个无线帧First radio frame	第二个无线帧Second radio frame
0#、5#、4#0#, 5#, 4#	0#、5#0#, 5#

The radio frame allocation period of the MCE side is 4rf. In the TDD1 system, the MBSFN subframe set M is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
4#、9#4#, 9#	4#、9#4#, 9#	4#、9#4#, 9#	4#、9#4#, 9#

Take the non-A subframe set M_B in the set M

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
9#9#	4#、9#4#, 9#	9#9#	4#、9#4#, 9#

Take the subframe set M_A of A in the set M

First radio frame

Second radio frame

Third wireless frame

Fourth wireless frame

4#

Assuming that the eMBMS function requires seven MBSFN subframes in four radio frames, the subframe set allocated to the eMBMS function is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
4#、9#4#, 9#	4#、9#4#, 9#	9#9#	4#、9#4#, 9#

Embodiment 3:

Under the TDD2 system, it is assumed that the ABS subframe set A is:

第一个无线帧First radio frame	第二个无线帧Second radio frame
0#、3#、4#、5#、9#0#, 3#, 4#, 5#, 9#	0#、3#、4#、5#、9#0#, 3#, 4#, 5#, 9#

The first priority allocation set A1 of the ABS subframe is

第一个无线帧First radio frame	第二个无线帧Second radio frame
0#、4#、5#、9#0#, 4#, 5#, 9#	0#、4#、5#、9#0#, 4#, 5#, 9#

ABS subframe second priority allocation set A2 is

第一个无线帧First radio frame	第二个无线帧Second radio frame
3#3#	3#3#

The radio frame allocation period of the MCE side is 4rf. In the TDD2 system, the MBSFN subframe set M is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
3#、4#、8#、9#3#, 4#, 8#, 9#	3#、4#、8#、9#3#, 4#, 8#, 9#	3#、4#、8#、9#3#, 4#, 8#, 9#	3#、4#、8#、9#3#, 4#, 8#, 9#

Take the non-A subframe set M_B in the set M

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
8#8#	8#8#	8#8#	8#8#

Take the subframe set M_A1 of A1 in the set M

Take the subframe set M_A2 of A2 in the set M

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
3#3#	3#3#	3#3#	3#3#

Assuming that the eMBMS function requires five MBSFN subframes in four radio frames, the subframe set allocated to the eMBMS function is:

第一个无线帧First radio frame	第二个无线帧Second radio frame	第三个无线帧Third wireless frame	第四个无线帧Fourth wireless frame
3#、8#3#, 8#	8#8#	8#8#	8#8#

In summary, the embodiments of the present invention have the following technical effects:

The embodiment of the invention effectively reduces the collision with the ABS subframe, so that the eMBMS function and the eICIC function coexist effectively.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various modifications may be made to the embodiments of the present invention by those skilled in the art. Therefore, modifications made in accordance with the embodiments of the present invention should be understood as falling within the scope of the present invention.

Industrial applicability

The present application discloses an eMBMS function MBSFN subframe allocation method and device, and relates to the field of wireless communication technologies. The method includes: acquiring an ABS subframe set and an MBSFN subframe set according to the MCE side configuration; obtaining an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set; according to the MCE side configuration, An MBSFN subframe is allocated for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function. The present application comprehensively considers the configuration of the ABS subframe in the eICIC function, thereby effectively avoiding the conflict between the eMBMS function MBSFN subframe and the ABS subframe in the eICIC function, and increasing the probability of effective coexistence of the two functions.

Claims

An enhanced multimedia broadcast/multicast service eMBMS function multicast/multicast single frequency network MBSFN subframe allocation method, comprising:

Obtaining an almost blank subframe ABS subframe set and an MBSFN subframe set according to the MCE side configuration of the multi-cell/multicast coordination entity;

Obtaining an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set;

According to the MCE side configuration, an MBSFN subframe is allocated for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function.
The method according to claim 1, wherein the acquiring the ABS subframe set and the MBSFN subframe set according to the MCE side configuration comprises:

Acquiring an ABS subframe set of the enhanced inter-cell interference coordination eICIC function of the base station side according to the MCE side configuration;

Obtain an MBSFN subframe set according to the MCE side configuration.
The method of claim 2, wherein the set of ABS subframes has one or more subsets, the plurality of subsets having different ABS priority allocation levels.
The method of claim 3, wherein the set of MBSFN subframe allocations of the eMBMS function comprises:

The first set of the ABS subframe set is not included in the MBSFN subframe set;

The MBSFN subframe set includes a second set of the ABS subframe set.
The method according to claim 4, wherein said allocating an MBSFN subframe for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function comprises:

When the number of subframes in the first set satisfies the number of subframes required by the eMBMS function, then allocate an MBSFN subframe for the eMBMS function from the first set;

When the number of subframes in the first set does not satisfy the number of subframes required by the eMBMS function, an MBSFN subframe is allocated for the eMBMS function from the first set and the second set.
The method according to claim 5, wherein when the ABS subframe set has a plurality of subsets, the higher the ABS priority allocation level of the subset, the lower the MBSFN subframe priority allocation level of the second set.
An eMBMS function MBSFN subframe allocation apparatus includes:

The acquiring module is configured to obtain an ABS subframe set and an MBSFN subframe set according to the MCE side configuration, and obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set;

The allocation module is configured to allocate an MBSFN subframe for the eMBMS function from the obtained MBSFN subframe allocation set of the eMBMS function according to the MCE side configuration.
The apparatus of claim 7, wherein the obtaining module comprises:

The first acquiring unit is configured to acquire an ABS subframe set of the eICIC function of the base station side according to the MCE side configuration;

a second acquiring unit, configured to acquire an MBSFN subframe set according to an MCE side configuration;

The third obtaining unit is configured to obtain an MBSFN subframe allocation set of the eMBMS function according to the acquired ABS subframe set and the MBSFN subframe set.
The apparatus of claim 8, wherein the set of ABS subframes has one or more subsets, the plurality of subsets having different ABS priority allocation levels.
The apparatus according to claim 9, wherein the set of MBSFN subframe allocations of the eMBMS function comprises:

The first set of the ABS subframe set is not included in the MBSFN subframe set;

The MBSFN subframe set includes a second set of the ABS subframe set.