WO2012065511A1

WO2012065511A1 - Method and device for triggering reconfiguration of reconfigurable wireless system

Info

Publication number: WO2012065511A1
Application number: PCT/CN2011/081650
Authority: WO
Inventors: 李岩; 李峰; 赵楠; 张力; 周栋; 刘星
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-18
Filing date: 2011-11-01
Publication date: 2012-05-24
Also published as: CN102469595A; CN102469595B

Abstract

A method and device for triggering reconfiguration of a reconfiguration wireless system are disclosed in the present invention, which are used to solve the technical problem that the system performance is reduced or the user experience is influenced as a result of unreasonable resource allocation which is caused by an unreasonable mechanism for triggering the reconfiguration. The technical solution includes: acquiring a parameter which can reflect the current transmission capability of cells requesting the reconfiguration, and a parameter which reflects the basic transmission demand of the cells requesting reconfiguration from a network side; deciding, according to the relationship between the parameter which reflects the current transmission capability of the cells requesting the reconfiguration and the parameter which reflects the basic transmission demand of the cells requesting the reconfiguration, a resource coordination strategy among the cells requesting the reconfiguration. The present invention introduces a judgement mechanism when the reconfiguration is triggered in the cell and avoids malicious application or unnecessary application of a cell, thereby the cell reconfiguration accuracy rate and the resource allocation rationality are enhanced.

Description

Reconfigurable triggering method and device for reconfigurable wireless system

The present invention relates to the field of wireless communications, and in particular to a reconfiguration triggering method and apparatus for a reconfigurable wireless system. Background technique

The scope of the reconfigurable wireless communication system discussed in the current agreement mainly focuses on how to coordinate the allocation of system resources (including hardware resources and wireless resources) within a certain range when the system has excessive cell load and needs reconfiguration, so that the system performance Get the most improvement and maximize resource utilization. There is no discussion of the trigger mechanism.

In the reconfiguration trigger, each cell may apply for too many resources in order to improve the performance of the cell. This improves the user experience in the cell but reduces the performance of the system. For example, cell A is lightly loaded and cell B is overloaded. Due to the heavy load, the cell B proposes a reconfiguration requirement and requires more resources. At the same time, the community A also proposes reconfiguration requirements and requires re-allocation of more resources. Thus, if the system reassigns resources to cell A and cell B does not improve, then configuration bias occurs. The increase of bandwidth in cell A is a icing on the cake, and the reconfiguration request of cell B is difficult to satisfy basic communication. Therefore, this reconfiguration does not solve the actual problem and does not achieve the purpose of reconfiguration. Summary of the invention

In view of this, the main object of the present invention is to provide a reconfiguration triggering method and apparatus for a reconfigurable wireless system, which is used to solve the unreasonable triggering mechanism of the reconfiguration, resulting in unreasonable resource allocation, thereby reducing system performance or impact. The technical problem that users feel.

In order to achieve the above object, the technical solution of the present invention is achieved as follows: A reconfiguration triggering method for a reconfigurable wireless system, the method comprising:

Obtaining a parameter capable of reflecting a current transmission capability of the cell requesting reconfiguration, and obtaining, from the network side, a parameter reflecting a basic transmission requirement of the cell for which the request is reconfigured;

Determining a resource coordination policy between the cells requesting reconfiguration according to a relationship between a parameter reflecting a current transmission capability of a cell that requests reconfiguration and a parameter reflecting a basic transmission requirement of the cell that is requested to be reconfigured.

The parameter reflecting the current transmission capability of the cell requesting reconfiguration includes at least one or more of the following parameters: a parameter reflecting the load, and a parameter reflecting the resource usage;

The parameter reflecting the basic transmission requirement of the cell requesting reconfiguration includes at least: quality of service information, number of users who have not released the context.

Further, the parameter that reflects the current transmission capability of the cell that requests the reconfiguration is from the base station; the parameter that reflects the basic transmission requirement of the cell that requests the reconfiguration is obtained by querying the mobility management entity for the cell of the request reconfiguration in the initial context. User information obtained during the establishment process is obtained.

Further, the content of the resource coordination policy between the cells requesting reconfiguration includes at least: a cell that needs to be reconfigured, a reconfiguration sequence of a cell that needs to be reconfigured, and a resource allocation between cells that need to be reconfigured. Strategy.

According to a preferred embodiment of the present invention, the resource coordination policy between the cells requesting reconfiguration is specifically: determining a cell that is reconfigured with a current transmission capability smaller than a basic transmission requirement as a priority reconfiguration cell, After the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for reconfiguration of other cells that request reconfiguration.

According to a preferred embodiment of the present invention, the parameter that reflects the basic transmission requirement of the cell that requests reconfiguration further includes user level information; and the resource coordination policy between the cells requesting reconfiguration is specifically: A cell that is requested to be reconfigured with a capability smaller than the basic transmission requirement is determined as a cell that is preferentially reconfigured, and a reconfiguration request that includes a cell having a large number of high-level users is preferentially satisfied in the preferentially reconfigured cell; Relocation request after the cell, remaining The resources are reused for reconfiguration of other cells that request reconfiguration.

Based on the above method, the present invention also provides a reconfiguration triggering device for a reconfigurable wireless system, the device comprising:

a transmission capability acquisition module, configured to acquire a parameter that can reflect a current transmission capability of a cell that is requested to be reconfigured; and the parameter that reflects a current transmission capability of the cell that is requested to be reconfigured includes at least one of the following: a parameter reflecting the load, and a parameter reflecting the resource usage. ;

a transmission requirement acquisition module, configured to acquire, from the network side, a parameter that reflects a basic transmission requirement of the cell that is requested to be reconfigured; the parameter that reflects a basic transmission requirement of the cell that requests reconfiguration includes at least: quality of service information, unreleased context Number of users;

And a re-matching triggering determining module, configured to determine, according to a relationship between a parameter of a current transmission capability of the cell that reflects the request reconfiguration and a parameter of a basic transmission requirement of the cell that is requested to be reconfigured, in the cell that is requested to be reconfigured Resource coordination strategy between.

The transmission capability acquisition module acquires, from the base station, the parameter that reflects the current transmission capability of the cell that requests reconfiguration;

The transmission requirement acquisition module obtains the parameter of the basic transmission requirement of the cell reflecting the request reconfiguration by querying the mobility management entity for the user information that the request reconfiguration cell interacts in the initial context establishment process.

Further, the reconfiguration triggering determining module determines, as a priority reconfiguration, a cell that has a current retransmission request that is less than the basic transmission requirement, and the remaining resources after the reconfiguration request of the preferentially reconfigured cell is satisfied. It is used for reconfiguration of other cells that request reconfiguration.

Further, the transmission requirement acquisition module is further configured to acquire user level information; the reconfiguration trigger determination module determines, as a priority reconfiguration, a cell that is currently reconfigured with a current transmission capability smaller than a basic transmission requirement. The reconfigured cell preferentially satisfies the reconfiguration request of the cell including the high number of users; after the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for reconfiguration of other cells that request reconfiguration . When the cell triggers reconfiguration, the invention introduces a discriminating mechanism to avoid malicious application or non-requirement of the cell, thereby improving the accuracy of cell reconfiguration and the rationality of resource allocation. DRAWINGS

Figure 1 is a flow chart of the method of the present invention;

2 is a schematic flowchart of Embodiment 1 of the present invention;

3 is a schematic flowchart of Embodiment 2 of the present invention;

Figure 4 is a schematic view showing the structure of the apparatus of the present invention. detailed description

The basic idea of the present invention is: When a cell triggers reconfiguration, a discriminating mechanism is introduced to avoid a malicious application or a non-required application to improve the accuracy of cell reconfiguration.

FIG. 1 is a flowchart of a reconfiguration triggering method for a reconfigurable wireless system according to the present invention, which mainly includes the following steps:

Step A: Obtain a parameter that can reflect the current transmission capability of the cell that is requested to be reconfigured. The method does not limit the manner of obtaining the parameter of the current transmission capability of the cell that reflects the request reconfiguration, and may be carried by the reconfiguration request, or may be adopted. The added signaling message or extended other existing signaling messages are obtained from the base station.

The parameter reflecting the current transmission capability of the cell requesting reconfiguration includes at least one or more of the following: a parameter reflecting the load, a parameter reflecting the resource usage, such as a bandwidth ratio for the service transmission or a usage ratio of the hardware resource; and an average channel quality. Wait;

Step B: Obtain, from the network side, a parameter that reflects a basic transmission requirement of the cell that is requested to be reconfigured;

The present invention does not limit the parameter mode for obtaining the basic transmission requirement of the cell that is requested to be reconfigured, and may be obtained by adding a new signaling message or extending other existing signaling messages. Specifically, the present invention obtains a request by acquiring a request from the network side. The assigned cell is established during the context management process. The user information is used to obtain a parameter reflecting the basic transmission requirement of the cell requesting reconfiguration; the parameter reflecting the basic transmission requirement of the cell requesting reconfiguration includes at least: quality of service information, number of users who have not released the context.

Step C: Determine, according to the acquired relationship between the parameter of the current transmission capability of the cell that requests the reconfiguration and the parameter of the basic transmission requirement, a resource coordination policy between the cells that request reconfiguration;

The content of the resource coordination policy between the cells requesting reconfiguration includes at least: a cell that needs to be reconfigured, a reconfiguration order of cells that need to be reconfigured, and a resource allocation policy between cells that need to be reconfigured.

The present invention will be further described in detail below with reference to the accompanying drawings.

Example 1

2 is a flowchart of a method in this embodiment. In this embodiment, cells 1-3 are LTE cells, respectively, and each has a 10 MHz working bandwidth.

Step 101: The cells 1-3 need to be reconfigured, and each cell sends a reconfiguration request. The reconfiguration request carries the load conditions (high, high, high) and average channel quality (4 dB respectively). , 5dB, 6dB) reconfiguration trigger parameters;

Step 102: Inquire the MME about the information about the user that each cell interacts in the initial context establishment process (INITIAL CONTEXT SETUP), such as a QoS Class Identifier (QCI) information element, and a guaranteed bit rate of three cells ( Guaranteed Bit) Rate, GBR) (128kbit/s, 256 kbit/s, 512 kbit/s, respectively); the reconfiguration trigger judgment module determines to the MME the number of users whose context has not been released by each cell (80, 60, 50 respectively) ;

Step 103: According to the average channel quality of each cell, and the working bandwidth of each cell, the mapping obtains the average throughput that each cell can provide (Tl, Τ2, Τ3 respectively); Since the average channel quality has a corresponding relationship with the spectral efficiency, the average throughput of the cell can be obtained by the average channel quality of each cell.

Step 104: Determine, according to the GBR information in the QCI information element and the number of users that have not released the context, the equivalent GBR of each cell (GBR1, GBR2, GBR3, respectively);

The method for determining the equivalent GBR of each cell is as follows: The GBR of each service in each cell is integrated, and the equivalent GBR of each cell is obtained by weighted average calculation.

Step 105: Comparing the results of steps 103 and 104, if T1 is smaller than GBR1, T2 is greater than GBR2, and T3 is greater than GBR3, then the reconfiguration trigger determination module determines that the resource of the cell 1 reconfiguration request is to meet basic communication requirements, and the cell 2-3 Re-matching is required to improve capacity or user experience while satisfying basic calls;

Step 106: In the reconfiguration process, the system first considers to coordinate resources for the cell 1; if there are resources, consider the cells 2-3 to coordinate resources.

The priority reconfiguration policy based on this embodiment is to first satisfy the resource requested by the reconfiguration request proposed for the basic communication requirement, and then consider the resource requested by the reconfiguration request proposed to increase the capacity or the user experience. By this embodiment, the resource allocation of each cell can be balanced, thereby avoiding a reduction in the overall performance of the system. Example 2

FIG. 3 is a flowchart of a method in this embodiment. In this embodiment, cells 1-3 are LTE cells, respectively, and each has a working bandwidth of 10 MHz.

Step 201: The cells 1-3 need to be reconfigured, and each cell sends a respective reconfiguration request.

In this embodiment, the load conditions of each cell (high, high, and high, respectively) and the average channel quality (4 dB, 5 dB, and 6 dB, respectively) are obtained through newly added signaling messages.

Step 202: Inquire the MME about the information about the user interacting in the initial context establishment process (INITIAL CONTEXT SETUP), such as the QCI information element, the GBR of the three cells (128 kbit/s, 256 kbit/s, 512 kbit/s, respectively) ); determine to the MME that each cell has not been released The number of users in the context (80, 60, 50 respectively) and the user's level information. The number of high-level (VIP) users in the cell 1 is the highest, the number of VIP users in the cell 2 is the second, and the number of VIP users in the cell 3 is the least;

Step 203: According to the average channel quality of each cell, and the working bandwidth of each cell, mapping the average throughput that each cell can provide (Tl, Τ2, Τ3, respectively);

Step 204: Determine, according to the GBR information in the QCI information unit and the number of users, an equivalent GBR (GBR1, GBR2, GBR3) of each cell;

Step 205: Comparing the results of steps 103 and 104, T1 is smaller than GBR1, T2 is smaller than GBR2, and T3 is smaller than GBR3, and resources are allocated preferentially for cells with a large number of high-level users; for example, the proportion of VIP users in cell 1 is the highest, so the system first considers Coordinate resources for cell 1; if there are resources, consider coordinating resources for cell 2-3.

The priority reconfiguration policy is based on the fact that, in the case that the resources of all the cells cannot meet the basic communication requirements, the resources of the high-level users are preferentially allocated according to the number of high-level users in each cell, for example, the resources can be pressed. The number of high-level users is proportional to resources. Through this embodiment, the business requirements of high-level users can be maximized, and the business experience of high-level users can be improved.

Example 3

4 is a logical structure diagram of the apparatus of the present invention, the apparatus 300 includes: a transmission capability acquisition module 301, a transmission requirement acquisition module 302, and a reconfiguration trigger determination module 303;

The transmission capability acquisition module 301 is configured to obtain a parameter that can reflect the current transmission capability of the cell that is requested to be reconfigured. The parameter that reflects the current transmission capability of the cell that requests reconfiguration includes at least one of the following: a parameter reflecting the load, and a resource usage is reflected. parameter.

Preferably, the transmission capability acquisition module 301 may obtain, by using a reconfiguration request message or a newly added signaling message or an extended other existing signaling message sent by each cell, the current transmission capability of the cell that reflects the request reconfiguration from the base station. Parameter The transmission requirement acquisition module 302 is configured to obtain, from the network side, a parameter that reflects a basic transmission requirement of the cell that is requested to be reconfigured; the parameter that reflects a basic transmission requirement of the cell that requests reconfiguration includes at least: quality of service information, not released The number of users in the context;

Preferably, the transmission requirement acquisition module 302 queries the mobility management entity for the user information that the cell that requested the reconfiguration interacts in the initial context establishment process by using the newly added signaling message or the extended existing signaling message, thereby obtaining the reflection. A parameter of the basic transmission requirement of the cell requesting reconfiguration.

The re-suppression triggering module 303 is configured to: according to the parameter that is used by the transmission capability acquiring module 301 to reflect the current transmission capability of the re-provisioned cell, and the parameter that is obtained by the transmission requirement acquisition module 302 and reflects the basic transmission requirement of the cell that is requested to be reconfigured. The relationship between the two is to determine a resource coordination strategy between the cells that request reconfiguration.

Preferably, the reconfiguration trigger judging module 303 determines, as the priority reconfiguration, the cell that the current transmission capability is less than the basic retransmission request reconfiguration, after the reconfiguration request of the priority reconfiguration cell is satisfied, the remaining resources are re Reconfiguration for cells that request reconfiguration.

Preferably, the transmission requirement acquisition module 302 is further configured to acquire user level information; the reconfiguration trigger determination module 303 determines, as a priority reconfiguration cell, a cell that is currently reconfigured with a request that is less than a basic transmission requirement. The reconfigured cell preferentially satisfies the reconfiguration request of the cell including the high number of users; after the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for reconfiguration of other cells that request reconfiguration .

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Industrial applicability

When the cell triggers reconfiguration, the discriminating mechanism is introduced to avoid malicious application or non-requirement of the cell, thereby improving the accuracy of cell reconfiguration and the rationality of resource allocation.

Claims

Claim

1. A reconfiguration triggering method for a reconfigurable wireless system, the method comprising:

2. The method according to claim 1, wherein

The method according to claim 2, wherein the parameter reflecting the current transmission capability of the cell requesting reconfiguration is from a base station; the parameter reflecting the basic transmission requirement of the cell requesting reconfiguration is obtained by querying the mobility management entity The cell that requests the reconfiguration is obtained by the user information that is interacted during the initial context establishment process.

The method according to any one of claims 1 to 3, wherein the content of the resource coordination policy between the cells requesting reconfiguration includes at least: a cell that needs to be reconfigured, and a cell that needs to be reconfigured. Reassignment order and resource allocation strategies between cells that need to be reconfigured.

The method according to claim 2 or 3, wherein the resource coordination policy between the cells requesting reconfiguration is specifically:

Determining a cell with a current retransmission request that is less than the basic transmission requirement as a cell that is preferentially reconfigured. After the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for other cells that request reconfiguration. Rematch.

The method according to claim 5, wherein the parameter reflecting a basic transmission requirement of the cell requesting reconfiguration further includes user level information;

The resource coordination strategy of the decision between cells requesting reconfiguration is specifically:

Determining a cell that is reconfigured with a current transmission capability that is smaller than the basic transmission requirement as a cell that is preferentially reconfigured, and preferentially satisfying a reconfiguration request of a cell that includes a large number of users with a high level of priority in the preferentially reconfigured cell; After the reconfiguration request of the preferentially reconfigured cell, the remaining resources are reused for reconfiguration of other cells that request reconfiguration.

7. A reconfigurable triggering device for a reconfigurable wireless system, the device comprising:

8. The apparatus according to claim 7, wherein

9. The apparatus according to claim 7 or 8, wherein

The reconfiguration trigger determination module reconfigures a request with a current transmission capability smaller than a basic transmission requirement. The cell is determined to be a cell that is preferentially reconfigured. After the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for reconfiguration of other cells that request reconfiguration.

10. Apparatus according to claim 7 or 8, wherein

The transmission requirement acquisition module is further configured to acquire user level information; the reconfiguration trigger determination module determines, as a priority reconfiguration, a cell that is requested to be reconfigured with a current transmission capability smaller than a basic transmission requirement, where the priority reconfiguration is performed. A reconfiguration request of a cell including a large number of high-level users is preferentially satisfied in the cell; after the reconfiguration request of the preferentially reconfigured cell is satisfied, the remaining resources are reused for reconfiguration of other cells that request reconfiguration.