WO2010072071A1

WO2010072071A1 - Cell measurement method and device in multi-carrier system

Info

Publication number: WO2010072071A1
Application number: PCT/CN2009/072822
Authority: WO
Inventors: 韩小江; 赵刚
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-12-23
Filing date: 2009-07-17
Publication date: 2010-07-01
Also published as: CN101765130A

Abstract

A cell measurement method and device in multi-carrier system. The method includes: configuring measurement carrier of a cell, establishing an adjacent cell measurement carrier table according to measurement carrier of each adjacent cell of the cell; while cell measurement is needed, measuring the measurement carrier of the adjacent cell by terminal according to the established adjacent cell measurement carrier table, completing cell measurement. The device includes: carrier configuration module, carrier table configuration module, carrier measurement module. The configuration module is used to select a part of carrier in the cell as measurement carrier (201); the carrier table configuration module is used to configure and establish the adjacent cell measurement carrier table according to the cell measurement carrier information of each adjacent cell (202); the carrier measurement module is used to measure the measurement carrier of the adjacent cell in turn and obtain measurement result according to the configured adjacent cell measurement carrier table (203).

Description

Cell measurement method and device in multi-carrier system

Technical field

The present invention relates to cell measurement techniques in a wireless communication system, and more particularly to a cell measurement method and apparatus in a wireless communication carrier system. Background technique

With the continuous development of wireless communication systems and the continuous improvement of user requirements, in the third generation (3G) standard, the maximum moving speed required to support mobile terminals is 200Km/H, and the demand in the fourth generation (4G) standard is The maximum mobile speed of the mobile terminal is 500Km/H, so as to support normal communication of users in various high-speed scenes. It can be seen that in 3G, 4G and later wireless communication systems, high-speed mobile terminals are a common terminal group in the system, ensuring the communication quality of terminals under high-speed movement and reducing interference between mobile terminals is a critical issue.

The cell measurement is based on the idle (IDLE) state of the mobile terminal for cell reselection, and the mobile terminal based on the ACTIVE state performs a measurement process when switching, which is an important link for ensuring the communication quality of the high-speed mobile terminal. In the current wireless communication system, the cell measurement of the system is based on the reference signal received power (RSRP) of the carrier or the primary carrier in the cell and the Reference Signal Received Quality (RSRG) for cell measurement. However, for the now-developed ultra-large bandwidth multi-carrier system, it is impossible to completely measure the cell by measuring only one carrier and the primary carrier in the cell carrier. Generally, the cell is measured by the reference signal, and only the large-scale fading of the carrier in the cell can be measured. In the current large-bandwidth system, the carrier is also a large bandwidth, and the signal fading difference between the carriers is large, and the cell is in the cell. Different carrier fading cannot be used as a basis for estimating a carrier measurement. This method cannot completely measure the cell. For discrete carriers, this method cannot fully measure the cell. The large bandwidth multi-carrier refers to multiple working frequency points in a cell in the system, and the multi-carrier refers to multiple working frequency points.

In a multi-carrier system, if all the carriers are measured in order to avoid measuring a certain carrier and all the carriers are measured, all the cell carriers of all neighboring cells need to be involved in the broadcast channel (BCH) information, and thus Increased the content overhead of the BCH; and, during measurement The mobile terminal needs to be frequency modulated to all carriers - to make measurements, which greatly increases the complexity of mobile terminal cell measurement. Further, since the number of measurement carriers is increased, the measurement time is increased, and the delay for reselecting the mobile cell reselection and handover is increased. Obviously, existing cell measurement methods and all methods of carrier measurement that may be employed in a multi-carrier system are not suitable for an ever-developing ultra-large bandwidth system. Summary of the invention

In view of this, the main object of the present invention is to provide a cell measurement method and apparatus in a multi-carrier system, which can reduce the complexity, reduce the spectrum overhead and the processing delay while ensuring complete measurement of the cell.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a cell measurement method in a multi-carrier system, including:

Configuring a measurement carrier of the cell, and establishing a neighbor cell measurement carrier list according to the measurement carrier configuration of each neighboring cell of the cell;

When cell measurement is required, the terminal measures the measurement carrier of the neighbor cell according to the established neighbor cell measurement carrier list, and completes the cell measurement.

In the method, the multi-carrier is a plurality of working frequency points in a cell.

Before the measurement of the neighboring cell measurement carrier, the method further includes: configuring, by the system, the auxiliary carrier information corresponding to the measurement carrier in the broadcast information of the cell measurement carrier; and correspondingly, after completing the measurement of the measurement carrier, the method further includes: determining the measurement Whether there is a carrier suitable for the terminal operation in the result, if yes, the current processing flow is ended; otherwise, the system commands the terminal to measure or the terminal self-measures the auxiliary carrier corresponding to the measurement carrier with better measurement result.

In the above solution, the determining measurement result is completed by the terminal itself; or, after the measurement of the measured carrier wave is completed, the method further includes: the terminal reporting the measurement result to the system; the determining the measurement result is completed by the system. The method for reporting the measurement result by the terminal is an optimal reporting, or a threshold reporting, or all reporting.

In the above solution, the measuring carrier of the current cell is specifically: according to the carrier frequency transmission situation of the cell, selecting a partial carrier that can represent a large-scale fading of the cell from all carriers of the cell The measurement carrier of the cell. The selection is: selecting one or more carriers from the spectrum carrier group as the measurement carrier; or selecting one or more carriers from the carrier group with the same large-scale fading between carriers as the measurement carrier.

In the foregoing solution, the configuration of the neighboring cell measurement carrier list is: the terminal measures the current cell carrier, and reports the current cell base station, and the cell configures the measurement carrier of the cell, and each cell exchanges the respective measurement carrier through the information of the base station, and the local cell obtains The measurement carrier corresponding to each neighboring cell is configured to configure a neighboring cell measurement carrier list of the current cell; or, the current cell selects a neighbor according to the measurement result obtained by measuring the neighboring cell carrier by the terminal, and according to the principle that the measurement result has the same or similar large-scale fading The measurement carrier of the cell configures a neighbor cell measurement carrier list of the current cell.

In the foregoing solution, the one neighboring cell corresponds to one or more measurement carriers.

In the above solution, the subcarrier information corresponding to the measurement carrier is configured in the broadcast information of the cell measurement carrier, and the parameter, or a field or a field for adding the auxiliary carrier information is added to the broadcast information of the measurement carrier.

The present invention provides a cell measurement apparatus in a multi-carrier system, including: a carrier configuration module, a carrier list configuration module, and a carrier measurement module, where

a carrier configuration module, configured to select a part of carriers in the cell as a measurement carrier;

a carrier list configuration module, configured to configure, according to cell measurement carrier information of each neighboring cell, a neighbor cell measurement carrier list;

The carrier measurement module is configured to measure the carrier list according to the configured neighboring cell, and sequentially measure the measured carriers of the neighboring cell to obtain a measurement result.

In the above solution, the carrier configuration module is further configured to configure the auxiliary carrier information of the measurement carrier in the broadcast information of the measurement carrier of the current cell. Correspondingly, the carrier measurement module is further configured to be used in all the measurement carriers. When the carrier is suitable for the working of the terminal, the auxiliary carrier corresponding to the measurement carrier with good measurement results is measured.

In the above solution, the device further includes a cell selection module, configured to select a suitable cell according to the measurement result; and the cell selection module is located on the terminal side.

In the above solution, the device further includes a reporting module, configured to report the measurement result of the terminal to the system; correspondingly, the device further includes a cell selection module located on the system side, configured to be used according to the terminal The reported measurement results select the appropriate cell.

The cell measurement method and apparatus in the multi-carrier system provided by the present invention, in the cell measurement process of the multi-carrier system, selects, from all the carriers of the cell, part of the carriers that can represent the large-scale fading of the cell as the measurement carrier of the cell, and According to the cell measurement carrier information, the neighbor cell measurement carrier list is configured, so that the spectrum overhead of the multi-carrier system cell measurement is reduced, the complexity of the mobile terminal is reduced, and the processing delay of the mobile terminal is reduced.

In the specific implementation, the cell measurement can be directly performed by using only the selected part of the carrier; the selected part of the carrier can be used as the measurement carrier, and the unselected carrier is used as the auxiliary carrier to perform cell measurement. The cell measurement method is available for selection. For the first measurement process, the complexity of the cell measurement in the multi-carrier system can be reduced due to the small number of carriers used; for the second measurement process, for the mobile terminal with poor communication environment, the carrier is measured in the cell. The upper channel quality is around the threshold, and when the neighboring cell's measured carrier has a better channel quality carrier, it can select the best neighbor cell. Not only is it more applicable, it is more flexible to use, it can greatly reduce the complexity of processing, improve processing efficiency, and reduce spectrum overhead.

In the present invention, the system can configure a corresponding cell measurement process according to different environments of the mobile terminal, which is more flexible and easy to implement. BRIEF abstract

1 is a schematic diagram of a cell measurement carrier selection manner in the present invention;

2 is a schematic diagram of an implementation process of a cell measurement method according to the present invention;

3 is a schematic diagram of another implementation process of a cell measurement method according to the present invention;

4 is a schematic flowchart of an implementation process of Embodiment 1 of a cell measurement method according to the present invention;

FIG. 5 is a schematic diagram of an implementation process of Embodiment 2 of a cell measurement method according to the present invention;

6 is a schematic structural diagram of an implementation of a cell measurement device according to the present invention;

FIG. 7 is a schematic structural diagram of another implementation of a cell measurement apparatus according to the present invention. Preferred embodiment of the invention The basic idea of the present invention is: in a cell measurement process of a multi-carrier system, selecting a partial carrier that can represent a large-scale fading of a cell as a measurement carrier of a cell from all carriers of the cell, and configuring a neighbor cell measurement carrier list according to the measurement carrier, Then, according to the neighbor cell measurement carrier list, the measurement carrier of the neighboring cell is read, and the neighbor's and area measurement are completed.

Further, the carrier that is not selected as the measurement carrier may be used as the auxiliary carrier of the corresponding measurement carrier, and the auxiliary carrier of the corresponding measurement carrier is configured in the broadcast information of the measurement carrier, and if the measurement carrier is used for measurement, if the suitable terminal cannot be found. For the working carrier, the terminal extracts the auxiliary carrier information corresponding to the measurement carrier with good measurement result, and measures the auxiliary carrier to complete the neighbor cell measurement.

Here, the selection of the measured carrier from the large-scale fading may represent a large-scale fading of the channel of several cell carriers in which the spectrum is close.

1 is a schematic diagram of a cell measurement carrier selection manner in the present invention. In FIG. 1, a horizontal coordinate is a frequency, a hatched portion and a point-filled portion represent different carriers, and some spectrally consecutive carriers form a frequency continuous carrier. Some spectrum-discrete carriers constitute a spectrum discrete carrier 12. When selecting a measurement carrier, one measurement carrier 10 can be selected from consecutive carriers in the spectrum, and the portion filled in points in FIG. 1 can be used except for the measurement carrier 10. As the auxiliary carrier 11.

In practical applications, if there are spectrum discrete carriers in the cell, and/or the spectrum difference between the carriers is large, the measurement carriers need to be separately configured. If the bandwidth of each carrier in the cell is large, for example, the bandwidth is more than 20M, even if it is a frequency continuous carrier, it is necessary to select multiple measurement carriers, such as: from at least every three consecutive such carriers, select one. The center carrier is used as the measurement carrier.

In the present invention, the measurement of the neighboring cell by using only the measurement carrier and the measurement of the neighboring cell by using the measurement carrier and the auxiliary carrier are two measurement modes for realizing the cell measurement in the multi-carrier system, and the system can be based on the mobile terminal (hereinafter referred to as the terminal). Configured in different environments. Generally, a terminal with a bad communication environment usually adopts the second mode.

Specifically, only the measurement carrier is used to complete the mode of the neighbor cell measurement, as shown in FIG. 2, including the following steps:

Step 201: The system selects some carriers in the cell as the measurement according to the carrier spectrum of the cell. Quantity carrier.

Here, the system refers to a network side, and may be an entity such as a Node B, a gateway, a core network, or the like. Selecting the measurement carrier is to select a part of the carriers that can represent the large-scale fading of the cell as the measurement carrier of the cell, and the selection principle is: continuous in the spectrum; or, the spectrum interval between the carriers is small, less than a certain At the threshold value, one or more carriers may be selected from the carrier group as measurement carriers. The threshold value can be set according to the actual environment. For example, for the 500M frequency band, the carrier interval threshold can be set to 1M. For the 1G frequency band, the carrier interval threshold can be set to 10M and so on.

The so-called spectrum continuation is to select one or more carriers from consecutive spectrum carriers in different frequency bands as representative of measurement carriers. For example: 500M, 1G, 1.5G, 2G, 2.5G, 3G have frequency-continuous carriers on each frequency band. Then one or more carriers are selected from each frequency band as measurement carriers. The so-called small spectral spacing between two carriers means that the spectral spacing is satisfied: the large-scale fading of the two carriers is the same, and whether the two conditions are met can be obtained through simulation and experimental measurements.

Step 202: The system measures carrier information according to the cell measurement of each neighboring cell of the cell to which the terminal belongs, and configures a neighbor cell measurement carrier list of the current cell.

Here, one neighboring cell may correspond to one or more measurement carriers, where the neighboring cell measurement carrier list stores neighbor cell information of a cell to which the terminal currently belongs, including a cell ID, a center frequency of the corresponding cell, and a measurement carrier corresponding to the corresponding cell. . The neighbor cell measurement carrier list can be configured during network construction or configured when needed.

In this step, the neighboring cell is configured to measure the carrier list in two ways: First, the terminal measures the current cell carrier, and reports the current cell base station, and the cell configures the measurement carrier of the cell, and each cell exchanges information through the base station. The measurement carrier, the local cell obtains the measurement carrier corresponding to each neighboring cell, and configures the neighbor cell measurement carrier list of the current cell; the other is, the current cell according to the measurement result obtained by the terminal to the measurement of each neighboring cell carrier, and according to the measurement result The principle that the large-scale fading is the same or similar selects the measurement carrier of the neighboring cell, and configures the neighbor cell measurement carrier list of the current cell. After the terminal reports the information to the base station, the terminal may not configure the neighbor cell measurement carrier list by the base station, and each base station reports its own jurisdiction cell and its measurement carrier to the network side, as reported above, and configures each cell by the network side. The neighboring cell measures the carrier list, and then sends it to the terminal through the base station. Step 203: When the terminal performs cell measurement, according to the configured neighbor cell measurement carrier list, the measurement carriers of the neighboring cell are sequentially measured, and the neighbor cell measurement is completed.

Here, the neighbor cell measurement carrier list is placed in the broadcast information of the current cell measurement carrier and sent to the terminal.

The mode of performing neighbor cell measurement by using the measurement carrier and the auxiliary carrier, as shown in FIG. 3, includes the following steps:

Step 301: The system selects a part of carriers in the cell as the measurement carrier according to the carrier spectrum of the cell.

Here, the principle and manner of selecting a measurement carrier are the same as in step 201. In this step, the carrier that is not selected as the cell measurement carrier is defined as the auxiliary carrier of the corresponding measurement carrier of the cell. For example, among the three consecutive carriers, the center carrier is selected as the measurement carrier, and the other two carriers are corresponding to the measurement carrier. Auxiliary carrier.

Step 302: The system measures carrier information according to the cell measurement of each neighboring cell of the cell to which the terminal belongs, and configures a neighbor cell measurement carrier list of the current cell.

Here, how to configure the neighbor cell measurement carrier list is the same as described in step 202.

Step 303: The system configures the auxiliary carrier information of the measurement carrier in the broadcast information of the measurement carrier of the current cell.

Here, the configuration is actually adding a parameter, or a field, or a field for placing the auxiliary carrier information in the broadcast information of the measurement carrier, and then filling the auxiliary carrier information corresponding to each measurement carrier into a corresponding parameter or field in the respective broadcast information. , or domain.

In practical applications, the information of the corresponding measurement carrier may also be configured in the broadcast information of the secondary carrier.

Step 304: When the terminal performs cell measurement, according to the configured neighbor cell measurement carrier list, the measurement carrier of the neighboring cell is sequentially measured.

Steps 305 ~ 306: Determine whether there is a carrier suitable for the terminal operation in the measurement result, and if yes, end the current processing flow; otherwise, the system commands the terminal to measure or the terminal self-measures the auxiliary carrier corresponding to the measurement carrier with better measurement result. The specific method is: the terminal acquires the auxiliary carrier information from the broadcast information of the corresponding cell measurement carrier, performs measurement on the corresponding auxiliary carrier, and completes all the carriers in the neighboring cell. Wave measurement.

The cell measurement method of the present invention can be used for a process of cell measurement, such as cell handover, or cell reselection. The implementation of the method of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1:

In this embodiment, only the measurement carrier of the neighboring cell is measured. As shown in FIG. 4, the process of cell measurement and cell selection in this embodiment includes:

Step 401: The system configures a measurement carrier of the current cell according to the frequency information of the carrier, and establishes a neighbor cell measurement carrier list according to the measurement carrier configuration of each neighboring cell of the current cell.

Here, the measuring carrier of the current cell is configured according to the carrier spectrum of the current cell, and part of the carrier is selected as the measurement carrier, and the selection principle is: continuous in the spectrum; or the spectrum interval between the carriers is less than a threshold. , one or more carriers are selected from the carrier group as measurement carriers.

The network side performs configuration of the neighbor cell measurement carrier list according to the location of a certain cell. In the configuration process, the network side is configured according to the measurement carrier configuration of the neighboring cell. When one neighboring cell has multiple measurement carriers, in the neighboring cell measurement carrier list, the multiple measurement carriers all correspond to the associated cell.

Step 402: When the terminal needs to measure the neighboring cell, according to the neighboring cell configuration of the current cell, according to the neighboring cell measurement carrier list in the broadcast information, the measurement carrier of the neighboring cell is measured in turn; after the measurement is completed, the terminal reports the measurement result, or the terminal does not report The measurement results themselves select the cell based on the measurement result.

When the terminal is in the connected state, the terminal reports the downlink channel quality. When the system determines that the channel quality meets the condition of the neighbor cell measurement, the system sends the neighbor cell measurement command and gives the terminal time indication of the neighbor cell. After receiving the cell measurement command, the terminal reads the carrier information to be measured from the neighbor cell measurement carrier list in the broadcast information, where the information includes the frequency location information of the measurement carrier, etc., in the neighboring cell measurement time interval configured by the system. The terminal measures the measurement carrier of the neighboring cell.

Here, there are several methods for the terminal to report the measurement results:

A) Optimal reporting, ie: when the terminal measures multiple measurement carriers, only the channel quality is reported. The best measurement information of one or more measurement carriers;

B) The threshold value is 4艮, that is: after the terminal measures a plurality of measurement carriers, when the channel quality of the measurement carrier reaches or exceeds a preset threshold value, the measurement information of the measurement carrier larger than the threshold value is reported; Here, the threshold is set according to actual needs;

C) All reports, ie: The terminal measures the measurement carrier of the neighboring cell, and all the measurement information of all measured measurement carriers are measured to the system, which is determined by the system.

Step 403: Select an appropriate cell according to the measurement result of the neighboring cell to the neighboring cell.

Here, according to the current state of the terminal, there are two ways to select a cell: When the terminal is in the connected state, the terminal reports the measurement result of the neighboring cell to the system, and the system selects the appropriate neighboring cell according to the measurement result reported by the terminal. And instruct the terminal to perform cell switching or reselection.

When the terminal is in an idle state in a certain cell, the terminal determines the channel quality of the cell according to the RSRP. If it is determined that the channel quality is poor, and the neighbor cell measurement requirement is reached, the terminal starts to measure the neighbor in the carrier list according to the neighbor cell. The cell measures the carrier information, and measures the neighboring cells in turn, and then the terminal directly selects a cell with better or better signal quality according to the measurement result to camp.

Embodiment 2:

In this embodiment, the neighboring cell measurement is performed by using the measurement carrier and the auxiliary carrier. As shown in FIG. 5, the process of cell measurement and cell selection in this embodiment includes:

Step 501: The system configures the measurement carrier of the current cell according to the frequency information of the carrier, and establishes a neighbor cell measurement carrier list according to the measurement carrier configuration of each neighboring cell of the current cell.

Here, the measuring carrier of the current cell is configured according to the carrier frequency condition of the current cell, and part of the carrier in the cell is selected as the measurement carrier, and the selection principle is: continuous on the frequency borrowing; or the spectrum interval between the carriers is less than one gate Limit, select one or more carriers from this carrier group as the measurement carrier.

The network side performs configuration of the neighbor cell measurement carrier list according to the location of a certain cell. In the configuration process, the network side is configured according to the measurement carrier configuration of the neighboring cell. When one neighboring cell has multiple measurement carriers, in the neighboring cell measurement carrier list, the multiple measurement carriers all correspond to the cell to which the cell belongs. Step 502: The system configures the auxiliary carrier information corresponding to the measurement carrier in the broadcast information of the current cell measurement carrier.

In the carrier configuration, each measurement carrier has corresponding broadcast information, and the broadcast information includes the spectrum and carrier information of the current cell. The spectrum carrier information in the cell broadcast information can be implemented in the following ways:

a) all measurement carrier information of the cell, including frequency position information and bandwidth size information, is configured on the measurement carrier of the cell, and each of the measurement carriers is configured with the respective auxiliary carrier information; and the corresponding measurement carrier information can be configured on the auxiliary carrier. You can also configure each auxiliary carrier information corresponding to the measurement carrier.

b) The measurement carrier of the cell configures all the carrier information of the cell, and specifically indicates the auxiliary carrier information of the measurement carrier; and the auxiliary carrier can configure the corresponding measurement carrier information, and can also configure each auxiliary carrier information corresponding to the measurement carrier.

c) All carrier information of the cell is configured on all carriers of the cell, and the measurement carrier of the cell is indicated. Step 503: When the terminal needs to measure the neighboring cell, according to the neighboring cell configuration of the current cell, according to the neighboring cell measurement carrier list in the broadcast information, the measurement carrier of the neighboring cell is measured in turn; after the measurement is completed, the terminal reports the measurement result, or the terminal does not report The measurement results themselves select the cell based on the measurement result.

A) optimal reporting, that is: when the terminal measures multiple measurement carriers, only the measurement information of one or more measurement carriers with the best channel quality is reported;

B) The threshold value is 4艮, that is: after the terminal measures multiple measurement carriers, when the channel quality of the measurement carrier reaches or exceeds a preset threshold, the measurement signal of the measurement carrier that is greater than the threshold is reported. Here; the threshold is set according to actual needs;

Steps 504 to 506: determining whether the cell can be selected according to the measurement result of the measurement carrier, and if yes, directly selecting an appropriate cell; otherwise, measuring the auxiliary carrier corresponding to the measurement carrier with good measurement result, and then The measurement result of the carrier selects a suitable cell.

Here, according to the current state of the terminal, there are two ways to select a cell: When the terminal is in the connected state, the terminal reports the measurement result of the neighboring cell to the system, and the system selects the appropriate neighboring cell according to the measurement result reported by the terminal. And instruct the terminal to perform cell switching or reselection. If the terminal measures all measurement carriers of all neighboring cells, does not satisfy the neighboring cell carrier of the selectable condition, or when the channel quality parameters of several measurement carriers are close to the selection threshold, the system can command the terminal to re-measure the measurement result. The measured carrier corresponds to the attached carrier. The terminal measures the corresponding auxiliary carrier according to the auxiliary carrier information on the measurement carrier, and then selects an appropriate cell according to the measurement result of the secondary carrier reported by the terminal.

When the terminal is in an idle state in a certain cell, the terminal determines the channel quality of the cell according to the RSRP. If it is determined that the channel quality is poor, and the neighbor cell measurement requirement is reached, the terminal starts to measure the neighbor in the carrier list according to the neighbor cell. The cell measures carrier information and measures neighbor cells in turn. If the terminal measures all measurement carriers of all neighboring cells, does not satisfy the neighboring cell carrier of the selectable condition, or when the channel quality parameter of several measured carriers approaches the selection threshold, the terminal remeasures the measurement carrier with better measurement result. Corresponding auxiliary carrier. The terminal measures the corresponding auxiliary carrier according to the auxiliary carrier information on the measurement carrier, and then the terminal selects a cell with better or better signal quality to perform camping according to the measurement result of the auxiliary carrier.

To implement the foregoing cell measurement method, the present invention further provides a cell measurement apparatus for use in a multi-carrier system. As shown in FIG. 6, the method includes a carrier configuration module 61, a carrier list configuration module 62, and a carrier measurement module 63. The configuration module 61, the carrier list configuration module 62, and the carrier measurement module 63 are generally located on the terminal side;

The carrier configuration module 61 is configured to select a part of the cells in the cell as the measurement carrier according to the carrier spectrum of the cell, where the selected measurement carrier is a generation selected from all carriers of the cell. Part of the carrier of the large-scale fading of the table cell;

The carrier list configuration module 62 is configured to configure, according to the cell measurement carrier information of each neighboring cell of the current cell, the neighbor cell measurement carrier list of the current cell, where one neighbor cell can correspond to one or more measurement carriers;

The carrier measurement module 63 is configured to measure the carrier list according to the configured neighboring cell, and sequentially measure the measured carriers of the neighboring cells to obtain a measurement result.

The carrier configuration module 61 may be further configured to configure the auxiliary carrier information of the measurement carrier in the broadcast information of the measurement carrier of the current cell. Correspondingly, the carrier measurement module 63 is further configured to: After there is no carrier suitable for the working of the terminal in the carrier, the auxiliary carrier corresponding to the measured carrier is measured.

As shown in FIG. 6, the apparatus may further include: a cell selection module 64 located at the terminal side, configured to select a suitable cell according to the measurement result, where the measurement result may be a measurement result of the measurement carrier, or may be a measurement carrier. Measurement results combined with the auxiliary carrier.

As shown in FIG. 7, the device further includes: an upper module 65 on the terminal side, configured to report the measurement result of the terminal to the system; and correspondingly, the device further includes a cell selection module 64' located on the system side, according to The measurement result reported by the terminal selects a suitable cell; where the measurement result may be a measurement result of the measurement carrier, or may be a measurement result of combining the measurement carrier and the auxiliary carrier, where the system may be the base station Node B, the gateway, Entities such as the core network.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim

A cell measurement method in a multi-carrier system, where the multi-carrier is a plurality of working frequency points in a cell, the method includes:

Configuring a measurement carrier of a cell, and establishing a neighbor cell measurement carrier list according to the measurement carrier configuration of each neighboring cell of the cell;

When cell measurement is required, the terminal measures the measurement carrier of the neighbor cell according to the established neighbor cell measurement carrier list, and completes the neighbor cell measurement.

2. The cell measurement method according to claim 1, wherein before measuring the measurement carrier of the neighboring cell, the method further comprises: the system adding a parameter, or a field for placing the auxiliary carrier information, in the broadcast information of all the cell measurement carriers. Or the domain mode, configured with the auxiliary carrier information corresponding to the measurement carrier;

Correspondingly, after the measurement of the measurement carrier of the neighboring cell is completed, the method further includes: determining whether there is a carrier suitable for the terminal operation in the measurement result, and if yes, ending the current processing flow; otherwise, the system commands the terminal measurement or the terminal self-measurement The measurement result is better to measure the auxiliary carrier corresponding to the carrier.

The cell measurement method according to claim 2, wherein the determining measurement result is completed by the terminal itself; or

After the measurement of the measurement carrier of the neighboring cell is completed, the method further includes: the terminal measuring the result to the system; the determining the measurement result is completed by the system.

The cell measurement method according to any one of claims 1 to 3, wherein the step of configuring a measurement carrier of a cell comprises:

According to the carrier spectrum of the cell, a part of the carriers that can represent the large-scale fading of the cell is selected from all the carriers of the cell as the measurement carrier of the cell.

The cell measurement method according to claim 4, wherein the step of selecting, as the measurement carrier of the cell, the partial carrier capable of representing the large-scale fading of the cell among all the carriers of the cell includes:

Selecting one or more carriers from the carrier group with continuous spectrum as the measurement carrier of the cell; or

Select one or more carriers from the same carrier group with large-scale fading between carriers as a cell Measuring carrier.

The cell measurement method according to any one of claims 1 to 3, wherein the step of establishing a neighbor cell measurement carrier list comprises:

The terminal measures the current cell carrier, reports the base station of the cell, and configures the measurement carrier of the cell in the cell. The cells exchange the respective measurement carriers through the information of the base station, and the cell obtains the measurement carrier corresponding to each neighboring cell, and configures the neighboring cell of the current cell. Measuring the carrier list; or,

The current cell selects the measurement carrier obtained by measuring the neighboring cell carrier according to the measurement result of the terminal, and selects the measurement carrier of the neighboring cell according to the principle that the measurement result has the same or similar large-scale fading, and configures the neighbor cell measurement carrier list of the current cell;

The one neighboring cell corresponds to one or more measurement carriers.

7. A cell measurement apparatus in a multi-carrier system, the apparatus comprising: a carrier configuration module, a carrier list configuration module, and a carrier measurement module, wherein

The carrier configuration module is configured to select a part of carriers in a cell as a measurement carrier;

The carrier list configuration module is configured to configure, according to cell measurement carrier information of each neighboring cell, a neighbor cell measurement carrier list; and

The carrier measurement module is configured to measure a carrier list according to the configured neighboring cell, and sequentially measure the measured carriers of the neighboring cell to obtain a measurement result.

The cell measurement device according to claim 7, wherein the carrier configuration module is further configured to: configure, in the broadcast information of the measurement carrier of the current cell, the auxiliary carrier information of the measurement carrier;

Correspondingly, the carrier measurement module is further configured to: when there is no carrier suitable for the terminal in all the measurement carriers, measure the auxiliary carrier corresponding to the measurement carrier with a better measurement result.

The cell measurement device according to claim 7 or 8, wherein the device further comprises a cell selection module, configured to select a suitable cell according to the measurement result; and the cell selection module is located on the terminal side.

The cell measurement device according to claim 7 or 8, wherein the device further comprises a reporting module, configured to report the measurement result of the terminal to the system;

Correspondingly, the device further includes a cell selection module on the system side, configured to select a suitable cell according to the measurement result reported by the terminal.