CN104967505A - Wireless communication method, apparatus and terminal - Google Patents

Abstract

The invention provides a wireless communication method, an apparatus and a terminal. when secondary member carriers are configured for a terminal, a second channel quality parameter is selected from sector channel quality parameters pre-obtained by the terminal through measurement, wherein the second channel quality parameter is the maximum in the channel quality parameters which conform to a preset secondary member carrier adding rule, in the first type of channel quality parameters, the first type of channel quality parameters correspond to a first channel quality parameter and are the channel quality parameters of all sectors of a first base station on the carriers of the terminal except for the main member carriers of the terminal, and the first channel quality parameter is the maximum in all the channel quality parameters obtained by the terminal through the measurement; and a second carrier corresponding to the second channel quality parameter is configured as the secondary member carrier of the terminal. According to the invention, a user can use carriers appropriately, thus the system throughput is improved, and the dispatching complexity is reduced.

Description

Wireless communication method, device and terminal

This application is a divisional application of an application titled "A Method and Device for Configuring Component Carriers of Terminals in a Carrier Aggregation System" (application number: 201010174068.3; filing date: May 04, 2010).

technical field

The present invention relates to the technical field of carrier aggregation, in particular to a method for configuring a component carrier (CC, Component Carrier) of a terminal in a carrier aggregation system and a base station.

Background technique

As an important organization in the field of mobile communication, the 3rd Generation Partnership Project (3GPP) has greatly promoted the standardization of the third generation mobile communication technology (The Third Generation, 3G), and formulated a series of standards including wideband code division Communication system specifications including WideCode Division Multiple Access (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), etc. In order to meet the challenges of broadband access technology and meet the growing demands of new services, 3GPP launched the standardization of 3G Long Term Evolution (LTE) technology at the end of 2004, hoping to further improve spectrum efficiency and improve cell edge user performance, reduce system delay, and provide higher-speed access services for high-speed mobile users. In June 2008, 3GPP completed the LTE-A technical requirements report and proposed the minimum requirements for LTE-A: the peak downlink rate is 1Gbps, the peak uplink rate is 500Mbps, and the peak spectrum utilization rate for uplink and downlink reaches 15Mbps/Hz and 30Mbps/Hz respectively. Hz. These parameters are already far higher than the minimum technical requirements of the ITU, and have obvious advantages.

LTE-A supports continuous carrier aggregation and non-continuous carrier aggregation within and between frequency bands, and the maximum aggregated bandwidth can reach 100MHz. LTE-A aggregates several component frequency resources distributed in different frequency bands to form a large system bandwidth resource that LTE-A can use.

Considering LTE-A's requirements for new spectrum, operators will inevitably consider introducing new frequency bands and radio frequency links while considering backward compatibility. And because these new radio frequency links are independent from the existing radio frequency links, operators will have greater flexibility when deploying networks. As shown in Figure 1, the white oval in Figure 1 represents an existing sector, assuming that its component carrier belongs to the CC1 layer (layer), and the ellipse filled with oblique lines represents a newly introduced sector, assuming that its component carrier belongs to CC2 layer. When the frequency of the new sector introduced is different from that of the existing sector, the operator can rotate the corresponding antenna according to the environmental needs to compensate the sector boundary of the original network, so as to obtain better throughput and network cover. In a carrier aggregation system, a joint scheduling method is adopted for terminals among multiple component carriers, and ideal system performance can usually be obtained.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method and device for configuring a component carrier of a terminal in a carrier aggregation system, so as to configure the component carrier of the terminal and improve the throughput of the carrier aggregation system.

In order to solve the above technical problems, the embodiments of the present invention provide the following solutions:

A method for configuring component carriers of a terminal in a carrier aggregation system, comprising:

Acquiring the channel quality parameters of each sector of each base station on each carrier measured by the terminal;

Selecting a second channel quality parameter from the channel quality parameters measured by the terminal, wherein the second channel quality parameter is one of the channel quality parameters in the first type of channel quality parameters that conform to a predetermined secondary component carrier addition rule The channel quality parameter of the first type is the channel quality parameter of all sectors of the first base station on carriers other than the primary component carrier of the terminal corresponding to the first channel quality parameter, and the first channel The quality parameter is the maximum of all channel quality parameters measured by the terminal;

Configuring a second carrier corresponding to the second channel quality parameter as a secondary component carrier of the terminal.

Preferably, in the above method,

The selecting a second channel quality parameter from the channel quality parameters measured by the terminal includes:

From the channel quality parameters of all sectors of the first base station on carriers other than the primary component carrier of the terminal, select a channel quality parameter candidate set that meets a predetermined secondary component carrier addition rule;

Selecting a second channel quality parameter with the largest channel quality parameter from the channel quality parameter candidate set.

Preferably, in the above method,

The selecting a second channel quality parameter from the channel quality parameters measured by the terminal includes:

From the channel quality parameters of all sectors of all base stations on carriers other than the primary component carrier, select a channel quality parameter candidate set that meets a predetermined secondary component carrier addition rule;

Judging whether the largest channel quality parameter in the channel quality parameter candidate set corresponds to the first base station: if yes, use the largest channel quality parameter in the channel quality parameter candidate set as the second channel quality parameter; otherwise , to end the process.

Preferably, in the above method,

After the second channel quality parameter is selected, it is further judged whether the second channel quality parameter is the maximum among the channel quality parameters of all sectors of all base stations on carriers other than the primary component carrier: if , enter the step of configuring the second carrier corresponding to the second channel quality parameter as the secondary component carrier of the terminal; otherwise, end the process.

Preferably, in the above-mentioned method, also include:

Selecting the largest first channel quality parameter from all channel quality parameters measured by the terminal;

Configuring the first carrier corresponding to the first channel quality parameter as the primary component carrier of the terminal.

Preferably, in the above-mentioned method, also include:

Recording the correspondence between the second sector corresponding to the second channel quality parameter and the secondary component carrier;

When the second sector meets a predetermined secondary component carrier deletion rule, delete the secondary component carrier corresponding to the second sector.

Preferably, in the above method,

The rules for adding the secondary component carrier include:

The signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold;

Or, the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

Or, the signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold, and the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

The secondary component carrier deletion rules include:

The signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold;

Or, the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold;

Or, the signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold, and the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold.

An embodiment of the present invention also provides a device for configuring a component carrier of a terminal in a carrier aggregation system, which is characterized in that it includes:

A parameter obtaining unit, configured to obtain the channel quality parameters of all sectors of all base stations on each carrier measured by the terminal;

A selection unit, configured to select a second channel quality parameter from the channel quality parameters measured by the terminal, wherein the second channel quality parameter is one of the first type of channel quality parameters that meets a predetermined secondary component carrier addition rule The largest of the channel quality parameters of the first type of channel quality parameter is the channel quality parameter of all sectors of the first base station corresponding to the first channel quality parameter on carriers other than the primary component carrier of the terminal, The first channel quality parameter is the maximum of all channel quality parameters measured by the terminal;

A secondary component carrier adding unit, configured to configure a second carrier corresponding to the second channel quality parameter as a secondary component carrier of the terminal.

Preferably, in the above device,

The selection unit is further configured to select, from the channel quality parameters of all sectors of the first base station on carriers other than the primary component carrier of the terminal, the channel quality that meets the predetermined secondary component carrier addition rule A parameter candidate set; and, selecting a second channel quality parameter with the largest channel quality parameter from the channel quality parameter candidate set.

Preferably, in the above device,

The selection unit is further configured to select a channel quality parameter candidate set that meets a predetermined secondary component carrier addition rule from channel quality parameters of all sectors of all base stations on carriers other than the primary component carrier; and , judging whether the largest channel quality parameter in the channel quality parameter candidate set corresponds to the first base station: if yes, using the largest channel quality parameter in the channel quality parameter candidate set as the second channel quality parameter.

Preferably, the above device further includes a judging unit;

The selecting unit is further configured to trigger the judging unit after the second channel quality parameter is selected;

The judging unit is configured to judge whether the second channel quality parameter is the largest among the channel quality parameters of all sectors of all base stations on carriers other than the primary component carrier: if yes, trigger the secondary The component carrier adding unit configures the second carrier corresponding to the second channel quality parameter as the secondary component carrier of the terminal; otherwise, the secondary component carrier adding unit is not triggered.

Preferably, the above-mentioned device also includes;

The primary component carrier configuration unit is configured to select the largest first channel quality parameter from all the channel quality parameters measured by the terminal; configure the first carrier corresponding to the first channel quality parameter as the The primary component carrier of the terminal.

Preferably, the above-mentioned device also includes;

a recording unit, configured to record the correspondence between the second sector corresponding to the second channel quality parameter and the secondary component carrier;

The secondary component carrier deletion unit is configured to delete the secondary component carrier corresponding to the second sector when the second sector meets a predetermined secondary component carrier deletion rule.

Preferably, in the above device,

The rules for adding the secondary component carrier include:

The signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold;

Or, the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

Or, the signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold, and the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

The secondary component carrier deletion rules include:

The signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold;

Or, the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold;

Or, the signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold, and the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold.

It can be seen from the above that the method and device for configuring the component carrier of the terminal in the carrier aggregation system provided by the present invention, when configuring the secondary component carrier for the terminal, select the carrier that belongs to the same base station as the primary component carrier as the carrier of the terminal and, according to the channel quality parameters of the sector reported by the terminal, the embodiment of the present invention can delete the secondary component carriers that do not meet the predetermined rules in time, so that the user can use the appropriate carrier to improve the system throughput and reduce the Beneficial effects of scheduling complexity.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario of a carrier aggregation system in the prior art;

Fig. 2 is the simulation result of the resource usage rate of CC1 of the system shown in Fig. 1;

FIG. 3 is a schematic flowchart of a method for configuring a component carrier of a terminal according to an embodiment of the present invention;

FIG. 4 is an exploded view of the carrier aggregation system in FIG. 1;

FIG. 5 is a flowchart of an implementation manner of configuring a component carrier of a terminal according to an embodiment of the present invention;

FIG. 6 is a flow chart of another implementation manner of configuring a component carrier of a terminal according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an apparatus for configuring a component carrier of a terminal according to an embodiment of the present invention;

FIG. 8 is a simulation result of carrier aggregation system throughput before and after adopting the method for configuring component carriers of a terminal according to an embodiment of the present invention.

Detailed ways

By simulating the wireless resource utilization rate under the joint scheduling of CC1 and CC2 in the carrier aggregation system shown in Figure 1, we obtain the cumulative distribution function (CDF) curve of the wireless resource utilization rate of CC1 as shown in Figure 2 The simulation results of Fig. It can be seen from FIG. 2 that about 35% of terminals (UE) only use CC1 for communication, about 35% of terminals only use CC2 for communication, and about 30% of terminals use CC1 and CC2 for communication. It can be seen that about 70% of terminals will only use one component carrier for communication. In this case, independent scheduling is only required on one component carrier for these terminals, and these terminals only need to be connected to one carrier without Necessary to connect to both carriers. If both independent scheduling of a single carrier and joint scheduling between carriers are used in the carrier aggregation system, it is necessary to properly configure the component carriers of the terminal at the base station so that they can be scheduled on the appropriate carrier. In order to enable the carrier aggregation system to obtain ideal system performance.

The present invention proposes a method for configuring component carriers of a terminal in a carrier aggregation system. The component carriers are configured for the terminal, so that the terminal can be scheduled on an appropriate carrier, so as to improve the throughput of the carrier aggregation system. According to the relevant standards of 3GPP, the component carriers of the terminal specifically include a primary component carrier (PCC, Primary Component Carrier) and a secondary component carrier (SCC, Secondary Component Carrier). The present invention configures the component carrier of the terminal through the following specific embodiments.

Please refer to FIG. 3, the method for configuring the component carrier of the terminal described in the embodiment of the present invention is applied to the network side of the carrier aggregation system, and specifically includes the following steps:

Step 31, the network side acquires the channel quality parameters of all sectors of all base stations on each carrier measured by the terminal.

In the carrier aggregation system, the channel quality parameter of a certain sector measured by the terminal is in one-to-one correspondence with a certain sector of a certain base station on a certain carrier, that is, a channel quality parameter uniquely corresponds to a base station, a carrier and a certain sector. a sector. Taking FIG. 1 as an example, the carrier aggregation system shown in FIG. 1 is decomposed on carriers and base stations, and the decomposition diagram shown in FIG. 4 is obtained. Figure 4 shows that base stations 1 to 3 perform carrier aggregation on carriers CC1 and CC2 respectively, and each base station has 3 sectors on each carrier, and the channel quality parameter refers to the channel quality of a certain sector measured by the terminal parameter.

Step 32: Select a second channel quality parameter from the channel quality parameters measured by the terminal, wherein the second channel quality parameter is a channel in the first type of channel quality parameter that meets the predetermined secondary component carrier addition rule The largest of the quality parameters, the first type of channel quality parameter is all sectors of the first base station corresponding to the first channel quality parameter measured by the terminal on other carriers other than the primary component carrier of the terminal A channel quality parameter, where the first channel quality parameter is the largest among all channel quality parameters measured by the terminal.

Here, the rule for adding the secondary component carrier can be set as required. For example, it can be set to:

(1) The signal-to-interference-plus-noise ratio (SINR) of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold. At this time, if the SINR of the sector corresponding to a certain channel quality parameter is greater than the predetermined first threshold, the channel quality parameter complies with the rule for adding the secondary component carrier.

(2) The difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold. At this time, if the difference between a certain channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold, the channel quality parameter complies with the rule for adding the secondary component carrier.

(3) The signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold, and the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold. In this case, it is the union of the above (1) and (2). If a certain channel quality parameter satisfies the above (1) and (2) at the same time, the channel quality parameter complies with the rule for adding secondary component carriers.

Of course, the user can also set other secondary component carrier addition rules by himself.

Step 33, configuring the second carrier corresponding to the second channel quality parameter as the secondary component carrier of the terminal.

In the above method, before step 32, it also includes: selecting the largest first channel quality parameter from all the channel quality parameters measured by the terminal; configuring the first carrier corresponding to the first channel quality parameter is the primary component carrier of the terminal.

In the above method, after step 33, it also includes: recording the correspondence between the second sector corresponding to the second channel quality parameter and the secondary component carrier; when the second sector complies with the predetermined secondary component carrier deletion rule, Delete the secondary component carrier corresponding to the second sector. Specifically, the secondary component carrier deletion rule includes: the signal-to-interference-plus-noise ratio of the second sector is smaller than a predetermined third threshold; or, the channel quality parameter of the second sector is different from the first channel quality The difference between the parameters is greater than a predetermined fourth threshold; or, the signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold, and the channel quality parameter of the second sector is different from the first channel quality parameter The difference is greater than the predetermined fourth threshold, and so on.

After determining or updating the primary and secondary component carriers of the terminal, the network side (such as the base station) notifies the terminal of the information of the primary and secondary component carriers of the terminal, and the terminal accesses the corresponding component carrier according to the information. When scheduling, the network side performs scheduling according to the primary and secondary component carriers of the terminal.

Through the above steps, when configuring the secondary component carrier for the terminal, the embodiment of the present invention selects the carrier that belongs to the same base station as the primary component carrier as the secondary component carrier of the terminal; and, the embodiment of the present invention can be based on the sector reported by the terminal The channel quality parameters can be used to delete secondary component carriers that do not meet the predetermined rules in time, so that scheduling can be performed based on appropriate component carriers, and the throughput of the carrier aggregation system can be improved.

The above channel quality parameter may specifically be a Reference Signal Received Power (RSRP, Reference Signal Received Power), and may also be a Reference Signal Received Quality (RSRQ, Reference Signal Received Quality) parameter.

Taking RSRP as an example below, the above method will be further described through two specific implementation manners. For RSRQ, its implementation is also the same.

<Embodiment 1>

Please refer to FIG. 5, the method for configuring the component carrier of the terminal described in this embodiment is applied to the network side of the carrier aggregation system, and specifically includes:

Step 51 , the terminal measures and obtains the RSRP of each sector of each base station on each carrier, and reports all the measured RSRPs to the network side.

Step 52: The network side selects the first RSRP with the largest value from all the RSRPs reported by the terminal, and configures the first carrier corresponding to the first RSRP as the primary component carrier of the terminal.

Step 53, the network side selects RSRPs of all sectors of all base stations on carriers other than the primary component carrier from all RSRPs measured by the terminal.

Here, in the above step 51, after the network side receives the RSRP of the component carrier reported by the terminal, if it is determined that the terminal is currently configured with a primary component carrier, it can directly enter the above step 53.

Step 54 , from the RSRPs selected in step 53 , select an RSRP candidate set that meets a predetermined rule for adding secondary component carriers.

Here, if the RSRP candidate set obtained in step 54 is empty, enter step 57 to end the procedure.

Step 55, selecting the RSRP with the largest value from the RSRP candidate set.

Step 56, judging whether the base station corresponding to the RSRP selected in step 55 is the first base station corresponding to the first RSRP, if so, proceed to step 58; otherwise, proceed to step 57.

Step 57, do not perform the action of adding the secondary component carrier, and end the process.

Step 58, configure the second carrier corresponding to the RSRP selected in step 55 as the secondary component carrier of the terminal and end the procedure.

The above process of this embodiment is described by taking the application scenario in FIG. 4 as an example. Figure 4 only includes two component carriers CC1 and CC2, and three base stations. Each ellipse represents a sector, and the value in the ellipse represents the RSRP of the sector measured by the terminal. According to the above process, the network side obtains the RSRP of each sector reported by the terminal. Among the RSRP of all sectors, the RSRP measured on sector 1 of base station 1 is 11, which is the largest value. Therefore, in this embodiment, the The carrier corresponding to the RSRP (that is, CC1) is configured as the primary component carrier of the terminal; then, from the RSRPs of all sectors on other component carriers other than the primary component carrier (CC1), select the one that meets the predetermined secondary component carrier addition rule The RSRP candidate set is to select the RSRP candidate set that satisfies the above rules from the RSRPs of all sectors on CC2. It is assumed that the RSRP component carriers of sector 5 of base station 2 and sector 5 of base station 3 all meet the above rules, that is, both is the RSRP candidate set; then select the RSRP with the largest RSRP from the RSRP candidate set, that is, the RSRP of sector 5 of base station 2; since the base station corresponding to the RSRP of sector 5 of base station 2 is base station 2, and the first RSRP corresponds to The base station is base station 1, and the two are different, so no action of adding a secondary component carrier is performed, and the process ends directly. So far, the network side configures the primary component carrier for the terminal, but does not configure any secondary component carrier.

<Embodiment 2>

Please refer to FIG. 6, the method for configuring the component carrier of the terminal described in this embodiment is applied on the network side of the carrier aggregation system, and specifically includes:

Step 61 , the terminal measures and obtains the RSRP of each sector of each base station on each carrier, and reports all the measured RSRPs to the network side.

Step 62: The network side selects the first RSRP with the largest value from all the RSRPs reported by the terminal, and configures the first carrier corresponding to the first RSRP as the primary component carrier of the terminal.

Step 63: From all RSRPs reported by the terminal, the network side selects the RSRPs of all sectors of the first base station on carriers other than the primary component carrier layer of the terminal, where the first base station refers to the first RSRP the corresponding base station.

Here, in the above step 61, after the network side receives all the RSRPs reported by the terminal, if it is determined that the terminal is currently configured with a primary component carrier, it can directly enter the above step 63.

Step 64: From the RSRPs of all sectors of the first base station on carriers other than the primary component carrier layer of the terminal measured by the terminal, select an RSRP candidate set that meets a predetermined secondary component carrier addition rule.

Here, in the above step 64, if the obtained RSRP candidate set is empty, the process ends directly.

Step 65: Select a second RSRP with the largest RSRP from the RSRP candidate set.

Step 66, configure the second carrier corresponding to the second RSRP as the secondary component carrier of the terminal and end the procedure.

Still taking the application scenario in FIG. 4 as an example to illustrate the above process of this embodiment. Similarly, according to the above process, the network side will still select the carrier corresponding to sector 1 of base station 1 as the main component carrier of the terminal, that is, the main component carrier is CC1, and the first base station is base station 1; From the RSRPs of all sectors on carriers other than CC1, select the RSRP candidate set that meets the predetermined secondary component carrier addition rules, that is, select the RSRPs that meet the above rules from the RSRPs of all sectors of base station 1 in CC2 Candidate set, assuming that the RSRPs corresponding to sector 5 and sector 6 of base station 1 satisfy the above rules, that is, they all belong to the RSRP candidate set; then select the RSRP with the largest RSRP from the RSRP candidate set, that is, the RSRP of sector 5 of base station 1 The RSRP is used as the second RSRP, and then the carrier CC2 corresponding to the second RSRP is configured as the secondary component carrier of the terminal. So far, the network side configures the primary component carrier and the secondary component carrier for the terminal.

The above two implementation manners illustrate the process of adding secondary component carriers in the present invention. For the same application scenario, the final results of the above two implementation manners may be different.

In Embodiment 2, after the second RSRP is selected in step 65, it may be further judged whether the second RSRP is all sectors of all base stations on other carriers other than the primary component carrier measured by the terminal. The largest of the RSRPs of the zone: if yes, enter the step 66 to configure the second carrier corresponding to the second RSRP as the secondary component carrier of the terminal; otherwise, do not perform any configuration of the secondary component carrier The action ends the process directly. Thus, the result of the second embodiment described above is the same as that of the first embodiment described above.

Based on the above method for configuring a component carrier of a terminal, an embodiment of the present invention also provides a device for configuring a component carrier of a terminal. The device is set on the network side of the carrier aggregation system. As shown in FIG. 7 , the device specifically includes:

A parameter obtaining unit, configured to obtain the channel quality parameters of all sectors of all base stations on each carrier measured by the terminal;

A selection unit, configured to select a second channel quality parameter from the channel quality parameters measured by the terminal, wherein the second channel quality parameter is one of the first type of channel quality parameters that meets a predetermined secondary component carrier addition rule The largest of the channel quality parameters of the first type of channel quality parameter is the channel quality parameter of all sectors of the first base station corresponding to the first channel quality parameter on carriers other than the primary component carrier of the terminal, The first channel quality parameter is the maximum of all channel quality parameters measured by the terminal;

A secondary component carrier adding unit, configured to configure the second carrier corresponding to the second channel quality parameter as the secondary component carrier of the terminal.

Preferably, the above-mentioned device also includes:

The primary component carrier configuration unit is configured to select the largest first channel quality parameter from all the channel quality parameters measured by the terminal; configure the first carrier corresponding to the first channel quality parameter as the the primary component carrier of the terminal;

a recording unit, configured to record the correspondence between the second sector corresponding to the second channel quality parameter and the secondary component carrier;

The secondary component carrier deletion unit is configured to delete the secondary component carrier corresponding to the second sector when the second sector meets a predetermined secondary component carrier deletion rule.

Corresponding to Embodiment 1 above, the selection unit is further configured to select, from the channel quality parameters of all sectors of all base stations on other carriers other than the primary component carrier measured by the terminal, the one that meets the predetermined criteria. adding a ruled channel quality parameter candidate set to the secondary component carrier; and, judging whether the largest channel quality parameter in the channel quality parameter candidate set corresponds to the first base station: if yes, adding the largest channel quality parameter in the channel quality parameter candidate set The channel quality parameter of is used as the second channel quality parameter.

Corresponding to the above-mentioned embodiment 2, the selecting unit is further configured to, among the channel quality parameters of all sectors of the first base station on other carriers other than the primary component carrier of the terminal measured by the terminal, Selecting a channel quality parameter candidate set conforming to a predetermined secondary component carrier addition rule; and selecting a second channel quality parameter with the largest channel quality parameter from the channel quality parameter candidate set.

As an embodiment, the above device further includes a judging unit;

The selecting unit is further configured to trigger the judging unit after the second channel quality parameter is selected;

The judging unit is configured to judge whether the second channel quality parameter is the largest among the channel quality parameters of all sectors of all base stations on carriers other than the primary component carrier measured by the terminal: if yes , the secondary component carrier adding unit is triggered to configure the second carrier corresponding to the second channel quality parameter as the secondary component carrier of the terminal; otherwise, the secondary component carrier adding unit is not triggered.

As a preferred embodiment, in the above device, the secondary component carrier addition rule includes:

The signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold;

Or, the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

Or, the signal-to-interference-plus-noise ratio of the sector corresponding to the channel quality parameter is greater than a predetermined first threshold, and the difference between the channel quality parameter and the first channel quality parameter is smaller than a predetermined second threshold;

The secondary component carrier deletion rules include:

The signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold;

Or, the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold;

Or, the signal-to-interference-plus-noise ratio of the second sector is less than a predetermined third threshold, and the difference between the channel quality parameter of the second sector and the first channel quality parameter is greater than a predetermined fourth threshold.

Finally, the beneficial effect of the embodiment of the present invention is described by simulating the throughput of the carrier aggregation system before and after adopting the above method of this embodiment.

Please refer to FIG. 8. Curve 3 is the empirical cumulative distribution function (empirical CDF) curve of the throughput of the carrier aggregation system that does not adopt the method described above in this embodiment. The empirical cumulative distribution function curve diagram of the throughput of the carrier aggregation system in the mode 2, in which the curve 1 and the curve 2 are close to coincident. Table 1 below is a comparison of the average throughput of the carrier aggregation system before and after adopting the above method in this embodiment.

Table 1

It can be seen that the average throughput of the carrier aggregation system is increased by about 21% after adopting the above method in this embodiment. Therefore, the embodiment of the present invention can improve the throughput of the carrier aggregation system and obtain good system performance.

The above is only the embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as Be the protection scope of the present invention.

Claims (13)

1. a wireless communications method, is applied to carrier aggregation system, and the feature of described wireless communications method is to comprise:

Base station obtains the channel quality parameter of each carrier wave measured in the terminal; And

Based on described channel quality parameter, select first carrier as main member carrier, select the second carrier wave as secondary member carrier,

The channel quality parameter of described each carrier wave comprises maximum parameter beyond maximum parameter i.e. the first channel quality parameter and described first channel quality parameter and second channel mass parameter.

2. wireless communications method as claimed in claim 1, is characterized in that,

Described base station obtains the channel quality parameter of described each carrier wave from network side.

3. wireless communications method as claimed in claim 1 or 2, is characterized in that,

Described first carrier corresponds to described first channel quality parameter.

4. wireless communications method as claimed in claim 1 or 2, is characterized in that,

Described second carrier wave corresponds to described second channel mass parameter.

5. wireless communications method as claimed in claim 1 or 2, is characterized in that,

The message notice of described main member carrier and described member carrier is given described terminal by described base station.

6. wireless communications method as claimed in claim 1 or 2, is characterized in that,

Described channel quality parameter is RSRP and Reference Signal Received Power or RSRQ and Reference Signal Received Quality.

7. a device, is characterized in that comprising:

Parameter acquiring unit, for obtaining the channel quality parameter of each carrier wave measured in the terminal;

Main member carrier selected cell, for based on described channel quality parameter, selects first carrier as main member carrier; And

Secondary member carrier selected cell, for based on described channel quality parameter, selects the second carrier wave as secondary member carrier,

The channel quality parameter of described each carrier wave comprises maximum parameter beyond maximum parameter i.e. the first channel quality parameter and described first channel quality parameter and second channel mass parameter.

8. device as claimed in claim 7, is characterized in that,

Described parameter acquiring unit obtains the channel quality parameter of described each carrier wave from network side.

9. device as claimed in claim 7 or 8, is characterized in that,

Described first carrier corresponds to described first channel quality parameter.

10. device as claimed in claim 7 or 8, is characterized in that,

Described second carrier wave corresponds to described second channel mass parameter.

11. devices as claimed in claim 7 or 8, is characterized in that,

Described channel quality parameter is RSRP and Reference Signal Received Power or RSRQ and Reference Signal Received Quality.

12. 1 kinds of terminals, is characterized in that comprising:

Measuring unit, for measuring the channel quality parameter of each carrier wave; And

Communication unit, for reporting the channel quality parameter of described each carrier wave,

Described communication unit by the first carrier selected as main member carrier based on described channel quality parameter and the second carrier wave selected as time member carrier, communicates in the network side,

The channel quality parameter of described each carrier wave comprises maximum parameter beyond maximum parameter i.e. the first channel quality parameter and described first channel quality parameter and second channel mass parameter.

13. terminals as claimed in claim 12, is characterized in that,

The first carrier that described communication unit is selected by utilizing the channel quality parameter of the described each carrier wave obtained from network side in the network side and the second carrier wave, communicate.