CN102427594A - Method, device and system for determining carrier according to service quality - Google Patents

Abstract

The embodiment of the invention discloses a method, a device and a system for determining a carrier according to service quality, which relate to the technical field of communication and can reasonably utilize carrier resources and improve the QoS of a user. The method of the invention comprises the following steps: the control node acquires the service quality QoS corresponding to the carrier participating in the carrier selection; and determining the carrier with the QoS not lower than the QoS of the carrier where the UE is located for the user equipment UE according to the QoS. The embodiment of the invention is mainly used in the process of determining the carrier by the user equipment in an idle state or a connection state.

Description

Method, device and system for determining carrier based on quality of service

technical field

The present invention relates to the field of communication technology, in particular to a method, device and system for determining a carrier according to Quality of Service (QoS).

Background technique

In a radio access network (Radio Access Network, RAN), radio frequencies are divided into different frequency bands, and different carriers are reserved in the frequency bands for use by specific operators. An operator thus owns one or more carriers for use by its communication system. In order to improve the throughput and QoS of the user equipment (User Equipment, UE), an appropriate carrier selection technology may be used to select a suitable carrier for the UE.

In the prior art, a radio network controller (Radio Network Controller, RNC) selects a carrier for the UE according to the load of the carrier. Specifically, for a UE in an idle state, cell selection/reselection parameters corresponding to each carrier in the RAN system may be calculated according to the load of the carrier. These cell selection/reselection parameters can be calculated by the base station and sent to the control node, or can be calculated by the control node itself. Then, the control node sends the cell selection/reselection parameters corresponding to the carrier to the UE camped on the carrier, so that the UE selects a carrier with a lower load according to the cell selection/reselection parameters. For a UE entering or in a connected state, it can be determined according to the load whether to redirect or switch the UE in the connected state. If the load of the carrier where the UE is located is too high, the UE can be handed over to another carrier.

In the process of implementing the above carrier selection, the inventors found at least the following problems in the prior art: because the carrier is selected for the UE only based on the load, the utilization of carrier resources is unreasonable and some resources are overcrowded.

Contents of the invention

Embodiments of the present invention provide a method, device and system for determining a carrier according to service quality, which can rationally utilize carrier resources.

In one aspect, a method for determining a carrier according to service quality is provided, including:

The control node obtains the service quality QoS corresponding to the carrier participating in the carrier selection;

Determine for the user equipment UE a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the quality of service QoS.

In another aspect, a method for determining a carrier according to service quality is provided, including:

The user equipment UE receives the configuration parameter sent by the control node, the configuration parameter is determined by the control node according to the QoS corresponding to the carrier participating in the carrier selection, so that the QoS of the UE is not lower than the QoS of the carrier where the UE is located. carry out business on the carrier;

The UE performs services on a carrier whose QoS is not lower than that of the carrier where the UE is located according to the configuration parameters.

In one aspect, a control node is provided, including:

An acquisition unit, configured to acquire the quality of service QoS corresponding to the carrier participating in the carrier selection;

A determining unit, configured to determine, for the user equipment UE, a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the QoS.

On the other hand, a user equipment UE is provided, including:

The receiving unit is configured to receive configuration parameters sent by the control node, the configuration parameters are determined by the control node according to the QoS corresponding to the carrier participating in carrier selection, so that the QoS of the UE is not lower than that of the carrier where the UE is located. Carry out business on the QoS carrier;

A determining unit, configured to, according to the configuration parameters, perform services on a carrier whose QoS is not lower than that of the carrier where the UE is located.

Also provided is a system for determining a carrier based on quality of service, comprising:

At least one above-mentioned control node and at least one above-mentioned user equipment UE.

The method, device and system for determining the carrier according to the quality of service provided by the embodiments of the present invention obtain the QoS of the carrier, and determine for the UE the carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the QoS. Compared with the method of selecting the carrier for the UE, it can comprehensively consider the resource allocation of the carrier to be selected, rationally use the carrier resource, and improve the user QoS.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flow chart of a method for determining a carrier according to service quality in an embodiment of the present invention;

FIG. 2 is a flow chart of another method for determining a carrier according to service quality in another embodiment of the present invention;

FIG. 3 is a flow chart of a method for determining a carrier according to service quality in another embodiment of the present invention;

FIG. 4 is a flow chart of another method for determining a carrier according to service quality in another embodiment of the present invention;

FIG. 5 is a schematic composition diagram of a control node in another embodiment of the present invention;

Fig. 6 is a schematic composition diagram of another control node in another embodiment of the present invention;

FIG. 7 is a schematic diagram of the composition of a user equipment UE in another embodiment of the present invention;

FIG. 8 is a schematic diagram of a system for determining a carrier according to service quality in another embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for determining a carrier according to service quality, which can be applied to a control node. As shown in FIG. 1, the method includes:

101. The control node acquires the QoS corresponding to the carrier participating in the carrier selection.

In this embodiment, the control node may be an RNC, or an eNodeB, or other control nodes for providing functions such as mobility management, call processing, link management, and handover mechanisms. For example, RAN provides multiple carriers, and each carrier corresponds to one or more cells. The load, number of users, and resource allocation of each carrier are different. Therefore, UE's carrier selection strategy is an important factor affecting user QoS. The control node can obtain the QoS of some or all carriers, compare or sort them, and determine for the UE a carrier whose QoS is not lower than that of the carrier where the UE is located.

Specifically, the control node may determine carriers participating in carrier selection according to the neighbor list, and obtain the QoS corresponding to each carrier in the neighbor list. The control node may also select only a carrier with a lower load as a carrier to participate in carrier selection according to the load condition, and obtain the QoS corresponding to the carrier with a lower load, where the carrier with a lower load here may refer to a carrier with a load lower than a preset The carrier of the load threshold, and the value of the preset load threshold can be set according to actual needs, which is not limited in this embodiment of the present invention. The control node may also use all the carriers under the control of the control node as carriers participating in carrier selection, and acquire the QoS corresponding to all the carriers under the control of the control node.

It should be noted that the quality of service QoS can be calculated by the base station and sent to the control node, or can be calculated by the control node itself, and an independent computing device can also be connected to calculate the QoS and send it to the control node. This is not limited.

102. Determine for the user equipment UE a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the quality of service QoS.

Wherein, according to the quality of service QoS, the method of determining for the user equipment UE a carrier whose QoS is not lower than that of the carrier where the UE is located may be, for example, as follows: for a UE in an idle state, the control node may modify the carrier according to the quality of service QoS Corresponding cell selection/reselection parameters, so that the UE can select a suitable carrier through the UE's own selection/reselection mechanism according to the cell selection/reselection parameters. The method of determining for the user equipment UE a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the quality of service QoS may also be: for a UE entering or in a connected state, the control node may determine whether to use the UE according to the quality of service QoS The UE that is entering or in the connected state in the carrier participating in the carrier selection is switched to another carrier with better QoS, so as to redirect or switch the UE in the connected state in the carrier participating in the carrier selection.

It should be noted that the carrier whose QoS determined according to the QoS is not lower than the QoS of the carrier where the UE is located may be the carrier where the UE is located, or a carrier other than the carrier where the UE is located whose QoS is not lower than the QoS of the carrier where the UE is located. . If the carrier whose QoS determined according to the QoS is not lower than the QoS of the carrier where the UE is located is the carrier where the UE is located, then services can continue to be performed on the carrier where the UE is located without switching to other carriers.

The embodiment of the present invention also provides a method for determining the carrier according to the quality of service, which can be applied to the UE. As shown in FIG. 2, the method includes:

201. A user equipment UE receives configuration parameters sent by a control node, so that the UE performs services on a carrier whose QoS is not lower than the QoS of the carrier where the UE is located.

Wherein, the configuration parameter may be a cell selection/reselection parameter determined by the control node according to the QoS corresponding to the carrier participating in the carrier selection, and is used to allow the UE to select a carrier whose QoS is not lower than the QoS of the carrier where the UE is located for service . The configuration parameter may also be a carrier switching instruction determined by the control node according to the QoS corresponding to the carrier participating in the carrier selection, and is used to make the UE switch to a carrier whose QoS is not lower than that of the carrier where the UE is located for service.

Wherein, when the user equipment UE is in an idle state, it receives the cell selection/reselection parameters modified according to QoS sent by the control node. When the user equipment UE enters or is in a connected state, it receives a carrier switching instruction sent by the control node according to QoS.

202. According to the configuration parameters, the UE performs services on a carrier whose QoS is not lower than that of the carrier where the UE is located.

Wherein, the method for the UE to perform services on a carrier whose QoS is not lower than that of the carrier where the UE is located according to the configuration parameters may be step 203 and/or step 204 . Step 203 is to perform carrier selection according to the modified cell selection/reselection parameters in the idle state; step 204 is to perform carrier switching for the UE in the connected state according to the instruction of the control node. The specific operation process is as follows:

203. Select an appropriate carrier according to the modified cell selection/reselection parameter.

Wherein, when the user equipment UE is in an idle state, it receives the modified cell selection/reselection parameter according to QoS sent by the control node, and selects an appropriate carrier according to the modified cell selection/reselection parameter.

In the wireless network system, the control node can continuously or periodically send system information including cell selection/reselection parameters to the UE. Before the cell selection/reselection parameters sent by the control node to the UE in the embodiment of the present invention, it can be based on QoS modifies the cell selection/reselection parameters. If the control node modifies the cell selection/reselection parameters, the UE receives the modified cell selection/reselection parameters. If the control node modifies the cell selection/reselection parameters Without modification, the original cell selection/reselection parameters are received. So that the UE selects a carrier with higher QoS according to the modified cell selection/reselection parameters.

It can be understood that if the modified cell selection/reselection parameters are received, carrier selection is performed according to the modified cell selection/reselection parameters when the cell selection/reselection mechanism is running. If unmodified cell selection/reselection parameters are received, carrier selection is performed according to the unmodified cell selection/reselection parameters when the cell selection/reselection mechanism is running. The cell selection/reselection parameters include related selection/reselection parameters of the carrier where the UE is located and related selection/reselection parameters of other adjacent carriers. The modified cell selection/reselection parameters can improve the QoS not lower than that of the carrier where the UE is located. The probability that the QoS carrier is selected can make the UE more inclined to select a carrier whose QoS is not lower than that of the carrier where the UE is located. The carrier where the UE is located can continue to perform services on the carrier where the UE is located without switching to other carriers.

In another implementation scenario of the embodiment of the present invention, in order to ensure a higher QoS for the UE in the connected state, when the UE enters or is in the connected state, the UE can select a QoS higher than The carrier of the carrier where the UE is located, the method may also include:

204. Access to the target carrier according to the identifier corresponding to the target carrier included in the carrier switching instruction, where the carrier switching instruction includes the identifier corresponding to the target carrier to be accessed by the user equipment UE.

Wherein, when the user equipment UE enters or is in the connected state, it receives the carrier switching instruction sent by the control node according to QoS, and accesses the target carrier according to the identifier corresponding to the target carrier included in the carrier switching instruction. The carrier switching instruction may be one of the following instructions: a redirection instruction, an inter-frequency switching instruction, a direct retry instruction, or an inter-system switching instruction. If the UE is entering the connected state, the control node can send a redirection instruction to the UE; if the UE is already in the connected state, the control node can send one of the inter-frequency handover instruction, direct retry instruction or inter-system handover instruction to the UE . It can be pre-set according to the actual situation that when the UE is already in the connected state, the control node sends any one of the three kinds of instructions: inter-frequency handover instruction, direct retry instruction or inter-system handover instruction to the UE. When receiving the redirection instruction, the UE performs redirection; when the inter-frequency handover instruction is received, the UE performs inter-frequency handover; when the direct retry instruction is received, the UE performs direct retry; when the inter-system handover instruction is issued, the UE performs inter-system switch. The identifier corresponding to the target carrier to be accessed by the user equipment UE may be included in the carrier switching instruction.

Wherein, the determination of the target carrier is that the UE selects a carrier whose QoS is not lower than that of the carrier where the UE is located. The method for determining the target carrier may be: sort the QoS corresponding to the carriers participating in the carrier selection, and select the carrier with the highest QoS as the target carrier, or select any carrier whose QoS is not lower than the carrier where the UE is located as the target carrier. The method for determining the target carrier may also be other sorting or comparison based on QoS and selecting a carrier with higher QoS as the target carrier, which is not limited in this embodiment of the present invention.

It can be understood that, in the embodiment of the present invention, the carrier determination method for the UE in the idle state and the carrier determination method for the UE in the connected state may be independent, that is to say, the carrier of the UE in the idle state may not be determined at the same time. The determination method and the carrier determination method of the UE in the connected state are limited.

The method for determining the carrier according to the quality of service QoS provided by the embodiment of the present invention obtains the QoS of the carrier participating in carrier selection, and determines for the UE the carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the QoS, and can comprehensively consider the resources of the carrier to be selected The allocation situation, rational use of carrier resources, and improve user QoS.

An embodiment of the present invention provides a method for determining a carrier according to the quality of service QoS, which can be applied to a control node. As shown in FIG. 3, the method may include:

301. Acquire the throughput rate of the connected user of the carrier participating in the carrier selection.

Wherein, the throughput rate of the connected users can be the maximum value of the throughput rate of the connected users, the minimum value of the throughput rate of the connected users, or the average value of the throughput rate of the connected users, or it can also be represented by other forms of throughput rate The form, the specific parameter form can be selected according to the actual situation, and is not limited in this embodiment of the present invention.

302. Acquire resource margins of carriers participating in carrier selection.

Wherein, the QoS corresponding to each carrier participating in the carrier selection can be obtained, and the carrier participating in the carrier selection can be each carrier in the neighbor cell list, or a carrier with a low load screened according to the load condition, or the All carriers under the control of the control node, etc. The resource margin includes at least one of the following margins: an uplink power resource margin, a downlink power resource margin, an uplink code resource margin, a downlink code resource margin, and a downlink channel element (Channel Element, CE) resource margin , uplink CE resource margin, Iub resource margin, throughput rate of users to be accessed, and the like. Among them, the Iub interface is a logical interface between RNC and NodeB, and completes user data transmission and user data between RNC and NodeB. It is a standard interface and allows interconnection of different manufacturers. It should be noted that the calculation of some or all of the parameters in the resource headroom can be independently completed by the control node, or can be completed by the base station and sent to the control node, and the control node directly obtains the resource headroom information.

For example, when acquiring the resource headroom corresponding to a carrier, only the downlink power resource headroom may be used as the resource headroom of the carrier. Multiple pieces of information may also be selected to calculate the resource headroom, for example, the resource headroom corresponding to the carrier is calculated by using the uplink power resource headroom and the downlink power resource headroom. Perform normalization processing on the uplink power resource headroom and downlink power resource headroom to obtain two values greater than 0 and less than 1, and add the two values obtained after normalization processing to obtain the resource headroom of the corresponding carrier . It can be understood that, the calculation method of the resource headroom can be selected according to the actual situation, and one or more weighted calculations in each headroom information of the carrier are selected to obtain the resource headroom of the carrier.

Specifically, the calculation method of the uplink power resource headroom can be one of the following, or weighted by two: the headroom of the received total wideband power (Received Total Wideband Power, RTWP) of the uplink bandwidth and the predetermined enhanced dedicated channel (Enhanced Dedicated CHannel, E- DCH) share received power (ReceivedScheduled E-DCH Power Share, RSEPS).

The calculation method of the downlink power resource headroom can be one or more of the following weights: the headroom of the downlink carrier transmit power (Transmitted Carrier Power, TCP), the headroom of the unused high-speed physical downlink shared channel (HS-PDSCH, High-Speed Physical Downlink Shared CHannel, HS-PDSCH), high-speed shared control channel (High-Speed Shared Control CHannel, HS-SCCH), absolute access channel (E-DCHabsolutegrant CHannel, E-AGCH), relative access channel (Relative GrantCHannel, E -RGCH) or Confirmation Indicator Channel (E-DCH HARQ Indicator CHannel, E-HICH) occupied carrier transmit power, carrier transmit power not occupied by high-speed transmission channel, or High-Speed Downlink Shared Channel (High-Speed Downlink Shared Channel) , HS-DSCH) required power.

The remaining amount of downlink code resources indicates downlink code resources that can be used after the user to be accessed accesses the current carrier.

The channel element (Channel Element, CE) resource headroom can be calculated by one of the following, or weighted by two: downlink CE resource headroom, uplink CE resource headroom.

The calculation method of the Iub resource margin may be one of the following, or the weighting of two: the uplink Iub resource margin and the downlink Iub resource margin.

The throughput rate of users to be accessed can be predicted according to the resource usage in the carrier, for example, it can be calculated according to the following formula:

Resource((min((P _total -P _R99 ), P _max )-∑GBP), code)

Among them, P _{tot al} represents the maximum downlink transmission power of the carrier, P _R99 represents the power occupied by the R ₉₉ service, GBP represents the HS-DSCH power required by one UE in the carrier, and ΣGBP represents the HS-DSCH power required by all UEs in the carrier Sum. Code represents HSDPA available code resources. Min indicates that the smaller one is selected among the two values, which is the remaining available power resource. Resource means querying the predefined prediction table according to the remaining available power resources and code resources of the cell to obtain the throughput rate of the user to be accessed. The throughput rate of users to be accessed calculated by the above calculation formula is a comprehensive representation of the radio resources available for dynamic scheduling of High Speed Downlink Packet Access (HSDPA) services. Its meaning is: when R ₉₉ and HSDPA variable rate (Guaranteed Bit Rate, GBR) resource requirements, the average expected maximum throughput of the cell is calculated according to the remaining available power resources and code resources of the carrier. The calculation formula is only used as an example for predicting the throughput rate of the user to be accessed, and other calculation formulas may also be selected, which is not limited in this embodiment of the present invention.

It should be noted that there is no necessary sequence relationship between steps 301 and 302, and the order can be reversed. And only one of step 301 or 302 may be performed, or both step 301 and step 302 may be performed.

303. Acquire the QoS corresponding to the carrier according to the throughput rate and/or resource margin of the accessed user.

Wherein, the QoS corresponding to the carrier may be represented by the weight of one or both of the throughput rate of the accessed user and the resource margin. The specific method of weighting can be set according to the actual situation. For example, the throughput rate and resource margin of the connected users are normalized to obtain two values greater than 0 and less than 1, and the two values obtained after the normalization process are Add up the values to get the QoS corresponding to the carrier. In addition, other weighting coefficients and processing methods can also be used to perform weighting processing on the throughput rate and resource margin of the accessed user, and the specific weighting method of the embodiment of the present invention is not limited in the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the QoS corresponding to the carrier can be obtained through the method of step 301-step 303, or the base station, such as NodeB, can calculate the QoS and send it to the control node, and the control node can directly receive the participating carrier sent by the base station QoS corresponding to each selected carrier. QoS acquisition methods include but are not limited to the above methods. During calculation, it is also possible to determine whether the user to be accessed has data transmission, and comprehensively consider the scheduling priority indicator (Scheduling Priority Indicator, SPI) weight and the weight of the user to be accessed in the cell. The SPI weight of the access user calculates the QoS, or the QoS may be obtained according to the load and the signal-to-noise ratio, which is not limited in this embodiment. For example, the QoS can be calculated by dividing the SPI weight of the user to be accessed by the SPI weight of all users, wherein the SPI weight of all users is the sum of the SPI weight of the user already connected and the SPI weight of the user to be connected. The result calculated according to the SPI weight of the accessed user may be directly used as the QoS, or may be further weighted with the throughput rate and/or resource margin of the accessed user to obtain the QoS.

It should be noted that after obtaining the QoS of the carrier, the cell selection/reselection parameters corresponding to the carrier can be modified according to the QoS of the service, and a carrier with higher QoS can be selected for the UE in the idle state; QoS redirects or switches the user equipment UE in the connected state in the carrier, and selects a carrier with higher QoS for the UE in the connected state; The UE selects a carrier with higher QoS. The following is a detailed description of the above two implementation methods for the UE to determine the QoS of the carrier whose QoS is not lower than the QoS of the carrier where the UE is located:

Further, in order to ensure that a higher QoS is provided to the UE in the idle state, after the control node acquires the QoS corresponding to the carrier, the method may further include:

304. Determine whether the quality of service QoS of the carrier participating in carrier selection exceeds the predetermined QoS range; if the service quality QoS of the carrier exceeds the predetermined QoS range, perform step 305; if the service quality QoS of the carrier does not exceed the predetermined QoS range, go to step 306.

Wherein, the method for judging whether the QoS of the carrier exceeds the predetermined QoS range may be: comparing the QoS of the carrier participating in the carrier selection with the predetermined upper limit and lower limit for absolute QoS difference. The predetermined QoS range may be the upper limit and lower limit of the pre-defined QoS value of the carrier under normal load conditions. If the QoS of the carrier is higher than the predetermined upper limit, it means that the resource margin of the carrier is large, and the cell selection/reselection parameters corresponding to the carrier can be adjusted to make it easier for the UE to select into the carrier instead of from the carrier. Go to a carrier with a lower QoS than this carrier. On the contrary, if the QoS of the carrier is lower than the predetermined lower limit, it means that the load of the carrier is heavy and the quality of service provided is poor. You can modify the cell selection/reselection parameters corresponding to the carrier to make it easier for the UE to select from the carrier. Go to a carrier with a higher QoS than this carrier, and select a carrier other than this carrier with a higher QoS than this carrier. It should be noted that, here, there is no limitation on the values of the upper limit and the lower limit of the QoS value, and the values can be set according to actual needs.

For example, if the QoS of the carrier is higher than the predetermined upper limit, the inter-frequency measurement start threshold parameter in the cell selection/reselection parameters can be reduced, and the threshold for UE to perform inter-frequency measurement can be reduced, so that the UE can more easily select the carrier, while It is not easy to select the carrier. If the QoS of the carrier is lower than the predetermined lower limit, increase the inter-frequency measurement start threshold parameter in the cell selection/reselection parameters, and increase the threshold for UE to perform inter-frequency measurement, so that it is easier for the UE to select the carrier, but not easy Select the carrier.

In addition, the method for judging whether the QoS of the carrier exceeds the predetermined QoS range may also be: comparing the QoS of one carrier with the QoS of other carriers for relative QoS difference. For example, according to the QoS, each carrier is sorted in descending order of QoS, and the corresponding cell selection/reselection parameters are modified according to the current carrier's QoS level.

In addition, the method for judging whether the QoS of the carrier exceeds the predetermined QoS range may also be: comparing the QoS of a carrier with the QoS of an adjacent carrier, if the QoS of the carrier differs greatly from the QoS of the adjacent carrier, then Correspondingly modify the cell selection/reselection parameters corresponding to the current carrier.

305. Modify a cell selection/reselection parameter corresponding to the carrier according to the QoS.

Wherein, each carrier corresponds to a group of cell selection/reselection parameters, which includes related information of the current carrier and related information of adjacent carriers. Specifically, the modifiable cell selection/reselection parameters include: inter-frequency measurement start threshold, path loss, channel quality standard, cell reselection parameter indication, penalty time, cell reselection bias, cell reselection lag, and allowed access The minimum reception level, temporary offset, maximum power level of the control channel, power budget and handover boundary, etc.

It should be noted that when modifying the cell selection/reselection parameters corresponding to the current carrier according to the quality of service QoS, the direction of modifying the cell selection re-parameters is to make the carrier with higher QoS easier to be selected by the UE, and it is not easy The existing UEs in the carrier with higher QoS are selected from the carrier to the carrier with lower QoS than the carrier. The higher the QoS of the carrier, the larger the range of modification can be. The specific modification range can be set according to the actual situation. The final effect of modifying the cell selection/reselection parameters is to make it easier for the UE to select a carrier with a higher QoS, thereby reasonably allocating carrier resources.

306. Do not modify the cell selection/reselection parameter corresponding to the carrier.

Among them, there is no need to modify the cell selection/reselection parameters broadcast to the UE each time. If the QoS of the carrier is within the predetermined value range and is at the level of normal load, number of users and throughput, the original cell selection/reselection parameters can be characterized The QoS comprehensive level of the carrier may not modify the cell selection/reselection parameters corresponding to the carrier.

307. Send the modified cell selection/reselection parameter to the user equipment UE camped on the carrier, so that the user equipment UE selects a suitable carrier according to the modified cell selection/reselection parameter.

In this embodiment, the control node can continuously or intermittently send a system message including cell selection/reselection parameters to the UE, so that the UE can obtain relevant information of carriers in the RAN system in real time and allow the cell selection/reselection mechanism. Therefore, the control node broadcasts the cell selection/reselection parameters modified in step 305 or the cell selection/reselection parameters not modified in step 306 to the UEs residing in the carrier.

Furthermore, as shown in Figure 4, since the carrier where the UE is located may already be a carrier with higher QoS, in order to avoid switching out the existing UE in the carrier with higher QoS, resulting in redundant handover operations, you can enter or When in the connected state, determine whether to redirect or switch. Specifically, after the control node acquires the quality of service QoS corresponding to the carrier participating in the selection, the method may further include:

308. When the user equipment UE enters or is in the connected state, determine whether the quality of service QoS of the carrier where the user equipment UE is located is lower than a predetermined QoS standard; if the service quality QoS of the carrier where the user equipment UE is located is lower than the predetermined QoS standard, execute step 309; if the quality of service QoS of the carrier where the user equipment UE is located is not lower than the predetermined QoS standard, execute step 311.

The UE entering or being in the connected state includes when the UE sends a call instruction to the control node and initiates a call, when the control node receives a call instruction to the UE and initiates a call to the UE, and when the UE has established a connection and is in the connected state. In order to ensure the QoS of the UE in the connected state, the predetermined QoS standard of the connected state is pre-specified. If the QoS of the carrier where the UE is located is lower than the predetermined QoS standard, it does not meet the QoS requirements, and the UE can be handed over to a higher QoS carrier. To ensure that a higher QoS is provided to the UE in the connected state; if it is determined according to the QoS that the QoS of the carrier where the UE is located is not lower than the predetermined QoS standard, the quality of carrier switching will not be sent to the UE, and the UE will continue to be on the carrier where the UE is located. Carry out business without switching to other carriers. .

The predetermined QoS standard may be an absolute value expected to be achieved by the predetermined QoS, or may be a relative QoS difference between the carrier where the UE is located and an adjacent carrier. For example, the method for determining whether the QoS of the carrier where the user equipment UE is located is lower than a predetermined QoS standard may be: comparing the QoS of the carrier where the user equipment UE is located with a predetermined QoS value, if the QoS of the carrier is lower than the predetermined QoS value , it is determined that the QoS of the carrier is lower than the predetermined QoS standard, and the handover operation can be performed. The method for determining whether the QoS of the carrier where the user equipment UE is located may be lower than a predetermined QoS standard may be: comparing the QoS of the carrier where the user equipment UE is located with the QoS of an adjacent carrier, if the QoS of the carrier is lower than that of the adjacent carrier QoS, and the difference exceeds a predetermined value, it is determined that the QoS of the carrier is lower than the predetermined QoS standard, and the handover operation can be performed.

309. According to the quality of service QoS corresponding to the carrier participating in the carrier selection, select a carrier whose quality of service QoS is higher than the QoS of the carrier where the UE is located as the target carrier.

Wherein, if the QoS of the carrier where the UE is located is lower than the predetermined QoS standard and a higher service quality cannot be guaranteed, a carrier with a higher QoS is selected to serve it. For example, the QoS of each carrier is sorted from high to low, and the carrier with the highest QoS is selected as the target carrier, or any carrier whose QoS is not lower than the QoS of the carrier where the UE is currently located can also be selected as the target carrier, so that the UE Switch to the target carrier. A carrier whose QoS is higher than that of the carrier where the UE is located may be selected according to actual needs.

310. Send a carrier switching instruction to the user equipment UE, where the carrier switching instruction includes an identifier corresponding to a target carrier to be accessed by the user equipment UE.

Wherein, the carrier switching instruction may be one of a redirection instruction, an inter-frequency switching instruction, a direct retry instruction, or an inter-system switching instruction. The UE can be asked to reselect a carrier, or the target carrier can be directly designated so that the UE can access the target carrier.

311. Not sending the carrier switching instruction.

It should be noted that, for the specific description of some steps in the method for determining the carrier according to the quality of service QoS provided by the embodiment of the present invention, reference may be made to the corresponding content in Embodiment 1, and the embodiments of the present invention will not repeat them here.

The method for determining the carrier according to the quality of service QoS provided by the embodiment of the present invention obtains the QoS of the carrier, and modifies the cell selection/reselection parameters according to the QoS, so that the UE is more inclined to select a cell with a high QoS according to the modified cell selection/reselection parameters. Compared with the prior art method of calculating cell selection/reselection parameters based only on load, it can comprehensively consider resource allocation of candidate carriers, rationally utilize carrier resources, and improve user QoS.

Moreover, when the UE enters or is in the connected state, it is judged whether the QoS of the carrier where the UE is located meets the predetermined standard, and if the QoS of the carrier where the UE is located is low, the UE is switched to another carrier with higher QoS, ensuring The communication quality of the UE further improves the QoS of the UE in the connected state.

An embodiment of the present invention provides a control node, the control node may be a radio network controller (Radio Network Controller, RNC), or an eNodeB, and the carrier can be determined according to the quality of service QoS, as shown in Figure 5, the control node includes : an acquisition unit 51 and a modification unit 52 .

The obtaining unit 51 is configured to obtain the service quality QoS corresponding to the carrier participating in the carrier selection.

The determining unit 52 is configured to determine, for the user equipment UE, a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the QoS.

Further, as shown in FIG. 6 , the determining unit 52 may include: a modifying subunit 521, configured to modify the cell selection/reselection parameters corresponding to the carriers participating in the carrier selection according to the QoS.

The modification subunit 521 is further configured to send the modified cell selection/reselection parameters to the user equipment UE residing in the carrier, so that the user equipment UE can select/reselect parameters according to the modified cell selection/reselection parameters. Select parameters to select a suitable carrier.

Further, the determining unit 52 further includes: a switching subunit 522 .

The switching subunit 522 is configured to send a carrier switching instruction to the user equipment UE, where the carrier switching instruction includes an identifier corresponding to a target carrier to be accessed by the user equipment UE, and switches or restarts the user equipment. Directing to the target carrier, where the QoS of the target carrier is not lower than the QoS of the carrier where the UE is located.

Further, in order to calculate or directly obtain the service quality QoS corresponding to each carrier by fully considering resource utilization in the carrier, the obtaining unit 51 includes: a quality evaluation module 511 .

The quality evaluation module 511 is configured to obtain the service quality QoS corresponding to the carrier participating in the carrier selection according to the throughput rate and/or resource margin of the accessed user.

Wherein, the resource margin includes at least one of the following margins: uplink power resource margin, downlink power resource margin, downlink code resource margin, downlink CE resource margin, uplink CE resource margin, Iub resource margin , the throughput rate of users to be accessed predicted according to other parameters of the carrier, and the like.

In another implementation scenario of the embodiment of the present invention, the base station may calculate the QoS and send it to the control node, so the obtaining unit 51 may further include: a receiving module 512 .

The receiving module 512 is configured to receive the QoS corresponding to the carrier participating in the carrier selection sent by the base station.

Further, in order to ensure higher QoS for the UE in the connected state, when the UE enters or is in the connected state, a carrier whose QoS is higher than that of the carrier where the UE is located may be selected for the UE. Therefore, the switching subunit 522 may further include: a determining module 5221 .

A determination module 5221, configured to determine whether the QoS of the carrier where the user equipment UE is located is lower than a predetermined QoS when the user equipment UE enters or is in a connected state, before sending a carrier switching instruction to the user equipment UE standard.

When the determination module 5221 determines that the quality of service QoS of the carrier where the user equipment UE is located is lower than a predetermined QoS standard, the switching subunit 522 executes the sending of the carrier switching instruction to the user equipment UE, and switches the user equipment Or redirect to the target carrier.

Furthermore, since the control node itself periodically sends cell selection/reselection parameters to UE, it is not necessary to modify the cell selection/reselection parameters sent each time, but to modify cell selection/reselection when the QoS exceeds a certain range parameter. Therefore, the modifying subunit 521 may include: a judging module 5211 .

A judging module 5211, configured to judge whether the quality of service QoS of the carrier participating in carrier selection exceeds a predetermined QoS range.

When the judgment module 5211 judges that the quality of service QoS of the carrier participating in carrier selection exceeds the predetermined QoS range, the modification subunit 521 modifies the cell selection/re-selection corresponding to the carrier participating in carrier selection according to the quality of service QoS. Optional parameters

It should be noted that the determining unit 52 may include both the modifying subunit 521 and the switching subunit 522 , or may only include one of the modifying subunit 521 or the switching subunit 522 . For the specific description of some functional modules in the control node provided in the embodiment of the present invention, reference may be made to the corresponding content in other embodiments of the present invention, and the embodiments of the present invention will not repeat them here.

The embodiment of the present invention also provides a user equipment UE capable of determining a carrier according to QoS. As shown in FIG. 7( a ), the UE includes: a receiving unit 61 and a determining unit 62 .

The receiving unit 61 is configured to receive configuration parameters sent by the control node, the configuration parameters are determined by the control node according to the QoS corresponding to the carrier participating in carrier selection, so that the QoS of the UE is not lower than that of the carrier where the UE is located The service is carried out on the carrier of the QoS.

The determining unit 62 is configured to perform services on a carrier whose QoS is not lower than the QoS of the carrier where the UE is located according to the configuration parameters.

Further, as shown in FIG. 7( b ), the determining unit 62 may include: a receiving subunit 621 .

The receiving unit 61 is further configured to receive the cell selection/reselection parameters modified according to QoS sent by the control node when the UE is in an idle state.

The receiving subunit 621 is configured to select an appropriate carrier according to the modified cell selection/reselection parameters.

As shown in FIG. 7( c ), in another implementation scenario of the present invention, the determining unit 61 may include: a switching subunit 622 .

The receiving unit 61 is further configured to receive a carrier switching instruction sent by the control node according to QoS when the user equipment UE enters or is in a connected state.

The switching subunit 622 is configured to access the target carrier according to the identifier corresponding to the target carrier included in the carrier switching instruction, where the carrier switching instruction includes the identifier corresponding to the target carrier to be accessed by the user equipment UE.

As shown in FIG. 7( d ), in another implementation scenario of the present invention, the determining unit 61 may include: a receiving subunit 621 and a switching unit 622 at the same time.

It should be noted that, for the specific description of the functional modules in the UE provided in the embodiment of the present invention, reference may be made to the corresponding content in other embodiments of the present invention, and the embodiments of the present invention will not repeat them one by one here.

Another embodiment of the present invention also provides a radio network controller RNC, where the RNC includes a control node.

The embodiment of the present invention further provides a system for determining a carrier according to QoS, which is applied in a radio access network RAN. As shown in FIG. 9 , the system includes: at least one control node 71 and at least one user equipment UE72.

Specifically, the control node 71 may be configured to obtain the quality of service QoS corresponding to the carrier participating in carrier selection, modify the cell selection/reselection parameter corresponding to the carrier participating in carrier selection according to the quality of service QoS, and convert the modified Cell selection/reselection parameters are sent to the user equipment UE72 residing in the current carrier; and/or used to send carrier switching to the user equipment UE72 according to the quality of service QoS of the carrier where the user equipment UE72 is in the entering or connected state instruction.

The user equipment UE72 is configured to receive the modified cell selection/reselection parameters sent by the control node 71, and select an appropriate carrier according to the modified cell selection/reselection parameters; The transmitted carrier switching instruction is accessed to the target carrier according to the identifier corresponding to the target carrier included in the carrier switching instruction.

It should be noted that, the specific description of the functional modules in the system for determining the carrier according to the quality of service QoS provided by the embodiment of the present invention can refer to the corresponding content in the control node and the UE in other embodiments of the present invention, and the embodiments of the present invention will not be repeated here. Let me repeat them one by one.

The control node, the UE, and the system for determining the carrier according to the quality of service QoS provided by the embodiments of the present invention obtain the QoS of the carrier, and modify the cell selection/reselection parameters according to the QoS, so that the UE is more inclined to use the modified cell selection/reselection parameters according to the modified cell selection/reselection parameters For selecting a carrier with high QoS, compared with the device in the prior art that only calculates cell selection/reselection parameters based on the load, it can comprehensively consider the resource allocation of the carrier to be selected, rationally use carrier resources, and improve user QoS.

Moreover, when the UE enters or is in the connected state, it is judged whether the QoS of the carrier where the UE is located meets the predetermined standard, and if the QoS of the carrier where the UE is located is low, the UE is switched to another carrier with higher QoS, ensuring The communication quality of the UE further improves the QoS of the UE in the connected state.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (33)

1. A method for determining a carrier based on quality of service, comprising:

the control node acquires the service quality QoS corresponding to the carrier participating in the carrier selection;

and determining the carrier with the QoS not lower than the QoS of the carrier where the UE is located for the user equipment UE according to the QoS.

2. The method of claim 1, wherein the determining the carriers with the QoS not lower than the QoS of the carrier where the UE is located for the UE according to the QoS comprises:

modifying the cell selection/reselection parameters corresponding to the carriers participating in the carrier selection according to the corresponding quality of service (QoS);

and sending the modified cell selection/reselection parameters to User Equipment (UE) residing in a carrier, so that the UE selects the carrier with the QoS not lower than the QoS of the carrier where the UE is located according to the modified cell selection/reselection parameters.

3. The method according to claim 1 or 2, wherein when the UE enters or is in a connected state, the determining, according to the QoS, a carrier with QoS not lower than the QoS of the carrier where the UE is located for the UE comprises:

and sending a carrier switching instruction to the UE, and switching or redirecting the UE to the target carrier, wherein the carrier switching instruction comprises an identifier corresponding to a target carrier to be accessed by the UE, and the QoS of the target carrier is not lower than that of the carrier where the UE is located.

4. The method of claim 1, wherein the controlling node obtains the QoS corresponding to the carrier according to the QoS, and comprises:

and receiving the QoS (quality of service) corresponding to the carrier which participates in the carrier selection and is sent by the base station.

5. The method of claim 1, wherein the controlling node obtains the QoS corresponding to the carrier according to the QoS, and comprises:

and acquiring the QoS corresponding to the carrier wave participating in the carrier wave selection according to the throughput rate and/or the resource allowance of the accessed user.

6. The method of claim 5, wherein the resource headroom comprises at least one of: uplink power resource allowance, downlink code resource allowance, downlink channel unit (CE) resource allowance, uplink channel unit (CE) resource allowance, Iub resource allowance and throughput rate of a user to be accessed.

7. The method of determining a carrier according to quality of service according to claim 6,

the uplink power resource margin is one of the following or a weight of two of the following: the allowance of the total receiving power of the uplink bandwidth and the shared receiving power of a preset enhanced dedicated channel E-DCH; or,

the downlink power resource margin is one or more of the following weights: the surplus of the downlink carrier transmitting power, the carrier transmitting power which is not occupied by a high-speed physical downlink shared channel HS-PDSCH, a high-speed shared control channel HS-SCCH, an absolute access channel E-AGCH, a relative access channel E-RGCH or a confirmation indication channel E-HICH, the carrier transmitting power which is not occupied by a high-speed transmission channel and the power required by a high-speed downlink shared channel HS-DSCH; or,

the downlink code resource allowance is a downlink code resource which can be used after a user to be accessed is accessed into the current carrier; or,

the channel element resource margin is one of the following or a weight of two of the following: the resource allowance of the downlink channel unit and the allowance of the uplink channel unit; or,

the Iub resource margin is one or a weighted sum of the following: uplink Iub resource allowance and downlink Iub resource allowance; or,

acquiring the throughput rate of the user to be accessed by the following method:

Resource((min((P_total-P_R99)，P_max) -. Sigma GBP), code), where P_totalRepresenting the maximum downlink transmit power, PR, of the carrier₉₉Represents R₉₉Power occupied by traffic, sigma GBP represents the sum of power required by HS-DSCH of all user equipment in carrier, and Code represents high-speed downlinkAnd the packet access HSDPA available code Resource, Min represents that the smaller one of the two numerical values is selected, and Resource represents that the throughput rate of the user to be accessed is obtained by inquiring a predefined prediction table according to the residual available power Resource and code Resource of the cell.

8. The method of claim 1, wherein the controlling node obtains the QoS corresponding to the carrier according to the QoS, comprising:

and acquiring the QoS corresponding to the carrier wave participating in the carrier wave selection according to the scheduling priority indication SPI weight of the accessed user in the carrier wave participating in the carrier wave selection and the SPI weight of the user to be accessed.

9. The method according to claim 8, wherein the obtaining QoS corresponding to the carrier participating in carrier selection according to the SPI weight of the accessed user and the SPI weight of the user to be accessed in the carrier participating in carrier selection comprises:

acquiring the ratio of the SPI weight of the user to be accessed to the SPI weight of all users according to the SPI weight of the user to be accessed and the SPI weight of the user to be accessed, wherein the SPI weight of all users is the SPI weight of the user to be accessed plus the SPI weight of the user to be accessed;

and taking the ratio of the SPI weight of the user to be accessed to the SPI weight of all users as the QoS corresponding to the carrier selected by the participating carrier.

10. The method of claim 3, wherein before sending the carrier switch command to the UE, the method comprises:

and when the user equipment UE enters or is in a connection state, determining that the QoS (quality of service) of the carrier where the user equipment UE is located is lower than a preset QoS standard.

11. The method of claim 3 or 10, wherein the carrier switching instruction comprises: a redirection instruction, a pilot frequency switching instruction, a direct retry instruction, or a different system switching instruction.

12. The method of claim 2, wherein before modifying the cell selection/reselection parameters corresponding to the carriers participating in carrier selection according to the QoS, the method comprises:

and judging that the QoS (quality of service) of the carrier participating in the carrier selection exceeds a preset QoS range.

13. The method of claim 1, wherein the carriers participating in carrier selection are: a carrier recorded in the neighbor cell list; or, the carrier with the load lower than the preset load threshold.

14. A method for determining a carrier based on quality of service, comprising:

user Equipment (UE) receives configuration parameters sent by a control node, wherein the configuration parameters are determined by the control node according to QoS corresponding to a carrier selected by a participated carrier, so that the UE performs service on the carrier of which the QoS is not lower than the QoS of the carrier where the UE is located;

and the UE performs service on the carrier with the QoS not lower than the QoS of the carrier where the UE is located according to the configuration parameters.

15. The method of determining a carrier according to quality of service as claimed in claim 14,

the receiving, by the UE, the configuration parameter sent by the control node includes: the UE receives cell selection/reselection parameters which are sent by the control node and are modified according to the corresponding QoS and correspond to the carriers which participate in the carrier selection;

the UE performs service on the carrier with the QoS not lower than the QoS of the carrier where the UE is located according to the configuration parameters, and the service comprises the following steps:

and when the user equipment UE is in an idle state, selecting the carrier with the QoS not lower than the QoS of the carrier where the UE is positioned according to the modified cell selection/reselection parameters.

16. The method according to claim 14 or 15, wherein the UE performs a service on a carrier having a QoS not lower than the QoS of the carrier on which the UE is located according to the configuration parameter, comprising:

the receiving, by the UE, the configuration parameter sent by the control node includes: the UE receives a carrier switching instruction which is sent by the control node and determined according to the corresponding QoS, wherein the carrier switching instruction comprises an identifier corresponding to a target carrier to be accessed by the UE;

and the UE is accessed to the target carrier according to the identifier corresponding to the target carrier included in the carrier switching instruction when entering or being in a connection state.

17. The method of claim 16, wherein the carrier switch instruction comprises: a redirection instruction, a pilot frequency switching instruction, a direct retry instruction, or a different system switching instruction.

18. A control node, comprising:

an obtaining unit, configured to obtain a quality of service QoS corresponding to a carrier participating in carrier selection;

and the determining unit is used for determining the carrier with the QoS not lower than the QoS of the carrier where the UE is located for the user equipment UE according to the QoS.

19. The control node according to claim 18, wherein the determining unit comprises:

a modifying subunit, configured to modify, according to the QoS, a cell selection/reselection parameter corresponding to the carrier participating in carrier selection;

and the sending subunit is configured to send the modified cell selection/reselection parameter to the UE residing in the carrier, so that the UE selects, according to the modified cell selection/reselection parameter, a carrier having a QoS that is not lower than the QoS of the carrier in which the UE is located.

20. The control node according to claim 18 or 19, wherein the determining unit comprises:

and a switching subunit, configured to send a carrier switching instruction to the UE, and switch or redirect the UE to the target carrier, where the carrier switching instruction includes an identifier corresponding to a target carrier to be accessed by the UE, and a QoS of the target carrier is not lower than a QoS of a carrier where the UE is located.

21. The control node according to claim 18, wherein said obtaining unit comprises:

and the receiving module is used for receiving the QoS (quality of service) corresponding to the carrier which participates in the carrier selection and is sent by the base station.

22. The control node according to claim 18, wherein said obtaining unit comprises:

and the quality evaluation module is used for acquiring the service quality QoS corresponding to the carrier wave which participates in the carrier wave selection according to the throughput rate and/or the resource allowance of the accessed user.

23. The control node of claim 22, wherein the resource headroom comprises at least one of: uplink power resource allowance, downlink code resource allowance, downlink channel unit (CE) resource allowance, uplink channel unit (CE) resource allowance, Iub resource allowance and throughput rate of a user to be accessed.

24. The control node according to claim 23,

the uplink power resource margin is one of the following or a weight of two of the following: the allowance of the total receiving power of the uplink bandwidth and the shared receiving power of a preset enhanced dedicated channel E-DCH; or,

the downlink power resource margin is one or more of the following weights: the surplus of the downlink carrier transmitting power, the carrier transmitting power which is not occupied by a high-speed physical downlink shared channel HS-PDSCH, a high-speed shared control channel HS-SCCH, an absolute access channel E-AGCH, a relative access channel E-RGCH or a confirmation indication channel E-HICH, the carrier transmitting power which is not occupied by a high-speed transmission channel and the power required by a high-speed downlink shared channel HS-DSCH; or,

the downlink code resource allowance is a downlink code resource which can be used after a user to be accessed is accessed into the current carrier; or,

the channel element resource margin is one of the following or a weight of two of the following: the resource allowance of the downlink channel unit and the allowance of the uplink channel unit; or,

the Iub resource margin is one or a weighted sum of the following: uplink Iub resource allowance and downlink Iub resource allowance; or,

acquiring the throughput rate of the user to be accessed by the following method:

Resource((min((P_total-P_R99)，P_max) -. Sigma GBP), code), where P_totalRepresenting the maximum downlink transmit power, PR, of the carrier₉₉Represents R₉₉The method comprises the steps that the power occupied by service, sigma GBP represents the sum of the power needed by HS-DSCH of all user equipment in a carrier, Code represents available Code resources of high-speed downlink packet access HSDPA, Min represents that the smaller one of the two values is selected, and Resource represents that a predefined prediction table is inquired according to the residual available power resources and Code resources of a cell to obtain the throughput rate of a user to be accessed.

25. The control node according to claim 18, wherein said obtaining unit is configured to:

and acquiring the quality of service (QoS) corresponding to the carrier wave participating in the carrier wave selection according to the Scheduling Priority Indication (SPI) weight of the accessed user in the carrier wave participating in the carrier wave selection and the SPI weight of the user to be accessed.

26. The control node according to claim 25, wherein the obtaining unit is specifically configured to obtain, according to the SPI weight of the accessed user and the SPI weight of the user to be accessed, a ratio of the SPI weight of the user to be accessed to the SPI weights of all users, where the SPI weights of all users are the SPI weight of the accessed user plus the SPI weight of the user to be accessed; and taking the ratio of the SPI weight of the user to be accessed to the SPI weight of all users as the QoS corresponding to the carrier selected by the participating carrier.

27. The control node according to claim 19, wherein the handover subunit comprises:

a determining module, configured to determine, when the UE enters or is in a connected state, whether a quality of service (QoS) of a carrier in which the UE is located is lower than a predetermined QoS standard before sending a carrier switching instruction to the UE;

and when the determining module determines that the quality of service (QoS) of the carrier where the User Equipment (UE) is located is lower than a predetermined QoS standard, the switching subunit executes the sending of the carrier switching instruction to the User Equipment (UE) and switches or redirects the user equipment to the target carrier.

28. The control node according to claim 19, wherein the modifying subunit comprises:

the judging module is used for judging whether the QoS of the carrier participating in the carrier selection exceeds a preset QoS range or not;

and when the judging module judges that the QoS of the carrier wave selected by the participated carrier wave exceeds the preset QoS range, the modifying subunit modifies the cell selection/reselection parameter corresponding to the carrier wave selected by the participated carrier wave according to the QoS.

29. A User Equipment (UE), comprising:

a receiving unit, configured to receive a configuration parameter sent by a control node, where the configuration parameter is determined by the control node according to QoS corresponding to a carrier participating in carrier selection, so that the UE performs a service on a carrier having QoS that is not lower than the QoS of the carrier where the UE is located;

and the determining unit is used for performing service on the carrier with the QoS not lower than the QoS of the carrier where the UE is located according to the configuration parameters.

30. The UE of claim 29, wherein the determining unit comprises: a receiving subunit;

the receiving unit is further configured to receive a cell selection/reselection parameter, which is sent by the control node and modified according to the QoS, when the cell selection/reselection parameter is in an idle state;

and the receiving subunit is configured to select, according to the modified cell selection/reselection parameter, a carrier with QoS that is not lower than the QoS of the carrier where the UE is located.

31. The UE of claim 29 or 30, wherein the determining unit further comprises: a switching subunit;

the receiving unit is further configured to receive a carrier switching instruction sent by the control node according to QoS when the user equipment UE enters or is in a connected state;

the switching subunit is configured to access to a target carrier according to an identifier corresponding to the target carrier included in the carrier switching instruction, where the carrier switching instruction includes an identifier corresponding to a target carrier to be accessed by the UE.

32. A radio network controller, RNC, comprising:

the control node according to any of claims 18-28.

33. A system for determining carriers based on quality of service, comprising:

at least one control node according to any of claims 18-28, and

at least one user equipment, UE, according to any of the claims 29-31.

Images