CN1988499B - A method of channel allocation - Google Patents

Abstract

The present invention discloses a channel allocation method, which is characterized in that the method includes the following steps: a. Perform dedicated channel admission control judgment and shared channel admission control judgment on the VoIP service applying for access, if the dedicated channel is allowed Access control judgment and shared channel admission control judgment allow access to the VoIP service at the same time, then perform step b; otherwise, access the channel that allows access or deny access, and end this process; b, compare channel condition parameters and channel conditions The size of the threshold determines whether the channel condition is good or bad; if the channel condition is good, the VoIP service is connected to a dedicated channel; if the channel condition is not good, the VoIP service is connected to a shared channel. By using the method disclosed in the invention, channels can be effectively and reasonably assigned to VoIP services applying for access.

Description

A method of channel allocation

technical field

The invention relates to a VoIP service access technology in a mobile communication system, in particular to a channel allocation method in the VoIP service.

Background technique

Voice over IP (VoIP, Voice over IP) is a transmission technology that utilizes a router-based IP packet switching network to realize voice communication. One of the evolution trends of the mobile communication system is all-IP network, including service IP. The use of VoIP technology in mobile communication systems can save bandwidth, improve spectrum efficiency, and provide a unified interface and platform for voice and data. If there are dedicated channels and shared channels in the mobile communication system, the VoIP service can be supported by either the dedicated channels or the shared channels. The shared channel means that multiple users occupy the same channel, which may be time division, or code division, or both time division and code division. For example, the VoIP in Universal Mobile Telecommunication System (UMTS, Universal Mobile Telecommunication System) realizes end-to-end voice IP transmission through UMTS. UMTS can use a dedicated channel (DCH, Dedicated Channel) to support VoIP, or use a shared channel that is high-speed Downlink Packet Access (HSDPA, High Speed Downlink Packet Access) channel to support VoIP. The DCH can support various services such as conversation, flow, background, and interaction, and can also support VoIP; a high-speed downlink packet access (HSDPA, High Speed Downlink Packet Access) channel has higher spectral efficiency than a dedicated channel, but HSDPA The channel is originally designed for non-real-time or delay-insensitive services. If you want to support mobile VoIP services with low data rates, high delay requirements and mobile VoIP services on the HSDPA channel, you need to consider delay, spectrum efficiency, The comprehensive influence of code resource utilization efficiency, power consumption and other factors. The VoIP service assigned to the HSDPA channel still needs to use an associated DCH to provide control information. Although the associated DCH has low power, it also consumes system code resources and base station transmission power. If the VoIP service with low power consumption is allocated to the HSDPA channel, it may cause problems such as waste of code resources, reduction of spectrum efficiency, and complex scheduling scheme caused by high delay.

The disadvantage of the prior art is that the channel bandwidth is sufficient, that is, when the channel condition is good, the VoIP service is supported by the dedicated channel, and the power consumption is small, but when the channel condition is not good, the power of the VoIP service supported by the dedicated channel will increase, and the power consumption will increase . When the channel condition is bad, VoIP services are supported by shared channels such as HSDPA channels. Since the total power of the HSDPA channel remains unchanged, the power consumption can be controlled. Channel, due to the service assigned to the HSDPA channel, it is still necessary to use an associated DCH to provide control information. Although the power of the associated DCH is small, it will also increase the consumption of system code resources and the transmission power of the base station; and because the HSDPA channel can be accessed The number of code division users is limited. When using HSDPA channels, if the channels are not used up, it may cause problems such as waste of code resources and decline in spectrum efficiency. When a VoIP service applies for access, there is no solution in the prior art that can allocate channels for the VoIP service applying for access according to different requirements.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a channel allocation method to effectively and reasonably allocate channels to VoIP services applying for access.

Technical scheme of the present invention is realized like this:

A method for channel allocation, said method comprising the following steps:

a. Perform dedicated channel admission control judgment and shared channel admission control judgment on the VoIP service applying for access, if the dedicated channel admission control judgment and shared channel admission control judgment allow access to the VoIP service at the same time, then perform the steps b; Otherwise, access the channel that is allowed to be accessed or deny access, and end this process;

b. Compare the channel condition parameter and the channel condition threshold to determine whether the channel condition is good or bad; if the channel condition is good, then the VoIP service is connected to a dedicated channel; if the channel condition is not good, then the VoIP service is connected to a shared channel .

The channel condition parameter described in step b is the initial downlink transmit power, and the channel condition threshold is the VoIP minimum downlink transmit power threshold;

Before the step b, it includes: obtaining the pilot strength of the VoIP service applying for access, and estimating the initial downlink transmission power when the VoIP service accesses a dedicated channel according to the pilot strength; setting the VoIP minimum downlink transmission power threshold ;

Correspondingly, determining whether the channel condition is good or bad as described in step b specifically includes: judging whether the initial downlink transmission power is greater than or equal to the VoIP minimum downlink transmission power threshold, if greater than or equal to, then the channel condition is bad; if less, then the channel condition is good.

The channel condition parameter described in step b is an initial channel quality indication, and the channel condition threshold is the VoIP maximum channel quality indication threshold;

Before the step b, it includes: obtaining the pilot strength of the VoIP service applying for access, and estimating the initial channel quality indication when the VoIP service accesses the shared channel according to the pilot strength; setting the VoIP maximum channel quality indication threshold ;

Correspondingly, determining whether the channel condition is good or bad as described in step b specifically includes: judging whether the initial channel quality indicator is less than the VoIP maximum channel quality indicator threshold, if less, then the channel condition is bad; if not less than, then the channel condition is good.

The channel condition parameters described in step b are the initial downlink transmission power and the initial channel quality indication, and the channel condition threshold is the VoIP minimum downlink transmission power threshold and the VoIP maximum channel quality indication threshold;

Before the step b, it includes: obtaining the pilot strength of the VoIP service applying for access, and estimating the initial downlink transmission power when the VoIP service accesses a dedicated channel according to the pilot strength; setting the VoIP minimum downlink transmission power threshold Obtain the pilot strength of the VoIP service applying for access, and estimate the initial channel quality indication when the VoIP service accesses the shared channel according to the pilot strength; set the VoIP maximum channel quality indication threshold;

Correspondingly, determining whether the channel condition is good or bad as described in step b is specifically: judging whether the initial downlink transmission power is greater than or equal to the VoIP minimum downlink transmission power threshold and whether the initial channel quality indication is less than the VoIP maximum channel quality indication threshold. If both are established, then The channel condition is bad; if both are not established, the channel condition is good; if only one is established, then the channel condition is determined to be good or bad according to the accuracy of the two judgments that the system believes.

Before step b, it includes: judging whether to use the initial downlink transmission power as the channel condition parameter or to use the initial channel quality indicator as the channel condition parameter; if the initial downlink transmission power is used as the channel condition parameter, then using the VoIP minimum downlink transmission power threshold as the channel condition threshold; If the initial channel quality indication is used as the channel condition parameter, then the VoIP maximum channel quality indication threshold is used as the channel condition threshold;

Correspondingly, when the initial downlink transmission power is used as the channel condition parameter, and the VoIP minimum downlink transmission power threshold is used as the channel condition threshold, the determination of the channel condition as described in step b is specifically: judging whether the initial downlink transmission power is greater than or equal to the VoIP minimum downlink Transmit power threshold, if greater than or equal to, the channel condition is not good; if less than, the channel condition is good;

When the initial channel quality indication is used as the channel condition parameter, and when the VoIP maximum channel quality indication threshold is used as the channel condition threshold, the determination of the channel condition described in step b is specifically as follows: judging whether the initial channel quality indication is less than the VoIP maximum channel quality indication threshold, If less than, the channel condition is not good; if not less than, the channel condition is good.

Before step b, it includes: judging whether to use only the initial downlink transmission power judgment or only the initial channel quality indication judgment or to use both the initial downlink transmission power judgment and the initial channel quality indication judgment; if only the initial downlink transmission power judgment is used, the initial downlink transmission power Power is used as a channel condition parameter, and the VoIP minimum downlink transmit power threshold is used as the channel condition threshold; if only the initial channel quality indicator is used for judgment, the initial channel quality indicator is used as the channel condition parameter, and the VoIP maximum channel quality indicator threshold is used as the channel condition threshold; If both the initial downlink transmit power judgment and the initial channel quality indication judgment are used, the initial downlink transmit power and initial channel quality indication are used as channel condition parameters respectively, and the VoIP minimum downlink transmit power threshold and VoIP maximum channel quality indication threshold are used as channel condition thresholds ;

Correspondingly, when the initial downlink transmission power is used as the channel condition parameter, and the VoIP minimum downlink transmission power threshold is used as the channel condition threshold, the determination of the channel condition as described in step b is specifically: judging whether the initial downlink transmission power is greater than or equal to the VoIP minimum downlink Transmit power threshold, if greater than or equal to, the channel condition is not good; if less than, the channel condition is good;

When the initial channel quality indication is used as the channel condition parameter, and when the VoIP maximum channel quality indication threshold is used as the channel condition threshold, the determination of the channel condition described in step b is specifically as follows: judging whether the initial channel quality indication is less than the VoIP maximum channel quality indication threshold, If less than, the channel condition is not good; if not less than, the channel condition is good;

The initial downlink transmission power and the initial channel quality indication are used as channel condition parameters respectively, and when the VoIP minimum downlink transmission power threshold and the VoIP maximum channel quality indication threshold are used as the channel condition threshold, the determination of the channel condition as described in step b is specifically as follows: judging Whether the initial downlink transmission power is greater than or equal to the VoIP minimum downlink transmission power threshold and the initial channel quality indication is less than the VoIP maximum channel quality indication threshold are simultaneously established. If both are established, the channel condition is not good; if they are not established at the same time, the channel condition is good; if only one If it is established, the channel condition is determined to be good or bad according to the accuracy of the two judgments that the system believes.

When the initial downlink transmission power is used as the channel condition parameter, and the VoIP minimum downlink transmission power threshold is used as the channel condition threshold, before the step b includes:

Estimating the initial downlink transmission power when the VoIP service accesses a dedicated channel according to the pilot strength of the VoIP service applying for access; and setting the VoIP minimum downlink transmission power threshold.

When the initial channel quality indication is used as the channel condition parameter, and the VoIP maximum channel quality indication threshold is used as the channel condition threshold, the step b includes before:

Estimating the initial channel quality indicator when the VoIP service accesses the shared channel according to the pilot strength of the VoIP service applying for access; and setting the VoIP maximum channel quality indicator threshold.

In step a, the access to the channel that is allowed to be accessed or the channel to be denied access is specifically as follows:

If the dedicated channel admission control decision allows access to the VoIP service, and the shared channel admission control decision refuses to access the VoIP service, then access the VoIP service on the dedicated channel; if the dedicated channel admission control decision rejects the access Access to the VoIP service, and the shared channel admission control decision allows access to the VoIP service, then access the VoIP service on the shared channel; if the dedicated channel admission control decision and the shared channel admission control decision deny access at the same time For the VoIP service, deny access to the VoIP service system.

The shared channel is a high-speed downlink packet access channel.

In the present invention, when there is a VoIP service application for access in the system, the admission control judgment of the dedicated channel and the shared channel is first performed, and if both the dedicated channel and the shared channel are allowed to access the service, then the estimated channel condition The parameter is compared with the set channel condition threshold value to judge whether the channel condition is good or bad. If the judgment result is that the channel condition is good, the VoIP service will be connected to the dedicated channel. If the judgment result is that the channel condition is not good, the The VoIP service accesses the shared channel. The present invention has following beneficial effect:

1) By comprehensively considering conditions such as code resources, power resources, and spectrum efficiency, the VoIP services that apply for access are allocated to dedicated channels or shared channels reasonably, so that the system can more effectively support VoIP services to improve spectrum efficiency and system capacity.

2) Utilize the method for channel allocation in the present invention, when the channel condition is good, the VoIP service that applies for access can be accessed to the dedicated channel, and the effect of low power and high spectrum efficiency can be achieved; when the channel condition is not good, the application can be Accessed VoIP services access shared channels such as HSDPA channels in order to make full use of the advantages of channel sharing. Specifically: since VoIP is sent in packets, when using shared channels, that is, multi-user shared channels, spectral efficiency can be improved, and because shared channels The total power remains unchanged, and power consumption can also be saved.

Description of drawings

FIG. 1 is a schematic diagram of the process of using initial downlink transmission power judgment in channel allocation in the present invention;

FIG. 2 is a schematic diagram of the process of using the initial channel quality indication judgment in channel allocation in the present invention;

Fig. 3 is a schematic diagram of the process of using initial downlink transmission power judgment or channel quality indication judgment in channel allocation in the present invention.

Detailed ways

In the present invention, when there is a VoIP service application for access in the system, the admission control judgment of the dedicated channel and the shared channel is first carried out, and if the result of the judgment is that both channels are denied access, then the service is rejected. ; If only one channel is allowed to be accessed, then the service is connected to the channel that allows access to the service; if both the dedicated channel and the shared channel are allowed to access the service, the estimated channel condition parameters and the set channel condition Threshold value is compared, and judge the quality of channel condition, if the judgment result is that the channel condition is good, then connect this VoIP service to the dedicated channel, if the judgment result is that the channel condition is not good, then this VoIP service is connected to shared channel.

Here, the quality of the judgment channel condition can be determined by comparing the channel condition parameter and the channel condition threshold. The downlink transmission power threshold; the initial channel quality indication judgment can also be used, and the channel condition parameter is the initial channel quality indication at this time, and the channel condition threshold is the VoIP maximum channel quality indication threshold; the initial downlink transmission power or channel quality indication judgment can also be used, this When the channel condition parameter is the initial downlink transmit power or initial channel quality indication, the channel condition threshold is the VoIP minimum downlink transmit power threshold or the VoIP maximum channel quality indication threshold; the initial downlink transmit power and channel quality indication can also be used for judgment at the same time, and the channel The condition parameters are the initial downlink transmission power and the initial channel quality indication, and the channel condition threshold is the VoIP minimum downlink transmission power threshold and the VoIP maximum channel quality indication threshold.

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

Embodiment 1: Using the initial downlink transmission power decision, this embodiment is applicable to UMTS.

Figure 1 is a schematic diagram of the process of using initial downlink transmit power judgment in channel allocation, and the process shown in Figure 1 includes the following steps:

Step 101: VoIP service j applies for access.

There may be many VoIP services to apply for access, and the VoIP service j mentioned in step 101 refers to one of them, which is called VoIP service j in this article.

Step 102: Estimate the initial downlink transmission power P _ini,j when the VoIP service j is accessed.

In step 102, a variety of methods in the prior art can be used to estimate P _{ini, j} , usually by first obtaining the pilot strength when VoIP service j applies for access, and assuming that only DCH can access VoIP service j, and then P _ini,j when the VoIP service j accesses the DCH is estimated according to the pilot frequency strength.

Step 103: Carry out DCH admission control decision and HSDPA channel admission control decision to VoIP service j; if DCH admission control decision and HSDPA channel admission control decision deny access to VoIP service j at the same time, then deny access to VoIP service j, End this process; if the DCH admission control decision allows access to VoIP service j, and the HSDPA channel admission control decision rejects access to VoIP service j, then access VoIP service j on the DCH, and end this process; if the DCH admission control decision Refuse to access VoIP service j, but the HSDPA channel admission control decision allows access to VoIP service j, then access VoIP service j on the HSDPA channel, and end this process; if the DCH and HSDPA channel admission control decisions allow access to VoIP service at the same time j, execute step 104.

In step 103, the DCH admission control decision algorithm and the HSDPA channel admission control decision algorithm can use various methods in the prior art, such as according to the number of users, or according to power, etc., usually used by the admission control module on the network side The admission control decision is made on the access request information of the VoIP service j, including the DCH admission control decision and the HSDPA channel admission control decision.

Step 104: Set the VoIP minimum downlink transmission power threshold P _DL,MinTh .

In step 104, PDL _{, MinTh} can be set according to the principle of ensuring the optimization of the overall system resources, for example, according to the principle of maximizing throughput and spectrum efficiency, or minimizing power, or choosing a compromise between throughput and power.

Step 105: Judging whether P _{ini, j} is greater than or equal to P _{DL, MinTh} set in step 104, if P _{ini, j} ≥ P _{DL, MinTh} , access VoIP service j on the HSDPA channel; if P _{ini, j} < P _{DL , MinTh} , the VoIP service j is accessed on the DCH.

A smaller P _ini,j indicates that the VoIP service j is located close to the base station or the channel condition is good. If this business is assigned to the HSDPA channel, considering the time delay requirements of voice services, the HSDPA channel may not be able to fully utilize its good transmission conditions, resulting in lower spectrum efficiency. In addition, after the VoIP service whose downlink DCH may consume less power is allocated to the HSDPA channel, it still needs to use an associated DCH for it, which may consume more code resources and power instead. Therefore, in step 105, if P _{ini, j} ≥ _{P DL, MinTh} , then the channel condition is considered bad, and the VoIP service j with P _{ini, j} greater than or equal to P _{DL, MinTh} is allocated to the HSDPA channel; otherwise, if P _{ini, j} <P _DL,MinTh , it is considered that the channel condition is good, and the VoIP service j with P _ini,j smaller than P _DL,MinTh is allocated to the DCH.

In this embodiment, the value of P _ini,j can be used in DCH admission control decisions. During actual application, the value of P _{ini, j} also can not be used in the DCH admission control decision, when the value of P _{ini, j} is not used in the DCH admission control decision, step 102 can be between step 101 and step 105 Execute anywhere.

Step 104 can also be performed at any position before step 103 except between step 103 and step 105 as shown in FIG. 1 .

Embodiment 2: Using the initial channel quality indication to make a decision, this embodiment is applicable to UMTS.

Fig. 2 is a schematic diagram of the process of using initial channel quality indication judgment in channel allocation, and the process shown in Fig. 2 includes the following steps:

Step 201: VoIP service j applies for access.

Step 202: Estimate the initial channel quality indicator CQI _ini,j when the VoIP service j is accessed.

In step 202, various methods in the prior art can be used to estimate the CQI _{ini, j} , usually by first obtaining the pilot strength when the VoIP service j applies for access, and assuming that only the HSDPA channel can access the VoIP service j, Then estimate the CQI _ini,j when the VoIP service j accesses the HSDPA channel according to the pilot frequency strength.

Step 203: Carry out DCH admission control decision and HSDPA channel admission control decision to VoIP service j; if DCH admission control decision and HSDPA channel admission control decision deny access to VoIP service j at the same time, then deny access to VoIP service j, End this process; if the DCH admission control decision allows access to VoIP service j, and the HSDPA channel admission control decision rejects access to VoIP service j, then access VoIP service j on the DCH, and end this process; if the DCH admission control decision Refuse to access VoIP service j, but the HSDPA channel admission control decision allows access to VoIP service j, then access VoIP service j on the HSDPA channel, and end this process; if the DCH and HSDPA channel admission control decisions allow access to VoIP service at the same time j, execute step 204.

In step 203, the DCH admission control decision algorithm and the HSDPA channel admission control decision algorithm can use a variety of methods in the prior art, such as based on the number of users, or based on power, etc., usually used by the admission control module on the network side The admission control decision is made on the access request information of the VoIP service j, including the DCH admission control decision and the HSDPA channel admission control decision.

Step 204: Set the VoIP maximum channel quality indication threshold CQI _j,MaxTh .

In step 204, CQI _{j, MaxTh} can be set according to the principle of ensuring the optimization of the overall system resources, such as setting according to the principle of maximizing throughput and spectrum efficiency, or minimizing power, or choosing a compromise between throughput and power.

Step 205: Judging whether CQI _{ini, j} is less than the set VoIP maximum channel quality indication threshold CQI _{j, MaxTh} , if CQI _{ini, j} < CQI _{j, MaxTh} , access VoIP service j on the HSDPA channel; if CQI _{ini, j} ≥ CQI _{j, MaxTh} , access VoIP service j on the DCH.

A larger CQI _ini,j indicates that the VoIP service user is located close to the base station or the channel condition is good. Therefore in step 205, if CQI _ini,j <CQI _j,MaxTh , then consider that the channel condition is not good, and CQI _ini,j is less than CQI _j,MaxTh VoIP service j is allocated to the HSDPA channel; otherwise if CQI _ini,j ≥ CQI _j,MaxTh , it is considered that the channel condition is good, and the VoIP service j with CQI _ini,j greater than or equal to CQI _j,MaxTh is allocated to the DCH.

In this embodiment, the value of CQI _ini,j can be used in HSDPA channel admission control decision. During actual application, the value of CQI _{ini, j} also can not be used in the decision of HSDPA channel admission control, when the value of CQI _{ini, j} is not used in the decision of HSDPA channel admission control, step 202 can be between step 201 and step 205 Execute anywhere in between.

Step 204 can also be performed at any position before step 203 except between step 203 and step 205 as shown in FIG. 2 .

Embodiment 3: Using initial downlink transmission power or channel quality indication, this embodiment is applicable to UMTS.

Figure 3 is a schematic diagram of the process of using initial downlink transmission power judgment or channel quality indication judgment in channel allocation, and the process shown in Figure 3 includes the following steps:

Step 301: VoIP service j applies for access.

Step 302: Estimate the initial downlink transmission power P _ini,j and the initial channel quality indicator CQI _ini,j when the VoIP service j is accessed.

In step 302, various methods in the prior art can be used to estimate P _ini,j and CQI _ini,j . Usually, the pilot strength when VoIP service j is applied for access is obtained first, and it is assumed that only DCH can be accessed After VoIP service j, estimate the P _ini,j when VoIP service j accesses DCH according to the pilot frequency strength, assuming that only HSDPA channel can access VoIP service j, then estimate the CQI when VoIP service j accesses the HSDPA channel according to the pilot frequency strength _{ini, j} .

Step 303: Carry out DCH admission control decision and HSDPA channel admission control decision to VoIP service j; if DCH admission control decision and HSDPA channel admission control decision deny access to VoIP service j at the same time, then deny access to VoIP service j, End this process; If the DCH admission control decision allows access to VoIP service j, while the HSDPA channel admission control decision rejects access to VoIP service j, then access VoIP service j on the DCH, and end this process; if DCH admission control Decide to deny access to VoIP service j, but the HSDPA channel admission control decision allows access to VoIP service j, then access VoIP service j on the HSDPA channel, and end this process; if the DCH and HSDPA channel admission control decisions allow access to VoIP at the same time For business j, step 304 is performed.

In step 303, the DCH admission control decision algorithm and the HSDPA channel admission control decision algorithm can use various methods in the prior art, such as according to the number of users, or according to power, etc., usually used by the admission control module on the network side The admission control decision is made on the access request information of the VoIP service j, including the DCH admission control decision and the HSDPA channel admission control decision.

Step 304: Determine whether to use the initial downlink transmission power decision or the initial channel quality indicator decision, if the initial downlink transmission power decision is used, perform step 305; if use the initial channel quality indicator decision, perform step 307.

In practical applications, whether to use the initial downlink transmission power judgment or the initial channel quality indication judgment can be selected according to the system's prior settings. When using the initial channel quality indication decision, use the initial channel quality indication decision.

Step 305: Set the VoIP minimum downlink transmit power threshold P _DL,MinTh .

In step 305, PDL _{, MinTh} can be set according to the principle of ensuring the optimization of the overall system resources, such as the principle of maximizing throughput and spectrum efficiency, or minimizing power, or a compromise between throughput and power.

Step 306: Determine whether P _{ini, j} is greater than or equal to the set P _{DL, MinTh} , if P _{ini, j} ≥ P _{DL, MinTh} , then access VoIP service j on the HSDPA channel, and end this process; if P _{ini, j} <P _{DL, MinTh} , access the VoIP service j on the DCH, and end this process.

In step 306, if P _{ini, j} ≥ _{P DL, MinTh} , then the channel condition is considered bad, and the VoIP service j with P _{ini, j} greater than or equal to P _{DL, MinTh} is allocated to the HSDPA channel; otherwise, if P _{ini, j} < P _DL,MinTh , it is considered that the channel condition is good, and the VoIP service j whose P _ini,j is smaller than P _DL,MinTh is allocated to the DCH.

Step 307: Set the VoIP maximum channel quality indication threshold CQI _j,MaxTh .

In step 307, CQI _{j, MaxTh} can be set according to the principle of ensuring the optimization of the overall system resources, such as setting according to the principle of maximizing throughput and spectrum efficiency, or minimizing power, or choosing a compromise between throughput and power.

Step 308: Judging whether CQI _ini,j is less than the set VoIP maximum channel quality indication threshold CQI _j,MaxTh , if CQI _ini,j <CQI _j,MaxTh , access VoIP service j on the HSDPA channel; if CQI _ini,j ≥ CQI _{j, MaxTh} , access VoIP service j on the DCH.

In step 308, if CQI _ini,j <CQI _j,MaxTh , the channel condition is considered bad, and the VoIP service j with CQI _ini,j less than CQI _j,MaxTh is allocated to the HSDPA channel; otherwise, if CQI _ini,j ≥CQI _{j, MaxTh} , it is considered that the channel condition is good, and the VoIP service j whose CQI _{ini, j} is greater than or equal to CQI _{j, MaxTh} is allocated to the DCH.

In this embodiment, the value of P _ini,j can be used in DCH admission control decisions, and the value of CQI _ini,j can be used in HSDPA channel admission control decisions. In actual application, the value of P _ini,j may not be used in the DCH admission control decision, and the CQI _ini,j value may not be used in the HSDPA channel admission control decision. In this case, step 302 in Fig. 3 It can be executed at any position between step 301 and step 306; in step 302, the step of estimating CQI _ini,j can also be between step 306 and step 307, or between step 307 and step 308.

In this embodiment, step 304 may also be: judging whether only the initial downlink transmission power decision is used, or only the initial channel quality indicator decision is used, or both the initial downlink transmission power decision and the initial channel quality indicator decision are used. Among them, if the initial downlink transmission power judgment and the initial channel quality indication judgment are used at the same time, it is necessary to judge whether P _{ini, j} ≥ P _{DL, MinTh} and CQI _{ini, j} < CQI _{j, and MaxTh} are established at the same time. If both are established, then in HSDPA channel to access VoIP service j; if both are not established, access VoIP service j on the DCH; if only one is established, then according to factors such as the accuracy of the two judgments considered by the system, access VoIP service j on the HSDPA channel or in the The DCH accesses the VoIP service j, wherein the VoIP service j judged to have a bad channel condition is connected to the HSDPA channel, and the VoIP service j judged to have a good channel condition is connected to the DCH.

In this embodiment, instead of judging whether to use the initial downlink transmission power decision or the initial channel quality indicator decision, it is also possible to directly use the initial downlink transmission power decision and the initial channel quality indicator decision at the same time. When the initial downlink transmission power judgment and the initial channel quality indication judgment are used at the same time, it is necessary to judge whether P _{ini, j} ≥ P _{DL, MinTh} and CQI _{ini, j} < CQI _{j, MaxTh} are established, and if both are established, the HSDPA channel access VoIP service; if both are not established, access VoIP service on DCH; if only one is established, you can access VoIP service j on HSDPA channel or access VoIP service on DCH according to factors such as the accuracy of the two judgments considered by the system j, where the VoIP service j judged to be in poor channel condition is connected to the HSDPA channel, and the VoIP service j judged to be in good channel condition is connected to the DCH.

In the present invention, different initial downlink transmission power estimation algorithms, different initial channel quality indicator report value estimation algorithms, different DCH admission control decision algorithms, different HSDPA channel admission control decision algorithms, VoIP minimum downlink transmission power threshold Different values and different values of the VoIP maximum channel quality indication threshold do not affect the use of the channel allocation method in the present invention.

In addition to the UMTS system, the present invention can also be applied to other wireless communication systems like UMTS in which dedicated channels and shared channels coexist.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the application scope of the present invention.

Claims (10)

1. the method for a channel allocation is characterized in that, described method comprises following steps:

A, the VoIP business that application is inserted are carried out dedicated channel access control judgement and shared channel access control judgement, if dedicated channel access control judgement and shared channel access control judgement allow to insert described VoIP business, then execution in step b simultaneously; Otherwise insert the channel or the refusal that allow to insert and insert process ends;

B, comparison channel condition parameter and channel condition thresholding are to determine the quality of channel condition; If channel condition is good, then with described VoIP service access dedicated channel; If channel condition is bad, then with described VoIP service access shared channel.

2. method according to claim 1 is characterized in that, the described channel condition parameter of step b is the initial downlink transmitting power, and the channel condition thresholding is the minimum down transmitting power thresholding of VoIP;

Comprise before the described step b: obtain the pilot frequency intensity of the VoIP business that described application inserts, and the initial downlink transmitting power when estimating described VoIP service access dedicated channel according to pilot frequency intensity; The minimum down transmitting power thresholding of VoIP is set;

Correspondingly, the quality of the described definite channel condition of step b is specially: whether judge the initial downlink transmitting power more than or equal to the minimum down transmitting power thresholding of VoIP, if more than or equal to, then channel condition is bad; If less than, then channel condition is good.

3. method according to claim 1 is characterized in that, the described channel condition parameter of step b is the initial channel quality indication, and the channel condition thresholding is a VoIP maximum channel quality indication thresholding;

Comprise before the described step b: obtain the pilot frequency intensity of the VoIP business that described application inserts, and the initial channel quality indication when estimating described VoIP service access shared channel according to pilot frequency intensity; VoIP maximum channel quality indication thresholding is set;

Correspondingly, the quality of the described definite channel condition of step b is specially: judge that initial channel quality indicates whether less than VoIP maximum channel quality indication thresholding, if less than, then channel condition is bad; If be not less than, then channel condition is good.

4. method according to claim 1, it is characterized in that, the described channel condition parameter of step b is initial downlink transmitting power and initial channel quality indication, and the channel condition thresholding is minimum down transmitting power thresholding of VoIP and VoIP maximum channel quality indication thresholding;

Comprise before the described step b: obtain the pilot frequency intensity of the VoIP business that described application inserts, and the initial downlink transmitting power when estimating described VoIP service access dedicated channel according to pilot frequency intensity; The minimum down transmitting power thresholding of VoIP is set; Obtain the pilot frequency intensity of the VoIP business that described application inserts, and the initial channel quality indication when estimating described VoIP service access shared channel according to pilot frequency intensity; VoIP maximum channel quality indication thresholding is set;

Correspondingly, the quality of the described definite channel condition of step b is specially: judge whether the initial downlink transmitting power is set up less than VoIP maximum channel quality indication thresholding simultaneously more than or equal to minimum down transmitting power thresholding of VoIP and initial channel quality indication, if set up simultaneously, then channel condition is bad; If be false simultaneously, then channel condition is good; If have only an establishment, then the accuracy of two kinds of judgements thinking according to system determines that channel condition is good or bad.

5. method according to claim 1 is characterized in that,

Comprise before the step b: judge the initial downlink transmitting power is still indicated initial channel quality as the channel condition parameter as the channel condition parameter; If with the initial downlink transmitting power as the channel condition parameter, then with the minimum down transmitting power thresholding of VoIP as the channel condition thresholding; If as the channel condition parameter, then indicate thresholding as the channel condition thresholding VoIP maximum channel quality initial channel quality indication;

Correspondingly, with the initial downlink transmitting power as the channel condition parameter, with the minimum down transmitting power thresholding of VoIP during as the channel condition thresholding, the quality of the described definite channel condition of step b is specially: judge that whether the initial downlink transmitting power is more than or equal to the minimum down transmitting power thresholding of VoIP, if more than or equal to, then channel condition is bad; If less than, then channel condition is good;

Initial channel quality is indicated as the channel condition parameter, when VoIP maximum channel quality is indicated thresholding as the channel condition thresholding, the quality of the described definite channel condition of step b is specially: judge that initial channel quality indicates whether less than VoIP maximum channel quality indication thresholding, if less than, then channel condition is bad; If be not less than, then channel condition is good.

6. method according to claim 1 is characterized in that,

Comprise before the step b: judge and only adopt the judgement of initial downlink transmitting power still only to adopt initial channel quality indication judgement still to adopt judgement of initial downlink transmitting power and initial channel quality indication judgement simultaneously; If only adopt initial downlink transmitting power judgement, then with the initial downlink transmitting power as the channel condition parameter, with the minimum down transmitting power thresholding of VoIP as the channel condition thresholding; If only adopt initial channel quality indication judgement, then initial channel quality is indicated as the channel condition parameter, indicate thresholding as the channel condition thresholding VoIP maximum channel quality; If adopt judgement of initial downlink transmitting power and initial channel quality indication judgement simultaneously, then initial downlink transmitting power and initial channel quality are indicated respectively as the channel condition parameter, indicate thresholding as the channel condition thresholding minimum down transmitting power thresholding of VoIP and VoIP maximum channel quality;

Correspondingly, with the initial downlink transmitting power as the channel condition parameter, with the minimum down transmitting power thresholding of VoIP during as the channel condition thresholding, the quality of the described definite channel condition of step b is specially: judge that whether the initial downlink transmitting power is more than or equal to the minimum down transmitting power thresholding of VoIP, if more than or equal to, then channel condition is bad; If less than, then channel condition is good;

Initial channel quality is indicated as the channel condition parameter, when VoIP maximum channel quality is indicated thresholding as the channel condition thresholding, the quality of the described definite channel condition of step b is specially: judge that initial channel quality indicates whether less than VoIP maximum channel quality indication thresholding, if less than, then channel condition is bad; If be not less than, then channel condition is good;

Initial downlink transmitting power and initial channel quality are indicated respectively as the channel condition parameter, with the minimum down transmitting power thresholding of VoIP and VoIP maximum channel quality indication thresholding during as the channel condition thresholding, the quality of the described definite channel condition of step b is specially: judge whether the initial downlink transmitting power is set up less than VoIP maximum channel quality indication thresholding simultaneously more than or equal to minimum down transmitting power thresholding of VoIP and initial channel quality indication, if set up simultaneously, then channel condition is bad; If be false simultaneously, then channel condition is good; If have only an establishment, then the accuracy of two kinds of judgements thinking according to system determines that channel condition is good or bad.

7. according to claim 5 or 6 described methods, it is characterized in that, the initial downlink transmitting power as the channel condition parameter, during as the channel condition thresholding, is comprised the minimum down transmitting power thresholding of VoIP before the described step b:

Initial downlink transmitting power when the pilot frequency intensity of the VoIP business that inserts according to described application estimates described VoIP service access dedicated channel; The minimum down transmitting power thresholding of VoIP is set.

8. according to claim 5 or 6 described methods, it is characterized in that, the initial channel quality indication as the channel condition parameter, when VoIP maximum channel quality is indicated thresholding as the channel condition thresholding, comprised before the described step b:

Initial channel quality indication when the pilot frequency intensity of the VoIP business that inserts according to described application estimates described VoIP service access shared channel; VoIP maximum channel quality indication thresholding is set.

9. according to each described method in the claim 1 to 6, it is characterized in that, insert the channel or the refusal access that allow to insert described in the step a and be specially:

If dedicated channel access control judgement allows to insert described VoIP business, and shared channel access control judgement refusal inserts described VoIP business, then inserts described VoIP business in dedicated channel; If dedicated channel access control judgement refusal inserts described VoIP business, and shared channel access control judgement allows to insert described VoIP business, then inserts described VoIP business at shared channel; If dedicated channel access control judgement and shared channel access control judgement refusal simultaneously insert described VoIP business, then refusal inserts described VoIP operation system.

10. according to each described method in the claim 1 to 6, it is characterized in that described shared channel is a high-speed downlink packet access channel.

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