CN102246567A - Method, apparatus and radio network controller for outer loop power control processing - Google Patents

Abstract

An embodiment of the present invention provides an outer loop power control processing method, device, and radio network controller, the method including: if the transmit power of the terminal is limited, adjusting the value of the maximum DPCCH SIR target value from A to B, the B is greater than or equal to the value of the initial DPCCH SIR target value, and the B is smaller than the A; and the adjusted maximum DPCCH SIR target value is sent to the base station. In the embodiment of the present invention, when the transmission power of the terminal is limited, the maximum DPCCH SIR target value is reduced to the initial DPCCHSIR target value, which can reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel is reduced, so that the data channel can be improved. The power ratio allows the data transmission to continue and increase the cell coverage.

Description

Outer loop power control processing method, device and wireless network controller

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to an outer loop power control processing method, device, and wireless network controller.

Background technique

CDMA (Code Divided Multiple Access) is a spread spectrum communication technology. The CDMA system is a self-disturbing system, all mobile users occupy the same bandwidth and frequency, and there are non-ideal correlation characteristics between the spreading codes used by each user. For example, the "near and far effect" problem is particularly prominent, so the size of the user's transmit power will directly affect the total capacity of the system, thus making power control technology one of the most important core technologies in the CDMA system. Among them, the near-far effect is: when the base station simultaneously receives signals from two terminals (User Equipment, referred to as: UE) with different distances but the same power, the UE that is closer to the base station will have a serious impact on the signal of the other UE. interference.

One of the goals of power control in a CDMA system is to make the transmit power of the UE as small as possible on the premise of ensuring the communication quality of the user. By making the transmit power of the UE as small as possible, the interference can be reduced, thereby increasing the capacity of the CDMA system.

Power control can be divided into uplink power control and downlink power control according to direction; uplink power control can control UE transmit power, and downlink power control can control base station transmit power. Power control can be divided into open-loop power control and closed-loop power control according to whether UE and base station (NodeB) participate at the same time. What UE and NodeB participate in at the same time is closed-loop power control. The closed-loop power control is used to overcome path loss, fast fading and slow fading; the closed-loop power control uses the DPCCH (Dedicated Physical Control Channel, Dedicated Physical Control Channel) signal interference ratio (Signal Interference Ratio, referred to as: SIR) measurement estimate and DPCCH signal The comparison of the interference ratio target value (SIR _target ) determines the transmit power control (Transmit Power Control, TPC) command word, and then transmits the TPC command word to the UE through the channel, and the UE adjusts its transmit power according to the TPC command word.

Closed-loop power control can be divided into inner-loop power control and outer-loop power control; the mechanism of Outer Loop Power Control (OLPC) is to adjust the target value of the inner-loop control according to the quality of communication so that the system can always Use the minimum power to meet the requirements of communication quality. FIG. 1 is a schematic diagram of existing uplink power control. As shown in Figure 1, in the uplink power control process, the power control between NodeB and UE is inner loop power control, and the power control between RNC (Radio Network Controller, radio network controller) and NodeB is outer loop power control .

However, during the outer loop power control process, when the transmit power of the UE is limited, the SIR target value of the DPCCH will always increase, which will cause the data channel power to drop too much, and finally lead to poor cell coverage.

Contents of the invention

Embodiments of the present invention provide an outer loop power control processing method, device and radio network controller, so as to increase cell coverage through outer loop power control.

An embodiment of the present invention provides an outer loop power control processing method, including:

When the transmission power of the terminal is limited, the value of the maximum DPCCH SIR target value is adjusted from A to B, and the B is greater than or equal to the value of the initial DPCCH SIR target value, and the B is less than the A;

Send the adjusted maximum DPCCH SIR target value to the base station.

An embodiment of the present invention provides an outer loop power control processing device, including:

The first adjustment module is used to adjust the value of the maximum DPCCH SIR target value from A to B when the transmit power of the terminal is limited, and the B is greater than or equal to the value of the initial DPCCH SIR target value, and the B is less than the set value State A;

A sending module, configured to send the maximum DPCCH SIR target value adjusted by the first adjusting module to the base station.

An embodiment of the present invention provides a radio network controller, including any outer loop power control processing device provided in the embodiments of the present invention.

In the outer loop power control processing method, device, and radio network controller of the embodiments of the present invention, the radio network controller adjusts the value of the maximum DPCCH SIR target value when determining that the transmit power of the UE is limited, and changes the value of the maximum DPCCH SIR target value to Decrease, and send the adjusted maximum DPCCH SIR target value to the base station. In the embodiment of the present invention, when the transmission power of the UE is limited, the maximum DPCCH SIR target value is reduced to the initial DPCCH SIR target value, which can reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel is reduced, thereby improving the data rate. The power ratio of the channel allows data transmission to continue and increases cell coverage.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of existing uplink power control;

FIG. 2 is a flowchart of an outer loop power control processing method provided by an embodiment of the present invention;

FIG. 3 is a flowchart of an outer loop power control processing method provided by another embodiment of the present invention;

FIG. 4 is a flow chart of an outer loop power control processing method provided by another embodiment of the present invention;

FIG. 5 is a schematic diagram of an outer loop power control processing device provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of an outer loop power control processing device provided by another embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

The parameters involved in the outer loop power control mechanism include: initial DPCCH SIR target value, maximum DPCCH SIR target value and minimum DPCCH SIR target value. Among them, the initial DPCCH SIR target value is set according to the typical environment, for example, when the RL (Radio Link, wireless link) is set up or reconfigured, it is configured to the NodeB by the RNC; the maximum DPCCH SIR target value is the DPCCH SIR target value can be adjusted to The maximum value is used to prevent the DPCCH SIR target value from being abnormally adjusted to a large value, causing the power occupation of the DPCCH channel to be too large and affecting data transmission; the minimum DPCCH SIR target value is the minimum value that the DPCCH SIR target value can be adjusted to. It is used to prevent the DPCCH SIR target value from being adjusted to a very small value. If the DPCCH SIR target value is abnormally adjusted to a small value, it is easy to cause problems such as call drop.

The inventors have found that in the outer loop power control process, when the transmit power of the UE is limited, the SIR target value of the DPCCH will always be raised to the maximum DPCCH SIR target value. Since the maximum DPCCHSIR target value is usually larger, it will cause data The channel power drops too much, which eventually leads to poor cell coverage.

Fig. 2 is a flowchart of an outer loop power control processing method provided by an embodiment of the present invention. As shown in Fig. 2, the method includes:

Step 201, when the transmit power of the UE is limited, adjust the value of the maximum DPCCH SIR target value from A to B. Wherein, B is greater than or equal to the value of the initial DPCCH SIR target value, and B is less than A.

The subject of execution of this embodiment may be the RNC or other network control devices.

When the transmit power of the UE is limited, the UE can report to the base station or RNC. When the base station receives the report from the UE, the base station may report the UE's limited transmit power to the RNC. In this way, the RNC can obtain whether the transmit power of the UE is limited. Wherein, when the transmit power of the UE reaches the upper limit value of the transmit power within a preset time, the transmit power of the UE is limited.

When the RNC determines that the transmit power of the UE is limited, the RNC lowers the maximum DPCCH SIR target value, and adjusts the value of the maximum DPCCH SIR target value to a value greater than or equal to the initial DPCCH SIR target value. It can be understood that the adjustment The latter value is smaller than the value A of the original maximum DPCCH SIR target value.

Step 202: Send the adjusted maximum DPCCH SIR target value to the base station, so that the base station performs inner-loop power control according to the adjusted maximum DPCCH SIR target value.

In the embodiment of the present invention, when the transmit power of the UE is limited, the maximum DPCCH SIR target value is reduced, which can reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel can be reduced, thereby increasing the power ratio of the data channel, so that data transmission can be achieved Go ahead and increase the cell coverage.

In another embodiment, the situation when the transmission power of HSUPA (High Speed Uplink Packet Access, High Speed Uplink Packet Access) users and R99 users is limited is described as an example, and the numerical value of the maximum DPCCH SIR target value is adjusted A value equal to the initial DPCCH SIR target value is illustrated as an example. It can be understood that when the value of the maximum DPCCH SIR target value is reduced to other values, the power ratio of the data channel can also be increased, so that data transmission can continue when the UE transmit power is limited, and the cell coverage can be increased.

When the transmit power of the HSUPA user is limited, and the UE (the HSUPA user) has no remaining transmit power, the data block corresponding to the E-TFCI (E-DCH Transport Format Combination Indicator, enhanced dedicated channel transport format combination indicator) selected by the UE will be reduced. If the minimum value of the E-TFCI is configured for the UE, the E-TFCI selected by the UE will not decrease after the transmit power is limited to the minimum value configured. It can be understood that the E-TFCI is used to indicate the size of the corresponding data block, and a larger data block requires higher transmission power. If the UE's transmit power continues to be limited after the E-TFCI selected by the UE is reduced to the configured minimum value, and the UE's total transmit power (transmit power of all channels) exceeds the maximum transmit power when the E-TFCI is selected, then The UE will reduce the βed/βc (data channel gain factor) corresponding to the E-TFCI, that is, reduce the EDPDCH (Enhanced Dedicated Physical Data Channel, enhanced dedicated physical data channel) PO (power Offset, power offset); and the reduction of EDPDCH PO Small will lead to HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) retransmission times (Number of HARQ Retransmission, referred to as: NHR) become larger, NHR larger will lead to larger DPCCH SIR target value, DPCCH SIR target value will become larger As a result, the DPCCH transmission power increases, and the DPCCH transmission power increases, which in turn leads to a decrease in the EDPDCH PO, thus forming a vicious circle. And when the target NHR is smaller than the average value of the actual NHR, the DPCCH SIR target value has the characteristics of fast rise and slow fall, and will soon rise to the maximum DPCCH SIR target value, then the maximum DPCCH SIR target value is 14dB. When the maximum DPCCH SIR target value is set to the initial DPCCH SIR target value (generally 8dB), the EDPDCH PO is more likely to become zero (because the EDPCCH PO is unchanged, the HS-DPCCH PO is unchanged, and the total transmit power is unchanged), and the data transmission is more stable. Easy to terminate, easier to drop calls. However, setting the maximum DPCCH SIR target value as the initial DPCCH SIR target value (for example, 8dB), relatively speaking, can reduce the occupation ratio of DPCCH in the total transmit power of the UE, increase the power ratio of the data channel, and continue data transmission. , the coverage is enhanced, which will bring a larger gain. Once the user's transmit power changes from limited to unlimited, then the maximum DPCCH SIR target value is restored (for example, 11dB or 14dB). It can be understood that the value range of the maximum DPCCH SIR target value can refer to the provisions of the agreement . Thus, when the user's transmit power is limited, the user's maximum DPCCH SIR target value is reduced, for example, set as the initial DPCCH SIR target value (for example, 8dB), which can improve user throughput and increase cell coverage. Among them, the maximum DPCCH SIR target value and the initial DPCCH SIR target value range from -8.2 to 17.3dB (see protocol 25.214), and the maximum DPCCH SIR target value is greater than the initial DPCCHSIR target value. The specific value can be configured according to the actual situation .

When the transmit power of R99 users is limited, the block error rate (Block Error Rate, BLER for short) of data transmission will increase, and OLPC will increase the DPCCH SIR target value, and when the target BLER is small, the DPCCH SIR target value has The characteristics of fast rise and slow fall will soon rise to the maximum DPCCH SIR target value, so the maximum DPCCH SIR target value is the initial DPCCH SIR target value plus a preset value (for example, 3dB, you can refer to the regulations in the prior art) Compared with the case where the maximum DPCCH SIR target value is set to the initial DPCCH SIR target value, the transmit power occupied by the DPCCH is larger, which will reduce the available power of the DPDCH, making it easier to terminate data transmission and drop calls. When the maximum DPCCH SIR target value is set as the initial DPCCH SIR target value, relatively speaking, it can reduce the occupation ratio of DPCCH in the total UE transmit power, increase the power ratio of data channels, improve user throughput, and increase cell capacity. And once the user's transmit power changes from limited to unlimited, then restore the maximum DPCCH SIR target value.

In the embodiment of the present invention, when the RNC determines that the transmission power of the UE is limited, the value of the maximum DPCCH SIR target value is adjusted, the value of the maximum DPCCH SIR target value is reduced, and the adjusted maximum DPCCH SIR target value is sent to the base station. In the embodiment of the present invention, when the transmission power of the UE is limited, the maximum DPCCH SIR target value is reduced to reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel is reduced, thereby increasing the power ratio of the data channel, so that Data transmission is continued and cell coverage is increased.

Fig. 3 is a flowchart of an outer loop power control processing method provided by another embodiment of the present invention. As shown in Fig. 3, the method includes:

Step 301. When the RNC acquires that the transmit power of the UE is limited, the RNC adjusts the value of the maximum DPCCH SIR target value from A to B, and sends the adjusted maximum DPCCH SIR target value to the base station. Wherein, B is greater than or equal to the value of the initial DPCCH SIR target value, and B is less than A.

The execution subject of this embodiment may be the RNC. Wherein, the way for the RNC to obtain whether the transmit power of the UE is limited may include:

The first manner: if the RNC receives the first restricted message reported by the UE, the RNC acquires that the transmit power of the UE is restricted. Specifically, when the transmit power of the UE is limited, the UE will report a limited message to the base station or the RNC. When the UE reports a limited message to the base station, the base station may report the UE's power limited situation to the RNC. For example: when the transmit power measured by the UE is higher than a threshold (the threshold is the upper limit of the transmit power) for a period of time, a 6A event will be reported to the RNC to indicate that the current power of the UE is limited. When the transmit power measured by the UE is lower than a threshold for a period of time, a 6B event will be reported to the RNC, indicating that the current power of the UE is not limited (see protocol 25.331).

The second manner: if the RNC receives the second restriction message reported by the base station and used to indicate that the UE's transmit power is limited, the RNC acquires the UE's limited transmit power. For example: the base station obtains the current remaining transmission power of the UE according to the measured value of UPH (UE transmission Power Headroom, available space for UE transmission power) reported by the UE, and then compares the current remaining transmission power of the UE with the maximum transmission power to obtain the UE The transmit power currently used, and then compare the transmit power currently used by the UE with the predetermined power threshold, if the transmit power is greater than the upper limit of the predetermined power threshold or the transmit power is less than the lower limit of the predetermined power threshold, then you can It is obtained that the transmit power of the UE is limited; if the base station obtains that the transmit power of the UE is limited, the base station reports to the RNC through a second limited message.

Step 302, after adjusting the value of the maximum DPCCH SIR target value from A to B, when the transmit power of the UE is not limited, the RNC adjusts the value of the maximum DPCCH SIR target value to A, and the adjusted maximum DPCCH SIR The target value is sent to the base station.

After the RNC adjusts the value of the maximum DPCCH SIR target value in step 301, if the RNC acquires that the transmit power of the UE returns to normal, that is, the RNC determines that the transmit power of the UE is not limited, then the RNC restores the maximum DPCCH SIR target value and restores the maximum DPCCH SIR target value. The maximum DPCCH SIR target value is sent to the base station, so that the base station performs inner loop power control according to the restored maximum DPCCH SIR target value. It should be noted that when the RNC determines that the transmit power of the UE is not limited and restores the maximum DPCCH SIR target value, the maximum DPCCH SIR target value can be adjusted to A, or a new value such as C can be obtained according to the channel environment, and then Adjust the maximum DPCCH SIR target value to C; where C is greater than B.

In addition, in the existing outer loop power control process, in the process of the QoS (Quality of Service, service quality) parameter converging on the target value, in order to avoid large time delay caused by error blocks or to avoid low convergence success rate, usually Both set a higher DPCCH SIR target value, resulting in a waste of power resources. However, in order to improve the utilization rate of power resources in this embodiment, the time for a higher DPCCH SIR target value can be reduced as much as possible after the QoS parameter converges to the target value. Therefore, this embodiment may also include the following steps:

Step 303, after the QoS parameter converges to the target value, adjust the DPCCH SIR target value according to the first step until the DPCCH SIR target value drops to the preset threshold value.

Specifically, the convergence of the QoS parameters to the target value may occur when the radio bearer (Radio Bearer, referred to as: RB) is established. Examples are not limited. That is to say, when the RB is established, the QoS parameters converge to the target value, and the DPCCH SIR target value is adjusted according to the length of the first step.

Among them, the QoS parameters include: BLER, bit error rate (Bit Error Rate, referred to as: BER), frame error rate (Fame Error Rate, referred to as: FER) or NHR. Parameters such as BLER, bit error rate or frame error rate can be applied to the R99 (a protocol version) system; NHR can be applied to the HSUPA system.

In this step, after the QoS parameters converge to the target value, the RNC reduces the current DPCCH SIR target value with a relatively large step size, so that the current DPCCH SIR target value is reduced quickly until the DPCCH SIR target value is dropped to a preset threshold value. Wherein, the preset threshold value may be the average value of the DPCCH SIR target value when the channel environment is good. Therefore, power efficiency and throughput can be improved, and power resource utilization can be improved.

Step 304, after the DPCCH SIR target value drops to the preset threshold value, adjust the first step size to the second step size. The length of the first step is greater than the length of the second step.

After the RNC drops the DPCCH SIR target value to the preset threshold value, the RNC adjusts the step size of the DPCCH SIR target value to the second step size, wherein the second step size is smaller than the first step size, that is, shortens the DPCCH The step size for decreasing the SIR target value makes the decreasing speed of the DPCCH SIR target value slower. When the RNC lowers the DPCCH SIR target value, the RNC periodically sends the DPCCHSIR target value to the base station, wherein the cycle is a preset cycle.

Among them, in the outer loop power control, the RNC can determine the DPCCHSIR target value according to the quality of service (QoS), so that the base station adjusts the inner loop control according to the DPCCH SIR target value, so that the UE can always use the minimum power to meet the communication quality requirements . The QoS may include: BLER, bit error rate or frame error rate of received signals. For example, the formula for the RNC to calculate the adjustment amount of the DPCCH SIR target value according to the BLER measurement value is:

Thus, when the decreasing step size (SIR adjustment step size) is increased, the DPCCH SIR target value will decrease faster. The specific data of the first step length and the second step length can be configured according to specific situations.

In the embodiment of the present invention, in addition to the beneficial effects of the embodiment shown in Figure 2, after the QoS parameter converges to the target value, the time for a higher DPCCH SIR target value can be reduced as much as possible by increasing the step size of the decline, by This can improve power efficiency and throughput.

In the existing outer loop power control process, when the RNC receives an error block, it will increase the DPCCHSIR target value, thus, when continuous error blocks occur due to severe interference, the DPCCH SIR target value will climb, resulting in Waste of power resources. In order to solve this problem, the embodiment of the present invention provides the solution shown in FIG. 4 .

Fig. 4 is a flow chart of the outer loop power control processing method provided by another embodiment of the present invention. As shown in Fig. 4, this embodiment may further include the following steps on the basis of the embodiment shown in Fig. 2 or Fig. 3:

Step 401, when the RNC receives the error block reporting message reported by the base station at time t, which is used to indicate the kth error block sent by the UE, the RNC adjusts the DPCCH SIR target value. It can be understood that the adjusted DPCCH SIR target value is sent to the base station according to the preset cycle, and how the DPCCHSIR target value is sent to the base station can follow the provisions of the agreement, and the present invention does not further limit this.

Step 402, within a preset period of time after the time t, if the RNC receives the error block report message reported by the base station and is used to indicate the k+mth error block sent by the UE, then keep the DPCCH SIR target value unchanged; Wherein, m is a constant greater than or equal to 1, and m is configurable. That is, within the preset time period after time t, even if the RNC receives the error block report message reported by the base station and is used to indicate the k+mth error block sent by the UE, it will not adjust the DPCCH SIR target value, but Keep the DPCCH SIR target value unchanged.

Specifically, steps 401-402 may be: when an error block is received at a certain moment t, the RNC increases the DPCCH SIR target value, and within a preset time period after the moment t, if an error block is received again block, it indicates that serious interference occurs in the system. At this time, the RNC will not adjust the DPCCH SIR target value; after the preset time period, if an error block is received again, it is not considered that the system has serious interference at this time, so at this time Then the DPCCH SIR target value can be adjusted.

In addition to the beneficial effects of the embodiment shown in Figure 2, the embodiment of the present invention can also not adjust the DPCCH SIR target value when error blocks are continuously received due to severe interference, thereby improving the utilization rate of power resources.

FIG. 5 is a schematic diagram of an outer loop power control processing device provided by an embodiment of the present invention. As shown in FIG. 5 , the device includes: a first adjustment module 51 and a sending module 53 .

The first adjustment module 51 is used to adjust the value of the maximum DPCCH SIR target value from A to B when the transmit power of the terminal is limited, and B is greater than or equal to the value of the initial DPCCH SIR target value, and B is less than A.

The sending module 53 is configured to send the maximum DPCCH SIR target value adjusted by the first adjusting module 51 to the base station.

The outer loop power control processing device provided in this embodiment is used to implement the method embodiment shown in FIG. 2 . For the working process and working principle of each module in this embodiment, refer to the description in the method embodiment shown in FIG. 2 above, and will not be repeated here.

In the embodiment of the present invention, the first adjustment module adjusts the numerical value of the maximum DPCCH SIR target value when determining that the transmission power of the UE is limited, reduces the numerical value of the maximum DPCCH SIR target value, and the adjusted maximum DPCCH SIR target value is adjusted by the sending module The value is sent to the base station. In the embodiment of the present invention, when the transmission power of the UE is limited, the maximum DPCCH SIR target value is reduced to reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel is reduced, thereby increasing the power ratio of the data channel, so that Data transmission is continued and cell coverage is increased.

FIG. 6 is a schematic diagram of an outer loop power control processing device according to another embodiment of the present invention. On the basis of the embodiment shown in FIG. 5 , as shown in FIG. 6 , the device may further include: a second adjustment module 55 .

Further, the device may further include: a first step adjustment module 57 and a second step adjustment module 59; or, the device may further include: a third adjustment module 50 and a holding module 52.

The second adjustment module 55 is used to adjust the numerical value of the maximum DPCCH SIR target value to A after the numerical value of the maximum DPCCH SIR target value is adjusted from A to B by the first adjustment module 51 when the transmission power of the terminal is not limited. And send the adjusted maximum DPCCH SIR target value to the base station.

The first step length adjustment module 57 is used to adjust the DPCCH SIR target value according to the first step length after the QoS parameter converges to the target value until the DPCCH SIR target value drops to a preset threshold value.

The second step size adjustment module 59 is used to adjust the DPCCH SIR target value with the second step size after the DPCCH SIR target value is adjusted to the preset threshold value by the first step size adjustment module 57; the first step is longer than the second step long.

The third adjustment module 50 is configured to adjust the DPCCH SIR target value when receiving an error block report message reported by the base station at time t and used to indicate the kth error block sent by the terminal.

The holding module 52 is used to keep the DPCCH SIR target value unchanged if a block error reporting message indicating the k+m block error block sent by the terminal is received within a preset period of time after the time t. ; Among them, m is a constant greater than or equal to 1.

The outer loop power control processing device provided in this embodiment is used to implement the method embodiments shown in FIGS. 2-4 . For the working process and working principle of each module in this embodiment, refer to the descriptions in the method embodiments shown in FIGS. 2-4 above, and will not be repeated here.

In the embodiment of the present invention, in addition to the beneficial effects of the embodiment shown in FIG. 5 , after the QoS parameter converges to the target value, the first step length adjustment module can increase the step size of the decline to minimize the higher DPCCH SIR The time of the target value can improve the power efficiency and throughput; and when the block error is continuously received due to severe interference, the DPCCHSIR target value can be stopped by stopping the adjustment module, thereby improving the utilization rate of power resources.

An embodiment of the present invention also provides a radio network controller, where the radio network controller includes the outer loop power control processing device shown in FIG. 5 or FIG. 6 .

For the working process and working principle of each module in this embodiment, refer to the descriptions in the method embodiments shown in FIGS. 2-4 above, and will not be repeated here.

In the embodiment of the present invention, when the transmission power of the UE is limited, the radio network controller reduces the maximum DPCCHSIR target value, which can reduce the dynamic range of the DPCCH SIR, so that the power ratio of the control channel is reduced, thereby increasing the power ratio of the data channel. , so that data transmission can continue and cell coverage is increased; the radio network controller can also reduce the time of a higher DPCCH SIR target value as much as possible by increasing the step size of the decline after the QoS parameters converge to the target value, thus Power efficiency and throughput can be improved; and the radio network controller can also improve the utilization rate of power resources by not adjusting the DPCCH SIR target value when receiving block errors continuously due to severe interference.

It should be noted that the various embodiments of the present invention can be applied to a CDMA system or a WCDMA system to control uplink power. Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (11)

1. an exterior ring power control and treatment method is characterized in that, comprising:

When the transmit power limited of terminal, the numerical value of maximum special used for physical control channel DPCCH signal interference ratio sir target value is adjusted into B by A, described B is more than or equal to the numerical value of initial DPCCH sir target value, and described B is less than described A;

Adjusted maximum DPCCH sir target value is sent to the base station.

2. method according to claim 1 is characterized in that, also comprises:

After the numerical value with described maximum DPCCH sir target value is adjusted into described B by described A, when the transmitting power of described terminal is not limited, the numerical value of described maximum DPCCH sir target value is adjusted into described A, and adjusted maximum DPCCH sir target value is sent to described base station.

3. method according to claim 1 and 2 is characterized in that, also comprises:

When service quality QoS parameter converges on desired value, adjust DPCCH sir target value according to first step-length, drop to predetermined threshold value until described DPCCH sir target value;

After described DPCCH sir target value drops to predetermined threshold value, adjust described DPCCH sir target value with second step-length, the described first step is grown up in described second step-length.

4. method according to claim 3 is characterized in that, described qos parameter converges on desired value and comprises: radio bearer is set up and is finished.

5. method according to claim 3 is characterized in that, described qos parameter comprises: Block Error Rate, the error rate, frame error rate or mix automatic repeat requests HARQ number of retransmissions.

6. according to each described method among the claim 1-5, it is characterized in that, also comprise:

Moment t receive that described base station reports, when being used to represent described terminal sends k mistake piece reporting message that misses piece, adjust described DPCCH sir target value;

In the Preset Time section after described moment t, if receive k+m that described base station reports, as to be used to represent described terminal transmission mistake piece reporting message that misses piece, keep described DPCCH sir target value constant, wherein, m is the constant more than or equal to 1.

7. an exterior ring power control and treatment device is characterized in that, comprising:

First adjusting module when being used for the transmit power limited when terminal, is adjusted into B with the numerical value of maximum special used for physical control channel DPCCH signal interference ratio sir target value by A, and described B is more than or equal to the numerical value of initial DPCCH sir target value, and described B is less than described A;

Sending module is used for the described maximum DPCCH sir target value of the described first adjusting module adjustment is sent to the base station.

8. device according to claim 7 is characterized in that, also comprises:

Second adjusting module, be used for after described first adjusting module is adjusted into described B with the numerical value of described maximum DPCCH sir target value by described A, when the transmitting power of described terminal is not limited, the numerical value of described maximum DPCCH sir target value is adjusted into described A, and adjusted maximum DPCCHSIR desired value is sent to described base station.

9. according to claim 7 or 8 described devices, it is characterized in that, also comprise:

The first step-length adjusting module is used for after service quality QoS parameter converges on desired value, adjusts DPCCH sir target value according to first step-length, drops to predetermined threshold value until described DPCCH sir target value;

The second step-length adjusting module is used for adjusting described DPCCH sir target value with second step-length after the described first step-length adjusting module drops to predetermined threshold value with described DPCCH sir target value, and the described first step is grown up in described second step-length.

10. according to each described device among the claim 7-9, it is characterized in that, also comprise:

The 3rd adjusting module, be used for moment t receive that described base station reports, when being used to represent described terminal sends k mistake piece reporting message that misses piece, adjust described DPCCH sir target value;

Keep module, be used in the Preset Time section after described moment t,, keep described DPCCH sir target value constant if receive k+m that described base station reports, as to be used to represent described terminal transmission mistake piece reporting message that misses piece, wherein, m is the constant more than or equal to 1.

11. a radio network controller comprises each described exterior ring power control and treatment device as claim 7-10.

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