WO2010020113A1

WO2010020113A1 - Power control method and apparatus for control channels

Info

Publication number: WO2010020113A1
Application number: PCT/CN2009/000958
Authority: WO
Inventors: 郭保娟; 秦飞; 周海军; 牛纲
Original assignee: 大唐移动通信设备有限公司
Priority date: 2008-08-20
Filing date: 2009-08-20
Publication date: 2010-02-25
Also published as: CN101656558B; CN101656558A

Abstract

A power control method and an apparatus for control channels. The method includes that: a base station detects whether a High-Speed Shared Information Channel (HS-SICH) is received; if the HS-SICH is not received continuously, and the number of times that the HS-SICH is not received continuously is more than a predetermined number of times, the power of a High-Speed Shared Control Channel (HS-SCCH) is remained; otherwise, the power of the HS-SCCH is adjusted.

Description

Control channel power control method and device

The present invention relates to the field of communications technologies, and in particular, to a power control method and apparatus for a control channel. Background technique

HSDPA (High Speed Downlink Package Access) is a data technology based on shared channel transmission. Its main target is high-speed support for packet data services. The data transmission rate in packet data services is very high, and To achieve lower time delays, higher system throughput capacity and more powerful QoS (Quality of Service) guarantees. HSDPA uses HS-DSCH (High Speed Downlink Shared Channel) for data transmission. Multiple UEs share the channel through time division multiplexing and code division multiplexing. Each HS-DSCH can be mapped to one or more. The physical channel is an HS-PDSCH (High-Speed Physical Downlink Shared Channel). In the HSDPA system (that is, the system using the HSDPA technology), in order to implement the fast control of the HS-DSCH, the HS-SCCH (High-Speed Shared Control Channel) is used as the downlink control channel dedicated to the HS-DSCH. Control information carrying the HS-DSCH; HS-SICH (High-Speed Shared Information Channel) is used as an HS-DSCH dedicated uplink control channel for feeding back the downlink quality information and the transport block for the base station. Response. At the same time, there is a pair of accompanying DPCH (Dedicated Physical Channel) for transmitting control information such as RRC (Radio Resource Control) signaling, and also supporting some services. Such as voice services and data services.

In the HSDPA system, the power control function is mainly embodied in the power allocation of the traffic channel HS-PDSCH, the initial power allocation to the downlink control channel HS-SCCH and the uplink control channel HS-SICH, closed loop power control, and open loop power control. The traffic channel HS-PDSCH is not subjected to power control, and the base station adjusts the transmission power according to a certain power allocation policy. Control channel HS-SCCH and HS-SICH Closed loop power control is used in continuous mode and open loop power control is used in discontinuous mode. The initial transmit power of the HS-SCCH is determined by the network side. The closed loop power control of the HS-SCCH is controlled by TPC (Transmit Power Control) information on the HS-SICH channel. The uplink open loop power control of the HS-SICH is obtained by configuring the desired received power on the network side and measuring the path loss on the terminal side. The closed loop power control of the HS-SICH is controlled by the TPC information on the HS-SCCH.

In the power control mode of the above two control channels, if the HS-SCCH is in error, the terminal does not feed back the HS-SICH, and the base station does not adjust the power of the HS-SCCH, but transmits according to the existing power, at this time, in the HS. - The TPC carried in the SCCH is also an invalid value; likewise, if the HS-SCCH is not received, the terminal does not adjust the power of the HS-SICH unless the transmission interval exceeds the threshold for open loop power control; or if received The TPC carried in the HS-SCCH is invalid, and the terminal cannot adjust the HS-SICH power. The above processing method will cause the power of the control channel to be unadjusted and the performance cannot be guaranteed. For example, when the terminal moves all the way away from the base station, the HS-SCCH needs to increase the power if it meets the performance requirements. However, in actual situations, if the HS-SCCH encounters deep delay or other strong interference in a certain transmission and causes the terminal to receive an error, the HS-SICH may not have feedback, or the performance of the HS-SICH may be deteriorated, thereby causing the base station. The HS-SICH feedback is not received, and the base station does not adjust the power of the HS-SCCH, so that the HS-SCCH power remains unchanged. At this time, if the terminal is in a mobile state and is farther away from the base station, the constant HS-SCCH power cannot meet the performance requirements more and more, and the control channel performance is deteriorated, eventually causing an infinite loop. In addition, if the TPC carried in the HS-SCCH received by the terminal is invalid, the HS-SICH power cannot be adjusted, and the control channel power is always not adjusted, so that the system performance cannot be guaranteed. Summary of the invention

Embodiments of the present invention provide a power control method and apparatus for a control channel to improve the performance of a control channel in an HSDPA system, thereby improving the performance of the HSDPA system.

To this end, the embodiments of the present invention provide the following technical solutions:

A power control method for a control channel includes:

The base station detects whether the high speed shared information channel HS-SICH is received; If the HS-SICH is not received continuously, and the number of times the HS-SICH is not received exceeds the predetermined number of times, the power of the high-speed shared control channel HS-SCCH is kept unchanged;

Otherwise, adjust the power of the HS-SCCH.

A power control method for a control channel includes:

The base station detects whether the HS-SICH is received;

If the HS-SICH is received, the TPC parameter value is calculated according to the received HS-SICH, and the calculated TPC parameter value is sent to the terminal when the HS-SCCH is sent next time;

If the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received exceeds the predetermined number of times, the base station assigns the TPC an up, the up indicates that the power is increased by one power step, and the HS is sent next time. -SCCH sends the TPC parameters assigned the up to the terminal.

A power control device for a control channel, comprising:

a detecting unit, configured to detect whether the base station receives the high speed shared information channel HS-SICH;

The power adjustment unit is configured to adjust the power of the HS-SCCH when the detecting unit detects that the base station receives the HS-SICH, or does not continuously receive the HS-SICH, but does not continuously receive the HS-SICH for a predetermined number of times.

A power control device for a control channel, comprising:

a detecting unit, configured to detect whether the base station receives the HS-SICH;

a sending unit, configured to send an HS-SCCH carrying a TPC parameter value to the terminal;

a calculating unit, configured to: when the detecting unit detects that the base station receives the HS-SICH, calculate a TPC parameter value according to the received HS-SICH, and transmit the calculated TPC parameter value to the sending unit; When the detecting unit detects that the base station does not continuously receive the HS-SICH, and does not continuously receive the HS-SICH for more than the predetermined number of times, assigns the value to the TPC, and transmits the value of the assigned TPC to the Sending unit.

The method and device for controlling the power of the control channel according to the embodiment of the present invention, the base station detects whether the HS-SICH is received, and if the number of consecutive HS-SICHs is not received within a predetermined number of times, the corresponding power is given. Controlling the scheme so that the performance of the control channel is not further deteriorated in the case of a certain error probability of the control channel transmission, thereby ensuring the control channel needs Power. DRAWINGS

1 is a flow chart of power control of an HS-SCCH in an embodiment of the present invention;

2 is a flow chart of power control of an HS-SICH in an embodiment of the present invention;

3 is a flowchart of integrated power control for HS-SCCH and HS-SICH in the embodiment of the present invention; FIG. 4 is a schematic structural diagram of a first embodiment of a power control apparatus for a control channel according to the present invention; FIG. FIG. 6 is a schematic structural diagram of a third embodiment of a power control apparatus for a control channel according to the present invention; FIG. detailed description

In the embodiment of the present invention, the HS-SICH is not fed back due to an HS-SCCH error, or the HS-SICH is not received by the base station due to the performance degradation of the HS-SICH itself, and the base station detects whether the HS-SICH is received. And if the number of consecutive HS-SICHs is not received within a predetermined number of times, the corresponding power control scheme is given, so that the performance of the control channel can be ensured without further error in the control channel transmission. Deterioration, thereby ensuring the power required by the control channel.

In the embodiment of the present invention, the power control of the control channels HS-SCCH and HS-SICH may be performed independently or separately.

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , it is a flow control process for the HS-SCCH in the embodiment of the present invention, which mainly includes the following steps:

Step 101: The base station schedules the terminal, sends a control channel HS-SCCH, and sends an HS-PDSCH in a subsequent resource.

Step 102: The base station receives the HS-SICH on the resource allocated to the HS-SICH according to the timing relationship between the HS-SCCH and the HS-SICH; Step 103: If the HS-SICH is received, the power control of the HS-SCCH is controlled according to the TPC carried by the HS-SICH, or the HS-SCCH is reduced by one power step (at this time, the HS-SCCH power is considered sufficient), or to ensure System performance, compare the above two results to a larger value;

Step 104: If the HS-SICH is not received, determine whether the number of consecutive HS-SICHs has not been received exceeds a predetermined number of times N;

Step 105: If the predetermined number of times N is exceeded, the HS-SCCH power is kept unchanged; Step 106, if the predetermined number of times N is not exceeded, the HS-SCCH is increased by one power step, and the step may be pre-configured, for example, Select a step size that is consistent with the closed loop power control step size, or choose a different step size.

In this embodiment, the base station detects whether the high-speed shared information channel HS-SICH is received; if the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received exceeds the predetermined number of times, the high-speed shared control channel HS- The power of the SCCH is unchanged; otherwise, the power of the HS-SCCH is adjusted. Therefore, it is possible to maintain the power required for the control channel while the HS-SICH has no feedback, and to improve the performance of the control channel HS-SCCH, thereby improving the system performance of the HSDPA to some extent. .

Referring to FIG. 2, it is a flow control process for the HS-SICH in the embodiment of the present invention, which mainly includes the following steps:

Step 201: The base station schedules the terminal, sends a control channel HS-SCCH, and sends an HS-PDSCH in a subsequent resource.

Step 202: The base station receives the HS-SICH on the resource allocated to the HS-SICH according to the timing relationship between the HS-SCCH and the HS-SICH.

Step 203: If the HS-SICH is received, the base station calculates the TPC according to the HS-SICH, and transmits the calculated TPC to the terminal through the HS-SCCH in the next scheduling.

The process by which the base station calculates the TPC according to the HS-SICH is, for example: based on the TPC information (ie, the TPC carried by the HS-SICH) filled in by the fixed location of the terminal in the HS-SICH channel structure, and the base station receives the HS-SICH. Then, a corresponding despreading and demodulating process is performed, and the TPC information is extracted from the corresponding position in the HS-SICH channel structure by the despreading and demodulating process. Step 204, if the HS-SICH is not received, it is determined whether the number of consecutive HS-SICHs has not been received exceeds a predetermined number of times N;

Step 205: If the predetermined number of times N is exceeded, the base station assigns an up and down to the TPC, and transmits the assigned TPC to the terminal through the HS-SCCH in the next scheduling.

Step 206: If the predetermined number of times N is not exceeded, the base station assigns an value to the TPC, and transmits the assigned TPC to the terminal through the HS-SCCH in the next scheduling.

In this way, the terminal can adjust the power of the HS-SICH according to the value of the TPC parameter in the received HS-SCCH.

In the embodiment of the present invention, if the base station does not receive the HS-SICH continuously, and the number of consecutively not receiving the HS-SICH exceeds the predetermined number of times, the method is not limited to the method of assigning the TPC in the foregoing step 205, and may also be random. The TPC is assigned the value of up or down, and the assigned TPC is sent to the terminal through the HS-SCCH in the next scheduling; or the TPC is assigned the value of the TPC carried in the previous transmission of the HS-SCCH, and is scheduled next time. The assigned TPC is transmitted to the terminal through the HS-SCCH.

In this embodiment, the base station detects whether the HS-SICH is received; if the HS-SICH is received, calculates the TPC parameter value according to the received HS-SICH, and calculates the calculated TPC parameter value when the HS-SCCH is transmitted next time. Sent to the terminal;

If the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received exceeds the predetermined number of times, the base station assigns the value to the TPC, and assigns the TPC parameter value of the up when the HS-SCCH is transmitted next time. Send to the terminal. Therefore, in the case that the HS-SICH has no feedback, the power required for the control channel can be ensured, thereby improving the performance of the control channel and improving the system performance of the HSDPA to some extent.

In the above two embodiments, the power control methods for the HS-SCCH and the HS-SICH are separately described. In the embodiment of the present invention, if the HS-SICH has no feedback, the error probability may be maintained. Power control of HS-SCCH and HS-SICH to improve the performance of the control channel.

Referring to FIG. 3, it is an integrated power control flow for HS-SCCH and HS-SICH in the embodiment of the present invention. The process mainly includes the following steps:

Step 301: The base station schedules the terminal, sends a control channel HS-SCCH, and sends an HS-PDSCH in a subsequent resource.

Step 302: The base station receives the HS-SICH on the resource allocated to the HS-SICH according to the timing relationship between the HS-SCCH and the HS-SICH;

Step 303: If the HS-SICH is received, the base station calculates the TPC according to the HS-SICH, and transmits the calculated TPC to the terminal through the HS-SCCH in the next scheduling, and adjusts the power of the HS-SCCH in the following manner: The power control of the HS-SCCH is controlled according to the TPC carried by the HS-SICH, or the HS-SCCH P is lower by one power step (the HS-SCCH power is considered sufficient), or to ensure the system performance, the above two results are compared. Take a larger value;

Step 304: If the HS-SICH is not received, determine whether the number of consecutive HS-SICHs has not been received exceeds a predetermined number of times N;

Step 305: If the predetermined number of times N is exceeded, the base station assigns an up and down transition to the TPC, and transmits the assigned TPC to the terminal through the HS-SCCH in the next scheduling, and keeps the HS-SCCH power unchanged;

Step 306: If the predetermined number of times N is not exceeded, the base station assigns the value to the TPC, and transmits the assigned TPC to the terminal through the HS-SCCH in the next scheduling, and adjusts the power of the HS-SCCH in the following manner: HS-SCCH Increase the power step size. The step size can be pre-configured. For example, you can select the step size that is consistent with the closed-loop power control step size, or select another step size.

In this embodiment, the base station detects whether the high-speed shared information channel HS-SICH is received; if the HS-SICH is not continuously received, and the number of consecutive HS-SICHs not received does not exceed the predetermined number of times, the base station assigns a value to the TPC. Up, and increase the HS-SCCH by one power step, and transmit the assigned TPC to the terminal through the adjusted HS-SCCH. Therefore, the power required by the control channel can be ensured while the HS-SICH has no feedback, and the performance of the control channel can be improved, thereby improving the system performance of the HSDPA to some extent.

It should be noted that the up and down mentioned in the foregoing embodiments respectively indicate that the power step is one power step and the power is down. The power step can be matched, and the power step can be selected. A step size with a closed loop step or other closed loop step size.

In each of the above embodiments, the base station may determine whether to receive the method by activating the detection mode.

HS-SICH, if the terminal does not feed back the HS-SICH, the phenomenon detected by the base station is that the received signal power or the signal-to-noise ratio is lower than the predetermined threshold. At this time, it is determined that the base station does not receive the HS-SICH, otherwise the base station is deemed to have received the HS- SICH.

In addition, the following manner may also be used to determine whether the HS-SICH is received: Because the HS-SCCH and the HS-SICH have a corresponding relationship, the base station can know the time at which the HS-SICH can be received subsequently according to the HS-SCCH sent during scheduling. Therefore, the base station may determine, according to the determined error of the HS-SICH information received at the time of receiving the HS-SICH, if the HS-SICH reception is correct, it is considered that the HS-SICH feedback is received, and if the HS-SICH receives the error, It is considered that HS-SICH feedback has not been received.

Of course, the present invention is not limited to the above two methods, and other methods may be used to determine whether the base station receives the HS-SICH, or may be determined in a plurality of manners, for example, using the above two detection modes. It can be completed by hardware related to program instructions, and the program can be stored in a computer readable storage medium, such as: ROM/RAM, magnetic disk, optical disk, and the like.

4 is a schematic structural diagram of a first embodiment of a power control apparatus for a control channel according to the present invention. The power control apparatus of the embodiment includes: a detecting unit 401 and a power adjusting unit 402, wherein the detecting unit 401 is configured to detect whether the base station receives To the high speed shared information channel HS-SICH; the power adjustment unit 402 is configured to detect, at the detecting unit 401, that the base station receives the HS-SICH, or continuously does not receive the HS-SICH, but the number of consecutively not receiving the HS-SICH does not exceed the predetermined number. When the number of times, adjust the power of the HS-SCCH.

In order to further refine the power adjustment of the HS-SCCH to improve the performance of the control channel, the power adjustment unit 402 may further include: a first adjustment subunit 421 and/or a second adjustment subunit 422, where the first adjustment sub The unit 401 is configured to: when the detecting unit 401 detects that the base station receives the HS-SICH, adjust the power of the HS-SCCH according to the received power control TPC parameter in the received HS-SICH, or The HS-SCCH is reduced by one power step, or the value after adjusting the HS-SCCH power according to the received TPC is compared with the value after reducing the HS-SCCH by one power step, and the larger value is taken as the adjusted value. The power of the HS-SCCH; the second adjustment sub-unit 422 is configured to: when the detecting unit 401 detects that the base station has not received the HS-SICH continuously, and the number of consecutive HS-SICHs has not been received does not exceed the predetermined number of times, the HS- SCCH adds a power step.

The detecting unit 401 may further include a comparing subunit or an erroneous judging subunit (none of which is shown) to provide the detecting unit 401 with one or more types of detection. The comparing subunit is configured to determine whether the base station receives the HS-SICH by comparing whether the signal power received by the base station or the signal to noise ratio is lower than a predetermined threshold, if the signal power or the signal to noise ratio received by the base station is lower than Determining a threshold, determining that the base station does not receive the HS-SICH, otherwise determining that the base station receives the HS-SICH; the error determining sub-unit is configured to determine whether the HS-SICH received by the base station at the time of receiving the HS-SICH is incorrect. Whether the base station receives the HS-SICH, if receiving the HS-SICH error, it is determined that the base station does not receive the HS-SICH, otherwise it is determined that the base station receives the HS-SICH.

For a specific implementation process of the power control apparatus of the embodiment of the present invention for power control of the downlink control channel HS-SCCH, refer to the description in the foregoing method embodiment of the present invention, and details are not described herein again.

With the power control apparatus of the embodiment of the present invention, the power required by the control channel HS-SCCH can be ensured even if the HS-SICH has no feedback, and the control channel HS-SCCH is improved. Performance, in turn, improves the system performance of HSDPA to some extent.

Referring to FIG. 5, it is a schematic structural diagram of a second embodiment of a power control apparatus for a control channel according to the present invention. The power control apparatus of this embodiment includes: a detecting unit 501, a transmitting unit 502, a calculating unit 503, and an assigning unit 504. The detecting unit 501 is configured to detect whether the base station receives the HS-SICH, and the sending unit 502 is configured to send the HS-SCCH carrying the TPC parameter value to the terminal. The calculating unit 503 is configured to detect, by the detecting unit 501, that the base station receives the HS-SICH. The TPC parameter value is calculated according to the received HS-SICH, and the calculated value of the TPC is transmitted to the sending unit 502. The determining unit 504 is configured to detect, in the detecting unit 501, that the base station continuously does not receive the HS-SICH, and continuously When the number of times the HS-SICH is not received does not exceed the predetermined number of times, the TPC is assigned the value of up, and the value of the assigned TPC is It is transmitted to the transmitting unit 502.

The detecting unit 501 is the same as the detecting unit 401 in the embodiment shown in FIG. 4, and may detect whether the base station receives the HS-SICH in one or more manners.

Preferably, the evaluation unit 504 is further configured to: when the detecting unit 501 detects that the base station does not continuously receive the HS-SICH, and continuously receives the HS-SICH for more than the predetermined number of times, assigning the TPC an up and down alternate. The value of the assigned TPC is transmitted to the transmitting unit 502.

Preferably, the evaluating unit 504 is further configured to: when the detecting unit 501 detects that the base station continuously does not receive the HS-SICH, and continuously receives the HS-SICH for more than the predetermined number of times, assigning the TPC to the previous sending HS- The value of the TPC carried in the SCCH, and the value of the assigned TPC is transmitted to the transmitting unit 502.

For a specific implementation process of the power control apparatus of the embodiment of the present invention for power control of the uplink control channel HS-SICH, refer to the description in the foregoing method embodiment of the present invention, and details are not described herein again.

By using the power control apparatus of the embodiment of the present invention, the power required by the control channel can be ensured even if the HS-SICH has no feedback, and the performance of the control channel HS-SCCH can be improved. The system performance of HSDPA has been improved to some extent.

In the foregoing two embodiments, the apparatus for performing power control on the HS-SCCH or the HS-SICH is separately described. In the embodiment of the present invention, if the HS-SICH has no feedback, the error may be maintained in a certain error probability. Power control of HS-SCCH and HS-SICH is considered to improve the performance of the control channel.

6 is a schematic structural view of a third embodiment of the power control device of the present invention:

In comparison with the embodiment shown in FIG. 4 and FIG. 5, the power control device includes, in addition to the detecting unit 401 and the power adjusting unit 402, a transmitting unit 502 and an assigning unit 504, and further includes a calculating unit 503. Here, each unit is the same as the corresponding unit shown in Figs. 4 and 5.

The specific implementation process of the power control apparatus of the embodiment of the present invention for the power control of the downlink control channel HS-SCCH and the uplink control channel HS-SICH can be referred to the description in the foregoing method embodiment of the present invention, and details are not described herein again.

With the power control device of this embodiment, there is no feedback in the case where the HS-SICH has no feedback. In the case of error probability, not only the power of the HS-SCCH can be adjusted, but also the TPC parameter value sent to the terminal can be adjusted in time, so that the power of the HS-SICH is controlled, the power required for the control channel is ensured, and the control is improved. The performance of the channel, in turn, improves the system performance of HSDPA to some extent.

The embodiments of the present invention have been described in detail above, and the present invention has been described with reference to the specific embodiments thereof. The description of the above embodiments is only for facilitating understanding of the method and apparatus of the present invention. Meanwhile, for those skilled in the art, In view of the above, the description of the present invention is not limited to the scope of the present invention.

Claims

Rights request

A power control method for a control channel, comprising:

The base station detects whether a high speed shared information channel HS-SICH is received;

If the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received exceeds a predetermined number of times, the power of the high-speed shared control channel HS-SCCH is maintained unchanged;

Otherwise, adjust the power of the HS-SCCH.

2. The method according to claim 1, wherein the adjusting the power of the HS-SCCH comprises:

Upon receiving the HS-SICH, the base station adjusts the power of the HS-SCCH according to the transmission power control TPC parameter value in the received HS-SICH, or reduces the HS-SCCH by one power step, or compares the received TPC parameters. The value after adjusting the HS-SCCH power is lower than the value of reducing the HS-SCCH by one power step, and taking the larger value as the power of the adjusted HS-SCCH; and/or continuously receiving the HS-SICH And, when the number of consecutive HS-SICHs not received exceeds the predetermined number of times, the base station increases the HS-SCCH by one power step.

The method according to claim 2, wherein, when the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received does not exceed the predetermined number of times, the method further includes:

The base station assigns a value to the TPC parameter, the up indicates that the power is up by one power step, and the TPC parameter assigned the value is sent to the terminal when the HS-SCCH is sent next time.

4. The method according to claim 2, wherein, when receiving the HS-SICH, the method further comprises:

The base station calculates the TPC parameter value according to the received HS-SICH, and sends the calculated TPC parameter value to the terminal when the HS-SCCH is sent next time.

The method according to claim 3 or 4, further comprising:

The terminal adjusts the power of the HS-SICH according to the received TPC parameter value in the HS-SCCH.

The method according to any one of claims 1 to 4, characterized in that the base station determines whether the HS-SICH is received by: If the signal power or signal to noise ratio received by the base station is lower than a predetermined threshold, it is determined that the base station does not receive the HS-SICH; or

If the base station receives an HS-SICH error at the time of receiving the HS-SICH, it is determined that the base station has not received the HS-SICH.

A power control method for a control channel, comprising:

The base station detects whether the HS-SICH is received;

If the HS-SICH is not received continuously, and the number of consecutive HS-SICHs is not received exceeds the predetermined number of times, the base station assigns the TPC parameter an up, the up indicates that the power is increased by one power step, and is sent next time. The HS-SCCH sends the TPC parameters assigned the up to the terminal.

8. The method according to claim 7, further comprising:

9. The method according to claim 7, wherein the base station determines whether the HS-SICH is received by:

If the signal power or signal to noise ratio received by the base station is below a predetermined threshold, it is determined that the base station does not receive the HS-SICH; or

The method according to any one of claims 7 to 9, further comprising: if the HS-SICH is not continuously received, and the number of consecutive HS-SICHs not received exceeds the predetermined number of times, The TPC parameter is assigned the value of up and d own, and the down indicates that the power is down by one power step, and the assigned TPC parameter is sent to the terminal through the HS-SCCH in the next scheduling.

The method according to any one of claims 7 to 9, further comprising: if the HS-SICH is not continuously received, and the number of consecutive HS-SICHs not received exceeds the predetermined number of times, then random Assign the TPC parameter to up or down, and the down indicates that the power is down. The power step is transmitted, and the assigned TPC parameters are sent to the terminal through the HS-SCCH at the next scheduling.

The method according to any one of claims 7 to 9, further comprising: if the HS-SICH is not continuously received, and the number of consecutive HS-SICHs not received exceeds the predetermined number of times, The TPC parameter assignment is the TPC parameter carried when the HS-SCCH was sent the previous time.

13. A power control device for a control channel, comprising:

The device according to claim 13, wherein the power adjustment unit comprises:

a first adjusting subunit, configured to: when the detecting unit detects that the base station receives the HS-SICH, adjust the power of the HS-SCCH according to the TPC parameter value in the received HS-SICH, or reduce the HS-SCCH by one power step Or, compare the value after adjusting the HS-SCCH power according to the received TPC parameter value with the value of reducing the HS-SCCH by one power step, and take the larger value as the power of the adjusted HS-SCCH; and / Or

And a second adjusting subunit, configured to increase the HS-SCCH by one power step when the detecting unit detects that the base station does not continuously receive the HS-SICH, and the number of consecutive HS-SICHs is not received exceeds the predetermined number of times.

The device according to claim 13 or 14, further comprising: a sending unit, configured to send an HS-SCCH carrying a TPC parameter value to the terminal;

An evaluation unit, configured to: when the detecting unit detects that the base station does not receive the HS-SICH continuously, and the number of consecutively not receiving the HS-SICH does not exceed the predetermined number of times, assigning the TPC parameter an up, the up indicating the upward adjustment power a power step and transmitting the assigned TPC parameters to the transmitting unit.

The device according to claim 15, further comprising:

And a calculating unit, configured to: when the detecting unit detects that the base station receives the HS-SICH, calculate a TPC parameter value according to the received HS-SICH, and transmit the calculated TPC parameter value to the sending unit.

17. Apparatus according to claim 13 or claim 14 wherein said detecting unit comprises:

a comparing subunit, configured to determine whether the base station receives the HS-SICH by comparing whether the signal power received by the base station or the signal to noise ratio is lower than a predetermined threshold; or

The error judging subunit is configured to determine whether the base station receives the HS-SICH by determining whether the base station receives the HS-SICH error at the time of receiving the HS-SICH.

18. A power control device for a control channel, comprising:

a calculating unit, configured to: when the detecting unit detects that the base station receives the HS-SICH, according to the received

The HS-SICH calculates a TPC parameter value, and transmits the calculated TPC parameter value to the sending unit; the determining unit is configured to detect, in the detecting unit, that the base station continuously does not receive the HS-SICH, and continuously receives the HS-SICH When the number of times does not exceed the predetermined number of times, the TPC parameter is assigned an up value, and the TPC parameter assigned the up is transmitted to the transmitting unit.

The device according to claim 18, wherein the detecting unit comprises: a comparing subunit, configured to determine whether the base station receives the signal power or the signal to noise ratio received by the base station is lower than a predetermined threshold. HS-SICH; or

The error judging subunit is configured to determine whether the base station does not receive the HS-SICH by determining whether the base station receives the HS-SICH at the time of receiving the HS-SICH.

20. Apparatus according to claim 18 or 19, wherein

The determining unit is further configured to: when the detecting unit detects that the base station does not continuously receive the HS-SICH, and continuously receives the HS-SICH for more than the predetermined number of times, assigning the TPC parameters to up and down alternately, Up means that the power is up by one power step, the down means that the power is down by one power step, and the assigned TPC parameter is transmitted to the sending unit.

The apparatus according to claim 18 or 19, wherein the determining unit is further configured to: when the detecting unit detects that the base station has not received the HS-SICH continuously, and the number of consecutively not receiving the HS-SICH exceeds When the predetermined number of times is described, the TPC parameter is assigned a value of the TPC parameter carried when the HS-SCCH was previously transmitted, and the assigned TPC parameter is transmitted to the transmitting unit.