CN101154968B - Method and apparatus for descending time slot power control of multi-carrier wave subdistrict - Google Patents

Abstract

The present invention discloses a method for controlling the downward time interval power of the multiple-carrier wave cell and the device, to settle the problem that the coverage of the common physical channel is different from the coverage of the business physical channel in the TD-SCDMA system, in the method the transmitting power of all common physical channels of the zero time slot and the transmitting power of the downward pilot channel of the downward frequency-guiding time slot are arranged a the side of the network, wherein, the sum of the transmitting power of all the common physical channels of the zero time slot and the transmitting power of the downward pilot channel are all no more than the maximum downward transmitting power; RNC judges whether the sum of the transmitting power of all common physical channels of the zero time slot and the transmitting power of the downward pilot channel are not more than the actual maximum downward transmitting power in the resource state indicating information when the RNC receives the resource state indicating information which is reported by the base station, the cell is allowed to establish if the answer is affirmative, or else, the device informs to operate and maintain the malfunction of the equipment antenna; the coverage of the common physical channel is increased with the invention.

Description

A kind of method and device of multi-carrier district descending time slot power control

Technical field

The present invention relates to the TD-SCDMA system of the communications field, particularly the method and the device of the control of multi-carrier district descending time slot power.

Background technology

The existing time-division synchronously-frame structure that code division multiple access inserts (TD-SCDMA, Time Division SynchronousCDMA) system as shown in Figure 1, each wireless sub-frame is made of 7 common time slots and 3 special time slots; Wherein, common time slot (Time Slot, TS0～TS6) is used for transmitting data, wherein, zero time slot TS0 is regularly as descending time slot, the TS1 time slot is regularly as ascending time slot, and other common time slot can be configured to ascending time slot or descending time slot as required neatly to realize the transmission of asymmetric traffic; 3 special time slots are respectively descending pilot frequency time slot (DwPTS, Downlink Pilot Time Slot), are used for the transmission of the down-going synchronous information of system; Ascending pilot channel (UpPTS, Uplink Pilot TimeSlot) is used for the transmission of the uplink synchronous information of user's access; Protection time slot (GP, Guard Period) is used to provide the change-over time interval of descending sending time slots to up sending time slots.

At present, in order to reduce the interference of Traffic Channel, that the TS0 time slot and the descending pilot frequency time slot DwPTS of auxilliary carrier wave is vacant to common signal channel.Generally, Primary Common Control Physical Channel (PCCPCH, PrimaryCommon Control Physical Channel), auxiliary publish control physical channel (SCCPCH, SecondaryCommon Control Physical Channel) and physical access channel (FPACH, Fast PhysicalAccess Channel) etc. all be configured in the TS0 time slot of dominant frequency point; Downlink pilot frequency channel (DwPCH, Downlink Pilot Channel) can be configured in the DwPTS time slot of dominant frequency point.All descending time slot power are controlled based on the descending time slot maximum transmission power in the existing N frequency point cell, because relative other business time-slot with pilot channel of public physic channel of TS0 time slot does not have the wave beam forming gain, therefore, if the power control to TS0 time slot, DwPTS time slot and other descending time slots is not treated with a certain discrimination, can bring public physic channel and the inconsistent problem of DPCH coverage.

Summary of the invention

The invention provides a kind of method and system of multi-carrier district descending time slot power configuration, in order to solve public physic channel and the inconsistent problem of DPCH coverage in the prior art.

The invention provides following technical scheme:

A kind of method of multi-carrier district descending time slot power control comprises step:

Transmitting power at the downlink pilot frequency channel of the transmitting power of the public physic channel of network side configuration zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the maximum downstream transmitting power;

Radio network controller (RNC) is when the resource status indication information that the reception base station reports, whether the transmitting power of judging the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the actual maximum downstream transmitting power in the described resource status indication information, if, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

The public physic channel of described zero time slot comprises Your Majesty physical channel, auxilliary public physic channel and physical access channel altogether.

Described maximum downstream transmitting power root power amplifier grade and bay number are determined.

The maximum transmission power of other downlink business time slots of each carrier wave is divided described maximum downstream transmitting power equally.

The transmitting power of down physical channel disposes in the maximum transmission power scope of this descending time slot in each descending time slot.

A kind of communication equipment that is used for multi-carrier district comprises:

Computing unit is used for calculating the maximum downstream transmitting power according to power amplifier grade and bay number;

Dispensing unit, be used to dispose the transmitting power of the downlink pilot frequency channel of the transmitting power of public physic channel of zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than described maximum downstream transmitting power;

Transmitting element is used for sending to other communication equipments the transmitting power of each descending time slot of described dispensing unit configuration.

The transmitting power of the down physical channel of configuration correspondence in each descending time slot maximum transmission power scope.

Require each descending time slot maximum transmission power of configuration according to the network planning.

A kind of communication equipment that is used for multi-carrier district comprises:

Memory cell, the transmitting power that is used for the downlink pilot frequency channel of all physical channels of zero time slot of storage networking side configuration and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all must not surpass the maximum downstream transmitting power;

Receiving element is used to receive the resource status indication information that the base station reports, and comprises actual maximum downstream transmitting power in this information;

Comparing unit is used for the transmitting power and the described actual maximum downstream transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot, descending pilot frequency time slot are compared;

Processing unit, when being used for transmitting power at the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot and descending pilot frequency time slot and all being no more than described actual maximum downstream transmitting power, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

Described communication equipment is a radio network controller (RNC).

A kind of communication system that is used for multi-carrier district comprises the base station, the radio network controller (RNC) that links to each other with described base station by communication interface and the operation maintenance equipment that links to each other with described RNC; Described operation maintenance equipment is used to zero time slot and descending pilot frequency time slot configuration of transmit power, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and described descending pilot frequency time slot all is no more than the maximum downstream transmitting power; Described radio network controller (RNC) is when the resource status indication information that the reception base station reports, whether the transmitting power of judging the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the actual maximum downstream transmitting power in the described resource status indication information, if, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

Described operation maintenance equipment comprises:

Computing unit is used for calculating the maximum downstream transmitting power according to power amplifier grade and bay number;

Dispensing unit, be used to dispose the transmitting power of the downlink pilot frequency channel of the transmitting power of public physic channel of zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than described maximum downstream transmitting power;

Transmitting element is used for sending to other communication equipments the transmitting power of each time slot of described dispensing unit configuration.

Described radio network controller (RNC) comprises:

Memory cell, the transmitting power that is used for the downlink pilot frequency channel of all physical channels of zero time slot of storage networking side configuration and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all must not surpass the maximum downstream transmitting power;

Receiving element is used to receive the resource status indication information that the base station reports, and comprises actual maximum downstream transmitting power in this information;

Comparing unit is used for the transmitting power and the described actual maximum downstream transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot, descending pilot frequency time slot are compared;

Processing unit, when being used for transmitting power at the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot and descending pilot frequency time slot and all being no more than described actual maximum downstream transmitting power, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

Beneficial effect of the present invention is as follows:

The present invention carries out power configuration with reference to the maximum downstream transmitting power to the public physic channel and the downlink pilot frequency channel of TS0 time slot and DwPTS time slot carrying, auxilliary frequency TS0 time slot and DwPTS time slot are vacant under the multi-carrier district situation, the maximum downstream transmitting power is greater than the time slot maximum transmission power, therefore adopt the present invention to dispose the transmitting power that TS0 time slot and DwPTS time slot channel transmitting power can improve public physic channel on main carrier TS0 time slot and the DwPTS time slot, the coverage of corresponding increase public physic channel solves public physic channel and the inconsistent problem of DPCH coverage simultaneously.

Description of drawings

Fig. 1 is existing TD-SCDMA system frame structure schematic diagram;

Fig. 2 is the structural representation of communication system in the embodiment of the invention;

Fig. 3 is the structural representation of operation maintenance equipment in the embodiment of the invention;

Fig. 4 is a RNC structural representation in the embodiment of the invention;

Fig. 5 is TS0 time slot and DwPTS time slot power control realization flow figure in the embodiment of the invention.

Embodiment

In order to solve public physic channel and the inconsistent problem of DPCH coverage in the prior art, the transmitting power of the down physical channel of TS0 time slot and DwPTS time slot is configured with reference to the maximum downstream transmitting power in the present embodiment, multi-carrier district maximum downstream transmitting power is greater than the time slot maximum transmission power, therefore adopt maximum downstream transmitting power configuration TS0 time slot and DwPTS time slot transmitting power, can improve the transmitting power of public physic channel, increase the common signal channel coverage accordingly.

Communication system architecture in the present embodiment as shown in Figure 2, this system comprises by the interconnectedterminal equipment 20 of communication interface,base station 21 and radio network controller (RNC) (Radio Network Controller) 22, and theoperation maintenance equipment 23 that links to each other with described radio network controller (RNC) 22; Describedoperation maintenance equipment 23 is used to TS0 time slot and DwPTS time slot configuration transmitting power, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of described all public physic channels of TS0 time slot and described DwPTS time slot all is no more than the maximum downstream transmitting power; Described radio network controller (RNC) 22 is when the resource status indication information that the describedbase station 21 of reception reports, whether the transmitting power of judging the downlink pilot frequency channel of the transmitting power sum of described all public physic channels of TS0 time slot and DwPTS time slot all is no more than the actual maximum downstream transmitting power in the described resource status indication information, if, allow to set up the sub-district, otherwise, notifyingoperation service equipment 23 antenna failure.

As shown in Figure 3, the operation maintenance equipment in thepresent embodiment 23 comprises:

Computing unit 230 is used for calculating the maximum downstream transmitting power according to power amplifier grade and bay number;

Dispensingunit 231, be used for transmitting power according to the downlink pilot frequency channel of the transmitting power of the public physic channel of network planning requirement configuration time slot maximum downstream transmitting power, TS0 time slot and DwPTS time slot, wherein, the transmitting power of downlink pilot frequency channel all must not surpass described maximum downstream transmitting power in the transmitting power sum of all public physic channels of TS0 time slot and the DwPTS time slot; The public physic channel of described TS0 time slot carrying comprises Your Majesty physical channel PCCPCH, auxilliary public physic channel SCCPCH and physical access channel FPACH etc. altogether;

Transmittingelement 232 is used for sending each descending time slot transmitting power that described dispensing unit disposes to other communication equipments.

As shown in Figure 4, the radio network controller (RNC) in thepresent embodiment 22 comprises:

Memory cell 220, be used for all physical channels of zero time slot of storage networking side configuration and the transmitting power of descending pilot frequency time slot downlink pilot frequency channel, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of TS0 time slot and DwPTS time slot all must not surpass the maximum downstream transmitting power;

Receivingelement 221 is used to receive the resource status indication information that the base station reports, and comprises actual maximum downstream transmitting power in this information;

Comparingunit 222 is used for the transmitting power and the described actual maximum downstream transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described TS0 time slot, DwPTS time slot are compared;

Processing unit 223, when being used for transmitting power at the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described TS0 time slot and DwPTS time slot and all being no more than described actual maximum downstream transmitting power, allow to set up the sub-district, otherwise, notifyingoperation service equipment 23 antenna failure.

Existing TD-SCDMA system adopts multi-antenna technology usually, and the power output grade of each antenna is P_out_nom_TX; For certain sector of base station node B, the computing formula of its maximum downstream transmitting power is as follows:

Max_Tx_Pow＝P_out_nom_TX+10log(N_ante)(1)

Wherein, N_ante is the bay number.

Descending time slot maximum transmission power MAX_TXP_DL_TS is the cell-level configurable parameter of a grid of reference planning requirement, and its computing formula is as follows:

MAX_TXP_DL_TS＝Max_Tx_Pow-10log(N_freq)(2)

Wherein, N_freq is the carrier number of multi-frequency-point community.

But in fact because hardware fault causes the inefficacy of part array element, the actual maximum downstream transmitting power Max_Tx_Pow_Real that the sector allows is less than maximum downstream transmitting power Max_Tx_Pow, and the actual maximum downstream transmitting power of radio network controller (RNC) Max_Tx_Pow_Real is notified by the resource status indication in the base station when the initialization of sector.

With single antenna power output P_out_nom_TX=30dBm is example, several frequently seen power parameter configuration as shown in table 1; The control of each descending time slot power is based on that descending time slot maximum transmission power MAX_TXP_DL_TS carries out in the prior art, and promptly any time slot disposes code channel power sum and is less than descending time slot maximum transmission power MAX_TXP_DL_TS.

Table 1

The transmitting power of the public physic channel of the TS0 time slot of main carrier and DwPTS time slot carrying is configured with reference to maximum downstream transmitting power Max_Tx_Pow in the present embodiment, on the effective basis of all antennas, calculate maximum downstream transmitting power Max_Tx_Pow according to power amplifier grade and bay number by above-mentioned formula (1) at network side; Require by above-mentioned formula (2) configurating downlink time slot maximum transmission power MAX_TXP_DL_TS according to the network planning; And require the transmit power parameter of all public physic channels that configuration TS0 time slot carried and the transmit power parameter of the downlink pilot frequency channel DwPCH that the DwPTS time slot is carried according to the network planning, wherein, the transmitting power sum of all public physic channels of TS0 time slot is no more than maximum downstream transmitting power Max_Tx_Pow; The transmitting power of downlink pilot frequency channel DwPCH generally is total to more than the transmitting power 3dB of physical channel PCCPCH greater than the Your Majesty, but is no more than maximum downstream transmitting power Max_Tx_Pow.

As shown in Figure 5, the implementation procedure of TS0 time slot and DwPTS time slot transmitting power control is as follows:

Step 500, based on the effective basis of all antennas, operation maintenance equipment is calculated maximum downstream transmitting power Max_Tx_Pow according to power amplifier grade and bay number, calculates by formula (1).

Step 501, operation maintenance equipment require configurating downlink time slot maximum transmission power MAX_TXP_DL_TS according to the network planning, calculate according to formula (2).

Step 502, operation maintenance equipment require the transmitting power of the downlink pilot frequency channel DwPCH of the transmitting power of public physic channel of configuration TS0 time slot and DwPTS time slot according to the network planning, wherein, the transmitting power of the downlink pilot frequency channel DwPCH of the transmitting power sum of all public physic channels of TS0 time slot and DwPTS time slot all is no more than maximum downstream transmitting power Max_Tx_Pow;

The public physic channel of TS0 time slot carrying has Your Majesty physical channel PCCPCH, auxilliary public physic channel SCCPCH and physical access channel FPACH etc. altogether in this step; The transmitting power of downlink pilot frequency channel DwPCH generally is total to more than the transmitting power 3dB of physical channel PCCPCH greater than the Your Majesty, but is no more than maximum downstream transmitting power Max_Tx_Pow.

Step 503, operation maintenance equipment dispose the maximum transmission power of other downlink business time slots of each carrier wave; A kind of preferable configuration mode is to divide the maximum downstream transmitting power equally.

Step 504, operation maintenance equipment send to RNC with the transmitting power of the downlink pilot frequency channel DwPCH of the transmitting power of the public physic channel of the TS0 time slot of configuration and DwPTS time slot and preserve.

Step 505, base station node B report the resource status indication to RNC, carry actual maximum downstream transmitting power Max_Tx_Pow_Real in this indication.

Step 506, RNC judge whether the transmitting power of the downlink pilot frequency channel DwPCH of the transmitting power sum of all public physic channels of TS0 time slot and DwPTS time slot all is no more than actual maximum downstream transmitting power Max_Tx_Pow_Real, if then execution instep 507; Otherwise the prompting attendant checks the antenna physical state of relevant sectors, returnsstep 505;

If actual maximum transmission power is lower than the TS0 time slot transmitting power or the DwPTS time slot transmitting power of configuration in this step, do not reach the antenna capabilities of configuration when then showing the antenna actual motion, may be the inefficacy that causes the array element part owing to hardware fault this moment, so need to check the antenna physical state of relevant sectors.

Step 507, allow to set up the sub-district.

Sub-district with single sector 6 antennas, 3 carrier waves is example (the single antenna power output is 30dBm) below, and the configuration of the maximum transmission power of TS0 time slot in prior art and the present embodiment and DwPTS time slot is made comparisons

Illustrate, as shown in table 2:

?	The maximum downstream transmitting power	The descending time slot maximum transmission power	TS0 time slot maximum transmission power	DwPTS time slot maximum transmission power	Other descending time slot maximum transmission power
						Prior art	37.78?	33.01?	33.01?	33.01?	37.78-10log3＝33.01?
Present embodiment	37.78?	33.01?	37.78?	37.78?	37.78-10log3＝33.01?

Table 2

As can be seen from the above table, adopt the present invention to improve and be configured in public physic channel transmitting power on main carrier TS0 time slot and the DwPTS time slot, thereby increased the coverage of public physic channel.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (13)

1. the method for a multi-carrier district descending time slot power control is characterized in that, comprises step:

Transmitting power at the downlink pilot frequency channel of the transmitting power of the public physic channel of network side configuration zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the maximum downstream transmitting power;

Radio network controller (RNC) is when the resource status indication information that the reception base station reports, whether the transmitting power of judging the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the actual maximum downstream transmitting power in the described resource status indication information, if, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

2. the method for claim 1 is characterized in that, the public physic channel of described zero time slot comprises Your Majesty physical channel, auxilliary public physic channel and physical access channel altogether.

3. the method for claim 1 is characterized in that, described maximum downstream transmitting power is determined according to power amplifier grade and bay number.

4. as each described method of claim 1 to 3, it is characterized in that the maximum transmission power of other downlink business time slots of each carrier wave is divided described maximum downstream transmitting power equally.

5. method as claimed in claim 4 is characterized in that, the transmitting power of down physical channel disposes in the maximum transmission power scope of this descending time slot in each descending time slot.

6. a communication equipment that is used for multi-carrier district is characterized in that, comprising:

Computing unit is used for calculating the maximum downstream transmitting power according to power amplifier grade and bay number;

Dispensing unit, be used to dispose the transmitting power of the downlink pilot frequency channel of the transmitting power of public physic channel of zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than described maximum downstream transmitting power;

Transmitting element is used for sending to other communication equipments the transmitting power of each descending time slot of described dispensing unit configuration.

7. equipment as claimed in claim 6 is characterized in that, the transmitting power of the down physical channel of configuration correspondence in each descending time slot maximum transmission power scope.

8. equipment as claimed in claim 6 is characterized in that, requires each descending time slot maximum transmission power of configuration according to the network planning.

9. a communication equipment that is used for multi-carrier district is characterized in that, comprising:

Memory cell, the transmitting power that is used for the downlink pilot frequency channel of all physical channels of zero time slot of storage networking side configuration and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all must not surpass the maximum downstream transmitting power;

Receiving element is used to receive the resource status indication information that the base station reports, and comprises actual maximum downstream transmitting power in this information;

Comparing unit is used for the transmitting power and the described actual maximum downstream transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot, descending pilot frequency time slot are compared;

Processing unit, when being used for transmitting power at the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot and descending pilot frequency time slot and all being no more than described actual maximum downstream transmitting power, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

10. communication equipment as claimed in claim 9 is characterized in that, described communication equipment is a radio network controller (RNC).

11. a communication system that is used for multi-carrier district is characterized in that, comprises the base station, the radio network controller (RNC) that links to each other with described base station by communication interface and the operation maintenance equipment that links to each other with described RNC; Described operation maintenance equipment is used to zero time slot and descending pilot frequency time slot configuration of transmit power, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and described descending pilot frequency time slot all is no more than the maximum downstream transmitting power; Described radio network controller (RNC) is when the resource status indication information that the reception base station reports, whether the transmitting power of judging the downlink pilot frequency channel of the transmitting power sum of described zero all public physic channels of time slot and descending pilot frequency time slot all is no more than the actual maximum downstream transmitting power in the described resource status indication information, if, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

12. communication system as claimed in claim 11 is characterized in that, described operation maintenance equipment comprises:

Computing unit is used for calculating the maximum downstream transmitting power according to power amplifier grade and bay number;

Dispensing unit, be used to dispose the transmitting power of the downlink pilot frequency channel of the transmitting power of public physic channel of zero time slot and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all is no more than described maximum downstream transmitting power;

Transmitting element is used for sending to other communication equipments the transmitting power of each time slot of described dispensing unit configuration.

13. communication system as claimed in claim 11 is characterized in that, described radio network controller (RNC) comprises:

Memory cell, the transmitting power that is used for the downlink pilot frequency channel of all physical channels of zero time slot of storage networking side configuration and descending pilot frequency time slot, wherein, the transmitting power of the downlink pilot frequency channel of the transmitting power sum of zero all public physic channels of time slot and descending pilot frequency time slot all must not surpass the maximum downstream transmitting power;

Receiving element is used to receive the resource status indication information that the base station reports, and comprises actual maximum downstream transmitting power in this information;

Comparing unit is used for the transmitting power and the described actual maximum downstream transmitting power of the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot, descending pilot frequency time slot are compared;

Processing unit, when being used for transmitting power at the downlink pilot frequency channel of the transmitting power sum of all public physic channels of described zero time slot and descending pilot frequency time slot and all being no more than described actual maximum downstream transmitting power, allow to set up the sub-district, otherwise, notifying operation service equipment antenna failure.

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