CN1315345C - Method and apparatus for controlling emitting time slot of base station in radio communication system - Google Patents
Method and apparatus for controlling emitting time slot of base station in radio communication system Download PDFInfo
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- CN1315345C CN1315345C CNB2004100569536A CN200410056953A CN1315345C CN 1315345 C CN1315345 C CN 1315345C CN B2004100569536 A CNB2004100569536 A CN B2004100569536A CN 200410056953 A CN200410056953 A CN 200410056953A CN 1315345 C CN1315345 C CN 1315345C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention relates to a method for controlling emitting time slots of a base station in a radio communication system and a device thereof. A base station comprises an emitting unit. The method comprises the following procedures: (1), when the system detects that the current emitting time slots of the emitting unit have no user data, control signals are sent to the emitting unit; (2), the emitting unit receives the control signals, and switches equipment of the unit to a power saving mode. The power saving mode specifically means that an emitter, a power amplifier, or any of the emitter and the power amplifier in the emitting unit is switched off. The present invention switches off the emitting unit under the condition that no emitting time slots are used by users. Thereby, basic power consumption is reduced, and operation and maintenance cost is reduced.
Description
Technical field
The present invention relates to wireless communication system, relate in particular to a kind of method and apparatus that the base station time slot of wireless communication system is controlled.
Background technology
In recent years, along with the develop rapidly of communication system, wireless communication system not only comprises traditional Frequency Division Duplexing (FDD) (FDD) wireless communication system, also comprises time division duplex (TDD) wireless communication system.These wireless communication systems all are by a radio frames is divided into some time slots, and each time slot supports a plurality of radio resource unit to carry out the transmission of signal.
And the base station is pith in the wireless communication system, it mainly is responsible for the reception and the transmission of signal, being sent to mobile switching centre after the signal processing of the user terminal of collecting, or the signal after will handling by equipment such as switches, send terminal again to, thereby realized the communication function between the wireless user.
See also Fig. 1, it is a theory structure schematic diagram of prior art base sub-system.This base sub-system is made up of base station transceiver station 1 (BTS) and base station controller 2 (BSC).Work under the control of base station controller 14 in base station transceiver station 1, it mainly provides the access function of Radio Resource, and base station controller 14 mainly provides the controlled function of Radio Resource.In this schematic diagram, base station transceiver station 1 comprises receiving element 11, transmitter unit 12, signal data processing unit 13, and wherein, signal data processing unit 13 comprises baseband signal processing unit (not illustrating among the figure).
What illustrate among Fig. 1 is the structural representation that a base station transceiver station 1 is connected with a base station controller 2, and still, a base station controller 2 is controlled a plurality of base station transceivers station 1 usually.Each base station transceiver station 1 links to each other with base station controller 2 through network by Base Station Interface Equipment.See also Fig. 2, it is a theory structure schematic diagram at collection of letters station, base station 1.
Base Station Interface Equipment 14 receives the control signal control receiving element 11 of base station controller 2, the work of transmitter unit 12 by network, in wireless communication system, determine in order to the descending time slot of emission data with in order to the number and the time of the ascending time slot that receives data in every frame, the clock signal that produces with the internal clocking unit in transceiver station 1 is a benchmark, sending the emission enable signal is that effective status/disarmed state activates transmitter unit 12 opening/closings, and sending and receiving enable signal is that effective status/disarmed state activates receiving element 11 opening/closings.But descending time slots all in the base station design of present communication system are in the cycle, and transmitter unit is all in running order, and wherein transmitter unit 12 comprises sender and power amplifier, causes the waste of resource thus, and then improve the cost of operation.
Below be example with the base station of adopting multi-slot TDD wireless communication system, specify the operating state of base station.See also Fig. 3, it adopts the working state figure of the base station (being the base station transceiver station) of multi-slot TDD wireless communication system for prior art.The effective status of supposing all control signals is a high level.The on-air radio signal of this multi-slot TDD wireless communication system comprises descending time slot, protection time slot and ascending time slot.The base station transmits it by emission enable signal to the transmitter unit 11 that sends high level at descending time slot in the cycle, makes its received signal by reception enable signal to the receiving element 12 that sends high level at ascending time slot in the cycle.When transmitter unit 12 at descending time slot when the no user data need send in the cycle, can those data being set to 0 launches, this just causes will launching or user data only takies the part descending time slot during cycle when descending slot cycle user data of no use, sender and power amplifier also need in running order, make resource obtain waste, and then make operation maintenance cost increase.
Summary of the invention
Purpose of the present invention promptly is to solve above-mentioned the deficiencies in the prior art, provide a kind of at the transmission time slot that does not have the user to use, emission comprises that the transmitter unit of transmitter and power amplifier etc. is closed or is switched method and the device to the battery saving mode in the path, to economize on resources, cut operating costs.
For achieving the above object, the invention discloses the method for in a kind of wireless communication system the base station time slot being controlled, described base station comprises transmitter unit, may further comprise the steps: (1) sends control signal when system detects when on the current transmission time slot of transmitter unit user data not being arranged to transmitter unit; (2) transmitter unit receives described control signal, and the equipment in this unit is switched to battery saving mode.
Battery saving mode comprises in the step (2): turn-off transmitter in the transmitter unit and power amplifier or one of them.Described system can be the FDD wireless communication system, also can be the TDD wireless communication system.
The invention also discloses the device of in a kind of wireless communication system the base station time slot being controlled, described base station comprises baseband signal processing unit, control device, transmitter unit, described control device links to each other with transmitter unit, when system detects when on the current transmission time slot of transmitter unit user data being arranged, baseband signal processing unit sends time slot corresponding state of activation signal to control device, control device sends control signal to transmitter unit, opens transmitter unit; When system had not detected user data, control device sent control signal to transmitter unit, closes transmitter unit or transmitter unit is switched to battery saving mode.
Control unit, its input receives instruction of emission enable signal and time slot state of activation signal instruction, its output connects transmitter unit, in order to send the work of control signal control transmitter unit: when emission enable signal that receives and time slot state of activation signal all are effective status, send control signal and activate transmitter unit work, one of them sends control signal activation transmitter unit and closes when disarmed state at least in emission enable signal that receives and the time slot state of activation signal; The data that described baseband signal processing unit has/do not have needs to send according to current descending time slot send the time slot state of activation signal of effective status/disarmed state, with the opening/closing transmitter unit.
Described control unit comprises AND gate.
This control unit also comprises a buffer, and its input is in order to receive enable signal, and its output connects receiving element, is used to control the work of receiving element.
Described control unit also comprises: OR-gate: one input end is in order to accept to receive enable signal, another input connects the output of described AND gate by an inverter, its output connects receiving element, be used for output control receiving element work: when AND gate is output as disarmed state according to AND gate, the activation receiving element is opened, when AND gate is output as effective status and receives enable signal when being disarmed state, activate receiving element and close.
Described transmitter unit comprises sender and power amplifier.Described control device also comprises: first electronic switch: its input connects emission enable signal and power supply signal respectively, its output connects sender, being used to control sender works under the control of described control signal: when control signal is an effective status, open sender work, when control signal is a disarmed state, close sender; Second electronic switch: its input connects emission enable signal and power supply signal respectively, its output connects the power amplifier offset power supply, being used to control bias supply works under the control of described control signal: when control signal is an effective status, open the power amplifier offset power work, when control signal is a disarmed state, close the power amplifier offset power supply.
Compared with prior art, the present invention has the following advantages: the present invention comprises that with transmitter unit transmitter and power amplifier turn-off, thereby reduces the power consumption of base station at the transmission time slot that does not have the user to use, reduces operation maintenance cost, and then improve the reliability of equipment.
For receiving-transmitting chain, it is the consumptions of sender and power amplifier that 60%～90% power consumption is generally arranged, and power consumption mainly still depends on transmitting power, and transmitting power is big more, and shared proportion is just big more.Supposing the system has 4 descending time slots, and one of them is as the shared time slot of system, needs to launch data all the time, under extreme case,, there is not the user to use as the late into the night, all the other 3 time slots just can be closed transmitter unit (sender and power amplifier), and transmitter unit can economize on electricity 40～60% like this.Following table 1 is the power consumption situation of a transmitter unit.
Table 1
| Descending | Descending | Descending time slot 2 | Descending time slot 3 | Save power consumption | |||
| (maximum power dissipation is defined as 1 to the transmitter unit power consumption, | Business time-slot no user business time-slot is that full customer service time slot is that full customer service time slot is that certain customers' business time-slot is | 1 1 1 1 1 | 0.55 1 1 0.8 0.8 | 0.55 0.55 1 0.55 0.8 | 0.55 0.55 0.55 0.55 0.55 | | 62％ 35％ 15％ 38％ 17％ |
The analysis of above-mentioned economize on electricity is an example, and actual conditions change greatly, still by the analysis of above example, is not having user's time slot, closes equipment in the transmitter unit, as transmitter and power amplifier, saves the effect highly significant of power consumption.
Description of drawings
Fig. 1 is a theory structure schematic diagram of prior art base station sub-system;
It is a theory structure schematic diagram at the base station transceiver station of Fig. 1 for Fig. 2;
Fig. 3 adopts the working state figure of the base station of TDD wireless communication system for prior art;
Fig. 4 is that the present invention is used for the flow chart that the multiple time slot communication system base station is controlled transmission time slot;
Fig. 5 is used for the structural representation of multiple time slot communication system base station control device for the present invention;
Fig. 6 is used for the first example structure schematic diagram of TDD multiple time slot communication system base station control device for the present invention;
Fig. 7 is for adopting the multi-slot TDD on-air radio signal and the base station working state figure of control device shown in Figure 5;
Fig. 8 is used for the second example structure schematic diagram of multiple time slot communication system base station control device for the present invention;
Fig. 9 is for adopting the multi-slot TDD on-air radio signal and the base station working state figure of control device shown in Figure 7;
Figure 10 controls transmitter control chart with the work of power amplifier for the present invention.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
The present invention mainly is the control that changes the base station time slot, be that system is in descending time slot during the cycle, if user data of no use needs to send, close transmitter unit, comprise the transmitter of closing wherein and power amplifier or one of them, to reach the power consumption that reduces the base station, reduce operation maintenance cost, to improve the reliability of equipment.
See also Fig. 4, it is the flow chart of the method the base station time slot controlled in the multiple time slot communication system.
Step S110:, send control signal to transmitter unit when system detects when on the current transmission time slot of transmitter unit user data not being arranged;
Step S120: transmitter unit receives described control signal, and the equipment in this unit is switched to battery saving mode.Battery saving mode mainly refers to turn-off transmitter in the transmitter unit and power amplifier or one of them.
When the baseband signal processing unit of base station receives the transmission downlink data information instruction of being sent by Base Station Interface Equipment by base station controller, again according to the size of radio frames and the number of transmitting downlink data time slot, send control signal by control unit, open transmitter unit, so that the corresponding downstream data message is sent out, when detecting on the current transmission time slot user data is not arranged, close transmitter unit, make transmitter unit enter battery saving mode by the control signal that control unit sends.More than disclosed only for finishing the mode of a kind of transmission time slot of the present invention control, the control device of finishing a kind of transmission time slot control of the present invention of following discloses.
See also Fig. 5, it is the part-structure schematic diagram that is used for radio communication system base station.Described base station comprises baseband signal processing unit 15, transmitter unit 12 and a control device.
Described control device comprises control unit 16, its input receives emission enable signal and time slot state of activation signal, its output connects transmitter unit 12, in order to control transmitter unit work: when emission enable signal that receives and time slot state of activation signal all are effective status, send control signal and activate transmitter unit work, one of them sends control signal activation transmitter unit and closes when disarmed state at least in emission enable signal that receives and the time slot state of activation signal.
After Base Station Interface Equipment 14 receives the instruction of transmission downlink data that base station controller sends and sending order by network, baseband signal processing unit 15 receives the corresponding downstream data by Base Station Interface Equipment 14, then decide sending time slots state of activation signal to be designated as effective status signal instruction or disarmed state signal instruction according to those data, suppose that effective status is a high level, when if current descending time slot has the data that need transmission, the time slot state of activation signal instruction that sends out is a high level, to open transmitter unit 12; If during the data that current descending time slot need not send, the time slot state of activation signal instruction that sends out is a low level, to close transmitter unit 12.
Described control unit 16 can be an equivalent circuit element of AND gate or similar AND gate.
Below for the TDD wireless communication system is an example, specifying the base station is how to control transmission time slot, to reach transmitter unit 12 work that control comprises transmitter and power amplifier.
See also Fig. 6, it is a part of structural representation of the base station of TDD wireless communication system.Control unit in the control device is an AND gate 22, its input receives instruction of emission enable signal and time slot state of activation signal instruction, its output connects transmitter unit, in order to control transmitter unit work: when emission enable signal instruction that receives and time slot state of activation signal instruction all are effective status, send control signal and activate transmitter unit work, one of them sends control signal activation transmitter unit and closes when disarmed state at least in emission enable signal that receives and the time slot state of activation signal.
Also comprise a buffer 21 in this control device, preserve the normal enable signal that receives, send it to receiving element then, this buffer 21 mainly plays the effect of buffering, and this buffer 21 also can omit.
Adopt in the above-mentioned base station design, multi-slot TDD on-air radio signal and base station operating state are as shown in Figure 7.The reception of receiving element enables sequential and does not change, but emission enables sequential and changes, when not having downlink data to launch in the descending slot cycle, baseband signal processing unit 15 sends the time slot state of activation signal instruction of low level (is effective status such as high level), do not work in order to the control transmitter unit, reduce power consumption thus.
Embodiment 2
See also Fig. 8, it is the structural representation of the another kind of embodiment of control unit.This control device comprises:
One AND gate 22, its input receives indication of emission enable signal and time slot state of activation signal instruction, its output connects transmitter unit, in order to control transmitter unit work: when emission enable signal instruction that receives and time slot state of activation signal instruction all are effective status, send control signal and activate transmitter unit work, one of them sends control signal activation transmitter unit and closes when disarmed state at least in emission enable signal instruction that receives and the time slot state of activation signal instruction;
One OR-gate 24, one input end is in order to receive enable signal, another input connects the output of described AND gate by an inverter 25, its output connects receiving element 11, be used for output control receiving element work: when AND gate 22 is output as the disarmed state signal according to AND gate 22, the activation receiving element is opened, and when AND gate is output as the effective status signal and receives enable signal when being disarmed state, activates receiving element and closes.
Adopt in the above-mentioned base station design, multi-slot TDD on-air radio signal and base station operating state are as shown in Figure 9.Keep reception to enable sequential and change with the variation that emission enables sequential, exactly at the time slot of not launching data, it is low level that emission enables sequential, sender and power amplifier are closed, and receive and enable sequential this moment is high level, and receiver is opened.Reception enables and emission to enable 2 control signals be complementary signal, emission enables then to receive when enabling and enables to not enabling, emission enables then to receive when not enabling and enables to enabling.
Wherein, be how by accepting the control of control signal to transmitter unit 12, below be example with sender and power amplifier, specify.
See also Figure 10, for sender and power amplifier close and open control, by supply control time slot to the power supply of the power supply of sender and power amplifier offset.Emission enables to control first electronic switch, second electronic switch, and this electronic switch can be realized with triode and field effect transistor.When emission enables, first electronic switch and second electronic switch closes, power supply is supplied with sender and power amplifier offset circuit, sender and power amplifier worker operate as normal.When emission did not enable, first electronic switch and second electronic switch were opened, and did not have power supply to supply with sender and power amplifier offset circuit, and sender and power amplifier quit work.
More than disclosed only be a specific embodiment of the present invention, the device of in a kind of TDD wireless communication system the transmission time slot of base station being controlled is only disclosed among the present invention, equally also be applicable to the FDD wireless communication system since the device similar, do not give unnecessary details at this.In the FDD wireless communication system, the base station controls transmitter work with power amplifier by adopting controllable electric power, and certainly, power amplifier is also preferably by its bias supply of control.
Claims (10)
1, the method for in a kind of wireless communication system the base station time slot being controlled, described base station comprises transmitter unit, it is characterized in that, may further comprise the steps: (1) sends control signal when system detects when on the current transmission time slot of transmitter unit user data not being arranged to transmitter unit;
(2) transmitter unit receives described control signal, and the equipment in this unit is switched to battery saving mode.
2, the method for in a kind of wireless communication system as claimed in claim 1 the base station time slot being controlled is characterized in that, battery saving mode comprises in the step (2): turn-off transmitter in the transmitter unit and power amplifier or one of them.
3, the method for in a kind of wireless communication system as claimed in claim 1 the base station time slot being controlled is characterized in that, described system can be the FDD wireless communication system, also can be the TDD wireless communication system.
4, the device of in a kind of wireless communication system the base station time slot being controlled, described base station comprises baseband signal processing unit, control device and transmitter unit, it is characterized in that, described control device links to each other with transmitter unit, when system detects when on the current transmission time slot of transmitter unit user data being arranged, baseband signal processing unit sends time slot corresponding state of activation signal to control device, and control device sends control signal to transmitter unit, opens transmitter unit; When system had not detected user data, control device sent control signal to transmitter unit, closes transmitter unit or transmitter unit is switched to battery saving mode.
5, the device of in the wireless communication system as claimed in claim 4 the base station time slot being controlled is characterized in that,
Described control device comprises a control unit, this control unit input receives instruction of emission enable signal and time slot state of activation signal instruction, its output connects transmitter unit, in order to send the work of control signal control transmitter unit: when emission enable signal that receives and time slot state of activation signal all are effective status, send control signal and activate transmitter unit work, one of them sends control signal activation transmitter unit and closes when disarmed state at least in emission enable signal that receives and the time slot state of activation signal; The data that described baseband signal processing unit has/do not have needs to send according to current descending time slot send the time slot state of activation signal of effective status/disarmed state, with the opening/closing transmitter unit.
6, the device of in the wireless communication system as claimed in claim 5 the base station time slot being controlled is characterized in that, described control unit comprises an AND gate.
7, the device of in the wireless communication system as claimed in claim 6 the base station time slot being controlled is characterized in that, also comprises a buffer, and its input is in order to receive enable signal, and its output connects receiving element, is used to control the work of receiving element.
8, the device of in the wireless communication system as claimed in claim 6 the base station time slot being controlled is characterized in that, described control unit also comprises:
One OR-gate: one input end is in order to accept to receive enable signal, another input connects the output of described AND gate by an inverter, its output connects receiving element, be used for output control receiving element work: when AND gate is output as disarmed state according to AND gate, open receiving element, when AND gate is output as effective status and receives enable signal when being disarmed state, close receiving element.
9, the device as in claim 7 or the 8 described wireless communication systems base station time slot being controlled is characterized in that described transmitter unit comprises sender and power amplifier.
10, the device of in the wireless communication system as claimed in claim 9 the base station time slot being controlled is characterized in that, described control device also comprises:
First electronic switch: its input connects emission enable signal and power supply signal respectively, its output connects sender, being used to control sender works under the control of described control signal: when control signal is an effective status, open sender work, when control signal is a disarmed state, close sender;
Second electronic switch: its input connects emission enable signal and power supply signal respectively, its output connects the power amplifier offset power supply, being used to control bias supply works under the control of described control signal: when control signal is an effective status, open the power amplifier offset power work, when control signal is a disarmed state, close the power amplifier offset power supply.
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| CNB2004100569536A CN1315345C (en) | 2004-08-23 | 2004-08-23 | Method and apparatus for controlling emitting time slot of base station in radio communication system |
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