CN101272164A - Forward access channel closed-loop power control method of multimedia broadcast multicast service - Google Patents
Forward access channel closed-loop power control method of multimedia broadcast multicast service Download PDFInfo
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- CN101272164A CN101272164A CNA2007100900397A CN200710090039A CN101272164A CN 101272164 A CN101272164 A CN 101272164A CN A2007100900397 A CNA2007100900397 A CN A2007100900397A CN 200710090039 A CN200710090039 A CN 200710090039A CN 101272164 A CN101272164 A CN 101272164A
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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
Abstract
The invention discloses a forward access channel closed-loop power control method of a multimedia broadcasting multicast service in a WCDMA system, which comprises the steps that: a cell decides the number of UE which are receiving the multimedia broadcasting multicast services; if the counting result is less than the preset threshold value, the UE is kept in CELL_FACH state; the measurement control is started in the forward access channel and the UE reports the measurement report information about QoS; RNC adjusts the emissive power of the forward access channel according to the measurement report information about QoS reported by the UE. By adopting the method of the invention, the problem that the emissive power can not be dynamically adjusted according to the actual situation is solved, the power load of the system is effectively saved and the system capacity and QoS of services are enhanced.
Description
Technical field
The present invention relates to communication system, relate in particular to the closed-loop power control method of the forward access channel (FACH) of bearing multimedia broadcast multicast (MBMS) business in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system.
Background technology
The MBMS business is the new business that third generation collaboration items tissue (3GPP) is being formulated, and its advantage is the service communication that can carry out point-to-multipoint, and the sharpest edges of this business are to make full use of Radio Resource and Internet resources.
In 3G (Third Generation) Moblie technology (3G) system, at the receiving feature of MBMS business, one of its send mode is to consider to adopt the FACH channel to carry the MBMS business, guarantees the communication of point-to-multipoint.Using common signal channel to send one of professional benefit is exactly to make that other users in the zone are also covered automatically in the user at edge, overlay area.
Under the situation that adopts FACH channel bearing MBMS, also need to consider of the consumption of FACH channel for base station down transmitting power.The consumption of power plays a big part to quality of service and power system capacity.At present, the FACH channel does not have the closed power controlling mechanism, can not adjust transmitting power dynamically according to actual conditions, therefore, all want to receive the quality of reception of the terminal (UE) of this MBMS business in the sub-district in order to satisfy, and the power of FACH channel need be sent and extend to cell edge.Like this, in the sub-district UE number seldom, and UE is when being in the center of housing estate position, power can cause very big waste.
Summary of the invention
Technical problem to be solved by this invention provides a kind of forward access channel closed-loop power control method of multimedia broadcast-multicast service, solved the problem that to adjust transmitting power according to actual conditions dynamically, effectively save the power load of system, improved power system capacity and professional service quality.
In order to solve the problems of the technologies described above, the invention provides a kind of forward access channel closed-loop power control method of multimedia broadcast-multicast service, be used for the WCDMA system, comprising:
The sub-district judges the terminal UE number at the receiving multimedia broadcast multicast service just, and when count results during less than the thresholding that sets in advance, described UE remains on the CELL_FACH attitude; In the control of described forward access channel sending measuring, by described UE to radio network controller (RNC) reporting service quality measurement report information; The qos measurement report information that described RNC reports according to described UE is adjusted described forward access channel transmitting power.
Further, said method also can comprise: to just before the UE of receiving multimedia broadcast multicast service number is judged, described sub-district is to described UE start-up period counting in described sub-district.
Further, said method also can comprise: the described thresholding that sets in advance is 3,4,5 or 6.
Further, said method also can comprise: in described RNC side two thresholdings of weighing described UE service quality value are set: thresholding A and thresholding B.
Further, said method also can comprise: adopt Block Error Rate value or pilot reception mass value as measuring amount to described UE service quality value.
Further, said method also can comprise: when described RNC adjusts described forward access channel transmitting power, may further comprise the steps:
D1, described RNC judge at the report cycle that calls time on measuring whether this report cycle expires, if this report cycle expires, and execution in step d2, otherwise continue to wait for report cycle;
D2, described RNC periodically detect the qos measurement report information that described UE reports according to the measurement control that issues at described forward access channel; When sense cycle finishes, according to the quality information group that measuring amount record in this sense cycle obtains, judge that at first whether service quality value that this UE reports is greater than described thresholding B, if the service quality value that this UE reports is greater than described thresholding B, execution in step d6 then, otherwise execution in step d3;
D3, judge that whether service quality value that all described UE report is all less than described thresholding A, if the service quality value that all described UE report is all less than described thresholding A, execution in step d4; Otherwise execution in step d9;
D4, described RNC trigger the downward modulation to the transmitting power of described forward access channel;
The court verdict of the qos measurement report information that d5, described RNC report according to described UE is adjusted the transmitting power of described forward access channel by the field in the wireless parameter updating message of user's face;
D6, described RNC determine that the described UE number that service quality value that described UE reports is higher than described thresholding B is N1;
Whether d7, described RNC judge number N1 greater than the described thresholding that sets in advance, if N1 greater than this thresholding that sets in advance, execution in step d8, otherwise, execution in step d9;
D8, described RNC trigger the rise to the transmitting power of described forward access channel, execution in step d5;
The arrival of d9, the next described report cycle of judging of wait; Execution in step d1 restarts to judge flow process.
Further, said method also can comprise: in described sub-district to just when the UE of receiving multimedia broadcast multicast service number is judged, if count results is not less than the thresholding that sets in advance, then recover the power configuration of sub-district all standing, and close the measurement control needs of having opened, with all described UE Idle state of moving back.
Further, said method also can comprise: in the described steps d 2, described sense cycle is the integral multiple of described report cycle, and this sense cycle long measure is a second level.
Further, said method also can comprise: in the described steps d 4, the amplitude of described downward modulation is a fixed step size, or variable adaptive step.
Further, said method also can comprise: in the described steps d 8, the amplitude of described rise is a fixed step size; Or the variation of the service quality value that reports according to described UE carries out the self adaptation adjustment, up to the performance number that reaches the sub-district all standing.
Compared with prior art, because the present invention has adopted a kind of forward access channel closed-loop power control method of multimedia broadcast-multicast service, solved the problem that to adjust transmitting power according to actual conditions dynamically, effectively save the power load of system, improved power system capacity and professional service quality.
Description of drawings
Fig. 1 is the flow chart that the FACH channel closed power of the MBMS business of the embodiment of the invention is controlled;
Fig. 2 is that the qos measurement report information that embodiment of the invention radio network controller (RNC) reports according to UE carries out the flow chart that power is adjusted.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
In the WCDMA system, can carry out the characteristics of the service communication of point-to-multipoint at the MBMS business, one of its send mode is to consider to adopt the FACH channel to carry the MBMS business, guarantees the communication of point-to-multipoint.The FACH channel application is in downlink transfer in this system, and (RACH is applied to uplink to Random Access Channel.
Described the flow process of FACH channel closed-loop power control method of the MBMS business of the embodiment of the invention in the WCDMA system among Fig. 1, concrete steps are as follows:
The UE counting of step 101, sub-district start-up period, execution in step 102 then;
This step mainly is for limiting too much UE reporting measurement reports the RACH channel congestion to take place, and the UE number that therefore need be received the MBMS business is as whether the sending measuring report makes a decision foundation.
The wherein said thresholding that sets in advance is generally 3,4,5 or 6.
Promptly after finishing once counting, described UE is not made the change of any state.
The mode of UE reporting service quality measurement report information is event mode or preiodic type; In the RNC side two thresholdings are set: the thresholding B that thresholding A that the UE service quality value is high and UE service quality value are low (Block Error Rate (BLER) value, pilot reception quality (Ec/Io) value or other measuring amount etc. that for example adopt UE to measure.
For example above-mentioned thresholding A and thresholding B are issued to UE by measuring control messages at the event mode of BLER value for measuring amount: RNC, compare according to true measurement and described thresholding A and thresholding B by UE oneself, when measured value during greater than thresholding B or less than thresholding A thresholding, reporting measurement amount then, otherwise do not report; Present embodiment is primarily aimed at preiodic type and reports mode to set forth.Present embodiment is determined the service quality value of UE as measuring amount with the BLER value; According to the measuring amount that UE periodically reports, carry out the judgement that the FACH channel emission power is adjusted.
When wherein adopting the BLER value to determine the service quality value of UE as measuring amount, the BLER value is high, and then the service quality value of UE is low, otherwise can push away; When wherein adopting the Ec/Io value to determine the service quality value of UE as measuring amount, the Ec/Io value is high, the service quality value height of UE then, on the contrary can push away.
The qos measurement report information that step 105, RNC real time record UE report, as foundation to FACH channel emission power adjustment judgement, when needs are adjusted the FACH channel emission power, then adjust the FACH channel emission power by the field (Transmit Power Level) in the wireless parameter updating message of user's face;
Power (Pmax) configuration of step 106, recovery sub-district all standing; And close measurement control needs of having opened, with all UE free time (Idle) attitude of moving back; Because the UE quantity of this moment is more, meaning and possibility that power is adjusted are all little.
Described among Fig. 2 in the WCDMA system, the qos measurement report information that the RNC in the FACH channel closed-loop power control method of the MBMS business of the embodiment of the invention reports according to UE carries out the flow process that power is adjusted, and concrete steps are as follows:
At this moment, in the UE of the reporting service quality group, all UE are under the goodish environment of wireless quality.
The court verdict of the measurement report information that step 206, RNC report according to UE is by the Transmit Power Level parameter adjustment FACH channel transmitting power of user's face;
At this moment, in the UE of the reporting service quality group, exist UE to be under the environment that wireless quality is on duty mutually.
Whether step 208, RNC judge number N1 greater than the described thresholding that sets in advance, if N1 is greater than this thresholding that sets in advance, execution in step 209, otherwise, just exist the UE of poor quality once in a while, thinking to happen suddenly causes, do not need the FACH channel emission power is carried out the power adjustment execution in step 210;
At this moment, in the UE of the reporting service quality group, exist numerous UE to be under the environment that wireless quality is on duty mutually.
The above only is an illustrated embodiment of the present invention, should know that this can have many modification, this modification is not considered to break away from the spirit and scope of illustrated embodiment of the present invention, and the conspicuous modification of all such those of ordinary skills is within the scope of the appended claims involved.
Claims (10)
1. the forward access channel closed-loop power control method of a multimedia broadcast-multicast service is used for the WCDMA system, comprising:
The sub-district judges the terminal UE number at the receiving multimedia broadcast multicast service just, and when count results during less than the thresholding that sets in advance, described UE remains on the CELL_FACH attitude; In the control of described forward access channel sending measuring, by described UE to radio network controller (RNC) reporting service quality measurement report information; The qos measurement report information that described RNC reports according to described UE is adjusted described forward access channel transmitting power.
2. the method for claim 1 is characterized in that, to just before the UE of receiving multimedia broadcast multicast service number is judged, described sub-district is to described UE start-up period counting in described sub-district.
3. the method for claim 1 is characterized in that, the described thresholding that sets in advance is 3,4,5 or 6.
4. as claim 1,2 or 3 described methods, it is characterized in that, in described RNC side two thresholdings of weighing described UE service quality value are set: thresholding A and thresholding B.
5. method as claimed in claim 4 is characterized in that, adopts Block Error Rate value or pilot reception mass value as measuring amount to described UE service quality value.
6. as claim 1,2,3 or 5 described methods, it is characterized in that, when described RNC adjusts described forward access channel transmitting power, may further comprise the steps:
D1, described RNC judge at the report cycle that calls time on measuring whether this report cycle expires, if this report cycle expires, and execution in step d2, otherwise continue to wait for report cycle;
D2, described RNC periodically detect the qos measurement report information that described UE reports according to the measurement control that issues at described forward access channel; When sense cycle finishes, according to the quality information group that measuring amount record in this sense cycle obtains, judge that at first whether service quality value that this UE reports is greater than described thresholding B, if the service quality value that this UE reports is greater than described thresholding B, execution in step d6 then, otherwise execution in step d3;
D3, judge that whether service quality value that all described UE report is all less than described thresholding A, if the service quality value that all described UE report is all less than described thresholding A, execution in step d4; Otherwise execution in step d9;
D4, described RNC trigger the downward modulation to the transmitting power of described forward access channel;
The court verdict of the qos measurement report information that d5, described RNC report according to described UE is adjusted the transmitting power of described forward access channel by the field in the wireless parameter updating message of user's face;
D6, described RNC determine that the described UE number that service quality value that described UE reports is higher than described thresholding B is N1;
Whether d7, described RNC judge number N1 greater than the described thresholding that sets in advance, if N1 greater than this thresholding that sets in advance, execution in step d8, otherwise, execution in step d9;
D8, described RNC trigger the rise to the transmitting power of described forward access channel, execution in step d5;
The arrival of d9, the next described report cycle of judging of wait; Execution in step d1 restarts to judge flow process.
7. as claim 1,2,3 or 5 described methods, it is characterized in that, in described sub-district to just when the UE of receiving multimedia broadcast multicast service number is judged, if count results is not less than the thresholding that sets in advance, then recover the power configuration of sub-district all standing, and close the measurement control needs of having opened, with all described UE Idle state of moving back.
8. method as claimed in claim 6 is characterized in that, in the described steps d 2, described sense cycle is the integral multiple of described report cycle, and this sense cycle long measure is a second level.
9. method as claimed in claim 6 is characterized in that, in the described steps d 4, the amplitude of described downward modulation is a fixed step size, or variable adaptive step.
10. method as claimed in claim 6 is characterized in that, in the described steps d 8, the amplitude of described rise is a fixed step size; Or the variation of the service quality value that reports according to described UE carries out the self adaptation adjustment, up to the performance number that reaches the sub-district all standing.
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| CNA2007100900397A CN101272164A (en) | 2007-03-23 | 2007-03-23 | Forward access channel closed-loop power control method of multimedia broadcast multicast service |
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| CNA2007100900397A CN101272164A (en) | 2007-03-23 | 2007-03-23 | Forward access channel closed-loop power control method of multimedia broadcast multicast service |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137478A (en) * | 2011-04-20 | 2011-07-27 | 大唐移动通信设备有限公司 | Method, system and device for reporting and transferring power information and regulating power |
| CN102223657A (en) * | 2011-07-22 | 2011-10-19 | 电信科学技术研究院 | Method, system and equipment for configuring and reporting QoS (quality of service) |
| CN102281570A (en) * | 2010-06-09 | 2011-12-14 | 电信科学技术研究院 | Measurement control method and equipment |
| CN102695196A (en) * | 2012-06-07 | 2012-09-26 | 鼎桥通信技术有限公司 | Method for controlling measurement tasks |
| CN103428222A (en) * | 2013-08-27 | 2013-12-04 | 上海数字电视国家工程研究中心有限公司 | Information distributing system and method |
-
2007
- 2007-03-23 CN CNA2007100900397A patent/CN101272164A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281570A (en) * | 2010-06-09 | 2011-12-14 | 电信科学技术研究院 | Measurement control method and equipment |
| CN102281570B (en) * | 2010-06-09 | 2014-03-19 | 电信科学技术研究院 | Measurement control method and equipment |
| CN102137478A (en) * | 2011-04-20 | 2011-07-27 | 大唐移动通信设备有限公司 | Method, system and device for reporting and transferring power information and regulating power |
| CN102223657A (en) * | 2011-07-22 | 2011-10-19 | 电信科学技术研究院 | Method, system and equipment for configuring and reporting QoS (quality of service) |
| CN102223657B (en) * | 2011-07-22 | 2013-08-07 | 电信科学技术研究院 | Method, system and equipment for configuring and reporting QoS (quality of service) |
| CN102695196A (en) * | 2012-06-07 | 2012-09-26 | 鼎桥通信技术有限公司 | Method for controlling measurement tasks |
| CN102695196B (en) * | 2012-06-07 | 2016-04-06 | 鼎桥通信技术有限公司 | The control method of measurement task |
| CN103428222A (en) * | 2013-08-27 | 2013-12-04 | 上海数字电视国家工程研究中心有限公司 | Information distributing system and method |
| CN103428222B (en) * | 2013-08-27 | 2016-07-06 | 上海数字电视国家工程研究中心有限公司 | Information distribution system and method |
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Application publication date: 20080924 |