CN1996777A - Dynamic channel adjusting method of the uplink time slot of the time division multiplexing and code division multi-address access system - Google Patents
Dynamic channel adjusting method of the uplink time slot of the time division multiplexing and code division multi-address access system Download PDFInfo
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- CN1996777A CN1996777A CNA2006100001156A CN200610000115A CN1996777A CN 1996777 A CN1996777 A CN 1996777A CN A2006100001156 A CNA2006100001156 A CN A2006100001156A CN 200610000115 A CN200610000115 A CN 200610000115A CN 1996777 A CN1996777 A CN 1996777A
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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
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Abstract
This invention discloses one time division complex multi-address interface system time gap dynamic signal channel adjusting method, which comprises the following steps: setting the upper gate and down gate for times for each business; computing each business even repeat times; RNC receives UE data frame and each repeat time; when certain even mixture repeat times is larger than the upper gate, elevating the power; when less than, lowering the power; sending the power bias to base station and user device.
Description
Technical field
The present invention relates to a kind of dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot.
Background technology
In the WCDMA communication system, in order to overcome the decline of wireless signal, guarantee certain quality of service, must carry out closed power control.Closed power control in the WCDMA system is divided into two parts: inner loop power control and exterior ring power control.Inner loop power control is that each time slot at physical channel carries out, and is a kind of fast power control procedure.Exterior ring power control is the quality objective of setting inner loop power control according to the transmission quality of reality, is a kind of power control process at a slow speed.Power with up direction is controlled to be example below, briefly introduces the closed power control procedure in the WCDMA system.Up inner loop power control is finished jointly by subscriber equipment (UE) and base station (Node B), its process is: Node B measures the signal noise power ratio (SIR) of uplink physical channel in real time, and compare with the target SIR of prior setting, if the SIR of actual measurement is less than target SIR, illustrate that uplink signal-channel quality is poor, improve the transmitting power of up channel by the in-band signalling notice UE of physical channel at next time slot.Otherwise better than what expect if the SIR of actual measurement, illustrates channel quality greater than target SIR, notice UE reduces transmitting power at next time slot, so that save power resource, reduces interference, improves power system capacity.Ascending exterior ring power control is finished jointly by Node B and radio network controller (RNC), and whether its process is: Node B sends to RNC with the upstream data bag of receiving, and indicate this packet to be correctly decoded, and promptly whether this packet is wrong bag; RNC adds up the Block Error Rate of up channel with this, if Block Error Rate is lower than the target Block Error Rate, illustrates that channel quality is relatively good, then notifies Node B downward modulation target SIR, otherwise, raise target SIR.The process of WCDMA system closed power control such as attached illustrated in figures 1 and 2.
In 3GPP R99 version, closed power control is carried out at dedicated channel DCH (Dedicated Channel).In 3GPP R99 version, introduce special uplink channel E-DCH (Enhanced DCH) technology that strengthens.E-DCH adopts the ascending grouping scheduling of Node B control and physical layer to mix (HARQ) technology that retransmits automatically, can improve the capacity of system and single user's throughput greatly.E-DCH has introduced two new uplink special physical channel E-DPCCH and E-DPDCH.E-DPCCH is used to carry the schedule information and the HARQ retransmission information of physical layer, and E-DPDCH is used to carry uplink business data.The transmitting power of E-DPCCH and E-DPDCH is to use the form with respect to the power excursion of DPCCH to be configured.When the power of DPCCH changed, the power of E-DPCCH and E-DPDCH also changed thereupon, but E-DPCCH and E-DPDCH are constant with respect to the power excursion of DPCCH.This shows that to the closed power control that DCH carries out, also influenced the power of E-DCH simultaneously, i.e. the power of DCH and E-DCH is adjusted in the closed power of DCH control simultaneously.For E-DCH, RNC can also decode according to the E-DCH that Node B reports, and failure is indicated and the number of retransmissions of E-DCH packet is dynamically adjusted the target SIR that exterior ring power is controlled.
E-DPDCH adopts the two stage power skew: one-level is to all professional identical power excursions, is expressed as Δ
E-DPDCHAnother grade is the power excursion of different MAC-D Flow, is expressed as Δ
Harq, it is the attribute of MAC-D Flow, is that the QoS according to loaded service on the MAC-D Flow disposes.As shown in Figure 3, the process of DCH that introduces from above and E-DCH external circule power control as can be known, the power of E-DPDCH can dynamically be adjusted along with the channel quality of DCH or E-DCH, the performance number of E-DPDCH is represented with P_E-DPDCH, the P_E-DPDCH=P_DPCCH+ Δ
E-DPDCH+ Δ
HarqBut this adjustment does not embody the requirement of different business for QoS (service quality) at all business; On the other hand, E-DCH adopts physical layer to mix automatic retransmission technique (HARQ), HARQ has reduced professional population mean time delay by the re-transmission of physical layer, and for the insensitive business of some time delays, if can reduce transmitting power by suitable increase number of retransmissions, just can reduce uplink interference, improve power system capacity.
Summary of the invention
Existing problem and shortage in the dynamic channel adjusting method at above-mentioned existing time division multiplex code division multiple access system ascending time slot, the purpose of this invention is to provide and a kind ofly can improve power system capacity, guarantee the dynamic channel adjusting method of different business for the time division multiplex code division multiple access system ascending time slot of QoS demand.
The present invention is achieved in that a kind of dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot, may further comprise the steps:
(1) is each business setting number of retransmissions Upper threshold and number of retransmissions Lower Threshold;
(2) time window is set, and calculates the average repeat time of each professional E-DCH in time window;
(3) radio network controller is accepted the E-DCH Frame of base station;
(4), the power excursion of business is raised when the average mixed automatic retransmission time of a certain business during greater than the number of retransmissions Upper threshold of described business;
(5) when the average mixing of a certain business retransmits number of words automatically less than the number of retransmissions Lower Threshold of described business, with the power excursion downward modulation of business;
(6) power excursion after will changing sends to base station and subscriber equipment, returns step (3).
Wherein, described method is further comprising the steps of:
Be each business setting power excursion maximum and power excursion minimum value;
Wherein, described step (4) is specially:
(A) judge that whether the average repeat time of a certain business is greater than the number of retransmissions Upper threshold;
(B) if greater than the number of retransmissions Upper threshold, then the power excursion with business raises, otherwise enters step (5);
(C) whether the power excursion after the change if then step finish, otherwise enters step (6) greater than the power excursion maximum in the determining step (B).
Wherein, described step (5) is specially:
(a) judge that whether the average repeat time of a certain business is less than the number of retransmissions Lower Threshold;
(b), then the power excursion of business is reduced if less than the number of retransmissions Lower Threshold;
(c) whether the power excursion after the change is less than the power excursion minimum value in the determining step (b), if then enter step (6), otherwise step finishes.
Wherein, described method is further comprising the steps of:
A power control shielding timer is set.
Wherein, described step (3) is specially:
(I) radio network controller begins to accept the E-DCH Frame of base station;
(II) judge whether described power control shielding timer is overtime, if overtime then enter step (3), otherwise would return step (I).
The dynamic channel adjusting method of the time division multiplex code division multiple access system ascending time slot that the present invention proposes compared with prior art, can carry out the power excursion adjustment respectively to each business, demand according to different business disposes respectively, make ageing high business obtain higher power excursion, and the lower power excursion of the traffic assignments at the ageing end improves power system capacity under the situation that does not increase transmitting power.
Description of drawings
Fig. 1 is an inner loop power control schematic diagram;
Fig. 2 is a DCH exterior ring power control schematic diagram;
Fig. 3 is an E-DPDCH power excursion computing formula schematic diagram;
Fig. 4 is the E-DCH power decreasing flow chart in the preferred embodiment of the present invention;
Fig. 5 is that the E-DCH power in the preferred embodiment of the present invention raises flow chart.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The preferred embodiment of the present invention may further comprise the steps:
(1) is each business setting number of retransmissions Upper threshold and number of retransmissions Lower Threshold;
(2) be each business setting power excursion upper limit and power excursion lower limit;
(3) a power control shielding timer is set, before described power control shielding timer expiry, do not carry out new power excursion adjustment, because the adjustment of power excursion need be carried out reprovision to base station and subscriber equipment, therefore need certain time delay just the result who adjusts can be reflected at radio network controller (RNC);
(4) radio network controller (RNC) begins to accept to receive the E-DCH Frame of base station (Node B);
(5) RNC judges whether to be in the power control shielding cycle, if then enter step (6), otherwise enters step (7);
(7) RNC judges the data that comprise those professional MAC-dFlow according to the information in the described E-DCH Frame;
(8) with described professional corresponding timing statistics window to front slide one lattice, and add up the average repeat time of MAC-DFlow in time window of described business;
(9) average repeat time of described business and the number of retransmissions Upper threshold of described business are compared,, otherwise enter step (11) if described average repeat time greater than described number of retransmissions Upper threshold, then enters step (10):
(10) power excursion of described business is raised a step-length, and will change afterwards new power and the power excursion upper limit of described business compares, if greater than would return step (4), if less than entering step (13);
(11) average repeat time of described business and the number of retransmissions Lower Threshold of described business are compared,, otherwise return step (4) if described average repeat time less than described number of retransmissions Lower Threshold, then enters step (12):
(12), and will change afterwards new power and the power excursion lower limit of described business compares with step-length of the power excursion of described business downward modulation, if greater than would enter step (13), if less than would return step (4);
(13) will change the new power excursion in back and send to base station and subscriber equipment, return step (4).
The flow process of E-DCH power excursion downward modulation as shown in Figure 4, step is as follows:
1.RNC receive the E-DCH Frame of NodeB;
2.RNC judge whether to be in the power control shielding cycle, if execution in step 3, otherwise execution in step 4;
3. the not adjustment of power skew is returned;
4.RNC according to the data that comprise which MAC-D Flow in the information judgment data frame in the Frame;
5. the timing statistics window is added up the corresponding average repeat time of MAC-D Flow in time window to front slide one lattice;
6. judge whether the downward modulation number of retransmissions thresholding of the average repeat time of MAC-D Flow less than this MAC-D Flow, if execution in step 7, otherwise execution in step 3;
7. a step-length P_Step_down of power excursion downward modulation that will need the MAC-D Flow that adjusts, in this preferred embodiment, P_Step_down=0.5dB;
8. judge adjusted power excursion whether greater than the minimum value of the power excursion of this MAC-D Flow, if execution in step 9, otherwise execution in step 3;
9. the power excursion configuration that notice Node B and UE are new;
10. starting power control shielding timer is provided with the shielding cycle to be designated as TRUE; Empty statistical counter.The flow process that the E-DCH power excursion raises as shown in Figure 5, step is as follows:
A.RNC receives the E-DCH Frame of Node B;
B.RNC judges whether to be in the power control shielding cycle, if execution in step 3, otherwise execution in step 4;
C. the not adjustment of power skew is returned;
D.RNC is according to the data that comprise which MAC-D Flow in the information judgment data frame in the Frame;
E. the timing statistics window is added up the corresponding average repeat time of MAC-D Flow in time window to front slide one lattice;
F. judge whether the rise number of retransmissions thresholding of the average repeat time of MAC-D Flow greater than this MAC-D Flow, if execution in step 7, otherwise execution in step 3;
G. will need the power excursion of the MAC-D Flow that adjusts to raise a step-length P_Step_up, P_Step_up=1dB in this preferred embodiment
H. judge adjusted power excursion whether less than the maximum of the power excursion of this MAC-D Flow, if execution in step 9, otherwise execution in step 3;
I. notify Node B and UE new power excursion configuration;
J. starting power control shielding timer is provided with the shielding cycle to be designated as TRUE; Empty statistical counter.
Claims (6)
1, a kind of dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot is characterized in that, said method comprising the steps of:
(1) is each business setting number of retransmissions Upper threshold and number of retransmissions Lower Threshold;
(2) time window is set, and calculates the average repeat time of each professional E-DCH in time window;
(3) radio network controller is accepted the E-DCH Frame of base station;
(4), the power excursion of business is raised when the average mixed automatic retransmission time of a certain business during greater than the number of retransmissions Upper threshold of described business;
(5) when the average mixing of a certain business retransmits number of words automatically less than the number of retransmissions Lower Threshold of described business, with the power excursion downward modulation of business;
(6) power excursion after will changing sends to base station and subscriber equipment, returns step (3).
2, the dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot according to claim 1 is characterized in that, described method is further comprising the steps of:
Be each business setting power excursion maximum and power excursion minimum value.
3, the dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot according to claim 2 is characterized in that, described step (4) is specially:
(A) judge that whether the average repeat time of a certain business is greater than the number of retransmissions Upper threshold;
(B) if greater than the number of retransmissions Upper threshold, then the power excursion with business raises, otherwise enters step (5);
(C) whether the power excursion after the change if then step finish, otherwise enters step (6) greater than the power excursion maximum in the determining step (B).
4, the dynamic channel adjusting method of time division multiplex code division multiple access system ascending time slot according to claim 2 is characterized in that, described step (5) is specially:
(a) judge that whether the average repeat time of a certain business is less than the number of retransmissions Lower Threshold;
(b), then the power excursion of business is reduced if less than the number of retransmissions Lower Threshold;
(c) whether the power excursion after the change is less than the power excursion minimum value in the determining step (b), if then enter step (6), otherwise step finishes.
5, according to the dynamic channel adjusting method of each described time division multiplex code division multiple access system ascending time slot in claim 1 or 2 or 3 or 4, it is characterized in that described method is further comprising the steps of:
A power control shielding timer is set.
6, according to claim 5, described step (3) is specially:
(I) radio network controller begins to accept the E-DCH Frame of base station;
(II) judge whether described power control shielding timer is overtime, if overtime then enter step (3), otherwise would return step (I).
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100001156A CN1996777A (en) | 2006-01-04 | 2006-01-04 | Dynamic channel adjusting method of the uplink time slot of the time division multiplexing and code division multi-address access system |
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| CNA2006100001156A CN1996777A (en) | 2006-01-04 | 2006-01-04 | Dynamic channel adjusting method of the uplink time slot of the time division multiplexing and code division multi-address access system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036326A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
| CN103401591A (en) * | 2007-08-13 | 2013-11-20 | 朗讯科技公司 | Method for control channel transmission with persistent scheduling |
| US8954862B1 (en) | 2008-10-01 | 2015-02-10 | Valador, Inc. | System and method for collaborative viewing of a four dimensional model requiring decision by the collaborators |
| US10841042B2 (en) | 2016-07-19 | 2020-11-17 | Huawei Technologies Co., Ltd. | Method and apparatus for providing hybrid automatic repeat request (HARQ) transmission, to meet transmissions requirements of different services |
| CN112135348A (en) * | 2019-06-24 | 2020-12-25 | 中国电信股份有限公司 | Uplink data transmission method, device, base station and storage medium |
-
2006
- 2006-01-04 CN CNA2006100001156A patent/CN1996777A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401591A (en) * | 2007-08-13 | 2013-11-20 | 朗讯科技公司 | Method for control channel transmission with persistent scheduling |
| US8954862B1 (en) | 2008-10-01 | 2015-02-10 | Valador, Inc. | System and method for collaborative viewing of a four dimensional model requiring decision by the collaborators |
| CN102036326A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
| CN102036326B (en) * | 2009-09-25 | 2014-12-24 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
| US10841042B2 (en) | 2016-07-19 | 2020-11-17 | Huawei Technologies Co., Ltd. | Method and apparatus for providing hybrid automatic repeat request (HARQ) transmission, to meet transmissions requirements of different services |
| CN112135348A (en) * | 2019-06-24 | 2020-12-25 | 中国电信股份有限公司 | Uplink data transmission method, device, base station and storage medium |
| CN112135348B (en) * | 2019-06-24 | 2023-05-05 | 中国电信股份有限公司 | Uplink data transmission method, device, base station and storage medium |
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Application publication date: 20070711 |