CN100512043C - Control method for uplink transmission power in accessing upward packets in high speed - Google Patents
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- CN100512043C CN100512043C CNB2006100911503A CN200610091150A CN100512043C CN 100512043 C CN100512043 C CN 100512043C CN B2006100911503 A CNB2006100911503 A CN B2006100911503A CN 200610091150 A CN200610091150 A CN 200610091150A CN 100512043 C CN100512043 C CN 100512043C
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Abstract
The method for controlling upgoing transmission power includes steps: when deciding to send service data, user equipment (UE) also decides to send scheduling information (SI), and make sure that self is in soft switching state; determining bias power of service data to be sent, and bias power of SI to be sent; calculating summation of bias power of service data to be sent and bias power of SI to be sent so as to obtain total bias power. Based on total bias power, the invention determines upgoing transmission power. The disclosed method raises quality for sending SI so as to guarantee service cell can receive SI correctly.
Description
Technical field
The present invention relates to power control techniques, be meant a kind of uplink transmission power control method in high speed uplink packet access (HSUPA) especially.
Background technology
HSUPA is the up-high speed data service enhancement techniques of Wideband Code Division Multiple Access (WCDMA) (WCDMA).The HSUPA technology adopts fast and retransmits, mixes and retransmits (HARQ) automatically and finish transmitting uplink data function at a high speed based on the distributed control method of base station.HSUPA has increased by two channels in up link: Dedicated Physical Data Channel of enhancing (E-DPDCH) and the Dedicated Physical Control Channel (E-DPCCH) that strengthens.
HSUPA supports soft handover, and promptly a subscriber equipment (UE) can simultaneously be set up wireless connections with a plurality of sub-districts, and the set of a plurality of sub-districts that described and UE are connected simultaneously is called Active Set, and a sub-district in the Active Set is set to Serving cell.
UE sends business datum by E-DPDCH to the base station, the data of all sub-districts demodulation simultaneously UE emission in the Active Set of this UE, and send to confirm (ACK) or non-affirmation (NACK) indication to UE according to demodulation result, simultaneously correct demodulating data is sent to radio network controller (RNC).As long as UE receives the ack signal that one of them sub-district sends and just thinks that data are correctly received by network side, thus the transmission of startup new data, otherwise, will retransmit old data.Under soft changing state,, think that then this data transfer is successful as long as the data of a correct demodulation UE emission in sub-district are arranged.Because the wireless channel of UE and different districts has certain independence, the probability that data are correctly transmitted under soft changing state promptly has soft handover gain greater than the situation of having only wireless connections.Therefore, under soft changing state, UE can use relatively low uplink transmission power just can obtain with the single-link situation under identical transmission rate.
The transmitting power of the uplink transmission power E-DPDCH of UE when network sends business datum is the power bias that increases business datum to be sent on the power basis at DPCCH.Usually, network is passed to UE with the rated output relevant parameter of setovering, and according to the size of packet and the concrete professional rated output biasing that requires, and increases the power bias that is calculated by UE on the power basis of DPCCH, determines the transmitting power of E-DPDCH.
The HSUPA technology also provides scheduling feature, avoids too much UE to insert too high speed by the scheduling of HSUPA, thereby suppresses uplink interference as far as possible.When wishing to obtain higher data rate, UE sends to base station initiation dispatch request, perhaps UE is when the base station feedback scheduling result, UE need send schedule information (SI) to the base station, carries the available horsepower of UE, the information that the scheduling such as data volume in the transmission buffer area need among the SI.SI can launch on E-DPDCH with business datum, also can launch on E-DPDCH separately.But because the scheduling of HSUPA is mainly finished by the Serving cell of this UE in the base station, having only the Serving cell of this UE to receive SI can dispatch according to information wherein, if non-service cell receives SI then directly abandons, therefore, under soft changing state, be not have soft handover gain at SI.
In HSUPA, when UE was in soft changing state and need send SI when sending business datum, UE was added in the transmitting power that obtains E-DPDCH on the DPCCH power according to the size and concrete professional the requiring of packet after the rated output biasing.
In present prior art, when under soft changing state, sending SI in the transmission business datum, just according to the biasing of business datum rated output and determine the transmitting power of E-DPDCH, and not do not readjust the transmitting power of E-DPDCH because of the transmission of SI, therefore, can not guarantee the transmission quality of SI, thereby can not guarantee that Serving cell can correctly receive SI, Serving cell can not effectively respond the dispatch request of UE or receive the feedback of UE to scheduling result like this, influences the HSUPA The Application of Technology.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of uplink transmission power control method in HSUPA, in the time of when UE sends business datum under soft changing state when, need sending SI, improve the transmission quality of SI, thereby guarantee that Serving cell can correctly receive SI.
In order to achieve the above object, the invention provides a kind of uplink transmission power control method in HSUPA, this method comprises:
UE determines to send schedule information SI when sending business datum, and determine self to be in soft changing state, then determine the power bias of SI to be sent, determine the power bias of business datum to be sent according to packet size and business need, and calculate the power bias of business datum to be sent and the power bias sum of SI to be sent obtains total power bias, determine the transmitting power of the Dedicated Physical Data Channel E-DPDCH that strengthens according to total power bias.
Described UE determines further to comprise before the power bias of SI to be sent: the power bias parameter of network configuration SI, and the power bias parameter of SI is handed down to UE;
Described UE determines that the power bias of SI to be sent is: UE determines the power bias of SI to be sent from the power bias parameter of network reception SI according to the power bias parameter of SI.
The power bias parameter of described network configuration SI also is handed down to UE and is: the power bias of the SI under the network configuration soft changing state also is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE will be from the power bias of the SI under the received soft changing state of the network power bias as SI to be sent.
The power bias parameter of described network configuration SI also is handed down to UE and is: network based each soft handover branches number disposes the power bias of corresponding SI respectively and is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE determines the soft handover branches number, and from the power bias of the SI of each received soft handover branches number correspondence of network, the power bias of SI of selecting determined soft handover branches number correspondence is as the power bias of SI to be sent.
Set in advance the calculated relationship between the power bias parameter of the power bias of SI and SI;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE is according to described calculated relationship, utilizes the power bias calculation of parameter of the SI that receives from network to obtain the power bias of SI to be sent.
Described calculated relationship is: the unit power biasing is the power bias of SI with amassing of soft handover branches number;
The power bias parameter of described network configuration SI also is handed down to UE and is: the biasing of network configuration unit power also is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE is according to described calculated relationship, at first determine the soft handover branches number, calculate then from the received unit power biasing of network and amass, obtain the power bias of SI to be sent with determined soft handover branches number is.
Described network is handed down to UE with the power bias parameter of SI: network is carried at the power bias parameter of SI and is handed down to UE in the configuration signal;
Described UE from the power bias parameter that network receives SI is: UE obtains the power bias parameter of SI from configuration signal.
Described configuration signal is: business is set up the signaling in the process, or Radio Link set up signaling in the process or the signaling in the reconfiguration course of Radio Link.
The power bias parameter of described network configuration SI also is handed down to UE and is: network is determined the soft handover branches number of UE, and calculates the power bias of SI and be handed down to UE according to the soft handover branches number of this UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE will be from the power bias of the received SI of the network power bias as SI to be sent.
Network based each soft handover branches number disposes the power bias of corresponding SI respectively;
The power bias parameter of described network configuration SI also is handed down to UE and is: network is determined the soft handover branches number of UE, and selects the power bias of SI of the soft handover branches number correspondence of determined UE to be handed down to UE from the power bias of the SI that disposed.
Described network is handed down to UE with the power bias parameter of SI: network is carried at the power bias parameter of SI in the activating set updating message and is handed down to UE;
Described UE from the power bias parameter that network receives SI is: UE obtains the power bias parameter of SI from activating set updating message.
The total power bias of described basis determines that the transmitting power of the Dedicated Physical Data Channel E-DPDCH of enhancing is: add the above total power bias on the basis of DPCCH power, obtain the transmitting power of E-DPDCH.
According to method provided by the invention, when UE is in soft changing state and send SI when sending business datum, the power bias that increases SI on the power bias basis of business datum is adjusted uplink transmission power, therefore, improve the transmission quality of SI, thereby can guarantee that Serving cell can correctly receive SI, further can effectively respond the dispatch request of UE or receive the feedback of UE, improve the service quality of HSUPA the result of scheduling.The power bias of the SI that UE is increased when adjusting uplink transmission power is to determine according to network configuration and the power bias parameter that is handed down to the SI of UE, and the power bias parameter of network configuration SI can have various ways, also can be handed down to UE by number of ways, for example, when issuing by configuration signal, UE can determine that the power bias of SI adjusts transmitting power according to self soft changing state and soft handover branches number; When issuing by activating set updating message, by the power bias parameter of the residing soft changing state real-time update of network based UE SI, the parameter that UE directly issues according to network is adjusted transmitting power and is got final product, therefore, according to concrete applicable cases, can adjust uplink transmission power neatly.
Description of drawings
Figure 1 shows that the flow chart of realizing the control of E-DPDCH transmitting power in the embodiment of the invention one;
Figure 2 shows that the flow chart of realizing the control of E-DPDCH transmitting power in the embodiment of the invention two.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, lift specific embodiment below, the present invention is further detailed explanation.
The general thought of uplink transmission power control method provided by the invention is: when UE determines to send SI when sending business datum, and when determining self to be in soft changing state, UE determines the power bias of business datum to be sent and the power bias of SI to be sent, calculate the power bias of business datum to be sent and the power bias sum of SI to be sent and obtain total power bias, determine uplink transmission power according to total power bias.Uplink transmission power of the present invention is the transmitting power of the up E-DPDCH that HSUPA increased.
Among the present invention, UE determine SI to be sent power bias the specific implementation method can for: UE self can calculate its power bias according to SI; Perhaps, by the power bias parameter of network configuration SI, and the power bias parameter of SI is handed down to UE, UE can determine the power bias of SI to be sent according to the power bias parameter of the SI of network configuration.Wherein, the power bias parameter of the SI of network configuration can have various ways, and network can be handed down to UE with the power bias parameter of the S1 of self configuration by configuration signal or activating set updating message.Introduce the implementation method of uplink transmission power control of the present invention below respectively in detail with embodiment one and embodiment two.
Embodiment one:
Transmit power controlling method when the power bias parameter that embodiment one carries the SI of self configuration for network by configuration signal is handed down to UE.Figure 1 shows that the flow process that realizes the control of E-DPDCH transmitting power in the present embodiment, comprise following step:
Step 101: when network is determined business is mapped to HSUPA and goes up, the power bias parameter of network configuration SI, and the power bias parameter of SI is carried at is handed down to UE in the configuration signal.
Described configuration signal is meant the foundation of business or Radio Link or the signaling in the reconfiguration course, and for example radio bearer foundation (RB setup), radio bearer are reshuffled (RB reconfig), physical channel is reshuffled signalings such as (PHY channel reconfig).
According to concrete application scenarios, the power bias parameter of the SI that network disposed can be various ways, is respectively as described below:
101-a: network directly disposes the power bias of SI under the soft changing state.When UE need send business datum, send SI, and UE is when being in soft changing state, no matter how many soft handover branches numbers is, UE can be directly with the power bias of the SI of network configuration power bias as SI to be sent.
101-b: network based each different soft handover branches number disposes the power bias of corresponding SI respectively.When transmission SI and UE were in soft changing state when UE need send business datum, UE can select the power bias of the power bias of corresponding SI as SI to be sent according to the soft handover branches number.
101-c: network and UE set in advance the calculated relationship between the power bias parameter of the power bias of SI and SI.When calculating the power bias of SI according to the calculated relationship that sets in advance, the power bias parameter of the SI that comprises in the described calculated relationship of network configuration.For example, calculated relationship is Po=N * Δ Po, and wherein Δ Po is the unit power biasing of a corresponding soft handover branches, and this Δ Po parameter need and be handed down to UE by network configuration; N is the soft handover branches number; Po is the power bias of SI.UE concerns according to aforementioned calculation, utilizes the Δ Po of network configuration and soft handover branches number N just can obtain the power bias Po of corresponding soft handover branches number for the SI of N.The calculated relationship that sets in advance at this usefulness is calculated the situation of the power bias of SI, when issuing the power bias parameter of SI to UE, network can issue the instruction of calculating the power bias of SI with the calculated relationship that sets in advance to UE, perhaps, in specific implementation, can arrange UE in advance and calculate the power bias of SI with the calculated relationship that sets in advance, at this moment, network does not just need to issue the instruction of calculating the power bias of SI with the calculated relationship that sets in advance.Described calculated relationship can also adopt more complicated relational expression, and wherein the power bias parameter of SI it is also conceivable that the factor of the various SI of influence power bias and determines.
Step 102:UE judges when sending business datum whether need to send SI, if then execution in step 103; Otherwise the power bias that calculates business datum to be sent is also determined the transmitting power of E-DPDCH, process ends.
Step 103:UE judges self current soft changing state that whether is in, if then execution in step 104; Otherwise, determine the transmitting power of E-DPDCH, process ends.The situation that this UE is not in soft changing state does not belong to the scope that the present invention discusses, and the descriptions thereof are omitted at this.
Step 104:UE determines the power bias of SI to be sent according to the power bias parameter of the SI that carries the configuration signal that receives from network.
As described in step 101, the power bias parameter of the SI that network disposed has various ways, therefore, also can determine the power bias of SI to be sent in this step 104 with diverse ways.Corresponding with 101-a, 101-b, 101-c three seed ginseng number form formulas in the step 101, the power bias of determining SI to be sent is respectively with step 104-a, step 104-b, and step 104-c realizes.
Step 104-a:UE obtains the power bias of SI under the soft changing state from the configuration signal that network receives, with the power bias of SI under the soft changing state that is obtained directly as the power bias of SI to be sent.
Step 104-b:UE determines the soft handover branches number, selects the power bias of the power bias of the SI corresponding with determined soft handover branches number as SI to be sent in the power bias parameter of the SI that carries then from the configuration signal that network receives.UE determines that the method for soft handover branches number is: because in present agreement, specify a power control command word (TPC) for each Radio Link in the activating set updating message and merge index value, UE merges index value according to TPC just can determine the soft handover branches number.
Step 104-c:UE obtains the power bias parameter of SI from the configuration signal that network receives, and calculates the power bias of SI to be sent according to the calculated relationship that sets in advance.For example, when the calculated relationship of rated output biasing is Po=N * Δ Po, UE also needs to determine the soft handover branches number N, obtains the power bias parameter Δ Po of SI then from the configuration signal that network receives, and calculates SI power bias Po to be sent according to calculated relationship Po=N * Δ Po.
Step 105:UE calculates the power bias of business datum to be sent according to packet size and business need.This step can be before determining the E-DPDCH transmitting power any one carry out constantly.
Step 106:UE calculates the power bias sum of the power bias and the SI to be sent of business datum to be sent, obtains total power bias of business datum to be sent and SI.
Step 107: on the power basis of DPCCH, add total power bias that step 106 obtains, determine the transmitting power of current E-DPDCH.
In the present embodiment one, by configuration signal the power bias parameter of SI is handed down to UE, and determines current transmitting power according to situation and soft changing state that self sends SI by UE by network.The power bias parameter of the SI that UE can issue network can also suitably be adjusted the power bias of SI as a reference according to the situation of self.
Embodiment two:
Transmit power controlling method when the power bias parameter that embodiment two carries the SI of self configuration for network by activating set updating message is handed down to UE.Figure 2 shows that the flow process that realizes the control of E-DPDCH transmitting power in the present embodiment, comprise following step:
Step 201: when network monitor when the Active Set sub-district of UE changes, network is determined the soft handover branches number of this UE, and calculates the power bias of SI according to the soft handover branches number of this UE, and is carried at activating set updating message and is handed down to UE.Perhaps, network can each different soft handover branches numbers of pre-configured correspondence the power bias of SI, when network monitor when the Active Set sub-district of UE changes, the soft handover branches number of network based this UE is directly selected the power bias of corresponding SI, and is carried at activating set updating message and is handed down to UE.
Step 202:UE judges when sending business datum whether need to send SI, if then execution in step 203; Otherwise the power bias that calculates business datum to be sent is also determined the transmitting power of E-DPDCII, process ends.
Step 203:UE obtains the power bias of the power bias of SI as SI to be sent from activating set updating message.
Step 204:UE calculates the power bias of business datum to be sent according to packet size and business need.The power bias computational methods of this step 204 described business datums belong to prior art, and this step can be before determining the E-DPDCH transmitting power, and any one is carried out constantly.
Step 205:UE calculates the power bias sum of the power bias and the SI to be sent of business datum to be sent, obtains total power bias of business datum to be sent and SI.
Step 206: on the power basis of DPCCH, add total power bias that step 205 obtains, determine the transmitting power of current E-DPDCH.
In the present embodiment two,, promptly can know current soft changing state that is in of UE and soft handover branches number in real time, and when the Active Set of UE changes, can send activating set updating message to UE because network can be known the variation of the Active Set of UE in real time.Therefore, be handed down to UE by activating set updating message behind the power bias that has calculated SI by soft changing state and the soft handover branches number of network based UE, do not get final product and UE does not need to judge the soft changing state that self is in and soft handover branches number directly obtain SI from activating set updating message power bias.By present embodiment two described methods, can be when network side adopts method adjustment more flexibly to have SI to send the E-DPDCH transmitting power.
Among the above embodiment, the configuration of the power bias parameter of SI specifically can be finished by RNC, is handed down to UE by RNC by the base station.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind of uplink transmission power control method in high speed uplink packet inserts is characterized in that this method comprises:
User equipment (UE) determines to send schedule information SI when sending business datum, and determine self to be in soft changing state, then determine the power bias of SI to be sent, determine the power bias of business datum to be sent according to packet size and business need, and calculate the power bias of business datum to be sent and the power bias sum of SI to be sent obtains total power bias, determine the transmitting power of the Dedicated Physical Data Channel E-DPDCH that strengthens according to total power bias.
2, method according to claim 1 is characterized in that,
Described UE determines further to comprise before the power bias of SI to be sent: the power bias parameter of network configuration SI, and the power bias parameter of SI is handed down to UE;
Described UE determines that the power bias of SI to be sent is: UE determines the power bias of SI to be sent from the power bias parameter of network reception SI according to the power bias parameter of SI.
3, method according to claim 2 is characterized in that,
The power bias parameter of described network configuration SI also is handed down to UE and is: the power bias of the SI under the network configuration soft changing state also is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE will be from the power bias of the SI under the received soft changing state of the network power bias as SI to be sent.
4, method according to claim 2 is characterized in that,
The power bias parameter of described network configuration SI also is handed down to UE and is: network based each soft handover branches number disposes the power bias of corresponding SI respectively and is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE determines the soft handover branches number, and from the power bias of the SI of each received soft handover branches number correspondence of network, the power bias of SI of selecting determined soft handover branches number correspondence is as the power bias of SI to be sent.
5, method according to claim 2 is characterized in that, sets in advance the calculated relationship between the power bias parameter of the power bias of SI and SI;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE is according to described calculated relationship, utilizes the power bias calculation of parameter of the SI that receives from network to obtain the power bias of SI to be sent.
6, method according to claim 5 is characterized in that, described calculated relationship is: the unit power biasing is the power bias of SI with amassing of soft handover branches number;
The power bias parameter of described network configuration SI also is handed down to UE and is: the biasing of network configuration unit power also is handed down to UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE is according to described calculated relationship, at first determine the soft handover branches number, calculate then from the received unit power biasing of network and amass, obtain the power bias of SI to be sent with determined soft handover branches number is.
7, according to each described method in the claim 2 to 6, it is characterized in that,
Described network is handed down to UE with the power bias parameter of SI: network is carried at the power bias parameter of SI and is handed down to UE in the configuration signal;
Described UE from the power bias parameter that network receives SI is: UE obtains the power bias parameter of SI from configuration signal.
8, method according to claim 7 is characterized in that, described configuration signal is: business is set up the signaling in the process, or Radio Link set up signaling in the process or the signaling in the reconfiguration course of Radio Link.
9, method according to claim 2 is characterized in that,
The power bias parameter of described network configuration SI also is handed down to UE and is: network is determined the soft handover branches number of UE, and calculates the power bias of SI and be handed down to UE according to the soft handover branches number of this UE;
Described UE determines that according to the power bias parameter of SI the power bias of SI to be sent is: UE will be from the power bias of the received SI of the network power bias as SI to be sent.
10, method according to claim 2 is characterized in that,
Network based each soft handover branches number disposes the power bias of corresponding SI respectively;
The power bias parameter of described network configuration SI also is handed down to UE and is: network is determined the soft handover branches number of UE, and selects the power bias of SI of the soft handover branches number correspondence of determined UE to be handed down to UE from the power bias of the SI that disposed.
11, according to claim 2,9 or 10 described methods, it is characterized in that,
Described network is handed down to UE with the power bias parameter of SI: network is carried at the power bias parameter of SI in the activating set updating message and is handed down to UE;
Described UE from the power bias parameter that network receives SI is: UE obtains the power bias parameter of SI from activating set updating message.
12, method according to claim 1 is characterized in that,
The total power bias of described basis determines that the transmitting power of the Dedicated Physical Data Channel E-DPDCH of enhancing is: add the above total power bias on the basis of special used for physical control channel DPCCH power, obtain the transmitting power of E-DPDCH.
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| CN101373995B (en) * | 2007-08-24 | 2012-09-05 | 中兴通讯股份有限公司 | Power control method and apparatus for HSUPA of TD-SCDMA system |
| CN101741431B (en) | 2008-11-04 | 2012-08-08 | 华为技术有限公司 | Method and device for determining transmitting power |
| CN102821448B (en) * | 2008-11-04 | 2015-06-17 | 华为技术有限公司 | Method, device and equipment for determining transmitted power |
| CN101404528B (en) * | 2008-11-11 | 2013-03-13 | 普天信息技术研究院有限公司 | Ascending power control method |
| CN102045825A (en) | 2009-10-14 | 2011-05-04 | 华为技术有限公司 | Method for controlling uplink power of LTE system, base station and mobile terminal |
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