CN101296003A - Power control method and system for reinforced uplink transmitting scheduling information - Google Patents
Power control method and system for reinforced uplink transmitting scheduling information Download PDFInfo
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Abstract
The invention provides a power control method applied when an enhanced uplink independently transmits scheduling information and a device thereof. The method includes the steps: a RNC configures the power offset value of the scheduling information as the offset value of transmitting power when the scheduling information is independently transmitted with authorization and then sends the offset value to UE and a base station; when the UE independently transmits the scheduling information on authorized resources, the power offset value of the scheduling information is used as the power offset value of an enhanced uplink physical channel and then authorized power is compared with the magnitude of the transmitting power of the enhanced uplink physical channel. When the magnitude of the transmitting power is more than the magnitude of the authorized power, the UE transmits the enhanced uplink physical channel based on the authorized power; while the magnitude of the transmitting power is less than the magnitude of the authorized power, the enhanced uplink physical channel is transmitted based on the magnitude of the transmitting power of the enhanced uplink physical channel, thus ensuring the reliable transmission of the scheduling information and improving the scheduling accuracy and the utilization rate of system resources.
Description
Technical field
The present invention relates to field of wireless communication, more specifically, Poewr control method and system when relating to the independent transmitting scheduling information of a kind of enhanced uplink.
Background technology
Enhanced uplink is commonly referred to as HSUPA (High Speed Uplink PacketAccess, high speed uplink packet inserts), it is intended to improve by advanced person's technology the efficient of up link, with effective support web browse, video, multimedia messages and other IP-based business.
Increased a kind of E-DCH transmission channel (enhanced uplink dedicated transmission channel) among the HSUPA newly, enhanced uplink data is carried on this transmission channel, and the TTI of E-DCH (Transmission Time Interval) is 5ms.The grouping that is mapped on the E-DCH transmission channel is called MAC-ePDU (enhancing media access control protocol data unit), wherein, comprises one or more MAC-d streams.
The physical channel relevant with E-DCH comprises:
One, E-UCCH (enhancing ascending control channel), it is a kind of physical layer control channel, be carried in the physical layer indication territory of E-PUCH, control information wherein comprises E-TFCI (strengthening the indication of uplink form, in order to indicate current transport block length) and HARQ information (comprising process ID and number of retransmissions information);
Two, E-AGCH channel (E-DCH absolute grant channel), it is the control channel of a kind of NodeB of being used for (base station) transmission authorization message;
Three, E-PUCH (E-DCH uplink physical channel, be otherwise known as and strengthen uplink physical channel), it is the Traffic Channel of a kind of UE of being used for (User Equipment, user terminal) carrying E-DCH transport channel data, in addition, the information that auxiliary dispatching is relevant is also in this channel;
Four, (E-DCH inserts ascending control channel to E-RUCCH at random, promptly, enhanced uplink inserts ascending control channel at random), it is that a kind of UE of being used for is at the physical layer control channel that does not have the information that the transmission auxiliary dispatching is relevant under the situation of authorizing, in addition, E-RUCCH uses the Physical Random Access Channel resource; And
Five, E-HICH (E-DCH hybrid automatic repeat request indication channel), it is the physical layer control channel that a kind of Node of being used for B carries HARQ (mixing automatic repeat requests) indication information.
Press the difference of scheduling mode, the HSUPA business is divided into dispatching services and non-scheduling service, wherein, the resource of non-scheduling service distributes for UE by SRNC (service wireless network controller), the mode of distributing is identical with existing dedicated channel allocation mode, in addition, and in dispatching services, come for Node B distributes the enhanced uplink resource pool by SRNC, and come to be single UE Resources allocation by Node B.
In dispatching services, UE need report the scheduling of some information with auxiliary Node B, these information are called schedule information SI (Scheduling Information), comprising path loss metrical information of UE buffer information, power headroom, this sub-district and adjacent sub-district etc.When UE had upstream data to send, UE just may trigger the transmission of schedule information; System also can require UE periodically to send schedule information, so that NodeB (Node B, base station) scheduling resource.
When UE does not authorize, SI will send by the E-RUCCH channel; When the E-PUCH resource of authorizing, schedule information and business datum send by the E-PUCH channel together.Under following situation, SI can send on the E-PUCH channel separately:
1. because the resource of authorizing is fewer, authorization resources allows the transport block length of transmission can't service data transmission (the minimum packets length of business datum is greater than this transport block length), and this moment, UE only sent SI on the resource of authorizing;
2. because the timing of schedule information reports mechanism, make UE on current authorization resources, must send SI, but can't carry other business datum again because of the resource-constrained that obtains.As shown in Figure 1, provided the transmission situation of three kinds of schedule informations.
Schedule information has 23 bits, and in the enhancing uplink form form that system provides, the E-TFCI of 23 bit correspondences is 0.After receiving the SI of UE, resource authorization be not immediately or each TTI send to UE, but fully determine whether/when send by the priority situation of the scheduling feature entity among the Node B according to current network conditions and each competition UE.
The course of work of dispatching services is: have data need transmit but during the current resource that does not have to authorize in the UE buffering area, will be by the E-RUCCH request resource, Node B sends absolute grant information by the E-AGCH channel to UE, wherein, comprises power authorization message and physical channel authorization message.The power authorization message is used for distributing the available system jamming resource between each competition UE, and the physical channel authorization message is used for distributing the time slot and the sign indicating number resource of E-PUCH use between each competition UE.
Article one, the authorization message on the E-AGCH uses once only for a UE, authorizing the minimum duration that is suitable for is an E-DCH TTI, also can support the mandate of variable-length by using RDI (resource continuous time indication), for example, RDI can indicate UE to use this authorization resources in ensuing 8 TTI.UE intercepts one group of E-AGCH channel, and this group E-AGCH channel is the UE configuration by the network high level, and UE successfully attends school the authorization message of getting wherein in case decode, and sends data by the E-PUCH channel of authorizing after the agreement predetermined timing time.
When sending data by E-PUCH, UE can be with SI in passing, also may only send SI.The Node B E-UCCH control channel of at first will decoding, again the data among the E-PUCH are decoded according to information wherein, decode and successfully then on the E-HICH channel, return ACK, if unsuccessful, then return NACK, this moment, UE need carry out retransmission process according to retransmission mechanism.
Because SI information provides important scheduling foundation for NodeB, thus need to guarantee the reliability of SI transmission, present reliability mechanisms comprise following some:
When 1, SI sent by E-RUCCH, E-RUCCH had suitable power mechanism and forward error correction mechanism, and when not receiving E-AGCH in the regular hour after UE sends E-RUCCH, can resend E-RUCCH; And
When 2, SI and data sent in a MAC-e PDU, MAC-e PDU had the HARQ Profile (mixing automatic repeat requests attribute) of oneself, wherein, comprised power offset attribute and retransmitted time number attribute.
In 2, when SI and data sent together, the transmitting power of E-PUCH was provided by following formula:
P
E-PUCH＝P
e-base+L+β
e+K
E-PUCH ......(1)
Wherein, P
E-PUCHBe the E-PUCH channel transmitting power, P
E-baseBe the power closed loop amount of UE storage, be controlled by the power control commands word on the E-AGCH channel, L is the circuit loss value that UE measures, β
eBe the power excursion that current selected transport block length, resource and modulation system obtain, and K
E-PUCHBe MAC-e PDU power excursion (that is aforesaid power offset attribute).Retransmit time number attribute and refer to after UE sends E-PUCH, if receive NACK (not confirming) on E-HICH, UE will resend this packet, just abandon this packet up to surpassing the repeating transmission number of times.
RNC (radio network controller) comes each MAC-d for UE to banish according to the QOS attribute of business to put a HARQ Profile (mix and retransmit attribute automatically), comprising power excursion, retransmit number of times, retransmission timer.Power excursion and retransmit number of times reliability transmission is provided, and retransmit number of times and retransmission timer provides the time delay guarantee.The power offset values of MAC-e PDU is the power excursion that is multiplexed into the MAC-d stream of the highest priority logical channel correspondence in this grouping, and to retransmit number of times and retransmission timer be respectively to be multiplexed into number of retransmissions that all MAC-d in this grouping flow and the maximum in the retransmission timer value.
As can be seen, in existing HSUPA system, when SI sends separately, also do not have a kind of power control mechanism in a MAC-ePDU, lack the mechanism that transmission reliability guarantees.Because SI directly has influence on the accurate scheduling of NodeB, and then has influence on effective utilization of system resource, thereby, need effective power of formulation and retransmission mechanism to improve existing enhancing ascending access system.
Summary of the invention
Thereby, in order to address the above problem, Poewr control method and system when the invention provides the independent transmitting scheduling information of a kind of enhanced uplink, it can guarantee the reliability during transmission on authorization resources separately of schedule information in the high speed uplink packet access (HSUPA) business, and can adjust power timely according to the variation of wireless environment and send strategy, thereby guarantee that schedule information transmission reliably is to improve the accuracy and the usage factor of system resource of scheduling.In addition, can apply the present invention to TD-CDMA (time division CDMA) system and TD-SCDMA (TD SDMA) system.
Poewr control method when one aspect of the present invention provides the independent transmitting scheduling information of a kind of enhanced uplink, it can may further comprise the steps: step S202, the power offset values of radio network controller configuration schedules information is as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and the transmit power offset value is sent to user terminal and base station; Step S204, when user terminal on authorization resources separately during transmitting scheduling information, with described schedule information power offset values as the power offset values that strengthens uplink physical channel; And step S206, the transmission power level and the authorization power that strengthen uplink physical channel are compared, when the transmission power level of the enhancing uplink physical channel that calculates during greater than the authorization power value, the transmitting power that strengthens uplink physical channel is reduced to authorization power and strengthens uplink physical channel according to the authorization power emission, and, strengthen uplink physical channel according to the transmission power level emission of the enhancing uplink physical channel that calculates when the transmission power level that strengthens uplink physical channel during less than the authorization power value.
Wherein among the step S204, user terminal at first selects to make the modulation system of transmitted power minimum according to the transport block length of schedule information, current resource situation, obtain the power excursion β by the common decision of transport block length, resource and modulation system
eThe transmitting power of user terminal and then calculating enhanced uplink comprises power closed loop amount, path loss, β in the power component
eAnd schedule information power offset values.
According to an aspect of the present invention, this Poewr control method can also may further comprise the steps: step S208, the base station can indicate radio network controller to adjust the power offset values of schedule information according to the network interferences situation at any time.
According to a bright aspect of we, after radio network controller receives the indication of base station adjustment schedule information power excursion, to the reconfiguration course of base station and user terminal initiation schedule information power offset values.
Success rate when wherein, the base station is sent separately according to schedule information in the scheduled time or mortality come the requirement radio network controller to adjust the power offset values of schedule information.
Alternatively, the base station comes the requirement radio network controller to adjust the power offset values of schedule information according to success rate or the mortality that user terminal transmission in the scheduled time strengthens media access control protocol data unit.
In addition, the power transmission value that strengthens uplink physical channel is calculated by following formula: P
E-PUCH=P
E-base+ L+ β
e+ P
SI, wherein, P
E-baseBeing the power closed loop amount of user terminal, is the user terminal configuration by the network high level, and control is dynamically adjusted according to closed power, and L is the circuit loss value that user terminal measurement obtains, β
eBe the power offset values of determining according to transport block length, resource and modulation system, and P
SIIt is the power offset values of schedule information.
According to an aspect of the present invention, the power offset values of schedule information disposes in radio resource control or reshuffles.
Power control system when another aspect of the present invention also provides the independent transmitting scheduling information of a kind of enhanced uplink, it can comprise: the configuration transmitting element, be positioned on the radio network controller, the power offset values that is used to dispose or reshuffle schedule information is as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and the transmit power offset value is sent to user terminal and base station; The transformat selected cell, be used for when user terminal on authorization resources separately during transmitting scheduling information, according to transport block length and current resource, the user terminal selecting modulation system, and calculate the transmission power level that strengthens uplink physical channel, at the transmission power level that strengthens uplink physical channel during greater than the authorization power value, the transmitting power that strengthens uplink physical channel is reduced to authorization power automatically and strengthens uplink physical channel according to the authorization power emission, and during less than the authorization power value, strengthen uplink physical channel according to the transmission power level emission that strengthens uplink physical channel at the transmission power level that strengthens uplink physical channel.
Power control system according to a further aspect of the invention can also comprise: adjustment unit, be positioned on the base station, and be used for adjusting the power offset values of schedule information according to network interferences situation indication radio network controller.
In adjustment unit, can also comprise first counting unit, the success rate or the mortality that are used in the given time schedule information being sent are separately counted, and come the requirement radio network controller to adjust the power offset values of schedule information according to count results.
Alternatively, in adjustment unit, can also comprise second counting unit, be used in the given time the success rate or the mortality of user terminal transmission enhancing media access control protocol data unit being counted, and come the requirement radio network controller to adjust the power offset values of schedule information according to count results.
In addition, in the transformat selected cell, the power transmission value that strengthens uplink physical channel is calculated by following formula: P
E-PUCH=P
E-base+ L+ β
e+ P
SI, wherein, P
E-baseBeing the power closed loop amount of user terminal, is the user terminal configuration by the network high level, and control is dynamically adjusted according to closed power, and L is the circuit loss value that user terminal measurement obtains, β
eBe the power offset values of determining according to transport block length, resource and modulation system, and P
SIIt is the power offset values of schedule information.
Wherein, the power offset values that disposes or reshuffle schedule information is finished by radio resource control.
Thereby, by the present invention, can guarantee the reliability transmission when schedule information is transmitted separately in the high speed uplink packet access (HSUPA) business on authorization resources, and can adjust strategy timely, thereby improve the accuracy and the usage factor of system resource of Node B scheduling according to the variation of wireless environment.In addition, can apply the present invention to TD-CDMA (time division CDMA) system and TD-SCDMA (TD SDMA) system.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the transmission situation of three kinds of schedule informations in the prior art;
Fig. 2 is the flow chart of the Poewr control method during according to the independent transmitting scheduling information of enhanced uplink of the present invention;
Fig. 3 is the concise and to the point flow graph of the enhanced uplink schedule information power excursion configuration of the embodiment of the invention;
Fig. 4 is the enhanced uplink dispatch among Fig. 2 and the detail flow chart of business datum process; And
Fig. 5 is the block diagram of the power control system during according to the independent transmitting scheduling information of enhanced uplink of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 2 is the flow chart of the Poewr control method during according to the independent transmitting scheduling information of enhanced uplink of the present invention.As shown in Figure 2, this method may further comprise the steps:
Step S202, the power offset values of radio network controller configuration schedules information be as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and this power offset values is sent to user terminal and base station;
Step S204 is when user terminal separately during transmitting scheduling information, need add the power excursion of schedule information in the calculating of transmitting power on authorization resources.User terminal is at first according to transport block length and current resource situation (comprising authorization power, time interval resource and sign indicating number resource), selecting modulation mode, 2 kinds of optional modulation system: QPSK (Quadrature Phase Shift Keying) and 16QAM (16 quadrature amplitude modulation) are arranged, select the less a kind of modulation system of power demand, this process is consistent with the selection course of the relevant modulation system of existing 3GPP (3G (Third Generation) Moblie partnership projects).User terminal obtains a power excursion by transport block length, resource and modulation system three, and this process can be with reference to the computational process of the existing relevant E-PUCH power factor of 3GPP.User terminal further calculates the transmission power level that strengthens uplink physical channel.The power transmission value that strengthens uplink physical channel is calculated by following formula: P
E-PUCH=P
E-base+ L+ β
e+ P
SI, wherein, P
E-baseBe the power closed loop amount of user terminal, L is the circuit loss value that user terminal measurement obtains, β
eBe to calculate power excursion according to transport block length, resource, modulation system, and P
SIIt is the power offset values of schedule information.First three items behind the equation is the transmitting power parameter that defines in the existing 3GPP agreement, a back P
SIWe are bright to be the special power offset values that increases of schedule information; And
Step S206, because TDD (tdd systems) is an interference limiting system, user terminal should select less power to send between enhanced uplink transmitting power that calculates and NodeB authorization power.Specifically: user terminal compares the transmission power level and the authorization power of described enhancing uplink physical channel, when the transmission power level of described enhancing uplink physical channel during greater than described authorization power value, described user terminal strengthens uplink physical channel according to described authorization power emission, and, strengthen uplink physical channel according to the transmission power level emission of described enhancing uplink physical channel when the transmission power level of described enhancing uplink physical channel during less than described authorization power value.
In addition, this Poewr control method can also may further comprise the steps: step S208, the power offset values of schedule information is adjusted in the base station according to network interferences situation indication radio network controller.
Success rate when wherein, the base station is sent separately according to schedule information in the scheduled time or mortality come the requirement radio network controller to adjust the power offset values of schedule information.
Alternatively, the base station comes the requirement radio network controller to adjust the power offset values of schedule information according to success rate or the mortality that user terminal transmission in the scheduled time strengthens media access control protocol data unit.
After radio network controller receives the indication of base station adjustment schedule information power excursion, adopt recommended value or the recommended value of reference base station and power offset values of RRM (RRM) algorithm design of basis oneself of base station, to the reconfiguration course of base station and user terminal initiation schedule information power offset values.
The power offset values that mails to the schedule information of user terminal is configured or reshuffles by RRC (Radio Resource control) process.Mail to that the schedule information power offset values of NodeB is configured or reshuffles by NBAP (node B application part) process.
Fig. 3 is the concise and to the point flow graph of the enhanced uplink dispatching services data procedures of the embodiment of the invention.With the TD-SCDMA system is that example is introduced in strengthening up access dispatching business, and the power control scheme when schedule information is transmitted separately under the situation of mandate is arranged is to guarantee the reliability of transmission.
As shown in Figure 3, at first, RNC is the power offset attribute of UE configuration schedules information, and as the independent transmit power offset during transmitting scheduling information under the situation of mandate is arranged, then, Node B is adjusted this power offset values according to the network interferences situation to the RNC indication.
RNC is for UE configuration enhanced uplink dispatching services the time, power offset attribute for UE configuration schedules information, as the power excursion when transmitting scheduling information is separately arranged under the situation of mandate in packet, like this, schedule information in packet separately the power during transmission be:
P
E-PUCH＝P
e-base+L+β
e+P
SI ......(2)
Wherein, preceding four parameters are identical with the implication of description in the formula (1), and last parameter is that RNC is the schedule information power offset values that UE disposes or reshuffles.
Separately during transmitting scheduling information, can determine that E-TFCI is 0 when UE decision on authorization resources, corresponding transport block length is 23 bits, according to transport block length and current resource, and the UE selecting modulation mode, and calculate β
eIf (P
E-base+ L+ β
e+ P
SI) greater than authorization power, UE launches E-PUCH after transmitting power is reduced to authorization power automatically more so; If (P
E-base+ L+ β
e+ P
SI) less than authorization power, so will be according to the P that calculates
E-PUCHPower emission E-PUCH.
The schedule information power excursion can be set up in the RRC agreement or reshuffle in the message of E-DCH radio bearer and send to UE, comprises CELL UPDATE CONFIRM (cell update affirmation), HANDOVER TO UTRAN COMMAND (switching command), PHYSICAL CHANNEL RECONFIGURATION (reshuffle by physical channel, RADIO BEARER RECONFIGURATION (radio bearer is reshuffled), RADIOBEARER RELEASE (radio bearer release), RADIO BEARER SETUP (radio bearer foundation), RRC CONNECTION SETUP (RRC connects foundation), TRANSPORT CHANNEL RECONFIGURATION (transmission channel is reshuffled).
Table 1 is concrete element definition:
Table 1
| Masurium | Exist | The value explanation |
| The schedule information power excursion | MP (essential) | Integer: 0-6, unit: decibel |
RNC needs simultaneously to the parameter shown in the NodeB allocation list 1, sets up in NBAP or reshuffles in the message of E-DCH radio bearer and dispose, so that NodeB carries out power control.
Because schedule information need reflect buffer information and the interfere information that UE is up-to-date, requires certain real-time.Behind the independent transmitting scheduling information, if UE receives the NACK feedback (that is, incorrect the reception) of NodeB, schedule information does not need re-transmission so in packet.It is 0 that number of retransmissions when system can transmit schedule information separately fixedly installs.UE can send up-to-date schedule information in next one transmission.
Because schedule information ends in Node B, makes radio network controller not understand the schedule information efficiency of transmission of single UE, the excessive or very few decline that all can cause resource utilization ratio of power excursion setting.Because Node B is the entity of unique awareness network disturbed condition and transmission quality, thereby require radio network controller that this power offset parameter is adjusted according to the current network disturbed condition by Node B.
Concrete grammar is, after NodeB receives the E-PUCH information of UE, wherein E-UCCH channel of decoding at first, if E-TFCI wherein is designated as 0, what can specified data partly transmit is schedule information, and NodeB decodes to the E-PUCH data division, if decode successfully, return ACK (affirmation) to UE, and preserve schedule information wherein; If the decoding failure is returned NACK (not confirming) to UE.Success or the frequency of failure of NodeB when single UE transmits SI separately in a period of time added up, when success rate during greater than certain thresholding, can require RNC to reduce the schedule information power excursion of this UE, when success rate during, can require RNC to increase the schedule information power excursion less than certain thresholding.Perhaps when mortality during greater than certain thresholding, can require RNC to increase the power excursion of schedule information, in addition,, can require RNC to reduce the power excursion of schedule information when success rate during less than certain thresholding.NodeB also can require radio network controller to adjust the schedule information power excursion according to success rate or the mortality of this UE transmission MAC-e PDU in a period of time.
Because NodeB understands the current schedule information power excursion of UE, RADIO LINK PARAMETERUPDATE INDICATION (radio link parameter update indication) process that NodeB can pass through among the NBAP (NodeB Application Part) is directly advised suitable schedule information power excursion to RNC.The parameter-definition and the table 1 of radio link parameter update indication process are consistent.
Radio link parameter update indication process is just may carry out after UE sets up the E-DCH link.Thereby when initial configuration E-DCH link, RNC can be a UE selection scheduling information power excursion according to former statistical value or empirical value.The geographical position of it and UE is relevant with the disturbed condition of system.
Fig. 4 is the detail flow chart of the enhanced uplink dispatching services data procedures among Fig. 2.As shown in Figure 4, may further comprise the steps:
Step S402:RNC thinks and can set up enhanced uplink for this UE through admitting control, setting up the range request Node B by the Radio Link of NBAP agreement is that UE sets up the E-PUCH Radio Link, except original parameter, the power excursion when comprising schedule information and transmitting separately;
Step S404: Node B receives configuration parameter, and be that from the up common pool of the enhancing of this sub-district this UE distributes E-AGCH channel and E-RNTI (Radio Link temporary mark), set up response or the radio link reconfiguration response returns to RNC by the Radio Link of NBAP;
Step S406:RNC initiates radio bearer by the RRC agreement to UE and sets up order, except original parameter, and the power excursion when also comprising schedule information and transmitting separately;
Step S408:UE receives configuration parameter, replys response message to network side, and determines that according to configuration parameter current E-DCH transport service is available;
Data volume becomes at non-0 o'clock by 0 in the logic channel buffering area of step S410:UE E-DCH correspondence, and UE initiates the E-RUCCH random access procedure, is with schedule information;
Step S412: after Node B detects the request of access at random of this UE, UE is added among the competition UE group who uses the E-DCH resource, according to the QOS attribute of current resource situation, UE, UE auxiliary dispatching information etc. this UE is dispatched, after distributing adequate resources, send authorization message to UE by the E-AGCH channel;
After step S414:UE received E-AGCH, if current authorization resources can only carry out the transmission of schedule information, UE selected suitable modulation system, according to P according to the transport block length and the authorization resources of schedule information so
E-PUCH=P
E-base+ L+ β
e+ P
SICalculate transmitting power, if the P that calculates
E-PUCHGreater than authorization power, UE launches E-PUCH after transmitting power is reduced to authorization power automatically more so, and if P
E-PUCHLess than authorization power, so will be according to the P that calculates
E-PUCHPower emission E-PUCH;
Step S416: Node B is decoded to the E-UCCH in the E-PUCH channel, obtain transport format information, data portion is decoded then, and on the E-HICH channel, return ACK/NACK information, for current data is the situation of schedule information, NodeB preserves (not needing to send to RNC), and carries out the statistics of schedule information transmission accuracy rate;
Step S418: will send the radio link parameter update indication to RNC, with going up the power offset values that it sees fit by the schedule information power excursion that is necessary to adjust this UE if Node B is thought; And
Step S420 carries out reshuffling of schedule information power excursion with reference to the RRM algorithm decision of self for UE after receiving the power modulation indication of NodeB to step S426:RNC, initiates to reshuffle flow process to NodeB and UE.Because NodeB is carrying out inner loop power when control to Pe-base, each parameter information when needing to understand the current calculating transmitting power of UE, thereby reshuffle the flow process suggestion and adopt the synchronized reconfiguration flow process.
Fig. 5 is the block diagram of the power control system 500 during according to the independent transmitting scheduling information of enhanced uplink of the present invention, as shown in Figure 5, this system comprises: configuration transmitting element 502, be positioned on the radio network controller, the power offset values that is used to dispose or reshuffle schedule information is as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and the transmit power offset value is sent to user terminal and base station; Transformat selected cell 504, be positioned at user terminal, be used for when user terminal on authorization resources separately during transmitting scheduling information, according to transport block length and current resource, the user terminal selecting modulation system, and further calculate the transmission power level that strengthens uplink physical channel; When the transmission power level that strengthens uplink physical channel during greater than the authorization power value, the transmitting power that strengthens uplink physical channel is reduced to authorization power automatically and strengthens uplink physical channel according to the authorization power emission, and during less than the authorization power value, strengthen uplink physical channel according to the transmission power level emission that strengthens uplink physical channel at the transmission power level that strengthens uplink physical channel.
This power control system 500 can also comprise adjustment unit 506, is positioned on the base station, is used for adjusting according to schedule packet transmissions transmission situation indication radio network controller the power offset values of schedule information.
In adjustment unit 506, can also comprise first counting unit, the success rate or the mortality that are used in the given time schedule information being sent are separately counted, and come the requirement radio network controller to adjust the power offset values of schedule information according to count results.
Alternatively, in adjustment unit 506, can also comprise second counting unit, be used in the given time the success rate or the mortality of user terminal transmission enhancing media access control protocol data unit being counted, and come the requirement radio network controller to adjust the power offset values of schedule information according to count results.
In addition, in transformat selected cell 504, the power transmission value that strengthens uplink physical channel is calculated by following formula: P
E-PUCH=P
E-base+ L+ β
e+ P
SI, wherein, P
E-baseBe the power closed loop amount of user terminal, L is the circuit loss value that user terminal measurement obtains, β
eBe the power offset values that transport block length, resource and modulation system determine, and P
SIIt is the power offset values of schedule information.
Wherein, the power offset values of configuration schedules information is set up in radio resource control, or sends to user terminal in the message of reshuffling the E-DCH radio bearer.
In sum, by the present invention, can guarantee the reliability transmission mechanism when schedule information is transmitted separately in the high speed uplink packet access (HSUPA) business on authorization resources, and can adjust strategy timely according to the variation of wireless environment, thereby guarantee that schedule information transmission reliably is to improve the accuracy and the usage factor of system resource of scheduling.
In addition, can apply the present invention to TD-CDMA (time division CDMA) system and TD-SCDMA (TD SDMA) system.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the Poewr control method during the independent transmitting scheduling information of an enhanced uplink is characterized in that, may further comprise the steps:
Step S202, the power offset values of radio network controller configuration schedules information be as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and described transmit power offset value is sent to user terminal and base station;
Step S204, when described user terminal on authorization resources separately during the described schedule information of transmission, with the power offset values of described schedule information as the power offset values that strengthens uplink physical channel; And
Step S206, the transmission power level and the authorization power of described enhancing uplink physical channel are compared, when the transmission power level of described enhancing uplink physical channel during greater than described authorization power value, described user terminal strengthens uplink physical channel according to described authorization power emission, and, strengthen uplink physical channel according to the transmission power level emission of described enhancing uplink physical channel when the transmission power level of described enhancing uplink physical channel during less than described authorization power value.
2. Poewr control method according to claim 1 is characterized in that, and is further comprising the steps of:
Step S208, described base station indicates described radio network controller to adjust the power offset values of described schedule information according to the network interferences situation at any time.
3. Poewr control method according to claim 1 is characterized in that, described step S204 comprises following processing:
Described user terminal at first utilizes the transport block length of described schedule information and the modulation system that current resource situation selects to make the transmitted power minimum, obtains the power excursion β by the common decision of transport block length, resource and modulation system
eAnd
Described user terminal calculates the transmitting power of enhanced uplink, comprises power closed loop amount, path loss, β in the component of described transmitting power
eAnd schedule information power offset values.
4. Poewr control method according to claim 2, it is characterized in that success rate when described base station is sent separately according to described schedule information in the scheduled time or mortality come the described radio network controller of requirement to adjust the power offset values of described schedule information.
5. Poewr control method according to claim 2, it is characterized in that described base station comes the described radio network controller of requirement to adjust the power offset values of described schedule information according to success rate or the mortality that described user terminal transmission in the scheduled time strengthens media access control protocol data unit.
6. Poewr control method according to claim 2 is characterized in that, described radio network controller is reshuffled the schedule information power offset values by the synchronized reconfiguration process to base station and user terminal after receiving the described adjustment indication of base station.
7. according to each described Poewr control method in the claim 1 to 6, it is characterized in that the power transmission value of described enhancing uplink physical channel is calculated by following formula:
P
E-PUCH＝P
e-base+L+β
e+P
SI，
Wherein, P
E-baseBe the power closed loop amount of described user terminal, L is the circuit loss value that described user terminal measurement obtains, β
eBe the power offset values that described user terminal is determined according to transport block length, resource and modulation system, and described P
SIIt is the power offset values of described schedule information.
8. Poewr control method according to claim 7 is characterized in that the power offset values of described schedule information disposes or reshuffles in radio resource control.
9. the power control system during the independent transmitting scheduling information of an enhanced uplink is characterized in that, comprising:
The configuration transmitting element, be positioned on the radio network controller, the power offset values that is used to dispose or reshuffle schedule information is as the transmit power offset value during transmitting scheduling information separately under the situation of mandate is arranged, and described transmit power offset value is sent to user terminal and base station;
The transformat selected cell, be used for when described user terminal transmits described schedule information separately on authorization resources, according to transport block length and current resource, described user terminal selecting modulation system, calculate current power offset values, and further calculate the transmission power level that strengthens uplink physical channel; And definite last transmitting power, at the transmission power level of described enhancing uplink physical channel during greater than described authorization power value, strengthen uplink physical channel according to described authorization power emission, and at the transmission power level of described enhancing uplink physical channel during, strengthen uplink physical channel according to the transmission power level emission of described enhancing uplink physical channel less than described authorization power value.
10. power control system according to claim 9 is characterized in that, also comprises: adjustment unit, be positioned on the described base station, and be used for indicating described radio network controller to adjust the power offset values of described schedule information according to the network interferences situation.
11. power control system according to claim 10, it is characterized in that, described adjustment unit comprises first counting unit, the success rate or the mortality that are used in the given time described schedule information being sent are separately counted, and come the described radio network controller of requirement to adjust the power offset values of described schedule information according to count results.
12. power control system according to claim 10, it is characterized in that, in described adjustment unit, also comprise second counting unit, the success rate or the mortality that are used in the given time described user terminal transmission being strengthened media access control protocol data unit are counted, and come the described radio network controller of requirement to adjust the power offset values of described schedule information according to count results.
13., it is characterized in that in described computing unit, the power transmission value of described enhancing uplink physical channel is calculated by following formula according to each described power control system in the claim 9 to 12:
P
E-PUCH＝P
e-base+L+β
e+P
SI，
Wherein, P
E-baseBe the power closed loop amount of described user terminal, L is the circuit loss value that described user terminal measurement obtains, β
eBe the power offset values that described user terminal is determined according to transport block length, resource and modulation system, and described P
SIIt is the power offset values of described schedule information.
14. power control system according to claim 13 is characterized in that, the power offset values of the described schedule information of described configuration disposes in radio resource control or reshuffles.
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| CN2007100979943A CN101296003B (en) | 2007-04-25 | 2007-04-25 | Power control method and system for reinforced uplink transmitting scheduling information |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100979943A CN101296003B (en) | 2007-04-25 | 2007-04-25 | Power control method and system for reinforced uplink transmitting scheduling information |
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| CN101296003A true CN101296003A (en) | 2008-10-29 |
| CN101296003B CN101296003B (en) | 2012-11-28 |
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| WO2009115043A1 (en) * | 2008-03-21 | 2009-09-24 | 大唐移动通信设备有限公司 | Method, system and apparatus for determining power offset parameters |
| WO2010048835A1 (en) * | 2008-10-31 | 2010-05-06 | 华为技术有限公司 | Method, apparatus and system of resource allocation |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| MY129851A (en) * | 1999-03-22 | 2007-05-31 | Interdigital Tech Corp | Weighted open loop power control in a time division duplex communication system |
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