CN101340622B - Distribution method of multi-carrier reinforced uplink power resource - Google Patents

Distribution method of multi-carrier reinforced uplink power resource Download PDF

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CN101340622B
CN101340622B CN2007101260735A CN200710126073A CN101340622B CN 101340622 B CN101340622 B CN 101340622B CN 2007101260735 A CN2007101260735 A CN 2007101260735A CN 200710126073 A CN200710126073 A CN 200710126073A CN 101340622 B CN101340622 B CN 101340622B
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power
carrier wave
user terminal
maximum
base
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CN2007101260735A
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CN101340622A (en
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陈慧
张银成
马志锋
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中兴通讯股份有限公司
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Abstract

The invention provides a method for distributing power resource of a multi-carrier enhanced uplink, which includes the steps that: a wireless network controller configures maximum uplink transmitted power of a user terminal for a base station; the wireless network controller configures allowable maximum uplink transmitted power for the user terminal and expected reference received power of each carrier; the user terminal reports dispatching information including remained power of each carrier; the base station, after receiving the reported dispatching information from the user terminal, distributes power for each carrier according to the reported dispatching information and the maximum uplink transmitted power. Therefore, by adopting the method of the invention, the remained power of each carrier of UE can be concerned without transcending the capacity of the UE; furthermore, the method of the invention can be applied to a TD-SCDMA system.

Description

The distribution method of multi-carrier reinforced uplink power resource

Technical field

The present invention relates to field of wireless communication, more specifically, relate to a kind of distribution method of multi-carrier reinforced uplink power resource.

Background technology

The enhanced uplink connecting system is commonly referred to as HSUPA (High Speed UplinkPacket Access; High speed uplink packet inserts); Be intended to technology through the advanced person and improve the efficient of up link, with effective support web browse, video, multimedia messages and other IP-based business.

At present, 3GPP (3G (Third Generation) Moblie partnership projects tissue) has accomplished the standardization effort of TD-SCDMA enhanced uplink connecting system.Be applicable to single carrier TD-SCDMA system.Increased a kind of transmission channel E-DCII (enhanced uplink dedicated transmission channel) in the enhanced uplink connecting system newly, the TTI of E-DCH (Transmission Time Interval) is 5ms.The grouping that is mapped on the E-DCH transmission channel is called MAC-e PDU (enhancing media access control protocol data unit).

The physical channel relevant with E-DCH has:

E-UCCH (enhanced uplink control channel); It is physical layer control channel; It is carried in the physical layer indication territory of E-PUCH; The control information of carrying comprises E-TFCI (indication of enhanced uplink transformat is in order to indicate current transport block length) and HARQ information (comprising process ID and number of retransmissions information);

E-AGCH channel (E-DCH absolute grant channel) is a control channel, is used for NodeB (base station) to UE (User Equipment, user terminal) transmission authorization message;

E-PUCH (the E-DCH uplink physical channel is claimed the enhanced uplink physical channel again) is a Traffic Channel, is used for UE and carries the E-DCH transport channel data, and the information that auxiliary dispatching is correlated with is also in this channel;

(E-DCH inserts ascending control channel to E-RUCCH at random; Be that enhanced uplink random inserts ascending control channel), be physical layer control channel, being used for UE is not having under the situation of authorizing; The relevant information of transmission auxiliary dispatching, E-RUCCH uses the Physical Random Access Channel resource; And

E-HICH (E-DCH hybrid automatic repeat request indication channel) is a physical layer control channel, is used for Node B and carries HARQ (mixing automatic repeat requests) indication information.

The enhanced uplink access service is divided into dispatching services and non-scheduling service by the difference of scheduling mode; Wherein, The resource of non-scheduling service is that by RNC (radio network controller) UE distributes, and the method for salary distribution is with existing dedicated channel allocation mode, and in dispatching services; For Node B distributes the enhanced uplink resource pool, is single UE Resources allocation by Node B by SRNC.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.

Fig. 1 shows each entity that dispatching services relates to and the diagrammatic sketch of main business function.Wherein, the function mainly born of RNC is: for Node B allocation schedule service resources pond (S102), be responsible for admitting control (S106-S112), be UE configured radio bearer (S112); Node B is according to the indication resource allocation pond (S104) of RNC, be UE Resources allocation (S116), carry out HARQ (mixing automatic repeat requests) and confirm (S120) according to the dispatch request of UE; UE carries out the transmission (S118) and the confirmation of receipt information (S120) of data when the up transmission (S114) that triggers schedule information when transfer of data is arranged according to the mandate of Node B.

Buffer information in the schedule information is the data volume to be sent that is mapped to the logic channel buffering area on the E-DCH among the UE; Represent with byte number; Node B is that UE distributes adequate resources according to this parameter mainly; Comprise channel resource and power resource; The path loss information of this sub-district and adjacent sub-district and power margin information then provide the restrictive condition of resource authorization, and this sub-district that Node B need report according to UE and the path loss information of adjacent sub-district limit scheduling of resource with the interference of control to adjacent sub-district, and Node B is that the authorization power that UE distributes can not surpass the power headroom that UE reports.

The formula that embodies of power headroom UPH is: UPH=Pmax, tx/ (Pe-base * L), wherein; Pmax, and tx=min (Pul, Pue); Pul is the uplink transmission power of RNC (radio network controller) for the maximum permission of UE configuration, and Pue is the maximum transmission power that the UE ability is determined, Pmax; Tx gets value less in 2, is the maximum uplink transmission power of UE, and L is the circuit loss value that UE measures; And Pe-base is the closed power controlled quentity controlled variable that UE safeguards, is called expectation received power, and concrete computing formula is:

P e - base = PRX des _ base + step * Σ i TPC i = PRX des _ base + P TPC

Wherein, PRXdes_base is the high-rise reference expected received power for the UE configuration of network, is an open Loop Power control amount; TPC is a closed loop power control command; Step is the step-length of closed power control, is the UE configuration by the network high level.

Node B is that the power authorization value that UE distributes is the relative value of a Pe-base, can find out like this, UPH be exactly Node B be the maximum of the power mandate that distributes of UE.

For the throughput of further raising system, existing single carrier enhanced uplink connecting system will be introduced the multicarrier characteristic, and will there be N in the system of N carrier wave doubly to the throughput of single-carrier system in theory.When introducing the multicarrier characteristic; With the consideration that has multiple framework; Wherein a kind of feasible framework is a multicarrier binding mechanism; Promptly Node B can authorize a plurality of carrier resources for single UE in a TTI (Transmission Time Interval), and UE can send the E-DCH data simultaneously on a plurality of carrier waves in a TTI, and the data block that each carrier wave sends is independently.This framework is adopted when HSDPA (high speed downlink packet access) introduces the multicarrier characteristic, and its benefit is to improve the peak rate of single UE.

In multicarrier binding mechanism, the logic channel buffer information that UE reports and the resource situation of sub-district will determine the maximum resource that Node B distributes for UE in a TTI, comprise number of carriers, reach the resource on each carrier wave.Node B needs reasonably to distribute the power on each carrier wave, but how to distribute at present none rational solution still.

Summary of the invention

The present invention considers the enhanced uplink connecting system is gone in the making of multicarrier bind hider; Wherein, Node B can distribute the resource more than a carrier wave for UE in a TTI; UE can send the E-DCH data simultaneously on a plurality of carrier waves in a TTI, the data block that each carrier wave sends is independently, and the scheduling of Node B control is the principal character of enhanced uplink connecting system; When the enhanced uplink connecting system was gone in the making of multicarrier bind hider, how Node B distributes the power on a plurality of carrier waves to single UE was a problem.In order to solve the problem that exists in the prior art, the invention provides a kind of distribution method of multi-carrier reinforced uplink power resource.

The distribution method of multi-carrier reinforced uplink power resource of the present invention comprises: radio network controller is the maximum uplink transmission power of base station configuration user terminal; Radio network controller is maximum uplink transmission power that allows of user terminal configuration and the reference expected received power on each carrier wave; The user terminal to send up schedule information comprises the power headroom on each carrier wave; And the base station is that user terminal distributes the authorization power on each carrier wave according to the schedule information of user terminal to send up and the maximum uplink transmission power of user terminal.

Wherein, the base station is no more than the power headroom of each carrier wave for the power that distributes on each carrier wave, and the authorization power in a Transmission Time Interval can not surpass the maximum uplink transmission power of user terminal.

Wherein, radio network controller also need also dispose the reference expected received power of user terminal on each carrier wave to the base station.

When uplink transmission power that radio network controller allows according to the maximum at carrier wave configure user terminal, the maximum uplink transmission power of user terminal is the maximum transmission power of the ability definition of user terminal.

In addition; When uplink transmission power that radio network controller allows not according to the maximum at carrier wave configure user terminal, the maximum uplink transmission power of user terminal is the smaller in the maximum transmission power that defines of the ability of maximum uplink transmission power that allows and user terminal.

Further; When Wi-Fi controller during according to the maximum uplink transmission power at carrier wave configure user terminal; User terminal through following formula rated output surplus: UPH=min (Pul, Pue)/(Pe-base * L), wherein; UPH representes power headroom, and Pul is that radio network controller is the uplink transmission power that the maximum on this carrier wave of user terminal configuration allows; Pue is the maximum transmission power that ability determined of user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of user terminal measurement.

When Wi-Fi controller during not according to the maximum uplink transmission power at carrier wave configure user terminal; Power headroom calculates through following formula: UPH=min (Pul; Pue)/(Pe-base * L); Wherein, UPH representes power headroom, and Pul is that radio network controller is the uplink transmission power of the maximum permission of user terminal configuration; Pue is the maximum transmission power that ability determined of user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of user terminal measurement.

Wherein, user terminal need be safeguarded the expectation received power on each carrier wave after getting into enhanced uplink dedicated transmission channel transmit status, comprising:

In the open Loop Power control stage, expectation received power is set to the reference expected received power on the carrier wave, that is:

Pe-base=PRXdes_base

Wherein, Pe-base is the expectation received power on the carrier wave; PRXdes_base is the reference expected received power on the carrier wave;

In the closed power control stage, expectation received power receives the control of base station to the enhanced uplink physical channel closed loop power control command on this carrier wave, and said expectation received power is following:

Pe-base=PRXdes_base+step×∑TPC

Wherein, Pe-base is the expectation received power on the carrier wave; PRXdes_base is the reference expected received power on the carrier wave; TPC is a closed loop power control command; Step is a step value, is the user terminal configuration by the network high level; And the cumulative function of symbol " ∑ " expression TPC, i.e. TPC order should be operated on the Pe-base of latest update.Wherein, when the TPC that receives is " UP (rising) ", Pe-base is increased a step value step; When the TPC order that receives is " DOWN (decline) ", Pe-base is reduced by a step value.

Thereby, adopt the present invention, can take into account the power headroom of UE on each carrier wave, and don't surmount the limit of power of UE, and can be used for TD-SCDMA (time division CDMA) system.

Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.

Description of drawings

Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the diagrammatic sketch of network entity and main business function in the single carrier enhanced uplink connecting system of the prior art;

Fig. 2 is the flow chart according to the distribution method of multi-carrier reinforced uplink power resource of the present invention; And

Fig. 3 is the diagrammatic sketch of network entity and main business function in the multi-carrier reinforced uplink access system in the embodiment of the 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 explanation and explains the present invention, and be not used in qualification the present invention.

Fig. 2 is the flow chart according to the distribution method of multi-carrier reinforced uplink power resource of the present invention.As shown in Figure 2, this method may further comprise the steps:

Step S202, radio network controller are the maximum uplink transmission power of base station configuration user terminal;

Step S204, radio network controller are maximum uplink transmission power that allows of user terminal configuration and the reference expected received power on each carrier wave;

Step S206, the user terminal to send up schedule information comprises the power headroom on each carrier wave; And

Step S208, the base station is that user terminal distributes the authorization power on each carrier wave according to the schedule information and the maximum uplink transmission power of user terminal to send up.

Wherein, the base station is no more than the power headroom on each carrier wave for the power that distributes on each carrier wave, and the authorization power in a Transmission Time Interval can not surpass the maximum uplink transmission power of user terminal.

Wherein, in above step S202, radio network controller still disposes the reference expected received power of user terminal on each carrier wave to the base station, so that the power mandate of base station when carrying out closed power control and open loop.

Among the step S202, when uplink transmission power that radio network controller allows according to the maximum at carrier wave configure user terminal, the maximum uplink transmission power of user terminal is the maximum transmission power of the ability definition of user terminal.

In addition; Among the step S202; When radio network controller during not according to the maximum uplink transmission power at carrier wave configure user terminal, the maximum uplink transmission power of user terminal is the smaller in the maximum transmission power that defines of the ability of maximum uplink transmission power that allows and user terminal.

Wherein in step S204, after user terminal receives the reference expected received power on each carrier wave, need safeguard the expectation received power Pe-base on each carrier wave, comprise:

In the open Loop Power control stage, expectation received power Pe-base is set to the reference expected received power on the carrier wave, comprises as follows:

Pe-base=PRXdes_base

Wherein, PRXdes_base is the reference expected received power on the said carrier wave;

In the closed power control stage, said expectation received power Pe-base receives the control of base station to the closed loop power control command of the E-PUCH channel on this carrier wave, comprising:

Pe-base=PRXdes_base+step×∑TPC

Wherein, PRXdes_base is the reference expected received power on the said carrier wave; Said TPC is a closed loop power control command, when the TPC that receives is " UP ", Pe-base is increased a step value step; When the TPC order that receives is " DOWN ", Pe-base is reduced by a step value step.The step value is the user terminal configuration by the network high level.The cumulative function of symbol in the formula " ∑ " expression TPC, i.e. TPC order should be operated on the Pe-base of latest update.

Further; Among the step S206, when Wi-Fi controller during according to the maximum uplink transmission power at carrier wave configure user terminal, user terminal is through following formula rated output surplus: UPH=min (Pul; Pue)/(Pe-base * L); Wherein, UPH representes power headroom, and Pul is that radio network controller is the uplink transmission power that the maximum on this carrier wave of user terminal configuration allows; Pue is the maximum transmission power that ability determined of user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of user terminal measurement.

And when Wi-Fi controller during not according to the maximum uplink transmission power at carrier wave configure user terminal; Power headroom calculates through following formula: UPH=min (Pul; Pue)/(Pe-base * L); Wherein, UPH representes power headroom, and Pul is that radio network controller is the uplink transmission power of the maximum permission of user terminal configuration; Pue is the maximum transmission power that ability determined of user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of user terminal measurement.

Fig. 3 is the diagrammatic sketch of network entity and main business function in the multi-carrier reinforced uplink access system in the embodiment of the invention.

In single carrier enhanced uplink connecting system; Node B need not know the maximum uplink transmission power (the maximum uplink transmission power here is the less value in the RNC maximum transmission power that to be the uplink transmission power that allows of the maximum of UE configuration determine with the UE ability) of UE; This is because Node B need check that for the UE scheduling resource time authorization power can not surpass the power headroom UPH that UE reports; And implied the UE maximum transmit power information among the UPH that UE reports; If the authorization power of Node B is no more than UPH, also just mean the maximum uplink transmission power that can not surpass UE.But under multicarrier binding mode,, when Node B distributes more than one carrier resource for UE in certain TTI, will lack the reference frame of power division if Node B does not know the maximum uplink transmission power of UE.(RNC is the uplink transmission power that the maximum of UE configuration allows to maximum uplink transmission power=min; The maximum transmission power of UE ability decision), wherein, the maximum transmission power of UE ability decision is the summation of synchronization UE transmitted power; Do not distinguish carrier wave; And the RNC uplink transmission power that to be the maximum of UE configuration allow is a uplink interference controlled quentity controlled variable, can distinguish carrier wave, also can not distinguish carrier wave, below just introduce specific embodiment of the present invention respectively by these 2 kinds of situation.

First embodiment

In the present embodiment, RNC is the maximum uplink transmission power that allows of UE configuration by carrier wave.Next will be described in detail with reference to figure 3, comprise following each concrete steps.

S302, it is that UE sets up enhanced uplink that RNC requires Node B, has wherein increased the configuration of the maximum uplink transmission power of UE; Wherein, RNC is the maximum transmission power of Node B configuration UE ability definition, when this parameter provides scheduling of resource for Node B, and the limit reference of the total transmitting power of UE.The configuration information that power mandate during the open loop of Node B and closed power control procedure all require to understand reference expected received power, because the disturbed condition of each carrier wave is different, RNC will distinguish the reference expected received power that carrier wave disposes E-PUCH channel on each carrier wave.

Above parameter can dispose in Radio Link foundation, Radio Link increase or the reconfiguration course of NBAP (node B application part), and is as shown in table 1:

Table 1

Masurium Exist The value explanation The UE power grade OP (optional) Integer: 1,2,3,4 Multicarrier information: the maximum carrier number of 1 to >reference expected received power MP Integer :-112 ,-50, unit: dBm

Wherein, The UE power grade defines in 3GPP TS25.102 standard, is divided into 4 grades, and each grade all has corresponding magnitude of power; It is the maximum transmission power in the UE limit of power; Wherein, OP representes that this element is an optional value, only for UE allocating multiple carrier enhanced uplink the time, just needs configuration.

S304 returns response behind the Node B success configuration parameter.

S306, in multicarrier binding scheme, RNC for UE configuration enhanced uplink the time, the information that allocation carriers number and each carrier wave are corresponding (Node B will dispatch Resources allocation for UE on these carrier waves).Consider that each carrier-in-interference situation is different, RNC can be the maximum uplink transmission power that allows of UE configuration by carrier wave.Like this, the transmitting power among TTI on the single carrier wave will be subject to the smaller value in the maximum transmission power of uplink transmission power that the maximum of RNC configuration allows and the definition of UE ability, and total transmitting power will be subject to the maximum transmission power that the UE ability defines.

Described in background technology, Pe-base is the expectation received power when sending the E-PUCH channel, and Pe-base gets the reference expected received power of RNC configuration when open loop; When closed power was controlled, Pe-base received the control of the power control command TPC of Node B.Because the disturbed condition of each carrier wave is different, RNC will distinguish the reference expected received power of carrier wave for E-PUCH channel on each carrier wave of configuration, and each carrier wave is with independently carrying out closed power control, and UE needs the Pe-base value on each carrier wave of independent maintenance like this.The maximum uplink transmission power that allows, the parameter configuration of reference expected received power are seen table 2 on each carrier wave, and wherein RNC guarantees that the reference expected received power parameter value that disposes to Node B and UE is consistent.The RRC that has influence on (Radio Resource control) process has: 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) etc.

Table 2

Masurium Exist The value explanation Multicarrier information: the maximum carrier number of 1 to >maximum the uplink transmission power that allows MP Integer :-50...33, unit: dBm >reference expected received power OP Integer :-112..-50, unit: dBm

S308 returns response behind the UE success configuration parameter.

S310, UE begin to get into the E-DCH operating state; At this state, UE need safeguard the expectation received power Pe-base on each carrier wave.When after sending first or interrupting a period of time, sending E-PUCH, this value is set to the reference expected received power on this carrier wave; Get into the closed power state of a control subsequently, Pe-base receives the control of Node B closed loop power control command, in constantly adjusting.For the scheduling of auxiliary Node B, UE need report the schedule information on each carrier wave, and wherein the power headroom that reports of each carrier wave is: Pmax, tx/ (Pe-base * L).In following formula; Pmax; Tx=min (RNC is the uplink transmission power that the maximum on this carrier wave of UE configuration allows, the maximum transmission power of UE ability definition), L is the path loss that UE measures on this carrier wave; If on this carrier wave beacon channel is arranged, UE will measure circuit loss value to this beacon channel; If do not have beacon channel on this carrier wave, UE will be converted to the path loss on this carrier wave through the beacon channel path loss measured value on other carrier waves; Pe-base is the expectation received power on this carrier wave, and UE always is to use up-to-date Pe-base rated output surplus.

S312; Node B is after receiving the schedule information of UE; Node B confirms total resource requirement according to buffer information; When needs on more than a carrier wave during Resources allocation, the power headroom on each carrier wave that Node B reports according to UE is confirmed the maximum authorized power of each carrier wave, total authorization power can not surpass the maximum transmission power of UE ability definition on each carrier wave.The power distribution algorithm of Node B has the implementation method of various optimizations, but the limit of power division will be according to power headroom and the up maximum transmission power of UE.

Second embodiment

In the present embodiment, RNC is the uplink transmission power that the total maximum of UE configuration allows, and next is that example is described in detail with Fig. 3, has comprised following concrete steps.

S302, it is that UE sets up enhanced uplink that RNC requires Node B, Node B is given in the less value configuration in the maximum transmission power of uplink transmission power that the maximum that UE is total allows and the definition of UE ability.When this parameter provides scheduling of resource for Node B, the limit reference of the total transmitting power of UE.The configuration information that power mandate and the closed power control procedure of Node B when open loop all requires to understand reference expected received power, because the disturbed condition of each carrier wave is different, RNC will distinguish the reference expected received power that carrier wave disposes E-PUCH channel on each carrier wave.In the foundation of NBAP (node B application part) Radio Link, Radio Link increase or reconfiguration course, dispose, as shown in table 3:

Table 3

Masurium Exist The value explanation The maximum uplink transmission power that allows MP (essential) Integer :-50...33, unit: dBm Multicarrier information: the maximum carrier number of 1 to >reference expected received power MP Integer :-112..-50, unit: dBm

S304 returns response behind the Node B success configuration parameter.

S306, in multicarrier binding scheme, RNC for UE configuration enhanced uplink the time, the information that allocation carriers number and each carrier wave are corresponding (Node B will dispatch Resources allocation for UE on these carrier waves).RNC can be the uplink transmission power that the total maximum of UE configuration allows not according to carrier wave, and this function realizes in the 3GPP standard.Like this; Transmitting power among TTI on the single carrier wave will be subject to the smaller value in the maximum transmission power of uplink transmission power that total maximum of RNC configuration allows and the definition of UE ability, and total transmitting power will be subject to the smaller value in the maximum transmission power that uplink transmission power that total maximum of RNC configuration allows and UE ability define.

Described in background technology, Pe-base is the expectation received power when sending the E-PUCH channel, and Pe-base gets the reference expected received power of RNC configuration when open loop; When closed power was controlled, Pe-base received the control of the power control command TPC of Node B.Because the disturbed condition of each carrier wave is different, RNC will distinguish the reference expected received power of carrier wave for E-PUCH channel on each carrier wave of configuration, and each carrier wave is with independently carrying out closed power control, and UE needs the Pe-base value on each carrier wave of independent maintenance like this.Table 4 is seen in the configuration of reference expected received power, and RNC guarantees to be consistent for this parameter value of Node B and UE configuration.The RRC that has influence on (Radio Resource control) process has: 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); RADIO BEARER RELEASE (radio bearer release); RADIO BEARERSETUP (radio bearer foundation); RRC CONNECTION SETUP (RRC connects foundation); TRANSPORT CHANNEL RECONFIGURATION (transmission channel is reshuffled) etc.

Table 4

Masurium Exist The value explanation Multicarrier information: the maximum carrier number of 1 to >reference expected received power OP Integer :-112..-50, unit: dBm

S308 returns response behind the UE success configuration parameter.

S310, UE begin to get into the E-DCH operating state; At this state, UE need safeguard the expectation received power Pe-base on each carrier wave.When after sending first or interrupting a period of time, sending E-PUCH, this value is set to the reference expected received power on this carrier wave; Get into the closed power state of a control subsequently, Pe-base receives the control of Node B closed loop power control command, in constantly adjusting.Scheduling for auxiliary Node B; UE need report the schedule information on each carrier wave, and wherein the power headroom that reports of each carrier wave is: Pmax, tx/ (Pe-base * L); Wherein, Pmax, tx=min (RNC is the uplink transmission power that total maximum of UE configuration allows, the maximum transmission power of UE ability definition); L is the path loss that UE measures on this carrier wave, if on this carrier wave beacon channel is arranged, UE will measure circuit loss value to this beacon channel; If do not have beacon channel on this carrier wave, UE will be converted to the path loss on this carrier wave through the beacon channel path loss measured value on other carrier waves; Pe-base is the expectation received power when sending the E-PUCH channel on this carrier wave, and UE always is to use up-to-date Pe-base rated output surplus.

S312; Node B is after receiving the schedule information of UE; Node B confirms total resource requirement according to buffer information; When needs on more than a carrier wave during Resources allocation; Power headroom on each carrier wave that Node B reports according to UE is confirmed the maximum authorized power of each carrier wave, and total authorization power can not surpass the maximum uplink transmission power of RNC configuration among TTI, i.e. smaller value in the RNC maximum transmission power that to be the uplink transmission power that allows of total maximum of UE configuration define with the UE ability.The power distribution algorithm of Node B has the implementation method of various optimizations, but the limit of power division will be according to power headroom and the up maximum transmission power of UE.

Method provided by the invention is for UE distributes the power limit reference frame to be provided.More than all do not mention this sub-district, adjacent sub-district path loss information are distributed power to Node B influence among 2 embodiment; In fact this influence still exists; When this sub-district, adjacent sub-district path loss information demonstration UE will cause the interference of adjacent sub-district, Node B can not be the UE Resources allocation or distribute resource seldom.

In sum, adopt method of the present invention, can take into account the power headroom of UE on each carrier wave, and don't surmount the limit of power of UE, and can be used for TD-SCDMA (time division CDMA) system.

More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. the distribution method of a multi-carrier reinforced uplink power resource is characterized in that, comprising:
Radio network controller is the maximum uplink transmission power of base station configuration user terminal;
Said radio network controller is maximum uplink transmission power that allows of said user terminal configuration and the reference expected received power on each carrier wave;
The user terminal to send up schedule information, the said schedule information that reports comprises the power headroom on each carrier wave; And
Said base station is said each allocation of carriers power according to said schedule information that reports and said maximum uplink transmission power.
2. distribution method according to claim 1; It is characterized in that; Said base station is the said power headroom that the power that distributes on said each carrier wave is no more than said each carrier wave, and the authorization power in a Transmission Time Interval can not surpass the said maximum uplink transmission power of said user terminal.
3. distribution method according to claim 1 is characterized in that, also comprises: said radio network controller disposes the said reference expected received power on each carrier wave to said base station.
4. according to the distribution method described in the claim 1; It is characterized in that; When said radio network controller disposed the uplink transmission power that the maximum of said user terminal allows according to carrier wave, the maximum uplink transmission power of said user terminal was the maximum transmission power of the ability definition of said user terminal.
5. according to the distribution method described in the claim 1; It is characterized in that; When said radio network controller disposed the uplink transmission power that the maximum of said user terminal allows not according to carrier wave, the maximum uplink transmission power of said user terminal was the smaller in the maximum transmission power of ability definition of maximum uplink transmission power that allows and said user terminal.
6. according to claim 1 or 4 described distribution methods, it is characterized in that when said Wi-Fi controller disposed the uplink transmission power that the maximum of said user terminal allows according to carrier wave, said power headroom calculated through following formula:
UPH=min(Pul,Pue)/(Pe-base×L),
Wherein, UPH representes said power headroom, and Pul is that said radio network controller is the uplink transmission power that the maximum on this carrier wave of said user terminal configuration allows; Pue is the maximum transmission power that ability determined of said user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of said user terminal measurement.
7. according to claim 1 or 5 described distribution methods, it is characterized in that when said Wi-Fi controller disposed the uplink transmission power that the maximum of said user terminal allows not according to carrier wave, said power headroom calculated through following formula:
UPH=min(Pul,Pue)/(Pe-base×L),
Wherein, UPH representes said power headroom, and Pul is that said radio network controller is the uplink transmission power of the maximum permission of said user terminal configuration; Pue is the maximum transmission power that ability determined of said user terminal; Pe-base is the expectation received power on this carrier wave; And L is the circuit loss value on this carrier wave of obtaining of said user terminal measurement.
8. according to claim 6 or 7 described distribution methods, it is characterized in that in the open Loop Power control stage, said user terminal is safeguarded the said expectation received power on each carrier wave through following formula:
Pe-base=PRXdes_base
Wherein, Pe-base is the said expectation received power on the carrier wave;
PRXdes_base is the said reference expected received power on the carrier wave.
9. according to claim 6 or 7 described distribution methods; It is characterized in that; In the closed power control stage; Said expectation received power receives the control of base station to the enhanced uplink physical channel closed loop power control command on the carrier wave, and said user terminal is safeguarded the said expectation received power on each carrier wave through following formula:
Pe-base=PRXdes_base+step×∑TPC
Wherein, Pe-base is the said expectation received power on the carrier wave; PRXdes_base is the said reference expected received power on the carrier wave; TPC is a closed loop power control command; Step is a step value, is said user terminal configuration by the network high level; And the cumulative function of the said TPC of symbol " ∑ " expression,
When the said TPC that receives is " UP ", Pe-base is increased a step value;
When the said TPC that receives is " DOWN ", Pe-base is reduced by a said step value.
CN2007101260735A 2007-07-06 2007-07-06 Distribution method of multi-carrier reinforced uplink power resource CN101340622B (en)

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