CN101141158A - Service types based power distribution method on reverse link power control channel - Google Patents
Service types based power distribution method on reverse link power control channel Download PDFInfo
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- CN101141158A CN101141158A CNA2007100056806A CN200710005680A CN101141158A CN 101141158 A CN101141158 A CN 101141158A CN A2007100056806 A CNA2007100056806 A CN A2007100056806A CN 200710005680 A CN200710005680 A CN 200710005680A CN 101141158 A CN101141158 A CN 101141158A
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Abstract
The present invention discloses a power distribution method for reverse link power control channels based on service type of wireless communication systems, which comprises steps below: A base station confirms total power applied to a reverse link power control channel and determines power distributed for the reverse link power control channel corresponding to a mobile terminal according to frontward channel quality information variation reported by the mobile terminal. In addition, the base station divides mobile terminals into three groups in terms of the frontward channel quality information variation reported by the mobile terminal and service type initiated by the mobile terminal and other information and distributes power for each reverse link power control channel transmitted to the mobile terminal in the sequence of superior ones to inferiors ones according to group priority of these mobile terminals and priority of these mobile terminals. Besides, the base station utilizes distributed power to transmit the reverse link power control channel to the mobile terminal. The present invention improves performance of services on reverse links of wireless communication systems featuring strict requirements for QoS.
Description
Technical field
The present invention relates to wireless communication field, relate more specifically in wireless communication system, control the method that sends to the mobile terminal power amount from the base station.
Background technology
In DS-CDMA (direct sequence CDMA) system, different mobile terminal is simultaneously with work frequently, system is by distributing different code words to communicate (being commonly referred to Code Channel) for each portable terminal, and this makes the capacity of system and performance depend on the interference that portable terminal is suffered to a great extent.In CDMA (code division multiple access) system, any method that reduces the suffered interference of portable terminal will make that all the performance of system is improved.Power control techniques has become a kind of key technology of cdma communication system as reducing a kind of effective means of disturbing between system channel.
Usually, the base station is responsible for sending complete CDMA Channel (set of all portable terminal Code Channel) to all portable terminals by single amplifier, and the gross output amount that this amplifier can provide generally has a limit, this means that the power that sends is many more on a Code Channel, the available power of other Code Channel is just few more, even some Code Channel can occur and do not have available transmitting power, therefore, be each Code Channel that transmitting power is assigned in the identical CDMA Channel with holding water very important according to certain suitable manner.
Present existing power distribution method can be with reference to the Chinese patent application (publication number is CN1343398A) " method of transmitting channel quality information and power division in wireless communication system " of Lucent Technologies; the Chinese patent application of Huawei Tech Co., Ltd (publication number is CN1315788A) documents such as " CDMA communication system forward power saturation protecting method and output control devices "; but these methods are failed well the The function of backward power control channel of the portable terminal that sends to different service types classified and are obtained power distribution method preferably; thereby reduced the reverse performance of wireless communication system; especially can influence the popularization that among the HRPD (High Rate Packet Data, high-speed grouped data system) QoS (Quality ofService) is had the business of strict demand.
Summary of the invention
Technical problem to be solved by this invention provides controls the method that sends to the mobile terminal power amount from the base station in a kind of wireless communication system, thereby improves the performance of services that QoS is had strict demand on reverse links of wireless communication systems.
In order to solve the problems of the technologies described above, the invention provides the power distribution method on the reverse link power control channel in a kind of wireless communication system, may further comprise the steps:
(a) determine to be used in power of amount P total on the reverse link power control channel by the base station
t
(b) described base station determines to distribute to the quantity of power of the reverse link power control channel of current each portable terminal according to the portable terminal of each mobile terminal reporting to the quality information of the Forward Pilot Channel of base station, if the power summation P of the reverse link power control channel that all portable terminals need distribute
Sum＜=P
t, then all portable terminal carries out power division according to the quantity of power on the reverse link power control channel of correspondence, changes step (d) over to; If the power summation P of the reverse link power control channel that all portable terminals need distribute
Sum＞P
t, then change step (c) over to;
(c) described base station is according to the situation of change of the forward channel quality information of mobile terminal reporting, and the type of service stream information of initiating according to portable terminal is divided into a plurality of groups with different priorities to portable terminal, according to portable terminal packet-priority order from high to low the portable terminal in each group is carried out power division, up to power of amount P
tTill distributing;
(d) described base station utilizes the quantity of power of distributing to launch reverse link power control channel to portable terminal.
Further, said method also can comprise: in the described step (c), portable terminal in each group is also carried out the division of priority, when portable terminal carries out power division in to every group, according to priority order is from high to low carried out power division to the reverse link power control channel of portable terminal, as power of amount P
tDistribute, then direct execution in step (d) then continues the portable terminal in next priority packet is distributed as unallocated finishing.
Further, said method also can comprise: in the described step (b), the portable terminal of described each mobile terminal reporting is the data rate control DRC information of each mobile terminal reporting to the quality information of the Forward Pilot Channel of base station, and the described quantity of power of distributing to the reverse link power control channel of current each portable terminal is to look into the quantity of power that portable terminal DRC information and the mobile terminal power amount table of comparisons obtain.
Further, said method also can comprise: in the described step (b), work as P
Sum＜=P
tThe time another situation, described base station is with dump power (P
t-P
Sum) distribute to each portable terminal, or dump power (P
t-P
Sum) distribute to the medium access control MAC channel of other non-return link power control channel, change step (d) over to.
Further, said method also can comprise: in the described step (c), it is three groups that described type of service stream information of initiating according to portable terminal is divided into a plurality of groups to portable terminal, be respectively EF group portable terminal, AF group portable terminal and BE group portable terminal, wherein EF group portable terminal promptly quickens forwarding group portable terminal, AF group portable terminal promptly guarantees forwarding group portable terminal, the BE group portable terminal forwarding group portable terminal of promptly doing one's best; Wherein this EF group portable terminal is the portable terminal that the high type of service of the little real-time of data volume flows, this AF group portable terminal is the portable terminal of the higher type of service stream of the big real-time of data volume, this BE group portable terminal is after removing this EF group portable terminal and this AF group portable terminal in whole portable terminals, other portable terminal; Wherein the order of the packet-priority of this EF group portable terminal, this AF group portable terminal, this BE group portable terminal is first EF group portable terminal, next AF group portable terminal, last BE group portable terminal.
Further, said method also can comprise: in the described step (c), the priority ordering from high to low of portable terminal is carried out prioritization to the portable terminal in this group from big to small for the absolute value of controlling the difference of threshold value thresholding according to the signal to noise ratio of the mobile terminal backward pilot tone exterior ring power corresponding with the portable terminal of this group in described each group.
Further, said method also can comprise: with described BE group, portable terminal in AF group and the EF group is divided into Up group portable terminal and Down group portable terminal again according to the demand of backward power lifting, the priority of Up group is higher than the priority of Down group, the absolute value of controlling the difference of threshold value thresholding according to the signal to noise ratio of the mobile terminal backward pilot tone exterior ring power corresponding with this group portable terminal again in Up group and Down group carries out prioritization to the portable terminal in this group from big to small, in the step (c) described BE is organized, when the portable terminal in AF group and the EF group carries out power division, earlier the portable terminal in the Up group is carried out power division according to its priority size sequence, again the portable terminal in the Down group is carried out power division according to its priority size sequence, as power of amount P
tDistribute, then direct execution in step (d) then continues the portable terminal in next priority packet is distributed as unallocated finishing.
Compared with prior art, because the present invention adjusts the quantity of power of reverse link power control channel by the information of initiating according to portable terminal such as different service types stream in wireless communication system, thereby improve the performance of services that on the reverse links of wireless communication systems QoS is had strict demand.
Description of drawings
Fig. 1 is that base station of the present invention is based on the flow chart of different mobile terminal type of service to portable terminal emission reverse link power control channel;
Fig. 2 is reverse link power control channel is launched in the base station of first embodiment of the invention to portable terminal based on the different mobile terminal type of service a flow chart;
Fig. 3 is reverse link power control channel is launched in the base station of second embodiment of the invention to portable terminal based on the different mobile terminal type of service a flow chart.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
CDMA2000 EV-DO is a kind of wireless tranmission techniques that aims at mobile data applications and carried out optimization, with mainly be that 1x technology in order to optimize voice and moderate rate transfer of data is compared, the EV-DO technology has been done to optimize and improve at aspects such as capacity, message transmission rate and wireless interconnected accesses, fl transmission adopts time division multiplexing mode, and reverse transfer adopts the code division multiplexing mode.
In the CDMA2000 EV-DO system actual moving process, portable terminal determines that according to the quality of the forward pilot that receives forward direction should be with which kind of speed grade to oneself transmission data, and give the base station with this information real-time report by DRC (Data Rate Control) channel, the base station by dispatching algorithm decision whether at current time to the rate sending data of certain portable terminal according to its application, utilize reverse link power control channel in MAC (the Media Access Control) channel to portable terminal transmission power control information simultaneously.
First embodiment:
Described concrete use of method in CDMA2000 EV-DO system that the present invention proposes among Fig. 2, concrete steps are as follows:
Step (a), power of amount P total on the reverse link power control channel is determined can be used in the base station
t, change step (b) over to;
Step (b), the base station comprises the corresponding quantity of power of DRC information of searching current each mobile terminal reporting in the table of DRC information and quantity of power according to the DRC information of each mobile terminal reporting at one, the quantity of power that obtains tabling look-up is as the quantity of power of the reverse link power control channel of distributing to each portable terminal, if these quantity of power with value P
Sum＜=P
t, then all portable terminal obtains to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, and alternatively, the base station can be with dump power (P
t-P
Sum) distribute to each portable terminal, each portable terminal is added general orientation power, or this dump power is distributed to the MAC channel of other non-return link power control channel, change step (g) over to; Otherwise step of changing over to (c);
Step (c), the type of service stream that initiate according to portable terminal the base station is divided into BE (BestEffort) group portable terminal, AF (Assured Forwarding) group portable terminal and three groups of EF (ExpeditedForwarding) group portable terminal with portable terminal, changes step (d) over to;
Wherein EF group portable terminal promptly quickens forwarding group portable terminal, and AF group portable terminal promptly guarantees forwarding group portable terminal, the BE group portable terminal forwarding group portable terminal of promptly doing one's best; Wherein this EF group portable terminal is the portable terminal that the high type of service of the little real-time of data volume flows, this AF group portable terminal is the portable terminal of the higher type of service stream of the big real-time of data volume, this BE group portable terminal is after removing this EF group portable terminal and this AF group portable terminal in whole portable terminals, other portable terminal; Wherein the order of the packet-priority of this EF group portable terminal, this AF group portable terminal, this BE group portable terminal is first EF group portable terminal, next AF group portable terminal, last BE group portable terminal.
Step (d), base station are calculated the power sum P of the required reverse link power control channel of all portable terminals in the EF group
EFIf, P
EF＞P
tPortable terminal during then the absolute value of the difference of the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the EF group exterior ring power control threshold value thresholding corresponding with each portable terminal is organized EF from big to small sorts, according to the order after the ordering is that portable terminal in the EF group distributes power one by one, up to the power sum P of the n that has distributed portable terminal
EF_part＞P
tTill, then power is distributed to quantity of power that preceding (n-1) individual portable terminal in the EF group obtains according to tabling look-up before it in the base station, at this moment P
EF_partThe power sum that (n-1) individual portable terminal distributes before becoming in the EF group, n portable terminal obtains rest parts power (P
t-P
EF_part), the performance number of the distribution of the whole portable terminals in other EF that does not obtain to distribute group in part portable terminal and the AF group, the reverse link power control channel of the whole portable terminal correspondences in the BE group is 0, changes step (g) over to; If P
EF=P
tThen the whole portable terminals in the EF group obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number that the reverse link power control channel of the whole portable terminal correspondences in the whole portable terminals in the AF group, the BE group distributes is 0, changes step (g) over to; If P
EF＜P
t, then the whole portable terminals in the EF group obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change step (e) over to;
Step (e), base station are calculated the power sum P of the required reverse link power control channel of all portable terminals in the AF group
AFIf, P
AF＞(P
t-P
EF), portable terminal during then the absolute value of the difference of the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the AF group exterior ring power control threshold value thresholding corresponding with each portable terminal is organized AF from big to small sorts, according to the order after the ordering is that portable terminal in the AF group distributes power one by one, up to the power sum P that distributes n portable terminal
AF_part＞(P
t-P
EF) till, then power is distributed to quantity of power that preceding (t-1) individual portable terminal in the AF group obtains according to tabling look-up before it in the base station, at this moment P
AF_partThe power sum that (t-1) individual portable terminal distributes before becoming in the AF group, t portable terminal obtains rest parts power (P
t-P
EF-P
AF_part), the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in other AF that does not obtain to distribute group in part portable terminal, the BE group is 0, changes step (g) over to; If P
AF=(P
t-P
EF), then the whole portable terminals in the AF group obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, and the performance number that the reverse link power control channel of the whole portable terminal correspondences in the BE group distributes is 0, changes step (g) over to; If (P
EF+ P
AF)＜P
t, then the whole portable terminals in the AF group obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change step (f) over to;
Step (f), the absolute value of the difference of the exterior ring power control threshold value thresholding that the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the BE group is corresponding with each portable terminal sorts to the portable terminal in the BE group from big to small, according to the order after the ordering is that portable terminal in the BE group distributes power one by one, up to the power sum P of the m that has distributed portable terminal
BE_part＞(P
t-P
EF-P
AF) till, then power is distributed to quantity of power that preceding (m-1) individual portable terminal in the BE group obtains according to tabling look-up before it in the base station, at this moment P
BE_partThe power sum that (m-1) individual portable terminal distributes before becoming in the BE group, m portable terminal obtains rest parts power (P
t-P
EF-P
AF-P
BE_part), the performance number of the distribution of the reverse link power control channel of the part portable terminal correspondence in other BE that does not obtain to distribute group is 0, changes step (g) over to;
Step (g), base station utilize the quantity of power of distributing to launch reverse link power control channel to portable terminal.
Second embodiment:
Among Fig. 3, described method another concrete application in CDMA2000 EV-DO system that the present invention proposes, concrete steps are as follows:
The first step determines can be used on power of amount P total on the reverse link power control channel by the base station
t, changed for second step over to;
Second step, the base station comprises the corresponding quantity of power of DRC information of searching current each mobile terminal reporting in the table of DRC information and quantity of power according to DRC (the Data Rate Control) information of each mobile terminal reporting at one, the quantity of power that obtains tabling look-up is as the quantity of power of the reverse link power control channel of distributing to each portable terminal, if these quantity of power with value P
Sum＜=P
t, then all portable terminal obtains to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, and perhaps this base station can be with dump power (P
t-P
Sum) distribute to each portable terminal, each portable terminal is added general orientation power, or this dump power is distributed to the MAC channel of other non-return link power control channel, change final step over to; Otherwise changed for the 3rd step over to;
The 3rd step, the type of service stream that initiate according to portable terminal the base station is divided into BE (BestEffort) group portable terminal, AF (Assured Forwarding) group portable terminal and three groups of EF (ExpeditedForwarding) group portable terminal with portable terminal, changes for the 4th step over to;
Wherein EF group portable terminal promptly quickens forwarding group portable terminal, and AF group portable terminal promptly guarantees forwarding group portable terminal, the BE group portable terminal forwarding group portable terminal of promptly doing one's best; Wherein this EF group portable terminal is the portable terminal that the high type of service of the little real-time of data volume flows, this AF group portable terminal is the portable terminal of the higher type of service stream of the big real-time of data volume, this BE group portable terminal is after removing this EF group portable terminal and this AF group portable terminal in whole portable terminals, other portable terminal; Wherein the order of the packet-priority of this EF group portable terminal, this AF group portable terminal, this BE group portable terminal is first EF group portable terminal, next AF group portable terminal, last BE group portable terminal.
In the 4th step, the power sum P of the required reverse link power control channel of all portable terminals in the EF group portable terminal is calculated in the base station
EFIf, P
EF＞P
t, then the portable terminal in the EF group portable terminal is divided into two groups of EF-Up group portable terminal, EF-Down group portable terminals according to the demand of backward power lifting, changed for the 5th step over to; If P
EF=P
tThen the whole portable terminals in the EF group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number that the reverse link power control channel of the whole portable terminal correspondences in the whole portable terminals in the AF group portable terminal, the BE group portable terminal distributes is 0, changes final step over to; If P
EF＜P
t, then the whole portable terminals in the EF group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change for the 7th step over to;
Grouping in the EF group portable terminal is to carry out according to the result of base station to mobile terminal power control in this group, control has three kinds of states usually: ascending power to mobile terminal power in the base station, reduce power, keep power (not needing the base station to send content) so do not need to this state assignment power to portable terminal.Wherein the condition that rises of backward power is meant that the base station receives that the quality of the pilot channel that portable terminal is sent is lower than the thresholding that exterior ring power control is determined, the energy that the emission of this portable terminal is described has been lower than the base station and has been correctly decoded required energy, and the base station tells portable terminal can improve its transmitting power; Wherein the condition that reduces of backward power is meant that the base station receives that the quality of the pilot channel that portable terminal is sent is higher than the thresholding that exterior ring power control is determined, the energy that this portable terminal emission is described is correctly decoded required energy above the base station, and the base station tells portable terminal can reduce its transmitting power.
In the 5th step, the power sum P of the required reverse link power control channel of all portable terminals in the EF-Up group portable terminal is calculated in the base station
EfupIf, P
Efup＞P
tThen the absolute value of the difference of the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the EF-Up group portable terminal exterior ring power control threshold value thresholding corresponding with each portable terminal sorts to the portable terminal that EF-Up organizes in the portable terminal from big to small, according to the order after the ordering is that the portable terminal that EF-Up organizes in the portable terminal distributes power one by one, up to the power sum P of the n that has distributed portable terminal
Efup_part＞P
tTill, then power is distributed to quantity of power that preceding (n-1) individual portable terminal in the EF-Up group portable terminal obtains according to tabling look-up before it in the base station, at this moment P
Efup_partThe power sum that (n-1) individual portable terminal distributes before becoming in the EF-Up group portable terminal, n portable terminal obtains rest parts power (P
t-P
Efup_part), the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in other EF-Up that does not obtain to distribute group portable terminal in part portable terminal and AF group portable terminal, the BE group portable terminal is 0, changes final step over to; If P
Efup=P
tThen the whole portable terminals in the EF-Up group portable terminal carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in EF-Down group portable terminal, AF group portable terminal, the BE group portable terminal is 0, changes final step over to; If P
Efup＜P
t, then the whole portable terminals in the EF-Up group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change for the 6th step over to;
The 6th step, the absolute value of the difference of the exterior ring power control threshold value thresholding that the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in EF-Down group portable terminal is corresponding with each portable terminal sorts to the portable terminal in the EF-Down group portable terminal from big to small, according to the order after the ordering is that the portable terminal that EF-Down organizes in the portable terminal distributes power one by one, up to the power sum P of the m that has distributed portable terminal
Efdown_part＞(P
t-P
Efup) till, then power is distributed to quantity of power that preceding (m-1) individual portable terminal in the EF-Down group portable terminal obtains according to tabling look-up before it in the base station, at this moment P
Efdown_partThe power sum that (m-1) individual portable terminal distributes before becoming in the EF-Down group portable terminal, m portable terminal obtains rest parts power (P
t-P
Efup-P
Efdown_part), the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in part portable terminal in other EF-Down that does not obtain to distribute group portable terminal and AF group portable terminal, the BE group portable terminal is 0, changes final step over to;
In the 7th step, the power sum P of the required reverse link power control channel of all portable terminals in the AF group portable terminal is calculated in the base station
AFIf, P
AF＞(P
t-P
EF), then the portable terminal in the AF group portable terminal is divided into two groups of AF-Up group portable terminal, AF-Down group portable terminals according to the demand of backward power lifting, changed for the 8th step over to; If P
AF=(P
t-P
EF), then the whole portable terminals in the AF group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number that the reverse link power control channel of the whole portable terminal correspondences in the BE group portable terminal distributes is 0, changes final step over to; If P
AF＜(P
t-P
EF), then the whole portable terminals in the AF group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the base station is divided into two groups of BE-Up group portable terminal, BE-Down group portable terminals to the portable terminal in the BE group portable terminal according to the demand of backward power lifting, changes for the tenth step over to;
In the 8th step, the power sum P of the required reverse link power control channel of all portable terminals in the AF-Up group portable terminal is calculated in the base station
AfupIf, P
Afup＞(P
t-P
EF), then the absolute value of the difference of the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the AF-Up group portable terminal exterior ring power control threshold value thresholding corresponding with each portable terminal sorts to the portable terminal that AF-Up organizes in the portable terminal from big to small, according to the order after the ordering is that the portable terminal that AF-Up organizes in the portable terminal distributes power one by one, up to the power sum P of the n that has distributed portable terminal
Afup_part＞(P
t-P
EF) till, then power is distributed to quantity of power that preceding (n-1) individual portable terminal in the AF-Up group portable terminal obtains according to tabling look-up before it in the base station, at this moment P
Afup_partThe power sum that (n-1) individual portable terminal distributes before becoming in the AF-Up group portable terminal, n portable terminal obtains rest parts power (P
t-P
EF-P
Afup_part), the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in other AF-Up that does not obtain to distribute group portable terminal in part portable terminal and AF-Down group portable terminal, the BE group is 0, changes final step over to; If P
Afup=(P
t-P
EF), then the whole portable terminals in the AF-Up group portable terminal carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in AF-Down group portable terminal, the BE group is 0, changes final step over to; If P
Afup＜(P
t-P
EF), then the whole portable terminals in the AF-Up group obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change for the 9th step over to;
The 9th step, the absolute value of the difference of the exterior ring power control threshold value thresholding that the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in AF-Down group portable terminal is corresponding with each portable terminal sorts to the portable terminal in the AF-Down group portable terminal from big to small, according to the order after the ordering is that the portable terminal that AF-Down organizes in the portable terminal distributes power one by one, up to the power sum P of the m that has distributed portable terminal
Afdown_part＞(P
t-P
EF-P
Afup) till, then power is distributed to quantity of power that preceding (m-1) individual portable terminal in the AF-Down group obtains according to tabling look-up before it in the base station, at this moment P
Afdown_partThe power sum that (m-1) individual portable terminal distributes before becoming in the AF-Down group portable terminal, m portable terminal obtains rest parts power (P
t-P
EF-P
Afup-P
Afdown_part), the performance number of the distribution of the part portable terminal in other AF-Down that does not obtain to distribute group portable terminal and the reverse link power control channel of the whole portable terminal correspondences in the BE group portable terminal is 0, changes final step over to;
In the tenth step, the power sum P of the required reverse link power control channel of all portable terminals in the BE-Up group portable terminal is calculated in the base station
BeupIf, P
Beup＞(P
t-P
EF-P
AF), then the absolute value of the difference of the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in the BE-Up group portable terminal exterior ring power control threshold value thresholding corresponding with each portable terminal sorts to the portable terminal that BE-Up organizes in the portable terminal from big to small, according to the order after the ordering is that the portable terminal that BE-Up organizes in the portable terminal distributes power one by one, up to the power sum P of the n that has distributed portable terminal
Beup_part＞(P
t-P
EF-P
AF) till, then power is distributed to quantity of power that preceding (n-1) individual portable terminal in the BE-Up group portable terminal obtains according to tabling look-up before it in the base station, at this moment P
Beup_partThe power sum that (n-1) individual portable terminal distributes before becoming in the BE-Up group portable terminal, n portable terminal obtains rest parts power (P
t-P
EF-P
AF-P
Beup_part), the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in other BE-Up that does not obtain to distribute group portable terminal in part portable terminal and the BE-Down group portable terminal is 0, changes final step over to; If P
Beup=(P
t-P
EF-P
AF), then the whole portable terminals in the BE-Up group portable terminal carry out power division according to the quantity of power on the reverse link power control channel of correspondence, the performance number of the distribution of the reverse link power control channel of the whole portable terminal correspondences in the BE-Down group portable terminal is 0, changes final step over to; If P
Efup＜(P
t-P
EF-P
AF), then the whole portable terminals in the BE-Up group portable terminal obtain to carry out power division according to the quantity of power on the reverse link power control channel of correspondence, change for the 11 step over to;
The 11 step, the absolute value of the difference of the exterior ring power control threshold value thresholding that the signal to noise ratio of each the mobile terminal backward pilot tone that receives according to the base station in BE-Down group portable terminal is corresponding with each portable terminal sorts to the portable terminal in the BE-Down group portable terminal from big to small, according to the order after the ordering is that the portable terminal that BE-Down organizes in the portable terminal distributes power one by one, up to the power sum P of the m that has distributed portable terminal
Bedown_part＞(P
t-P
EF-P
AF-P
Beup) till, then power is distributed to quantity of power that preceding (m-1) individual portable terminal in the BE-Down group portable terminal obtains according to tabling look-up before it in the base station, at this moment P
Bedown_partThe power sum that (m-1) individual portable terminal distributes before becoming in the BE-Down group portable terminal, m portable terminal obtains rest parts power (P
t-P
EF-P
AF-P
Beup-P
Bedown_part), the performance number of the distribution of the reverse link power control channel of the part portable terminal correspondence in other BE-Down that does not obtain to distribute group portable terminal is 0, changes final step over to;
In the 12 step, the base station utilizes the quantity of power of distributing to launch reverse link power control channel to portable terminal.
The above only is an illustrated embodiment of the present invention, should know that this can have many modification, this modification is not considered to break away from the spirit and scope of illustrated embodiment of the present invention, and the conspicuous modification of all such those of ordinary skills is within the scope of the appended claims involved.
Claims (7)
1. the power distribution method on the reverse link power control channel in the wireless communication system may further comprise the steps:
(a) determine to be used in power of amount P total on the reverse link power control channel by the base station
t
(b) described base station determines to distribute to the quantity of power of the reverse link power control channel of current each portable terminal according to the portable terminal of each mobile terminal reporting to the quality information of the Forward Pilot Channel of base station, if the power summation P of the reverse link power control channel that all portable terminals need distribute
Sum＜=P
t, then all portable terminal carries out power division according to the quantity of power on the reverse link power control channel of correspondence, changes step (d) over to; If the power summation P of the reverse link power control channel that all portable terminals need distribute
Sum＞P
t, then change step (c) over to;
(c) described base station is according to the situation of change of the forward channel quality information of mobile terminal reporting, and the type of service stream information of initiating according to portable terminal is divided into a plurality of groups with different priorities to portable terminal, according to portable terminal packet-priority order from high to low the portable terminal in each group is carried out power division, up to power of amount P
tTill distributing;
(d) described base station utilizes the quantity of power of distributing to launch reverse link power control channel to portable terminal.
2. the method for claim 1, it is characterized in that, in the described step (c), portable terminal in each group is also carried out the division of priority, when portable terminal carries out power division in to every group, according to priority order is from high to low carried out power division to the reverse link power control channel of portable terminal, as power of amount P
tDistribute, then direct execution in step (d) then continues the portable terminal in next priority packet is distributed as unallocated finishing.
3. the method for claim 1, it is characterized in that, in the described step (b), the portable terminal of described each mobile terminal reporting is the data rate control DRC information of each mobile terminal reporting to the quality information of the Forward Pilot Channel of base station, and the described quantity of power of distributing to the reverse link power control channel of current each portable terminal is to look into the quantity of power that portable terminal DRC information and the mobile terminal power amount table of comparisons obtain.
4. the method for claim 1 is characterized in that, in the described step (b), works as P
Sum＜=P
tThe time another situation, described base station is with dump power (P
t-P
Sum) distribute to each portable terminal, or dump power (P
t-P
Sum) distribute to the medium access control MAC channel of other non-return link power control channel, change step (d) over to.
5. as claim 1,2,3 or 4 described methods, it is characterized in that, in the described step (c), it is three groups that described type of service stream information of initiating according to portable terminal is divided into a plurality of groups to portable terminal, be respectively EF group portable terminal, AF group portable terminal and BE group portable terminal, wherein EF group portable terminal promptly quickens forwarding group portable terminal, and AF group portable terminal promptly guarantees forwarding group portable terminal, the BE group portable terminal forwarding group portable terminal of promptly doing one's best; Wherein this EF group portable terminal is the portable terminal that the high type of service of the little real-time of data volume flows, this AF group portable terminal is the portable terminal of the higher type of service stream of the big real-time of data volume, this BE group portable terminal is after removing this EF group portable terminal and this AF group portable terminal in whole portable terminals, other portable terminal; Wherein the order of the packet-priority of this EF group portable terminal, this AF group portable terminal, this BE group portable terminal is first EF group portable terminal, next AF group portable terminal, last BE group portable terminal.
6. method as claimed in claim 2, it is characterized in that, in the described step (c), the priority ordering from high to low of portable terminal is carried out prioritization to the portable terminal in this group from big to small for the absolute value of controlling the difference of threshold value thresholding according to the signal to noise ratio of the mobile terminal backward pilot tone exterior ring power corresponding with the portable terminal of this group in described each group.
7. method as claimed in claim 5, it is characterized in that, with described BE group, portable terminal in AF group and the EF group is divided into Up group portable terminal and Down group portable terminal again according to the demand of backward power lifting, the priority of Up group is higher than the priority of Down group, the absolute value of controlling the difference of threshold value thresholding according to the signal to noise ratio of the mobile terminal backward pilot tone exterior ring power corresponding with this group portable terminal again in Up group and Down group carries out prioritization to the portable terminal in this group from big to small, in the step (c) described BE is organized, when the portable terminal in AF group and the EF group carries out power division, earlier the portable terminal in the Up group is carried out power division according to its priority size sequence, again the portable terminal in the Down group is carried out power division according to its priority size sequence, t distributes as power of amount P, then direct execution in step (d) then continues the portable terminal in next priority packet is distributed as unallocated finishing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100056806A CN101141158B (en) | 2007-03-13 | 2007-03-13 | Service types based power distribution method on reverse link power control channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100056806A CN101141158B (en) | 2007-03-13 | 2007-03-13 | Service types based power distribution method on reverse link power control channel |
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| CN101141158B CN101141158B (en) | 2011-05-11 |
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| DE60040137D1 (en) * | 1999-03-12 | 2008-10-16 | Qualcomm Inc | METHOD AND DEVICE FOR PERFORMANCE ALLOCATION TO A REVERSE POWER CONTROL OF A COMMUNICATION SYSTEM |
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