CN101083494B - Method for transmission power control based on evaluation of a reverse activity bit and data flow specific upward/downward ramping functions, and corresponding wireless access terminal - Google Patents

Abstract

An access terminal (206) is configured for wireless communication with an access network (204) within a sector (1032). The access terminal (206) includes a transmitter (2608) for transmitting a reverse traffic channel to the access network (204), an antenna (2614) for receiving signals from the access network (204), a processor (2602) and memory (2604) in electronic communication with the processor (2602). Instructions are stored in the memory (2604). The instructions are executable estimate a current value of a reverse activity bit (1444) transmitted by the access network (204). Per flow power allocation may be decreased on increased based on an estimated current value of the reverse activity bit.

Description

Be used for transmitting the method and apparatus of grouping

Require the priority under 35 sections 119 in U.S.

The application requires the 60/487th of submission on July 15th, 2003, No. 648, title is " the reverse link Differentiated Services (Reverse Link Differentiated Services for a Multiflow Communication System Using Autonomous Allocation) of using autonomous multi-flow type communication system of distributing " and the priority that transfers its assignee's provisional application, thereby is combined in herein as a reference especially.

Present patent application also requires the 60/493rd of submission on August 6th, 2003, No. 782, title is " cooperation of distributed communication system distributes (Cooperative Autonomous And Scheduled Resource Allocation For A Distributed Communication System) from the scheduling resource of advocating peace " and the priority that transfers its assignee's provisional application, thereby and is combined in herein as a reference especially.

Present patent application also requires the 60/527th of submission on December 3rd, 2003, No. 081, title is " the multi-flow type reverse link MAC of communication system (Multiflow Reverse Link MAC for a Communication System) " and the priority that transfers its assignee's provisional application, thereby and is combined in herein as a reference especially.

Technical field

The present invention relates generally to wireless communication system, more specifically, relate to the improvement in the operation of the medium access control (MAC) that the accesses terminal layer in the wireless communication system.

Background technology

The communication system of having developed allows from the starting station to physically different point of destination emission information signals.From the process of starting station emission information signal, information signal at first is transformed into the form that is adapted at effective transmission on the communication channel on communication channel.The conversion of information signal or modulation relate to according to information signal and change carrier parameter by this way, and the frequency spectrum of the modulated carrier that namely obtains is limited within the bandwidth of communication channel.In the point of destination, the modulated carrier that receives from communication channel reappears the initial information signal.This reproduction is normally reached by the inverse process that uses modulated process by the starting station.

Modulation has also utilized the multiple access of several signals on common communication channel to insert, and namely transmits simultaneously and/or receives.Multiple access to communication system generally includes a plurality of remote subscriber units, and the service at intermittence that it needs is shorter than inserting the required duration of common communication channel continuously.Several known multiple access techniques are arranged in the art, as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) and amplitude modulation multiple access (AM).

Multiple access to communication system can be wireless or wired, and can transmit voice and/or data.In multiple access to communication system, the communication between the user is undertaken by one or more base station.First user on subscriber station by on reverse link to base station emission data, communicate with second user on second subscriber station.The base station receives data, and these data can be delivered to another base station.These data are launched into second subscriber station on the forward channel of same base station or other base station.Forward channel refers to from the base station to the emission of subscriber station, and backward channel refers to the emission from subscriber station to the base station.Equally, communication can be carried out between first user on the mobile subscriber station and second user on the land line station.The base station receives from user's data at backward channel, and gives second user by public switch telephone network (PSTN) with this data route.In a lot of communication systems, for example, IS-95, W-CDMA, IS-2000, forward channel and backward channel are assigned independent frequency.

An example of data-optimized communication systems is high data rate (HDR) communication system.In the HDR communication system, the base station refers to access network (AN) sometimes, and distant station refers to access terminal (AT) sometimes.The performed function of AT can system turn to many layers, comprises the MAC layer.The layer that the MAC course is higher provides some service, comprises the service about the backward channel operation.Improve by the operation to the MAC layer of the AT in the wireless communication system, can realize its benefit.

Summary of the invention

Herein disclosed is a kind of in the sector, being disposed for and carry out accessing terminal of radio communication with access network.This access terminal comprise for to the reflector of access network emission reverse traffic channel, be used for receiving the antenna, processor of signal and carrying out memory in electronic communication with this processor from access network.Instruction is stored in the memory.These instructions can carry out to implement the method about the currency of estimating the counter actuation blt that access network is launched.

If it is busy that the currency of the counter actuation blt of estimating shows this sector, this method also relates to the current power of each stream in a plurality of streams that reduce on accessing terminal and distributes.Can be according to the magnitude of determining for the downslope function (downward ramping function) of this stream design specific stream is reduced.The downslope function can be the function that the current power of this stream is distributed.

If the currency of the counter actuation blt of estimating shows this sectors free, then this method also relates to the current power distribution of each stream in a plurality of streams that increase on accessing terminal.Can be according to the magnitude of determining for the upslope function (upward ramping function) of this stream design specific stream is increased.The upslope function can be the function that the current power of this stream is distributed.

In certain embodiments, the currency of estimating counter actuation blt can be carried out once at each time slot.This estimation can comprise with the filter with adjustable time constant, the signal that receives from access network is carried out filtering.

This method can comprise that in addition the load level of estimating the sector and the peak power of determining each stream in a plurality of streams distribute.Distribute for the peak power of specific stream can be to the current power of this stream and distribute and to the function of the estimation of this sector load level.

In certain embodiments, this method comprises in addition, for each stream, determines that the integral power of this stream is distributed.The current power of this stream is distributed and is somebody's turn to do the integral power distribution of flowing can be for total available horsepower of determining this stream.Total available horsepower of this stream can be used for determining being transmitted into the power level of the grouping of access network.In certain embodiments, can limit the integral power distribution of stream with saturated level.Saturated level can be to be higher than the arranged factor that peak power is distributed.

Downslope function and upslope function can all depend on the estimation to the load level of sector.Alternately, perhaps in addition, downslope function and upslope function can all depend on the pilot frequency intensity that accesses terminal and measure.

This paper also discloses another embodiment that accesses terminal, and accesses terminal to be configured to carry out radio communication with access network in the sector.Access terminal and comprise for the device of estimation by the counter actuation blt currency of access network emission.

Access terminal and also comprise for the currency at the counter actuation blt of estimating and show under the busy situation in this sector the current power assigned unit of each stream in a plurality of streams on reducing to access terminal.Can be according to the magnitude of determining for the downslope function of this stream design to reduce for specific stream.The downslope function can be the function that the current power of this stream is distributed.

Access terminal and comprise that also the currency at the counter actuation blt of estimating shows under the situation of this sectors free, increases the current power assigned unit of each stream in a plurality of streams on accessing terminal.Can be according to the magnitude of determining for the upslope function of this stream design to increase for specific stream.The upslope function can be the function that the current power of this stream is distributed.

Access terminal and to comprise device for the load level of estimating the sector.Access terminal and to comprise peak power assigned unit for each stream of determining a plurality of streams.It can be that the current power of this stream is distributed and the function of the load level estimation of sector that the peak power of specific stream is distributed.

Access terminal and to comprise, for each stream, be used for to determine the cumulative power assigned unit of this stream and be used for using the current power of this stream to distribute and the cumulative power of this stream distributes to determine the device of total available horsepower of this stream.Access terminal and to comprise the device of power level of determining to be transmitted into the grouping of access network be used to total available horsepower of utilizing this stream.

Description of drawings

Fig. 1 shows the example of a communication system, and this communication system is supported many users, and can implement some aspect at least of embodiment discussed herein;

The block diagram that Fig. 2 shows the access network in the high data rate communication system and accesses terminal;

The block diagram of the many layers on Fig. 3 shows and accesses terminal;

Higher level on Fig. 4 shows and accesses terminal, media access control layer, and the exemplary interactional block diagram between the physical layer;

Fig. 5 A shows the block diagram of the high power capacity grouping that just is transmitted to access network;

Fig. 5 B shows the block diagram of the low latency grouping that just is transmitted to access network;

Fig. 6 shows the block diagram that can be present in the dissimilar streams on the access network;

Fig. 7 shows the block diagram of the exemplary flow set of high power capacity grouping;

Fig. 8 shows the block diagram of the exemplary flow set of low latency grouping;

During showing that can remain on accesses terminal and go up and close with the adfluxion of determining the low latency grouping, Fig. 9 whether includes the block diagram of the information of high capacity flow;

Figure 10 shows a plurality of block diagrams that access terminal in access network and the sector;

Figure 11 shows the exemplary mechanism that can be used for determining total available horsepower of accessing terminal;

Figure 12 shows an embodiment, and wherein at least some in the accessing terminal in the sector comprise a plurality of streams;

Figure 13 shows to access terminal and can obtain a kind of method of the current power of distributing to the stream on accessing terminal;

Figure 14 shows from access network and is transmitted into the counter actuation blt that accesses terminal in the sector;

Figure 15 shows that can remain on accesses terminal and goes up the information with the current power of determining one or more stream on distributing to this accesses terminal;

The functional block diagram of the exemplary functional components of the estimation of the estimation that can be used for definite counter actuation blt during Figure 16 shows and accesses terminal and the current load level of this sector;

Figure 17 shows the flow chart be used to the exemplary method of the current power of determining to distribute to the stream on accessing terminal;

Figure 18 shows the block diagram that accesses terminal that the scheduler on the access network sends a request message;

Figure 19 shows that can remain on accesses terminal and goes up the block diagram that determines when the information that sends a request message to access network for accessing terminal;

Figure 20 shows the exemplary interactional block diagram between the accessing terminal in the scheduler that moves on the access network and the sector;

Figure 21 show the scheduler that moves on the access network and access terminal between another exemplary interactional block diagram;

Figure 22 shows the block diagram that scheduler from the access network is transmitted into another embodiment of the grant message that accesses terminal;

Figure 23 shows the block diagram of the power distribution that can be stored on accessing terminal;

Figure 24 shows the block diagram that can be stored in a plurality of transmission conditions on accessing terminal;

Figure 25 shows the flow chart of the exemplary method of access terminal the payload size that can carry out to determine grouping and power level; With

Figure 26 shows the functional block diagram of an embodiment who accesses terminal.

Embodiment

" exemplary " used herein this word refers to " playing example, example or example ".There is no need to think that any embodiment that is described as " exemplary " herein is more preferred or favourable than other embodiment.

Be noted that this discussion in the whole text in the one exemplary embodiment that provides be as an example; But alternate embodiments can not depart from the scope of the present invention in conjunction with different aspect.Particularly, the present invention can be applicable to data handling system, wireless communication system, mobile IP network and needs reception and any other system of processing wireless signal.

One exemplary embodiment adopts spread spectrum radio communication system.Wireless communication system is extensively applied to the communication that provides dissimilar, as voice, data etc.These systems can be CDMA, TDMA or some other modulation techniques.Cdma system provides some advantage that is better than other type system, comprises the increase of power system capacity.

Wireless communication system can be designed as one or more standards of supporting, as being called " the TIA/EIA/IS-95-B travelling carriage-base station compatibility standard of dual mode wideband spread spectrum cellular " of IS-95 standard herein, comprising 3GPP TS 25.211 by what the association that is called " third generation partner program " that is called 3GPP herein provided, 3GPP TS 25.212,3GPP TS 25.213 and 3GPP TS 25.214, the standard of implementing in a series of files of No. 25.302 files of 3GPP TS, be called the W-CDMA standard in this article, the standard that is provided by the association of by name " third generation partner program 2 " that be called 3GPP2 herein, the TR-45.5 that is called the cdma2000 standard herein formally is called as IS-2000MC.These standards of above quoting are combined in herein accordingly especially as a reference.

System and method described herein can use with the HDR communication system.The HDR communication system can be designated as and meet one or more standards, and as " cdma2000 High Rate Packet Data air interface specification, " 3GPP2C.S0024-A, in March, 2004, front page is announced by " third generation partner program 2 " association.The content of above-mentioned standard is combined in herein as a reference.

The HDR subscriber station, it can be called AT in this article, can be mobile or fixing, and can with one or more HDR base station communications, the HDR base station can be called modem pool transceiver (MPT) in this article.Access terminal and launch and the reception packet to the HDR base station controller by one or more modem pool transceiver, the HDR base station controller can be called modem pool controller (MPC) in this article.Modem pool transceiver and modem pool controller are the parts that is called the network of access network.Access network transmits packet between a plurality of accessing terminal.Access network can further be connected to the outer other network of access network, as company intranet or internet, and can each access terminal and this external network between transmit packet.Set up and accessing terminal that the effective traffic channel of one or more modem pool transceiver is connected, be called effectively and access terminal, and considered to be in service condition.In the effective traffic channel connection procedure of setting up with one or more modem pool transceiver access terminal to considered to be in is connected the state of foundation.Accessing terminal can be by wireless channel or by wire message way (for example using optical fiber or coaxial cable), any data equipment that communicates.Accessing terminal can also be any in the equipment of following many types, includes but not limited to: PC card, compact flash, outside or internal modems or radio telephone or landline telephone (1andline phone).Access terminal by its communication channel to modem pool transceiver transmission signal, be called backward channel.Modem pool transceiver sends the communication channel of signal by it to accessing terminal, and is called forward channel.

Fig. 1 shows an example of the communication system 100 of at least some aspects of supporting many users and can implementing embodiment discussed in this article.In various algorithms and the method any can be used for the transmission of dispatching patcher 100.System 100 provides communication for many residential quarter 102A-102G, and wherein each residential quarter is served by the base station 104A-104G of correspondence respectively.In an exemplary embodiment, some in the base station 104 has a plurality of reception antennas, and other base station has only a reception antenna.Similarly, some in the base station 104 has a plurality of transmitting antennas, and other base station has only independent transmitting antenna.In the combination of transmitting antenna and reception antenna without any restriction.Therefore, base station 104 can have a plurality of transmitting antennas and single reception antenna, perhaps has a plurality of reception antennas and single transmitting antenna, or to have the two all be single or all be a plurality of antennas that transmits and receives.

Remote terminal 106 in the area of coverage can be (that is, motionless) fixed or move.As shown in Figure 1, various remote terminal 106 is dispersed in whole system.Receive a plurality of emissions from a plurality of base stations based on for example whether adopting soft handover or terminal whether to be designed to or being operating as (concurrently or sequentially), each remote terminal 106, also can communicate with more base stations 104 with at least one on forward channel and backward channel at any given time.Soft handover in the cdma communication system is well-known in technical field, and at United States Patent (USP) the 5th, 101, No. 501, title is for having a detailed description in " for the method and system (Method and System for Providing a Soft Handoff inCommunications in a CDMA Cellular Telephone System) of the soft handover that the cdma cellular telephone system is provided ", and this patent has been transferred to assignee of the present invention.

Forward channel refers to 104 emissions to remote terminal 106 from the base station, and backward channel refers to from remote terminal 106 emission of 104 to the base station.In an exemplary embodiment, some in the remote terminal 106 have a plurality of reception antennas, and other remote terminal has only a reception antenna.In Fig. 1, to remote terminal 106A and 106J emission data, base station 104B is to remote terminal 106B and 106J emission data on forward channel for base station 104A, and base station 104C launches data to remote terminal 106C, etc.

In the HDR communication system, the base station is known as AN sometimes, and remote terminal is known as AT sometimes.Fig. 2 shows AN 204 and the AT 206 in the HDR communication system.

AT 206 and AN 204 carry out radio communication.As previously mentioned, backward channel refers to from AT206 to AN 204 emission.Reverse traffic channel 208 as shown in Figure 2.Reverse traffic channel 208 is parts of the backward channel of 204 transmission information from specific AT 206 to AN.Certainly, backward channel can comprise other channel except reverse traffic channel 208.Equally, forward channel can comprise a plurality of channels that comprise pilot channel.

The function of being carried out by At 206 can system turn to many layers.Fig. 3 shows the many layers on the AT 306.Among these layers, MAC layer 308 is arranged.More high-rise 310 are positioned on the MAC layer 308.MAC layer 308 provides some service to higher level 310, comprises the service about the operation of reverse traffic channel 208.MAC layer 308 comprises the enforcement of RTC MAC agreement 314.RTC MAC agreement 314 provides AT 306 emission reverse traffic channels 208 subsequently, and is received the process of reverse traffic channel 208 by AN 204.

Physical layer 312 is positioned under the MAC layer 308.MAC layer 308 is to physical layer 312 some service of request.These services relate to the physical transfer of the grouping of AN 204.

Fig. 4 shows the exemplary interaction between higher level 410, MAC layer 408 and the physical layer 412 on the AT 406.As shown in the figure, MAC layer 408 receives one or more streams 416 from higher level 410.Stream 416 is data flow.Typically, stream 416 is corresponding to concrete application, as the voice on the IP (VoIP), video telephone, file transfer protocol (FTP) (FTP), recreation etc.

Data from the stream 416 on the AT 406 are sent to AN 204 with being grouped.According to RTCMAC agreement 414, the MAC layer determines that the adfluxion of each grouping closes 418.Sometimes a plurality of streams 416 on the AT 406 will transmit data simultaneously.Grouping can comprise from the data more than a stream 416.But, can have one or more streams 416 will transmit data sometimes on the AT 406, but it is not included in the grouping.The adfluxion of grouping is closed the stream 416 on 418 AT406 that represent not to be included in the grouping.Be used for determining that the exemplary method of stream of packets set 418 will be in description after a while.

MAC layer 408 is also determined the payload size 420 of each grouping.What include in the payload size 420 expression groupings of grouping close 418 data from adfluxion.

MAC layer 408 is also determined the power level 422 of grouping.In certain embodiments, the power level 422 of grouping is to determine with respect to the power level of Reverse Pilot Channel.

For each grouping that will be sent to AN 204, MAC layer 408 to physical layer 412 pass on that the adfluxion that will be included in this grouping closes 418, the payload size 420 of this grouping and the power level 422 of this grouping.Then, the information that physical layer 412 provides according to MAC layer 308 realizes the transmitted in packets to AN 204.

Fig. 5 A and 5B show the grouping 524 that is sent to AN 504 from AT 506.Grouping 524 can be transmitted with a kind of pattern in several possible transmission modes.For example, in certain embodiments, two kinds of possibilities transmission mode, high power capacity transmission mode and low latency transmission modes are arranged.Fig. 5 A shows the high power capacity grouping 524a that is transferred to AN 504 grouping 524 of high power capacity mode transfer (that is, with).Fig. 5 B shows the low latency grouping 524b (that is the grouping 524b that transmits with low latency) that is transferred to AN 504.

Low latency grouping 524b transmits with the power level 422 higher than the high power capacity grouping 524a of same packets size.Therefore, low latency grouping 524b can more promptly arrive AN 504 than the high power capacity 524a that divides into groups.But low latency grouping 524b causes more loading than high power capacity grouping 524a in system 100.

Fig. 6 shows the dissimilar stream 616 that exists on the AT 606.In certain embodiments, the stream 616 of each on the AT 606 is relevant with specific transmission mode.Be under the situation of high power capacity transmission mode and low latency transmission mode in possible transmission mode, AT 606 can comprise one or more high capacity flow 616a and/or one or more low latency stream 616b.For high capacity flow 616a, preferably in high power capacity grouping 524a, transmit.For low latency stream 616b, preferably in low latency grouping 524b, transmit.

Fig. 7 shows the exemplary flow set 718 of high power capacity grouping 724a.In certain embodiments, all be high capacity flow 716a if all streams 716 of the data that will transmit are arranged, then transmit grouping 724a with the high power capacity pattern.Therefore, in such an embodiment, the adfluxion among the high power capacity grouping 724a is closed 718 and is only comprised high capacity flow 716a.Alternately, low latency stream 616b can be included among the high power capacity grouping 724a, with AT 606 by oneself.An exemplary reason will doing like this is that low latency stream 616b does not have enough throughputs at that time.For example, can detect the sequence of setting up low latency stream 616b.This stream can replace by using the high power capacity pattern, is that cost improves its throughput to increase the stand-by period.

Fig. 8 shows the exemplary flow set 818 of low latency grouping 824b.In certain embodiments, if the low latency stream 816b that has at least one to have the data that will transmit then transmits grouping 824b with the low latency pattern.Adfluxion among the low latency grouping 824b is closed 818 and is comprised each the low latency stream 816b with the data that will transmit.Close in 818 in adfluxion, also can comprise the one or more high capacity flow 816a with the data that will transmit.But, close in 818 in adfluxion, cannot comprise the one or more high capacity flow 816a with the data that will transmit.

Fig. 9 shows and remains on the AT 906 to be used for determining that the adfluxion of low latency grouping 824b closes the information that whether comprises high capacity flow 916a in 818.Each high capacity flow 916a on the AT 906 has a certain amount of data that can be used for transmitting 926.Equally, can merge threshold value 928 to each the high capacity flow 916a definition on the AT 906.In addition, can be on the whole the merging threshold value 930 of AT906 be defined.At last, when the estimation of the load level of sector during less than threshold value, the merging of high capacity flow can take place.(estimation of load level how to determine the sector will be described after a while.) that is to say that load fully after a little while when the sector, the efficiency losses of merging is inessential, and allows initiatively to use.

In certain embodiments, if any in satisfied two conditions then includes high capacity flow 916a in low latency grouping 524b.First condition is that for all the high capacity flow 916a on the AT 906, the total amount that can transmit data 926 surpasses the merging threshold value 930 that defines for AT 906.Second condition is for high capacity flow 916a, can transmit the merging threshold value 928 that data 926 surpass for high capacity flow 916a definition.

First condition relates to the power transfer from low latency grouping 824b to high power capacity grouping 724a.If do not comprise high capacity flow 916a among the low latency grouping 824b, as long as the data that can be used for transmitting from least one low latency stream 816b are then arranged, from the just increase of data of high capacity flow 916a.If allow to get up from the too much data accumulation of high capacity flow 916a, when then transmitting high power capacity grouping 724a, the unacceptable sharp-pointed power transition from last low latency grouping 824b to high power capacity grouping 724a may appear next time.Therefore, according to first condition, in case surpass certain value (by merging threshold value 930 definition) from the amount of the transmitted data 926 of high capacity flow 916a on the AT 906, then allowing data " mergings " from high capacity flow 916a is the low latency 824b that divides into groups.

Second condition relates to service quality (QoS) requirement of the high capacity flow 916a on the AT 906.If the merging threshold value 928 of high capacity flow 916a is set as very big value, then this represents high capacity flow 916a seldom, if once be included among the low latency grouping 824b.So this high capacity flow 916a may experience transmission delay, because as long as when existing at least one that low latency stream 816b that data will transmit is arranged, it just can not be transmitted.On the contrary, if the merging threshold value 928 of high capacity flow 916a is set as very little value, then this expression high capacity flow 916a almost is comprised among the low latency grouping 824b always.So, the unlikely experience transmission delay of this high capacity flow 916a.But this high capacity flow 916a more sector resources of using up transmit their data.

Advantageously, in certain embodiments, the merging threshold value 928 of some the high capacity flow 916a on the AT 906 can be set as very big value, and some other high capacity flow 916a on the AT 906 can be set as very little merging threshold value 928.Because the high capacity flow 916a of some types may have strict QOS requirement, and other do not have, so this design is favourable.The example of the stream 916a that has that strict QOS requires and can transmit with the high power capacity pattern is real-time video.Real-time video is to the bandwidth requirement height, and this makes that the efficiency of transmission under the low latency pattern is poor.But real-time video does not wish that any transmission delay is arranged.An example of the stream 916 that does not have strict QOS to require and can transmit with the high power capacity pattern is best effort (besteffort) stream 916.

Figure 10 shows AN 1004 and a plurality of AT 1006 in the sector 1032.Sector 1032 is geographic areas, can receive signal from AN 1004 by AT 1006 therein, and vice versa.

A character as some wireless communication systems of CDM system is that transmission interferes with each other.Therefore, the amount of the power that may use for the AT 1006 that guarantees do not have excessive interference between the AT 1006 in the identical sector 1032, limit generally to receive on the AN 1004.For guaranteeing AT1006 in this restriction, each AT 1006 in the sector 1032 can use the power 1034 of specified quantitative to be used in reverse traffic channel 208 transmission.Each AT 1006 arranges it at the power level 422 of the grouping 524 of reverse traffic channel 208 transmission, in order to be no more than its total available horsepower 1034.

The power level 1034 of distributing to AT 1006 can not equal AT 1006 just and be used for transmitting the power level 422 of grouping 524 at reverse traffic channel 208.For example, in certain embodiments, exist one group of discrete power level that AT 1006 selects from the process of the power level 422 of definite grouping 524.Total available horsepower 1034 of AT 1006 can not equal any one in these discrete power levels just.

The total available horsepower 1034 that allows accumulation not use at any given time is so that use it in the moment afterwards.Like this, in such an embodiment, total available horsepower 1034 (roughly) of AT 1006 equals current power and distributes 1034a to add the power division 1034b of the accumulation of certain part at least.AT 1006 determines the power level 422 of grouping 524, so that it is no more than total available horsepower 1034 of AT 1006.

Total available horsepower 1034 of AT 1006 can not be that the current power that always equals AT 1006 distributes 1034a to add the cumulative power distribution 1034b of AT 1006.In certain embodiments, can limit total available horsepower 1034 of AT 1006 with peak allocation 1034c.The peak allocation 1034c of AT 1006 can equal the current power of AT 1006 and distribute 1034a to multiply by certain restriction factor.For example, if restriction factor is 2, then the peak allocation 1034c of AT 1006 equals its current power and distributes two times of 1034a.In certain embodiments, restriction factor is the function of the current power distribution 1034a of AT 1006.

Suppose that the peak allocation 1034c of AT can limit the degree of the emission " sudden " (" bursty ") that allows AT 1006.For example, in certain period, the data that AT 1006 may will not transmit.During this period, power may be continued to distribute to AT 1006.Because data that will transmit not, so the power that accumulation distributes.Sometime, AT 1006 may have relative lot of data to transmit suddenly.At this constantly, the power division 1034b of accumulation may be sizable.If allow AT 1006 to use the power division 1034b of whole accumulation, then the transmitting power 422 of AT 1006 may occur unexpected, increase fast.But, if the transmitting power 422 of AT 1006 increases too fastly, then may influence the stability of system 100.So, under such a situation, can limit total available horsepower 1034 of AT 1006 for AT 1006 provides peak allocation 1034c.The power division 1034b that is noted that accumulation is still available, but when peak allocation 1034c was restricted, its use expanded in more groupings.

Figure 11 shows the exemplary mechanism of the total available horsepower 1034 that can be used for definite AT 206.The use of this mechanism relates to virtual " bucket (bucket) " 1136.With the time interval in cycle, new current power distributes 1034a to be added to bucket 1136.Equally with time interval in cycle, the power level 422 of the grouping 524 that is transmitted by AT 206 withdraws from bucket 1136.Current power distributes 1034a to surpass the amount of the power level 422 of grouping, is the power division 1034b of accumulation.The power division 1034b of accumulation is retained in the bucket 1136, till it is used.

Total available horsepower 1034 deducts current power and distributes 1034a, obtains the total potential that extracts from bucket 1136.AT 1006 guarantees that the power level 422 of the grouping 524 that it transmits is no more than total available horsepower 1034 of AT 1006.As previously mentioned, in some cases, total available horsepower 1034 distribute less than current power 1034a and accumulation power division 1034b's and.For example, can distribute 1034c to limit total available horsepower 1034 with peak power.

Can limit the power division 1034b of accumulation with saturated level 1135.In certain embodiments, saturated level 1135 is to allow AT 1006 to use its peak power to distribute the function of the time quantum of 1034c.

Figure 12 shows AT 1206 in the sector 1232 and at least some among the AN 1204 include an embodiment of a plurality of streams 1216.In such embodiments, can determine the independent amount of available horsepower 1238 for each stream 1216 on the AT 2006.Can determine the available horsepower 1238 of the stream 1216 on the AT 1206 according to the front in conjunction with the method that Figure 10-11 describes.More specifically, total available horsepower 1238 of stream 1216 can comprise the current power distribution 1238a of convection current 1216, adds at least some parts of the cumulative power distribution 1238b at upper reaches 1216.In addition, can limit total available horsepower 1238 of stream 1216 with the peak allocation 1238c of stream 1216.Can keep independent bucket mechanism for each flows 1216, as shown in Figure 11, so that determine total available horsepower 1238 of each stream 1216.Total available horsepower 1234 of AT 1206 can be by determining various flows 1216 total available horsepower 1238 summations on the AT 1206.

The different formulas used in total available horsepower 1238 of stream 1216 that can be on determining AT 1206 and the mathematical description of algorithm are provided below.In the equation that is described below, each subframe is determined total available horsepower 1238 of each a stream i on the AT 1206.(in certain embodiments, a subframe equals four time slots, and a time slot equals 5/3ms.) in equation, the total available horsepower 1238 that flows is expressed as PotentialT2POutflow.

Total available horsepower 1238 of the stream i that transmits in high power capacity grouping 524a can be expressed as:

$\mathrm{PotentialT}2\mathrm{POutflo}{w}_{i,\mathrm{HC}}=$

$\max \left(\begin{array}{c}0,\min \left(\begin{array}{c}(1+\mathrm{AllocationStagger}\×r_n)\×(\left(\frac{\mathrm{Bucket}{\mathrm{Level}}_{i,n}}{4}\right)+T2\mathrm{PInf}{\mathrm{low}}_{i,n}),\\ \mathrm{BucketFactor}(T2\mathrm{PI}{\mathrm{nflow}}_{i,n},{\mathrm{FRAB}}_{i,n})\×{T2\mathrm{PInflow}}_{i,n}\end{array}\right)\end{array}\right)---\left(1\right)$

Total available horsepower 1238 of the stream i that transmits in low latency grouping 524b can be expressed as:

$\mathrm{PotentialT}2\mathrm{PO}{\mathrm{utflow}}_{i,\mathrm{LL}}=$

$\max \left(\begin{array}{c}0,\min \end{array}\left(\begin{array}{c}(1+\mathrm{AllocationStagger}\×r_n)\×(\left(\frac{{\mathrm{BucketLevel}}_{i,n}}{2}\right)+{T2\mathrm{PInflow}}_{i,n}),\\ \mathrm{BucketFactor}(T2\mathrm{PI}{\mathrm{nflow}}_{i,n},{\mathrm{FRAB}}_{i,n})\×{T2\mathrm{PInflow}}_{i,n}\end{array}\right)\right)---\left(2\right)$

BucketLevel _{I, n}Be the power division 1238b that stream i accumulates at subframe n.T2PInflow _{I, n}Be to distribute 1238a in the current power of subframe n upper reaches i.Expression formula BucketFactor (T2PInflow _{I, n}, FRAB _{I, n}) * T2PInflow _{I, n}Be to distribute 1238c in the peak power of subframe n upper reaches i.BucketFactor (T2PInflow _{I, n}, FRAB _{I, n}) be the function for the restriction factor of determining total available horsepower 1238, namely allow to surpass the factor of distributing 1238a in the current power of subframe n upper reaches i in total available horsepower 1238 of subframe n upper reaches i.FRAB _{I, n}Be the estimation of the load level of sector 1232, and will carry out more detailed description hereinafter.AllocationStagger is for avoiding stationary problem, the amplitude of the random entry of vibration distribution level, and r _nIt is the equally distributed real-valued random number in [1,1] scope.

The cumulative power of stream i on subframe n+1 distributes 1238b to be expressed as:

BucketLevel _i，n+1＝

(3)

min((BucketLevel _i，n+T2PInflow _i，n-T2POutflow _i，n)，BucketLevelSat _i，n+1)

T2POutflow _{I, n}Be transmitting power 422 parts of distributing to stream I at subframe n.Provide T2POutflow below _{I, n}Exemplary equation.BucketLevelSat _{I, n+1}It is the saturated level 1135 that distributes 1238b in the cumulative power of subframe n+1 upper reaches i.

T2POutflow _{I, n}Can be expressed as:

${T2\mathrm{POutflow}}_{i,n}=\left(\frac{d_{i,n}}{{\mathrm{SumPayload}}_n}\right)\×{\mathrm{TxT}2P}_n---\left(4\right)$

In equation (4), d _{I, n}The flow automatically data volume of i, stream i is included in the son grouping that transmits during the subframe n.(son grouping is the packet partial that transmits during the subframe.) SumPayload _nBe d _{I, n}And.TxT2P _nIt is the power level 422 of the son grouping that during subframe n, transmits.

BucketLevelSat _{I, n+1}Can be expressed as:

BucketLevelSat _i，n+1＝

(5)

BurstDurationFactor _i×BucketFactor(T2PInflow _i，n，FRAB _i，n)×T2PInflow _i，n

BurstDurationFactor _iIt is the restriction that allows with on the time span of peak power distribution 1238c transmission stream i.

Figure 13 shows a kind of method that AT 1306 can obtain the current power distribution 1338a of the stream 1316 on the AT 1306.As shown in the figure, AT 1306 can receive grant message 1342 from the scheduler 1340 of AN 1304 operations.Grant message 1342 can comprise that some or all the current power in the stream 1316 on the AT 1306 distributes permission 1374.Distribute the current power of permission 1374, AT 1306 correspondences stream 1316 to distribute 1338a to be set to equal current power for each current power that receives and distribute permission 1374.

In certain embodiments, obtaining current power distribution 1338a is two a step process.The first step relates to the current power distribution permission 1374 that determines whether to receive from the stream 1316 of AN 1304.If no, then AT 1306 determines that independently the current power of stream 1216 distributes 1338a.In other words, AT 1306 determines the current power distribution 1338a of stream 1316, and can not be subjected to the interference from scheduler 1340.Below discussion relate to the exemplary method that current power that AT 1306 is used for independently determining the one or more streams 1316 on the AT 1306 is distributed 1338a.

Figure 14 shows the counter actuation blt (RAB) 1444 that is sent to AT 1406 in sector 1432 from AN 1404.RAB 1444 is overload indications.RAB 144 can be in two values, first value (for example ,+1) of hurrying at present in expression sector 1432, or expression sector 1432 present idle second value (for example ,-1).Will explain that below RAB 1444 can be used for determining the current power distribution 1238a of the stream 1216 on the AT 1206.

Figure 15 shows and may be retained on the AT 1506 so that determine the information that the current power of the one or more streams 1516 on the AT 1506 is distributed 1238a.In the exemplary embodiment, each stream 1516 is estimated to be associated with RAB 1444 " fast ".In this article, estimation will be known as QRAB 1546 fast.Will determine that the exemplary method of QRAB 1546 is described to being used for below.

Each stream 1516 also is associated with the estimation than the advantage load level of sector 1232, is called FRAB 1548 (its maintenance " filtered " RAB 1444) herein.FRAB 1548 is the real numbers in somewhere between two probable values of RAB 1444.FRAB 1548 from the value of the busy RAB 1444 in expression sector 1432 more close to, the load of sector 1432 is just more many.On the contrary, FRAB 1548 from the value of the RAB 1444 of expression 1432 free time of sector more close to, the load of sector 1432 is just more few.To determine that the exemplary method of FRAB 1548 is described to being used for below.

Each stream 1516 also is associated with upslope function (upward ramping function) 1550 and downslope function (downward ramping function) 1552.The upslope function 1550 that is associated with specific stream and downslope function 1552 are functions that the current power of stream 1516 is distributed 1238a.With the increase of the stream 1516 upslope functions that are associated 1550 for the current power distribution 1238a that determines stream 1516.On the contrary, be used for the minimizing of the current power distribution 1238a of definite stream 1516 with the stream 1516 downslope functions that are associated 1552.In certain embodiments, upslope function 1550 and downslope function 1552 depend on the value of FRAB 1548 and the current power distribution 1238a of stream 1516.

For each stream 1516 in the network, upslope function 1550 and downslope function 1552 are defined, and can download from the AN 1404 of the AT 1506 that controls this stream.Upslope function and downslope function distribute 1238a to be used as their independent variable the current power of stream.Upslope function 1550 will be known as gu in this article sometimes, and downslope function 1552 will be known as gd herein sometimes.We are called demand function with the ratio (also being the function that current power is distributed 1238a) of gu/gd.Can prove, under data and the effective condition of power that accesses terminal, reverse link (RL) medium access controls (MAC) layer algorithmic statement distributed 1238a in the current power of each stream 1516, like this, when the branch timing of the stream of getting them, all stream demand function values equate.Utilize this fact, by careful design flow demand function, can realize planning and require identical general mapping with the accessible any stream that resource is distributed of centralized scheduler.But the demand function method is to realize this general dispatching with minimum control signaling and fully decentralized mode.

The block diagram of Figure 16 shows the exemplary functional components among the AT1606 that can be used for definite QRAB 1646 and FRAB 1648.As shown in the figure, AT 1606 can comprise RAB demodulation components 1654, mapper 1656, the first and second one pole iir filters 1658,1660 and limiting device 1662.

RAB 1644 is sent to AT 1606 from AN 1604 through communication channel 1664.The signal that the known standard technique of the RAB demodulation components skilled professional and technical personnel in 1654 usefulness this areas comes demodulation to receive.RAB demodulation components 1654 output log-likelihood ratios (LLR) 1666.As a value between the probable value (for example ,+1 and-1) of importing and LLR is mapped to RAB 1644, it is the estimation to the RAB of this time slot emission to mapper 1656 with LLR 1666.

The output of mapper 1656 is provided for the first one pole iir filter 1658.First iir filter, 1658 free constant τ _sThe output of first iir filter 1658 is provided for limiting device 1662.Limiting device 1662 converts the output of first iir filter 1658 corresponding to one in two probable values of two probable values of RAB 1644 to.For example, if RAB1644 be-1 or+1, then limiting device 1662 with the output of first iir filter 1658 convert to-1 or+1.The output of limiting device 1662 is QRAB 1646.Select time constant τ _s, make the estimation of currency of the RAB 1644 that QRAB 1646 expression transmits from AN 1604.Timeconstant _sExemplary value be four time slots.

The output of mapper 1656 also is provided for has timeconstant ₁The second one pole iir filter 1660.The output of second iir filter 1660 is FRAB 1648.Timeconstant ₁Be far longer than timeconstant _sTimeconstant ₁Exemplary value be 384 time slots.

The output of second iir filter 1660 does not offer limiting device.So as mentioned above, FRAB 1648 is the real numbers in somewhere between second value of first value of representing the RAB 1644 that does in sector 1432 and the RAB 1644 of expression 1432 free time of sector.

Figure 17 shows the exemplary method 1700 of distributing 1238a for the current power of determining the stream 1216 on the AT 1206.The step 1702 of method 1700 relates to the value of determining with stream 1216 QRAB that are associated 1546.In step 1704, determine whether QRAB 1546 equals busy value (that is expression sector 1432 present busy values).If QRAB 1546 equals busy value, then in step 1706, reduce current power and distribute 1238a, namely distribute 1238a less than the current power distribution 1238a at the stream 1216 of moment n-1 in the current power of the stream 1216 of moment n.Can use the downslope function 1552 for 1216 definition of this stream to calculate the magnitude that reduces.

If QRAB 1546 equals free value or is not equal to busy value, then in step 1708, increase current power and distribute 1238a, namely the current power of the stream 1216 during the current power of the stream 1216 during the current time interval distributes 1238a greater than the nearest time interval is distributed 1238a.Can use the upslope function 1550 for 1216 definition of this stream to calculate the magnitude of increase.

Upslope function 1550 and downslope function 1552 are functions that current power is distributed 1238a, and may be different potentially to each stream 1516 (can be downloaded by AN 1404).Here it is, and how each stream obtains the QOS difference with autonomous distribution.Similarly, the value of ramp function can change with FRAB 1548, and the behavioral characteristics on expression slope can change with load, and this allows to converge to more quickly the fixing point that is lower than the less condition of load.

Under the situation that increases current power distribution 1238a, the magnitude of increase can be expressed as:

ΔT2PInflow _i，n＝

(6)

+1×T2PUp _i(10×log ₁₀(T2PInflow _i，n-1)+PilotStrength _i(PilotStrength _n，s)，FRAB _n)

Under the situation that reduces current power distribution 1238a, the magnitude that reduces can be expressed as:

ΔT2PInflow _i，n＝

(7)

-1×T2PDn _i(10×log ₁₀(T2PInflow _i，n-1)+PilotStrength _i(PilotStrength _n，s)，FRAB _n)

T2PUp _iIt is the upslope function 1550 of stream i.T2PDn _iIt is the downslope function 1552 of stream i.PilotStrength _{N, s}Be serving sector pilot power measuring other sector pilot power.In certain embodiments, it is serving sector FL pilot power and the ratio of other sector pilot power.PilotStrength _iBe pilot frequency intensity to be mapped to the function of the side-play amount in the T2P independent variable of ramp function, and can download from AN.In this way, can be based on using variable PilotStrength _{N, s}The priority at AT upper reaches is adjusted in the position of AT in network of measuring.

Current power distributes 1238a to be expressed as:

${T2\mathrm{PInflow}}_{i,n}=(1-\left(\frac{1}{T2\mathrm{PFilterTC}}\right))\×{T2\mathrm{PInflow}}_{i,n-1}+$

$\left(\frac{1}{T2\mathrm{PFilterTC}}\right)\×{T2\mathrm{POutflow}}_{i,n-1}+{\mathrm{\ΔT}2\mathrm{PInflow}}_{i,n}---\left(8\right)$

Can find out that from top equation when the level of reaching capacity 1135 and slope were set to zero, current power was distributed the 1238a exponential damping.The value that this allows the current power in maintenance bursts of traffic source to distribute 1238a, its duration should be longer than the typical class interval time.

In certain embodiments, to each sector in AT 1206 efficient sets, estimate QRAB value 1546.If the QRAB of any sector in the AT efficient set hurries, then reduce current power and distribute 1238a.If the QRAB of all sectors in the AT efficient set is idle, then increases current power and distribute 1238a.In alternate embodiments, can define another parameter QRABps.For QRABps, consider the pilot frequency intensity of measuring.(pilot frequency intensity is serving sector pilot power measuring other sector pilot power.In certain embodiments, it is serving sector FL pilot power and the ratio of other sector pilot power.) if the ARQB of sector s is busy, then QRABps is set to busy value, and wherein sector s satisfies one or more in the following condition: (1) sector s is the forward link service sector that accesses terminal; (2) from the DRCLock position losing lock (out-of-lock) of sector s, and the PilotStrength of sector s _{N, s}Greater than threshold value; (3) the DRCLock position from sector s locks (in-lock), and the PilotStrength of sector _{N, s}Greater than threshold value.Otherwise QRABps is set to free value.In determining the embodiment of QRABps, as QRABps when be idle, can increase current power and distribute 1238a, and when QRABps when hurrying, can reduce current power distribution 1238a.

Figure 18 shows send a request message 1866 AT 1806 of scheduler 1840 on the AN 1804.Figure 18 also shows the scheduler 1840 that sends grant message 1842 to AT 1806.In certain embodiments, scheduler 1840 can send grant message 1842 to AT 1806 on one's own initiative.Alternately, scheduler 1840 can send grant message 1842 to AT 1806 in response to the request message 1866 that is sent by AT 1806.Request message 1866 comprises AT power peak deposit (headroom) information and each flow queue length information.

Figure 19 shows and can be retained on the AT 1906 so that AT 1906 can determine when send a request message 1866 the information to AN 1804.As shown in the figure, AT 1906 can be associated with the request ratio.Request ratio 1968 is illustrated on the reverse traffic channel 208 ratio of the data that send on the request message size 1866 that sends and the reverse traffic channel 208.In certain embodiments, when request ratio 1968 is reduced to when being lower than certain threshold value, then AT 1906 sends a request message 1866 to scheduler 1840.

AT 1906 can also 1970 be associated at interval with request time.Request time 1970 expressions at interval is sent to the time period that scheduler 1840 begins from a last request message 1866.In certain embodiments, when request time 1970 is increased to when being higher than certain threshold value at interval, then AT1906 sends a request message 1866 to scheduler 1840.Two kinds of methods of triggering request 1866 also can be used (that is, can send a request message 1866 when arbitrary method causes sending message) together.

Figure 20 shows in the scheduler 2040 of AN 2004 operations and the exemplary interaction between the AT 2006 in the sector 2032.As shown in figure 20, scheduler program 2040 can be determined the current power distribution permission 1374 of the subclass 2072 of the AT 2006 in the sector 2032.Can determine independent current power distribution permission 1374 to each AT 2006.When the AT 2006 in the subclass 2072 comprises more than a stream 1216 the time, scheduler 2040 can be determined independent current power in the stream 1216 on each AT 2006 some or all and distribute permission 1374.The scheduler 2040 periodically AT in the subclass 2,072 2006 sends grant messages 2042.For the AT 2006 in the sector 2032 of part that is not subclass 2072, scheduler 2040 is not determined current power for it and is distributed permission 1374.On the contrary, sector 2032 interior all the other AT 2006 independently determine their current power distribution 1038a.Grant message 2042 can comprise that current power distributes some or all the retention time in the permission 1374.Current power distributes the retention time of permission 1374 to represent that AT 2006 distributes 1238a to remain on current power the current power of respective streams 1216 and distributes time span on the specified level of permission 1374.

According to method shown in Figure 20, scheduler 2040 is not all capacity that are designed to satisfy in the sector 2032.On the contrary, scheduler 2040 is that the AT 2006 in the subclass 2072 determines current power distribution 1038a, then, uses all the other sector 2032 capacity effectively by all the other AT 2006, and is not subjected to the interference from scheduler 2040.Subclass 2072 can change in time, and can change with each grant message 2042.Equally, send the decision of grant messages 2042 to certain subclass 2072 of AT 2006, can be triggered by an external event arbitrarily, comprise detecting some streams that do not satisfy certain qos requirement.

Figure 21 shows in the scheduler 2140 of AN 2104 operations and another the exemplary interaction between the AT 2106.In certain embodiments, if allow AT 2106 to determine that the current power of the stream 2116 on the AT2106 distributes 2138a, what then current power distributed that among the 2138a each will be along with the time converges to steady-state value in the past.For example, if an AT 2106 enters unloaded sector 1232, and have the stream 2116 that the data that will transmit are arranged, the current power of this stream 2116 distributes 2138a to increase, till stream 2116 takies whole sector 2132 throughputs.But it needs some times.

A kind of alternative method is that scheduler 2140 is determined the estimation of the steady-state value that the stream among each AT 2106 reaches the most at last.Then, scheduler 2140 can send grant message 2142 to all AT 2106.In grant message 2142, stream 2116 current power distributes permission 2174 to be set to equal the estimation of the steady-state value of this stream 2116 of being determined by scheduler 2140.When receiving grant message 2142, the stable state that the current power of the stream 2116 on AT 2106 AT 2106 distributes 2138a to be set to equal in the grant message 2142 estimates 2174.After this finishes, can allow any variation in the AT 2106 tracking system conditions subsequently, and independently determine the current power distribution 2138a of stream 2116, and not need the further interference from scheduler 2140.

Figure 22 shows another embodiment that scheduler 2240 from the AN 2204 is transmitted into the grant message 2242 of AT 2206.As above, grant message 2242 comprises that the current power in one or more streams 2216 on the AT 2206 distributes permission 2274.In addition, grant message comprises that current power distributes some or all the duration section 2276 in the permission 2274.

Grant message 2242 comprises that also some or all streams integral power in 2216 on the AT 2206 distribute permission 2278.When receiving grant message 2242, the integral power that the integral power of the stream 2216 on AT 2206 AT2206 distributes 2238b to be set to equal respective streams 2216 in the grant message 2242 is distributed permission 2278.

Figure 23 shows power and distributes 2380, and in certain embodiments, it can be stored on the AT2306.The power levels 422 that power distribution 2332 can be used for determining payload size 420 and is transmitted into the grouping of AN 204 by AT 2306.

Power distribution 2380 comprises a plurality of payload sizes 2320.Being included in the payload size 2320 in the power distribution 2380, is the possible payload size 2320 by the grouping 524 of AT 2306 emissions.

Each payload size 2320 that power distributes in 2380 is associated with the power level 2322 of each possible transmission mode.In the exemplary embodiment, each payload size 2320 is associated with high power capacity power level 2322a and low latency power level 2322b.High power capacity power level 2322a is the power level with high power capacity grouping 524a of corresponding payload size 2320.Low latency power level 2322b is the power level with low latency grouping 524b of corresponding payload size 2320.

Figure 24 shows a plurality of transmission conditions 2482 that can be stored on the AT 2406.In certain embodiments, the selection of the payload size 420 of 2482 pairs of groupings 524 of transmission conditions and power level 422 is influential.

Transmission conditions 2482 comprise distributes power condition 2484.Distribute power condition 2484 to be usually directed to guarantee that AT 2406 does not use than its assigned power more power.More specifically, distribute power condition 2484 to be, the power level 422 of grouping 524 is no more than total available horsepower 1034 of AT 2406.The different exemplary method that is used for total available horsepower 1034 of definite AT 2406 has been discussed above.

Transmission conditions 2482 also comprise full power condition 2486.Full power condition 2486 is that the power level 422 of grouping 524 is no more than the maximum power level that is assigned to AT 2406.

Transmission conditions 2482 also comprise data qualification 2488.Data qualification 2488 is usually directed to guarantee to consider that total available horsepower 1034 of AT 2406 and AT 2406 can be used for data quantity transmitted at present that the payload size 420 of grouping 524 is not too big.More specifically, data qualification 2488 is not have payload size 2320 in the power distribution 2380, power distribution 2380 is corresponding to the low power level 2322 of the transmission mode of grouping 524, and can carry one less in following: (1) can be used for the data volume of total available horsepower 1034 correspondences of data quantity transmitted and (2) AT 2406 at present.

Provided the mathematical description of transmission conditions 2482 below.Distribute power condition 2484 to be expressed as:

TxT2PNominal _PS，TM≤∑ _i∈F(PotentialT2POutflow _i，TM) (9)

TxT2PNominal _{PS, TM}It is the power level 2322 of payload size PS and transmission mode TM.

F is that adfluxion closes 418.

Full power condition 2486 can be expressed as:

max(TxT2P Pr eTransition _PS，TM，TxT2PPostTransition _PS，TM)≤TxT2Pmax (10)

In certain embodiments, between the transmission period of grouping 524, sometime, allow the power level 422 of grouping 524 from first value transform to the second value.In such an embodiment, the power level 2322 of appointment comprises the preceding value of conversion and conversion back value in the power distribution 2380.

TxT2PPreTransition _{PS, TM}It is the preceding value of conversion of payload size PS and transmission mode.

TxT2PPostTransition _{PS, TM}Be to be worth after the conversion of payload size PS and transmission mode TM.TxT2Pmax is the maximum power level for AT 206 definition, and can be the function of the measured PilotStrength of AT 206.PilotStrength is serving sector pilot power measuring other sector pilot power.In certain embodiments, it is serving sector FL pilot power and the ratio of other sector pilot power.It can be used for the control AT 206 autonomous upper and lower inclinations of carrying out.It can also be used for control TxT2Pmax, makes the AT 206 that (for example, is positioned at the edge of a plurality of sectors) in poor geometry can limit their maximum transmission power, to avoid producing undesirable interference with other sector.

In certain embodiments, data qualification 2488 is not have payload size 2320 in the power distribution 2380, and power distribution 2380 is corresponding to the low power level 2322 of the transmission mode of grouping 524, and the size of the payload that can carry is provided by following formula:

∑ _i∈Fmin(d _i，n，T2PConversionFactor _TM×PotentialT2POutflow _i，TM) (11)

In equation 11, d _{I, n}Be from the data volume that is included in the stream i in the son grouping of launching during the subframe n.Expression formula T2PConversionFactor _TM* PotentialT2POutflow _{I, TM}Be the launched data of stream i, i.e. total available horsepower 1034 corresponding data volumes of AT 2406.

T2PConversionFactor _TMIt is the transformation factor that is transformed into data level for total available horsepower 1238 that will flow i.

Figure 25 shows AT 206 can carry out to determine the payload size 420 of grouping 524 and a kind of exemplary method 2500 of power level 422.Step 2502 relates to from power distribution 2380 selects payload size 2320.Step 2504 relates to the power level 2322 that identification is associated with the payload size 2320 that is the transmission mode selection of grouping 524.For example, if divide into groups 524 will transmit with the high power capacity pattern, then step 2504 relates to the high power capacity power level 2322a that identification is associated with selected payload size 2320.On the contrary, if grouping will be with the emission of low latency pattern, then step 2504 relates to the low latency power level 2322b that identification is associated with selected payload size 2320.

524 are launched with selected payload size 2320 and corresponding power level 2322 if divide into groups, and step 2506 relates to determines whether transmission conditions 2482 are met.If determine that in step 2506 transmission conditions are met, then in step 2508, selected payload size 2320 and corresponding power level 2322 are sent to physical layer 312.

If determine that in step 2506 transmission conditions 2482 are not met, then in step 2510, from power distribution 2380, select different payload sizes 2320.Then, method 2500 turns back to step 2504, and proceeds as described above.

The design principle that multi-flow type distributes is the available horsepower sum of each stream during total available horsepower equals to access terminal.No matter this method is for the situation that exceeds transmitting power by hardware constraints or by itself the operation of accessing terminal that TxT2Pmax restriction causes operational excellence all.When transmitting power was restricted, in accessing terminal, the further arbitration of stream power division was necessary.As mentioned above, under the situation of inactivity restriction, the gu/gd demand function determines that by the normal function that RAB and stream tilt the current power of each stream is distributed.Now when AT power was restricted, a kind of method that flow distribution is set was to regard the AT Power Limitation as strictness and be similar to the sector Power Limitation.Usually, the sector has the maximal received power criterion, and this criterion is used to arrange RAB, then produces the power division of each stream.This idea is, when the AT power limited, if the Power Limitation of AT is actually the respective limits of the power that the sector receives, then each stream among this AT is set to it with the power division that receives.By at the virtual RAB of this AT internal operation, perhaps pass through other equivalent algorithm, this stream power division can directly be determined from the gu/gd demand function.In this way, inner AT (intra-AT) flow priority is retained, and consistent with middle AT (inter-AT) flow priority.In addition, the information outside existing gu and the gd function is unnecessary.

Now provide the summary of the different characteristic among some or all embodiment described herein.This system considers average resource distributes the decoupling of (T2PInflow) and this resource how to be used for branch set of dispense (comprising peak rate and the control of peak pulse duration).

In all situations, the branch set of dispense can remain autonomous.Distribute for average resource, the distribution of scheduling or autonomous distribution all are feasible.This allows the distribution of scheduling and autonomous distribution to realize seamless combination, because the grouping assigning process all plays same function in both cases, and average resource can often be upgraded or be not undesirably to obtain upgrading.

The control of retention time allows to distribute timing accurately to control with minimum signaling consumption to resource in the grant message.

The control of BucketLevel is convenient to resource to the quick injection of stream in the grant message, and does not influence its temporal mean allocation.The resource that this is a kind of ' using ' is in the past injected.

Scheduler can carry out ' fixing point ' to be estimated, perhaps the correct resource of each stream is distributed, and then these values is downloaded to each stream.This has shortened the time of network near its correct distribution (' slightly ' distribution), and autonomous mode is finished final distribution (' essence ' distributes) rapidly afterwards.

Scheduler can send permission to the subclass of stream, and allows other operation independently to distribute.In this way, can to some mainly stream carry out resource and guarantee, like this, all the other amounts of flowing to end are ' being full of ' all the other capacity automatically suitably.

Scheduler can be realized ' guiding ' (' shepherding ') function, wherein has only the transmission that grant message just takes place when stream does not satisfy qos requirement.Otherwise stream is allowed to independently to arrange its oneself power division.In this way, can carry out the QoS assurance with signaling and the expense of minimum.Attention is in order to reach the QoS target of stream, and boot dispatcher can be permitted the power division of the fixing point solution that is different from autonomous distribution.

AN can specify the design of each stream of ramp function (going up or the downslope function).By selecting these ramp functions suitably, only merely use autonomous operation, only use the 1-bit of control information in each sector, we can accurately specify the average resource distribution of each stream arbitrarily.

Very fast regularly (each time slot upgrade and in each AT short-time constant filtering) of realizing in the QRAB design, be convenient to the power division of each stream is controlled very closely, and make whole sector capacity reach maximum, keep stability and the area of coverage simultaneously.

The peak power control of each stream is allowed to the function as average power allocation and sector load (FRAB).This is convenient to carry out compromise selection for timeliness and the stability of the influential bursts of traffic of being loaded in whole sector.

By using BurstDurationFactor, allow each stream was controlled in the maximum duration that peak power speed is transmitted.In conjunction with peak rate control, this is convenient to sector stability and peak load are controlled, and does not need autonomous flow distribution is carried out centralized coordination, and is convenient to needs are adjusted to concrete Source Type.

To the distribution in burst source be by storage tank mechanism and T2PInflow continue handle admirably, it considers when maintenance is controlled average power average power allocation to be mapped to the burst source.The T2PInflow filter time constant control duration has allowed sporadic grouping to arrive at duration, and T2PInflow decays to smallest allocation outside the duration and surpass.

T2PInflow allows in the less sector of load higher inclination dynamic characteristic is arranged in the inclination correlation on the FRAB, and does not influence final average power allocation.In this way, when sector load more after a little while, can carry out active tilt, and keep good stability on the high load capacity level by reducing the inclination initiative.

T2PInflow is by autonomous operation, based on flow priority, data demand, and available horsepower, automatically tune to the correct distribution to constant current.When stream exceeds the branch timing, BucketLevel reaches the BucketLevelSat value, and tilting stops, and the T2PInflow value will decay to BucketLevel downwards less than the level of BucketLevelSat.The suitable distribution of Here it is T2PInflow.

Except the QoS difference based on each stream in the autonomous distribution of last/downslope function design, can also by the inclination correlation on QRAB or QRABps and the PilotStrength, control the stream power division based on channel condition.In this way, failing to be convened for lack of a quorum in the bad channel condition obtains low the distribution, reduces the total capacity of disturbing and improving system, maybe can obtain the whole distribution irrelevant with channel condition, and it is the cost performance that is consistent with the power system capacity.This allows to carry out the compromise control of justice/overall interests.

As much as possible, the middle AT of each stream and inner AT power division as far as possible with location independent.This is illustrated in same AT upward or on other AT which is arranged other stream, and all it doesn't matter, and total sector load is only depended in the distribution of stream.Some facts that in fact exist have limited the degree that this target can be finished, particularly maximum AT transmitting power and about merging the problem of HiCap and LoLat stream.

With this method as one man, be condition with the transmission power limit of AT, total available horsepower of distributing to the AT grouping is the available horsepower sum of each stream among the AT.

No matter use what rule to determine from the data allocations that is included in each stream in the branch set of dispense, we extract to keep the accurate Calculation of use in the source of convection current according to bucket.In this way, guarantee the fairness of the intermediate flow of any data allocations rule.

When the power of AT is restricted, and can not adapt to the available gross power of its all streams the time, use the power from each stream that is suitable for the inner available less power of AT.That is to say, keep correct priority between the stream of AT inside is mutual, just share a sector (the AT Power Limitation is similar to the Power Limitation of sector generally) with those AT and this maximum power level as them.All the other power of not used up by the AT of power limited in the sector then can be as usual be used for other stream of sector.

When the enough height of use summation of the potential data of high power capacity among the AT made great power difference between nonjoinder will cause dividing into groups, high capacity flow ca can be integrated in the low latency transmission.This has kept the smoothness of the transmitting power of suitable self-interference system.When concrete high capacity flow has when postpone requiring to make that it can not wait for all low latencies stream emissions among the same AT, high capacity flow can merge in the low latency transmission, after then reaching the threshold value of potential data use, stream can merge to its data in the low latency transmission.Like this, when flowing sharing A T with the low latency that continues, can satisfy the delay requirement of high capacity flow.When sector load seldom, it is inessential that high capacity flow is used as the loss in efficiency that low latency stream transmits, and therefore can allow always in conjunction with the time, high capacity flow can merge in the low latency transmission.

When the big young pathbreaker of grouping of high power capacity pattern is at least during the PayloadThresh size, even without effective low latency stream, one group of high capacity flow can transmit in low standby mode.This allows high power capacity schema stream to reach high-throughput when their power division is enough high, because the high-throughput of AT occurs in largest packet size and low latency transmission mode.In other words, the peak rate of high power capacity transmission is more much lower than the peak rate of low latency transmission, therefore when to reach high-throughput be suitable, allows the high power capacity schema stream to use the low latency transmission at it.

Each stream has the T2Pmax parameter, and its maximum power of this restriction on the parameters is distributed.Perhaps, also need restraint total transmitting power of AT depends on its position (for example, when the border two sectors, AT produces also influence stability of more interference) in network.Parameter TxT2Pmax can be designed as the function of PilotStrength, and the maximum transmission power of restriction AT.

The functional block diagram of Figure 26 shows the embodiment of AT 2606.AT 2606 comprises processor 2602, the operation of its control AT 2606.Processor 2606 can also be called CPU.Memory 2604, it can both comprise read-only memory (ROM), comprised random-access memory (ram) again, offered processor 2602 instruction and datas.The part of memory 2604 can also comprise nonvolatile RAM (NVRAM).

Can be at the AT 2606 as implementing in the cellular Wireless Telecom Equipment, can also comprise housing 2607, this housing holds reflector 2608 and receiver 2610, to allow data the transmitting and receiving between AT 2606 and distant station (as AN 204) as voice communication.Reflector 2608 and receiver 2610 can be combined as transceiver 2612.Antenna 2614 is attached on the housing 2607, and is electrically connected to transceiver 2612.Can also use other antenna (not shown).The operation of reflector 2608, receiver 2610 and antenna 2614 is well known in the art, does not need to be described in this article.

AT 2606 also comprise for detection of with the signal detector 2616 that quantizes the signal level that transceiver 2612 receives.Signal that signal detector 2616 detects is as gross energy, pilot energy, the power spectral density of each pseudo noise (PN) chip and other signal of knowing altogether in the art.

The state converter 2626 of AT 2606 is controlled the state of Wireless Telecom Equipment based on current state with by transceiver 2612 receptions and by signal detector 2616 detected other signals.Wireless Telecom Equipment can be operated under any one state in many states.

AT 2606 also comprises system's determiner 2628, and it is used for the control Wireless Telecom Equipment and when it determines that current service provides system not meet the demands, determines which service provider system Wireless Telecom Equipment should forward to.

The different assemblies of AT 2606 link together by bus system 2630, and this bus system can comprise function bus, control signal bus, and also have status signal bus in addition except data/address bus.But, for for simplicity, in Figure 26, show various bus with bus system 2630.AT 2606 can also be included in the digital signal processor (DSP) 2609 that uses in the processing signals.This area the professional technique skilled person will understand, and the AT 2606 shown in Fig. 6 is functional block diagrams, rather than the inventory of concrete assembly.

This area the professional technique skilled person will understand, and can represent information and signal with in many different process and the technology any one.For example, above-described data, instruction, order, information, signal, bit, the symbol that may mention in the whole text, and chip can be represented with voltage, electric current, electromagnetic wave, magnetic field or particle, light field or particle or any their assembly.

Those skilled in the art will further understand, in conjunction with the described different illustrative logical blocks of embodiment disclosed herein, module, circuit, and algorithm steps, can realize with electronic hardware, computer software or the assembly of the two.For the interchangeability of hardware and software clearly is described, according to the functional of them different example components, program block, module, circuit have been described in general manner above, and step.This functional still be that software is implemented as hardware, depend on the design constraint that is subjected on application-specific and the whole system.Skilled professional and technical personnel can implement described function with distinct methods for each application-specific, but this implementation decision should not be considered to cause departing from the scope of the present invention.

Different illustrative logical blocks, module in conjunction with embodiment description disclosed herein, and circuit, can implement or carry out with general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete nextport hardware component NextPort or their combination in any body.General processor can be microprocessor, but alternately, processor can be processor, controller, microcontroller or the state machine of any conventional.Processor can also be embodied as the assembly of computing equipment, and for example, DSP and microprocessor, a plurality of microprocessor, one or more microprocessor are in conjunction with DSP core or the assembly of other this structure arbitrarily.

In the software module or the assembly of the two that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can be embodied directly in hardware, carried out by processor.Software module can be arranged in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, removable hard disk, CD-ROM or the storage medium of any other form of knowing altogether in the art.Exemplary storage medium is connected to processor, makes processor to write information from read information with to storage medium.Alternately, storage medium can be integrated on the processor.Processor and storage medium can be arranged in ASIC.ASIC can be arranged in user terminal.Alternately, processor and storage medium can be used as discrete assembly and are arranged in user terminal.

The previous description to disclosed embodiment that provides makes the skilled professional and technical personnel in any this area can both make or use the present invention.Difference to these embodiment is revised, and will be apparent for the skilled professional and technical personnel in this area, and the General Principle of definition herein can be applicable to other embodiment and do not break away from the spirit and scope of the present invention.Like this, the embodiment shown in the present invention is not limited to herein, but consistent with the most wide scope of principle disclosed herein and novel features.

Claims (6)

1. method that transmits grouping, it comprises:

A) from distributing, power selects the payload size;

B) identification and the power level that is associated for the described payload size of described transmission packets model selection;

C) if described grouping is transmitted with selected payload size and described power level, determine then whether transmission conditions are met;

D) if described transmission conditions are met, then described payload size and described power level are sent to physical layer; With

E) if described transmission conditions are not met, then select different payload sizes and turn back to step b),

Wherein, described transmission conditions comprise the distribution power condition, and by described distribution power condition, the power level of described grouping is no more than total available horsepower of described grouping.

2. the method for transmission as claimed in claim 1 grouping, wherein, described transmission mode comprises high power capacity transmission mode and low latency transmission mode.

3. the method for transmission as claimed in claim 1 grouping, wherein, described transmission conditions comprise data qualification, described data qualification is not have the payload size during power distributes, and can carry one less in following: (1) can be used for the data volume of data quantity transmitted and (2) total available horsepower correspondence at present.

4. a device that is used for transmitting grouping comprises

A) be used for from the device of power distribution selection payload size;

B) for the device of identification with the power level that is associated for the described payload size of described transmission packets model selection;

C) if be used for when described grouping is transmitted with selected payload size and described power level then the device whether definite transmission conditions are met;

D) if be used for when described transmission conditions are met then described payload size and described power level be sent to the device of physical layer; With

E) if be used for when described transmission conditions are not met then select different payload sizes and continue the device of identification and the power level that is associated for the described payload size of described transmission packets model selection;

Wherein, described transmission conditions comprise the distribution power condition, and by described distribution power condition, the power level of described grouping is no more than total available horsepower of described grouping.

5. as claimed in claim 4 for the device that transmits grouping, wherein, described transmission mode comprises high power capacity transmission mode and low latency transmission mode.

6. as claimed in claim 4 for the device that transmits grouping, wherein, described transmission conditions comprise data qualification, described data qualification is not have the payload size during power distributes, and can carry one less in following: (1) can be used for the data volume of data quantity transmitted and (2) total available horsepower correspondence at present.

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