CN101594666B

CN101594666B - Selection method and device of access modes as well as sending method and device of uplink data

Info

Publication number: CN101594666B
Application number: CN2008101140297A
Authority: CN
Inventors: 李晓卡; 张英; 白杰
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2008-05-30
Filing date: 2008-05-30
Publication date: 2012-02-15
Anticipated expiration: 2028-05-30
Also published as: CN101594666A

Abstract

The invention discloses a selection method of access modes, comprising the step of starting the selection of access modes under Idle or CELL-FACH mode when the scheduled probability of a mobile terminal is comparatively low. The invention also discloses a sending method of uplink data, comprising the following steps: configurating related parameters sent by uplink data for a base station and the mobile terminal, starting the selection of access modes under Idle or CELL-FACH mode when the scheduled probability of the mobile terminal is comparatively low; while selecting PRACH resources to bear data to be sent, inserting the data to be sent into TB of E-DCH and sending the data to be sent to the network side through the PRACH resources. The invention also discloses devices for realizing the above two methods. The PRACH is selected to bear the uplink data under the condition of comparatively few uplink data, thus saving the expenditure of the uplink channel.

Description

Access way system of selection and device, method for transmitting uplink data and device

Technical field

The present invention relates to up access way selection and data transmission method for uplink and device, relate to access way system of selection and device, method for transmitting uplink data and the device of portable terminal under free time or the cell forward access channel pattern or rather.

Background technology

In the tradition GSM; Portable terminal is in free time (Idle) pattern or cell forward access channel (CELL_FACH) pattern following time, uply sends upstream data through RACH (RACH, Random AccessChannel); Descending through forward access channel (FACH; Forward AccessChannel) receive the downlink data that network side sends, wherein, RACH channel and FACH channel are respectively up Common transport channel and downlink common transport channel.The data of RACH transmission channel are through Physical Random Access Channel (PRACH; Physical Random Access Channel) carries; The FACH transport channel data is carried through Secondary Common Control Physical Channel (S-CCPCH, Secondary Common ControlPhysical Channel).Transmission channel is the logical concept that is used for describing the data flow of certain particular transmission format characteristic; The parameter of transformat characteristic has transmission block size (TBS; Transport Block Size), Transmission Time Interval (TTI, Transmission Time Interval), transformat indication (TFI, TransportFormat Indicator) and transformat combination indication (TFCI; Transport Format CombinationIndicator) etc.; Wherein, Transmission Time Interval TTI is used for stipulating that the packet of corresponding TBS definition passes through the time that the data after physical channel is encoded continue, under the Typical Disposition situation; The TTI of RACH transmission channel is configured to 10ms, the interior data block that only allows to transmit a TBS=170 bit of Transmission Time Interval; Transmission block need be accomplished transmission through after the chnnel coding of physical layer in a TTI.Transformat indication TFI is used for representing certain transmission block size of certain transmission channel; The data of transmission channel are finally sent through physical channel; Here it is, and transmission channel is mapped to the process of physical channel; In the present system, allow one or more different transmission channel to be mapped on the identical physical channel, the transformat of one or more transmission channel indication TFI is mapped as transformat combination indication TFCI; TFCI is carried on the physical channel, in order to receiving terminal physical channel data is decoded.The method for using of TFI and TFCI is exemplified below: the situation that is mapped to DPCH DPCH for dedicated transmission channel (Dedicated Transport Channel); Definition of T FI=k1 representes the data block size of TBS=n1 on the DCH1 channel; Definition of T FI=k2 representes the data block size of TBS=n2 on the DCH2 channel; Definition of T FCI=m1 representes only to have carried on the corresponding physical channel DPCH data block of a TBS=n1 of DCH1 transmission channel; Definition of T FCI=m2 representes only to carry on the corresponding physical channel DPCH data block of a TBS=n2 of DCH2 transmission channel, and definition of T FCI=m3 has represented respectively to carry on the corresponding physical channel DPCH data block of a DCH1 transmission channel and DCH2 transmission channel.Transmitting terminal carries out chnnel coding according to the transmission block size of transmission channel, accomplish after the chnnel coding corresponding TFCI information-bearing on physical channel, receiving terminal according to TFCI with the transmission block decoding of transmission channel and recover.The property parameters of transmission channel such as transmission block size TBS, transformat indication TFI and TFCI dispose respectively to portable terminal and base station through high-level signaling.Especially; For the RACH transmission channel; Transmission block size TBS in each TTI and TFI and with the corresponding relation of TFCI by radio network controller (RNC; Radio Network controller) broadcast to portable terminal through the system message of eating dishes without rice or wine, simultaneously radio network controller is notified to the base station through (Iub, Interface Between RNC and Node B) interface of itself and base station.

(Time Division Duplex, TDD) system is meant the combination of the physical channel resources of being made up of the resource units of the one or more code channels on one or more time slot on the aerial wave point to physical channel for time division duplex.In addition,, only allow to send a transmission block in present TTI of agreement regulation RACH transmission channel, that is to say that the RACH transmission channel has only a kind of transformat, therefore on the PRACH channel, need not to carry TFCI information for tdd mode.

The process of sending a upstream data through the RACH channel is following: when portable terminal has upstream data to send through the RACH transmission channel; Trigger and initiate the physical accidental access procedure; So-called physical accidental access procedure is meant that portable terminal passes through ascending pilot channel (UPPCH; Uplink Pilot Channel) send uplink synchronous code SYNC_UL (have 8 SYNC_UL sign indicating numbers in the sub-district at most, each portable terminal is therefrom selected at random) to the base station, received power and the receiving position according to the SYNC_UL sign indicating number received behind the SYNC_UL sign indicating number in the base station; Through physical access channel (FPACH; Fast Physical AccessChannel) will adjust synchronously with the power adjustment information and send to portable terminal, wherein, adjustment information and power adjustment information are used to be provided with the transmission timing and the transmitted power of PRACH channel synchronously.After portable terminal correctly receives the FPACH channel; In the resource moment of PRACH channel; High level data is packaged into the data format of RACH channel according to transmission block size TBS and Transmission Time Interval TTI parameter; Portable terminal is carried out chnnel coding to the data of RACH transmission channel and is added cyclic redundancy error detecting code (CRC, CyclicRedundancy Check) back and sends to the base station through the PRACH channel.The base station is after portable terminal sends the FPACH channel, and the base station receives the PRACH data that the user sends in the time of reception of PRACH, and the PRACH data are decoded.

Evolution along with system; In order to improve the peak rate of upstream data; Introduced high speed uplink packet access (HSUPA, High Speed Uplink Packet Access) technology, the core concept of HSUPA technology is based on multiple users share and between the multi-user, dispatches the mechanism of shared resource.The course of work is following: portable terminal has data need pass through to strengthen dedicated channel (E-DCH; When Enhanced Dedicated TransportChannel) sending; Trigger earlier and strengthen the physics random access procedure; It is similar to strengthen physics random access procedure and common physical accidental access procedure; Portable terminal at first sends uplink synchronous code SYNC_UL to the base station, receives through the FPACH channel then to be used for the feedback message that enhanced random inserts ascending control channel (E-RUCCH, E-DCHRandom Access Uplink Control Channel) adjustment synchronously and power adjustment; After the terminal receives the FPACH channel feedback, send the E-RUCCH channel data to the base station constantly in the E-RUCCH resource according to timing relationship.In a sub-district 8 SYNC_UL sign indicating numbers are arranged at most in the legacy system, after the HSUPA technology is introduced, maximum 8 SYNC-UL sign indicating numbers in the sub-district are divided into groups, one group is used for common physical accidental access, and one group is used to strengthen physical accidental and inserts.In HSUPA, the physical channel resources that the E-RUCCH channel is identical with the PRACH channel multiplexing, what the base station confirmed that the subsequent movement terminal sends according to different SYNC_UL sign indicating numbers is PRACH data or E-RUCCH data.Carry uplink scheduling information through enhanced random access ascending control channel E-RUCCH again behind the portable terminal completion enhancing physics random access procedure and send to the base station; Comprise the priority indication of the data volume and the data to be sent of up data to be sent in the uplink scheduling information; Dispatch portable terminal according to portable terminal data volume to be sent and priority indication the base station; Through strengthening absolute grant channel (E-AGCH; E-DCH Absolute Grant Channel) will dispatch enhancing physics up channel (E-PUCH to this portable terminal; E-DCH Physical UplinkChannel) physical channel resources and power resource send to portable terminal, and portable terminal sends to the base station through the E-PUCH resource of distributing on the E-AGCH channel with up E-DCH data.The E-DCH channel is to carry the transmission of uplink data channel in the HSUPA technology; The characteristic of E-DCH transmission channel mainly is presented as: the transmission block size variation scope of carrying on the E-DCH transmission channel is bigger, the transmission block that the maximum transmission block that can transmit carries on the RACH channel in TTI.In addition, what be different from the RACH transmission channel is that the E-DCH transmission channel is also supported the re-transmission to the transmission upstream data.The control channel of E-DCH is used for carrying the E-DCH necessary control information of decoding, and particularly, comprises transmission block size indication information TBS index, process indication information and re-transmission sequence number indication RSN information etc. in the E-UCCH channel; Wherein the function class of transmission block size indication information TBS index is similar to the function of the TFCI that carries on the conventional channel.The information of E-UCCH channel bearing is placed on the E-PUCH physical channel, decodes to up E-PUCH channel according to E-UCCH information in the base station, and data carried by data on the E-DCH transmission channel is recovered out.Positive feedback or the negative feedback ACK/NACK information of E-PUCH channel data will be decoded through strengthening mixed automatic re-transmission indicating channel (E-HICH in the base station; E-DCH Hybrid ARQ Indicator Channel) sends to portable terminal, initiate to retransmit when the portable terminal basis receives negative feedback NACK.

Send the process of upstream data through the E-DCH channel; Be different from the process of sending upstream data through RACH: send the process that upstream data needs extra transmission E-RUCCH and receives the E-AGCH channel through the E-DCH channel; Be equivalent in order to send upstream data through E-DCH; Need pay the expense of two E-RUCCH and E-AGCH channel resource extraly, also may bring the time delay of transmitting uplink data.And correlative study shows; Upstream data bag size under idle pulley and the CELL-FACH pattern is smaller under most of situation; When therefore sending less upstream data bag through present E-DCH transmission upstream data process, described E-RUCCH and E-AGCH control channel expense are bigger.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of access way system of selection and device, method for transmitting uplink data and device, under the less situation of volume of transmitted data, can save channel overhead.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of system of selection of access way comprises:

Under idle Idle or the cell forward access channel pattern CELL-FACH; When the probability that is scheduled at portable terminal is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or by the enhancing physics up channel E-PUCH of base station scheduling as the Data-carrying channel.

Preferably, when selecting the PRACH physical channel resources to carry data to be sent, said data are carried by the transmission block TB of ascending reinforced special channel E-DCH.

Preferably, select the PRACH physical channel resources or during by the E-PUCH of base station scheduling, with in data volume to be sent, channel quality, the control channel expense at least one as alternative condition.

Preferably,, be specially as alternative condition with data volume to be sent:

Calculate and carry current data volume to be sent, select for use E-PUCH to carry when exceeding setting threshold, select for use the PRACH physical channel resources to carry when not exceeding setting threshold by base station scheduling.

Preferably,, be specially as alternative condition with channel quality:

Portable terminal is measured at least one in Serving cell path loss, Serving cell and adjacent sub-district path loss, ascending time slot interference value, the up benchmark expectation received power value; Judge according to measurement result whether current channel quality reaches the setting requirement; Reach to set and select for use E-PUCH to carry data to be sent when requiring, do not reach to set and select for use the PRACH physical channel resources to carry data to be sent when requiring by base station scheduling.

Preferably,, be specially as alternative condition with the control channel expense:

According to data volume to be sent, calculate unit physical channel number shared when carrying respectively, with the few Bearer Channel of unit physical channel number that takies as data to be sent by the E-PUCH of base station scheduling and PRACH physical channel resources.

Preferably, the probability that said portable terminal is scheduled is lower, is specially:

Portable terminal is in the discontinuous dispatching state, or portable terminal has been that 0 information reporting is given network side with buffer memory, or portable terminal is in the uplink loss state.

A kind of method for transmitting uplink data is the relevant parameter of base station and the transmission of mobile terminal configuration upstream data, and this method comprises:

Under free time or the cell forward access channel pattern CELL-FACH; The probability that is scheduled at portable terminal hour; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or carry data by the enhancing physics up channel E-PUCH of base station scheduling; And

When selecting the PRACH physical channel resources to carry data to be sent, data to be sent are inserted among the TB of E-DCH, are sent to network side through the PRACH physical channel resources.

Preferably, this method also comprises:

Network side corresponding specific uplink synchronous code, channel format of retransmitting indication information, transmission block size indication information or agreement when carrying the E-DCH data on the PRACH physical resource parse data carried by data on the PRACH physical channel resources.

Preferably; Said relevant parameter comprises network configuration parameters and access way selection parameter; Wherein, said network configuration parameters comprises: the transmission block size TBS that the E-DCH that on the PRACH physical channel resources, sends is relevant and be the specified upstream synchronous code information of E-DCH data with the corresponding relation of transport block format indication TFCI or transport block size index, the professional delay parameter that allows, maximum retransmission N, maximum retransmit timer, in order to what sign PRACH physical channel resources was carried; Said access way selects parameter to comprise: data to be transmitted amount threshold value, Serving cell path loss threshold value, Serving cell and neighbor cell path loss threshold value, uplink interference threshold value, up benchmark expectation received power threshold value.

Preferably, portable terminal carries data to be sent according to related parameter choosing PRACH physical channel resources or by the E-PUCH of base station scheduling, selects in the parameter at least one as alternative condition with said access way.

Preferably, select the PRACH physical channel resources or carry data, be specially by the E-PUCH of base station scheduling:

Preferably, select the PRACH physical channel resources or carry data to be sent, be specially by the E-PUCH of base station scheduling:

Portable terminal is measured at least one in Serving cell path loss, Serving cell and adjacent sub-district path loss, ascending time slot interference value, the up benchmark expectation received power value; Measurement result and corresponding threshold value are compared; Judge whether current channel quality reaches the setting requirement; Reach to set and select for use E-PUCH to carry data to be sent when requiring, do not reach to set and select for use the PRACH physical channel resources to carry data to be sent when requiring by base station scheduling.

According to data volume to be sent, calculate unit physical channel number shared when carrying respectively, the bearing mode that the unit's of taking physical channel number is few as data to be sent by the E-PUCH of base station scheduling and PRACH physical channel resources.

A kind of choice device of physical channel comprises:

The dispatch state judging unit is used under free time or cell forward access channel pattern, judges whether the probability that portable terminal is scheduled is lower; And

The access way selected cell is used for when the probability that is scheduled is low, starting the selection of access way, promptly selects Physical Random Access Channel PRACH physical channel resources or carries data by the enhancing physics up channel E-PUCH of base station scheduling.

Preferably, when said access way selected cell selected the PRACH physical channel resources to carry data, said data were carried by the transmission block TB of ascending reinforced special channel E-DCH.

Preferably, said access way selected cell comprises:

The data volume computing module is used to calculate the current data volume to be sent of carrying; And

The access way determination module is used for data volume of being calculated and setting threshold are compared, and selects for use the E-PUCH by base station scheduling to carry when exceeding setting threshold, selects for use the PRACH physical channel resources to carry when not exceeding setting threshold.

Preferably, said access way selected cell comprises:

Measurement module is used for measuring at least one of Serving cell path loss, Serving cell and adjacent sub-district path loss, ascending time slot interference value, up benchmark expectation received power value; And

The access way determination module; Be used for judging according to measurement result whether current channel quality reaches the setting requirement; Reach to set and select for use E-PUCH to carry data to be sent when requiring, do not reach to set and select for use the PRACH physical channel resources to carry data to be sent when requiring by base station scheduling.

Preferably, said access way selected cell comprises:

Unit physical channel number computing module is used for according to data volume to be sent, calculates unit physical channel number shared when being carried by the E-PUCH of base station scheduling and PRACH physical channel resources respectively; And

The access way determination module is used for the access way as data to be sent that the busy channel number is few.

A kind of upstream data dispensing device comprises:

Parameter configuration unit is used to the relevant parameter that base station and mobile terminal configuration upstream data send;

The access way selected cell; When the probability of be used under free time or cell forward access channel pattern, the portable terminal quilt being dispatched continuously is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or carry data by the enhancing physics up channel E-PUCH of base station scheduling; And

Transmitting element is used for when selecting the PRACH physical channel resources to carry, data to be sent being inserted among the TB of E-DCH, is sent to network side through the PRACH physical channel resources.

Preferably, this device also comprises:

Resolution unit, the channel format of specified upstream synchronous code, re-transmission indication information, transmission block size indication information or agreement when being used for according to PRACH physical channel resources carrying E-DCH parses the data of PRACH.

Preferably, said access way selected cell comprises:

In the booster stage system; When portable terminal free time or cell forward access channel pattern CELL_FACH; Can bring the big problem of control channel expense if only use the E-PUCH mode of base station scheduling to carry upstream data, and if only use the PRACH physical channel resources to carry up E-DCH data and can bring the not high problem of overall upstream data rate.The present invention is directed to this situation,, select for use the PRACH physical channel resources to carry upstream data, saved the expense of sending upstream data satisfying under the situation that imposes a condition.

Description of drawings

Fig. 1 is the flow chart of system of selection of the access way of the embodiment of the invention;

Fig. 2 is the flow chart of the method for transmitting uplink data of the embodiment of the invention;

Fig. 3 is the composition structural representation of choice device of the access way of the embodiment of the invention;

Fig. 4 is the composition structural representation of the upstream data dispensing device of the embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.

Fig. 1 is the flow chart of system of selection of the access way of the embodiment of the invention, and as shown in Figure 1, the system of selection of access way of the present invention may further comprise the steps:

Step 101: for mobile terminal configuration is used for the relevant parameter that access way is selected.

The relevant parameter that the radio network controller of network side will dispose sends in the portable terminal process through eating dishes without rice or wine; Relevant parameter comprises: transmission block size thresholding, Serving cell path loss thresholding, Serving cell and neighbor cell path loss thresholding, uplink interference thresholding, up benchmark expectation received power thresholding, up expectation received power are with reference to parameter configuration such as thresholding, power margin information thresholdings.

Step 102: under idle Idle or the cell forward access channel pattern CELL-FACH; When the probability that is scheduled at portable terminal is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or carry data by the enhancing physics up channel E-PUCH of base station scheduling.

In the existing system; Portable terminal sends before the up E-DCH data through the E-PUCH by base station scheduling; Need through the E-RUCCH channel at dispatch request information (SI; Scheduling Information) carry up data total amount to be sent (TEBS, Total E-DCH Buffer Status) in and report the base station, dispatch according to the TEBS of terminal to report the base station.Generally speaking, as long as the base station is not given with the information reporting of TEBS=0 in the terminal, the base station continues the terminal is dispatched with regard to needs, and TEBS becomes 0 expression terminal and data to be sent sent.After the base station was given with the information reporting of TEBS=0 in the terminal, the base station just stopped this portable terminal is continued scheduling, and stopping scheduling is exactly to stop to send the E-PUCH resource allocation information through the E-AGCH channel to this terminal.Not before the information reporting base station with TEBS=0, the base station need be dispatched up to portable terminal portable terminal data volume to be sent has been sent at portable terminal.After the information reporting of TEBS=0 is given the base station, think that promptly the probability that portable terminal is scheduled is less, the selection that can start access way is judged.The present invention need select one between by the E-PUCH of base station scheduling and PRACH physical channel resources carries upstream data; Rather than select for use two channels to send upstream data simultaneously; Therefore; When launching E-PUCH and send upstream data, portable terminal need be judged and when just launches PRACH.

Whether the terminal can also basis be in the selection that continuous dispatch state judges whether to start access way.Among the present invention, continuously dispatch state is meant that the terminal does not receive dispatching command through the E-AGCH channel in preset time T, promptly thinks the discontinuous dispatching state that is in.The timer that can in the terminal, start one-period and be T is realized, receives the scheduling controlling order through the E-AGCH channel in the timer run duration, then restarts timer, do not have overtime just think be in continuous dispatch state.The terminal be in continuous dispatch state with regard to the time just continue to wait for the dispatching command of E-AGCH; Otherwise, think that promptly the probability that portable terminal is scheduled is less, the selection that can start access way is judged.In a word, after when the terminal is in the discontinuous dispatching state or terminal had been 0 information reporting base station with buffer memory, the terminal judges base station can not continue this portable terminal is dispatched, the then selection of starting terminal access way.

Also can judge whether to select for use the judgement of PRACH through synchronous or desynchronizing state.Whether the base station sense terminals is up is in synchronous precondition is that the terminal needs to send upstream data to the base station, if the terminal long period is sent upstream data to the base station, the base station will detect the terminal step-out so.The sole cause that the terminal is in the state of step-out is not send upstream data to the base station in the long period; Therefore; The terminal detects when self being in desynchronizing state; Base station side is inevitable have been detected the terminal and has been in desynchronizing state, and at the terminal during step-out, the base station just can not sent out schedule information more any and give the terminal.According to above-mentioned analysis; If the terminal detects the uplink synchronous state that lays oneself open to; And end side was sent TEBS greater than 0 buffer status information to the base station, and subsequent base stations probably can be passed through this user of E-AGCH channel dispatch, at this moment; If this terminal has received the E-AGCH dispatching command again when selecting to send in the E-DCH process through the PRACH channel, can cause the waste of ascending resource like this.And at the terminal during step-out, can think can not continued to have dispatched by the base station of terminal can start the selection judgement of access way.

Portable terminal determines whether to select for use the PRACH physical channel resources to carry upstream data according to data volume to be sent, channel condition, control channel expense, delay requirement etc., below specifies.

Portable terminal can determine whether to launch the PRACH physical channel resources according to data volume to be sent.Particularly, when data volume to be sent during, select to send up E-DCH transport channel data by the E-PUCH of base station scheduling greater than transmission block size thresholding; If when data volume to be sent is less than or equal to transmission block size thresholding, select the PRACH physical channel resources to send up E-DCH transport channel data.

Portable terminal also can determine whether to launch the PRACH physical channel resources according to channel condition.For example; Portable terminal determines whether to launch the PRACH physical channel resources according to measured Serving cell path loss, Serving cell and adjacent sub-district path loss (SNPL, Serving and Neighbour Cell Pathloss), ascending time slot interference value, up benchmark expectation received power value etc.Particularly; The Serving cell path loss that portable terminal is measured is during less than Serving cell path loss thresholding; Selection is sent up E-DCH transport channel data by the E-PUCH of base station scheduling, otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.Perhaps; Serving cell that portable terminal is measured and adjacent sub-district path loss are during greater than Serving cell and neighbor cell path loss thresholding; Selection is sent up E-DCH transport channel data by the E-PUCH of base station scheduling; Otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.Perhaps; Portable terminal compares with the uplink interference of presetting or the thresholding of up benchmark expectation received power according to uplink interference that obtains or up benchmark expectation received power; If uplink interference or up benchmark expectation received power are less than the thresholding that pre-sets; Selection is sent up E-DCH transport channel data by the E-PUCH of base station scheduling, otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.

Wherein, uplink interference and up benchmark expectation received power are perhaps obtained through physical layer signaling through system message broadcasting by portable terminal.Portable terminal can also be selected access way at random according to the blocking factor of above-mentioned channel condition; Such as; Portable terminal adds up with the path loss of actual measurement and through the benchmark expectation received power that system message broadcasting or physical layer signaling obtain and obtains up expectation received power reference; And compare with reference to thresholding with up expectation received power; If less than setting threshold then select to send up E-DCH transport channel data by the E-PUCH of base station scheduling, otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.The terminal can also be carried out computing according to self maximum transmission power ability, path loss and up benchmark expectation received power and obtained power headroom (UPH; UE PowerHeadroom); If power headroom UPH is greater than predefined power headroom thresholding; Then select to send up E-DCH transport channel data by the E-PUCH of base station scheduling, otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.

Portable terminal also can determine whether to launch the PRACH physical channel resources according to the control channel expense.The control channel expense that portable terminal brings when estimating the PRACH physical channel resources respectively and sending upstream data to be sent by the E-PUCH dual mode of base station scheduling.Such as, for the PRACH physical channel resources, the control channel that the data of every transmission Lr bit need is a FPACH channel, wherein, Lr is the up E-DCH data block size that can send through the PRACH physical channel resources in the Transmission Time Interval; For E-PUCH, the control channel that every transmission Le bit needs is a FPACH, an E-RUCCH and an E-AGCH, and wherein Le is the E-DCH data block size through sending in the Transmission Time Interval.Lr and Le can obtain through the mode of high-level signaling or the mode of agreement fixed configurations obtains.The code channel of a spreading factor SF=16 of a FPACH channel occupancy, an E-RUCCH takies a resource conversion and is 2 code channels of spreading factor SF=16, and an E-AGCH need take the code channel of 2 SF=16.Suppose data volume size Ls to be sent, control channel expense Sr=Ls/Lr * 1 when the PRACH physical channel resources is carried so; Sr and Se are directly compared in the expense Se=Ls/Le of E-PUCH * 5, if Sr＞=Se then selects E-PUCH to send up E-DCH transport channel data, otherwise, select the PRACH physical channel resources to send up E-DCH transport channel data.

The judgment mode that above-mentioned PRACH physical channel resources whether is selected for use can be launched respectively, and several next comprehensive judgement wherein also can be set.

When the PRACH physical channel resources was carried upstream data, data were carried by the transmission block TB of ascending reinforced special channel E-DCH.

Fig. 2 is the flow chart of the method for transmitting uplink data of the embodiment of the invention, and is as shown in Figure 2, and method for transmitting uplink data of the present invention may further comprise the steps:

Step 201: be the relevant parameter of base station and the transmission of mobile terminal configuration upstream data.

Radio network controller is set up process, transmission channel reconfiguration course or Physical Shared Channel reconfiguration course through the transmission channel of the Iub interface of itself and base station node B and is accomplished the relevant parameter configuration to the base station.Radio network controller disposes relevant parameter to portable terminal through the system message broadcasting process of air interface.Wherein, relevant parameter comprises network configuration parameters and access way selection parameter.Network configuration parameters comprises: the relevant transmission block size TBS of E-DCH transmission channel with and with the corresponding relation of transport block format indication TFCI or transport block size index TBS index; The professional delay parameter that allows, the maximum retransmission N of permission high-level business and maximum retransmit timer Tr etc.Also comprising the E-HICH channel that need monitor at the terminal, being used to identify what carry on the PRACH physical channel resources is the timing relationship information of information, E-DCH and E-HICH of the specific SYNC-UL code character of E-DCH data.

Need to prove that the configuration information of Physical Random Access Channel PRACH physical channel resources is disposed to the base station by the correlated process of radio network controller through itself and Iub interface, is configured to portable terminal through the system message of eating dishes without rice or wine.

Access way selects parameter to comprise transmission block size thresholding, Serving cell path loss thresholding; Serving cell and neighbor cell path loss thresholding, uplink interference thresholding, up benchmark expectation received power thresholding, up expectation received power are configured to portable terminal through idle message and get final product with reference to thresholding, power margin information thresholding etc.

Step 202: under free time or the cell forward access channel pattern; When the probability that is scheduled at portable terminal is low; Portable terminal starts the selection of access way according to relevant parameter, promptly select the PRACH physical channel resources or by the E-PUCH of base station scheduling as the Data-carrying channel.

Step 202 is PRACH physical channel resources or by the system of selection of the E-PUCH of base station scheduling, and is identical with the system of selection of access way of the present invention, can combine Fig. 1 referring to aforesaid associated description, repeats no more here.

Step 203: when selecting the PRACH physical channel resources to carry data to be sent, data to be sent are inserted among the TB of E-DCH, are sent to network side through the PRACH physical channel resources.

Select for use when carrying upstream data by the E-PUCH of base station scheduling, identical with existing bearing mode and transmission means, repeat no more here.

In the configuration information in the step 201; If not comprising and being used to identify what carry on the PRACH physical channel resources is the information of the specific SYNC-UL code character of E-DCH data; Portable terminal also is to select a SYNC-UL sign indicating number to send to the base station the common SYNC_UL code character from the corresponding SYNC-UL code character of PRACH channel bearing RACH transmission channel; After the base station receives the SYNC_UL sign indicating number; Through the FPACH channel feedback information is sent to the terminal, the physical accidental access procedure is accomplished after correctly receiving FPACH in the terminal.

If including in the relevant configuration information in the step 201 and being used to identify what carry on the PRACH physical channel resources is the information of the specific SYNC-UL code character of E-DCH data; Then portable terminal selects one of them SYNC_UL sign indicating number to send to the base station, and the base station confirms through what send on the PRACH physical channel resources it is the data format of E-DCH according to specific SYNC-UL sign indicating number.

The transformat selection course is carried out according to the predefined TBS parameter that receives in the system message broadcasting in the terminal; Data to be sent are set to the E-DCH data format and carry out chnnel coding after accomplishing the transformat selection, carry corresponding physics control information after the completion chnnel coding and send to the base station through the PRACH physical channel resources.

The PRACH physical channel resources is meant certain code channel of certain time slot on certain carrier wave that carries the PRACH physical channel among the present invention; And the PRACH physical channel is meant the form of a kind of physical media that is used to carry the RACH transport channel data, and which kind of channel coding schemes so-called form adopts, adopts the CRC of length how long etc. such as the PRACH physical channel.When carrying the E-DCH data on the PRACH physical channel resources, this channel may be defined by other titles, such as physics enhanced random access channel (PERACH) etc.Perhaps, when the PRACH physical channel resources was carried the E-DCH data, this channel was known as " E-PUCH channel ".Among the present invention, be intended to explanation and be carried on that " channel " is different from the PRACH physical channel resources " by the E-PUCH channel of base station scheduling ", the former is semi-static configuration, and " by the E-PUCH of base station scheduling " is the base station dynamic dispatching.

In traditional system, can only allow the RACH transmission channel to be mapped on the PRACH physical channel.The data format of RACH transmission channel is different from the data format of E-DCH transmission channel.Data format specifically is meant: the transmission block size that possibly be different from E-DCH such as the transmission block size TBS of RACH; It is different that media inserts the protocol Data Unit form of sublayer MAC; RACH channel bearing generic media access control protocol unit (Common Medium Access Control Protocol Data Unit) MAC-c PDU data structure, and the E-DCH channel bearing strengthens media access control protocol unit (Enhancement MediumAccess Control Protocol Data Unit) MAC-e PDU or improve media access control protocol unit (Improvement Medium Access Control Protocol Data Unit) MAC-i PDU.Transmission block size in each Transmission Time Interval TTI of RACH transmission channel is notified to terminal and base station through the predefined mode of upper-layer protocol.Because it is a kind of that the transmission block size of each RACH channel in each TTI only allows, and therefore, need not to carry the transformat indication information on the PRACH channel, the base station directly gets final product according to predefined transmission block size TBS decoding.

Among the present invention; Possibly carry the RACH transport channel data on the identical PRACH physical channel; Also possibly carry the E-DCH transport channel data, and for the situation of carrying the E-DCH transport channel data, the transmission block of E-DCH size TBS has in each Transmission Time Interval multiple; Such as predefine m kind transmission block size be respectively: TBS1, TBS2...TBSm.For the ease of for the side decoding, can indicate the corresponding different E-DCH transmission block size of expression through the TFCI information of on the PRACH physical channel resources, carrying.Predefined E-DCH transmission block size is greater than under a kind the situation; That is to say that transformat is greater than under a kind the situation; If there is not the mode of TFCI to indicate transformat, in decoding, just carry out blind Detecting for side so according to different E-DCH transmission block sizes.So-called blind Detecting is meant at receiving terminal is not knowing to decode respectively according to predefined several kinds of forms under the definite data format situation, and which kind of form can correctly be decoded is just judged it is which kind of form.The mode of blind decoding can be saved the expense of the information bit that takies of TFCI information field.

Need to prove; Even the E-DCH that carries through the PRACH physical channel resources has only a kind of transmission block size; Also possibly carry two kinds of different transformats of E-DCH owing to possibly carry RACH on the identical PRACH physical channel resources; Under the situation of not using special SYNC-UL sign indicating number to distinguish, network side need be carried out blind decoding according to RACH form and E-DCH form on identical PRACH physical channel resources.

In addition; If being carried on the form of the transmission block size of the E-DCH on the PRACH physical channel resources has only a kind of; That is to say m=1; And when the big or small transmission block size with RACH of the transmission block of E-DCH is identical, can also passes through the mode of specific cycle redundancy detection sign indicating number (CRC, Cyclic Redundancy Check) and represent different transformats.

Need to carry RACH data format and E-DCH data format on the identical PRACH resource; And allow to exist the multiple different data format of E-DCH; To the data decode on the PRACH, introduce method for the ease of the base station receiving terminal below through the indication of PRACH channel bearing transformat.

Use transformat indication TFCI to represent the method for the E-DCH transmission block size on the PRACH physical channel resources.The terminal indicates TFCI to place on the PRACH physical channel resources transformat after accomplishing the E-DCH chnnel coding.In order to increase TFCI transmission of Information reliability, generally speaking, need carry out chnnel coding to the TFCI information of n bit is the m bit, wherein, and m＞=n.The corresponding relation of transmission block size and transformat obtains through the configuration information of step 201, such as the corresponding TFCI=1 of TBS1, and the TFCI=m that TBSm is corresponding, especially, the TBS that carries on the RACH channel uses TFCI=0 to represent.In addition, the indication of the transformat in full text TFCI information possibly also can be expressed as transport block size index TBSindex information.

Operate the mode of representing different data format through special CRC.Perhaps use different multinomials to obtain the similar modes such as mode of CRC sign indicating number such as the mode that the CRC sign indicating number is overturn.Typical C RC code length is 8,12,16 and 24; With CRC length is 8 to be example; The multinomial that generates figure place and be 8 CRC is such as being: g (D)=D8+D7+D4+D3+D+1; The method that generates the CRC sign indicating number is to use the preceding data of coding that multinomial is carried out computing, and resulting remainder is exactly the result of CRC computing, is exactly described CRC sign indicating number.The CRC code table is shown b1, b2 ..., bm; With the position of the CRC that obtains after the handling ordering of overturning of overturning of many CRC sign indicating number, such as position and b1 location swap, with the location swap of b2 and bm-1 with bm; Obtain bm, bm-1 ... b2; The sequence of b1, what use that normal sequence representes the PRACH channel bearing is the RACH channel data, uses sequence after the upset to represent the data of E-DCH.

In the legacy system, through by the re-transmission indication information of the E-DCH of the E-PUCH channel bearing of base station scheduling through the E-UCCH channel bearing.For the re-transmission of the data of supporting to be carried on the E-DCH on the PRACH physical channel resources, introduce the indicating mode of retransmission information below.

The method of carrying the indication of E-DCH data re-transmission through the PRACH physical channel resources is meant the re-transmission pointer that carries the E-DCH data through the PRACH physical channel resources; Wherein, the data re-transmission pointer is to use the mode of time, subframe, radio frames or Transmission Time Interval skew to identify the position indication information of data retransmission.Represent that such as retransmitting pointer PTR=k this data re-transmission is that PTR=0 representes that this packet is first data packets for transmission to the re-transmission of that packet before k the TTI.In order to guarantee the reliability of data re-transmission indication, need retransmit indication to data and encode, such as, be that the PTR pointer of m bit is encoded to p length with length, the data re-transmission after will encode is then indicated and is placed on the PRACH physical channel resources.Here need to prove; If the data re-transmission indication has only a bit length, described data re-transmission indication also possibly be expressed as new data indication (NDI, New Data Indicator); Represent new data such as PTR=0 or NDI=0, PRT=1 or NDI=1 represent data retransmission.

Step 204: network side is decoded to the E-DCH data of carrying on the PRACH physical channel resources.

When not carrying any TFCI information on the PRACH physical channel resources; It is RACH transport channel data or E-DCH transport channel data with what confirm that the terminal sends that blind Detecting is carried out to the data on the channel in the base station, and blind Detecting refers to that the base station decodes according to one or more data formats of predefined RACH channel data form and predefined E-DCH channel respectively.

The E-DCH transmission block size of carrying on the PRACH physical channel resources is when having carried in order to the TFCI of the different transmission blocks sizes of indication E-DCH or TBS index information on a kind of and the PRACH channel, the base station gets final product according to TFCI or the indicated form of TBS index the E-DCH data being carried out corresponding decoding.

When the portable terminal use is represented the data format of E-DCH to the mode of CRC special processing; Decode to data carried by data on the PRACH physical channel according to predefined special CRC sign indicating number in the base station, to confirm that data carried by data is RACH channel format or E-DCH on the PRACH physical channel resources.

When having carried E-DCH data re-transmission indication information on the PRACH physical channel resources; Decode to the data on the PRACH physical channel resources according to the E-DCH form in the base station; Also need confirm that corresponding data are to transmit data or data retransmission for the first time according to the data re-transmission indication information; Corresponding E-DCH data are data retransmissions, and then the base station merges decoding according to the data re-transmission pointer with packet.

Decode when correct, network side is to feeding back to portable terminal through the E-HICH channel.The E-DCH data of carrying on the PRACH physical channel resources if correctly decode in the base station, the information of then correctly decoding through the E-HICH channel feedback according to the timing relationship of E-DCH and E-HICH.After portable terminal receives the correct feedback information of decoding; Perhaps maximum retransmission surpasses predefined maximum retransmission; Perhaps the maximum retransmit timer at terminal is above predefined timer Tr, and perhaps demonstrate above the re-transmission pointer gauge and enclose in the interval between the moment of the moment of predictably terminal imagination generation re-transmission and last time re-transmission, and then the terminal stops data being retransmitted; Otherwise, the re-transmission of the data that carry out at the terminal.

Fig. 3 is the composition structural representation of choice device of the access way of the embodiment of the invention; As shown in Figure 3; The choice device of access way of the present invention comprises dispatch state judging unit 30 and access way selected cell 31; Wherein, dispatch state judging unit 30 is used under free time or cell forward access channel pattern, judges whether the probability that portable terminal is scheduled is lower.Access way selected cell 31 is used for when the probability that is scheduled is low, starting the selection of access way, promptly selects Physical Random Access Channel PRACH physical channel resources or carries data by the enhancing physics up channel E-PUCH of base station scheduling.The function of dispatch state judging unit 30 and access way selected cell 31 can be referring to the associated description of abovementioned steps 102.Wherein, when selecting the PRACH physical channel resources as the Data-carrying channel, said data are carried by the transmission block TB of ascending reinforced special channel E-DCH.

Access way selected cell 31 can be realized through following structure:

Access way selected cell 31 comprises data volume computing module and access way determination module, and wherein, the data volume computing module is used to calculate the current data volume to be sent of carrying; The access way determination module is used for data volume of being calculated and setting threshold are compared, and selects for use the E-PUCH by base station scheduling to carry when exceeding setting threshold, selects for use the PRACH physical channel resources to carry when not exceeding setting threshold.

Access way selected cell 31 comprises measurement module and access way determination module; Wherein, measurement module is used for measuring at least one of Serving cell path loss, Serving cell and adjacent sub-district path loss, ascending time slot interference value, up benchmark expectation received power value; The access way determination module is used for judging according to measurement result whether current channel quality reaches the setting requirement; Reach to set and select for use E-PUCH to carry data to be sent when requiring, do not reach to set and select for use the PRACH physical channel resources to carry data to be sent when requiring by base station scheduling.

Access way selected cell 31 comprises unit physical channel number computing module and access way determination module; Wherein, Unit physical channel number computing module is used for according to data volume to be sent, calculates unit physical channel number shared when being carried by the E-PUCH of base station scheduling and PRACH physical channel resources respectively; The access way determination module is used for the Bearer Channel as data to be sent that the busy channel number is few.

The implementation structure of access way selected cell 31 can be referring to the judgment mode of in the step 102 the PRACH physical channel resources being selected.

It will be appreciated by those skilled in the art that each unit and module in the accompanying drawing 3 can realize described function through corresponding software, also can realize through corresponding circuit.

Fig. 4 is the composition structural representation of the upstream data dispensing device of the embodiment of the invention; As shown in Figure 4; Upstream data dispensing device of the present invention comprises parameter configuration unit 40, access way selected cell 41, transmitting element 42 and resolution unit 43; Wherein, parameter configuration unit 40 is used to the relevant parameter of base station and the transmission of mobile terminal configuration upstream data.Relevant parameter can be referring to the associated description of abovementioned steps 201.When the probability that access way selected cell 41 is used under free time or cell forward access channel pattern, portable terminal is scheduled is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or carry data by the enhancing physics up channel E-PUCH of base station scheduling.Access way selected cell 41 is identical with the structure of the choice device of access way of the present invention, repeats no more here.Transmitting element 42 is used for when selecting the PRACH physical channel resources to carry, data to be sent being inserted among the TB of E-DCH, is about to data to be sent and is set to the E-DCH data format, is sent to network side through the PRACH physical channel resources.Resolution unit 43 is used for the data that the specified upstream synchronous code information according to PRACH, the channel format that retransmits indication information, transmission block size indication information or agreement parse PRACH.Need to prove, also comprise the re-transmission indication information in the E-DCH formatted data that the PRACH physical channel resources is carried, with the notice portable terminal with indicated data re-transmission to network side.

The function of each unit shown in Figure 4 can combine the associated description of accompanying drawing 1, accompanying drawing 2 to understand.It will be appreciated by those skilled in the art that each unit shown in Figure 4 can realize described function through corresponding software, also can realize through corresponding circuit.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.

Claims

1. the system of selection of an access way is characterized in that, this method comprises:

Under idle Idle or the cell forward access channel CELL-FACH pattern; When the probability that is scheduled at portable terminal is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or by the enhancing physics up channel E-PUCH of base station scheduling as the Data-carrying channel.

2. method according to claim 1 is characterized in that, when selecting the PRACH physical channel resources to carry data to be sent, said data are carried by the transmission block TB of ascending reinforced special channel E-DCH.

3. method according to claim 1 and 2 is characterized in that, selects the PRACH physical channel resources or during by the E-PUCH of base station scheduling, with in data volume to be sent, channel quality, the control channel expense at least one as alternative condition.

4. method according to claim 3 is characterized in that,, is specially as alternative condition with data volume to be sent:

5. method according to claim 3 is characterized in that,, is specially as alternative condition with channel quality:

6. method according to claim 3 is characterized in that,, is specially as alternative condition with the control channel expense:

According to data volume to be sent, calculate unit physical channel number shared when carrying respectively by the E-PUCH of base station scheduling and PRACH physical channel resources, with the few Bearer Channel of unit physical channel number that takies as data to be sent,

Said unit physical channel number is meant the number of conversion for the physical channel of identical resource units, and concrete unit stipulates through the mode of agreement agreement.

7. according to each described method in the claim 1 and 2 and 4 to 6, it is characterized in that the probability that said portable terminal is scheduled is lower, is specially:

8. method according to claim 3 is characterized in that, the probability that said portable terminal is scheduled is lower, is specially:

9. method for transmitting uplink data, the relevant parameter for base station and mobile terminal configuration upstream data send is characterized in that this method comprises:

Under free time or cell forward access channel CELL-FACH pattern; When the probability that is scheduled at portable terminal is low; Start the selection of access way, promptly select Physical Random Access Channel PRACH physical channel resources or carry data by the enhancing physics up channel E-PUCH of base station scheduling; And

When selecting the PRACH physical channel resources to carry data to be sent, data to be sent are inserted among the transmission block TB of ascending reinforced special channel E-DCH, are sent to network side through the PRACH physical channel resources.

10. method according to claim 9 is characterized in that, this method also comprises:

11. method according to claim 9; It is characterized in that; Said relevant parameter comprises network configuration parameters and access way selection parameter; Wherein, said network configuration parameters comprises: the transmission block size TBS that the E-DCH that on the PRACH physical channel resources, sends is relevant and be the specified upstream synchronous code information of E-DCH data with the corresponding relation of transport block format indication TFCI or transport block size index, the professional delay parameter that allows, maximum retransmission N, maximum retransmit timer, in order to what sign PRACH physical channel resources was carried; Said access way selects parameter to comprise: data to be transmitted amount threshold value, Serving cell path loss threshold value, Serving cell and neighbor cell path loss threshold value, uplink interference threshold value, up benchmark expectation received power threshold value.

12. method according to claim 11; It is characterized in that; Portable terminal carries data to be sent according to related parameter choosing PRACH physical channel resources or by the E-PUCH of base station scheduling, selects in the parameter at least one as alternative condition with said access way.

13. method according to claim 12 is characterized in that, selects the PRACH physical channel resources or carries data by the E-PUCH of base station scheduling, is specially:

14. method according to claim 12 is characterized in that, selects the PRACH physical channel resources or carries data to be sent by the E-PUCH of base station scheduling, is specially:

15. method according to claim 12 is characterized in that, selects the PRACH physical channel resources or carries data by the E-PUCH of base station scheduling, is specially:

16., it is characterized in that the probability that said portable terminal is scheduled is lower, is specially according to each described method in the claim 9 to 15:

17. the choice device of a physical channel is characterized in that, this device comprises:

18. device according to claim 17 is characterized in that, when said access way selected cell selected the PRACH physical channel resources to carry data, said data were carried by the transmission block TB of ascending reinforced special channel E-DCH.

19. device according to claim 17 is characterized in that, said access way selected cell comprises:

20. device according to claim 17 is characterized in that, said access way selected cell comprises:

21. device according to claim 17 is characterized in that, said access way selected cell comprises:

22., it is characterized in that the probability that said portable terminal is scheduled is lower, is specially according to each described device in the claim 17 to 21:

23. a upstream data dispensing device is characterized in that, this device comprises:

Transmitting element is used for when selecting the PRACH physical channel resources to carry, data to be sent being inserted among the transmission block TB of ascending reinforced special channel E-DCH, is sent to network side through the PRACH physical channel resources.

24. device according to claim 23 is characterized in that, this device also comprises:

25. device according to claim 23; It is characterized in that; Said relevant parameter comprises network configuration parameters and access way selection parameter; Wherein, said network configuration parameters comprises: the transmission block size TBS that the E-DCH that on the PRACH physical channel resources, sends is relevant and be the specified upstream synchronous code information of E-DCH data with the corresponding relation of transport block format indication TFCI or transport block size index, the professional delay parameter that allows, maximum retransmission N, maximum retransmit timer, in order to what sign PRACH physical channel resources was carried; Said access way selects parameter to comprise: data to be transmitted amount threshold value, Serving cell path loss threshold value, Serving cell and neighbor cell path loss threshold value, uplink interference threshold value, up benchmark expectation received power threshold value.

26. device according to claim 25 is characterized in that, said access way selected cell comprises:

27. device according to claim 25 is characterized in that, said access way selected cell comprises:

28. device according to claim 25 is characterized in that, said access way selected cell comprises:

29., it is characterized in that the probability that said portable terminal is scheduled is lower, is specially according to each described device in the claim 23 to 28: