CN101547498B - Uplink access method for CELL_FACH state in TDD system - Google Patents
Uplink access method for CELL_FACH state in TDD system Download PDFInfo
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Abstract
The invention discloses an uplink access method for a CELL_FACH state in a TDD system, which comprises the step of reasonably combining an E-RUCCH access process and a fast E-DCH access process. The technical proposal of the invention comprises the following steps that: firstly, a network allocates a group of SYNC_UL codes for fast E-DCH access, and simultaneously a group of resources are allocated from E-DCH shared resources to serve as the pre-distribution resource of the fast E-DCH uplink access process; and secondly, the pre-distribution resource is divided into a plurality of resource blocks and is broadcast to UE in cells through system messages. The UE randomly selects one from a SYNC_UL code group with a corresponding access mode to initiate the uplink access according to the service demand and the ability condition. The RACH access and the E-RUCCH access are the same as the prior standard. When the UE selects SYNC_UL corresponding to the fast E-DCH access, the network responds the access of the UE through an expanded FPACH. The network notifies the UE of an index number of the accessed resource block through the FPACH under the condition of allowing the UE for fast E-DCH access; and the network notifies the UE of adopting the E-RUCCH access process through the FPACH under the condition of not allowing the UE for fast E-DCH access. The method is applied in the field of mobile communication.
Description
Technical field
The present invention relates to the up enhancing of CELL_FACH state in the 3G wireless communication system, relate in particular to the enhancing of a kind of utilization the up access procedure of CELL_FACH state in the TDD system of the expansion of FPACH.
Background technology
TD-SCDMA (TD SDMA, Time Division-Synchronous CodeDivision Multiple Access) is one of 3G (Third Generation) Moblie standard.
The most valuable in the GSM is exactly limited frequency spectrum resources, and asymmetric business makes the availability of frequency spectrum be improved thereby TD-SCDMA can support up-downgoing speed.TD-SCDMA system synthesis has been utilized code division multiple access (CDMA), time division multiple access (TDMA) and frequency division multiple access (FDMA) technology.This 3G scheme all makes it have many remarkable advantages to smart antenna, advanced technology such as baton handover and joint-detection integrated between direct-cut operation and soft handover in addition.The TD-SCDMA system can identical networking or inter-frequency networking.During inter-frequency networking, the multiple access of a plurality of minizones mainly relies on frequency division multiple access to realize; When adopting identical networking, the multiple access of minizone then relies on spreading code-ovsf code and cell scrambling to accomplish jointly.
In the TD-SCDMA system, introduced the special uplink channel (E-DCH) of an enhancing in order to support the high speed uplink transmission, this channel can be regarded as the DCH that has used HARQ (fast physical layer retransmission) and fast dispatch.E-AGCH (absolute allocated channel) is used to be carried as the authorization message of up E-DCH channel resource allocation.For the TD-SCDMA system; E-AGCH has carried the information of 23 or 26 bits, and these information comprise: absolute (power) apportioning cost, code resource information, time interval resource information, E-AGCH cyclic sequence number, the indication of resource continuous time, E-HICH indication and the indication of E-UCCH quantity.Because E-AGCH is a descending shared channel; In order to distinguish the terminal object of the information transmission on this channel; Need be with ID (UE-ID) mask on the CRC check sign indicating number at terminal, and finally judge that by UE (User Equipment) whether configuration on the E-AGCH is to oneself.UE-ID is by RRC signaled terminal equipment.
Under the CELL_FACH state, the user must at first carry out up access procedure before sending out upstream data.For traditional service call, signaling is set up process and generally comprised following key step in the TD-SCDMA system, and is for calling terminal, as shown in Figure 1:
RRC (wireless connection control, Radio Connection Control) connects the process of setting up;
NAS (Non-Access Stratum) signaling connects to be set up and the NAS signalling interactive process;
RAB (RAB) sets up process;
The transmission of traffic signaling.
The signaling procedure and the caller of called end call setup are similar, but many pagings.
Random access procedure based on RACH message can carry out simply as follows:
1.UE side
(1) retransmission counter of signature (for inserting 8 SYNC-UL sign indicating numbers distributing to uplink pilot time slot UpPTS at random) is set.
(2) the signature transmitting power being set is Signature_Initial_Power.
(3) in available UpPCH subchannel and signature sequence, select a pair of at random according to given access service grade (ASC, Access Service Class).Used random function must satisfy each and select selected probability identical.
(4) with selected UpPCH subchannel, with stochastic signature of signature transmitting power emission.
(5) listen to relevant FPACH behind the emission signature, from subsequently WT (network is to a maximum of sending the number of subframes that signature confirmed) subframe, obtain network validation.UE will read the FPACH relevant with launching UpPCH from the subframe that satisfies following relationship
i: (SFN ' mod L
i)=n
RACHin
RACHi=0 ..., N
RACHi-1, FPACH wherein
iFor channel number is the FPACH of i, L
iBe the length of RACH transmission block, n
RACHiBe the corresponding some PRACH channel numbers of i FPACH, N
RACHiRepresent the PRACH sum that i FPACH is corresponding.
(6) if do not detect effective response within the scheduled time, the signature retransmission counter subtracts 1.If counter, then turned back to for (3) step still greater than 0; Otherwise report once access failure at random to media access control sublayer.
(7) if detect effective response within the scheduled time, then:
1. according to FPACH
iThe indication that network receives is provided with time and power level value.
2. after the subframe of carrying Signature Confirmation, two sub-frame of being separated by are sent RACH message on relevant PRACH.If L
iGreater than 1, and the subframe numbers of confirming is odd number, and UE need wait for a sub-frame again.If following equality is set up, relevant PRACH is exactly and FPACH
iRelated n
RACHiIndividual PRACH:
(SFN ' mod L
i)=n
RACHi, SFN ' is a subframe numbers of confirming arrival here.
Transmitted power level on UpPCH and the PRACH all can not surpass the numerical value of network through the signaling indication.
2. network side
Node B (base station) is the emission FPACH relevant with UpPCH in satisfying the frame of following relationship only
i: (SFN ' mod L
i)=n
RACHin
RACHi=0 ..., N
RACHi-1
Node B can not confirm the UpPCH of the preceding emission of WT sub-frame.
After one effectively signature receives, first directly the reference time T that connects and receive from UpPCH measurements
RefTime deviation, and on relevant FPACH, send the FPACH burst and confirm detected signature.
If insert at random successfully, the terminal is gone up transmission RRC at PRACH (Physical Random Access Channel) and is set up request message, and application is set up RRC and connected.
At the CELL_DCH state, also there is the E-RUCCH process in the TD-SCDMA system for supporting the E-DCH channel, and is as shown in Figure 2.UE sends schedule information (SI) through E-RUCCH to Node B, and Node B carries out resource allocation according to the request of UE and through the E-AGCH channel UE authorized afterwards.Send out signature sequence SYNC_UL because random access procedure and E-RUCCH process all need UE to go up, prior protocols is divided into groups to signature sequence so that Node B can distinguish the different access procedures of UE.The sub-district can with 8 SYNC_UL sign indicating numbers be divided into two groups, one group is used for representing that RACH message inserts, another group expression E-RUCCH inserts, and how to divide into groups to be confirmed and in system message, broadcasted by high level.
There is one type of Always Online (always online) business in the business in various TD-SCDMA system; This type business features is the business of small data packets frequent transmission between terminal and the network; For example PoC (touch-call; Push over Celluar), Push Email (e-mail push) and monthly payment user's demand, their common feature is quite long quiet period is arranged but when having data to pass, to require to wake up fast.To some business especially PoC, the connection setup time that customer requirements is shorter.The terminal generally is maintained at CELL_PCH (cell paging, Paging CHannel) state and connects to avoid frequent RRC.When upstream and downstream user face data arrive; Network has so just had the demand that CELL_FACH status signaling bit rate is strengthened generally with these users CELL_DCH (cell private channel, Dedicated CHannel) state of moving into; To improve the call re-establishment time delay, improve user experience.
The target that CELL_FACH is strengthened is: (1) uses HSPA (high-speed packet access) to improve CELL_FACH status data speed; (2) reduce CELL_FACH, the time delay of user plane and signaling plane under CELL_PCH and the URA_PCH state through higher data rate; (3) the conversion time delay of reduction from non-DCH state to the DCH state; (4) allow to reduce UE power consumption under the CELL_FACH state through discontinuous reception.
In order to realize above-mentioned enhancing target, need the HSPA technology be incorporated into the CELL_FACH state.For up enhancing; A feasible way is directly to bring existing E-RUCCH process as the up access procedure under the CELL_FACH state; The benefit of doing like this is: the operation flow of 1) having inherited CELL_DCH; By Node B uniform dispatching resource, the E-DCH resource can be shared by the UE under CELL_DCH and the CELL_FACH state; 2) SI always reported before transfer of data, can accomplish rational Interference Control, resource allocation.But the shortcoming of doing like this is: time delay is bigger, and under the situation of discontinuously dispatching, initial transmission always has an E-RUCCH flow process and E-AGCH flow process, and the RACH random access procedure that time ratio is general will be grown.Long access delay can influence the data rate of CELL_FACH state and from the conversion time delay of CELL_FACH state to the CELL_DCH state, needing faster, access way reduces access delay.
In order to reduce the E-RUCCH access delay, have some manufacturers to propose to take the quick access process based on the E-DCH channel shown in Figure 3 at present:
1. the terminal is selected one with mode at random in the signature that allows, and on UpPTS, sends out the signature request network insertion.
2. system is after receiving the signature signal that terminal on the UpPTS sends, and the FPACH channel through expansion responds signature and distributes the E-DCH resource.
3., then distributing the E-DCH transmitting data (CCCH, DCCH and DTCH can be mapped to the E-DCH channel in theory) of resource if the terminal receives the affirmation of FPACH.The SI request of UE can be included among the MAC PDU of E-DCH.
In said process, when UE request fast E-DCH inserted, network need be notified the resource allocation conditions of terminal E-DCH, can be through to the resource distribution to the E-DCH channel of the extension realization of FPACH.Such as can on FPACH, transmitting the resource distribution label, the resource distribution that each label is corresponding is broadcasted in BCH.The FPACH information of carrying will comprise like this:
{
(1) signature reference number (the signature number that target mobile phones is launched on UpPTS)
(2) relative subframe number (differential mode 4 of the subframe numbers when subframe numbers when target mobile phones is received FPACH and transmission SYNC_UL)
(3) launch time ((UpPTS of its emission beginning relatively) time migration of target mobile phones emission E-DCH)
(4) uplink transmit power order (power that UE is up should to be adjusted when sending)
(5) E-DCH resource distribution label
}
Know in the up access of E-FACH (enhancement mode CELL_FACH state) state three kinds of selections to be arranged from above-mentioned: traditional RACH inserts, the E-RUCCH process inserts, fast E-DCH inserts.Wherein, back two all are incorporated into the CELL_FACH state to the E-DCH channel.For the E-RUCCH access procedure, the UE of existing support E-DCH channel has the ability to support, only need carry out the E-RUCCH process at the CELL_FACH state getting final product.But the fast E-DCH access need be made an amendment the access procedure of UE, whether supports to depend on the UE ability.
See that from the resource allocation angle after E-RUCCH process and fast E-DCH process inserted, data all were that transmission need utilize sharing E-DCH resource on E-DCH.But for the fast E-DCH access procedure, just need utilize the E-DCH resource in its access procedure, how notify the resource of using in the UE access to become a problem.A kind of feasible resource allocation policy is: in RNC distributes to the shared resource of E-DCH, mark off a part and insert as fast E-DCH.Network carries out piecemeal and numbering to this part resource, and the call number of transmission pre-allocation resource piece is given UE on FPACH.UE carries out transmitting uplink data according to the call number of network notice on the resource of correspondence.
In order to improve resource utilization, preallocated resource also can also can be used in the i.e. transmission of E-DCH after access procedure by general E-DCH channel occupancy.But a kind of situation will occur like this: in some moment, some only support the UE of E-RUCCH access procedure in the E-DCH transmission course, to occupy preallocated resource, and causing fast E-DCH to insert can't carry out.Even if the network side scheduler guarantees when distributing shared resource to give the E-DCH transmission after inserting, to pay the utmost attention to that part of shared resource beyond the pre-allocation resource, still can't avoid above-mentioned situation to take place.Because shared resource is taken by a plurality of UE; At any time have certain UE and discharged the resource beyond the preassignment, used because other shared resources have been occupied probably and to give that part of resource that inserts reservation fast and carry out UE side that E-RUCCH inserts before this.Final result is: at some constantly, also there is the E-DCH resource in system, but is caused the UE that supports fast E-DCH to insert normally to insert owing to pre-allocation resource has occupied.How to improve resource utilization more effectively and reduce the access delay of CELL_FACH state, and how with existing Web-compatible, be the problem that the present invention will solve.
Summary of the invention
The objective of the invention is to address the above problem; The up-link access method of CELL_FACH state in a kind of TDD system is provided; Existing E-RUCCH access procedure and fast E-DCH access procedure are reasonably combined; Make the UE that supports fast E-DCH to insert notify follow-up access process by network after on signature, sending out, have outstanding advantage at aspects such as feasibility, compatibility and flexibilities.
Another object of the present invention is to provide the end side up-link access method of CELL_FACH state in a kind of TDD system; Existing E-RUCCH access procedure and fast E-DCH access procedure are reasonably combined; Make the UE that supports fast E-DCH to insert notify follow-up access process by network after on signature, sending out, have outstanding advantage at aspects such as feasibility, compatibility and flexibilities.
Another object of the present invention is to provide the network side up-link access method of CELL_FACH state in a kind of TDD system; Existing E-RUCCH access procedure and fast E-DCH access procedure are reasonably combined; Make the UE that supports fast E-DCH to insert notify follow-up access process by network after on signature, sending out, have outstanding advantage at aspects such as feasibility, compatibility and flexibilities.
Technical scheme of the present invention is: the present invention has disclosed the end side up-link access method of CELL_FACH state in a kind of TDD system, comprising:
(1) terminal judges access style then get into step (2) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(2) one of picked at random from the SYNC_UL code character that fast E-DCH inserts;
(3) send signature sequence;
(4) in the regulation subframe, whether obtain FPACH and confirm,, otherwise return step (2) if obtain confirming then get into step (5);
(5) FPACH according to expansion judges whether network is agreed to take the fast E-DCH access and distributed resource, if then get into step (6), otherwise the access process of entering E-RUCCH;
(6) send data through the indicated E-DCH resource of the FPACH of expansion.
The end side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, other access style comprises that RACH message inserts and E-RUCCH inserts in the step (1).
The end side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the technical standard of this regulation in the step (1) is 3GPP international standard and China's communications industry standard.
The end side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the access process of the entering E-RUCCH in the step (5) further comprises:
(5.1) on the E-RUCCH channel, send schedule information;
(5.2) resource authorization is carried out through the E-AGCH channel in the wait base station;
(5.3) data are sent at the terminal on authorized E-DCH resources.
The end side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
The end side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
The present invention has also disclosed the network side up-link access method of CELL_FACH state in a kind of TDD system, comprising:
(1) receives signature sequence;
(2) judge that signature sequence is initiated subframe and whether current sub-frame interval surpasses system's setting,, otherwise get into step (3) if then return step (1);
(3) judge the signature sequence type, then get into step (4) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(4) judge whether to permit adopting fast E-DCH to insert,, otherwise get into step (6) if then get into step (5);
(5) FPACH with expansion gives terminal distribution E-DCH resource;
(6) carry out the E-RUCCH access procedure with the FPACH notice terminal of expansion, get into the handling process that E-RUCCH is inserted then.
The network side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, other access style comprises that RACH message inserts and E-RUCCH inserts in the step (3).
The network side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the technical standard of this regulation is 3GPP international standard and China's communications industry standard in the step (3).
The network side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the entering in the step (6) further comprises the handling process that E-RUCCH inserts:
(6.1) schedule information on the reception E-RUCCH;
(6.2) through the E-AGCH channel resource authorization is carried out at the terminal.
The network side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
The network side up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
The present invention has disclosed the up-link access method of CELL_FACH state in a kind of TDD system in addition, comprising:
End side:
(1) terminal judges access style then get into step (2) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(2) one of picked at random from the SYNC_UL code character that fast E-DCH inserts;
(3) send signature sequence;
(4) in the regulation subframe, whether obtain FPACH and confirm,, otherwise return step (2) if obtain confirming then get into step (5);
(5) FPACH according to expansion judges whether network is agreed to take the fast E-DCH access and distributed resource, if then get into step (6), otherwise the access process of entering E-RUCCH;
(6) send data through the indicated E-DCH resource of the FPACH of expansion;
Network side:
(7) receive signature sequence;
(8) judge that signature sequence is initiated subframe and whether current sub-frame interval surpasses system's setting,, otherwise get into step (9) if then return step (7);
(9) judge the signature sequence type, then get into step (10) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(10) judge whether to permit adopting fast E-DCH to insert,, otherwise get into step (12) if then get into step (11);
(11) FPACH with expansion gives terminal distribution E-DCH resource;
(12) carry out the E-RUCCH access procedure with the FPACH notice terminal of expansion, get into the handling process that E-RUCCH is inserted then.
The up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, other access style comprises that RACH message inserts and E-RUCCH inserts.
The up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the technical standard of regulation is 3GPP international standard and China's communications industry standard.
The up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein,
The access process of E-RUCCH in the step (5) at terminal further comprises:
(5.1) on the E-RUCCH channel, send schedule information;
(5.2) resource authorization is carried out through the E-AGCH channel in the wait base station;
(5.3) data are sent at the terminal on authorized E-DCH resources;
Entering in the step (12) of network side further comprises the handling process that E-RUCCH inserts
(6.1) schedule information on the reception E-RUCCH;
(6.2) through the E-AGCH channel resource authorization is carried out at the terminal.
The up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of expansion is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
The up-link access method of CELL_FACH state in the above-mentioned TDD system, wherein, the FPACH of expansion is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
The present invention contrasts prior art has following beneficial effect: thought of the present invention is at first; Network is divided one group of SYNC_UL sign indicating number and is used for the fast E-DCH access; Network marks off the pre-allocation resource of one group of resource as the up access procedure of fast E-DCH in the E-DCH shared resource simultaneously; And be these resource division some Resource Block further, be broadcast to the UE in the sub-district through system message.UE initiates up access according to self business demand and ability situation one of picked at random in the SYNC_UL of corresponding access way code character.RACH access procedure and E-RUCCH access procedure all with existing standard in stipulate identical.Insert corresponding SYNC_UL when UE has selected fast E-DCH, network responds the access of UE through the FPACH of expansion.Carry out situation lower network that fast E-DCH inserts call number permitting UE, carry out the situation lower network that fast E-DCH inserts and adopt the E-RUCCH access procedure disapproving UE through FPACH notice UE through FPACH notice UE access-in resource piece.The contrast prior art; The present invention not only can reduce access delay effectively; And make network side initiate UE that fast E-DCH inserts signature using the E-RUCCH process instead and accomplish follow-up access the situation of being seized or the like with the antagonism reserved resource according to resource situation and network demand notice.
Description of drawings
Fig. 1 is the flow chart that traditional calling is set up.
Fig. 2 is the flow chart of traditional E-RUCCH process.
Fig. 3 is the flow chart that traditional fast E-DCH inserts.
Fig. 4 is the flow chart of a preferred embodiment of the UE side of the up access procedure of E-FACH state of the present invention.
Fig. 5 is the flow chart of a preferred embodiment of the network side of the up access procedure of E-FACH state of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
Fig. 4 shows the flow process of the end side up-link access method of CELL_FACH state in the TDD of the present invention system.Seeing also Fig. 4, is the detailed description to each step of end side up-link access method flow process of the present invention below.
What kind of access style step S400:UE takes according to self-ability and business demand judgement.If take RACH message to insert then get into step S401; If take E-RUCCH to insert then get into step S405; If take fast E-DCH to insert then get into step S411.
Step S401: picked at random is one from the SYNL_UL code character that the RACH access allows.
Step S402: send signature sequence.
Step S403: wait for that FPACH confirms, confirm then get into step S404 if in some subframes of system's regulation, receive FPACH, otherwise return step S401.
Step S404: send upstream data at the RACH channel, flow process finishes.
Step S405: picked at random is one from the SYNC_UL code character that the E-RUCCH access allows.
Step S406: send signature sequence.
Step S407: wait for that FPACH confirms, confirm then get into step S408 if in some subframes of system's regulation, receive FPACH, otherwise return step S405.
Step S408: send schedule information (SI) at the E-RUCCH channel.
Step S409: wait base station (Node B) is carried out resource through the E-AGCH channel and is authorized.
Step S410:UE sends data on authorized E-DCH resources, flow process finishes.
Step S411: picked at random is one from the SYNC_UL code character that fast E-DCH inserts.
Step S412: send signature sequence.
Step S413: wait for that FPACH confirms, confirm then get into step S414 if in some subframes of system's regulation, receive FPACH, otherwise return step S411.
Step S414: carry out access way according to the message among the FPACH of expansion and judge,, otherwise get into step S408 if network is agreed to take fast E-DCH to insert then got into step S415.
Step S415: on the E-DCH resource of the FPACH of expansion indication, send upstream data, flow process finishes.
In step S414 and S415, mentioned FPACH has been expanded.Keep in the position except there being 2bits to be used for still surplus 7bits UpPCH shifting at present, can utilize the some positions among this 7bits to transmit the information that the fast E-DCH access procedure is correlated with at the 9bits that FPACH keeps.Provide the possible dual mode of FPACH of expansion in the present embodiment.
Mode 1: the Resource Block that is pre-assigned to the fast E-DCH access in the supposing the system has m altogether.In the reservation position of FPACH, telling n bit indicates pre-allocation resource piece index and access procedure to select that (n is not more than 7 natural number and 2
n-1>=m, concrete value should be determined by network based actual conditions).0,1 value one of this n bit has 2
nPlant possible combination, notify UE to take the E-RUCCH access procedure, select the call number that m combination expression fast E-DCH inserts in the remaining combination with a kind of combination wherein.This mode can support 2 at most
nThe network configuration of-1 pre-allocation resource piece.
For example: when n=2,01,10,11 represent the the 1st, the 2nd, the 3rd preallocated Resource Block respectively; 00 expression current UE is not permitted adopting the fast E-DCH mode to insert, and needs to adopt E-RUCCH to insert.
Mode 2: the Resource Block that is pre-assigned to the fast E-DCH access in the supposing the system has m altogether.In the reservation position of FPACH, tell the call number that n bit indicated the pre-allocation resource piece, tell 1 bit x in addition again
As(n is not more than 7 natural number and 2 to indicate access procedure
n>=m, concrete value should be determined by network based actual conditions).This mode can support 2 at most
nThe network configuration of individual pre-allocation resource piece.Access procedure indication x
AsTwo values 0,1 be used for respectively representing that granted UE takes fast E-DCH to insert and E-RUCCH inserts.
For RACH message access procedure and E-RUCCH access procedure, all be prior art in the foregoing description, meet 3GPP international standard and China's communications industry standard.
Fig. 5 shows the flow process of the network side up-link access method of CELL_FACH state in the TDD of the present invention system.Seeing also Fig. 5, is the detailed description to each step of network side up-link access method flow process of the present invention below.
At first, network is in initial condition.
Step S500: the signature sequence that receives UE.
Step S501: the compute signature sequence is initiated the interval of subframe and current subframe, if the interval surpasses system's setting then turns back to initial condition, otherwise gets into step S502.
Step S502: judge the access style that UE initiates according to the group under the SYNC_UL sequence that receives.If UE initiates is that RACH inserts then gets into step S503, if UE initiates is that E-RUCCH inserts then gets into step S504, is that fast E-DCH inserts then gets into step S507 if UE initiates.
Step S503: according to the regulation in the existing standard (3GPP international standard and China's communications industry standard), send the FPACH response that inserts signature to RACH message, flow process finishes.
Step S504:, send the FPACH response that inserts signature to E-RUCCH according to the regulation in the existing standard.
Step S505: receive the schedule information (SI) on the E-RUCCH.
Step S506: the schedule information according to UE is carried out resource allocation, and through the E-DCH resource of E-AGCH channel authorization UE, flow process finishes.
Step S507: judge that the UE whether current network condition allows to initiate to insert signature adopts the fast E-DCH mode to insert.If allow then get into step S509, otherwise get into step S508.
Step S508: the FPACH notice UE with expansion carries out the E-RUCCH access procedure, gets into step S505 then.
Step S509: the FPACH with expansion distributes the E-DCH resource to UE, and flow process finishes.
The foregoing description has been mentioned in step S508 and S509 FPACH has been expanded.Keep in the position except there being 2bits to be used for still surplus 7bits UpPCH shifting at present, can utilize this 7bits to transmit the information that the fast E-DCH access procedure is correlated with at the 9bits that FPACH keeps.Provide the possible dual mode of FPACH of expansion in the present embodiment.
Mode 1: the Resource Block that is pre-assigned to the fast E-DCH access in the supposing the system has m altogether.In the reservation position of FPACH, telling n bit indicates pre-allocation resource piece index and access procedure to select that (n is not more than 7 natural number and 2
n-1>=m, concrete value should be determined by network based actual conditions).0,1 value one of this n bit has 2
nPlant possible combination, notify UE to take the E-RUCCH access procedure, select the call number that m combination expression fast E-DCH inserts in the remaining combination with a kind of combination wherein.This mode can support 2 at most
nThe network configuration of-1 pre-allocation resource piece.
For example: when n=2,01,10,11 represent the the 1st, the 2nd, the 3rd preallocated Resource Block respectively; 00 expression current UE is not permitted adopting the fast E-DCH mode to insert, and needs to adopt E-RUCCH to insert.
Mode 2: the Resource Block that is pre-assigned to the fast E-DCH access in the supposing the system has m altogether.In the reservation position of FPACH, tell the call number that n bit indicated the pre-allocation resource piece, tell 1 bit x in addition again
As(n is not more than 7 natural number and 2 to indicate access procedure
n>=m, concrete value should be determined by network based actual conditions).This mode can support 2 at most
nThe network configuration of individual pre-allocation resource piece.Access procedure indication x
AsTwo values 0,1 be used for respectively representing that granted UE takes fast E-DCH to insert and E-RUCCH inserts.
The present invention has also disclosed the up-link access method of CELL_FACH state in the TDD system.This up-link access method comprises the up access procedure of end side and network side.Please show the up access process of end side and network side respectively simultaneously referring to Fig. 4 and Fig. 5.And explained respectively in above-mentioned two embodiment about the specific descriptions of access process, repeat no more at this.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; Those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (18)
1. the end side up-link access method of CELL_FACH state in the TDD system; Network is divided one group of SYNC_UL sign indicating number and is used for the fast E-DCH access; Network marks off the pre-allocation resource of one group of resource as the up access procedure of fast E-DCH in the E-DCH shared resource simultaneously; And be these resource division some Resource Block further; Be broadcast to the terminal in the sub-district through system message, up access is initiated according to self business demand and ability situation one of picked at random in the SYNC_UL of corresponding access way code character in the terminal, has selected fast E-DCH when the terminal and has inserted corresponding SYNC_UL; The access that network comes response terminal through the FPACH that expands; Carry out situation lower network that fast E-DCH the inserts call number through FPACH notice terminal access-in resource piece permitting the terminal, carry out the situation lower network that fast E-DCH inserts and adopt the E-RUCCH access procedure through FPACH notice terminal disapproving the terminal, method comprises:
(1) access style is judged according to self-ability and business demand in the terminal, then get into step (2) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(2) one of picked at random from the SYNC_UL code character that fast E-DCH inserts;
(3) send signature sequence;
(4) in the regulation subframe, whether obtain FPACH and confirm,, otherwise return step (2) if obtain confirming then get into step (5);
(5) FPACH according to expansion judges whether network is agreed to take the fast E-DCH access and distributed resource; If then get into step (6); Otherwise send schedule information at the E-RUCCH channel; Wait for that the base station carries out resource through the E-AGCH channel and authorize, data are sent at the terminal on authorized E-DCH resources, and flow process finishes;
(6) send data through the indicated E-DCH resource of the FPACH of expansion.
2. the end side up-link access method of CELL_FACH state is characterized in that in the TDD according to claim 1 system, and other access style comprises that RACH message inserts the access with E-RUCCH in the step (1).
3. the end side up-link access method of CELL_FACH state is characterized in that the technical standard of this regulation in the step (1) is 3GPP international standard and China's communications industry standard in the TDD according to claim 1 system.
4. the end side up-link access method of CELL_FACH state in the TDD according to claim 1 system is characterized in that the access process of the entering E-RUCCH in the step (5) further comprises:
(5.1) on the E-RUCCH channel, send schedule information;
(5.2) resource authorization is carried out through the E-AGCH channel in the wait base station;
(5.3) data are sent at the terminal on authorized E-DCH resources.
5. the end side up-link access method of CELL_FACH state in the TDD according to claim 1 system is characterized in that the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
6. the end side up-link access method of CELL_FACH state in the TDD according to claim 1 system is characterized in that the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
7. the network side up-link access method of CELL_FACH state in the TDD system; Network is divided one group of SYNC_UL sign indicating number and is used for the fast E-DCH access; Network marks off the pre-allocation resource of one group of resource as the up access procedure of fast E-DCH in the E-DCH shared resource simultaneously; And be these resource division some Resource Block further; Be broadcast to the terminal in the sub-district through system message, up access is initiated according to self business demand and ability situation one of picked at random in the SYNC_UL of corresponding access way code character in the terminal, has selected fast E-DCH when the terminal and has inserted corresponding SYNC_UL; The access that network comes response terminal through the FPACH that expands; Carry out situation lower network that fast E-DCH the inserts call number through FPACH notice terminal access-in resource piece permitting the terminal, carry out the situation lower network that fast E-DCH inserts and adopt the E-RUCCH access procedure through FPACH notice terminal disapproving the terminal, method comprises:
(1) receives signature sequence;
(2) judge that signature sequence is initiated subframe and whether current sub-frame interval surpasses system's setting,, otherwise get into step (3) if then return step (1);
(3) judge the signature sequence type, then get into step (4) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(4) judge whether to permit adopting fast E-DCH to insert according to current network condition,, otherwise get into step (6) if then get into step (5);
(5) FPACH with expansion gives terminal distribution E-DCH resource;
(6) carry out the E-RUCCH access procedure with the FPACH notice terminal of expansion, receive the schedule information on the E-RUCCH then, carry out resource allocation according to the schedule information at terminal, through the E-DCH resource at E-AGCH channel authorization terminal, flow process finishes.
8. the network side up-link access method of CELL_FACH state is characterized in that in the TDD according to claim 7 system, and other access style comprises that RACH message inserts the access with E-RUCCH in the step (3).
9. the network side up-link access method of CELL_FACH state is characterized in that the technical standard of this regulation is 3GPP international standard and China's communications industry standard in the step (3) in the TDD according to claim 7 system.
10. the network side up-link access method of CELL_FACH state is characterized in that in the TDD according to claim 7 system, and the entering in the step (6) further comprises the handling process that E-RUCCH inserts:
(6.1) schedule information on the reception E-RUCCH;
(6.2) through the E-AGCH channel resource authorization is carried out at the terminal.
11. the network side up-link access method of CELL_FACH state in the TDD according to claim 7 system is characterized in that the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
12. the network side up-link access method of CELL_FACH state in the TDD according to claim 7 system is characterized in that the FPACH of the expansion described in step (5) and (6) is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
13. the up-link access method of CELL_FACH state in the TDD system; Network is divided one group of SYNC_UL sign indicating number and is used for the fast E-DCH access; Network marks off the pre-allocation resource of one group of resource as the up access procedure of fast E-DCH in the E-DCH shared resource simultaneously; And be these resource division some Resource Block further; Be broadcast to the terminal in the sub-district through system message, up access is initiated according to self business demand and ability situation one of picked at random in the SYNC_UL of corresponding access way code character in the terminal, has selected fast E-DCH when the terminal and has inserted corresponding SYNC_UL; The access that network comes response terminal through the FPACH that expands; Carry out situation lower network that fast E-DCH the inserts call number through FPACH notice terminal access-in resource piece permitting the terminal, carry out the situation lower network that fast E-DCH inserts and adopt the E-RUCCH access procedure through FPACH notice terminal disapproving the terminal, method comprises:
End side:
(1) access style is judged according to self-ability and business demand in the terminal, then get into step (2) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(2) one of picked at random from the SYNC_UL code character that fast E-DCH inserts;
(3) send signature sequence;
(4) in the regulation subframe, whether obtain FPACH and confirm,, otherwise return step (2) if obtain confirming then get into step (5);
(5) FPACH according to expansion judges whether network is agreed to take the fast E-DCH access and distributed resource; If then get into step (6); Otherwise send schedule information at the E-RUCCH channel; Wait for that the base station carries out resource through the E-AGCH channel and authorize, data are sent at the terminal on authorized E-DCH resources, and flow process finishes;
(6) send data through the indicated E-DCH resource of the FPACH of expansion;
Network side:
(7) receive signature sequence;
(8) judge that signature sequence is initiated subframe and whether current sub-frame interval surpasses system's setting,, otherwise get into step (9) if then return step (7);
(9) judge the signature sequence type, then get into step (10) if fast E-DCH inserts, otherwise technical standard is according to the rules handled to other access style;
(10) judge whether to permit adopting fast E-DCH to insert according to current network condition,, otherwise get into step (12) if then get into step (11);
(11) FPACH with expansion gives terminal distribution E-DCH resource;
(12) carry out the E-RUCCH access procedure with the FPACH notice terminal of expansion, receive the schedule information on the E-RUCCH then, carry out resource allocation according to the schedule information at terminal, through the E-DCH resource at E-AGCH channel authorization terminal, flow process finishes.
14. the up-link access method of CELL_FACH state is characterized in that in the TDD according to claim 13 system, other access style comprises that RACH message inserts the access with E-RUCCH.
15. the up-link access method of CELL_FACH state is characterized in that the technical standard of regulation is 3GPP international standard and China's communications industry standard in the TDD according to claim 13 system.
16. the up-link access method of CELL_FACH state is characterized in that in the TDD according to claim 13 system,
The access process of E-RUCCH in the step (5) of end side further comprises:
(5.1) on the E-RUCCH channel, send schedule information;
(5.2) resource authorization is carried out through the E-AGCH channel in the wait base station;
(5.3) data are sent at the terminal on authorized E-DCH resources;
Entering in the step (12) of network side further comprises the handling process that E-RUCCH inserts:
(12.1) schedule information on the reception E-RUCCH;
(12.2) through the E-AGCH channel resource authorization is carried out at the terminal.
17. the up-link access method of CELL_FACH state in the TDD according to claim 13 system is characterized in that the FPACH of expansion is meant:
In the reservation position of FPACH, select several idle bits, come indicating terminal to take the E-RUCCH access procedure, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of remaining combination selection property again with wherein a kind of combination of these several bits.
18. the up-link access method of CELL_FACH state in the TDD according to claim 13 system is characterized in that the FPACH of expansion is meant:
In the reservation position of FPACH, select the bit of a free time; E-RUCCH inserts to come indicating terminal to take fast E-DCH to insert still with this bit, the call number of the pre-allocation resource piece that inserts with the expression fast E-DCH of the combination selection property of remaining several idle bit positions again.
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| US20120113960A1 (en) * | 2009-11-11 | 2012-05-10 | Qualcomm Incorporated | Method and Apparatus to Support HSUPA During Baton Handover in TD-SCDMA Systems |
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