CN101594274A - The initial method that inserts and the transmission method of initial access signaling - Google Patents
The initial method that inserts and the transmission method of initial access signaling Download PDFInfo
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Abstract
The method of initial access signaling transmission and the initial method that inserts under a kind of sub-district _ forward access channel CELL_FACH state, comprise: UE sends one to Node B and strengthens the request that inserts at random, and wherein carrying one, to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of data to be transferred; Node B then utilizes data amount information and maximum retransmission to authorize enough resources of transmission data to be transferred for UE as judging that according to indication information data to be transferred is an initial access signaling; UE transmits on authorization resources and retransmits data to be transferred, if completed successfully the transmission of data to be transferred when resource authorization expires, then UE initially inserts success.After adopting the present invention, can solve the situation that can't support the initial access signaling segment transmissions in the existing system to the authorization of initial access signaling by the agreement Node B, simply available.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to the method for initial access under a kind of CELL_FACH (sub-district _ forward access channel) state and the transmission method of initial access signaling.
Background technology
The standardization effort that 3GPP (3G (Third Generation) Moblie partnership) is carrying out the up enhancing of CELL_FACH state at present.The up enhancing of CELL_FACH state makes it obtain less packet transfer delay and higher transmission rate by introducing the ascending packet data transmission performance that E-DCH (enhancing-dedicated transmission channel) transmission channel strengthens this state at the CELL_FACH state.
The E-DCH transmission is exactly usually said HSUPA (high speed uplink packet access).The physical-layer techniques of HSUPA uses advanced obtains high-transmission efficient.In the version before 3GPP Rel-7, E-DCH transmission is use under CELL_DCH (sub-district specially _ use channel) state only, signaling or data on DCCH (Dedicated Control Channel) or DTCH (Dedicated Traffic Channel) logic channel are mapped to earlier on the E-DCH transmission channel, are mapped on E-PUCH (enhancing-physical uplink channel) physical channel from the E-DCH transmission channel again.The E-DCH business is divided into dispatching services and non-scheduling service by the difference of scheduling mode, and wherein the resource of non-scheduling service is that UE (subscriber equipment) distributes by SRNC (service wireless network controller), and resource has periodically and specificity, is suitable for real time business; In dispatching services, be that NodeB (Node B, i.e. base station) distributes sub-district enhanced uplink resource pool by SRNC, be single UE Resources allocation by Node B again.
An E-DCH dispatching services transmission course under the CELL_DCH state may further comprise the steps as shown in Figure 1:
101:SRNC thinks to be that UE sets up the E-PUCH Radio Link by Radio Link foundation request or the radio link reconfiguration request requirement Node B that sends NBAP (node B application part) agreement then for this UE sets up enhanced uplink through admittance control;
102: after Node B receives configuration parameter, be this UE distribution E-AGCH (enhancing-absolute grant channel) channel and E-RNTI (enhancing-Radio Link temporary mark) from the up common pool of the enhancing of this sub-district, and it returned to SRNC by Radio Link foundation response or the radio link reconfiguration response of NBAP;
103:SRNC initiates radio bearer by RRC (Radio Resource control) agreement to UE and sets up request, wherein comprise the E-DCH configuration parameter, as E-AGCH channel configuration, E-RNTI, the configuration that is mapped to the logic channel on the E-DCH, E-TFC (enhancing-TFS Transport Format Set) configuration etc.;
104:UE receives configuration parameter, replys radio bearer foundation to network side and finishes message.Determine that according to configuration parameter current E-DCH transport service is available; UE is mapped to that data volume becomes at non-0 o'clock by 0 in the logic channel buffering area on the E-DCH, and UE initiates to strengthen and inserts request at random, promptly initiates access at random by E-RUCCH (strengthens-inserting ascending control channel at random) channel and asks, and comprises step 105-107;
105:UE selects to be exclusively used in the uplink synchronous code (SYNC_UL) that E-DCH inserts at random, sends to Node B by UpPCH (ascending pilot channel) channel;
After 106:Node B detects the uplink synchronous code of UE, send affirmation by FPACH (physical access channel) channel;
107:UE selects an E-RUCCH channel to send enhancing on the subframe of determining and inserts request at random, wherein carries schedule information and the E-RNTI of oneself;
108: after the enhancing that Node B detects this UE inserts request at random, UE is added among the competition UE group who uses the E-DCH resource.Node B is dispatched this UE according to current resource situation, the QOS of UE (service quality) attribute, UE auxiliary dispatching information etc., after distributing adequate resources for it, sends authorization message by the E-AGCH channel to UE, carries the E-RNTI of UE on the E-AGCH;
After 109:UE detects the E-AGCH that points to oneself, arrive timing n
E-AGCHAfter, on the E-PUCH that authorizes, send data.The last control channel E-UCCH (enhancing-ascending control channel) who follows in addition of E-PUCH, UE carries E-TFCI (indication of enhancing-transformat), HARQ (mixing automatic repeat requests) process number and re-transmission sequence number therein;
110: Node B is decoded to the control channel of following in the E-PUCH channel, obtains transport format information, and data portion is decoded then, and returns ACK/NACK information on the E-HICH channel.
Under the CELL_FACH state, do not have private processes between Node B and the SRNC, thereby 101 and 102 flow processs do not exist among Fig. 1, the transfer process of E-DCH and transmission course consistent (105 to 110) under the CELL_DCH state.Up logic channel comprises CCCH (Common Control Channel), DCCH and DTCH under the CELL_FACH state.UE sends the CCCH channel during initial the access, and the RRC of transmission (Radio Resource control) initial access signaling comprises:
RRC connection request (RRC Connection Request): be in the link setup message that the UE under free time (Idle) state initiates;
Cell update (Cell Update): be in the initial access message of initiating when UE under the connection status arrives new sub-district after through the sub-district gravity treatment;
URA upgrades (UTRAN Registration Area Update, the Universal Terrestrial Radio Access Network Acceditation Area upgrades): be in the initial access message that UE URA_PCH (URA_ physical channel) state under initiates during the new registration area of arrival after through the sub-district gravity treatment.
During initial the access, UE is without any specific configuration information, and promptly 103 among Fig. 1 and 104 also do not exist.After initial access signaling such as having only to send to network side, UE just may receive configuration signal.Just because of this, also have some problems to need to solve when on E-DCH, carrying out the initial access signaling transmission: as because UE this moment does not have special-purpose E-RNTI, how to send authorization resources information, promptly how to use problems such as E-AGCH channel addressing UE to UE.
A kind of available method is as follows: for UE distributes public E-RNTI, be used for the initial access signaling transmission, and public E-RNTI and E-RUCCH channel are set up incidence relation.Because the E-RUCCH channel can only be used by a UE at same TTI (Transmission Time Interval), thereby same public E-RNTI also only may use by a UE at one time, therefore avoided the UE more than 1 to use same public E-RNTI simultaneously and the conflict of the public E-RNTI that causes.
After public E-RNTI conflict solves, also need to solve the how problem of addressing UE of E-AGCH channel.1 or many E-AGCH channels of distribution are used for the E-DCH transmission under the CELL_FACH state in the sub-district, this one or more E-AGCH channel is selected in the E-AGCH resource pool of sub-district by Node B, these channels can transmit shared resource with the E-DCH under the CELL_DCH state, and are broadcasted in system message by high level.
Node B receives behind the E-RUCCH when using the UE authorization resources of public E-RNTI, the E-AGCH channel uses this public E-RNTI addressing UE, and the last E-RUCCH place time slot that E-AGCH channel place time slot and this UE use has definite sequential relationship, and this sequential relationship is by high level configuration, agreement agreement or pass through the indication of E-AGCH channel.
By following two aspects, Node B can be addressed to a concrete UE:
1) comprises the E-RNTI of UE in the crc field of E-AGCH channel;
With to carry out E-DCH transmission under the CELL_DCH state the same, insert at random when asking when UE sends on the E-RUCCH channel, except carrying schedule information, UE also can with on oneself E-RNTI.Node B can comprise the E-RNTI information of UE in the CRC of E-AGCH channel (cyclic redundancy check (CRC)) field.The initial access signaling transmit stage, the E-RNTI that UE sends is the E-RNTI with selected E-RUCCH channels associated.
2) the last E-RUCCH interchannel of E-AGCH channel and UE use has definite sequential relationship, and UE discerns the E-AGCH channel by this sequential relationship and whether is sent to oneself.Because public E-RNTI can be shared by the UE timesharing in the sub-district, thereby after setting up the sequential relationship of E-AGCH channel and E-RUCCH channel, Node B just can be addressed to a concrete UE.
When more than having solved UE and being in the initial access signaling transmit stage, send insert request at random after, Node B is the problem of addressing UE how.According to above method, after Node B received an E-RUCCH, if the E-RNTI that wherein carries is public E-RNTI, what Node B just can judge that UE need carry out so was the initial access signaling transmission.
The up enhancing of CELL_FACH is based on RLC PDU (wireless link control protocol data cell) length flexibly, and supports the segmentation of MAC (medium access control) layer, and UE finishes the transmission of E-DCH packet with new entity MAC-i/is.Thereby when initial access signaling is mapped to E-DCH and goes up transmission, need to consider a kind of situation, be exactly that signaling may be divided into the transmission of a plurality of MAC-i bag.In this case, if the not enough UE of the resource that Node B once authorizes finishes the transmission of all MAC-i bags, so follow-up mandate just can't send down, and UE can only initiate new access at random again with the application resource, and this will bring bigger time delay.
Summary of the invention
The technical problem to be solved in the present invention provides the method for initial access under a kind of CELL FACH state and the transmission method of initial access signaling, and the information that makes Node B can utilize UE to report distributes enough resources to finish initial access for it.
For addressing the above problem, the invention provides the transmission method of initial access signaling under a kind of sub-district _ forward access channel CELL_FACH state, may further comprise the steps:
A, subscriber equipment send one to Node B and strengthen the request that inserts at random, and wherein carrying one, to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of described data to be transferred;
B, described Node B as according to as described in indication information judge as described in data to be transferred be initial access signaling, then utilizing described data amount information and maximum retransmission is the resource that described data to be transferred is enough transmitted in described subscriber equipment mandate;
C, described subscriber equipment transmit on described authorization resources and retransmit described data to be transferred.
Further, above-mentioned transmission method also can have following feature:
Among the step a, described subscriber equipment carries its public enhancing-Radio Link temporary mark E-RNTI to indicate described data to be transferred is initial access signaling by inserting at random in described enhancing in the request, or carries a particular value to indicate described data to be transferred be initial access signaling by insert highest priority logical channel signaling amount parameter to be passed in the schedule information in the request or highest priority logical channel parameter at random in described enhancing.
Further, above-mentioned transmission method also can have following feature:
Among the step a, described subscriber equipment inserts the data amount information that buffer state parameter in the schedule information in the request is carried described data to be transferred at random by described enhancing.
Further, above-mentioned transmission method also can have following feature:
Among the step b, when described Node B is described subscriber equipment authorization resources, utilize other parameter except that buffer state, Radio Resource control algolithm and the available resources of Node B in the schedule information of described user equipment to report, determine the authorization power of each Transmission Time Interval TTI and channel resource size and required TTI number and at interval.
For addressing the above problem, the present invention also provides the initial method that inserts under a kind of sub-district _ forward access channel CELL_FACH state, may further comprise the steps:
A, user equipment (UE) send one to Node B and strengthen the request that inserts at random, and wherein carrying one, to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of described data to be transferred;
B, described Node B as according to as described in indication information judge as described in data to be transferred be initial access signaling, then utilizing described data amount information and maximum retransmission is that described UE authorizes the resource of enough transmitting described data to be transferred;
C, described UE transmit on described authorization resources and retransmit described data to be transferred, if completed successfully the transmission of described data to be transferred when described resource authorization expires, then described UE initially inserts success.
Further, above-mentioned initial access method also can have following feature:
Among the step c, if when described resource authorization expires, do not finish the transmission of described data to be transferred, the initial access failure of then described UE.
Further, above-mentioned initial access method also can have following feature:
Among the step c, if still there is remaining authorization resources not to be used after the transmission of finishing described data to be transferred, then described UE sends a transfer of data to described Node B and finishes indication information on the Transmission Time Interval of next one mandate; After described Node B is received, regain described remaining authorization resources.
Further, above-mentioned initial access method also can have following feature:
Among the step c, if described UE is when last packet of transmission, the data volume of this packet is not enough to fill up the Transmission Time Interval of a mandate and remaining space to be enough to transmit a transfer of data and to finish indication information, and then described UE finishes indication information with described last packet and described transfer of data and together sends to described Node B; After described Node B is received, as described in judging in the automatic repeat requests entity of the mixing of UE all data retransmissions all be successfully received, then regain described remaining authorization resources.
Further, above-mentioned initial access method also can have following feature:
It is that a buffer state parameter value is 0 schedule information that described transfer of data is finished indication information.
Further, above-mentioned initial access method also can have following feature:
Among the step a, described subscriber equipment carries its public enhancing-Radio Link temporary mark E-RNTI to indicate described data to be transferred is initial access signaling by inserting at random in described enhancing in the request, or carries a particular value to indicate described data to be transferred be initial access signaling by insert highest priority logical channel signaling amount parameter to be passed in the schedule information in the request or highest priority logical channel parameter at random in described enhancing.
Further, above-mentioned initial access method also can have following feature:
Among the step a, described subscriber equipment inserts the data amount information that buffer state parameter in the schedule information in the request is carried described data to be transferred at random by described enhancing.
Further, above-mentioned initial access method also can have following feature:
Among the step b, when described Node B is described subscriber equipment authorization resources, utilize other parameter except that buffer state, Radio Resource control algolithm and the available resources of Node B in the schedule information of described user equipment to report, determine the authorization power of each Transmission Time Interval TTI and channel resource size and required TTI number and at interval.
After adopting the present invention, can solve the situation that can't support the initial access signaling segment transmissions in the existing system to the authorization of initial access signaling by agreement Node B, simply available.
Description of drawings
Fig. 1 is the E-DCH dispatching services transmission course schematic diagram under the CELL_DCH state in the prior art;
Fig. 2 is the flow chart of UE initial access method in the embodiment of the invention;
Fig. 3 is the initial process that inserts of the UE that is in idle condition in the application example of the present invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
The transmission method of initial access signaling under a kind of CELL_FACH state may further comprise the steps:
A, subscriber equipment send to Node B and strengthen the request that inserts at random, carry wherein that to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of this data to be transferred;
B, Node B are as judging that according to above-mentioned indication information above-mentioned data to be transferred is an initial access signaling, and then utilizing above-mentioned data amount information and maximum retransmission is the resource that above-mentioned data to be transferred is enough transmitted in above-mentioned subscriber equipment mandate; Wherein, maximum retransmission is by the HARQ number of retransmissions of network high level at the signaling transmission feature configuration of CCCH channel;
C, above-mentioned subscriber equipment transmit above-mentioned data to be transferred on above-mentioned authorization resources.
Wherein, among the step a, above-mentioned subscriber equipment can to indicate above-mentioned data to be transferred be initial access signaling by insert the public E-RNTI that carries its selection in the request at random in above-mentioned enhancing; Also can be by carrying particular value that a UE and Node B appointed to indicate above-mentioned data to be transferred be initial access signaling strengthening the highest priority logical channel signaling amount parameter to be passed that inserts at random in the schedule information of carrying in the request or highest priority logical channel parameter.Can also insert the data amount information that buffer state parameter in the schedule information in the request is carried above-mentioned initial access signaling at random by above-mentioned enhancing.
The initial down method that inserts of a kind of CELL_FACH state as shown in Figure 2, may further comprise the steps:
201, user equipment (UE) send to strengthen the request that inserts at random to Node B, carries wherein that to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of above-mentioned data to be transferred;
202, Node B is as judging that according to above-mentioned indication information above-mentioned data to be transferred is an initial access signaling, and then utilizing above-mentioned data amount information and maximum retransmission is that above-mentioned UE authorizes enough resources of the above-mentioned data to be transferred of transmission; Wherein, maximum retransmission is the HARQ number of retransmissions that is configured at the signaling transmission feature of CCCH channel by the network high level;
203, UE transmits described data to be transferred on above-mentioned authorization resources, if finished the transmission of above-mentioned data to be transferred when above-mentioned resource authorization expires, then UE initially inserts success; Otherwise, the initial access failure of UE.
If in step 203, UE still has remaining authorization resources not to be used after the transmission of finishing above-mentioned data to be transferred, and then it sends a transfer of data to Node B and finishes indication information on the Transmission Time Interval of next one mandate; After Node B is received, regain remaining authorization resources.
Can also be in step 203, if UE is when last packet of transmission, the data volume of this packet is not enough to fill up the Transmission Time Interval of a mandate and remaining space to be enough to transmit a transfer of data and to finish indication information, and then UE finishes indication information with last packet and transfer of data and together sends to Node B; After Node B is received, regain remaining authorization resources.
In above-mentioned two kinds of situations, it can be that 0 schedule information or other can be represented the indication information that transfer of data is finished for a buffer state parameter value that transfer of data is finished indication information.
Wherein, in the step 201, subscriber equipment can be by carrying its public E-RNTI to indicate data to be transferred be initial access signaling strengthening to insert at random in the request; Also can carrying particular value that a UE and Node B appointed by highest priority logical channel signaling amount parameter to be passed in strengthening the schedule information that inserts at random in the request or highest priority logical channel parameter, to indicate above-mentioned data to be transferred be initial access signaling.Can also carry the data amount information of data to be transferred by strengthening buffer state parameter in the schedule information that inserts at random in the request.
Further specify the present invention below by example of the present invention.
When carrying out the transmission of initial access signaling on E-DCH, UE is in a kind of in following three kinds of states:
State one: UE is in idle condition, initiates RRC and connects;
State two: UE is in CELL_DCH, CELL_FACH or CELL_PCH (sub-district _ physical channel), the sub-district gravity treatment has taken place arrived a new sub-district, initiates cell update;
State three: UE is in the URA_PCH state, and the sub-district gravity treatment has taken place, and new sub-district is positioned at a new URA district, and UE initiates URA and upgrades.
When UE need transmit initial access signaling, it strengthened access at random, sent enhancing by the E-RUCCH channel and inserted request at random, and it is as shown in table 1 that E-RUCCH upward strengthens parameter entrained in the access request at random in the existing system:
Table 1E-RUCCH goes up information transmitted
| This sub-district, adjacent sub-district path loss (5 bit) | Power headroom (5 bit) | Buffer state (5 bit) | Highest priority logical channel signaling amount to be passed (4 bit) | Highest priority logical channel number (4 bit) | UE identifies (16 bit) |
Wherein, preceding 5 fields are exactly schedule information." buffer state " wherein filled in the data volume of the initial access signaling on the CCCH channel; Because UE this moment has only the CCCH channel to need transmission, thereby " highest priority logical channel signaling amount to be passed ", " highest priority logical channel number " can be filled in not according to existing method, can carry other content, as representing that data to be transferred is an initial access signaling by carrying a particular value " 0000 "; " this sub-district, adjacent sub-district path loss ", " power headroom " filled in by existing mode.Last field " UE sign " is filled in the public E-RNTI that UE selects.
Use because public E-RNTI only carries out initial access signaling when transmission at UE, thereby when Node B receives E-RUCCH after, if " UE sign " field carries is public E-RNTI, NodeB just thinks that UE need carry out initial access signaling and transmit so.Certainly, also can exist alternate manner to indicate initialization signaling transmission, indicating data to be transferred such as " the highest priority logical channel signaling amount to be passed " mentioned in above utilizing, " highest priority logical channel number " is initial access signaling.
Because in the initial access signaling transmit stage, UE does not have special-purpose E-RNTI, can't repeatedly authorize.Therefore in the present invention, Node B can finish the required whole resources of initial access signaling transmission to the UE primary distribution of carrying out the initial access signaling transmission.
The number of retransmissions of buffer state that UE reports and high-rise configuration has been determined the resource sum that UE is required, also needs to consider the signaling consumption of MAC layer certainly.When the actual allocated resource, Node B need comprehensively carry out concrete resource allocation according to the factors such as situation of the schedule information of UE, the RRM of Node B (Radio Resource control) algorithm, available resources, comprises the number of the authorization power of determining each TTI and channel resource size and required TTI.
Each information field to the influence of resource allocation is in the schedule information:
1, UE " this sub-district, the adjacent sub-district path loss " and " power headroom " that the report size that influences the power mandate of UE;
2, " buffer state ", the size that " this sub-district, adjacent sub-district path loss " and " power headroom " influences a TTI channel resource that report of UE;
After having determined the power mandate and channel resource mandate of a TTI, Node B utilizes " buffer state " and " number of retransmissions " also to need what TTI to finish transmission with regard to the data of having determined UE, and method is as follows:
1. determine the length of the maximum MAC-i packet that can transmit in a TTI (hereinafter to be referred as the MAC bag) according to power mandate and channel resource mandate, this process is consistent with E-TFC (enhancing-transformat combination) selection course in the existing system;
2. then, need just can determine what MAC packets just can finish the initial access signaling transmission, thereby determine to finish the required resource size (unit: the TTI number) of signaling transmission one time according to " buffer state " that UE reports;
3. last, can determine final resource size (unit: the TTI number) according to the maximum retransmission of CCCH channel data bag.
Concrete resource authorization process depends on the inside realization of Node B, and this is an iteration trade-off process between the multiple factors such as a data volume request at UE, area interference control, cell available resources.Such as, TTI number excessive (above 8) can influence uplink synchronous control and the power control of UE, and this moment, Node B should consider to strengthen the authorization resources of single TTI, thereby dwindled the length of TTI.Such as a RRC connection request message-length is 25 bytes (200 bits), suppose that the power mandate of Node B and channel resource mandate allow UE to transmit the data of 162 bits at a TTI, UE needs 2 MAC bags just this signaling may be transmitted to finish (signaling consumption that wherein also needs to consider the MAC layer) so; If the maximum retransmission of the CCCH channel of high-rise configuration is 1, finish a RRC connection request message in order to transmit so, UE will send 4 MAC bags at most, and Node B need distribute the resource of 4 TTI to give UE.
In the prior art, the E-AGCH channel can pass through the resource of RDI (Resource Duration Indicator, resource continuous indication) a plurality of TTI of field privilege, maximum 8, as shown in table 2, Node B can utilize this mechanism to finish the mandate of initial access signaling transmission.According to last example, Node B can have three kinds of selections, is respectively RDI=4,5,6.
Table 2 resource allocation dial gauge
| RDI (3 bit) | The TTI number of distributing | TTI at interval |
| 0 | 1 | 1 |
| 1 | 2 | 1 |
| 2 | 2 | 2 |
| 3 | 2 | 4 |
| 4 | 4 | 1 |
| 5 | 4 | 2 |
| 6 | 4 | 4 |
| 7 | 8 | 1 |
According to the method in the background information, after UE sends E-RUCCH, on the sequential of determining, receive the mandate of pointing to own selected public E-RNTI, on authorization resources, transmit the back at interval in the agreement predetermined timing then.After UE finishes the transmission of first MAC bag, on the TTI of ensuing all authorization resources, can retransmit, also can transmit new MAC bag according to the feedback that head passes packet.
If finished the transmission of initial access signaling before resource authorization is overtime, the initial of UE inserted successfully, has 2 kinds of situations this moment:
1, the authorization resources of UE just in time uses up;
2, UE also has the authorization resources of unnecessary TTI.
To first kind of situation, Node B passes to RNC with the successful MAC packet that receives by Iub mouth user face, sends to upper layer entity after being sorted by RNC, and this moment, UE waited for the response message of network side to initial access.
The reason of second kind of situation appearance has 2 kinds:
1, the re-transmission of packet does not reach maximum retransmission;
The scope of the corresponding data volume of " buffering area " state that 2, UE reports in the existing protocol is not accurate buffer area data volume size, thereby the data volume size of authorization resources and reality has error.
In order effectively to utilize system resource, UE can be by in the end carrying the indication that a number reportedly is totally lost in a MAC packet, such as carrying a schedule information, wherein indication " buffer state " is 0, make Node B can know that UE has finished transfer of data, the residual resource withdrawal is used for other user.When the expiration of the authorization resources of UE, after the data of perhaps receiving UE were finished indication, the MAC bag of this UE that Node B can receive success be transmitted to RNC.
If do not finish the transmission of initial access signaling when described resource authorization is overtime, the initial access failure of UE, UE will be initiated the new request of access at random again.After access was finished at random, UE resend initial access signaling new.
A concrete initial access signaling transmission course as shown in Figure 3, wherein UE initiates the RRC connection request from idle condition.
When 301:UE need initiate the RRC connection, select a carrier wave, and select to be exclusively used in the synchronous code that E-RUCCH inserts on this carrier wave, on available UpPCH subchannel, send this synchronous code; UE selects a FPACH channel according to the rule of existing protocol agreement;
After 302:Node B detects synchronous code, select a FPACH channel, and on corresponding subframe, send affirmation by same rule;
After 303:UE receives the confirmation, the E-RUCCH channel that selection is associated with FPACH, and selecting the public E-RNTI be associated with this E-RUCCH, UE fills the information in the E-RUCCH channel, comprises that the metrical information of basis oneself is filled in this sub-district, adjacent sub-district path loss, power headroom; Size according to the RLC PDU of RRC connection request correspondence is filled in " buffer state "; In the UE identification field, fill in selected public E-RNTI;
After 304:Node B receives the E-RUCCH channel, after Te-agch subframe send authorization message by the E-AGCH channel, the enough UE of this authorization resources send initial access signaling, in this example, suppose that initial access signaling needs the resource of 4 TTI at most.Consider that there are certain time delay (general E-HICH confirms the next subframe in the E-PUCH transmission) in E-HICH affirmation and E-PUCH between sending, thereby need certain interval between the TTI to the UE mandate, so just can make UE before next authorization resources TTI arrives, obtain the affirmation information of a packet, can finish the re-transmission of packet to the packet that does not have successfully to send as early as possible.Thereby suggestion RDI is set to 5, i.e. the TTI at each authorization resources place subframe at interval.
Detect the E-AGCH channel on Te-agch the subframe of 305:UE after sending E-RUCCH, after containing the E-RNTI that points to oneself, send data on the resource of authorizing, be to send the Initial R RC signaling that is mapped on the CCCH logic channel herein.
306:Node B confirms on the timing slip of determining.
UE is in the transmission and the repeating transmission of the enterprising line data bag of follow-up authorization resources.In the end in new data packets, if 23 bit space of residue are arranged, UE will be used to fill one and strengthen the request that inserts at random, and wherein indicating buffer state is 0, after Node B receives, judge and to regain resource after all data retransmissions in should the HARQ entity of UE are all successfully received.If UE has successfully transmitted all packets, and also do not finish (not having unnecessary space transmitting scheduling information) to Node B indication transmission, if also have remaining TTI resource this moment, UE can authorize at the next one and send a schedule information on the TTI, and the indication buffer state is 0.
307:Node B gives RNC with the MAC data forwarding that receives after confirming that UE finishes the initial access signaling transmission.Node B confirms that UE finishes the method for transfer of data: resource has used up or has received the schedule information of UE, and wherein indicating buffer state is 0.
Discussion of the present invention be initial access signaling, initial access signaling all uses the CCCH Channel Transmission.On the CCCH channel, only transmit following signaling:
RRC connection request (RRC Connection Request);
Cell update (Cell Update);
URA upgrades (UTRAN Registration Area Update, the Universal Terrestrial Radio Access Network Acceditation Area upgrades).
But the transmission of CCCH is not equal to the transmission of initial access signaling.Because cell update and URA upgrade the situation that UE periodically updates that also can be used in the sub-district, this moment, UE had the E-RNTI of oneself.When actual formulating standard, in order to simplify and facilitate, may require the transmission of CCCH all to use the method for the invention.Like this, thought of the present invention can expand to the transmission of all CCCH channels.The present invention also has a specific embodiment, is exactly the situation that CCCH goes up transmission, may further comprise the steps:
When 401:UE need initiate the CCCH transmission, select a carrier wave, and select to be exclusively used in the synchronous code that E-RUCCH inserts on this carrier wave, on available UpPCH subchannel, send this synchronous code; UE selects a FPACH channel according to the rule of existing protocol agreement;
After 402:Node B detects synchronous code, select a FPACH channel, and on corresponding subframe, send affirmation by same rule;
After 403:UE receives the confirmation, the E-RUCCH channel that selection is associated with FPACH, and selecting the public E-RNTI be associated with this E-RUCCH, UE fills the information in the E-RUCCH channel, comprises that the metrical information of basis oneself is filled in this sub-district, adjacent sub-district path loss, power headroom; Size according to the RLC PDU of CCCH channel signaling correspondence to be passed is filled in " buffer state "; In the UE identification field, fill in selected public E-RNTI, be i.e. all use public E-RNTI during CCCH transmission; The method of another kind of indication CCCH transmission is that " highest priority logical channel number " uses a specific logical channel number that is exclusively used in CCCH, such as " 0000 ", the E-RNTI field of this moment can be filled in according to UE actual allocated situation, when UE is assigned E-RNTI, fill in the E-RNTI of UE self; Otherwise fill in public E-RNTI;
After 404:Node B receives the E-RUCCH channel, if public E-RNTI user, then after Te-agch subframe send authorization message by the E-AGCH channel; If special-purpose E-RNIT user, Node B can not limit and send the time point of authorizing so.The enough UE of this authorization resources send this CCCH signaling, in this example, suppose that the CCCH signaling needs the resource of 4 TTI at most.Consider that there are certain time delay (general E-HICH confirms the next subframe in the E-PUCH transmission) in E-HICH affirmation and E-PUCH between sending, thereby need certain interval between the TTI to the UE mandate, so just can make UE before next authorization resources TTI arrives, obtain the affirmation information of a packet, can finish the re-transmission of packet to the packet that does not have successfully to send as early as possible.Thereby suggestion RDI is set to 5, i.e. the TTI at each authorization resources place subframe at interval.
405: to detecting the E-AGCH channel on Te-agch the subframe of UE after sending E-RUCCH of using public E-RNTI user; Need detect the E-AGCH channel constantly to the user who uses special E-RNTI.Behind the E-AGCH that contains the E-RNTI that points to oneself, on the resource of authorizing, send data, be to send the RRC signaling that is mapped on the CCCH logic channel herein.
406:Node B confirms on the timing slip of determining.
UE is in the transmission and the repeating transmission of the enterprising line data bag of follow-up authorization resources.In the end in new data packets, if 23 bit space of residue are arranged, UE will be used to fill schedule information, and wherein indicating buffer state is 0, after Node B receives, judge and will regain resource after all data retransmissions in should the HARQ entity of UE are all finished.If UE has successfully transmitted all packets, and also do not finish (not having unnecessary space transmitting scheduling information) to NodeB indication transmission this moment, if also have remaining TTI resource this moment, UE can authorize at the next one and send schedule information on the TTI, and the indication buffer state is 0.
407:Node B gives RNC with the MAC data forwarding that receives after confirming that UE finishes the transmission of CCCH signaling.Node B confirms that UE finishes the method for transfer of data: resource has used up or has received the schedule information of UE, and wherein indicating buffer state is 0.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (12)
1, the transmission method of initial access signaling under a kind of cell forward access channel CELL_FACH state is characterized in that, may further comprise the steps:
A, subscriber equipment send one to Node B and strengthen the request that inserts at random, and wherein carrying one, to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of described data to be transferred;
B, described Node B as according to as described in indication information judge as described in data to be transferred be initial access signaling, then utilizing described data amount information and maximum retransmission is the resource that described data to be transferred is enough transmitted in described subscriber equipment mandate;
C, described subscriber equipment transmit on described authorization resources and retransmit described data to be transferred.
2, transmission method as claimed in claim 1 is characterized in that,
Among the step a, described subscriber equipment carries its public enhancing-Radio Link temporary mark E-RNTI to indicate described data to be transferred is initial access signaling by inserting at random in described enhancing in the request, or carries a particular value to indicate described data to be transferred be initial access signaling by insert highest priority logical channel signaling amount parameter to be passed in the schedule information in the request or highest priority logical channel parameter at random in described enhancing.
3, transmission method as claimed in claim 1 is characterized in that,
Among the step a, described subscriber equipment inserts the data amount information that buffer state parameter in the schedule information in the request is carried described data to be transferred at random by described enhancing.
4, as claim 1 or 3 described transmission methods, it is characterized in that,
Among the step b, when described Node B is described subscriber equipment authorization resources, utilize other parameter except that buffer state, Radio Resource control algolithm and the available resources of Node B in the schedule information of described user equipment to report, determine the authorization power of each Transmission Time Interval TTI and channel resource size and required TTI number and at interval.
5, the initial down method that inserts of a kind of sub-district _ forward access channel CELL_FACH state is characterized in that, may further comprise the steps:
A, user equipment (UE) send one to Node B and strengthen the request that inserts at random, and wherein carrying one, to be used to indicate data to be transferred be the indication information of initial access signaling and the data amount information of described data to be transferred;
B, described Node B as according to as described in indication information judge as described in data to be transferred be initial access signaling, then utilizing described data amount information and maximum retransmission is that described UE authorizes the resource of enough transmitting described data to be transferred;
C, described UE transmit on described authorization resources and retransmit described data to be transferred, if completed successfully the transmission of described data to be transferred when described resource authorization expires, then described UE initially inserts success.
6, method as claimed in claim 5 is characterized in that,
Among the step c, if when described resource authorization expires, do not finish the transmission of described data to be transferred, the initial access failure of then described UE.
7, method as claimed in claim 5 is characterized in that,
Among the step c, if still there is remaining authorization resources not to be used after the transmission of finishing described data to be transferred, then described UE sends a transfer of data to described Node B and finishes indication information on the Transmission Time Interval of next one mandate; After described Node B is received, regain described remaining authorization resources.
8, method as claimed in claim 5 is characterized in that,
Among the step c, if described UE is when last packet of transmission, the data volume of this packet is not enough to fill up the Transmission Time Interval of a mandate and remaining space to be enough to transmit a transfer of data and to finish indication information, and then described UE finishes indication information with described last packet and described transfer of data and together sends to described Node B; After described Node B is received, as described in judging in the automatic repeat requests entity of the mixing of UE all data retransmissions all be successfully received, then regain described remaining authorization resources.
9, as claim 7 or 8 described methods, it is characterized in that,
It is that a buffer state parameter value is 0 schedule information that described transfer of data is finished indication information.
10, method as claimed in claim 5 is characterized in that,
Among the step a, described subscriber equipment carries its public enhancing-Radio Link temporary mark E-RNTI to indicate described data to be transferred is initial access signaling by inserting at random in described enhancing in the request, or carries a particular value to indicate described data to be transferred be initial access signaling by insert highest priority logical channel signaling amount parameter to be passed in the schedule information in the request or highest priority logical channel parameter at random in described enhancing.
11, method as claimed in claim 5 is characterized in that,
Among the step a, described subscriber equipment inserts the data amount information that buffer state parameter in the schedule information in the request is carried described data to be transferred at random by described enhancing.
12, as claim 5 or 11 described methods, it is characterized in that,
Among the step b, when described Node B is described subscriber equipment authorization resources, utilize other parameter except that buffer state, Radio Resource control algolithm and the available resources of Node B in the schedule information of described user equipment to report, determine the authorization power of each Transmission Time Interval TTI and channel resource size and required TTI number and at interval.
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| CN101835269A (en) * | 2010-03-26 | 2010-09-15 | 中兴通讯股份有限公司 | Transmission method and system of shared channel uplink RRC (Radio Resource Control) signaling |
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